Table Of Contents
show adjacency
show bootflash:
show bootvar
show class-map
show diagnostics
show dot1x
show environment
show errdisable detect
show errdisable recovery
show etherchannel
show flowcontrol
show idprom
show interfaces
show interfaces counters
show interfaces description
show interfaces private-vlan mapping
show interfaces status
show interfaces switchport
show interfaces trunk
show ipc
show ip cef vlan
show ip dhcp snooping
show ip dhcp snooping binding
show ip igmp interface
show ip igmp profile
show ip igmp snooping mrouter
show ip igmp snooping vlan
show ip mfib
show ip mfib fastdrop
show ip mroute
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 multicast
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show module
show monitor
show pagp
show platform chassis
show platform cpu packet
show platform crashdump
show platform hardware acl
show platform hardware cpu events
show platform hardware ip route
show platform hardware l2-lookup-cam
show platform hardware mac-address-table
show platform hardware met
show platform hardware monitor
show platform hardware mrq
show platform hardware qos
show platform hardware stp vlan
show platform health
show platform logfeatures
show platform memory address
show platform nvramenv
show platform portmap
show platform software acl
show platform software cpu events
show platform software cpu logging
show platform software host-access-table
show platform software monitor
show platform software portchannel
show platform software stp
show policy-map
show policy-map interface
show power
show qos
show qos aggregate-policer
show qos interface
show qos maps
show redundancy
show running-config
show slavebootflash:
show slaveslot0:
show slot0:
show spanning-tree
show spanning-tree mst
show system mtu
show tech-support
show udld
show vlan
show vlan access-map
show vlan private-vlan
show vtp
22
show adjacency
To display adjacency table information, use the show adjacency command.
show adjacency [{FastEthernet slot/port} | {GigabitEthernet slot/port} | {Null
interface-number} | {Port-channel number} | {Vlan vlan_id} | detail | internal | summary]
Syntax Description
FastEthernet
|
(Optional) Specifies the Fast Ethernet interface.
|
slot/port
|
(Optional) Number of the slot and port.
|
GigabitEthernet
|
(Optional) Specifies the Gigabit Ethernet interface; valid values are from 1 to 9.
|
Null interface-number
|
(Optional) Specifies the null interface; the only valid value is 0.
|
Port-channel number
|
(Optional) Specifies the channel interface; valid values are from 1 to 64.
|
Vlan vlan_id
|
(Optional) Specifies the VLAN; valid values are from 1 to 4094.
|
detail
|
(Optional) Displays protocol detail and timer information.
|
internal
|
(Optional) Displays internal data structure information.
|
summary
|
(Optional) Displays a summary of CEF adjacency information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
Adjacency statistics are updated every 10 seconds.
The information contained in the show adjacency command includes the following:
•
Protocol interface
•
Type of routing protocol configured on the interface
•
Interface address
•
Method adjacency was learned
•
MAC address of the adjacent switch
•
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
This example shows how to display adjacency information:
Protocol Interface Address
IP FastEthernet2/3 172.20.52.1(3045)
IP FastEthernet2/3 172.20.52.22(11)
This example shows how to display a summary of adjacency information:
Switch# show adjacency summary
Adjacency Table has 2 adjacencies
Interface Adjacency Count
This example shows how to display protocol detail and timer information:
Switch# show adjacency detail
Protocol Interface Address
IP FastEthernet2/3 172.20.52.1(3045)
000000000FF920000380000000000000
00000000000000000000000000000000
00605C865B2800D0BB0F980B0800
IP FastEthernet2/3 172.20.52.22(11)
000000000FF920000380000000000000
00000000000000000000000000000000
00801C93804000D0BB0F980B0800
This example shows how to display adjacency information for a specific interface:
Switch# show adjacency fastethernet 2/3
Protocol Interface Address
IP FastEthernet2/3 172.20.52.1(3045)
IP FastEthernet2/3 172.20.52.22(11)
show bootflash:
To display information about the bootflash file system, use the show bootflash: command.
show bootflash: [all | chips | filesys]
Syntax Description
all
|
(Optional) Displays all possible Flash information.
|
chips
|
(Optional) Displays Flash chip information.
|
filesys
|
(Optional) Displays file system information.
|
Defaults
This command has no default settings.
Command Modes
EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This 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 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
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
This example shows how to display system image information:
-#- 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
This 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-
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 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
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
show bootvar
To display BOOT environment variable information, use the show bootvar command.
show bootvar
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display BOOT environment variable information:
CONFIG_FILE variable does not exist
BOOTLDR variable does not exist
Configuration register is 0x0
show class-map
To display class map information, use the show class-map command.
show class-map
show class-map class_name
Syntax Description
class_name
|
Name of the class map.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display class map information for all class maps:
Class Map match-any class-default (id 0)
Class Map match-any class-simple (id 2)
Class Map match-all ipp5 (id 1)
Class Map match-all agg-2 (id 3)
This example shows how to display class map information for a specific class map:
Switch# show class-map ipp5
Class Map match-all ipp5 (id 1)
Related Commands
class-map
show policy-map
show policy-map interface
show diagnostics
To display power-on self-test (POST) results and online diagnostics for a supervisor module, use the show diagnostics command.
show diagnostics [power-on | online module slot_no]
Syntax Description
power-on
|
(Optional) Display power-on self-test (POST) results.
|
online module
|
(Optional) Display online diagnostic results.
|
slot_no
|
Slot number for which diagnostics are displayed.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display power-on self-test (POST) results:
Switch# show diagnostics power-on
Power-On-Self-Test Results
Power-on-self-test for Module 1: WS-X4515
Status: (. = Pass, F = Fail)
Traffic using serdes loopback (L2; one port at a time)...
switch port 0: . switch port 1: . switch port 2: .
switch port 3: . switch port 4: . switch port 5: .
switch port 6: . switch port 7: . switch port 8: .
switch port 9: . switch port 10: . switch port 11: .
switch port 12: . switch port 13: . switch port 14: .
switch port 15: . switch port 16: . switch port 17: .
switch port 18: . switch port 19: . switch port 20: .
switch port 21: . switch port 22: . switch port 23: .
switch port 24: . switch port 25: . switch port 26: .
switch port 27: . switch port 28: . switch port 29: .
switch port 30: . switch port 31: .
Traffic using asic loopback (L2; all ports at once)...
switch port 0: . switch port 1: . switch port 2: .
switch port 3: . switch port 4: . switch port 5: .
switch port 6: . switch port 7: . switch port 8: .
switch port 9: . switch port 10: . switch port 11: .
switch port 12: . switch port 13: . switch port 14: .
switch port 15: . switch port 16: . switch port 17: .
switch port 18: . switch port 19: . switch port 20: .
switch port 21: . switch port 22: . switch port 23: .
switch port 24: . switch port 25: . switch port 26: .
switch port 27: . switch port 28: . switch port 29: .
switch port 30: . switch port 31: .
Traffic using asic loopback (L3; all ports at once)...
switch port 0: . switch port 1: . switch port 2: .
switch port 3: . switch port 4: . switch port 5: .
switch port 6: . switch port 7: . switch port 8: .
switch port 9: . switch port 10: . switch port 11: .
switch port 12: . switch port 13: . switch port 14: .
switch port 15: . switch port 16: . switch port 17: .
switch port 18: . switch port 19: . switch port 20: .
switch port 21: . switch port 22: . switch port 23: .
switch port 24: . switch port 25: . switch port 26: .
switch port 27: . switch port 28: . switch port 29: .
switch port 30: . switch port 31: .
This example shows how to display online diagnostics for module 5:
Switch#show diagnostics online module 5
Slot Ports Card Type Diag Status Diag Details
---- ----- -------------------------------------- ---------------- ------------
5 48 10/100BaseTX (RJ45) Passed None
L = Loopback failure S = Stub failure
I = Ilc failure P = Port failure
E = SEEPROM failure G = GBIC integrity check failure
Ports 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
. . . . . . . . . . . . . . . .
Ports 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
. . . . . . . . . . . . . . . .
Ports 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
. . . . . . . . . . . . . . . .
show dot1x
To display 802.1X statistics, administrative status, and operational status for the switch or for the specified interface, use the show dot1x command.
show dot1x [interface interface-id] | [statistics [interface interface-id]] | [all]
Syntax Description
interface interface-id
|
(Optional) Displays the 802.1X status for the specified port.
|
statistics
|
(Optional) Displays 802.1X statistics for the switch or the specified interface.
|
all
|
(Optional) Displays per-interface 802.1X configuration information for all interfaces with a non-default 802.1X configuration.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
If you do not specify an interface, global parameters and a summary are displayed. If you specify an interface, details for that interface are displayed.
If you specify the statistics keyword without the interface interface-id option, statistics are displayed for all interfaces. If you specify the statistics keyword with the interface interface-id option, statistics are displayed for the specified interface.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.
Examples
This is an example of output from the show dot1x privileged EXEC command:
Sysauthcontrol = Disabled
Dot1x Protocol Version = 1
Dot1x Oper Controlled Directions = Both
Dot1x Admin Controlled Directions = Both
This is an example of output from the show dot1x interface gigabitethernet1/1 privileged EXEC command. Table 2-12 describes the fields in the display.
Switch# show dot1x interface g1/1
Default Dot1x Configuration Exists for this interface GigabitEthernet1/1
AuthSM State = FORCE AUTHORIZED
PortControl = Force Authorized
Re-authentication = Disabled
ReAuthPeriod = 3600 Seconds
ServerTimeout = 30 Seconds
The "Default Dot1x Configuration Exists" line goes away if the config on the interface is non-default. The "Show dot1x all" output is repeated in the show dot1x interface command output for all interfaces with non-default dot1x configurations.
Table 2-12 show dot1x interface Field Description
Field
|
Description
|
802.1X is enabled on GigabitEthernet0/2
|
|
Status
|
Status of the port (authorized or unauthorized). The status of a port is displayed as authorized if the dot1x port-control interface configuration command is set to auto and has successfully completed authentication.
|
Port-control
|
Setting of the dot1x port-control interface configuration command.
|
Supplicant
|
Ethernet MAC address of the client, if one exists. If the switch has not discovered the client, this field displays Not set.
|
Multiple Hosts
|
Setting of the dot1x multiple-hosts interface configuration command (allowed or disallowed).
|
Current Identifier1
|
Each exchange between the switch and the client includes an identifier, which matches requests with responses. This number is incremented with each exchange and can be reset by the authentication server.
|
This is an example of output from the show dot1x statistics interface gigabitethernet1/1 command. Table 2-13 describes the fields in the display.
Switch# show dot1x statistics int g1/1
PortStatistics Parameters for Dot1x
--------------------------------------------
TxReqId = 0 TxReq = 0 TxTotal = 0
RxStart = 0 RxLogoff = 0 RxRespId = 0 RxResp = 0
RxInvalid = 0 RxLenErr = 0 RxTotal= 0
RxVersion = 0 LastRxSrcMac 0000.0000.0000
Table 2-13 show dot1x statistics Field Descriptions
Field
|
Description
|
RX EAPOL Start
|
Number of valid EAPOL-start frames that have been received.
|
RX EAPOL Logoff
|
Number of EAPOL-logoff frames that have been received.
|
RX EAPOL Invalid
|
Number of EAPOL frames that have been received and have an unrecognized frame type.
|
RX EAPOL Total
|
Number of valid EAPOL frames of any type that have been received.
|
RX EAP Resp/ID
|
Number of EAP-response/identity frames that have been received.
|
RX EAP Resp/Oth
|
Number of valid EAP-response frames (other than response/identity frames) that have been received.
|
RX EAP LenError
|
Number of EAPOL frames that have been received in which the packet body length field is invalid.
|
Last EAPOLVer
|
Protocol version number carried in the most recently received EAPOL frame.
|
LAST EAPOLSrc
|
Source MAC address carried in the most recently received EAPOL frame.
|
TX EAPOL Total
|
Number of EAPOL frames of any type that have been sent.
|
TX EAP Req/Id
|
Number of EAP-request/identity frames that have been sent.
|
TX EAP Req/Oth
|
Number of EAP-request frames (other than request/identity frames) that have been sent.
|
show environment
To display environment alarm, operational status, and the current reading for the chassis, use the show environment command.
show environment [alarm] | [status [chassis | fantray | powersupply | supervisor]] |
[temperature]
Syntax Description
alarm
|
(Optional) Specifies alarm status of the chassis.
|
status
|
(Optional) Specifies operational status information.
|
chassis
|
(Optional) Specifies operational status of the chassis.
|
fantray
|
(Optional) Specifies status of the fan tray, and shows fan tray power consumption.
|
powersupply
|
(Optional) Specifies status of the power supply.
|
supervisor
|
(Optional) Specifies status of the supervisor engine.
|
temperature
|
(Optional) Specifies current chassis temperature readings.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for the ability to display generic environment information with the show environment command was added.
|
Examples
This example shows how to display information about environment alarms, operational status, and the current temperature readings for the chassis:
Chassis Temperature = 32 degrees Celsius
Chassis Over Temperature Threshold = 75 degrees Celsius
Chassis Critical Temperature Threshold = 95 degrees Celsius
Supply Model No Type Status Sensor
------ --------------- --------- ----------- ------
PS1 PWR-C45-1400AC AC 1400W good good
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
Power supplies needed by system : 1
Supervisor Led Color : Green
Power consumed by Fantray : 50 Watts
This example shows how to display information about environment alarms:
Switch# show environment alarm
This example shows how to display information about power supplies, chassis type, and fan trays:
Switch# show environment status
Supply Model No Type Status Sensor
------ --------------- --------- ----------- ------
PS1 PWR-C45-1400AC AC 1400W good good
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
Power supplies needed by system : 1
Supervisor Led Color : Green
Power consumed by Fantray : 50 Watts
This example shows how to display information about the chassis:
Switch# show environment status chassis
This example shows how to display information about the fan tray:
Switch# show environment status fantray
Power consumed by Fantray : 50 Watts
This example shows how to display information about the power supply:
Switch# show environment status powersupply
Supply Model No Type Status Sensor
------ --------------- --------- ------- ------
PS1 WS-X4008 AC 400W good good
PS2 WS-X4008 AC 400W good good
This example shows how to display information about the supervisor engine:
Switch# show environment status supervisor
Supervisor Led Color :Green
This example shows how to display information about the temperature of the chassis:
Switch# show environment temperature
Chassis Temperature = 32 degrees Celsius
Chassis Over Temperature Threshold = 75 degrees Celsius
Chassis Critical Temperature Threshold = 95 degrees Celsius
show errdisable detect
To display error disable detection status, use the show errdisable detect command.
show errdisable detect
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display error-disable-detection status:
Switch# show errdisable detect
ErrDisable Reason Detection status
----------------- ----------------
Related Commands
errdisable detect
show errdisable recovery
To display error disable recovery timer information, use the show errdisable recovery command.
show errdisable recovery
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display recovery timer information for error disable:
Switch# show errdisable recovery
ErrDisable Reason Timer Status
----------------- --------------
channel-misconfig Disabled
security-violation Disabled
Timer interval:300 seconds
Interfaces that will be enabled at the next timeout:
Interface Errdisable reason Time left(sec)
--------- ----------------- --------------
Related Commands
errdisable recovery
show interfaces status
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}
Syntax Description
channel-group
|
(Optional) Number of the channel group; valid values are from 1 to 64.
|
port-channel
|
Displays port channel information.
|
brief
|
Displays a summary of EtherChannel information.
|
detail
|
Displays detailed EtherChannel information.
|
summary
|
Displays a one-line summary per channel group.
|
port
|
Displays EtherChannel port information.
|
load-balance
|
Displays load-balance information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for 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 indicates 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
This example shows how to display port channel information for a specific group:
Switch# show etherchannel 1 port-channel
Port-channels in the group:
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:
This example shows how to display load-balancing information:
Switch# show etherchannel load-balance
Source XOR Destination mac address
This example shows how to display a summary of information for a specific group:
Switch# show etherchannel 1 brief
port-channels: 1 Max port-channels = 1
This example shows how to display detailed information for a specific group:
Switch# show etherchannel 1 detail
Port-channels: 1 Max Port-channels = 1
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.
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 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.
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:
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:
This example shows how to display a one-line summary per channel group:
Switch# show etherchannel summary
U-in use I-in port-channel S-suspended D-down i-stand-alone d-default
----- ------------ ----------------------------------------------------------
1 Po1(U) Fa5/4(I) Fa5/5(I)
2 Po2(U) Fa5/6(I) Fa5/7(I)
This example shows how to display EtherChannel port information for all ports and all groups:
Switch# show etherchannel port
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.
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 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.
Related Commands
channel-group
interface port-channel
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
module slot
|
(Optional) Limits the display to interfaces on a specific module.
|
interface interface
|
(Optional) Displays the status on a specific interface.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
Table 2-14 describes the fields in the show flowcontrol command output.
Table 2-14 show flowcontrol Command Output
Field
|
Description
|
Port
|
Module and port number.
|
Send-Flowcontrol-Admin
|
Flow-control administration. Possible settings: on indicates the local port sends flow control to the far end; off indicates the local port does not send flow control to the far end; desired indicates the local end sends flow control to the far end if the far end supports it.
|
Send-Flowcontrol-Oper
|
Flow-control operation. Possible setting: disagree indicates the two ports could not agree on a link protocol.
|
Receive-Flowcontrol-Admin
|
Flow-control administration. Possible settings: on indicates the local port requires the far end to send flow control; off indicates the local port does not allow the far end to send flow control; desired indicates the local end allows the far end to send flow control.
|
Receive-Flowcontrol-Oper
|
Flow-control operation. Possible setting: disagree indicates the two ports could not agree on a link protocol.
|
RxPause
|
Number of pause frames received.
|
TxPause
|
Number of pause frames transmitted.
|
Examples
This example shows how to display flow control status on all the gigabit interfaces:
Port Send FlowControl Receive FlowControl RxPause TxPause
----- -------- -------- -------- -------- ------- -------
Gi1/1 desired off off off 0 0
Gi1/2 on disagree on on 0 0
Gi3/2 desired off off off 0 0
Gi3/3 desired off off off 0 0
Gi3/5 desired off off off 0 0
Gi3/6 desired off off off 0 0
This example shows how to display the flow control status on module 1:
Switch# show flowcontrol module 1
Port Send FlowControl Receive FlowControl RxPause TxPause
----- -------- -------- -------- -------- ------- -------
Gi1/1 desired off off off 0 0
Gi1/2 on disagree on on 0 0
This example shows how to display the flow control status on interface 3/4:
Switch# show flowcontrol interface gigabitethernet 3/4
Port Send FlowControl Receive FlowControl RxPause TxPause
----- -------- -------- -------- -------- ------- -------
Related Commands
flowcontrol
show interfaces status
show idprom
To display IDPROMs for the chassis, supervisor engine, module, power supplies, fan trays, clock module, and mux buffer, use the show idprom command.
show idprom {all | chassis | module [mod] | supervisor | power-supply number | fan-tray |
clock-module | mux-buffer n}
Syntax Description
all
|
(Optional) Displays information for all IDPROMs.
|
chassis
|
(Optional) Displays information for chassis IDPROMs.
|
module mod
|
(Optional) Displays information for module IDPROMs.
|
supervisor
|
(Optional) Displays information for supervisor engine IDPROMs.
|
power-supply number
|
(Optional) Displays information for power supply IDPROMs.
|
fan-tray
|
(Optional) Displays information for the fan tray IDPROM.
|
clock-module
|
(Optional) Displays information for the clock module IDPROM.
|
mux-buffer n
|
(Optional) Displays information for mux buffer IDPROMs. n valid values from 3 to the maximum number of slots in the switch.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for the power-supply, fan-tray, clock-module, and mux-buffer keywords was added.
|
Usage Guidelines
The n value corresponds to the switch slot number. For example, if you query mux-buffer 4, this queries the mux buffer for slot 4.
Examples
This example shows how to display IDPROM information for module 4:
Switch# show idprom module 4
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 4199
OEM String = Cisco Systems, Inc.
Product Number = WS-X4306
Manufacturing Bits = 0x0000
Engineering Bits = 0x0000
Snmp OID = 0.0.0.0.0.0.0.0
RMA Failure Code = 0 0 0 0
Linecard Block Signature = 0x4201
Linecard Block Version = 1
Linecard Block Length = 24
Linecard Block Checksum = 658
Feature Bits = 0x0000000000000000
MAC Base = 0010.7bab.9830
This example shows how to display IDPROM information for the supervisor engine:
Switch# show idprom supervisor
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 4153
OEM String = Cisco Systems, Inc.
Product Number = WS-X4014
Serial Number = JAB05320CCE
Manufacturing Deviation String = 0
Manufacturing Bits = 0x0000
Engineering Bits = 0x0000
Snmp OID = 0.0.0.0.0.0.0.0
RMA Failure Code = 0 0 0 0
Supervisor Block Signature = 0x4101
Supervisor Block Version = 1
Supervisor Block Length = 24
Supervisor Block Checksum = 548
Feature Bits = 0x0000000000000000
MAC Base = 0007.0ee5.2a44
This example shows how to display IDPROM information for the chassis:
Switch# show idprom chassis
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 4285
OEM String = Cisco Systems, Inc.
Product Number = WS-C4006
Serial Number = FOX04473737
Manufacturing Deviation String = 0x00
Manufacturing Bits = 0x0000
Engineering Bits = 0x0000
Snmp OID = 0.0.0.0.0.0.0.0
Chassis Block Signature = 0x4001
Chassis Block Version = 1
Chassis Block Length = 22
Chassis Block Checksum = 421
Feature Bits = 0x0000000000000000
MAC Base = 0004.dd42.2600
This example shows how to display IDPROM information for power supply 1:
Switch# show idprom power-supply 1
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 10207
OEM String = Cisco Systems, Inc.
Product Number = WS-CAC-1440W
Serial Number = ACP05180002
Manufacturing Deviation String =
Manufacturing Bits = 0x0000
Engineering Bits = 0x3031
Snmp OID = 9.12.3.65535.65535.65535.65535.65535
RMA Failure Code = 255 255 255 255
Power Supply Block Signature = 0xFFFF
PowerSupply Block Version = 255
PowerSupply Block Length = 255
PowerSupply Block Checksum = 65535
Feature Bits = 0x00000000FFFFFFFF
This example shows how to display IDPROM information for the fan tray:
Switch# show idprom fan-tray
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 19781
OEM String = "Cisco Systems"
Product Number = WS-X4502-fan
Manufacturing Deviation String =
Manufacturing Bits = 0xFFFF
Engineering Bits = 0xFFFF
Snmp OID = 65535.65535.65535.65535.65535.65535.65535.65535
RMA Failure Code = 255 255 255 255
This example shows how to display IDPROM information for the clock module:
Switch# show idprom clock-module
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 15156
OEM String = "Cisco Systems"
Product Number = "WS-X4K-CLOCK"
Manufacturing Deviation String =
Manufacturing Bits = 0xFFFF
Engineering Bits = 0xFFFF
Snmp OID = 65535.65535.65535.65535.65535.65535.65535.65535
RMA Failure Code = 255 255 255 255
This example shows how to display IDPROM information for mux buffer 3 connected to slot 3 on the switch:
Switch# show idprom mux-buffer 3
Common Block Signature = 0xABAB
Common Block Length = 144
Common Block Checksum = 15164
OEM String = Cisco Systems, Inc
Product Number = ws-x4k-mux1
Manufacturing Deviation String = tbd
Manufacturing Bits = 0xFFFF
Engineering Bits = 0xFFFF
Snmp OID = 65535.65535.65535.65535.65535.65535.65535.65535
RMA Failure Code = 255 255 255 255
show interfaces
To display traffic on a specific interface, use the show interfaces command.
show interfaces [{{FastEthernet mod/interface-number} | {GigabitEthernet
mod/interface-number} | {Null interface-number} | Vlan vlan_id} | status}]
Syntax Description
FastEthernet mod/interface-number
|
(Optional) Specifies the Fast Ethernet module and interface.
|
GigabitEthernet mod/interface-number
|
(Optional) Specifies the Gigabit Ethernet module and interface.
|
Null interface-number
|
(Optional) Specifies the null interface; the valid value is 0.
|
Vlan vlan_id
|
(Optional) Specifies the VLAN; valid values are from 1 to 4094.
|
status
|
(Optional) Displays status information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for extended VLAN addresses was added.
|
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. 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 displayed between the show interfaces command and the show running-config commands. The duplex mode displayed in the show interfaces command is the actual duplex mode the interface is running. The show interfaces command shows the operating mode for an interface, while 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.
Examples
This example shows how to display traffic for a specific interface:
Switch# show interfaces GigabitEthernet 2/5
GigabitEthernet9/5 is up, line protocol is up
Hardware is C4k 1000Mb 802.3, address is 0001.64f8.3fa5 (bia 0001.64f8.3fa5)
Internet address is 172.20.20.20/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters never
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
L2 Switched: ucast: 8199 pkt, 1362060 bytes - mcast: 6980 pkt, 371952 bytes
L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes mcast
L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
300114 packets input, 27301436 bytes, 0 no buffer
Received 43458 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
15181 packets output, 1955836 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
show interfaces counters
To display traffic on the physical interface, use the show interfaces counters command.
show interfaces counters [all | detail | errors | trunk] [module mod]
Syntax Description
all
|
(Optional) Displays all interface counters including errors, trunk, and detail.
|
detail
|
(Optional) Displays detailed interface counters.
|
errors
|
(Optional) Displays interface error counters.
|
trunk
|
(Optional) Displays interface trunk counters.
|
module mod
|
(Optional) Limits the display to interfaces on a specific module.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
If you do not enter any keywords, all counters for all modules are displayed.
Examples
This example shows how to display error counters for a specific module:
Switch# show interfaces counters errors module 1
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen Runts Giants
This example shows how to display traffic seen by a specific module:
Switch# show interfaces counters module 1
Port InOctets InUcastPkts InMcastPkts InBcastPkts
Port OutOctets OutUcastPkts OutMcastPkts OutBcastPkts
This example shows how to display trunk counters for a specific module:
Switch# show interfaces counters trunk module 1
Port TrunkFramesTx TrunkFramesRx WrongEncap
show interfaces description
To display a description and status of an interface, use the show interfaces description command.
show interfaces [interface] description
Syntax Description
interface
|
(Optional) Type of interface.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display information for all interfaces:
Switch# show interfaces description
Interface Status Protocol Description
PO0/0 admin down down First interface
Gi1/1 up up GigE to server farm
Related Commands
description (refer to Cisco IOS documentation)
show interfaces private-vlan mapping
To display PVLAN mapping information for VLAN SVIs, use the show interface private-vlan mapping command.
show interface private-vlan mapping [active]
Syntax Description
active
|
(Optional) Displays active interfaces only.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
This command displays SVI information only.
Examples
This example shows how to display PVLAN mapping information:
Switch# show interface private-vlan mapping
Interface Secondary VLAN Type
--------- -------------- -----------------
Related Commands
private-vlan
private-vlan mapping
show interfaces status
To display interface status or a list of interfaces in error-disabled state, use the show interfaces status command.
show interfaces status [err-disabled]
Syntax Description
err-disabled
|
(Optional) Displays interfaces in error-disabled state.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display the status of all interfaces:
Switch# show interfaces status
Port Name Status Vlan Duplex Speed Type
Gi1/1 disabled routed full 1000 missing
Gi1/2 notconnect 1 full 1000 unknown (4)
Fa5/1 disabled routed auto auto 10/100BaseTX
Fa5/2 disabled routed auto auto 10/100BaseTX
Fa5/3 disabled routed auto auto 10/100BaseTX
Fa5/4 disabled routed auto auto 10/100BaseTX
Fa5/15 disabled routed auto auto 10/100BaseTX
Fa5/16 disabled routed auto auto 10/100BaseTX
Fa5/17 disabled routed auto auto 10/100BaseTX
This example shows how to display the status of interfaces in error-disabled state:
Switch# show interfaces status err-disabled
Fa9/4 notconnect link-flap
informational error message when the timer expires on a cause
--------------------------------------------------------------
5d04h:%PM-SP-4-ERR_RECOVER:Attempting to recover from link-flap err-disable state on Fa9/4
Related Commands
errdisable detect
show errdisable recovery
show interfaces switchport
To display the administrative and operational status of a switching (nonrouting) port, use the show interfaces switchport command.
show interfaces switchport [module module-number]
Syntax Description
module module-number
|
(Optional) Limits the display to interfaces on the specified module; valid values are from 1 to 6.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display switch-port information using the begin output modifier:
Switch# show interfaces switchport | include VLAN
Access Mode VLAN: 200 (VLAN0200)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: ALL
This example shows how to display switch-port information for module 1:
Switch# show interfaces switchport module 1
Administrative Mode:dynamic auto
Administrative Trunking Encapsulation:negotiate
Negotiation of Trunking:On
Access Mode VLAN:1 (default)
Trunking Native Mode VLAN:1 (default)
Administrative private-vlan host-association:none
Administrative private-vlan mapping:none
Operational private-vlan:none
Trunking VLANs Enabled:ALL
Pruning VLANs Enabled:2-1001
Administrative Mode:dynamic auto
Administrative Trunking Encapsulation:negotiate
Negotiation of Trunking:On
Access Mode VLAN:1 (default)
Trunking Native Mode VLAN:1 (default)
Administrative private-vlan host-association:none
Administrative private-vlan mapping:none
Operational private-vlan:none
Trunking VLANs Enabled:ALL
Pruning VLANs Enabled:2-1001
show interfaces trunk
To display port and module interface-trunk information, use the show interfaces trunk command.
show interfaces trunk [module module-number]
Syntax Description
module module-number
|
(Optional) Limits the display to interfaces on the specified module; valid values are from 1 to 6.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for 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
This 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
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
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
This 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
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
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
show ipc
To display IPC information, use the show ipc command.
show ipc {nodes | ports | queue | status}
Syntax Description
nodes
|
Displays participating nodes.
|
ports
|
Displays local IPC ports.
|
queue
|
Displays the contents of the IPC retransmission queue.
|
status
|
Displays the status of the local IPC server.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display participating nodes:
There are 3 nodes in this IPC realm.
10000 Local IPC Master 0 0
2010000 Local GALIOS IPC:Card 1 0 0
2020000 Ethernet GALIOS IPC:Card 2 12 26
This example shows how to display local 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
This example shows how to display the contents of the IPC retransmission queue:
There are 0 IPC messages waiting for acknowledgement in the transmit queue.
There are 0 IPC messages waiting for a response.
There are 0 IPC messages waiting for additional fragments.
There are 0 IPC messages currently on the IPC inboundQ.
There are 0 messages currently in use by the system.
This example shows how to display the status of the local IPC server:
This processor is the IPC master server.
6000 IPC message headers in cache
3363 messages in, 1680 out, 1660 delivered to local port,
1686 acknowledgements received, 1675 sent,
0 NACKS received, 0 sent,
0 messages dropped on input, 0 messages dropped on output
0 no local port, 0 destination unknown, 0 no transport
0 missing callback or queue, 0 duplicate ACKs, 0 retries,
0 ipc_output failures, 0 mtu failures,
0 msg alloc failed, 0 emer msg alloc failed, 0 no origs for RPC replies
0 pak alloc failed, 0 memd alloc failed
0 no hwq, 1 failed opens, 0 hardware errors
No regular dropping of IPC output packets for test purposes
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
vlan_num
|
Number of the VLAN.
|
detail
|
(Optional) Displays detailed information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display the prefixes for a specific VLAN:
Switch# show ip cef vlan 1003
Prefix Next Hop Interface
0.0.0.0/0 172.20.52.1 FastEthernet3/3
10.7.0.0/16 172.20.52.1 FastEthernet3/3
10.16.18.0/23 172.20.52.1 FastEthernet3/3
This example shows how to display detailed IP CEF information for a specific VLAN:
Switch# show ip cef vlan 1003 detail
IP Distributed CEF with switching (Table Version 2364), flags=0x0
1383 routes, 0 reresolve, 0 unresolved (0 old, 0 new)
1383 leaves, 201 nodes, 380532 bytes, 2372 inserts, 989 invalidations
0 load sharing elements, 0 bytes, 0 references
universal per-destination load sharing algorithm, id 9B6C9823
3 CEF resets, 0 revisions of existing leaves
refcounts: 54276 leaf, 51712 node
Adjacency Table has 5 adjacencies
show ip dhcp snooping
To display the DHCP snooping configuration, use the show ip dhcp snooping command.
show ip dhcp snooping
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display the DHCP snooping configuration:
Switch#sh ip dhcp snooping
Switch DHCP snooping is enabled
DHCP snooping is configured on following VLANs:
Insertion of option 82 is enabled
Interface Trusted Rate limit (pps)
-------------------- ------- ----------------
Related Commands
ip dhcp snooping
ip dhcp snooping information option
ip dhcp snooping limit rate
ip dhcp snooping trust
ip dhcp snooping vlan
show ip dhcp snooping binding
To display DHCP snooping binding entries, use the show ip dhcp snooping binding command.
show ip dhcp snooping binding [ip-address] [mac-address] [dynamic | static] [vlan vlan_num]
[interface interface_num]
Syntax Description
ip-address
|
(Optional) Specifies the binding entries IP address.
|
mac-address
|
(Optional) Specifies the binding entries MAC address.
|
dynamic
|
(Optional) Specifies dynamic binding entries.
|
static
|
(Optional) Specifies static binding entries.
|
vlan vlan_num
|
(Optional) Specifies a VLAN.
|
interface interface_num
|
(Optional) Specifies an interface.
|
Defaults
If no argument is specified, the switch will display the entire DHCP snooping binding table.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for 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 variable to specify the end of the VLAN range.
Examples
This example shows how to display the DHCP snooping binding entries for a switch:
Switch# show ip dhcp snooping binding
MacAddress IP Address Lease (seconds) Type VLAN Interface
----------- ----------- ---------------- ----- ----- ------------
0000.0100.0201 10.0.0.1 1600 dynamic 100 FastEthernet3/1
This example shows how to display a DHCP snooping binding entries IP address:
Switch# show ip dhcp snooping binding 172.100.101.102
MacAddress IP Address Lease (seconds) Type VLAN Interface
----------- ----------- ---------------- ----- ----- ------------
0000.0100.0201 172.100.101.102 1600 dynamic 100 FastEthernet3/1
This example shows how to display the DHCP snooping binding entries MAC address:
Switch# show ip dhcp snooping binding 55.5.5.2 0002.b33f.3d5f
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------- ---- --------------------
00:02:B3:3F:3D:5F 55.5.5.2 492 dynamic 99 FastEthernet6/36
This example shows how to display the DHCP snooping binding entries MAC address for a specific VLAN:
Switch# show ip dhcp snooping binding 55.5.5.2 0002.b33f.3d5f vlan 99
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------- ---- --------------------
00:02:B3:3F:3D:5F 55.5.5.2 479 dynamic 99 FastEthernet6/36
This example shows how to display dynamic DHCP snooping binding entries:
Switch# show ip dhcp snooping binding dynamic
MacAddress IP Address Lease (seconds) Type VLAN Interface
----------- ----------- ---------------- ----- ----- ------------
0000.0100.0201 10.0.0.1 1600 dynamic 100 FastEthernet3/1
This example shows how to display DHCP snooping binding entries on VLAN 100:
Switch# show ip dhcp snooping binding vlan 100'
MacAddress IP Address Lease (seconds) Type VLAN Interface
----------- ----------- ---------------- ----- ----- ------------
0000.0100.0201 10.0.0.1 1600 dynamic 100 FastEthernet3/1
This example shows how to display DHCP snooping binding entries on Ethernet interface 0/1:
Switch# show ip dhcp snooping binding interface FastEthernet3/1
MacAddress IP Address Lease (seconds) Type VLAN Interface
----------- ----------- ---------------- ----- ----- ------------
0000.0100.0201 10.0.0.1 1600 dynamic 100 FastEthernet3/1
Table 2-15 describes the fields in the show ip dhcp snooping command output.
Table 2-15 Show IP DHCP Snooping Command Output
Field
|
Description
|
Mac Address
|
Client hardware MAC address
|
IP Address
|
Client IP address assigned from the DHCP server
|
Lease (seconds)
|
IP address lease time
|
Type
|
Binding type; statically configured from CLI or dynamically learned
|
VLAN
|
VLAN number of the client interface
|
Interface
|
Interface that connects to the DHCP client host
|
Related Commands
ip igmp snooping
ip dhcp snooping information option
ip dhcp snooping limit rate
ip dhcp snooping trust
ip igmp snooping vlan
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 |
Null interface-number | Vlan vlan_id]
Syntax Description
FastEthernet slot/port
|
(Optional) Specifies the Fast Ethernet interface and the number of the slot and port.
|
GigabitEthernet slot/port
|
(Optional) Specifies the Gigabit Ethernet interface and the number of the slot and port; valid values are from 1 to 9.
|
Null interface-number
|
(Optional) Specifies the null interface and the number of the interface; the only valid value is 0.
|
Vlan vlan_id
|
Specifies the VLAN and the number of the VLAN; valid values are from 1 to 4094.
|
Defaults
If you do not specify a VLAN, information for VLAN 1 is shown.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
If you omit the optional arguments, the show ip igmp interface command displays information about all interfaces.
Examples
This example shows how to view IGMP information for VLAN 200:
Switch# show ip igmp interface vlan 200
IGMP snooping is globally enabled
IGMP snooping is enabled on this Vlan
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
IGMP snooping is running in IGMP-ONLY mode on this VLAN
Related Commands
clear ip igmp group
show ip igmp snooping mrouter
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
profile number
|
(Optional) IGMP profile number to be displayed; valid ranges are from 1 to 4,294,967,295.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(11b)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
If no profile number is entered, all IGMP profiles are displayed.
Examples
This example shows how to display IGMP profile 40:
Switch# show ip igmp profile 40
range 233.1.1.1 233.255.255.255
This examples shows how to display all IGMP profiles:
Switch# show ip igmp profile
range 230.9.9.0 230.9.9.0
range 229.9.9.0 229.255.255.255
Related Commands
ip igmp profile
show ip igmp snooping mrouter
To display information on 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
vlan vlan-id
|
(Optional) Specifies a VLAN; valid values are from 1 to 1001 and from 1006 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
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 VLAN interfaces by entering the show ip igmp interface vlan vlan-num command.
Examples
This example shows how to display snooping information for a specific VLAN:
Switch# show ip igmp snooping mrouter vlan 1
-----+----------------------------------------
1 Gi1/1,Gi2/1,Fa3/48,Switch
Related Commands
ip igmp snooping vlan mrouter
show ip igmp interface
show mac-address-table multicast
show ip igmp snooping vlan
To display information on 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
vlan_num
|
Number of the VLAN; valid values are from 1 to 1001 and from 1006 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for extended addressing was added.
|
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.
Examples
This example shows how to display snooping information for a specific VLAN:
Switch# show ip igmp snooping vlan 2
IGMP snooping is globally enabled
IGMP snooping TCN solicit query is globally enabled
IGMP snooping global TCN flood query count is 2
IGMP snooping is enabled on this Vlan
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
IGMP snooping is running in IGMP_ONLY mode on this Vlan
Related Commands
ip igmp snooping
ip igmp snooping vlan immediate-leave
ip igmp snooping vlan mrouter
ip igmp snooping vlan static
show ip igmp interface (refer to Cisco IOS documentation)
show ip igmp snooping mrouter
show mac-address-table multicast
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
all
|
(Optional) Specifies all routes in the MFIB, including those routes that are used to accelerate fast switching but that are not necessarily in the upper-layer routing protocol table.
|
counters
|
(Optional) Specifies the counts of MFIB-related events. Only non-zero counters are shown.
|
log
|
(Optional) Specifies a log of the most recent number of MFIB-related events. The most recent event is first.
|
n
|
(Optional) Specifies the number of events.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
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. The following 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 ingress packets should be treated and whether packets matching the route should be forwarded onto interface 1.
The following per-interface flags are associated with 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 in conjunction 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 IOS needs to be notified of ingress packets on that interface.
•
Not Platform (NP) fast-switched—Used in conjunction 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.
For example, the Catalyst 4006 switch with Supervisor Engine III cannot switch tunnel interfaces in hardware so these interfaces are marked with the NP flag. When an NP interface is associated with a route, a copy of every ingress packet arriving on an Accepting interface is sent to the switch software forwarding path for software replication and then forwarded to the NP interface.
Examples
This example shows how to display all active MFIB routes:
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal,
Interface Flags: A - Accept, F - Forward, NS - Signal,
NP - Not platform switched
Packets: Fast/Partial/Slow Bytes: Fast/Partial/Slow:
(171.69.10.13, 224.0.1.40), flags (IC)
Packets: 2292/2292/0, Bytes: 518803/0/518803
(*, 224.0.1.60), flags ()
Packets: 2292/0/0, Bytes: 518803/0/0
(*, 224.0.1.75), flags ()
(10.34.2.92, 239.192.128.80), flags ()
Packets: 24579/100/0, 2113788/15000/0 bytes
(*, 239.193.100.70), flags ()
Packets: 1/0/0, 1500/0/0 bytes
Related Commands
clear ip mfib counters
show ip mfib fastdrop
To show all currently active fast drop entries and to show whether fast drop is enabled, use the show ip mfib fastdrop command.
show ip mfib fastdrop
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display all currently active fast drop entries and whether fast drop is enabled.
Switch# show ip mfib fasttdrop
MFIB fastdrop is enabled.
(10.0.0.1, 224.1.2.3, Vlan9 ) 00:01:32
(10.1.0.2, 224.1.2.3, Vlan9 ) 00:02:30
(1.2.3.4, 225.6.7.8, Vlan3) 00:01:50
Related Commands
clear ip mfib fastdrop
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
interface_type slot/port
|
(Optional) Interface type and number of the slot and port; valid values for interface type are FastEthernet, GigabitEthernet, Null, and Vlan.
|
host_name
|
(Optional) Name or IP address as defined in the DNS hosts table.
|
host_address source
|
(Optional) IP address or name of a multicast source.
|
active
|
(Optional) Displays the rate that active sources are sending to multicast groups.
|
kbps interface_type num
|
(Optional) Minimum rate at which active sources are sending to multicast groups; active sources sending at this rate or greater will be displayed. Valid values are from 1 to 4,294,967,295 kbps. Interface number.
|
count
|
(Optional) Displays route and packet count information.
|
pruned
|
(Optional) Displays pruned routes.
|
static
|
(Optional) Displays static multicast routes.
|
summary
|
(Optional) Displays a one-line, abbreviated summary of each entry in the IP multicast routing table.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
If you omit all optional arguments and keywords, the show ip mroute command displays all entries in the IP multicast routing table.
The show ip mroute active kbps command displays all 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" is 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 (that is, through Reverse Path Forwarding (RPF).
Examples
This example shows how to display all entries in the IP multicast routing table:
IP Multicast Routing Table
Flags:D - Dense, S - Sparse, s - SSM Group, C - Connected, L - Local,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
J - Join SPT, M - MSDP created entry, X - Proxy Join Timer Running
A - Advertised via MSDP, U - URD, I - Received Source Specific Host
Outgoing interface flags:H - Hardware switched
Interface state:Interface, Next-Hop or VCD, State/Mode
(*, 230.13.13.1), 00:16:41/00:00:00, RP 10.15.1.20, flags:SJC
Incoming interface:GigabitEthernet4/8, RPF nbr 10.15.1.20
GigabitEthernet4/9, Forward/Sparse-Dense, 00:16:41/00:00:00, H
(*, 230.13.13.2), 00:16:41/00:00:00, RP 10.15.1.20, flags:SJC
Incoming interface:GigabitEthernet4/8, RPF nbr 10.15.1.20, RPF-MFD
GigabitEthernet4/9, Forward/Sparse-Dense, 00:16:41/00:00:00, H
(10.20.1.15, 230.13.13.1), 00:14:31/00:01:40, flags:CJT
Incoming interface:GigabitEthernet4/8, RPF nbr 10.15.1.20, RPF-MFD
GigabitEthernet4/9, Forward/Sparse-Dense, 00:14:31/00:00:00, H
(132.206.72.28, 224.2.136.89), 00:14:31/00:01:40, flags:CJT
Incoming interface:GigabitEthernet4/8, RPF nbr 10.15.1.20, RPF-MFD
Outgoing interface list:Null
This example shows how to display the rate that active sources are sending to multicast groups and to display only active sources sending at greater than the default rate:
Switch# show ip mroute active
Active IP Multicast Sources - sending >= 4 kbps
Group: 224.2.127.254, (sdr.cisco.com)
Source: 146.137.28.69 (mbone.ipd.anl.gov)
Rate: 1 pps/4 kbps(1sec), 4 kbps(last 1 secs), 4 kbps(life avg)
Group: 224.2.201.241, ACM 97
Source: 130.129.52.160 (webcast3-e1.acm97.interop.net)
Rate: 9 pps/93 kbps(1sec), 145 kbps(last 20 secs), 85 kbps(life avg)
Group: 224.2.207.215, ACM 97
Source: 130.129.52.160 (webcast3-e1.acm97.interop.net)
Rate: 3 pps/31 kbps(1sec), 63 kbps(last 19 secs), 65 kbps(life avg)
This example shows how to display route and packet count information:
Switch# show ip mroute count
56 routes using 28552 bytes of memory
13 groups, 3.30 average sources per group
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts:Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group:224.2.136.89, Source count:1, Group pkt count:29051
Source:132.206.72.28/32, Forwarding:29051/-278/1186/0, Other:85724/8/56665
This example shows how to display summary information:
Switch# show ip mroute summary
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, s - SSM Group, C - Connected, L - Local,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
J - Join SPT, M - MSDP created entry, X - Proxy Join Timer Running
A - Advertised via MSDP, U - URD, I - Received Source Specific Host
Outgoing interface flags: H - Hardware switched
Interface state: Interface, Next-Hop or VCD, State/Mode
Table 2-16 describes the fields shown in the output.
Table 2-16 show ip mroute Field Descriptions
Field
|
Description
|
Flags:
|
Information about the entry.
|
D - Dense
|
Entry is operating in dense mode.
|
S - Sparse
|
Entry is operating in sparse mode.
|
s - SSM Group
|
Entry is a member of an SSM group.
|
C - Connected
|
Member of the multicast group is present on the directly connected interface.
|
L - Local
|
Switch itself is a member of the multicast group.
|
P - Pruned
|
Route has been pruned. This information is retained in case a downstream member wants to join the source.
|
R - Rp-bit set
|
Status of the (S,G) entry; is the (S,G) entry pointing toward the RP. The R - Rp-bit set is typically a prune state along the shared tree for a particular source.
|
F - Register flag
|
Status of the software; is the software registered for a multicast source.
|
T - SPT-bit set
|
Status of the packets; have the packets been received on the shortest path source tree.
|
J - Join SPT
|
For (*, G) entries, indicates that the rate of traffic flowing down the shared tree is exceeding the SPT-Threshold set for the group. (The default SPT-Threshold setting is 0 kbps.) When the J - Join SPT flag is set, the next (S,G) packet received down the shared tree triggers an (S,G) join in the direction of the source causing the switch to join the source tree.
For (S, G) entries, indicates that the entry was created because the SPT-Threshold for the group was exceeded. When the J - Join SPT flag is set for (S,G) entries, the switch monitors the traffic rate on the source tree and attempts to switch back to the shared tree for this source if the traffic rate on the source tree falls below the group's SPT-Threshold for more than one minute.
The switch measures the traffic rate on the shared tree and compares the measured rate to the group's SPT-Threshold once every second. If the traffic rate exceeds the SPT-Threshold, the J- Join SPT flag is set on the (*, G) entry until the next measurement of the traffic rate. The flag is cleared when the next packet arrives on the shared tree and a new measurement interval is started.
If the default SPT-Threshold value of 0 Kbps is used for the group, the J- Join SPT flag is always set on (*, G) entries and is never cleared. When the default SPT-Threshold value is used, the switch immediately switches to the shortest-path tree when traffic from a new source is received.
|
Outgoing interface flag:
|
Information about the outgoing entry.
|
H - Hardware switched
|
Entry is hardware switched.
|
Timer:
|
Uptime/Expires.
|
Interface state:
|
Interface, Next-Hop or VCD, State/Mode.
|
(*, 224.0.255.1) (198.92.37.100/32, 224.0.255.1)
|
Entry in the IP multicast routing table. The entry consists of the IP address of the source switch followed by the IP address of the multicast group. An asterisk (*) in place of the source switch indicates all sources.
Entries in the first format are referred to as (*,G) or "star comma G" entries. Entries in the second format are referred to as (S,G) or "S comma G" entries. (*,G) entries are used to build (S,G) entries.
|
uptime
|
How long (in hours, minutes, and seconds) the entry has been in the IP multicast routing table.
|
expires
|
How long (in hours, minutes, and seconds) until the entry is removed from the IP multicast routing table on the outgoing interface.
|
RP
|
Address of the RP switch. For switches and access servers operating in sparse mode, this address is always 0.0.0.0.
|
flags:
|
Information about the entry.
|
Incoming interface
|
Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.
|
RPF neighbor
|
IP address of the upstream switch to the source. "Tunneling" indicates that this switch is sending data to the RP encapsulated in Register packets. The hexadecimal number in parentheses indicates to which RP it is registering. Each bit indicates a different RP if multiple RPs per group are used.
|
Dvmrp or Mroute
|
Status of whether the RPF information is obtained from the DVMRP routing table or the static mroutes configuration.
|
Outgoing interface list
|
Interfaces through which packets are forwarded. When the ip pim nbma-mode command is enabled on the interface, the IP address of the PIM neighbor is also displayed.
|
Ethernet0
|
Name and number of the outgoing interface.
|
Next hop or VCD
|
Next hop specifies downstream neighbor's IP address. VCD specifies the virtual circuit descriptor number. VCD0 means the group is using the static-map virtual circuit.
|
Forward/Dense
|
Status of the packets; are they forwarded on the interface if there are no restrictions due to access lists or the TTL threshold. Following the slash (/), mode in which the interface is operating (dense or sparse).
|
Forward/Sparse
|
Sparse mode interface is in forward mode.
|
time/time (uptime/expiration time)
|
Per interface, how long (in hours, minutes, and seconds) the entry has been in the IP multicast routing table. Following the slash (/), how long (in hours, minutes, and seconds) until the entry is removed from the IP multicast routing table.
|
Related Commands
ip multicast-routing (refer to Cisco IOS documentation)
ip pim (refer to Cisco IOS documentation)
show mac-address-table address
To display MAC address table information for a specific MAC address, use the show mac-address-table address command.
show mac-address-table address mac_addr [interface type slot/port | protocol protocol | vlan
vlan_id]
Syntax Description
mac_addr
|
48-bit MAC address; the valid format is H.H.H.
|
interface type slot/port
|
(Optional) Displays information for a specific interface; valid values for type are FastEthernet and GigabitEthernet.
|
protocol protocol
|
(Optional) Specifies a protocol. See "Usage Guidelines."
|
vlan vlan_id
|
(Optional) Displays entries for the specific VLAN only; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal vlan number.
The keyword definitions for the protocol variable are as follows:
•
ip specifies IP protocol.
•
ipx specifies IPX protocols.
•
assigned specifies assigned protocol entries.
•
other specifies other protocol entries.
Examples
This example shows how to display MAC address table information for a specific MAC address:
Switch# show mac-address-table address 0030.94fc.0dff
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/2 0030.94fc.0dff static ip,ipx,assigned,other Switch
Related Commands
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 multicast
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table aging-time
To display the MAC address aging time, use the show mac-address-table aging-time command.
show mac-address-table aging-time [vlan vlan_id]
Syntax Description
vlan vlan_id
|
(Optional) Specifies a VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for extended addressing was added.
|
Examples
This example shows how to display the currently configured aging time for all VLANs:
Switch# show mac-address-table aging-time
This example shows how to display the currently configured aging time for a specific VLAN:
Switch# show mac-address-table aging-time vlan 100
Related Commands
show mac-address-table address
show mac-address-table count
show mac-address-table dynamic
show mac-address-table interface
show mac-address-table multicast
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table count
To display the number of entries currently in the MAC address table, use the show mac-address-table count command.
show mac-address-table count [vlan vlan_id]
Syntax Description
vlan vlan_id
|
(Optional) Specifies a VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Examples
This example shows how to display the entry count for a specific VLAN:
Switch# show mac-address-table count vlan 1
Dynamic Unicast Address Count: 0
Static Unicast Address (User-defined) Count: 0
Static Unicast Address (System-defined) Count: 1
Total Unicast MAC Addresses In Use: 1
Total Unicast MAC Addresses Available: 32768
Multicast MAC Address Count: 1
Total Multicast MAC Addresses Available: 16384
Related Commands
show mac-address-table address
show mac-address-table aging-time
show mac-address-table dynamic
show mac-address-table interface
show mac-address-table multicast
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table dynamic
To display dynamic MAC address table entries only, use the show mac-address-table dynamic command.
show mac-address-table dynamic [address mac_addr | interface type slot/port | protocol protocol
| vlan vlan_id]
Syntax Description
address mac_addr
|
(Optional) Specifies a 48-bit MAC address; the valid format is H.H.H.
|
interface type slot/port
|
(Optional) Specifies an interface to match; valid values for type are FastEthernet and GigabitEthernet.
|
protocol protocol
|
(Optional) Specifies a protocol. See "Usage Guidelines."
|
vlan vlan_id
|
(Optional) Displays entries for a specific VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
The keyword definitions for the protocol argument are as follows:
•
assigned specifies assigned protocol entries.
•
ip specifies IP protocol.
•
ipx specifies IPX protocols.
•
other specifies other protocol entries.
The show mac-address-table dynamic command output for an EtherChannel interface changes the port number designation (for example, 5/7) to a port group number (for example, Po80).
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
Examples
This example shows how to display all dynamic MAC address entries:
Switch# show mac-address-table dynamic
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0201 dynamic ip FastEthernet6/15
1 0000.0000.0202 dynamic ip FastEthernet6/15
1 0000.0000.0203 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0204 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0205 dynamic ip,assigned FastEthernet6/15
2 0000.0000.0101 dynamic ip FastEthernet6/16
2 0000.0000.0102 dynamic ip FastEthernet6/16
2 0000.0000.0103 dynamic ip,assigned FastEthernet6/16
2 0000.0000.0104 dynamic ip,assigned FastEthernet6/16
2 0000.0000.0105 dynamic ip,assigned FastEthernet6/16
This example shows how to display dynamic MAC address entries with a specific protocol type (in this case, assigned):
Switch# show mac-address-table dynamic protocol assigned
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0203 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0204 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0205 dynamic ip,assigned FastEthernet6/15
2 0000.0000.0103 dynamic ip,assigned FastEthernet6/16
2 0000.0000.0104 dynamic ip,assigned FastEthernet6/16
2 0000.0000.0105 dynamic ip,assigned FastEthernet6/16
Related Commands
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table interface
To display the MAC address table information for a specific interface, use the show mac-address-table interface command.
show mac-address-table interface type slot/port
Syntax Description
type
|
Interface type; valid values are Ethernet, FastEthernet, and GigabitEthernet.
|
slot/port
|
Number of the slot and port.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
Examples
This example shows how to display MAC address table information for a specific interface:
Switch# show mac-address-table interface fa6/16
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
2 0000.0000.0101 dynamic other FastEthernet6/16
2 0000.0000.0102 dynamic other FastEthernet6/16
2 0000.0000.0103 dynamic other FastEthernet6/16
2 0000.0000.0104 dynamic other FastEthernet6/16
2 0000.0000.0105 dynamic other FastEthernet6/16
2 0000.0000.0106 dynamic other FastEthernet6/16
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
2 ffff.ffff.ffff system Fa6/16
Related Commands
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 multicast
show mac-address-table protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table multicast
To display multicast MAC address table information, use the show mac-address-table multicast command.
show mac-address-table multicast {vlan {vlan_num} | {igmp-snooping |user]} [count]}
Syntax Description
vlan
|
Displays VLAN MAC address table information.
|
vlan_num
|
VLAN number; valid values are from 1 to 4094.
|
igmp-snooping
|
Displays only addresses learned by IGMP snooping.
|
user
|
Displays only user-entered static addresses.
|
count
|
(Optional) Displays number of multicast entries.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
Examples
This example shows how to display multicast MAC address table information for a specific VLAN:
Switch# show mac-address-table multicast vlan 1
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
This example shows how to display the number of multicast MAC entries for all VLANs:
Switch# show mac-address-table multicast count
MAC Entries for all vlans:
Multicast MAC Address Count: 141
Total Multicast MAC Addresses Available: 16384
Related Commands
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 protocol
show mac-address-table static
show mac-address-table vlan
show mac-address-table protocol
To display MAC address table information based on the protocol, use the show mac-address-table protocol command.
show mac-address-table protocol {assigned | ip | ipx | other} [detail]
Syntax Description
assigned
|
Specifies assigned protocol entries.
|
ip
|
Specifies IP protocol entries.
|
ipx
|
Specifies IPX protocol entries.
|
other
|
Specifies other protocol entries.
|
detail
|
(Optional) Displays detailed information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
Examples
This example shows how to display MAC address table entries that have a specific protocol type (in this case, assigned):
Switch# show mac-address-table protocol assigned
vlan mac address type protocol qos ports
-----+---------------+--------+---------+---+--------------------------------
200 0050.3e8d.6400 static assigned -- Switch
100 0050.3e8d.6400 static assigned -- Switch
5 0050.3e8d.6400 static assigned -- Switch
4092 0000.0000.0000 dynamic assigned -- Switch
1 0050.3e8d.6400 static assigned -- Switch
4 0050.3e8d.6400 static assigned -- Switch
4092 0050.f0ac.3058 static assigned -- Switch
4092 0050.f0ac.3059 dynamic assigned -- Switch
1 0010.7b3b.0978 dynamic assigned -- Fa5/9
This example shows the other output for the previous example:
Switch# show mac-address-table protocol other
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0201 dynamic other FastEthernet6/15
1 0000.0000.0202 dynamic other FastEthernet6/15
1 0000.0000.0203 dynamic other FastEthernet6/15
1 0000.0000.0204 dynamic other FastEthernet6/15
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
2 0000.0000.0101 dynamic other FastEthernet6/16
2 0000.0000.0102 dynamic other FastEthernet6/16
2 0000.0000.0103 dynamic other FastEthernet6/16
2 0000.0000.0104 dynamic other FastEthernet6/16
Fa6/1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/2 0030.94fc.0dff static ip,ipx,assigned,other Switch
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
2 ffff.ffff.ffff system Fa6/16
1002 ffff.ffff.ffff system
1003 ffff.ffff.ffff system
1004 ffff.ffff.ffff system
1005 ffff.ffff.ffff system
Fa6/1 ffff.ffff.ffff system Switch,Fa6/1
Fa6/2 ffff.ffff.ffff system Switch,Fa6/2
Related Commands
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 multicast
show mac-address-table static
show mac-address-table vlan
show mac-address-table static
To display static MAC address table entries only, use the show mac-address-table static command.
show mac-address-table static [address mac_addr | interface type slot/port | protocol protocol |
vlan vlan_id]
Syntax Description
address mac_addr
|
(Optional) Specifies a 48-bit MAC address to match; the valid format is H.H.H.
|
interface type slot/port
|
(Optional) Specifies an interface to match; valid values for type are FastEthernet and GigabitEthernet.
|
protocol protocol
|
(Optional) Specifies a protocol. See "Usage Guidelines."
|
vlan vlan_id
|
(Optional) Displays entries for a specific VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
The keyword definitions for the protocol argument are as follows:
•
assigned specifies assigned protocol entries.
•
ip specifies IP protocol.
•
ipx specifies IPX protocols.
•
other specifies other protocol entries.
Examples
This example shows how to display all static MAC address entries:
Switch# show mac-address-table static
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/2 0030.94fc.0dff static ip,ipx,assigned,other Switch
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
2 ffff.ffff.ffff system Fa6/16
1002 ffff.ffff.ffff system
1003 ffff.ffff.ffff system
1004 ffff.ffff.ffff system
1005 ffff.ffff.ffff system
Fa6/1 ffff.ffff.ffff system Switch,Fa6/1
Fa6/2 ffff.ffff.ffff system Switch,Fa6/2
This example shows how to display static MAC address entries with a specific protocol type (in this case, assigned):
Switch# show mac-address-table static protocol assigned
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/1 0030.94fc.0dff static ip,ipx,assigned,other Switch
Fa6/2 0030.94fc.0dff static ip,ipx,assigned,other Switch
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
2 ffff.ffff.ffff system Fa6/16
1002 ffff.ffff.ffff system
1003 ffff.ffff.ffff system
1004 ffff.ffff.ffff system
1005 ffff.ffff.ffff system
Fa6/1 ffff.ffff.ffff system Switch,Fa6/1
Fa6/2 ffff.ffff.ffff system Switch,Fa6/2
Related Commands
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 multicast
show mac-address-table protocol
show mac-address-table vlan
show mac-address-table vlan
To display MAC address table information for a specific VLAN, use the show mac-address-table vlan command.
show mac-address-table vlan vlan_id [protocol protocol | vlan vlan_id]
Syntax Description
protocol protocol
|
(Optional) Specifies a protocol. See "Usage Guidelines."
|
vlan vlan_id
|
Number of the VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for extended addressing was added.
|
Usage Guidelines
For MAC address table entries used by routed ports, the routed port name is displayed in the "vlan" column rather than the internal VLAN number.
The keyword definitions for the protocol variable are as follows:
•
assigned specifies assigned protocol entries.
•
ip specifies IP protocol.
•
ipx specifies IPX protocols.
•
other specifies other protocol entries.
Examples
This example shows how to display MAC address table information for a specific VLAN:
Switch# show mac-address-table vlan 1
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0201 dynamic ip FastEthernet6/15
1 0000.0000.0202 dynamic ip FastEthernet6/15
1 0000.0000.0203 dynamic other FastEthernet6/15
1 0000.0000.0204 dynamic other FastEthernet6/15
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
This example shows how to display MAC address table information for a specific protocol type:
Switch# show mac-address-table vlan 100 protocol other
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0203 dynamic other FastEthernet6/15
1 0000.0000.0204 dynamic other FastEthernet6/15
1 0030.94fc.0dff static ip,ipx,assigned,other Switch
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 ffff.ffff.ffff system Switch,Fa6/15
Related Commands
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 multicast
show mac-address-table protocol
show mac-address-table static
show module
To display module information, use the show module command.
show module [mod | all]
Syntax Description
mod
|
(Optional) Number of the module; valid values vary from chassis to chassis.
|
all
|
(Optional) Displays information for all modules.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
In the Mod Sub-Module fields, the show module command displays the supervisor engine number but appends the uplink daughter card's module type and information.
Examples
This example shows how to display information for all modules:
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
2 2 Catalyst 4000 supervisor 2 (Active) WS-X6K-SUP2-2GE SAD04450LF1
3 48 48 port 10/100 mb RJ-45 fastethernet WS-X6248-RJ-45 SAD03181468
5 0 Switching Fabric Module (Active) WS-C6500-SFM SAD04420JR5
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
2 0001.6461.39c0 to 0001.6461.39c1 1.1 6.1(3) 6.2(0.97) Ok
3 00d0.bb0f.9808 to 00d0.bb0f.9837 1.0 4.2(0.24) 6.2(0.97) Ok
5 0001.0002.0003 to 0001.0002.0003 1.0 6.1(3) 6.2(0.97) Ok
Mod Sub-Module Model Serial Hw Status
--- --------------------------- --------------- --------------- ------- -------
2 Policy Feature Card 2 WS-F6K-PFC2 SAD04440HVU 1.0 Ok
2 Cat4k MSFC 2 daughterboard WS-F6K-MSFC2 SAD04430J9K 1.1 Ok
This example shows how to display information for a specific module:
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
2 2 Catalyst 4000 supervisor 2 (Active) WS-X6K-SUP2-2GE SAD04450LF1
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
2 0001.6461.39c0 to 0001.6461.39c1 1.1 6.1(3) 6.2(0.97) Ok
Mod Sub-Module Model Serial Hw Status
--- --------------------------- --------------- --------------- ------- -------
2 Policy Feature Card 2 WS-F6K-PFC2 SAD04440HVU 1.0 Ok
2 Cat4k MSFC 2 daughterboard WS-F6K-MSFC2 SAD04430J9K 1.1 Ok
show monitor
To display SPAN session information, use the show monitor command.
show monitor [session session-number] [detail]
Syntax Description
session session-number
|
(Optional) Specifies the number of the session; valid values are from 1 to 6.
|
detail
|
(Optional) Displays nondefault configuration; lines with None in the output.
|
Defaults
Only lines with nondefault configuration detail are displayed. The lines with None are not displayed.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for differing directions within a single user session.
|
Examples
This example shows how to display SPAN information for a specific session:
Destination Ports : Fa6/1
Switch(config)#monitor session 1 source interface gi1/2 tx
Destination Ports : Fa6/1
This example shows how to display SPAN information for a specific session beginning with the line that starts with "Destination":
Switch# show monitor session 1 | begin Destination
Related Commands
monitor session
show pagp
To display port channel information, use the show pagp command.
show pagp [group-number] {counters | internal | neighbor}
Syntax Description
group-number
|
(Optional) Channel group number; valid values are from 1 to 64.
|
counters
|
Specifies traffic counter information.
|
internal
|
Specifies PAgP internal information.
|
neighbor
|
Specifies PAgP neighbor information.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You can enter any show pagp command to display the active PAgP port channel information. To display the nonactive information, enter the show pagp command with a group.
Examples
This example shows how to display PAgP counter information:
Switch# show pagp counters
--------------------------------------
This example shows how to display internal PAgP information:
Switch# show pagp 1 internal
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Hello Partner PAgP Learning
Port Flags State Timers Interval Count Priority Method IfIndx
Fa5/4 SC U6/S7 30s 1 128 Any 129
Fa5/5 SC U6/S7 30s 1 128 Any 129
This example shows how to display PAgP neighbor information for all neighbors:
Switch# show pagp neighbor
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Channel group 1 neighbors
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Fa5/4 JAB031301 0050.0f10.230c 2/45 2s SAC 2D
Fa5/5 JAB031301 0050.0f10.230c 2/46 27s SAC 2D
Channel group 2 neighbors
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Fa5/6 JAB031301 0050.0f10.230c 2/47 10s SAC 2F
Fa5/7 JAB031301 0050.0f10.230c 2/48 11s SAC 2F
Related Commands
pagp learn-method
pagp port-priority
show platform chassis
To display debugging information about the chassis, modules, and ports, use the show platform chassis command.
show platform chassis [module {mod} | interface {interface-name}]
Syntax Description
module mod
|
(Optional) Displays only the information relating to a specified module.
|
interface interface-name
|
(Optional) Displays only the information relating to a specified interface.
|
Defaults
Information relating to all modules is displayed.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform cpu packet
To display CPU-related packet information, use the show platform cpu packet command.
show platform cpu packet {statistics [all] | driver}
Syntax Description
statistics
|
Displays the nonzero statistics about packets that are sent to the CPU for software processing or to be processed in hardware.
|
all
|
(Optional) Displays all the statistics (including zero statistics) about packets that are sent to the CPU for software processing or to be processed in hardware.
|
driver
|
Displays the state of the driver that dispatches packets to the CPU from the switching engine ASIC.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform crashdump
To display system information from the most recent crash, use the show platform crashdump command.
show platform crashdump
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware acl
To display the contents of various ACL-related hardware tables, use the show platform hardware acl command.
show platform hardware acl {input | output | tags | port [index] | vlan [index] | actions [index] |
entries start-index end-index [all] | sw-allocated | l4ops [all] | sw-allocated |
statistics utilization}
Syntax Description
input
|
Displays only input information.
|
output
|
Displays only output information.
|
tags
|
Displays only tag information.
|
port
|
Displays an entry if the index value is specified, or a whole table if index is not specified.
|
index
|
(Optional) Displays a table entry.
|
vlan
|
Displays an entry if the index value is specified, or a whole table if index is not specified.
|
actions
|
Displays an entry if the index value is specified, or a whole table if the index value is not specified.
|
entries
|
Displays CAM entries.
|
start-index
|
Specifies the start of the range of CAM entries.
|
end-index
|
Specifies the end of the range of CAM entries.
|
all
|
(Optional) Displays hardware tables for all hardware.
|
sw-allocated
|
Displays only software-allocated CAM entries.
|
l4ops
|
Displays Layer 4 port operations programmed in the hardware.
|
statistics utilization
|
Displays the software utilization breakdown of all the ACL-related hardware tables.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware cpu events
To display the events in various CPU-related hardware tables, use the show platform hardware cpu events command.
show platform hardware cpu events [priority]
Syntax Description
priority
|
(Optional) Displays CPU events by priority.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware ip route
To display the contents of the Layer 3 forwarding memory, use the show platform hardware ip route command.
show platform hardware ip route {network network-address-mask | input-vlan vlan-id |
output-vlan vlan-id | length network-mask-length | range start-entry-id end-entry-id |
entry entry-id | all}
Syntax Description
network network-address-mask
|
Displays only routes with source or destination addresses contained within the specified network.
|
input-vlan vlan-id
|
Displays only multicast routes using the specified RPF VLAN.
|
output-vlan vlan-id
|
Displays only routes that point to adjacencies on the specified VLAN.
|
length network-mask-length
|
Displays only routes where the network mask length of either the SRC or DST network is the length specified.
|
range
|
Displays a range of entries by ID.
|
start-entry-id
|
Specifies the start of an entry.
|
end-entry-id
|
Specifies the end of an entry.
|
entry entry-id
|
Indicates a specific entry.
|
all
|
Displays all entries.
|
Defaults
Only entries with a nonzero source or destination IP address are displayed.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware l2-lookup-cam
To display the Layer 2 lookup CAM, use the show platform hardware l2-lookup-cam command.
show platform hardware l2-lookup-cam
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware mac-address-table
To display entries in the hardware MAC address table, use the show platform hardware mac-address-table command.
show platform hardware mac-address-table [address mac-address] [vlan vlan-id] [protocol {ip
| ipx | assigned | other}] [hash-bucket 0-65535 | index 0-65535]
Syntax Description
address mac-address
|
(Optional) Displays MAC address information for a specific MAC address.
|
vlan vlan-id
|
(Optional) Displays VLAN ID information for a specific VLAN ID.
|
protocol
|
(Optional) Displays information for a specific protocol.
|
ip
|
Displays information for the IP protocol.
|
ipx
|
Displays information for the IPX protocol.
|
assigned
|
Displays information for the assigned protocol.
|
other
|
Displays information for any other protocol.
|
hash-bucket
|
(Optional) Displays information for the hash-bucket.
|
0-65535
|
Specifies a hash-bucket or index; valid values are from 0 to 65,535.
|
index
|
(Optional) Displays information for an index.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware met
To display the multicast expansion table (MET) entries, use the show platform hardware met command.
show platform hardware met {entry met-index | range min-met-index max-met-index |
chain met-index | floodset vlan-id statistics {all | index met-index}
Syntax Description
entry met-index
|
Specifies a MET entry with the met-index value.
|
range
|
Specifies a range of MET entries.
|
min-met-index
|
Specifies the minimum entry in a range of MET entries.
|
max-met-index
|
Specifies the maximum entry in a range of MET entries.
|
chain met-index
|
Specifies the MET chain with the met-index value.
|
floodset
|
Specifies the MET floodset of the VLAN ID.
|
vlan-id
|
Specifies a VLAN.
|
statistics
|
Specifies the statistics of the MET entry.
|
all
|
Displays the statistics of all MET entries.
|
index met-index
|
Displays the statistics of a particular MET entry with the met-index value; valid values are from 64,512 through 65,535.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware monitor
To display the hardware SPAN state, use the show platform hardware monitor command.
show platform hardware monitor
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for differing directions within a single user session was added.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware mrq
To display MRQ registers, use the show platform hardware mrq command.
show platform hardware mrq
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware qos
To display the contents of various QoS-related hardware tables, use the show platform hardware qos command.
show platform hardware qos {interface [interface-name] | policers {utilization | {input | output}
[index]} | table tos {selector | cos | mutation | mapping}}
Syntax Description
interface
|
Specifies the per-port QoS configuration.
|
interface-name
|
(Optional) Name of the interface.
|
policers
|
Specifies policers.
|
utilization
|
Specifies the number of policers that are currently free.
|
input
|
Specifies the input policer.
|
output
|
Specifies the output police.
|
index
|
(Optional) Specifies a hardware policer table.
|
table tos
|
Specifies a ToS table.
|
selector
|
Specifies the ToS Selector table in the hardware; determines the final source of the internal ToS value.
|
cos
|
Maps the internal ToS to transmit CoS, transmit queue table ToS.
|
mutation
|
Species the hardware ToS mutation table.
|
mapping
|
Species the mapping of internal ToS to marked-down ToS table.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform hardware stp vlan
To display the actual hardware spanning tree state for the VLAN and interface, use the show platform hardware stp vlan command.
show platform hardware stp vlan vlan-id [interface interface-name]
Syntax Description
vlan-id
|
Specifies a VLAN.
|
interface interface-name
|
(Optional) Specifies an interface on the VLAN.
|
Defaults
Hardware spanning tree state for all interfaces in the VLAN is displayed.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform health
To display comprehensive statistics on the CPU and memory utilization, use the show platform health command.
show platform health
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are when working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform logfeatures
To display currently enabled debug log features, use the show platform logfeatures command.
show platform logfeatures
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform memory address
To display the memory of an address, use the show platform memory address command.
show platform memory address {unit size | unit count}
Syntax Description
unit size
|
Specifies the unit size.
|
unit count
|
Specifies the unit count.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform nvramenv
To display the current NVRAM environment variables, use the show platform nvramenv command.
show platform nvramenv
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform portmap
To display the mapping between front panel interfaces and internal port numbering schemes, use the show platform portmap command.
show platform portmap [interface interface-name]
Syntax Description
interface interface-name
|
Specifies an interface.
|
Defaults
Mapping for all interfaces is displayed.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software acl
To display the ACL-related software state, use the show platform software acl command.
show platform software acl {input | output} {paths [vlan v] [port p] | mapping tags
[vlan-tag v] [port-tag p] {acls | features}}
Syntax Description
input
|
Specifies input ACLs.
|
output
|
Specifies output ACLs.
|
paths
|
Specifies direction paths.
|
vlan v
|
(Optional) Specifies VLAN paths.
|
port p
|
(Optional) Specifies port paths.
|
mapping tags
|
Specifies mapping tags from tag pairs to ACLs.
|
vlan-tag v
|
(Optional) Keyword to map VLAN tag pairs to ACLs or features.
|
port-tag p
|
(Optional) Keyword to map port tag pairs to ACLs or features.
|
acls
|
Specifies mapping to ACLs.
|
features
|
Specifies mapping to features.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software cpu events
To display the events in various CPU-related software tables, use the show platform software cpu events command.
show platform software cpu events
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software cpu logging
To display logging information in various CPU-related software tables, use the show platform software cpu logging command.
show platform software cpu logging
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software host-access-table
To display the software host-access-table contents, use the show platform software host-access-table command.
show platform software host-access-table {interface int}
Syntax Description
interface int
|
Specifies the interface type and number.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software monitor
To display various SPAN-related software tables, use the show platform software monitor command.
show platform software monitor {configured | operating | session-maps | all}
Syntax Description
configured
|
Specifies the configured state pushed down to the platform layer.
|
operating
|
Specifies the operating SPAN state.
|
session-maps
|
Specifies session map number between CLI session numbers used at the CLI.
|
all
|
Displays all the software monitor output.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Support for differing directions within a single user session was added.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software portchannel
To display all port channels, use the show platform software portchannel command.
show platform software portchannel
Syntax Description
This command has no arguments or keywords.
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show platform software stp
To display various STP-related software tables, use the show platform software stp command.
show platform software stp {vlan vlan id} [interface interface-name]
Syntax Description
vlan
|
Specifies the VLAN.
|
vlan id
|
Number of the VLAN.
|
interface
|
(Optional) Displays the interface.
|
interface-name
|
(Optional) Name of the interface; no interfacename displays all interfaces on the VLAN.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(12c)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
show policy-map
To display policy map information, use the show policy-map command.
show policy-map
show policy-map policy_map_name
Syntax Description
policy_map_name
|
Name of the policy map.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Examples
This example shows how to display policy map information for all policy maps:
This example shows how to display policy map information for a specific policy map:
Switch# show policy-map ipp5-policy
Related Commands
class-map
policy-map
show class-map
show policy-map interface
show policy-map interface
To display statistics and configurations of input and output policies attached to an interface, use the show policy-map interface command.
show policy-map interface [{FastEthernet interface-number} | {GigabitEthernet
interface-number} | {Port-channel number} | {vlan vlan_id}] [input | output]
Syntax Description
FastEthernet interface-number
|
(Optional) Specifies the Fast Ethernet 802.3 interface.
|
GigabitEthernet interface-number
|
(Optional) Specifies the Gigabit Ethernet 802.3z interface.
|
Port-channel number
|
(Optional) Specifies the port channel.
|
vlan vlan_id
|
(Optional) Specifies the VLAN ID; valid values are from 1 to 4094.
|
input
|
(Optional) Specifies input policies only.
|
output
|
(Optional) Specifies output policies only.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
12.1(12c)EW
|
Added support for extended VLAN addresses.
|
Examples
This example shows how to display statistics and configurations of all input and output policies attached to an interface:
Switch# show policy-map interface
service-policy input:ipp5-policy
class-map:ipp5 (match-all)
class-map:class-default (match-any)
service-policy output:ipp5-policy
class-map:ipp5 (match-all)
class-map:class-default (match-any)
This example shows how to display input policy statistics and configurations for a specific interface:
Switch# show policy-map interface fastethernet 5/36 input
service-policy input:ipp5-policy
class-map:ipp5 (match-all)
class-map:class-default (match-any)
Related Commands
class-map
policy-map
show class-map
show qos
show power
To display the status of power information, use the show power command.
show power [available | module | status | supplies] | [inline [interface] [mod/port]]
Syntax Description
available
|
(Optional) Displays available system power.
|
module
|
(Optional) Displays power information for each module.
|
status
|
(Optional) Displays power supply status.
|
supplies
|
(Optional) Displays the number of power supplies needed by the system.
|
inline
|
(Optional) Displays inline power information.
|
interface
|
(Optional) Type of interface; the only valid value is FastEthernet.
|
mod/port
|
(Optional) Number of the module and port.
|
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.1(8a)EW
|
Support for this command was introduced on the Catalyst 4500 series switch.
|
Usage Guidelines
If a Cisco IP phone is connected to an interface with external power, the switch does not recognize the phone. The Device column in the show power inline command displays as unknown.
If your port is not capable of supporting inline power, you will receive the following error message:
inline power not supported on interface Admin
Examples
This example shows how to display general power supply information:
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------ ------
PS1 PWR-C45-2800AC AC 2800W good good good
PS2 PWR-C45-2800AC AC 2800W good good good
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
PS1 1400 1400 1360 1360 2800
PS2 1400 1400 1360 1360 2800
(in Watts) Available Used Remaining
------------- --------- ------ ---------
System Power 1360 280 1080
Maximum Power 2800 280 2520
Power supplies needed by system: 1
Mod Model (online) (in Reset)
---- ----------------- ---------- ----------
This example shows how to display the amount of available system power:
Switch# show power available
(in Watts) Available Used Remaining
------------- --------- ------ ---------
System Power 1360 280 1080
Maximum Power 2800 280 2520
This example shows how to display the power status information:
Switch# show power status
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------ ------
PS1 PWR-C45-2800AC AC 2800W good good good
PS2 PWR-C45-2800AC AC 2800W good good good
Power Supply Max Min Max Min Absolute
(Nos in Watts) Inline Inline System System Maximum
-------------- ------ ------ ------ ------ --------
PS1 1400 1400 1360 1360 2800
PS2 1400 1400 1360 1360 2800
This example shows how to display the number of power supplies needed by the system:
Switch# show power supplies
Power supplies needed by system = 2
This example shows how to display the status of inline-power:
Switch# show power inline
Interface Admin Oper Power Device
---------- ----- ---------- ------- -------------------
Fa5/3 auto on 5.0 Cisco IP Phone 7960