Table Of Contents
Cisco NX-OS Interfaces Commands
bandwidth (interface)
beacon
carrier-delay
channel-group
clear counters interface
clear lacp counters
clear vpc statistics
delay
delay restore
description
dual-active exclude interface-vlan
duplex
encapsulation dot1Q
errdisable detect cause
errdisable recovery cause
errdisable recovery interval
feature interface-vlan
feature lacp
feature tunnel
feature udld
feature vpc
flowcontrol
inherit port-profile
interface cmp-mgmt module
interface ethernet
interface loopback
interface mgmt
interface port-channel
interface tunnel
interface vlan
lacp graceful-convergence
lacp port-priority
lacp suspend-individual
lacp system-priority
link debounce
load-interval
max-ports
mdix auto
medium
mtu
peer-gateway
peer-keepalive destination
port-channel load-balance ethernet
port-profile
rate-mode dedicated
rate-mode shared
role priority
show interface
show interface brief
show interface capabilities
show interface counters
show interface counters errors
show interface counters storm-control
show interface counters trunk
show interface debounce
show interface description
show interface ethernet
show interface flowcontrol
show interface mgmt
show interface port-channel
show interface port-channel counters
show interface status
show interface switchport
show interface transceiver
show interface transceiver
show interface trunk
show interface tunnel
show lacp counters
show lacp interface
show lacp neighbor
show lacp port-channel
show lacp system-identifier
show port-channel capacity
show port-channel compatibility-parameters
show port-channel database
show port-channel load-balance
show port-channel rbh-distribution
show port-channel summary
show port-channel traffic
show port-channel usage
show port-profile
show running-config interface
show running-config interface mgmt
show running-config vpc
show startup-config interface
show startup-config vpc
show udld
show vpc brief
show vpc consistency-parameters
show vpc orphan-ports
show vpc peer-keepalive
show vpc role
show vpc statistics
shutdown
speed
state enabled
switchport
switchport access vlan
switchport host
switchport mode
switchport trunk allowed vlan
switchport trunk native vlan
system default switchport
system jumbomtu
system-mac
system-priority
track
tunnel destination
tunnel mode
tunnel path-mtu-discovery
tunnel source
tunnel use-vrf
tunnel ttl
udld
udld aggressive
udld message-time
udld reset
vlan dot1q tag native
vpc
vpc domain
vpc peer-link
Cisco NX-OS Interfaces Commands
This chapter describes the Cisco NX-OS interfaces commands.
bandwidth (interface)
To set the inherited and received bandwidth values for an interface, use the bandwidth command in interface configuration mode. To restore the default values, use the no form of this command.
bandwidth {kbps | inherit [kbps]}
no bandwidth {kbps | inherit [kbps]}
Syntax Description
kbps
|
Intended bandwidth, in kilobits per second. Valid values are 1 to 10000000.
|
inherit
|
(Optional) Specifies the inherited bandwidth such as how a subinterface inherits the bandwidth of its main interface.
|
Defaults
1000000 kbps
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The bandwidth command sets an informational parameter to communicate only the current bandwidth to the higher-level protocols; you cannot adjust the actual bandwidth of an interface using this command.
Note This is a routing parameter only. It does not affect the physical interface.
The bandwidth inherit command controls how a subinterface inherits the bandwidth of its main interface.
The no bandwidth inherit command enables all subinterfaces to inherit the default bandwidth of the main interface, regardless of the configured bandwidth. If a bandwidth is not configured on a subinterface, and you use the bandwidth inherit command, all subinterfaces will inherit the current bandwidth of the main interface. If you configure a new bandwidth on the main interface, all subinterfaces will use this new value.
If you do not configure a bandwidth on the subinterface and you configure the bandwidth inherit command on the main interface, the subinterfaces will inherit the specified bandwidth.
In all cases, if an interface has an explicit bandwidth setting configured, then that interface will use that setting, regardless of whether the bandwidth inheritance setting is in effect.
This command does not require a license.
Examples
This example shows how to configure all subinterfaces off this main interface to inherit the configured bandwidth:
switch(config-if)# bandwidth inherit 30000
Related Commands
Command
|
Description
|
show interface
|
Displays the interface configuration information.
|
beacon
To enable the beacon mode for an interface, use the beacon command. To disable the beacon mode for an interface, use the no form of this command.
beacon
no beacon
Syntax Description
This command has no arguments or keywords.
Command Default
Disabled
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The beacon mode allows you to identify a physical port by flashing its link-state LED with a green light. To identify the physical port for an interface, you activate the beacon parameter for the interface.
This command does not require a license.
Examples
This example shows how to enable the beacon mode for the Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# beacon
Related Commands
Command
|
Description
|
show interface
|
Displays the interface status, which includes the beacon mode state.
|
carrier-delay
To set the carrier delay on an interface, use the carrier-delay command. To return to the default carrier delay value, use the no form of this command.
carrier-delay {sec | {msec value}}
no carrier-delay
Syntax Description
sec
|
Seconds of delay. The range of values is from 0 to 60.
|
value
|
Milliseconds of delay. The range of values is from 0 to 1000.
|
Defaults
The default is 2 seconds or 100 milliseconds.
Command Modes
Interface
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0(3)
|
This command was introduced.
|
Usage Guidelines
Note You must enable the VLAN interface feature, using the feature interface-vlan command, before you can use this command.
If a link goes down and comes back up before the carrier delay timer expires, the down state is effectively filtered, and the rest of the software on the device is not aware that a link-down event occurred. A large carrier delay timer results in fewer link-up/link-down events being detected. When you set the carrier delay time to 0, the device detects each link-up/link-down event that occurs.
Note The carrier-delay command is supported only on the VLAN interface mode; no other interface modes support this command.
In most environments, a lower carrier delay time is better than a higher one. The exact value that you choose depends on the nature of the link outages and how long you expect these linkages to last in your network. If your data links are subject to short outages (especially if those outages last less time than it takes for your IP routing to converge) you should set a long carrier delay value to prevent these short outages from causing unnecessary churn in your routing tables. However, if you outages tend to be longer, then you may want to set a shorter carrier delay time so that the outages are detected sooner, and the IP route convergence begins and ends sooner.
This command does not require a license.
Examples
This example shows how to set the carrier delay timer to 20 minutes for VLAN 6:
switch(config)# interface vlan 6
switch(config-if)# carrier-delay 20
Related Commands
Command
|
Description
|
show interface vlan
|
Displays information about VLAN interfaces.
|
channel-group
To assign and configure a physical interface to a port-channel group, use the channel-group command. To remove the channel-group configuration from the interface, use the no form of this command.
channel-group number [force] [mode {active | on | passive}]
no channel-group [number]
Syntax Description
number
|
Number of channel group. Maximum number of port channels that can be configured is 256 across all VDCs, and the range of values is from 1 to 4096.
|
force
|
Forces the interface to join the channel group, although some parameters are not compatible. See Usage Guidelines below for information on the compatibility parameters and which ones can be forced.
|
mode
|
Specifies the port-channel mode of the interface.
|
on
|
This is the default channel mode, and all port channels that are not running LACP remain in this mode. If you attempt to change the channel mode to active or passive before enabling LACP, the device returns an error message. After you enable LACP globally, by using the feature lacp command, you enable LACP on each channel by configuring the channel mode as either active or passive. An interface in this mode does not initiate or respond to LACP packets. When an LACP attempts to negotiate with an interface in the on state, it does not receive any LACP packets and becomes an individual link with that interface; it does not join the channel group.
The default mode is on.
|
active
|
Specifies that when you enable the Link Aggregation Control Protocol (LACP), this command enables LACP on the specified interface. Interface is in active negotiating state, in which the port initiates negotiations with other ports by sending LACP packets.
|
passive
|
Specifies that when you enable LACP, this command enables LACP only if an LACP device is detected.The interface is in a passive negotiation state, in which the port responds to LACP packets that it receives but does not initiate LACP negotiation.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use this command to create a channel group that includes the interface that you are working on and to add or remove specific interfaces from the channel group. Use this command to move a port from one channel group to another. You enter the channel group that you want the port to move to; the device automatically removes the specified from its present channel group and adds that port to the specified channel group.
After you enable LACP globally, by using the feature lacp command, you enable LACP on each channel by configuring the channel mode as either active or passive. A port channel in the on channel mode is a pure port channel and can aggregate a maximum of eight ports. It does not run LACP.
You cannot change the mode for an existing port channel or any of its interfaces if that port channel is not running LACP; the channel mode remains as on. The system returns an error message if you try.
All ports in one port channel must be in the same virtual device context (VDC). With LACP enabled, this requirement applies to the possible eight active ports and the possible eight standby ports. The port channels can originate in one VDC (with all ports in that channel in the same VDC) and partner with a port channel in another VDC (again, all ports in that channel must be in that VDC).
Use the no form of this command to remove the physical interface from the port channel. When you delete the last physical interface from a port channel, the port channel remains. To delete the port channel completely, use the no form of this interface port-channel command.
The compatibility check includes the following operational attributes:
•Network layer
•(Link) speed capability
•Speed configuration
•Duplex capability
•Duplex configuration
•Port mode
•Access VLAN
•Trunk native VLAN
•Tagged or untagged
•Allowed VLAN list
•MTU size
•SPAN—cannot be SPAN source or destination port
•Layer 3 ports cannot have subinterfaces.
•Storm control
•Flow control capability
•Flow control configuration
Use the show port-channel compatibility-parameters command to see the full list of compatibility checks that the Cisco NX-OS uses.
You can only add interfaces configured with the channel mode set to on to static port channels, that is without a configured aggregation protocol. And you can only add interfaces configured with the channel mode as active or passive to port channels that are running LACP.
You can configure these attributes on an individual member port. If you configure a member port with an incompatible attribute, Cisco NX-OS suspends that port in the port channel.
Alternatively, you can force ports with incompatible parameters to join the port channel as long the following parameters are the same:
•(Link) speed capability
•Speed configuration
•Duplex capability
•Duplex configuration
•Flow control capability
•Flow control configuration
When the interface joins a port channel, some of its individual parameters are removed and replaced with the values on the port channel, as follows:
•Bandwidth
•Delay
•Extended Authentication Protocol over UDP
•VRF
•IP address (v4 and v6)
•MAC address
•Spanning Tree Protocol
•NAC
•Service policy
•Quality of Service (QoS)
•ACLs
Also, many interface parameters remain unaffected with the interface joins or leaves a port channel, as follows:
•Beacon
•Description
•CDP
•LACP port priority
•Debounce
•UDLD
•MDIX
•Rate mode
•Shutdown
•SNMP trap
If subinterfaces are configured for the port-channel interface and a member port is removed from the port channel, the configuration of the port-channel subinterface is not propagated to the member ports.
Any configuration changes that you make in any of the compatibility parameters 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).
You do not have to create a port-channel interface before you assign 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 can create either a Layer 2 or a Layer 3 port channel 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 run time or dynamically.
This command does not require a license.
Examples
This example shows how to add an interface to LACP channel group 5 in active mode:
switch(config-if)# channel-group 5 mode active
Related Commands
Command
|
Description
|
show interface port-channel
|
Displays information about the traffic on the specified port-channel interface.
|
show port-channel summary
|
Displays information on the port channels.
|
show lacp
|
Displays LACP information.
|
clear counters interface
To clear the interface counters, use the clear counters interface command.
clear counters interface {all | ethernet slot/port | loopback number | mgmt number | port-channel
channel-number | tunnel tunnel-number | vlan vlan-number}
Syntax Description
all
|
Clear all interface counters
|
ethernet slot/port
|
Clear Ethernet interface counter for the slot number and port number specified.
|
loopback number
|
Clear loopback interface counter for the virtual interface number specified. The loopback range is from 0 to 1023.
|
mgmt number
|
Clear Management interface counter for the number specified. The number is 0.
|
port- channel channel- number
|
Clear port-channel interface for the number specified. The range is from 1 to 4096.
|
tunnel tunnel- number
|
Clear port-channel interface for the number specified. The range is from 0 to 65535.
|
vlan vlan- number
|
Clear port-channel interface for the number specified. The range is from 1 to 4096.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to clear and reset the counters on Ethernet port 5/5:
switch# clear counters interface ethernet 5/5
Related Commands
Command
|
Description
|
show interface counters
|
Displays in and out counters for all interfaces in the system.
|
clear lacp counters
To clear the statistics for all interfaces for Link Aggregation Control Protocol (LACP) groups, use the clear lacp counters command.
clear lacp counters [interface port-channel channel-number]
Syntax Description
channel-number
|
(Optional) LACP port-channel number. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you enter this command for a static port-channel group, without the aggregation protocol enabled, the device ignores the command.
If you do not specify a channel number, the LACP counters for all LACP port groups are cleared.
This command does not require a license.
Examples
This example shows how to clear all the LACP counters:
switch(config)# clear lacp counters
This example shows how to clear all LACP counters for the LACP port-channel group 20:
switch(config)# clear lacp counters interface port-channel 20
Related Commands
Command
|
Description
|
show lacp counters
|
Displays information about LACP statistics.
|
clear vpc statistics
To clear virtual port-channel (vPC) statistics, use the clear vpc statistics command.
clear vpc statistics {all | peer-keepalive | peer-link | vpc number}
Syntax Description
all
|
Clears all vPC statistics on the local vPC peer device.
|
peer-keepalive
|
Clears the vPC peer-keepalive statistics on the local vPC peer device.
|
peer-link
|
Clears statistics on the local vPC peer device.
|
vpc number
|
Clears vPC statistics on the specified vPC. The range is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
Use the clear vpc statistics command to clear the vPC statistics. If the feature is not enabled, this command is unavailable.
The clear vpc statistics peer-link and clear vpc statistics vpc number commands are redirected to the appropriate port channel and the clear statistics port-channel channel-number command.
This command does not require a license.
Examples
This example shows how to clear the statistics for vPC 10:
switch(config)# clear vpc statistics vpc 10
Related Commands
Command
|
Description
|
show vpc statistics
|
Displays vPC statistical information on vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
delay
To configure the interface throughput delay for Ethernet interfaces, use the delay command. To remove the configured throughput delay, use the no form of this command.
delay value
no delay
Syntax Description
value
|
Specify the delay time in tens of microseconds. You can set an informational value range between 1 and 16777215 tens of microseconds.
|
Command Default
10 microseconds for all interfaces except loopback ports
5000 microseconds for loopback ports
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Beginning with Cisco NX-OS Release 4.2(1) for the Cisco Nexus 7000 Series devices, the default delay values are changed. Prior to this release, all the default delay value for all interfaces was 100 microseconds.
Note After upgrading from an older release, when you enter the show running command on a VLAN interface, the display shows an additional configuration of delay 100. If you want to revert the delay value to the new default, enter the no delay command for that VLAN interface.
Specifying a value for the throughput delay provides a value for use by Layer 3 protocols; it does not change the actual throughput delay of an interface.
This command does not require a license.
Examples
This example shows how to configure the throughput-delay time to 100,000 microseconds for the slot 3 port 1 Ethernet interface:
switch(config)# interface ethernet 3/1
switch(config-if)# delay 10000
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface, which includes the delay parameter.
|
delay restore
To delay the vPC coming up on the restored vPC peer device after a reload and after the peer adjacency is established and the VLAN interfaces are back up, use the delay restore command. To return to the default value, use the no form of the command.
delay restore seconds
no delay restore seconds
Syntax Description
seconds
|
Seconds to delay bringing up the restored vPC peer device. The range is from 1 to 3600.
|
Defaults
30 seconds
Command Modes
vpc-domain command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the delay restore command to avoid upstream traffic from the access device to the core from being dropped when you restore the vPC peer devices. Sometimes, the restored vPCs may come up before the routing tables are converged, and you may see packet drops.
The delay restore command delays bringing up the vPC after the peer adjacency has formed and VLAN interface are up on the restored device after a reload to let the routing protocols converge.
This command does not require a license.
Examples
This example shows how to configure the delay reload:
switch(config)# vpc domain 5
switch(config-vpc-domain)# delay restore 40
Related Commands
Command
|
Description
|
feature vpc
|
Enables vPC configuration on the device.
|
description
To provide textual interface descriptions for the Ethernet and management interfaces, use the description command. To remove the description, use the no form of the command.
description text
Syntax Description
text
|
Specify the description for the interface you are configuring. The maximum is 80 characters.
|
Command Default
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You use the description command to provide textual interface descriptions. Descriptions can be a maximum of 80 case-sensitive alphanumeric characters.
This command does not require a license.
Examples
This example shows how to add the description server1 to the Ethernet interface on slot 5, port 2:
switch(config)# interface ethernet 5/1
switch(config-if)# description server1
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface, which includes the description parameter.
|
dual-active exclude interface-vlan
To ensure that certain VLAN interfaces are not shut down on the virtual port-channel (vPC) secondary peer device when the vPC peer link fails for those VLANs carried on the vPC peer link but not on the vPC configuration itself, use the dual-active exclude interface-vlan command. To return to the default value, use the no form of this command.
dual-active exclude interface-vlan {range}
no dual-active exclude interface-vlan {range}
Syntax Description
range
|
Range of VLAN interfaces that you want to exclude from shutting down. The range is 1 to 4094.
|
Command Default
None
Command Modes
vpc-domain configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the dual-active exclude interface-vlan command to ensure that those VLAN interfaces on the vPC secondary peer device that are carried on the vPC peer link but not by the vPC configuration itself do not go down if the vPC peer link fails. The VLAN interfaces must have already been configured.
Note We do not recommend configuring an interface-VLAN exclude for a VLAN carried on a vPC because this may cause packed losses on dual-active devices if the interface-VLAN still attracts Layer 3 traffic while the vPC primary device and the vPC peer link are down.
This command does not require a license.
Examples
This example shows how to configure the device to keep the VLAN interfaces up on the vPC peer devices if the peer link fails:
switch(config)# vpc-domain 5
switch(config-vpc-domain)# dual-active exclude interface-vlan 10
Related Commands
Command
|
Description
|
vpc-domain
|
Configures a vPC domain and enters the vpc-domain configuration mode.
|
duplex
To specify the duplex mode as full, half, or autonegotiate, use the duplex command. To return the system to default mode, use the no form of this command.
duplex {full | half | auto}
no duplex {full | half | auto}
Syntax Description
full
|
Specify the duplex mode as full.
|
half
|
Specify the duplex mode as half.
|
auto
|
Specify the duplex mode as autonegotiate.
|
Command Default
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The interface speed that you specify can affect the duplex mode used for an interface, so you should set the speed before setting the duplex mode. If you set the speed for autonegotiation, the duplex mode is automatically set to be autonegotiated. If you specify 10- or 100-Mbps speed, the port is automatically configured to use half-duplex mode, but you can specify full-duplex mode instead. 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 set for Gigabit Ethernet.
See the Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide for more information on interface speed and duplex settings.
This command does not require a license.
Examples
This example shows how to specify the duplex mode for full-duplex:
switch(config-if)# duplex full
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface, which includes the duplex parameter.
|
encapsulation dot1Q
To enable IEEE 802.1Q encapsulation of traffic on a specified subinterface in a virtual LAN (VLAN), use the encapsulation dot1q command in subinterface configuration mode. To disable encapsulation, use the no form of this command.
encapsulation dot1Q vlan-id
no encapsulation dot1Q vlan-id
Syntax Description
vlan-id
|
VLAN to set when the interface is in access mode; valid values are from 1 to 4094, except for the VLANs reserved for internal switch use.
|
Defaults
No encapsulation
Command Modes
Subinterface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
IEEE 802.1Q encapsulation is configurable on Ethernet interfaces. IEEE 802.1Q is a standard protocol for interconnecting multiple switches and routers and for defining VLAN topologies.
Use the encapsulation dot1q command in subinterface range configuration mode to apply a VLAN ID to the subinterface.
This command does not require a license.
Examples
This example shows how to enable dot1Q encapsulation on a subinterface for VLAN 30:
switch(config-subif)# encapsulation dot1q 30
Related Commands
Command
|
Description
|
show vlan dot1Q
|
Displays dot1Q encapsulation information for a VLAN.
|
errdisable detect cause
To enable error-disabled (errdisable) detection for an application, use the errdisable detect cause command. To return to the default setting, use the no version of this command.
errdisable detect cause {acl-exception | all | link-flap | loopback}
no errdisable detect cause {acl-exception | all | link-flap | loopback}
Syntax Description
acl- exception
|
Enables error-disabled detection for access-list installation failures.
|
all
|
Enables error-disabled detection on all causes.
|
link-flap
|
Enables error-disabled disable detection on link-state flapping.
|
loopback
|
Enables error-disabled detection on loopback.
|
Command Default
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the errdisable detect cause command to enable error detection for an application.
A cause is defined as the reason why the error-disabled state occurred. When a cause is detected on an interface, the interface is placed in an error-disabled state. This error-disabled state is an operational state that is similar to the link-down state. You must enter the shutdown command and then the no shutdown command to recover an interface manually from the error-disabled state.
This command does not require a license.
Examples
This example shows how to enable error-disabled detection on all cases:
switch(config)# errdisable detect cause all
Related Commands
Command
|
Description
|
shutdown
|
Brings the port down administratively.
|
no shutdown
|
Brings the port up administratively.
|
show interface status err-disabled
|
Displays the interface error-disabled state.
|
errdisable recovery cause
To enable the automatic recovery from the error-disabled (errdisable) state for an application, use the errdisable recovery cause command. To return to the default setting, use the no version of this command.
errdisable recovery cause {all | bpduguard | link-flap | failed-port-state | psecure-violation |
security-violation | storm-control | udld | vpc-peerlink}
no errdisable recovery cause {all | bpduguard | link-flap | psecure-violation | security-violation
| storm-control | udld | vpc-peerlink}
Syntax Description
all
|
Enables automatic recovery from all causes.
|
bpduguard
|
Enables automatic recovery from BPDU Guard error-disabled state.
|
link-flap
|
Enables automatic recovery from link-state flapping.
|
failed-port state
|
Enables timer automatic recovery from the STP set port state failure.
|
psecure- violation
|
Enables timer automatic recovery from the psecure violation disable state.
|
security- violation
|
Enables automatic recovery from the 802.1X violation disable state.
|
storm- control
|
Enables automatic recovery from the storm control error-disabled state.
|
udld
|
Enables automatic recovery from the UDLD error-disabled state.
|
vpc-peerlink
|
Enables automatic recovery from an inconsistent vPC peer-link error-disabled state.
|
Command Default
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
4.1(3)
|
Added vpc-peerlink parameter.
|
Usage Guidelines
Use the errdisable recovery cause command to enable automatic recovery on the interface from the error-disabled state for an application. This command tries to bring the interface out of the error-disabled state and retry operation once all the causes have timed out. The interface automatically tries to come up again after 300 seconds. To change this interval, use the errdisable recovery interval command.
This command does not require a license.
Examples
This example shows how to automatically recover from the error-disabled state for link flapping after you have enabled the recovery timer:
switch(config)# errdisable recovery cause link-flap
Related Commands
Command
|
Description
|
errdisable recovery interval
|
Enables the recovery timer.
|
show interface status err-disabled
|
Displays interface error-disabled state.
|
errdisable recovery interval
To enable the recovery timer, use the errdisable recovery interval command.
errdisable recovery interval interval
Syntax Description
interval
|
Error detection for access-list installation failures. The range is from 30 to 65535.
|
Command Default
300 seconds
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the errdisable recovery interval command to configure the recovery timer.
This command does not require a license.
Examples
This example shows how to configure the recovery timer:
switch(config)# errdisable recovery interval 32
Related Commands
Command
|
Description
|
errdisable recovery cause
|
Enables the error-disabled recovery for an application.
|
show interface status err-disabled
|
Displays the interface error-disabled state.
|
feature interface-vlan
To enable the creation of VLAN interfaces (switched virtual interfaces [SVI]), use the feature interface-vlan command in global configuration mode. To disable the VLAN interface feature, use the no form of this command.
feature interface-vlan
no feature interface-vlan
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must use the feature interface-vlan command before you can create VLAN interfaces.
This command does not require a license.
Examples
This example shows how to enable the interface VLAN feature:
switch(config)# feature interface-vlan
Related Commands
Command
|
Description
|
interface vlan
|
Creates a VLAN interface.
|
feature lacp
To enable Link Aggregation Control Protocol (LACP) port channeling on the device, use the feature lacp command. To disable LACP on the device, use the no form of this command.
feature lacp
no feature lacp
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must remove all the LACP configuration parameters from all port channels on the device before you can disable LACP. You cannot disable LACP while LACP configurations remain on the device.
Even after you enable LACP globally, you do not have to run LACP on all port channels on the device. You enable LACP on each channel mode using the channel-group mode command.
When you enter the no form of this command, the system removes all the LACP configuration from the device.
This command does not require a license.
Examples
This example shows how to enable LACP port channeling on the device:
switch(config)# feature lacp
Related Commands
Command
|
Description
|
show lacp port-channel
|
Displays information on port channels with LACP enabled.
|
feature tunnel
To enable the creation of tunnel interfaces, use the feature tunnel command in global configuration mode. To disable the tunnel interface feature, use the no form of this command.
feature tunnel
no feature tunnel
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must use the feature tunnel command before you can create tunnel interfaces.
This command requires the Enterprise license.
Examples
This example shows how to enable the interface tunnel feature:
switch(config)# feature tunnel
Related Commands
Command
|
Description
|
interface tunnel
|
Creates a tunnel interface.
|
feature udld
To enable UDLD globally on the device, use the feature udld command. To disable UDLD globally on the device, use the no feature udld command.
feature udld
no feature udld
Syntax Description
This command has no arguments or keywords.
Command Default
None
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the feature udld command to enable UDLD globally on the device. UDLD must be also enabled on the other linked interface and its device. After enabling the devices, it is possible to enable a UDLD mode for an interface.
Use the no feature udld command to disable UDLD globally for Ethernet interfaces on the device.
This command does not require a license.
Examples
This example shows how to enable the UDLD for a device:
switch(config)# feature udld
This example shows how to disable UDLD for a device:
switch(config)# no feature udld
Related Commands
Command
|
Description
|
show udld
|
Displays information about the udld configuration.
|
feature vpc
To enable virtual port channels (vPCs), use the feature vpc command. To return to the default setting, use the no form of this command.
feature vpc
no feature vpc
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must use the feature vpc command to enable the vPC functionality. You must enable vPCs before you can configure them.
Note When you disable vPC, the device clears all the vPC configurations.
This command does not require a license.
Examples
This example shows how to enable vPC functionality on the device:
switch(config)# feature vpc
Related Commands
Command
|
Description
|
show feature
|
Displays information about the features enabled on the device.
|
show vpc brief
|
Displays vPC information on vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
flowcontrol
To enable or disable the ability of the Ethernet port to send and receive flow-control pause frames, use the flowcontrol command. To return to the default flow-control settings, use the no version of the command.
flowcontrol {send | receive} {desired | on | off}
no flowcontrol {send | receive}
Syntax Description
send
|
Specify the flow-control send setting for ports that run at 1000 Mbps or faster.
|
receive
|
Specify the flow-control receive setting for ports that run at any speed.
|
desired
|
Specify the remote port setting to desired for both send and receive, if the configuration of the remote port is unknown.
|
on
|
Specify the remote port setting to on, if you want the local port to send flow-control pause frames.
|
off
|
Specify the remote port's send and receive parameter settings to off, if you do not want to use flow control.
|
Command Default
1-Gb/s interfaces—Off for receive; off for send
10-Gb/s interfaces—Off for receive; off for send
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the flowcontrol command to enable or disable the ability of the Ethernet port to send and receive flow-control pause frames.
Make sure that the remote port has the corresponding setting for the flow control that you need. If you want the local port to send flow-control pause frames, the remote port has a receive parameter set to on or desired. If you want the local port to receive flow-control frames, you must make sure that the remote port has a send parameter set to on or desired. If you do not want to use flow control, you can set the remote port's send and receive parameters to off.
For Ethernet ports that run at 1 Gbps or faster, you can enable or disable the port's ability to send and receive flow-control pause frames. For Ethernet ports that run slower than 1 Gbps, you can enable or disable only the port's ability to receive pause frames.
When enabling flow control for the local port, you either fully enable the local port to send or receive frames regardless of the flow-control setting of the remote port, or you set the local port to use the desired setting used by the remote port. If you enable both the local and remote ports for flow control, or set the desired flow control of the other port, or set a combination of those two states, flow control is enabled for those ports.
Note For ports that run at 10 Gbps, you cannot use the desired state for the send or receive parameter.
To see how the different port flow-control states affect the link flow-control state, see Table 1.
Table 1 Port Flow-Control Influences on Link Flow Control
Port flow control states
|
Link Flow Control State
|
Port Receiving Data
(Sends Pause Frames)
|
Port Transmitting Data (Receives Pause Frames)
|
Enabled
|
Enabled
|
Enabled
|
Enabled
|
Desired
|
Enabled
|
Enabled
|
Disabled
|
Disabled
|
Desired
|
Enabled
|
Enabled
|
Desired
|
Desired
|
Enabled
|
Desired
|
Disabled
|
Disabled
|
Disabled
|
Enabled
|
Disabled
|
Disabled
|
Desired
|
Disabled
|
Disabled
|
Disabled
|
Disabled
|
This command does not require a license.
Examples
This example shows how to set Ethernet port 3/1 to send flow-control pause frames:
switch(config)# interface ethernet 3/1
switch(config-if)# flowcontrol send on
Related Commands
Command
|
Description
|
show interface flowcontrol
|
Displays information about the interface flowcontrol.
|
show interface
|
Displays information about the interface, which includes the flowcontrol parameter.
|
inherit port-profile
To assign a port profile to an interface or range of interfaces and to inherit an additional port profile onto an existing port profile, use the inherit port-profile command. To remove an inherited port profile or to remove a port profile from specified interfaces, use the no form of this command.
inherit port-profile name
no inherit port-profile name
Syntax Description
name
|
Port profile that you want to assign to interfaces or to inherit onto the existing port profile.
|
Defaults
None
Command Modes
Interface configuration
Port-profile configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the inherit port-profile command to do the following:
•Assign the port profile to a specified interface or range of specified interfaces. You do this in the interface configuration mode. The maximum number of interfaces that can inherit a single profile is 512.
•Inherit configuration parameters from another port profile onto an existing port profile. You do this in the port-profile mode, using the name of the port profile that you want to inherit configurations into. Only port profiles of the same type can be inherited by another port profile. The device supports four levels of inheritance except for the switchport private-vlan mapping and the private-vlan mapping commands, which support only one inheritance level. The same port profile can be inherited by any number of port profiles. In a port-profile inheritance hierarchy, all the profiles must have the same switchport configuration.
See the port-profile command and the state-enabled command for information about creating, configuring, and enabling port profiles.
If you attempt to inherit a port profile to the wrong type of interface, the system returns an error.
When you remove a port profile from a range of interfaces, the system undoes the configuration from the interfaces first and then removes the port-profile link itself. Also, when you remove a port profile, the system checks the interface configuration and either skips port-profiles commands that have been overridden by directly entered interface commands or returns the command to the default value.
You can also choose a subset of interfaces from which to remove a port profile from those interfaces to which you originally applied the profile. For example, if you configured a port profile and configured 10 interfaces to inherit that port profile, you can remove the port profile from just some of the specified 10 interfaces. The port profile continues to operate on the remaining interfaces to which it is applied.
You use the port-profile configuration mode to remove an inherited port profile from an original port profile.
This command does not require a license.
Examples
This example shows how to assign a specified port profile to a range of interfaces:
switch(config)# interface ethernet 2/1-10
switch(config-if)# port-profile test
This example shows how to inherit the configuration parameters from the port profile named switch onto the port profile named test:
switch(config-ppm)# inherit port-profile switch
Related Commands
Command
|
Description
|
show port-profile
|
Displays information about port profiles.
|
interface cmp-mgmt module
To create a CMP management interface and enter interface configuration mode, use the interface cmp-mgmt module command.
interface cmp-mgmt module number
Syntax Description
number
|
Identifying active or standby supervisor module number. Valid values are 9-10.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface cmp-mgmt module command to create a CMP management interface.
This command does not require a license.
Examples
This example shows how to create a CMP management interface:
switch(config)# interface cmp-mgmt module 9
interface ethernet
To configure an Ethernet interface and enter interface configuration mode, use the interface ethernet command.
interface ethernet slot/port
Syntax Description
slot/port
|
Specifies the slot number and port number for the Ethernet interface.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface ethernet command to enter the interface configuration mode for the specified interface or range of interfaces.
This command does not require a license.
Examples
This example shows how to enter the interface command mode for the Ethernet interface on slot 2, port 1:
switch(config)# interface ethernet 2/1
Related Commands
Command
|
Description
|
show interface ethernet slot/port
|
Displays information about the Ethernet interface.
|
interface loopback
To create a loopback interface and enter interface configuration mode, use the interface loopback command. To remove a loopback interface, use the no form of this command.
interface loopback number
no interface loopback number
Syntax Description
number
|
Identifying interface number; valid values are from 0 to 1023.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface loopback command to create or modify loopback interfaces.
This command does not require a license.
Examples
This example shows how to create a loopback interface:
switch(config)# interface loopback 50
Related Commands
Command
|
Description
|
show interface loopback
|
Displays information about the traffic on the specified loopback interface.
|
interface mgmt
To configure the management interface and enter interface configuration mode, use the interface management command.
interface mgmt0
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface mgmt0 command to configure the management interface and to enter the interface configuration mode.
This command does not require a license.
Examples
This example shows how to enter the interface configuration mode to configure the management interface:
switch(config)# interface mgmt0
Related Commands
Command
|
Description
|
show interface mgmt0
|
Displays information about the traffic on the management interface.
|
interface port-channel
To create a port-channel interface and enter interface configuration mode, use the interface port-channel command. To remove a logical port-channel interface or subinterface, use the no form of this command.
interface port-channel channel-number
no interface port-channel channel-number
Syntax Description
channel-number
|
Channel number that is assigned to this port-channel logical interface. The range of valid values is from 1 to 4096.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface port-channel command to create or delete port-channel groups and to enter the interface configuration mode for the port channel.
You can create port channels implicitly using the bandwidth (interface) command or explicitly using the feature tunnel command.
A port can belong to only one channel group.
You can create subinterfaces on a Layer 3 port-channel interface. However, you cannot add a Layer 3 interface that has existing subinterfaces to a port channel.
Note The Layer 3 port-channel interface is the routed interface.
The Link Aggregation Control Protocol (LACP) system ID is unique for each VDC, and channel-group numbers and names can be re-used in different VDCs.
When you use the interface port-channel command, follow these guidelines:
•If you are using CDP, you must configure it only on the physical interface and not on the port-channel interface.
•If you do not assign a static MAC address on the port-channel interface, a MAC address is automatically assigned. If you assign a static MAC address and then later remove it, the MAC address is automatically assigned.
•The MAC address of the port channel is the address of the first operational port added to the channel group. If this first-added port is removed from the channel, the MAC address comes from the next operational port added, if there is one.
This command does not require a license.
Examples
This example shows how to create a port-channel group interface with channel-group number 50:
switch(config)# interface port-channel 50
Related Commands
Command
|
Description
|
show interface port-channel
|
Displays information on traffic on the specified port-channel interface.
|
show port-channel summary
|
Displays information on the port channels.
|
show lacp
|
Displays LACP information.
|
interface tunnel
To create a tunnel interface and enter interface configuration mode, use the interface tunnel command. To remove a tunnel interface, use the no form of this command.
interface tunnel number
no interface tunnel number
Syntax Description
number
|
Identifying interface number; valid values are from 0 to 32767.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface tunnel command to create or modify tunnel interfaces.
Cisco NX-OS supports the GRE header defined in IETF RFC 2784. Cisco NX-OS does not support tunnel keys and other options from IETF RFC 1701.
You can configure IP tunnels only in the default virtual device context (VDC).
This command requires the Enterprise license.
Examples
This example shows how to create a tunnel interface:
switch(config)# interface tunnel 50
Related Commands
Command
|
Description
|
tunnel source
|
Sets the source of the IP tunnel.
|
tunnel destination
|
Sets the destination of the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic on the specified tunnel interface.
|
interface vlan
To create a VLAN interface and enter interface configuration mode, use the interface vlan command. To remove a VLAN interface, use the no form of this command.
interface vlan vlan-id
no interface vlan vlan-id
Syntax Description
vlan-id
|
VLAN to set when the interface is in access mode; valid values are from 1 to 4094, except for the VLANs reserved for the internal switch use.
|
Defaults
None
Command Modes
Global configuration
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the interface vlan command to create or modify VLAN interfaces.
The VLAN interface is created the first time that you enter the interface vlan command for a particular VLAN. The vlan-id argument corresponds to the VLAN tag that is associated with the data frames on an Inter-Switch Link (ISL), the IEEE 802.1Q-encapsulated trunk, or the VLAN ID that is configured for an access port.
This command does not require a license.
Examples
This example shows how to create a VLAN interface for VLAN 50:
switch(config)# interface vlan 50
Related Commands
Command
|
Description
|
feature interface-vlan
|
Enables the ability to create VLAN interfaces.
|
show interface vlan
|
Displays information about the traffic on the specified VLAN interface.
|
lacp graceful-convergence
To configure port-channel graceful convergences for the Link Aggregation Control Protocol (LACP), use the lacp graceful-convergence command. To disable port-channel graceful convergences, use the no form of this command.
lacp graceful-convergence
no lacp graceful-convergence
Syntax Description
This command has no arguments or keywords.
Defaults
LACP graceful convergence is enabled.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2
|
This command was introduced.
|
Usage Guidelines
By default LACP graceful convergence is enabled. In situations where you need to support LACP interoperability with devices where the graceful failover defaults may delay the time taken for a disabled port to be brought down or cause traffic from the peer to be lost, you can disable convergence.
Caution To avoid port suspension, you should not disable convergence with a peer running Cisco NX-OS.
Note The port channel has to be in the administratively down state before the lacp graceful-convergence command can be run.
This command does not require a license.
Examples
This example shows how to disable LACP graceful convergence on a port channel:
switch (config)# interface port-channel 1
switch(config-if)# shutdown
switch(config-if)# no lacp graceful-convergence
switch(config-if)# no shutdown
Related Commands
Command
|
Description
|
show lacp
|
Displays LACP information.
|
lacp port-priority
To set the priority for the physical interfaces for the Link Aggregation Control Protocol (LACP), use the lacp port-priority command. To return the port priority to the default value, use the no form of this command.
lacp port-priority priority
no lacp port-priority
Syntax Description
priority
|
Priority for the physical interfaces. The range of valid numbers is from 1 to 65535.
|
Defaults
32768
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Each port configured to use LACP has an LACP port priority. You can accept the default value of 32768 for the LACP port priority, or you can configure a value between 1 and 65535. LACP uses the port priority in combination with the port number to form the port identifier. The port priority is used with the port number to form the port identifier. The port priority is used to decide which ports should be put into standby mode when there is a hardware limitation that prevents all compatible ports from aggregating or when you have more than eight ports configured for the channel group.
When setting the priority, note that a higher number means a lower priority.
This command does not require a license.
Examples
This example shows how to set the LACP port priority for the interface to 2000:
switch(config-if)# lacp port-priority 2000
Related Commands
Command
|
Description
|
show lacp
|
Displays LACP information.
|
lacp suspend-individual
To enable individual Link Aggregation Control Protocol (LACP) port suspension behavior on a port channel, use the lacp suspend-individual command. To disable individual port suspension behavior on the port channel, use the no form of this command.
lacp suspend-individual
no lacp suspend-individual
Syntax Description
This command has no arguments or keywords.
Defaults
LACP suspend-individual is enabled.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2
|
This command was introduced.
|
Usage Guidelines
By default LACP suspend-individual is enabled. LACP sets a port to the suspended state if it does not receive an LACP PDU from the peer. This can cause some servers to fail to boot up as they require LACP to logically bring-up the port. You can tune behavior to individual use.
Note You should only run the lacp suspend-individual command on edge ports. The port channel has to be in the administratively down state before the command can be run.
This command does not require a license.
Examples
This example shows how to disable LACP suspend-individual on a port channel:
switch (config)# interface port-channel 1
switch(config-if)# shutdown
switch(config-if)# no lacp suspend-individual
switch(config-if)# no shutdown
Related Commands
Command
|
Description
|
show lacp
|
Displays LACP information.
|
lacp system-priority
To set the system priority of the device for the Link Aggregation Control Protocol (LACP), use the lacp system-priority command. To return the system priority to the default value, use the no form of this command.
lacp system-priority priority
no lacp system-priority
Syntax Description
priority
|
Priority for the physical interfaces. The range of valid numbers is from 1 to 65535.
|
Defaults
32768
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Each device that runs LACP has an LACP system priority value. You can accept the default value of 32768 for this parameter, or you can configure a value between 1 and 65535. LACP uses the system priority with the MAC address to form the system ID and also during negotiation with other systems. The system ID is unique for each virtual device context (VDC).
When setting the priority, note that a higher number means a lower priority.
This command does not require a license.
Examples
This example shows how to set the LACP system priority for the device to 2500:
switch(config)# lacp system-priority 2500
Related Commands
Command
|
Description
|
show lacp
|
Displays LACP information.
|
show lacp system identifier
|
Displays information on the LACP system identifier.
|
link debounce
To enable the debounce timer for Ethernet ports and specify a debounce time, use the link debounce command. To disable the timer, use the no form of this command.
link debounce [time milliseconds]
no link debounce
Syntax Description
time milliseconds
|
(Optional) Debounce timer for the time you want to specify. The range of time is from 0 to 5000 ms.
|
Command Default
Enabled
100 milliseconds
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the link debounce command to enable the debounce timer for Ethernet ports and set it for a specified amount of time in milliseconds. The default debounce time applies when you enter the link debounce command with no arguments.
The range of time is from 1 to 5000 ms. The debounce timer is disabled if you specify the time to 0 ms.
This command does not require a license.
Examples
This example shows how to enable the debounce timer and set the debounce time to 1000 ms for the Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# link debounce time 1000
This example shows how to disable the debounce timer for the Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# no link debounce
Related Commands
Command
|
Description
|
show interface debounce
|
Displays the debounce time information about the interface.
|
load-interval
To change the sampling interval for statistics collections on interfaces, use the load-interval command. To return to the default sampling interval, use the no form of this command.
load-interval [counter {1 | 2 | 3}] seconds
no load-interval [counter {1 | 2 | 3}] [seconds]
Syntax Description
1 | 2 | 3
|
Specifies number of counters configured on the interface.
|
seconds
|
Specifies interval between sampling statistics on the interface. The range is from 60 to 300 seconds for VLAN network interfaces, and the range is from 30 to 300 seconds for Ethernet and port-channel interfaces.
|
Command Default
1—30 seconds; 60 seconds for VLAN network interface
2—300 seconds
3—not configured
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the load-interval command to obtain bit-rate and packet-rate statistics for three different durations.
You can set the statistics collection intervals on the following types of interfaces:
•Ethernet interfaces
•Port-channel interfaces
•VLAN network interfaces
You cannot use this command on the management interface or subinterfaces.
This command sets the sampling interval for such statistics as packet rate and bit rate on the specified interface.
This command does not require a license.
Examples
This example shows how to set the three sample intervals for the Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# load-interval counter 1 60
switch(config-if)# load-interval counter 2 135
switch(config-if)# load-interval counter 3 225
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface.
|
max-ports
To assign a maximum possible number of interfaces that a port profile can inherit, use the max-ports command. To return to the default value, use the no form of this command.
max-ports number
no max-ports number
Syntax Description
number
|
Maximum number of interfaces that a port profile can inherit. The range is from 1 to 512 ports, and there is no default value.
|
Defaults
None
Command Modes
Port-profile configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
You must be in the port-profile configuration mode in order to issue this command.
You must enable each specific port profile using the state-enabled command.
This command does not require a license.
Examples
This example shows how to enter the port-profile configuration mode and to configure the maximum possible number of interfaces that a port profile can inherit:
switch(config)# port-profile type ethernet type test
switch(config-ppm)# max-ports 500
Related Commands
Command
|
Description
|
state-enabled
|
Enables a specified port profile.
|
show port-profile
|
Displays information about port profiles.
|
mdix auto
To enable automatic medium-dependent independent crossover (MDIX) detection for the interface, use the mdix auto command. To turn automatic detection off, use the no form of this command.
mdix auto
no mdix
Syntax Description
This command has no arguments or keywords.
Command Default
Enabled
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the mdix auto command to enable automatic MDIX detection for the port. Use the no mdix command to disable MDIX detection for the port.
This command is only available on copper Ethernet ports. To detect the type of connection (crossover or straight) with another copper Ethernet port, enable the MDIX parameter for the local port. Before you begin, MDIX must be enabled on the remote port.
This command does not require a license.
Examples
This example shows how to enable MDIX for Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# mdix auto
This example shows how to disable MDIX for Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# no mdix
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface, which includes the MDIX status.
|
medium
To set the medium mode for an interface, use the medium command in interface configuration command. To remove the entry, use the no form of this command.
medium {broadcast | p2p}
no medium {broadcast | p2p}
Syntax Description
broadcast
|
Configures the interface as a broadcast medium.
|
p2p
|
Configures the interface as a point-to-point medium.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The medium command is used to configure the interface as broadcast or point to point.
This command does not require a license.
Examples
This example shows how to configure the interface for point-to-point medium:
switch(config-if)# medium p2p
mtu
To configure the maximum transmission unit (MTU) size for Layer 2 and Layer 3 Ethernet interfaces, use the mtu command. To return to the default value, use the no form of this command.
mtu size
no mtu
Syntax Description
size
|
For a Layer 2 interface, specify either the default MTU size (1500) in bytes or the system jumbo MTU size (9216, unless you have changed the default system jumbo size). For a Layer 3 interface, specify any even number between the range of 576 and 9216.
|
Command Default
1500 bytes
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the mtu size command to configure the MTU size for Layer 2 and Layer 3 Ethernet interfaces.
For Layer 3 interfaces, you can configure the MTU to be between 576 and 9216 bytes (even values are required). For Layer 2 interfaces, you can configure the MTU to be either the system default MTU (1500 bytes) or the system jumbo MTU size (which has the default size of 9216 bytes).
Note You can change the system jumbo MTU size, but if you change that value, you should also update the Layer 2 interfaces that use that value so that they use the new system jumbo MTU value. If you do not update the MTU value for Layer 2 interfaces, those interfaces will use the system default MTU (1500 bytes).
This command does not require a license.
Examples
This example shows how to configure the Layer 2 Ethernet port 3/1 with the default MTU size (1500):
switch(config)# interface ethernet 3/1
switch(config-if)# mtu 1500
Related Commands
Command
|
Description
|
show interface
|
Displays information about the interface, which includes the MTU size.
|
peer-gateway
To configure the device to send virtual port-channel (vPC) packets to the device's MAC address, use the peer-gateway command. To return to the default value, use the no form of this command.
peer-gateway
no peer-gateway
Syntax Description
This command has no arguments or keywords.
Command Default
None
Command Modes
vpc-domain configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the peer-gateway command to have a vPC peer device act as the gateway even for packets that are destined to the vPC peer device's MAC address.
This command does not require a license.
Examples
This example shows how to configure the device to use the switch gateway even for the packets that are destined the vPC:
switch(config)# vpc-domain 5
switch(config-vpc-domain)# peer-gateway
Related Commands
Command
|
Description
|
vpc-domain
|
Configures a vPC domain and enters the vpc-domain configuration mode.
|
peer-keepalive destination
To configure the virtual port-channel (vPC) peer-keepalive link and message between vPC peer devices, use the peer-keepalive destination command.
peer-keepalive destination ipaddress
[hold-timeout secs]
[interval msecs {timeout secs}
[{precedence {prec-value | network | internet | critical | flash-override | flash | immediate |
priority | routine}} | {tos {tos-value | max-reliability | max-throughput | min-delay |
min-monetary-cost | normal}} | tos-byte tos-byte-value]
[source ipaddress]
[udp-port number]
[vrf {name | management | vpc-keepalive}]
Syntax Description
ipaddress
|
IP address of the remote vPC peer device.
Note Must be an IPv4 address.
|
hold-timeout
|
(Optional) When peer-keepalive link goes down, the secondary vPC peer device waits this interval. The range is 3 to 10 seconds.
During the hold-timeout, the vPC secondary device does not take any action based on any keepalive messages received. This is to prevent the system taking action when the keepalive might be received just temporarily, such as if a supervisor fails a few seconds after the peer link goes down.
|
secs
|
(Optional) Variable in seconds.
|
interval
|
Number of milliseconds that you want between sending keepalive messages to the remote vPC peer device. This variable configures the interval between sending peer-keepalive messages to the remote vPC peer device and the maximum period to wait to receive a keepalive message from the remote vPC peer device. The range is between 400 to 10,000 milliseconds.
|
msecs
|
(Optional) Variable in milliseconds.
|
timeout
|
(Optional) Timeout timer starts at the end of the hold-timeout interval. During the timeout period, the secondary vPC peer device checks for vPC peer-keepalive hello messages from the primary vPC peer device. If the secondary vPC peer device receives a single hello message, that device disables all vPC interfaces on the secondary vPC peer device. The range is between 3 and 20 seconds.
During the timeout, the vPC secondary device takes action to become the vPC primary device if no keepalive message is received by the end of the configured interval.
|
precedence
|
(Optional) Precedence value for the peer-keepalive message. Valid values are:
•0 to 7
•network (7)
•internet (6)
•critical (5)
•flash-override (4)
•flash (3)
•immediate (2)
•priority (1)
•routine (0)
|
tos
|
(Optional) Precedence, or TOS value, for the peer-keepalive message. Valid values are:
•0, 1, 2, 4, 8
•max-reliability (2)
•max-throughput (4)
•min-delay (8)
•min-monetary-cost (1)
•normal (0)
Note The only valid values are shown here.
|
tos-byte
|
(Optional) Precedence, or 8-bit TOS value, for the peer-keepalive message. The higher the numerical value, the higher throughput priority. The range is from 0 to 255.
|
source
|
(Optional) IP address of the local vPC peer device.
Note Must be an IPv4 address.
|
number
|
(Optional) Number of the UDP port to send and receive the vPC peer-keepalive messages. The range is from 1024 to 6500.
|
name
|
(Optional) Name of VRF that you want to use for the vPC peer-keepalive link and messages.
|
.
Defaults
Peer-keepalive is disabled.
Hold-timeout is 3 seconds.
Interval is 1000 milliseconds.
Timeout is 5 seconds.
Precedence is default, with a level of 6 (internet).
UDP port is 3200.
VRF is management VRF.
Command Modes
vpc-domain configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can configure the peer-keepalive parameters. The vPC keepalive messages notify the system if one of the vPC peer devices goes down.
Note You must configure the peer-keepalive messages on each of the vPC peer devices to enable the functionality.
Although the keepalive messages can transmit over any Layer 3 topology, we recommend that you create and configure a separate VRF with Layer 3 ports on each vPC peer device as the source and destination for the vPC keepalive messages. The default ports and VRF for the peer-alive link are the management ports and the management VRF. Do not use the peer link itself for the vPC peer-keepalive messages.
Note Ensure that both the source and destination IP addresses used for the peer-keepalive messages are unique in your network.
The vPC keepalive messages are IP/UDP messages.
This command accepts only IPv4 addresses.
Note You must configure the peer-keepalive messages on each of the vPC peer devices to enable the functionality.
The device assumes that its vPC peer device is down when the device does not receive any messages from the peer during the timeout period. We recommend that you configure the timeout value to be three times the interval value.
You can configure either the precedence, tos, or tos-byte value to ensure throughput for the vPC peer-keepalive message.
Note We recommend that you create a separate VRF and assign a Layer 3 port on each vPC peer device for the peer-keepalive link.
This command does not require a license.
Examples
This example shows how to configure the IP address of the remote vPC peer device for the fault-tolerant link:
switch(config-vpc-domain)# peer-keepalive destination 172.28.231.85
Related Commands
Command
|
Description
|
show running-config vpc all
|
Displays information on vPC peer-keepalive status. If the feature is not enabled, the system displays an error when you enter this command.
|
show vpc peer-keepalive
|
Displays information on vPC peer-keepalive status. If the feature is not enabled, the system displays an error when you enter this command.
|
port-channel load-balance ethernet
To set the load-balancing method among the interfaces in the channel-group bundle, use the port-channel load-balance ethernet command. To return the system priority to the default value, use the no form of this command.
port-channel load-balance ethernet method [module slot]
no port-channel load-balance ethernet [method [module slot]]
Syntax Description
method
|
Load-balancing method. See the "Usage Guidelines" section for a list of valid values.
|
module slot
|
(Optional) Specifies the module slot number.
|
Defaults
Layer 2 packets—source-dest-mac
Layer 3 packets—source-dest-ip-port
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
When you do not specify a module, you are configuring load balancing for the entire device. When you use the module parameter, you are configuring load balancing for the specified modules
Valid method values are as follows:
•dest-ip-port—Loads distribution on the destination IP address and port.
•dest-ip-port-vlan—Loads distribution on the destination IP address, port, and VLAN.
•destination-ip-vlan—Loads distribution on the destination IP address and VLAN.
•destination-mac—Loads distribution on the destination MAC address.
•destination-port—Loads distribution on the destination port.
•source-dest-ip-port—Loads distribution on the source XOR-destination IP address and port.
•source-dest-ip-port-vlan—Loads distribution on the source XOR-destination IP address, port, and VLAN.
•source-dest-ip-vlan—Loads distribution on the source XOR-destination IP address and VLAN.
•source-dest-mac—Loads distribution on the source XOR-destination MAC address.
•source-dest-port—Loads distribution on the source XOR-destination port.
•source-ip-port—Loads distribution on the source IP address and port.
•source-ip-port-vlan—Loads distribution on the source IP address, port, and VLAN.
•source-ip-vlan—Loads distribution on the source IP address and VLAN.
•source-mac—Loads distribution on the source MAC address.
•source-port—Loads distribution on the source port.
Note You cannot configure load balancing using port channels per VDC. You must be in the default VDC to configure this feature; if you attempt to configure this feature from another VDC, the system returns an error.
Use the module argument to configure the module independently for port-channeling and load-balancing mode. When you do this, the remaining module use the current load-balancing method configured for the entire device, or the default method if you have not configured a method for the entire device. When you enter the no argument in conjunction with a module argument, the load-balancing method for the specified module takes the current load-balancing method that is in use for the entire device. If you configured a load-balancing method for the entire device, the specified module uses that configured method, rather than the default source-dest-ip-port/source-dest-mac. The per module configuration takes precedence over the load-balancing method configured for the entire device.
You can configure one load-balancing mode for the entire device, a different mode for specified modules, and yet another mode for other specified modules. The per module configuration takes precedence over the load balancing configuration for the entire device.
Use the option that provides the balance criteria with the greatest variety in your configuration. For example, if the traffic on a port channel is going only to a single MAC address and you use the destination MAC address as the basis of port channel load balancing, the port channel always chooses the same link in that port channel; using source addresses or IP addresses might result in better load balancing.
This command does not require a license.
Examples
This example shows how to set the load-balancing method for the entire device to use the source port:
switch(config)# port-channel load-balance ethernet source-port
Related Commands
Command
|
Description
|
show port-channel load-balance
|
Displays information on port-channel load balancing.
|
port-profile
To create a port profile and enter the port-profile configuration mode or to enter into the port-profile configuration mode of a previously created port profile, use the port-profile command. To remove the port profile, use the no form of this command.
port-profile [type {ethernet | interface-vlan | port-channel}] name
no port-profile [type {ethernet | interface-vlan | port-channel}] name
Syntax Description
type
|
(Optional) Specifies the type of interfaces.
|
ethernet
|
Specifies Layer 2 or Layer 3 interfaces.
|
interface-vlan
|
Specifies VLAN network interfaces.
|
port-channel
|
Specifies port-channel interfaces.
|
name
|
Name of the port profile.
|
Defaults
None
Command Modes
Interface configuration
Port-profile configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the port-profile command to group configuration commands and apply them to several interfaces simultaneously. All interfaces in the range must be the same type. The maximum number of interfaces that can inherit a single port profile is 512.
The port-profile name must be globally unique across types and networks.
Each port profile can be applied only to a specific type of interface; the choices are as follows:
•Ethernet
•VLAN network interface
•Port channel
Note When you choose ethernet as the interface type, the port profile is in the default mode which is Layer 3. Enter the switchport command to change the port profile to Layer 2 mode.
A subset of commands are available under the port-profile configuration mode, depending on which interface type you specify. Layer 3 and CTS commands are not supported by port profiles.
You can configure the following port-profile operations:
•Create port profiles
•Delete port profiles
•Add commands to and delete commands from port profiles
•Inherit port profiles at interfaces
•Enable and disable port profiles
•Inheritance between port profiles
•Configure maximum number of ports that a profile can inherit
You inherit the port profile when you attach the port profile to an interface or range of interfaces. The maximum number of interfaces that can inherit a single profile is 512. When you attach, or inherit, a port profile to an interface or range of interfaces, the system applies all the commands in that port profile to the interfaces.
Additionally, you can have one port profile inherit another port profile, which allows the initial port profile to assume all of the commands of the second, inherited, port profile that do not conflict with the initial port profile. Four levels of inheritance are supported except for the switchport private-vlan mapping and private-vlan mapping commands, which support only one level of inheritance. See the inherit port-profile command for information about inheriting an additional port profile and assigning port profiles to specified interfaces.
The system applies the commands inherited by the interface or range of interfaces according to the following guidelines:
•Commands that you enter under the interface mode take precedence over the port profile's commands if there is a conflict. However, the port profile retains that command in the port profile.
•The port profile's commands take precedence over default commands on the interface, unless it is explicitly overridden by the default command.
•When a range of interfaces inherits a second port profile, the commands of the initial port profile override those commands of the second port profile if there is a conflict.
•After you inherit a port profile onto an interface or range of interfaces, you can override individual configuration values by entering the new value at the interface configuration level. If you then remove the individual configuration values at the interface configuration level, the interface again uses the values in the port profile again.
•There are no default configurations associated with a port profile.
Note You cannot use port profiles with Session Manager. See the Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 4.2 book for information on Session Manager.
If you delete a specific configuration for a specified range of interfaces using the interface configuration mode, that configuration is also deleted from the port profile for that range of interfaces only. For example, if you have a channel group inside a port profile and you are in the interface configuration mode and you delete that port channel, the specified port channel is also deleted from the port profile as well.
Just as in the device, you can enter a configuration for an object in port profiles without that object being applied to interfaces yet. For example, you can configure a virtual routing and forward instance (VRF) without it being applied to the system. If you then delete that VRF and its configurations from the port profile, the system is unaffected.
After you inherit a port profile on an interface or range of interfaces and you delete a specific configuration value, that port-profile configuration will not operate on the specified interfaces.
You must enable each specific port profile using the state-enabled command.
This command does not require a license.
Examples
This example shows how to configure, name a port profile, and enter the port-profile configuration mode:
switch(config)# port-profile type ethernet test
Related Commands
Command
|
Description
|
state-enable
|
Enables a specified port profile.
|
show port-profile
|
Displays information about port profiles.
|
rate-mode dedicated
To set the dedicated rate mode for the specified ports, use the rate-mode dedicated command.
rate-mode dedicated
no rate-mode
Syntax Description
This command has no arguments or keywords.
Command Default
Shared rate mode is the default.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the rate-mode dedicated command to set the dedicated rate mode for the specified ports.
On a 32-port 10-Gigabit Ethernet module, each set of four ports can handle 10 gigabits per second (Gb/s) of bandwidth. You can use the rate-mode parameter to dedicate that bandwidth to the first port in the set of four ports or share the bandwidth across all four ports.
Note When you dedicate the bandwidth to one port, you must first administratively shut down the ports in the group, change the rate mode to dedicated, and then bring the dedicated port administratively up.
Table 1-2 identifies the ports that are grouped together to share each 10 Gb/s of bandwidth and which port in the group can be dedicated to utilize the entire bandwidth.
Table 1-2 Dedicated and Shared Ports
Ports Groups that Can Share Bandwidth
|
Ports that Can be Dedicated to Each 10-Gigabit Ethernet of Bandwidth
|
1, 3, 5, 7
|
1
|
2, 4, 6, 8
|
2
|
9, 11, 13, 15
|
9
|
10, 12, 14, 16
|
10
|
17, 19, 21, 23
|
17
|
18, 20, 22, 24
|
18
|
25, 27, 29, 31
|
25
|
26, 28, 30, 32
|
26
|
Note All ports in each port group must be part of the same virtual device context (VDC). For more information on VDCs, see the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.2.
When you enter the rate-mode dedicated command, the full bandwidth of 10 Gb is dedicated to one port. When you dedicate the bandwidth, all subsequent commands for the port are for dedicated mode.
This command does not require a license.
Examples
This example shows how to configure the dedicated rate mode for Ethernet ports 4/17, 4/19, 4/21, and 4/23:
switch(config)# interface ethernet 4/17, ethernet 4/19, ethernet 4/21, ethernet 4/23
switch(config-if)# shutdown
switch(config-if)# interface ethernet 4/17
switch(config-if)# rate-mode dedicated
switch(config-if)# no shutdown
Related Commands
Command
|
Description
|
show interface
|
Displays interface information, which includes the current rate mode dedicated.
|
rate-mode shared
To set the shared rate mode for the specified ports, use the rate-mode shared command.
rate-mode shared
Syntax Description
This command has no arguments or keywords.
Command Default
Shared rate mode is the default.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the rate-mode shared command to set the shared rate mode for the specified ports. This is the default rate mode for the module.
That is, use the rate-mode shared command to specify that each 10 Gb of bandwidth on a 32-port 10 GE Ethernet module is shared by ports in the same port group.
If the port group is in dedicated rate mode, you must first administratively shut down the ports in the group, change the rate mode to shared, and then bring the ports administratively up.
This command does not require a license.
Examples
This example shows how to configure the shared rate mode for Ethernet ports 4/17, 4/19, 4/21, and 4/23:
switch(config)# interface ethernet 4/17, ethernet 4/19, ethernet 4/21, ethernet 4/23
switch(config-if)# shutdown
switch(config-if)# interface ethernet 4/17
switch(config-if)# rate-mode shared
switch(config-if)# no shutdown
Related Commands
Command
|
Description
|
show interface
|
Displays interface information, which includes the current rate mode shared.
|
role priority
To override the default selection of virtual port-channel (vPC) primary and secondary devices when you create a vPC domain, use the role priority command. To return to the default vPC system priority, use the no form of this command.
role priority priority
no role priority
Syntax Description
priority
|
Role priority. The range is from 1 to 65636.
|
Defaults
32667
Command Modes
vpc-domain command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC system priority
By default, the system elects a primary and secondary vPC peer device after you configure the vPC domain and both sides of the vPC peer link. However, you may want the system to elect a specific vPC peer device as the primary device for the vPC. Then, you would manually configure the role value for the vPC peer device that you want as primary to be lower than that of the other vPC peer device.
This command does not require a license.
Examples
This example shows how to create a vPC role priority:
switch(config)# vpc domain 5
switch(config-vpc-domain)# role priority 2000
Related Commands
Command
|
Description
|
show vpc role
|
Displays the role for this device for the vPC domain as primary or secondary.
|
show interface
To display the interface status and information, use the show interface command.
show interface
Syntax Description
This command has some keywords. For more details, see the Usage Guidelines for this command.
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface command to display the interface status and information. To display show interface commands with valid keywords, see the following commands in this document:
•show interface brief—Show brief information of interface
•show interface capabilities—Show interface capabilities information
•show interface counters—Show interface counters
•show interface counters detailed—Show only non-zero counters
•show interface counters errors—Show interface error counters
•show interface counters module—Show interface counters on a specified module
•show interface counters snmp—Show SNMP MIB values
•show interface counters storm-control—Show interface storm-control counters
•show interface counters trunk—Show interface trunk counters
•show interface debounce—Show interface debounce time information
•show interface description—Show interface description
•show interface ethernet—Show Ethernet interface information
•show interface flowcontrol—Show interface flow control information
•show interface mgmt—Show management interface
•show interface port-channel—Show port-channel interface
•show interface port-channel counters—Show interface port-channel counters
•show interface status—Show interface line status
•show interface switchport—Show interface switchport information
•show interface transceiver—Show interface transceiver information
•show interface trunk—Show interface trunk information
This command does not require a license.
Examples
This example shows how to display the interface status and information:
Hardware: GigabitEthernet, address: 0019.076c.1a78 (bia 0019.076c.1a78)
Internet Address is 172.28.231.193/23
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Auto-Negotiation is turned on
1 minute input rate 26608 bits/sec, 10 packets/sec
1 minute output rate 2272 bits/sec, 0 packets/sec
473804 input packets 51412 unicast packets 124811 multicast packets
297581 broadcast packets 148270388 bytes
51994 output packets 50387 unicast packets 1460 multicast packets
147 broadcast packets 8330595 bytes
Ethernet2/1 is down (Administratively down)
Hardware: 10/100/1000 Ethernet, address: 0018.bad8.3ffd (bia 0019.076c.4dac)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Auto-Negotiation is turned on
Input flow-control is off, output flow-control is off
Switchport monitor is off
Last clearing of "show interface" counters never
1 minute input rate 0 bits/sec, 0 packets/sec
1 minute output rate 0 bits/sec, 0 packets/sec
ucast: 0 pkts, 0 bytes - mcast: 0 pkts, 0 bytes
ucast: 0 pkts, 0 bytes - mcast: 0 pkts, 0 bytes
0 input packets 0 unicast packets 0 multicast packets
0 broadcast packets 0 jumbo packets 0 storm suppression packets
0 output packets 0 multicast packets
0 broadcast packets 0 jumbo packets
0 input error 0 short frame 0 watchdog
0 no buffer 0 runt 0 CRC 0 ecc
0 overrun 0 underrun 0 ignored 0 bad etype drop
0 bad proto drop 0 if down drop 0 input with dribble
0 output error 0 collision 0 deferred
0 late collision 0 lost carrier 0 no carrier
...<additional lines truncated>
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface brief
To display brief information about the interface, use the show interface brief command.
show interface [ethernet slot/port | port-channel channel-number] command
Syntax Description
ethernet slot/port | port- channel channel-number
|
(Optional) Type and number of the interface that you want to display.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify an interface, this command displays information about all Layer 2 interfaces. Use the show interface brief command to display brief information about the interface.
This command does not require a license.
Examples
This example shows how to display brief information about the interface:
switch# show interface brief
--------------------------------------------------------------------------------
Port VRF Status IP Address Speed MTU
--------------------------------------------------------------------------------
mgmt0 -- up 172.28.231.193 1000 1500
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Port
--------------------------------------------------------------------------------
Eth2/1 -- eth routed down Administratively down auto(D) --
Eth2/2 -- eth routed down Administratively down auto(D) --
Eth2/3 -- eth routed down Administratively down auto(D) --
Eth2/4 1 eth pvlan down Administratively down auto(D) --
Eth2/5 -- eth routed down Administratively down auto(D) --
Eth2/6 1 eth access down Link not connected auto(D) --
Eth2/7 1 eth access up none 1000(D) --
Eth2/8 -- eth routed down Administratively down auto(D) --
Eth2/9 1 eth access up none 1000(D) --
Eth2/10 1 eth access down Link not connected auto(D) --
Eth2/11 -- eth routed down Administratively down auto(D) --
Eth2/12 -- eth routed down Administratively down auto(D) --
Eth2/13 -- eth routed down Administratively down auto(D) --
Eth2/14 -- eth routed down Administratively down auto(D) --
Eth2/15 -- eth routed down Administratively down auto(D) --
Eth2/16 -- eth routed down Administratively down auto(D) --
Eth2/17 -- eth routed down Administratively down auto(D) --
Eth2/18 -- eth routed down Administratively down auto(D) --
Eth2/19 -- eth routed down Administratively down auto(D) --
Eth2/20 -- eth routed down Administratively down auto(D) --
Eth2/21 -- eth routed down Administratively down auto(D) --
Eth2/22 -- eth routed down Administratively down auto(D) --
Eth2/23 -- eth routed down Administratively down auto(D) --
Eth2/24 -- eth routed down Administratively down auto(D) --
Eth2/25 -- eth routed down Administratively down auto(D) --
Eth2/26 -- eth routed down Administratively down auto(D) --
Eth2/27 -- eth routed down Administratively down auto(D) --
Eth2/28 -- eth routed down Administratively down auto(D) --
Eth2/29 -- eth routed down Administratively down auto(D) --
Eth2/30 -- eth routed down Administratively down auto(D) --
Eth2/31 -- eth routed down Administratively down auto(D) --
Eth2/32 -- eth routed down Administratively down auto(D) --
Eth2/33 -- eth routed down Administratively down auto(D) --
Eth2/34 -- eth routed down Administratively down auto(D) --
Eth2/35 -- eth routed down Administratively down auto(D) --
Eth2/36 -- eth routed down Administratively down auto(D) --
Eth2/37 -- eth routed down Administratively down auto(D) --
Eth2/38 -- eth routed down Administratively down auto(D) --
Eth2/39 -- eth routed down Administratively down auto(D) --
Eth2/40 -- eth routed down Administratively down auto(D) --
Eth2/41 -- eth routed down Administratively down auto(D) --
Eth2/42 -- eth routed down Administratively down auto(D) --
Eth2/43 -- eth routed down Administratively down auto(D) --
Eth2/44 -- eth routed down Administratively down auto(D) --
Eth2/45 -- eth routed down Administratively down auto(D) --
Eth2/46 -- eth routed down Administratively down auto(D) --
Eth2/47 -- eth routed down Administratively down auto(D) --
Eth2/48 -- eth routed down Administratively down auto(D) --
-------------------------------------------------------------------------------
Interface Secondary VLAN(Type) Status Reason
-------------------------------------------------------------------------------
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface capabilities
To display information about the interface capabilities, use the show interface capabilities command.
show interface [ethernet slot/port | port-channel channel-number] capabilities
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface capabilities command to display information about the capabilities of the interface such as the speed, duplex, and rate mode. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display the capabilities for a specific interface:
switch# show interface ethernet 2/7 capabilities
Trunk encap. type: 802.1Q
Broadcast suppression: percentage(0-100)
Flowcontrol: rx-(off/on/desired),tx-(off/on/desired)
QOS scheduling: rx-(2q4t),tx-(1p3q4t)
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface counters
To display in and out counters for all interfaces in the system, use the show interface counters command.
show interface [ethernet slot/port | port-channel channel-number] counters
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface counters command to display in and out counters for all or a specific interface. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display the in and out counters for all interfaces:
switch# show interface counters
--------------------------------------------------------------------------------
Port InOctets InUcastPkts InMcastPkts InBcastPkts
--------------------------------------------------------------------------------
mgmt0 137046816 46882 115497 267729
--------------------------------------------------------------------------------
Port OutOctets OutUcastPkts OutMcastPkts OutBcastPkts
--------------------------------------------------------------------------------
mgmt0 7555343 45951 1352 136
Related Commands
Command
|
Description
|
clear counters interface
|
Clears the counters for the specified interfaces.
|
show interface counters errors
To display interface error counters, use the show interface counters errors.
show interface [ethernet slot/port | port-channel channel-number] counter errors
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface counters errors command to display interface error counters. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display the interface error counters:
switch# show interface counters errors
--------------------------------------------------------------------------------
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Port Single-Col Multi-Col Late-Col Exces-Col Carri-Sen Runts
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Port Giants SQETest-Err Deferred-Tx IntMacTx-Er IntMacRx-Er Symbol-Err
--------------------------------------------------------------------------------
Related Commands
Command
|
Description
|
clear counters interface
|
Clears the counters for the specified interfaces.
|
show interface counters storm-control
To display interface storm control discard counters, use the show interface counters storm-control.
show interface [ethernet slot/port | port-channel channel-number] counters storm-control
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface counters storm-control command to display interface storm control discard counters. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display the interface storm control discard counters:
switch# show interface counters storm-control
--------------------------------------------------------------------------------
Port UcastSupp % McastSupp % BcastSupp % TotalSuppDiscards
--------------------------------------------------------------------------------
Eth2/1 100.00 100.00 100.00 0
Eth2/2 100.00 100.00 100.00 0
Eth2/3 100.00 100.00 100.00 0
Eth2/4 100.00 100.00 100.00 0
Eth2/5 100.00 100.00 100.00 0
Eth2/6 100.00 100.00 100.00 0
Eth2/7 100.00 100.00 100.00 0
Eth2/8 100.00 100.00 100.00 0
Eth2/9 100.00 100.00 100.00 0
Eth2/10 100.00 100.00 100.00 0
Eth2/11 100.00 100.00 100.00 0
Eth2/12 100.00 100.00 100.00 0
Eth2/13 100.00 100.00 100.00 0
Eth2/14 100.00 100.00 100.00 0
Eth2/15 100.00 100.00 100.00 0
Eth2/16 100.00 100.00 100.00 0
Eth2/17 100.00 100.00 100.00 0
Eth2/18 100.00 100.00 100.00 0
Eth2/19 100.00 100.00 100.00 0
Eth2/20 100.00 100.00 100.00 0
Eth2/21 100.00 100.00 100.00 0
Eth2/22 100.00 100.00 100.00 0
Eth2/23 100.00 100.00 100.00 0
Eth2/24 100.00 100.00 100.00 0
Eth2/25 100.00 100.00 100.00 0
Eth2/26 100.00 100.00 100.00 0
Eth2/27 100.00 100.00 100.00 0
Eth2/28 100.00 100.00 100.00 0
Eth2/29 100.00 100.00 100.00 0
Eth2/30 100.00 100.00 100.00 0
Eth2/31 100.00 100.00 100.00 0
Eth2/32 100.00 100.00 100.00 0
Eth2/33 100.00 100.00 100.00 0
Eth2/34 100.00 100.00 100.00 0
Eth2/35 100.00 100.00 100.00 0
Eth2/36 100.00 100.00 100.00 0
Eth2/37 100.00 100.00 100.00 0
Eth2/38 100.00 100.00 100.00 0
Eth2/39 100.00 100.00 100.00 0
Eth2/40 100.00 100.00 100.00 0
Eth2/41 100.00 100.00 100.00 0
Eth2/42 100.00 100.00 100.00 0
Eth2/43 100.00 100.00 100.00 0
Eth2/44 100.00 100.00 100.00 0
Eth2/45 100.00 100.00 100.00 0
Eth2/46 100.00 100.00 100.00 0
Eth2/47 100.00 100.00 100.00 0
Eth2/48 100.00 100.00 100.00 0
Related Commands
Command
|
Description
|
clear counters interface
|
Clears the counters for the specified interfaces.
|
show interface counters trunk
To display the counters for Layer 2 switch port trunk interfaces, use the show interface counters trunk command.
show interface {ethernet slot/port} counters trunk
Syntax Description
ethernet slot/port
|
Specifies the module number and port number for the trunk interface that you want to display.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The device supports only IEEE 802.1Q encapsulation. This command also displays the counters for trunk port channels.
This command does not require a license.
Examples
This example shows how to display the counters for a trunk interface. This display shows the frames transmitted and received through the trunk interface, as well as the number of frames with the wrong trunk encapsulation:
switch# show interface ethernet 2/9 counters trunk
---------------------------------------------------------------------
Port TrunkFramesTx TrunkFramesRx WrongEncap
---------------------------------------------------------------------
Related Commands
Command
|
Description
|
clear counters interface
|
Clears the counters for the specified interfaces.
|
show interface debounce
To display the debounce time information about the interface, use the show interface debounce command.
show interface [ethernet slot/port | port-channel channel-number] debounce
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface debounce command to display debounce time information about the interface. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display debounce time information about the interface:
switch# show interface debounce
--------------------------------------------------------------------------------
Port Debounce time Value(ms)
--------------------------------------------------------------------------------
Related Commands
Command
|
Description
|
link debounce time
|
Enables the debounce timer for Ethernet ports.
|
show interface description
To display a description about the interface, use the show interface description command.
show interface description
Syntax Description
This command has no arguments or keywords.
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface description command to display the interface description.
This command does not require a license.
Examples
This example shows how to display a description of the interface:
switch# show interface description
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Port Type Speed Description
-------------------------------------------------------------------------------
Eth2/10 eth 1000 ethernet slot 2 port 10
...<additional lines truncated>
Related Commands
Command
|
Description
|
description
|
Provides textual interface descriptions for interfaces.
|
show interface ethernet
To display information about the Ethernet interface, use the show interface ethernet command.
show interface ethernet slot/port
Syntax Description
slot/port
|
Specifies the slot number and port number for the Ethernet interface
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface ethernet command to display information about the Ethernet interface.
This command does not require a license.
Examples
This example shows how to display information about the Ethernet interface:
switch# show interface ethernet 2/5
Ethernet2/5 is down (Administratively down)
Hardware: 10/100/1000 Ethernet, address: 0018.bad8.3ffd (bia 0019.076c.4db0)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Auto-Negotiation is turned on
Input flow-control is off, output flow-control is off
Switchport monitor is off
Last clearing of "show interface" counters never
1 minute input rate 0 bits/sec, 0 packets/sec
1 minute output rate 0 bits/sec, 0 packets/sec
ucast: 0 pkts, 0 bytes - mcast: 0 pkts, 0 bytes
ucast: 0 pkts, 0 bytes - mcast: 0 pkts, 0 bytes
0 input packets 0 unicast packets 0 multicast packets
0 broadcast packets 0 jumbo packets 0 storm suppression packets
0 output packets 0 multicast packets
0 broadcast packets 0 jumbo packets
0 input error 0 short frame 0 watchdog
0 no buffer 0 runt 0 CRC 0 ecc
0 overrun 0 underrun 0 ignored 0 bad etype drop
0 bad proto drop 0 if down drop 0 input with dribble
0 output error 0 collision 0 deferred
0 late collision 0 lost carrier 0 no carrier
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface flowcontrol
To display the flowcontrol configuration for all or a specified interface, use the show interface flowcontrol command.
show interface [ethernet slot/port | port-channel channel-number] flowcontrol
Syntax Description
ethernet slot/port | port-channel channel-number
|
(Optional) Type and number of the interface that you want to display
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin 2
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface flowcontrol command to display information about the interface flowcontrol. If you do not specify an interface, this command displays information about all Layer 2 interfaces.
This command does not require a license.
Examples
This example shows how to display the interface flow control information:
switch# show interface flowcontrol
--------------------------------------------------------------------------------
Port Send FlowControl Receive FlowControl RxPause TxPause
--------------------------------------------------------------------------------
Eth2/1 off off off off 0 0
Eth2/2 off off off off 0 0
Eth2/3 off off off off 0 0
Eth2/4 off off off off 0 0
Eth2/5 off off off off 0 0
Eth2/6 off off off off 0 0
Eth2/7 off off off off 0 0
Eth2/8 off off off off 0 0
Eth2/9 off off off off 0 0
Eth2/10 off off off off 0 0
Eth2/11 off off off off 0 0
Eth2/12 off off off off 0 0
Eth2/13 off off off off 0 0
Eth2/14 off off off off 0 0
Eth2/15 off off off off 0 0
Eth2/16 off off off off 0 0
Eth2/17 off off off off 0 0
Eth2/18 off off off off 0 0
Eth2/19 off off off off 0 0
Eth2/20 off off off off 0 0
Eth2/21 off off off off 0 0
Eth2/22 off off off off 0 0
Eth2/23 off off off off 0 0
Eth2/24 off off off off 0 0
Eth2/25 off off off off 0 0
Eth2/26 off off off off 0 0
Eth2/27 off off off off 0 0
Eth2/28 off off off off 0 0
Eth2/29 off off off off 0 0
Eth2/30 off off off off 0 0
Eth2/31 off off off off 0 0
Eth2/32 off off off off 0 0
Eth2/33 off off off off 0 0
Eth2/34 off off off off 0 0
Eth2/35 off off off off 0 0
Eth2/36 off off off off 0 0
Eth2/37 off off off off 0 0
Eth2/38 off off off off 0 0
Eth2/39 off off off off 0 0
Eth2/40 off off off off 0 0
Eth2/41 off off off off 0 0
Eth2/42 off off off off 0 0
Eth2/43 off off off off 0 0
Eth2/44 off off off off 0 0
Eth2/45 off off off off 0 0
Eth2/46 off off off off 0 0
Eth2/47 off off off off 0 0
Eth2/48 off off off off 0 0
Related Commands
Command
|
Description
|
flowcontrol
|
Enables or disables the ability of the Ethernet port to send and receive flow-control pause frames.
|
show interface mgmt
To display the management interface information, use the show interface mgmt command.
show interface mgmt number [brief | counters [detailed [all] | errors [snmp]] | description |
status]
Syntax Description
number
|
Displays information about the management interface number. The valid value is 0.
|
brief
|
(Optional) Displays brief information about the management interface.
|
counters
|
(Optional) Displays the counters for the management interface.
|
detailed
|
(Optional) Displays detailed information about the counters for the management interface.
|
errors
|
(Optional) Displays the errors for the management interface.
|
snmp
|
(Optional) Displays the SNMP errors for the management interface.
|
description
|
(Optional) Displays the description of the management interface.
|
status
|
(Optional) Displays the status of the management interface.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface mgmt number command to display information about the management interface.
This command does not require a license.
Examples
This example shows how to display the management interface information:
switch# show interface mgmt0
Hardware: GigabitEthernet, address: 0019.076c.1a78 (bia 0019.076c.1a78)
Internet Address is 172.28.231.193/23
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Auto-Negotiation is turned on
1 minute input rate 6446522 bits/sec, 78642 packets/sec
1 minute output rate 1965455 bits/sec, 20644 packets/sec
78681 input packets 15607 unicast packets 20178 multicast packets
42896 broadcast packets 24189392 bytes
20647 output packets 20377 unicast packets 246 multicast packets
24 broadcast packets 7370904 bytes
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface port-channel
To display descriptive information about port channels, use the show interface port-channel command.
show interface port-channel channel-number [brief | description | flowcontrol | status |
switchport | trunk]
Syntax Description
channel-number
|
Number of the port-channel group. Valid values are from 1 to 4096.
|
brief
|
(Optional) Specifies the summary information for specified port channels.
|
description
|
(Optional) Specifies the description of specified port channels.
|
flowcontrol
|
(Optional) Specifies information about the flow-control status control for specified port channels and the statistics on received and transmitted flow-control pause packets.
|
status
|
(Optional) Specifies information about the status for specified port channels.
|
switchport
|
(Optional) Specifies information for specified Layer 2 port channels including access and trunk modes.
|
trunk
|
(Optional) Specifies information for specified Layer 2 port channels on the trunk mode.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
4.2(1)
|
Display of configured static MAC address for Layer 3 port channels added.
|
Usage Guidelines
To display more statistics for the specified port channels, use the show interface port-channel counters command.
This command does not require a license.
Examples
This example shows how to display information for a specific port channel. This command displays statistical information gathered on the port channel at 1-minute intervals:
switch(config)# show interface port-channel 50
port-channel50 is down (No operational members)
Hardware is Port-Channel, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Input flow-control is off, output flow-control is off
Switchport monitor is off
Members in this channel: Eth2/10
Last clearing of "show interface" counters 2d71.2uh
1 minute input rate 0 bytes/sec, 0 packets/sec
1 minute output rate 0 bytes/sec, 0 packets/sec
0 input packets 0 unicast packets 0 multicast packets
0 broadcast packets 0 jumbo packets 0 storm suppression packets
0 output packets 0 multicast packets
0 broadcast packets 0 jumbo packets
0 input error 0 short frame 0 watchdog
0 no buffer 0 runt 0 CRC 0 ecc
0 overrun 0 underrun 0 ignored 0 bad etype drop
0 bad proto drop 0 if down drop 0 input with dribble
0 output error 0 collision 0 deferred
0 late collision 0 lost carrier 0 no carrier
0 Rx pause 0 Tx pause 0 reset
This example shows how to display a brief description for a specific port channel, including the mode for the port channel, the status, speed, and protocol:
switch# show interface port-channel 5 brief
--------------------------------------------------------------------------------
Port-channel VLAN Type Mode Status Reason Speed Protocol
--------------------------------------------------------------------------------
eth access down No operational members auto(D) lacp
This example shows how to display the description for a specific port channel:
switch# show interface port-channel 5 description
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
This example shows how to display the flow-control information for a specific port channel:
switch# show interface port-channel 50 flowcontrol
------------------------------------------------------------------------------
Port Send FlowControl Receive FlowControl RxPause TxPause
------------------------------------------------------------------------------
The oper display for the show interface port-channel flowcontrol command shows as on if one member of the port channel is set to on for flow control; then all the of the members and the entire port channel is set to on for flow control.
This example shows how to display the status of a specific port channel:
switch# show interface port-channel 5 status
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
This example shows how to display information for a specific Layer 2 port channel:
switch# show interface port-channel 50 switchport
Switchport Monitor: Not enabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1-3967,4048-4093
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
This command displays information for Layer 2 port channels in both the access and trunk modes.
When you use this command for a routed port channel, the device returns the following message:
This example shows how to display information for a specific Layer 2 port channel that is in trunk mode:
switch# show interface port-channel 5 trunk
switch# show interface port-channel 50 trunk
port-channel50 is down (No operational members)
Hardware is Ethernet, address is 0000.0000.0000
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec
Receive flow-control is off, Send flow-control is off
Members in this channel: Eth2/10
Allowed Vlans: 1-3967,4048-4093
This command displays information for only Layer 2 port channels in the trunk modes; you cannot display information about Layer 2 port channels in the access mode with this command.
Related Commands
Command
|
Description
|
show interface port-channel counters
|
Displays the statistics for channel groups.
|
show port-channel summary
|
Displays summary information for all channel groups.
|
show interface port-channel counters
To display information about port-channel statistics, use the show interface port-channel counters command.
show interface port-channel channel-number counters [brief | detailed [all | snmp] | errors
[snmp] | trunk]
Syntax Description
channel-number
|
Number of the port-channel group. Valid values are from 1 to 4096.
|
brief
|
(Optional) Specifies the rate MB/s and total frames for specified port channels.
|
detailed
|
(Optional) Specifies the nonzero counters for specified port channels.
|
all
|
(Optional) Specifies the counters for specified port channels.
|
snmp
|
(Optional) Specifies the SNMP MIB values for specified port channels.
|
errors
|
(Optional) Specifies the interface error counters for specified port channels.
|
trunk
|
(Optional) Specifies the interface trunk counters for specified port channels.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command displays statistics for all port channels including LACP-enabled port channels and those port channels that are not associated with an aggregation protocol.
This command does not require a license.
Examples
This example shows how to display the counters for a specific port channel. This display shows the transmitted and received unicast and multicast packets:
switch# show interface port-channel 2 counters
Port InOctets InUcastPkts InMcastPkts InBcastPkts
Port OutOctets OutUcastPkts OutMcastPkts OutBcastPkts
This example shows how to display the brief counters for a specific port channel. This display shows the transmitted and received rate and total frames:
switch# show interface port-channel 20 counters brief
-------------------------------------------------------------------------------
Interface Input (rate is 1 min avg) Output (rate is 1 min avg)
------------------------- -----------------------------
-------------------------------------------------------------------------------
This example shows how to display all the detailed counters for a specific port channel:
switch# show interface port-channel 20 counters detailed all
10. rxTxHCPkts64Octets = 0
11. rxTxHCpkts65to127Octets = 0
12. rxTxHCpkts128to255Octets = 0
13. rxTxHCpkts256to511Octets = 0
14. rxTxHCpkts512to1023Octets = 0
15. rxTxHCpkts1024to1518Octets = 0
16. rxTxHCpkts1519to1548Octets = 0
14. rxHCPkts65to127Octets = 0
15. rxHCPkts128to255Octets = 0
16. rxHCPkts256to511Octets = 0
17. rxHCpkts512to1023Octets = 0
18. rxHCpkts1024to1518Octets = 0
19. rxHCpkts1519to1548Octets = 0
21. txHCPkts65to127Octets = 0
22. txHCPkts128to255Octets = 0
23. txHCPkts256to511Octets = 0
24. txHCpkts512to1023Octets = 0
25. txHCpkts1024to1518Octets = 0
26. txHCpkts1519to1548Octets = 0
74. InLayer3RoutedOctets = 0
76. OutLayer3RoutedOctets = 0
78. OutLayer3UnicastOctets = 0
79. OutLayer3Multicast = 0
80. OutLayer3MulticastOctets = 0
82. InLayer3UnicastOctets = 0
83. InLayer3Multicast = 0
84. InLayer3MulticastOctets = 0
85. InLayer3AverageOctets = 0
86. InLayer3AveragePackets = 0
87. OutLayer3AverageOctets = 0
88. OutLayer3AveragePackets = 0
This example shows how to display the error counters for a specific port channel:
switch# show interface port-channel 5 counters errors
--------------------------------------------------------------------------------
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Port Single-Col Multi-Col Late-Col Exces-Col Carri-Sen Runts
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Port Giants SQETest-Err Deferred-Tx IntMacTx-Er IntMacRx-Er Symbol-Err
--------------------------------------------------------------------------------
This example shows how to display information about the trunk interfaces for a specific port channel:
switch# show interface port-channel 5 counters trunk
-------------------------------------------------------------------------------
Port TrunkFramesTx TrunkFramesRx WrongEncap
-------------------------------------------------------------------------------
Related Commands
Command
|
Description
|
clear counters interface port-channel channel-number
|
Clears the statistics for all interfaces that belong to a specific channel group.
|
show interface status
To display the interface line status, use the show interface status command.
show interface status [down | err-disabled | err-vlans | inactive | module number | up]
Syntax Description
down
|
(Optional) Displays the interface down state.
|
err-disabled
|
(Optional) Displays the interface error-disabled state.
|
err-vlans
|
(Optional) Displays the VLANs with errors.
|
inactive
|
(Optional) Displays the interface inactive state.
|
module number
|
(Optional) Limits display to interfaces on module number that you want to display.
|
up
|
(Optional) Displays the interface up state.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
4.1(2)
|
The err-vlans parameter was added.
|
Usage Guidelines
Use the show interface status to display the interface line status.
This command does not require a license.
Examples
This example shows how to display the interface status for a specific module:
switch# show interface status module 2
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth2/1 -- down routed auto auto 1000BaseT
Eth2/2 -- down routed auto auto 1000BaseT
Eth2/3 -- down routed auto auto 1000BaseT
Eth2/4 -- down 1 auto auto 1000BaseT
Eth2/5 -- down routed auto auto 1000BaseT
Eth2/6 -- down 1 auto auto 1000BaseT
Eth2/7 server2 up 1 full 1000 1000BaseT
Eth2/8 -- down routed auto auto 1000BaseT
Eth2/9 -- up 1 full 1000 1000BaseT
Eth2/10 ethernet slot 2 po down 1 auto auto 1000BaseT
Eth2/11 -- down routed auto auto 1000BaseT
Eth2/12 -- down routed auto auto 1000BaseT
Eth2/13 -- down routed auto auto 1000BaseT
Eth2/14 -- down routed auto auto 1000BaseT
Eth2/15 -- down routed auto auto 1000BaseT
Eth2/16 -- down routed auto auto 1000BaseT
Eth2/17 -- down routed auto auto 1000BaseT
Eth2/18 -- down routed auto auto 1000BaseT
Eth2/19 -- down routed auto auto 1000BaseT
Eth2/20 -- down routed auto auto 1000BaseT
Eth2/21 -- down routed auto auto 1000BaseT
Eth2/22 -- down routed auto auto 1000BaseT
Eth2/23 -- down routed auto auto 1000BaseT
Eth2/24 -- down routed auto auto 1000BaseT
Eth2/25 -- down routed auto auto 1000BaseT
Eth2/26 -- down routed auto auto 1000BaseT
Eth2/27 -- down routed auto auto 1000BaseT
Eth2/28 -- down routed auto auto 1000BaseT
Eth2/29 -- down routed auto auto 1000BaseT
Eth2/30 -- down routed auto auto 1000BaseT
Eth2/31 -- down routed auto auto 1000BaseT
Eth2/32 -- down routed auto auto 1000BaseT
Eth2/33 -- down routed auto auto 1000BaseT
Eth2/34 -- down routed auto auto 1000BaseT
Eth2/35 -- down routed auto auto 1000BaseT
Eth2/36 -- down routed auto auto 1000BaseT
Eth2/37 -- down routed auto auto 1000BaseT
Eth2/38 -- down routed auto auto 1000BaseT
Eth2/39 -- down routed auto auto 1000BaseT
Eth2/40 -- down routed auto auto 1000BaseT
Eth2/41 -- down routed auto auto 1000BaseT
Eth2/42 -- down routed auto auto 1000BaseT
Eth2/43 -- down routed auto auto 1000BaseT
Eth2/44 -- down routed auto auto 1000BaseT
Eth2/45 -- down routed auto auto 1000BaseT
Eth2/46 -- down routed auto auto 1000BaseT
Eth2/47 -- down routed auto auto 1000BaseT
Eth2/48 -- down routed auto auto 1000BaseT
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface switchport
To display information about all the switch port interfaces, use the show interface switchport command.
show interface [ethernet type/slot | port-channel channel-number] switchport
Syntax Description
ethernet type/slot | port- channel channel-number
|
(Optional) Type and number of the interface that you want to display.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
4.2(1)
|
Information about private VLAN promiscuous trunk ports was added.
|
Usage Guidelines
If you do not specify an interface, this command displays information about all Layer 2 interfaces, including access, trunk, and port-channel interfaces and all private VLAN ports.
Use the show interface counters command to display statistics for the specified Layer 2 interface.
This command does not require a license.
Examples
This example shows how to display information for all Layer 2 interfaces:
switch# show interface switchport
Switchport Monitor: Not enabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1-3967,4048-4093
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Switchport Monitor: Not enabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1-3967,4048-4093
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Switchport Monitor: Not enabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1-3967,4048-4093
Administrative private-vlan primary host-association: none
Administrative private-vlan secondary host-association: none
Administrative private-vlan primary mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Beginning with Cisco NX-OS Release 4.2(1), you can display information on private VLAN promiscuous trunk ports on Cisco Nexus 7000 Series devices. This example shows how to display information for those interfaces:
switch# show interface switchport
Administrative Mode: private-vlan trunk promiscuous
Administrative Trunking Encapsulation: negotiate
Negotiation of Trunking: on
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan secondary mapping: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: 1, 4, 3000-4000
Administrative private-vlan trunk private VLAN mappings:
2 (VLAN0002) 3 (VLAN0003) 4 (VLAN0004) 5 (VLAN00005)
10 (VLAN0010) 20 (CLAN0020) 30 (VLAN0030) 40 (Inactive)
Operational private-vlan: none
Related Commands
Command
|
Description
|
switchport mode
|
Sets the specified interfaces as either Layer 2 access or trunk interfaces.
|
show interface transceiver
To display the interface transceiver information, use the show interface transceiver command.
show interface transceiver [calibrations | details]
Syntax Description
calibrations
|
(Optional) Show interface transceiver calibrations
|
details
|
(Optional) Show interface transceiver details
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show interface transceiver [calibrations | details] to display the interface line status.
This command does not require a license.
Examples
This example shows how to display the interface transceiver calibrations:
switch# show interface transceiver calibrations
...<additional lines truncated>
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
show interface transceiver
To display information about all the transceiver interfaces, use the show interface transceiver command.
show interface transceiver [calibrations | details]
Syntax Description
calibrations
|
(Optional) Displays calibration information for transceivers.
|
detail
|
(Optional) Displays detailed information for transceivers.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(2)
|
This command was introduced.
|
4.1(2)
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display calibration information for transceiver interfaces:
switch(config)# show interface transceiver calibrations
part number is SPP5101LR-C1
serial number is ECL121601PB
nominal bitrate is 10300 MBits/sec
Link length supported for 9/125um fiber is 10 km(s)
cisco extended id number is 4
SFP External Calibrations Information
----------------------------------------------------------------------
Slope Offset Rx4/Rx3/Rx2/Rx1/Rx0
----------------------------------------------------------------------
Rx Power 0.0000/0.0000/0.0000/0.0000/0.0000
This example shows how to display detailed information for transceiver interfaces:
switch(config)# show interface transceiver detailed
part number is SPP5101SR-C1
serial number is ECL1120017J
nominal bitrate is 10300 MBits/sec
Link length supported for 50/125um fiber is 82 m(s)
Link length supported for 62.5/125um fiber is 26 m(s)
cisco extended id number is 4
SFP Detail Diagnostics Information (external calibration)
----------------------------------------------------------------------------
----------------------------------------------------------------------------
Temperature 25.54 C 75.00 C -5.00 C 70.00 C 0.00 C
Voltage 3.22 V 3.63 V 2.97 V 3.46 V 3.13 V
Current 4.49 mA 10.00 mA 0.00 mA 9.00 mA 0.00 mA
Tx Power -3.50 dBm 2.99 dBm -11.30 dBm -1.00 dBm -7.30 dBm
Rx Power -2.92 dBm 2.99 dBm -13.97 dBm -1.00 dBm -9.91 dBm
----------------------------------------------------------------------------
Related Commands
Command
|
Description
|
show interface
|
Displays information about the specified interfaces.
|
show interface trunk
To display information about all the trunk interfaces, use the show interface trunk command.
show interface [ethernet slot/port | port-channel channel-number] trunk [module number | vlan
vlan-id]
Syntax Description
ethernet slot/port | port- channel channel-number
|
(Optional) Type and number of the interface you want to display.
|
module number
|
(Optional) Specifies the module number.
|
vlan vlan-id
|
(Optional) Specifies the VLAN number.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify an interface, a module number, or a VLAN number, the system displays information for all trunk interfaces.
This command displays information about all Layer 2 trunk interfaces and trunk port-channel interfaces.
Use the show interface counters command to display statistics for the specified Layer 2 interface.
This command does not require a license.
Examples
This example shows how to display information for all Layer 2 trunk interfaces:
switch(config)# show interface trunk
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
Port Vlans Allowed on Trunk
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
Related Commands
Command
|
Description
|
switchport mode trunk
|
Sets the specified interfaces as Layer 2 trunk interfaces.
|
show interface tunnel
To display information about the tunnel interfaces, use the show interface tunnel command.
show interface tunnel number
Syntax Description
number
|
Number of the tunnel interface you want to display information for.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(2)
|
This command was introduced.
|
4.2(1)
|
Display of configured static MAC address added.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display information on tunnel interfaces:
switch(config)# show interface tunnel 5
Tunnel5 is down (Administratively down)
MTU 1476 bytes, BW 9 Kbit
Transport protocol is in VRF "default"
Tunnel protocol/transport GRE/IP
Last clearing of "show interface" counters never
0 packets output, 1 minute output rate 0 packets/sec
0 packets input, 1 minute input rate 0 packets/sec
Related Commands
Command
|
Description
|
show interface
|
Displays information about the specified interfaces.
|
show lacp counters
To display information about Link Aggregation Control Protocol (LACP) statistics, use the show lacp counters command.
show lacp counters [interface port-channel channel-number]
Syntax Description
channel-number
|
(Optional) Number of the LACP channel group. Valid values are from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify the channel-number, all channel groups are displayed.
This command does not require a license.
Examples
This example shows how to display the LACP statistics for a specific channel group:
switch# show lacp counters interface port-channel 1
LACPDUs Marker Marker Response LACPDUs
Port Sent Recv Sent Recv Sent Recv Pkts Err
-----------------------------------------------------------------------------
Ethernet1/1 554 536 0 0 0 0 0
Ethernet1/2 527 514 0 0 0 0 0
Ethernet1/3 535 520 0 0 0 0 0
Ethernet1/4 515 502 0 0 0 0 0
Ethernet1/5 518 505 0 0 0 0 0
Ethernet1/6 540 529 0 0 0 0 0
Ethernet1/7 541 530 0 0 0 0 0
Ethernet1/8 547 532 0 0 0 0 0
Ethernet1/9 544 532 0 0 0 0 0
Ethernet1/10 513 501 0 0 0 0 0
Ethernet1/11 497 485 0 0 0 0 0
Ethernet1/12 493 486 0 0 0 0 0
Ethernet1/13 492 485 0 0 0 0 0
Ethernet1/14 482 481 0 0 0 0 0
Ethernet1/15 481 476 0 0 0 0 0
Ethernet1/16 482 477 0 0 0 0 0
Related Commands
Command
|
Description
|
clear lacp counters
|
Clears the statistics for all LACP interfaces or those interfaces that belong to a specific LACP channel group.
|
show lacp interface
To display information about specific Link Aggregation Control Protocol (LACP) interfaces, use the show lacp interface command.
show lacp interface ethernet slot/port
Syntax Description
slot/port
|
Slot number and port number for the interface you want to display.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The LACP_Activity field displays whether the link is configured in the active or passive port-channel mode.
The Port Identifier field displays the port priority as part of the information. The part of the information in this field is the port number. The following example shows how to identify the port priority and the port number:
Port Identifier=0x8000,0x101
The port priority value is 0x8000, and the port number value is 0x101 in this example.
This command does not require a license.
Examples
This example shows how to display the LACP statistics for a specific channel group:
switch# show lacp interface ethernet 1/1
switch(config-if-range)# show lacp interface eth1/1
Interface Ethernet1/1 is up
Channel group is 1 port channel is Po1
Lag Id: [ [(8000, 0-11-11-22-22-74, 0, 8000, 101), (8000, 0-11-11-22-22-75, 0, 8
Operational as aggregated link since Wed Jun 11 20:37:59 2008
Local Port: Eth1/1 MAC Address= 0-11-11-22-22-74
System Identifier=0x8000,0-11-11-22-22-74
Port Identifier=0x8000,0x101
LACP_Timeout=Long Timeout (30s)
Partner information refresh timeout=Long Timeout (90s)
MAC Address= 0-11-11-22-22-75
System Identifier=0x8000,0-11-11-22-22-75
Port Identifier=0x8000,0x401
LACP_Timeout=Long Timeout (30s)
Related Commands
Command
|
Description
|
show port-channel summary
|
Displays information about all port-channel groups.
|
show lacp neighbor
To display information about Link Aggregation Control Protocol (LACP) neighbors, use the show lacp neighbor command.
show lacp neighbor [interface port-channel channel-number]
Syntax Description
channel-number
|
Port-channel number for the LACP neighbor that you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify the channel-number, all channel groups are displayed.
This command does not require a license.
Examples
This example shows how to display the information about the LACP neighbors for a specific port channel:
switch# show lacp neighbor interface port-channel 1
Flags: S - Device is sending Slow LACPDUs F - Device is sending Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Port System ID Port Number Age Flags
Eth1/1 32768,0-11-11-22-22-750x401 44817 SA
LACP Partner Partner Partner
Port Priority Oper Key Port State
Port System ID Port Number Age Flags
Eth1/2 32768,0-11-11-22-22-750x402 44817 SA
LACP Partner Partner Partner
Port Priority Oper Key Port State
Related Commands
Command
|
Description
|
show port-channel summary
|
Displays information about all port-channel groups.
|
show lacp port-channel
To display information about Link Aggregation Control Protocol (LACP) port channels, use the show lacp port-channel command.
show lacp port-channel [interface port-channel channel-number]
Syntax Description
channel-number
|
Port-channel number for the LACP channel group that you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify the channel-number, all channel groups are displayed.
This command does not require a license.
Examples
This example shows how to display the information about LACP port channels:
switch# show lacp port-channel
Local System Identifier=0x8000,0-11-11-22-22-74
Partner System Identifier=0x8000,0-11-11-22-22-75
Aggregate or individual=1
Local System Identifier=0x8000,0-11-11-22-22-74
Partner System Identifier=0x8000,0-11-11-22-22-75
Aggregate or individual=1
Related Commands
Command
|
Description
|
show port-channel summary
|
Displays information about all port-channel groups.
|
show lacp system-identifier
To display the Link Aggregation Control Protocol (LACP) system identifier for the device, use the show lacp system-identifier command.
show lacp system-identifier
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The LACP system ID is the combination of the configurable LACP system priority value and the MAC address.
Each system that runs LACP has an LACP system priority value. You can accept the default value of 32768 for this parameter, or you can configure a value between 1 and 65535. LACP uses the system priority with the MAC address to form the system ID and also uses the system priority during negotiation with other devices. A higher system priority value means a lower priority.
The system ID is different for each virtual device context (VDC).
This command does not require a license.
Examples
This example shows how to display the information about the LACP port channel for a specific port channel:
switch> show lacp system-identifier
Related Commands
Command
|
Description
|
lacp system-priority
|
Sets the system priority for LACP.
|
show port-channel capacity
To display the number of port channels currently used and the number of port channels that are still available on the device, use the show port-channel capacity command.
show port-channel capacity
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(2)
|
This command was introduced.
|
Usage Guidelines
There are a total of 768 port channels and virtual port channels (vPCs) available on each device.
This command does not require a license.
Examples
This example shows how to display the number of used and available port channels on the device:
switch (config) # show port-channel capacity
768 total 103 used 665 free 13% used
Related Commands
Command
|
Description
|
show port-channel summary
|
Displays information about port channels.
|
show port-channel compatibility-parameters
To display the parameters that must be the same among the member ports in order to join a port channel, use the show port-channel compatibility parameters command.
show port-channel compatibility-parameters
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
When you add an interface to a channel group, the software checks certain interface attributes to ensure that the interface is compatible with the channel group. For example, you cannot add a Layer 3 interface to a Layer 2 channel group. The software also checks a number of operational attributes for an interface before allowing that interface to participate in the port-channel aggregation.
This command displays the list of compatibility checks that the system uses.
Using the channel-group command, you can force ports with incompatible parameters to join the port channel as long as the following parameters are the same:
•(Link) speed capability
•Speed configuration
•Duplex capability
•Duplex configuration
•Flow-control capability
•Flow-control configuration
Note See the channel-group command for information about forcing ports to join a port channel.
This command does not require a license.
Examples
This example shows how to display the list of compatibility checks that the system makes before an interface to a channel group:
switch# show port-channel compatibility-parameters
Members must have the same port mode configured, either E or AUTO. If they
are configured in AUTO port mode, they have to negotiate E mode when they
come up. If a member negotiates a different mode, it will be suspended.
Members must have the same speed configured. If they are configured in AUTO
speed, they have to negotiate the same speed when they come up. If a member
negotiates a different speed, it will be suspended.
Members have to have the same MTU configured. This only applies to ethernet
Members have to have the same medium type configured. This only applies to
Members must have the same span mode.
Members must not have sub-interfaces.
Members must have same Duplex Mode configured.
Members must have same Ethernet Layer (switchport/no-switchport) configured.
Members cannot be SPAN ports.
Members must have same storm-control configured.
Members must have same flowctrl configured.
Members must have common capabilities.
Members port does not exist.
Members must be switching port, Layer 2.
Members must have the same port access VLAN.
Members must have the same port native VLAN.
Members must have the same port allowed VLAN list.
Related Commands
Command
|
Description
|
channel-group
|
Adds or removes interfaces to port-channel groups and assigns the port-channel mode to the interface.
|
show port-channel database
To display information about the current running of the port channels, use the show port-channel database command.
show port-channel database [interface port-channel channel-number]
Syntax Description
channel-number
|
Port-channel number for the information that you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If you do not specify the channel-number, all channel groups are displayed. This command displays Link Aggregation Control Protocol (LACP)-enabled ports channels and port channels without an associated aggregation protocol.
This command does not require a license.
Examples
This example shows how to display information about the current running of all port channels:
switch# show port-channel database
Administrative channel mode is active
Operational channel mode is active
Last membership update is successful
1 ports in total, 0 ports up
Age of the port-channel is 1d:16h:18m:50s
Time since last bundle is 1d:16h:18m:56s
Ports: Ethernet2/5 [down]
Administrative channel mode is active
Operational channel mode is active
Last membership update is successful
1 ports in total, 0 ports up
Age of the port-channel is 1d:16h:18m:50s
Time since last bundle is 1d:16h:18m:56s
Ports: Ethernet2/20 [down]
This example shows how to display information about the current running of a specific port channel:
switch# show port-channel database interface port-channel 20
Administrative channel mode is active
Operational channel mode is active
Last membership update is successful
1 ports in total, 0 ports up
Age of the port-channel is 1d:16h:23m:14s
Time since last bundle is 1d:16h:23m:20s
Ports: Ethernet2/20 [down]
Related Commands
Command
|
Description
|
show port-channel summary
|
Displays a summary of information about all port channels.
|
show port-channel load-balance
To display information about load-balancing using port channels, use the show port-channel load-balance command.
show port-channel load-balance [forwarding-path interface port-channel channel-number]
Syntax Description
forwarding-path interface port-channel
|
(Optional) Identifies the port in the port channel that forwards the packet.
|
channel-number
|
Port-channel number for the load-balancing forwarding path that you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display information about the current port-channel load balancing for the system:
switch# show port-channel load-balance
Port Channel Load-Balancing Configuration:
System: source-dest-ip-vlan
Port Channel Load-Balancing Addresses Used Per-Protocol:
Related Commands
Command
|
Description
|
port-channel load-balance ethernet
|
Configures load balancing using port channels.
|
show port-channel rbh-distribution
To display information about the Result Bundle Hash (RBH) for port channels, use the show port-channel rbh-distribution command.
show port-channel rbh-distribution [interface port-channel channel-number]
Syntax Description
channel-number
|
Port-channel number for the information the you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The RBH value ranges from 0 to 7 and is shared among port members in a port channel.
This command does not require a license.
Examples
This example shows how to display RBH distribution for a specific port channel:
switch# show port-channel rbh-distribution interface port-channel 4
ChanId Member port RBH values Num of buckets
-------- ------------- ----------------- ----------------
Related Commands
Command
|
Description
|
port-channel summary
|
Displays summary information about port channels.
|
show port-channel summary
To display summary information about the port channels, use the show port-channel summary command.
show port-channel summary
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
If the Link Aggregation Control Protocol (LACP) is not enabled, the output shows NONE in the Protocol column of the display.
A channel-group interface can be in the following operational states:
•Down—The interface is down because it is administratively shut down or some other reason not related to port channels.
•Individual—The interface is part of a port channel but unable to aggregate into a port channel because of protocol exchange problems.
–This interface continues to forward traffic as an individual link.
–STP is aware of this interface.
•Suspended—The operational parameters of the interface are not compatible with the port channel. This interface is not forwarding traffic, although the physical MAC link state is still up.
•Switched—The interface is switched.
•Up (port channel)—The port channel is up.
•Up in port channel (members)—The port member of the port channel is up.
•Hot standby (LACP only)—The interface is eligible to join the port group if one of the interfaces currently participating in the LACP channel goes down.
–This interface does not forward data traffic, only protocol data units (PDUs).
–This interface does not run STP.
•Module-removed—The module has been removed.
•Routed—The interface is routed.
This command does not require a license.
Examples
This example shows how to display summary information for the port channels:
switch# show port-channel summary
Flags: D - Down P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended r - Module-removed
-------------------------------------------------------------------
Group Port- Type Protocol Member Ports
-------------------------------------------------------------------
5 Po5(SD) Eth LACP Eth2/5(D)
20 Po20(RD) Eth LACP Eth2/20(D)
Related Commands
Command
|
Description
|
show port-channel usage
|
Displays the port-channel numbers used and available.
|
show port-channel traffic
|
Displays transmitted and received unicast, multicast, and broadcast percentages for the port channels.
|
show port-channel traffic
To display traffic statistics for port channels, use the show port-channel traffic command.
show port-channel traffic [interface port-channel channel-number]
Syntax Description
channel-number
|
Port-channel number for the traffic statistics that you want to display. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command displays the percentage of transmitted and received unicast, multicast, and broadcast traffic about the port channel.
If you do not specify the channel-number, information for all port channels is displayed.
This command does not require a license.
Examples
This example shows how to display the traffic statistics for all port channels:
switch(config)# show port-channel traffic
ChanId Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
5 Eth2/5 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
------ --------- ------- ------- ------- ------- ------- -------
20 Eth2/20 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
This example shows how to display the traffic statistics for a specific port channel:
switch(config)# show port-channel traffic interface port-channel 5
ChanId Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
5 Eth2/5 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Related Commands
Command
|
Description
|
port-channel summary
|
Displays summary information about port channels.
|
show port-channel usage
To display the port-channel numbers used and available, use the show port-channel usage command.
show port-channel usage
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command displays port-channel numbers used and available in the virtual device context (VDC) that you are monitoring.
The number of port-channel numbers available across all VDCs for the entire system is from 1 to 4096.
This command does not require a license.
Examples
This example shows how to display the usage for all port channels:
switch# show port-channel usage
Totally 2 port-channel numbers used
====================================
Unused: 1 - 4 , 6 - 19 , 21 - 4096
Related Commands
Command
|
Description
|
port-channel summary
|
Displays summary information about port channels.
|
show port-profile
To display information about port profiles, use the show port-profile command.
show port-profile [brief | expand-interface [name name] | name name | usage]
Syntax Description
brief
|
(Optional) Displays brief information about the port profiles.
|
expand-interface name name
|
(Optional) Displays the configured attributes at an interface per port profile. An optional name can be specified to show the expanded interface output for that specific port profile.
|
name name
|
(Optional) Displays information for the specified port profile.
|
usage
|
(Optional) Displays a list of interfaces to which each profile is attached.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the show port-profile command to display information about the configured port profiles on the device. It displays all configured port profiles.
Port profiles are not aware of default values, so the default value configuration appears in the port profiles. For example, MTU 1500 is a default value and does not appear in the running-config display of an interface. However, because port profiles are unaware of default values, MTU 1500 appears in the port-profile display.
This command does not require a license.
Examples
These examples show how to display information about port profiles:
switch(config)# show port-profile
evaluated config attributes:
evaluated config attributes:
switch(config)# show port-profile brief
----------------------------------------------------------
Port Profile Conf Eval Assigned Child
Profile State Items Items Intfs Profs
----------------------------------------------------------
switch(config)# show port-profile expand-interface
switch(config)# show port-profile name try1
evaluated config attributes:
switch(config)# show port-profile usage
This example shows how to display port profiles and values that you have entered in interface configuration mode using the show running-config command:
switch(config)# show running-config interface ethernet 8/5
Related Commands
Command
|
Description
|
port-profile
|
Configures, names, and allows you to enter port-profile configuration mode.
|
inherit port-profile
|
Assigns port profile to specified interfaces and allows one port profile to inherit configuration parameters from another port profile.
|
show running-config interface
To display the running configuration for a specific interface, use the show running-config interface command.
show running-config interface [all | {ethernet {slot/port} [all]} | expand-port-profile |
{loopback {number} [all]} | {mgmt0 [all]} | {port-channel {channel-number}
[membership]} | {tunnel {number} [all]} | {vlan {vlan-id} [all]}
Syntax Description
all
|
Shows configuration with defaults.
|
ethernet slot/port
|
Number of the module and port number.
|
expand-port-profile
|
Shows port profiles.
|
loopback number
|
Number of the loopback interface. The range of values is from 1 to 4096.
|
port-channel channel-number
|
Number of the port-channel group. The range of values is from 0 to 1023.
|
membership
|
Membership of the specified port channel.
|
tunnel number
|
Number of the tunnel interface. The range of values is from 0 to 65535.
|
vlan vlan-id
|
Number of the VLAN. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
4.2(1)
|
The expand-port-profile parameter was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display information about the running configuration for a specific Ethernet interface:
switch(config)# show running-config interface ethernet 2/7
description Ethernet port 3 on module 1
This example shows how to display information about the running configuration for a specific range of Ethernet interfaces:
switch(config)# show running-config interface ethernet 2/7 - 9
description Ethernet port 3 on module 1
This example shows how to display information about the running configuration for a specific loopback interface:
switch(config)# interface loopback 345
switch(config-if)# show running-config interface loopback 345
This example shows how to display the running configuration for a specific port channel:
switch(config)# show running-config interface port-channel 10
This example shows how to display information about the running configuration for VLAN interface:
switch(config)# show running-config interface vlan 50
Related Commands
Command
|
Description
|
interface
|
Enters the interface configuration mode, and configures the types and identities of interfaces.
|
interface vlan
|
Creates a VLAN interface and enters interface configuration mode.
|
show interface ethernet
|
Displays information about the Ethernet interface.
|
show port-channel summary
|
Displays a summary of port-channel information.
|
show running-config
|
Displays the running configuration on the device.
|
show running-config interface mgmt
To display the running configuration for a specific management interface, use the show running-config interface mgmt command.
show running-config interface mgmt {number}
Syntax Description
number
|
Show management interface number you want to display. The range is 0-0.
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show running-config interface mgmt command to display the running configuration for a management interface.
This command does not require a license.
Examples
This example shows how to display information about the running configuration for management interface 0:
switch# show running-config interface mgmt 0
ip address 172.28.231.193/23
Related Commands
Command
|
Description
|
show interface mgmt
|
Displays the management interface information.
|
show running-config vpc
To display the running configuration information for virtual port channels (vPCs), use the show running-config vpc command.
show running-config vpc [all]
Syntax Description[
all
|
(Optional) Displays running configuration for vPC with defaults.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display the running configuration for a vPC:
switch (config)# show running-config vpc
peer-keepalive destination 10.10.76.52 source 10.10.76.51 udp-port 3200 vrf ma
engagement interval 1000 timeout 5
interface port-channel101
interface port-channel200
interface port-channel201
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, this command returns an error.
|
show startup-config interface
To display interface configuration information in the startup-configuration, use the show startup-config interface command.
show startup-config interface [ethernet slot/port | expand-port-profile | loopback number |
mgmt0 | port-channel {channel-number} [membership] | tunnel number | {vlan vlan-id}
Syntax Description
ethernet slot/port
|
Number of the module and port number.
|
expand-port-profile
|
Shows port profiles.
|
loopback number
|
Number of the loopback interface. The range of values is from 1 to 4096.
|
port-channel channel-number
|
Number of the port-channel group. The range of values is from 0 to 1023.
|
membership
|
Membership of the specified port channel.
|
tunnel number
|
Number of the tunnel interface. The range of values is from 0 to 65535.
|
vlan vlan-id
|
Number of the VLAN. The range of values is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(2)
|
This command was introduced.
|
4.2(1)
|
The expand-port-profile parameter was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display the information in the startup configuration for the interface Ethernet 7/1:
switch(config)# show startup-config interface ethernet 7/1
Related Commands
Command
|
Description
|
show interface
|
Displays information about the specified interface.
|
show startup-config vpc
To display virtual port-channel (vPC) configuration information in the startup-configuration, use the show startup-config vpc command.
show startup-config vpc [all]
Syntax Description[
all
|
(Optional) Displays startup-configuration information for all vPCs.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to display the vPC information in the startup configuration:
switch(config)# show startup-config vpc
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
show udld
To display information about the UDLD configuration, use the show udld command.
show udld [ethernet slot/port | global | neighbors]
Syntax Description
ethernet slot/port
|
(Optional) Show Ethernet slot and port number you want to display.
|
global
|
(Optional) Show UDLD global status and configuration on all interfaces
|
neighbors
|
(Optional) Show UDLD neighbor interfaces
|
Command Default
None
Command Modes
Any command mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the show udld command to display information about the UDLD configuration for an interface. UDLD must be enabled on the device before you can display this command; enter the feature udld command to enable UDLD globally on the device.
This command does not require a license.
Examples
This example shows how to display information about the UDLD configuration for Ethernet port 2/7:
switch# show udld ethernet 2/7
--------------------------------
Port enable administrative configuration setting: disabled
Port enable operational state: disabled
Current bidirectional state: unknown
Current operational state: udld-init - Multiple neighbor not detected
Related Commands
Command
|
Description
|
udld
|
Configures the ports to use a UDLD mode.
|
feature udld
|
Enables UDLD globally on device.
|
show vpc brief
To display brief information about the virtual port channels (vPCs), use the show vpc brief command.
show vpc brief [vpc number]
Syntax Description
vpc number
|
(Optional) Displays the brief information for the specified vPC. The range is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
4.2(1)
|
Display showing the number of configured vPCs was added.
|
4.2(1)
|
Display showing track object, if configured, was added.
|
Usage Guidelines
The show vpc brief command displays the vPC domain ID, the peer-link status, the keepalive message status, whether the configuration consistency is successful, and whether peer-link formed or the failure to form.
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
Beginning with Cisco Release 4.2(1), you can display the track object, if you have configured a tracked object for running vPCs on a single module under the vpc-domain configuration mode. See the Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 4.2 for information on this feature.
This command does not require a license.
Examples
This example shows how to display brief information about the vPCs:
switch(config)# show vpc brief
(*) - local vpc is down, forwarding via vPC peer-link
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status: success
Number of vPC configured : 1
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
----------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
-- ---- ------ ----------- -------------------------- ------------
20 Po20 up success success 1-100
This example also shows how to display brief information about the vPCs. In this example, the port channel failed the consistency check, and the device displays the reason for the failure:
switch(config)# show vpc brief
(*) - local vpc is down, forwarding via vPC peer-link
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status: failed
Configuration consistency reason: vPC type-1 configuration incompatible - STP interface
port type inconsistent
Number of vPC configured : 1
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
----------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
-- ---- ------ ----------- -------------------------- ------------
20 Po20 up failed vPC type-1 configuration -
This example also shows how to display information about the tracked objects in the vPCs, which is available beginning in Cisco NX-OS Release 4.2(1):
switch(config)# show vpc brief
(*) - local vpc is down, forwarding via vPC peer-link
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status: success
Number of vPC configured : 3
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
Related Commands
Command
|
Description
|
feature vpc
|
Enables vPCs on the device.
|
show port channel summary
|
Displays information about port channels.
|
show vpc consistency-parameters
To display the consistency of parameters that must be compatible across the virtual port-channel (vPC) interfaces, use the show vpc consistency-parameters command.
show vpc consistency-parameters {global | interface port-channel channel-number | vpc
number}}
Syntax Description
global
|
(Optional) Displays the configuration of all Type 1 global parameters on both sides of the vPC peer link.
|
interface port-channel channel- number
|
(Optional) Displays the configuration of all Type 1 interface parameters on both sides of the vPC peer link.
|
vpc number
|
(Optional) Displays the configuration of all Type 1 interface parameters on both sides of the vPC peer link for the specified vPC.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
4.2(1)
|
Display of local suspended VLANs was added.
Note The command does not display the vPC peer device's suspended VLANs.
|
4.2(1)
|
vpc argument was added.
|
Usage Guidelines
The show vpc consistency-parameters command displays the configuration of all the vPC Type 1 parameters on both sides of the vPC peer link.
Note All the Type 1 configurations must be identical on both sides of the vPC peer link, or the link will not come up.
The vPC Type 1 configuration parameters are as follows:
•Port-channel mode: on, off, or active
•Link speed per channel
•Duplex mode per channel
•Trunk mode per channel
–Native VLAN
–VLANs allowed on trunk
–Tagging of native VLAN traffic
•Spanning Tree Protocol (STP) mode
•STP region configuration for Multiple Spanning Tree
•Enable/disable state the same per VLAN
•STP global settings
–Bridge Assurance setting
–Port type setting—We recommend that you set all vPC peer link ports as network ports.
–Loop Guard settings
•STP interface settings:
–Port type setting
–Loop Guard
–Root Guard
•Maximum transmission unit (MTU)
•Allowed VLAN bit set
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
This command does not require a license.
Examples
This example shows how to display the vPC consistency parameters for the specified port channel:
switch (config)# show vpc consistency-parameters global
Type 1 : vPC will be suspended in case of mismatch
Name Type Local Value Peer Value
------------- ---- ------------------------ --------------------------
STP Mode 1 Rapid-PVST Rapid-PVST
STP Loopguard 1 Disabled Disabled
STP Bridge 1 Enabled Enabled
STP Port Type 1 Normal Normal
Allowed VLAN - 1-100 1-100
This example shows how to display the vPC consistency parameters for the specified port channel:
switch (config)# show vpc consistency-parameters interface port-channel 20
Type 1 : vPC will be suspended in case of mismatch
Name Type Local Value Peer Value
------------- ---- ------------------------ --------------------------
STP Port Type 1 Default Default
Allowed VLAN - 1-100 1-100
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
show port channel summary
|
Displays information about port channels.
|
show vpc orphan-ports
To display ports that are not part of the virtual port channel (vPC) but have common VLANs, use the show vpc orphan-ports command.
show vpc orphan-ports
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
The show vpc orphan-ports command displays those ports that are not part of the vPC but that share common VLANs with ports that are part of the vPC.
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
This command does not require a license.
Examples
This example shows how to display vPC orphan ports:
switch(config)# show vpc orphan ports
--------::Going through port database. Please be patient.::--------
------- -------------------------
Related Commands
Command
|
Description
|
feature vpc
|
Enables vPCs on the device.
|
show vpc brief
|
Displays brief information about vPCs.
|
show vpc peer-keepalive
To display the destination IP for the virtual port-channel (vPC) peer keepalive message and the status of the messages, use the show vpc peer-keepalive command.
show vpc peer-keepalive
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
The show vpc peer-keepalive command displays the destination IP of the peer keepalive message for the vPC. The command also displays the send and receive status as well as the last update from the peer in seconds and milliseconds
Note We recommend that you create a separate VRF on the peer devices to send and receive the vPC peer keepalive messages. Do not use the peer link itself to send the vPC peer-keepalive messages.
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
This command does not require a license.
Examples
This example shows how to display information about the peer-keepalive message:
n7k-2(config-vpc-domain)# show vpc peer-keepalive
vPC keep-alive status : peer is alive
--Last send at : 2008.05.17 18:23:53 986 ms
--Sent on interface : Eth7/16
--Receive status : Success
--Last receive at : 2008.05.17 18:23:54 99 ms
--Received on interface : Eth7/16
--Last update from peer : (0) seconds, (486) msec
vPC Keep-alive parameters
--Destination : 172.23.145.213
--Keepalive interval : 1000 msec
--Keepalive timeout : 5 seconds
--Keepalive hold timeout : 3 seconds
--Keepalive udp port : 3200
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
show vpc role
To display information about the virtual port-channel (vPC) role of the peer device, use the show vpc role command.
show vpc role
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
The show vpc role command displays the following information about the vPC status:
•Status of peer adjacency
•vPC role of the VDC that you are working on
•vPC MAC address
•vPC system priority
•MAC address of the device that you are working on
•System priority for the device that you are working on
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
This command does not require a license.
Examples
This example shows how to display the vPC role information of the device that you are working on:
switch (config)# show vpc role
----------------------------------------------------
Dual Active Detection Status : 0
vPC system-mac : 00:23:04:ee:be:01
vPC system-priority : 32667
vPC local system-mac : 00:22:55:79:ea:c1
vPC local role-priority : 32667
----------------------------------------------------
Dual Active Detection Status : 0
vPC system-mac : 00:23:04:ee:be:01
vPC system-priority : 32667
vPC local system-mac : 00:22:55:79:de:41
vPC local role-priority : 32667
When you reload the primary vPC peer device, the secondary vPC peer device assumes the role of primary device. The following example shows how the vPC role displays then on the new primary device:
switch (config)# show vpc role
----------------------------------------------------
vPC role : secondary, operational primary
Dual Active Detection Status : 0
vPC system-mac : 00:23:04:ee:be:64
vPC system-priority : 32667
vPC local system-mac : 00:22:55:79:de:41
vPC local role-priority : 32667
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
show port channel summary
|
Displays information about port channels.
|
show vpc statistics
To display virtual port-channel (vPC) statistics, use the show vpc statistics command.
show vpc statistics {peer-keepalive | peer-link | vpc number}
Syntax Description[
peer-keepalive
|
Displays statistics about the peer-keepalive message.
|
peer-link
|
Displays statistics about the peer link.
|
vpc number
|
Displays statistics about the specified vPC. The range is from 1 to 4096.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
The peer-link parameter displays the same information as the show interface port-channel channel number command for the vPC peer-link port channel.
The vpc number parameter displays the same information as the show interface port-channel channel number command for the specified vPC port channel.
This command is not available if you have not enabled the vPC feature. See feature vpc for information on enabling vPCs.
This command does not require a license.
Examples
This example shows how to display statistics about the peer-keepalive message:
switch# show vpc statistics peer-keepalive
vPC keep-alive status : peer is alive
VPC keep-alive statistics
----------------------------------------------------
peer-keepalive tx count: 1036
peer-keepalive rx count: 1028
average interval for peer rx: 995
Count of peer state changes: 1
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
show port channel summary
|
Displays information about port channels.
|
shutdown
To bring the port administratively down, use the shutdown command.
To bring the port administratively up, use the no shutdown command.
shutdown [force]
no shutdown [force]
Syntax Description
force
|
(Optional) Force the interface state to change. When you shutdown a management interface, a warning question is displayed regarding active telnet sessions. You can bypass the question with the force option. The force option is also useful when you run an automated configuration playback.
The force option is only available for Ethernet interfaces or the management port.
|
Command Default
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the shutdown command to bring the port administratively down. Use the no shutdown command to bring the port administratively up.
This command does not require a license.
Examples
This example shows how to bring the port administratively down:
switch(config-if)# shutdown
This example shows how to bring the port administratively up:
switch(config-if)# no shutdown
Related Commands
Command
|
Description
|
interface ethernet
|
Configures the types and identities of Ethernet interfaces.
|
speed
To set the speed for Ethernet ports or management interfaces or set the port to autonegotiate its speed with other ports on the link, use the speed command.
speed {10 | 100 | 1000 | 10000 | auto [10 [100 [1000]]]}
Syntax Description
10
|
Sets the speed at 10 Mbps.
|
100
|
Sets the speed at 100 Mbps.
|
1000
|
Sets the speed at 1 Gbps.
|
10000
|
Sets the speed at 10 Gbps.
|
auto
|
Sets the interface to autonegotiation.
|
Command Default
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Before you begin, make sure that the remote port has a speed setting that supports your changes for the local port. If you want to set the local port to use a specific speed, you must set the remote port for the same speed or set the local port to autonegotiate the speed.
The interface speed and duplex mode are interrelated, so you should configure both of their parameters at the same time.
The interface speed that you specify can affect the duplex mode used for an interface, so you should set the speed before setting the duplex mode. If you set the speed for autonegotiation, the duplex mode is automatically set to be autonegotiated. If you specify 10- or 100-Mbps speed, the port is automatically configured to use half-duplex mode, but you can specify full-duplex mode instead. If you specify a speed of 1000 Mbps (1 Gbps) or faster, full duplex is automatically used. For more details about configuring this command, see the Cisco NX-OS Interfaces Configuration Guide.
This command does not require a license.
Examples
This example shows how to set the speed of Ethernet port 1 on the 48-port 10/100/1000 module in slot 3 to 1000 Mbps and full-duplex mode:
switch(config)# interface ethernet 3/1
switch(config-if)# speed 1000
switch(config-if)# duplex full
Related Commands
Command
|
Description
|
duplex
|
Specifies the duplex mode as full, half, or autonegotiate.
|
show interface
|
Displays the interface status, which includes the speed parameters.
|
state enabled
To enable the specified port profile, use the state enabled command. To return to the default value, use the no form of this command.
state enabled
no state enabled
Syntax Description
This command has no keywords or arguments.
Defaults
Disabled
Command Modes
Port-profile configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Use the state enabled command to enable the specified port profile. See the port-profile command for information about the port-profile feature.
To apply the port-profile configurations to the interfaces, you must enable the specific port profile. You can configure and inherit a port profile onto a range of interfaces prior to enabling the port profile; you would then enable that port profile for the configurations to take effect on the specified interfaces. The maximum number of interfaces that can inherit a single profile is 512.
If you inherit one or more port profiles onto an original port profile, only the last inherited port profile must be enabled; the system assumes that the underlying port profiles are enabled.
This command does not require a license.
Examples
This example shows how to enable the port-profile feature:
switch(config)# port-profile type ethernet test
switch(config-ppm)# state enabled
Related Commands
Command
|
Description
|
show port-profile
|
Displays information about the port profiles.
|
switchport
To set the interface as a Layer 2 switching port, use the switchport command. To return the interface to the default Layer 3 routed interface status and cause all Layer 2 configuration to be erased, use the no form of this command.
switchport
no switchport
Syntax Description
This command has no keywords or arguments.
Defaults
Interfaces are Layer 3 by default.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter additional switchport commands with keywords. This action is required only if you have not entered the switchport command for the interface.
The default switchport mode is the access mode. Use the switchport mode command to do the following:
•Set the interface to the Layer 2 access mode
•Return the interface to the Layer 2 trunk mode
•Use the interface with private VLANs.
Enter the no switchport command to shut down the port and then reenable it. This action may generate messages on the device to which the port is connected.
When you use the no switchport command, all the Layer 2 configuration is deleted from that interface, and the interface will have the default VLAN configuration.
The port will go down and reinitialize when you change the interface mode.
This command does not require a license.
Examples
This example shows how to cause a port interface to stop operating as a Cisco routed port and convert to a Layer 2 switched interface:
switch(config-if)# switchport
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
switchport access vlan
To set the access VLAN when the interface is in access mode, use the switchport access vlan command. To reset the access-mode VLAN to the appropriate default VLAN for the device, use the no form of this command.
switchport access vlan vlan-id
no switchport access vlan
Syntax Description
vlan-id
|
VLAN to set when the interface is in access mode; valid values are from 1 to 4094, except for the VLANs reserved for internal switch use.
|
Defaults
VLAN1
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter the switchport access vlan command. This action is required only if you have not entered the switchport command for the interface.
Enter the no switchport access vlan command to shut down the port and then reenable it. This action may generate messages on the device to which the port is connected.
Use the no form of the switchport access vlan command to reset the access-mode VLAN to the appropriate default VLAN for the device.
This command does not require a license.
Examples
This example shows how to cause a port interface that has already been configured as a switched interface to operate as an access port in VLAN 2 instead of the platform's default VLAN in the interface-configuration mode:
switch(config-if)# switchport access vlan 2
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
switchport host
To configure a port that is not connected to any other devices as a Layer 2 access port with optimized packet forwarding, use the switchport host command. To disable a port that is not connected to any other devices as a Layer 2 access, use the no form of this command.
switchport host
no switchport host
Syntax Description
This command has no keywords or arguments.
Defaults
Interfaces are Layer 3 by default.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter the switchport host command. This action is required only if you have not entered the switchport command for the interface.
Entering the switchport host command on an interface:
•Makes the Layer 2 interface an access port.
•Makes the Layer 2 interface an STP edge port, which decreases the time that it takes to start up packet forwarding.
•Disables port channeling on this interface.
You should enter the switchport host command only on ports that are connected to a single host. When you use this command with an interface connected to other than a single host, the device returns an error message.
To optimize the port configuration, entering the switchport host command sets the switch port mode to access and disables channel grouping. Only an end station can accept this configuration.
This command toggles the port if it is in the UP state.
This command does not require a license.
Examples
This example shows how to optimize an access port configuration for a host connection:
switch(config-if)# switchport host
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
switchport mode
To set the Layer 2 interface type, use the switchport mode command. To return the interface to the Layer 2 access mode, use the no form of this command.
switchport mode {access | trunk}
no switchport mode
Syntax Description
access
|
Specifies the interface as a nontrunking, nontagged single-VLAN Layer 2 interface. An access port carry traffic in one VLAN only.
|
trunk
|
Specifies the trunking VLAN interface in Layer 2. A trunk port can carry traffic in one or more VLANs (based on the trunk allowed VLAN list configuration) on the same physical link.
|
Defaults
access ports
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter the switchport mode command. This action is required only if you have not entered the switchport command for the interface.
If you enter access mode, the interface goes into nontrunking mode; if you enter trunk mode, the interface goes into trunking mode.
To correctly deliver the traffic on a trunk port with several VLANs, the switch uses the IEEE 802.1Q encapsulation, or tagging, method. If an access port receives a packet with an 802.1Q tag in the header, that port drops the packet without learning its MAC source address.
Note A port can function as either an access port, a trunk port, or a private VLAN port; a port cannot function as all three simultaneously.
The port will go down and reinitialize when you change the interface mode.
This command does not require a license.
Examples
This example shows how to set the interface to trunking mode:
switch(config-if)# switchport mode trunk
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
switchport trunk allowed vlan
To set the list of allowed VLANs on the trunking interface, use the switchport trunk allowed vlan command. To allow all VLANs on the trunking interface, use the no form of this command.
switchport trunk allowed vlan {vlan-list | add vlan-list | all | except vlan-list | none | remove
vlan-list}
no switchport trunk allowed vlan
Syntax Description
vlan-list
|
Allowed VLANs that transmit through this interface in tagged format when in trunking mode; the range of valid values is from 1 to 4094.
|
add
|
Adds the defined list of VLANs to those currently set instead of replacing the list.
|
all
|
Allows all appropriate VLANs to transmit through this interface in tagged format when in trunking mode.
|
except
|
Allows all VLANs to transmit through this interface in tagged format when in trunking mode except the specified values.
|
none
|
Blocks all VLANs transmitting through this interface in tagged format when in trunking mode.
|
remove
|
Removes the defined list of VLANs from those currently set instead of replacing the list.
|
Defaults
All VLANs
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter the switchport trunk allowed vlan command. This action is required only if you have not entered the switchport command for the interface.
You can enter the switchport trunk allowed vlan command on interfaces where the Switched Port Analyzer (SPAN) destination port is either a trunk or an access port.
If you remove VLAN 1 from a trunk, the trunk interface continues to send and receive management traffic in VLAN 1.
This command does not require a license.
Examples
This example shows how to add a series of consecutive VLANs to the list of allowed VLANs on a trunking port:
switch(config-if)# switchport trunk allowed vlan add 40-50
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
switchport trunk native vlan
To change the native VLAN ID when the interface is in trunking mode, use the switchport trunk native vlan command. To return the native VLAN ID to VLAN 1, use the no form of this command.
switchport trunk native vlan vlan-id
no switchport trunk native vlan
Syntax Description
vlan-id
|
Native VLAN for the trunk in 802.1Q trunking mode. The range of valid values is from 1 to 4094, except the internally reserved VLANs 3968 to 4047 and 4094.
|
Defaults
VLAN1
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
You must enter the switchport command without any keywords to configure the LAN interface as a Layer 2 interface before you can enter the switchport trunk native vlan command. This action is required only if you have not entered the switchport command for the interface.
Note See the vlandot1q tag native command for more information about configuring the native VLAN for 802,1Q trunk ports.
Use the no form of the native vlan command to reset the native mode VLAN to the default VLAN1 for the device.
This command does not require a license.
Examples
This example shows how to configure the native VLAN for an interface in trunk mode:
switch(config-if)# switchport trunk native vlan 5
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
system default switchport
To change the default interface mode for the system from Layer 3 routing to Layer 2 switching. use the system default switchport command. To return the system to Layer 3 routing default interface mode, use the no form of this command.
system default switchport [shutdown]
no system default switchport [shutdown]
Syntax Description
shutdown
|
(Optional) Configures administrative state as down.
|
Defaults
None
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
The system default switchport command makes all the interfaces Layer 2 access ports.
This command does not require a license.
Examples
This example shows how to configure the system so that all the interfaces are in Layer 2 access mode:
switch(config-if)# system default switchport
Related Commands
Command
|
Description
|
show interface switchport
|
Displays the administrative and operational status of a switching (nonrouting) port.
|
system jumbomtu
To configure the system jumbo MTU size for Layer 2 interfaces, use the system jumbomtu command.
system jumbomtu size
Syntax Description
size
|
Specify an even number between the values of 1500 and 9216.
|
Command Default
The system jumbo MTU default size is 1500 bytes.
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the system jumbomtu command to specify the MTU size for Layer 2 interfaces. The range of configurable values are 1500 to 9216 bytes.
The physical level uses an unchangeable bandwidth of 1 GB.
This command does not require a license.
Examples
This example shows how to configure the system jumbo MTU as 8000 bytes and how to change the MTU specification for an interface that was configured with the previous jumbo MTU size:
switch(config)# system jumbomtu 8000
switch(config)# show running-config
switch(config)# interface ethernet 2/2
switch(config-if)# switchport
switch(config-if)# mtu 4608
Related Commands
Command
|
Description
|
show running-config
|
Displays the current operating configuration, which includes the system jumbo MTU size.
|
system-mac
To overwrite the MAC address that the device creates for the virtual port-channel (vPC) domain when you create a vPC domain, use the system-mac command. To return to the default vPC system MAC address, use the no form of this command.
system-mac mac-address
no system-mac
Syntax Description[
mac-address
|
MAC address that you want for the vPC domain using the format xxxx.xxxx.xxxx.
|
Defaults
None
Command Modes
vpc-domain command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC system MAC address.
Use the system-mac command to overwrite the MAC address created by the system once you create a vPC domain. By default, the system creates a MAC address for the vPC when you create a vPC domain based on the domain ID. Cisco reserved a range of MAC addresses from the IEEE for this purpose and these addresses will be used to complete the last 10 bits of the vPC domain MAC address. The range of default MAC addresses is as follows:
•Number of reserved MAC addresses—1024
•Starting—002304eebe00
•Ending—002304eec1ff
This command does not require a license.
Examples
This example shows how to create a vPC system MAC address:
switch(config)# vpc domain 5
switch(config-vpc-domain)# system-mac 22cd.34ab.ca32
Related Commands
Command
|
Description
|
show vpc role
|
Displays the system MAC address for the vPC domain.
|
system-priority
To overwrite the system priority that the device creates for the virtual port-channel (vPC) domain when you create a vPC domain, use the system-priority command. To return to the default vPC system priority, use the no form of this command.
system-priority priority
no system-priority priority
Syntax Description[
priority
|
System priority. The range is from 1 to 65535.
|
Defaults
32667
Command Modes
vpc-domain command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC system priority.
Note We recommend that you manually configure the vPC system priority when you are running LACP to ensure that the vPC peer devices are the primary devices on LACP.
This command does not require a license.
Examples
This example shows how to create a vPC system priority:
switch(config)# vpc domain 5
switch(config-vpc-domain)# system-priority 4000
Related Commands
Command
|
Description
|
show vpc role
|
Displays the system priority for the vPC domain.
|
track
To configure the system to monitor the track-list object that contains all the virtual port-channel (vPC) links to the core and to the vPC peer link when you are using only a single module for all links, use the track command. To return to the default, use the no form of this command.
track track-object-id
no track track-object-id
Syntax Description
track-object-id
|
Track-list object that you already configured.
|
Defaults
No tracking
Command Modes
vpc configuration mode
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
Beginning with Release 4.2, if you must configure all the vPC peer links and core-facing interfaces on a single N7K-M132XP-12 module, you should configure a track object and a track list that is associated with the Layer 3 link to the core and on all vPC peer links on both vPC peer devices. You can use this configuration to avoid dropping traffic if that particular module goes down because when all the tracked objects on the track list go down, the system does the following:
•Stops the vPC primary peer device sending peer-keepalive messages which forces the vPC secondary peer device to take over.
•Brings down all the downstream vPCs on that vPC peer device, which forces all the traffic to be rerouted in the access switch toward the other vPC peer device.
Once you configure this feature and if the module fails, the system automatically suspends all the vPC links on the primary vPC peer device and stops the peer-keepalive messages. This action forces the vPC secondary device to take over the primary role and all the vPC traffic to go to this new vPC primary device until the system stabilizes.
Create a track list that contains all the links to the core and all the vPC peer links as its object. Enable tracking for the specified vPC domain for this track list. Apply this same configuration to the other PC peer device. See the Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.2, for information about configuring object tracking and track lists.
This command does not require a license.
Examples
This example shows how to put the previously configured track-list object into the vPC domain on the vPC peer device:
switch(config)# vpc domain 5
switch(config-vpc-domain)# track object 5
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information on a vPC tracked object.
|
feature vpc
|
Enables vPCs on the device.
|
tunnel destination
To configure the destination endpoint for a tunnel, use the tunnel destination command in interface configuration mode. To remove the tunnel destination, use the no form of this command.
tunnel destination {ip-address | host-name}
no tunnel destination {ip-address | host-name}
Syntax Description
ip-address
|
IP address for the tunnel destination.
|
host-name
|
Host name for the tunnel destination.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the tunnel destination command to configure the destination address for an IP tunnel.
You should not have two tunnels using the same encapsulation mode with the same source and destination address.
This command requires the Enterprise license.
Examples
This example shows how to configure the tunnel destination:
switch(config-if)# tunnel destination 192.0.2.120
Related Commands
Command
|
Description
|
tunnel source
|
Sets the source of the IP tunnel.
|
interface tunnel
|
Creates the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
tunnel mode
To configure the tunnel encapsulation mode for a tunnel, use the tunnel mode command in interface configuration mode. To restore the default value, use the no form of this command.
tunnel mode gre {ip | ipv6}
no tunnel mode gre {ip | ipv6}
Syntax Description
ip
|
Configures this tunnel encapsulation mode as IPv4.
|
ip v6
|
Configures this tunnel encapsulation mode as IPv6.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the tunnel mode command to configure the tunnel encapsulation mode for a tunnel.
This command requires the Enterprise license.
Examples
This example shows how to configure the tunnel mode:
switch(config-if)# tunnel mode gre ip
Related Commands
Command
|
Description
|
tunnel destination
|
Sets the destination of the IP tunnel.
|
interface tunnel
|
Creates the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
tunnel path-mtu-discovery
To enable Path MTU Discovery (PMTUD) on a tunnel interface, use the tunnel path-mtu-discovery command in interface configuration mode. To disable PMTUD on a tunnel interface, use the no form of this command.
tunnel path-mtu-discovery [age-timer {aging-mins | infinite} | min-mtu mtu-bytes]
no tunnel path-mtu-discovery [age-timer {aging-mins | infinite} | min-mtu mtu-bytes]
Syntax Description
age-timer
|
(Optional) Sets a timer to run for a specified interval, in minutes, after which the tunnel interface resets the maximum transmission unit (MTU) of the path to the default tunnel MTU minus 24 bytes for GRE tunnels or minus 20 bytes for IP-in-IP tunnels.
|
aging-mins
|
Number of minutes. The range is from 10 to 30. The default is 10.
|
infinite
|
Disables the age timer.
|
min-mtu mtu-bytes
|
(Optional) Specifies the minimum Path MTU across GRE tunnels. The range is from 92 to 65535 bytes. The default is 92.
|
Defaults
Disabled
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
When PMTUD (RFC 1191) is enabled on a tunnel interface, the router performs PMTUD processing for the tunnel IP packets. The router always performs PMTUD processing on the original data IP packets that enter the tunnel. When PMTUD is enabled, no packet fragmentation occurs on the encapsulated packets that travel through the tunnel. Without packet fragmentation, there is a better throughput of TCP connections. PMTUD maximizes the use of available bandwidth in the network between the endpoints of a tunnel interface.
After PMTUD is enabled, the Don't Fragment (DF) bit of the IP packet header that is forwarded into the tunnel is copied to the IP header of the external IP packets. The external IP packet is the encapsulating IP packet. Adding the DF bit allows the PMTUD mechanism to work on the tunnel path of the tunnel. The tunnel endpoint listens for Internet Control Message Protocol (ICMP) unreachable too-big messages and modifies the IP MTU of the tunnel interface, if required.
When the aging timer is configured, the tunnel code resets the tunnel MTU after the aging timer expires. After the tunnel MTU is reset, a set of full-size packets with the DF bit set is required to trigger the tunnel PMTUD and lower the tunnel MTU. At least two packets are dropped each time that the tunnel MTU changes.
When PMTUD is disabled, the DF bit of an external (encapsulated) IP packet is set to zero even if the encapsulated packet has a DF bit set to one.
The min-mtu keyword sets a low limit through the MTU that can be learned through the PMTUD process. Any ICMP signal received that specifies an MTU less than the minimum MTU configured will be ignored. You can use this feature to prevent a denial- of-service attack from any node that can send an ICMP message to the router that specifies a very small MTU.
Note PMTUD on a tunnel interface requires that the tunnel endpoint is able to receive ICMP messages generated by routers in the path of the tunnel. You should check that ICMP messages can be received before you use PMTUD over firewall connections.
This command requires the Enterprise license.
Examples
This example shows how to configure PMTUD:
switch(config-if)# tunnel path-mtu-discovery
Related Commands
Command
|
Description
|
tunnel destination
|
Sets the destination of the IP tunnel.
|
interface tunnel
|
Creates the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
tunnel source
To configure the source endpoint for a tunnel, use the tunnel source command in interface configuration mode. To remove the tunnel source, use the no form of this command.
tunnel source {ip-address | interface-type number}
no tunnel source [ip-address | interface-type number]
Syntax Description
ip-address
|
IP address for the tunnel source.
|
interface-type number
|
Interface for the tunnel source.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the tunnel source command to configure the source address for an IP tunnel.
You should not have two tunnels using the same encapsulation mode with the same source and destination address.
This command requires the Enterprise license.
Examples
This example shows how to set the tunnel source:
switch(config-if)# tunnel source 192.0.2.120
Related Commands
Command
|
Description
|
tunnel destination
|
Sets the destination of the IP tunnel.
|
interface tunnel
|
Creates the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
tunnel use-vrf
To specify which VRF to use to look up a tunnel destination IP address, use the tunnel use-vrf command in interface configuration mode. To return to the default, use the no form of this command.
tunnel use-vrf vrf-name
no tunnel use-vrf vrf-name
Syntax Description
vrf-name
|
Name of the VRF in which to look up the tunnel destination IP address.
|
Defaults
Default VRF
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.2(1)
|
This command was introduced.
|
Usage Guidelines
You should have the tunnel interface and tunnel destination IP address in the same VRF. In other words, you should have the same value for the vrf-name parameter in both the vrf member and tunnel use-vrf commands.
This command requires the Enterprise license.
Examples
This example shows how to specify the VRF in which to look up the tunnel destination IP address:
switch(config-if)# tunnel use-vrf blue
Related Commands
Command
|
Description
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
show vrf interface tunnel
|
Displays information about the VRF tunnel interface.
|
tunnel ttl
To configure the time-to-live value for a tunnel, use the tunnel ttl command in interface configuration mode. To restore the default value, use the no form of this command.
tunnel ttl value
no tunnel ttl [value]
Syntax Description
value
|
Time-to-live value for the tunnel. The range is from 1 to 255.
|
Defaults
None
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Use the tunnel ttl command to configure the time-to-live value for an IP tunnel.
This command requires the Enterprise license.
Examples
This example shows how to configure the time-to-live value for a tunnel interface:
switch(config-if)# tunnel ttl 30
Related Commands
Command
|
Description
|
tunnel destination
|
Sets the destination of the IP tunnel.
|
interface tunnel
|
Creates the IP tunnel.
|
show interface tunnel
|
Displays information about the traffic about the specified tunnel interface.
|
udld
To configure the interfaces to use a UDLD mode, use the udld command.
udld {enable | disable}
Syntax Description
disable
|
Disables the UDLD mode for fiber interfaces.
|
enable
|
Enables the normal UDLD mode for non-fiber interfaces.
|
Command Default
By default, UDLD is disabled for the 48-port, 10/100/1000 Ethernet module ports.
By default, UDLD is enabled for the 32-port, 10 gigabit Ethernet module ports.
Command Modes
Interface configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Before you can enable a UDLD mode for specified interfaces, you must make sure that UDLD is already enabled globally on the device. Use the feature udld command to enable UDLD globally.
Use the udld command to enable or disable UDLD separately on specified interfaces. This enables UDLD in normal mode. Enter the udld aggressive command to enable the aggressive mode on UDLD-enabled interfaces.
This command does not require a license.
Examples
This example shows how to enable the normal UDLD mode for Ethernet port 3/1:
switch(config)# feature udld
switch(config)# interface ethernet 3/1
switch(config-if)# udld enable
This example shows how to disable UDLD for Ethernet port 3/1:
switch(config)# interface ethernet 3/1
switch(config-if-range)# udld disable
Related Commands
Command
|
Description
|
feature udld
|
Enables UDLD globally on the device.
|
show udld
|
Displays information about the UDLD configuration.
|
udld aggressive
To configure the interfaces for aggressive UDLD mode, use the udld aggressive command.
udld aggressive
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Interface configuration
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Before you can enable the aggressive UDLD mode for an interface, you must make sure that UDLD is already enabled globally on the device and on the specified interfaces.
Use the udld aggressive command to configure the ports to use a UDLD mode:
•To enable fiber interfaces for the aggressive mode, enter the udld aggressive command in the global command mode and all the fiber interfaces will be in aggressive UDLD mode,
•To enable the copper interfaces for the aggressive, you must enter the udld aggressive command in the interface mode, specifying each interface you want in aggressive UDLD mode.
To use the aggressive UDLD mode, you must configure the interfaces on both ends of the link for the aggressive UDLD mode.
This command does not require a license.
Examples
This example shows how to enable fiber interfaces for the aggressive UDLD mode:
switch(config)# udld aggressive
This example shows how to enable the aggressive UDLD mode for the copper Ethernet interface 3/1:
switch(config)# interface ethernet 3/1
switch(config-if)# udld aggressive
Related Commands
Command
|
Description
|
feature udld
|
Enables UDLD globally for the device.
|
show udld
|
Displays information about the UDLD configuration.
|
udld message-time
To set the UDLD message interval timer, use the udld message-time command.
udld message-time seconds
Syntax Description
seconds
|
Enter the number of seconds you want between sending UDLD messages. The range is from 7 to 90 seconds.
|
Defaults
15 seconds
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Before you can set the UDLD message timer, you must make sure that UDLD is already enabled globally on the device. Use the feature udld command to globally enable UDLD.
This command does not require a license.
Examples
This example shows how to configure UDLD interval to 30 seconds:
switch(config)# udld message-time 30
Related Commands
Command
|
Description
|
feature udld
|
Enables UDLD globally for the device.
|
show udld
|
Displays information about the UDLD configuration.
|
udld reset
To reset the interfaces that UDLD has shut down and return them to the UP condition, use the udld reset command.
udld reset
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
This command does not require a license.
Examples
This example shows how to reset those interfaces that UDLD has shut down:
switch(config)# udld reset
Related Commands
Command
|
Description
|
feature udld
|
Enables UDLD globally for the device.
|
show udld
|
Displays information about the UDLD configuration.
|
vlan dot1q tag native
To enable dot1q (IEEE 802.1Q) tagging for the native VLAN in a trunk, use the vlan dot1q tag native command. To return to the default where no packets are tagged in the native VLAN in a trunk, use the no form of this command.
vlan dot1q tag native
no vlan dot1q tag native
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.0
|
This command was introduced.
|
Usage Guidelines
Typically, you configure 802.1Q trunks with a native VLAN ID, which strips tagging from all packets on that VLAN and allows all untagged traffic and control traffic to transit the switch. Packets that enter the switch with 802.1Q tags that match the native VLAN ID value are similarly stripped of tagging. If you choose to maintain the tagging on the native VLAN and drop untagged traffic, enter the vlan dot1q tag native command.
Use the vlan dot1q tag native command to configure the switch to tag the traffic received on the native VLAN and to admit only 802.1Q-tagged frame, dropping any untagged traffic, including untagged traffic in the native VLAN. Control traffic continues to be accepted untagged on the native VLAN on a trunked port, even when the vlan dot1q tag native command is enabled.
Use this command to enable the tagging behavior on all native VLANs on all trunked ports on the switch.
Note If you enable 802.1Q tagging on one switch and disable it on another switch, all traffic is dropped; you must identically configure 802.1Q tagging on each switch.
This command does not require a license.
Examples
This example shows how to enable dot1q tagging for all VLANs on all trunk ports on the switch:
switch(config)# vlan dot1q tag native
Related Commands
Command
|
Description
|
show vlan dot1q tag native
|
Displays native VLAN-tagging information.
|
vpc
To move other port channels into the virtual port channel (vPC), use the vpc command. To remove a port channel from the vPC, use the no form of this command.
vpc number
no vpc number
Syntax Description
number
|
The number for the vPC. The range of numbers is 1 to 4096.
|
Defaults
None
Command Modes
Interface command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC.
Once you have created the vPC domain ID and the vPC peer link, you create port channels to attach the downstream device to each vPC peer device. That is, you create one port channel from the downstream device to the primary vPC peer device and you create another port channel from the downstream device to the secondary peer device. Finally, working on each vPC peer device, you assign a vPC number to the port channel that connects to the downstream device. You will experience minimal traffic disruption when you are creating vPCs.
Note The vPC number that you assign to the port channel connecting to the downstream device from the vPC peer device must be identical on both vPC peer devices.
This command does not require a license.
Examples
This example shows how to move a port channel into the vPC:
switch (config)# interface port-channel 10
switch (config-if)# vpc 100
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
vpc domain
To create a virtual port-channel (vPC) domain, use the vpc domain command. To remove a vPC domain, use the no form of this command.
vpc domain domain-id
no vpc domain domain-id
Syntax Description
domain-id
|
Domain ID for the vPC. The range of numbers is from 1 to 1000. You must use unique vPC IDs for each vPC within a single VDC.
|
Defaults
None
Command Modes
Any command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC domain.
You put all vPC interfaces, including the vPC peer link, on both of the vPC peer devices into the identical vPC domain. You must have unique vPC domain numbers within each VDC. In Cisco NX-OS Release 4.1(3), you can have only one vPC per VDC. Once you create a vPC domain, the system automatically creates a vPC system MAC that is unique to that vPC.
You also use this command to enter the vpc-domain command mode in order to configure vPC parameters.
This command does not require a license.
Examples
This example shows how to create a vPC domain:
switch(config)# vpc domain 5
switch(config-vpc-domain)#
This example shows how to enter the vpc-domain command mode to configure an existing vPC domain:
switch(config)# vpc domain 5
switch(config-vpc-domain)#
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|
vpc peer-link
To create a virtual port-channel (vPC) peer link, use the vpc peer-link command. To remove a vPC peer link, use the no form of this command.
vpc peer-link
no vpc peer-link
Syntax Description
This command has no arguments or keywords
Command Modes
Interface command mode.
Supported User Roles
network-admin
vdc-admin
Command History
Release
|
Modification
|
4.1(3)
|
This command was introduced.
|
Usage Guidelines
You must enable the vPC feature before you can create a vPC peer link.
You configure a port channel using 10-Gigabit Ethernet ports on the N7K-M132XP-12 module. We recommend that you use the 10-Gigabit Ethernet ports for the channel in dedicated mode and configure at least two of these ports on two different modules into the port channel for redundancy.
Use the vpc peer-link command to make that port channel a vPC peer link. The system returns an error message if you attempt to configure a 1-Gigabit Ethernet interface as a vPC peer link.
After you configure the vPC peer device and the vPC peer link is established, the system creates a new MAC address for the vPC and decides which vPC device is the primary device and which is the secondary.
This command does not require a license.
Examples
This example shows how to create a vPC peer link:
switch(config)# interface port-channel 20
switch(config-if)# vpc peer-link
switch(config-vpc-domain)#
Related Commands
Command
|
Description
|
show vpc brief
|
Displays information about vPCs. If the feature is not enabled, the system displays an error when you enter this command.
|