Configuring Inverse Muliplexing over ATM

This feature module describes how to configure Inverse Multiplexing over ATM (IMA) to transport ATM traffic over a bundle of T1 or E1 cables. This feature enables the expansion of WAN bandwidth from T1 speeds, without DS3 or OC3 circuits.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information for Inverse Multiplexing over ATM.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn . An account on Cisco.com is not required.

Prerequisites

Before testing any IMA implementation, you should terminate the T1 circuits end-to-end.

Restrictions

The following features are not supported:

  • Native ATM interfaces
  • IP Routing
  • VPI or VCI rewrite
  • 1:1 and N:1 (where N > 1) VCC or VPP mode
  • up and down traps
  • ATM class of service (CBR, VBR-RT, VBR-nRT, UBR+, and UBR) for VPCs and port-mode
  • Transmission of AIS on VCCs and VPCs to the customer-edge s, when the pseudowire goes down.
  • Enabling atm cell payload scrambling for T1
  • Disabling atm cell payload scrambling for E1

Information About Inverse Muliplexing over ATM

IMA involves inverse multiplexing and de-multiplexing of ATM cells in a cyclical fashion among physical links grouped to form a higher-bandwidth and logical link. Streams of cells are distributed in a round-robin manner across the multiple T1/E1 links and reassembled at the destination to form the original cell stream. Sequencing is provided using IMA Control Protocol (ICP) cells.

The following features are supported in this release:

  • AAl0 and AAL5 encapsulation

  • N:1 (where N == 1) VPC and VCC cell relay mode

  • Cell packing and Maximum Cell Packing Timeout (MCPT) timers

  • Port mode

  • AAL5 SDU frame encapsulation

How to Configure IMA

This section describes how to configure IMA on E1/T1 interface and over MPLS:

Configuring ATM IMA on T1/E1 Interface

To configure the ATM IMA on an E1 or T1 interface, complete the following steps:

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

card type {t1 | e1} slot/port

Example:


Router(config)# card type e1 0 0

Configures IMA on an E1 or T1 interface.

Step 4

controller {t1 | e1} slot/port

Example:


Router(config)# controller E1 0/4

Selects a T1 or E1 controller and enters controller configuration mode.

Step 5

ima-group ima-group-number

Example:


Router(config-controller)# ima-group 0

Assigns the interface to an IMA group. This command creates the ATM0/IMAx interface by default.

Step 6

exit

Example:


Router(config-controller)# exit

Exits the controller interface.

Step 7

interface ATMslot/IMAgroup-number

Example:


Router(config-if)# interface ATM0/IMA0

Specifies the slot location and port of IMA interface group.

  • ATMslot —Specifies the slot location of the ATM IMA port adapter.
  • ATMgroup-number —Specifies the group number of the IMA group.

Step 8

no ip address

Example:


Router(config-if)# no ip address

Disables the IP address configuration for the physical layer interface.

Step 9

atm bandwidth dynamic

Example:


Router(config-if)# atm bandwidth dynamic

Specifies the ATM bandwidth as dynamic.

Step 10

no atm ilmi-keepalive

Example:


Router(config-if)# no atm ilmi-keepalive

Disables the Interim Local Management Interface (ILMI) keepalive parameters.

Configuring ATM IMA over MPLS

This service allows the Cisco ASR 901 router to deliver ATM services over an existing MPLS network. The following sections describe how to configure transportation of service using ATM over MPLS:

Configuring the T1/E1 Controller

Complete the following steps to configure an E1 or T1 controller:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

card type {t1 | e1} slot port

Example:

Router(config)# card type e1 0 0

Configures the IMA on an E1 or T1 interface.

Step 4

controller {t1 | e1} slot/port

Example:

Router(config)# controller E1 0/4

Selects a T1 or E1 controller and enters controller configuration mode.

Step 5

clock source internal

Example:

Router(config-controller)# clock source internal

Sets the clock source to internal.

Step 6

ima-group group-number

Example:

Router(config-controller)# ima-group 0

Specifies the group number for the controller.

Configuring an ATM IMA Interface

Complete the following steps to configure an ATM IMA interface:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

controller {t1 | e1} slot/port

Example:

Router(config)# controller E1 0/4

Selects a T1 or E1 controller and enters controller configuration mode.

Step 4

interface ATMslot/IMAgroup-number

Example:

Router(config-controller)# interface ATM0/IMA0

Specifies the slot location and port of IMA interface group.

  • ATMslot/ —Specifies the slot location of the ATM IMA port adapter.
  • /IMAgroup-number —Specifies the group number of the IMA group.

Step 5

no ip address

Example:

Router(config-if)# no ip address

Disables the IP address configuration for the physical layer interface.

Step 6

atm bandwidth dynamic

Example:

Router(config-if)# atm bandwidth dynamic

Specifies the ATM bandwidth as dynamic.

Step 7

no atm ilmi-keepalive

Example:

Router(config-if)# no atm ilmi-keepalive

Disables the ILMI keepalive parameters.

Configuring ATM over MPLS Pseudowire Interface

You can configure ATM over MPLS in the following modes:

Configuring a Port Mode Pseudowire

A port mode pseudowire allows you to map an entire ATM interface to a single pseudowire connection. To configure, complete the following steps:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface atm0/ima0

Specifies the slot location and port of IMA interface group and configures the ATM interface.

  • ATMslot —Specifies the slot location of the ATM IMA port adapter.
  • IMAgroup-number —Specifies the group number of the IMA group.

Step 4

xconnect ip-address port-number encapsulation mpls

Example:

Router(config-if)# xconnect 10.10.10.10 20 encapsulation mpls

Binds an attachment circuit to the ATM IMA interface to create a pseudowire.

Configuring an N-to-1 VCC Cell Mode

An N-to-1 Virtual Channel Connection (VCC) pseudowire allows you to map a ATM VCC to a pseudowire. You must use an ATM adaptation layer (AAL) encapsulation for this transport type. To configure, complete the following steps:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface ATM0/IMA0

Specifies the slot location and port of IMA interface group and configures the ATM interface.

  • ATMslot —Specifies the slot location of the ATM IMA port adapter.
  • ATMgroup-number —Specifies the group number of the IMA group.

Step 4

pvc VPI/VCI l2transport

Example:

Router(config-if)# 100/12 l2transport

Specifies the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) of the Permanent Virtual Circuit (PVC) and configures them in layer 2 transport mode.

Step 5

encapsulation encapsulation-type

Example:

Router(config-if-atm-l2trans-)# encapsulation aal0

Sets the encapsulation type to AAL0

Step 6

xconnect ip-address port-number encapsulation mpls one-to-one

Example:

Router(config-if-atm-l2trans-)# xconnect 25.25.25.25 125 encapsulation mpls

Binds an attachment circuit to the ATM IMA interface to create a pseudowire.

Configuring an N-to-1 vPC Cell Mode

An N-to-1 virtual port channel (vPC) pseudowire allows you to map one or more vPCs to a single pseudowire. You must use ATM Adaptation Layer (AAL) encapsulation for this transport type. To configure, complete the following steps:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface ATM0/IMA0

Specifies the slot location and port of IMA interface group and configures the ATM interface.

  • ATMslot —Specifies the slot location of the ATM IMA port adapter.
  • IMAgroup-number —Specifies the group number of the IMA group.

Step 4

atm pvp VPI l2transport

Example:

Router(config-if)# atm pvp 10 l2transport

Specifies the VPI of the PVP and configures the PVP in L2transport mode.

Step 5

xconnect ip-address port-number encapsulation mpls one-to-one

Example:

Router(config-if-atm-l2trans-pvp)# xconnect 30.30.30.2 305 encapsulation mpls

Binds an attachment circuit to the ATM IMA interface to create a pseudowire.

ATM AAL5 SDU VCC Transport

An ATM AAL5 SDU VCC transport pseudowire maps a single ATM to another ATM. You must use AAL5 encapsulation for this transport type. Complete the following steps to configure an ATM AAL5 SDU VCC transport pseudowire:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface ATM0/IMA0

Specifies the slot location and port of IMA interface group.

  • slot —Specifies the slot location of the ATM IMA port adapter.
  • group-number —Specifies the group number of the IMA group.

Step 4

VPI/VCI l2transport

Example:

Router(config-if)# 100/12 l2transport

Specifies the VPI and VCI and configures them in layer 2 transport mode.

Step 5

encapsulation encapsulation-type

Example:

Router(config-if-atm-l2trans-)# encapsulation aal5

Sets the encapsulation type to AAL5. AAL5 is the default l2transport encapsulation for the VCC mode.

Step 6

xconnect ip-address port-number encapsulation mpls

Example:

Router(config-if-atm-l2trans-)# xconnect 25.25.25.25 125 encapsulation mpls

Binds an attachment circuit to the ATM IMA interface to create a pseudowire.

Verifying IMA Configurations

To verify the IMA configurations, use the show ima interface command. 


Router# show ima interface ATM0/IMA3
ATM0/IMA3 is up, ACTIVATION COMPLETE
Slot 0 Slot Unit 0 unit 3, CTRL VC -1, Vir -1, VC -1
IMA Configured BW 3022, Active BW 3022
IMA version 1.0, Frame length 64
Link Test: Disabled
Auto-Restart: Disabled
ImaGroupState: NearEnd = operational, FarEnd = operational
ImaGroupFailureStatus = noFailure
IMA Group Current Configuration:
ImaGroupMinNumTxLinks = 1 ImaGroupMinNumRxLinks = 1
ImaGroupDiffDelayMax = 200 ImaGroupNeTxClkMode = independent(itc)
ImaGroupFrameLength = 64 ImaTestProcStatus = disabled
ImaGroupTestLink = None ImaGroupTestPattern = 0xFF
ImaGroupConfLink = 2 ImaGroupActiveLink = 2
IMA Link Information:
ID Link Link State - Ctlr/Chan/Prot Test Status Scrambling
---- -------------- ------------------------------ --------------- ------------
0 T1 0/0 Up Up Up Up disabled Off
1 T1 0/1 Up Up Up Up disabled Off

How to Configure ATM Class of Service

This section describes how to configure ATM class of services:

Configuring Constant Bit Rate

Complete the following steps to configure Constant Bit Rate (CBR) QoS class for an ATM PVC and to specify the bandwidth on the Cisco ASR 901 series router.

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:


Router(config)# interface ATM1/IMA0

Configures an ATM interface and enters the interface configuration mode.

Step 4

pvc VPI/VCI l2transport

Example:


Router(config-if)# 100/12 l2transport

Specifies the VPI and VCI of the PVC and configures the PVC in Layer 2 transport mode.

  • l2transport is an optional keyword.

Step 5

cbr rate

Example:


Router(config-if-atm-vc)# cbr 16000

Configures the constant bit rate (CBR) QoS class for an ATM permanent virtual circuit () and specifies the bandwidth.

  • rate —Peak cell rate in Kbps.

Configuring Unspecified Bit Rate

Complete the following steps to configure Unspecified Bit Rate (UBR) QoS class for an ATM permanent virtual circuit () and to specify the bandwidth on the Cisco ASR 901 series Router.

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:


Router(config)# interface ATM1/IMA0

Configures an ATM interface and enters the interface configuration mode.

Step 4

pvc VPI/VCI l2transport

Example:


Router(config-if)# pvc 100/12 l2transport

Specifies the VPI and VCI of the PVC and configures the PVC in layer 2 transport mode.

  • l2transport is an optional field.

Step 5

ubr rate

Example:


Router(config-if-atm-vc)# ubr 16000

Configures the UBR QoS class for an ATM permanent virtual circuit (PVC) and specifies the bandwidth. By default a value is set to UBR ATM class of service with the rate equal to the bandwidth of the IMA interface, which in turn is a product of the number of active IMA links and the bandwidth of each link.

  • rate —Peak cell rate in Kbps.

Configuring Unspecified Bit Rate Plus

Complete the following steps to configure Unspecified Bit Rate Plus (UBR+) QoS class for an ATM permanent virtual circuit () and to specify the bandwidth on the Cisco ASR 901 series Router.

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:


Router(config)# interface ATM1/IMA0

Configures an ATM interface and enters the interface configuration mode.

Step 4

pvc VPI/VCI l2transport

Example:


Router(config-if)# pvc 100/12 l2transport

Specifies the VPI and VCI of the PVC and configures the PVC in layer 2 transport mode.

  • l2transport is an optional field.

Step 5

ubr+ pcr-rate mcr-rate

Example:


Router(config-if-atm-vc)# ubr+ 16000 2000

Configures the UBR+ QoS class for an ATM permanent virtual circuit () and specifies the bandwidth.

  • pcr-rate —Peak cell rate in Kbps.
  • mcr-rate—Peak cell rate in Mbps

Configuring Variable Bit Rate for Real/Non-Real Time Traffic

Complete the following steps to configure the real/non-real time Variable Bit Rate for VoATM voice connections for an ATM on the Cisco ASR901 series Router.

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:


Router(config)# interface ATM1/IMA0

Configures an ATM interface and enters the interface configuration mode.

Step 4

pvc VPI/VCI l2transport

Example:


Router(config-if)# pvc 100/12 l2transport

Specifies the VPI and VCI of the PVC and configures the PVC in layer 2 transport mode.

  • l2transport is an optional field.

Step 5

Do one of the following:

  • vbr-rt peak-rate average-rate burst
  • vbr-nrt peak-rate average-rate burst

Example:


Router(config-if-atm-vc)# vbr-rt 600 300 37

Example:

Example:


Router(config-if-atm-vc)# vbr-nrt 600 300 37

Configures the real-time VBR for VoATM voice connections for an ATM in virtual circuit configuration mode.

Configures the non-real time VBR for VoATM voice connections for an ATM in virtual circuit configuration mode.

  • peak-rate —Peak cell rate in Kbps.
  • average-rate—Average cell rate in Kbps.
  • burst—Burst cell size in number of cells. Minimum cell size is 37.

Configuration Examples

This section provides sample configuration examples for IMA on the Cisco ASR 901 Router:

Example: Creating an IMA Interface

The following is a sample configuration to create an IMA interface with T1 controller. 


!
controller t1 0/0
	ima-group 0
exit
!

The following is a sample configuration to create an IMA interface with E1 controller. 


controller e1 0/0
	ima-group 0
exit
!

Example: Configuring a Port Mode Pseudowire


The following is a sample configuration of a port mode pseudowire.
!
interface ATM0/IMA2
	no ip address
	xconnect 10.10.10.10 20 encapsulation mpls
!

Example: Configuring an N-to-1 VCC Cell Mode


The following is a sample configuration of N-to-1 VCC cell mode:
!
interface ATM0/IMA0
	no ip address
	atm mcpt-timers 500 600 700
	no atm enable-ilmi-trap
	 100/100 l2transport
		cell-packing 10 mcpt-timer 2
		encapsulation aal0
		xconnect 25.25.25.25 125 encapsulation mpls
!

The following is a sample configuration for AAL5 SDU mode: 


!
interface ATM0/IMA0
	no ip address
	no atm enable-ilmi-trap
	 100/100 l2transport
		encapsulation aal5
		xconnect 25.25.25.25 125 encapsulation mpls
!

Example: Configuring an N-to-1 VPC Cell Mode


The following is a sample configuration of N-to-1 Permanent Virtual Circuit (VPC) cell mode.
!
interface ATM0/IMA0
	no ip address
	atm pvp 12 l2transport
	xconnect 30.30.30.30 30 encapsulation mpls
!

Example: Configuring CBR

The following is a sample configuration of constant bit rate. 


!
interface atm0/ima0
	 1/200 l2transport
		cbr 16000
!

Example: Configuring UBR

The following is a sample configuration of constant bit rate. 


!
interface atm0/ima0
	 1/200 l2transport
		ubr 16000
!

Example: Configuring UBR Plus


!
interface atm0/ima0
	 1/200 l2transport
		ubr+ 16000 2000
!

Example: Configuring VBR for Real Time Traffic


!
interface atm0/ima0
	 1/200 l2transport
		vbr-rt 10000 5000 37
!

Example: Configuring VBR for Non-Real Time Traffic


!
interface atm0/ima0
	 1/200 l2transport
		vbr-nrt 10000 5000 50
!

Configuring Marking MPLS Experimental Bits

You can configure MPLS through the following procedures:

Creating a Policy-map for PVP/PVC/ATM IMA Interface

To configure a policy map, complete the following steps:

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

policy-map policy-map-name

Example:


Router(config)# policy-map mark_qosgroup

Specifies a name for the policy map.

Step 4

class class-name

Example:


Router(config-if)# class class-default

Specifies a name for the class associated with the policy map.

Step 5

set qos-group qos-group-number

Example:


Router(config-if)# set qos-group 2

Sets a group to the policy map.

Applying the Policy-map

You can apply a policy map on the following interfaces:

Applying a Policy map on PVC and PVP

To apply a policy map on PVC and PVP, complete the following steps:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface atm0/ima0

Specifies the slot location and port of IMA interface group and configures the ATM interface.

  • slot —Specifies the slot location of the ATM IMA port adapter.
  • group-number —Specifies the group number of the IMA group.

Step 4

no ip address

Example:

Router(config-if)# no ip address

Disables the IP address configuration for the physical layer interface.

Step 5

no atm enable-ilmi-trap

Example:

Router(config-if)# no atm enable-ilmi-trap

Disables the ILMI trap parameters.

Step 6

pvc VPI/VCI l2transport

Example:

Router(config-if)# pvc 100/100 l2transport

Specifies the VPI and VCI of the PVC and configures the PVC in layer 2 transport mode.

Step 7

encapsulation encapsulation-type

Example:

Router(config-if)# encapsulation aal0

Sets the PVC encapsulation type to AAL0.

Step 8

service-policy input policy-map-name

Example:

Router(config-if)# service-policy input mark_qosgroup

Attaches a policy map to the input interface.

Step 9

xconnect ip-address port-number encapsulation mpls

Example:

Router(config-if)# xconnect 25.25.25.25 125 encapsulation mpls

Binds an attachment circuit to the ATM IMA PVC to create a pseudowire.

Step 10

atm pvp VPI l2transport

Example:

Router(config-if)# atm pvp 200 l2transport

Specifies the VPI of the PVP and configures the PVP in layer 2 transport mode.

Step 11

service-policy input policy-map-name

Example:

Router(config-if)# service-policy input mark_qosgroup

Attaches a policy map to the input interface.

Step 12

xconnect ip-address port-number encapsulation mpls

Example:

Router(config-if)# xconnect 25.25.25.25 126 encapsulation mpls

Binds an attachment circuit to the ATM IMA PVP to create a pseudowire.

Applying a Policy map on ATM IMA Interface

To apply a policy map on ATM IMA interface, complete the following steps:

Procedure
  Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters the global configuration mode.

Step 3

interface ATMslot/IMAgroup-number

Example:

Router(config)# interface atm0/ima0

Specifies the slot location and port of IMA interface group and configures the ATM interface.

  • slot —Specifies the slot location of the ATM IMA port adapter.
  • group-number —Specifies the group number of the IMA group.

Step 4

no ip address

Example:

Router(config-if)# no ip address

Disables the IP address configuration for the physical layer interface.

Step 5

no atm enable-ilmi-trap

Example:

Router(config-if)# no atm enable-ilmi-trap

Disables the ILMI trap parameters.

Step 6

service-policy input policy-map-name

Example:

Router(config-if)# service-policy input mark_qosgroup

Attaches a policy map to the input interface.

Step 7

xconnect ip-address port-number encapsulation mpls

Example:

Router(config-if)# xconnect 25.25.25.25 125 encapsulation mpls

Binds an attachment circuit to the ATM IMA interface to create a pseudowire.

Creating a Table-map

To create a table map for mapping QoS group to MPLS experimental bit, complete the following steps:

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

table-map table-name

Example:


Router(config)# table-map qos_exp_table

Creates a table map with the specified name.

Step 4

map from from-value to to-value

Example:


Router(config-if)# map from 1 to 2

Maps the values associated with the policy map.

Creating a Policy-map for SVI Interface

To create a policy-map, complete the following steps:

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables the privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

policy-map map-name

Example:


Router(config)# policy-map pmap_qos_exp

Specifies the name of the existing policy map.

Step 4

class class-default

Example:


Router(config)# class class-default

Specifies the name of the class associated with the policy map.

Step 5

set mpls experimental topmost qos-group table table-map-name

Example:


Router(config-if)# set mpls experimental topmost qos-group table qos_exp_table

Copies the MPLS EXP value in the incoming MPLS traffic to the Qos group table.

Applying a Service Policy on SVI Interface

To apply a service policy on SVI interface, complete the following steps:

Procedure

  Command or Action Purpose

Step 1

enable

Example:


Router> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface interface-type

Example:


Router(config)# interface vlan10

Specifies the interface type and enters the interface configuration mode.

Step 4

mtu bytes

Example:


Router(config-if)# mtu 9216

Configures the IP maximum transmission unit (MTU) size for the tunnel.

  • bytes —The range is from 1500 to 9216. The default is 1500.

Step 5

ip address ip-address subnet-mask

Example:


Router(config-if)# ip address 9.0.54.9 255.255.255.0

Configures an IP address and subnet mask on the interface.

Step 6

mpls ip

Example:


Router(config-if)# mpls ip

Enables MPLS forwarding of IPv4 packets along normally routed paths for the interface.

Step 7

service-policy output policy-map-name

Example:


Router(config-if)# service-policy output pmap_qos_exp

Attaches the specified policy map to the output interface.

Additional References

The following sections provide references related to inverse multiplexing over ATM.

Related Documents

Related Topic

Document Title

Cisco IOS Commands

Cisco IOS Master Commands List, All Releases

Cisco ASR 901 Command Reference

Cisco ASR 901 Series Aggregation Services Router Command Reference

Cisco IOS Interface and Hardware Component Commands

Cisco IOS Interface and Hardware Component Command Reference

Standards

Standard

Title

None

—

MIBs

MIB

MIBs Link

IMA-MIB

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

None

—

Technical Assistance

Description

Link

The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

http://www.cisco.com/techsupport

Feature Information for Inverse Multiplexing over ATM

Table 1 lists the features in this module and provides links to specific configuration information.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn . An account on Cisco.com is not required.


Note
Table 1 lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Table 1. Feature Information for Inverse Multiplexing over ATM

Feature Name

Releases

Feature Information

Inverse Multiplexing over ATM

15.2(2)SNH1

This feature was introduced. See the following links for more information about this feature: