Cisco ASR 901 Series Aggregation Services Router Command Reference
CLI Command Reference
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Table Of Contents

CLI Command Reference

asr901-ecmp-hash-config global-type

asr901-ecmp-hash-config ipv4-type

asr901-ecmp-hash-config ipv6-type

asr901-ecmp-hash-config mpls-to-ip

asr901-multicast source

asr901-platf-frr enable

asr901-platf-multicast enable

asr901-platf-multi-nni-cfm

bfd all-interfaces

bfd interval

channel-group (interface)

channel-protocol (interface)

class (policy-map)

class cem

clear platform ptp stats

clock-port

clock-destination

clock source (interface)

controller

cpu traffic ppp set ip dscp cs

cpu traffic ppp set mpls experimental topmost

debug platform tcam error

debug platform tcam info

dejitter-buffer

dmm responder hardware timestamp

duplex

encapsulation dot1q (service instance)

encapsulation dot1ad

esmc mode

ethernet loopback

ethernet oam remote-failure action

idle-pattern

interface vlan

interface atm ima

interface port-channel

interface range

ip tos

l3-over-l2 flush buffers

l2proto-forward

load-interval

mac-flap-ctrl

match ip dscp

match vlan

mtu

name

negotiation

network-clock clear switch

network-clock eec

network-clock external hold-off

network-clock hold-off global

network-clock hold-off

network-clock input-source

network-clock input-source controller

network-clock output-source system

network-clock quality-level

network-clock revertive

network-clock wait-to-restore

network-clock wait-to-restore global

network-clock set lockout

network-clock switch force

network-clock switch manual

network-clock synchronization automatic

network-clock synchronization ssm option

payload-size

police (percent)

police (two rates)

policy-map

protocol (ATM)

pseudowire-class

ptp profile telecom

ql-enabled rep segment

rep block port

rep platform vlb segment

rep segment

router isis

service instance

service-policy (policy-map class)

set cos

set dscp

set ip dscp

set ip precedence (policy-map)

set ip precedence (route-map)

set ip precedence tunnel

set ip tos (route-map)

set network-clocks

set precedence

shape (percent)

shape (policy-map class)

show asr901 multicast-support

show atm cell-packing

show cem circuit

show cem platform

show etherchannel

show ethernet loopback

show interface port-channel

show interfaces rep

show ip vrf

show mac-address-table

show network-clock synchronization

show platform hardware

show platform ptp state

show platform ptp stats

show platform ptp stats detailed

show platform tcam detailed

show platform tcam summary

show policy-map

show policy-map interface

show ptp port running detail

show rep topology

show table-map

show xconnect

snmp mib rep trap-rate

speed

synce state master

synce state slave

synchronous mode

table-map

termination

transport ipv4

tune-buffer port

xconnect logging redundancy


CLI Command Reference


Revised: November 21, 2013, OL-26031-06

This chapter contains an alphabetical listing of commands for the Cisco ASR 901 Series Aggregation Services Router.


Note For a general reference for Cisco IOS, see the documentation for Cisco IOS Software Releases 15.1S. The Cisco ASR 901 does not necessarily support all of the commands listed in the 15.1S documentation.


asr901-ecmp-hash-config global-type

asr901-ecmp-hash-config ipv4-type

asr901-ecmp-hash-config ipv6-type

asr901-ecmp-hash-config mpls-to-ip

asr901-multicast source

asr901-platf-frr enable

asr901-platf-multicast enable

asr901-platf-multi-nni-cfm

bfd all-interfaces

bfd interval

channel-group (interface)

channel-protocol (interface)

class (policy-map)

class cem

clear platform ptp stats

clock-port

clock-destination

clock source (interface)

controller

cpu traffic ppp set ip dscp cs

cpu traffic ppp set mpls experimental topmost

debug platform tcam error

debug platform tcam info

dejitter-buffer

dmm responder hardware timestamp

duplex

encapsulation dot1q (service instance)

encapsulation dot1ad

esmc mode

ethernet loopback

idle-pattern

interface vlan

interface atm ima

interface port-channel

interface range

ip tos

l3-over-l2 flush buffers

load-interval

mac-flap-ctrl

match ip dscp

match vlan

mtu

name

negotiation

network-clock clear switch

network-clock eec

network-clock external hold-off

network-clock hold-off global

network-clock hold-off

network-clock input-source

network-clock input-source controller

network-clock output-source system

network-clock quality-level

network-clock revertive

network-clock wait-to-restore

network-clock wait-to-restore global

network-clock set lockout

network-clock switch force

network-clock switch manual

network-clock synchronization automatic

network-clock synchronization ssm option

payload-size

police (percent)

police (two rates)

policy-map

protocol (ATM)

pseudowire-class

ptp profile telecom

ptp profile telecom

ql-enabled rep segment

rep block port

rep platform vlb segment

rep segment

router isis

service instance

service-policy (policy-map class)

set cos

set dscp

set ip dscp

set ip precedence (policy-map)

set ip precedence (route-map)

set ip precedence tunnel

set ip tos (route-map)

set network-clocks

set precedence

shape (percent)

shape (policy-map class)

show asr901 multicast-support

show atm cell-packing

show cem circuit

show cem platform

show etherchannel

show ethernet loopback

show interface port-channel

show interfaces rep

show ip vrf

show mac-address-table

show network-clock synchronization

show platform hardware

show platform ptp state

show platform ptp stats

show platform ptp stats detailed

show platform tcam detailed

show platform tcam summary

show policy-map

show policy-map interface

show ptp port running detail

show rep topology

show table-map

show xconnect

snmp mib rep trap-rate

speed

synce state master

synce state slave

synchronous mode

table-map

termination

transport ipv4

tune-buffer port

xconnect logging redundancy

asr901-ecmp-hash-config global-type

To specify the equal-cost multi-path routing (ECMP) hashing algorithm at the global level, use the asr901-ecmp-hash-config global-type command in global configuration mode. To remove this configuration, use the no form of this command.

asr901-ecmp-hash-config global-type {hash-crc16-mode | hash-seed seed-value | hash-xor1-mode | hash-xor2-mode | hash-xor4-mode | hash-xor8-mode | tunnel-mode} add

no asr901-ecmp-hash-config global-type {hash-crc16-mode | hash-seed seed-value | hash-xor1-mode | hash-xor2-mode | hash-xor4-mode | hash-xor8-mode | tunnel-mode} add

Syntax Description

hash-crc16-mode

Enables hash CRC-16 modes.

hash-seed

Enables hash seed value for hash computation.

seed-value

Hash seed value.

hash-xor1-mode

Enables hash XOR1 mode.

hash-xor2-mode

Enables hash XOR2 mode.

hash-xor4-mode

Enables hash XOR4 mode.

hash-xor8-mode

Enables hash XOR8 mode.

tunnel-mode

Enables tunnel mode to look into the inner header for tunneled packets.

add

Adds hash mode.


Command Default

The hash-crc16-mode algorithm is enabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to configure the ECMP hash configurations for improved load distribution of IP traffic. The hash-crc16-mode algorithm is enabled by default for ECMP.

Examples

The following example shows how to configure the ECMP hash configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# asr901-ecmp-hash-config global-type hash-xor1-mode
Router(config)# asr901-ecmp-hash-config global-type hash-xor1-mode add

Related Commands

Command
Description

asr901-ecmp-hash-config ipv4-type

Enables the ipv4-type of ECMP hash configurations.

asr901-ecmp-hash-config ipv6-type

Enables the ipv6-type of ECMP hash configurations.

asr901-ecmp-hash-config mpls-to-ip

Enables the mpls-to-ip type of ECMP hash configurations.


asr901-ecmp-hash-config ipv4-type

To specify equal-cost multi-path routing (ECMP) hashing algorithm for IPv4 configuration, use the asr901-ecmp-hash-config ipv4-type command in global configuration mode. To remove this configuration, use the no form of this command.

asr901-ecmp-hash-config ipv4-type {dest-addrs | dest-l4-port | l3-proto-id | outer-vlan | src-addrs | src-intf | src-l4-port} add

no asr901-ecmp-hash-config ipv4-type {dest-addrs | dest-l4-port | l3-proto-id | outer-vlan | src-addrs | src-intf | src-l4-port} add

Syntax Description

dest-addrs

Specifies the destination IPv4 address.

dest-l4-port

Specifies the destination Layer 4 port.

l3-proto-id

Specifies the Layer 3 protocol identifier.

outer-vlan

Specifies the outer virtual local area network (VLAN).

src-addrs

Specifies the source IPv4 address.

src-intf

Specifies the source or the incoming interface.

src-l4-port

Specifies the source Layer 4 port.

add

Adds IPv4 ECMP hash configuration.


Command Default

The ECMP parameters, such as dest-l4-port, src-intf, and src-l4-port, are disabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to configure IPv4 type ECMP hash configurations for improved load distribution of IP traffic. All the ECMP parameters are enabled by default except dest-l4-port, src-intf, and src-l4-port. You should configure the asr901-ecmp-hash-config ipv4-type command to enable them.

Examples

The following example shows how to configure IPv4 type ECMP hash configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# asr901-ecmp-hash-config ipv4-type dest-addrs
Router(config)# asr901-ecmp-hash-config ipv4-type dest-addrs add

Related Commands

Command
Description

asr901-ecmp-hash-config global-type

Enables the global-type of ECMP hash configurations.

asr901-ecmp-hash-config ipv6-type

Enables the ipv6-type of ECMP hash configurations.

asr901-ecmp-hash-config mpls-to-ip

Enables the mpls-to-ip type of ECMP hash configurations.


asr901-ecmp-hash-config ipv6-type

To specify equal-cost multi-path routing (ECMP) hashing algorithm for IPv6 configuration, use the asr901-ecmp-hash-config ipv6-type command in global configuration mode. To remove this configuration, use the no form of this command.

asr901-ecmp-hash-config ipv4-type {dest-addrs | dest-l4-port | ipv6-next-header | outer-vlan | src-addrs | src-intf | src-l4-port} add

no asr901-ecmp-hash-config ipv4-type {dest-addrs | dest-l4-port | ipv6-next-header | outer-vlan | src-addrs | src-intf | src-l4-port} add

Syntax Description

dest-addrs

Specifies the destination IPv6 address.

dest-l4-port

Specifies the destination Layer 4 port.

ipv6-next-header

Specifies the source or the incoming interface.

outer-vlan

Specifies the outer virtual local area network (VLAN).

src-addrs

Specifies the source IPv4 address.

src-intf

Specifies the source or the incoming interface.

src-l4-port

Specifies the source Layer 4 port.

add

Adds IPv6 ECMP hash configuration.


Command Default

The ECMP parameters, such as dest-l4-port, src-intf, and src-l4-port, are disabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to configure IPv6-type ECMP hash configurations for improved load distribution of IP traffic. All the ECMP parameters are enabled by default except dest-l4-port, src-intf, and src-l4-port. You should configure the asr901-ecmp-hash-config ipv6-type command to enable them.

Examples

The following example shows how to configure IPv6-type ECMP hash configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# asr901-ecmp-hash-config ipv6-type dest-addrs
Router(config)# asr901-ecmp-hash-config ipv6-type dest-addrs add

Related Commands

Command
Description

asr901-ecmp-hash-config global-type

Enables the global-type of ECMP hash configurations.

asr901-ecmp-hash-config ipv4-type

Enables the IPv4-type of ECMP hash configurations.

asr901-ecmp-hash-config mpls-to-ip

Enables the mpls-to-ip type of ECMP hash configurations.


asr901-ecmp-hash-config mpls-to-ip

To specify equal-cost multi-path routing (ECMP) hashing algorithm for Multiprotocol Label Switching (MPLS) to IP configuration, use the asr901-ecmp-hash-config mpls-to-ip command in global configuration mode. To remove this configuration, use the no form of this command.

asr901-ecmp-hash-config mpls-to-ip {dest-addrs | dest-l4-port | l3-proto-id | outer-vlan | src-addrs | src-intf | src-l4-port} add

no asr901-ecmp-hash-config mpls-to-ip {dest-addrs | dest-l4-port | l3-proto-id | outer-vlan | src-addrs | src-intf | src-l4-port} add

Syntax Description

dest-addrs

Specifies the destination IPv4 address.

dest-l4-port

Specifies the destination Layer 4 port.

l3-proto-id

Specifies the Layer 3 protocol ID.

outer-vlan

Specifies the outer virtual local area network (VLAN).

src-addrs

Specifies the source IPv4 address.

src-intf

Specifies the source or the incoming interface.

src-l4-port

Specifies the source Layer 4 port.

add

Adds ECMP hash configuration.


Command Default

The ECMP parameters, such as dest-l4-port, src-intf, and src-l4-port, are disabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to configure MPLS to IP-type ECMP hash configurations. All the ECMP parameters are enabled by default except dest-l4-port, src-intf, and src-l4-port. You should configure the asr901-ecmp-hash-config mpls-to-ip command to enable them.

Examples

The following example shows how to configure MPLS to IP-type ECMP hash configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# asr901-ecmp-hash-config mpls-to-ip dest-addrs
Router(config)# asr901-ecmp-hash-config mpls-to-ip dest-addrs add

Related Commands

Command
Description

asr901-ecmp-hash-config global-type

Enables the global-type of ECMP hash configurations.

asr901-ecmp-hash-config ipv4-type

Enables the IPv4-type of ECMP hash configurations.

asr901-ecmp-hash-config ipv6-type

Enables the IPv6-type of ECMP hash configurations.


asr901-multicast source

To send the multicast packets to the CPU enabling it to transmit register packets to Rendezvous Point (RP), use the asr901-multicast source command on the interface configuration mode. Use the no form of the command to disable transmission of multicast packets.

asr901-multicast source

no asr901-multicast source

Syntax Description

This command has no arguments or keywords.

Command Default

This command is enabled by default.

Command Modes

Interface configuration (config-if)#

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command should be enabled on the SVI interface that is connected to the traffic source. After the configuration, normal Protocol Independent Multicast sparse mode (PIM-SM) register process begins.

Examples

This example shows how to enable multicast on a Cisco ASR 901 series router:

Router# configure terminal
Router(config)# interface type number
Router(config-if)# asr901-multicast source
 
 

asr901-platf-frr enable

To enable traffic engineering (TE) Fast Reroute (FRR) link protection on the Cisco ASR 901 router, use the asr901-platf-frr command in global configuration mode. To delete this configuration, use the no form of this command.

asr901-platf-frr enable

no asr901-platf-frr enable

Syntax Description

This command has no arguments or keywords.

Command Default

The TE-FRR functionality is not enabled.

Command Modes

Global configuration (config)

Command History

Release
Modification

15.2(2)SNG

This command was introduced.


Examples

The following example shows how to enable TE-FRR on the Cisco ASR 901 router:

Router# configure terminal 
Router#(config) asr901-platf-frr enable 

asr901-platf-multicast enable

To enable multicast on the Cisco ASR 901 series routers, use the asr901-platf-multicast enable command. Use the no form of the command to disable multicast.

asr901-platf-multicast enable

no asr901-platf-multicast enable

Syntax Description

This command has no arguments or keywords.

Command Default

This command is enabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to enable platform multicast on a Cisco ASR 901 series router.

Examples

This example shows how to enable multicast on a Cisco ASR 901 series router:

Router# configure terminal
Router(config)# ip multicast-routing
Router(config)# asr901-platf-multicast enable
 
 
 
 

Related Commands

Command
Description

show asr901 multicast-support

Displays the platform support for IPv4 or IPv6 multicast on the Cisco ASR 901 series routers.


 
 

asr901-platf-multi-nni-cfm

To enable the multi-Network-to-Network Interface Connectivity Fault Management (multi-NNI CFM) configuration, use the asr901-platf-multi-nni-cfm command. Use the no form of the command to enable the Synthetic Loss Measurement (SLM) over cross connect EVC configuration.

asr901-platf-multi-nni-cfm

no asr901-platf-multi-nni-cfm

Syntax Description

This command has no arguments or keywords.

Command Default

This command is enabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.3(3)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to enable multi-NNI CFM configuration or SLM over cross connect EVC configuration on a Cisco ASR 901 router. You can configure by enabling or disabling the command. By default, the multi-NNI CFM configuration is enabled. When you run the required command , a syslog is generated so that you can save the configuration and reload the router. You should reload the router after using the asr901-multi-nni-cfm command or no form of the command.

Examples

This example shows how to enable multi-NNI CFM over cross connect EVC configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# asr901-platf-multi-nni-cfm
 
 

This example shows how to enable SLM over cross connect EVC configuration on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# no asr901-platf-multi-nni-cfm
 
 

bfd all-interfaces

To enable Bidirectional Forwarding Detection (BFD) for all interfaces participating in the routing process, use the bfd all-interfaces command in router configuration mode. To disable BFD for all interfaces, use the no form of this command.

bfd all-interfaces

no bfd all-interfaces

Syntax Description

This command has no arguments or keywords.

Command Default

BFD is not enabled on the interfaces participating in the routing process.

Command Modes

Router configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

There are two methods to configure routing protocols to use BFD for failure detection. To enable BFD for all neighbors of a routing protocol, enter the bfd all-interfaces command in router configuration mode. If you do not want to enable BFD on all interfaces, enter the bfd interface command in router configuration mode.

Examples

The following example shows BFD enabled for all Intermediate System-to-Intermediate System (IS-IS) neighbors:

Router> enable
Router# configure terminal
Router(config)# router isis tag1
Router(config-router)# bfd all-interfaces
Router(config-router)# end
 
 

The following example shows BFD enabled for all Open Shortest Path First (OSPF) neighbors:

Router> enable
Router# configure terminal
Router(config)# router ospf 123
Router(config-router)# bfd all-interfaces
Router(config-router)# end

Related Commands

Command
Description

bfd

Sets the baseline BFD session parameters on an interface.

bfd interface

Enables BFD on a per-interface basis for a BFD peer.


bfd interval

To set the baseline Bidirectional Forwarding Detection (BFD) session parameters on an interface, use the bfd command in interface configuration mode. To remove the baseline BFD session parameters, use the no form of this command.

bfd interval milliseconds min_rx milliseconds multiplier multiplier-value

no bfd interval milliseconds min_rx milliseconds multiplier multiplier-value

Syntax Description

interval milliseconds

Specifies the rate at which BFD control packets will be sent to BFD peers. The configurable time period for the milliseconds argument is from 50 to 999 milliseconds (ms).

min_rx milliseconds

Specifies the rate at which BFD control packets will be expected to be received from BFD peers. The configurable time period for the milliseconds argument is from 1 to 999 milliseconds (ms).

multiplier multiplier-value

Specifies the number of consecutive BFD control packets that must be missed from a BFD peer before BFD declares that the peer is unavailable and the Layer 3 BFD peer is informed of the failure. The configurable value range for the multiplier-value argument is from 3 to 50.


Command Default

No baseline BFD session parameters are set.

Command Modes

Interface configuration (config-if)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows the BFD session parameters set for Fast Ethernet interface 3/0:

Router> enable
Router# configure terminal
Router(config)# interface vlan1
Router(config-if)# bfd interval 50 min_rx 3 multiplier 3
Router(config-if)# end
 
 
 
 

Related Commands

Command
Description

bfd all-interfaces

Enables BFD for all interfaces for a BFD peer.

bfd interface

Enables BFD on a per-interface basis for a BFD peer.

ip ospf bfd

Enables BFD on a specific interface configured for OSPF.


channel-group (interface)

To assign and configure an EtherChannel interface to an EtherChannel group, use the channel-group command in interface configuration mode. To remove the channel-group configuration from the interface, use the no form of this command.

channel-group number mode {active | on | passive}

no channel-group number

Syntax Description

number

Integer that identifies the channel-group. Valid values are from 1 to 256; the maximum number of integers that can be used is 64.

For Fast EtherChannel groups, the number is an integer from 1 to 4. This number is the one previously assigned to the port-channel interface.

mode

Specifies the EtherChannel mode of the interface.

active

Enables Link Aggregation Control Protocol (LACP) unconditionally.

on

Enables EtherChannel only.

passive

Enables LACP only when an LACP device is detected. This is the default state.


Command Default

No channel groups are assigned.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The on Keyword

When you use the on keyword, a usable EtherChannel exists only when a port group in on mode is connected to another port group in the on mode.

You can change the mode for an interface only if it is the only interface that is designated to the specified channel group.

The on keyword forces the bundling of the interface on the channel without any negotiation.

With the on mode, a usable EtherChannel exists only when a port group in on mode is connected to another port group in on mode.

If you enter the channel-group command on an interface that is added to a channel with a different protocol than the protocol you are entering, the command is rejected.

If the interface belongs to a channel, the no form of this command is rejected.

All ports in the same channel group must use the same protocol; you cannot run two protocols on one channel group.

You can change the protocol at any time, but this change causes all existing EtherChannels to reset to the default channel mode for the new protocol.

Configure all ports in an EtherChannel to operate at the same speed and duplex mode (full duplex only for LACP mode).

All ports in a channel must be on the same DFC-equipped module. You cannot configure any of the ports to be on other modules.

On systems that are configured with nonfabric-enabled modules and fabric-enabled modules, you can bundle ports across all modules, but those bundles cannot include a DFC-equipped module port.

You do not have to create a port-channel interface before assigning a physical interface to a channel group. A port-channel interface is created automatically when the channel group gets its first physical interface, if it is not already created.

You do not have to disable the IP address that is assigned to a physical interface that is part of a channel group, but it is highly recommended.

You can create both Layer 2 and Layer 3 port channels by entering the interface port-channel command or when the channel group gets its first physical interface assignment. The port channels are not created at runtime or dynamically.

Any configuration or attribute changes that you make to the port-channel interface are propagated to all interfaces within the same channel group as the port channel (for example, configuration changes are also propagated to the physical interfaces that are not part of the port channel but are part of the channel group).

When configuring Layer 2 EtherChannels, you cannot put Layer 2 LAN ports into manually created port-channel logical interfaces.


Caution Caution Do not enable Layer 3 addresses on the physical EtherChannel interfaces. Assigning bridge groups on the physical EtherChannel interfaces causes loops in your network.

Examples

This example shows how to add EtherChannel interface 1/0 to the EtherChannel group that is specified by port-channel 1:

Router(config-if)# channel-group 1 mode on 
Router(config-if)# 
 
 

Related Commands

Command
Description

interface

Creates a port-channel virtual interface and puts the CLI in interface configuration mode when the port-channel keyword is used.

ip address

Sets a primary or secondary IP address on an interface.

show etherchannel

Displays the EtherChannel information for a channel.

show interfaces port-channel

Displays traffic that is seen by a specific port channel.


channel-protocol (interface)

To enable Link Aggregation Control Protocol (LACP) on an interface to manage channeling, use the channel-protocol command in interface configuration mode. Use the no form of this command to deselect the protocol.

channel-protocol {lacp}

no channel-protocol

Syntax Description

lacp

Specifies LACP to manage channeling.


Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command is valid on multiple interfaces (for example, Fast Ethernet) and routers and switches.

Examples

The following example shows how to set the lacp.

(config-if)# channel-protocol lacp
 
 

class (policy-map)

To specify the name of the class whose policy you want to create or change or to specify the default class (commonly known as the class-default class) before you configure its policy, use the class command in policy-map configuration mode. To remove a class from the policy map, use the no form of this command.

class {class-name | class-default}

no class {class-name | class-default}

Syntax Description

class-name

Name of the class to be configured or whose policy is to be modified. The class name is used for both the class map and to configure a policy for the class in the policy map.

class-default

Specifies the default class so that you can configure or modify its policy.


Command Default

No class is specified.

Command Modes

Policy-map configuration (config-pmap)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Policy Map Configuration Mode

Within a policy map, the class (policy-map) command can be used to specify the name of the class whose policy you want to create or change. First, the policy map must be identified.

To identify the policy map (and enter the required policy-map configuration mode), use the policy-map command before you use the class (policy-map) command. After you specify a policy map, you can configure policy for new classes or modify the policy for any existing classes in that policy map.

Class Characteristics

The class name that you specify in the policy map ties the characteristics for that class—that is, its policy—to the class map and its match criteria, as configured using the class-map command.

When you configure policy for a class and specify its bandwidth and attach the policy map to an interface, class-based weighted fair queueing (CBWFQ) determines if the bandwidth requirement of the class can be satisfied. If so, CBWFQ allocates a queue for the bandwidth requirement.

When a class is removed, available bandwidth for the interface is incremented by the amount previously allocated to the class.

The maximum number of classes that you can configure for a router—and, therefore, within a policy map—is 64.

Predefined Default Class

The class-default keyword is used to specify the predefined default class called class-default. The class-default class is the class to which traffic is directed if that traffic does not match any of the match criteria in the configured class maps.

Examples

The following example configures a class policy included in the policy map called policy1. Class2 specifies policy for traffic with a CoS value of 2.

! The following commands create class-maps class1 and class2 
! and define their match criteria:
 
 
class-map class2
 match cos 2
 
 
! The following commands create the policy map, which is defined to contain policy
! specification for class2:
policy-map policy1
 
 
Router(config-pmap)# class class2
Router(config-pmap-c)# bandwidth 3000
Router(config-pmap-c)# random-detect
Router(config-pmap-c)# 
 
 

Related Commands

Command
Description

bandwidth (policy-map class)

Specifies or modifies the bandwidth allocated for a class belonging to a policy map.

class-map

Creates a class map to be used for matching packets to a specified class.

fair-queue (class-default)

Specifies the number of dynamic queues to be reserved for use by the class-default class as part of the default class policy.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

queue-limit

Specifies or modifies the maximum number of packets the queue can hold for a class policy configured in a policy map.

random-detect (interface)

Enables WRED or DWRED.

random-detect exponential-weighting-constant

Configures the WRED and DWRED exponential weight factor for the average queue size calculation.

random-detect precedence

Configures WRED and DWRED parameters for a particular IP Precedence.


class cem

To configure CEM interface parameters in a class that is applied to CEM interfaces together, use the class cem command in global configuration mode. This command works in the same manner for CEM interfaces as the pseudowire-class command does for xconnect.

class cem class-name

Syntax Description

class-name

The name of a CEM interface parameters class.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The class cem command allows you to configure CEM interface parameters in a class that is applied to CEM interfaces together. A class cem command includes the following configuration settings:

dejitter-buffer dejitter-in-ms

idle-pattern 8-bit-idle-pattern

payload-size payload-size-in-ms


Note You can improve the performance of packet reordering on TDM/PWE connections by using the increasing the size of the dejitter buffer using the dejitter-buffer parameter.


Examples

The following example shows how to configure CEM interface parameters:

Router# config t
Router(config)# class cem mycemclass
Router(config-cem-class)# dejitter-buffer 10
Router(config-cem-class)# exit
Router(config)# interface cem 0/0
Router(config-if)# no ip address
Router(config-if)# cem 0
Router(config-if-cem)# xconnect 10.10.10.10 200 encapsulation mpls
Router(config-if-cem-xconn)# cem class mycemclass
Router(config-if-cem)# exit
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

dejitter-buffer

Specifies the size of the dejitter buffer used for network jitter in CEM configuration mode.

idle-pattern

Specifies the data pattern to transmit on the T1/E1 line when missing packets are detected on the PWE3 circuit in CEM configuration mode.

cem

Enters circuit emulation configuration mode.


clear platform ptp stats

To clear the statistics of ptp protocol on the Cisco ASR 901 router, use the clear platform ptp stats command.

clear platform ptp stats

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows sample output for clear platform ptp stats command:

Router# clear platform ptp stats
 
 
PTP counters cleared
 
 

Related Commands

Command
Description

show platform ptp stats

Displays statistics about the ptp protocol on the Cisco ASR 901 router.


clock-port

Specifies the mode of a PTP clock port.

clock-port port-name port-role

no clock-port port-name port-role

Syntax Description

name

Specifies a name for the clock port.

port-role

Specifies the role of the clock port, which can be slave or master.

slave—Sets the clock port to PTP slave mode; the port exchanges timing packets with a PTP master device.

master—Sets the clock port to PTP master mode; the port exchanges timing packets with PTP slave devices.


Defaults

This command is disabled by default.

Command Modes

PTP clock configuration mode

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to configure a PTP clock port.

Router# config terminal
Router(config)# ptp clock ordinary domain 0
Router(config-ptp-clk)# clock-port SLAVE slave
Router(config-ptp-port)# transport ipv4 unicast interface loopback
Router(config-ptp-clk)# clock-source 8.8.8.1
 
 

Related Commands

Command
Description

ptp clock

Creates a PTP clock instance.


clock-destination

Specifies the IP address of a clock destination. This command applies only when the router is in PTP master unicast mode.

ptp clock-destination clock-ip-address

no ptp clock-destination clock-ip-address

Syntax Description

clock-ip-address

The IP address of the clock destination.


Defaults

There is no default setting.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

If the router is set to ptp master unicast, you can only configure a single destination. If the router is set to ptp master unicast negotiation, you do not need to use this command as the router uses negotiation to determine the IP address of PTP slave devices.

Examples

The following example shows how to configure a PTP announcement:

Router(config-ptp-clk)# clock-port MASTER Master
Router(config-ptp-port)# transport ipv4 unicast interface loopback
Router(config-ptp-port)#clock destination 8.8.8.2
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

ptp enable

Enables PTP mode on an interface.

ptp master

Sets an interface in master clock mode for PTP clocking

ptp mode

Specifies the PTP mode.

ptp clock-source

Specifies a PTP clock source.


clock source (interface)

To set the clock source on the interface, use the clock source command in interface configuration mode. To restore the default clock source, use the no form of this command.

clock source clock-ip-address

no clock source clock-ip-address

Syntax Description

clock-ip-address

The IP address of the clock source.


Defaults

There is no default setting.

Command Modes

Interface configuration mode.

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

By default, the clock source on the interface is set to internal.

Examples

The following example instructs the controller to use an internal clock source:

Router(config-ptp-clk)# clock-port SLAVE slave
Router(config-ptp-port)# transport ipv4 unicast interface loopback 0
Router(config-ptp-port)#clock source 2.2.2.2
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

ptp slave

Sets an interface in slave clock mode for PTP clocking

ptp mode

Specifies the PTP mode.

ptp clock-destination

Specifies a PTP clock destination.


controller

To configure a T1 or E1 controller and enter controller configuration mode, use the controller command in global configuration mode.

controller {t1 | e1 } slot/port/subslot number/port number

Syntax Description

t1

T1 controller.

e1

E1 controller.

slot/port

Backplane slot number and port number on the interface. Refer to your hardware installation manual for the specific values and slot numbers.

subslot number

Defines the subslot on the router in which the HWIC is installed.

port

Port number of the controller. Valid numbers are 0 and 1. The slash mark (/) is required between the slot argument and the port argument.


Defaults

No T1 or E1 controller is configured.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Related Commands

Command
Description

show controllers e1

Displays information about the E1 controller.

show controllers t1

Displays the total number of calls and call durations on a T1 controller.


cpu traffic ppp set ip dscp cs

To re-mark the CPU generated traffic from default value (DSCP CS6) to the desired differentiated service code point (DSCP) value for QoS treatment, use the cpu traffic ppp set ip dscp cs command on the global configuration mode. Use the no form of the command to reset matching of packets with DSCP Certificate Server (CS).

cpu traffic ppp set ip dscp cs

no cpu traffic ppp set ip dscp cs

Syntax Description

This command has no arguments or keywords.

Command Default

None

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to mark the CPU generated traffic transmitted through MLPPP Interface. It enables the user to provide desired QoS treatment to CPU generated traffic. The valid values are from cs1 to cs7.

Examples

This example shows how to re-mark the CPU generated traffic from default value to the desired DSCP value for QoS treatment on a Cisco ASR 901 series router:

Router# configure terminal
Router(config)# cpu traffic ppp set ip dscp cs5
 
 

cpu traffic ppp set mpls experimental topmost

To re-mark the CPU generated traffic from default value (MPLS EXP 6) to the desired EXP value for QoS treatment, use the cpu traffic ppp set mpls experimental topmost command on the global configuration mode. Use the no form of the command to revert to the default values.

cpu traffic ppp set mpls experimental topmost value

no cpu traffic ppp set mpls experimental topmost value

Syntax Description

value

Multiprotocol Label Switching (MPLS) EXP field in the topmost label header. Valid values are 0 to 7.


Command Default

None

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to mark the CPU generated traffic transmitted through MLPPP Interface. It enables the user to provide desired QoS treatment to CPU generated traffic. The valid values are from 0 to 7.

Examples

This example shows how to re-mark the CPU generated traffic from default value to the desired MPLS EXP value for QoS treatment on a Cisco ASR 901 series router:

Router# configure terminal
Router(config)# cpu traffic ppp set mpls experimental topmost 6 
 
 

debug platform tcam error

To enable Ternary Content Addressable Memory (TCAM) error printing, use the debug platform tcam error command in the privileged EXEC mode. To disable TCAM error printing, use the no debug platform tcam error command.

debug platform tcam error

no debug platform tcam error

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Examples

The following is sample output from the debug platform tcam error command:

Router# debug platform tcam error
TCAM Error printing turned ON
 
 

debug platform tcam info

To enable TCAM info printing, use the debug platform tcam info command in the privileged EXEC mode. To disable TCAM info printing, use the no debug platform tcam info command.

debug platform tcam info

no debug platform tcam info

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Examples

The following is sample output from the debug platform tcam info command:

Router# debug platform tcam info
TCAM Info printing turned ON

dejitter-buffer

To configure the size of the dejitter buffer, use the dejitter-buffer command in CEM configuration mode. To restore the dejitter buffer to its default size, use the no form of this command.

dejitter-buffer size

no dejitter-buffer

Syntax Description

size

Specifies the size of the dejitter buffer in milliseconds. The range is 4 to 500 ms; the default is 4 ms.


Defaults

The default dejitter-buffer size is 4 milliseconds.

Command Modes

CEM configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to specify the size of the dejitter buffer:

Router# config t
Router(config)# interface cem 0/0
Router(config-if)# no ip address
Router(config-if)# cem 0
Router(config-if-cem)# dejitter-buffer 10
Router(config-if-cem)# xconnect 10.10.10.10 200 encapsulation mpls
Router(config-if-cem-xconn)# exit
Router(config-if-cem)# exit
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

cem

Enters circuit emulation configuration mode.

cem class

Applies the CEM interface parameters defined in the given CEM class name to the circuit.

class cem

Configures CEM interface parameters in a class that's applied to CEM interfaces together in global configuration mode.


dmm responder hardware timestamp

To configure hardware-based timestamping, use the dmm responder hardware timestamp command in Maintenance End Point (MEP) configuration mode. To disable hardware-based time stamping, use the no form of this command.

dmm responder hardware timestamp

no dmm responder hardware timestamp

Syntax Description

This command has no arguments or keywords.

Command Default

Hardware-based timestamping is disabled on the receiver MEP.

Command Modes

MEP configuration (config-if-srv-ecfm-mep)

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Router.


Examples

The following example shows how to configure hardware-based timestamping on the receiver MEP:

Router> enable
Router# configure terminal
Router(config)# interface GigabitEthernet 0/0
Router(config-if)# service instance 1310 ethernet ssvc1310
Router(config-if-srv)# encapsulation dot1q 1310
Router(config-if-srv)# rewrite ingress tag pop 1 symmetric
Router(config-if-srv)# bridge-domain 1310
Router(config-if-srv)# cfm mep domain sdmm mpid 1310
Router(config-if-srv-ecfm-mep)# dmm responder hardware timestamp

Related Commands

Command
Description

bridge-domain (service instance)

Binds a service instance or a MAC tunnel to a bridge domain instance.

cfm mep domain

Configures MEP for a domain.

encapsulation dot1q (service instance)

Defines the matching criteria to map 802.1Q frames ingress on an interface to the appropriate service instance

rewrite ingress tag

Specifies the encapsulation adjustment to be performed on a frame ingressing a service instance.

service instance ethernet

Configures an Ethernet service instance on an interface.


duplex

To configure duplex operation on an interface, use the duplex command in interface configuration mode. Use the no form of this command to return to the default value.

duplex {full | half | auto}

no duplex

Syntax Description

full

Specifies full-duplex operation.

half

Specifies half-duplex operation.

auto

Enables autonegotiation. The interface automatically operates at half or full duplex depending on environmental factors, such as the type of media and the transmission speeds for the peer routers, hubs, and switches used in the network configuration.


Defaults

Half-duplex mode

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

General Usage Guidelines

To use the autonegotiation capability (that is, detect speed and duplex modes automatically), you must set both the speed command and duplex command to auto.

Duplex Options and Interfaces

Table 2-1 lists the supported command options by interface.

Table 2-1 Supported duplex Command Options

Interface Type
Supported Syntax
Default Setting
Usage Guidelines

Gigabit Ethernet Interfaces

duplex full

full

 

10-Mbps ports

duplex [half | full]

half

 

If the transmission speed on a 16-port RJ-45 Gigabit Ethernet port is set to 1000, the duplex mode is set to full. If the transmission speed is changed to 10 or 100, the duplex mode stays at half duplex. You must configure the correct duplex mode when the transmission speed is changed to 10 or 100 from 1000.

Gigabit Ethernet is full duplex only. You cannot change the duplex mode on Gigabit Ethernet ports or on a 10/100/1000-Mbps port that is configured for Gigabit Ethernet.

When manually configuring the interface speed to either 10 or 100 Mbps, you should also configure the duplex mode on the interface.


Caution Changing the interface speed and duplex mode configuration might shut down and reenable the interface during the reconfiguration.

Table 2-2 describes the interface behavior for different combinations of the duplex and speed command settings. The specified duplex command configured with the specified speed command produces the resulting system action.

If you specify both a duplex and speed setting other than auto on an RJ-45 interface, then autonegotiation is disabled for the interface.


Note If you need to force an interface port to operate with certain settings and therefore disable autonegotiation, you must be sure that the remote link is configured with compatible link settings for proper transmission. This includes support of flow control on the link.


Table 2-2 Relationship Between duplex and speed Commands 

duplex Command
speed Command
Resulting System Action

duplex auto

speed auto

Autonegotiates both speed and duplex mode. The interface advertises capability for the following link settings:

10 Mbps and half duplex

10 Mbps and full duplex

100 Mbps and half duplex

100 Mbps and full duplex

1000 Mbps and half duplex

1000 Mbps and full duplex

duplex auto

speed 10 or speed 100 or speed 1000

Autonegotiates the duplex mode. The interface advertises capability for the configured speed with capability for both half-duplex or full-duplex mode.

For example, if the speed 100 command is configured with duplex auto, then the interface advertises the following capability:

100 Mbps and half duplex

100 Mbps and full duplex

duplex half or duplex full

speed auto

Autonegotiates the speed. The interface advertises capability for the configured duplex mode with capability for both 10-Mbps and 100-Mbps operation for Fast Ethernet interfaces, and 10-Mbps, 100-Mbps, and 1000-Mbps for Gigabit Ethernet interfaces.

For example, if the duplex full command is configured with the speed auto command, then the interface advertises the following capability:

10 Mbps and full duplex

100 Mbps and full duplex

1000 Mbps and full duplex (Gigabit Ethernet interfaces only)

duplex half

speed 10

Forces 10-Mbps and half-duplex operation, and disables autonegotiation on the interface.

duplex full

speed 10

Forces 10-Mbps and full-duplex operation, and disables autonegotiation on the interface.

duplex half

speed 100

Forces 100-Mbps and half-duplex operation, and disables autonegotiation on the interface.

duplex full

speed 100

Forces 100-Mbps and full-duplex operation, and disables autonegotiation on the interface.

duplex half

speed 1000

Forces 1000-Mbps and half-duplex operation, and disables autonegotiation on the interface (Gigabit Ethernet only).

duplex full

speed 1000

Forces 1000-Mbps and full-duplex operation, and disables autonegotiation on the interface (Gigabit Ethernet only).


Examples

The following example shows how to configure duplex auto operation:

Router(config)# interface gigabitethernet0/0
Router(config-if)# duplex auto
 
 

Related Commands

Command
Description

interface

Selects an interface to configure and enters interface configuration mode.

interface gigabitethernet

Selects a particular Gigabit Ethernet interface for configuration.

show controllers

Displays information that is specific to the hardware on a module.

show controllers gigabitethernet

Displays Gigabit Ethernet interface information, transmission statistics and errors, and applicable MAC destination address and VLAN filtering tables.

show interfaces

Displays traffic that is seen by a specific interface.

show interfaces gigabitethernet

Displays information about the Gigabit Ethernet interfaces.

speed

Sets the port speed for a Fast Ethernet interface.


encapsulation dot1q (service instance)

To define the matching criteria to map 802.1Q frames ingress on an interface to the appropriate service instance, use the encapsulation dot1q command in the service instance mode. To delete the matching criteria to map 802.1Q frames ingress on an interface to the appropriate service instance, use the no form of this command.

encapsulation dot1q vlan-id[,vlan-id[-vlain-id]] [native]

no encapsulation dot1q vlan-id[,vlan-id[-vlain-id]] [native]

Syntax Description

vlan-id

VLAN ID, integer in the range 1 to 4094. Hyphen must be entered to separate the starting and ending VLAN ID values that are used to define a range of VLAN IDs. Optional) Comma must be entered to separate each VLAN ID range from the next range.

native

(Optional) Sets the VLAN ID value of the port to the value specified by the vlan-id argument.


.

Command Default

No matching criteria are defined.

Command Modes

Service instance

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The criteria for this command are: single VLAN, range of VLANs, and lists of the previous two.

A single 802.1Q service instance, allows one VLAN, multiple VLANs, or a range of VLANs. The native keyword can only be set if a single VLAN tag has been specified.

Only a single service instance per port is allowed to have the native keyword.

Only one encapsulation command may be configured per service instance.

Examples

The following example shows how to map 802.1Q frames ingress on an interface to the appropriate service instance:

Router(config-if-srv)# encapsulation dot1q 10

Related Commands

Command
Description

encapsulation dot1q second-dot1q

Defines the matching criteria to map Q-in-Q ingress frames on an interface to the appropriate service instance.

encapsulation untagged

Defines the matching criteria to map untagged ingress Ethernet frames on an interface to the appropriate service instance.


 
 

encapsulation dot1ad

To define the matching criteria to be used in order to map single-tagged 802.1ad frames ingress on an interface to the appropriate service instance, use the encapsulation dot1ad command in the service instance mode. To delete the matching criteria to map 802.1ad frames ingress on an interface to the appropriate service instance, use the no form of this command.

encapsulation dot1ad {vlan-id[,vlan-id[-vlain-id]] | any}

no encapsulation dot1ad

Syntax Description

vlan-id

VLAN ID, integer in the range 1 to 4094. Hyphen must be entered to separate the starting and ending VLAN ID values that are used to define a range of VLAN IDs. (Optional) Comma must be entered to separate each VLAN ID range from the next range.

any

Matches any packet with one or more VLANs.


Command Default

No matching criteria are defined.

Command Modes

Service instance

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

An interface with encapsulation dot1ad causes the router to categorize the interface as an 802.1ad interface. This causes special processing for certain protocols and other features:

MSTP uses the IEEE 802.1ad MAC STP address instead of the STP MAC address.

Certain QoS functions may use the Drop Eligibility (DE) bit of the IEEE 802.1ad tag.

The encapsulation dot1ad command requires the interface to be of dot1ad nni (network-network interface) port.

 
 

Related Commands

Command
Description

encapsulation dot1q

Defines the matching criteria to map 802.1Q frames ingress on an interface to the appropriate service instance.

encapsulation dot1q second dot1q

Double-tagged 802.1Q encapsulation. Matching criteria to be used to map QinQ frames ingress on an interface to the appropriate EFP. The outer tag is unique and the inner tag can be a single VLAN, a range of VLANs or lists of VLANs or VLAN ranges.

encapsulation untagged

Matching criteria to be used to map untagged (native) Ethernet frames entering an interface to the appropriate EFP.


 
 

esmc mode

To enable or disable ESMC process on the interface, use the esmc mode command in interface configuration mode. Use the no form of this command to disable the configuration

esmc mode <tx | rx >

no esmc mode

Syntax Description

tx

Transmission mode

rx

Receiving mode


Command Default

Enabled for synchronous mode and disabled for asynchronous mode.

Command Modes

Interface configuration (config-if)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

If the interface is configured as line source but does not receive ESMC message from peer node on the interface, then the interface is removed from selectable clock source list. By default this is enabled for synchronous mode and disabled for asynchronous mode.


Note This command is not supported for non-synchronous ethernet interfaces.


Examples

The following example shows how to enable ESMC process:

Router(config-if)#esmc mode tx

Related Commands

Command
Description

esmc process

Enables the ESMC process in a router.

show esmc

Displays the enabled ESMCs in a router.

show interfaces accounting

Displays the number of packets of each protocol type that have been sent through all configured interfaces.


 
 

ethernet loopback

To start or stop an ethernet loopback function on an interface, use the ethernet loopback privileged EXEC command.

ethernet loopback start local interface type number [service instance instance-number] {external | internal} source mac-address source-address [destination mac-address destination-address] timeout {time-in-seconds | none}

or

ethernet loopback stop local interface type number id session id

Syntax Description

start

Starts the Ethernet loopback operation configured on the interface.

stop

Stops the Ethernet loopback operation configured on the interface.

local interface type number

Specifies the interface on which to start or stop the loopback operation.

service-instance instance-number

Specifies the service instance ID. This is an optional field.

external | internal source mac-address source-address

Specifies the external or internal source MAC address for the loopback operation.

destination mac-address destination-address

Specifies the destination MAC address for the loopback operation. This is an optional field.

timeout {time-in-seconds | none}

Specifies the timeout interval in seconds. The range is from 0 to 90000 seconds. The default is 300 seconds.

Specify timeout none to set the loopback to no time out.

id session id

Specifies the data plane loopback session ID. The range is from 1 to 3.

all

Stop all Ethernet loopback operations on the switch. This keyword is available only after the stop keyword.


Command Default

None

Command Modes

Privileged EXEC

Command History

Release
Modification

15.2(2)SNG

This command was introduced on the Cisco ASR 901 router.


Usage Guidelines

You cannot start terminal loopback. You can configure ethernet loopback and use the ethernet loopback start or ethernet loopback stop command only for physical ports and not for VLANs.

Examples

The following example shows how to start a facility port loopback process, verify it, and then to stop it:

Router(config)# interface gigabitEthernet0/1
Router(config-if)# service instance 10 ethernet
Router(config-if-srv)# encapsulation dotlq 10
Router(config-if-srv)# rewrite ingress tag pop1
Router(config-if-srv)# bridge domain 10
Router(config-if-srv)# end
Router# ethernet loopback start local interface gigabitEthernet 0/1 service instance 10
internal source mac-address 0123.4567.89ab destination mac-address 255.255.255 timeout
9000
Router# ethernet loopback stop local interface gigabitEthernet 0/1 id 3

Related Commands

Command
Description

show ethernet loopback

Shows information about the per port Ethernet loopbacks configured on a router or an interface.


ethernet oam remote-failure action

To enable Ethernet Operations, Administration, and Maintenance (OAM) remote failure actions, use the ethernet oam remote-failure action command in interface configuration mode. To turn off remote failure actions, use the no form of this command.

ethernet oam remote-failure {critical-event | dying-gasp | link-fault} action {error-block-interface | error-disable-interface}

no ethernet oam remote-failure {critical-event | dying-gasp | link-fault} action

Syntax Description

critical-event

Specifies remote critical event failures.

dying-gasp

Specifies remote dying-gasp failures.

link-fault

Specifies remote link-fault failures.

error-block-interface

Sets the interface to the blocking state when an error occurs.

error-disable-interface

Disables the interface when an error occurs.


Command Default

Actions in response to Ethernet OAM remote failures do not occur.

Command Modes

Interface configuration (config-if)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use this command to configure an interface to take specific actions when Ethernet OAM remote-failure events occur.

Release 15.1(2)SNG does not support sending critical-event messages but can receive all three message types.

Examples

The following example shows how to configure the action that the Ethernet 1/1 interface takes when a critical event occurs:

Router# configure terminal 
Router(config)# interface ethernet 1/1
Router(config-if)# ethernet oam remote-failure critical-event action 
error-disable-interface

idle-pattern

To specify the data pattern transmitted on the T1/E1 line when missing packets are detected on the PWE3 circuit, use the idle-pattern command in CEM configuration mode. To stop sending idle pattern data, use the no form of this command.

idle-pattern [pattern]

no idle-pattern

Syntax Description

pattern

(Optional) An 8-bit hexadecimal number that is transmitted as the idle pattern. T1 and E1 channels require only this argument.


Defaults

For T1 or E1 channels, the default idle pattern is 0xFF.

Command Modes

CEM circuit configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The idle-pattern data is sent to replace the data from missing packets.

Examples

The following example shows how to specify a data pattern:

Router# config t
Router(config)# interface cem 0/0
Router(config-if)# no ip address
Router(config-if)# cem 0
Router(config-if-cem)# idle-pattern 0x55
Router(config-if-cem)# xconnect 10.10.10.10 200 encapsulation mpls
Router(config-if-cem-xconn)# exit
Router(config-if-cem)# exit
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

cem

Enters circuit emulation configuration mode.

cem class

Applies the CEM interface parameters defined in the given CEM class name to the circuit.

class cem

Configures CEM interface parameters in a class that's applied to CEM interfaces together in global configuration mode.


interface vlan

To create a dynamic Switch Virtual Interface (SVI), use the interface vlan command in global configuration mode.

interface vlan vlanid

no interface vlan vlanid

Syntax Description

vlanid

Unique VLAN ID number (1 to 4094) used to create or access a VLAN.


Command Default

None

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

SVIs are created the first time that you enter the interface vlan vlanid command for a particular VLAN. The vlanid value corresponds to the VLAN tag that is associated with the data frames on an Inter-Switch Link (ISL), the 802.1Q-encapsulated trunk, or the VLAN ID that is configured for an access port. A message displays whenever you create a new VLAN interface, so that you can check if you entered the correct VLAN number.

If you delete an SVI by entering the no interface vlan vlanid command, the associated initial domain part (IDP) pair is forced into an administrative down state and is marked as deleted. The deleted interface will not be visible in the show interface command.

You can reinstate a deleted SVI by entering the interface vlan vlanid command for the deleted interface. The interface comes back up, but much of the previous configuration is gone.

Examples

The following example shows the output when you enter the interface vlan vlanid command for a new VLAN number:

Router(config)# interface vlan 23
% Creating new VLAN interface.
 
 

interface atm ima

To configure an ATM IMA group and enter interface configuration mode, use the interface atm ima global configuration command. If the group does not exist when the command is issued, the command automatically creates the group.

interface atm slot/imagroup-number

Syntax Description

slot

Specifies the slot location of the ATM IMA port adapter.

group-number

Specifies an IMA group number from 0 to 3. You can create up to four groups.


Defaults

The interface includes individual ATM links, but no IMA groups.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

When a port is configured for IMA functionality, it no longer operates as an individual ATM link. Specifying ATM links as members of a group using the ima-group interface command does not enable the group. You must use the interface atm slot/imagroup-number command to create the group.

Examples

The following example shows the how to create the IMA group:

Router(config)# interface ATM0/IMA0
Router(config-if)# no ip address
 
 

Related Commands

Command
Description

ima-group

Configures the physical links as IMA group members; execute this interface configuration command for each physical link that you include in an IMA group.

ima group-id

Enables the user to configure the IMA Group ID for the IMA interface.

interface atm

Configures physical links for an ATM interface.

show ima interface atm

Displays general and detailed information about IMA groups and the links they include.


interface port-channel

To create an EtherChannel interface, use the interface port-channel command in global configuration mode. To remove this EtherChannel port from the Cisco CMTS, use the no form of this command.

interface port-channel number

no interface port-channel number

Syntax Description

number

Identifying port channel number for this interface (EtherChannel port). The range is 1 to 8.


Command Default

By default, EtherChannel groups and ports are not defined, and they are disabled (off mode) configured.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The first EtherChannel interface configured becomes the bundle master for all EtherChannel interfaces in the group. That is, the MAC address of the first EtherChannel interface is the MAC address for all EtherChannel interfaces in the group. If the first EtherChannel interface is later removed, the second EtherChannel interface to be configured becomes the bundled master by default.

Repeat this configuration on every EtherChannel port to be bundled into a FastEtherChannel (FEC) or GigabitEtherChannel (GEC) group. This configuration must be present on all EtherChannel interfaces before the EtherChannel group can be configured.

Examples

The following example configures the port to have an EtherChannel port number of 1 within its EtherChannel group. The EtherChannel group is defined with the channel-group command.

Router(config)# interface port-channel 1
 
 

Related Commands

Command
Description

channel-group

Assigns an EtherChannel port to an EtherChannel group.

show interface port-channel

Displays the EtherChannel interfaces and channel identifiers, with their mode and operational status.


interface range

To execute commands on multiple subinterfaces at the same time, use the interface range command in global configuration mode.

interface range {type number [- interface-number] [,] . . .type number | macro word}

no interface range type number

Syntax Description

type number

Interface type and interface or subinterface number. For more information about the numbering syntax for your networking device, use the question mark (?) online help function.

You can enter any number of interface type and numbers.

- interface-number

(Optional) Ending interface number.

,

Allows you to configure more interface types.

macro

Specifies a macro keyword.

word

Previously defined keyword, up to 32 characters long.


Command Default

No interface range is set.

Command Modes

Global configuration (config)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Configuration Changes

All configuration changes made to a range of subinterfaces are saved to NVRAM, but the range itself does not get saved to NVRAM. Use the define interface range command to create and save a range.

You can enter the range in two ways:

Specifying up to five interface ranges

Specifying a previously defined macro

You can specify either the interfaces or the name of a range macro. A range must consist of the same interface type, and the interfaces within a range cannot span slots.

You cannot specify both the interface range and macro keywords in the same command. After creating a macro, the command does not allow you to enter additional ranges. Likewise, if you have already specified an interface range, the command does not allow you to enter a macro.

VLANs

When you define a VLAN, valid values are from 1 to 4094. The last VLAN number cannot exceed 4094.

You cannot use the interface range command to create switch virtual interfaces (SVIs) in that particular range. You can use the interface range command only to configure existing VLAN SVIs within the range. To display VLAN SVIs, enter the show running-config command. VLANs not displayed cannot be used in the interface range command.

The commands entered under the interface range command are applied to all existing VLAN SVIs within the range.

You can enter the command interface range create vlan x - y to create all VLANs in the specified range that do not already exist. If you are using discontiguous VLANs, you can use the interface range vlan command to configure multiple SVIs without creating unneeded SVIs and wasting interface descriptor blocks (IDBs).

After specifying a VLAN range, you can continue using the interface range command to specify another interface (ATM, Fast Ethernet, Gigabit Ethernet, loopback, port-channel, or tunnel).


Note VLANs 4093, 4094, and 4095 are reserved and cannot be configured by the user.


Examples

interface range Gigabit Ethernet Example

The following example shows how to set a Gigabit Ethernet range:

Router(config)# interface range gigabitethernet 0/1 - 3
 
 

Related Commands

Command
Description

define interface range

Defines an interface range macro.

encapsulation dot1q

Applies a unique VLAN ID to each subinterface within the range.


ip tos

To configure the Type of Service (ToS) level for IP traffic, use the ip tos command in pseudowire class configuration mode. To disable a configured ToS value, use the no form of this command.

ip tos value value_number

no ip tos value value_number

Syntax Description

value value_number

Specifies the type of service (ToS) level for IP traffic in the pseudowire.


.

Defaults

The default ToS value is 0.

Command Modes

Pseudowire class configuration

Command History

Release
Modification

15.1(2)SNI

Support for this command was introduced on the Cisco ASR 901 router.


Examples

Router(config) # pseudowire-class ether-pw
Router(config-pw)# ip tos value 1

Related Commands

Command
Description

pseudowire-class

Specifies the name of a Layer 2 pseudowire-class and enters pseudowire-class configuration mode.


l3-over-l2 flush buffers

To enable l3-over-l2 flush buffers for layer 3 over layer 2 deployments, use the l3-over-l2 flush buffers command in global configuration mode. To remove this configuration, use the no form of this command.

l3-over-l2 flush buffers

no l3-over-l2 flush buffers

Syntax Description

flush

Configures flushing of layer 3 buffers.

buffers

Enables flushing of layer 3 buffers for layer 3 over layer 2 support.


Command Default

This command is enabled by default.

Command Modes

Global configuration (config)#

Command History

Release
Modification

15.2(2)SNG

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is required only when layer 3 is deployed over layer 2. When this command is enabled, ARP flushing is done whenever there is a MAC table flush.

You should use the no form of this command before configuring Layer 3 FRR features.

Examples

The following example shows how to enable l3-over-l2 flush buffers for layer 3 over layer 2 deployments on a Cisco ASR 901 router:

Router# configure terminal
Router(config)# l3-over-l2 flush buffers
 
 

l2proto-forward

To configure the forwarding of tagged Layer 2 Control Packets and dropping of untagged layer 2 control packets, use the l2proto-forward command in interface configuration mode. To delete this configuration, use the no form of this command.

l2proto-forward tagged {cdp | dtp | lacp | lldp | stp | udld | vtp}

no l2proto-forward tagged {cdp | dtp | lacp | lldp | stp | udld | vtp}

Syntax Description

cdp

Enables Cisco Discovery Protocol (CDP) tunneling.

dtp

Enables Dynamic Trunking Protocol (DTP) tunneling.

lacp

Enables Link Aggregration Control Protocol (LACP) tunneling.

lldp

Enables Link Layer Discovery Protocol (LLDP) tunneling.

stp

Enables Spanning Tree Protocol tunneling (STP).

udld

Enables UniDirectional Link Detection (UDLD) protocol tunneling.

vtp

Enables Vlan Trunking Protocol (VTP) tunneling.


Defaults

The default behavior is to peer the untagged layer 2 control packets and drop tagged layer 2 control packets.

Command Modes

Interface configuration (config-if)

Command History

Release
Modification

15.2(2)SNG

This command was introduced.


Usage Guidelines

Use this command to forward tagged and drop untagged layer 2 control protocol packets.

Examples

The following example shows how to configure the forwarding of tagged Layer 2 Control Packets and dropping of untagged layer 2 control packets using the l2proto-forward command.

Router# configure terminal 
Router#(config) interface gigabitethernet 0/1 
Router(config-if)# l2proto-forward tagged cdp

load-interval

To change the length of time for which data is used to compute load statistics, use the load-interval interface configuration command. Use the no form of this command to revert to the default setting.

load-interval seconds

no load-interval seconds

Syntax Description

seconds

Length of time for which data is used to compute load statistics. Specify a value that is a multiple of 30, from 30 to 600 (30, 60, 90, 120, and so forth).


Defaults

The default is 300 seconds (5 minutes).

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

If you want load computations to be more reactive to short bursts of traffic, rather than averaged over 5-minute periods, you can shorten the length of time over which load averages are computed.

If the load interval is set to 30 seconds, new data is used for load calculations over a 30-second period. This data is used to compute load statistics, including input rate in bits and packets per second, output rate in bits and packets per second, load, and reliability.

Load data is gathered every 5 seconds. This data is used for a weighted average calculation in which more-recent load data has more weight in the computation than older load data. If the load interval is set to 30 seconds, the average is computed for the last 30 seconds of load data.

The load-interval command allows you to change the default interval of 5 minutes to a shorter or longer period of time. if you change it to a shorter period of time, the input and output statistics that are displayed when you use the show interface command will be more current, and based on more instantaneous data, rather than reflecting a more average load over a longer period of time.

This command is often used for dial backup purposes, to increase or decrease the likelihood of a backup interface being implemented, but it can be used on any interface.

Examples

In the following example, the default 5-minute average is set to a 30-second average.

Router(config)# interface GigabitEthernet0/7
Router(config-if)# load-interval 30

Related Commands

Command
Description

show interfaces

Displays ALC information.


mac-flap-ctrl

To identify MAC flaps occurring in the router and to take preventive action, use the mac-flap-ctrl on per-mac command. To remove MAC flap control, use the no form of the command.

mac-flap-ctrl on per-mac <mac-movement> <time-interval>

no mac-flap-ctrl on per-mac <mac-movement> <time-interval>

Syntax Description

mac-movement

Maximum number of MAC movements that are allowed in the specified time.

time-interval

Time interval that can elapse before the MAC movements are tagged as flapping.


Command Default

The default values for the counters are five and ten; that is five movements in ten seconds.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNI

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Configure the maximum number of MAC movements that are allowed in a specified time interval, beyond which the MAC movement is termed as flapping. As preventive action, err-disabling is done in one of the ports that has MAC flapping.

Once the port is err-disabled, it can be administratively brought up using the shut and no shut commands.

Examples

The following example sets the maximum number of mac movements to 20 in 10 seconds, before a MAC flap is detected in the router.

Router(config)# mac-flap-ctrl on per-mac 20 10

Related Commands

Command
Description

None

None


match ip dscp

To identify a specific IP differentiated service code point (DSCP) value as a match criterion, use the match ip dscp class-map configuration command. To remove a specific IP DSCP value from a class map, use the no form of this command.

match ip dscp ip-dscp-value [ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value]

no match ip dscp ip-dscp-value [ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value]

Syntax Description

ip-dscp-value

Specifies the exact value from 0 to 63 used to identify an IP DSCP value.


Command Modes

Class-map configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Up to eight IP DSCP values can be matched in one match statement. For example, if you wanted the IP DSCP values of 0, 1, 2, 3, 4, 5, 6, or 7 (note that only one of the IP DSCP values must be a successful match criterion, not all of the specified IP DSCP values), enter the match ip dscp 0 1 2 3 4 5 6 7 command.

This command is used by the class map to identify a specific IP DSCP value marking on a packet. The ip-dscp-value arguments are used as markings only. The IP DSCP values have no mathematical significance. For instance, the ip-dscp-value of 2 is not greater than 1. The value simply indicates that a packet marked with an ip-dscp-value of 2 is different from a packet marked with an ip-dscp-value of 1. The treatment of these marked packets is defined by the user through the setting of QoS policies in policy-map class configuration mode.

Examples

The following example shows how to configure the service policy called priority55 and attach service policy priority55 to an interface. In this example, the class map called ipdscp15 evaluates all packets entering interface Fast Ethernet 0/0 for an IP DSCP value of 15. If the incoming packet has been marked with the IP DSCP value of 15, the packet is treated with a priority level of 55.

Router(config)# class-map ip dscp15
Router(config-cmap)# match ip dscp 15
Router(config-cmap)# exit
Router(config)# policy-map priority55
Router(config-pmap)# class ip dscp 15
Router(config-pmap-c)# priority55
Router(config-pmap-c)# exit
Router(config-pmap)# exit
Router(config)# interface gigabitethernet0/0
Router(config-if)# service-policy input priority55
 
 

Related Commands

Command
Description

class-map

Creates a class map to be used for matching packets to a specified class.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

set ip dscp

Marks the IP DSCP value for packets within a traffic class.

show class-map

Displays all class maps and their matching criteria.


match vlan

To match and classify traffic on the basis of the virtual local-area network (VLAN) identification number, use the match vlan command in class-map configuration mode. To remove a previously specified VLAN identification number as a match criterion, use the no form of this command.

match vlan vlan-id-number

no match vlan vlan-id-number

Syntax Description

vlan-id-number

VLAN identification number, numbers, or range of numbers. Valid VLAN identification numbers must be in the range of 1 to 4095.


Command Default

Traffic is not matched on the basis of the VLAN identification number.

Command Modes

Class-map configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Specifying VLAN Identification Numbers

You can specify a single VLAN identification number, multiple VLAN identification numbers separated by spaces (for example, 2 5 7), or a range of VLAN identification numbers separated by a hyphen (for example, 25-35).

Support Restrictions

The following restrictions apply to the match vlan command:

The match vlan command is supported for IEEE 802.1q and Inter-Switch Link (ISL) VLAN encapsulations only.

Examples

In the following sample configuration, the match vlan command is enabled to classify and match traffic on the basis of a range of VLAN identification numbers. Packets with VLAN identification numbers in the range of 25 to 50 are placed in the class called class1.

Router> enable

Router# configure terminal

Router(config)# class-map class1

Router(config-cmap)# match vlan 25-50

Router(config-cmap)# end

Related Commands

Command
Description

bandwidth (policy-map class)

Specify or modifies the bandwidth allocated for a class belonging to a policy map.

class-map

Creates a class map to be used for matching packets to a specified class.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces.

service-policy

Attached a policy map to an interface.


mtu

To adjust the maximum packet size or maximum transmission unit (MTU) size, use the mtu command in interface configuration mode, connect configuration mode, or xconnect subinterface configuration mode. To restore the MTU value to its original default value, use the no form of this command.

mtu bytes

no mtu

Syntax Description

bytes

MTU size, in bytes.


Command Default

Table 2-3 lists default MTU values according to media type.

Table 2-3 Default Media MTU Values

Media Type
Default MTU (Bytes)

Ethernet

1500

Serial

1500

Token Ring

4464

ATM

4470

FDDI

4470

HSSI (HSA)

4470


Command Modes

Interface configuration (config-if)
Connect configuration (xconnect-conn-config)
xconnect subinterface configuration (config-if-xconn)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Each interface has a default maximum packet size or MTU size. This number generally defaults to the largest size possible for that interface type.


Note The connect configuration mode is used only for Frame Relay Layer 2 interworking.


Changing the MTU Size

Changing the MTU size is not supported on a loopback interface.

Protocol-Specific Versions of the mtu Command

Changing the MTU value with the mtu interface configuration command can affect values for the protocol-specific versions of the command (the ip mtu command, for example). If the value specified with the ip mtu interface configuration command is the same as the value specified with the mtu interface configuration command, and you change the value for the mtu interface configuration command, the ip mtu value automatically matches the new mtu interface configuration command value. However, changing the values for the ip mtu configuration commands has no effect on the value for the mtu interface configuration command.

Examples

The following example shows how to specify an MTU of 1000 bytes:

Router# configure terminal
Router(config)# vlan 20
Router(config-vlan)# name test20
Router(config-if)# mtu 1000
 
 

Related Commands

Command
Description

ip mtu

Sets the MTU size of IP packets sent on an interface.


name

To specify the name of a iSCSI target in the target profile on the GGSN, use the name command in iSCSI interface configuration mode. To remove the IP address configuration, use the no form of the command.

name target_name

no name target_name

Syntax Description

target_name

Name of the SCSI target.


Command Default

No default behavior or values.

Command Modes

iSCSI interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use the name command to specify the name of the SCSI target in an iSCSI target interface profile on the GGSN.

Examples

This example shows how to create Ethernet VLAN 20, name it test20, and add it to the VLAN database:

 
 
Router# configure terminal
Router(config)# vlan 20
Router(config-vlan)# name test20
Router(config-vlan)# end
 
 

Related Commands

Command
Description

gprs iscsi

Configures the GGSN to use the specified iSCSI profile for record storage.

ip

Specifies the IP address of the target on the SAN.

ip iscsi target-profile

Creates an iSCSI interface profile for an SCSI target (or modifies an existing one), and enters iSCSI interface configuration mode.

port

Specifies the number of the TCP port on which to listen for iSCSI traffic.


 
 

negotiation

To enable advertisement of speed, duplex mode, and flow control on a Gigabit Ethernet interface, use the negotiation command in interface configuration mode. To disable automatic negotiation, use the no negotiation auto command.

negotiation {auto}

no negotiation auto

Syntax Description

auto

Enables the autonegotiation protocol to configure the speed, duplex, and automatic flow control of the Gigabit Ethernet interface. This is the default.


Command Default

Autonegotiation is enabled.

Command Modes

Interface configuration (config-if)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The negotiation auto command is used instead of the duplex and speed commands (which are used on Ethernet to automatically configure the duplex and speed settings of the interfaces.

The no negotiation auto command is used to disable the autonegotiation. If the speed is set to 1000 Mbps and full-duplex is set for the Gigabit Ethernet interface in small form-factor pluggable (SFP) mode, then the autonegotiation is disabled (forced mode) using the no negotiation auto command.

Related Commands

Command
Description

show interfaces gigabitethernet

Displays information about the Gigabit Ethernet interfaces.


network-clock clear switch

Clears the forced switch and manual switch commands.

network-clock clear switch {t0 | external <slot/card/port> | 10m }

Syntax Description

slot/card/port

Specifies the slot/card/port.


Command Modes

Global configuration.

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

This example clears the switch command.

Router(config)#network-clock clear switch t0
 
 

network-clock eec

To configure the clocking system hardware with the desired parameters, use the network-clock eec command. Use the no form of the command to disable the clocking system hardware.

network-clock eec {1 | 2}

no network-clock eec {1 | 2}

Syntax Description

1

For option 1, the default value is EEC-Option 1 (2048).

2

For option 2, the default value is EEC-Option 2 (1544).


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

This command was introduced.


Usage Guidelines

The network-clock eec command configures the clocking system hardware with the desired parameters.

Examples

The following example configures the clocking system hardware with EEC option 1:

Router(config)# network-clock eec 1
 
 

Related Commands

Command
Description

network-clock synchronization ssm option

Configures the router to work in a synchronized network mode as described in G.781


network-clock external hold-off

To override hold-off timer value for external interface, use the network-clock external hold-off command. Use the no form of the command to disable the configuration.

network-clock external <slot/card/port> hold-off {0 | <50-10000>}

no network-clock external <slot/card/port> hold-off {0 | <50-10000>}

Syntax Description

slot/port/card

Specifies the slot, card, or port of the interface used for timing.

hold-off

Specifies the hold-off timer value.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The ASR 901 router displays a warning message for values above 1800 ms, as waiting longer causes the clock to go into the holdover mode.

Examples

This example specifies the hold-off timer value for the external interface.

Router(config)#network-clock external 3/1/1 hold-off 300
 
 

Related Commands

Command
Description

network-clock hold-off

Configures general hold-off timer in milliseconds.


network-clock hold-off global

To configure general hold-off timer in milliseconds, use the network-clock hold-off command. Use the no form of the command to remove the configuration.

network-clock hold-off {0 | <50-10000>} global

no network-clock hold-off {0 | <50-10000>} global

Syntax Description

global

Configures the hold-off timer globally.


Command Default

The default value is 300 milliseconds.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Displays a warning message for values below 300 ms and above 1800 ms.

Examples

This example configures the hold-off timer:

Router(config-if)#network-clock hold-off 75 global
 
 

Related Commands

Command
Description

network-clock synchronization ssm option

Configures the router to work in a synchronized network mode as described in G.781.


network-clock hold-off

To configure general hold-off timer in milliseconds, use the network-clock hold-off command in the interface configuration mode. Use the no form of the command to remove the configuration.

network-clock hold-off {0 | <50-10000>}

no network-clock hold-off {0 | <50-10000>}

Syntax Description

<50-10000>

Sets the hold-off timer. The default value is 300 milliseconds.


Command Default

The default value is 300 milliseconds.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Displays a warning message for values below 300 ms and above 1800 ms.

Examples

This example configures the hold-off timer:

Router(config-if)#network-clock hold-off 1000 
 
 

Related Commands

Command
Description

network-clock synchronization ssm option

Configures the router to work in a synchronized network mode as described in G.781.


network-clock input-source

To configure a clock source line interface, an external timing input interface, a GPS interface, or a packet-based timing recovered clock as the input clock for the system, use the network-clock input-source command. Use the no form of the command to disable the configuration.

network-clock input-source <priority> {interface <interface_name> <slot/port> | top <slot/port/> | {external <slot/card/port> [t1 {sf | efs | d4} | e1 [crc4| fas| cas [crc4] | 2m | 10m]}}

no network-clock input-source

Syntax Description

priority

Selection priority for the clock source (1 is the highest priority). When the higher-priority clock source fails, the next-higher-priority clock source is selected. Priority is a number between 1 and 250.

interface-name

Specifies the interface name.

slot/port

Specifies the slot/port name.

external

Refers to the external slot/card/port. This command also configures the type of signal for an external timing input interface. These signals are:

T1 with Standard Frame format or Extended Standard Frame format.

E1 with or without CRC4

2 MHz signal

Default for Europe or Option I is e1 crc4 if the signal type is not specified.

Default for North America or Option II is t1 esf if signal type is not specified.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The no version of the command reverses the command configuration, implying that the priority has changed to undefined and the state machine is informed.

Examples

This example configures the priority of the interface to 23.

Router(config)# network-clock input-source 23 interface top 0/12 
 
 

Related Commands

Command
Description

network-clock wait-to-restore

Sets the value for the wait-to-restore timer globally.


network-clock input-source controller

To add the clock recovered from the serial interfaces as one of the nominated sources, for network-clock selection, use the network-clock input-source controller command. Use the no form of the command to disable the configuration.

network-clock input-source <priority> controller [t1 | e1] <slot/port>

no network-clock input-source controller

Syntax Description

priority

Selection priority for the clock source (1 is the highest priority). When the higher-priority clock source fails, the next-higher-priority clock source is selected. Priority is a number between 1 and 250.

controller

Specifies T1 or E1 interface.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

This example configures a clock as one of the nominated sources:

Router(config)# network-clock input-source 10 controller e1 0/12
 
 

Related Commands

Command
Description

network-clock wait-to-restore

Sets the value for the wait-to-restore timer globally.


network-clock output-source system

To allow transmitting the system clock to external timing output interfaces, use the network-clock output-source system command. Use the no form of the command to disable the configuration.

network-clock output-source system <priority> {external <slot/card/port> [t1 {sf | efs | d4} | e1 [crc4| fas| cas [crc4] | 2m | 10m] }

no network-clock output-source system

Syntax Description

priority

Selection priority for the clock source (1 is the highest priority). When the higher-priority clock source fails, the next-higher-priority clock source is selected.

external

Specifies the external interface.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Allows transmitting the system clock to external timing output interfaces.

This command provides station clock output as per G.781. It is recommend that you use the interface level command instead of global commands. Global command should preferably be used for interfaces that do not have an interface sub mode.

Examples

This example sets the output-source to external interface 3/0/1:

Router(config)#network-clock output-source system 55 external 3/0/1 t1 efs
 
 

Related Commands

Command
Description

network-clock quality-level

Specifies the QL value for line or external timing input or output.


network-clock quality-level

To specify the QL value for line or external timing input or output, use the network-clock quality-level command. Use the no form of the command to remove the configuration.

network-clock quality-level {tx | rx} <value> {interface <interface name> <slot/port> | external <slot/card/port> | controller <slot/card/port>}

no network-clock quality-level

Syntax Description

interface-name

Specifies the interface.

external

Specifies an external slot/port/card.

controller

Specifies the controller slot/port/card.

value

Value is based on options specified in usage guidelines section.


Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The network-clock quality-level command specifies the QL value for line or external timing input or output. The value is based on a global interworking Option.

If Option 1 is configured, the available values are QL-PRC, QL-SSU-A, QL-SSU-B, QL-SEC, and QL-DNU.

If Option 2 is configured with GEN 2, the available values are QL-PRS, QL-STU, QL-ST2, QL-TNC, QL-ST3, QL-SMC, QL-ST4 and QL-DUS.

If option 2 is configured with GEN1, the available values are QL-PRS, QL-STU, QL-ST2, QL-SMC, QL-ST4 and QL-DUS

This command is not supported for synchronous ethernet interfaces.

Examples

This example specifies the QL value for external timing input:

Router(config-if)# network-clock quality-level rx QL-PRC external 4/0/0 e1 crc4
 
 

network-clock revertive

To configure the clock-source as revertive, use the network-clock revertive command. Use the no form of the command to remove the configuration.

network-clock revertive

no network-clock revertive

Command Default

The default value is non-revertive.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

This command was introduced.


Usage Guidelines

T he network-clock revertive command specifies whether or not the clock source is revertive. Clock sources with the same priority are always non-revertive. The default value is non-revertive.

In non-revertive switching, a switch to an alternate reference is maintained even after the original reference recovers from the failure that caused the switch. In revertive switching, the clock switches back to the original reference after that reference recovers from the failure, independent of the condition of the alternate reference.

Examples

This example shows how to make the clock-source revertive:

Router(config)#[no] network-clock revertive
 
 

Related Commands

Command
Description

network-clock input-source

Configures a clock source line interface, an external timing input interface, GPS interface, or a packet-based timing recovered clock as the input clock for the system.


network-clock wait-to-restore

Specifies the amount of time in seconds that the Cisco ASR 901 waits before considering a new clock source. Specify the network-clock wait-to-restore-timeout command in the interface configuration mode.

network-clock wait-to-restore <0-86400>

no network-clock wait-to-restore <0-86400>

Syntax Description

<0-86400>

The wait to restore time is configurable in the range of 0 to 86400 seconds. The default value is 300 seconds.


Defaults

The default setting is network-clock-select wait-to-restore 300.

Command Modes

Interface configuration mode.

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The wait to restore time is configurable in the range of 0 to 86400 seconds. The default value is 300 seconds.


Caution Ensure that you set the wait-to-restore values above 50 seconds to avoid a timing flap.

Examples

The following example shows how to use the network-clock wait-to-restore command:

Router# config t
Router(config-if)# network-clock wait-to-restore 1000 global
Router(config-if)# exit

Related Commands

Command
Description

set network-clocks force-reselect

Forces the router to re-select the network clock.


network-clock wait-to-restore global

Specifies the amount of time in seconds that the Cisco ASR 901 waits before considering a new clock source.

network-clock wait-to-restore <0-86400> global

no network-clock wait-to-restore <0-86400> global

Syntax Description

<0-86400>

The wait to restore time is configurable in the range of 0 to 86400 seconds. The default value is 300 seconds.

global

Sets the value for the wait-to-restore timer globally.


Defaults

The default setting is network-clock-select wait-to-restore 300.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The wait to restore time is configurable in the range of 0 to 86400 seconds. The default value is 300 seconds.


Caution Ensure that you set the wait-to-restore values above 50 seconds to avoid a timing flap.

Examples

The following example shows how to use the network-clock-select command:

Router# config t
Router(config)# network-clock wait-to-restore 360 global
Router(config)# exit

Related Commands

Command
Description

set network-clocks force-reselect

Forces the router to re-select the network clock.


network-clock set lockout

To lock out a clock source, use the network-clock set lockout command. Use the network-clock clear lockout form of the command to remove the lockout.

network-clock set lockout {interface interface_name slot/port | external slot/card/port}

network-clock clear lockout

Syntax Description

interface_name

Specifies the interface name.

external

specifies the external interface name.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The network-clock set lockout command locks out a clock source. A clock source flagged as lock-out is not selected for SyncE.

To clear the lock-out on a source, use network-clock clear lockout {interface interface_name slot/port | external slot/card/port} command.


Note Lockout takes precedence over force switch and force switch overrides the manual switch.


Examples

This example shows how to lockout the clock source.

Router(config)#network-clock set lockout interface GigabitEthernet 0/1
 
 
 
 

network-clock switch force

To forcefully select a synchronization source irrespective of whether the source is available and is within the range, use the network-clock switch force command. Use the network-clock clear switch command to remove the forced switch command.

network-clock switch force {interface interface_name slot/port | external slot/card/port}

Syntax Description

interface_name

Specifies the interface name.

slot/card/port

Specifies the external slot/card/port name.


Command Modes

Global configuration.

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

This example forcefully selects the synchronization source:

Router(config)#network-clock switch force interface GigabitEthernet 0/1 t1
 
 
 
 

network-clock switch manual

To manually select a synchronization source, provided the source is available and is within the range, use the network-clock switch manual command.

network-clock switch manual {interface interface_name slot/port | external slot/card/port}

Syntax Description

interface_name

Specifies the interface name.

slot/card/port

Specifies the external slot/card/port.


Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

This example manually sets the synchronization source.

Router(config)#network-clock switch manual interface GigabitEthernet 0/1 t1
 
 

network-clock synchronization automatic

To enable G.781 based automatic clock selection process, use the network-clock synchronization automatic command. Use the no form of the command to disable the G.781 based automatic clock selection process.

network-clock synchronization automatic

no network-clock synchronization automatic

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The network-clock synchronization automatic command enables the G.781 based automatic clock selection process. G.781 is the ITU-T Recommendation that specifies the synchronization layer functions.

Examples

The following example shows how to enable the G.781 based automatic clock selection process.

Router(config)# network-clock synchronization automatic
 
 

Related Commands

Command
Description

network-clock eec

Configures the clocking system hardware with the desired parameters

network-clock synchronization ssm option

Configures the router to work in a synchronized network mode as described in G.781


network-clock synchronization ssm option

To configure the router to work in a synchronized network mode as described in G.781, use the network-clock synchronization ssm option command. Use the no form of the command to remove the configuration.

network-clock synchronization ssm option {1| 2 {GEN1 | GEN2}}

no network-clock synchronization ssm option

Syntax Description

1

(Default) Refers to synchronization networks designed for Europe (E1 framings are compatible with this option)

2

Refers to synchronization networks designed for the US (T1 framings are compatible with this option).

GEN1

Specifies the first generation message.

GEN2

Specifies the second generation message.


Command Default

Option 1

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Network-clock configurations that are not common between options need to be configured again.

The default option is 1 and while choosing option 2, you need to specify the second generation message (GEN2) or first generation message (GEN1).

Examples

This example show how to configure the router to work in a synchronized network mode:

Router(config)#network-clock synchronization ssm option 2 GEN1
 
 

Related Commands

Command
Description

network-clock eec

Configures the clocking system hardware with the desired parameters


payload-size

Specifies the size of the payload for packets on a structured CEM channel.

payload-size [payload-size]

Syntax Description

payload-size

Specifies the size of the payload for packets on a structured CEM channel. Valid values are 32-512. The default payload size for a T1 is 192 bytes; the default size for an E1 is 256 bytes.

Note The payload size must be a multiple of the number of timeslots for the CEM channel.

The default payload size is calculated as follows:

8  x  number of timeslots  x  1 ms packetization delay


Defaults

The default payload size for a structured CEM channel depends on the number of timeslots that constitute the channel. The default payload size for a T1 is 192 bytes; the default size for an E1 is 256 bytes.

Command Modes

CEM circuit configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to specify a sample rate:

Router# config t
Router(config)# interface cem 0/0
Router(config-if)# no ip address
Router(config-if)# cem 0
Router(config-if-cem)# payload-size 256
Router(config-if-cem)# xconnect 10.10.10.10 200 encapsulation mpls
Router(config-if-cem-xconn)# exit
Router(config-if-cem)# exit
Router(config-if)# exit
Router(config)# exit

Related Commands

Command
Description

dejitter-buffer

Configures the size of the dejitter buffer on a CEM channel.

idle-pattern

Specifies the data pattern transmitted on the T1/E1 line when missing packets are detected on the PWE3 circuit.


police (percent)

To configure traffic policing on the basis of a percentage of bandwidth available on an interface, use the police command in policy-map class configuration mode. To remove traffic policing from the configuration, use the no form of this command.

police cir percent percentage [burst-in-msec] [bc conform-burst-in-msec ms] [be peak-burst-in-msec ms] [pir percent percentage] [conform-action action [exceed-action action [violate-action action]]]

no police cir percent percentage [burst-in-msec] [bc conform-burst-in-msec ms] [be peak-burst-in-msec ms] [pir percent percentage] [conform-action action [exceed-action action [violate-action action]]]

Syntax Description

cir

Committed information rate. Indicates that the CIR will be used for policing traffic.

percent

Specifies that a percentage of bandwidth will be used for calculating the CIR.

percentage

Specifies the bandwidth percentage. Valid range is a number from 1 to 100.

burst-in-msec

(Optional) Burst in milliseconds. Valid range is a number from 1 to 2000.

bc

(Optional) Conform burst (bc) size used by the first token bucket for policing traffic.

conform-burst-in-msec

(Optional) Specifies the bc value in milliseconds. Valid range is a number from 1 to 2000.

ms

(Optional) Indicates that the burst value is specified in milliseconds.

be

(Optional) Peak burst (be) size used by the second token bucket for policing traffic.

peak-burst-in-msec

(Optional) Specifies the be size in milliseconds. Valid range is a number from 1 to 2000.

pir

(Optional) Peak information rate. Indicates that the PIR will be used for policing traffic.

percent

(Optional) Specifies that a percentage of bandwidth will be used for calculating the PIR.

conform-action

(Optional) Action to take on packets whose rate is less than the conform burst. You must specify a value for peak-burst-in-msec before you specify the conform-action.

exceed-action

(Optional) Action to take on packets whose rate is within the conform and conform plus exceed burst.

violate-action

(Optional) Action to take on packets whose rate exceeds the conform plus exceed burst. You must specify the exceed-action before you specify the violate-action.

action

(Optional) Action to take on packets. Specify one of the following keywords:

All Supported Platforms

drop—Drops the packet.

set-clp-transmit—Sets the ATM Cell Loss Priority (CLP) bit from 0 to 1 on the ATM cell and sends the packet with the ATM CLP bit set to 1.

set-dscp-transmit new-dscpSets the IP differentiated services code point (DSCP) value and sends the packet with the new IP DSCP value setting.

set-frde-transmit—Sets the Frame Relay discard eligible (DE) bit from 0 to 1 on the Frame Relay frame and sends the packet with the DE bit set to 1.

set-prec-transmit new-prec—Sets the IP precedence and sends the packet with the new IP precedence value setting.

transmit—Sends the packet with no alteration.

policed-dscp-transmit—(Exceed and violate action only). Changes the DSCP value per the policed DSCP map and sends the packet.

set-cos-inner-transmit value—Sets the inner class of service field as a policing action for a bridged frame on the Enhanced FlexWAN module, and when using bridging features on SPAs.

set-cos-transmit value—Sets the packet cost of service (CoS) value and sends the packet.

set-mpls-exposition-transmit—Sets the Multiprotocol Label Switching (MPLS) experimental bits from 0 to 7 and sends the packet with the new MPLS experimental bit value setting.

set-mpls-topmost-transmit—Sets the MPLS experimental bits on the topmost label and sends the packet.


Command Default

All Supported Platforms

The default bc and be values are 4 ms.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command calculates the cir and pir on the basis of a percentage of the maximum amount of bandwidth available on the interface. When a policy map is attached to the interface, the equivalent cir and pir values in bits per second (bps) are calculated on the basis of the interface bandwidth and the percent value entered with this command. The show policy-map interface command can then be used to verify the bps rate calculated.

The calculated cir and pir bps rates must be in the range of 8000 and 2000000000 bps. If the rates are outside this range, the associated policy map cannot be attached to the interface. If the interface bandwidth changes (for example, more is added), the bps values of the cir and the pir are recalculated on the basis of the revised amount of bandwidth. If the cir and pir percentages are changed after the policy map is attached to the interface, the bps values of the cir and pir are recalculated.

Conform Burst and Peak Burst Sizes in Milliseconds

This command also allows you to specify the values for the conform burst size and the peak burst size in milliseconds. If you want bandwidth to be calculated as a percentage, the conform burst size and the peak burst size must be specified in milliseconds (ms).

Hierarchical Policy Maps

Policy maps can be configured in two-level (nested) hierarchies; a top (or "parent") level and a secondary (or "child") level. The police (percent) command can be configured for use in either a parent or child policy map.

Bandwidth and Hierarchical Policy Maps

The police (percent) command uses the maximum rate of bandwidth available as the reference point for calculating the bandwidth percentage. When the police (percent) command is configured in a child policy map, the police (percent) command uses the bandwidth amount specified in the next higher-level policy (in this case, the parent policy map). If the parent policy map does not specify the maximum bandwidth rate available, the police (percent) command uses the maximum bandwidth rate available on the next higher level (in this case, the physical interface, the highest point in the hierarchy) as the reference point. The police (percent) command always looks to the next higher level for the bandwidth reference point. The following sample configuration illustrates this point:

Policymap parent_policy
 class parent
  shape average 512000
  service-policy child_policy
 
 
Policymap child_policy
 class normal_type
  police cir percent 30
 
 

In this sample configuration, there are two hierarchical policies: one called parent_policy and one called child_policy. In the policy map called child_policy, the police command has been configured in the class called normal_type. In this class, the percentage specified by for the police (percent) command is 30 percent. The command will use 512 kbps, the peak rate, as the bandwidth reference point for class parent in the parent_policy. The police (percent) command will use 512 kbps as the basis for calculating the cir rate (512 kbps * 30 percent).

interface serial 4/0
 service-policy output parent_policy
 
 
Policymap parent_policy
 class parent
  bandwidth 512
  service-policy child_policy
 
 

In the above example, there is one policy map called parent_policy. In this policy map, a peak rate has not been specified. The bandwidth command has been used, but this command does not represent the maximum rate of bandwidth available. Therefore, the police (percent) command will look to the next higher level (in this case serial interface 4/0) to get the bandwidth reference point. Assuming the bandwidth of serial interface 4/0 is 1.5 Mbps, the police (percent) command will use 1.5 Mbps as the basis for calculating the cir rate (1500000 * 30 percent).

How Bandwidth Is Calculated

The police (percent) command is often used in conjunction with the bandwidth and priority commands. The bandwidth and priority commands can be used to calculate the total amount of bandwidth available on an entity (for example, a physical interface). When the bandwidth and priority commands calculate the total amount of bandwidth available on an entity, the following guidelines are invoked:

If the entity is a physical interface, the total bandwidth is the bandwidth on the physical interface.

If the entity is a shaped ATM permanent virtual circuit (PVC), the total bandwidth is calculated as follows:

For a variable bit rate (VBR) virtual circuit (VC), the sustained cell rate (SCR) is used in the calculation.

For an available bit rate (ABR) VC, the minimum cell rate (MCR) is used in the calculation.

For more information on bandwidth allocation, refer to the "Congestion Management Overview" chapter in the Cisco IOS Quality of Service Solutions Configuration Guide.

Examples

The following example shows how to configure traffic policing using a CIR and a PIR on the basis of a percentage of bandwidth. In this example, a CIR of 20 percent and a PIR of 40 percent have been specified. Additionally, an optional bc value and be value (300 ms and 400 ms, respectively) have been specified.

Router> enable
Router# configure terminal
Router(config)# policy-map policy1
Router(config-pmap)# class class1
Router(config-pmap-c)# police cir percent 20 bc 300 ms be 400 ms pir percent 40 
Router(config-pmap-c-police)# exit 
 
 

After the policy map and class maps are configured, the policy map is attached to an interface as shown in the following example:

Router> enable
Router# configure terminal
Router(config)# interface gigabitethernet0/1 
Router(config-if)# service-policy input policy1
Router(config-if)# exit

Related Commands

Command
Description

bandwidth (policy-map class)

Specifies or modifies the bandwidth allocated for a class belonging to a policy map.

bridge-domain

Enables RFC 1483 ATM bridging or RFC 1490 Frame Relay bridging to map a bridged VLAN to an ATM PVC or Frame Relay DLCI.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

priority

Gives priority to a traffic class in a policy map.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

shape (percent)

Specifies average or peak rate traffic shaping on the basis of a percentage of bandwidth available on an interface.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map interface

Displays the packet statistics of all classes that are configured for all service policies either on the specified interface or subinterface or on a specific PVC on the interface.


police (two rates)

To configure traffic policing using two rates, the committed information rate (CIR) and the peak information rate (PIR), use the police command in policy-map class configuration mode. To remove two-rate traffic policing from the configuration, use the no form of this command.

police cir cir [bc conform-burst] [pir pir] [be peak-burst] [conform-action action [exceed-action action [violate-action action]]]

no police cir

Syntax Description

cir

Committed information rate (CIR) at which the first token bucket is updated.

cir

Specifies the CIR value in bits per second. The value is a number from 8000 to 200000000.

bc

(Optional) Conform burst (bc) size used by the first token bucket for policing.

conform-burst

(Optional) Specifies the bc value in bytes. The value is a number from 1000 to 51200000.

pir

(Optional) Peak information rate (PIR) at which the second token bucket is updated.

pir

(Optional) Specifies the PIR value in bits per second. The value is a number from 8000 to 200000000.

be

(Optional) Peak burst (be) size used by the second token bucket for policing.

peak-burst

(Optional) Specifies the peak burst (be) size in bytes. The size varies according to the interface and platform in use.

conform-action

(Optional) Action to take on packets that conform to the CIR and PIR.

exceed-action

(Optional) Action to take on packets that conform to the PIR but not the CIR.

violate-action

(Optional) Action to take on packets exceed the PIR.

action

(Optional) Action to take on packets. Specify one of the following keywords:

drop—Drops the packet.

set-clp-transmit—Sets the ATM Cell Loss Priority (CLP) bit from 0 to 1 on the ATM cell and sends the packet with the ATM CLP bit set to 1.

set-dscp-transmit new-dscpSets the IP differentiated services code point (DSCP) value and sends the packet with the new IP DSCP value setting.

set-dscp-tunnel-transmit value—Sets the DSCP value (0 to 63) in the tunnel header of a Layer 2 Tunnel Protocol Version 3 (L2TPv3) or Generic Routing Encapsulation (GRE) tunneled packet for tunnel marking and transmits the packet with the new value.

set-frde-transmit—Sets the Frame Relay discard eligible (DE) bit from 0 to 1 on the Frame Relay frame and sends the packet with the DE bit set to 1.

set-mpls-exp-transmit—Sets the Multiprotocol Label Switching (MPLS) experimental bits from 0 to 7 and sends the packet with the new MPLS experimental bit value setting.

set-prec-transmit new-prec—Sets the IP precedence and sends the packet with the new IP precedence value setting.

set-prec-tunnel-transmit value—Sets the precedence value (0 to 7) in the tunnel header of an L2TPv3 or GRE tunneled packet for tunnel marking and transmits the packet with the new value.

set-qos-transmit new-qos—Sets the quality of service (QoS) group value and sends the packet with the new QoS group value setting.

transmit—Sends the packet with no alteration.


Command Default

Traffic policing using two rates is disabled.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Configuring Priority with an Explicit Policing Rate

When you configure a priority class with an explicit policing rate, traffic is limited to the policer rate regardless of congestion conditions. In other words, even if bandwidth is available, the priority traffic cannot exceed the rate specified with the explicit policer.

Token Buckets

Two-rate traffic policing uses two token buckets—Tc and Tp—for policing traffic at two independent rates. Note the following points about the two token buckets:

The Tc token bucket is updated at the CIR value each time a packet arrives at the two-rate policer. The Tc token bucket can contain up to the confirm burst (Bc) value.

The Tp token bucket is updated at the PIR value each time a packet arrives at the two-rate policer. The Tp token bucket can contain up to the peak burst (Be) value.

Updating Token Buckets

The following scenario illustrates how the token buckets are updated:

A packet of B bytes arrives at time t. The last packet arrived at time t1. The CIR and the PIR token buckets at time t are represented by Tc(t) and Tp(t), respectively. Using these values and in this scenario, the token buckets are updated as follows:

Tc(t) = min(CIR * (t-t1) + Tc(t1), Bc)

Tp(t) = min(PIR * (t-t1) + Tp(t1), Be)

Marking Traffic

The two-rate policer marks packets as either conforming, exceeding, or violating a specified rate. The following points (using a packet of B bytes) illustrate how a packet is marked:

If B > Tp(t), the packet is marked as violating the specified rate.

If B > Tc(t), the packet is marked as exceeding the specified rate, and the Tp(t) token bucket is updated as Tp(t) = Tp(t) - B.

Otherwise, the packet is marked as conforming to the specified rate, and both token buckets—Tc(t) and Tp(t)—are updated as follows:

Tp(t) = Tp(t) - B

Tc(t) = Tc(t) - B

For example, if the CIR is 100 kbps, the PIR is 200 kbps, and a data stream with a rate of 250 kbps arrives at the two-rate policer, the packet would be marked as follows:

100 kbps would be marked as conforming to the rate.

100 kbps would be marked as exceeding the rate.

50 kbps would be marked as violating the rate.

Marking Packets and Assigning Actions Flowchart

The flowchart in Figure 2-1 illustrates how the two-rate policer marks packets and assigns a corresponding action (that is, violate, exceed, or conform) to the packet.

Figure 2-1 Marking Packets and Assigning Actions with the Two-Rate Policer

Examples

Setting Priority with an Explicit Policing Rate

In the following example, priority traffic is limited to a committed rate of 1000 kbps regardless of congestion conditions in the network:

Router(config)# policy-map p1
Router(config-pmap)# class c1
Router(config-pmap-c)# police cir 1000000 conform-action transmit exceed-action drop

Two-Rate Policing

In the following example, two-rate traffic policing is configured on a class to limit traffic to an average committed rate of 500 kbps and a peak rate of 1 Mbps:

Router(config)# class-map police
Router(config-cmap)# match access-group 101
Router(config-cmap)# policy-map policy1
Router(config-pmap)# class police
Router(config-pmap-c)# police cir 500000 bc 10000 pir 1000000 be 10000 conform-action 
transmit exceed-action set-prec-transmit 2 violate-action drop
Router(config-pmap-c)# exit
Router(config-pmap)# exit
Router(config)# interface gigabitethernet0/1
Router(config-if)# service-policy output policy1
Router(config-if)# end
Router# show policy-map policy1
 
 
 Policy Map policy1
  Class police
   police cir 500000 conform-burst 10000 pir 1000000 peak-burst 10000 conform-action 
transmit exceed-action set-prec-transmit 2 violate-action drop
 
 

Traffic marked as conforming to the average committed rate (500 kbps) will be sent as is. Traffic marked as exceeding 500 kbps, but not exceeding 1 Mbps, will be marked with IP Precedence 2 and then sent. All traffic marked as exceeding 1 Mbps will be dropped. The burst parameters are set to 10000 bytes.

Related Commands

Command
Description

police

Configures traffic policing.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

service-policy

Attaches a policy map to an input interface or an output interface to be used as the service policy for that interface.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map interface

Displays the packet statistics of all classes that are configured for all service policies either on the specified interface or subinterface or on a specific PVC on the interface.


policy-map

To enter policy-map configuration mode and create or modify a policy map that can be attached to one or more interfaces to specify a service policy, use the policy-map command in global configuration mode. To delete a policy map, use the no form of this command.

policy-map [type {control | service}] policy-map-name

no policy-map [type {control | traffic}] policy-map-name

Syntax Description

type

Specifies the policy-map type.

control

(Optional) Creates a control policy map.

service

(Optional) Creates a service policy map.

policy-map-name

Name of the policy map. The name can be a maximum of 40 alphanumeric characters.


Command Default

The policy map is not configured.

Command Modes

Global configuration (config)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use the policy-map command to specify the name of the policy map to be created, added to, or modified before you configure policies for classes whose match criteria are defined in a class map. The policy-map command enters policy-map configuration mode, in which you can configure or modify the class policies for a policy map.

You can configure class policies in a policy map only if the classes have match criteria defined for them. Use the class-map and match commands to configure the match criteria for a class. Because you can configure a maximum of 64 class maps, a policy map cannot contain more than 64 class policies.

A single policy map can be attached to more than one interface concurrently. Except as noted, when you attempt to attach a policy map to an interface, the attempt is denied if the available bandwidth on the interface cannot accommodate the total bandwidth requested by class policies that make up the policy map. In this case, if the policy map is already attached to other interfaces, it is removed from them.

Whenever you modify class policy in an attached policy map, class-based weighted fair queueing (CBWFQ) is notified and the new classes are installed as part of the policy map in the CBWFQ system.


Note Policy-map installation via subscriber-profile is not supported. If you configure an unsupported policy map and there are a large number of sessions, then an equally large number of messages print on the console. For example, if there are 32,000 sessions, then 32,000 messages print on the console at 9,600 baud.


Examples

The following example creates a policy map called "in-gold-policy":

Router(config)# policy-map in-gold-policy
Router(config-pmap)# class in-class1
 
 
 
 

protocol (ATM)

To configure a static map for an ATM permanent virtual circuit (PVC), switched virtual circuit (SVC), or virtual circuit (VC) class or to enable Inverse Address Resolution Protocol (ARP) or Inverse ARP broadcasts on an ATM PVC, use the protocol command in the appropriate mode. To remove a static map or disable Inverse ARP, use the no form of this command.

protocol protocol {protocol-address [virtual-template] | inarp} [[no] broadcast | disable-check-subnet | [no] enable-check-subnet]

no protocol protocol {protocol-address [virtual-template] | inarp} [[no] broadcast disable-check-subnet | [no] enable-check-subnet]

Syntax Description

protocol

Choose one of the following values:

arp—IP ARP

bridge—bridging

cdp—Cisco Discovery Protocol

clns—ISO Connectionless Network Service (CLNS)

clns_esISO CLNS end system

clns_isISO CLNS intermediate system

cmnsISO CMNS

compressedtcpCompressed TCP

ip—IP

llc2llc2

padpacket assembler/disassembler (PAD) links

ppp—Point-to-Point Protocol carried on the VC

pppoe—PPP over Ethernet

pppovlan—PPPoE over vlan

rsrbremote source-route bridging

snapshotsnapshot routing support

protocol-address

Destination address that is being mapped to a PVC.

virtual-template

(Optional) Specifies parameters that the point-to-point protocol over ATM (PPPoA) sessions will use.

Note This keyword is valid only for the PPP protocol.

inarp

Enables Inverse ARP on an ATM PVC. If you specify a protocol address instead of inarp, Inverse ARP is automatically disabled for that protocol.

[no] broadcast

(Optional) Indicates that this map entry is used when the corresponding protocol sends broadcast packets to the interface. Pseudobroadcasting is supported. The broadcast keyword of the protocol command takes precedence if you previously configured the broadcast command on the ATM PVC or SVC.

disable-check-subnet

(Optional) Disables subnet checking for InARP.

enable-check-subnet

(Optional) Enables subnet checking for InARP.


Inverse ARP is enabled for IP if the protocol is running on the interface and no static map is configured. Subnet checking for InARP is disabled by default.

Command Modes

Interface-ATM-VC configuration (for an ATM PVC or SVC)
PVC-in-range configuration (for an individual PVC within a PVC range)
PVC range configuration (for an ATM PVC range)
VC-class configuration (for a VC class)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Command Application

Use this command to perform either of the following tasks:

Configure a static map for an ATM PVC, SVC, or VC class.

Enable Inverse ARP or Inverse ARP broadcasts on an ATM PVC or PVC range by configuring Inverse ARP directly on the PVC, in the PVC range, or in a VC class (applies to IP protocol only).

Enable the router to respond to an InARP request when the source IP address contained in the request is not in the subnet as the receiving sub-interface on which PVC is configured.

Enable the router to accept InARP reply when the peer router's IP address is not in the same subnet as the receiving sub-interface on which the PVC is configured.

Does not provide support for SVC, PVC, and SVC bundles.

PVC range and PVC-in-range configuration modes support only IP.

Examples

In the following example, the router creates a static map on a VC, indicates that 10.68.34.237 is connected to this VC, and sends ATM pseudobroadcasts:

protocol ip 10.68.34.237 broadcast
 
 

In the following example, the router removes a static map from a VC and restores the default behavior for Inverse ARP (refer to the "Defaults" section):

no protocol ip 10.68.34.237
 
 

In the following example, the VC carries PPP traffic and its associated parameters:

protocol ppp 10.68.34.237 virtual-template

pseudowire-class

To specify the name of a Layer 2 pseudowire-class and enter pseudowire-class configuration mode, use the pseudowire-class command in global configuration mode. To remove a pseudowire class configuration, use the no form of this command.

pseudowire-class pw-class-name

no pseudowire-class pw-class-name

Syntax Description

pw-class-name

The name of a Layer 2 pseudowire-class.If you want to configure more than one pseudowire class, define a class name using the pw-class-name parameter.


Defaults

No pseudowire-class is defined.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The pseudowire-class command configures a pseudowire-class template that consists of configuration settings used by all attachment circuits bound to the class. A pseudowire-class includes the following configuration settings:

Data encapsulation type

Control protocol

IP address of the local Layer 2 interface

Type of service (ToS) value in IP headers

The local interface name for each pseudowire class configured between a pair of PE routers can be the same or different.

After entering the pseudowire-class command, the router switches to pseudowire-class configuration mode where PW settings can be configured.

Examples

The following example shows how to enter pseudowire-class configuration mode to configure a PW configuration template named "ether-pw":

Router# config t
Router(config)# pseudowire-class mpls
Router(config-pw-class)# encapsulation mpls
Router(config-pw-class)# exit
Router(config)# exit

Related Commands

Command
Description

pseudowire

Binds an attachment circuit to a Layer 2 PW for an xconnect service.

xconnect

Binds an attachment circuit to an Layer 2 PW for an xconnect service and then enters xconnect configuration mode.


ptp profile telecom

To enable the PTP telecom profile on the router, use ptp profile telecom in the clock configuration mode. To disable PTP telecom profile, use the no form of the command.

ptp profile telecom

no ptp profile telecom

Syntax Description

This command has no arguments.

Command Modes

Clock configuration

Command History

Release
Modification

15.1(2)SNI

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command enables the PTP telecom profile on the router.

Examples

The following example shows how to configure a PTP clock and enter clock configuration mode:

Router# configure terminal
Router(config)# ptp clock ordinary domain 0
Router(config-ptp-clk)# ptp profile telecom

Related Commands

Command
Description

ptp clock

Creates a PTP clock instance.


ql-enabled rep segment

Specifies the REP segment used for synchronous Ethernet clock selection.

ql-enabled rep segment segment-id

no ql-enabled rep segment segment-id

Syntax Description

segment

Specifies a REP segment.

segment-id

The REP segment ID of the REP segment


Defaults

There is no default setting.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command requires that you specify a synchronous Ethernet clock source.

Examples

The following example shows how to use the ql-enabled command:

Router# config t
Router(config)# ql-enabled rep segment 5
Router(config)# exit

Related Commands

Command
Description

rep segment

Enables Resilient Ethernet Protocol (REP) on an interface assigns a segment ID.


rep block port

Use the rep block port interface configuration command on the REP primary edge port to configure Resilient Ethernet Protocol (REP) VLAN load balancing. Use the no form of this command to return to the default configuration.

rep block port {id port-id | neighbor_offset | preferred} vlan {vlan-list | all}

no rep block port {id port-id | neighbor_offset | preferred}

Syntax Description

id port-id

Identify the VLAN blocking alternate port by entering the unique port ID that is automatically generated when REP is enabled. The REP port ID is a 16-character hexadecimal value. You can view the port ID for an interface by entering the show interface interface-id rep detail command.

neighbor_offset

Identify the VLAN blocking alternate port by entering the offset number of a neighbor. The range is -256 to +256; a value of 0 is invalid. The primary edge port has an offset number of 1; positive numbers above 1 identify downstream neighbors of the primary edge port. Negative numbers identify the secondary edge port (offset number -1) and its downstream neighbors.


Note Because you enter this command at the primary edge port (offset number 1), you would never enter an offset value of 1 to identify an alternate port.


preferred

Identify the VLAN blocking alternate port as the segment port on which you entered the rep segment segment-id preferred interface configuration command.

Note Entering the preferred keyword does not ensure that the preferred port is the alternate port; it gives it preference over other similar ports.

vlan

Identify the VLANs to be blocked.

vlan-list

Enter a VLAN ID from 1 to 4094 or a range or sequence of VLANs (such as 1-3, 22, 41-44) of VLANs to be blocked.

all

Enter to block all VLANs.


Defaults

The default behavior after you enter the rep preempt segment privileged EXEC command (for manual preemption) is to block all VLANs at the primary edge port. This behavior remains until you configure the rep block port command.

If the primary edge port cannot determine which port is to be the alternate port, the default action is no preemption and no VLAN load balancing.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

You must enter this command on the REP primary edge port.

When you select an alternate port by entering an offset number, this number identifies the downstream neighbor port of an edge port. The primary edge port has an offset number of 1; positive numbers above 1 identify downstream neighbors of the primary edge port. Negative numbers identify the secondary edge port (offset number -1) and its downstream neighbors. See Neighbor Offset Numbers in a REP SegmentFigure 2-2.

Figure 2-2 Neighbor Offset Numbers in a REP Segment


Note You would never enter an offset value of 1 because that is the offset number of the primary edge port itself.


If you have configured a preempt delay time by entering the rep preempt delay seconds interface configuration command and a link failure and recovery occurs, VLAN load balancing begins after the configured preemption time period elapses without another link failure. The alternate port specified in the load-balancing configuration blocks the configured VLANs and unblocks all other segment ports. If the primary edge port cannot determine the alternate port for VLAN balancing, the default action is no preemption.

Each port in a segment has a unique port ID. The port ID format is similar to the one used by the spanning tree algorithm: a port number (unique on the bridge) associated to a MAC address (unique in the network). To determine the port ID of a port, enter the show interface interface-id rep detail privileged EXEC command.

Examples

This example shows how to configure REP VLAN load balancing on the Switch B primary edge port (Gigabit Ethernet port 0/1) and to configure Gigabit Ethernet port 0/2 of Switch A as the alternate port to block VLANs 1 to 100. The alternate port is identified by its port ID, shown in bold in the output of the show interface rep detail command for the Switch A port.

Switch A# show interface gigabitethernet0/2 rep detail
GigabitEthernet0/2 REP enabled
Segment-id: 2 (Segment)
PortID: 0080001647FB1780
Preferred flag: No
Operational Link Status: TWO_WAY
Current Key: 007F001647FB17800EEE
Port Role: Open
Blocked Vlan: <empty>
Admin-vlan: 1
Preempt Delay Timer: 35 sec
Load-balancing block port: none
Load-balancing block vlan: none
STCN Propagate to: 
PDU/TLV statistics:
LSL PDU rx: 107122, tx: 192493
 
 
Router# config t
Router (config)# interface gigabitethernet0/1
Router (config-if)# rep block port id 0080001647FB1780 vlan 1-100
Router (config-if)# exit
 
 

This example shows how to configure VLAN load balancing by using a neighbor offset number and how to verify the configuration by entering the show interfaces rep detail privileged EXEC command:

Router# config t
Router (config)# interface gigabitethernet0/2
Router (config-if)# rep block port 6 vlan 1-110
Router (config-if)# end
 
 
Router# show interface gigabitethernet0/2 rep detail
GigabitEthernet0/2 REP enabled
Segment-id: 2 (Segment)
PortID: 0080001647FB1780
Preferred flag: No
Operational Link Status: TWO_WAY
Current Key: 007F001647FB178009C3
Port Role: Open
Blocked Vlan: <empty>
Admin-vlan: 3
Preempt Delay Timer: 35 sec
Load-balancing block port: 6
Load-balancing block vlan: 1-110
STCN Propagate to: none
LSL PDU rx: 1466780, tx: 3056637
HFL PDU rx: 2, tx: 0
BPA TLV rx: 1, tx: 2119695
BPA (STCN, LSL) TLV rx: 0, tx: 0
BPA (STCN, HFL) TLV rx: 0, tx: 0
EPA-ELECTION TLV rx: 757406, tx: 757400
EPA-COMMAND TLV rx: 1, tx: 1
EPA-INFO TLV rx: 178326, tx: 178323
 
 

Related Commands

Command
Description

rep preemt delay

Configures a waiting period after a segment port failure and recovery before REP VLAN load balancing is triggered.

rep preempt segment

Manually starts REP VLAN load balancing on a segment.

show interface rep detail

Displays REP detailed configuration and status for all interfaces or the specified interface, including the administrative VLAN.


rep platform vlb segment

To configure the VLAN list which forms VLAN load balancing group use the rep platform vlb segment command. For more information on VLAN Load Balancing, see the Cisco ASR 901 Configuration Guide.

rep platform vlb segment segment-id vlan {vlan-list | all}

no rep platform vlb

Syntax Description

segment-id

ID of the REP segment. The range is from 1 to 1024.

vlan vlan-list

Enter vlan vlan-list to block a single VLAN or a range of VLANs,

all

Enter vlan all to block all VLANs. This is the default configuration.


Command Modes

Global Configuration

Command History

Release
Modification

15.1(2)SNG

This command was introduced.


Usage Guidelines

The rep platform vlb segment command should be issued on all Cisco ASR 901 routers participating in VLB for a particular segment and should have a matching VLAN list. This vlan list should also match with the rep block command issued on primary edge port.

Examples

The example shows how to configure the VLAN Load Balancing group:

Router(config)# rep platform vlb segment 1 vlan 100-200
 
 

Related Commands

Command
Description

rep block

Configures VLAN load balancing on the primary edge port, identifies the REP alternate port in one of three ways, and configures the VLANs to be blocked on the alternate port.


rep segment

Use the rep segment interface configuration command to enable Resilient Ethernet Protocol (REP) on the interface and to assign a segment ID to it. Use the no form of this command to disable REP on the interface.

rep segment segment-id [edge [no-neighbor] [primary]] [preferred]

no rep segment

Syntax Description

segment-id

Assign a segment ID to the interface. The range is from 1 to 1024.

edge

(Optional) Identify the interface as one of the two REP edge ports. Entering the edge keyword without the primary keyword configures the port as the secondary edge port. Each segment has only two edge ports.


Note You must configure two edge ports, including one primary edge port for each segment.


no-neighbor

(Optional) Enter no-neighbor to configure a port with no external REP neighbors as an edge port. The port inherits all properties of edge ports, and you can configure them the same as any edge port.

primary

(Optional) On an edge port, specify that the port is the primary edge port. A segment has only one primary edge port. If you configure two ports in a segment as the primary edge port, for example ports on different switches, the REP selects one of them to serve as the segment primary edge port. You can identify the primary edge port for a segment by entering the show rep topology privileged EXEC command.

preferred

(Optional) Specify that the port is the preferred alternate port or the preferred port for VLAN load balancing.

Note Configuring a port as preferred does not guarantee that it becomes the alternate port; it merely gives it a slight edge among equal contenders. The alternate port is usually a previously failed port.


Defaults

REP is disabled on the interface.

When REP is enabled on an interface, the default is for the port to be a regular segment port.

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

REP ports must be Layer 2 trunk ports.

A non-ES REP port can be either an IEEE 802.1Q trunk port or an ISL trunk port.

REP ports should not be configured as one of these port types:

SPAN destination port

Private VLAN port

Tunnel port

Access port

REP ports must be network node interfaces (NNIs). REP ports cannot be user-network interfaces (UNIs) or enhanced network interfaces (ENIs).

You must configure two edge ports on each REP segment, a primary edge port and a port to act as a secondary edge port. If you configure two ports in a segment as the primary edge port, for example ports on different switches, the configuration is allowed, but the REP selects one of them to serve as the segment primary edge port.

REP ports follow these rules:

There is no limit to the number of REP ports on a switch; however, only two ports on a switch can belong to the same REP segment.

If only one port on a switch is configured in a segment, the port should be an edge port.

If two ports on a switch belong to the same segment, they must be both edge ports, both regular segment ports, or one regular port and one edge no-neighbor port. An edge port and regular segment port on a switch cannot belong to the same segment.


Note Release 12.2(33)MRA does not support the no-neighbor keyword.


If two ports on a switch belong to the same segment and one is configured as an edge port and one as a regular segment port (a misconfiguration), the edge port is treated as a regular segment port.

If you configure two ports in a segment as the primary edge port, for example ports on different switches, the REP selects one of them to serve as the segment primary edge port. Enter the show rep topology privileged EXEC command on a port in the segment to verify which port is the segment primary edge port.

REP interfaces come up in a blocked state and remain in a blocked state until notified that it is safe to unblock. You need to be aware of this to avoid sudden connection losses.

You should configure REP only in networks with redundancy. Configuring REP in a network without redundancy causes loss of connectivity.

Examples

This example shows how to enable REP on a regular (nonedge) segment port:

Router (config)# interface gigabitethernet 0/1
Router (config-if)# rep segment 100 
 
 

This example shows how to enable REP on a port and to identify the port as the REP primary edge port:

Router (config)# interface gigabitethernet 0/2
Router (config-if)# rep segment 100 edge primary 
 
 

This example shows how to enable REP on a port and to identify the port as the REP secondary edge port:

Router (config)# interface gigabitethernet 0/2
Router (config-if)# rep segment 100 edge 
 
 

You can verify your settings by entering the show interfaces rep privileged EXEC command. To verify which port in the segment is the primary edge port, enter the show rep topology privileged EXEC command.

Related Commands

Command
Description

show interfaces rep [detail]

Displays REP configuration and status for all interfaces or the specified interface.

show rep topology [detail]

Displays information about all ports in the segment, including which one was configured and selected as the primary edge port.


router isis

To enable the Intermediate System-to-Intermediate System (IS-IS) routing protocol and to specify an IS-IS process, use the router isis command in global configuration mode. To disable IS-IS routing, use the no form of this command.

router isis area-tag

no router isis area-tag

Syntax Description

area-tag

Meaningful name for a routing process. If it is not specified, a null tag is assumed and the process is referenced with a null tag. This name must be unique among all IP or Connectionless Network Service (CLNS) router processes for a given router.

Required for multiarea IS-IS configuration. Optional for conventional IS-IS configuration.


Defaults

This command is disabled by default.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command is used to enable routing for an area. An appropriate network entity title (NET) must be configured to specify the area address of the area and system ID of the router. Routing must be enabled on one or more interfaces before adjacencies may be established and dynamic routing is possible.

If you have IS-IS running and at least one International Standards Organization Interior Gateway Routing Protocol (ISO-IGRP) process, the IS-IS process and the ISO-IGRP process cannot both be configured without an area tag. The null tag can be used by only one process. If you run ISO-IGRP and IS-IS, a null tag can be used for IS-IS, but not for ISO-IGRP at the same time. However, each area in an IS-IS multiarea configuration should have a nonnull area tag to facilitate identification of the area.

You can configure only one IS-IS routing process to perform Level 2 (interarea) routing. You can configure this process to perform Level 1 (intra-area) routing at the same time. You can configure up to 29 additional processes as Level 1-only processes. If Level 2 routing is configured on any process, all additional processes are automatically configured as Level 1.

An interface cannot be part of more than one area, except in the case where the associated routing process is performing both Level 1 and Level 2 routing. On media such as WAN media where subinterfaces are supported, different subinterfaces could be configured for different areas.

If Level 2 routing is not desired for a given area, use the is-type command to remove Level 2. Level 2 routing can then be enabled on some other router instance.

Explicit redistribution between IS-IS instances is prohibited (prevented by the parser). In other words, you cannot issue a redistribute isis area-tag command in the context of another IS-IS router instance (router isis area-tag). Redistribution from any other routing protocol into a particular area is possible, and is configured per router instance, as in Cisco IOS software Release 12.0, using the redistribute and route map commands. By default, redistribution is into Level 2.

If multiple Level 1 areas are defined, the Target Address Resolution Protocol (TARP) behaves in the following way:

The locally assigned target identifier gets the network service access point (NSAP) of the Level 2 area, if present.

If only Level 1 areas are configured, the router uses the NSAP of the first active Level 1 area as shown in the configuration at the time of TARP configuration ("tarp run"). (Level 1 areas are sorted alphanumerically by tag name, with capital letters coming before lowercase letters. For example, AREA-1 precedes AREA-2, which precedes area-1.) Note that the target identifier NSAP could change following a reload if a new Level 1 area is added to the configuration after TARP is running.

The router continues to process all Type 1 and 2 protocol data units (PDUs) that are for this router. Type 1 PDUs are processed locally if the specified target identifier is in the local target identifier cache. If not, they are "propagated" (routed) to all interfaces in the same Level 1 area. (The same area is defined as the area configured on the input interface.)

Type 2 PDUs are processed locally if the specified target identifier is in the local target identifier cache. If not, they are propagated via all interfaces (all Level 1 or Level 2 areas) with TARP enabled. If the source of the PDU is from a different area, the information is also added to the local target identifier cache. Type 2 PDUs are propagated via all static adjacencies.

Type 4 PDUs (for changes originated locally) are propagated to all Level 1 and Level 2 areas (because internally they are treated as "Level 1-2").

Type 3 and 5 PDUs continue to be routed.

Type 1 PDUs are propagated only via Level 1 static adjacencies if the static NSAP is in one of the Level 1 areas in this router.

After you enter the router isis command, you can enter the maximum number of paths. There can be from 1 to 32 paths.

Examples

The following example starts IS-IS routing with the optional area-tag argument, where CISCO is the value for the area-tag argument:

router isis CISCO
 
 

The following example specifies IS-IS as an IP routing protocol for a process named Finance, and specifies that the Finance process will be routed on Ethernet interface 0 and serial interface 0:

router isis Finance
 net 49.0001.aaaa.aaaa.aaaa.00
interface Ethernet 0
 ip router isis Finance
interface serial 0
 ip router isis Finance
 
 

The following example shows usage of the maximum-paths option:

router isis
maximum-paths?
20

Related Commands

Command
Description

clns router isis

Enables IS-IS routing for ISO CLNS on an interface and attaches an area designator to the routing process.

ip router isis

Configures an IS-IS routing process for IP on an interface and attaches an area designator to the routing process.

net

Configures an IS-IS NET for the routing process.

redistribute (IP)

Redistribute routes from one routing domain into another routing domain.

route-map (IP)

Defines the conditions for redistributing routes from one routing protocol into another.


service instance

To configure an Ethernet service instance, use the service instance command in Layer 2 VPN configuration mode. To disable this configuration, use the no form of this command.

service instance id service-type

no service instance id service-type

Syntax Description

id

Service instance ID. Integer from 1 to 4294967295.

service-type

Service type for the instance.


Command Default

None

Command Modes

Layer 2 VPN configuration (config-l2vpn)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

You must provision a Multiprotocol Label Switching (MPLS) pseudowire before configuring an Ethernet service instance in Layer 2 VPN configuration mode.

Examples

The following example shows how to configure an Ethernet service instance on a Cisco uBR10012 router:

Router(config-l2vpn) # service instance 4095 ethernet
 
 

service-policy (policy-map class)

To use a service policy as a QoS policy within a policy map (called a hierarchical service policy), use the service-policy command in policy-map class configuration mode. To disable a particular service policy as a QoS policy within a policy map, use the no form of this command.

service-policy policy-map-name

no service-policy policy-map-name

Syntax Description

policy-map-name

Specifies the name of the predefined policy map to be used as a QoS policy. The name can be a maximum of 40 alphanumeric characters.


Command Default

No service policies are used.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command is used to create hierarchical service policies in policy-map class configuration mode.

This command is different from the service-policy [input | output] policy-map-name command used in interface configuration mode. The purpose of the service-policy [input | output] policy-map-name is to attach service policies to interfaces.

The child policy is the previously defined service policy that is being associated with the new service policy through the use of the service-policy command. The new service policy using the preexisting service policy is the parent policy.

This command has the following restrictions:

The set command is not supported on the child policy.

The priority command can be used in either the parent or the child policy, but not both policies simultaneously.

The shape command can be used in either the parent or the child policy, but not both polices simultaneously on a subinterface.

The fair-queue command cannot be defined in the parent policy.

If the bandwidth command is used in the child policy, the bandwidth command must also be used in the parent policy. The one exception is for policies using the default class.

Examples

The following example creates a hierarchical service policy in the service policy called parent:

Router(config)# policy-map child
Router(config-pmap)# class voice
Router(config-pmap-c)# priority 500
Router(config-pmap-c)# exit
Router(config-pmap)# exit
Router(config)# policy-map parent
Router(config-pmap)# class class-default
Router(config-pmap-c)# shape average 10000000
Router(config-pmap-c)# service-policy child
 
 

Related Commands

Command
Description

bandwidth (policy-map class)

Specifies or modifies the bandwidth allocated for a class belonging to a policy map.

fair-queue

Specifies the number of queues to be reserved for use by a traffic class.

policy-map

Specifies the name of the service policy to configure.

priority

Gives priority to a class of traffic belonging to a policy map.

service-policy

Specifies the name of the service policy to be attached to the interface.

shape

Specifies average or peak rate traffic shaping.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map interface

Displays the configuration of all classes configured for all service policies on the specified interface or displays the classes for the service policy for a specific PVC on the interface.


set cos

To set the Layer 2 class of service (CoS) value of an outgoing packet, use the set cos command in policy-map class configuration mode. To remove a specific CoS value setting, use the no form of this command.

set cos {cos-value}

no set cos {cos-value}

Syntax Description

cos-value

Specific IEEE 802.1Q CoS value from 0 to 7.


Command Default

No CoS value is set for the outgoing packet.

Command Modes

Policy-map class configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

CoS packet marking is supported only in the Cisco Express Forwarding switching path.

The set cos command should be used by a router if a user wants to mark a packet that is being sent to a switch. Switches can leverage Layer 2 header information, including a CoS value marking.

The set cos command can be used only in service policies that are attached in the output direction of an interface. Packets entering an interface cannot be set with a CoS value.

The match cos and set cos commands can be used together to allow routers and switches to interoperate and provide quality of service (QoS) based on the CoS markings.

Layer 2 to Layer 3 mapping can be configured by matching on the CoS value because switches already can match and set CoS values. If a packet that needs to be marked to differentiate user-defined QoS services is leaving a router and entering a switch, the router should set the CoS value of the packet because the switch can process the Layer 2 header.

Using This Command with the Enhanced Packet Marking Feature

You can use this command as part of the Enhanced Packet Marking feature to specify the "from-field" packet-marking category to be used for mapping and setting the CoS value. The "from-field" packet-marking categories are as follows:

Precedence

Differentiated services code point (DSCP)

If you specify a "from-field" category but do not specify the table keyword and the applicable table-map-name argument, the default action will be to copy the value associated with the "from-field" category as the CoS value. For instance, if you configure the set cos precedence command, the precedence value will be copied and used as the CoS value.

You can do the same for the DSCP marking category. That is, you can configure the set cos dscp command, and the DSCP value will be copied and used as the CoS value.


Note If you configure the set cos dscp command, only the first three bits (the class selector bits) of the DSCP field are used.


Examples

In the following example, the policy map called "cos-set" is created to assign different CoS values for different types of traffic. This example assumes that the class maps called "voice" and "video-data" have already been created.

Router(config)# policy-map cos-set 
Router(config-pmap)# class voice 
Router(config-pmap-c)# set cos 1 
Router(config-pmap-c)# exit 
Router(config-pmap)# class video-data 
Router(config-pmap-c)# set cos 2 
Router(config-pmap-c)# end

Enhanced Packet Marking Example

In the following example, the policy map called "policy-cos" is created to use the values defined in a table map called "table-map1". The table map called "table-map1" was created earlier with the table-map (value mapping) command. For more information about the table-map (value mapping) command, see the table-map (value mapping) command page.

In this example, the setting of the CoS value is based on the precedence value defined in "table-map1":

Router(config)# policy-map policy-cos 
Router(config-pmap)# class class-default 
Router(config-pmap-c)# set cos precedence table table-map1
Router(config-pmap-c)# end

Related Commands

Command
Description

match cos

Matches a packet on the basis of Layer 2 CoS marking.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

set dscp

Marks a packet by setting the Layer 3 DSCP value in the ToS byte.

set precedence

Sets the precedence value in the packet header.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map class

Displays the configuration for the specified class of the specified policy map.

show policy-map interface

Displays the configuration of all classes configured for all service policies on the specified interface or displays the classes for the service policy for a specific PVC on the interface.


set dscp

To mark a packet by setting the differentiated services code point (DSCP) value in the type of service (ToS) byte, use the set dscp command in policy-map class configuration mode. To remove a previously set DSCP value, use the no form of this command.

set [ip] dscp {dscp-value}

no set [ip] dscp {dscp-value}

Syntax Description

ip

(Optional) Specifies that the match is for IPv4 packets only. If not used, the match is on both IPv4 and IPv6 packets.

dscp-value

A number from 0 to 63 that sets the DSCP value. The following reserved keywords can be specified instead of numeric values:

EF (expedited forwarding)

AF11 (assured forwarding class AF11)

AF12 (assured forwarding class AF12)


Command Default

Disabled

Command Modes

Policy-map class configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Once the DSCP bit is set, other quality of service (QoS) features can then operate on the bit settings.

DSCP and Precedence Values Are Mutually Exclusive

The set dscp command cannot be used with the set precedence command to mark the same packet. The two values, DSCP and precedence, are mutually exclusive. A packet can have one value or the other, but not both.

Precedence Value and Queueing

The network gives priority (or some type of expedited handling) to marked traffic. Typically, you set the precedence value at the edge of the network (or administrative domain); data then is queued according to the precedence. Weighted fair queueing (WFQ) can speed up handling for high-precedence traffic at congestion points. Weighted Random Early Detection (WRED) ensures that high-precedence traffic has lower loss rates than other traffic during times of congestion.

Use of the "from-field" Packet-marking Category

If you are using this command as part of the Enhanced Packet Marking feature, you can use this command to specify the "from-field" packet-marking category to be used for mapping and setting the DSCP value. The "from-field" packet-marking categories are as follows:

Class of service (CoS)

QoS group

If you specify a "from-field" category but do not specify the table keyword and the applicable table-map-name argument, the default action will be to copy the value associated with the "from-field" category as the DSCP value. For instance, if you configure the set dscp cos command, the CoS value will be copied and used as the DSCP value.


Note The CoS field is a three-bit field, and the DSCP field is a six-bit field. If you configure the set dscp cos command, only the three bits of the CoS field will be used.


If you configure the set dscp qos-group command, the QoS group value will be copied and used as the DSCP value.

The valid value range for the DSCP is a number from 0 to 63. The valid value range for the QoS group is a number from 0 to 99. Therefore, when configuring the set dscp qos-group command, note the following points:

If a QoS group value falls within both value ranges (for example, 44), the packet-marking value will be copied and the packets will be marked.

If QoS group value exceeds the DSCP range (for example, 77), the packet-marking value will not be copied and the packet will not be marked. No action is taken.

Set DSCP Values in IPv6 Environments

When this command is used in IPv6 environments, the default match occurs on both IP and IPv6 packets. However, the actual packets set by this function are only those which meet the match criteria of the class-map containing this function.

Set DSCP Values for IPv6 Packets Only

To set DSCP values for IPv6 values only, the match protocol ipv6 command must also be used. Without that command, the precedence match defaults to match both IPv4 and IPv6 packets.

Set DSCP Values for IPv4 Packets Only

To set DSCP values for IPv4 packets only, use the ip keyword. Without the ip keyword, the match occurs on both IPv4 and IPv6 packets.

Examples

Packet-marking Values and Table Map

In the following example, the policy map called "policy1" is created to use the packet-marking values defined in a table map called "table-map1". The table map was created earlier with the table-map (value mapping) command. For more information about the table-map (value mapping) command, see the table-map (value mapping) command page.

In this example, the DSCP value will be set according to the CoS value defined in the table map called "table-map1".

Router(config)# policy-map policy1 
Router(config-pmap)# class class-default 
Router(config-pmap-c)# set dscp cos table table-map1
Router(config-pmap-c)# end
 
 

The set dscp command is applied when you create a service policy in QoS policy-map configuration mode. This service policy is not yet attached to an interface. For information on attaching a service policy to an interface, refer to the "Modular Quality of Service Command-Line Interface" section of the Cisco IOS Quality of Service Solutions Configuration Guide.

Related Commands

Command
Description

match protocol

Configures the match criteria for a class map on the basis of the specified protocol.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

set cos

Sets the Layer 2 CoS value of an outgoing packet.

set precedence

Sets the precedence value in the packet header.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map class

Displays the configuration for the specified class of the specified policy map.

show policy-map interface

Displays the configuration of all classes configured for all service policies on the specified interface or displays the classes for the service policy for a specific PVC on the interface.

show table-map

Displays the configuration of a specified table map or all table maps.

table-map (value mapping)

Creates and configures a mapping table for mapping and converting one packet-marking value to another.


set ip dscp

The set ip dscp command is replaced by the set dscp command. See the set dscp command for more information.

set ip precedence (policy-map)

The set ip precedence (policy-map) command is replaced by the set precedence command. See the set precedence command for more information.

set ip precedence (route-map)

To set the precedence value (and an optional IP number or IP name) in the IP header, use the set ip precedence command in route-map configuration mode. To leave the precedence value unchanged, use the no form of this command.

set ip precedence [number | name]

no set ip precedence

Syntax Description

number | name

(Optional) A number or name that sets the precedence bits in the IP header. The values for the number argument and the corresponding name argument are listed in Table 2-4 from least to most important.


Command Default

Disabled

Command Modes

Route-map configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Table 2-4 lists the values for the number argument and the corresponding name argument for precedence values in the IP header. They are listed from least to most important.

Table 2-4 Number and Name Values for IP Precedence

Number
Name

0

routine

1

priority

2

immediate

3

flash

4

flash-override

5

critical

6

internet

7

network


You can set the precedence using either a number or the corresponding name. Once the IP Precedence bits are set, other QoS services such as weighted fair queueing (WFQ) and Weighted Random Early Detection (WRED) then operate on the bit settings.

The network gives priority (or some type of expedited handling) to marked traffic through the application of WFQ or WRED at points downstream in the network. Typically, you set IP Precedence at the edge of the network (or administrative domain); data then is queued based on the precedence. WFQ can speed up handling for certain precedence traffic at congestion points. WRED can ensure that certain precedence traffic has lower loss rates than other traffic during times of congestion.

The mapping from arguments such as routine and priority to a precedence value is useful only in some instances. That is, the use of the precedence bit is evolving. You can define the meaning of a precedence value by enabling other features that use the value. In the case of the high-end Internet QoS available from Cisco, IP Precedences can be used to establish classes of service that do not necessarily correspond numerically to better or worse handling in the network.

Use the route-map (IP) global configuration command with the match and set route-map configuration commands to define the conditions for redistributing routes from one routing protocol into another, or for policy routing. Each route-map command has an associated list of match and set commands. The match commands specify the match criteria—the conditions under which redistribution or policy routing is allowed for the current route-map command. The set commands specify the set actions—the particular redistribution or policy routing actions to perform if the criteria enforced by the match commands are met. The no route-map command deletes the route map.

The set route-map configuration commands specify the redistribution set actions to be performed when all of the match criteria of a route map are met.

Examples

The following example sets the IP Precedence to 5 (critical) for packets that pass the route map match:

interface gigabitethernet0/1
 ip policy route-map texas
 
 
route-map texas
match length 68 128
set ip precedence 5

Related Commands

Command
Description

random-detect dscp

Changes the minimum and maximum packet thresholds for the DSCP value.


set ip precedence tunnel

To set the precedence value in the header of a Layer 2 Tunnel Protocol Version 3 (L2TPv3) or Generic Routing Encapsulation (GRE) tunneled packet for tunnel marking, use the set ip precedence tunnel command in policy-map class configuration mode. To disable this functionality, use the no form of this command.

set ip precedence tunnel precedence-value

no set ip precedence tunnel precedence-value

Syntax Description

precedence-value

Number from 0 to 7 that identifies the precedence value of the tunnel header.


Command Default

The precedence value is not set.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

It is possible to configure L2TPv3 (or GRE) tunnel marking and the ip tos command at the same time. However, Modular Quality of Service (QoS) Command-Line Interface (CLI) (MQC) (L2TPv3 or GRE) tunnel marking has higher priority over ip tos commands, meaning that tunnel marking always rewrites the IP header of the tunnel packet and overwrites the values set by ip tos commands. The order of enforcement is as follows when these commands are used simultaneously:

1. set ip dscp tunnel or set ip precedence tunnel (L2TPv3 or GRE tunnel marking)

2. ip tos reflect

3. ip tos tos-value

This is the designed behavior. We recommend that you configure only L2TPv3 (or GRE) tunnel marking and reconfigure any peers configured with the ip tos command to use L2TPv3 (or GRE) tunnel marking.


Note For Cisco IOS Release 12.4(15)T2, marking GRE-tunneled packets is supported only on platforms equipped with a Cisco RPM-XF.


Examples

The following example shows the set ip precedence tunnel command used in a tunnel marking configuration. In this example, a class map called "MATCH_FRDE" has been configured to match traffic on the basis of the Frame Relay discard eligible (DE) bit setting. Also, a policy map called "policy1" has been created within which the set ip precedence tunnel command has been configured.

Router> enable
Router# configure terminal
Router(config)# class-map MATCH_FRDE 
Router(config-cmap)# match fr-de
Router(config-cmap)# exit

Router(config)# policy-map policy1

Router(config-pmap)# class tunnel

Router(config-pmap-c)# set ip precedence tunnel 7
Router(config-pmap-c)# end

Related Commands

Command
Description

ip tos

Specifies the ToS level for IP traffic in the TN3270 server.

set ip dscp tunnel

Sets the DSCP value in the header of an L2TPv3 tunneled packet.


set ip tos (route-map)

To set the type of service (ToS) bits in the header of an IP packet, use the set ip tos command in route-map configuration mode. To leave the ToS bits unchanged, use the no form of this command.

set ip tos [tos-bit-value | max-reliability | max-throughput | min-delay | min-monetary-cost | normal]

no set ip tos

Syntax Description

tos-bit-value

(Optional) A value (number) from 0 to 15 that sets the ToS bits in the IP header. See Table 2-5 for more information.

max-reliability

(Optional) Sets the maximum reliability ToS bits to 2.

max-throughput

(Optional) Sets the maximum throughput ToS bits to 4.

min-delay

(Optional) Sets the minimum delay ToS bits to 8.

min-monetary-cost

(Optional) Sets the minimum monetary cost ToS bits to 1.

normal

(Optional) Sets the normal ToS bits to 0.


Command Default

Disabled

Command Modes

Route-map configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command allows you to set four bits in the ToS byte header. Table 2-5 shows the format of the four bits in binary form.

Table 2-5 ToS Bits and Description 

T3
T2
T1
T0
Description

0

0

0

0

0 normal forwarding

0

0

0

1

1 minimum monetary cost

0

0

1

0

2 maximum reliability

0

1

0

0

4 maximum throughput

1

0

0

0

8 minimum delay


The T3 bit sets the delay. Setting T3 to 0 equals normal delay, and setting it to 1 equals low delay.

The T2 bit sets the throughput. Setting this bit to 0 equals normal throughput, and setting it to 1 equals maximum throughput. Similarly, the T1 and T0 bits set reliability and cost, respectively. Therefore, as an example, if you want to set a packet with the following requirements:

minimum delay T3 = 1

normal throughput T2 = 0

normal reliability T1 = 0

minimum monetary cost T0 = 1

You would set the ToS to 9, which is 1001 in binary format.

Use the route-map (IP) global configuration command with the match and set (route-map) configuration commands to define the conditions for redistributing routes from one routing protocol into another, or for policy routing. Each route-map command has an associated list of match and set commands. The match commands specify the match criteria—the conditions under which redistribution or policy routing is allowed for the current route-map command. The set commands specify the set actions—the particular redistribution or policy routing actions to perform if the criteria enforced by the match commands are met. The no route-map command deletes the route map.

The set (route-map) commands specify the redistribution set actions to be performed when all of the match criteria of a route map are met.

Examples

The following example sets the IP ToS bits to 8 (minimum delay as shown in Table 2-5) for packets that pass the route-map match:

Router(config)# interface gigabitethernet0/1
Router(config-if)# ip policy route-map texas 
!
Router(config-if)# route-map texas 
Router(config-route-map)# match length 68 128 
Router(config-route-map)# set ip tos 8 
! 

Related Commands

Command
Description

ip policy route-map

Identifies a route map to use for policy routing on an interface.

route-map (IP)

Defines the conditions for redistributing routes from one routing protocol into another, or enables policy routing.


set network-clocks

This command causes the router to reselect a network clock; the router selects a new clock based on clock priority.

set network-clocks [force-reselect | next-select]

Syntax Description

force-reselect

Forces the router to select a new network clock.

next-select

Forces the router to select the next available network clock.


Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to use the set network-clocks force-reselect command:

Router# set network-clocks force-reselect

Related Commands

Command
Description

show network-clocks

Displays information about all clocks configured on the router.


set precedence

To set the precedence value in the packet header, use the set precedence command in policy-map class configuration mode. To remove the precedence value, use the no form of this command.

set precedence {precedence-value}

no set precedence {precedence-value}

Syntax Description

precedence-value

A number from 0 to 7 that sets the precedence bit in the packet header.


Command Default

Disabled

Command Modes

Policy-map class configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Command Compatibility

If a router is loaded with an image from this version (that is, Cisco IOS Release 12.2(13)T) that contained an old configuration, the set ip precedence command is still recognized. However, the set precedence command will be used in place of the set ip precedence command.

The set precedence command cannot be used with the set dscp command to mark the same packet. The two values, DSCP and precedence, are mutually exclusive. A packet can be one value or the other, but not both.

Bit Settings

Once the precedence bits are set, other quality of service (QoS) features such as weighted fair queueing (WFQ) and Weighted Random Early Detection (WRED) then operate on the bit settings.

Precedence Value

The network gives priority (or some type of expedited handling) to marked traffic through the application of WFQ or WRED at points downstream in the network. Typically, you set the precedence value at the edge of the network (or administrative domain); data then is queued according to the specified precedence. WFQ can speed up handling for certain precedence traffic at congestion points. WRED can ensure that certain precedence traffic has lower loss rates than other traffic during times of congestion.

The set precedence command cannot be used with the set dscp command to mark the same packet. The two values, differentiated services code point (DSCP) and precedence, are mutually exclusive. A packet can have one value or the other, but not both.

Using This Command with the Enhanced Packet Marking Feature

If you are using this command as part of the Enhanced Packet Marking feature, you can use this command to specify the "from-field" packet-marking category to be used for mapping and setting the precedence value. The "from-field" packet-marking categories are as follows:

CoS

QoS group

If you specify a "from-field" category but do not specify the table keyword and the applicable table-map-name argument, the default action will be to copy the value associated with the "from-field" category as the precedence value. For instance, if you configure the set precedence cos command, the CoS value will be copied and used as the precedence value.

You can do the same for the QoS group-marking category. That is, you can configure the set precedence qos-group command, and the QoS group value will be copied and used as the precedence value.

The valid value range for the precedence value is a number from 0 to 7. The valid value range for the QoS group is a number from 0 to 99. Therefore, when configuring the set precedence qos-group command, note the following points:

If a QoS group value falls within both value ranges (for example, 6), the packet-marking value will be copied and the packets will be marked.

If QoS group value exceeds the precedence range (for example, 10), the packet-marking value will not be copied, and the packet will not be marked. No action is taken.

Setting Precedence Values for IPv4 Packets Only

To set the precedence values for IPv4 packets only, use a command involving the ip keyword like the match ip precedence or match ip dscp command or include the match protocol ip command along with the others in the class map. Without the additional ip keyword, the class-map may match both IPv6 and IPv4 packets (depending on the other match criteria) and the set precedence or set dscp command may act upon both types of packets.

Examples

The following example shows how to use the set precedence command.

Router(config)# policy-map policy-cos 
Router(config-pmap)# class class-default 
Router(config-pmap-c)# set precedence 4
Router(config-pmap-c)# end
 
 

The set precedence command is applied when you create a service policy in QoS policy-map configuration mode. This service policy is not yet attached to an interface or to an ATM virtual circuit. For information on attaching a service policy to an interface, refer to the "Modular Quality of Service Command-Line Interface Overview" chapter of the Cisco IOS Quality of Service Solutions Configuration Guide.

Related Commands

Command
Description

match dscp

Identifies a specific IP DSCP value as a match criterion.

match precedence

Identifies IP precedence values as match criteria.

match protocol

Configures the match criteria for a class map on the basis of the specified protocol.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

set cos

Sets the Layer 2 CoS value of an outgoing packet.

set dscp

Marks a packet by setting the Layer 3 DSCP value in the ToS byte.

set qos-group

Sets a group ID that can be used later to classify packets.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map interface

Displays the configuration for all classes configured for all service policies on the specified interface or displays the classes for the service policy for a specific PVC on the interface.

show table-map

Displays the configuration of a specified table map or all table maps.

table-map (value mapping)

Creates and configures a mapping table for mapping and converting one packet-marking value to another.


shape (percent)

To specify average or peak rate traffic shaping on the basis of a percentage of bandwidth available on an interface, use the shape command in policy-map class configuration mode. To remove traffic shaping, use the no form of this command.

shape {average} percent percentage [sustained-burst-in-msec ms] [be excess-burst-in-msec ms] [bc committed-burst-in-msec ms]

no shape {average} percent percentage [sustained-burst-in-msec ms] [be excess-burst-in-msec ms] [bc committed-burst-in-msec ms]

Syntax Description

average

Specifies average rate traffic shaping.

percent

Specifies that a percent of bandwidth will be used for either the average rate traffic shaping or peak rate traffic shaping.

percentage

Specifies the bandwidth percentage. Valid range is a number from 1 to 100.

sustained-burst-in-msec

(Optional) Sustained burst size used by the first token bucket for policing traffic. Valid range is a number from 4 to 200.

ms

(Optional) Indicates that the burst value is specified in milliseconds (ms).

be

(Optional) Excess burst (be) size used by the second token bucket for policing traffic.

excess-burst-in-msec

(Optional) Specifies the be size in milliseconds. Valid range is a number from 0 to 200.

bc

(Optional) Committed burst (bc) size used by the first token bucket for policing traffic.

committed-burst-in-msec

(Optional) Specifies the bc value in milliseconds. Valid range is a number from 1 to 2000.


Command Default

The default bc and be is 4 ms.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Committed Information Rate

This command calculates the committed information rate (CIR) on the basis of a percentage of the available bandwidth on the interface. Once a policy map is attached to the interface, the equivalent CIR value in bits per second (bps) is calculated on the basis of the interface bandwidth and the percent value entered with this command. The show policy-map interface command can then be used to verify the CIR bps value calculated.

The calculated CIR bps rate must be in the range of 8000 and 154,400,000 bps. If the rate is less than 8000 bps, the associated policy map cannot be attached to the interface. If the interface bandwidth changes (for example, more is added), the CIR bps values are recalculated on the basis of the revised amount of bandwidth. If the CIR percentage is changed after the policy map is attached to the interface, the bps value of the CIR is recalculated.

Conform Burst and Peak Burst Sizes in Milliseconds

This command also allows you to specify the values for the conform burst size and the peak burst size in milliseconds. If you want bandwidth to be calculated as a percentage, the conform burst size and the peak burst size must be specified in milliseconds (ms).

The traffic shape converge rate depends on the traffic pattern and the time slice (Tc) parameter, which is directly affected by the bc that you configured. The Tc and the average rate configured are used to calculate bits per interval sustained. Therefore, to ensure that the shape rate is enforced, use a bc that results in a Tc greater than 10 ms.

How Bandwidth Is Calculated

The shape (percent) command is often used in conjunction with the bandwidth and priority commands. The bandwidth and priority commands can be used to calculate the total amount of bandwidth available on an entity (for example, a physical interface). When the bandwidth and priority commands calculate the total amount of bandwidth available on an entity, the following guidelines are invoked:

If the entity is a physical interface, the total bandwidth is the bandwidth on the physical interface.

If the entity is a shaped ATM permanent virtual circuit (PVC), the total bandwidth is calculated as follows:

For a variable bit rate (VBR) virtual circuit (VC), the sustained cell rate (SCR) is used in the calculation.

For an available bit rate (ABR) VC, the minimum cell rate (MCR) is used in the calculation.

For more information on bandwidth allocation, see the "Congestion Management Overview" chapter in the Cisco IOS Quality of Service Solutions Configuration Guide.

Examples

The following example configures traffic shaping using an average shaping rate on the basis of a percentage of bandwidth. In this example, 25 percent of the bandwidth has been specified. Additionally, an optional be value and bc value (100 ms and 400 ms, respectively) have been specified.

Router> enable
Router# configure terminal
Router(config)# policy-map policy1
Router(config-pmap)# class-map class1

Router(config-pmap-c)# shape average percent 25 20 ms be 100 ms bc 400 ms

Router(config-pmap-c)# end 
 
 

After the policy map and class maps are configured, the policy map is attached to interface as shown in the following example.

Router> enable
Router# configure terminal
Router(config)# interface gigabitethernet0/1
Router(config-if)# service-policy input policy1
Router(config-if)# end

Related Commands

Command
Description

bandwidth

Specifies or modifies the bandwidth allocated for a class belonging to a policy map.

class (policy-map)

Specifies the name of the class whose policy you want to create or change and the default class (commonly known as the class-default class) before you configure its policy.

police (percent)

Configures traffic policing on the basis of a percentage of bandwidth available on an interface.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

priority

Gives priority to a class of traffic belonging to a policy map.

service-policy

Attaches a policy map to an input interface or VC, or an output interface or VC, to be used as the service policy for that interface or VC.

shape max-buffers

Specifies the maximum number of buffers allowed on shaping queues.

show policy-map interface

Displays the statistics and the configurations of the input and output policies that are attached to an interface.


shape (policy-map class)

To shape traffic to the indicated bit rate according to the algorithm specified, or to enable ATM overhead accounting, use the shape command in policy-map class configuration mode. To remove shaping and leave the traffic unshaped, use the no form of this command.

shape [average | peak] mean-rate [burst-size] [excess-burst-size]

no shape [average | peak]

Syntax Description

average

(Optional) Committed Burst (Bc) is the maximum number of bits sent out in each interval.

peak

(Optional) Bc + Excess Burst (Be) is the maximum number of bits sent out in each interval.

mean-rate

(Optional) Also called committed information rate (CIR). Indicates the bit rate used to shape the traffic, in bits per second. When this command is used with backward explicit congestion notification (BECN) approximation, the bit rate is the upper bound of the range of bit rates that will be permitted.

For a committed (average) burst rate, valid values are 30,000-10,000,000,000. For an excess (peak) burst rate, valid values are 8,000-10,000,000,000.

burst-size

(Optional) The number of bits in a measurement interval (Bc).

excess-burst-size

(Optional) The acceptable number of bits permitted to go over the Be.

account

(Optional) Enables ATM overhead accounting.

Note This keyword is required if you configure ATM overhead accounting.

qinq

Specifies queue-in-queue (qinq) encapsulation as the broadband aggregation system (BRAS) to digital subscriber line access multiplexer (DSLAM) encapsulation type for ATM overhead accounting.

dot1q

Specifies IEEE 802.1Q VLAN encapsulation as the BRAS-DSLAM encapsulation type for ATM overhead accounting.

aal5

Specifies the ATM Adaptation Layer 5 service for ATM overhead accounting. AAL5 supports connection-oriented variable bit rate (VBR) services.


Command Default

When the excess burst size (Be) is not configured, the default Be value is equal to the committed burst size (Bc). For more information about burst size defaults, see the Usage Guidelines section.

Traffic shaping overhead accounting for ATM is disabled.

Command Modes

Policy-map class configuration (config-pmap-c)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The measurement interval is the committed burst size (Bc) divided by committed information rate (CIR). Bc cannot be set to 0. If the measurement interval is too large (greater than 128 milliseconds), the system subdivides it into smaller intervals.

If you do not specify the committed burst size (Bc) and the excess burst size (Be), the algorithm decides the default values for the shape entity. The algorithm uses a 4 milliseconds measurement interval, so Bc is CIR * (4 / 1000).

Burst sizes larger than the default committed burst size (Bc) need to be explicitly specified. The larger the Bc, the longer the measurement interval. A long measurement interval may affect voice traffic latency, if applicable.

When the excess burst size (Be) is not configured, the default value is equal to the committed burst size (Bc).

Examples

The following example configures a shape entity with a CIR of 1 Mbps and attaches the policy map called dts-interface-all-action to interface pos1/0/0:

policy-map dts-interface-all-action
 class class-interface-all
  shape average 1000000
 
 
interface pos1/0/0
 service-policy output dts-interface-all-action

Traffic Shaping Overhead Accounting for ATM

When a parent policy has ATM overhead accounting enabled for shaping, you are not required to enable accounting at the child level using the police command. In the following configuration example, ATM overhead accounting is enabled for bandwidth on the gaming and class-default class of the child policy map named subscriber_classes and on the class-default class of the parent policy map named subscriber_line. The voip and video classes do not have ATM overhead accounting explicitly enabled. These priority classes have ATM overhead accounting implicitly enabled because the parent policy has ATM overhead accounting enabled. Notice that the features in the parent and child policies use the same encapsulation type.

policy-map subscriber_classes
 class voip
  priority level 1 
  police 8000
 class video
  priority level 2
  police 20
 class gaming
  bandwidth remaining percent 80 account aal5 snap-rbe-dot1q
 class class-default
  bandwidth remaining percent 20 account aal5 snap-rbe-dot1q
policy-map subscriber_line 
 class class-default
  bandwidth remaining ratio 10 account aal5 snap-rbe-dot1q
  shape average 512 account aal5 snap-rbe-dot1q
  service policy subscriber_classes

Related Commands      

Command
Description

bandwidth

Specifies or modifies the bandwidth allocated for a class belonging to a policy map, and enables ATM overhead accounting.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps. If configured, the command output includes information about ATM overhead accounting.

show running-config

Displays the current configuration of the router. If configured, the command output includes information about ATM overhead accounting.


show asr901 multicast-support

To display the platform support for IPv4 or IPv6 multicast, use the show asr901 multicast-support command.

show asr901 multicast-support

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command displays the platform support for IPv4 or IPv6 multicast.

Examples

This example shows the output from show asr901 multicast-support command on a Cisco ASR 901 series router:

Router# show asr901 multicast-support 
 
 
 Platform support for IPv4(v6) Multicast: ENABLED
 
 
 
 

Related Commands

Command
Description

asr901-platf-multicast enable

Enables platform multicast.


 
 

show atm cell-packing

To display cell packing information for the Layer 2 attachment circuits (ACs) configured on your system, use the show atm cell-packing command in privileged EXEC mode.

show atm cell-packing

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows output from the show atm cell-packing command:

Router# show atm cell-packing
									 avg # 						avg #
 
 
     Circuit                  local  cells/pkt  negotiated  cells/pkt    MCPT
     Type                     MNCP    rcvd       MNCP         sent       (us)
ATM0/2/0/1.200    vc 1/200      1       0          1           0           50
ATM0/2/0/1.300    vc 1/300      1       0          1           0           50
 
 

Related Commands

Command
Description

cell-packing

Packs multiple ATM cells into each MPLS or L2TPv3 packet.

atm cell-packing

Packs multiple ATM cells into each MPLS or L2TPv3 packet.


show cem circuit

To display a summary of CEM circuits, use the show cem circuit command in privileged EXEC mode.

show cem circuit [cem-id]

Syntax Description

cem-id

(Optional) Identifies the circuit configured with the cem-group command.


Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following examples show the output generated by this command;

Router# show cem circuit
CEM Int.       ID   Ctrlr     Admin     Circuit         AC  
-------------------------------------------------------------- 
CEM0/0         0    UP        UP        Enabled         UP  
CEM0/1         1    UP        UP        Enabled         UP  
CEM0/2         2    UP        UP        Enabled         UP  
CEM0/3         3    UP        UP        Enabled         UP  
CEM0/4         4    UP        UP        Enabled         UP  
CEM0/5         5    UP        UP        Enabled         UP 
 
 
Router# show cem circuit 5
 
 
CEM0/5, ID: 5, Line: UP, Admin: UP, Ckt: Enabled
Controller state: up                      
Idle Pattern: 0xFF, Idle cas: 0x8
Dejitter: 4, Sample Rate: 1, Payload Size: 192
Framing: Framed, (DS0 channels: 1-24)
CEM Defects Set
None
 
 
Signalling: No CAS
RTP: No RTP
 
 
Ingress Pkts:    527521938            Dropped:             0
Egress Pkts:     527521938            Dropped:             0                   
 
 
CEM Counter Details
Input Errors:    0                    Output Errors:       0                   
Pkts Missing:    0                    Pkts Reordered:      0                   
Misorder Drops:  0                    JitterBuf Underrun:  0
Error Sec:       0                    Severly Errored Sec: 0                   
Unavailable Sec: 0                    Failure Counts:      0                   
Pkts Malformed:  0 

Related Commands

Command
Description

show cem circuit detail

Displays detailed information about all CEM circuits.

show cem platform

Displays platform-specific error counters for all CEM circuits.

show cem platform errors

Displays platform-specific error counters for all CEM circuits.


show cem platform

To display platform-specific error counters for all CEM circuits, use the show cem platform command in privileged EXEC mode.

show cem platform [interface]

Syntax Description

interface

(Optional) Identifies the CEM interface (for example, CEM0/1).


Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following examples show the output generated by this command:

Router# show cem platform
CEM0/0 errors:
  net2cem_drops =============== 50/527658758
    net2cem_drops_underflow === 26
    net2cem_drops_overflow ==== 24
  Last cleared 6d02h
CEM0/1 errors:
  net2cem_drops =============== 50/527658759
    net2cem_drops_underflow === 25
    net2cem_drops_overflow ==== 25
  Last cleared 6d02h
CEM0/2 errors:
  net2cem_drops =============== 2/526990836
    net2cem_drops_overflow ==== 2
  Last cleared never
CEM0/3 errors:
  net2cem_drops =============== 1/526982274
    net2cem_drops_overflow ==== 1
  Last cleared never
CEM0/4 errors:
  net2cem_drops =============== 51/527658758
    net2cem_drops_underflow === 26
    net2cem_drops_overflow ==== 25
  Last cleared 6d02h
CEM0/5 errors:
  net2cem_drops =============== 48/527660498
    net2cem_drops_underflow === 24
    net2cem_drops_overflow ==== 24
  Last cleared 6d02h
 
 
Router# show cem platform cem0/1
CEM0/1 errors:
  net2cem_drops =============== 50/527678398
    net2cem_drops_underflow === 25
    net2cem_drops_overflow ==== 25
  Last cleared 6d02h

Related Commands

Command
Description

show cem circuit

Displays a summary of CEM circuits.

show cem circuit detail

Displays detailed information about all CEM circuits.

show cem platform errors

Displays platform-specific error counters for all CEM circuits.


show etherchannel

To display EtherChannel information for a channel, use the show etherchannel command in privileged EXEC mode.

show etherchannel [channel-group] {port-channel | detail | summary | port | load-balance}

Syntax Description

channel-group

(Optional) Number of the channel group. If you do not specify a value for the channel-group argument, all channel groups are displayed.

port-channel

Displays port channel information

detail

Displays detailed EtherChannel information.

summary

Displays a one-line summary per channel group.

port

Displays EtherChannel port information.

load-balance

Displays load-balance information.

protocol

Displays the enabled protocol.


Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

If you do not specify a value for the channel-group argument, all channel groups are displayed.

If the interface is configured as part of the channel in ON mode, the show etherchannel protocol command displays Protocol: - (Mode ON).

In the output of the show etherchannel summary command, the following conventions apply:

In the column that displays the protocol that is used for the channel, if the channel mode is ON, a hyphen (-) is displayed.

For LACP, multiple aggregators are supported. For example, if two different bundles are created, Po1 indicates the primary aggregator, and Po1A and Po1B indicates the secondary aggregators.

In the output of the show etherchannel load-balance command, the following conventions apply:

For EtherChannel load balancing of IPv6 traffic, if the traffic is bridged onto an EtherChannel (for example, it is a Layer 2 channel and traffic in the same VLAN is bridged across it), the traffic is always load balanced by the IPv6 addresses or src, dest, or src-dest, depending on the configuration. For this reason, the switch ignores the MAC/IP/ports for bridged IPv6 traffic. If you configure src-dst-mac, the src-dst-ip(v6) address is displayed. If you configure src-mac, the src-ip(v6) address is displayed.

IPv6 traffic that is routed over a Layer 2 or a Layer 3 channel is load balanced based on MAC addresses or IPv6 addresses, depending on the configuration. The MAC/IP and the src/dst/src-dst are supported, but load balancing that is based on Layer 4 ports is not supported. If you use the port keyword, the IPv6 addresses or either src, dst, or src-dst, is displayed.

Examples

The following example shows how to verify the configuration:

Router# show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
        src-dst-mac
 
 
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
  IPv4: Source XOR Destination MAC address
  IPv6: Source XOR Destination MAC address (routed packets)
        Source XOR Destination IP address (bridged packets)
 
 

Related Commands

Command
Description

channel-group

Assigns and configures an EtherChannel interface to an EtherChannel group.

channel-protocol

Sets the protocol that is used on an interface to manage channeling.


show ethernet loopback

To display information about the per port Ethernet loopbacks configured on a router or an interface, use the show ethernet loopback command in privileged EXEC mode.

show ethernet loopback active [brief | [interface-id] [service-instance id]]

Syntax Description

active

Displays active ethernet loopback sessions.

brief

Displays brief description of the current loopback sessions

interface-id

(Optional) Displays loopback information for the specified interface. Only physical interfaces support ethernet loopback.

service-instance id

Specifies the service instance ID.


Command Modes

Privileged EXEC

Command History

Release
Modification

15.2(2)SNG

This command was introduced on the Cisco ASR 901 router.


Usage Guidelines

If you do not specify an interface-id, all configured loopbacks appear. The router supports a maximum of two Ethernet loopback configurations.

Examples

The following example shows how to verify the configuration:

Router# show ethernet loopback active 
============================================================
Interface               : GigabitEthernet0/3
Service Instance        : 32
Direction               : Terminal
Time out(sec)           : 300
Status                  : on
Start time              : 14:15:01.742 IST Tue Jun 18 2013
Time left               : 00:04:48
Source Mac Address      : 0000.0002.0002
Destination Mac Address : 4055.3989.751c

Related Commands

Command
Description

start ethernet loopback or stop ethernet loopback

Starts or stops the loopback operation.


show interface port-channel

To display the EtherChannel interfaces and channel identifiers, with their mode and operational status, use the show interface port-channel command in privileged EXEC mode.

show interface port-channel {number}

Syntax Description

number

Optional value enables the display of information for one port channel interface number. The range is from 1 to 8.


Command Default

No default behaviors or values.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


show interfaces rep

Use the show interfaces rep User EXEC command to display Resilient Ethernet Protocol (REP) configuration and status for a specified interface or for all interfaces.

show interfaces [interface-id] rep [detail] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) Display REP configuration and status for a specified physical interface or port channel ID.

detail

(Optional) Display detailed REP configuration and status information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

In the output for the show interface rep [detail] command, in addition to an Open, Fail, or AP (alternate port) state, the Port Role might show as Fail Logical Open (FailLogOpen) or Fail No Ext Neighbor (FailNoNbr). These states indicate that the port is physically up, but REP is not configured on the neighboring port. In this case, one port goes into a forwarding state for the data path to help maintain connectivity during configuration. The Port Role for this port shows as Fail Logical Open; the port forwards all data traffic on all VLANs. The other failed Port Role shows as Fail No Ext Neighbor; this port blocks traffic for all VLANs.

When the external neighbors for the failed ports are configured, the failed ports go through the alternate port state transitions and eventually go to an Open state or remain as the alternate port, based on the alternate port election mechanism.

The output of this command is also included in the show tech-support privileged EXEC command output.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is sample output from the show interface rep command:

Switch # show interface rep 
Interface                Seg-id   Type        LinkOp     Role
---------------------- ------ ------------ ----------- ----
GigabitEthernet 0/1        1    Primary Edge  TWO_WAY    Open
GigabitEthernet 0/2        1    Edge          TWO_WAY    Open
 
 
 
 

This is sample output from the show interface rep command when the edge port is configured to have no REP neighbor. Note the asterisk (*) next to Primary Edge.

Router# show interface rep
Interface              Seg-id Type            LinkOp      Role
---------------------- ------ --------------  ----------- ----
GigabitEthernet0/1     2                      TWO_WAY     Open
GigabitEthernet0/2     2      Primary Edge*   TWO_WAY     Open
 
 

This is sample output from the show interface rep command when external neighbors are not configured:

Switch # show interface rep 
Interface                Seg-id   Type        LinkOp     Role
---------------------- ------ ------------ ----------- ----
GigabitEthernet0/1        1                 NO_NEIGHBOR FailNoNbr 
GigabitEthernet0/2        2                 NO_NEIGHBOR FailLogOpen
 
 

This is sample output from the show interface rep detail command for a specified interface:

Switch # show interface gigabitethernet0/2 rep detail
GigabitEthernet0/2   REP enabled
Segment-id: 1 (Segment)
PortID: 00030019E85BDD00
Preferred flag: No
Operational Link Status: INIT_DOWN
Current Key: 00000000000000000000
Port Role: Fail
Blocked VLAN: 1-4094
Admin-vlan: 1
Preempt Delay Timer: disabled
LSL Ageout Timer: 5000 ms
Configured Load-balancing Block Port: 1234567890123456
Configured Load-balancing Block VLAN: 1-4094
STCN Propagate to: none
LSL PDU rx: 0, tx: 0
HFL PDU rx: 0, tx: 0
BPA TLV rx: 0, tx: 0
BPA (STCN, LSL) TLV rx: 0, tx: 0
BPA (STCN, HFL) TLV rx: 0, tx: 0
EPA-ELECTION TLV rx: 0, tx: 0
EPA-COMMAND TLV rx: 0, tx: 0
EPA-INFO TLV rx: 0, tx: 0

Related Commands

Command
Description

repsegment

Enables REP on an interface and assigns a segment ID. This command is also used to configure a port as an edge port, a primary edge port, or a preferred port.

show reptopology [detail]

Displays information about all ports in the segment, including which one was configured and selected as the primary edge port.


show ip vrf

To display the set of defined Virtual Private Network (VPN) routing and forwarding (VRF) instances and associated interfaces, use the show ip vrf command in privileged EXEC mode.

show ip vrf [brief | detail | interfaces | id] [vrf-name] [output-modifiers]

Syntax Description

brief

(Optional) Displays concise information on the VRFs and associated interfaces.

detail

(Optional) Displays detailed information on the VRFs and associated interfaces.

interfaces

(Optional) Displays detailed information about all interfaces bound to a particular VRF or any VRF.

id

(Optional) Displays the VPN IDs that are configured in a PE router for different VPNs.

vrf-name

(Optional) Name assigned to a VRF.

output-modifiers

(Optional) For a list of associated keywords and arguments, use context-sensitive help.


Defaults

When no keywords or arguments are specified, the command shows concise information about all configured VRFs.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use this command to display information about VRFs. Two levels of detail are available:

The brief keyword (or no keyword) displays concise information.

The detail keyword displays all information.

To display information about all interfaces bound to a particular VRF, or to any VRF, use the interfaces keyword. To display information about VPN IDs assigned to a PE router, use the id keyword.

Examples

The following example displays information about all the VRFs configured on the router, including the downstream VRF for each associated VAI. The lines that are highlighted (for documentation purposes only) indicate the downstream VRF.

Router# show ip vrf 
 
 
  Name   Default RD   Interface
  D      2:0          Loopback2
                      Virtual-Access3 [D] 
                      Virtual-Access4 [D] 
  
  U      2:1          Virtual-Access3
                      Virtual-Access4
 
 

Table 2-6 describes the significant fields shown in the display.

Table 2-6 show ip vrf Field Descriptions 

Field
Description

Name

Specifies the VRF name.

Default RD

Specifies the default route distinguisher.

Interface

Specifies the network interface.


The following example displays detailed information about all of the VRFs configured on the router, including all of the VAIs associated with each VRF:

Router# show ip vrf detail 
 
 
VRF D; default RD 2:0; default VPNID <not set>
  Interfaces:
         Loopback2           Virtual-Access3 [D]  Virtual-Access4 [D]
  Connected addresses are not in global routing table
  Export VPN route-target communities
    RT:2:0                 
  Import VPN route-target communities
    RT:2:1                 
  No import route-map
  No export route-map
VRF U; default RD 2:1; default VPNID <not set>
  Interfaces:
    Virtual-Access3          Virtual-Access4         
  Connected addresses are not in global routing table
  No Export VPN route-target communities
  Import VPN route-target communities
    RT:2:1                 
  No import route-map
  No export route-map
 
 

Table 2-7 describes the significant fields shown in the display.

Table 2-7 show ip vrf detail Field Descriptions 

Field
Description

VPNID

Specifies the VPN ID assigned to the VRF.

Interfaces

Specifies the network interfaces.

Virtual-Accessn [D]

Specifies the downstream VRF.

Export

Specifies VPN route-target export communities.

Import

Specifies VPN route-target import communities.


The following example shows the interfaces bound to a particular VRF:

Router# show ip vrf interfaces
 
 
Interface	IP-Address	VRF	Protocol
Ethernet2	10.22.0.33	vrf1	up
Ethernet4	10.77.0.33	hub	up      
Router#
 
 

Table 2-8 describes the significant fields shown in the display.

Table 2-8 show ip vrf interfaces Field Descriptions 

Field
Description

Interface

Specifies the network interfaces for a VRF.

IP-Address

Specifies the IP address of a VRF interface.

VRF

Specifies the VRF name.

Protocol

Displays the state of the protocol (up or down) for each VRF interface.


The following is sample output that shows all the VPN IDs that are configured in the router and their associated VRF names and VRF route distinguishers (RDs):

Router# show ip vrf id
 
 
VPN Id          Name                             RD
2:3             vpn2                             <not set>
A1:3F6C         vpn1                             100:1
 
 

Table 2-9 describes the significant fields shown in the display.

Table 2-9 show ip vrf id Field Descriptions 

Field
Description

VPN Id

Specifies the VPN ID assigned to the VRF.

Name

Specifies the VRF name.

RD

Specifies the route distinguisher.


show mac-address-table

To display the MAC address table, use the show mac-address-table command in privileged EXEC mode.

show mac-address-table [address mac-addr] [aging-time vlan-id] [count vlan-id] [dynamic [address mac-address | interface type slot/port | vlan vlan-id]] [interface type/number] [multicast [{igmp-snooping | mld-snooping | vlan vlan-id}]] [static [[{address mac-addr} | {interface interface/switch-num//slot/port} | vlan vlan-id] [vlan vlan-id]

Syntax Description

address mac-addr

Displays information about the MAC-address table for a specific MAC address; see the "Usage Guidelines" section for format guidelines.

vlan vlan-id

(Optional) Displays information for a specific VLAN only. Range: 1 to 4094.

aging-time

Displays information about the MAC-address aging time.

count

Displays the number of entries that are currently in the MAC-address table.

dynamic

Displays information about the dynamic MAC-address table entries only.

interface interface

(Optional) Displays information about a specific interface type; possible valid values are gigabitethernet and tengigabitethernet.

multicast

Displays information about the multicast MAC-address table entries only.

igmp-snooping

Displays the addresses learned by Internet Group Management Protocol (IGMP0 snooping.

mld-snooping

Displays the addresses learned by multicast listener discovery version 2 (MLDv2) snooping.

static

Displays information about the static MAC-address table entries only.


Command Default

This command has no default settings.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The mac-addr is a 48-bit MAC address and the valid format is H.H.H.

The count keyword displays the number of multicast entries.

The multicast keyword displays the multicast MAC addresses (groups) in a VLAN or displays all statically installed or IGMP snooping-learned entries in the Layer 2 table.

The dynamic entries that are displayed in the Learn field are always set to Yes.

Examples

The following example shows the output for the show mac address-table count command:

Router#show mac address-table count
 
 
Mac Entries for Vlan 4094:
---------------------------
Dynamic Address Count  : 1
Static  Address Count  : 0
Total Mac Addresses    : 1
 
 
Mac Entries for Vlan 3107:
---------------------------
Dynamic Address Count  : 0
Static  Address Count  : 0
Total Mac Addresses    : 0
 
 
Total Mac Address Space Available: 32756
 
 

show network-clock synchronization

Displays the information about network-clock synchronization.

show network-clock synchronization [detail]

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command confirms if the system is in revertive mode or non-revertive mode and verify the non-revertive configurations.

Examples

This command shows the output of the show network-clock synchronization command to confirm if the system is in revertive mode:

RouterB#show network-clocks synchronization
Symbols: En - Enable, Dis - Disable, Adis - Admin Disable
			NA - Not Applicable
			* - Synchronization source selected
			# - Synchronization source force selected
			& - Synchronization source manually switched
Automatic selection process : Enable
Equipment Clock : 2048 (EEC-Option1)
Clock Mode : QL-Disable
ESMC : Disabled
SSM Option : 1
T0 : GigabitEthernet0/4
Hold-off (global) : 300 ms
Wait-to-restore (global) : 300 sec
Tsm Delay : 180 ms
Revertive : No
Nominated Interfaces
 
 
Interface     SigType     Mode/QL     Prio     QL_IN     ESMC Tx     ESMC Rx
Internal      NA          NA/Dis      251      QL-SEC    NA          NA
To0/12        NA          NA/En       1        QL-FAILED NA          NA
External 0/0/0 10M        NA/Dis      2        QL-FAILED NA          NA
Gi0/1         NA          Sync/En     20       QL-FAILED -           -
*Gi0/4        NA          Sync/En     21       QL-DNU    -           -
 
 
T4 Out
 
 
External Interface        SigType     Input      Prio         Squelch        AIS
External 0/0/0 E1         CRC4        Internal   1            FALSE          FALSE
 
 

Use the show network-clock synchronization detail command to display all details of network-clock synchronization parameters at the global and interface levels.

Router# show network-clocks synchronization detail
Symbols: En - Enable, Dis - Disable, Adis - Admin Disable
NA - Not Applicable
* - Synchronization source selected
# - Synchronization source force selected
& - Synchronization source manually switched
Automatic selection process : Enable
Equipment Clock : 2048 (EEC-Option1)
Clock Mode : QL-Disable
ESMC : Disabled
SSM Option : 1
T0 : External 0/0/0 10m
Hold-off (global) : 300 ms
Wait-to-restore (global) : 0 sec
Tsm Delay : 180 ms
Revertive : Yes
Force Switch: FALSE
Manual Switch: FALSE
Number of synchronization sources: 3
sm(netsync NETCLK_QL_DISABLE), running yes, state 2A
Last transition recorded: (begin)-> 2A (sf_change)-> 2A
 
 
 
 
Nominated Interfaces
 
 
Interface      SigType      Mode/QL          Prio         QL_IN      ESMC Tx     ESMC Rx
Internal       NA           NA/Dis           251          QL-SEC     NA          NA
To0/12         NA           NA/En            3            QL-SEC     NA          NA
*External 0/0/0 10M         NA/Dis           1            QL-SEC     NA          NA
Gi0/11         NA           Sync/En          2            QL-DNU     -           -
 
 
T4 Out
 
 
External Interface       SigType       Input         Prio         Squelch        AIS
External 0/0/0 E1        CRC4          Internal      1            FALSE          FALSE
 
 
 
 
Interface:
---------------------------------------------
Local Interface: Internal
Signal Type: NA
Mode: NA(Ql-disabled)
SSM Tx: DISABLED
SSM Rx: DISABLED
Priority: 251
QL Receive: QL-SEC
QL Receive Configured: -
QL Receive Overrided: -
QL Transmit: -
QL Transmit Configured: -
Hold-off: 0
Wait-to-restore: 0
Lock Out: FALSE
Signal Fail: FALSE
Alarms: FALSE
Slot Disabled: FALSE
SNMP input source index: 1
SNMP parent list index: 0
 
 
 
 
Local Interface: To0/12
Signal Type: NA
Mode: NA(Ql-disabled)
SSM Tx: DISABLED
SSM Rx: ENABLED
Priority: 3
QL Receive: QL-SEC
QL Receive Configured: -
QL Receive Overrided: -
QL Transmit: -
QL Transmit Configured: -
Hold-off: 300
Wait-to-restore: 0
Lock Out: FALSE
Signal Fail: FALSE
Alarms: FALSE
Slot Disabled: FALSE
SNMP input source index: 2
SNMP parent list index: 0
 
 
 
 
Local Interface: External 0/0/0
Signal Type: 10M
Mode: NA(Ql-disabled)
SSM Tx: DISABLED
SSM Rx: DISABLED
Priority: 1
QL Receive: QL-SEC
QL Receive Configured: -
QL Receive Overrided: -
QL Transmit: -
QL Transmit Configured: -
Hold-off: 300
Wait-to-restore: 0
Lock Out: FALSE
Signal Fail: FALSE
Alarms: FALSE
Active Alarms : None
Slot Disabled: FALSE
SNMP input source index: 3
SNMP parent list index: 0
 
 
 
 
Local Interface: Gi0/11
Signal Type: NA
Mode: Synchronous(Ql-disabled)
ESMC Tx: ENABLED
ESMC Rx: ENABLED
Priority: 2
QL Receive: QL-DNU
QL Receive Configured: -
QL Receive Overrided: -
QL Transmit: -
QL Transmit Configured: -
Hold-off: 300
Wait-to-restore: 0
Lock Out: FALSE
Signal Fail: FALSE
Alarms: FALSE None
Slot Disabled: FALSE
SNMP input source index: 4
SNMP parent list index: 0
 
 
 
 
External 0/0/0 e1 crc4's Input:
Internal
 Local Interface: Internal
 Signal Type: NA
 Mode: NA(Ql-disabled)
 SSM Tx: DISABLED
 SSM Rx: DISABLED
 Priority: 1
 QL Receive: QL-SEC
 QL Receive Configured: -
 QL Receive Overrided: -
 QL Transmit: -
 QL Transmit Configured: -
 Hold-off: 300
 Wait-to-restore: 0
 Lock Out: FALSE
 Signal Fail: FALSE
 Alarms: FALSE
 Slot Disabled: FALSE
 SNMP input source index: 1
 SNMP parent list index: 1

show platform hardware

To display the status of hardware devices on the Cisco ASR 901, use the show platform hardware command. The command displays information about hardware devices on the Cisco ASR 901 for troubleshooting and debugging purposes.

show platform hardware {adrian | bits | cpld | cpu | ethernet | fio | hwic | rtm | stratum | ufe winpath

Syntax Description

adrian

Displays information about the adrian hardware.

bits

Displays information about the BITS hardware.

cpld

Displays information about the CPLD hardware.

cpu

Displays information about the CPU.

ethernet

Displays information about the ethernet interfaces on the Cisco ASR 901.

fio

Displays information about the FIO fpga hardware.

hwic

Displays information about the HWICs installed on the Cisco ASR 901.

rtm

Displays information about the RTM Module (ASM-M2900-TOP daughter card).

stratum

Displays information about the stratum hardware.

ufe

Displays information about the UFE hardware.

winpath

Displays information about the Winpath hardware.


Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Related Commands

Command
Description

show controller

Displays the status of system controllers.


show platform ptp state

To display the status of ptp protocol on the Cisco ASR 901 router, use the show platform ptp state command.

show platform ptp state

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows sample output for show platform ptp state comamnd:

Router# show platform ptp state
flag = 2
	 FLL State                     : 2 (Fast Loop)
	 FLL Status Duration           : 7049 (sec)
 
 
	 Forward Flow Weight           : 0.0
	 Forward Flow Transient-Free   : 900 (900 sec Window)
	 Forward Flow Transient-Free   : 3600 (3600 sec Window)
	 Forward Flow Transactions Used: 23.0 (%)
	 Forward Flow Oper. Min TDEV   : 4254.0 (nsec)
	 Forward Mafie                 : 38.0
	 Forward Flow Min Cluster Width: 7550.0 (nsec)
	 Forward Flow Mode Width       : 21400.0 (nsec)
 
 
	 Reverse Flow Weight           : 100.0
	 Reverse Flow Transient-Free   : 900 (900 sec Window)
	 Reverse Flow Transient-Free   : 3600 (3600 sec Window)
	 Reverse Flow Transactions Used: 200.0 (%)
	 Reverse Flow Oper. Min TDEV   : 487.0 (nsec)
	 Reverse Mafie                 : 36.0
	 Reverse Flow Min Cluster Width: 225.0 (nsec)
	 Reverse Flow Mode Width       : 450.0 (nsec)
 
 
	 Frequency Correction          : 257.0 (ppb)
	 Phase Correction              : 0.0 (ppb)
 
 
	 Output TDEV Estimate          : 1057.0 (nsec)
	 Output MDEV Estimate          : 1.0 (ppb)
 
 
	 Residual Phase Error          : 0.0 (nsec)
	 Min. Roundtrip Delay          : 45.0 (nsec)
 
 
	 Sync Packet Rate              : 65 (pkts/sec)
	 Delay Packet Rate             : 65 (pkts/sec)
 
 
	 Forward IPDV % Below Threshold: 0.0
	 Forward Maximum IPDV          : 0.0 (usec)
	 Forward Interpacket Jitter    : 0.0 (usec)
 
 
	 Reverse IPDV % Below Threshold: 0.0
	 Reverse Maximum IPDV          : 0.0 (usec)
	 Reverse Interpacket Jitter    : 0.0 (usec)
 
 

Related Commands

Command
Description

show platform ptp stats

Displays statistics about the ptp protocol on the Cisco ASR 901 router.


show platform ptp stats

To display statistics about ptp protocol on the Cisco ASR 901 router, use the show platform ptp stats command.

show platform ptp stats

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows sample output for show platform ptp stats comamnd:

Router# show platform ptp stats
Statistics for PTP clock 0
###############################
Number of ports : 1
Pkts Sent : 1811997
Pkts Rcvd : 619038
Pkts Discarded : 0
Statistics for PTP clock port 1
##################################
Pkts Sent : 1811997
Pkts Rcvd : 619038
Pkts Discarded : 0
Signals Rejected : 0
Statistics for peer 1
########################
IP addr : 9.9.9.14
Pkts Sent : 355660
Pkts Rcvd : 124008
Statistics for peer 2
########################
IP addr : 9.9.9.13
Pkts Sent : 355550
Pkts Rcvd : 123973
Statistics for peer 3
########################
IP addr : 9.9.9.11
Pkts Sent : 354904
Pkts Rcvd : 123972
Statistics for peer 4
########################
IP addr : 9.9.9.12
Pkts Sent : 353815
Pkts Rcvd : 123525
Statistics for peer 5
########################
IP addr : 9.9.9.10
Pkts Sent : 352973
Pkts Rcvd : 123326
 
 

Related Commands

Command
Description

show platform ptp status

Displays the status of the ptp protocol on the Cisco ASR 901 router.


show platform ptp stats detailed

To display detailed statistics about ptp protocol on the Cisco ASR 901 router, use the show platform ptp stats detailed command.

show platform ptp stats detailed

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows sample output for show platform ptp stats detailed comamnd:

Router# show platform ptp stats detailed
Statistics for PTP clock 0
###############################
Number of ports   : 1
Pkts Sent         : 37416
Pkts Rcvd         : 113563
Invalid Pkts Rcvd : 0
        Statistics for PTP clock port 1
        ##################################
        Pkts Sent         : 37416
        Pkts Rcvd         : 113563
        Invalid Pkts Rcvd : 0
                Statistics for peer 0
                ########################
                IP address           : 10.10.10.10
                Announces Sent       : 0
                Announces Rcvd       : 297
                Syncs Sent           : 0
                Syncs Rcvd           : 37925
                Follow Ups Sent      : 0
                Follow Ups Rcvd      : 37925
                Delay Reqs Sent      : 37404
                Delay Reqs Rcvd      : 0
                Delay Resps Sent     : 0
                Delay Resps Rcvd     : 37404
                Mgmts Sent Rcvd      : 0
                Mgmts Rcvd           : 0
                Signals Sent         : 12
                Signals Rcvd         : 12
                Invalid Packets Rcvd : 0
 
 

Related Commands

Command
Description

show platform ptp stats

Displays the statistics of the ptp protocol on the Cisco ASR 901 router.


show platform tcam detailed

To display the current occupancy that includes per-TCAM rules information such as number of TCAM rules used or free and feature(s) using the TCAM rule, use the show platform tcam detailed command.

show platform tcam detailed

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Examples

The following is sample output from the show platform tcam detailed command:

Router# show platform tcam detailed
 
 
Ingress    : 2/8 slices, 512/2048 entries used
Pre-Ingress: 3/4 slices, 768/1024 entries used
Egress     : 0/4 slices, 0/512 entries used
 
 
Slice ID: 1
Stage: Pre-Ingress
Mode: Single
Entries used: 28/256
Slice allocated to: Layer-2 Classify and Assign Group
 
 
Slice ID: 4
Stage: Pre-Ingress
Mode: Double
Entries used: 10/128
Slice allocated to: L2CP
 
 
Slice ID: 2
Stage: Ingress
Mode: Double
Entries used: 29/128
Slice allocated to: L2 Post-Switch Processing Group
 
 
Slice ID: 3
Stage: Ingress
Mode: Single
Entries used: 13/256
Slice allocated to: CESoPSN-UDP, CEF, Layer-3 Control Protocols
 
 

show platform tcam summary

To display the current occupancy of TCAM with summary of the number of TCAM rules allocated or free, use the show platform tcam summary command.

show platform tcam summary

Syntax Description

This command has no arguments.

Command Modes

Privileged EXEC

Command History

Release
Modification

15.3(2)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Examples

The following is sample output freom the show platform tcam summary command:

Router# show platform tcam summary
Ingress    : 2/8 slices, 512/2048 entries used
Pre-Ingress: 3/4 slices, 768/1024 entries used
Egress     : 0/4 slices, 0/512 entries used
 
 

show policy-map

To display the configuration of all classes for a specified service policy map or of all classes for all existing policy maps, use the show policy-map command in user EXEC or privileged EXEC mode.

show policy-map [policy-map]

Syntax Description

policy-map

(Optional) Name of the service policy map whose complete configuration is to be displayed. The name can be a maximum of 40 characters.


Command Default

All existing policy map configurations are displayed.

Command Modes

User EXEC (>)
Privileged EXEC (#)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The show policy-map command displays the configuration of a policy map created using the policy-map command. You can use the show policy-map command to display all class configurations comprising any existing service policy map, whether or not that policy map has been attached to an interface. The command displays:

ECN marking information only if ECN is enabled on the interface.

Bandwidth-remaining ratio configuration and statistical information, if configured and used to determine the amount of unused (excess) bandwidth to allocate to a class queue during periods of congestion.

Examples

This section provides sample output from typical show policy-map commands. Depending upon the interface or platform in use and the options enabled (for example, Weighted Fair Queueing [WFQ]), the output you see may vary slightly.

Traffic Policing: Example

The following is sample output from the show policy-map command. This sample output displays the contents of a policy map called "policy1." In policy 1, traffic policing on the basis of a committed information rate (CIR) of 20 percent has been configured, and the bc and be have been specified in milliseconds. As part of the traffic policing configuration, optional conform, exceed, and violate actions have been specified.

Router# show policy-map policy1
 
 
  Policy Map policy1
    Class class1
     police cir percent 20 bc 300 ms pir percent 40 be 400 ms
       conform-action transmit 
       exceed-action drop 
       violate-action drop 
 
 

Table 2-10 describes the significant fields shown in the display.

Table 2-10 show policy-map Field Descriptions—Configured for Traffic Policing 

Field
Description

Policy Map

Name of policy map displayed.

Class

Name of the class configured in the policy map displayed.

police

Indicates that traffic policing on the basis of specified percentage of bandwidth has been enabled. The committed burst (Bc) and excess burst (Be) sizes have been specified in milliseconds (ms), and optional conform, exceed, and violate actions have been specified.


Related Commands

Command
Description

bandwidth

Specifies or modifies the bandwidth allocated for a class belonging to a policy map, and enables ATM overhead accounting.

class (policy map)

Specifies the name of the class whose policy you want to create or change, and the default class (commonly known as the class-default class) before you configure its policy.

class-map

Creates a class map to be used for matching packets to a specified class.

drop

Configures a traffic class to discard packets belonging to a specific class.

police

Configures traffic policing.

police (two rates)

Configures traffic policing using two rates, the CIR and the PIR.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

shape

Shapes traffic to the indicated bit rate according to the algorithm specified, and enables ATM overhead accounting.

show policy-map class

Displays the configuration for the specified class of the specified policy map.

show policy-map interface

Displays the packet statistics of all classes that are configured for all service policies either on the specified interface or subinterface or on a specific PVC on the interface.

show running-config

Displays the current configuration of the router. If configured, the command output includes information about ATM overhead accounting.

show table-map

Displays the configuration of a specified table map or of all table maps.

table-map (value mapping)

Creates and configures a mapping table for mapping and converting one packet-marking value to another.


show policy-map interface

To display the statistics and the configurations of the input and output policies that are attached to an interface, use the show policy-map interface command in user EXEC or privileged EXEC mode.

show policy-map interface [type access-control] type number [vc [vpi/] vci] [dlci dlci] [input | output]

Syntax Description

type

Type of interface or subinterface whose policy configuration is to be displayed.

number

Port, connector, or interface card number.

vc

(Optional) For ATM interfaces only, shows the policy configuration for a specified PVC.

vpi/

(Optional) ATM network virtual path identifier (VPI) for this permanent virtual circuit (PVC).

The vpi and vci arguments cannot both be set to 0; if one is 0, the other cannot be 0.

The absence of both the forward slash (/) and a vpi value defaults the vpi value to 0. If this value is omitted, information for all virtual circuits (VCs) on the specified ATM interface or subinterface is displayed.

vci

(Optional) ATM network virtual channel identifier (VCI) for this PVC. This value ranges from 0 to 1 less than the maximum value set for this interface by the atm vc-per-vp command. Typically, the lower values 0 to 31 are reserved for specific traffic (F4 Operation, Administration, and Maintenance [OAM], switched virtual circuit [SVC] signaling, Integrated Local Management Interface [ILMI], and so on) and should not be used.

The VCI is a 16-bit field in the header of the ATM cell. The VCI value is unique only on a single link, not throughout the ATM network, because it has local significance only.

The vpi and vci arguments cannot both be set to 0; if one is 0, the other cannot be 0.

dlci

(Optional) Indicates a specific PVC for which policy configuration will be displayed.

dlci

(Optional) A specific data-link connection identifier (DLCI) number used on the interface. Policy configuration for the corresponding PVC will be displayed when a DLCI is specified.

input

(Optional) Indicates that the statistics for the attached input policy will be displayed.

output

(Optional) Indicates that the statistics for the attached output policy will be displayed.

slot

(ATM shared port adapter only) Chassis slot number. See the appropriate hardware manual for slot information. For SIPs, see the platform-specific SPA hardware installation guide or the corresponding "Identifying Slots and Subslots for SIPs and SPAs" topic in the platform-specific SPA software configuration guide.

/subslot

(ATM shared port adapter only) Secondary slot number on an SPA interface processor (SIP) where a SPA is installed. See the platform-specific SPA hardware installation guide and the corresponding "Specifying the Interface Address on an SPA" topic in the platform-specific SPA software configuration guide for subslot information.

/port

(ATM shared port adapter only) Port or interface number. See the appropriate hardware manual for port information. For SPAs, see the corresponding "Specifying the Interface Address" topics in the platform-specific SPA software configuration guide.

.subinterface

(ATM shared port adapter only—Optional) Subinterface number. The number that precedes the period must match the number to which this subinterface belongs. The range is 1 to 4,294,967,293.

interface-type

(Optional) Interface type; possible valid values are ethernet, gigabitethernet, tengigabitethernet

interface-number

(Optional) Module and port number; see the "Usage Guidelines" section for valid values.

null 0

(Optional) Specifies the null interface; the only valid value is 0.

vlan vlan-id

(Optional) Specifies the VLAN ID; valid values are from 1 to 4094.

detailed

(Optional) Displays additional statistics.

class class-name

(Optional) Displays the QoS policy actions for the specified class.

port-channel channel-number

(Optional) Displays the EtherChannel port-channel interface.


Command Default

This command displays the packet statistics of all classes that are configured for all service policies on the specified interface or subinterface or on a specific permanent virtual circuit (PVC) on the interface.

The absence of both the forward slash (/) and a vpi value defaults the vpi value to 0. If this value is omitted, information for all virtual circuits (VCs) on the specified ATM interface or subinterface is displayed.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The show policy-map interface command displays the packet statistics for classes on the specified interface or the specified PVC only if a service policy has been attached to the interface or the PVC.

The counters displayed after the show policy-map interface command is entered are updated only if congestion is present on the interface.

Related Commands

Command
Description

class-map

Creates a class map to be used for matching packets to a specified class.

police

Configures traffic policing.

police (percent)

Configures traffic policing on the basis of a percentage of bandwidth available on an interface.

police (two rates)

Configures traffic policing using two rates, the CIR and the PIR.

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

priority

Specifies that low-latency behavior must be given to a traffic class and configures multiple priority queues.

shape (percent)

Specifies average or peak rate traffic shaping on the basis of a percentage of bandwidth available on an interface.

show class-map

Display all class maps and their matching criteria.

show interfaces

Displays statistics for all interfaces configured on a router or access server.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map class

Displays the configuration for the specified class of the specified policy map.


show ptp port running detail

To display the running details of the PTP port, use the show ptp port running detail command.

show ptp port running detail

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC (#)

Command History

Release
Modification

15.4(1)S

This command was introduced on the Cisco ASR 901 Series Aggregation Services Routers.


Usage Guidelines

This command is used to display running details of the PTP port.


Note Accuracy and log variance are not displayed for the telecom profile since the fields are not required for selecting the best master.


Examples

This example shows the output from show ptp port running detail command on a Cisco ASR 901 router:

Router# show ptp port running detail 
 
 
PORT [SLAVE] CURRENT PTP MASTER PORT
  Protocol Address: 10.10.10.10
  Clock Identity: 0xE4:D3:F1:FF:FE:22:FD:B8
 
 
PORT [SLAVE] PREVIOUS PTP MASTER PORT
  Protocol Address: 30.30.30.30
  Clock Identity: 0xE0:2F:6D:FF:FE:74:EF:70
  Reason: 
 
 
PORT [SLAVE] LIST OF PTP MASTER PORTS
 
 
LOCAL PRIORITY 0
  Protocol Address: 10.10.10.10
  Clock Identity:  0xE4:D3:F1:FF:FE:22:FD:B8
  PTSF Status: 
  Alarm In Stream: 
  Clock Stream Id: 0
  Priority1: 128
  Priority2: 128
  Class: 84
  Accuracy: Unknown   <===========
  Offset (log variance): 0 <==========
  Steps Removed: 0
 
 
LOCAL PRIORITY 1
  Protocol Address: 30.30.30.30
  Clock Identity:  0xE0:2F:6D:FF:FE:74:EF:70
  PTSF Status: 
  Alarm In Stream: 
  Clock Stream Id: 0
  Priority1: 1
  Priority2: 1
  Class: 104
  Accuracy: Unknown   <========
  Offset (log variance): 0   <======
  Steps Removed: 0
 
 

show rep topology

Use the show rep topology User EXEC command to display Resilient Ethernet Protocol (REP) topology information for a segment or for all segments, including the primary and secondary edge ports in the segment.

show rep topology [segment segment_id] [archive] [detail] [ | {begin | exclude | include} expression]

Syntax Description

segment-id

(Optional) Display REP topology information for the specified segment. The ID range is from 1 to 1024.

archive

(Optional) Display the previous topology of the segment. This keyword can be useful for troubleshooting a link failure.

detail

(Optional) Display detailed REP topology information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The output of this command is also included in the show tech-support privileged EXEC command output.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is a sample output from the show rep topology segment privileged EXEC command:

Switch # show rep topology segment 1
REP Segment 1
BridgeName       PortName   Edge Role
---------------- ---------- ---- ----
sw1_multseg_3750 Gi1/1/1    Pri  Alt 
sw3_multseg_3400 Gi0/13          Open
sw3_multseg_3400 Gi0/14          Alt 
sw4_multseg_3400 Gi0/13          Open
sw4_multseg_3400 Gi0/14          Open
sw5_multseg_3400 Gi0/13          Open
sw5_multseg_3400 Gi0/14          Open
sw2_multseg_3750 Gi1/1/2         Open
sw2_multseg_3750 Gi1/1/1         Open
sw1_multseg_3750 Gi1/1/2    Sec  Open
 
 

This is a sample output from the show rep topology command when the edge ports are configured to have no REP neighbor:

Switch # show rep topology 
REP Segment 2
BridgeName       PortName   Edge  Role
---------------- ---------- ----  ----
sw8-ts8-51       Gi0/2      Pri*  Open
sw9-ts11-50      Gi1/0/4          Open
sw9-ts11-50      Gi1/0/2          Open
sw1-ts11-45      Gi0/2            Alt 
sw1-ts11-45      Po1              Open
sw8-ts8-51       Gi0/1      Sec*  Open
 
 

This example shows output from the show rep topology detail command:

Router# show rep topology detail
REP Segment 2
repc_2_24ts, Fa0/2 (Primary Edge)
  Alternate Port, some vlans blocked
  Bridge MAC: 0019.e714.5380
  Port Number: 004
  Port Priority: 080
  Neighbor Number: 1 / [-10]
repc_3_12cs, Gi0/1 (Intermediate)
  Open Port, all vlans forwarding
  Bridge MAC: 001a.a292.3580
  Port Number: 001
  Port Priority: 000
  Neighbor Number: 2 / [-9]
repc_3_12cs, Po10 (Intermediate)
  Open Port, all vlans forwarding
  Bridge MAC: 001a.a292.3580
  Port Number: 080
  Port Priority: 000
  Neighbor Number: 3 / [-8]
repc_4_12cs, Po10 (Intermediate)
  Open Port, all vlans forwarding
  Bridge MAC: 001a.a19d.7c80
  Port Number: 080
  Port Priority: 000
  Neighbor Number: 4 / [-7]
repc_4_12cs, Gi0/2 (Intermediate)
  Alternate Port, some vlans blocked
  Bridge MAC: 001a.a19d.7c80
  Port Number: 002
  Port Priority: 040
  Neighbor Number: 5 / [-6]
 
<output truncated> 
 
 

This example shows output from the show rep topology segment archive command:

Router# show rep topology segment 1 archive
REP Segment 1
BridgeName       PortName   Edge Role
---------------- ---------- ---- ----
sw1_multseg_3750 Gi1/1/1    Pri  Open
sw3_multseg_3400 Gi0/13          Open
sw3_multseg_3400 Gi0/14          Open
sw4_multseg_3400 Gi0/13          Open
sw4_multseg_3400 Gi0/14          Open
sw5_multseg_3400 Gi0/13          Open
sw5_multseg_3400 Gi0/14          Open
sw2_multseg_3750 Gi1/1/2         Alt 
sw2_multseg_3750 Gi1/1/1         Open
sw1_multseg_3750 Gi1/1/2    Sec  Open

Related Commands

Command
Description

rep segment

Enables REP on an interface and assigns a segment ID. This command is also used to configure a port as an edge port, a primary edge port, or a preferred port.


show table-map

To display the configuration of a specified table map or all table maps, use the show table-map command in EXEC mode.

show table-map table-map-name

Syntax Description

table-map-name

Name of table map used to map one packet-marking value to another. The name can be a maximum of 64 alphanumeric characters.


Command Modes

EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The sample output of the show table-map command shows the contents of a table map called "map 1". In "map1", a "to-from" relationship has been established and a default value has been defined. The fields for establishing the "to-from" mappings are further defined by the policy map in which the table map will be configured. (Configuring a policy map is the next logical step after creating a table map.)

For instance, a precedence or differentiated services code point (DSCP) value of 0 could be mapped to a class of service (CoS) value of 1, or vice versa, depending on the how the values are defined in the table map. Any values not explicitly defined in a "to-from" relationship will be set to a default value.

The following sample output of the show table-map command displays the contents of a table map called "map1". In this table map, a packet-marking value of 0 is mapped to a packet-marking value of 1. All other packet-marking values are mapped to the default value 3.

Router# show table-map map1
 
 
 Table Map map1
 from 0 to 1
 default 3
 
 

Table 2-11 describes the fields shown in the display.

Table 2-11 show table-map Field Descriptions 

Field
Description

Table Map

The name of the table map being displayed.

from, to

The values of the "to-from" relationship established by the table-map (value mapping) command and further defined by the policy map in which the table map will be configured.

default

The default action to be used for any values not explicitly defined in a "to-from" relationship by the table-map (value mapping) command. If a default action is not specified in the table-map (value mapping) command, the default action is "copy".


Related Commands

Command
Description

policy-map

Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy.

show policy-map

Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps.

show policy-map class

Displays the configuration for the specified class of the specified policy map.

table-map (value mapping)

Creates and configures a mapping table for mapping and converting one packet-marking value to another.


show xconnect

To display information about xconnect attachment circuits and pseudowires (PWs), use the show xconnect all command in privileged EXEC mode.

show xconnect {all | interface interface | peer ip-address {all | vcid vcid}} [detail]

Syntax Description

all

Displays information about all xconnect attachment circuits and PWs.

interface interface

Displays information about xconnect attachment circuits and PWs on the specified interface. Valid values for the argument are as follows:

atm number—Displays xconnect information for a specific ATM interface or subinterface.

atm number vp vpi-value—Displays virtual path (VP) xconnect information for a specific ATM virtual path identifier (VPI). This command does not display information about virtual connect (VC) xconnects using the specified VPI.

atm number vp vpi-value/vci-value—Displays VC xconnect information for a specific ATM VPI and virtual circuit identifier (VCI) combination.

serial number—Displays xconnect information for a specific serial interface.

serial number dlci-number—Displays xconnect information for a specific Frame Relay data-link connection identifier (DLCI).

vlan vlan-number—Displays vlan-mode xconnect information for a specific VLAN interface.

peer ip-address {all | vcid vcid}

Displays information about xconnect attachment circuits and PWs associated with the specified peer IP address.

all—Displays all xconnect information associated with the specified peer IP address.

vcid vcid—Displays xconnect information associated with the specified peer IP address and the specified VC ID.

detail

(Optional) Displays detailed information about the specified xconnect attachment circuits and PWs.


Command Modes

Privileged EXEC

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The show xconnect all command can be used to display, sort, and filter basic information about all xconnect attachment circuits and PWs.

You can use the show xconnect all command output to help determine the appropriate steps to troubleshoot an xconnect configuration problem. More specific information about a particular type of xconnect can be displayed using the commands listed in the Related Commands table.

Examples

The following example shows show xconnect all command output in the brief (default) display format. The output shows information about the interfaces and VCs that have been configured to transport various Layer 2 packets on the router.

Router# show xconnect all
 
 
Legend: XC ST=Xconnect State, S1=Segment1 State, S2=Segment2 State
UP=Up, DN=Down, AD=Admin Down, IA=Inactive, NH=No Hardware 
XC ST     Segment 1 		 	S1 Segment 2 S2
ST     Segment 1                         S1 Segment 2                         S2
------+---------------------------------+--+---------------------------------+--
UP     ac   Et0/0(Ethernet)              UP mpls 10.55.55.2:1000              UP
UP     ac   Et1/0.1:200(Eth VLAN)        UP mpls 10.55.55.2:5200              UP
IA pri ac   Et1/0.2:100(Eth VLAN)        UP ac   Et2/0.2:100(Eth VLAN)        UP
UP sec ac   Et1/0.2:100(Eth VLAN)        UP mpls 10.55.55.3:1101              UP
 
 

Table 2-12 describes the significant fields shown in the display.

Table 2-12 show xconnect all Field Descriptions 

Field
Description

XC ST

State of the xconnect attachment circuit or PW. Valid states are:

UP—The xconnect attachment circuit or PW is up. Both segment 1 and segment 2 must be up for the xconnect to be up.

DN—The xconnect attachment circuit or PW is down. Either segment 1, segment 2, or both segments are down.

IA—The xconnect attachment circuit or PW is inactive. This state is valid only when PW redundancy is configured.

NH—One or both segments of this xconnect no longer has the required hardware resources available to the system.

Segment 1

or

Segment 2

Information about the type of xconnect, the interface type, and the IP address the segment is using. Types of xconnects are:

ac—Attachment circuit.

pri ac—Primary attachment circuit.

sec ac—Secondary attachment circuit.

mpls—Multiprotocol Label Switching.

l2tp—Layer 2 Tunnel Protocol.

S1

or

S2

State of the segment. Valid states are:

UP—The segment is up.

DN—The segment is down.

AD—The segment is administratively down.


The following example shows show xconnect all command output in the detailed display format:

Router# show xconnect all detail
 
 
Legend: XC ST=Xconnect State, S1=Segment1 State, S2=Segment2 State
UP=Up, DN=Down, AD=Admin Down, IA=Inactive, NH=No HardwareXC 
ST     Segment 1                         S1 Segment 2                         S2
------+---------------------------------+--+---------------------------------+--
UP     ac   Et0/0(Ethernet)              UP mpls 10.55.55.2:1000              UP
            Interworking: ip                     Local VC label 16 
                                                 Remote VC label 16 
                                                 pw-class: mpls-ip 
UP     ac   Et1/0.1:200(Eth VLAN)        UP mpls 10.55.55.2:5200              UP
            Interworking: ip                     Local VC label 17 
                                                 Remote VC label 20 
                                                 pw-class: mpls-ip 
IA pri ac   Et1/0.2:100(Eth VLAN)        UP ac   Et2/0.2:100(Eth VLAN)        UP
            Interworking: none                   Interworking: none 
UP sec ac   Et1/0.2:100(Eth VLAN)        UP mpls 10.55.55.3:1101              UP
            Interworking: none                   Local VC label 23 
                                                 Remote VC label 17 
                                                 pw-class: mpls 
 
 

The additional fields displayed in the detailed output are self-explanatory.

Related Commands

Command
Description

show atm pvc

Displays all ATM PVCs and traffic information.

show atm vc

Displays all ATM PVCs and SVCs and traffic information.

show atm vp

Displays the statistics for all VPs on an interface or for a specific VP.

show connect

Displays configuration information about drop-and-insert connections that have been configured on a router.

show frame-relay pvc

Displays statistics about PVCs for Frame Relay interfaces.

show interfaces

Displays statistics for all interfaces configured on the router or access server.

show mpls l2transport binding

Displays VC label binding information.

show mpls l2transport vc

Displays information about AToM VCs that have been enabled to route Layer 2 packets on a router.


snmp mib rep trap-rate

To enable the router to send REP traps and sets the number of traps sent per second, use the snmp mib rep trap-rate command. To remove the traps, enter the no snmp mib rep trap-rate command.

snmp mib rep trap-rate value

no snmp mib rep trap-rate

Syntax Description

value

Specifies the number of traps sent per second. The range is from 0 to 1000. The default is 0 (no limit imposed; a trap is sent at every occurrence).


Command Modes

Global Configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The snmp mib rep trap-rate command configures the switch to send REP-specific traps to notify the SNMP server of link operational status changes and port role changes.

Examples

The example shows how to configure the switch to send REP-specific traps:

Router(config)# snmp mib rep trap-rate 500
 
 

speed

To configure the speed for a Fast Ethernet or Gigabit Ethernet interface, use the speed command in interface configuration mode. To return to the default setting, use the no form of this command.

speed {10 | 100 | 1000 [negotiate] | auto [speed-list]}

no speed

Syntax Description

10

Configures the interface to transmit at 10 Mbps.

100

Configures the interface to transmit at 100 Mbps.

1000

Configures the interface to transmit at 1000 Mbps. This keyword is valid only for interfaces that support Gigabit Ethernet.

auto

Enables Fast Ethernet autonegotiation. The interface automatically operates at 10 Mbps or 100 Mbps depending on environmental factors, such as the type of media and transmission speeds for the peer routers, hubs, and switches used in the network configuration. Autonegotiation is the default.

nonegotiate

(Optional) Enables or disables the link-negotiation protocol on the Gigabit Ethernet ports.

speed-list

(Optional) Speed autonegotiation capability to a specific speed; see the "Usage Guidelines" section for valid values.


Defaults

auto

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use the speed [10 | 100] command for 10/100 ports, the speed auto [10 100 [1000]] command for 10/100/1000 ports, and the speed [1000 | nonegotiate] command for Gigabit Ethernet ports.

Gigabit Ethernet Interfaces

The Gigabit Ethernet interfaces are full duplex only. You cannot change the duplex mode on the Gigabit Ethernet interfaces or on a 10/100/1000-Mbps interface that is configured for Gigabit Ethernet.

Speed Command Syntax Combinations

Table 2-1 lists the supported command options by interface.

Table 2-13 Supported speed Command Options 

Interface Type
Supported Syntax
Default Setting
Usage Guidelines

10/100/1000-Mbps interface

speed auto [{10 100} [1000]]

auto

If the speed is set to auto, you cannot set duplex.

If the speed is set to 10 or 100, and you do not configure the duplex setting, the duplex is set to half by default.

If the speed is set to 10 100, the interface is not forced to half duplex by default.

Gigabit Ethernet module

speed [1000 | nonegotiate]

Speed is 1000 or negotiation is enabled.

Speed, duplex, flow control, and clocking negotiations are enabled.

10-Mbps ports

Factory set

Not applicable.

 

Autonegotiation

To enable the autonegotiation capability on an RJ-45 interface, you must set either the speed command or the duplex command to auto. The default configuration is that both commands are set to auto.

If you need to force an interface port to operate with certain settings and therefore disable autonegotiation, you must be sure that the remote link is configured for compatible link settings for proper transmission. This includes support of flow control on the link.

When you enable link negotiation, the speed, duplex, flow control, and clocking negotiations between two Gigabit Ethernet ports are automatically enabled.

Speed Settings

Separate the speed-list entries with a space.

When manually configuring the interface speed to either 10 or 100 Mbps, the switch prompts you to configure duplex mode on the interface.

The following speed-list configurations are supported:

speed auto—Negotiate all speeds.

speed auto 10 100—Negotiate 10 and 100 speeds only.

speed auto 10 100 1000—Negotiate all speeds.

Speed and Duplex Combinations

Table 2-14 describes the interface behavior for various combinations of the duplex and speed command settings. The specified duplex command configured with the specified speed command produces the resulting system action.

If you decide to configure the interface speed and duplex commands manually, and enter a value other than speed auto (for example, 10 or 100 Mbps), ensure that you configure the connecting interface speed command to a matching speed but do not use the auto keyword.

If you specify both a duplex and speed setting other than auto on an RJ-45 interface, then autonegotiation is disabled for the interface.

You cannot set the duplex mode to half when the port speed is set at 1000 and similarly, you cannot set the port speed to 1000 when the mode is set to half duplex. In addition, if the port speed is set to auto, the duplex command is rejected.


Caution Changing the interface speed and duplex mode might shut down and reenable the interface during the reconfiguration.

Table 2-14 Relationship Between duplex and speed Commands 

duplex Command
speed Command
Resulting System Action

duplex auto

speed auto

Autonegotiates both speed and duplex mode. The interface advertises capability for the following link settings:

10 Mbps and half duplex

10 Mbps and full duplex

100 Mbps and half duplex

100 Mbps and full duplex

1000 Mbps and half duplex (Gigabit Ethernet only)

1000 Mbps and full duplex (Gigabit Ethernet only)

duplex auto

speed 10 or speed 100 or speed 1000

Autonegotiates the duplex mode. The interface advertises capability for the configured speed with capability for both half-duplex or full-duplex mode.

For example, if the speed 100 command is configured with duplex auto, then the interface advertises the following capability:

100 Mbps and half duplex

100 Mbps and full duplex

duplex half or duplex full

speed auto

Autonegotiates the speed. The interface advertises capability for the configured duplex mode with capability for both 10-Mbps or 100-Mbps operation for Fast Ethernet interfaces, and 10-Mbps, 100-Mbps, and 1000-Mbps for Gigabit Ethernet interfaces.

For example, if the duplex full command is configured with the speed auto command, then the interface advertises the following capability:

10 Mbps and full duplex

100 Mbps and full duplex

1000 Mbps and full duplex (Gigabit Ethernet interfaces only)

duplex half

speed 10

Forces 10-Mbps and half-duplex operation, and disables autonegotiation on the interface.

duplex full

speed 10

Forces 10-Mbps and full-duplex operation, and disables autonegotiation on the interface.

duplex half

speed 100

Forces 100-Mbps and half-duplex operation, and disables autonegotiation on the interface.

duplex full

speed 100

Forces 100-Mbps and full-duplex operation, and disables autonegotiation on the interface.

duplex half

speed 1000

Forces 1000-Mbps and half-duplex operation, and disables autonegotiation on the interface (Gigabit Ethernet only).

duplex full

speed 1000

Forces 1000-Mbps and full-duplex operation, and disables autonegotiation on the interface (Gigabit Ethernet only).


Examples

The following example specifies advertisement of 10 Mbps operation only, and either full-duplex or half-duplex capability during autonegotiation:

Router# configure terminal

Router(config)# interface gigabitethernet 0/1

Router(config-if)# speed 10

Router(config-if)# duplex auto

With this configuration, the interface advertises the following capabilities during autonegotiation:

10 Mbps and half duplex

10 Mbps and full duplex

Related Commands

Command
Description

duplex

Configures the duplex operation on an interface.

interface gigabitethernet

Selects a particular Gigabit Ethernet interface for configuration.

show controllers gigabitethernet

Displays Gigabit Ethernet interface information, transmission statistics and errors, and applicable MAC destination address and VLAN filtering tables.

show interfaces gigabitethernet

Displays information about the Gigabit Ethernet interfaces.


synce state master

To configure the synchronous ethernet copper port as master, use the synche state master command. Use the no form of the command to disable the configuration.

synce state master

no synce state master

Syntax Description

This command has no arguments.

Command Default

None

Command Modes

Interface configuration

Command History

Release
Modification

15.1(2)SNG

This command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The synce state master command configures the synchronous ethernet copper port as the master in the interface configuration mode.

Examples

The following command configures the ethernet copper port as master:

Router(config-if)# synce state master
 
 
 
 

Related Commands

Command
Description

synce state slave

Configures the synchronous ethernet copper port as slave.


synce state slave

To configure the synchronous ethernet copper port as slave, use the synche state slave command. Use the no form of the command to disable the configuration.

synce state slave

no synce state slave

Syntax Description

This command has no arguments.

Command Default

None.

Command Modes

Interface configuration mode.

Command History

Release
Modification

15.1(2)SNG

This command was introduced on the Cisco ASR 901 router.


Usage Guidelines

The synce state slave command configures the synchronous ethernet copper port as the slave in the interface configuration mode.

Examples

The following command configures the ethernet copper port as slave:

Router(config-if)# synce state slave
 
 

Related Commands

Command
Description

synce state master

Configures the synchronous ethernet copper port as master.


synchronous mode

To configure the ethernet interface to synchronous mode, use the synchronous mode command. Use the no form of the command to disable the configuration.

synchronous mode

no synchronous mode

Command Default

Asynchronous mode.

Command Modes

Interface configuration.

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command is applicable to Synchronous Ethernet capable interfaces. The default value is asynchronous mode.

Examples

This example configures the ethernet interface to synchronous mode:

Router(config-if)#synchronous mode

table-map

To modify metric and tag values when the IP routing table is updated with BGP learned routes, use the table-map command in address family or router configuration mode. To disable this function, use the no form of the command.

table-map map-name

no table-map map-name

Syntax Description

map-name

Route map name from the route-map command.


Defaults

This command is disabled by default.

Command Modes

Address family configuration
Router configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

This command adds the route map name defined by the route-map command to the IP routing table. This command is used to set the tag name and the route metric to implement redistribution.

You can use match clauses of route maps in the table-map command. IP access list, autonomous system paths, and next hop match clauses are supported.

Examples

In the following router configuration mode example, the Cisco IOS software is configured to automatically compute the tag value for the BGP learned routes and to update the IP routing table:

route-map tag
 match as path 10
 set automatic-tag
!
router bgp 100
 table-map tag
 
 

In the following address family configuration mode example, the Cisco IOS software is configured to automatically compute the tag value for the BGP learned routes and to update the IP routing table:

route-map tag
 match as path 10
 set automatic-tag
!
router bgp 100
address-family ipv4 unicast
 table-map tag

Related Commands

Command
Description

address-family ipv4 (BGP)

Places the router in address family configuration mode for configuring routing sessions such as BGP, RIP, or static routing sessions that use standard IP Version 4 address prefixes.

address-family vpn4

Places the router in address family configuration mode for configuring routing sessions such as BGP, RIP, or static routing sessions that use standard VPN Version 4 address prefixes.

match as-path

Matches a BGP autonomous system path access list.

match ip address

Distributes any routes that have a destination network number address that is permitted by a standard or extended access list, and performs policy routing on packets.

match ip next-hop

Redistributes any routes that have a next hop router address passed by one of the access lists specified.

route-map (IP)

Defines the conditions for redistributing routes from one routing protocol into another, or enables policy routing.


termination

Configures the DSL interface to function as central office equipment or customer premises equipment. Use the no form of this command to remove the configuration.

termination {co | cpe}

no termination {co | cpe}

Syntax Description

co

The WIC functions as central office equipment and can interface with another G.SHDSL WIC configured as cpe

cpe

The WIC functions as customer premises equipment and can interface with a DSLAM or with another G.SHDSL WIC configured as co.


Defaults

The default setting is cpe.

Command Modes

Controller configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to use the termination command:

Router# configure terminal
Router(config)# controller shdsl2/0
Router(config-controller)# equipment-type co
 
 

Related Commands

Command
Description

controller

Configures the digital subscriber line (DSL) controller.


transport ipv4

Specifies the IP version, traffic type (multicast or unicast), and interface that a PTP clock port uses to send traffic.

transport ipv4 {unicast | multicast} interface slot/port [negotiation]

no transport ipv4 {unicast | multicast} interface slot/port [negotiation]

Syntax Description

unicast

Specifies that the router sends unicast PTP traffic.

multicast

Specifies that the router sends multicast PTP traffic.

interface

Specifies the interface used to send PTP traffic.

slot/port

Backplane slot number and port number on the interface. Refer to your hardware installation manual for the specific values and slot numbers.

subslot number

Defines the subslot on the router in which the HWIC is installed.

port

Port number of the controller. Valid numbers are 0 and 1. The slash mark (/) is required between the slot argument and the port argument.

negotiation

(Optional) Enables dynamic discovery of slave devices and their preferred format for sync interval and announce interval messages.


Defaults

The IP version, transmission mode, and interface are not specified for exchanging timing packets.

Command Modes

PTP clock-port configuration mode

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Examples

The following example shows how to enable ptp priority1 value:

Router# configure terminal
Router(config)# ptp clock ordinary domain 0
Router (config-ptp-clk)# clock-port MASTER Master
Router (config-ptp-port)# transport ipv4 unicast interface loopback 23 negotiation
Router(config-ptp-port)# exit
Router(config-ptp-clk)# exit
 
 

Related Commands

Command
Description

clock-port

Specifies the mode of a PTP clock port.


tune-buffer port

To configure hardware buffer values on the port to avoid traffic drops due to congestion, use the tune-buffer port command in global configuration mode. To remove this configuration, use the no form of this command.

tune-buffer port port-no

Syntax Description

port-no

Port number associated with Gigabit Ethernet interfaces. Valid values range from 0 to 11.


Command Default

This configuration is disabled by default.

Command Modes

Global configuration (config#)

Command History

Release
Modification

15.2(2)SNI

This command was introduced.


Usage Guidelines

This command is used only on the Gigabit Ethernet interfaces. Use this command to avoid traffic drops that occur due to congestion, as a result of formation of micro loops during link recovery.

Examples

The following example shows how to avoid traffic drops:

Router# configure terminal
Router(config)# tune-buffer port 2

xconnect logging redundancy

To enable system message log (syslog) reporting of the status of the xconnect redundancy group, use the xconnect logging redundancy command in global configuration mode. To disable syslog reporting of the status of the xconnect redundancy group, use the no form of this command.

xconnect logging redundancy

no xconnect logging redundancy

Syntax Description

This command has no arguments or keywords.

Defaults

Syslog reporting of the status of the xconnect redundancy group is disabled.

Command Modes

Global configuration

Command History

Release
Modification

15.1(2)SNG

Support for this command was introduced on the Cisco ASR 901 router.


Usage Guidelines

Use this command to enable syslog reporting of the status of the xconnect redundancy group.

Examples

The following example enables syslog reporting of the status of the xconnect redundancy group and shows the messages that are generated during switchover events:

Router# config t
Router(config)# xconnect logging redundancy
Router(config)# exit

Activating the Primary Member

00:01:07: %XCONNECT-5-REDUNDANCY: Activating primary member 10.55.55.2:1000

Activating the Backup Member:

00:01:05: %XCONNECT-5-REDUNDANCY: Activating secondary member 10.55.55.3:1001

Related Commands

Command
Description

xconnect

Binds an Ethernet, 802.1q VLAN, or Frame Relay attachment circuit to an Layer 2 PW for xconnect service and enters xconnect configuration mode.