CLI Reference Guide

736 Spanning Tree Commands
Syntax
show spanning-tree [{gigabitethernet unit/slot/port | port-channel port-
channel-number
| tengigabitethernet unit/slot/port | fortygigabitethernet
unit/slot/port}]
[instance instance-id ]
show spanning-tree [detail] [active | blockedports] | [instance
instance-id ]
show spanning-tree mst-configuration
show spanning-tree {uplinkfast | backbonefast}
• detail —Displays detailed information.
•
active —Displays active ports only.
•
blockedports —Displays blocked ports only.
•
mst-configuration —Displays the MST configuration identifier.
•
instance -id —ID of the spanning tree instance.
•
uplinkfast —Displays Direct Rapid Convergence information.
•
backbonefast —Displays Indirect Rapid Convergence information.
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode, Configuration mode and all Configuration submodes
User Guidelines
This command has no user guidelines.
Examples
The following examples display spanning-tree information.
console#show spanning-tree
Spanning tree :Enabled - BPDU Flooding :Disabled - Portfast BPDU filtering
:Disabled - mode :rstp
CST Regional Root: 80:00:00:1E:C9:AA:AD:1B
Regional Root Path Cost: 0
ROOT ID
Priority 32768
Address 0010.1882.1C53
Path Cost 20000
2CSNXXX_SWUM200.book Page 736 Tuesday, December 10, 2013 1:22 PM