Catalyst 4500 Series Switch Cisco IOS Command Reference, IOS XE 3.9.xE and IOS 15.2.(5)Ex
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- Updated:
- April 28, 2022
Chapter: show access-group mode interface through show vtp
- show access-group mode interface
- show adjacency
- show ancp multicast
- show arp access-list
- show authentication
- show auto install status
- show auto qos
- show auto security
- show bootflash:
- show bootvar
- show cable-diagnostics tdr
- show call-home
- show cdp neighbors
- show class-map
- show device-sensor cache
- show diagnostic content
- show diagnostic result module
- show diagnostic result module test
- show diagnostic result module test 2
- show diagnostic result module test 3
- show dot1x
- show eigrp plugins
- show environment
- show errdisable detect
- show errdisable recovery
- show etherchannel
- show fabric domain
- show fabric context
- show fabric host-pool
- show flowcontrol
- show hw-module port-group
- show hw-module system max-port-num-mode
- show hw-module uplink
- show idprom
- show interfaces
- show interfaces (virtual switch)
- show interfaces counters
- show interfaces counters (virtual switch)
- show interfaces description
- show interfaces link
- show interfaces mtu
- show interfaces private-vlan mapping
- show interfaces status
- show interfaces switchport
- show interfaces transceiver
- show interfaces trunk
- show ip arp inspection
- show ip arp inspection log
- show ip cef vlan
- show ip dhcp snooping
- show ip dhcp snooping binding
- show ip dhcp snooping database
- show ip igmp interface
- show ip igmp profile
- show ip igmp snooping
- show ip igmp snooping membership
- show ip igmp snooping mrouter
- show ip igmp snooping vlan
- show ip interface
- show ip mfib
- show ip mfib fastdrop
- show ip mroute
- show ip source binding
- show ip verify source
- show ip wccp
- show ipc
- show ipv6 dhcp-ldra
- show ipv6 snooping counters
- show ipv6 mld snooping
- show ipv6 mld snooping mrouter
- show ipv6 mld snooping querier
- show issu capability
- show issu clients
- show issu comp-matrix
- show issu endpoints
- show issu entities
- show issu fsm
- show issu message
- show issu negotiated
- show issu rollback-timer
- show issu sessions
- show issu state
- show l2protocol-tunnel
- show lacp
- show license
- show link state group
- show mab
- show mac access-group interface
- 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 multicast
- show mac-address-table notification
- show mac-address-table protocol
- show mac-address-table static
- show mac-address-table vlan
- show macro auto mac-address-group
- show macro auto device
- show macro auto interface
- show macro auto monitor clients
- show macro auto monitor device
- show macro auto monitor type
- show module
- show monitor
- show monitor capture
- show monitor capture file
- show mvr
- show mvr interface
- show mvr members
- show netflow-lite exporter
- show netflow-lite monitor
- show netflow-lite sampler
- show nmsp
- show pagp
- show pagp dual-active (virtual switch)
- show policy-map
- show policy-map control-plane
- show policy-map interface
- show policy-map interface vlan
- show port-security
- show power
- show power inline police
- show pppoe intermediate-agent interface
- show qos
- show qos aggregate policer
- show qos dbl
- show qos interface
- show qos maps
- show redundancy
- show redundancy config-sync
- show running-config
- show shell functions
- show shell triggers
- show slavebootflash:
- show slaveslot0:
- show slot0:
- show spanning-tree
- show spanning-tree mst
- show storm-control
- show switch virtual (virtual switch)
- show system mtu
- show tech-support
- show udld
- show vlan
- show vlan access-map
- show vlan counters
- show vlan dot1q tag native
- show vlan group
- show vlan internal usage
- show vlan mapping
- show vlan mtu
- show vlan private-vlan
- show vlan remote-span
- show vmps
- show vslp (virtual switch)
- show vtp
show access-group mode interface
To display the ACL configuration on a Layer 2 interface, use the show access-group mode interface command.
show access-group mode interface [ interface interface-number ]
Syntax Description
(Optional) Interface type; valid values are ethernet , fastethernet , gigabitethernet , tengigabitethernet , and port-channel . |
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Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
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Support for the 10-Gigabit Ethernet interface was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The valid values for the port number depend on the chassis used.
Examples
The following example shows how to display the ACL configuration on the Fast Ethernet interface 6/1:
Related Commands
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Specifies the override modes (for example, VACL overrides PACL) and the non-override modes (for example, merge or strict mode). |
show adjacency
To display information about the Layer 3 switching adjacency table, use the show adjacency command.
show adjacency [{ interface interface-number } | { null interface-number } | { port-channel number } | { vlan vlan-id } | detail | internal | summary ]
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13, and valid values for the port number are from 1 to 48.
Hardware Layer 3 switching adjacency statistics are updated every 60 seconds.
The following information is contained in the show adjacency command:
- Protocol interface.
- Type of routing protocol that is configured on the interface.
- Interface address.
- Method of adjacency that was learned.
- MAC address of the adjacent router.
- Time left before the adjacency rolls out of the adjacency table. After it rolls out, a packet must use the same next hop to the destination.
Examples
The following example shows how to display adjacency information:
The following example shows how to display a summary of adjacency information:
The following example shows how to display protocol detail and timer information:
The following example shows how to display adjacency information for a specific interface:
Related Commands
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show ancp multicast
To display multicast streams activated by Access Node Control Protocol (ANCP), use the show ancp multicast command.
show ancp multicast [group groupaddr] [source sourceaddr] | [ interface interfacename]
Syntax Description
(Optional) Specifies a multicast flowing on a specific interface. |
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display multicast streams activated by ANCP:
show arp access-list
To display detailed information on an ARP access list, use the show arp command.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the ARP ACL information for a switch:
Related Commands
show authentication
To display the Auth Manager information, use the show authentication command in EXEC or Privileged EXEC mode.
show authentication { interface interface | registrations | sessions [ session-id session-id ] [ handle handle ] [ interface interface ] [ mac mac ] [ method method ] [ interface interface [details | policy] ]
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
Do not enter the show authentication sessions and the clear authentication sessions commands in succession and repeatedly - it causes the switch to shutdown. These commands must not be used this way in scripts either. If you have to enter the commands again, wait for one minute between repetitions.
Table 2-19 describes the significant fields shown in the show authentication display.
Note
The possible values for the status of sessions are given below. For a session in terminal state, “Authz Success” or “Authz Failed” are displayed. “No methods” is displayed if no method has provided a result.
Table 2-20 lists the possible values for the state of methods. For a session in terminal state, “Authc Success,” “Authc Failed,” or “Failed over” are displayed (the latter indicates a method ran and failed over to the next method which did not provide a result. “Not run” is displayed in the case of sessions that are synchronized on standby.
Examples
The following example shows how to display authentication methods registered with Auth Manager:
The following example shows how to display Auth Manager details for a specific interface:
The following example shows how to display all Auth Manager sessions on the switch:
The following example shows how to display all Auth Manager sessions on an interface:
The following example shows how to display Auth Manager session for a specified MAC address:
The following example shows how to display all clients authorized via a specified auth method:
The following example displays the policies applied on interface e0/0:
Related Commands
show auto install status
To display the status of an automatic installation, use the show auto install status command.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the IP address of the TFTP server and to display whether or not the switch is currently acquiring the configuration file on the TFTP server:
The first IP address in the display indicates the server that is used for the automatic installation. The second IP address indicates the TFTP server that provided the configuration file.
show auto qos
To display the automatic quality of service (auto-QoS) configuration that is applied, use the show auto qos user EXEC command.
show auto qos [ interface [ interface-id ]] [ { begin | exclude | include } expression ]
Syntax Description
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The show auto qos interface interface-id command displays the auto-QoS configuration; it does not display any user changes to the configuration that might be in effect.
To display information about the QoS configuration that might be affected by auto-QoS on a non-Supervisor Engine 6-E, use one of these commands:
Expressions are case sensitive. For example, if you enter exclude outpu t, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
The following example shows output from the show auto qos command when auto-QoS is enabled:
Related Commands
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Automatically configures quality of service (auto-QoS) for Voice over IP (VoIP) within a QoS domain. |
show auto security
To display the auto security (configuration), use the show auto security command.
show auto security [configuration]
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows the output of the show auto security command when AS is disabled globally:
The following example shows how to enable auto security on an uplink port:
The following example shows how to enable auto security on an access port:
The following example shows how to display the CLIs that are applied with AS:
show bootflash:
To display information about the bootflash: file system, use the show bootflash: command.
show bootflash: [ all | chips | filesys ]
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display file system status information:
Switch> show bootflash: filesys
-------- F I L E S Y S T E M S T A T U S --------
Device Number = 0
DEVICE INFO BLOCK: bootflash
Magic Number = 6887635 File System Vers = 10000 (1.0)
Length = 1000000 Sector Size = 40000
Programming Algorithm = 39 Erased State = FFFFFFFF
File System Offset = 40000 Length = F40000
MONLIB Offset = 100 Length = C628
Bad Sector Map Offset = 3FFF8 Length = 8
Squeeze Log Offset = F80000 Length = 40000
Squeeze Buffer Offset = FC0000 Length = 40000
Num Spare Sectors = 0
Spares:
STATUS INFO:
Writable
NO File Open for Write
Complete Stats
No Unrecovered Errors
No Squeeze in progress
USAGE INFO:
Bytes Used = 917CE8 Bytes Available = 628318
Bad Sectors = 0 Spared Sectors = 0
OK Files = 2 Bytes = 917BE8
Deleted Files = 0 Bytes = 0
Files w/Errors = 0 Bytes = 0
Switch>
The following example shows how to display system image information:
Switch> show bootflash:
-# - ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name
1.. image 8C5A393A 237E3C 14 2063804 Aug 23 1999 16:18:45 c4-boot-mz
2.. image D86EE0AD 957CE8 9 7470636 Sep 20 1999 13:48:49 rp.halley
Switch>
The following example shows how to display all bootflash information:
Switch> show bootflash: all
-# - ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name
1.. image 8C5A393A 237E3C 14 2063804 Aug 23 1999 16:18:45 c4-boot-
mz
2.. image D86EE0AD 957CE8 9 7470636 Sep 20 1999 13:48:49 rp.halley
6456088 bytes available (9534696 bytes used)
-------- F I L E S Y S T E M S T A T U S --------
Device Number = 0
DEVICE INFO BLOCK: bootflash
Magic Number = 6887635 File System Vers = 10000 (1.0)
Length = 1000000 Sector Size = 40000
Programming Algorithm = 39 Erased State = FFFFFFFF
File System Offset = 40000 Length = F40000
MONLIB Offset = 100 Length = C628
Bad Sector Map Offset = 3FFF8 Length = 8
Squeeze Log Offset = F80000 Length = 40000
Squeeze Buffer Offset = FC0000 Length = 40000
Num Spare Sectors = 0
Spares:
STATUS INFO:
Writable
NO File Open for Write
Complete Stats
No Unrecovered Errors
No Squeeze in progress
USAGE INFO:
Bytes Used = 917CE8 Bytes Available = 628318
Bad Sectors = 0 Spared Sectors = 0
OK Files = 2 Bytes = 917BE8
Deleted Files = 0 Bytes = 0
Files w/Errors = 0 Bytes = 0
Switch>
show bootvar
To display BOOT environment variable information, use the show bootvar command.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display BOOT environment variable information:
Switch# show bootvar
BOOT variable = sup:1;
CONFIG_FILE variable does not exist
BOOTLDR variable does not exist
Configuration register is 0x0
Switch#
show cable-diagnostics tdr
To display the test results for the TDR cable diagnostics, use the show cable-diagnostics tdr command.
show cable-diagnostics tdr { interface { interface interface-number }}
Note This command will be deprecated in future Cisco IOS releases; use the diagnostic start command instead.
Syntax Description
Interface type; valid values are fastethernet and gigabitethernet. |
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Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The TDR test is supported on Catalyst 4500 series switches running Cisco IOS Release 12.2(25)SG for the following line cards only:
Examples
The following example shows how to display information about the TDR test:
Table 2-21 describes the fields in the show cable-diagnostics tdr command output.
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Related Commands
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Tests the condition of copper cables on 48-port 10/100/1000 BASE-T modules. |
show call-home
To display the configured CallHome information, use the show call-home command in privileged EXEC mode.
show call-home [ alert-group | detail | mail-server | profile { all | name } | statistics ]
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch, Supervisor Engine 6-E, and Catalyst 4900M chassis. |
Examples
The following example displays the configured CallHome settings:
Configured CallHome Information in Detail
Available Call Home Alert Groups
E-Mail Server Status Information
Information for All Destination Profiles (Predefined and User-Defined)
Information for a User-Defined Destination Profile
Related Commands
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show cdp neighbors
To display detailed information about the neighboring devices that are discovered through CDP, use the show cdp neighbors command.
show cdp neighbors [ type number ] [ detail ]
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
The vlan keyword is supported in Catalyst 4500 series switches that are configured with a Supervisor Engine 2.
The port-channel values are from 0 to 282; values from 257 to 282 are supported on the CSM and the FWSM only.
Examples
The following example shows how to display the information about the CDP neighbors:
Table 2-22 describes the fields that are shown in the example.
The following example shows how to display detailed information about your CDP neighbors:
Table 2-23 describes the fields that are shown in the example.
Related Commands
show class-map
To display class map information, use the show class-map command.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
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Examples
The following example shows how to display class map information for all class maps:
The following example shows how to display class map information for a specific class map:
Assume there are two active flows as shown below on Fast Ethernet interface 6/1:
With following configuration, each flow will be policed to a 1000000 bps with an allowed 9000-byte burst value.
Note If you use the match flow ip source-address|destination-address command, these two flows are consolidated into one flow and they have the same source and destination address.
Related Commands
show device-sensor cache
To display Device Sensor cache entries, use the show device-sensor cache command in privileged EXEC mode.
show device-sensor cache { mac mac-address | all }
Syntax Description
Specifies the MAC address of the device for which the sensor cache entries are to be displayed. |
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Command Default
Command Modes
Command History
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Usage Guidelines
Use the show device-sensor cache command to display a list of TLV fields or options received from a particular device or from all devices.
Examples
The following is sample output from the show device-sensor cache mac mac-address command:
The following is sample output from the show device-sensor cache all command:
The following table describes the significant fields shown in the display:
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MAC address of the device and the interface which it is connected to. |
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Protocol from which the endpoint device data is being gleaned. |
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Related Commands
show diagnostic content
To display test information about the test ID, test attributes, and supported coverage test levels for each test and for all modules, use the show diagnostic content command.
show diagnostic content module { all | num }
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the test suite, monitoring interval, and test attributes for all the modules of the chassis:
Related Commands
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show diagnostic result module
To display the module-based diagnostic test results, use the show diagnostic result module command.
show diagnostic result module [ slot-num | all ] [ test [ test-id | test-id-range | all ]] [ detail ]
Syntax Description
(Optional) Specifies the slot on which diagnostics are displayed. |
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Command Default
A summary of the test results for all modules in the chassis is displayed.
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the summary results for all modules in the chassis:
The following example shows how to display the online diagnostics for module 1:
show diagnostic result module test
To display the results of the bootup packet memory test, use the show diagnostic result module test command. The output indicates whether the test passed, failed, or was not run.
show diagnostic result module [ N | all ] [ test test-id ] [ detail ]
Syntax Description
(Optional) Specifies the number for the tdr test on the platform. |
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(Optional) Specifies the display of detailed information for analysis. |
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The detail keyword is intended for use by Cisco support personnel when analyzing failures.
Examples
The following example shows how to display the results of the bootup packet memory tests:
Related Commands
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show diagnostic result module test 2
To display the results of the bootup packet memory test, use the show diagnostic result module test 2 command. The output indicates whether the test passed, failed, or was not run.
show diagnostic result module N test 2 [ detail ]
Syntax Description
(Optional) Specifies the display of detailed information for analysis. |
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The detail keyword is intended for use by Cisco support personnel when analyzing failures.
Examples
The following example shows how to display the results of the bootup packet memory tests:
The following example shows how to display detailed results from the bootup packet memory tests:
Related Commands
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Directs the action of the switch when it detects a packet memory failure. |
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show diagnostic result module test 3
To display the results from the ongoing packet memory test, use the show diagnostic result module test 3 command. The output indicates whether the test passed, failed, or was not run.
show diagnostic result module N test 3 [ detail ]
Syntax Description
(Optional) Specifies the display of detailed information for analysis. |
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The detail keyword is intended for use by Cisco support personnel when analyzing failures.
Examples
The following example shows how to display the results from the ongoing packet memory tests:
The following example shows how to display the detailed results from the ongoing packet memory tests:
Related Commands
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Directs the action of the switch when it detects a packet memory failure. |
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show dot1x
To display the 802.1X statistics and operational status for the entire switch or for a specified interface, use the show dot1x command.
show dot1x [ interface interface-id ] | [ statistics [ interface interface-id ]] | [ all ]
Syntax Description
Command Default
Command Modes
Command History
Usage Guidelines
If you do not specify an interface, the global parameters and a summary are displayed. If you specify an interface, the details for that interface are displayed.
If you enter the statistics keyword without the interface option, the statistics are displayed for all interfaces. If you enter the statistics keyword with the interface option, the statistics are displayed for the specified interface.
Expressions are case sensitive. For example, if you enter exclude outpu t , the lines that contain output are not displayed, but the lines that contain Output are displayed.
The show dot1x command displays the currently assigned reauthentication timer and time remaining before reauthentication, if reauthentication is enabled.
To display port authorization state information, enter the show authentication sessions interface type number command and the show authentication interface command for interface summary information.
Examples
The following example shows how to display the output from the show dot1x command:
Related Commands
show eigrp plugins
To display general information including the versions of the Enhanced Interior Gateway Routing Protocol (EIGRP) protocol features that are currently running, use the show eigrp plugins command in user EXEC or privileged EXEC mode.
show eigrp plugins [ plugin-name ] [ detailed ]
Syntax Description
(Optional) Displays detailed information about EIGRP features. |
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
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Usage Guidelines
Use the show eigrp plugins command in user EXEC or privileged EXEC mode to determine if a particular EIGRP feature is available in your Cisco IOS image. This command displays a summary of information about EIGRP service families and address families.
This command is useful when contacting Cisco technical support.
Examples
The following example shows how to display EIGRP plugin information:
Table 24 describes the significant fields shown in the display.
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Displays the EIGRP IPv4 service distribution feature version. |
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Displays the EIGRP IPv6 service distribution feature version. |
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show environment
To display the environment alarm, operational status, and current reading for the chassis, use the show environment command.
show environment [ alarm ] | [ status [ chassis | fantray | powersupply | supervisor ]] | [ temperature ]
Syntax Description
(Optional) Specifies the status of the fan tray, and shows fan tray power consumption. |
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(Optional) Specifies the current chassis temperature readings. |
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
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Support for the ability to display generic environment information with the show environment command was added. |
Examples
The following example shows how to display information about the environment alarms, operational status, and current temperature readings for the chassis:
Switch# show environment
no alarm
Chassis Temperature = 32 degrees Celsius
Chassis Over Temperature Threshold = 75 degrees Celsius
Chassis Critical Temperature Threshold = 95 degrees Celsius
Power Fan
Supply Model No Type Status Sensor
------ --------------- --------- ----------- ------
PS1 PWR-C45-1400AC AC 1400W good good
PS2 none -- -- --
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
PS1 0 0 1360 1360 1400
PS2 -- -- -- -- --
Power supplies needed by system : 1
Chassis Type : WS-C4507R
Supervisor Led Color : Green
Fantray : good
Power consumed by Fantray : 50 Watts
The following example shows how to display information about the environment alarms:
Switch# show environment alarm
no alarm
Switch#
The following example shows how to display information about the power supplies, chassis type, and fan trays:
Switch# show environment status
Power Fan
Supply Model No Type Status Sensor
------ --------------- --------- ----------- ------
PS1 PWR-C45-1400AC AC 1400W good good
PS2 none -- -- --
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
PS1 0 0 1360 1360 1400
PS2 -- -- -- -- --
Power supplies needed by system : 1
Chassis Type : WS-C4507R
Supervisor Led Color : Green
Fantray : good
Power consumed by Fantray : 50 Watts
Switch#
The following example shows how to display information about the chassis:
The following example shows how to display information about the fan tray:
The following example shows how to display information about the power supply:
The following example shows how to display information about the supervisor engine:
The following example shows how to display information about the temperature of the chassis:
Switch# show environment temperature
Switch#
show errdisable detect
To display the error disable detection status, use the show errdisable detect command.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
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Usage Guidelines
A displayed gbic-invalid error reason refers to an invalid small form-factor pluggable (SFP) module.
The error-disable reasons in the command output are listed in alphabetical order. The mode column shows how error disable is configured for each feature.
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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Displays interface status or a list of interfaces in error-disabled state. |
show errdisable recovery
Use the show errdisable recovery user EXEC command to display the error-disabled recovery timer information.
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
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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)
--------- ----------------- --------------
Gi1/0/2 link-flap 279
Note Though visible in the output, the unicast-flood field is not valid.
Related Commands
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Displays interface status or a list of interfaces in error-disabled state. |
show etherchannel
To display EtherChannel information for a channel, use the show etherchannel command.
show etherchannel [ channel-group ] { port-channel | brief | detail | summary | port | load-balance | protocol }
Syntax Description
(Optional) Number of the channel group; valid values are from 1 to 64. |
|
Command Default
Command Modes
Command History
|
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
If you do not specify a channel group, all channel groups are displayed.
In the output below, the Passive port list field is displayed for Layer 3 port channels only. This field means that the physical interface, 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
The following example shows how to display port-channel information for a specific group:
Switch# show etherchannel 1 port-channel
Port-channels in the group:
----------------------
Port-channel: Po1
------------
Age of the Port-channel = 02h:35m:26s
Logical slot/port = 10/1 Number of ports in agport = 0
GC = 0x00000000 HotStandBy port = null
Passive port list = Fa5/4 Fa5/5
Port state = Port-channel L3-Ag Ag-Not-Inuse
Ports in the Port-channel:
Index Load Port
-------------------
Switch#
The following example shows how to display load-balancing information:
Switch# show etherchannel load-balance
Source XOR Destination mac address
Switch#
The following example shows how to display a summary of information for a specific group:
Switch# show etherchannel 1 brief
Group state = L3
Ports: 2 Maxports = 8
port-channels: 1 Max port-channels = 1
Switch#
The following example shows how to display detailed information for a specific group:
Switch# show etherchannel 1 detail
Group state = L3
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Ports in the group:
-------------------
Port: Fa5/4
------------
Port state = EC-Enbld Down Not-in-Bndl Usr-Config
Channel group = 1 Mode = Desirable Gcchange = 0
Port-channel = null GC = 0x00000000 Psudo-agport = Po1
Port indx = 0 Load = 0x00
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Fa5/4 d U1/S1 1s 0 128 Any 0
Age of the port in the current state: 02h:33m:14s
Port: Fa5/5
------------
Port state = EC-Enbld Down Not-in-Bndl Usr-Config
Channel group = 1 Mode = Desirable Gcchange = 0
Port-channel = null GC = 0x00000000 Psudo-agport = Po1
Port indx = 0 Load = 0x00
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Fa5/5 d U1/S1 1s 0 128 Any 0
Age of the port in the current state: 02h:33m:17s
Port-channels in the group:
----------------------
Port-channel: Po1
------------
Age of the Port-channel = 02h:33m:52s
Logical slot/port = 10/1 Number of ports in agport = 0
GC = 0x00000000 HotStandBy port = null
Passive port list = Fa5/4 Fa5/5
Port state = Port-channel L3-Ag Ag-Not-Inuse
Ports in the Port-channel:
Index Load Port
-------------------
Switch#
The following example shows how to display a one-line summary per channel group:
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 2
Number of aggregators: 2
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) LACP Gi1/23(H) Gi1/24(H)
Switch#
The following example shows how to display EtherChannel port information for all ports and all groups:
Switch# show etherchannel port
Channel-group listing:
-----------------------
Group: 1
----------
Ports in the group:
-------------------
Port: Fa5/4
------------
Port state = EC-Enbld Down Not-in-Bndl Usr-Config
Channel group = 1 Mode = Desirable Gcchange = 0
Port-channel = null GC = 0x00000000 Psudo-agport = Po1
Port indx = 0 Load = 0x00
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Fa5/4 d U1/S1 1s 0 128 Any 0
Age of the port in the current state: 02h:40m:35s
Port: Fa5/5
------------
Port state = EC-Enbld Down Not-in-Bndl Usr-Config
Channel group = 1 Mode = Desirable Gcchange = 0
Port-channel = null GC = 0x00000000 Psudo-agport = Po1
Port indx = 0 Load = 0x00
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
<...output truncated...>
Switch#
The following example shows how to display the protocol enabled:
Related Commands
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|---|---|
Assigns and configures an EtherChannel interface to an EtherChannel group. |
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show fabric domain
To display your fabric domain configuration, use the show fabric domain command.
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500-E series switch using a Supervisor Engines 8-E and 8L-E. |
Usage Guidelines
Examples
This is sample output for the show fabric domain command, for an edge device.
show fabric context
To display your fabric domain configuration, use the show fabric domain command.
show fabric context [default | name ]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500-E series switch using a Supervisor Engines 8-E and 8L-E. |
Usage Guidelines
Use the command to display a summary of the context configuration in your fabric domain.
Examples
This is sample output for the show fabric context command:
show fabric host-pool
To display your fabric domain configuration, use the show fabric domain command.
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500-E series switch using a Supervisor Engines 8-E and 8L-E. |
Usage Guidelines
Use the command to display a summary of the specified host-pool configuration.
Examples
This is sample output for the show fabric host-pool command:
show flowcontrol
To display the per-interface status and statistics related to flow control, use the show flowcontrol command.
show flowcontrol [ module slot | interface interface ]
Syntax Description
(Optional) Limits the display to interfaces on a specific module. |
|
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
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Support for the 10-Gigabit Ethernet interface was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
show flowcontrol Command Output describes the fields in the show flowcontrol command output.
Examples
The following example shows how to display the flow control status on all the Gigabit Ethernet interfaces:
The following example shows how to display the flow control status on module 1:
The following example shows how to display the flow control status on Gigabit Ethernet interface 3/4:
The following example shows how to display the flow control status on 10-Gigabit Ethernet interface 1/1:
Related Commands
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|---|---|
Configures a Gigabit Ethernet interface to send or receive pause frames. |
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Displays the interface status or a list of interfaces in error-disabled state. |
show hw-module port-group
To display how the X2 holes on a module are grouped, use the show hw-module port-group command.
show hw-module module number port-group
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
Support for WS-X4606-10GE-E Twin Gigabit converter introduced. |
Usage Guidelines
When a TwinGig converter is enabled or disabled, the number and type of ports on the line card change dynamically. The terminology must reflect this behavior. In Cisco IOS, 10-Gigabit ports are named TenGigabit and 1-Gigabit ports are named Gigabit. Starting with Cisco IOS Release 12.2(40)SG, to avoid having ports named TenGigabit1/1 and Gigabit1/1, the 10-Gigabit and 1-Gigabit port numbers are independent. The WS-X4606-10GE-E module with six X2 ports are named TenGigabit<slot-num>/<1-6>, and the SFP ports are named Gigabit<slot-num>/<7-18>.
On Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4900M, Catalyst 4948E, and Catalyst 4948E-F, the ports are connected to the switching engine through a stub ASIC. This stub ASIC imposes some limitations on the ports: Gigabit and 10-Gigabit ports cannot be mixed on a single stub ASIC; they must either be all 10-Gigabit (X2), or all Gigabit (TwinGig converter and SFP). The faceplates of X2 modules show this stub-port grouping, either with an actual physical grouping, or a box drawn around a grouping.
Examples
The following example shows to determine how the X2 holes on a module are grouped on a WS-X4606-10GE-E:
Related Commands
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|---|---|
Selects either Gigabit Ethernet or Ten Gigabit Ethernet interfaces on your module. |
show hw-module system max-port-num-mode
To display the current mode in which a system is running as well as a message informing you that linecards beyond the 5th slot are unsupported, use the show hw-module system max-port-num-mode command.
show hw-module system max-port-num-mode
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The CLI shall be visible only on a 10-slot chassis or if 10-slot chassis is present in VSS.
Examples
The following example shows the output of the show hw-module system max-port-num-mode command on the standalone switch:
The following example shows the output of the show hw-module system max-port-num-mode command in switch virtual mode:
show hw-module uplink
To display the current uplink mode, use the show hw-module uplink command.
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
If the active uplink mode is different than configured mode, the output displays the change.
By default, the current (operational) uplink selection is displayed.
Examples
The following example shows the output displaying the current (active) uplinks:
The following example shows the output for redundant systems in SSO mode if the 10-Gigabit Ethernet uplinks are active, and the Gigabit Ethernet uplinks are selected:
The following example shows the output for redundant systems in RPR mode if the 10-Gigabit Ethernet uplinks are active, and the Gigabit Ethernet uplinks are selected:
Related Commands
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|---|---|
Selects the 10-Gigabit Ethernet or Gigabit Ethernet uplinks on the Supervisor Engine V-10GE within the W-C4510R chassis. |
show idprom
To display the IDPROMs for the chassis, supervisor engine, module, power supplies, fan trays, clock module, and multiplexer (mux) buffer, use the show idprom command.
show idprom { all | chassis | module [ mod ] | interface int_name | supervisor | power-supply number | fan-tray }
Syntax Description
Command Default
Command Modes
Command History
Usage Guidelines
When you enter the show idprom interface command, the output lines for Calibration type and Rx (receive) power measurement may not be displayed for all GBICs.
Examples
The following example shows how to display IDPROM information for module 4:
Switch# show idprom module 4
The following example shows how to display IDPROM information for the GBICs on the Gigabit Ethernet interface 1/2:
Switch# show idprom interface gigabitethernet1/2
Switch#
The following example shows how to display IDPROM information for the 10-Gigabit Ethernet interface 1/1:
Switch# show idprom interface tengigabitethernet1/1
The following example shows how to display IDPROM information for the supervisor engine:
Switch# show idprom supervisor
The following example shows how to display IDPROM information for the chassis:
Switch# show idprom chassis
The following example shows how to display IDPROM information for power supply 1:
Switch# show idprom power-supply 1
The following example shows how to display IDPROM information for the fan tray:
Switch# show idprom fan-tray
show interfaces
To display traffic on a specific interface, use the show interfaces command.
show interfaces [{{ fastethernet mod/interface-number } | { gigabitethernet mod/interface-number } | { tengigabitethernet mod/interface-number } | { null interface-number } | vlan vlan_id } | status }]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
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Support for the 10-Gigabit Ethernet interface was introduced on the Catalyst 4500 series switch. |
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Usage Guidelines
The statistics are collected per VLAN for Layer 2 switched packets and Layer 3 switched packets. The statistics are available for both unicast and multicast. The Layer 3 switched packet counts are available for both the ingress and egress directions. The per-VLAN statistics are updated every 5 seconds.
In some cases, the duplex mode that is displayed by the show interfaces command is different than that displayed by the show running-config command. The duplex mode that is displayed in the show interfaces command is the actual duplex mode that the interface is running. The show interfaces command shows the operating mode for an interface, but the show running-config command shows the configured mode for an interface.
If you do not enter any keywords, all counters for all modules are displayed.
Line cards that support auto-MDIX configuration on their copper media ports include: WS-X4124-RJ45, WS-X4148-RJ with hardware revision 3.0 or later, and WS-X4232-GB-RJ with hardware revision 3.0 or later.
Examples
The following example shows how to display traffic for Gigabit Ethernet interface 2/5:
The following example shows how to display traffic for 10-Gigabit Ethernet interface 1/1:
The following example shows how to verify the status of auto-MDIX on an RJ-45 port:
Note You can verify the configuration setting and the operational state of auto-MDIX on the interface by entering the show interfaces EXEC command. This field is applicable and appears only on the
show interfaces command output for 10/100/1000BaseT RJ-45 copper ports on supported linecards including WS-X4124-RJ45, WS-X4148-RJ with hardware revision 3.0 or later, and WS-X4232-GB-RJ with hardware revision 3.0 or later.
The following example shows how to display status information for Gigabit Ethernet interface 1/2:
The following example shows how to display status information for the interfaces on the supervisor engine:
show interfaces (virtual switch)
To display traffic that is seen by a specific interface, use the show interfaces command in EXEC mode.
show interfaces [ interface iswitch-num/mod/port]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
Statistics are collected on a per-VLAN basis for Layer 2-switched packets and Layer 3-switched packets. Statistics are available for both unicast and multicast traffic. The Layer 3-switched packet counts are available for both ingress and egress directions. The per-VLAN statistics are updated every 5 seconds.
In some cases, you might see a difference in the duplex mode that is displayed between the show interfaces (virtual switch) command and the show running-config switch (virtual switch) command. In this case, the duplex mode that is displayed in the show interfaces (virtual switch) command is the actual duplex mode that the interface is running. The show interfaces (virtual switch) command shows the operating mode for an interface, while the show running-config switch (virtual switch) command shows the configured mode for an interface.
If you do not specify an interface, the information for all interfaces is displayed.
The output of the show interfaces GigabitEthernet command displays an extra 4 bytes for every packet that is sent or received. The extra 4 bytes are the Ethernet frame CRC in the input and output byte statistics.
Examples
Related Commands
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|---|---|
Selects an interface to configure and enters the interface configuration mode. |
show interfaces counters
To display the traffic on the physical interface, use the show interfaces counters command.
show interfaces counters [ all | detail | errors | storm-control | trunk ] [ module mod]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
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Usage Guidelines
If you do not enter any keywords, all the counters for all modules are displayed.
The display for the storm-control keyword includes the suppressed multicast bytes.
Examples
The following example shows how to display the error counters for a specific module:
Switch# show interfaces counters errors module 1
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
Gi1/1 0 0 0 0 0
Gi1/2 0 0 0 0 0
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen Runts Giants
Gi1/1 0 0 0 0 0 0 0
Gi1/2 0 0 0 0 0 0 0
Switch#
The following example shows how to display the traffic that is seen by a specific module:
Switch# show interfaces counters module 1
Port InOctets InUcastPkts InMcastPkts InBcastPkts
Gi1/1 0 0 0 0
Gi1/2 0 0 0 0
Port OutOctets OutUcastPkts OutMcastPkts OutBcastPkts
Gi1/1 0 0 0 0
Gi1/2 0 0 0 0
Switch#
The following example shows how to display the trunk counters for a specific module:
Switch# show interfaces counters trunk module 1
Port TrunkFramesTx TrunkFramesRx WrongEncap
Gi1/1 0 0 0
Gi1/2 0 0 0
Switch#
The following example shows how to display the number of packets that are discarded due to suppression:
Switch# show interfaces counters storm-control
Related Commands
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|---|---|
Displays the interface capabilities for an interface or for all the interfaces on a switch. |
show interfaces counters (virtual switch)
To display the traffic that the physical interface sees, use the show interfaces counters command in EXEC mode.
show interfaces [interface switch-num/mod/port] counters [ errors | etherchannel | protocol status | storm-control]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
The show interfaces counters command displays the number of all of the packets arriving and includes the number of packets that may be dropped by the interface due to the storm-control settings. To display the total number of dropped packets, you can enter the show interfaces counters storm-control command.
The show interfaces counters storm-control command displays the discard count and the level settings for each mode. The discard count is a total of all three modes.
If you do not enter any keywords, all counters for all modules are displayed.
If you do not specify an interface, the information for all interfaces is displayed.
When you enter the show interfaces interface counters etherchannel command, follow these guidelines:
- If interface specifies a physical port, the command displays the message "Etherchannel not enabled on this interface."
- If interface is omitted, the command displays the counters for all port channels (in the system) and for their associated physical ports.
- If interface specifies a port channel, the command displays the counters for the port channel and all of the physical ports that are associated with it. In addition, when you enter the command specifying the primary aggregator in a Link Aggregation Control Protocol (LACP) port channel with multiple aggregators, the output includes the statistics for all of the aggregators in the port channels and for the ports that are associated with them.
Examples
The following example shows how to display the error counters for a specific:
The following example shows how to display the counters for all port channels (in the system) and their associated physical ports:
The following example shows how to display the counters for all port channels (in the system) and their associated physical ports in Cisco IOS Release 12.2(50)SY and later releases:
The following example shows how to display the protocols enabled for a specific interface:
The following example shows how to display the discard count and the level settings for each mode for a specific interface:
Related Commands
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show interfaces description
To display a description and status of an interface, use the show interfaces description command.
show interfaces [ interface ] description
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display information for all interfaces:
Related Commands
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|---|---|
Includes a specific description about the digital signal processor (DSP) interface. |
show interfaces link
To display how long a cable has been disconnected from an interface, use the show interfaces link command:
show interfaces link [ module mod_num ]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
If the interface state is up, the command displays 0:00. If the interface state is down, the time (in hours, minutes, and seconds) is displayed.
Examples
The following example shows how to display active link-level information:
The following example shows how to display inactive link-level information:
In this example, the cable has been disconnected from the port for 1 minute and 28 seconds.
show interfaces mtu
To display the maximum transmission unit (MTU) size of all the physical interfaces and SVIs on the switch, use the show interfaces mtu command.
show interfaces mtu [ module mod ]
Syntax Description
(Optional) Limits the display to interfaces on a specific module. |
Command Default
Command Modes
Command History
|
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|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the MTU size for all interfaces on module 1:
Switch> show interfaces mtu module 1
Port Name MTU
Gi1/1 1500
Gi1/2 1500
Switch>
Related Commands
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|---|---|
Enables jumbo frames on an interface by adjusting the maximum size of a packet or maximum transmission unit (MTU). |
show interfaces private-vlan mapping
To display PVLAN mapping information for VLAN SVIs, use the show interfaces private-vlan mapping command.
show interfaces private-vlan mapping [ active ]
Syntax Description
Command Default
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
Examples
The following example shows how to display PVLAN mapping information:
Related Commands
show interfaces status
To display the interface status or a list of interfaces in error-disabled state, use the show interfaces status command.
show interfaces status [ err-disabled | inactive ] [ module { module }]
Syntax Description
Command Default
Command Modes
Command History
Usage Guidelines
When at least one VLAN on a port is error-disabled the output for the show interfaces status command will display vl-err-dis in the VLAN column.
Examples
The following example shows how to display the status of all interfaces:
Switch# show interfaces status
Port Name Status Vlan Duplex Speed Type
Te1/1 connected 1 full 10G 10GBase-LR
Te1/2 connected vl-err-dis full 10G 10GBase-LR
Switch#
The following example shows how to display the status of interfaces in an error-disabled state:
Switch# show interfaces status err-disabled
Port Name Status Reason Err-Disabled VLANs
Fa9/4 notconnect link-flap
Switch#
The following example shows how to display the Gigabit Ethernet interfaces on a WS-X4606-10GE-E switch using the TwinGig Convertor:
Related Commands
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|---|---|
Selects either Gigabit Ethernet or Ten Gigabit Ethernet interfaces on your module. |
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show interfaces switchport
To display the administrative and operational status of a switching (nonrouting) port, use the show interfaces switchport command.
show interfaces [ interface-id ] switchport [ module mod ]
Syntax Description
(Optional) Limits the display to interfaces on the specified module; valid values are from 1 to 6. |
Command Default
Command Modes
Command History
Examples
The following example shows how to display switch-port information using the begin output modifier:
Switch# show interfaces switchport | include VLAN
Name: Fa5/6
Access Mode VLAN: 200 (VLAN0200)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: ALL
The following example shows how to display switch-port information for module 1:
Switch# show interfaces switchport module 1
Switch#
The following example shows how to display the status of native VLAN tagging on the port:
Switch# show interfaces f3/1 switchport
Switch#
Related Commands
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|---|---|
Displays the interface capabilities for an interface or for all the interfaces on a switch. |
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show interfaces transceiver
To display diagnostic-monitoring data for all interfaces that have transceivers installed, use the show interfaces transceiver command.
show interfaces {{[ int_name ] transceiver {[ detail ]} | { transceiver [ module mod ] | detail [ module mod ]}}
Syntax Description
Command Default
The noninterface-specific versions of the show interfaces transceiver command are enabled by default.
The interface-specific versions of these commands are enabled by default if the specified interface has a transceiver (GBIC or SFP) that is configured for diagnostic monitoring, and the transceiver is in a module that supports diagnostic monitoring.
Command Modes
Command History
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
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Usage Guidelines
The show interfaces transceiver command provides useful information under the following conditions:
- At least one transceiver is installed on a chassis that is configured for diagnostic monitoring.
- The transceiver is in a module that supports diagnostic monitoring.
If you notice that the alarm and warning flags have been set on a transceiver, reenter the command to confirm.
Examples
The following example shows how to display diagnostic monitoring data for all interfaces with transceivers installed on the switch:
Note The value for the Optical Tx Power (in dBm) equals ten times log (Tx Power in mW). If the Tx Power value is 3 mW, then the Optical Tx Power value equals 10 * log (3), which equals 10 *.477 or 4.77 dBm. The Optical Rx Power value behaves similarly. If the Tx Power or the Rx Power is zero, then its dBm value is undefined and is shown as N/A (not applicable).
The following example shows how to display detailed diagnostic monitoring data, including calibrated values, alarm and warning thresholds, A2D readouts, and alarm and warning flags. The A2D readouts are reported separately in parentheses only if they differ from the calibrated values:
The following example shows how to display the monitoring data for the interfaces that have transceivers installed on module 2:
The following example shows how to display the detailed monitoring data for the interfaces that have transceivers installed on module 2:
The following example shows how to display the monitoring data for the transceivers on interface Gi1/2:
The following example shows how to display detailed the monitoring data for the transceivers on interface Gi1/2:
Related Commands
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|---|---|
Displays the interface status or a list of interfaces in error-disabled state. |
show interfaces trunk
To display port and module interface-trunk information, use the show interfaces trunk command.
show interfaces trunk [ module mod ]
Syntax Description
(Optional) Limits the display to interfaces on the specified module; valid values are from 1 to 6. |
Command Default
Command Modes
Command History
|
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|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
If you do not specify a keyword, only information for trunking ports is displayed.
Examples
The following example shows how to display interface-trunk information for module 5:
Switch# show interfaces trunk module 5
Port Mode Encapsulation Status Native vlan
Fa5/1 routed negotiate routed 1
Fa5/2 routed negotiate routed 1
Fa5/3 routed negotiate routed 1
Fa5/4 routed negotiate routed 1
Fa5/5 routed negotiate routed 1
Fa5/6 off negotiate not-trunking 10
Fa5/7 off negotiate not-trunking 10
Fa5/8 off negotiate not-trunking 1
Fa5/9 desirable n-isl trunking 1
Fa5/10 desirable negotiate not-trunking 1
Fa5/11 routed negotiate routed 1
Fa5/12 routed negotiate routed 1
Fa5/48 routed negotiate routed 1
Port Vlans allowed on trunk
Fa5/1 none
Fa5/2 none
Fa5/3 none
Fa5/4 none
Fa5/5 none
Fa5/6 none
Fa5/7 none
Fa5/8 200
Fa5/9 1-1005
Fa5/10 none
Fa5/11 none
Fa5/12 none
Fa5/48 none
Port Vlans allowed and active in management domain
Fa5/1 none
Fa5/2 none
Fa5/3 none
Fa5/4 none
Fa5/5 none
Fa5/6 none
Fa5/7 none
Fa5/8 200
Fa5/9 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8
02,850,917,999,1002-1005
Fa5/10 none
Fa5/11 none
Fa5/12 none
Fa5/48 none
Port Vlans in spanning tree forwarding state and not pruned
Fa5/1 none
Fa5/2 none
Fa5/3 none
Fa5/4 none
Fa5/5 none
Fa5/6 none
Fa5/7 none
Fa5/8 200
Fa5/9 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8
02,850,917,999,1002-1005
Fa5/10 none
Fa5/11 none
Fa5/48 none
Switch#
The following example shows how to display trunking information for active trunking ports:
Switch# show interfaces trunk
Port Mode Encapsulation Status Native vlan
Fa5/9 desirable n-isl trunking 1
Port Vlans allowed on trunk
Fa5/9 1-1005
Port Vlans allowed and active in management domain
Fa5/9 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8
02,850,917,999,1002-1005
Port Vlans in spanning tree forwarding state and not pruned
Fa5/9 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8
02,850,917,999,1002-1005
Switch#
show ip arp inspection
To show the status of dynamic ARP inspection for a specific range of VLANs, use the show ip arp inspection command.
show ip arp inspection {[ statistics ] vlan vlan-range | interfaces [ interface-name ]}
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the statistics of packets that have been processed by DAI for
VLAN 3:
The following example shows how to display the statistics of packets that have been processed by DAI for all active VLANs:
The following example shows how to display the configuration and operating state of DAI for VLAN 1:
The following example shows how to display the trust state of Fast Ethernet interface 6/1:
The following example shows how to display the trust state of the interfaces on the switch:
Related Commands
|
|
|
|---|---|
Defines an ARP access list or adds clauses at the end of a predefined list. |
|
show ip arp inspection log
To show the status of the log buffer, use the show ip arp inspection log command.
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the current contents of the log buffer before and after the buffers are cleared:
The following example shows how to clear the buffer with the clear ip arp inspection log command:
Related Commands
|
|
|
|---|---|
Defines an ARP access list or adds clauses at the end of a predefined list. |
|
show ip cef vlan
To view IP CEF VLAN interface status and configuration information and display the prefixes for a specific interface, use the show ip cef vlan command.
show ip cef vlan vlan_num [ detail ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the prefixes for a specific VLAN:
The following example shows how to display detailed IP CEF information for a specific VLAN:
show ip dhcp snooping
To display the DHCP snooping configuration, use the show ip dhcp snooping command.
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Examples
The following example shows how to display the DHCP snooping configuration:
show ip dhcp snooping binding
|
|
|
|---|---|
Configures the number of the DHCP messages that an interface can receive per second. |
|
To display the DHCP snooping binding entries, use the show ip dhcp snooping binding command.
show ip dhcp snooping binding [ ip-address ] [ mac-address ] [ vlan vlan_num ]
[ interface interface_num ]
Syntax Description
Command Default
If no argument is specified, the switch will display the entire DHCP snooping binding table.
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
DHCP snooping is enabled on a VLAN only if both the global snooping and the VLAN snooping are enabled.
To configure a range of VLANs, use the optional last_vlan argument to specify the end of the VLAN range.
Examples
The following example shows how to display the DHCP snooping binding entries for a switch:
----------- ----------- ---------------- ------------- ----- ------------
0000.0100.0201 10.0.0.1 1600 dhcp-snooping 100 FastEthernet3/1
The following example shows how to display an IP address for DHCP snooping binding entries:
----------- ----------- ---------------- ------------- ----- ------------
0000.0100.0201 172.100.101.102 1600 dhcp-snooping 100 FastEthernet3/1
The following example shows how to display the MAC address for the DHCP snooping binding entries:
The following example shows how to display the DHCP snooping binding entries’ MAC address for a specific VLAN:
The following example shows how to display the dynamic DHCP snooping binding entries:
----------- ----------- ---------------- ------------ ----- ------------
0000.0100.0201 10.0.0.1 1600 dhcp-snooping 100 FastEthernet3/1
The following example shows how to display the DHCP snooping binding entries on VLAN 100:
----------- ----------- ---------------- ------------ ----- ------------
0000.0100.0201 10.0.0.1 1600 dhcp-snooping 100 FastEthernet3/1
The following example shows how to display the DHCP snooping binding entries on Ethernet interface 0/1:
----------- ----------- ---------------- ------------ ----- ------------
0000.0100.0201 10.0.0.1 1600 dhcp-snooping 100 FastEthernet3/1
Table 2-26 describes the fields in the show ip dhcp snooping command output.
|
|
|
|---|---|
Binding type; statically configured from CLI or dynamically learned. |
|
Related Commands
|
|
|
|---|---|
Configures the number of the DHCP messages that an interface can receive per second. |
|
show ip dhcp snooping database
To display the status of the DHCP snooping database agent, use the show ip dhcp snooping database command.
show ip dhcp snooping database [ detail ]
Syntax Description
(Optional) Provides additional operating state and statistics information. |
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Examples
The following example shows how to display the DHCP snooping database:
The following example shows how to view additional operating statistics:
Related Commands
|
|
|
|---|---|
Configures the number of the DHCP messages that an interface can receive per second. |
|
show ip igmp interface
To view IP IGMP interface status and configuration information, use the show ip igmp interface command.
show ip igmp interface [ fastethernet slot/port | gigabitethernet slot/port |
tengigabitethernet slot/port | null interface-number | vlan vlan_id ]
Syntax Description
Command Default
If you do not specify a VLAN, information for VLAN 1 is shown.
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
If you omit the optional arguments, the show ip igmp interface command displays information about all interfaces.
Examples
The following example shows how to view IGMP information for VLAN 200:
Related Commands
|
|
|
|---|---|
Displays information on the dynamically learned and manually configured multicast switch interfaces. |
show ip igmp profile
To view all configured IGMP profiles or a specified IGMP profile, use the show ip igmp profile privileged EXEC command.
show ip igmp profile [ profile number ]
Syntax Description
(Optional) IGMP profile number to be displayed; valid ranges are from 1 to 4294967295. |
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
If no profile number is entered, all IGMP profiles are displayed.
Examples
The following example shows how to display IGMP profile 40:
The following example shows how to display all IGMP profiles:
Related Commands
|
|
|
|---|---|
show ip igmp snooping
To display information on dynamically learned and manually configured VLAN switch interfaces, use the show ip igmp snooping command.
show ip igmp snooping [ querier | groups | mrouter ] [ vlan vlan_id ] a.b.c.d [ summary | sources | hosts ] [ count ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Added support to display configuration state for IGMPv3 explicit host tracking. |
Usage Guidelines
You can also use the show mac-address-table multicast command to display the entries in the MAC address table for a VLAN that has IGMP snooping enabled.
You can display IGMP snooping information for VLAN interfaces by entering the show ip igmp snooping command.
Examples
The following example shows how to display the global snooping information on the switch:
The following example shows how to display the snooping information on VLAN 2:
The following example shows how to display IGMP querier information for all VLANs on a switch:
The following example shows how to display IGMP querier information for VLAN 5 when running IGMPv2:
The following example shows how to display IGMP querier information for VLAN 5 when running IGMPv3:
The following example shows how to display snooping information for a specific group:
Switch# show ip igmp snooping group
The following example shows how to display the group’s host types and ports in VLAN 1:
The following example shows how to display the group’s host types and ports in VLAN 1:
The following example shows how to display the current state of a group with respect to a source IP address:
The following example shows how to display the current state of a group with respect to a host MAC address:
The following example shows how to display summary information for a v3 group:
The following example shows how to display multicast router information for VLAN 1:
Switch# show ip igmp snooping mrouter vlan 1
vlan ports
-----+----------------------------------------
1 Gi1/1,Gi2/1,Fa3/48,Router
Switch#
The following example shows how to display the total number of group addresses learned by the system globally:
The following example shows how to display the total number of group addresses learned on VLAN 5:
Related Commands
show ip igmp snooping membership
To display host membership information, use the show ip igmp snooping membership command.
show ip igmp snooping membership [ interface interface_num ] [ vlan vlan_id ]
[ reporter a.b.c.d ] [ source a.b.c.d group a.b.c.d ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
This command is valid only if explicit host tracking is enabled on the switch.
Examples
The following example shows how to display host membership for the Gigabit Ethernet interface 4/1:
The following example shows how to display host membership for VLAN 20 and group 224.10.10.10:
Switch#
The following example shows how to display host membership information for VLAN 20 and to delete the explicit host tracking:
Related Commands
|
|
|
|---|---|
Displays information on dynamically learned and manually configured VLAN switch interfaces. |
show ip igmp snooping mrouter
To display information on the dynamically learned and manually configured multicast switch interfaces, use the show ip igmp snooping mrouter command.
show ip igmp snooping mrouter [ vlan vlan-id ]
Syntax Description
(Optional) Specifies a VLAN; valid values are from 1 to 1001 and from 1006 to 4094. |
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
You can also use the show mac-address-table multicast command to display entries in the MAC address table for a VLAN that has IGMP snooping enabled.
You can display IGMP snooping information for the VLAN interfaces by entering the show ip igmp interface vlan vlan-num command.
Examples
The following example shows how to display snooping information for a specific VLAN:
Switch# show ip igmp snooping mrouter vlan 1
vlan ports
-----+----------------------------------------
1 Gi1/1,Gi2/1,Fa3/48,Switch
Switch#
Related Commands
|
|
|
|---|---|
Statically configures a Layer 2 interface as a multicast router interface for a VLAN. |
|
Displays the information about the IGMP-interface status and configuration. |
|
show ip igmp snooping vlan
To display information on the dynamically learned and manually configured VLAN switch interfaces, use the show ip igmp snooping vlan command.
show ip igmp snooping vlan vlan_num
Syntax Description
Number of the VLAN; valid values are from 1 to 1001 and from 1006 to 4094. |
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
You can also use the show mac-address-table multicast command to display the entries in the MAC address table for a VLAN that has IGMP snooping enabled.
Examples
The following example shows how to display snooping information for a specific VLAN:
Switch# show ip igmp snooping vlan 2
Switch#
Related Commands
show ip interface
To display the usability status of interfaces that are configured for IP, use the show ip interface command.
show ip interface [ type number ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
Usage Guidelines
The Cisco IOS software automatically enters a directly connected route in the routing table if the interface is usable. A usable interface is one through which the software can send and receive packets. If the software determines that an interface is not usable, it removes the directly connected routing entry from the routing table. Removing the entry allows the software to use dynamic routing protocols to determine backup routes to the network, if any.
If the interface can provide two-way communication, the line protocol is marked “up.” If the interface hardware is usable, the interface is marked “up.”
If you specify an optional interface type, you see information only on that specific interface.
If you specify no optional arguments, you see information on all the interfaces.
When an asynchronous interface is encapsulated with PPP or Serial Line Internet Protocol (SLIP), IP fast switching is enabled. The show ip interface command on an asynchronous interface that is encapsulated with PPP or SLIP displays a message indicating that IP fast switching is enabled.
Examples
The following example shows how to display the usability status for a specific VLAN:
Table 2-27 describes the fields that are shown in the example.
show ip mfib
To display all active Multicast Forwarding Information Base (MFIB) routes, use the show ip mfib command.
show ip mfib [ all | counters | log [ n ]]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Support for command introduced on the Supervisor Engine 6-E and Catalyst 4900M chassis. |
Usage Guidelines
In the Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4900M, Catalyst 4948E, and Catalyst 4948E-F, the output of the show ip mfib command does not display any hardware counters.
The MFIB table contains a set of IP multicast routes; each route in the MFIB table contains several flags that associate to the route.
The route flags indicate how a packet that matches a route is forwarded. For example, the IC flag on an MFIB route indicates that some process on the switch needs to receive a copy of the packet. These flags are associated with MFIB routes:
- Internal Copy (IC) flag—Set on a route when a process on the switch needs to receive a copy of all packets matching the specified route.
- Signaling (S) flag—Set on a route when a switch process needs notification that a packet matching the route is received. In the expected behavior, the protocol code updates the MFIB state in response to having received a packet on a signaling interface.
- Connected (C) flag—When set on a route, the C flag has the same meaning as the S flag, except that the C flag indicates that only packets sent by directly connected hosts to the route should be signaled to a protocol process.
A route can also have a set of flags associated with one or more interfaces. For an (S,G) route, the flags on interface 1 indicate how the ingress packets should be treated and whether packets matching the route should be forwarded onto interface 1. These per-interface flags are associated with the MFIB routes:
- Accepting (A)—Set on the RPF interface when a packet that arrives on the interface and that is marked as Accepting (A) is forwarded to all Forwarding (F) interfaces.
- Forwarding (F)—Used with the A flag as described above. The set of forwarding interfaces together form a multicast olist or output interface list.
- Signaling (S)—Set on an interface when a multicast routing protocol process in Cisco IOS needs to be notified of ingress packets on that interface.
- Not Platform (NP) fast-switched—Used with the F flag. A forwarding interface is also marked as Not Platform fast-switched whenever that output interface cannot be fast-switched by the platform hardware and requires software forwarding.
Examples
The following example shows how to display all active MFIB routes:
Related Commands
|
|
|
|---|---|
Clears the global MFIB counters and the counters for all active MFIB routes. |
show ip mfib fastdrop
To display all currently active fast-drop entries and to show whether fast drop is enabled, use the show ip mfib fastdrop command.
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display all currently active fast-drop entries and whether fast drop is enabled.
Related Commands
|
|
|
|---|---|
show ip mroute
To display IP multicast routing table information, use the show ip mroute command.
show ip mroute [ interface_type slot / port | host_name | host_address [ source ] | active [ kbps | interface_type num ] | count | pruned | static | summary ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
|
Usage Guidelines
If you omit all the optional arguments and keywords, the show ip mroute command displays all the entries in the IP multicast routing table.
The show ip mroute active kbps command displays all the sources sending at a rate greater than or equal to kbps .
The multicast routing table is populated by creating source, group (S,G) entries from star, group (*,G) entries. The star refers to all source addresses, the “S” refers to a single source address, and the “G” refers to the destination multicast group address. In creating (S,G) entries, the software uses the best path to that destination group found in the unicast routing table (through Reverse Path Forwarding (RPF).
Examples
The following example shows how to display all the entries in the IP multicast routing table:
The following example shows how to display the rate that the active sources are sending to the multicast groups and to display only the active sources that are sending at greater than the default rate:
The following example shows how to display route and packet count information:
The following example shows how to display summary information:
Table 2-28 describes the fields shown in the output.
Related Commands
|
|
|
|---|---|
Enables Protocol Independent Multicast (PIM) on an interface. |
show ip source binding
To display IP source bindings that are configured on the system, use the show ip source binding EXEC command.
show ip source binding [ ip-address ] [ mac-address ] [ dhcp-snooping | static ] [ vlan vlan-id ] [ interface interface-name ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
Examples
The following example shows how to display the IP source bindings:
The following example shows how to display the static IP binding entry of IP address 11.0.01:
Related Commands
|
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|
|---|---|
show ip verify source
To display the IP source guard configuration and filters on a particular interface, use the show ip verify source command.
show ip verify source [ interface interface_num ]
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
These examples show how to display the IP source guard configuration and filters on a particular interface with the show ip verify source interface command:
- This output appears when DHCP snooping is enabled on VLANs 10–20, interface fa6/1 has IP source filter mode that is configured as IP, and an existing IP address binding 10.0.0.1 is on VLAN 10:
Note The second entry shows that a default PVACL (deny all IP traffic) is installed on the port for those snooping-enabled VLANs that do not have a valid IP source binding.
- This output appears when you enter the show ip verify source interface fa6/2 command and DHCP snooping is enabled on VLANs 10–20, interface fa6/1 has IP source filter mode that is configured as IP, and there is an existing IP address binding 10.0.0.1 on VLAN 10:
- This output appears when you enter the show ip verify source interface fa6/3 command and the interface fa6/3 does not have a VLAN enabled for DHCP snooping:
- This output appears when you enter the show ip verify source interface fa6/4 command and the interface fa6/4 has an IP source filter mode that is configured as IP MAC and the existing IP MAC that binds 10.0.0.2/aaaa.bbbb.cccc on VLAN 10 and 11.0.0.1/aaaa.bbbb.cccd on VLAN 11:
- This output appears when you enter the show ip verify source interface fa6/5 command and the interface fa6/5 has IP source filter mode that is configured as IP MAC and existing IP MAC binding 10.0.0.3/aaaa.bbbb.ccce on VLAN 10, but port security is not enabled on fa6/5:
Note Enable port security first because the DHCP security MAC filter cannot apply to the port or VLAN.
- This output appears when you enter the show ip verify source interface fa6/6 command and the interface fa6/6 does not have IP source filter mode that is configured:
The following example shows how to display all the interfaces on the switch that have DHCP snooping security and IP Port Security tracking enabled with the show ip verify source command.
The output is an accumulation of per-interface show CLIs:
Related Commands
|
|
|
|---|---|
Configures the number of the DHCP messages that an interface can receive per second. |
|
show ip wccp
To display the Web Cache Communication Protocol (WCCP) global configuration and statistics, use the show ip wccp command in user EXEC or privileged EXEC mode.
show ip wccp [ service-number [view | detail] | interfaces [ cef | counts | detail ] | web-cache ]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
|
|
|
|---|---|
This command was introduced on Catalyst 4900M, Catalyst 4948E, Supervisor Engine 6-E, and Supervisor Engine 6L-E. |
Usage Guidelines
Use the clear ip wccp command to reset the counter for the “Packets Redirected” information.
Use the show ip wccp service-number command to get the “Total Packets S/W Redirected” count. The “Total Packets S/W Redirected” count is the number of packets redirected in software.
Use the show ip wccp service-number detail command to get the “Packets Redirected” count. The “Packets Redirected” count is the number of packets redirected in software.
Use the show ip wccp web-cache detail command to get an indication of which traffic is redirected to which cache engine.
Use the show ip wccp command to show the configured WCCP services and a summary of their current state.
For cache-engine clusters using Cisco cache engines, the reverse proxy service-number is indicated by a value of 99.
All the packet statistics correspond to packets switched in software.
Examples
This section contains examples and field descriptions for the following forms of this command:
- show ip wccp service-number
- show ip wccp service-number view
- show ip wccp service-number detail
- show ip wccp interfaces
- show ip wccp web-cache
- show ip wccp web-cache detail
- show ip wccp
The following is sample output from the show ip wccp service-number command:
Table 29 describes the significant fields shown in the display.
show ip wccp service-number view
The following is sample output from the show ip wccp service-number view command for service group 1:
Note The number of maximum service groups that can be configured is 256.
If any web cache is displayed under the WCCP Cache Engines Not Visible field, the router needs to be reconfigured to map the web cache that is not visible to it.
Table 30 describes the significant fields shown in the display.
show ip wccp service-number detail
The following example displays WCCP client information and WCCP router statistics that include the type of services:
The following is sample output from the show ip wccp interfaces command:
Table 31 describes the significant fields shown in the display.
The following is sample output from the show ip wccp web-cache command:
Table 32 describes the significant fields shown in the display.
The following example displays web cache engine information and WCCP router statistics for the web cache service:
Table 33 describes the significant fields shown in the display.
Related Commands
|
|
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|---|---|
Enables support of the WCCP service for participation in a service group. |
|
Enables packet redirection on an outbound or inbound interface using WCCP. |
show ipc
To display IPC information, use the show ipc command.
show ipc { nodes | ports | queue | status }
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Examples
The following example shows how to display the participating nodes:
Switch# show ipc nodes
There are 3 nodes in this IPC realm.
ID Type Name Last Last
Sent Heard
10000 Local IPC Master 0 0
2010000 Local GALIOS IPC:Card 1 0 0
2020000 Ethernet GALIOS IPC:Card 2 12 26
Switch#
The following example shows how to display the local IPC ports:
Switch# show ipc ports
There are 11 ports defined.
Port ID Type Name (current/peak/total)
10000.1 unicast IPC Master:Zone
10000.2 unicast IPC Master:Echo
10000.3 unicast IPC Master:Control
10000.4 unicast Remote TTY Server Port
10000.5 unicast GALIOS RF :Active
index = 0 seat_id = 0x2020000 last sent = 0 heard = 1635 0/1/1635
10000.6 unicast GALIOS RED:Active
index = 0 seat_id = 0x2020000 last sent = 0 heard = 2 0/1/2
2020000.3 unicast GALIOS IPC:Card 2:Control
2020000.4 unicast GALIOS RFS :Standby
2020000.5 unicast Slave: Remote TTY Client Port
2020000.6 unicast GALIOS RF :Standby
2020000.7 unicast GALIOS RED:Standby
RPC packets: current/peak/total
0/1/17
Switch#
The following example shows how to display the contents of the IPC retransmission queue:
The following example shows how to display the status of the local IPC server:
show ipv6 dhcp-ldra
To display configuration details and statistics for a Lightweight DHCPv6 Relay Agent (LDRA), use the show ipv6 dhcp-ldra command in user EXEC or privileged EXEC mode.
Syntax Description
Command Modes
Command History
|
|
|
|---|---|
This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
Use this command to view the number and type of DHCPv6 packets received or processed, the number and type of DHCPv6 messages dropped, error counters, and the interface state (client-facing trusted interface, server-facing interface, and so on).
You can also view LDRA configuration details, such as the type of LDRA configuration and the interface or VLAN where the LDRA is configured.
Examples
The following sample output displays LDRA configuration details. The fields in the example below are self-explanatory.
The following sample output displays LDRA configuration details after initiating a DHCP session. The fields in the example below are self-explanatory.
Device # show ipv6 dhcp-ldra statistics
Related Commands
|
|
|
|---|---|
show ipv6 snooping counters
To display the number of packets dropped per port due to RA Guard, use the show ipv6 snooping counters interface command.
show ipv6 snooping counters interface
Syntax Description
Command Default
Command Modes
Command History
|
|
|
|---|---|
The show ipv6 first-hop counters command was introduced on the Catalyst 4500 series switch. |
|
Examples
This example provides a sample output for the show ipv6 snooping counters command on interface Gi2/49:
Note Only RA (Router Advertisement) and REDIR (Router Redirected packets) counters are supported in Cisco IOS Release 12.2(54)SG.
Related Commands
|
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|
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show ipv6 mld snooping
To display IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping configuration of the switch or the VLAN, use the show ipv6 mld snooping command.
show ipv6 mld snooping [ vlan vlan-id ]
Syntax Description
(Optional) Specifies 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.
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 IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping globally or on the specified VLAN. |
show ipv6 mld snooping mrouter
To display dynamically learned and manually configured IP version 6 (IPv6) Multicast Listener Discovery (MLD) switch ports for the switch or a VLAN, use the show ipv6 mld snooping mrouter command.
show ipv6 mld snooping mrouter [ vlan vlan-id ]
Syntax Description
(Optional) Specifies 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 switch 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.
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 switch ports for a specific VLAN.
Related Commands
show ipv6 mld snooping querier
To display IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping querier-related information most recently received by the switch or the VLAN, use the show ipv6 mld snooping querier command.
show ipv6 mld snooping querier [ vlan vlan-id ]
Syntax Description
(Optional) Specifiesa VLAN; the range is 1 to 1001 and 1006 to 4094. |
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 switches 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.
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 vlan command:
Related Commands
show issu capability
To display the ISSU capability for a client, use the show issu capability command.
show issu capability { entries | groups | types } [ client_id ]
Syntax Description
Command Default
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
Capability is a functionality that an ISSU client can support and is required to interoperate with peers.
When an ISSU-aware client establishes its session with the peer, an ISSU negotiation takes place. The ISSU infrastructure uses the registered information to negotiate the capabilities and the message version to be used during the session.
Examples
The following example shows how to display the ISSU capability types for the IP host ISSU client (clientid=2082):
The following example shows how to display the ISSU capabilities entries for the IP host ISSU client (clientid=2082):
The following example shows how to display the ISSU capabilities groups for the IP host ISSU client (clientid=2082):
Related Commands
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show issu clients
To display the ISSU clients, use the show issu clients command.
show issu clients [ peer_uid ]
Syntax Description
(Optional) Displays a list of clients registered to ISSU infrastructure at the peer supervisor engine. |
Command Default
Displays a list of clients registered to the ISSU infrastructure at the supervisor engine where the command is entered.
Command Modes
Command History
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This command was introduced on the Catalyst 4500 series switch. |
Usage Guidelines
To implement ISSU versioning functionality, a client must first register itself, client capability, and client message information with the ISSU infrastructure during the system initialization.
Examples
The following example shows how to display the ISSU clients: