Show Spanning-Tree - Cisco 4500M Command Reference Manual

show spanning-tree

show spanning-tree
To display spanning tree state information, use the show spanning-tree command.
Syntax Description
bridge_group
active
backbonefast
bridge
id
inconsistentports
interface type
root
summary
total
uplinkfast
vlan vlan_id
pathcost method
detail
Defaults
Interface information summary is displayed.
Command Modes
Privileged EXEC
Command History Release
12.1(8a)EW
12.1(12c)EW
Examples
This example shows how to display spanning tree information on active interfaces only:
Switch# 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
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
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show spanning-tree [bridge_group | active | backbonefast | bridge [id] | inconsistentports |
interface type | root | summary [total] | uplinkfast | vlan vlan_id | pathcost method |detail]
(Optional) Specifies the bridge group number; valid values are from 1 to 255.
(Optional) Displays spanning tree information on active interfaces only.
(Optional) Displays spanning tree BackboneFast status.
(Optional) Displays bridge status and configuration information.
(Optional) Name of the bridge.
(Optional) Displays root inconsistency state.
(Optional) Specifies the interface type and number; valid values are
FastEthernet, GigabitEthernet, port-channel (1 to 64), and vlan (1 to 4094).
(Optional) Displays root bridge status and configuration.
(Optional) Specifies a summary of port states.
(Optional) Displays the total lines of the spanning tree state section.
(Optional) Displays spanning tree UplinkFast status.
(Optional) Specifies the VLAN ID; valid values are from 1 to 4094.
(Optional) Displays the default path cost calculation method used.
(Optional) Displays a summary of interface information.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Support for extended addressing was added.
Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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