- Index
- Preface
- Using the Command Line Interface
- Catalyst 2960, 2960-S, and 2960-P Switch Cisco IOS Commands - aaa accounting through reserved-only
- Catalyst 2960, 2960-S, and 2960-P Switch Cisco IOS Commands - rmon collection through show vtp
- Catalyst 2960, 2960-S, and 2960-P Switch Cisco IOS Commands - shutdown through vtp
- Catalyst 2960, 2960-S, and 2960-P Switch Bootloader Commands
- Catalyst 2960, 2960-S, and 2960-P Switch Debug Commands
- Catalyst 2960, 2960-S, and 2960-P Switch Show Platform Commands
- Acknowledgments for Open-Source Software
- rmon collection stats
- sdm prefer
- service password-recovery
- service-policy
- session
- set
- setup
- setup express
- show access-lists
- show archive status
- show arp access-list
- show authentication
- show auto qos
- show boot
- show cable-diagnostics tdr
- show cisp
- show class-map
- show cluster
- show cluster candidates
- show cluster members
- show controllers cpu-interface
- show controllers ethernet-controller
- show controllers ethernet-controller stack port
- show controllers power inline
- show controllers tcam
- show controllers utilization
- show diagnostic
- 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 arp inspection
- show ip dhcp snooping
- show ip dhcp snooping binding
- show ip dhcp snooping database
- show ip dhcp snooping statistics
- show ip igmp profile
- show ip igmp snooping
- show ip igmp snooping groups
- show ip igmp snooping mrouter
- show ip igmp snooping querier
- show ip source binding
- show ip verify source
- show ipv6 mld snooping
- show ipv6 mld snooping address
- show ipv6 mld snooping mrouter
- show ipv6 mld snooping querier
- show ipv6 route updated
- show lacp
- show link state group
- show location
- show logging onboard
- show mac access-group
- 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 learning
- show mac address-table move update
- show mac address-table notification
- show mac address-table static
- show mac address-table vlan
- show mls qos
- show mls qos aggregate-policer
- show mls qos input-queue
- show mls qos interface
- show mls qos maps
- show mls qos queue-set
- show mls qos vlan
- show monitor
- show mvr
- show mvr interface
- show mvr members
- show network-policy profile
- show nmsp
- show pagp
- show policy-map
- show port-security
- show power inline
- show psp config
- show psp statistics
- show sdm prefer
- show setup express
- show spanning-tree
- show storm-control
- show switch
- show system mtu
- show udld
- show version
- show vlan
- show vmps
- show vtp
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
|
|
---|---|
12.2(25)FX |
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 gigabitethernet2/0/1
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
|
|
---|---|
show rmon statistics |
Displays RMON statistics. |
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.
For Catalyst 2960 switches and Catalyst 2960-C Fast Ethernet switches:
sdm prefer {default | dual-ipv4-and-ipv6 default | lanbase-routing | qos}
no sdm prefer
For Catalyst 2960-S switches:
sdm prefer {default | lanbase-routing}
no sdm prefer
For Catalyst 2960-C Gigabit Ethernet switches:
sdm prefer default
Syntax Description
Defaults
The default template provides a balance to all features.
Command Modes
Global configuration
Command History
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 template.
Template resources are based on 0 routed interfaces and 255 VLANs, except for the LAN base routing template, which supports 8 routed interfaces and 255 VLANs.
Template values are different depending on the platforms and Catalyst 2960-C SKUs.
A Catalyst 2960-S switch running the LAN base image uses a default template that includes maximum resources for all supported features; it does not require the dual or qos templates. However, to enable static routing on the Catalyst 2960-S, you must configure the lanbase-routing template.
Catalyst 2960-C Gigabit Ethernet switches support only a default template.
For Catalyst 2960 switches and 2960-C Fast Ethernet switches:
•Do not use the routing template if you are not using static routing on your switch. Entering the sdm prefer lanbase-routing global configuration command prevents other features from using the memory allocated to unicast routing in the routing template.
•Do not use the ipv4-and-ipv6 template if you do not plan to enable IPv6 functionality on the switch. Entering the sdm prefer ipv4-and-ipv6 global configuration command divides resources between IPv4 and IPv6, limiting those allocated to IPv4 forwarding.
Enter the show sdm prefer privileged EXEC command to see which template is active on the switch or to see the resource allocations of any template.
Examples
This example shows how to use the QoS template:
Switch(config)# sdm prefer qos
Switch(config)# exit
Switch# reload
This example shows how to configure the default template on a switch:
Switch(config)# sdm prefer default
Switch(config)# exit
Switch# reload
This example shows how to configure the dual IPv4-and-IPv6 default template on a switch:
Switch(config)# sdm prefer dual-ipv4-and-ipv6 default
Switch(config)# exit
Switch# reload
Related Commands
|
|
---|---|
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
|
|
---|---|
12.2(25)FX |
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)?

Note 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.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.
When you enter the service password-recovery or no service password-recovery command on the stack master, it is propagated throughout the stack and applied to all switches in the stack.
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
|
|
---|---|
show version |
Displays version information for the hardware and firmware. |
service-policy
Use the service-policy interface configuration command to apply a policy map defined by the policy-map command to the input of a physical port. Use the no form of this command to remove the policy map and port association.
service-policy input policy-map-name
no service-policy input policy-map-name

Note To use this command, the switch must be running the LAN Base image.
Syntax Description
input policy-map-name |
Apply the specified policy map to the input of a physical port. |

Note Though visible in the command-line help strings, the history keyword is not supported, and you should ignore the statistics that it gathers. The output keyword is also not supported.
Defaults
No policy maps are attached to the port.
Command Modes
Interface configuration
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
Policy maps can be configured on physical ports.
You can apply a policy map to incoming traffic on a physical port.
Classification using a port trust state (for example, mls qos trust [cos | dscp | ip-precedence] and a policy map (for example, service-policy input policy-map-name) are mutually exclusive. The last one configured overwrites the previous configuration.
Examples
This example shows how to apply plcmap1 to an physical ingress port:
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# service-policy input plcmap1
This example shows how to remove plcmap2 from a physical port:
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# no service-policy input plcmap2
You can verify your settings by entering the show running-config privileged EXEC command.
Related Commands
session
Use the session privileged EXEC command on the stack master to access a specific stack member.
session stack-member-number

Note This command is supported only on Catalyst 2960-S switches running the LAN base image.
Syntax Description
stack-member-number |
Specify the member number. The range is 1 to 4. |

Note Although visible in the command-line help string, the processor keyword is not supported.
Defaults
No default is defined.
Command Modes
Global configuration
Command History
|
|
---|---|
12.2(53)SE1 |
This command was introduced. |
Usage Guidelines
When you access the member, its member number is appended to the system prompt.
Use the session command from the master to access a member switch.
Use the session command with processor 1 from the master or a standalone switch to access the internal controller. A standalone switch is always member 1.
Examples
This example shows how to access member 6:
Switch(config)# session 6
Switch-6#
Related Commands
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
Defaults
No traffic classification is defined.
Command Modes
Policy-map class configuration
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
12.2(25)SED |
The ip keyword is optional. |
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.
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
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
|
|
---|---|
12.2(25)FX |
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
GigabitEthernet6/0/1 unassigned YES unset up up
GigabitEthernet6/0/2 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 GigabitEthernet6/0/1
no ip address
!
interface GigabitEthernet6/0/2
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
|
|
---|---|
show running-config |
Displays the running configuration on the switch. |
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
|
|
---|---|
12.2(25)FX |
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.


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
|
|
---|---|
show setup express |
Displays if Express Setup mode is active. |
show access-lists
Use the show access-lists privileged EXEC command to display access control lists (ACLs) configured on the switch.
show access-lists [name | number | hardware counters | ipc]
Syntax DescriptionT
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
The switch supports only IP standard and extended access lists. Therefore, the allowed numbers are only 1 to 199 and 1300 to 2699.
This command also displays the MAC ACLs that are configured.

Note To use this command, the switch must be running the LAN Base image.

Note Though visible in the command-line help strings, the rate-limit keywords are not supported.
Examples
This is an example of output from the show access-lists command:
Switch# show access-lists
Standard IP access list 1
10 permit 1.1.1.1
20 permit 2.2.2.2
30 permit any
40 permit 0.255.255.255, wildcard bits 12.0.0.0
Standard IP access list videowizard_1-1-1-1
10 permit 1.1.1.1
Standard IP access list videowizard_10-10-10-10
10 permit 10.10.10.10
Extended IP access list 121
10 permit ahp host 10.10.10.10 host 20.20.10.10 precedence routine
Extended IP access list CMP-NAT-ACL
Dynamic Cluster-HSRP deny ip any any
10 deny ip any host 19.19.11.11
20 deny ip any host 10.11.12.13
Dynamic Cluster-NAT permit ip any any
10 permit ip host 10.99.100.128 any
20 permit ip host 10.46.22.128 any
30 permit ip host 10.45.101.64 any
40 permit ip host 10.45.20.64 any
50 permit ip host 10.213.43.128 any
60 permit ip host 10.91.28.64 any
70 permit ip host 10.99.75.128 any
80 permit ip host 10.38.49.0 any
This is an example of output from the show access-lists hardware counters command:
Switch# show access-lists hardware counters
L2 ACL INPUT Statistics
Drop: All frame count: 855
Drop: All bytes count: 94143
Drop And Log: All frame count: 0
Drop And Log: All bytes count: 0
Bridge Only: All frame count: 0
Bridge Only: All bytes count: 0
Bridge Only And Log: All frame count: 0
Bridge Only And Log: All bytes count: 0
Forwarding To CPU: All frame count: 0
Forwarding To CPU: All bytes count: 0
Forwarded: All frame count: 2121
Forwarded: All bytes count: 180762
Forwarded And Log: All frame count: 0
Forwarded And Log: All bytes count: 0
L3 ACL INPUT Statistics
Drop: All frame count: 0
Drop: All bytes count: 0
Drop And Log: All frame count: 0
Drop And Log: All bytes count: 0
Bridge Only: All frame count: 0
Bridge Only: All bytes count: 0
Bridge Only And Log: All frame count: 0
Bridge Only And Log: All bytes count: 0
Forwarding To CPU: All frame count: 0
Forwarding To CPU: All bytes count: 0
Forwarded: All frame count: 13586
Forwarded: All bytes count: 1236182
Forwarded And Log: All frame count: 0
Forwarded And Log: All bytes count: 0
L2 ACL OUTPUT Statistics
Drop: All frame count: 0
Drop: All bytes count: 0
Drop And Log: All frame count: 0
Drop And Log: All bytes count: 0
Bridge Only: All frame count: 0
Bridge Only: All bytes count: 0
Bridge Only And Log: All frame count: 0
Bridge Only And Log: All bytes count: 0
Forwarding To CPU: All frame count: 0
Forwarding To CPU: All bytes count: 0
Forwarded: All frame count: 232983
Forwarded: All bytes count: 16825661
Forwarded And Log: All frame count: 0
Forwarded And Log: All bytes count: 0
L3 ACL OUTPUT Statistics
Drop: All frame count: 0
Drop: All bytes count: 0
Drop And Log: All frame count: 0
Drop And Log: All bytes count: 0
Bridge Only: All frame count: 0
Bridge Only: All bytes count: 0
Bridge Only And Log: All frame count: 0
Bridge Only And Log: All bytes count: 0
Forwarding To CPU: All frame count: 0
Forwarding To CPU: All bytes count: 0
Forwarded: All frame count: 514434
Forwarded: All bytes count: 39048748
Forwarded And Log: All frame count: 0
Forwarded And Log: All bytes count: 0
Related Commands
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
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
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
|
|
---|---|
archive download-sw |
Downloads a new image from a TFTP server to the switch. |
show arp access-list
Use the show arp access-list EXEC command to display detailed information about Address Resolution Protocol (ARP) access control (lists).
show arp access-list [acl-name]
Syntax Description
acl-name |
(Optional) Name of the ACL. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Examples
This is an example of output from the show arp access-list command:
Switch# show arp access-list
ARP access list rose
permit ip 10.101.1.1 0.0.0.255 mac any
permit ip 20.3.1.0 0.0.0.255 mac any
Related Commands
show authentication
Use the show authentication EXEC command to display information about authentication manager events on the switch.
show authentication {interface interface-id | registrations | sessions [session-id session-id] [handle handle] [interface interface-id] [mac mac] [method method] | statistics [summary]}
Syntax Description
Command Default
This command has no default settings.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Usage Guidelines
Table 2-27 describes the significant fields shown in the output of the show authentication command.

Note The possible values for the status of sessions are shown below. For a session in terminal state, Authz Success or Authz Failed is displayed along with No methods if no method has provided a result.
Table 2-28 lists the possible values for the state of methods. For a session in a terminal state, Authc Success, Authc Failed, or Failed over are displayed. Failed over means that an authentication method ran and then failed over to the next method, which did not provide a result. Not run appears for sessions that synchronized on standby.
Examples
This is an example the show authentication registrations command:
Switch# show authentication registrations
Auth Methods registered with the Auth Manager:
Handle Priority Name
3 0 dot1x
2 1 mab
1 2 webauth
The is an example of the show authentication interface interface-id command:
Switch# show authentication interface gigabitethernet1/0/23
Client list:
MAC Address Domain Status Handle Interface
000e.84af.59bd DATA Authz Success 0xE0000000 GigabitEthernet1/0/23
Available methods list:
Handle Priority Name
3 0 dot1x
Runnable methods list:
Handle Priority Name
3 0 dot1x
This is an example of the show authentication sessions command:
Switch# show authentication sessions
Interface MAC Address Method Domain Status Session ID
Gi3/45 (unknown) N/A DATA Authz Failed 0908140400000007003651EC
Gi3/46 (unknown) N/A DATA Authz Success 09081404000000080057C274
This is an example of the show authentication sessions command for a specified interface:
Switch# show authentication sessions int gigabitethernet 3/0/46
Interface: GigabitEthernet3/0/46
MAC Address: Unknown
IP Address: Unknown
Status: Authz Success
Domain: DATA
Oper host mode: multi-host
Oper control dir: both
Authorized By: Guest Vlan
Vlan Policy: 4094
Session timeout: N/A
Idle timeout: N/A
Common Session ID: 09081404000000080057C274
Acct Session ID: 0x0000000A
Handle: 0xCC000008
Runnable methods list:
Method State
dot1x Failed over
This is an example of the show authentication sessions command for a specified MAC address:
Switch# show authentication sessions mac 000e.84af.59bd
Interface:
MAC Address: 000e.84af.59bd
Status: Authz Success
Domain: DATA
Oper host mode: single-host
Authorized By: Authentication Server
Vlan Policy: 10
Handle: 0xE0000000
Runnable methods list:
Method State
dot1x Authc Success
This is an example of the show authentication session method command for a specified method:
Switch# show authentication sessions method mab
No Auth Manager contexts match supplied criteria
Switch# show authentication sessions method dot1x
MAC Address Domain Status Handle Interface
000e.84af.59bd DATA Authz Success 0xE0000000 GigabitEthernet1/23
Related Commands
show auto qos
To display the quality of service (QoS) commands entered on the interfaces on which automatic QoS (auto-QoS) is enabled, use the show auto qos command in EXEC mode.
show auto qos [interface [interface-id]]
Syntax Description
interface [interface-id] |
(Optional) Display auto-QoS information for the specified port or for all ports. Valid interfaces include physical ports. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
12.2(40)SE |
The information in the command output changed. |
Usage Guidelines
The show auto qos command output shows only the auto-QoS command entered on each interface. The show auto qos interface interface-id command output shows the auto-QoS command entered on a specific interface.
Use the show running-config privileged EXEC command to display the auto-QoS configuration and the user modifications.
The show auto qos command output also shows the service policy information for the Cisco IP phone.
To display information about the QoS configuration that might be affected by auto-QoS, use one of these commands:
•show mls qos
•show mls qos maps cos-dscp
•show mls qos interface [interface-id] [buffers | queueing]
•show mls qos maps [cos-dscp | cos-input-q | cos-output-q | dscp-cos | dscp-input-q | dscp-output-q]
•show mls qos input-queue
•show running-config

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show auto qos command after the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered:
Switch# show auto qos
GigabitEthernet2/0/4
auto qos voip cisco-softphone
GigabitEthernet2/0/5
auto qos voip cisco-phone
GigabitEthernet2/0/6
auto qos voip cisco-phone
This is an example of output from the show auto qos interface interface-id command when the auto qos voip cisco-phone interface configuration command is entered:
Switch# show auto qos interface gigabitethernet 2/0/5
GigabitEthernet2/0/5
auto qos voip cisco-phone
This is an example of output from the show running-config privileged EXEC command when the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered:
Switch# show running-config
Building configuration...
...
mls qos map policed-dscp 24 26 46 to 0
mls qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos srr-queue input bandwidth 90 10
mls qos srr-queue input threshold 1 8 16
mls qos srr-queue input threshold 2 34 66
mls qos srr-queue input buffers 67 33
mls qos srr-queue input cos-map queue 1 threshold 2 1
mls qos srr-queue input cos-map queue 1 threshold 3 0
mls qos srr-queue input cos-map queue 2 threshold 1 2
mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7
mls qos srr-queue input cos-map queue 2 threshold 3 3 5
mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue input dscp-map queue 1 threshold 3 32
mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48
mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55 56
mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63
mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 2 4
mls qos srr-queue output cos-map queue 4 threshold 2 1
mls qos srr-queue output cos-map queue 4 threshold 3 0
mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7
mls qos queue-set output 1 threshold 1 100 100 100 100
mls qos queue-set output 1 threshold 2 75 75 75 250
mls qos queue-set output 1 threshold 3 75 150 100 300
mls qos queue-set output 1 threshold 4 50 100 75 400
mls qos queue-set output 2 threshold 1 100 100 100 100
mls qos queue-set output 2 threshold 2 35 35 35 35
mls qos queue-set output 2 threshold 3 55 82 100 182
mls qos queue-set output 2 threshold 4 90 250 100 400
mls qos queue-set output 1 buffers 15 20 20 45
mls qos queue-set output 2 buffers 24 20 26 30
mls qos
...
!
class-map match-all AutoQoS-VoIP-RTP-Trust
match ip dscp ef
class-map match-all AutoQoS-VoIP-Control-Trust
match ip dscp cs3 af31
!
policy-map AutoQoS-Police-SoftPhone
class AutoQoS-VoIP-RTP-Trust
set dscp ef
police 320000 8000 exceed-action policed-dscp-transmit
class AutoQoS-VoIP-Control-Trust
set dscp cs3
police 32000 8000 exceed-action policed-dscp-transmit
!
policy-map AutoQoS-Police-CiscoPhone
class AutoQoS-VoIP-RTP-Trust
set dscp ef
police 320000 8000 exceed-action policed-dscp-transmit
class AutoQoS-VoIP-Control-Trust
set dscp cs3
police 32000 8000 exceed-action policed-dscp-transmit
...
!
interface GigabitEthernet2/0/4
switchport mode access
switchport port-security maximum 400
service-policy input AutoQoS-Police-SoftPhone
speed 100
duplex half
srr-queue bandwidth share 10 10 60 20
priority-queue out
auto qos voip cisco-softphone
!
interface GigabitEthernet2/0/5
switchport mode access
switchport port-security maximum 1999
speed 100
duplex full
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
!
interface GigabitEthernet2/0/6
switchport trunk encapsulation dot1q
switchport trunk native vlan 2
switchport mode access
speed 10
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
!
interface GigabitEthernet4/0/1
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
mls qos trust device cisco-phone
service-policy input AutoQoS-Police-CiscoPhone
<output truncated>
This is an example of output from the show auto qos interface interface-id command when the auto qos voip cisco-phone interface configuration command is entered:
Switch# show auto qos interface Gigabitethernet1/0/2
auto qos voip cisco-softphone
This is an example of output from the show auto qos command when auto-QoS is disabled on the switch:
Switch# show auto qos
AutoQoS not enabled on any interface
This is an example of output from the show auto qos interface interface-id command when auto-QoS is disabled on an interface:
Switch# show auto qos interface gigabitethernet3/0/1
AutoQoS is disabled
Related Commands
|
|
---|---|
auto qos voip |
Automatically configures QoS for VoIP within a QoS domain. |
debug auto qos |
Enables debugging of the auto-QoS feature. |
show boot
Use the show boot privileged EXEC command to display the settings of the boot environment variables.
show boot
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Examples
This is an example of output from the show boot command. Table 2-29 describes each field in the display.
Switch# show boot
BOOT path-list :flash:/image
Config file :flash:/config.text
Private Config file :flash:/private-config.text
Enable Break :no
Manual Boot :yes
HELPER path-list :
Auto upgrade :yes
-------------------
For switch stacks, information is shown for each switch in the stack.
Only Catalyst 2960-S switches running the LAN base image support switch stacks.
Related Commands
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
Syntax Description
interface-id |
Specify the interface on which TDR was run. |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
Examples
This is an example of output from the show cable-diagnostics tdr interface interface-id command:
Switch# show cable-diagnostics tdr interface gigabitethernet1/0/2
TDR test last run on: March 01 20:15:40
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/2 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 2-30 lists the descriptions of the fields in the show cable-diagnostics tdr command output.
This is an example of output from the show interfaces interface-id command when TDR is running:
Switch# show interfaces gigabitethernet1/01/2
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 gigabitethernet1/01/2
% TDR test was never issued on Gi1/0/2
If an interface does not support TDR, this message appears:
% TDR test is not supported on switch 1
Related Commands
|
|
---|---|
test cable-diagnostics tdr |
Enables and runs TDR on an interface. |
show cisp
Use the show cisp privileged EXEC command to display CISP information for a specified interface.
show cisp {[interface interface-id] | clients | summary}
Syntax Description
Command Modes
Global configuration
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Examples
This example shows output from the show cisp interface command:
WS-C3750E-48TD#show cisp interface fast 0
CISP not enabled on specified interface
This example shows output from the show cisp summary command:
CISP is not running on any interface
Related Commands
|
|
---|---|
dot1x credentials profile |
Configure a profile on a supplicant switch |
cisp enable |
Enable Client Information Signalling Protocol (CISP) |
show class-map
Use the show class-map EXEC command to display quality of service (QoS) class maps, which define the match criteria to classify traffic.
show class-map [class-map-name]
Syntax Description
class-map-name |
(Optional) Display the contents of the specified class map. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show class-map command:
Switch# show class-map
Class Map match-all videowizard_10-10-10-10 (id 2)
Match access-group name videowizard_10-10-10-10
Class Map match-any class-default (id 0)
Match any
Class Map match-all dscp5 (id 3)
Match ip dscp 5
Related Commands
|
|
---|---|
class-map |
Creates a class map to be used for matching packets to the class whose name you specify. |
match (class-map configuration) |
Defines the match criteria to classify traffic. |
show cluster
Use the show cluster 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
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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 stack or 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.

Note Stacking is supported only on Catalyst 2960-S switches.
Examples
This is an example of output when the show cluster command is entered on the 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
show cluster candidates
Use the show cluster candidates EXEC command to display a list of candidate switches.
show cluster candidates [detail | mac-address H.H.H.]
Syntax Description
detail |
(Optional) Display detailed information for all candidates. |
mac-address H.H.H. |
(Optional) MAC address of the cluster candidate. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
This command is available only on the cluster command switch stack or cluster command switch.

Note Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
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.
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: Gi6/0/1 FEC number:
Upstream port: GI6/0/11 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
|
|
---|---|
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]
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. |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
This command is available only on the cluster command switch stack or cluster command switch.

Note Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
If the cluster has no members, this command displays an empty line at the prompt.
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: Gi6/0/1 FEC number:
Upstream port: GI6/0/11 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: Gi6/0/1 FEC number:
Upstream port: Fa6/0/11 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
|
|
---|---|
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
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch.
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
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]
Syntax Description
Command Modes
Privileged EXEC (only supported with the interface-id keywords in user EXEC mode)
Command History
|
|
---|---|
12.2(25)FX |
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.
Examples
This is an example of output from the show controllers ethernet-controller command for an interface. Table 2-31 lists the Transmit fields, and Table 2-32 lists the Receive fields.
Switch# show controllers ethernet-controller gigabitethernet6/0/1
Transmit GigabitEthernet6/0/1 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
|
|
---|---|
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 |
This is an example of output from the show controllers ethernet-controller phy command for a specific interface:
Switch# show controllers ethernet-controller gigabitethernet1/0/2 phy
GigabitEthernet1/0/2 (gpn: 2, port-number: 2)
-----------------------------------------------------------
============================================================
Port Conf-Media Active-Media Attached
------- ------------ ------------ --------------------------
Gi1/0/1 auto-select none 0 -Not Present
Gi1/0/2 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
show controllers ethernet-controller stack port
To display stack port counters (or per-interface and per-stack port send and receive statistics from the hardware, use the show controllers ethernet-controller stack port privileged EXEC command.
show controllers ethernet-controller stackport [stack-port-number]
Syntax Description
stack-port-number |
The stack port number of the interface. The range is from 1 to 2. If no stack port number is provided, information for both stack ports appears. |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(53)SE1 |
This command was introduced. |
Usage Guidelines
To display stack port information for both stack ports on the specified interface, enter the show controllers ethernet-controller stackport privileged EXEC command without specifying a stack port number. Use this command to display the counters on various packet types sent on the stack port. To clear stack port and Ethernet counters, enter the clear controllers ethernet-controllers privileged EXEC command.

Note This command is supported only on the Catalyst 2960-S switches running the LAN base image.
Examples
This is an example of output from the show controllers ethernet-controller stackport command for stack port 1. Table 2-31 lists the Transmit FastEthernet0 fields, and Table 2-32 lists the Receive fields.
switch# show controllers ethernet-controller stack port 1
Transmit StackPort1 Receive
13226803644 Bytes 10704476071 Bytes
27647287 Unicast frames 20878836 Unicast frames
12728665 Multicast frames 10258136 Multicast frames
0 Broadcast frames 0 Broadcast frames
0 Too old frames 6287969588 Unicast bytes
0 Deferred frames 3233301547 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 22103015 65 to 127 byte frames
0 9 collision frames 685 128 to 255 byte frames
0 10 collision frames 5778 256 to 511 byte frames
0 11 collision frames 5703871 512 to 1023 byte frames
0 12 collision frames 3323623 1024 to 1518 byte frames
0 13 collision frames 0 Overrun frames
0 14 collision frames 0 Pause frames
0 15 collision frames
0 Excessive collisions 0 Symbol error frames
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
30164543 127 byte frames
4302 255 byte frames 0 Too old frames
5814 511 byte frames 0 Valid oversize frames
5790695 1023 byte frames 0 System FCS error frames
4410598 1518 byte frames 0 RxPortFifoFull drop frame
0 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
Related Commands
show controllers power inline
Use the show controllers power inline command in EXEC mode to display the values in the registers of the specified Power over Ethernet (PoE) controller.
show controllers power inline [instance] [module switch-number]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(44)SE |
This command was introduced. |
Usage Guidelines
The instance range is 0 to 1. For instances other than 0 to 1, the switches provides no output.
Though visible on all switches, this command is valid only for PoE switches. It provides no information for switches that do not support PoE.
The output provides information that might be useful for Cisco technical support representatives troubleshooting the switch.

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show controllers power inline command on a Catalyst 2960 or 2960-S switch:
Switch# show controllers power inline
Alchemy instance 0, address 0
Pending event flag :N N N N N N N N N N N N
Current State :00 05 10 51 61 11
Current Event :00 01 00 10 40 00
Timers :00 C5 57 03 12 20 04 B2 05 06 07 07
Error State :00 00 00 00 10 00
Error Code :00 00 00 00 00 00 00 00 00 00 00 00
Power Status :N Y N N Y N N N N N N N
Auto Config :N Y Y N Y Y Y Y Y Y Y Y
Disconnect :N N N N N N N N N N N N
Detection Status :00 00 00 30 00 00
Current Class :00 00 00 30 00 00
Tweetie debug :00 00 00 00
POE Commands pending at sub:
Command 0 on each port :00 00 00 00 00 00
Command 1 on each port :00 00 00 00 00 00
Command 2 on each port :00 00 00 00 00 00
Command 3 on each port :00 00 00 00 00 00
Related Commands
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]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX12.2(25)FX |
This command was introduced. |
Usage Guidelines
This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch.
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
show controllers utilization
Use the show controllers utilization command in EXEC mode to display bandwidth utilization on the switch or specific ports.
show controllers [interface-id] utilization
Syntax Description
interface-id |
(Optional) ID of the switch interface. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Examples
This is an example of output from the show controllers utilization command.
Switch# show controllers utilization
Port Receive Utilization Transmit Utilization
Fa1/0/1 0 0
Fa1/0/2 0 0
Fa1/0/3 0
Fa1/0/4 0 0
Fa1/0/5 0 0
Fa1/0/6 0 0
Fa1/0/7 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 gigabitethernet1/0/1 utilization
Receive Bandwidth Percentage Utilization : 0
Transmit Bandwidth Percentage Utilization : 0
Related Commands
|
|
---|---|
show controllers ethernet-controller |
Displays the interface internal registers. |
show diagnostic
Use the show diagnostic command in EXEC mode to view the test results of the online diagnostics and to list the supported test suites.
show diagnostic content switch [num | all]
show diagnostic post
show diagnostic result switch [num | all] [detail | test {test-id | test-id-range | all} [detail]]
show diagnostic schedule switch [num | all]
show diagnostic status
show diagnostic switch [num | all] [detail]
Syntax Description
Defaults
This command has no default settings.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(53)SE1 |
This command was introduced. |
Usage Guidelines
If you do not enter a switch num, information for all switches is displayed.
In the command output, the possible testing results are as follows:
•Passed (.)
•Failed (F)
•Unknown (U)

Note This command is supported only on Catalyst 2960-S switches running the LAN base image.
Examples
This example shows how to display the online diagnostics that are configured on a switch:
Switch# show diagnostic content switch 3
Switch 3:
Diagnostics test suite attributes:
B/* - Basic ondemand test / NA
P/V/* - Per port test / Per device test / NA
D/N/* - Disruptive test / Non-disruptive test / NA
S/* - Only applicable to standby unit / NA
X/* - Not a health monitoring test / NA
F/* - Fixed monitoring interval test / NA
E/* - Always enabled monitoring test / NA
A/I - Monitoring is active / Monitoring is inactive
R/* - Switch will reload after test list completion / NA
P/* - will partition stack / NA
Test Interval Thre-
ID Test Name attributes day hh:mm:ss.ms shold
==== ================================== ============ =============== =====
1) TestPortAsicStackPortLoopback B*N****A** 000 00:01:00.00 n/a
2) TestPortAsicLoopback B*D*X**IR* not configured n/a
3) TestPortAsicCam B*D*X**IR* not configured n/a
4) TestPortAsicRingLoopback B*D*X**IR* not configured n/a
5) TestMicRingLoopback B*D*X**IR* not configured n/a
6) TestPortAsicMem B*D*X**IR* not configured n/a
This example shows how to display the online diagnostic results for a switch:
Switch# show diagnostic result switch 1
Switch 1: SerialNo :
Overall diagnostic result: PASS
Test results: (. = Pass, F = Fail, U = Untested)
1) TestPortAsicStackPortLoopback ---> .
2) TestPortAsicLoopback ------------> .
3) TestPortAsicCam -----------------> .
4) TestPortAsicRingLoopback --------> .
5) TestMicRingLoopback -------------> .
6) TestPortAsicMem -----------------> .
This example shows how to display the online diagnostic test status:
Switch# show diagnostic status
<BU> - Bootup Diagnostics, <HM> - Health Monitoring Diagnostics,
<OD> - OnDemand Diagnostics, <SCH> - Scheduled Diagnostics
====== ================================= =============================== ======
Card Description Current Running Test Run by
------ --------------------------------- --------------------- ------
1 N/A N/A
2 TestPortAsicStackPortLoopback <OD>
TestPortAsicLoopback <OD>
TestPortAsicCam <OD>
TestPortAsicRingLoopback <OD>
TestMicRingLoopback <OD>
TestPortAsicMem <OD>
3 N/A N/A
4 N/A N/A
====== ================================= =============================== ======
Switch#
This example shows how to display the online diagnostic test schedule for a switch:
Switch# show diagnostic schedule switch 1
Current Time = 14:39:49 PST Tue Jul 5 2005
Diagnostic for Switch 1:
Schedule #1:
To be run daily 12:00
Test ID(s) to be executed: 1.
Related Commands
show dot1x
Use the show dot1x command in EXEC mode 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]]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
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)
Examples
This is an example of output from the show dot1x 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 command:
Switch# show dot1x all
Sysauthcontrol Enabled
Dot1x Protocol Version 2
Critical Recovery Delay 100
Critical EAPOL Disabled
Dot1x Info for GigabitEthernet1/0/1
-----------------------------------
PAE = AUTHENTICATOR
PortControl = AUTO
ControlDirection = Both
HostMode = SINGLE_HOST
Violation Mode = PROTECT
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 command:
Interface PAE Client Status
--------------------------------------------------------
Gi2/0/1 AUTH none UNAUTHORIZED
Gi2/0/2 AUTH 00a0.c9b8.0072 AUTHORIZED
Gi0/3 AUTH none UNAUTHORIZED
This is an example of output from the show dot1x interface interface-id command:
Switch# show dot1x interface gigabitethernet1/0/2
Dot1x Info for GigabitEthernet1/0/2
-----------------------------------
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 command:
Switch# show dot1x interface gigabitethernet0/2 details
Dot1x Info for GigabitEthernet1/0/2
-----------------------------------
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 gigabitethernet1/0/1 details
Dot1x Info for GigabitEthernet1/0/1
-----------------------------------
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 2-36 describes the fields in the display.
Switch# show dot1x interface gigabitethernet1/0/2 statistics
Dot1x Authenticator Port Statistics for GigabitEthernet1/0/2
--------------------------------------------
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
Related Commands
|
|
---|---|
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]
Syntax Description
interface interface-id |
(Optional) Display port security settings for the specified interface. Valid interfaces include physical ports (including type, stack member, module, and port number). |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
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 gigabitethernet1/0/1
DTP information for GigabitEthernet1/0/1:
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
|
|
---|---|
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]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)SEE |
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.
Examples
This is an example of output from the show eap registrations 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 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 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 gigabitethernet1/0/1
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
|
|
---|---|
clear eap sessions |
Clears EAP session information for the switch or for the specified port. |
show env
Use the show env command in EXEC mode to show fan, temperature, redundant power system (RPS) availability, and power information for the switch (standalone switch, stack master, or stack member).
show env {all | fan | power | rps | stack [switch-number] | temperature }
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
Use the session privileged EXEC command to access information from a specific switch other than the master.
Use the show env stack [switch-number] command to display information about any switch in the stack from any member switch.
Use with the stack keyword to show all information for the stack or for a specified switch in the stack.

Note Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
Examples
This is an example of output from the show env all command entered from the master switch or a standalone switch:
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
This is an example of output from the show env stack command:
Switch# show env stack
SWITCH: 1
FAN is OK
TEMPERATURE is OK
POWER is OK
RPS is NOT PRESENT
SWITCH: 2
FAN is OK
TEMPERATURE is OK
POWER is OK
RPS is NOT PRESENT
SWITCH: 3
FAN is OK
TEMPERATURE is OK
POWER is OK
RPS is NOT PRESENT
This is an example of output from the show env stack command on a Catalyst 2960-S switch:
Switch# show env stack
SWITCH: 1
FAN is OK
TEMPERATURE is OK
Temperature Value: 32 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 49 Degree Celsius
Red Threshold : 59 Degree Celsius
POWER is OK
RPS is NOT PRESENT
This example shows how to display information about stack member 3 from the master switch:
Switch# show env stack 3
SWITCH: 3
FAN is OK
TEMPERATURE is OK
POWER is OK
RPS is NOT PRESENT
show errdisable detect
Use the show errdisable detect command in EXEC mode to display error-disabled detection status.
show errdisable detect
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
A displayed gbic-invalid
error reason refers to an invalid small form-factor pluggable (SFP) module.
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
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
show errdisable flap-values
Use the show errdisable flap-values command in EXEC mode to display conditions that cause an error to be recognized for a cause.
show errdisable flap-values
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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
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
show errdisable recovery
Use the show errdisable recovery command in EXEC mode to display the error-disabled recovery timer information.
show errdisable recovery
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
A gbic-invalid error-disable reason refers to an invalid small form-factor pluggable (SFP) module interface.
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
arp-inspection Disabled
loopback Disabled
Timer interval:300 seconds
Interfaces that will be enabled at the next timeout:
Interface Errdisable reason Time left(sec)
--------- ----------------- --------------
Gi
0/2 link-flap 279

Note Though visible in the output, the unicast-flood field is not valid.
Related Commands
show etherchannel
Use the show etherchannel command in EXEC mode 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}
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
If you do not specify a channel-group, all channel groups 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: Gi1/0/1
------------
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
Gi1/0/1 SA bndl 32768 0x1 0x1 0x101 0x3D
Gi1/0/2 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 Gi1/0/1 Active 0
0 00 Gi1/0/2 Active 0
0 00 Gi0/1 Active 0
0 00 Gi0/2 Active 0
Time since last port bundled: 01d:20h:20m:20s Gi1/0/2
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 Gi1/0/1(P) Gi1/0/2(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 Gi1/0/1 Active 0
0 00 Gi1/0/2 Active 0
Time since last port bundled: 01d:20h:24m:44s Gi1/0/2
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
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
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
Use the show fallback profile privileged EXEC command to display profiles that are configured on the switch.
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
show flowcontrol
Use the show flowcontrol command in EXEC mode to display the flow control status and statistics.
show flowcontrol [interface interface-id | module number]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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. For a standalone switch, 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.
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
--------- -------- -------- -------- -------- ------- -------
Gi2/0/1 Unsupp. Unsupp. off off 0 0
Gi2/0/2 desired off off off 0 0
Gi2/0/3 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 gigabitethernet2/0/2
Port Send FlowControl Receive FlowControl RxPause TxPause
admin oper admin oper
--------- -------- -------- -------- -------- ------- -------
Gi2/0/2 desired off off off 0 0
Related Commands
|
|
---|---|
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]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
The show interfaces capabilities command with different keywords has these results:
•Use the show interfaces capabilities module number command to display the capabilities of all interfaces on that switch in the stack. If there is no switch with that module number in the stack, there is no output

Note Stacking is supported only on Catalyst 2960-S switches.
•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 or in the stack.
On Catalyst 2960-S switches running the LAN base image, use the show interfaces switchport module number command to display the switch port characteristics of all interfaces on that switch in the stack. If there is no switch with that module number in the stack, there is no output.

Note On all other Catalyst 2960 switches, use 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.
Examples
This is an example of output from the show interfaces command for an interface on stack member 3:
Switch# show interfaces gigabitethernet3/0/2
GigabitEthernet3/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.
GigabitEthernet1/0/1
Protocol Pkts In Chars In Pkts Out Chars Out
No traffic sent or received on this interface.
GigabitEthernet1/0/2
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 gigabitethernet1/0/2 capabilities
GigabitEthernet1/0/2
Model: WS-C2960G-24TC-L
Type: 10/100/1000BaseTX
Speed: 10,100,1000,auto
Duplex: full,auto
Trunk encap. type: 802.1Q,ISL
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 gigabitethernet1/0/2 description
Interface Status Protocol Description
Gi1/0/2 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 gigibitethernet1/0/2 pruning
Port Vlans pruned for lack of request by neighbor
Gi1/0/2 3,4
Port Vlans traffic requested of neighbor
Gi1/0/2 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
Fa1/0/1 connected routed a-half a-100 10/100BaseTX
Fa1/0/2 notconnect 121,40 auto auto 10/100BaseTX
Fa1/0/3 notconnect 1 auto auto 10/100BaseTX
Fa1/0/4 notconnect 18 auto auto Not Present
Fa1/0/5 connected 121 a-full a-1000 10/100BaseTX
Fa1/0/6 connected 122,11 a-full a-1000 10/100BaseTX
<output truncated>
Gi1/0/1 notconnect 1 auto auto 10/100/1000BaseTX
Gi1/0/2 notconnect 1 auto auto unsupported
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
Gi2/0/26 err-disabled gbic-invalid
This is an example of output from the show interfaces switchport command for a port. Table 2-37 describes the fields in the display.

Note Private VLANs are not supported, so those fields are not applicable.
Switch# show interfaces gigabitethernet1/0/1 switchport
Name: Gi1/0/1
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
1This 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
--------------------------------------------------------------
Fa1/0/1 Fa1/0/2 Active Up/Backup Standby
Fa3/0/3 Fa4/0/5 Active Down/Backup Up
Po1 Po2 Active Standby/Backup Up
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 2/0/6
Switch(config-if)#switchport backup interface gigabitEthernet 2/0/8 prefer vlan 60,100-120
When both interfaces are up, Gi2/0/8 forwards traffic for VLANs 60, 100 to 120, and Gi2/0/6 forwards traffic for VLANs 1 to 50.
Switch#show interfaces switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet2/0/6 GigabitEthernet2/0/8 Active Down/Backup Up
Vlans on Interface Gi 2/0/6: 1-50
Vlans on Interface Gi 2/0/8: 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 Gi2/0/6 goes down, Gi2/0/8 carries all VLANs of the Flex Link pair.
Switch#show interfaces switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet2/0/6 GigabitEthernet2/0/8 Active Down/Backup Up
Vlans on Interface Gi 2/0/6:
Vlans on Interface Gi 2/0/8: 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 Gi2/0/6 comes up, then VLANs preferred on this interface are blocked on the peer interface Gi2/0/8 and forwarded on Gi2/0/6.
Switch#show interfaces switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
------------------------------------------------------------------------
GigabitEthernet2/0/6 GigabitEthernet2/0/8 Active Down/Backup Up
Vlans on Interface Gi 2/0/6: 1-50
Vlans on Interface Gi 2/0/8: 60, 100-120
This is an example of output from the show interfaces interface-id pruning command:
Switch# show interfaces gigibitethernet1/0/2 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 gigabitethernet1/0/2 trunk
Port Mode Encapsulation Status Native vlan
Gi1/0/1 auto negotiate trunking 1
Port Vlans allowed on trunk
Gi1/0/1 1-4094
Port Vlans allowed and active in management domain
Gi1/0/1 1-4
Port Vlans in spanning tree forwarding state and not pruned
Gi1/0/1 1-4
This is an example of output from the show interfaces interface-id transceiver properties command:
Switch# show interfaces gigabitethernet1/0/2 transceiver properties
Name : Gi1/0/2
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 gigabitethernet2/0/3 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)
------- ------------------ ---------- --------- --------- ---------
Gi2/0/3 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)
------- --------------- ---------- --------- --------- ---------
Gi2/0/3 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)
------- ----------------- ---------- --------- --------- ---------
Gi2/0/3 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)
------- ----------------- ---------- --------- --------- ---------
Gi2/0/3 -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)
------- ----------------- ---------- --------- --------- ---------
Gi2/0/3 N/A ( -0.0) -- -0.0 -0.0 -0.0 -0.0
Related Commands
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 | module switch- number | protocol status | trunk]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
If you do not enter any keywords, all counters for all interfaces are included.

Note Though visible in the command-line help string, the vlan vlan-id keyword is not supported.
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
Gi1/0/1 0 0 0 0
Gi1/0/2 0 0 0 0
<output truncated>
This is an example of partial output from the show interfaces counters module command for stack member 2. It displays all counters for the specified switch in the stack.
Switch# show interfaces counters module 2
Port InOctets InUcastPkts InMcastPkts InBcastPkts
Gi2/0/1 520 2 0 0
Gi2/0/2 520 2 0 0
Gi2/0/3 520 2 0 0
Gi2/0/4 520 2 0 0
Gi2/0/5 520 2 0 0
Gi2/0/6 520 2 0 0
Gi2/0/7 520 2 0 0
Gi2/0/8 520 2 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
FastEthernet1/0/1: Other, IP, ARP, CDP
FastEthernet1/0/2: Other, IP
FastEthernet1/0/3: Other, IP
FastEthernet1/0/4: Other, IP
FastEthernet1/0/5: Other, IP
FastEthernet1/0/6: Other, IP
FastEthernet1/0/7: Other, IP
FastEthernet1/0/8: Other, IP
FastEthernet1/0/9: Other, IP
FastEthernet1/0/10: 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
Gi1/0/1 0 0 0
Gi1/0/2 0 0 0
Gi1/0/3 80678 4155 0
Gi1/0/4 82320 126 0
Gi1/0/5 0 0 0
<output truncated>
Related Commands
|
|
---|---|
show interfaces |
Displays additional interface characteristics. |
show inventory
Use the show inventory command in EXEC mode to display product identification (PID) information for the hardware.
show inventory [entity-name | raw]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
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 arp inspection
Use the show ip arp inspection privileged EXEC command to display the configuration and the operating state of dynamic Address Resolution Protocol (ARP) inspection or the status of this feature for all VLANs or for the specified interface or VLAN.
show ip arp inspection [interfaces [interface-id] | log | statistics [vlan vlan-range] | vlan vlan-range]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Examples
This is an example of output from the show ip arp inspection command
Switch# show ip arp inspection
Source Mac Validation : Disabled
Destination Mac Validation : Disabled
IP Address Validation : Enabled
Vlan Configuration Operation ACL Match Static ACL
---- ------------- --------- --------- ----------
1 Enabled Active deny-all No
Vlan ACL Logging DHCP Logging Probe Logging
---- ----------- ------------ -------------
1 Acl-Match All Permit
Vlan Forwarded Dropped DHCP Drops ACL Drops
---- --------- ------- ---------- ---------
1 0 0 0 0
Vlan DHCP Permits ACL Permits Probe Permits Source MAC Failures
---- ------------ ----------- ------------- -------------------
1 0 0 0 0
Vlan Dest MAC Failures IP Validation Failures Invalid Protocol Data
---- ----------------- ---------------------- ---------------------
1 0 0 0
This is an example of output from the show ip arp inspection interfaces command:
Switch# show ip arp inspection interfaces
Interface Trust State Rate (pps) Burst Interval
--------------- ----------- ---------- --------------
Gi1/0/1 Untrusted 15 1
Gi1/0/2 Untrusted 15 1
Gi1/0/3 Untrusted 15 1
This is an example of output from the show ip arp inspection interfaces interface-id command:
Switch# show ip arp inspection interfaces gigabitethernet1/0/1
Interface Trust State Rate (pps) Burst Interval
--------------- ----------- ---------- --------------
Gi1/0/1 Untrusted 15 1
This is an example of output from the show ip arp inspection log command. It shows the contents of the log buffer before the buffers are cleared:
Switch# show ip arp inspection log
Total Log Buffer Size : 32
Syslog rate : 10 entries per 300 seconds.
Interface Vlan Sender MAC Sender IP Num Pkts Reason Time
---------- ---- -------------- --------------- --------- ----------- ----
Gi1/0/1 5 0003.0000.d673 192.2.10.4 5 DHCP Deny 19:39:01 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.0000.d774 128.1.9.25 6 DHCP Deny 19:39:02 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.c940.1111 10.10.10.1 7 DHCP Deny 19:39:03 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.c940.1112 10.10.10.2 8 DHCP Deny 19:39:04 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.c940.1114 173.1.1.1 10 DHCP Deny 19:39:06 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.c940.1115 173.1.1.2 11 DHCP Deny 19:39:07 UTC Mon Mar 1 1993
Gi1/0/1 5 0001.c940.1116 173.1.1.3 12 DHCP Deny 19:39:08 UTC Mon Mar 1 1993
If the log buffer overflows, it means that a log event does not fit into the log buffer, and the display for the show ip arp inspection log privileged EXEC command is affected. A -- in the display appears in place of all data except the packet count and the time. No other statistics are provided for the entry. If you see this entry in the display, increase the number of entries in the log buffer, or increase the logging rate in the ip arp inspection log-buffer global configuration command.
This is an example of output from the show ip arp inspection statistics command. It shows the statistics for packets that have been processed by dynamic ARP inspection for all active VLANs.
Switch# show ip arp inspection statistics
Vlan Forwarded Dropped DHCP Drops ACL Drops
---- --------- ------- ---------- ---------
5 3 4618 4605 4
2000 0 0 0 0
Vlan DHCP Permits ACL Permits Source MAC Failures
---- ------------ ----------- -------------------
5 0 12 0
2000 0 0 0
Vlan Dest MAC Failures IP Validation Failures
---- ----------------- ----------------------
5 0 9
2000 0 0
For the show ip arp inspection statistics command, the switch increments the number of forwarded packets for each ARP request and response packet on a trusted dynamic ARP inspection port. The switch increments the number of ACL or DHCP permitted packets for each packet that is denied by source MAC, destination MAC, or IP validation checks, and the switch increments the appropriate failure count.
This is an example of output from the show ip arp inspection statistics vlan 5 command. It shows statistics for packets that have been processed by dynamic ARP for VLAN 5.
Switch# show ip arp inspection statistics vlan 5
Vlan Forwarded Dropped DHCP Drops ACL Drops
---- --------- ------- ---------- ---------
5 3 4618 4605 4
Vlan DHCP Permits ACL Permits Source MAC Failures
---- ------------ ----------- -------------------
5 0 12 0
Vlan Dest MAC Failures IP Validation Failures Invalid Protocol Data
---- ----------------- ---------------------- ---------------------
5 0 9 3
This is an example of output from the show ip arp inspection vlan 5 command. It shows the configuration and the operating state of dynamic ARP inspection for VLAN 5.
Switch# show ip arp inspection vlan 5
Source Mac Validation :Enabled
Destination Mac Validation :Enabled
IP Address Validation :Enabled
Vlan Configuration Operation ACL Match Static ACL
---- ------------- --------- --------- ----------
5 Enabled Active second No
Vlan ACL Logging DHCP Logging
---- ----------- ------------
5 Acl-Match All
Related Commands
show ip dhcp snooping
Use the show ip dhcp snooping command in EXEC mode to display the DHCP snooping configuration.
show ip dhcp snooping
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Examples
This is an example of output from the show ip dhcp snooping command:
Switch# show ip dhcp snooping
Switch DHCP snooping is enabled
DHCP snooping is configured on following VLANs:
40-42
Insertion of option 82 is enabled
Option 82 on untrusted port is allowed
Verification of hwaddr field is enabled
Interface Trusted Rate limit (pps)
------------------------ ------- ----------------
GigabitEthernet1/0/1 yes unlimited
GigabitEthernet1/0/2 yes unlimited
GigabitEthernet2/0/3 no 2000
GigabitEthernet2/0/4 yes unlimited
Related Commands
|
|
---|---|
show ip dhcp snooping binding |
Displays the DHCP snooping binding information. |
show ip dhcp snooping binding
Use the show ip dhcp snooping binding command in EXEC mode to display the DHCP snooping binding database and configuration information for all interfaces on a switch.
show ip dhcp snooping binding [ip-address] [mac-address] [interface interface-id] [vlan vlan-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
The show ip dhcp snooping binding command output shows only the dynamically configured bindings. Use the show ip source binding privileged EXEC command to display the dynamically and statically configured bindings in the DHCP snooping binding database.
If DHCP snooping is enabled and an interface changes to the down state, the switch does not delete the statically configured bindings.
Examples
This example shows how to display the DHCP snooping binding entries for a switch:
Switch# show ip dhcp snooping binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9837 dhcp-snooping 20 GigabitEthernet2/0/1
00:D0:B7:1B:35:DE 10.1.2.151 237 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 2
This example shows how to display the DHCP snooping binding entries for a specific IP address:
Switch# show ip dhcp snooping binding 10.1.2.150
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9810 dhcp-snooping 20 GigabitEthernet2/0/1
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries for a specific MAC address:
Switch# show ip dhcp snooping binding 0102.0304.0506
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9788 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries on a port:
Switch# show ip dhcp snooping binding interface gigabitethernet2/0/2
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
00:30:94:C2:EF:35 10.1.2.151 290 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries on VLAN 20:
Switch# show ip dhcp snooping binding vlan 20
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9747 dhcp-snooping 20 GigabitEthernet2/0/1
00:00:00:00:00:02 10.1.2.151 65 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 2
Table 2-38 describes the fields in the show ip dhcp snooping binding command output:
Related Commands
|
|
---|---|
ip dhcp snooping binding |
Configures the DHCP snooping binding database |
show ip dhcp snooping |
Displays the DHCP snooping configuration. |
show ip dhcp snooping database
Use the show ip dhcp snooping database command in EXEC mode to display the status of the DHCP snooping binding database agent.
show ip dhcp snooping database [detail]
Syntax Description
detail |
(Optional) Display detailed status and statistics information. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Examples
This is an example of output from the show ip dhcp snooping database command:
Switch# show ip dhcp snooping database
Agent URL :
Write delay Timer : 300 seconds
Abort Timer : 300 seconds
Agent Running : No
Delay Timer Expiry : Not Running
Abort Timer Expiry : Not Running
Last Succeded Time : None
Last Failed Time : None
Last Failed Reason : No failure recorded.
Total Attempts : 0 Startup Failures : 0
Successful Transfers : 0 Failed Transfers : 0
Successful Reads : 0 Failed Reads : 0
Successful Writes : 0 Failed Writes : 0
Media Failures : 0
This is an example of output from the show ip dhcp snooping database detail command:
Switch# show ip dhcp snooping database detail
Agent URL : tftp://10.1.1.1/directory/file
Write delay Timer : 300 seconds
Abort Timer : 300 seconds
Agent Running : No
Delay Timer Expiry : 7 (00:00:07)
Abort Timer Expiry : Not Running
Last Succeded Time : None
Last Failed Time : 17:14:25 UTC Sat Jul 7 2001
Last Failed Reason : Unable to access URL.
Total Attempts : 21 Startup Failures : 0
Successful Transfers : 0 Failed Transfers : 21
Successful Reads : 0 Failed Reads : 0
Successful Writes : 0 Failed Writes : 21
Media Failures : 0
First successful access: Read
Last ignored bindings counters :
Binding Collisions : 0 Expired leases : 0
Invalid interfaces : 0 Unsupported vlans : 0
Parse failures : 0
Last Ignored Time : None
Total ignored bindings counters:
Binding Collisions : 0 Expired leases : 0
Invalid interfaces : 0 Unsupported vlans : 0
Parse failures : 0
Related Commands
show ip dhcp snooping statistics
Use the show ip dhcp snooping statistics command in EXEC mode to display DHCP snooping statistics in summary or detail form.
show ip dhcp snooping statistics [detail]
Syntax Description
detail |
(Optional) Display detailed statistics information. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(37)SE |
This command was introduced. |
Usage Guidelines
In a switch stack, all statistics are generated on the stack master. If a new stack master is elected, the statistics counters reset.
Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
Examples
This is an example of output from the show ip dhcp snooping statistics command:
Switch# show ip dhcp snooping statistics
Packets Forwarded = 0
Packets Dropped = 0
Packets Dropped From untrusted ports = 0
This is an example of output from the show ip dhcp snooping statistics detail command:
Switch# show ip dhcp snooping statistics detail
Packets Processed by DHCP Snooping = 0
Packets Dropped Because
IDB not known = 0
Queue full = 0
Interface is in errdisabled = 0
Rate limit exceeded = 0
Received on untrusted ports = 0
Nonzero giaddr = 0
Source mac not equal to chaddr = 0
Binding mismatch = 0
Insertion of opt82 fail = 0
Interface Down = 0
Unknown output interface = 0
Reply output port equal to input port = 0
Packet denied by platform = 0
Table 2-39 shows the DHCP snooping statistics and their descriptions:
Related Commands
|
|
---|---|
clear ip dhcp snooping |
Clears the DHCP snooping binding database, the DHCP snooping binding database agent statistics, or the DHCP snooping statistics counters. |
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]
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. |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
|
|
---|---|
ip igmp profile |
Configures the specified IGMP profile number. |
show ip igmp snooping
Use the show ip igmp snooping command in EXEC mode 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]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
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
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] [user] [vlan vlan-id [ip_address]]
Syntax Description
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
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
-------------------------------------------------------------
1 224.1.4.4 igmp Fa1/0/11
1 224.1.4.5 igmp Fa1/0/11
2 224.0.1.40 igmp v2 Fa1/0/15
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 Gi2/0/1, 1/0/15
104 224.1.4.3 igmp v2 Gi2/0/1, 1/0/15
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 Gi2/0/1, 1/0/15
Related Commands
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]
Syntax Description
vlan vlan-id |
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX12.2(25)FX |
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.
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 Gi
2/0/1(dynamic)
Related Commands
show ip igmp snooping querier
Use the show ip igmp snooping querier detail command in EXEC mode 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]]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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 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
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 Gi1/0/1
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 Fa8/0/1
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 Fa8/0/1
--------------------------------------------------------
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
show ip source binding
Use the show ip source binding command in EXEC mode to display the IP source bindings on the switch.
show ip source binding [ip-address] [mac-address] [dhcp-snooping | static] [interface interface-id] [vlan vlan-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Usage Guidelines
The show ip source binding command output shows the dynamically and statically configured bindings in the DHCP snooping binding database.
Use the show ip dhcp snooping binding privileged EXEC command to display only the dynamically configured bindings.
Examples
This is an example of output from the show ip source binding command:
Switch# show ip source binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
-------------- --------------- ---------- ------------- ---- --------------------
00:00:00:0A:00:0B 11.0.0.1 infinite static 10 GigabitEthernet1/0/1
00:00:00:0A:00:0A 11.0.0.2 10000 dhcp-snooping 10 GigabitEthernet1/0/1
Related Commands
|
|
---|---|
ip dhcp snooping binding |
Configures the DHCP snooping binding database. |
ip source binding |
Configures static IP source bindings on the switch. |
show ip verify source
Use the show ip verify source command in EXEC mode to display the IP source guard configuration on the switch or on a specific interface.
show ip verify source [interface interface-id]
Syntax Description
interface interface-id |
(Optional) Display IP source guard configuration on a specific interface. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(50)SE |
This command was introduced. |
Examples
This is an example of output from the show ip verify source command:
Switch# show ip verify source
Interface Filter-type Filter-mode IP-address Mac-address Vlan
--------- ----------- ----------- --------------- -------------- ---------
gi1/0/1 ip active 10.0.0.1 10
gi1/0/1 ip active deny-all 11-20
gi1/0/2 ip inactive-trust-port
gi1/0/3 ip inactive-no-snooping-vlan
gi1/0/4 ip-mac active 10.0.0.2 aaaa.bbbb.cccc 10
gi1/0/4 ip-mac active deny-all deny-all 12-20
gi1/0/4 ip-mac active 11.0.0.1 aaaa.bbbb.cccd 11
gi1/0/4 ip-mac active deny-all deny-all 12-20
gi1/0/5 ip-mac active 10.0.0.3 permit-all 10
gi1/0/5 ip-mac active deny-all permit-all 11-20
In the previous example, this is the IP source guard configuration:
•On the Gigabit Ethernet 1 interface, DHCP snooping is enabled on VLANs 10 to 20. For VLAN 10, IP source guard with IP address filtering is configured on the interface, and a binding exists on the interface. For VLANs 11 to 20, the second entry shows that a default port access control lists (ACLs) is applied on the interface for the VLANs on which IP source guard is not configured.
•The Gigabit Ethernet 2 interface is configured as trusted for DHCP snooping.
•On the Gigabit Ethernet 3 interface, DHCP snooping is not enabled on the VLANs to which the interface belongs.
•On the Gigabit Ethernet 4 interface, IP source guard with source IP and MAC address filtering is enabled, and static IP source bindings are configured on VLANs 10 and 11. For VLANs 12 to 20, the default port ACL is applied on the interface for the VLANs on which IP source guard is not configured.
•On the Gigabit Ethernet 5 interface, IP source guard with source IP and MAC address filtering is enabled and configured with a static IP binding, but port security is disabled. The switch cannot filter source MAC addresses.
This is an example of output on an interface on which IP source guard is disabled:
Switch# show ip verify source gigabitethernet1/0/6
IP source guard is not configured on the interface gi1/0/6.
Related Commands
|
|
---|---|
ip verify source |
Enables IP source guard on an interface. |
show ipv6 mld snooping
Use the show ipv6 mld snooping command in EXEC mode to display IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping configuration of the switch or the VLAN.
show ipv6 mld snooping [vlan vlan-id]
Syntax Description
vlan vlan-id |
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(40)SE |
This command was introduced. |
Usage Guidelines
Use this command to display MLD snooping configuration for the switch or for a specific VLAN.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in MLD snooping.
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command and reload the switch (Catalyst 2960 switches only).

Note To use this command, the switch must be running the LAN Base image. A Catalyst 2960 switch must also have the dual IPv4 and IPv6 Switch Database Management (SDM) template configured (not required on Catalyst 2960-S switches).
Examples
This is an example of output from the show ipv6 mld snooping vlan command. It shows snooping characteristics for a specific VLAN.
Switch#
show ipv6 mld snooping vlan 100
Global MLD Snooping configuration:
-------------------------------------------
MLD snooping : Enabled
MLDv2 snooping (minimal) : Enabled
Listener message suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Robustness variable : 3
Last listener query count : 2
Last listener query interval : 1000
Vlan 100:
--------
MLD snooping : Disabled
MLDv1 immediate leave : Disabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
Robustness variable : 3
Last listener query count : 2
Last listener query interval : 1000
This is an example of output from the show ipv6 mld snooping command. It displays snooping characteristics for all VLANs on the switch.
Switch
#
show ipv6 mld snooping
Global MLD Snooping configuration:
-------------------------------------------
MLD snooping : Enabled
MLDv2 snooping (minimal) : Enabled
Listener message suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Robustness variable : 3
Last listener query count : 2
Last listener query interval : 1000
Vlan 1:
--------
MLD snooping : Disabled
MLDv1 immediate leave : Disabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
Robustness variable : 1
Last listener query count : 2
Last listener query interval : 1000
<output truncated>
Vlan 951:
--------
MLD snooping : Disabled
MLDv1 immediate leave : Disabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
Robustness variable : 3
Last listener query count : 2
Last listener query interval : 1000
Related Commands
show ipv6 mld snooping address
Use the show ipv6 mld snooping address command in EXEC mode to display all or specified IP version 6 (IPv6) multicast address information maintained by Multicast Listener Discovery (MLD) snooping.
show ipv6 mld snooping address [[vlan vlan-id] [ipv6 address]] [vlan vlan-id] [count | dynamic | user]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(40)SE |
This command was introduced. |
Usage Guidelines
Use this command to display IPv6 multicast address information.
You can enter an IPv6 multicast address only after you enter a VLAN ID.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in MLD snooping.
Use the dynamic keyword to display information only about groups that are learned. Use the user keyword to display information only about groups that have been configured.
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command and reload the switch (Catalyst 2960 switches only).

Note To use this command, the switch must be running the LAN Base image. A Catalyst 2960 switch must also have the dual IPv4 and IPv6 Switch Database Management (SDM) template configured (not required on Catalyst 2960-S switches).
Examples
This is an example of output from the show snooping address command:
Switch# show ipv6 mld snooping address
Vlan Group Type Version Port List
-------------------------------------------------------------
2 FF12::3 user Fa1/0/2, Gi2/0/2, Gi3/0/1,Gi3/0/3
This is an example of output from the show snooping address count command:
Switch# show ipv6 mld snooping address count
Total number of multicast groups: 2
This is an example of output from the show snooping address user command:
Switch# show ipv6 mld snooping address user
Vlan Group Type Version Port List
-------------------------------------------------------------
2 FF12::3 user v2 Fa1/0/2, Gi2/0/2, Gi3/0/1,Gi4/0/3
Related Commands
|
|
---|---|
ipv6 mld snooping vlan |
Configures IPv6 MLD snooping on a VLAN. |
sdm prefer |
Configures an SDM template to optimize system resources based on how the switch is being used. |
show ipv6 mld snooping mrouter
Use the show ipv6 mld snooping mrouter command in EXEC mode to display dynamically learned and manually configured IP version 6 (IPv6) Multicast Listener Discovery (MLD) router ports for the switch or a VLAN.
show ipv6 mld snooping mrouter [vlan vlan-id]
Syntax Description
vlan vlan-id |
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)SED |
This command was introduced. |
Usage Guidelines
Use this command to display MLD snooping router ports for the switch or for a specific VLAN.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in MLD snooping.
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command and reload the switch (Catalyst 2960 switches only).

Note To use this command, the switch must be running the LAN Base image. A Catalyst 2960 switch must also have the dual IPv4 and IPv6 Switch Database Management (SDM) template configured (not required on Catalyst 2960-S switches).
Examples
This is an example of output from the show ipv6 mld snooping mrouter command. It displays snooping characteristics for all VLANs on the switch that are participating in MLD snooping.
Switch# show ipv6 mld snooping mrouter
Vlan ports
---- -----
2 Gi1/0/11(dynamic)
72 Gi1/0/11(dynamic)
200 Gi1/0/11(dynamic)
This is an example of output from the show ipv6 mld snooping mrouter vlan command. It shows multicast router ports for a specific VLAN.
Switch# show ipv6 mld snooping mrouter vlan 100
Vlan ports
---- -----
2 Gi1/0/11(dynamic)
Related Commands
show ipv6 mld snooping querier
Use the show ipv6 mld snooping querier command in EXEC mode to display IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping querier-related information most recently received by the switch or the VLAN.
show ipv6 mld snooping querier [vlan vlan-id] [detail]
Syntax Description
vlan vlan-id |
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
detail |
(Optional) Display MLD snooping detailed querier information for the switch or for the VLAN. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(40)SE |
This command was introduced. |
Usage Guidelines
Use the show ipv6 mld snooping querier command to display the MLD version and IPv6 address of a detected device that sends MLD query messages, which is also called a querier. A subnet can have multiple multicast routers but has only one MLD querier. The querier can be a Layer 3 switch.
The show ipv6 mld snooping querier command output also shows the VLAN and 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 output of the show ipv6 mld snoop querier vlan command displays the information received in response to a query message from an external or internal querier. It does not display user-configured VLAN values, such as the snooping robustness variable on the particular VLAN. This querier information is used only on the MASQ message that is sent by the switch. It does not override the user-configured robustness variable that is used for aging out a member that does not respond to query messages.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in MLD snooping.
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command and reload the switch (Catalyst 2960 switches only).

Note To use this command, the switch must be running the LAN Base image. A Catalyst 2960 switch must also have the dual IPv4 and IPv6 Switch Database Management (SDM) template configured (not required on Catalyst 2960-S switches).
Examples
This is an example of output from the show ipv6 mld snooping querier command:
Switch#
show ipv6 mld snooping querier
Vlan IP Address MLD Version Port
-------------------------------------------------------------
2 FE80::201:C9FF:FE40:6000 v1 Gi0/1
This is an example of output from the show ipv6 mld snooping querier detail command:
Switch#
show ipv6 mld snooping querier detail
Vlan IP Address MLD Version Port
-------------------------------------------------------------
2 FE80::201:C9FF:FE40:6000 v1 Gi0/1
This is an example of output from the show ipv6 mld snooping querier vlan command:
Switch#
show ipv6 mld snooping querier vlan 2
IP address : FE80::201:C9FF:FE40:6000
MLD version : v1
Port : Gi3/0/1
Max response time : 1000s
Related Commands
show ipv6 route updated
Use the show ipv6 route updated command in EXEC mode to display the current contents of the IPv6 routing table.
show ipv6 route [protocol] updated [boot-up]{hh:mm | day{month [hh:mm]} [{hh:mm | day{month [hh:mm]}]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(40)SE |
This command was introduced. |
Usage Guidelines
Use the show ipv6 route privileged EXEC command to display the current contents of the IPv6 routing table.

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show ipv6 route updated rip command.
Switch#
show ipv6 route rip updated
IPv6 Routing Table - 12 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
IA - ISIS interarea, IS - ISIS summary
O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R 2001::/64 [120/2]
via FE80::A8BB:CCFF:FE00:8D01, GigabitEthernet0/1
Last updated 10:31:10 27 February 2007
R 2004::/64 [120/2]
via FE80::A8BB:CCFF:FE00:9001, GigabitEthernet0/2
Last updated 17:23:05 22 February 2007
R 4000::/64 [120/2]
via FE80::A8BB:CCFF:FE00:9001, GigabitEthernet0/3
Last updated 17:23:05 22 February 2007
R 5000::/64 [120/2]
via FE80::A8BB:CCFF:FE00:9001, GigabitEthernet0/4
Last updated 17:23:05 22 February 2007
R 5001::/64 [120/2]
via FE80::A8BB:CCFF:FE00:9001, GigabitEthernet0/5
Last updated 17:23:05 22 February 2007
Related Commands
|
|
---|---|
show ipv6 route |
Displays the current contents of the IPv6 routing table. |
show lacp
Use the show lacp command in EXEC mode to display Link Aggregation Control Protocol (LACP) channel-group information.
show lacp [channel-group-number] {counters | internal | neighbor | sys-id}
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
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.
Examples
This is an example of output from the show lacp counters command. Table 2-40 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
Gi2/0/1 19 10 0 0 0 0 0
Gi2/0/2 14 6 0 0 0 0 0
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
Gi2/0/1 SA bndl 32768 0x3 0x3 0x4 0x3D
Gi2/0/2 SA bndl 32768 0x3 0x3 0x5 0x3D
Table 2-41 describes the fields in the display:
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
Gi2/0/1 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
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
|
|
---|---|
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 link state group
Use the show link state group privileged EXEC command to display the link-state group information.
show link state group [number] [detail]
Syntax Description
number |
(Optional) Number of the link-state group. |
detail |
(Optional) Specify that detailed information appears. |
Defaults
There is no default.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(25)SEE |
This command was introduced. |
Usage Guidelines
Use the show link state group command to display the link-state group information. Enter this command without keywords to display information about all link-state groups. Enter the group number to display information specific to the group.
Enter the detail keyword to display detailed information about the group. The output for the show link state group detail command displays only those link-state groups that have link-state tracking enabled or that have upstream or downstream interfaces (or both) configured. If there is no link-state group configuration for a group, it is not shown as enabled or disabled.

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show link state group 1 command:
Switch
# show link state group 1
Link State Group: 1 Status: Enabled, Down
This is an example of output from the show link state group detail command:
Switch
# show link state group detail
(Up):Interface up (Dwn):Interface Down (Dis):Interface disabled
Link State Group: 1 Status: Enabled, Down Upstream Interfaces : Gi1/0/15(Dwn) Gi1/0/16(Dwn) Downstream Interfaces : Gi1/0/11(Dis) Gi1/0/12(Dis) Gi1/0/13(Dis) Gi1/0/14(Dis)
Link State Group: 2 Status: Enabled, Down Upstream Interfaces : Gi1/0/15(Dwn) Gi1/0/16(Dwn) Gi1/0/17(Dwn) Downstream Interfaces : Gi1/0/11(Dis) Gi1/0/12(Dis) Gi1/0/13(Dis) Gi1/0/14(Dis)
(Up):Interface up (Dwn):Interface Down (Dis):Interface disabled
Related Commands
show location
Use the show location command in EXEC mode to display location information for an endpoint.
show location admin-tag
show location civic-location {identifier id number | interface interface-id | static}
show location elin-location {identifier id number | interface interface-id | static}
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
Use the show location command to display location information for an endpoint.
Examples
This is an example of output from the show location civic-location command that displays location information for an interface:
Switch# show location civic interface gigibitethernet2/0/1
Civic location information
--------------------------
Identifier : 1
County : Santa Clara
Street number : 3550
Building : 19
Room : C6
Primary road name : Cisco Way
City : San Jose
State : CA
Country : US
This is an example of output from the show location civic-location command that displays all the civic location information:
Switch# show location civic-location static
Civic location information
--------------------------
Identifier : 1
County : Santa Clara
Street number : 3550
Building : 19
Room : C6
Primary road name : Cisco Way
City : San Jose
State : CA
Country : US
Ports : Gi0/1
--------------------------
Identifier : 2
Street number : 24568
Street number suffix : West
Landmark : Golden Gate Bridge
Primary road name : 19th Ave
City : San Francisco
Country : US
--------------------------
This is an example of output from the show location elin-location command that displays the
emergency location information:
Switch# show location elin-location identifier 1
Elin location information
--------------------------
Identifier : 1
Elin : 14085553881
Ports : Gi0/2
This is an example of output from the show location elin static command that displays all emergency
location information:
Switch# show location elin static
Elin location information
--------------------------
Identifier : 1
Elin : 14085553881
Ports : Gi0/2
--------------------------
Identifier : 2
Elin : 18002228999
--------------------------
Related Commands
show logging onboard
Use the show logging onboard privileged EXEC command to display the on-board failure logging (OBFL) information.
show logging onboard [module [switch-number]] {{clilog | environment | message | poe | temperature | uptime | voltage} [continuous | detail | summary] [start hh:mm:ss day month year] [end hh:mm:ss day month year]}
Syntax DescriptionT
Command Default
There is no default.
Command Modes
Privileged EXEC
Command History
|
|
---|---|
12.2(53)SE1 |
This command was introduced. |
Usage Guidelines
When OBFL is enabled, the switch records OBFL data in a continuous file that contains all of the data. The continuous file is circular. When the continuous file is full, the switch combines the data into a summary file, which is also known as a historical file. Creating the summary file frees up space in the continuous file so that the switch can write newer data to it.
If you enter the module keyword but do not enter the switch number, the switch displays OBFL information about the stack members that support OBFL.
Use the start and end keywords to display data collected only during a particular time period. When specifying the start and end times, follow these guidelines:
•hh:mm:ss—Enter the time as a 2-digit number for a 24-hour clock. Make sure to use the colons (:). For example, enter 13:32:45.
•day—Enter the day of the month. The range is from 1 to 31.
•month—Enter the month in upper case or lower case letters. You can enter the full name of the month, such as January or august, or the first three letters of the month, such as jan or Aug.
•year—Enter the year as a 4-digit number, such as 2008. The range is from 1993 to 2035.

Note This command is supported only on Catalyst 2960-S switches running the LAN Base image.
Examples
This is an example of output from the show logging onboard clilog continuous command:
Switch# show logging onboard clilog continuous
--------------------------------------------------------------------------------
CLI LOGGING CONTINUOUS INFORMATION
--------------------------------------------------------------------------------
MM/DD/YYYY HH:MM:SS COMMAND
--------------------------------------------------------------------------------
05/12/2006 15:33:17 show logging onboard temperature detail
05/12/2006 15:33:21 show logging onboard voltage detail
05/12/2006 15:33:32 show logging onboard poe detail
05/12/2006 16:14:09 show logging onboard temperature summary
...
<output truncated>
....
05/16/2006 13:07:53 no hw-module module logging onboard message level
05/16/2006 13:16:13 show logging onboard uptime continuous
05/16/2006 13:39:18 show logging onboard uptime summary
05/16/2006 13:45:57 show logging onboard clilog summary
--------------------------------------------------------------------------------
This is an example of output from the show logging onboard message command:
Switch# show logging onboard message
--------------------------------------------------------------------------------
ERROR MESSAGE SUMMARY INFORMATION
--------------------------------------------------------------------------------
Facility-Sev-Name | Count | Persistence Flag
MM/DD/YYYY HH:MM:SS
--------------------------------------------------------------------------------
No historical data to display
--------------------------------------------------------------------------------
This is an example of output from the show logging onboard poe continuous end 01:01:00 jan 2000 command on a switch:
Switch# show logging onboard poe continuous end 01:01:00 1 jan 2000
--------------------------------------------------------------------------------
POE CONTINUOUS INFORMATION
--------------------------------------------------------------------------------
Sensor | ID |
--------------------------------------------------------------------------------
Gi1/0/1 1
Gi1/0/2 2
Gi1/0/3 3
Gi1/0/4 4
...
<output truncated>
...
Gi1/0/21 21
Gi1/0/22 22
Gi1/0/23 23
Gi1/0/24 24
--------------------------------------------------------------------------------
Time Stamp |Sensor Watts
MM/DD/YYYY HH:MM:SS | Gi1/0/1 Gi1/0/2 Gi1/0/3 Gi1/0/4 Gi1/0/5 Gi1/0/6 Gi1/0/7 Gi1/0/8 Gi1/0/9 Gi1/0/10 Gi1/0/11 Gi1/0/12 Gi1/0/13 Gi1/0/14 Gi1/0/15 Gi1/0/16 Gi1/0/17 Gi1/0/18 Gi1/0/19 Gi1/0/20 Gi1/0/21 Gi1/0/22 Gi1/0/23 Gi1/0/24
--------------------------------------------------------------------------------
03/01/1993 00:04:03 0.000 0.000 0.000 0.000 0.000 0.000 0.0 00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
03/01/1993 00:05:03 0.000 1.862 0.000 1.862 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
--------------------------------------------------------------------------------
This is an example of output from the show logging onboard status command:
Switch# show logging onboard status
Devices registered with infra
Slot no.: 0 Subslot no.: 0, Device obfl0:
Application name clilog :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name environment :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name errmsg :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name poe :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name temperature :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name uptime :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
Application name voltage :
Path : obfl0:
CLI enable status : enabled
Platform enable status: enabled
This is an example of output from the show logging onboard temperature continuous command:
Switch# show logging onboard temperature continuous
--------------------------------------------------------------------------------
TEMPERATURE CONTINUOUS INFORMATION
--------------------------------------------------------------------------------
Sensor | ID |
--------------------------------------------------------------------------------
Board temperature 1
--------------------------------------------------------------------------------
Time Stamp |Sensor Temperature 0C
MM/DD/YYYY HH:MM:SS | 1 2 3 4 5 6 7 8 9 10 11 12
--------------------------------------------------------------------------------
05/12/2006 15:33:20 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 16:31:21 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 17:31:21 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 18:31:21 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 19:31:21 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 20:31:21 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 21:29:22 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 22:29:22 35 -- -- -- -- -- -- -- -- -- -- --
05/12/2006 23:29:22 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 00:29:22 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 01:29:22 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 02:27:23 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 03:27:23 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 04:27:23 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 05:27:23 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 06:27:23 35 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 07:25:24 36 -- -- -- -- -- -- -- -- -- -- --
05/13/2006 08:25:24 35 -- -- -- -- -- -- -- -- -- -- --
<output truncated>
This is an example of output from the show logging onboard uptime summary command:
Switch# show logging onboard uptime summary
--------------------------------------------------------------------------------
UPTIME SUMMARY INFORMATION
--------------------------------------------------------------------------------
First customer power on : 03/01/1993 00:03:50
Total uptime : 0 years 0 weeks 3 days 21 hours 55 minutes
Total downtime : 0 years 0 weeks 0 days 0 hours 0 minutes
Number of resets : 2
Number of slot changes : 1
Current reset reason : 0x0
Current reset timestamp : 03/01/1993 00:03:28
Current slot : 1
Current uptime : 0 years 0 weeks 0 days 0 hours 55 minutes
--------------------------------------------------------------------------------
Reset | |
Reason | Count |
--------------------------------------------------------------------------------
No historical data to display
--------------------------------------------------------------------------------
This is an example of output from the show logging onboard voltage summary command:
Switch# show logging onboard voltage summary
--------------------------------------------------------------------------------
VOLTAGE SUMMARY INFORMATION
--------------------------------------------------------------------------------
Number of sensors : 8
Sampling frequency : 60 seconds
Maximum time of storage : 3600 minutes
--------------------------------------------------------------------------------
Sensor | ID | Maximum Voltage
--------------------------------------------------------------------------------
12.00V 0 12.567
5.00V 1 5.198
3.30V 2 3.439
2.50V 3 2.594
1.50V 4 1.556
1.20V 5 1.239
1.00V 6 0.980
0.75V 7 0.768
--------------------------------------------------------------------------------
Nominal Range Sensor ID
--------------------------------------------------------------------------------
No historical data to display
--------------------------------------------------------------------------------
Related Commands
|
|
---|---|
clear logging onboard |
Removes the OBFL data in the flash memory. |
hw-module module [switch-number] logging onboard |
Enables OBFL. |
show mac access-group
Use the show mac access-group command in EXEC mode to display the MAC access control lists (ACLs) configured for an interface or a switch.
show mac access-group [interface interface-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show mac-access group command. Port 2 has the MAC access list macl_e1 applied; no MAC ACLs are applied to other interfaces.
Switch# show mac access-group
Interface GigabitEthernet0/1:
Inbound access-list is not set
Interface GigabitEthernet0/2:
Inbound access-list is macl_e1
Interface GigabitEthernet0/3:
Inbound access-list is not set
Interface GigabitEthernet0/4:
Inbound access-list is not set
<output truncated>
This is an example of output from the show mac access-group interface command:
Switch# show mac access-group interface gigabitethernet0/1
Interface GigabitEthernet0/1:
Inbound access-list is macl_e1
Related Commands
|
|
---|---|
mac access-group |
Applies a MAC access group to an interface. |
show mac address-table
Use the show mac address-table command in EXEC mode 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
Syntax Description
This command has no arguments or keywords
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
show mac address-table address
Use the show mac address-table address command in EXEC mode to display MAC address table information for the specified MAC address.
show mac address-table address mac-address [interface interface-id] [vlan vlan-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
show mac address-table aging-time
Use the show mac address-table aging-time command in EXEC mode 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]
Syntax Description
vlan vlan-id |
(Optional) Display aging time information for a specific VLAN. The range is 1 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
If no VLAN number is specified, the aging time for all VLANs appears.
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
show mac address-table count
Use the show mac address-table count command in EXEC mode to display the number of addresses present in all VLANs or the specified VLAN.
show mac address-table count [vlan vlan-id]
Syntax Description
vlan vlan-id |
(Optional) Display the number of addresses for a specific VLAN. The range is 1 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
If no VLAN number is specified, the address count for all VLANs appears.
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
show mac address-table dynamic
Use the show mac address-table dynamic command in EXEC mode to display only dynamic MAC address table entries.
show mac address-table dynamic [address mac-address] [interface interface-id] [vlan vlan-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
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]
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. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
show mac address-table learning
Use the show mac address-table learning command in EXEC mode to display the status of MAC address learning for all VLANs or the specified VLAN.
show mac address-table learning [vlan vlan-id]
Syntax Description
vlan vlan-id |
(Optional) Display information for a specific VLAN. The range is 1 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(46)SE1 |
This command was introduced. |
Usage Guidelines
Use the show mac address-table learning command without any keywords to display configured VLANs and whether MAC address learning is enabled or disabled on them. The default is that MAC address learning is enabled on all VLANs. Use the command with a specific VLAN ID to display the learning status on an individual VLAN.

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show mac address-table learning command showing that MAC address learning is disabled on VLAN 200:
Switch# show mac address-table learning
VLAN Learning Status
---- ---------------
1 yes
100 yes
200 no
Related Commands
|
|
---|---|
mac address-table learning vlan |
Enables or disables MAC address learning on a VLAN. |
show mac address-table move update
Use the show mac address-table move update command in EXEC mode to display the MAC address-table move update information on the switch.
show mac address-table move update
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)SED |
This command was introduced. |
Usage Guidelines
To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show mac address-table move update command:
Switch# show mac address-table move update
Switch-ID : 010b.4630.1780
Dst mac-address : 0180.c200.0010
Vlans/Macs supported : 1023/8320
Default/Current settings: Rcv Off/On, Xmt Off/On
Max packets per min : Rcv 40, Xmt 60
Rcv packet count : 10
Rcv conforming packet count : 5
Rcv invalid packet count : 0
Rcv packet count this min : 0
Rcv threshold exceed count : 0
Rcv last sequence# this min : 0
Rcv last interface : Po2
Rcv last src-mac-address : 0003.fd6a.8701
Rcv last switch-ID : 0303.fd63.7600
Xmt packet count : 0
Xmt packet count this min : 0
Xmt threshold exceed count : 0
Xmt pak buf unavail cnt : 0
Xmt last interface : None
switch#
Related Commands
show mac address-table notification
Use the show mac address-table notification command in EXEC mode to display the MAC address notification settings for all interfaces or the specified interface.
show mac address-table notification {change [interface [interface-id] | mac-move | threshold}
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
12.2(40)SE |
The change, mac-move, and threshold keywords were added. |
Usage Guidelines
Use the show mac address-table notification change command without keywords to see if the MAC address change notification 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 notifications for all interfaces. If the interface-id is included, only the flags for that interface appear.
Examples
This is an example of output from the show mac address-table notification change command:
Switch# show mac address-table notification change
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
show mac address-table static
Use the show mac address-table static command in EXEC mode to display only static MAC address table entries.
show mac address-table static [address mac-address] [interface interface-id] [vlan vlan-id]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
show mac address-table vlan
Use the show mac address-table vlan command in EXEC mode to display the MAC address table information for the specified VLAN.
show mac address-table vlan vlan-id
Syntax Description
vlan-id |
(Optional) Display addresses for a specific VLAN. The range is 1 to 4094. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
show mls qos
Use the show mls qos command in EXEC mode to display global quality of service (QoS) configuration information.
show mls qos
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
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
|
|
---|---|
mls qos |
Enables QoS for the entire switch. |
show mls qos aggregate-policer
Use the show mls qos aggregate-policer command in EXEC mode to display the quality of service (QoS) aggregate policer configuration.
show mls qos aggregate-policer [aggregate-policer-name]
Syntax Description
aggregate-policer-name |
(Optional) Display the policer configuration for the specified name. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
---|---|
12.2(25)FX |
This command was introduced. |
Usage Guidelines
A policer defines a maximum permissible rate of transmission, a maximum burst size for transmissions, and an action to take if either maximum is exceeded.

Note To use this command, the switch must be running the LAN Base image.
Examples
This is an example of output from the show mls qos aggregate-policer command:
Switch# show mls qos aggregate-policer policer1
aggregate-policer policer1 1000000 2000000 exceed-action drop
Not used by any policy map
Related Commands
|
|
---|---|
mls qos aggregate-policer |
Defines policer parameters that can be shared by multiple classes within a policy map. |