Catalyst 2960 Switch Command Reference (LAN Lite Image), Rel 12.2(37)EY
Catalyst 2960 Switch Cisco IOS Commands - rmon collection through show vtp
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Table Of Contents

rmon collection stats

sdm prefer

service password-recovery

set

setup

setup express

show archive status

show boot

show cable-diagnostics tdr

show cluster

show cluster candidates

show cluster members

show controllers cpu-interface

show controllers ethernet-controller

show controllers tcam

show controllers utilization

show dot1x

show dtp

show eap

show env

show errdisable detect

show errdisable flap-values

show errdisable recovery

show etherchannel

show fallback profile

show flowcontrol

show interfaces

show interfaces counters

show inventory

show ip igmp profile

show ip igmp snooping

show ip igmp snooping groups

show ip igmp snooping mrouter

show ip igmp snooping querier

show lacp

show mac address-table

show mac address-table address

show mac address-table aging-time

show mac address-table count

show mac address-table dynamic

show mac address-table interface

show mac address-table notification

show mac address-table static

show mac address-table vlan

show mls qos

show mls qos input-queue

show mls qos interface

show mls qos maps

show monitor

show pagp

show parser macro

show port-security

show sdm prefer

show setup express

show spanning-tree

show storm-control

show system mtu

show udld

show version

show vlan

show vmps

show vtp


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rmon collection stats

Use the rmon collection stats interface configuration command to collect Ethernet group statistics, which include usage statistics about broadcast and multicast packets, and error statistics about cyclic redundancy check (CRC) alignment errors and collisions. Use the no form of this command to return to the default setting.

rmon collection stats index [owner name]

no rmon collection stats index [owner name]

Syntax Description

index

Remote Network Monitoring (RMON) collection control index. The range is 1 to 65535.

owner name

(Optional) Owner of the RMON collection.


Defaults

The RMON statistics collection is disabled.

Command Modes

Interface configuration

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

The RMON statistics collection command is based on hardware counters.

Examples

This example shows how to collect RMON statistics for the owner root:

Switch(config)# interface gigabitethernet0/1
Switch(config-if)# rmon collection stats 2 owner root

You can verify your setting by entering the show rmon statistics privileged EXEC command.

Related Commands

Command
Description

show rmon statistics

Displays RMON statistics.

For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > System Management Commands > RMON Commands.


sdm prefer

Use the sdm prefer global configuration command to configure the template used in Switch Database Management (SDM) resource allocation. You can use a template to allocate system resources to best support the features being used in your application. Use the no form of this command to return to the default template.

sdm prefer {default | qos}

no sdm prefer

Syntax Description

default

Give balance to all functions.

qos

Provide maximum system usage for quality of service (QoS) access control entries (ACEs).


Defaults

The default template provides a balance to all features.

Command Modes

Global configuration

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

You must reload the switch for the configuration to take effect.

If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template currently in use and the template that will become active after a reload.

Use the no sdm prefer command to set the switch to the default desktop template.

Table 2-4 lists the approximate numbers of each resource supported in each template.

Table 2-4 Approximate Number of Feature Resources Allowed by Each Template 

Resource
Default
QoS

Unicast MAC addresses

8 K

8 K

IPv4 IGMP groups

256

256

IPv4 MAC QoS ACEs

128

384

IPv4 MAC security ACEs

384

128


Examples

This example shows how to use the QoS template:

Switch(config)# sdm prefer qos
Switch(config)# exit
Switch# reload

You can verify your settings by entering the show sdm prefer privileged EXEC command.

Related Commands

Command
Description

show sdm prefer

Displays the current SDM template in use or displays the templates that can be used, with approximate resource allocation per feature.


service password-recovery

Use the service password-recovery global configuration command to enable the password-recovery mechanism (the default). This mechanism allows an end user with physical access to the switch to hold down the Mode button and interrupt the bootup process while the switch is powering up and to assign a new password. Use the no form of this command to disable part of the password-recovery functionality. When the password-recovery mechanism is disabled, interrupting the bootup process is allowed only if the user agrees to set the system back to the default configuration.

service password-recovery

no service password-recovery

Syntax Description

This command has no arguments or keywords.

Defaults

The password-recovery mechanism is enabled.

Command Modes

Global configuration

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

As a system administrator, you can use the no service password-recovery command to disable some of the functionality of the password recovery feature by allowing an end user to reset a password only by agreeing to return to the default configuration.

To use the password-recovery procedure, a user with physical access to the switch holds down the Mode button while the unit powers up and for a second or two after the LED above port 1X turns off. When the button is released, the system continues with initialization.

If the password-recovery mechanism is disabled, this message appears:

The password-recovery mechanism has been triggered, but
is currently disabled. Access to the boot loader prompt
through the password-recovery mechanism is disallowed at
this point. However, if you agree to let the system be
reset back to the default system configuration, access
to the boot loader prompt can still be allowed.

Would you like to reset the system back to the default configuration (y/n)?

If the user chooses not to reset the system to the default configuration, the normal bootup process continues, as if the Mode button had not been pressed. If you choose to reset the system to the default configuration, the configuration file in flash memory is deleted, and the VLAN database file, flash:vlan.dat (if present), is deleted.


Note If you use the no service password-recovery command to control end user access to passwords, we recommend that you save a copy of the config file in a location away from the switch in case the end user uses the password recovery procedure and sets the system back to default values. Do not keep a backup copy of the config file on the switch.

If the switch is operating in VTP transparent mode, we recommend that you also save a copy of the vlan.dat file in a location away from the switch.


You can verify if password recovery is enabled or disabled by entering the show version privileged EXEC command.

Examples

This example shows how to disable password recovery on a switch so that a user can only reset a password by agreeing to return to the default configuration.

Switch(config)# no service-password recovery
Switch(config)# exit

Related Commands

Command
Description

show version

Displays version information for the hardware and firmware.


set

Use the set policy-map class configuration command to classify IP traffic by setting a Differentiated Services Code Point (DSCP) or an IP-precedence value in the packet. Use the no form of this command to remove traffic classification.

set {dscp new-dscp | [ip] precedence new-precedence}

no set {dscp new-dscp | [ip] precedence new-precedence}

Syntax Description

dscp new-dscp

New DSCP value assigned to the classified traffic. The range is 0 to 63. You also can enter a mnemonic name for a commonly used value.

[ip] precedence new-precedence

New IP-precedence value assigned to the classified traffic. The range is 0 to 7. You also can enter a mnemonic name for a commonly used value.


Defaults

No traffic classification is defined.

Command Modes

Policy-map class configuration

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you have used the set ip dscp policy-map class configuration command, the switch changes this command to set dscp in the switch configuration. If you enter the set ip dscp policy-map class configuration command, this setting appears as set dscp in the switch configuration.

In Cisco IOS Release 12.2(25)SED or later, you can use the set ip precedence policy-map class configuration command or the set precedence policy-map class configuration command. This setting appears as set ip precedence in the switch configuration.

The set command is mutually exclusive with the trust policy-map class configuration command within the same policy map.

For the set dscp new-dscp or the set ip precedence new-precedence command, you can enter a mnemonic name for a commonly used value. For example, you can enter the set dscp af11 command, which is the same as entering the set dscp 10 command. You can enter the set ip precedence critical command, which is the same as entering the set ip precedence 5 command. For a list of supported mnemonics, enter the set dscp ? or the set ip precedence ? command to see the command-line help strings.

To return to policy-map configuration mode, use the exit command. To return to privileged EXEC mode, use the end command.

Examples

This example shows how to assign DSCP 10 to all FTP traffic without any policers:

Switch(config)# policy-map policy_ftp
Switch(config-pmap)# class ftp_class
Switch(config-pmap-c)# set dscp 10
Switch(config-pmap)# exit

You can verify your settings by entering the show policy-map privileged EXEC command.

Related Commands

Command
Description

show port-security

Displays QoS policy maps.

trust

Defines a trust state for traffic classified through the class policy-map configuration command or the class-map global configuration command.


setup

Use the setup privileged EXEC command to configure the switch with its initial configuration.

setup

Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

When you use the setup command, make sure that you have this information:

IP address and network mask

Password strategy for your environment

Whether the switch will be used as the cluster command switch and the cluster name

When you enter the setup command, an interactive dialog, called the System Configuration Dialog, appears. It guides you through the configuration process and prompts you for information. The values shown in brackets next to each prompt are the default values last set by using either the setup command facility or the configure privileged EXEC command.

Help text is provided for each prompt. To access help text, press the question mark (?) key at a prompt.

To return to the privileged EXEC prompt without making changes and without running through the entire System Configuration Dialog, press Ctrl-C.

When you complete your changes, the setup program shows you the configuration command script that was created during the setup session. You can save the configuration in NVRAM or return to the setup program or the command-line prompt without saving it.

Examples

This is an example of output from the setup command:

Switch# setup
--- System Configuration Dialog ---

Continue with configuration dialog? [yes/no]: yes

At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.

Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system.

Would you like to enter basic management setup? [yes/no]: yes
Configuring global parameters:
Enter host name [Switch]:host-name

  The enable secret is a password used to protect access to
  privileged EXEC and configuration modes. This password, after
  entered, becomes encrypted in the configuration.
  Enter enable secret: enable-secret-password

  The enable password is used when you do not specify an
  enable secret password, with some older software versions, and
  some boot images.
  Enter enable password: enable-password

  The virtual terminal password is used to protect
  access to the router over a network interface.
  Enter virtual terminal password: terminal-password

  Configure SNMP Network Management? [no]: yes
  Community string [public]: 

Current interface summary
Any interface listed with OK? value "NO" does not have a valid configuration

Interface                  IP-Address      OK? Method Status                Protocol
Vlan1                      172.20.135.202  YES NVRAM  up                    up

GigabitEthernet0/1         unassigned      YES unset  up                    up

GigabitEthernet0/2         unassigned      YES unset  up                    down

<output truncated>

Port-channel1              unassigned      YES unset  up                    down

Enter interface name used to connect to the
management network from the above interface summary: vlan1

Configuring interface vlan1:
Configure IP on this interface? [yes]: yes 
IP address for this interface: ip_address
Subnet mask for this interface [255.0.0.0]: subnet_mask

Would you like to enable as a cluster command switch? [yes/no]: yes

Enter cluster name: cluster-name

The following configuration command script was created:

hostname host-name
enable secret 5 $1$LiBw$0Xc1wyT.PXPkuhFwqyhVi0
enable password enable-password
line vty 0 15
password terminal-password
snmp-server community public
!
no ip routing
!
interface GigabitEthernet0/1
no ip address
!
interface GigabitEthernet0/2
no ip address
! 


cluster enable cluster-name
!
end
Use this configuration? [yes/no]: yes
!
[0] Go to the IOS command prompt without saving this config.

[1] Return back to the setup without saving this config.

[2] Save this configuration to nvram and exit.

Enter your selection [2]:

Related Commands

Command
Description

show running-config

Displays the running configuration on the switch. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.

show version

Displays version information for the hardware and firmware.


setup express

Use the setup express global configuration command to enable Express Setup mode. Use the no form of this command to disable Express Setup mode.

setup express

no setup express

Syntax Description

This command has no arguments or keywords.

Defaults

Express Setup is enabled.

Command Modes

Global configuration

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

When Express Setup is enabled on a new (unconfigured) switch, pressing the Mode button for 2 seconds activates Express Setup. You can access the switch through an Ethernet port by using the IP address 10.0.0.1 and then can configure the switch with the web-based Express Setup program or the command-line interface (CLI)-based setup program.

When you press the Mode button for 2 seconds on a configured switch, the LEDs above the Mode button start blinking. If you press the Mode button for a total of 10 seconds, the switch configuration is deleted, and the switch reboots. The switch can then be configured like a new switch, either through the web-based Express Setup program or the CLI-based setup program.


Note As soon as you make any change to the switch configuration (including entering no at the beginning of the CLI-based setup program), configuration by Express Setup is no longer available. You can only run Express Setup again by pressing the Mode button for 10 seconds. This deletes the switch configuration and reboots the switch.


If Express Setup is active on the switch, entering the write memory or copy running-configuration startup-configuration privileged EXEC commands deactivates Express Setup. The IP address 10.0.0.1 is no longer valid on the switch, and your connection using this IP address ends.

The primary purpose of the no setup express command is to prevent someone from deleting the switch configuration by pressing the Mode button for 10 seconds.

Examples

This example shows how to enable Express Setup mode:

Switch(config)# setup express

You can verify that Express Setup mode is enabled by pressing the Mode button:

On an unconfigured switch, the LEDs above the Mode button turn solid green after 3 seconds.

On a configured switch, the mode LEDs begin blinking after 2 seconds and turn solid green after 10 seconds.


Caution If you hold the Mode button down for a total of 10 seconds, the configuration is deleted, and the switch reboots.

This example shows how to disable Express Setup mode:

Switch(config)# no setup express

You can verify that Express Setup mode is disabled by pressing the Mode button. The mode LEDs do not turn solid green or begin blinking green if Express Setup mode is not enabled on the switch.

Related Commands

Command
Description

show setup express

Displays if Express Setup mode is active.


show archive status

Use the show archive status privileged EXEC command to display the status of a new image being downloaded to a switch with the HTTP or the TFTP protocol.

show archive status [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you use the archive download-sw privileged EXEC command to download an image to a TFTP server, the output of the archive download-sw command shows the status of the download.

If you do not have a TFTP server, you can use Network Assistant or the embedded device manager to download the image by using HTTP. The show archive status command shows the progress of the download.

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

These are examples of output from the show archive status command:

Switch# show archive status
IDLE: No upgrade in progress

Switch# show archive status
LOADING: Upgrade in progress

Switch# show archive status
EXTRACT: Extracting the image

Switch# show archive status
VERIFY: Verifying software

Switch# show archive status
RELOAD: Upgrade completed. Reload pending

Related Commands

Command
Description

archive download-sw

Downloads a new image from a TFTP server to the switch.


show boot

Use the show boot privileged EXEC command to display the settings of the boot environment variables.

show boot [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show boot command. Table 2-5 describes each field in the display.

Switch# show boot
BOOT path-list: flash:c2960-lanbase-mz.122-25.FX.bin
Config file:         flash:/config.text
Private Config file: flash:/private-config
Enable Break:        no
Manual Boot:         yes
HELPER path-list:
NVRAM/Config file
      buffer size:   32768 

Table 2-5 show boot Field Descriptions

Field
Description

BOOT path-list

Displays a semicolon separated list of executable files to try to load and execute when automatically booting up.

If the BOOT environment variable is not set, the system attempts to load and execute the first executable image it can find by using a recursive, depth-first search through the flash file system. In a depth-first search of a directory, each encountered subdirectory is completely searched before continuing the search in the original directory.

If the BOOT variable is set but the specified images cannot be loaded, the system attempts to boot up with the first bootable file that it can find in the flash file system.

Config file

Displays the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration.

Private Config file

Displays the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration.

Enable Break

Displays whether a break during booting up is enabled or disabled. If it is set to yes, on, or 1, you can interrupt the automatic bootup process by pressing the Break key on the console after the flash file system is initialized.

Manual Boot

Displays whether the switch automatically or manually boots up. If it is set to no or 0, the bootloader attempts to automatically boot up the system. If it is set to anything else, you must manually boot up the switch from the bootloader mode.

Helper path-list

Displays a semicolon separated list of loadable files to dynamically load during the bootloader initialization. Helper files extend or patch the functionality of the bootloader.

NVRAM/Config file buffer size

Displays the buffer size that Cisco IOS uses to hold a copy of the configuration file in memory. The configuration file cannot be larger than the buffer size allocation.


Related Commands

Command
Description

boot config-file

Specifies the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration.

boot enable-break

Enables interrupting the automatic boot process.

boot manual

Enables manually booting up the switch during the next bootup cycle.

boot private-config-file

Specifies the filename that Cisco IOS uses to read and write a nonvolatile copy of the private configuration.

boot system

Specifies the Cisco IOS image to load during the next bootup cycle.


show cable-diagnostics tdr

Use the show cable-diagnostics tdr privileged EXEC command to display the Time Domain Reflector (TDR) results.

show cable-diagnostics tdr interface interface-id [ | {begin | exclude | include} expression]

Syntax Description

interface-id

Specify the interface on which TDR was run.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

TDR is supported only on 10/100 and 10/100/1000 copper Ethernet ports. It is not supported on SFP module ports. For more information about TDR, see the software configuration guide for this release.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show cable-diagnostics tdr interface interface-id command:

Switch# show cable-diagnostics tdr interface gigabitethernet0/2
TDR test last run on: March 01 20:15:40
Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi0/2     auto  Pair A     0    +/- 2  meters N/A         Open
                
                Pair B     0    +/- 2  meters N/A         Open
                Pair C     0    +/- 2  meters N/A         Open
                Pair D     0    +/- 2  meters N/A         Open

Table 2-6 lists the descriptions of the fields in the show cable-diagnostics tdr command output.

Table 2-6 Fields Descriptions for the show cable-diagnostics tdr Command Output 

Field
Description

Interface

Interface on which TDR was run.

Speed

Speed of connection.

Local pair

Name of the pair of wires that TDR is testing on the local interface.

Pair length

Location on the cable where the problem is, with respect to your switch. TDR can only find the location in one of these cases:

The cable is properly connected, the link is up, and the interface speed is 1000 Mb/s.

The cable is open.

The cable has a short.

Remote pair

Name of the pair of wires to which the local pair is connected. TDR can learn about the remote pair only when the cable is properly connected and the link is up.

Pair status

The status of the pair of wires on which TDR is running:

Normal—The pair of wires is properly connected.

Not completed—The test is running and is not completed.

Not supported—The interface does not support TDR.

Open—The pair of wires is open.

Shorted—The pair of wires is shorted.


This is an example of output from the show interfaces interface-id command when TDR is running:

Switch# show interfaces gigabitethernet0/2
gigabitethernet0/2 is up, line protocol is up (connected: TDR in Progress)

This is an example of output from the show cable-diagnostics tdr interface interface-id command when TDR is not running:

Switch# show cable-diagnostics tdr interface gigabitethernet0/2
% TDR test was never issued on Gi0/2

If an interface does not support TDR, this message appears:

% TDR test is not supported on switch 1

Related Commands

Command
Description

test cable-diagnostics tdr

Enables and runs TDR on an interface.


show cluster

Use the show cluster user EXEC command to display the cluster status and a summary of the cluster to which the switch belongs. This command can be entered on the cluster command switch and cluster member switches.

show cluster [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you enter this command on a switch that is not a cluster member, the error message Not a management cluster member appears.

On a cluster member switch, this command displays the identity of the cluster command switch, the switch member number, and the state of its connectivity with the cluster command switch.

On a cluster command switch, this command displays the cluster name and the total number of members. It also shows the cluster status and time since the status changed. If redundancy is enabled, it displays the primary and secondary command-switch information.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output when the show cluster command is entered on the active cluster command switch:

Switch> show cluster
Command switch for cluster "Ajang"
        Total number of members:        7
        Status:                         1 members are unreachable
        Time since last status change:  0 days, 0 hours, 2 minutes
        Redundancy:                     Enabled
                Standby command switch: Member 1
                Standby Group:          Ajang_standby
                Standby Group Number:   110
        Heartbeat interval:             8
        Heartbeat hold-time:            80
        Extended discovery hop count:   3 

This is an example of output when the show cluster command is entered on a cluster member switch:

Switch1> show cluster
Member switch for cluster "hapuna"
        Member number:                  3
        Management IP address:          192.192.192.192
        Command switch mac address:     0000.0c07.ac14
        Heartbeat interval:             8
        Heartbeat hold-time:            80 

This is an example of output when the show cluster command is entered on a cluster member switch that is configured as the standby cluster command switch:

Switch> show cluster
Member switch for cluster "hapuna"
        Member number:                  3 (Standby command switch)
        Management IP address:          192.192.192.192
        Command switch mac address:     0000.0c07.ac14
        Heartbeat interval:             8
        Heartbeat hold-time:            80 

This is an example of output when the show cluster command is entered on the cluster command switch that has lost connectivity with member 1:

Switch> show cluster
Command switch for cluster "Ajang"
        Total number of members:        7
        Status:                         1 members are unreachable
        Time since last status change:  0 days, 0 hours, 5 minutes
        Redundancy:                     Disabled
        Heartbeat interval:             8
        Heartbeat hold-time:            80
        Extended discovery hop count:   3 

This is an example of output when the show cluster command is entered on a cluster member switch that has lost connectivity with the cluster command switch:

Switch> show cluster
Member switch for cluster "hapuna"
        Member number:                  <UNKNOWN>
        Management IP address:          192.192.192.192
        Command switch mac address:     0000.0c07.ac14
        Heartbeat interval:             8
        Heartbeat hold-time:            80 

Related Commands

Command
Description

cluster enable

Enables a command-capable switch as the cluster command switch, assigns a cluster name, and optionally assigns a member number to it.

show cluster candidates

Displays a list of candidate switches.

show cluster members

Displays information about the cluster members.


show cluster candidates

Use the show cluster candidates privileged EXEC command to display a list of candidate switches.

show cluster candidates [detail | mac-address H.H.H.] [ | {begin | exclude | include} expression]

Syntax Description

detail

(Optional) Display detailed information for all candidates.

mac-address H.H.H.

(Optional) MAC address of the cluster candidate.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

This command is available only on the cluster command switch.

If the switch is not a cluster command switch, the command displays an empty line at the prompt.

The SN in the display means switch member number. If E appears in the SN column, it means that the switch is discovered through extended discovery. If E does not appear in the SN column, it means that the switch member number is the upstream neighbor of the candidate switch. The hop count is the number of devices the candidate is from the cluster command switch.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show cluster candidates command:

Switch> show cluster candidates
                                                             |---Upstream---|
MAC Address    Name         Device Type      PortIf  FEC Hops SN PortIf  FEC
00d0.7961.c4c0 StLouis-2    WS-C2960-12T     Gi0/1        2   1  Fa0/11 
00d0.bbf5.e900 ldf-dist-128 WS-C3524-XL      Fa0/7        1   0  Fa0/24      
00e0.1e7e.be80 1900_Switch  1900             3        0   1   0  Fa0/11      
00e0.1e9f.7a00 Surfers-24   WS-C2924-XL      Fa0/5        1   0  Fa0/3       
00e0.1e9f.8c00 Surfers-12-2 WS-C2912-XL      Fa0/4        1   0  Fa0/7       
00e0.1e9f.8c40 Surfers-12-1 WS-C2912-XL      Fa0/1        1   0  Fa0/9       

This is an example of output from the show cluster candidates command that uses the MAC address of a cluster member switch directly connected to the cluster command switch:

Switch> show cluster candidates mac-address 00d0.7961.c4c0
Device 'Tahiti-12' with mac address number 00d0.7961.c4c0
        Device type:            cisco WS-C2960-12T
        Upstream MAC address:   00d0.796d.2f00 (Cluster Member 0)
        Local port:             Gi0/1   FEC number:
        Upstream port:          GI0/11  FEC Number:
Hops from cluster edge: 1
        Hops from command device: 1

This is an example of output from the show cluster candidates command that uses the MAC address of a cluster member switch three hops from the cluster edge:

Switch> show cluster candidates mac-address 0010.7bb6.1cc0
Device 'Ventura' with mac address number 0010.7bb6.1cc0
        Device type:            cisco WS-C2912MF-XL
        Upstream MAC address:   0010.7bb6.1cd4
        Local port:             Fa2/1   FEC number: 
        Upstream port:          Fa0/24  FEC Number: 
        Hops from cluster edge: 3
        Hops from command device: -

This is an example of output from the show cluster candidates detail command:

Switch> show cluster candidates detail
Device 'Tahiti-12' with mac address number 00d0.7961.c4c0
        Device type:            cisco WS-C3512-XL
        Upstream MAC address:   00d0.796d.2f00 (Cluster Member 1)
        Local port:             Fa0/3   FEC number: 
        Upstream port:          Fa0/13  FEC Number: 
        Hops from cluster edge: 1
        Hops from command device: 2
Device '1900_Switch' with mac address number 00e0.1e7e.be80
        Device type:            cisco 1900
        Upstream MAC address:   00d0.796d.2f00 (Cluster Member 2)
        Local port:             3       FEC number: 0
        Upstream port:          Fa0/11  FEC Number: 
        Hops from cluster edge: 1
        Hops from command device: 2
Device 'Surfers-24' with mac address number 00e0.1e9f.7a00
        Device type:            cisco WS-C2924-XL
        Upstream MAC address:   00d0.796d.2f00 (Cluster Member 3)
        Local port:             Fa0/5   FEC number: 
        Upstream port:          Fa0/3   FEC Number: 
        Hops from cluster edge: 1
        Hops from command device: 2

Related Commands

Command
Description

show cluster

Displays the cluster status and a summary of the cluster to which the switch belongs.

show cluster members

Displays information about the cluster members.


show cluster members

Use the show cluster members privileged EXEC command to display information about the cluster members.

show cluster members [n | detail] [ | {begin | exclude | include} expression]

Syntax Description

n

(Optional) Number that identifies a cluster member. The range is 0 to 15.

detail

(Optional) Display detailed information for all cluster members.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

This command is available only on the cluster command switch.

If the cluster has no members, this command displays an empty line at the prompt.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show cluster members command. The SN in the display means switch number.

Switch# show cluster members
                                                |---Upstream---|
SN MAC Address    Name         PortIf FEC Hops   SN PortIf  FEC  State
0  0002.4b29.2e00 StLouis1                 0                    Up   (Cmdr)
1  0030.946c.d740 tal-switch-1 Fa0/13      1     0  Gi0/1       Up
2  0002.b922.7180 nms-2820     10      0   2     1  Fa0/18      Up
3  0002.4b29.4400 SanJuan2     Gi0/1       2     1  Fa0/11      Up
4  0002.4b28.c480 GenieTest    Gi0/2       2     1  Fa0/9       Up

This is an example of output from the show cluster members for cluster member 3:

Switch# show cluster members 3
Device 'SanJuan2' with member number 3
        Device type:            cisco WS-C2960
        MAC address:            0002.4b29.4400
        Upstream MAC address:   0030.946c.d740 (Cluster member 1)
        Local port:             Gi0/1   FEC number:
        Upstream port:          GI0/11  FEC Number:
        Hops from command device: 2    

This is an example of output from the show cluster members detail command:

Switch# show cluster members detail
Device 'StLouis1' with member number 0 (Command Switch)
        Device type:            cisco WS-C2960
        MAC address:            0002.4b29.2e00
        Upstream MAC address:
        Local port:                     FEC number:
        Upstream port:                  FEC Number:
        Hops from command device: 0                 
Device 'tal-switch-14' with member number 1
        Device type:            cisco WS-C3548-XL
        MAC address:            0030.946c.d740
        Upstream MAC address:   0002.4b29.2e00 (Cluster member 0)
        Local port:             Fa0/13  FEC number:
        Upstream port:          Gi0/1   FEC Number:
        Hops from command device: 1                   
Device 'nms-2820' with member number 2
        Device type:            cisco 2820
        MAC address:            0002.b922.7180
        Upstream MAC address:   0030.946c.d740 (Cluster member 1)
        Local port:             10      FEC number: 0
        Upstream port:          Fa0/18  FEC Number:
        Hops from command device: 2                        
Device 'SanJuan2' with member number 3
        Device type:            cisco WS-C2960
        MAC address:            0002.4b29.4400
        Upstream MAC address:   0030.946c.d740 (Cluster member 1)
        Local port:             Gi0/1   FEC number:
        Upstream port:          Fa0/11  FEC Number:
        Hops from command device: 2
Device 'GenieTest' with member number 4
        Device type:            cisco SeaHorse
        MAC address:            0002.4b28.c480
        Upstream MAC address:   0030.946c.d740 (Cluster member 1)
        Local port:             Gi0/2   FEC number:
        Upstream port:          Fa0/9   FEC Number:
        Hops from command device: 2
Device 'Palpatine' with member number 5
        Device type:            cisco WS-C2924M-XL
        MAC address:            00b0.6404.f8c0
        Upstream MAC address:   0002.4b29.2e00 (Cluster member 0)
        Local port:             Gi2/1   FEC number:
        Upstream port:          Gi0/7   FEC Number:
        Hops from command device: 1                            

Related Commands

Command
Description

show cluster

Displays the cluster status and a summary of the cluster to which the switch belongs.

show cluster candidates

Displays a list of candidate switches.


show controllers cpu-interface

Use the show controllers cpu-interface privileged EXEC command to display the state of the CPU network interface ASIC and the send and receive statistics for packets reaching the CPU.

show controllers cpu-interface [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is a partial output example from the show controllers cpu-interface command:

Switch# show controllers cpu-interface
cpu-queue-frames  retrieved  dropped    invalid    hol-block
----------------- ---------- ---------- ---------- ----------
rpc               4523063    0          0          0
stp               1545035    0          0          0
ipc               1903047    0          0          0
routing protocol  96145      0          0          0
L2 protocol       79596      0          0          0
remote console    0          0          0          0
sw forwarding     5756       0          0          0
host              225646     0          0          0
broadcast         46472      0          0          0
cbt-to-spt        0          0          0          0
igmp snooping     68411      0          0          0
icmp              0          0          0          0
logging           0          0          0          0
rpf-fail          0          0          0          0
queue14           0          0          0          0
cpu heartbeat     1710501    0          0          0

Supervisor ASIC receive-queue parameters
----------------------------------------
 queue 0 maxrecevsize 5EE pakhead 1419A20 paktail 13EAED4
 queue 1 maxrecevsize 5EE pakhead 15828E0 paktail 157FBFC
 queue 2 maxrecevsize 5EE pakhead 1470D40 paktail 1470FE4
 queue 3 maxrecevsize 5EE pakhead 19CDDD0 paktail 19D02C8

<output truncated>

Supervisor ASIC Mic Registers
------------------------------
MicDirectPollInfo               80000800
MicIndicationsReceived          00000000
MicInterruptsReceived           00000000
MicPcsInfo                      0001001F
MicPlbMasterConfiguration       00000000
MicRxFifosAvailable             00000000
MicRxFifosReady                 0000BFFF
MicTimeOutPeriod:       FrameTOPeriod: 00000EA6 DirectTOPeriod: 00004000

<output truncated>

MicTransmitFifoInfo:
Fifo0:   StartPtrs:     038C2800        ReadPtr:        038C2C38
        WritePtrs:      038C2C38        Fifo_Flag:      8A800800
        Weights:        001E001E
Fifo1:  StartPtr:       03A9BC00        ReadPtr:        03A9BC60
        WritePtrs:      03A9BC60        Fifo_Flag:      89800400
        writeHeaderPtr: 03A9BC60
Fifo2:  StartPtr:       038C8800        ReadPtr:        038C88E0
        WritePtrs:      038C88E0        Fifo_Flag:      88800200
        writeHeaderPtr: 038C88E0
Fifo3:  StartPtr:       03C30400        ReadPtr:        03C30638
        WritePtrs:      03C30638        Fifo_Flag:      89800400
        writeHeaderPtr: 03C30638
Fifo4:  StartPtr:       03AD5000        ReadPtr:        03AD50A0
        WritePtrs:      03AD50A0        Fifo_Flag:      89800400
        writeHeaderPtr: 03AD50A0
Fifo5:  StartPtr:       03A7A600        ReadPtr:        03A7A600
        WritePtrs:      03A7A600        Fifo_Flag:      88800200
        writeHeaderPtr: 03A7A600
Fifo6:  StartPtr:       03BF8400        ReadPtr:        03BF87F0
        WritePtrs:      03BF87F0        Fifo_Flag:      89800400 

<output truncated>

Related Commands

Command
Description

show controllers ethernet-controller

Displays per-interface send and receive statistics read from the hardware or the interface internal registers.

show interfaces

Displays the administrative and operational status of all interfaces or a specified interface.


show controllers ethernet-controller

Use the show controllers ethernet-controller privileged EXEC command without keywords to display per-interface send and receive statistics read from the hardware. Use with the phy keyword to display the interface internal registers or the port-asic keyword to display information about the port ASIC.

show controllers ethernet-controller [interface-id] [phy [detail]] [port-asic {configuration | statistics}] [fastethernet 0][ | {begin | exclude | include} expression]

Syntax Description

interface-id

The physical interface (including type, module, and port number).

phy

(Optional) Display the status of the internal registers on the switch physical layer device (PHY) for the device or the interface. This display includes the operational state of the automatic medium-dependent interface crossover (auto-MDIX) feature on an interface.

detail

(Optional) Display details about the PHY internal registers.

port-asic

(Optional) Display information about the port ASIC internal registers.

configuration

Display port ASIC internal register configuration.

statistics

Display port ASIC statistics, including the Rx/Sup Queue and miscellaneous statistics.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC (only supported with the interface-id keywords in user EXEC mode)

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

This display without keywords provides traffic statistics, basically the RMON statistics for all interfaces or for the specified interface.

When you enter the phy or port-asic keywords, the displayed information is useful primarily for Cisco technical support representatives troubleshooting the switch.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show controllers ethernet-controller command for an interface. Table 2-7 describes the Transmit fields, and Table 2-8 describes the Receive fields.

Switch# show controllers ethernet-controller gigabitethernet0/1
Transmit GigabitEthernet0/1            Receive
         0 Bytes                             0 Bytes
         0 Unicast frames                    0 Unicast frames
         0 Multicast frames                  0 Multicast frames
         0 Broadcast frames                  0 Broadcast frames
         0 Too old frames                    0 Unicast bytes
         0 Deferred frames                   0 Multicast bytes
         0 MTU exceeded frames               0 Broadcast bytes
         0 1 collision frames                0 Alignment errors
         0 2 collision frames                0 FCS errors
         0 3 collision frames                0 Oversize frames
         0 4 collision frames                0 Undersize frames
         0 5 collision frames                0 Collision fragments
         0 6 collision frames
         0 7 collision frames                0 Minimum size frames
         0 8 collision frames                0 65 to 127 byte frames
         0 9 collision frames                0 128 to 255 byte frames
         0 10 collision frames               0 256 to 511 byte frames
         0 11 collision frames               0 512 to 1023 byte frames
         0 12 collision frames               0 1024 to 1518 byte frames
         0 13 collision frames               0 Overrun frames
         0 14 collision frames               0 Pause frames
         0 15 collision frames               0 Symbol error frames
         0 Excessive collisions
         0 Late collisions                   0 Invalid frames, too large
         0 VLAN discard frames               0 Valid frames, too large
         0 Excess defer frames               0 Invalid frames, too small
         0 64 byte frames                    0 Valid frames, too small
         0 127 byte frames
         0 255 byte frames                   0 Too old frames
         0 511 byte frames                   0 Valid oversize frames
         0 1023 byte frames                  0 System FCS error frames
         0 1518 byte frames                  0 RxPortFifoFull drop frame
         0 Too large frames
         0 Good (1 coll) frames

Table 2-7 Transmit Field Descriptions 

Field
Description

Bytes

The total number of bytes sent on an interface.

Unicast Frames

The total number of frames sent to unicast addresses.

Multicast frames

The total number of frames sent to multicast addresses.

Broadcast frames

The total number of frames sent to broadcast addresses.

Too old frames

The number of frames dropped on the egress port because the packet aged out.

Deferred frames

The number of frames that are not sent after the time exceeds 2*maximum-packet time.

MTU exceeded frames

The number of frames that are larger than the maximum allowed frame size.

1 collision frames

The number of frames that are successfully sent on an interface after one collision occurs.

2 collision frames

The number of frames that are successfully sent on an interface after two collisions occur.

3 collision frames

The number of frames that are successfully sent on an interface after three collisions occur.

4 collision frames

The number of frames that are successfully sent on an interface after four collisions occur.

5 collision frames

The number of frames that are successfully sent on an interface after five collisions occur.

6 collision frames

The number of frames that are successfully sent on an interface after six collisions occur.

7 collision frames

The number of frames that are successfully sent on an interface after seven collisions occur.

8 collision frames

The number of frames that are successfully sent on an interface after eight collisions occur.

9 collision frames

The number of frames that are successfully sent on an interface after nine collisions occur.

10 collision frames

The number of frames that are successfully sent on an interface after ten collisions occur.

11 collision frames

The number of frames that are successfully sent on an interface after 11 collisions occur.

12 collision frames

The number of frames that are successfully sent on an interface after 12 collisions occur.

13 collision frames

The number of frames that are successfully sent on an interface after 13 collisions occur.

14 collision frames

The number of frames that are successfully sent on an interface after 14 collisions occur.

15 collision frames

The number of frames that are successfully sent on an interface after 15 collisions occur.

Excessive collisions

The number of frames that could not be sent on an interface after 16 collisions occur.

Late collisions

After a frame is sent, the number of frames dropped because late collisions were detected while the frame was sent.

VLAN discard frames

The number of frames dropped on an interface because the CFI1 bit is set.

Excess defer frames

The number of frames that are not sent after the time exceeds the maximum-packet time.

64 byte frames

The total number of frames sent on an interface that are 64 bytes.

127 byte frames

The total number of frames sent on an interface that are from 65 to 127 bytes.

255 byte frames

The total number of frames sent on an interface that are from 128 to 255 bytes.

511 byte frames

The total number of frames sent on an interface that are from 256 to 511 bytes.

1023 byte frames

The total number of frames sent on an interface that are from 512 to 1023 bytes.

1518 byte frames

The total number of frames sent on an interface that are from 1024 to 1518 bytes.

Too large frames

The number of frames sent on an interface that are larger than the maximum allowed frame size.

Good (1 coll) frames

The number of frames that are successfully sent on an interface after one collision occurs. This value does not include the number of frames that are not successfully sent after one collision occurs.

1 CFI = Canonical Format Indicator


Table 2-8 Receive Field Descriptions 

Field
Description

Bytes

The total amount of memory (in bytes) used by frames received on an interface, including the FCS1 value and the incorrectly formed frames. This value excludes the frame header bits.

Unicast frames

The total number of frames successfully received on the interface that are directed to unicast addresses.

Multicast frames

The total number of frames successfully received on the interface that are directed to multicast addresses.

Broadcast frames

The total number of frames successfully received on an interface that are directed to broadcast addresses.

Unicast bytes

The total amount of memory (in bytes) used by unicast frames received on an interface, including the FCS value and the incorrectly formed frames. This value excludes the frame header bits.

Multicast bytes

The total amount of memory (in bytes) used by multicast frames received on an interface, including the FCS value and the incorrectly formed frames. This value excludes the frame header bits.

Broadcast bytes

The total amount of memory (in bytes) used by broadcast frames received on an interface, including the FCS value and the incorrectly formed frames. This value excludes the frame header bits.

Alignment errors

The total number of frames received on an interface that have alignment errors.

FCS errors

The total number of frames received on an interface that have a valid length (in bytes) but do not have the correct FCS values.

Oversize frames

The number of frames received on an interface that are larger than the maximum allowed frame size.

Undersize frames

The number of frames received on an interface that are smaller than 64 bytes.

Collision fragments

The number of collision fragments received on an interface.

Minimum size frames

The total number of frames that are the minimum frame size.

65 to 127 byte frames

The total number of frames that are from 65 to 127 bytes.

128 to 255 byte frames

The total number of frames that are from 128 to 255 bytes.

256 to 511 byte frames

The total number of frames that are from 256 to 511 bytes.

512 to 1023 byte frames

The total number of frames that are from 512 to 1023 bytes.

1024 to 1518 byte frames

The total number of frames that are from 1024 to 1518 bytes.

Overrun frames

The total number of overrun frames received on an interface.

Pause frames

The number of pause frames received on an interface.

Symbol error frames

The number of frames received on an interface that have symbol errors.

Invalid frames, too large

The number of frames received that were larger than maximum allowed MTU2 size (including the FCS bits and excluding the frame header) and that have either an FCS error or an alignment error.

Valid frames, too large

The number of frames received on an interface that are larger than the maximum allowed frame size.

Invalid frames, too small

The number of frames received that are smaller than 64 bytes (including the FCS bits and excluding the frame header) and that have either an FCS error or an alignment error.

Valid frames, too small

The number of frames received on an interface that are smaller than 64 bytes (or 68 bytes for VLAN-tagged frames) and that have valid FCS values. The frame size includes the FCS bits but excludes the frame header bits.

Too old frames

The number of frames dropped on the ingress port because the packet aged out.

Valid oversize frames

The number of frames received on an interface that are larger than the maximum allowed frame size and have valid FCS values. The frame size includes the FCS value but does not include the VLAN tag.

System FCS error frames

The total number of frames received on an interface that have a valid length (in bytes) but that do not have the correct FCS values.

RxPortFifoFull drop frames

The total number of frames received on an interface that are dropped because the ingress queue is full.

1 FCS = frame check sequence

2 MTU = maximum transmission unit


This is an example of output from the show controllers ethernet-controller phy command for a specific interface:

Switch# show controllers ethernet-controller gigabitethernet0/2 phy
GigabitEthernet0/2 (gpn: 2, port-number: 2)
-----------------------------------------------------------
============================================================
Port    Conf-Media   Active-Media Attached                  
------- ------------ ------------ --------------------------
Gi0/1   auto-select  none         0 -Not Present
Gi0/2   auto-select  none         0 -Not Present
============================================================
Other Information
-------------------------------------------------------
Port asic num         : 0
Port asic port num    : 1
XCVR init completed   : 0
Embedded PHY          : not present
SFP presence index    : 0
SFP iter cnt          : 2564163d
SFP failed oper flag  : 0x00000000
IIC error cnt         : 0
IIC error dsb cnt     : 0
IIC max sts cnt       : 0
Chk for link status   : 1
Link Status           : 0
<output truncated>

This is an example of output from the show controllers ethernet-controller port-asic configuration command:

Switch# show controllers ethernet-controller port-asic configuration
========================================================================
Switch 1, PortASIC 0 Registers
------------------------------------------------------------------------
DeviceType                         : 000101BC
Reset                              : 00000000
PmadMicConfig                      : 00000001
PmadMicDiag                        : 00000003
SupervisorReceiveFifoSramInfo      : 000007D0 000007D0 40000000
SupervisorTransmitFifoSramInfo     : 000001D0 000001D0 40000000
GlobalStatus                       : 00000800
IndicationStatus                   : 00000000
IndicationStatusMask               : FFFFFFFF
InterruptStatus                    : 00000000
InterruptStatusMask                : 01FFE800
SupervisorDiag                     : 00000000
SupervisorFrameSizeLimit           : 000007C8
SupervisorBroadcast                : 000A0F01
GeneralIO                          : 000003F9 00000000 00000004
StackPcsInfo                       : FFFF1000 860329BD 5555FFFF FFFFFFFF
                                     FF0FFF00 86020000 5555FFFF 00000000
StackRacInfo                       : 73001630 00000003 7F001644 00000003
                                     24140003 FD632B00 18E418E0 FFFFFFFF
StackControlStatus                 : 18E418E0
stackControlStatusMask             : FFFFFFFF
TransmitBufferFreeListInfo         : 00000854 00000800 00000FF8 00000000
                                     0000088A 0000085D 00000FF8 00000000
TransmitRingFifoInfo               : 00000016 00000016 40000000 00000000
                                     0000000C 0000000C 40000000 00000000
TransmitBufferInfo                 : 00012000 00000FFF 00000000 00000030
TransmitBufferCommonCount          : 00000F7A
TransmitBufferCommonCountPeak      : 0000001E
TransmitBufferCommonCommonEmpty    : 000000FF
NetworkActivity                    : 00000000 00000000 00000000 02400000
DroppedStatistics                  : 00000000
FrameLengthDeltaSelect             : 00000001
SneakPortFifoInfo                  : 00000000
MacInfo                            : 0EC0801C 00000001 0EC0801B 00000001
                                     00C0001D 00000001 00C0001E 00000001

<output truncated>

This is an example of output from the show controllers ethernet-controller port-asic statistics command:

Switch# show controllers ethernet-controller port-asic statistics
===========================================================================
 Switch 1, PortASIC 0 Statistics
---------------------------------------------------------------------------
         0 RxQ-0, wt-0 enqueue frames            0 RxQ-0, wt-0 drop frames
   4118966 RxQ-0, wt-1 enqueue frames            0 RxQ-0, wt-1 drop frames
         0 RxQ-0, wt-2 enqueue frames            0 RxQ-0, wt-2 drop frames

         0 RxQ-1, wt-0 enqueue frames            0 RxQ-1, wt-0 drop frames
       296 RxQ-1, wt-1 enqueue frames            0 RxQ-1, wt-1 drop frames
   2836036 RxQ-1, wt-2 enqueue frames            0 RxQ-1, wt-2 drop frames

         0 RxQ-2, wt-0 enqueue frames            0 RxQ-2, wt-0 drop frames
         0 RxQ-2, wt-1 enqueue frames            0 RxQ-2, wt-1 drop frames
    158377 RxQ-2, wt-2 enqueue frames            0 RxQ-2, wt-2 drop frames

         0 RxQ-3, wt-0 enqueue frames            0 RxQ-3, wt-0 drop frames
         0 RxQ-3, wt-1 enqueue frames            0 RxQ-3, wt-1 drop frames
         0 RxQ-3, wt-2 enqueue frames            0 RxQ-3, wt-2 drop frames


        15 TxBufferFull Drop Count               0 Rx Fcs Error Frames
         0 TxBufferFrameDesc BadCrc16            0 Rx Invalid Oversize Frames
         0 TxBuffer Bandwidth Drop Cou           0 Rx Invalid Too Large Frames
         0 TxQueue Bandwidth Drop Coun           0 Rx Invalid Too Large Frames
         0 TxQueue Missed Drop Statist           0 Rx Invalid Too Small Frames
        74 RxBuffer Drop DestIndex Cou           0 Rx Too Old Frames
         0 SneakQueue Drop Count                 0 Tx Too Old Frames
         0 Learning Queue Overflow Fra           0 System Fcs Error Frames
         0 Learning Cam Skip Count

        15 Sup Queue 0 Drop Frames               0 Sup Queue 8 Drop Frames
         0 Sup Queue 1 Drop Frames               0 Sup Queue 9 Drop Frames
         0 Sup Queue 2 Drop Frames               0 Sup Queue 10 Drop Frames
         0 Sup Queue 3 Drop Frames               0 Sup Queue 11 Drop Frames
         0 Sup Queue 4 Drop Frames               0 Sup Queue 12 Drop Frames
         0 Sup Queue 5 Drop Frames               0 Sup Queue 13 Drop Frames
         0 Sup Queue 6 Drop Frames               0 Sup Queue 14 Drop Frames
         0 Sup Queue 7 Drop Frames               0 Sup Queue 15 Drop Frames
===========================================================================
 Switch 1, PortASIC 1 Statistics
---------------------------------------------------------------------------
         0 RxQ-0, wt-0 enqueue frames            0 RxQ-0, wt-0 drop frames
        52 RxQ-0, wt-1 enqueue frames            0 RxQ-0, wt-1 drop frames
         0 RxQ-0, wt-2 enqueue frames            0 RxQ-0, wt-2 drop frames

<output truncated>

Related Commands

Command
Description

show controllers cpu-interface

Displays the state of the CPU network ASIC and send and receive statistics for packets reaching the CPU.

show controllers tcam

Displays the state of registers for all ternary content addressable memory (TCAM) in the system and for TCAM interface ASICs that are CAM controllers.


show controllers tcam

Use the show controllers tcam privileged EXEC command to display the state of the registers for all ternary content addressable memory (TCAM) in the system and for all TCAM interface ASICs that are CAM controllers.

show controllers tcam [asic [number]] [detail] [ | {begin | exclude | include} expression]

Syntax Description

asic

(Optional) Display port ASIC TCAM information.

number

(Optional) Display information for the specified port ASIC number. The range is from 0 to 15.

detail

(Optional) Display detailed TCAM register information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show controllers tcam command:

Switch# show controllers tcam
------------------------------------------------------------------------
TCAM-0 Registers
------------------------------------------------------------------------
  REV:    00B30103
  SIZE:   00080040
  ID:     00000000
  CCR:    00000000_F0000020

  RPID0:  00000000_00000000
  RPID1:  00000000_00000000
  RPID2:  00000000_00000000
  RPID3:  00000000_00000000

  HRR0:   00000000_E000CAFC
  HRR1:   00000000_00000000
  HRR2:   00000000_00000000
  HRR3:   00000000_00000000
  HRR4:   00000000_00000000
  HRR5:   00000000_00000000
  HRR6:   00000000_00000000
  HRR7:   00000000_00000000
<output truncated>

  GMR31:  FF_FFFFFFFF_FFFFFFFF
  GMR32:  FF_FFFFFFFF_FFFFFFFF
  GMR33:  FF_FFFFFFFF_FFFFFFFF

=============================================================================
 TCAM related PortASIC 1 registers
=============================================================================
LookupType:                   89A1C67D_24E35F00
LastCamIndex:                 0000FFE0
LocalNoMatch:                 000069E0
ForwardingRamBaseAddress:
                              00022A00 0002FE00 00040600 0002FE00 0000D400
                              00000000 003FBA00 00009000 00009000 00040600
                              00000000 00012800 00012900

Related Commands

Command
Description

show controllers cpu-interface

Displays the state of the CPU network ASIC and send and receive statistics for packets reaching the CPU.

show controllers ethernet-controller

Displays per-interface send and receive statistics read from the hardware or the interface internal registers.


show controllers utilization

Use the show controllers utilization user EXEC command to display bandwidth utilization on the switch or specific ports.

show controllers [interface-id] utilization [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) ID of the switch interface.

| begin

(Optional) Display begins with the line that matches the specified expression.

| exclude

(Optional) Display excludes lines that match the specified expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show controllers utilization command.

Switch> show controllers utilization
Port       Receive Utilization  Transmit Utilization
Fa0/1            0                    0
Fa0/2            0                    0
Fa0/3            0                    0
Fa0/4            0                    0
Fa0/5            0                    0
Fa0/6            0                    0
Fa0/7            0                    0
<output truncated>

<output truncated>

Switch Receive Bandwidth Percentage Utilization  : 0
Switch Transmit Bandwidth Percentage Utilization : 0

Switch Fabric Percentage Utilization : 0

This is an example of output from the show controllers utilization command on a specific port:

Switch> show controllers gigabitethernet0/1 utilization
Receive Bandwidth Percentage Utilization   : 0
Transmit Bandwidth Percentage Utilization  : 0

Table 2-9 show controllers utilization Field Descriptions

Field
Description

Receive Bandwidth Percentage Utilization

Displays the received bandwidth usage of the switch, which is the sum of the received traffic on all the ports divided by the switch receive capacity.

Transmit Bandwidth Percentage Utilization

Displays the transmitted bandwidth usage of the switch, which is the sum of the transmitted traffic on all the ports divided it by the switch transmit capacity.

Fabric Percentage Utilization

Displays the average of the transmitted and received bandwidth usage of the switch.


Related Commands

Command
Description

show controllers ethernet-controller

Displays the interface internal registers.


show dot1x

Use the show dot1x user EXEC command to display IEEE 802.1x statistics, administrative status, and operational status for the switch or for the specified port.

show dot1x [{all [summary] | interface interface-id} [details | statistics]] [ | {begin | exclude | include} expression]

Syntax Description

all [summary]

(Optional) Display the IEEE 802.1x status for all ports.

interface interface-id

(Optional) Display the IEEE 802.1x status for the specified port (including type, module, and port number).

details

(Optional) Display the IEEE 802.1x interface details.

statistics

(Optional) Display IEEE 802.1x statistics for the specified port.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you do not specify a port, global parameters and a summary appear. If you specify a port, details for that port appear.

If the port control is configured as unidirectional or bidirectional control and this setting conflicts with the switch configuration, the show dot1x {all | interface interface-id} privileged EXEC command output has this information:

ControlDirection          = In (Inactive)

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output appear.

Examples

This is an example of output from the show dot1x user EXEC command:

Switch> show dot1x 
Sysauthcontrol              Enabled
Dot1x Protocol Version            2
Critical Recovery Delay         100
Critical EAPOL             Disabled

This is an example of output from the show dot1x all user EXEC command:

Switch> show dot1x all
Sysauthcontrol              Enabled
Dot1x Protocol Version            2
Critical Recovery Delay         100
Critical EAPOL             Disabled

Dot1x Info for GigabitEthernet0/1
-----------------------------------
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = Both
HostMode                  = SINGLE_HOST
ReAuthentication          = Disabled
QuietPeriod               = 60
ServerTimeout             = 30
SuppTimeout               = 30
ReAuthPeriod              = 3600 (Locally configured)
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
RateLimitPeriod           = 0

<output truncated>

This is an example of output from the show dot1x all summary user EXEC command:

Interface       PAE     Client          Status
--------------------------------------------------------
Gi0/1         AUTH    none            UNAUTHORIZED
Gi0/2         AUTH    00a0.c9b8.0072  AUTHORIZED
Gi0/3         AUTH    none            UNAUTHORIZED

This is an example of output from the show dot1x interface interface-id user EXEC command:

Switch> show dot1x interface gigabitethernet0/2
Dot1x Info for GigabitEthernet0/2
-----------------------------------
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = In
HostMode                  = SINGLE_HOST
ReAuthentication          = Disabled
QuietPeriod               = 60
ServerTimeout             = 30
SuppTimeout               = 30
ReAuthPeriod              = 3600 (Locally configured)
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
RateLimitPeriod           = 0

This is an example of output from the show dot1x interface interface-id details user EXEC command:

Switch# show dot1x interface gigabitethernet0/2 details
Dot1x Info for GigabitEthernet0/2
-----------------------------------
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = Both
HostMode                  = SINGLE_HOST
ReAuthentication          = Disabled
QuietPeriod               = 60
ServerTimeout             = 30
SuppTimeout               = 30
ReAuthPeriod              = 3600 (Locally configured)
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
RateLimitPeriod           = 0

Dot1x Authenticator Client List Empty

This is an example of output from the show dot1x interface interface-id details commmand when a port is assigned to a guest VLAN and the host mode changes to multiple-hosts mode:

Switch# show dot1x interface gigabitethernet0/1 details
Dot1x Info for GigabitEthernet0/1
-----------------------------------
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = Both 
HostMode                  = SINGLE_HOST
ReAuthentication          = Enabled
QuietPeriod               = 60
ServerTimeout             = 30
SuppTimeout               = 30
ReAuthPeriod              = 3600 (Locally configured)
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
RateLimitPeriod           = 0
Guest-Vlan                = 182

Dot1x Authenticator Client List Empty

Port Status               = AUTHORIZED
Authorized By             = Guest-Vlan
Operational HostMode      = MULTI_HOST 
Vlan Policy               = 182


This is an example of output from the show dot1x interface interface-id statistics command. Table 2-10 describes the fields in the display.

Switch> show dot1x interface gigabitethernet0/2 statistics
Dot1x Authenticator Port Statistics for GigabitEthernet0/2
--------------------------------------------
RxStart = 0     RxLogoff = 0    RxResp = 1      RxRespID = 1
RxInvalid = 0   RxLenErr = 0    RxTotal = 2

TxReq = 2       TxReqID = 132   TxTotal = 134

RxVersion = 2   LastRxSrcMAC = 00a0.c9b8.0072

Table 2-10 show dot1x statistics Field Descriptions 

Field
Description

RxStart

Number of valid EAPOL-start frames that have been received.

RxLogoff

Number of EAPOL-logoff frames that have been received.

RxResp

Number of valid EAP-response frames (other than response/identity frames) that have been received.

RxRespID

Number of EAP-response/identity frames that have been received.

RxInvalid

Number of EAPOL frames that have been received and have an unrecognized frame type.

RxLenError

Number of EAPOL frames that have been received in which the packet body length field is invalid.

RxTotal

Number of valid EAPOL frames of any type that have been received.

TxReq

Number of EAP-request frames (other than request/identity frames) that have been sent.

TxReqId

Number of Extensible Authentication Protocol (EAP)-request/identity frames that have been sent.

TxTotal

Number of Extensible Authentication Protocol over LAN (EAPOL) frames of any type that have been sent.

RxVersion

Number of received packets in the IEEE 802.1x Version 1 format.

LastRxSrcMac

Source MAC address carried in the most recently received EAPOL frame.


Related Commands

Command
Description

dot1x default

Resets the IEEE 802.1x parameters to their default values.


show dtp

Use the show dtp privileged EXEC command to display Dynamic Trunking Protocol (DTP) information for the switch or for a specified interface.

show dtp [interface interface-id] [ | {begin | exclude | include} expression]

Syntax Description

interface interface-id

(Optional) Display port security settings for the specified interface. Valid interfaces include physical ports (including type, module, and port number).

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show dtp command:

Switch# show dtp
Global DTP information
        Sending DTP Hello packets every 30 seconds
        Dynamic Trunk timeout is 300 seconds
        21 interfaces using DTP

This is an example of output from the show dtp interface command:

Switch# show dtp interface gigabitethernet0/1
DTP information for GigabitEthernet0/1:
  TOS/TAS/TNS:                              ACCESS/AUTO/ACCESS
  TOT/TAT/TNT:                              NATIVE/NEGOTIATE/NATIVE
  Neighbor address 1:                       000943A7D081
  Neighbor address 2:                       000000000000
  Hello timer expiration (sec/state):       1/RUNNING
  Access timer expiration (sec/state):      never/STOPPED
  Negotiation timer expiration (sec/state): never/STOPPED
  Multidrop timer expiration (sec/state):   never/STOPPED
  FSM state:                                S2:ACCESS
  # times multi & trunk                     0
  Enabled:                                  yes
  In STP:                                   no

  Statistics
  ----------
  3160 packets received (3160 good)
  0 packets dropped
      0 nonegotiate, 0 bad version, 0 domain mismatches, 0 bad TLVs, 0 other
  6320 packets output (6320 good)
      3160 native
  0 output errors
  0 trunk timeouts
  1 link ups, last link up on Mon Mar 01 1993, 01:02:29
  0 link downs

Related Commands

Command
Description

show interfaces trunk

Displays interface trunking information.


show eap

Use the show eap privileged EXEC command to display Extensible Authentication Protocol (EAP) registration and session information for the switch or for the specified port.

show eap {{registrations [method [name] | transport [name]]} | {sessions [credentials name [interface interface-id] | interface interface-id | method name | transport name]}} [credentials name | interface interface-id | transport name] [ | {begin | exclude | include} expression]

Syntax Description

registrations

Display EAP registration information.

method name

(Optional) Display EAP method registration information.

transport name

(Optional) Display EAP transport registration information.

sessions

Display EAP session information.

credentials name

(Optional) Display EAP method registration information.

interface interface-id

(Optional) Display the EAP information for the specified port (including type, module, and port number).

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

When you use the show eap registrations privileged EXEC command with these keywords, the command output shows this information:

None—All the lower levels used by EAP and the registered EAP methods.

method name keyword—The specified method registrations.

transport name keyword—The specific lower-level registrations.

When you use the show eap sessions privileged EXEC command with these keywords, the command output shows this information:

None—All active EAP sessions.

credentials name keyword—The specified credentials profile.

interface interface-id keyword—The parameters for the specified interface.

method name keyword—The specified EAP method.

transport name keyword—The specified lower layer.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output appear.

Examples

This is an example of output from the show eap registrations privileged EXEC command:

Switch> show eap registrations
Registered EAP Methods:
  Method  Type            Name
    4     Peer            MD5

Registered EAP Lower Layers:
  Handle  Type            Name
    2     Authenticator   Dot1x-Authenticator
    1     Authenticator   MAB

This is an example of output from the show eap registrations transport privileged user EXEC command:

Switch> show eap registrations transport all
Registered EAP Lower Layers:
  Handle  Type            Name
    2     Authenticator   Dot1x-Authenticator
    1     Authenticator   MAB

This is an example of output from the show eap sessions privileged EXEC command:

Switch> show eap sessions 
Role:                    Authenticator   Decision:                Fail
Lower layer:             Dot1x-AuthenticaInterface:               Gi0/1
Current method:          None            Method state:            Uninitialised
Retransmission count:    0  (max: 2)     Timer:                   Authenticator
ReqId Retransmit (timeout: 30s, remaining: 2s)
EAP handle:              0x5200000A      Credentials profile:     None
Lower layer context ID:  0x93000004      Eap profile name:        None
Method context ID:       0x00000000      Peer Identity:           None
Start timeout (s):       1               Retransmit timeout (s):  30 (30)
Current ID:              2               Available local methods: None

Role:                    Authenticator   Decision:                Fail
Lower layer:             Dot1x-AuthenticaInterface:               Gi0/2
Current method:          None            Method state:            Uninitialised
Retransmission count:    0  (max: 2)     Timer:                   Authenticator
ReqId Retransmit (timeout: 30s, remaining: 2s)
EAP handle:              0xA800000B      Credentials profile:     None
Lower layer context ID:  0x0D000005      Eap profile name:        None
Method context ID:       0x00000000      Peer Identity:           None
Start timeout (s):       1               Retransmit timeout (s):  30 (30)
Current ID:              2               Available local methods: None

<Output truncated>

This is an example of output from the show eap sessions interface interface-id privileged EXEC command:

Switch# show eap sessions gigabitethernet0/1
Role:                    Authenticator   Decision:                Fail
Lower layer:             Dot1x-AuthenticaInterface:               Gi0/1
Current method:          None            Method state:            Uninitialised
Retransmission count:    1  (max: 2)     Timer:                   Authenticator
ReqId Retransmit (timeout: 30s, remaining: 13s)
EAP handle:              0x5200000A      Credentials profile:     None
Lower layer context ID:  0x93000004      Eap profile name:        None
Method context ID:       0x00000000      Peer Identity:           None
Start timeout (s):       1               Retransmit timeout (s):  30 (30)
Current ID:              2               Available local methods: None

Related Commands

Command
Description

clear eap sessions

Clears EAP session information for the switch or for the specified port.


show env

Use the show env user EXEC command to display fan, temperature, redundant power system (RPS) availability, and power information for the switch.

show env {all | fan | power | rps| temperature} [ | {begin | exclude | include} expression]

Syntax Description

all

Display both fan and temperature environmental status.

fan

Display the switch fan status.

power

Display the switch power status.

rps

Display whether an RPS 300 Redundant Power System is connected to the switch.

temperature

Display the switch temperature status.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show env all command:

Switch> show env all
FAN is OK
TEMPERATURE is OK
POWER is OK
RPS is AVAILABLE

This is an example of output from the show env fan command:

Switch> show env fan
FAN is OK

show errdisable detect

Use the show errdisable detect user EXEC command to display error-disabled detection status.

show errdisable detect [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

A displayed gbic-invalid error reason refers to an invalid small form-factor pluggable (SFP) module.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

The error-disable reasons in the command ouput are listed in alphabetical order. The mode column shows how error disable is configured for each feature.

You can configure error-disabled detection in these modes:

port mode—The entire physical port is error disabled if a violation occurs.

vlan mode—The VLAN is error disabled if a violation occurs.

port/vlan mode—The entire physical port is error disabled on some ports and per-VLAN error disabled on other ports.

Examples

This is an example of output from the show errdisable detect command:

Switch> show errdisable detect
ErrDisable Reason    Detection    Mode
-----------------    ---------    ----
arp-inspection       Enabled      port
bpduguard            Enabled      vlan
channel-misconfig    Enabled      port
community-limit      Enabled      port
dhcp-rate-limit      Enabled      port
dtp-flap             Enabled      port
gbic-invalid         Enabled      port
inline-power         Enabled      port
invalid-policy       Enabled      port
l2ptguard            Enabled      port
link-flap            Enabled      port
loopback             Enabled      port
lsgroup              Enabled      port
pagp-flap            Enabled      port
psecure-violation    Enabled      port/vlan
security-violatio    Enabled      port
sfp-config-mismat    Enabled      port
storm-control        Enabled      port
udld                 Enabled      port
vmps                 Enabled      port

Related Commands

Command
Description

errdisable detect cause

Enables error-disabled detection for a specific cause or all causes.

show errdisable flap-values

Displays error condition recognition information.

show errdisable recovery

Displays error-disabled recovery timer information.

show interfaces status

Displays interface status or a list of interfaces in error-disabled state.


show errdisable flap-values

Use the show errdisable flap-values user EXEC command to display conditions that cause an error to be recognized for a cause.

show errdisable flap-values [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

The Flaps column in the display shows how many changes to the state within the specified time interval will cause an error to be detected and a port to be disabled. For example, the display shows that an error will be assumed and the port shut down if three Dynamic Trunking Protocol (DTP)-state (port mode access/trunk) or Port Aggregation Protocol (PAgP) flap changes occur during a 30-second interval, or if 5 link-state (link up/down) changes occur during a 10-second interval.

ErrDisable Reason    Flaps    Time (sec)
-----------------    ------   ----------
pagp-flap              3       30
dtp-flap               3       30
link-flap              5       10

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show errdisable flap-values command:

Switch> show errdisable flap-values
ErrDisable Reason    Flaps    Time (sec)
-----------------    ------   ----------
pagp-flap              3       30
dtp-flap               3       30
link-flap              5       10

Related Commands

Command
Description

errdisable detect cause

Enables error-disabled detection for a specific cause or all causes.

show errdisable detect

Displays error-disabled detection status.

show errdisable recovery

Displays error-disabled recovery timer information.

show interfaces status

Displays interface status or a list of interfaces in error-disabled state.


show errdisable recovery

Use the show errdisable recovery user EXEC command to display the error-disabled recovery timer information.

show errdisable recovery [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

A gbic-invalid error-disable reason refers to an invalid small form-factor pluggable (SFP) module interface.

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show errdisable recovery command:

Switch> show errdisable recovery
ErrDisable Reason    Timer Status
-----------------    --------------
udld                 Disabled
bpduguard            Disabled
security-violatio    Disabled
channel-misconfig    Disabled
vmps                 Disabled
pagp-flap            Disabled
dtp-flap             Disabled
link-flap            Enabled
psecure-violation    Disabled
gbic-invalid         Disabled
dhcp-rate-limit      Disabled
unicast-flood        Disabled
storm-control        Disabled
loopback             Disabled

Timer interval:300 seconds

Interfaces that will be enabled at the next timeout:

Interface    Errdisable reason    Time left(sec)
---------    -----------------    --------------
Gi0/2        link-flap             279 


Note Though visible in the output, the unicast-flood field is not valid.


Related Commands

Command
Description

errdisable recovery

Configures the recover mechanism variables.

show errdisable detect

Displays error-disabled detection status.

show errdisable flap-values

Displays error condition recognition information.

show interfaces status

Displays interface status or a list of interfaces in error-disabled state.


show etherchannel

Use the show etherchannel user EXEC command to display EtherChannel information for a channel.

show etherchannel [channel-group-number {detail | port | port-channel | protocol | summary}] {detail | load-balance | port | port-channel | protocol | summary} [ | {begin | exclude | include} expression]

Syntax Description

channel-group-number

(Optional) Number of the channel group. The range is 1 to 6.

detail

Display detailed EtherChannel information.

load-balance

Display the load-balance or frame-distribution scheme among ports in the port channel.

port

Display EtherChannel port information.

port-channel

Display port-channel information.

protocol

Display the protocol that is being used in the EtherChannel.

summary

Display a one-line summary per channel-group.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you do not specify a channel-group, all channel groups are displayed.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show etherchannel 1 detail command:

Switch> show etherchannel 1 detail
Group state = L2
Ports: 2   Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol:   LACP
                Ports in the group:
                -------------------
Port: Gi0/1
------------

Port state    = Up Mstr In-Bndl
Channel group = 1           Mode = Active      Gcchange = -
Port-channel  = Po1         GC   =   -         Pseudo port-channel = Po1
Port index    = 0           Load = 0x00        Protocol =   LACP

Flags:  S - Device is sending Slow LACPDUs   F - Device is sending fast LACPDU
        A - Device is in active mode.        P - Device is in passive mode.

Local information:
                            LACP port     Admin     Oper    Port     Port
Port      Flags   State     Priority      Key       Key     Number   State
Gi0/1     SA      bndl      32768         0x0       0x1     0x0      0x3D

Age of the port in the current state: 01d:20h:06m:04s
          
                Port-channels in the group:
                ----------------------

Port-channel: Po1    (Primary Aggregator)
------------

Age of the Port-channel   = 01d:20h:20m:26s
Logical slot/port   = 10/1          Number of ports = 2
HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =   LACP

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  0     00     Gi0/1    Active          0
  0     00     Gi0/2    Active          0

Time since last port bundled:    01d:20h:20m:20s    Gi0/2

This is an example of output from the show etherchannel 1 summary command:

Switch> show etherchannel 1 summary
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        u - unsuitable for bundling
        U - in use      f - failed to allocate aggregator
        d - default port

Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+----------------------------------------
1      Po1(SU)         LACP      Gi0/1(P)    Gi0/2(P) 

This is an example of output from the show etherchannel 1 port-channel command:

Switch> show etherchannel 1 port-channel 
                Port-channels in the group: 
                ----------------------
Port-channel: Po1    (Primary Aggregator)

------------

Age of the Port-channel   = 01d:20h:24m:50s
Logical slot/port   = 10/1          Number of ports = 2
HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =   LACP

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  0     00     Gi0/1    Active          0
  0     00     Gi0/2    Active          0

Time since last port bundled:    01d:20h:24m:44s    Gi0/2

This is an example of output from the show etherchannel protocol command:

Switch# show etherchannel protocol
                Channel-group listing:
                -----------------------
Group: 1
----------
Protocol:  LACP

Group: 2
----------
Protocol:  PAgP

Related Commands

Command
Description

channel-group

Assigns an Ethernet port to an EtherChannel group.

channel-protocol

Restricts the protocol used on a port to manage channeling.

interface port-channel

Accesses or creates the port channel.


show fallback profile

Use the show fallback profile privileged EXEC command to display the fallback profiles that are configured on a switch.

show fallback profile [append | begin | exclude | include | { [redirect | tee] url} expression]

Syntax Description

| append

(Optional) Append redirected output to a specified URL

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

| redirect

(Optional) Copy output to a specified URL.

| tee

(Optional) Copy output to a specified URL.

expression

Expression in the output to use as a reference point.

url

Specified URL where output is directed.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use the show fallback profile privileged EXEC command to display profiles that are configured on the switch.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show fallback profile command:

switch# show fallback profile 
Profile Name: dot1x-www
------------------------------------
Description       : NONE
IP Admission Rule : webauth-fallback
IP Access-Group IN: default-policy
Profile Name: dot1x-www-lpip
------------------------------------
Description       : NONE
IP Admission Rule : web-lpip
IP Access-Group IN: default-policy
Profile Name: profile1
------------------------------------
Description       : NONE
IP Admission Rule : NONE
IP Access-Group IN: NONE

Related Commands

Command
Description

dot1x fallback profile

Configure a port to use web authentication as a fallback method for clients that do not support IEEE 802.1x authentication.

fallback profile profile

Create a web authentication fallback profile.

show dot1x [interface interface-id]

Displays IEEE 802.1x status for the specified port.


show flowcontrol

Use the show flowcontrol user EXEC command to display the flow control status and statistics.

show flowcontrol [interface interface-id | module number] [ | {begin | exclude | include} expression]

Syntax Description

interface interface-id

(Optional) Display the flow control status and statistics for a specific interface.

module number

(Optional) Display the flow control status and statistics for all interfaces on the switch. The only valid module number is 1. This option is not available if you have entered a specific interface ID.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use this command to display the flow control status and statistics on the switch or for a specific interface.

Use the show flowcontrol command to display information about all the switch interfaces. The output from the show flowcontrol command is the same as the output from the show flowcontrol module number command.

Use the show flowcontrol interface interface-id command to display information about a specific interface.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show flowcontrol command.

Switch> show flowcontrol
Port       Send FlowControl  Receive FlowControl  RxPause TxPause
           admin    oper     admin    oper
---------  -------- -------- -------- --------    ------- -------
Gi0/1      Unsupp.  Unsupp.  off      off         0       0
Gi0/2      desired  off      off      off         0       0
Gi0/3      desired  off      off      off         0       0
<output truncated>

This is an example of output from the show flowcontrol interface interface-id command:

Switch> show flowcontrol gigabitethernet0/2
Port       Send FlowControl  Receive FlowControl  RxPause TxPause
           admin    oper     admin    oper
---------  -------- -------- -------- --------    ------- -------
Gi0/2      desired  off      off      off         0       0

Related Commands

Command
Description

flowcontrol

Sets the receive flow-control state for an interface.


show interfaces

Use the show interfaces privileged EXEC command to display the administrative and operational status of all interfaces or a specified interface.

show interfaces [interface-id | vlan vlan-id] [accounting | capabilities [module number] | counters | description | etherchannel | flowcontrol | pruning | stats | status [err-disabled] | switchport [backup | module number] | transceiver [properties | detail] [module number] | trunk] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) Valid interfaces include physical ports (including type, module, and port number) and port channels. The port-channel range is 1 to 6.

vlan vlan-id

(Optional) VLAN identification. The range is 1 to 4094.

accounting

(Optional) Display accounting information on the interface, including active protocols and input and output packets and octets.

Note The display shows only packets processed in software; hardware-switched packets do not appear.

capabilities

(Optional) Display the capabilities of all interfaces or the specified interface, including the features and options that you can configure on the interface. Though visible in the command line help, this option is not available for VLAN IDs.

module number

(Optional) Display capabilities, switchport configuration, or transceiver characteristics (depending on preceding keyword) of all interfaces on the switch. The only valid module number is 1. This option is not available if you entered a specific interface ID.

counters

(Optional) See the show interfaces counters command.

description

(Optional) Display the administrative status and description set for an interface.

etherchannel

(Optional) Display interface EtherChannel information.

flowcontrol

(Optional) Display interface flowcontrol information

pruning

(Optional) Display interface trunk VTP pruning information.

stats

(Optional) Display the input and output packets by switching path for the interface.

status

(Optional) Display the status of the interface. A status of unsupported in the Type field means that a non-Cisco small form-factor pluggable (SFP) module is inserted in the module slot.

err-disabled

(Optional) Display interfaces in error-disabled state.

switchport

(Optional) Display the administrative and operational status of a switching port, including port blocking and port protection settings.

backup

(Optional) Display Flex Link backup interface configuration and status for the specified interface or all interfaces on the switch.

transceiver [detail | properties]

(Optional) Display the physical properties of a CWDM1 or DWDM2 small form-factor (SFP) module interface. The keywords have these meanings:

detail(Optional) Display calibration properties, including high and low numbers and any alarm information.

properties—(Optional) Display speed and duplex settings on an interface.

trunk

Display interface trunk information. If you do not specify an interface, only information for active trunking ports appears.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.

1 coarse wavelength-division multiplexer

2 dense wavelength-division multiplexer



Note Though visible in the command-line help strings, the crb, fair-queue, irb, mac-accounting, precedence, random-detect, rate-limit, and shape keywords are not supported.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

The show interfaces capabilities command with different keywords has these results:

Use the show interfaces capabilities module 1 to display the capabilities of all interfaces on the switch. Entering any other number is invalid.

Use the show interfaces interface-id capabilities to display the capabilities of the specified interface.

Use the show interfaces capabilities (with no module number or interface ID) to display the capabilities of all interfaces on the switch.

Use the show interfaces switchport module 1 to display the switch port characteristics of all interfaces on the switch. Entering any other number is invalid.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of output from the show interfaces command for an interface:

Switch# show interfaces gigabitethernet0/2 
GigabitEthernet0/2 is down, line protocol is down
  Hardware is Gigabit Ethernet, address is 0009.43a7.d085 (bia 0009.43a7.d085)
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed
  input flow-control is off, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output never, output hang never
  Last clearing of "show interfaces" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue :0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     2 packets input, 1040 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     4 packets output, 1040 bytes, 0 underruns
     0 output errors, 0 collisions, 3 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

This is an example of output from the show interfaces accounting command.

Switch# show interfaces accounting
Vlan1
                Protocol    Pkts In   Chars In   Pkts Out  Chars Out
                      IP    1094395  131900022     559555   84077157
           Spanning Tree     283896   17033760         42       2520
                     ARP      63738    3825680        231      13860
Interface Vlan2 is disabled
Vlan7
                Protocol    Pkts In   Chars In   Pkts Out  Chars Out
No traffic sent or received on this interface.
Vlan31
                Protocol    Pkts In   Chars In   Pkts Out  Chars Out
No traffic sent or received on this interface.

GigabitEthernet0/1
                Protocol    Pkts In   Chars In   Pkts Out  Chars Out
No traffic sent or received on this interface.
GigabitEthernet0/2
                Protocol    Pkts In   Chars In   Pkts Out  Chars Out
No traffic sent or received on this interface.

<output truncated>

This is an example of output from the show interfaces capabilities command for an interface.

Switch# show interfaces gigabitethernet0/2 capabilities
GigabitEthernet0/2
  Model:                 WS-C2960G-24TC-L
Type:                  10/100/1000BaseTX
  Speed:                 10,100,1000,auto
  Duplex:                full,auto
  Trunk encap. type:     802.1Q
  Trunk mode:            on,off,desirable,nonegotiate
  Channel:               yes
  Broadcast suppression: percentage(0-100)
  Flowcontrol:           rx-(off,on,desired),tx-(none)
  Fast Start:            yes
  QoS scheduling:        rx-(not configurable on per port basis),tx-(4q2t)
  CoS rewrite:           yes
  ToS rewrite:           yes
  UDLD:                  yes
  Inline power:          no
  SPAN:                  source/destination
  PortSecure:            yes
  Dot1x:                 yes
  Multiple Media Types:  rj45, sfp, auto-select 

This is an example of output from the show interfaces interface description command when the interface has been described as Connects to Marketing by using the description interface configuration command.

Switch# show interfaces gigabitethernet0/2 description
Interface Status         Protocol Description
Gi0/2       up             down     Connects to Marketing

This is an example of output from the show interfaces etherchannel command when port channels are configured on the switch:

Switch# show interfaces etherchannel
----
Port-channel1:
Age of the Port-channel   = 03d:20h:17m:29s
Logical slot/port   = 10/1           Number of ports = 0
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Not-Inuse

Port-channel2:
Age of the Port-channel   = 03d:20h:17m:29s
Logical slot/port   = 10/2           Number of ports = 0
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Not-Inuse

Port-channel3:
Age of the Port-channel   = 03d:20h:17m:29s
Logical slot/port   = 10/3           Number of ports = 0
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Not-Inuse

This is an example of output from the show interfaces interface-id pruning command when pruning is enabled in the VTP domain:

Switch# show interfaces gigibitethernet0/2 pruning
Port    Vlans pruned for lack of request by neighbor
Gi0/2     3,4

Port    Vlans traffic requested of neighbor
Gi0/2     1-3

This is an example of output from the show interfaces stats command for a specified VLAN interface.

Switch# show interfaces vlan 1 stats
Switching path    Pkts In   Chars In   Pkts Out  Chars Out
        Processor    1165354  136205310     570800   91731594
      Route cache          0          0          0          0
            Total    1165354  136205310     570800   91731594

This is an example of partial output from the show interfaces status command. It displays the status of all interfaces.

Switch# show interfaces status
Port      Name               Status       Vlan       Duplex  Speed Type
Gi0/1                        notconnect   1            auto   auto 10/100/1000BaseTX
Gi0/2                        notconnect   1            auto   auto 10/100/1000BaseTX
Gi0/3                        notconnect   1            auto   auto 10/100/1000BaseTX
Gi0/4                        notconnect   1            auto   auto 10/100/1000BaseTX
Gi0/5                        notconnect   1            auto   auto 10/100/1000BaseTX
Gi0/6                        notconnect   1            auto   auto 10/100/1000BaseTX

<output truncated>

This is an example of output from the show interfaces status err-disabled command. It displays the status of interfaces in the error-disabled state.

Switch# show interfaces status err-disabled 
Port      Name               Status       Reason
Gi0/2                        err-disabled dtp-flap

This is an example of output from the show interfaces switchport command for a port. Table 2-11 describes the fields in the display.


Note Private VLANs are not supported in this release, so those fields are not applicable.


Switch# show interfaces gigabitethernet0/1 switchport
Name: Gi0/1
Switchport: Enabled
Administrative Mode: dynamic auto
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Administrative private-vlan host-association:10 (VLAN0010) 502 (VLAN0502)
Administrative private-vlan 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
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled

Voice VLAN: none (Inactive)
Appliance trust: none

Table 2-11 show interfaces switchport Field Descriptions 

Field
Description

Name

Displays the port name.

Switchport

Displays the administrative and operational status of the port. In this display, the port is in switchport mode.

Administrative Mode

Operational Mode

Displays the administrative and operational modes.

Administrative Trunking Encapsulation

Operational Trunking Encapsulation

Negotiation of Trunking

Displays the administrative and operational encapsulation method and whether trunking negotiation is enabled.

Access Mode VLAN

Displays the VLAN ID to which the port is configured.

Trunking Native Mode VLAN

Trunking VLANs Enabled

Trunking VLANs Active

Lists the VLAN ID of the trunk that is in native mode. Lists the allowed VLANs on the trunk. Lists the active VLANs on the trunk.

Pruning VLANs Enabled

Lists the VLANs that are pruning-eligible.

Protected

Displays whether or not protected port is enabled (True) or disabled (False) on the interface.

Unknown unicast blocked

Unknown multicast blocked

Displays whether or not unknown multicast and unknown unicast traffic is blocked on the interface.

Voice VLAN

Displays the VLAN ID on which voice VLAN is enabled.

Appliance trust

Displays the class of service (CoS) setting of the data packets of the IP phone.


This is an example of output from the show interfaces switchport backup command:

Switch# show interfaces switchport backup
Switch Backup Interface Pairs:
     Active Interface    Backup Interface    State
     --------------------------------------------------------------
     Fa0/1               Fa0/2             Active Up/Backup Standby
     Fa0/3               Fa0/5             Active Down/Backup Up
     Po1                 Po2               Active Standby/Backup Up

This is an example of out put from the show interfaces switchport backup command when a Flex Link interface goes down (LINK_DOWN), and VLANs preferred on this interface are moved to the peer interface of the Flex Link pair. In this example, if interface Gi0/6 goes down, Gi0/8 carries all VLANs of the Flex Link pair.

Switch#show interfaces switchport backup
Switch Backup Interface Pairs:

Active Interface        Backup Interface        State
------------------------------------------------------------------------
GigabitEthernet0/6    GigabitEthernet0/8    Active Down/Backup Up

Vlans Preferred on Active Interface: 1-50
Vlans Preferred on Backup Interface: 60, 100-120

This is an example of output from the show interfaces switchport backup command. In this example, VLANs 1 to 50, 60, and 100 to 120 are configured on the switch:

Switch(config)#interface gigabitEthernet 0/6
Switch(config-if)#switchport backup interface gigabitEthernet 0/8 prefer vlan 60,100-120

When both interfaces are up, Gi0/8 forwards traffic for VLANs 60, 100 to 120, and Gi0/6 will forward traffic for VLANs 1 to 50.

Switch#show interfaces switchport backup
Switch Backup Interface Pairs:

Active Interface        Backup Interface        State
------------------------------------------------------------------------
GigabitEthernet0/6    GigabitEthernet0/8    Active Up/Backup Up

Vlans on Interface Gi 0/6: 1-50
Vlans on Interface Gi 0/8: 60, 100-120

When a Flex Link interface goes down (LINK_DOWN), VLANs preferred on this interface are moved to the peer interface of the Flex Link pair. In this example, if interface Gi0/6 goes down, Gi0/8 carries all VLANs of the Flex Link pair.

Switch#show interfaces switchport backup
Switch Backup Interface Pairs:

Active Interface        Backup Interface        State
------------------------------------------------------------------------
GigabitEthernet0/6    GigabitEthernet0/8    Active Down/Backup Up

Vlans on Interface Gi 0/6: 
Vlans on Interface Gi 0/8: 1-50, 60, 100-120

When a Flex Link interface comes up, VLANs preferred on this interface are blocked on the peer interface and moved to the forwarding state on the interface that has just come up. In this example, if interface Gi0/6 comes up, then VLANs preferred on this interface are blocked on the peer interface Gi0/8 and forwarded on Gi0/6.

Switch#show interfaces switchport backup
Switch Backup Interface Pairs:

Active Interface        Backup Interface        State
------------------------------------------------------------------------
GigabitEthernet0/6    GigabitEthernet0/8    Active Up/Backup Up

Vlans on Interface Gi 0/6: 1-50
Vlans on Interface Gi 0/8: 60, 100-120

This is an example of output from the show interfaces interface-id pruning command:

Switch# show interfaces gigibitethernet0/2 pruning
Port    Vlans pruned for lack of request by neighbor

This is an example of output from the show interfaces interface-id trunk command. It displays trunking information for the port.

Switch# show interfaces gigabitethernet0/1 trunk
Port          Mode         Encapsulation  Status        Native vlan
Gi0/1        auto         negotiate      trunking      1

Port          Vlans allowed on trunk
Gi0/1        1-4094

Port          Vlans allowed and active in management domain
Gi0/1        1-4

Port          Vlans in spanning tree forwarding state and not pruned
Gi0/1         1-4

This is an example of output from the show interfaces interface-id transceiver properties command:

Switch# show interfaces gigabitethernet0/1 transceiver properties
Name : Gi0/1
Administrative Speed: auto 
Operational Speed: auto 
Administrative Duplex: auto
Administrative Power Inline: N/A
Operational Duplex: auto
Administrative Auto-MDIX: off
Operational Auto-MDIX: off
Configured Media: sfp
Active Media: sfp
Attached: 10/100/1000BaseTX SFP-10/100/1000BaseTX

This is an example of output from the show interfaces interface-id transceiver detail command:

Switch# show interfaces gigabitethernet0/3 transceiver detail
ITU Channel not available (Wavelength not available),
Transceiver is externally calibrated.
mA:milliamperes, dBm:decibels (milliwatts), N/A:not applicable.
++:high alarm, +:high warning, -:low warning, -- :low alarm.
A2D readouts (if they differ), are reported in parentheses.
The threshold values are uncalibrated.

                            High Alarm  High Warn  Low Warn   Low Alarm
        Temperature         Threshold   Threshold  Threshold  Threshold
Port     (Celsius)          (Celsius)   (Celsius)  (Celsius)  (Celsius)
------- ------------------  ----------  ---------  ---------  ---------
Gi0/3   41.5                110.0       103.0      -8.0       -12.0

                            High Alarm  High Warn  Low Warn   Low Alarm
         Voltage            Threshold   Threshold  Threshold  Threshold
Port     (Volts)            (Volts)     (Volts)    (Volts)    (Volts)
-------  ---------------    ----------  ---------  ---------  ---------
Gi0/3    3.20               4.00        3.70       3.00       2.95

                            High Alarm  High Warn  Low Warn   Low Alarm
         Current            Threshold   Threshold  Threshold  Threshold
Port     (milliamperes)     (mA)        (mA)       (mA)       (mA)
-------  -----------------  ----------  ---------  ---------  ---------
Gi0/3    31.0               84.0        70.0       4.0        2.0

         Optical            High Alarm  High Warn  Low Warn   Low Alarm
         Transmit Power     Threshold   Threshold  Threshold  Threshold
Port     (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
-------  -----------------  ----------  ---------  ---------  ---------
Gi0/3    -0.0 ( -0.0)       -0.0        -0.0       -0.0       -0.0

         Optical            High Alarm  High Warn  Low Warn   Low Alarm
         Receive Power      Threshold   Threshold  Threshold  Threshold
Port     (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
-------  -----------------  ----------  ---------  ---------  ---------
Gi0/3    N/A  ( -0.0) --    -0.0        -0.0       -0.0       -0.0

Related Commands

Command
Description

switchport access

Configures a port as a static-access or a dynamic-access port.

switchport block

Blocks unknown unicast or multicast traffic on an interface.

switchport block

Configures Flex Links, a pair of Layer 2 interfaces that provide mutual backup.

switchport mode

Configures the VLAN membership mode of a port.

switchport protected

Isolates unicast, multicast, and broadcast traffic at Layer 2 from other protected ports on the same switch.

switchport trunk pruning

Configures the VLAN pruning-eligible list for ports in trunking mode.


show interfaces counters

Use the show interfaces counters privileged EXEC command to display various counters for the switch or for a specific interface.

show interfaces [interface-id | vlan vlan-id] counters [errors | etherchannel | protocol status | trunk] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) ID of the physical interface, including type, module, and port number.

errors

(Optional) Display error counters.

etherchannel

(Optional) Display EtherChannel counters, including octets, broadcast packets, multicast packets, and unicast packets received and sent.

protocol status

(Optional) Display status of protocols enabled on interfaces.

trunk

(Optional) Display trunk counters.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.



Note Though visible in the command-line help string, the vlan vlan-id keyword is not supported.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you do not enter any keywords, all counters for all interfaces are included.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is an example of partial output from the show interfaces counters command. It displays all counters for the switch.

Switch# show interfaces counters
Port            InOctets   InUcastPkts   InMcastPkts   InBcastPkts
Gi0/1                  0             0             0             0
Gi0/2                  0             0             0             0

<output truncated>

This is an example of partial output from the show interfaces counters protocol status command for all interfaces.

Switch# show interfaces counters protocol status
Protocols allocated:
 Vlan1: Other, IP
 Vlan20: Other, IP, ARP
 Vlan30: Other, IP, ARP
 Vlan40: Other, IP, ARP
 Vlan50: Other, IP, ARP
 Vlan60: Other, IP, ARP
 Vlan70: Other, IP, ARP
 Vlan80: Other, IP, ARP
 Vlan90: Other, IP, ARP
 Vlan900: Other, IP, ARP
 Vlan3000: Other, IP
 Vlan3500: Other, IP
 FastEthernet0/1: Other, IP, ARP, CDP
 FastEthernet0/2: Other, IP
 FastEthernet0/3: Other, IP
 FastEthernet0/4: Other, IP
 FastEthernet0/5: Other, IP
 FastEthernet0/6: Other, IP
 FastEthernet0/7: Other, IP
 FastEthernet0/8: Other, IP
 FastEthernet0/9: Other, IP
 FastEthernet0/10: Other, IP, CDP

<output truncated>

This is an example of output from the show interfaces counters trunk command. It displays trunk counters for all interfaces.

Switch# show interfaces counters trunk
Port        TrunkFramesTx  TrunkFramesRx  WrongEncap
Gi0/1                   0              0           0
Gi0/2                   0              0           0
Gi0/3               80678           4155           0
Gi0/4               82320            126           0
Gi1/0/5                  0               0           0

<output truncated>

Related Commands

Command
Description

show interfaces

Displays additional interface characteristics.


show inventory

Use the show inventory user EXEC command to display product identification (PID) information for the hardware.

show inventory [entity-name | raw] [ | {begin | exclude | include} expression]

Syntax Description

entity-name

(Optional) Display the specified entity. For example, enter the interface (such as gigabitethernet0/1) into which a small form-factor pluggable (SFP) module is installed.

raw

(Optional) Display every entity in the device.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

The command is case sensitive. With no arguments, the show inventory command produces a compact dump of all identifiable entities that have a product identifier. The compact dump displays the entity location (slot identity), entity description, and the unique device identifier (UDI) (PID, VID, and SN) of that entity.


Note If there is no PID, no output appears when you enter the show inventory command.


Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

This is example output from the show inventory command:

Switch> show inventory
NAME: "1", DESCR: "WS-C2960-48TC-L"
PID: WS-C2960-24TC-L   , VID: 02 , SN: FHH0923D075

NAME: "GigabitEthernet0/1", DESCR: "100BaseBX-10D SFP"
PID:                     , VID:    , SN: NEC09050251     

NAME: "GigabitEthernet0/2", DESCR: "100BaseBX-10U SFP"
PID:                     , VID:    , SN: NEC09050020     

show ip igmp profile

Use the show ip igmp profile privileged EXEC command to display all configured Internet Group Management Protocol (IGMP) profiles or a specified IGMP profile.

show ip igmp profile [profile number] [ | {begin | exclude | include} expression]

Syntax Description

profile number

(Optional) The IGMP profile number to be displayed. The range is 1 to 4294967295. If no profile number is entered, all IGMP profiles are displayed.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.

Examples

These are examples of output from the show ip igmp profile privileged EXEC command, with and without specifying a profile number. If no profile number is entered, the display includes all profiles configured on the switch.

Switch# show ip igmp profile 40
IGMP Profile 40
    permit
    range 233.1.1.1 233.255.255.255

Switch# show ip igmp profile
IGMP Profile 3
    range 230.9.9.0 230.9.9.0
IGMP Profile 4
    permit
    range 229.9.9.0 229.255.255.255

Related Commands

Command
Description

ip igmp profile

Configures the specified IGMP profile number.


show ip igmp snooping

Use the show ip igmp snooping user EXEC command to display the Internet Group Management Protocol (IGMP) snooping configuration of the switch or the VLAN.

show ip igmp snooping [groups | mrouter | querier] [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

groups

(Optional) See the show ip igmp snooping groups command.

mrouter

(Optional) See the show ip igmp snooping mrouter command.

querier

(Optional) See the show ip igmp snooping querier command.

vlan vlan-id

(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094 (available only in privileged EXEC mode).

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use this command to display snooping configuration for the switch or for a specific VLAN.

VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP snooping.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show ip igmp snooping vlan 1 command. It shows snooping characteristics for a specific VLAN.

Switch# show ip igmp snooping vlan 1
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping             :Enabled
IGMPv3 snooping (minimal) :Enabled
Report suppression        :Enabled
TCN solicit query         :Disabled
TCN flood query count     :2
Last member query interval : 100

Vlan 1:
--------
IGMP snooping                       :Enabled
Immediate leave                     :Disabled
Multicast router learning mode      :pim-dvmrp
Source only learning age timer      :10
CGMP interoperability mode          :IGMP_ONLY
Last member query interval : 100

This is an example of output from the show ip igmp snooping command. It displays snooping characteristics for all VLANs on the switch.

Switch> show ip igmp snooping 
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping              : Enabled
IGMPv3 snooping (minimal)  : Enabled
Report suppression         : Enabled
TCN solicit query          : Disabled
TCN flood query count      : 2
Last member query interval : 100

Vlan 1:
--------
IGMP snooping                       :Enabled
Immediate leave                     :Disabled
Multicast router learning mode      :pim-dvmrp
Source only learning age timer      :10
CGMP interoperability mode          :IGMP_ONLY
Last member query interval          : 100

Vlan 2:
--------
IGMP snooping                       :Enabled
Immediate leave                     :Disabled
Multicast router learning mode      :pim-dvmrp
Source only learning age timer      :10
CGMP interoperability mode          :IGMP_ONLY
Last member query interval          : 333

<output truncated>

Related Commands

Command
Description

ip igmp snooping

Enables IGMP snooping on the switch or on a VLAN.

ip igmp snooping last-member-query-interval

Enables the IGMP snooping configurable-leave timer.

ip igmp snooping querier

Enables the IGMP querier function in Layer 2 networks.

ip igmp snooping report-suppression

Enables IGMP report suppression.

ip igmp snooping tcn

Configures the IGMP topology change notification behavior.

ip igmp snooping tcn flood

Specifies multicast flooding as the IGMP spanning-tree topology change notification behavior.

ip igmp snooping vlan immediate-leave

Enables IGMP snooping immediate-leave processing on a VLAN.

ip igmp snooping vlan mrouter

Adds a multicast router port or configures the multicast learning method.

ip igmp snooping vlan static

Statically adds a Layer 2 port as a member of a multicast group.

show ip igmp snooping groups

Displays the IGMP snooping multicast table for the switch.

show ip igmp snooping mrouter

Displays IGMP snooping multicast router ports for the switch or for the specified multicast VLAN.

show ip igmp snooping querier

Displays the configuration and operation information for the IGMP querier configured on a switch.


show ip igmp snooping groups

Use the show ip igmp snooping groups privileged EXEC command to display the Internet Group Management Protocol (IGMP) snooping multicast table for the switch or the multicast information. Use with the vlan keyword to display the multicast table for a specified multicast VLAN or specific multicast information.

show ip igmp snooping groups [count | dynamic [count] | user [count]] [ | {begin | exclude | include} expression]

show ip igmp snooping groups vlan vlan-id [ip_address | count | dynamic [count] | user [count]] [ | {begin | exclude | include} expression]

Syntax Description

count

(Optional) Display the total number of entries for the specified command

options instead of the actual entries.

dynamic

(Optional) Display entries learned by IGMP snooping.

user

Optional) Display only the user-configured multicast entries.

ip_address

(Optional) Display characteristics of the multicast group with the specified group IP address.

vlan vlan-id

(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use this command to display multicast information or the multicast table.

VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP snooping.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show ip igmp snooping groups command without any keywords. It displays the multicast table for the switch.

Switch# show ip igmp snooping groups
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi0/1, Gi0/2
104       224.1.4.3      igmp        v2          Gi0/1, Gi0/2

This is an example of output from the show ip igmp snooping groups count command. It displays the total number of multicast groups on the switch.

Switch# show ip igmp snooping groups count
Total number of multicast groups: 2

This is an example of output from the show ip igmp snooping groups dynamic command. It shows only the entries learned by IGMP snooping.

Switch# show ip igmp snooping groups vlan 1 dynamic
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi0/1, Fa0/15
104       224.1.4.3      igmp        v2          Gi0/1, Fa0/15

This is an example of output from the show ip igmp snooping groups vlan vlan-id ip-address command. It shows the entries for the group with the specified IP address.

Switch# show ip igmp snooping groups vlan 104 224.1.4.2
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi0/1, Fa0/15

Related Commands

Command
Description

ip igmp snooping

Enables IGMP snooping on the switch or on a VLAN.

ip igmp snooping vlan mrouter

Configures a multicast router port.

ip igmp snooping vlan static

Statically adds a Layer 2 port as a member of a multicast group.

show ip igmp snooping

Displays the IGMP snooping configuration of the switch or the VLAN.

show ip igmp snooping mrouter

Displays IGMP snooping multicast router ports for the switch or for the specified multicast VLAN.


show ip igmp snooping mrouter

Use the show ip igmp snooping mrouter privileged EXEC command to display the Internet Group Management Protocol (IGMP) snooping dynamically learned and manually configured multicast router ports for the switch or for the specified multicast VLAN.

show ip igmp snooping mrouter [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

vlan vlan-id

(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use this command to display multicast router ports on the switch or for a specific VLAN.

VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP snooping.

When multicast VLAN registration (MVR) is enabled, the show ip igmp snooping mrouter command displays MVR multicast router information and IGMP snooping information.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show ip igmp snooping mrouter command. It shows how to display multicast router ports on the switch.

Switch# show ip igmp snooping mrouter
Vlan    ports
----    -----
   1    Gi0/1(dynamic)

Related Commands

Command
Description

ip igmp snooping

Enables IGMP snooping on the switch or on a VLAN.

ip igmp snooping vlan mrouter

Adds a multicast router port.

ip igmp snooping vlan static

Statically adds a Layer 2 port as a member of a multicast group.

show ip igmp snooping

Displays the IGMP snooping configuration of the switch or the VLAN

show ip igmp snooping groups

Displays IGMP snooping multicast information for the switch or for the specified parameter.


show ip igmp snooping querier

Use the show ip igmp snooping querier detail user EXEC command to display the configuration and operation information for the IGMP querier configured on a switch.

show ip igmp snooping querier [detail | vlan vlan-id [detail]] [ | {begin | exclude | include} expression]

Syntax Description

detail

Optional) Display detailed IGMP querier information.

vlan vlan-id [detail]

Optional) Display IGMP querier information for the specified VLAN. The range is 1 to 1001 and 1006 to 4094. Use the detail keyword to display detailed information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use the show ip igmp snooping querier command to display the IGMP version and the IP address of a detected device, also called a querier, that sends IGMP query messages. A subnet can have multiple multicast routers but has only one IGMP querier. In a subnet running IGMPv2, one of the multicast routers is elected as the querier. The querier can be a Layer 3 switch.

The show ip igmp snooping querier command output also shows the VLAN and the interface on which the querier was detected. If the querier is the switch, the output shows the Port field as Router. If the querier is a router, the output shows the port number on which the querier is learned in the Port field.

The show ip igmp snooping querier detail user EXEC command is similar to the show ip igmp snooping querier command. However, the show ip igmp snooping querier command displays only the device IP address most recently detected by the switch querier.

The show ip igmp snooping querier detail command displays the device IP address most recently detected by the switch querier and this additional information:

The elected IGMP querier in the VLAN

The configuration and operational information pertaining to the switch querier (if any) that is configured in the VLAN

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show ip igmp snooping querier command:

Switch> show ip igmp snooping querier
Vlan      IP Address     IGMP Version        Port
---------------------------------------------------
1         172.20.50.11   v3                  Gi0/1
2         172.20.40.20   v2                  Router

This is an example of output from the show ip igmp snooping querier detail command:

Switch> show ip igmp snooping querier detail

Vlan      IP Address     IGMP Version   Port
-------------------------------------------------------------
1         1.1.1.1        v2             Fa0/1 

Global IGMP switch querier status
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 0.0.0.0        
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10

Vlan 1:   IGMP switch querier status

--------------------------------------------------------
elected querier is 1.1.1.1         on port Fa0/1
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 10.1.1.65      
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10
operational state              : Non-Querier
operational version            : 2
tcn query pending count        : 0

Related Commands

Command
Description

ip igmp snooping

Enables IGMP snooping on the switch or on a VLAN.

ip igmp snooping querier

Enables the IGMP querier function in Layer 2 networks.

show ip igmp snooping

Displays IGMP snooping multicast router ports for the switch or for the specified multicast VLAN.


show lacp

Use the show lacp user EXEC command to display Link Aggregation Control Protocol (LACP) channel-group information.

show lacp [channel-group-number] {counters | internal | neighbor | sys-id} [ | {begin | exclude | include} expression]

Syntax Description

channel-group-number

(Optional) Number of the channel group. The range is 1 to 6.

counters

Display traffic information.

internal

Display internal information.

neighbor

Display neighbor information.

sys-id

Display the system identifier that is being used by LACP. The system identifier is made up of the LACP system priority and the switch MAC address.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

You can enter any show lacp command to display the active channel-group information. To display specific channel information, enter the show lacp command with a channel-group number.

If you do not specify a channel group, information for all channel groups appears.

You can enter the channel-group-number option to specify a channel group for all keywords except sys-id.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show lacp counters user EXEC command. Table 2-12 describes the fields in the display.

Switch> show lacp counters
               LACPDUs         Marker      Marker Response    LACPDUs
Port         Sent   Recv     Sent   Recv     Sent   Recv      Pkts Err
---------------------------------------------------------------------
Channel group:1
Gi0/1        19     10       0      0        0      0         0     
Gi0/2        14     6        0      0        0      0         0     

Table 2-12 show lacp counters Field Descriptions 

Field
Description

LACPDUs Sent and Recv

The number of LACP packets sent and received by a port.

Marker Sent and Recv

The number of LACP marker packets sent and received by a port.

Marker Response Sent and Recv

The number of LACP marker response packets sent and received by a port.

LACPDUs Pkts and Err

The number of unknown and illegal packets received by LACP for a port.


This is an example of output from the show lacp internal command:

Switch> show lacp 1 internal 
Flags:  S - Device is requesting Slow LACPDUs
        F - Device is requesting Fast LACPDUs
        A - Device is in Active mode       P - Device is in Passive mode 

Channel group 1
                              LACP port     Admin     Oper    Port     Port
Port        Flags   State     Priority      Key       Key     Number   State
Gi0/1       SA      bndl      32768         0x3       0x3     0x4      0x3D  
Gi0/2       SA      bndl      32768         0x3       0x3     0x5      0x3D  

Table 2-13 describes the fields in the display:

Table 2-13 show lacp internal Field Descriptions 

Field
Description

State

State of the specific port. These are the allowed values:

- —Port is in an unknown state.

bndl—Port is attached to an aggregator and bundled with other ports.

susp—Port is in a suspended state; it is not attached to any aggregator.

hot-sby—Port is in a hot-standby state.

indiv—Port is incapable of bundling with any other port.

indep—Port is in an independent state (not bundled but able to switch data traffic. In this case, LACP is not running on the partner port).

down—Port is down.

LACP Port Priority

Port priority setting. LACP uses the port priority to put ports s in standby mode when there is a hardware limitation that prevents all compatible ports from aggregating.

Admin Key

Administrative key assigned to this port. LACP automatically generates an administrative key value as a hexadecimal number. The administrative key defines the ability of a port to aggregate with other ports. A port's ability to aggregate with other ports is determined by the port physical characteristics (for example, data rate and duplex capability) and configuration restrictions that you establish.

Oper Key

Runtime operational key that is being used by this port. LACP automatically generates this value as a hexadecimal number.

Port Number

Port number.

Port State

State variables for the port, encoded as individual bits within a single octet with these meanings:

bit0: LACP_Activity

bit1: LACP_Timeout

bit2: Aggregation

bit3: Synchronization

bit4: Collecting

bit5: Distributing

bit6: Defaulted

bit7: Expired

Note In the list above, bit7 is the MSB and bit0 is the LSB.


This is an example of output from the show lacp neighbor command:

Switch> show lacp neighbor 
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     

Channel group 3 neighbors

Partner's information:

          Partner               Partner                     Partner
Port      System ID             Port Number     Age         Flags
Gi0/1     32768,0007.eb49.5e80  0xC              19s        SP

          LACP Partner         Partner         Partner
          Port Priority        Oper Key        Port State
          32768                0x3             0x3C

Partner's information:

          Partner               Partner                     Partner
Port      System ID             Port Number     Age         Flags
Gi0/2     32768,0007.eb49.5e80  0xD              15s        SP

          LACP Partner         Partner         Partner
          Port Priority        Oper Key        Port State
          32768                0x3             0x3C

This is an example of output from the show lacp sys-id command:

Switch> show lacp sys-id 
32765,0002.4b29.3a00

The system identification is made up of the system priority and the system MAC address. The first two bytes are the system priority, and the last six bytes are the globally administered individual MAC address associated to the system.

Related Commands

Command
Description

clear lacp

Clears the LACP channel-group information.

lacp port-priority

Configures the LACP port priority.

lacp system-priority

Configures the LACP system priority.


show mac address-table

Use the show mac address-table user EXEC command to display a specific MAC address table static and dynamic entry or the MAC address table static and dynamic entries on a specific interface or VLAN.

show mac address-table [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table command:

Switch> show mac address-table
          Mac Address Table
------------------------------------------
Vlan    Mac Address       Type       Ports
----    -----------       ----       -----
 All    0000.0000.0001    STATIC     CPU
 All    0000.0000.0002    STATIC     CPU
 All    0000.0000.0003    STATIC     CPU
 All    0000.0000.0009    STATIC     CPU
 All    0000.0000.0012    STATIC     CPU
 All    0180.c200.000b    STATIC     CPU
 All    0180.c200.000c    STATIC     CPU
 All    0180.c200.000d    STATIC     CPU
 All    0180.c200.000e    STATIC     CPU
 All    0180.c200.000f    STATIC     CPU
 All    0180.c200.0010    STATIC     CPU
   1    0030.9441.6327    DYNAMIC    Gi0/4
Total Mac Addresses for this criterion: 12

Related Commands

Command
Description

clear mac address-table dynamic

Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table address

Use the show mac address-table address user EXEC command to display MAC address table information for the specified MAC address.

show mac address-table address mac-address [interface interface-id] [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

mac-address

Specify the 48-bit MAC address; the valid format is H.H.H.

interface interface-id

(Optional) Display information for a specific interface. Valid interfaces include physical ports and port channels.

vlan vlan-id

(Optional) Display entries for the specific VLAN only. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table address command:

Switch# show mac address-table address 0002.4b28.c482
          Mac Address Table
------------------------------------------

Vlan    Mac Address     Type    Ports
----    -----------     ----    -----
 All    0002.4b28.c482  STATIC  CPU
Total Mac Addresses for this criterion: 1 

Related Commands

Command
Description

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table aging-time

Use the show mac address-table aging-time user EXEC command to display the aging time of a specific address table instance, all address table instances on a specified VLAN or, if a specific VLAN is not specified, on all VLANs.

show mac address-table aging-time [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

vlan vlan-id

(Optional) Display aging time information for a specific VLAN. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If no VLAN number is specified, the aging time for all VLANs appears.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table aging-time command:

Switch> show mac address-table aging-time
Vlan    Aging Time
----    ----------
   1     300 

This is an example of output from the show mac address-table aging-time vlan 10 command:

Switch> show mac address-table aging-time vlan 10
Vlan    Aging Time
----    ----------
  10     300 

Related Commands

Command
Description

mac address-table aging-time

Sets the length of time that a dynamic entry remains in the MAC address table after the entry is used or updated.

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table count

Use the show mac address-table count user EXEC command to display the number of addresses present in all VLANs or the specified VLAN.

show mac address-table count [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

vlan vlan-id

(Optional) Display the number of addresses for a specific VLAN. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If no VLAN number is specified, the address count for all VLANs appears.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table count command:

Switch# show mac address-table count
Mac Entries for Vlan   : 1
---------------------------
Dynamic Address Count  : 2
Static  Address Count  : 0
Total Mac Addresses    : 2 

Related Commands

Command
Description

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table dynamic

Use the show mac address-table dynamic user EXEC command to display only dynamic MAC address table entries.

show mac address-table dynamic [address mac-address] [interface interface-id] [vlan vlan-id]
[ | {
begin | exclude | include} expression]

Syntax Description

address mac-address

(Optional) Specify a 48-bit MAC address; the valid format is H.H.H (available in privileged EXEC mode only).

interface interface-id

(Optional) Specify an interface to match; valid interfaces include physical ports and port channels.

vlan vlan-id

(Optional) Display entries for a specific VLAN; the range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table dynamic command:

Switch> show mac address-table dynamic
          Mac Address Table
------------------------------------------

Vlan    Mac Address     Type    Ports
----    -----------     ----    -----
   1    0030.b635.7862  DYNAMIC Gi0/2
   1    00b0.6496.2741  DYNAMIC Gi0/2
Total Mac Addresses for this criterion: 2 

Related Commands

Command
Description

clear mac address-table dynamic

Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN.

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table interface

Use the show mac address-table interface user command to display the MAC address table information for the specified interface in the specified VLAN.

show mac address-table interface interface-id [vlan vlan-id] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

Specify an interface type; valid interfaces include physical ports and port channels.

vlan vlan-id

(Optional) Display entries for a specific VLAN; the range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table interface command:

Switch> show mac address-table interface gigabitethernet0/2
          Mac Address Table
------------------------------------------

Vlan    Mac Address     Type    Ports
----    -----------     ----    -----
   1    0030.b635.7862  DYNAMIC Gi0/2
   1    00b0.6496.2741  DYNAMIC Gi0/2
Total Mac Addresses for this criterion: 2 

Related Commands

Command
Description

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table notification

Use the show mac address-table notification user EXEC command to display the MAC address notification settings for all interfaces or the specified interface.

show mac address-table notification [interface [interface-id]] [ | {begin | exclude | include} expression]

Syntax Description

interface

(Optional) Display information for all interfaces. Valid interfaces include physical ports and port channels.

interface-id

(Optional) Display information for the specified interface. Valid interfaces include physical ports and port channels.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Use the show mac address-table notification command without any keywords to display whether the feature is enabled or disabled, the MAC notification interval, the maximum number of entries allowed in the history table, and the history table contents.

Use the interface keyword to display the flags for all interfaces. If the interface-id is included, only the flags for that interface appear.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table notification command:

Switch> show mac address-table notification
MAC Notification Feature is Enabled on the switch
Interval between Notification Traps : 60 secs
Number of MAC Addresses Added : 4
Number of MAC Addresses Removed : 4
Number of Notifications sent to NMS : 3
Maximum Number of entries configured in History Table : 100
Current History Table Length : 3
MAC Notification Traps are Enabled
History Table contents
----------------------
History Index 0, Entry Timestamp 1032254, Despatch Timestamp 1032254
MAC Changed Message :
Operation: Added   Vlan: 2     MAC Addr: 0000.0000.0001 Module: 0   Port: 1

History Index 1, Entry Timestamp 1038254, Despatch Timestamp 1038254
MAC Changed Message :
Operation: Added   Vlan: 2     MAC Addr: 0000.0000.0000 Module: 0   Port: 1
Operation: Added   Vlan: 2     MAC Addr: 0000.0000.0002 Module: 0   Port: 1
Operation: Added   Vlan: 2     MAC Addr: 0000.0000.0003 Module: 0   Port: 1

History Index 2, Entry Timestamp 1074254, Despatch Timestamp 1074254
MAC Changed Message :
Operation: Deleted Vlan: 2     MAC Addr: 0000.0000.0000 Module: 0   Port: 1
Operation: Deleted Vlan: 2     MAC Addr: 0000.0000.0001 Module: 0   Port: 1
Operation: Deleted Vlan: 2     MAC Addr: 0000.0000.0002 Module: 0   Port: 1
Operation: Deleted Vlan: 2     MAC Addr: 0000.0000.0003 Module: 0   Port: 1

Related Commands

Command
Description

clear mac address-table notification

Clears the MAC address notification global counters.

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table static

Displays static MAC address table entries only.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table static

Use the show mac address-table static user EXEC command to display only static MAC address table entries.

show mac address-table static [address mac-address] [interface interface-id] [vlan vlan-id]
[ | {begin | exclude | include} expression]

Syntax Description

address mac-address

(Optional) Specify a 48-bit MAC address; the valid format is H.H.H (available in privileged EXEC mode only).

interface interface-id

(Optional) Specify an interface to match; valid interfaces include physical ports and port channels.

vlan vlan-id

(Optional) Display addresses for a specific VLAN. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table static command:

Switch> show mac address-table static
          Mac Address Table
------------------------------------------

Vlan    Mac Address     Type    Ports
----    -----------     ----    -----
 All    0100.0ccc.cccc  STATIC  CPU
 All    0180.c200.0000  STATIC  CPU
 All    0100.0ccc.cccd  STATIC  CPU
 All    0180.c200.0001  STATIC  CPU
 All    0180.c200.0004  STATIC  CPU
 All    0180.c200.0005  STATIC  CPU
   4    0001.0002.0004  STATIC  Drop
   6    0001.0002.0007  STATIC  Drop
Total Mac Addresses for this criterion: 8 

Related Commands

Command
Description

mac address-table static

Adds static addresses to the MAC address table.

mac address-table static drop

Enables unicast MAC address filtering and configures the switch to drop traffic with a specific source or destination MAC address.

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table vlan

Displays the MAC address table information for the specified VLAN.


show mac address-table vlan

Use the show mac address-table vlan user EXEC command to display the MAC address table information for the specified VLAN.

show mac address-table vlan vlan-id [ | {begin | exclude | include} expression]

Syntax Description

vlan-id

(Optional) Display addresses for a specific VLAN. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mac address-table vlan 1 command:

Switch> show mac address-table vlan 1
          Mac Address Table
------------------------------------------

Vlan    Mac Address     Type    Ports
----    -----------     ----    -----
   1    0100.0ccc.cccc  STATIC  CPU
   1    0180.c200.0000  STATIC  CPU
   1    0100.0ccc.cccd  STATIC  CPU
   1    0180.c200.0001  STATIC  CPU
   1    0180.c200.0002  STATIC  CPU
   1    0180.c200.0003  STATIC  CPU
   1    0180.c200.0005  STATIC  CPU
   1    0180.c200.0006  STATIC  CPU
   1    0180.c200.0007  STATIC  CPU
Total Mac Addresses for this criterion: 9 

Related Commands

Command
Description

show mac address-table address

Displays MAC address table information for the specified MAC address.

show mac address-table aging-time

Displays the aging time in all VLANs or the specified VLAN.

show mac address-table count

Displays the number of addresses present in all VLANs or the specified VLAN.

show mac address-table dynamic

Displays dynamic MAC address table entries only.

show mac address-table interface

Displays the MAC address table information for the specified interface.

show mac address-table notification

Displays the MAC address notification settings for all interfaces or the specified interface.

show mac address-table static

Displays static MAC address table entries only.


show mls qos

Use the show mls qos user EXEC command to display global quality of service (QoS) configuration information.

show mls qos [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mls qos command when QoS is enabled and DSCP transparency is enabled:

Switch> show mls qos
QoS is enabled
QoS ip packet dscp rewrite is enabled

Related Commands

Command
Description

mls qos

Enables QoS for the entire switch.


show mls qos input-queue

Use the show mls qos input-queue user EXEC command to display quality of service (QoS) settings for the ingress queues.

show mls qos input-queue [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mls qos input-queue command:

Switch> show mls qos input-queue
Queue     :      1      2
----------------------------------------------
buffers   :      90     10
bandwidth :      4      4
priority  :      0      10
threshold1:      100    100
threshold2:      100    100

Related Commands

Command
Description

mls qos srr-queue input cos-map

Maps assigned class of service (CoS) values to an ingress queue and assigns CoS values to a queue and to a threshold ID.

mls qos srr-queue input priority-queue

Configures the ingress priority queue and guarantees bandwidth.


show mls qos interface

Use the show mls qos interface user EXEC command to display quality of service (QoS) information at the port level.

show mls qos interface [interface-id] [buffers | queueing | statistics]
[ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) Display QoS information for the specified port. Valid interfaces include physical ports.

buffers

(Optional) Display the buffer allocation among the queues.

queueing

(Optional) Display the queueing strategy (shared or shaped) and the weights corresponding to the queues.

statistics

(Optional) Display statistics for sent and received Differentiated Services Code Points (DSCPs) and class of service (CoS) values, the number of packets enqueued or dropped per egress queue.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.



Note Though visible in the command-line help string, the policers keyword is not supported.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show mls qos interface interface-id command when VLAN-based QoS is enabled:

Switch> show mls qos interface gigabitethernet0/1
GigabitEthernet0/1
trust state:not trusted
trust mode:not trusted
trust enabled flag:ena
COS override:dis
default COS:0
DSCP Mutation Map:Default DSCP Mutation Map
Trust device:none
qos mode:vlan-based

This is an example of output from the show mls qos interface interface-id command when VLAN-based QoS is disabled:

Switch> show mls qos interface gigabitethernet0/2
GigabitEthernet0/2
trust state:not trusted
trust mode:not trusted
trust enabled flag:ena
COS override:dis
default COS:0
DSCP Mutation Map:Default DSCP Mutation Map
Trust device:none
qos mode:port-based

This is an example of output from the show mls qos interface interface-id buffers command:

Switch> show mls qos interface gigabitethernet0/2 buffers
GigabitEthernet0/2
The port is mapped to qset : 1
The allocations between the queues are : 25 25 25 25

This is an example of output from the show mls qos interface interface-id queueing command. The egress expedite queue overrides the configured shaped round robin (SRR) weights.

Switch> show mls qos interface gigabitethernet0/2 queueing
GigabitEthernet0/2
Egress Priority Queue :enabled
Shaped queue weights (absolute) :  25 0 0 0
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

This is an example of output from the show mls qos interface interface-id statistics command. Table 2-14 describes the fields in this display.

Switch> show mls qos interface gigabitethernet0/2 statistics
GigabitEthernet0/2

  dscp: incoming
-------------------------------

  0 -  4 :      4213          0          0          0          0
  5 -  9 :         0          0          0          0          0
 10 - 14 :         0          0          0          0          0
 15 - 19 :         0          0          0          0          0
 20 - 24 :         0          0          0          0          0
 25 - 29 :         0          0          0          0          0
 30 - 34 :         0          0          0          0          0
 35 - 39 :         0          0          0          0          0
 40 - 44 :         0          0          0          0          0
 45 - 49 :         0          0          0          6          0
 50 - 54 :         0          0          0          0          0
 55 - 59 :         0          0          0          0          0
 60 - 64 :         0          0          0          0
  dscp: outgoing
-------------------------------

  0 -  4 :    363949          0          0          0          0
  5 -  9 :         0          0          0          0          0
 10 - 14 :         0          0          0          0          0
 15 - 19 :         0          0          0          0          0
 20 - 24 :         0          0          0          0          0
 25 - 29 :         0          0          0          0          0
 30 - 34 :         0          0          0          0          0
 35 - 39 :         0          0          0          0          0
 40 - 44 :         0          0          0          0          0
 45 - 49 :         0          0          0          0          0
 50 - 54 :         0          0          0          0          0
 55 - 59 :         0          0          0          0          0
 60 - 64 :         0          0          0          0
  cos: incoming
-------------------------------

  0 -  4 :    132067          0          0          0          0
  5 -  9 :         0          0          0
  cos: outgoing
-------------------------------

  0 -  4 :    739155          0          0          0          0
  5 -  9 :        90          0          0

Table 2-14 show mls qos interface statistics Field Descriptions 

Field
 
Description

DSCP

incoming

Number of packets received for each DSCP value.

outgoing

Number of packets sent for each DSCP value.

CoS

incoming

Number of packets received for each CoS value.

outgoing

Number of packets sent for each CoS value.


Related Commands

Command
Description

mls qos srr-queue input cos-map

Maps CoS values to an ingress queue or maps CoS values to a queue and to a threshold ID.

mls qos srr-queue input priority-queue

Configures the ingress priority queue and guarantees bandwidth.

mls qos srr-queue output cos-map

Maps CoS values to an egress queue or maps CoS values to a queue and to a threshold ID.

priority-queue

Enables the egress expedite queue on a port.


show mls qos maps

Use the show mls qos maps user EXEC command to display quality of service (QoS) mapping information. During classification, QoS uses the mapping tables to represent the priority of the traffic and to derive a corresponding class of service (CoS) value from the received CoS or IP precedence value.

show mls qos maps [ cos-input-q | cos-output-q | ip-prec-dscp ] [ | {begin | exclude | include} expression]

Syntax Description

cos-input-q

(Optional) Display the CoS input queue threshold map.

cos-output-q

(Optional) Display the CoS output queue threshold map.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

The CoS input queue threshold and the CoS output queue threshold maps show the CoS value in the top row and the corresponding queue ID and threshold ID in the second row. For example, in the CoS input queue threshold map, a CoS value of 5 corresponds to queue 2 and threshold 1 (2-1).

Examples

This is an example of output from the show mls qos maps command:

Switch> show mls qos maps

Cos-outputq-threshold map:
              cos:  0   1   2   3   4   5   6   7
              ------------------------------------
  queue-threshold: 2-1 2-1 3-1 3-1 4-1 1-1 4-1 4-1

   Cos-inputq-threshold map:
              cos:  0   1   2   3   4   5   6   7
              ------------------------------------
  queue-threshold: 1-1 1-1 1-1 1-1 1-1 2-1 1-1 1-1

Related Commands

Command
Description

mls qos srr-queue input cos-map

Maps CoS values to an ingress queue or maps CoS values to a queue and to a threshold ID.

mls qos srr-queue output cos-map

Maps CoS values to an egress queue or maps CoS values to a queue and to a threshold ID.


show monitor

Use the show monitor user EXEC command to display information about all Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) sessions on the switch. Use the command with keywords to show a specific session, all sessions, all local sessions, or all remote sessions.

show monitor [session {session_number | all | local | range list | remote} [detail]] [ | {begin | exclude | include} expression]

Syntax Description

session

(Optional) Display information about specified SPAN sessions.

session_number

Specify the number of the SPAN or RSPAN session. The range is 1 to 66.

all

Display all SPAN sessions.

local

Display only local SPAN sessions.

range list

Display a range of SPAN sessions, where list is the range of valid sessions, either a single session or a range of sessions described by two numbers, the lower one first, separated by a hyphen. Do not enter any spaces between comma-separated parameters or in hyphen-specified ranges.

Note This keyword is available only in privileged EXEC mode.

remote

Display only remote SPAN sessions.

detail

(Optional) Display detailed information about the specified sessions.

| begin

Display begins with the line that matches the expression.

| exclude

Display excludes lines that match the expression.

| include

Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

The output is the same for the show monitor command and the show monitor session all command.

Examples

This is an example of output for the show monitor user EXEC command:

Switch# show monitor
Session 1
---------
Type : Local Session
Source Ports :
RX Only : Gi0/1
Both : Gi0/2-3,Gi0/5-6
Destination Ports : Gi0/20
Encapsulation : Replicate
Ingress : Disabled

Session 2
---------
Type : Remote Source Session
Source VLANs :
TX Only : 10
Both : 1-9
Dest RSPAN VLAN : 105

This is an example of output for the show monitor user EXEC command for local SPAN source session 1:

Switch# show monitor session 1
Session 1
---------
Type : Local Session
Source Ports :
RX Only : Gi0/1
Both : Gi0/2-3,Gi0/5-6
Destination Ports : Gi0/20
Encapsulation : Replicate
Ingress : Disabled

This is an example of output for the show monitor session all user EXEC command when ingress traffic forwarding is enabled:

Switch# show monitor session all
Session 1
---------
Type : Local Session
Source Ports :
Both : Gi0/2
Destination Ports : Gi0/3
Encapsulation : Native
Ingress : Enabled, default VLAN = 5
Ingress encap : DOT1Q

Session 2
---------
Type : Local Session
Source Ports :
Both : Gi0/8
Destination Ports : Gi0/12
Encapsulation : Replicate
Ingress : Enabled, default VLAN = 4
Ingress encap : Untagged

Related Commands

Command
Description

monitor session

Starts or modifies a SPAN or RSPAN session.


show pagp

Use the show pagp user EXEC command to display Port Aggregation Protocol (PAgP) channel-group information.

show pagp [channel-group-number] {counters | internal | neighbor} [ | {begin | exclude | include} expression]]

Syntax Description

channel-group-number

(Optional) Number of the channel group. The range is 1 to 6.

counters

Display traffic information.

internal

Display internal information.

neighbor

Display neighbor information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

You can enter any show pagp command to display the active channel-group information. To display the nonactive information, enter the show pagp command with a channel-group number.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output are appear.

Examples

This is an example of output from the show pagp 1 counters command:

Switch> show pagp 1 counters
             Information        Flush
Port         Sent   Recv     Sent   Recv
--------------------------------------
Channel group: 1
  Gi0/1      45     42       0      0 
  Gi0/2      45     41       0      0 

This is an example of output from the show pagp 1 internal command:

Switch> show pagp 1 internal
Flags:  S - Device is sending Slow hello.  C - Device is in Consistent state.
        A - Device is in Auto mode.
Timers: H - Hello timer is running.        Q - Quit timer is running.
        S - Switching timer is running.    I - Interface timer is running.

Channel group 1
                                  Hello    Partner  PAgP     Learning  Group
Port        Flags State   Timers  Interval Count   Priority   Method  Ifindex
Gi0/1       SC    U6/S7   H       30s      1        128        Any      16
Gi0/2       SC    U6/S7   H       30s      1        128        Any      16

This is an example of output from the show pagp 1 neighbor command:

Switch> show pagp 1 neighbor
Flags:  S - Device is sending Slow hello.  C - Device is in Consistent state.
        A - Device is in Auto mode.        P - Device learns on physical port.

Channel group 1 neighbors
            Partner              Partner          Partner           Partner Group
Port        Name                 Device ID        Port         Age  Flags   Cap.
Gi0/1       switch-p2            0002.4b29.4600   Gi0/1          9s SC      10001 
Gi0/2       switch-p2            0002.4b29.4600   Gi0/2         24s SC      10001 

Related Commands

Command
Description

clear pagp

Clears PAgP channel-group information.


show parser macro

Use the show parser macro user EXEC command to display the parameters for all configured macros or for one macro on the switch.

show parser macro [{brief | description [interface interface-id] | name macro-name}] | {begin | exclude | include} expression]

Syntax Description

brief

(Optional) Display the name of each macro.

description [interface interface-id]

(Optional) Display all macro descriptions or the description of a specific interface.

name macro-name

(Optional) Display information about a single macro identified by the macro name.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is a partial output example from the show parser macro command. The output for the Cisco-default macros varies depending on the switch platform and the software image running on the switch:

Switch# show parser macro
Total number of macros = 6
--------------------------------------------------------------
Macro name : cisco-global
Macro type : default global
# Enable dynamic port error recovery for link state
# failures
errdisable recovery cause link-flap
errdisable recovery interval 60

<output truncated>

--------------------------------------------------------------
Macro name : cisco-desktop
Macro type : default interface
# macro keywords $AVID
# Basic interface - Enable data VLAN only
# Recommended value for access vlan (AVID) should not be 1
switchport access vlan $AVID
switchport mode access

<output truncated>

--------------------------------------------------------------
Macro name : cisco-phone
Macro type : default interface
# Cisco IP phone + desktop template
# macro keywords $AVID $VVID
# VoIP enabled interface - Enable data VLAN
# and voice VLAN (VVID)
# Recommended value for access vlan (AVID) should not be 1
switchport access vlan $AVID
switchport mode access

<output truncated>

--------------------------------------------------------------
Macro name : cisco-switch
Macro type : default interface
# macro keywords $NVID
# Access Uplink to Distribution
# Do not apply to EtherChannel/Port Group
# Define unique Native VLAN on trunk ports
# Recommended value for native vlan (NVID) should not be 1
switchport trunk native vlan $NVID

<output truncated>

--------------------------------------------------------------
Macro name : cisco-router
Macro type : default interface
# macro keywords $NVID
# Access Uplink to Distribution
# Define unique Native VLAN on trunk ports
# Recommended value for native vlan (NVID) should not be 1
switchport trunk native vlan $NVID

<output truncated>

--------------------------------------------------------------
Macro name : snmp
Macro type : customizable

#enable port security, linkup, and linkdown traps
snmp-server enable traps port-security
snmp-server enable traps linkup
snmp-server enable traps linkdown
#set snmp-server host
snmp-server host ADDRESS
#set SNMP trap notifications precedence
snmp-server ip precedence VALUE

--------------------------------------------------------------

This is an example of output from the show parser macro name command:

Switch# show parser macro name standard-switch10
Macro name : standard-switch10
Macro type : customizable
macro description standard-switch10
# Trust QoS settings on VOIP packets
auto qos voip trust
# Allow port channels to be automatically formed
channel-protocol pagp

This is an example of output from the show parser macro brief command:

Switch# show parser macro brief
    default global   : cisco-global
    default interface: cisco-desktop
    default interface: cisco-phone
    default interface: cisco-switch
    default interface: cisco-router
    customizable     : snmp

This is an example of output from the show parser description command:

Switch# show parser macro description 
Global Macro(s): cisco-global
Interface    Macro Description(s)
--------------------------------------------------------------
Gi0/1        standard-switch10
Gi0/2       this is test macro
--------------------------------------------------------------

This is an example of output from the show parser description interface command:

Switch# show parser macro description interface gigabitethernet0/2
Interface    Macro Description
--------------------------------------------------------------
Gi0/2      this is test macro
--------------------------------------------------------------

Related Commands

Command
Description

macro apply

Applies a macro on an interface or applies and traces a macro on an interface.

macro description

Adds a description about the macros that are applied to an interface.

macro global

Applies a macro on a switch or applies and traces a macro on a switch.

macro global description

Adds a description about the macros that are applied to the switch.

macro name

Creates a macro.

show running-config

Displays the current operating configuration, including defined macros. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.


show port-security

Use the show port-security privileged EXEC command to display port-security settings for an interface or for the switch.

show port-security [interface interface-id] [address | vlan] [ | {begin | exclude | include} expression]

Syntax Description

interface interface-id

(Optional) Display port security settings for the specified interface. Valid interfaces include physical ports (including type, module, and port number).

address

(Optional) Display all secure MAC addresses on all ports or a specified port.

vlan

(Optional) Display port security settings for all VLANs on the specified interface. This keyword is visible only on interfaces that have the switchport mode set to trunk.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you enter the command without keywords, the output includes the administrative and operational status of all secure ports on the switch.

If you enter an interface-id, the command displays port security settings for the interface.

If you enter the address keyword, the command displays the secure MAC addresses for all interfaces and the aging information for each secure address.

If you enter an interface-id and the address keyword, the command displays all the MAC addresses for the interface with aging information for each secure address. You can also use this command to display all the MAC addresses for an interface even if you have not enabled port security on it.

If you enter the vlan keyword, the command displays the configured maximum and the current number of secure MAC addresses for all VLANs on the interface. This option is visible only on interfaces that have the switchport mode set to trunk.

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of the output from the show port-security command:

Switch# show port-security
Secure Port      MaxSecureAddr  CurrentAddr  SecurityViolation  Security Action
                    (Count)        (Count)      (Count)
-------------------------------------------------------------------------------
     Gi0/1         1               0             0            Shutdown
-------------------------------------------------------------------------------
Total Addresses in System (excluding one mac per port)     : 1
Max Addresses limit in System (excluding one mac per port) : 6272

This is an example of output from the show port-security interface interface-id command:

Switch# show port-security interface gigabitethernet0/1
Port Security : Enabled
Port status : SecureUp
Violation mode : Shutdown
Maximum MAC Addresses : 1
Total MAC Addresses : 0
Configured MAC Addresses : 0
Aging time : 0 mins
Aging type : Absolute
SecureStatic address aging : Disabled
Security Violation count : 0

This is an example of output from the show port-security address command:

Switch# show port-security address

Secure Mac Address Table
-------------------------------------------------------------------
Vlan    Mac Address       Type                Ports   Remaining Age
                                                         (mins)
----    -----------       ----                -----   -------------
   1    0006.0700.0800    SecureConfigured    Gi0/2       1
-------------------------------------------------------------------
Total Addresses in System (excluding one mac per port)     : 1
Max Addresses limit in System (excluding one mac per port) : 6272

This is an example of output from the show port-security interface gigabitethernet0/2 address command:

Switch# show port-security interface gigabitethernet0/2 address
          Secure Mac Address Table
-------------------------------------------------------------------
Vlan    Mac Address       Type                Ports   Remaining Age
                                                         (mins)
----    -----------       ----                -----   -------------
   1    0006.0700.0800    SecureConfigured    Gi0/2       1
-------------------------------------------------------------------
Total Addresses: 1

This is an example of output from the show port-security interface interface-id vlan command:

Switch# show port-security interface gigabitethernet0/2 vlan 
Default maximum:not set, using 5120
VLAN  Maximum    Current   
    5    default          1
   10    default         54
   11    default        101
   12    default        101
   13    default        201
   14    default        501

Related Commands

Command
Description

clear port-security

Deletes from the MAC address table a specific type of secure address or all the secure addresses on the switch or an interface.

switchport port-security

Enables port security on a port, restricts the use of the port to a user-defined group of stations, and configures secure MAC addresses.


show sdm prefer

Use the show sdm prefer privileged EXEC command to display information about the Switch Database Management (SDM) templates that can be used to maximize used for allocating system resources for a particular feature.

show sdm prefer [default | qos] [ | {begin | exclude | include} expression]

Syntax Description

default

(Optional) Display the template that balances system resources among features.

qos

(Optional) Display the template that maximizes system resources for quality of service (QoS) access control entries (ACEs).

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

When you change the SDM template by using the sdm prefer global configuration command, you must reload the switch for the configuration to take effect. If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template currently in use and the template that will become active after a reload.

The numbers displayed for each template represent an approximate maximum number for each feature resource. The actual number might vary, depending on the actual number of other features configured.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show sdm prefer command:

Switch# show sdm prefer default
 "default" template:
 The selected template optimizes the resources in
 the switch to support this level of features for
 0 routed interfaces and 255 VLANs.

  number of unicast mac addresses:                 8K
  number of IPv4 IGMP groups:                      256
  number of IPv4/MAC qos aces:                     128
  number of IPv4/MAC security aces:                384

This is an example of output from the show sdm prefer qos command:

Switch# show sdm prefer qos
 "qos" template:
 The selected template optimizes the resources in
 the switch to support this level of features for
 0 routed interfaces and 255 VLANs.

  number of unicast mac addresses:                 8K
  number of IPv4 IGMP groups:                      256
  number of IPv4/MAC qos aces:                     384
  number of IPv4/MAC security aces:                128

Related Commands

Command
Description

sdm prefer

Sets the SDM template to maximize resources.



show setup express

Use the show setup express privileged EXEC command to display if Express Setup mode is active on the switch.

show setup express [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Defaults

No default is defined.

Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Examples

This is an example of output from the show setup express command:

Switch# show setup express
express setup mode is active

Related Commands

Command
Description

setup express

Enables Express Setup mode.


show spanning-tree

Use the show spanning-tree user EXEC command to display spanning-tree state information.

show spanning-tree [bridge-group | active [detail] | backbonefast | blockedports | bridge | detail [active] | inconsistentports | interface interface-id | mst | pathcost method | root | summary [totals] | uplinkfast | vlan vlan-id] [ | {begin | exclude | include} expression]

show spanning-tree bridge-group [active [detail] | blockedports | bridge | detail [active] | inconsistentports | interface interface-id | root | summary] [ | {begin | exclude | include} expression]

show spanning-tree vlan vlan-id [active [detail] | blockedports | bridge | detail [active] | inconsistentports | interface interface-id | root | summary] [ | {begin | exclude | include} expression]

show spanning-tree {vlan vlan-id | bridge-group} bridge [address | detail | forward-time | hello-time | id | max-age | priority [system-id] | protocol] [ | {begin | exclude | include} expression]

show spanning-tree {vlan vlan-id | bridge-group} root [address | cost | detail | forward-time | hello-time | id | max-age | port | priority [system-id] [ | {begin | exclude | include} expression]

show spanning-tree interface interface-id [active [detail] | cost | detail [active] | inconsistency | portfast | priority | rootcost | state] [ | {begin | exclude | include} expression]

show spanning-tree mst [configuration [digest]] | [instance-id [detail | interface interface-id [detail]] [ | {begin | exclude | include} expression]

Syntax Description

bridge-group

(Optional) Specify the bridge group number. The range is 1 to 255.

active [detail]

(Optional) Display spanning-tree information only on active interfaces (available only in privileged EXEC mode).

backbonefast

(Optional) Display spanning-tree BackboneFast status.

blockedports

(Optional) Display blocked port information (available only in privileged EXEC mode).

bridge [address | detail | forward-time | hello-time | id | max-age | priority [system-id] | protocol]

(Optional) Display status and configuration of this switch (optional keywords available only in privileged EXEC mode).

detail [active]

(Optional) Display a detailed summary of interface information (active keyword available only in privileged EXEC mode).

inconsistentports

(Optional) Display inconsistent port information (available only in privileged EXEC mode).

interface interface-id [active [detail] | cost | detail [active] | inconsistency | portfast | priority | rootcost | state]

(Optional) Display spanning-tree information for the specified interface (all options except portfast and state available only in privileged EXEC mode). Enter each interface separated by a space. Ranges are not supported. Valid interfaces include physical ports, VLANs, and port channels. The VLAN range is 1 to 4094. The port-channel range is 1 to 6.

mst [configuration [digest]] [instance-id [detail | interface interface-id [detail]]

(Optional) Display the multiple spanning-tree (MST) region configuration and status (available only in privileged EXEC mode).

The keywords have these meanings:

digest—(Optional) Display the MD5 digest included in the current MST configuration identifier (MSTCI). Two separate digests, one for standard and one for prestandard switches, appear (available only in privileged EXEC mode).

The terminology was updated for the implementation of the IEEE standard, and the txholdcount field was added.

The new master role appears for boundary ports.

The word pre-standard or Pre-STD appears when an IEEE standard bridge sends prestandard BPDUs on a port.

The word pre-standard (config) or Pre-STD-Cf appears when a port has been configured to transmit prestandard BPDUs and no prestandard BPDU has been received on that port.

The word pre-standard (rcvd) or Pre-STD-Rx appears when a prestandard BPDU has been received on a port that has not been configured to transmit prestandard BPDUs.

A dispute flag appears when a designated port receives inferior designated information until the port returns to the forwarding state or ceases to be designated.

instance-idYou can specify a single instance ID, a range of IDs separated by a hyphen, or a series of IDs separated by a comma. The range is 1 to 4094. The display shows the number of currently configured instances.

interface interface-id—(Optional) Valid interfaces include physical ports, VLANs, and port channels. The VLAN range is 1 to 4094. The port-channel range is 1 to 6.

detail—(Optional) Display detailed information for the instance or interface.

pathcost method

(Optional) Display the default path cost method (available only in privileged EXEC mode).

root [address | cost | detail | forward-time | hello-time | id | max-age | port | priority [system-id]]

(Optional) Display root switch status and configuration (all keywords available only in privileged EXEC mode).

summary [totals]

(Optional) Display a summary of port states or the total lines of the spanning-tree state section. The words IEEE Standard identify the MST version running on a switch.

uplinkfast

(Optional) Display spanning-tree UplinkFast status.

vlan vlan-id [active [detail] | backbonefast | blockedports | bridge [address | detail | forward-time | hello-time | id | max-age | priority [system-id] | protocol]

(Optional) Display spanning-tree information for the specified VLAN (some keywords available only in privileged EXEC mode). You can specify a single VLAN identified by VLAN ID number, a range of VLANs separated by a hyphen, or a series of VLANs separated by a comma. The range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If the vlan-id variable is omitted, the command applies to the spanning-tree instance for all VLANs.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show spanning-tree active command:

Switch# show spanning-tree active
VLAN0001
  Spanning tree enabled protocol ieee
  Root ID    Priority    32768
             Address     0001.42e2.cdd0
             Cost        3038
             Port        24 (GigabitEthernet0/1)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    49153  (priority 49152 sys-id-ext 1)
             Address     0003.fd63.9580
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 300
  Uplinkfast enabled

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi0/1            Root FWD 3019      128.24   P2p
<output truncated>

This is an example of output from the show spanning-tree detail command:

Switch# show spanning-tree detail
VLAN0001 is executing the ieee compatible Spanning Tree protocol
  Bridge Identifier has priority 49152, sysid 1, address 0003.fd63.9580
  Configured hello time 2, max age 20, forward delay 15
  Current root has priority 32768, address 0001.42e2.cdd0
  Root port is 1 (GigabitEthernet0/1), cost of root path is 3038
  Topology change flag not set, detected flag not set
  Number of topology changes 0 last change occurred 1d16h ago
  Times:  hold 1, topology change 35, notification 2
          hello 2, max age 20, forward delay 15
  Timers: hello 0, topology change 0, notification 0, aging 300
  Uplinkfast enabled

 Port 1 (GigabitEthernet0/1) of VLAN0001 is forwarding
   Port path cost 3019, Port priority 128, Port Identifier 128.24.
   Designated root has priority 32768, address 0001.42e2.cdd0
   Designated bridge has priority 32768, address 00d0.bbf5.c680
   Designated port id is 128.25, designated path cost 19
   Timers: message age 2, forward delay 0, hold 0
   Number of transitions to forwarding state: 1
   Link type is point-to-point by default
   BPDU: sent 0, received 72364
<output truncated>

This is an example of output from the show spanning-tree interface interface-id command:

Switch# show spanning-tree interface gigabitethernet0/1
Vlan             Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
VLAN0001         Root FWD 3019      128.24   P2p

Switch# show spanning-tree summary
Switch is in pvst mode
Root bridge for: none
EtherChannel misconfiguration guard is enabled
Extended system ID   is enabled
Portfast             is disabled by default
PortFast BPDU Guard  is disabled by default
Portfast BPDU Filter is disabled by default
Loopguard            is disabled by default
UplinkFast           is enabled
BackboneFast         is enabled
Pathcost method used is short

Name                   Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
VLAN0001                  1        0         0        11         12
VLAN0002                  3        0         0        1          4
VLAN0004                  3        0         0        1          4
VLAN0006                  3        0         0        1          4
VLAN0031                  3        0         0        1          4
VLAN0032                  3        0         0        1          4
<output truncated>
---------------------- -------- --------- -------- ---------- ----------
37 vlans                  109      0         0        47         156
Station update rate set to 150 packets/sec.

UplinkFast statistics
-----------------------
Number of transitions via uplinkFast (all VLANs)            : 0
Number of proxy multicast addresses transmitted (all VLANs) : 0

BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs)           : 0
Number of inferior BPDUs received (all VLANs)               : 0
Number of RLQ request PDUs received (all VLANs)             : 0
Number of RLQ response PDUs received (all VLANs)            : 0
Number of RLQ request PDUs sent (all VLANs)                 : 0
Number of RLQ response PDUs sent (all VLANs)                : 0

This is an example of output from the show spanning-tree mst configuration command:

Switch# show spanning-tree mst configuration
Name      [region1]
Revision  1
Instance  Vlans Mapped
--------  ------------------
0         1-9,21-4094
1         10-20
----------------------------

This is an example of output from the show spanning-tree mst interface interface-id command:

Switch# show spanning-tree mst interface gigabitethernet0/1
GigabitEthernet0/1 of MST00 is root forwarding
Edge port: no             (default)        port guard : none        (default)
Link type: point-to-point (auto)           bpdu filter: disable     (default)
Boundary : boundary       (STP)            bpdu guard : disable     (default)
Bpdus sent 5, received 74

Instance role state cost      prio vlans mapped
0        root FWD   200000    128  1,12,14-4094

This is an example of output from the show spanning-tree mst 0 command:

Switch# show spanning-tree mst 0
###### MST00        vlans mapped: 1-9,21-4094
Bridge      address 0002.4b29.7a00  priority  32768 (32768 sysid 0)
Root        address 0001.4297.e000  priority  32768 (32768 sysid 0)
             port    Gi0/1           path cost 200038

IST master *this switch
Operational hello time 2, forward delay 15, max age 20, max hops 20
Configured  hello time 2, forward delay 15, max age 20, max hops 20

Interface              role state cost      prio type
--------------------   ---- ----- --------- ---- --------------------------------
GigabitEthernet0/1     root FWD   200000    128  P2P bound(STP)
GigabitEthernet0/2     desg FWD   200000    128  P2P bound(STP)
Port-channel1          desg FWD   200000    128  P2P bound(STP)

Related Commands

Command
Description

clear spanning-tree counters

Clears the spanning-tree counters.

clear spanning-tree detected-protocols

Restarts the protocol migration process.

spanning-tree backbonefast

Enables the BackboneFast feature.

spanning-tree bpdufilter

Prevents an interface from sending or receiving bridge protocol data units (BPDUs).

spanning-tree bpduguard

Puts an interface in the error-disabled state when it receives a BPDU.

spanning-tree cost

Sets the path cost for spanning-tree calculations.

spanning-tree extend system-id

Enables the extended system ID feature.

spanning-tree guard

Enables the root guard or the loop guard feature for all the VLANs associated with the selected interface.

spanning-tree link-type

Overrides the default link-type setting for rapid spanning-tree transitions to the forwarding state.

spanning-tree loopguard default

Prevents alternate or root ports from becoming the designated port because of a failure that leads to a unidirectional link.

spanning-tree mst configuration

Enters multiple spanning-tree (MST) configuration mode through which the MST region configuration occurs.

spanning-tree mst cost

Sets the path cost for MST calculations.

spanning-tree mst forward-time

Sets the forward-delay time for all MST instances.

spanning-tree mst hello-time

Sets the interval between hello BPDUs sent by root switch configuration messages.

spanning-tree mst max-age

Sets the interval between messages that the spanning tree receives from the root switch.

spanning-tree mst max-hops

Sets the number of hops in an MST region before the BPDU is discarded and the information held for an interface is aged.

spanning-tree mst port-priority

Configures an interface priority.

spanning-tree mst priority

Configures the switch priority for the specified spanning-tree instance.

spanning-tree mst root

Configures the MST root switch priority and timers based on the network diameter.

spanning-tree port-priority

Configures an interface priority.

spanning-tree portfast (global configuration)

Globally enables the BPDU filtering or the BPDU guard feature on Port Fast-enabled interfaces or enables the Port Fast feature on all nontrunking interfaces.

spanning-tree portfast (interface configuration)

Enables the Port Fast feature on an interface and all its associated VLANs.

spanning-tree uplinkfast

Accelerates the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself.

spanning-tree vlan

Configures spanning tree on a per-VLAN basis.


show storm-control

Use the show storm-control user EXEC command to display broadcast, multicast, or unicast storm control settings on the switch or on the specified interface or to display storm-control history.

show storm-control [interface-id] [broadcast | multicast | unicast] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) Interface ID for the physical port (including type, module, and port number).

broadcast

(Optional) Display broadcast storm threshold setting.

multicast

(Optional) Display multicast storm threshold setting.

unicast

(Optional) Display unicast storm threshold setting.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

When you enter an interface-id, the storm control thresholds appear for the specified interface.

If you do not enter an interface-id, settings appear for one traffic type for all ports on the switch.

If you do not enter a traffic type, settings appear for broadcast storm control.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of a partial output from the show storm-control command when no keywords are entered. Because no traffic-type keyword was entered, the broadcast storm control settings appear.

Switch> show storm-control
Interface    Filter State   Upper       Lower      Current
---------    -------------  ----------  ---------  ---------
Gi0/1        Forwarding     20 pps      10 pps     5 pps
Gi0/2        Forwarding     50.00%      40.00%     0.00%
<output truncated>

This is an example of output from the show storm-control command for a specified interface. Because no traffic-type keyword was entered, the broadcast storm control settings appear.

Switch> show storm-control gigabitethernet 0/1
Interface    Filter State   Upper       Lower      Current
---------    -------------  ----------  ---------  ---------
Gi0/1        Forwarding     20 pps      10 pps     5 pps

Table 2-15 describes the fields in the show storm-control display.

Table 2-15 show storm-control Field Descriptions 

Field
Description

Interface

Displays the ID of the interface.

Filter State

Displays the status of the filter:

Blocking—Storm control is enabled, and a storm has occurred.

Forwarding—Storm control is enabled, and no storms have occurred.

Inactive—Storm control is disabled.

Upper

Displays the rising suppression level as a percentage of total available bandwidth in packets per second or in bits per second.

Lower

Displays the falling suppression level as a percentage of total available bandwidth in packets per second or in bits per second.

Current

Displays the bandwidth usage of broadcast traffic or the specified traffic type (broadcast, multicast, or unicast) as a percentage of total available bandwidth. This field is only valid when storm control is enabled.


Related Commands

Command
Description

storm-control

Sets the broadcast, multicast, or unicast storm control levels for the switch.


show system mtu

Use the show system mtu privileged EXEC command to display the global maximum transmission unit (MTU) or maximum packet size set for the switch.

show system mtu [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

Privileged EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you have used the system mtu or system mtu jumbo global configuration command to change the MTU setting, the new setting does not take effect until you reset the switch.

The system MTU refers to ports operating at 10/100 Mb/s; the system jumbo MTU refers to Gigabit ports; the system routing MTU refers to routed ports.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show system mtu command:

Switch# show system mtu
System MTU size is 1500 bytes
System Jumbo MTU size is 1550 bytes

Related Commands

Command
Description

system mtu

Sets the MTU size for the Fast Ethernet, Gigabit Ethernet, or routed ports.


show udld

Use the show udld user EXEC command to display UniDirectional Link Detection (UDLD) administrative and operational status for all ports or the specified port.

show udld [interface-id] [ | {begin | exclude | include} expression]

Syntax Description

interface-id

(Optional) ID of the interface and port number. Valid interfaces include physical ports and VLANs. The VLAN range is 1 to 4094.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

If you do not enter an interface-id, administrative and operational UDLD status for all interfaces appear.

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show udld interface-id command. For this display, UDLD is enabled on both ends of the link, and UDLD detects that the link is bidirectional. Table 2-16 describes the fields in this display.

Switch> show udld gigabitethernet0/1
Interface gi0/1
---
Port enable administrative configuration setting: Follows device default
Port enable operational state: Enabled
Current bidirectional state: Bidirectional
Current operational state: Advertisement - Single Neighbor detected
Message interval: 60
Time out interval: 5
    Entry 1
    Expiration time: 146
    Device ID: 1
    Current neighbor state: Bidirectional
    Device name: Switch-A 
    Port ID: Gi0/1
    Neighbor echo 1 device: Switch-B
    Neighbor echo 1 port: Gi0/2 
    Message interval: 5
    CDP Device name: Switch-A

Table 2-16 show udld Field Descriptions 

Field
Description

Interface

The interface on the local device configured for UDLD.

Port enable administrative configuration setting

How UDLD is configured on the port. If UDLD is enabled or disabled, the port enable configuration setting is the same as the operational enable state. Otherwise, the enable operational setting depends on the global enable setting.

Port enable operational state

Operational state that shows whether UDLD is actually running on this port.

Current bidirectional state

The bidirectional state of the link. An unknown state appears if the link is down or if it is connected to an UDLD-incapable device. A bidirectional state appears if the link is a normal two-way connection to a UDLD-capable device. All other values mean miswiring.

Current operational state

The current phase of the UDLD state machine. For a normal bidirectional link, the state machine is most often in the Advertisement phase.

Message interval

How often advertisement messages are sent from the local device. Measured in seconds.

Time out interval

The time period, in seconds, that UDLD waits for echoes from a neighbor device during the detection window.

Entry 1

Information from the first cache entry, which contains a copy of echo information received from the neighbor.

Expiration time

The amount of time in seconds remaining before this cache entry is aged out.

Device ID

The neighbor device identification.

Current neighbor state

The neighbor's current state. If both the local and neighbor devices are running UDLD normally, the neighbor state and local state should be bidirectional. If the link is down or the neighbor is not UDLD-capable, no cache entries appear.

Device name

The device name or the system serial number of the neighbor. The system serial number appears if the device name is not set or is set to the default (Switch).

Port ID

The neighbor port ID enabled for UDLD.

Neighbor echo 1 device

The device name of the neighbors' neighbor from which the echo originated.

Neighbor echo 1 port

The port number ID of the neighbor from which the echo originated.

Message interval

The rate, in seconds, at which the neighbor is sending advertisement messages.

CDP device name

The CDP device name or the system serial number. The system serial number appears if the device name is not set or is set to the default (Switch).


Related Commands

Command
Description

udld

Enables aggressive or normal mode in UDLD or sets the configurable message timer time.

udld port

Enables UDLD on an individual interface or prevents a fiber-optic interface from being enabled by the udld global configuration command.

udld reset

Resets all interfaces shutdown by UDLD and permits traffic to begin passing through them again.


show version

Use the show version user EXEC command to display version information for the hardware and firmware.

show version [ | {begin | exclude | include} expression]

Syntax Description

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show version command:


Note Though visible in the show version output, the configuration register information is not supported on the switch.


Switch> show version
Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(0.0.16)FX, CISCO 
DEVELOPMENT TEST VERSION
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Tue 17-May-05 01:43 by yenanh

ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M), Version 12.2 [lqian-flo_pilsner 100]

 Switch uptime is 3 days, 20 hours, 8 minutes
System returned to ROM by power-on
System image file is "flash:c2960-lanbase-mz.122-0.0.16.FX.bin"

cisco WS-C2960-24TC-L (PowerPC405) processor with 61440K/4088K bytes of memory.
Processor board ID FHH0916001J
Last reset from power-on
Target IOS Version 12.2(37)EY
1 Virtual Ethernet interface
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
64K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:0B:FC:FF:E8:80
Motherboard assembly number     : 73-9832-02
Motherboard serial number       : FHH0916001J
Motherboard revision number     : 01
System serial number            : FHH0916001J
Hardware Board Revision Number  : 0x01


Switch   Ports  Model              SW Version              SW Image            
------   -----  -----              ----------              ----------          
*    1   26     WS-C2960-24TC-L    12.2(0.0.16)FX          C2960-LANBASE-M     

Configuration register is 0xF

show vlan

Use the show vlan user EXEC command to display the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) on the switch.


Note The LAN Lite image does not support remote SPAN.


show vlan [brief | id vlan-id | mtu | name vlan-name | remote-span | summary] [ | {begin | exclude | include} expression]

Syntax Description

brief

(Optional) Display one line for each VLAN with the VLAN name, status, and its ports.

id vlan-id

(Optional) Display information about a single VLAN identified by VLAN ID number. For vlan-id, the range is 1 to 4094.

mtu

(Optional) Display a list of VLANs and the minimum and maximum transmission unit (MTU) sizes configured on ports in the VLAN.

name vlan-name

(Optional) Display information about a single VLAN identified by VLAN name. The VLAN name is an ASCII string from 1 to 32 characters.

remote-span

(Optional) Display information about Remote SPAN (RSPAN) VLANs.

summary

(Optional) Display VLAN summary information.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.



Note Though visible in the command-line help string, the ifindex, internal usage, and private-vlan keywords are not supported.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

In the show vlan mtu command output, the MTU_Mismatch column shows whether all the ports in the VLAN have the same MTU. When yes appears in this column, it means that the VLAN has ports with different MTUs, and packets that are switched from a port with a larger MTU to a port with a smaller MTU might be dropped. If the VLAN does not have an SVI, the hyphen (-) symbol appears in the SVI_MTU column. If the MTU-Mismatch column displays yes, the names of the port with the MinMTU and the port with the MaxMTU appear.

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show vlan command. Table 2-17 describes the fields in the display.

Switch> show vlan
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/1, Gi0/2, Gi0/3, Gi0/4
                                                Gi0/5, Gi0/6, Gi0/7, Gi0/8
                                                Gi0/9, Gi0/10, Gi0/11, Gi0/12
                                                Gi0/13, Gi0/14, Gi0/15, Gi0/16
<output truncated>

2    VLAN0002                         active
3    VLAN0003                         active

<output truncated>

1000 VLAN1000                         active
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        1002   1003
2    enet  100002     1500  -      -      -        -    -        0      0
3    enet  100003     1500  -      -      -        -    -        0      0

<output truncated>

1005 trnet 101005     1500  -      -      -        ibm  -        0      0

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type              Ports
------ --------- ----------------- ------------------------------------------
 
   

Table 2-17 show vlan Command Output Fields 

Field
Description

VLAN

VLAN number.

Name

Name, if configured, of the VLAN.

Status

Status of the VLAN (active or suspend).

Ports

Ports that belong to the VLAN.

Type

Media type of the VLAN.

SAID

Security association ID value for the VLAN.

MTU

Maximum transmission unit size for the VLAN.

Parent

Parent VLAN, if one exists.

RingNo

Ring number for the VLAN, if applicable.

BrdgNo

Bridge number for the VLAN, if applicable.

Stp

Spanning Tree Protocol type used on the VLAN.

BrdgMode

Bridging mode for this VLAN—possible values are source-route bridging (SRB) and source-route transparent (SRT); the default is SRB.

Trans1

Translation bridge 1.

Trans2

Translation bridge 2.

Remote SPAN VLANs

Identifies any RSPAN VLANs that have been configured.

Primary/Secondary/
Type/Ports

 


This is an example of output from the show vlan summary command:

Switch> show vlan summary
Number of existing VLANs           : 45
 Number of existing VTP VLANs      : 45
 Number of existing extended VLANs : 0

This is an example of output from the show vlan id command.

Switch# show vlan id 2
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
2    VLAN0200                         active    Gi0/1, Gi0/2

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
2    enet  100002     1500  -      -      -        -    -        0      0

Remote SPAN VLAN
----------------
Disabled

Related Commands

Command
Description

switchport mode

Configures the VLAN membership mode of a port.

vlan (global configuration)

Enables VLAN configuration mode where you can configure VLANs 1 to 4094.

vlan (VLAN configuration)

Configures VLAN characteristics in the VLAN database. Only available for normal-range VLANs (VLAN IDs 1 to 1005). Do not enter leading zeros.


show vmps

Use the show vmps user EXEC command without keywords to display the VLAN Query Protocol (VQP) version, reconfirmation interval, retry count, VLAN Membership Policy Server (VMPS) IP addresses, and the current and primary servers, or use the statistics keyword to display client-side statistics.

show vmps [statistics] [ | {begin | exclude | include} expression]

Syntax Description

statistics

(Optional) Display VQP client-side statistics and counters.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enterexclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show vmps command:

Switch> show vmps
VQP Client Status:
--------------------
VMPS VQP Version:   1
Reconfirm Interval: 60 min
Server Retry Count: 3
VMPS domain server:

Reconfirmation status
---------------------
VMPS Action:         other

This is an example of output from the show vmps statistics command. Table 2-18 describes each field in the display.

Switch> show vmps statistics
VMPS Client Statistics
----------------------
VQP  Queries:               0
VQP  Responses:             0
VMPS Changes:               0
VQP  Shutdowns:             0
VQP  Denied:                0
VQP  Wrong Domain:          0
VQP  Wrong Version:         0
VQP  Insufficient Resource: 0 

Table 2-18 show vmps statistics Field Descriptions 

Field
Description

VQP Queries

Number of queries sent by the client to the VMPS.

VQP Responses

Number of responses sent to the client from the VMPS.

VMPS Changes

Number of times that the VMPS changed from one server to another.

VQP Shutdowns

Number of times the VMPS sent a response to shut down the port. The client disables the port and removes all dynamic addresses on this port from the address table. You must administratively re-enable the port to restore connectivity.

VQP Denied

Number of times the VMPS denied the client request for security reasons. When the VMPS response denies an address, no frame is forwarded to or from the workstation with that address (broadcast or multicast frames are delivered to the workstation if the port has been assigned to a VLAN). The client keeps the denied address in the address table as a blocked address to prevent more queries from being sent to the VMPS for each new packet received from this workstation. The client ages the address if no new packets are received from this workstation on this port within the aging time period.

VQP Wrong Domain

Number of times the management domain in the request does not match the one for the VMPS. Any previous VLAN assignments of the port are not changed. This response means that the server and the client have not been configured with the same VTP management domain.

VQP Wrong Version

Number of times the version field in the query packet contains a value that is higher than the version supported by the VMPS. The VLAN assignment of the port is not changed. The switches send only VMPS Version 1 requests.

VQP Insufficient Resource

Number of times the VMPS is unable to answer the request because of a resource availability problem. If the retry limit has not yet been reached, the client repeats the request with the same server or with the next alternate server, depending on whether the per-server retry count has been reached.


Related Commands

Command
Description

clear vmps statistics

Clears the statistics maintained by the VQP client.

vmps reconfirm (privileged EXEC)

Sends VQP queries to reconfirm all dynamic VLAN assignments with the VMPS.

vmps retry

Configures the per-server retry count for the VQP client.

vmps server

Configures the primary VMPS and up to three secondary servers.


show vtp

Use the show vtp user EXEC command to display general information about the VLAN Trunking Protocol (VTP) management domain, status, and counters.

show vtp {counters | password | status} [ | {begin | exclude | include} expression]

Syntax Description

counters

Display the VTP statistics for the switch.

password

Display the configured VTP password.

status

Display general information about the VTP management domain status.

| begin

(Optional) Display begins with the line that matches the expression.

| exclude

(Optional) Display excludes lines that match the expression.

| include

(Optional) Display includes lines that match the specified expression.

expression

Expression in the output to use as a reference point.


Command Modes

User EXEC

Command History

Release
Modification

12.2(37)EY

This command was introduced.


Usage Guidelines

Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.

Examples

This is an example of output from the show vtp counters command. Table 2-19 describes each field in the display.

Switch> show vtp counters

VTP statistics:
Summary advertisements received    : 0
Subset advertisements received     : 0
Request advertisements received    : 0
Summary advertisements transmitted : 0
Subset advertisements transmitted  : 0
Request advertisements transmitted : 0
Number of config revision errors   : 0
Number of config digest errors     : 0
Number of V1 summary errors        : 0

VTP pruning statistics:

Trunk            Join Transmitted Join Received    Summary advts received from
                                                   non-pruning-capable device
---------------- ---------------- ---------------- ---------------------------
Fa0/47            0                0                0
Fa0/48            0                0                0
Gi0/1             0                0                0
Gi0/2             0                0                0

Table 2-19 show vtp counters Field Descriptions 

Field
Description

Summary advertisements received

Number of summary advertisements received by this switch on its trunk ports. Summary advertisements contain the management domain name, the configuration revision number, the update timestamp and identity, the authentication checksum, and the number of subset advertisements to follow.

Subset advertisements received

Number of subset advertisements received by this switch on its trunk ports. Subset advertisements contain all the information for one or more VLANs.

Request advertisements received

Number of advertisement requests received by this switch on its trunk ports. Advertisement requests normally request information on all VLANs. They can also request information on a subset of VLANs.

Summary advertisements transmitted

Number of summary advertisements sent by this switch on its trunk ports. Summary advertisements contain the management domain name, the configuration revision number, the update timestamp and identity, the authentication checksum, and the number of subset advertisements to follow.

Subset advertisements transmitted

Number of subset advertisements sent by this switch on its trunk ports. Subset advertisements contain all the information for one or more VLANs.

Request advertisements transmitted

Number of advertisement requests sent by this switch on its trunk ports. Advertisement requests normally request information on all VLANs. They can also request information on a subset of VLANs.

Number of configuration revision errors

Number of revision errors.

Whenever you define a new VLAN, delete an existing one, suspend or resume an existing VLAN, or modify the parameters on an existing VLAN, the configuration revision number of the switch increments.

Revision errors increment whenever the switch receives an advertisement whose revision number matches the revision number of the switch, but the MD5 digest values do not match. This error means that the VTP password in the two switches is different or that the switches have different configurations.

These errors means that the switch is filtering incoming advertisements, which causes the VTP database to become unsynchronized across the network.

Number of configuration digest errors

Number of MD5 digest errors.

Digest errors increment whenever the MD5 digest in the summary packet and the MD5 digest of the received advertisement calculated by the switch do not match. This error usually means that the VTP password in the two switches is different. To solve this problem, make sure the VTP password on all switches is the same.

These errors mean that the switch is filtering incoming advertisements, which causes the VTP database to become unsynchronized across the network.

Number of V1 summary errors

Number of Version 1 errors.

Version 1 summary errors increment whenever a switch in VTP V2 mode receives a VTP Version 1 frame. These errors mean that at least one neighboring switch is either running VTP Version 1 or VTP Version 2 with V2-mode disabled. To solve this problem, change the configuration of the switches in VTP V2-mode to disabled.

Join Transmitted

Number of VTP pruning messages sent on the trunk.

Join Received

Number of VTP pruning messages received on the trunk.

Summary Advts Received from non-pruning-capable device

Number of VTP summary messages received on the trunk from devices that do not support pruning.


This is an example of output from the show vtp status command. Table 2-20 describes each field in the display.

Switch> show vtp status
VTP Version                     : 2
Configuration Revision          : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs        : 45
VTP Operating Mode              : Transparent
VTP Domain Name                 : shared_testbed1
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Enabled
MD5 digest                      : 0x3A 0x29 0x86 0x39 0xB4 0x5D 0x58 0xD7

Table 2-20 show vtp status Field Descriptions 

Field
Description

VTP Version

Displays the VTP version operating on the switch. By default, the switch implements Version 1 but can be set to Version 2.

Configuration Revision

Current configuration revision number on this switch.

Maximum VLANs Supported Locally

Maximum number of VLANs supported locally.

Number of Existing VLANs

Number of existing VLANs.

VTP Operating Mode

Displays the VTP operating mode, which can be server, client, or transparent.

Server: a switch in VTP server mode is enabled for VTP and sends advertisements. You can configure VLANs on it. The switch guarantees that it can recover all the VLAN information in the current VTP database from NVRAM after reboot. By default, every switch is a VTP server.

Note The switch automatically changes from VTP server mode to VTP client mode if it detects a failure while writing the configuration to NVRAM and cannot return to server mode until the NVRAM is functioning.

Client: a switch in VTP client mode is enabled for VTP, can send advertisements, but does not have enough nonvolatile storage to store VLAN configurations. You cannot configure VLANs on it. When a VTP client starts up, it does not send VTP advertisements until it receives advertisements to initialize its VLAN database.

Transparent: a switch in VTP transparent mode is disabled for VTP, does not send or learn from advertisements sent by other devices, and cannot affect VLAN configurations on other devices in the network. The switch receives VTP advertisements and forwards them on all trunk ports except the one on which the advertisement was received.

VTP Domain Name

Name that identifies the administrative domain for the switch.

VTP Pruning Mode

Displays whether pruning is enabled or disabled. Enabling pruning on a VTP server enables pruning for the entire management domain. Pruning restricts flooded traffic to those trunk links that the traffic must use to access the appropriate network devices.

VTP V2 Mode

Displays if VTP Version 2 mode is enabled. All VTP Version 2 switches operate in Version 1 mode by default. Each VTP switch automatically detects the capabilities of all the other VTP devices. A network of VTP devices should be configured to Version 2 only if all VTP switches in the network can operate in Version 2 mode.

VTP Traps Generation

Displays whether VTP traps are sent to a network management station.

MD5 Digest

A 16-byte checksum of the VTP configuration.

Configuration Last Modified

Displays the date and time of the last configuration modification. Displays the IP address of the switch that caused the configuration change to the database.


Related Commands

Command
Description

clear vtp counters

Clears the VTP and pruning counters.

vtp (global configuration)

Configures the VTP filename, interface name, domain name, and mode.

vtp (VLAN configuration)

Configures the VTP domain name, password, pruning, and mode.