- Index
- Preface
- Using the Command Line Interface
- Catalyst 3750 Switch Cisco IOS Commands - aaa accounting through reserved-only
- Catalyst 3750 Switch Cisco IOS Commands - rmon collection through show vtp
- Catalyst 3750 Switch Cisco IOS Commands - shutdown through vtp
- Catalyst 3750 Switch Bootloader Commands
- Catalyst 3750 Switch Debug Commands
- Catalyst 3750 Switch Show Platform Commands
- Acknowledgments for Open-Source Software
Catalyst 3560 Switch Command Reference, Cisco IOS Release 15.0(1)SE
Bias-Free Language
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
- Updated:
- August 3, 2016
Chapter: Catalyst 3750 Switch Cisco IOS Commands - rmon collection through show vtp
- rmon collection stats
- sdm prefer
- service password-recovery
- service-policy
- 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 cdp forward
- show cisp
- show class-map
- show cluster
- show cluster candidates
- show cluster members
- show controllers cpu-interface
- show controllers ethernet-controller
- show controllers power inline
- show controllers tcam
- show controllers utilization
- show diagnostic
- show dot1q-tunnel
- 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 ipc
- show ipv6 access-list
- show ipv6 dhcp conflict
- show ipv6 mld snooping
- show ipv6 mld snooping address
- show ipv6 mld snooping mrouter
- show ipv6 mld snooping querier
- show ipv6 route updated
- show l2protocol-tunnel
- show lacp
- show link state group
- show location
- show logging smartlog
- 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
- User EXEC Privileged EXECshow system mtu
- show udld
- show version
- show vlan
- show vlan access-map
- show vlan filter
- 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
Remote Network Monitoring (RMON) collection control index. The range is 1 to 65535. |
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Defaults
Command Modes
Command History
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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 :
You can verify your setting by entering the show rmon statistics privileged EXEC command.
Related Commands
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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 a template to provide maximum system usage for unicast routing or for VLAN configuration, or to select the dual IPv4 and IPv6 template to support IPv6 forwarding. Use the no form of this command to return to the default template.
sdm prefer { access | default | dual-ipv4-and-ipv6 { default | routing | vlan } | routing | vlan }
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
You must reload the switch for the configuration to take effect. If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template currently in use and the template that will become active after a reload.
Use the no sdm prefer command to set the switch to the default desktop template.
The access template maximizes system resources for access control lists (ACLs) as required to accommodate a large number of ACLs.
The default templates balance the use of system resources.
Use the sdm prefer vlan global configuration command only on switches intended for Layer 2 switching with no routing. When you use the VLAN template, no system resources are reserved for routing entries, and any routing is done through software. This overloads the CPU and severely degrades routing performance.
Do not use the routing template if you do not have routing enabled on your switch. Entering the sdm prefer 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 templates if you do not plan to enable IPv6 routing on the switch. Entering the sdm prefer ipv4-and-ipv6 { default | routing | vlan } global configuration command divides resources between IPv4 and IPv6, limiting those allocated to IPv4 forwarding.
Table 2-23 lists the approximate number of each resource supported in each of the IPv4-only templates for a switch. The values in the template are based on eight routed interfaces and approximately one thousand VLANs and represent the approximate hardware boundaries set when a template is selected. If a section of a hardware resource is full, all processing overflow is sent to the CPU, seriously impacting switch performance.
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Table 2-24 lists the approximate number of each resource supported in each of the dual IPv4-and IPv6 templates for a switch.
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IPv6 policy-based routing ACEs1 |
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1.IPv6 policy-based routing is not supported in this release. |
Examples
This example shows how to configure the access template on a switch:
This example shows how to configure the routing template on a switch:
This example shows how to configure the dual IPv4-and-IPv6 default template on a desktop switch:
This example shows how to change a switch template to the default template.
You can verify your settings by entering the show sdm prefer privileged EXEC command.
Related Commands
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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.
Syntax Description
Defaults
Command Modes
Command History
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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:
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.
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.
Related Commands
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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 or a switch virtual interface (SVI). 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
Syntax Description
Apply the specified policy map to the input of a physical port or an SVI. |
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
Command Modes
Command History
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A policy map can now be applied to a physical port or an SVI. |
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Usage Guidelines
Only one policy map per ingress port is supported.
Policy maps can be configured on physical ports or on SVIs. When VLAN-based quality of service (QoS) is disabled by using the no mls qos vlan-based interface configuration command on a physical port, you can configure a port-based policy map on the port. If VLAN-based QoS is enabled by using the mls qos vlan-based interface configuration command on a physical port, the switch removes the previously configured port-based policy map. After a hierarchical policy map is configured and applied on an SVI, the interface-level policy map takes effect on the interface.
You can apply a policy map to incoming traffic on a physical port or on an SVI. You can configure different interface-level policy maps for each class defined in the VLAN-level policy map. For more information about hierarchical policy maps, see the “Configuring QoS” chapter in the software configuration guide for this release.
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:
This example shows how to remove plcmap2 from a physical port:
This example shows how to apply plcmap1 to an ingress SVI when VLAN-based QoS is enabled:
This example shows how to create a hierarchical policy map and attach it to an SVI:
You can verify your settings by entering the show running-config privileged EXEC command.
Related Commands
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Creates or modifies a policy map that can be attached to multiple ports to specify a service policy. |
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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
Command Modes
Policy-map class configuration
Command History
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The ip dscp new-dscp keyword was changed to dscp new-dscp. The set dscp new-dscp command replaces the set ip dscp new-dscp command. |
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Usage Guidelines
If you have used the set ip dscp p olicy-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:
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.
Syntax Description
Command Modes
Command History
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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:
Related Commands
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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.
Syntax Description
Defaults
Command Modes
Command History
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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:
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.
If you
hold the Mode button down for a total of 10 seconds, the configuration is deleted, and the switch reboots.
This example shows how to disable Express Setup mode:
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
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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 Description
(Optional) Display global hardware ACL statistics for switched and routed packets. |
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(Optional) Display Interprocess Communication (IPC) protocol access-list configuration download information. |
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Command Modes
Command History
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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 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:
This is an example of output from the show access-lists hardware counters command:
Related Commands
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Configures a standard or extended numbered access list on the switch. |
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Configures a named or numbered MAC access list on the switch. |
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.
Syntax Description
Command Modes
Command History
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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:
Related Commands
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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
Command Modes
Command History
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Examples
This is an example of output from the show arp access-list command:
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
Command Modes
Command History
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Usage Guidelines
Table 2-25 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 2-26 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.
The output of the show authentications sessions interface command shows fields for Security Policy and Security Status. These fields apply only if Media Access Control Security (MACsec) is supported and enabled. This switch does not support MACsec.
Examples
This is an example the show authentication registrations command:
The is an example of the show authentication interface interface-id command:
This is an example of the show authentication sessions command:
This is an example of the show authentication sessions command for a specified interface:
This is an example of the show authentication sessions command for a specified MAC address:
This is an example of the show authentication session method command for a specified method:
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
(Optional) Display auto-QoS information for the specified port or for all ports. Valid interfaces include physical ports. |
Command Modes
Command History
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The information in the command output changed, and the user guidelines were updated. |
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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:
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:
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:
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:
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:
This is an example of output from the show auto qos command when auto-QoS is disabled on the switch:
This is an example of output from the show auto qos i nterface interface-id command when auto-QoS is disabled on an interface:
Related Commands
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show boot
Use the show boot privileged EXEC command to display the settings of the boot environment variables.
Syntax Description
Command Modes
Command History
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Examples
This is an example of output from the show boot command. Table 2-27 describes each field in the display.
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
Command Modes
Command History
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Usage Guidelines
TDR is supported only on 10/100/1000 copper Ethernet ports. It is not supported on 10/100 ports or 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 on a switch other than a Catalyst 3560G-24PS or 3560G-48PS switch:
This is an example of output from the show cable-diagnostics tdr interface interface-id command on a Catalyst 3560G-24PS or 3560G-48PS switch:
Table 2-28 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:
This is an example of output from the show cable-diagnostics tdr interface interface-id command when TDR is not running:
If an interface does not support TDR, this message appears:
Related Commands
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show cdp forward
To display the CDP forwarding table, use the show cdp forward command in EXEC mode.
show cdp forward [ entry | forward | interface interface-id | neighbor | traffic ]
Syntax Description
(Optional) Displays information about a specific neighbor entry. |
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(Optional) Displays the CDP interface status and configuration. |
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Command Modes
Command History
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Usage Guidelines
The show cdp forward command output shows the number of CDP packets forwarded on each ingress-port- to-egress-port mapping and the statistics for forwarded and dropped packets.
Examples
Related Commands
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Configures the ingress and egress switch ports for CDP traffic. |
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
(Optional) Display CISP information about the specified interface. Valid interfaces include physical ports and port channels. |
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Command Modes
Command History
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Examples
This example shows output from the show cisp interface command:
This example shows output from the show cisp summary command:
Related Commands
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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
Command Modes
Command History
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Examples
This is an example of output from the show class-map command:
Related Commands
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Creates a class map to be used for matching packets to the class whose name you specify. |
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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.
Syntax Description
Command Modes
Command History
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Usage Guidelines
If you enter this command on a switch that is not a cluster member, the error message Not a management cluster member appears.
On a cluster member switch, this command displays the identity of the cluster command switch, the switch member number, and the state of its connectivity with the cluster command switch.
On a cluster command switch, this command displays the cluster name and the total number of members. It also shows the cluster status and time since the status changed. If redundancy is enabled, it displays the primary and secondary command-switch information.
Examples
This is an example of output when the show cluster command is entered on the cluster command switch:
This is an example of output when the show cluster command is entered on a cluster member switch:
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:
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:
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:
Related Commands
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Enables a command-capable switch as the cluster command switch, assigns a cluster name, and optionally assigns a member number to it. |
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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
Command Modes
Command History
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Usage Guidelines
This command is available only on the cluster command switch.
If the switch is not a cluster command switch, the command displays an empty line at the prompt.
The SN in the display means switch member number. If E appears in the SN column, it means that the switch is discovered through extended discovery. If E does not appear in the SN column, it means that the switch member number is the upstream neighbor of the candidate switch. The hop count is the number of devices the candidate is from the cluster command switch.
Examples
This is an example of output from the show cluster candidates command:
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:
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:
This is an example of output from the show cluster candidates detail command:
Related Commands
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Displays the cluster status and a summary of the cluster to which the switch belongs. |
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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
(Optional) Number that identifies a cluster member. The range is 0 to 15. |
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(Optional) Display detailed information for all cluster members. |
Command Modes
Command History
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Usage Guidelines
This command is available only on the cluster command switch.
If the cluster has no members, this command displays an empty line at the prompt.
Examples
This is an example of output from the show cluster members command. The SN in the display means switch number.
This is an example of output from the show cluster members for cluster member 3:
This is an example of output from the show cluster members detail command:
Related Commands
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Displays the cluster status and a summary of the cluster to which the switch belongs. |
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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
Command Modes
Command History
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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:
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
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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 2-29 lists the Transmit fields, and Table 2-30 lists the Receive fields.
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The number of frames dropped on the egress port because the packet aged out. |
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The number of frames that are not sent after the time exceeds 2*maximum-packet time. |
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The number of frames that are larger than the maximum allowed frame size. |
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The number of frames that are successfully sent on an interface after one collision occurs. |
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The number of frames that are successfully sent on an interface after two collisions occur. |
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The number of frames that are successfully sent on an interface after three collisions occur. |
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The number of frames that are successfully sent on an interface after four collisions occur. |
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The number of frames that are successfully sent on an interface after five collisions occur. |
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The number of frames that are successfully sent on an interface after six collisions occur. |
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The number of frames that are successfully sent on an interface after seven collisions occur. |
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The number of frames that are successfully sent on an interface after eight collisions occur. |
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The number of frames that are successfully sent on an interface after nine collisions occur. |
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The number of frames that are successfully sent on an interface after ten collisions occur. |
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The number of frames that are successfully sent on an interface after 11 collisions occur. |
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The number of frames that are successfully sent on an interface after 12 collisions occur. |
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The number of frames that are successfully sent on an interface after 13 collisions occur. |
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The number of frames that are successfully sent on an interface after 14 collisions occur. |
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The number of frames that are successfully sent on an interface after 15 collisions occur. |
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The number of frames that could not be sent on an interface after 16 collisions occur. |
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After a frame is sent, the number of frames dropped because late collisions were detected while the frame was sent. |
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The number of frames dropped on an interface because the CFI2 bit is set. |
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The number of frames that are not sent after the time exceeds the maximum-packet time. |
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The total number of frames sent on an interface that are 64 bytes. |
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The total number of frames sent on an interface that are from 65 to 127 bytes. |
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The total number of frames sent on an interface that are from 128 to 255 bytes. |
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The total number of frames sent on an interface that are from 256 to 511 bytes. |
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The total number of frames sent on an interface that are from 512 to 1023 bytes. |
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The total number of frames sent on an interface that are from 1024 to 1518 bytes. |
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The number of frames sent on an interface that are larger than the maximum allowed frame size. |
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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. |
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This is an example of output from the show controllers ethernet-controller phy command for a specific interface:
This is an example of output from the show controllers ethernet-controller port-asic configuration command:
This is an example of output from the show controllers ethernet-controller port-asic statistics command:
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
Syntax Description
Command Modes
Command History
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Usage Guidelines
For the Catalyst 3560-48PS switches, the instance range is 0 to 11.
For the Catalyst 3560-24PS switches, the instance range is 0 to 5.
For the Catalyst 3560G-48PS switches, the instance range is 0 to 2. For instances other than 0 to 2, the switches provides no output.
For the Catalyst 3560G-24PS switches, 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.
Examples
This is an example of output from the show controllers power inline command on a switch other than a Catalyst 3560G-48PS or 3560G-24PS switch:
This is an example of output from the show controllers power inline command on a Catalyst 3560G-24PS switch:
Related Commands
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Configures the power management mode for the specified PoE port or for all PoE ports. |
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Displays the PoE status for the specified PoE port or for all PoE ports. |
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
(Optional) Display information for the specified port ASIC number. The range is from 0 to 15. |
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Command Modes
Command History
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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:
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
Command Modes
Command History
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Examples
This is an example of output from the show controllers utilization command.
This is an example of output from the show controllers utilization command on a specific port:
Related Commands
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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 result [ detail | test { test-id | test-id-range | all } [ detail ]]
Syntax Description
Defaults
Command Modes
Command History
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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:
Examples
This example shows how to display the online diagnostics that are configured on a switch:
This example shows how to display the online diagnostic results for a switch:
This example shows how to display the online diagnostic test status:
This example shows how to display the online diagnostic test schedule for a switch:
Related Commands
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Sets the scheduling of test-based online diagnostic testing. |
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show dot1q-tunnel
Use the show dot1q-tunnel command in EXEC mode to display information about IEEE 802.1Q tunnel ports.
show dot1q-tunnel [ interface interface-id ]
Syntax Description
(Optional) Specify the interface for which to display IEEE 802.1Q tunneling information. Valid interfaces include physical ports and port channels. |
Command Modes
Command History
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Examples
These are examples of output from the show dot1q-tunnel command:
Related Commands
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show vlan dot1q tag native |
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switchport mode dot1q-tunnel |
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
Note (Optional) Display the IEEE 802.1x status for the specified port (including type, module, and port number) |
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(Optional) Display IEEE 802.1x statistics for the specified port. |
Command Modes
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:
Examples
This is an example of output from the show dot1x command:
This is an example of output from the show dot1x all command:
This is an example of output from the show dot1x all summary command:
This is an example of output from the show dot1x interface interface-id command:
This is an example of output from the show dot1x interface interface-id details command:
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:
This is an example of output from the show dot1x interface interface-id details commmand when a port is configured as both a host and an IP phone (a Cisco IP phone or phone from another manufacturer). The HostMode field shows MULTI-DOMAIN.
Dot1x Info for GigabitEthernet2/0/3
-----------------------------------
PAE = AUTHENTICATOR
PortControl = AUTO
ControlDirection = Both
HostMode = MULTI_DOMAIN
ReAuthentication = Disabled
QuietPeriod = 60
ServerTimeout = 30
SuppTimeout = 30
ReAuthPeriod = 3600 (Locally configured)
ReAuthMax = 2
MaxReq = 2
TxPeriod = 1
RateLimitPeriod = 0
Mac-Auth-Bypass = Enabled
Critical-Auth = Enabled
Critical Recovery Action = Reinitialize
Critical-Auth VLAN = 10
Guest-Vlan = 15
Dot1x Authenticator Client List
-------------------------------
Domain = DATA
Supplicant = 0000.aaaa.bbbb
Auth SM State = AUTHENTICATED
Auth BEND SM Stat = IDLE
Port Status = AUTHORIZED
Authentication Method = MAB
Vlan Policy = 20
This is an example of output from the show dot1x interface interface-id statistics command. Table 2-32 describes the fields in the display.
Related Commands
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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
(Optional) Display port security settings for the specified interface. Valid interfaces include physical ports (including type, module, and port number). |
Command Modes
Command History
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Examples
This is an example of output from the show dtp command:
This is an example of output from the show dtp interface command:
Related Commands
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show interfaces trunk |
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
Note (Optional) Display the EAP information for the specified port (including type, module, and port number). |
Command Modes
Command History
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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:
Examples
This is an example of output from the show eap registrations command:
This is an example of output from the show eap registrations transport command:
This is an example of output from the show eap sessions command:
This is an example of output from the show eap sessions interface interface-id privileged EXEC command:
Related Commands
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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.
command in EXEC mode show env { all | fan | power | rps [ all | detail ] | temperature [ status ]}
Syntax Description
Command Modes
Command History
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Usage Guidelines
Though visible on all switches, the show env temperature status command is valid only for the Catalyst 3560G-48TS, 3560G-48PS, 3560G-24TS, and 3560G-24PS switches. If you enter this command on these switches, the command output shows the switch temperature states and the threshold levels. If you enter the command on a switch other than these four switches, the output field shows Not Applicable.
On a Catalyst 3560G-48PS or 3560G-24PS switch, you can also use the show env temperature command to display the switch temperature status. The command output shows the green and yellow states as OK and the red state as FAULTY. If you enter the show env all command on this switch, the command output is the same as the show env temperature status command output.
For more information about the threshold levels, see the software configuration guide for this release.
Examples
This is an example of output from the show env all command:
This is an example of output from the show env fan command:
This example shows how to display the temperature value, state, and the threshold values. Table 2-33 describes the temperature states in the command output.
show errdisable detect
Use the show errdisable detect command in EXEC mode to display error-disabled detection status.
Syntax Description
Command Modes
Command History
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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:
Related Commands
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Enables error-disabled detection for a specific cause or all causes. |
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show interfaces status |
Displays interface status or a list of interfaces in error-disabled state. |
show errdisable flap-values
Use the show errdisable flap-values command in EXEC mode to display conditions that cause an error to be recognized for a cause.
Syntax Description
Command Modes
Command History
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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.
Examples
This is an example of output from the show errdisable flap-values command:
Related Commands
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Enables error-disabled detection for a specific cause or all causes. |
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show interfaces status |
Displays interface status or a list of interfaces in error-disabled state. |
show errdisable recovery
Use the show errdisable recovery command in EXEC mode to display the error-disabled recovery timer information.
Syntax Description
Command Modes
Command History
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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:
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
l2ptguard Disabled
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)
--------- ----------------- --------------
Gi0/2 link-flap 279
Note Though visible in the output, the unicast-flood field is not valid.
Related Commands
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show interfaces status |
Displays interface status or a list of interfaces in error-disabled state. |
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
Command History
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The channel -group-number range was changed from 1 to 12 to 1 to 48. |
Usage Guidelines
If you do not specify a channel-group , all channel groups are displayed.
In the output, the Passive port list field is displayed only for Layer 3 port channels. This field means that the physical port, which is still not up, is configured to be in the channel group (and indirectly is in the only port channel in the channel group).
Examples
This is an example of output from the show etherchannel 1 detail command:
This is an example of output from the show etherchannel 1 summary command:
This is an example of output from the show etherchannel 1 port-channel command:
This is an example of output from the show etherchannel protocol command:
Related Commands
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show fallback profile
Use the show fallback profile privileged EXEC command to display the fallback profiles that are configured on a switch.
Syntax Description
Command Modes
Command History
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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:
Related Commands
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Configure a port to use web authentication as a fallback method for clients that do not support IEEE 802.1x authentication. |
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ip admission name proxy http [inactivity-time | absolute-time] |
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show dot1x [ interface interface-id ] |
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
Command History
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Usage Guidelines
Use this command to display the flow control status and statistics on the switch or for a specific interface.
Use the show flowcontrol command to display information about all the switch interfaces. The output from the show flowcontrol command is the same as the output from the show flowcontrol module number command.
Use the show flowcontrol interface interface-id command to display information about a specific interface.
Examples
This is an example of output from the show flowcontrol command.
This is an example of output from the show flowcontrol interface interface-id command:
Related Commands
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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 | private-vlan mapping | pruning | stats | status [ err-disabled ] | switchport [ backup | module number ] | transceiver {tengigabitethernet interface-id } | properties | detail [ module number ] | trunk ]
Syntax Description
(Optional) Valid interfaces include physical ports (including type, module, and port number) and port channels. The port-channel range is 1 to 48. |
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(Optional) Display accounting information on the interface, including active protocols and input and output packets and octets. Note The display shows only packets processed in software; hardware-switched packets do not appear. |
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(Optional) Display the capabilities of all interfaces or the specified interface, including the features and options that you can configure on the interface. Though visible in the command line help, this option is not available for VLAN IDs. |
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Note (Optional) Display capabilities, switchport configuration, or transceiver characteristics (depending on preceding keyword) of all interfaces on the or switch. The only valid module number is 1. This option is not available if you enter a specific interface ID. |
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(Optional) See the show interfaces counters command. |
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(Optional) Display the administrative status and description set for an interface. |
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(Optional) Display private-VLAN mapping information for the VLAN switch virtual interfaces (SVIs). This keyword is available only if your switch is running the IP services image, formerly known as the enhanced multilayer image (EMI). |
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(Optional) Display the input and output packets by switching path for the interface. |
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(Optional) Display the status of the interface. A status of unsupported in the Type field means that a non-Cisco small form-factor pluggable (SFP) module is inserted in the module slot. |
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(Optional) Display the administrative and operational status of a switching (nonrouting) port, including port blocking and port protection settings. |
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(Optional) Display Flex Link backup interface configuration and status for the specified interface or all interfaces on the switch. |
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(Optional) Display the physical properties of a CWDM or DWDM small form-factor (SFP) module interface. The keywords have these meanings: |
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Display interface trunk information. If you do not specify an interface, only information for active trunking ports appears. |
Command Modes
Command History
Usage Guidelines
The show interfaces capabilities command with different keywords has these results:
- Use the show interfaces capabilities module 1 to display the capabilities of all interfaces on the switch. Entering any other number is invalid.
- Use the show interfaces interface-id capabilities to display the capabilities of the specified interface.
- Use the show interfaces capabilities (with no module number or interface ID) to display the capabilities of all interfaces on the switch.
Usethe show interfaces switchport module 1 to display the switch port characteristics of all interfaces on the switch. Entering any other number is invalid.
Note Though visible in the command-line help strings, the crb, fair-queue, irb, mac-accounting, precedence, random-detect, rate-limit, and shape keywords are not supported.
Examples
This is an example of output from the show interfaces command for an interface:
This is an example of output from the show interfaces accounting command.
This is an example of output from the show interfaces capabilities command for an interface.
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.
This is an example of output from the show interfaces etherchannel command when port channels are configured on the switch:
This is an example of output from the show interfaces private-vlan mapping command when the private-VLAN primary VLAN is VLAN 10 and the secondary VLANs are VLANs 501 and 502:
This is an example of output from the show interfaces interface-id pruning command when pruning is enabled in the VTP domain:
This is an example of output from the show interfaces stats command for a specified VLAN interface.
This is an example of partial output from the show interfaces status command. It displays the status of all interfaces.
These are examples of output from the show interfaces status command for a specific interface when private VLANs are configured. Port 2 is configured as a private-VLAN host port. It is associated with primary VLAN 20 and secondary VLAN 25.
In this example, port 3 is configured as a private-VLAN promiscuous port. The display shows only the primary VLAN 20.
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.
This is an example of output from the show interfaces switchport command for a port. Table 2-34 describes the fields in the display.
Note Private VLAN trunks are not supported in this release, so those fields are not applicable.
This is an example of output from the show interfaces switchport command for a port configured as a private VLAN promiscuous port. The primary VLAN 20 is mapped to secondary VLANs 25, 30, and 35:
This is an example of output from the show interfaces switchport backup command:
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:
When both interfaces are up, Gi0/8 forwards traffic for VLANs 60, 100 to 120, and Gi0/6 forwards traffic for VLANs 1 to 50.
When a Flex Link interface goes down (LINK_DOWN), VLANs preferred on this interface are moved to the peer interface of the Flex Link pair. In this example, if interface Gi0/6 goes down, Gi0/8 carries all VLANs of the Flex Link pair.
When a Flex Link interface comes up, VLANs preferred on this interface are blocked on the peer interface and moved to the forwarding state on the interface that has just come up. In this example, if interface Gi0/6 comes up, then VLANs preferred on this interface are blocked on the peer interface Gi0/8 and forwarded on Gi0/6.
This is an example of output from the show interfaces interface-id pruning command:
This is an example of output from the show interfaces interface-id trunk command. It displays trunking information for the port.
This is an example of output from the show interfaces interface-id transceiver properties command:
This is an example of output from the show interfaces interface-id transceiver detail command:
This is an example of output from the show interfaces tengigabitethernet interface-id transceiver detail command:
This is an example of output from the show interfaces tengigabitethernet interface-id transceiver properties command:
Related Commands
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Configures a port as a static-access or a dynamic-access port. |
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Blocks unknown unicast or multicast traffic on an interface. |
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Configures Flex Links, a pair of Layer 2 interfaces that provide mutual backup. |
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switchport mode private-vlan |
Configures a port as a private-VLAN host or a promiscuous port. |
Defines private-VLAN association for a host port or private-VLAN mapping for a promiscuous port. |
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Isolates unicast, multicast, and broadcast traffic at Layer 2 from other protected ports on the same switch. |
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switchport trunk pruning |
Configures the VLAN pruning-eligible list for ports in trunking mode. |
show interfaces counters
Use the show interfaces counters privileged EXEC command to display various counters for the switch or for a specific interface.
show interfaces [ interface-id | vlan vlan-id ] counters [ errors | etherchannel | protocol status | trunk ]
Syntax Description
(Optional) Display EtherChannel counters, including octets, broadcast packets, multicast packets, and unicast packets received and sent. |
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(Optional) Display status of protocols enabled on interfaces. |
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Command Modes
Command History
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The etherchannel and protocol status keywords were added. The broadcast, multicast, and unicast keywords were removed. |
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.
This is an example of partial output from the show interfaces counters protocol status command for all interfaces.
This is an example of output from the show interfaces counters trunk command. It displays trunk counters for all interfaces.
Related Commands
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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
(Optional) Display the specified entity. For example, enter the interface (such as gigabitethernet0/1) into which a small form-factor pluggable (SFP) module is installed. |
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Command Modes
Command History
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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:
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
Command History
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Examples
This is an example of output from the show ip arp inspection command
This is an example of output from the show ip arp inspection interfaces command:
This is an example of output from the show ip arp inspection interfaces interface-id command:
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:
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.
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.
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.
Related Commands
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show ip dhcp snooping
Use the show ip dhcp snooping command in EXEC mode to display the DHCP snooping configuration.
Syntax Description
Command Modes
Command History
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The command output was updated to show the global suboption configuration. |
Usage Guidelines
This command displays only the results of global configuration. Therefore, in this example, the circuit ID suboption appears in its default format of vlan - mod - port, even if a string is configured for the circuit ID.
Examples
This is an example of output from the show ip dhcp snooping command:
Related Commands
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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
Command History
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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:
This example shows how to display the DHCP snooping binding entries for a specific IP address:
This example shows how to display the DHCP snooping binding entries for a specific MAC address:
This example shows how to display the DHCP snooping binding entries on a port:
This example shows how to display the DHCP snooping binding entries on VLAN 20:
Table 2-35 describes the fields in the show ip dhcp snooping binding command output:
Related Commands
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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
(Optional) Display detailed status and statistics information. |
Command Modes
Command History
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Examples
This is an example of output from the show ip dhcp snooping database command:
This is an example of output from the show ip dhcp snooping database detail command:
Related Commands
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Configures the DHCP snooping binding database agent or the binding file. |
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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
Command Modes
Command History
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Examples
This is an example of output from the show ip dhcp snooping statistics command:
This is an example of output from the show ip dhcp snooping statistics detail command:
Table 2-36 shows the DHCP snooping statistics and their descriptions:
Related Commands
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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
(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
Command History
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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.
Related Commands
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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
(Optional) See the show ip igmp snooping groups command. |
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(Optional) See the show ip igmp snooping mrouter command. |
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(Optional) See the show ip igmp snooping querier command. |
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(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094 (available only in privileged EXEC mode). |
Command Modes
Command History
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The groups keyword was added. The show ip igmp snooping groups command replaced the show ip igmp snooping multicast command. |
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.
This is an example of output from the show ip igmp snooping command. It displays snooping characteristics for all VLANs on the switch.
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
Command History
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This command was introduced. It replaced the show ip igmp snooping multicast command. |
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.
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.
This is an example of output from the show ip igmp snooping groups dynamic command. It shows only the entries learned by IGMP snooping.
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.
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
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
Command History
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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.
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
Optional) Display IGMP querier information for the specified VLAN. The range is 1 to 1001 and 1006 to 4094. Use the detail keyword to display detailed information. |
Command Modes
Command History
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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 , t hat 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 di splays the device IP address most recently detected by the switch querier and this additional information:
Examples
This is an example of output from the show ip igmp snooping querier command:
This is an example of output from the show ip igmp snooping querier detail command:
Related Commands
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Displays IGMP snooping multicast router ports for the switch or for the specified multicast VLAN. |
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
Command History
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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:
Related Commands
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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
(Optional) Display IP source guard configuration on a specific interface. |
Command Modes
Command History
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Examples
This is an example of output from the show ip verify source command:
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:
Related Commands
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show ipc
Use the show ipc command in EXEC mode to display Interprocess Communications Protocol (IPC) configuration, status, and statistics.
show ipc { mcast { appclass | groups | status } | nodes | ports [ open ] | queue | rpc | session { all | rx | tx } [ verbose ] | status [ cumlulative ] | zones }
Syntax Description
Command Modes
Command History
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Examples
This example shows how to display the IPC routing status:
This example shows how to display the participating nodes:
This example shows how to display the local IPC ports:
This example shows how to display the contents of the IPC retransmission queue:
This example shows how to display all the IPC session statistics:
This example shows how to display the status of the local IPC server:
Related Commands
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show ipv6 access-list
Use the show ipv6 access-list command in EXEC mode to display the contents of all current IPv6 access lists.
show ipv6 access-list [ access-list-name ]
Syntax Description
Command Modes
Command History
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Usage Guidelines
The show ipv6 access-list command provides output similar to the show ip access-list command, except that it is IPv6-specific.
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command and reload the switch.
Note This command is available only if and you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Examples
The following output from the show ipv6 access-list command shows IPv6 access lists named inbound and outbound:
Table 2-37 describes the significant fields shown in the display.
Related Commands
show ipv6 dhcp conflict
Use the show ipv6 dhcp conflict privileged EXEC command to display address conflicts found by a Dynamic Host Configuration Protocol for IPv6 (DHCPv6) server when addresses are offered to the client.
Syntax Description
Command Modes
Command History
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Usage Guidelines
To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 global configuration command, and reload the switch.
When you configure the DHCPv6 server to detect conflicts, it uses ping. The client uses neighbor discovery to detect clients and reports to the server through a DECLINE message. If an address conflict is detected, the address is removed from the pool, and the address is not assigned until the administrator removes the address from the conflict list.
Note This command is available only if and you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Examples
This is an example of the output from the show ipv6 dhcp conflict command:
Related Commands
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Configures a DHCPv6 pool and enters DHCPv6 pool configuration mode. |
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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
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
Command History
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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.
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Examples
This is an example of output from the show ipv6 mld snooping vlan command. It shows snooping characteristics for a specific VLAN.
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
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Enables and configures MLD snooping on the switch or on a VLAN. |
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Configures an SDM template to optimize system resources based on how the switch is being used. |
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
Command History
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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.
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Examples
This is an example of output from the show snooping address command:
Switch# show ipv6 mld snooping address
This is an example of output from the show snooping address count command:
This is an example of output from the show snooping address user command:
Related Commands
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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
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
Command Modes
Command History
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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.
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
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.
This is an example of output from the show ipv6 mld snooping mrouter vlan command. It shows multicast router ports for a specific VLAN.
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
(Optional) Specify a VLAN; the range is 1 to 1001 and 1006 to 4094. |
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(Optional) Display MLD snooping detailed querier information for the switch or for the VLAN. |
Command Modes
Command History
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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.
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Examples
This is an example of output from the show ipv6 mld snooping querier command:
This is an example of output from the show ipv6 mld snooping querier detail command:
This is an example of output from the show ipv6 mld snooping querier vlan command:
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
Command History
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Usage Guidelines
Use the show ipv6 route privileged EXEC command to display the current contents of the IPv6 routing table.
Examples
This is an example of output from the show ipv6 route updated rip command.
Related Commands
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show l2protocol-tunnel
Use the show l2protocol-tunnel command in EXEC mode to display information about Layer 2 protocol tunnel ports. Displays information for interfaces with protocol tunneling enabled.
show l2protocol-tunnel [ interface interface-id ] [ summary ]
Syntax Description
Command Modes
Command History
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Usage Guidelines
After enabling Layer 2 protocol tunneling on an access or IEEE 802.1Q tunnel port by using the l2protocol-tunnel interface configuration command, you can configure some or all of these parameters:
If you enter the show l2protocol-tunnel [ interface interface-id ] command, only information about the active ports on which all the parameters are configured appears.
If you enter the show l2protocol-tunnel summary command, only information about the active ports on which some or all of the parameters are configured appears.
Examples
This is an example of output from the show l2protocol-tunnel command:
This is an example of output from the show l2protocol-tunnel summary command:
Related Commands
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Enables Layer 2 protocol tunneling for CDP, STP, or VTP packets on an interface. |
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Configures a class of service (CoS) value for tunneled Layer 2 protocol packets. |
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
Command History
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The channel -group-number range was changed from 1 to 12 to 1 to 48. |
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 2-38 describes the fields in the display.
This is an example of output from the show lacp internal command:
Table 2-39 describes the fields in the display:
This is an example of output from the show lacp neighbor command:
This is an example of output from the show lacp sys-id command:
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
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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
Defaults
Command Modes
Command History
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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.
Examples
This is an example of output from the show link state group 1 command:
This is an example of output from the show link state group detail command:
Upstream Interfaces : Gi0/15(Dwn) Gi0/16(Dwn)
Downstream Interfaces : Gi0/11(Dis) Gi0/12(Dis) Gi0/13(Dis) Gi0/14(Dis)
Upstream Interfaces : Gi0/15(Dwn) Gi0/16(Dwn) Gi0/17(Dwn)
Downstream Interfaces : Gi0/11(Dis) Gi0/12(Dis) Gi0/13(Dis) Gi0/14(Dis)
Related Commands
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show location
Use the show location command in EXEC mode to display location information for an endpoint.
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
Command History
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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:
This is an example of output from the show location civic-location command that displays all the civic location information:
Related Commands
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show logging smartlog
To display smart logging information, use the show logging smartlog command in privileged EXEC mode.
show logging smartlog [ event-ids | events | statistics { interface interface-id | summary }]
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
You can configure smart logging of packets dropped because of DHCP snooping violations, Dynamic ARP inspection violations, IP source guard denied traffic, or ACL permitted or denied traffic. The packet contents are sent to the identified Cisco IOS NetFlow collector.
The statistics counters reflect the number of packets that have been sent to the collector by smart logging.
Examples
This is an example of output from the show logging smartlog events command. The output shows the last 10 smart logging events.
This is an example of output from the show logging smartlog event-ids command:
This is an example of output from the show logging smartlog summary command:
This is an example of output from the show logging smartlog statistics interface command:
Related Commands
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Enables smart logging of dynamic ARP inspection dropped packets. |
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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
(Optional) Display the MAC ACLs configured on a specific interface. Valid interfaces are physical ports and port channels; the port-channel range is 1 to 48 (available only in privileged EXEC mode). |
Command Modes
Command History
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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.
This is an example of output from the show mac access-group interface command:
Related Commands
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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.
Syntax Description
Command Modes
Command History
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Examples
This is an example of output from the show mac address-table command:
Related Commands
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clear mac address-table dynamic |
Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN. |
Displays the number of addresses present in all VLANs or the specified VLAN. |
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Displays the MAC address table information for the specified interface. |
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Displays the MAC address notification settings for all interfaces or the specified interface. |
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Displays the MAC address table information for the specified VLAN. |
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
(Optional) Display information for a specific interface. Valid interfaces include physical ports and port channels. |
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(Optional) Display entries for the specific VLAN only. The range is 1 to 4094. |
Command Modes
Command History
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Examples
This is an example of output from the show mac address-table address command:
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
(Optional) Display aging time information for a specific VLAN. The range is 1 to 4094. |
Command Modes
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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:
This is an example of output from the show mac address-table aging-time vlan 10 command:
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
(Optional) Display the number of addresses for a specific VLAN. The range is 1 to 4094. |
Command Modes
Command History
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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:
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
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Examples
This is an example of output from the show mac address-table dynamic command:
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clear mac address-table dynamic |
Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN. |
Displays MAC address table information for the specified MAC address. |
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Displays the number of addresses present in all VLANs or the specified VLAN. |
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Displays the MAC address table information for the specified interface. |
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Displays the MAC address table information for the specified VLAN. |
show mac address-table interface
Use the show mac address-table interface user command to display the MAC address table information for the specified interface in the specified VLAN.
show mac address-table interface interface-id [ vlan vlan-id ]
Syntax Description
Specify an interface type; valid interfaces include physical ports and port channels. |
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(Optional) Display entries for a specific VLAN; the range is 1 to 4094. |
Command Modes
Command History
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Examples
This is an example of output from the show mac address-table interface command:
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
(Optional) Display information for a specific VLAN. The range is 1 to 4094. |
Command Modes
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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.
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:
Related Commands
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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
Command Modes
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Examples
This is an example of output from the show mac address-table move update command:
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mac address-table move update { receive | transmit } |
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
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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:
Related Commands
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clear mac address-table notification |
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Enables the MAC address notification feature for MAC address changes, moves, or address-table thresholds. |
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Displays MAC address table information for the specified MAC address. |
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Displays the number of addresses present in all VLANs or the specified VLAN. |
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Displays the MAC address table information for the specified interface. |
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Displays the MAC address table information for the specified VLAN. |
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
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Examples
This is an example of output from the show mac address-table static command:
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
(Optional) Display addresses for a specific VLAN. The range is 1 to 4094. |
Command Modes
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Examples
This is an example of output from the show mac address-table vlan 1 command:
Related Commands
show mls qos
Use the show mls qos command in EXEC mode to display global quality of service (QoS) configuration information.
Syntax Description
Command Modes
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Examples
This is an example of output from the show mls qos command when QoS is enabled and DSCP transparency is enabled:
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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
(Optional) Display the policer configuration for the specified name. |
Command Modes
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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.
Examples
This is an example of output from the show mls qos aggregate-policer command:
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Defines policer parameters that can be shared by multiple classes within a policy map. |
show mls qos input-queue
Use the show mls qos input-queue command in EXEC mode to display quality of service (QoS) settings for the ingress queues.