Catalyst 6500 Series Cisco IOS Command Reference, 12.1 E - show queueing to show vtp [Cisco Catalyst 6500 Series Switches]

Table Of Contents

show queueing interface

show redundancy

show rom-monitor

show rpc

show running-config

show scp

show slot0:

show spanning-tree

show spanning-tree mst

show standby delay

show sup-bootflash

show tcam counts

show tcam interface

show tech-support

show udld

show version

show vlan

show vlan access-log

show vlan access-map

show vlan counters

show vlan dot1q tag native

show vlan filter

show vlan internal usage

show vlan mapping

show vlan private-vlan

show vlan remote-span

show vlans

show vtp

2

show queueing interface

To display queueing information, use the show queueing interface command.

show queueing interface {{interface interface-number} | {null interface-number} | {vlan vlan-id}}
Syntax Description

interface

Interface type; possible valid values are ethernet, fastethernet, gigabitethernet, tengigabitethernet, pos, atm, and ge-wan.

interface-number

Module and port number; see the "Usage Guidelines" section for valid values.

null interface-number

Specifies the null interface; the valid value is 0.

vlan vlan-id

Specifies the VLAN ID; valid values are from 1 to 4094.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

12.1(11b)E

This command was changed to include the ge-wan, atm, and pos keywords.

12.1(11b)EX

The command was changed to support extended-range VLANs.

12.1(13)E

This command was changed to include extended trust information in the output.

Usage Guidelines

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module installed in a 13-slot chassis, valid values for the module number are from 2 to 13 and valid values for the port number are from 1 to 48.

If your system is configured with a Supervisor Engine 1, valid values for vlan-id are from 1 to 1005. If your system is configured with a Supervisor Engine 2, valid values for vlan-id are from 1 to 4094. Extended-range VLANs are not supported on systems configured with a Supervisor Engine 1.

The show queueing interface command does not display absolute values programmed into the hardware. You can use the show qm-sp port-data command to verify values programmed in hardware.

Examples

This example shows how to display queueing information:
Router# show queueing interface fastethernet 5/1
Interface FastEthernet5/1 queueing strategy:  Weighted Round-Robin
  Port QoS is enabled
  Port is untrusted
  Extend trust state: trusted
  Default COS is 0
  Transmit queues [type = 2q2t]:
    Queue Id    Scheduling  Num of thresholds
    -----------------------------------------
       1         WRR low             2
       2         WRR high            2
    WRR bandwidth ratios:  100[queue 1] 255[queue 2] 
    queue-limit ratios:     70[queue 1]  30[queue 2] 
    queue tail-drop-thresholds
    --------------------------
    1     80[1] 100[2] 
    2     80[1] 100[2] 
    queue thresh cos-map
    ---------------------------------------
    1     1      0 1 
    1     2      2 3 
Router# 
show redundancy

To display RF information, use the show redundancy command.

show redundancy {clients | counters | history | states | switchover}
Syntax Description

clients

Displays the redundancy facility client information.

counters

Displays the redundancy facility counter information.

history

Displays a log of past status and related information for the redundancy facility.

states

Displays the redundancy facility state information.

switchover

Displays the switchover counts, the uptime since active, and the total system uptime.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.1(11b)EX

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(13)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release. This command was changed to add the switchover option.

Examples

This example shows how to display information about the RF client:
Router# show redundancy clients
 clientID = 0       clientSeq = 0        RF_INTERNAL_MSG
 clientID = 25      clientSeq = 130      CHKPT RF
 clientID = 5026    clientSeq = 130      CHKPT RF
 clientID = 5029    clientSeq = 135      Redundancy Mode RF
 clientID = 5006    clientSeq = 170      RFS client
 clientID = 6       clientSeq = 180      Const OIR Client
 clientID = 7       clientSeq = 190      PF Client
 clientID = 5008    clientSeq = 190      PF Client
 clientID = 28      clientSeq = 330      Const Startup Config
 clientID = 29      clientSeq = 340      Const IDPROM Client
 clientID = 65000   clientSeq = 65000    RF_LAST_CLIENT
Router# 
The output displays the following information:

•clientID displays the client's ID number.

•clientSeq displays the client's notification sequence number.

•Current RF state.

This example shows how to display information about the redundancy facility counter:
Router# show redundancy counters
Redundancy Facility OMs
               comm link up = 0
        comm link down down = 0
          invalid client tx = 0
          null tx by client = 0
                tx failures = 0
      tx msg length invalid = 0
      client not rxing msgs = 0
 rx peer msg routing errors = 0
           null peer msg rx = 0
        errored peer msg rx = 0
                 buffers tx = 0
     tx buffers unavailable = 0
                 buffers rx = 0
      buffer release errors = 0
 duplicate client registers = 0
  failed to register client = 0
       Invalid client syncs = 0
Router# 
This example shows how to display information about the RF history:
Router# show redundancy history
00:00:00 client added: RF_INTERNAL_MSG(0) seq=0
00:00:00 client added: RF_LAST_CLIENT(65000) seq=65000
00:00:02 client added: Const Startup Config Sync Clien(28) seq=330
00:00:02 client added: CHKPT RF(25) seq=130
00:00:02 client added: PF Client(7) seq=190
00:00:02 client added: Const OIR Client(6) seq=180
00:00:02 client added: Const IDPROM Client(29) seq=340
00:00:02 *my state = INITIALIZATION(2) *peer state = DISABLED(1)
00:00:02 RF_PROG_INITIALIZATION(100) RF_INTERNAL_MSG(0) op=0 rc=11
00:00:02 RF_PROG_INITIALIZATION(100) CHKPT RF(25) op=0 rc=11
00:00:02 RF_PROG_INITIALIZATION(100) Const OIR Client(6) op=0 rc=11
00:00:02 RF_PROG_INITIALIZATION(100) PF Client(7) op=0 rc=11
.
.
.
This example shows how to display information about the RF state:
Router# show redundancy states
       my state = 13 -ACTIVE
     peer state = 1  -DISABLED
           Mode = Simplex
           Unit = Primary
        Unit ID = 1
Redundancy Mode (Operational) = Route Processor Redundancy
Redundancy Mode (Configured)  = Route Processor Redundancy
     Split Mode = Disabled
   Manual Swact = Disabled  Reason: Simplex mode
 Communications = Down      Reason: Simplex mode
   client count = 11
 client_notification_TMR = 30000 milliseconds
          keep_alive TMR = 4000 milliseconds
        keep_alive count = 0
    keep_alive threshold = 7
           RF debug mask = 0x0
Router#
This example shows how to display the switchover counts, the uptime since active, and the total system uptime:
Router# show redundancy switchover
Switchovers this system has experienced          : 1
Uptime since this supervisor switched to active  : 1 minute
Total system uptime from reload                  : 2 hours, 47 minutes
Router#
Related Commands

mode
redundancy
redundancy force-switchover

show rom-monitor

To display the ROMMON status, use the show rom-monitor command.

show rom-monitor {slot num} {sp | rp}
Syntax Description

slot num

Slot number of the ROMMON of which status is to be displayed.

sp

Displays the ROMMON status of the switch processor.

rp

Displays the ROMMON status of the route processor.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.1(3a)E1

Support for this command was introduced on the Catalyst 6500 series switches.

Usage Guidelines

When you enter the show rom-monitor command, the output displays the following:

•Region region1 and region2—This displays the status of the ROMMON image and the order of preference that region1 or region2 images should be booted from. The ROMMON image status values are as follows:

–First run—Indicates that a check of the new image is being run.

–Invalid—Indicates that the new image has been checked and the upgrade process has started.

–Approved—Indicates that the ROMMON field upgrade process has completed.

•Currently running—This field displays the currently running image and the region.

The sp or rp keyword is required only if a supervisor engine is installed in the specified slot.

Examples

This example shows how to display ROMMON information:
Router# show rom-monitor slot 1 sp
   Region F1:APPROVED
   Region F2:FIRST_RUN, preferred
   Currently running ROMMON from F1 region  
Router#  
Related Commands

upgrade rom-monitor

show rpc

To display RPC information, use the show rpc command.

show rpc {applications | counters | status}
Syntax Description

applications

Displays RPC application information.

counters

Displays RPC counters.

status

Displays RPC status.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

Examples

This example shows how to display RPC applications:
Router# show rpc applications
  ID Dest Callback Application
   1 0011 <remote> rpc-master
   2 0011 <remote> cygnus-oir
   3 0021 60201708 rpc-slave-33
   4 0021 6022A514 idprom-MP
   5 0021 60204420 msfc-oir
   6 0011 <remote> Nipcon-SP
   7 0011 <remote> sw_vlan_sp
   8 0011 <remote> stp_switch_api
   9 0011 <remote> pagp_rpc
  10 0011 <remote> span_switch_rpc
  11 0011 <remote> pf_rp_rpc
  13 0011 <remote> mapping_sp
  14 0011 <remote> logger-sp
  17 0011 <remote> c6k_power_sp
  18 0011 <remote> c6k_sp_environmental
  19 0011 <remote> pagp_switch_rpc
  20 0011 <remote> pm-cp
  21 0021 602675B0 Nipcon-RP
  22 0021 602283B0 pm-mp
  23 0021 601F2538 sw_vlan_rp
  24 0021 601F77D0 span_switch_sp_rpc
  25 0021 601F7950 idbman_fec
  26 0021 601F7F30 logger-rp
  27 0021 601F80D8 pagp_switch_l3_split
  28 0021 601F81C0 pagp_switch_sp2mp
  29 0021 6026F190 c6k_rp_environmental                            
Router# 
This example shows how to display RPC counter information:
Router# show rpc counters
  ID Dest Rcv-req  Xmt-req  Q size   Application
   1 0011 0        26       0        rpc-master
   2 0011 0        6221     0        cygnus-oir
   4 0021 15       0        0        idprom-MP
   5 0021 6222     0        0        msfc-oir
   7 0011 0        2024     0        sw_vlan_sp
   8 0011 0        3        0        stp_switch_api
   9 0011 0        188      0        pagp_rpc
  11 0011 0        4        0        pf_rp_rpc
  13 0011 0        2        0        mapping_sp
  14 0011 0        3        0        logger-sp
  17 0011 0        2        0        c6k_power_sp
  18 0011 0        66       0        c6k_sp_environmental
  19 0011 0        109      0        pagp_switch_rpc
  20 0011 0        33       0        pm-cp
  22 0021 126      0        0        pm-mp
  23 0021 5        0        0        sw_vlan_rp
  24 0021 14       0        0        span_switch_sp_rpc
  25 0021 22       0        0        idbman_fec
  26 0021 8        0        0        logger-rp
  27 0021 3        0        0        pagp_switch_l3_split
  28 0021 3        0        0        pagp_switch_sp2mp
Router# 
show running-config

To display module or Layer 2 VLAN status and configuration, use the show running-config command.

show running-config [{module number} | {vlan vlan-id}]
Syntax Description

module number

(Optional) Specifies the module number.

vlan vlan-id

(Optional) Specifies the VLAN information to display; valid values are from 1 to 4094.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

12.1(11b)E

This command was changed to include autonegotiation information.

12.1(11b)EX

This command was changed to support the vlan vlan-id option and extended-range VLANs.

Usage Guidelines

In some cases, you might see a difference in the duplex mode displayed between the show interfaces command and the show running-config command. In this case, the duplex mode displayed in the show interfaces command is the actual duplex mode that the interface is running. The show interfaces command shows the operating mode for an interface, while the show running-config command shows the configured mode for an interface.

The show running-config command output for an interface might display a duplex mode configuration but no configuration for the speed. This output indicates that the interface speed is configured to be auto and that the duplex mode shown becomes the operational setting once the speed is configured to something other than auto. With this configuration, it is possible that the operating duplex mode for that interface does not match the duplex mode shown with the show running-config command.

If your system is configured with a Supervisor Engine 1, valid values for vlan-id are from 1 to 1005. If your system is configured with a Supervisor Engine 2, valid values for vlan-id are from 1 to 4094. Extended-range VLANs are not supported on systems configured with a Supervisor Engine 1.

Examples

This example shows how to display the module and status configuration for all modules:
Router# show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug datetime localtime
service timestamps log datetime localtime
no service password-encryption
!
hostname Router
!
boot buffersize 126968
boot system flash slot0:halley
boot bootldr bootflash:c6msfc-boot-mz.120-6.5T.XE1.0.83.bin
enable password lab
!
clock timezone Pacific -8
clock summer-time Daylight recurring
redundancy
 main-cpu
  auto-sync standard
!                                       
ip subnet-zero
!
ip multicast-routing
ip dvmrp route-limit 20000
ip cef
mls flow ip destination
mls flow ipx destination
cns event-service server
!
spanning-tree portfast bpdu-guard
spanning-tree uplinkfast
spanning-tree vlan 200 forward-time 21
port-channel load-balance sdip
!
!
!
interface Port-channel2
 no ip address
 switchport
 switchport access vlan 10
 switchport mode access
!
interface GigabitEthernet1/1
 no ip address
 no ip directed-broadcast
 sync-restart-delay 600 
 shutdown
!
!
.
.
.
Related Commands

queue-list (refer to the Cisco IOS Release 12.1 Command Reference)

show scp

To display SCP information, use the show scp command.

show scp {accounting | counters | {linecards [details]} | {{mcast [group group-id} | inst]} | {process id} | status}
Syntax Description

accounting

Displays SCP accounting information.

counters

Displays SCP counter information.

linecards

Displays the OSM WAN modules in the chassis.

details

(Optional) Displays detailed OSM WAN module information.

mcast

Displays SCP multicast information.

group group-id

(Optional) Displays the information for a specific group and group ID; valid values are from 1 to 127.

inst

(Optional) Displays information for an instance.

process id

Displays information for a specific process and process ID.

status

Displays local SCP server status information.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

Examples

This example shows how to display the process name and the number of messages that are received and transmitted:
Router# show scp process
PID Process          Msgs       Msgs       NMP Tx Q     Msgs       Bufs  Rx Q  Rx Q
                     Sent       Resent     in Overflow		 Rcvd       Held  Size  Oflow
--- ---------------- ---------- ---------- ------------ ---------- ----- ----- ----------
0   Kernel and Idle  2          0          0            0          0     0     0
1   Flash MIB Updat  0          0          0            0          0     0     0
2   SynDiags         1410	       0          0            1410       0     4     0
3   SynConfig        2          0          0            3481603    0     64    0
4   Statuspoll       3481589    0          0            0          0     2     0
5 SL_TASK            0          0          0            0          0     24    0
.
.
.
show slot0:

To display information about the slot0: file system, use the show slot0: command.

show slot0: [all | chips | filesys]
Syntax Description

all

(Optional) Displays all Flash information including the output from the show slot0: chips and show slot0: filesys commands.

chips

(Optional) Displays information about the Flash chip.

filesys

(Optional) Displays information about the file system.

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

Examples

This example shows how to display a summary of image information:
Router> show slot0:
-#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name
1   .. image    6375DBB7  A4F144    6 10678468 Nov 09 1999 10:50:42 halley
5705404 bytes available (10678596 bytes used) 
Router>
This example shows how to display Flash chip information:
Router> show slot0: chips
******** Intel Series 2+ Status/Register Dump ********
ATTRIBUTE MEMORY REGISTERS:
  Config Option Reg (4000): 2
  Config Status Reg (4002): 0
  Card Status   Reg (4100): 1
  Write Protect Reg (4104): 4
  Voltage Cntrl Reg (410C): 0
  Rdy/Busy Mode Reg (4140): 2
COMMON MEMORY REGISTERS: Bank 0
  Intelligent ID Code  : 8989A0A0
  Compatible Status Reg: 8080
  Global     Status Reg: B0B0
  Block Status Regs:
    0  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    8  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    16 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    24 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
COMMON MEMORY REGISTERS: Bank 1
  Intelligent ID Code  : 8989A0A0
  Compatible Status Reg: 8080
  Global     Status Reg: B0B0
  Block Status Regs:
    0  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    8  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    16 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    24 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
COMMON MEMORY REGISTERS: Bank 2
  Intelligent ID Code  : 8989A0A0
  Compatible Status Reg: 8080
  Global     Status Reg: B0B0
  Block Status Regs:
    0  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    8  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    16 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    24 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
COMMON MEMORY REGISTERS: Bank 3
  Intelligent ID Code  : 8989A0A0
  Compatible Status Reg: 8080
  Global     Status Reg: B0B0
  Block Status Regs:
    0  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    8  :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    16 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
    24 :  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0  B0B0
COMMON MEMORY REGISTERS: Bank 4
  Intelligent ID Code  : FFFFFFFF
    IID Not Intel -- assuming bank not populated
Router>      
This example shows how to display file system information:
Router> show slot0: filesys
-------- F I L E   S Y S T E M   S T A T U S --------
  Device Number = 0
DEVICE INFO BLOCK: slot0
  Magic Number          = 6887635   File System Vers = 10000    (1.0)
  Length                = 1000000   Sector Size      = 20000
  Programming Algorithm = 4         Erased State     = FFFFFFFF
  File System Offset    = 20000     Length = FA0000
  MONLIB Offset         = 100       Length = F568
  Bad Sector Map Offset = 1FFF0     Length = 10
  Squeeze Log Offset    = FC0000    Length = 20000
  Squeeze Buffer Offset = FE0000    Length = 20000
  Num Spare Sectors     = 0
    Spares:
STATUS INFO:
  Writable
  NO File Open for Write
  Complete Stats
  No Unrecovered Errors
  No Squeeze in progress
USAGE INFO:
  Bytes Used     = 9F365C  Bytes Available = 5AC9A4
  Bad Sectors    = 0       Spared Sectors  = 0
  OK Files       = 1       Bytes = 9F35DC
  Deleted Files  = 0       Bytes = 0
  Files w/Errors = 0       Bytes = 0
Router>                                                
show spanning-tree

To display information about the spanning tree state, use the show spanning-tree command.

show spanning-tree [bridge-group | active | backbonefast | {bridge [id]}| detail | inconsistentports | {interface interface interface-number} | root | summary [total] | uplinkfast | {vlan vlan-id} | {port-channel number} | pathcost-method]
Syntax Description

bridge-group

(Optional) Specifies the bridge group number; valid values are from 1 to 255.

active

(Optional) Displays spanning tree information on active interfaces only.

backbonefast

(Optional) Displays spanning tree BackboneFast status.

bridge [id]

(Optional) Displays bridge status and configuration information.

detail

(Optional) Displays detailed information.

inconsistentports

(Optional) Displays root inconsistency state.

interface interface

(Optional) Interface type and number; possible valid values for type are ethernet, fastethernet, gigabitethernet, tengigabitethernet, pos, atm, and ge-wan.

interface-number

(Optional) Module and port number; see the "Usage Guidelines" section for valid values.

root

(Optional) Displays root bridge status and configuration.

summary

(Optional) Specifies a summary of port states.

total

(Optional) Displays the total lines of the spanning tree state
section.

uplinkfast

(Optional) Displays spanning tree UplinkFast status.

vlan vlan-id

(Optional) Specifies the VLAN ID; see the "Usage Guidelines" section for valid values.

port-channel number

(Optional) Specifies the channel interface; see the "Usage Guidelines" section for valid values.

pathcost-method

(Optional) Displays the default path cost calculation method used.

Defaults

This command has no default settings.

Command Modes

Priviledged EXEC

Command History

Release

Modification

12.0(7)XE

Support for this command was introduced on the Catalyst 6500 series switches.

12.1(1)E

Support for this command on the Catalyst 6500 series switches was extended to the 12.1 E release.

12.1(3a)E3

The number of valid values for port-channel changed; see the "Usage Guidelines" section for valid values.

12.1(11b)E

This command was changed to include the ge-wan, atm, and pos keywords.

12.1(11b)EX

This command was changed to support extended-range VLANs and MST.

12.1(13)E

This command was changed by removing the wide option, replacing the brief option with detail, displaying the port priority as part of the port ID, removing the priority column, and supporting the long cost format.

Usage Guidelines

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module installed in a 13-slot chassis, valid values for the module number are from 2 to 13 and valid values for the port number are from 1 to 48.

The number of valid values for port-channel num depends on the software release. For releases prior to Release 12.1(3a)E3, valid values are from 1 to 256; for Releases 12.1(3a)E3, 12.1(3a)E4, and 12.1(4)E1, valid values are from 1 to 64. Release 12.1(5c)EX and later support a maximum of 64 values ranging from 1 to 256. Release 12.1(13)E and later support a maximum of 64 values ranging from 1 to 282; values 257 to 282 are supported on the CSM and FWSM.

If your system is configured with a Supervisor Engine 1, valid values for vlan-id are from 1 to 1005. If your system is configured with a Supervisor Engine 2, valid values for vlan-id are from 1 to 4094. Extended-range VLANs are not supported on systems configured with a Supervisor Engine 1.

When checking spanning tree active states and you have a large number of VLANs, you can enter the show spanning-tree summary total command to display the total number without having to scroll through the list of VLANs.

Examples

This example shows how to display a summary of interface information:
Router# show spanning-tree
VLAN0001
  Spanning tree enabled protocol ieee
  Root ID    Priority    4097
             Address     0004.9b78.0800
             This bridge is the root
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
  Bridge ID  Priority    4097   (priority 4096 sys-id-ext 1)
             Address     0004.9b78.0800
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time 15 
Interface        Port ID                     Designated                Port ID
Name             Prio.Nbr      Cost Sts      Cost Bridge ID            Prio.Nbr
---------------- -------- --------- --- --------- -------------------- --------
Gi2/1            128.65           4 LIS         0  4097 0004.9b78.0800 128.65  
Gi2/2            128.66           4 LIS         0  4097 0004.9b78.0800 128.66  
Fa4/3            128.195         19 LIS         0  4097 0004.9b78.0800 128.195 
Fa4/4            128.196         19 BLK         0  4097 0004.9b78.0800 128.195 
Router#
Table 2-40 lists the output fields and definitions.

Table 2-40 show spanning-tree Command Output Fields

Field

Definition

Port ID Prio.Nbr

Port ID and priority number.

Cost

Port cost.

Sts

Displays status information.

This example shows how to display spanning tree information on active interfaces only:
Router# show spanning-tree active
UplinkFast is disabled
BackboneFast is disabled
 VLAN1 is executing the ieee compatible Spanning Tree protocol
  Bridge Identifier has priority 32768, address 0050.3e8d.6401
  Configured hello time 2, max age 20, forward delay 15
  Current root has priority 16384, address 0060.704c.7000
  Root port is 265 (FastEthernet5/9), cost of root path is 38
  Topology change flag not set, detected flag not set
  Number of topology changes 0 last change occurred 18:13:54 ago
  Times:  hold 1, topology change 24, notification 2
          hello 2, max age 14, forward delay 10
  Timers: hello 0, topology change 0, notification 0
 Port 265 (FastEthernet5/9) of VLAN1 is forwarding
   Port path cost 19, Port priority 128, Port Identifier 129.9.
   Designated root has priority 16384, address 0060.704c.7000
   Designated bridge has priority 32768, address 00e0.4fac.b000
.
.
.
Router#
This example shows how to display spanning tree BackboneFast status:
Router# show spanning-tree backbonefast
BackboneFast is enabled
 
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) : 0
Number of inferior BPDUs received (all VLANs)     : 0
Number of RLQ request PDUs received (all VLANs)   : 0
Number of RLQ response PDUs received (all VLANs)  : 0
Number of RLQ request PDUs sent (all VLANs)       : 0
Number of RLQ response PDUs sent (all VLANs)      : 0
Router# 
This example shows how to display spanning tree information for this bridge only:
Router# show spanning-tree bridge
VLAN1
  Bridge ID  Priority    32768
             Address     0050.3e8d.6401
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
VLAN2
  Bridge ID  Priority    32768
             Address     0050.3e8d.6402
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
VLAN3
  Bridge ID  Priority    32768
             Address     0050.3e8d.6403
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec          
.
.
.
Router#
This example shows how to display detailed interface information:
Router# show spanning-tree detail
VLAN1 is executing the ieee compatible Spanning Tree protocol 
Bridge Identifier has priority 4096, address 00d0.00b8.1401 
Configured hello time 2, max age 20, forward delay 15 
We are the root of the spanning tree 
Topology change flag not set, detected flag not set 
Number of topology changes 9 last change occurred 02:41:34 ago 
from FastEthernet4/21 
Times: hold 1, topology change 35, notification 2 
hello 2, max age 20, forward delay 15 
Timers: hello 1, topology change 0, notification 0, aging 300 
Port 213 (FastEthernet4/21) of VLAN1 is forwarding 
Port path cost 19, Port priority 128, Port Identifier 128.213. 
Designated root has priority 4096, address 00d0.00b8.1401 
Designated bridge has priority 4096, address 00d0.00b8.1401 
Designated port id is 128.213, designated path cost 0 
Timers: message age 0, forward delay 0, hold 0 
Number of transitions to forwarding state: 1 
BPDU: sent 4845, received 1 
Port 214 (FastEthernet4/22) of VLAN1 is forwarding 
Port path cost 19, Port priority 128, Port Identifier 128.214. 
Designated root has priority 4096, address 00d0.00b8.1401 
Designated bridge has priority 4096, address 00d0.00b8.1401 
Designated port id is 128.214, designated path cost 0 
Timers: message age 0, forward delay 0, hold 0 
Number of transitions to forwarding state: 1 
BPDU: sent 127545, received 5 
Router# 
This example shows how to display spanning tree information for a specific interface:
Router# show spanning-tree interface fastethernet 5/9
Interface Fa0/10 (port 23) in Spanning tree 1 is ROOT-INCONSISTENT 
Port path cost 100, Port priority 128 
Designated root has priority 8192, address 0090.0c71.a400 
Designated bridge has priority 32768, address 00e0.1e9f.8940 
Designated port is 23, path cost 115 
.
.
.
This example shows how to display spanning tree information for a specific VLAN:
Router# show spanning-tree vlan 200
VLAN0200 
 Spanning tree enabled protocol ieee 
 Root ID Priority 32768 
    Address 00d0.00b8.14c8 
    This bridge is the root 
    Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
 Bridge ID Priority 32768 
    Address 00d0.00b8.14c8 
    Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec 
    Aging Time 300
Interface Role Sts Cost Prio.Nbr Status 
---------------- ---- --- --------- -------- -------------------------------- 
Fa4/4 Desg FWD 200000 128.196 P2p 
Fa4/5 Back BLK 200000 128.197 P2p
Router#
This example shows how to display spanning tree information for a specific bridge group:
Router# show spanning-tree 1
 UplinkFast is disabled
 BackboneFast is disabled
 
  Bridge group 1 is executing the ieee compatible Spanning Tree protocol
   Bridge Identifier has priority 32768, address 00d0.d39c.004d
   Configured hello time 2, max age 20, forward delay 15
   Current root has priority 32768, address 00d0.d39b.fddd
   Root port is 7 (FastEthernet2/2), cost of root path is 19
   Topology change flag set, detected flag not set
   Number of topology changes 3 last change occurred 00:00:01 ago
           from FastEthernet2/2
   Times:  hold 1, topology change 35, notification 2
           hello 2, max age 20, forward delay 15 
   Timers: hello 0, topology change 0, notification 0  bridge aging time 15
 
Port 2 (Ethernet0/1/0) of Bridge group 1 is down
                                        
    Port path cost 100, Port priority 128
    Designated root has priority 32768, address 0050.0bab.1808
    Designated bridge has priority 32768, address 0050.0bab.1808
    Designated port is 2, path cost 0
    Timers: message age 0, forward delay 0, hold 0
    BPDU: sent 0, received 0
 
  Port 7 (FastEthernet2/2) of Bridge group 1 is forwarding
    Port path cost 19, Port priority 128, Port Identifier 128.7.
    Designated root has priority 32768, address 00d0.d39b.fddd
    Designated bridge has priority 32768, address 00d0.d39b.fddd
    Designated port id is 128.7, designated path cost 0
    Timers: message age 2, forward delay 0, hold 0
    Number of transitions to forwarding state: 1
    BPDU: sent 3, received 49                                                          
Router#      
This example shows how to display a summary of port states:
Router# show spanning-tree summary 
Root bridge for: Bridge group 1, VLAN0001, VLAN0004-VLAN1005 
 VLAN1013-VLAN1499, VLAN2001-VLAN4094 
EtherChannel misconfiguration guard is enabled 
Extended system ID is enabled 
Portfast is enabled by default 
PortFast BPDU Guard is disabled by default 
Portfast BPDU Filter is disabled by default 
Loopguard is disabled by default 
UplinkFast is disabled 
BackboneFast is disabled 
Pathcost method used is long
Name                   Blocking Listening Learning Forwarding STP Active 
---------------------- -------- --------- -------- ---------- ---------- 
1 bridge               0        0         0        1          1 
3584 vlans 3584 0 0 7168 10752
                       Blocking Listening Learning Forwarding STP Active 
---------------------- -------- --------- -------- ---------- ---------- 
Total                  3584     0         0        7169       10753 
Router#      
This example shows how to display the total lines of the spanning tree state section:
Router#  show spanning-tree summary total 
Root bridge for:Bridge group 10, VLAN1, VLAN6, VLAN1000.
Extended system ID is enabled.
PortFast BPDU Guard is disabled
EtherChannel misconfiguration guard is enabled
UplinkFast is disabled
BackboneFast is disabled