CLI Reference Guide-R04

Chapter 20 | Spanning Tree Commands
– 541 –
show spanning-tree This command shows the configuration for the common spanning tree (CST), for all
instances within the multiple spanning tree (MST), or for a specific instance within
the multiple spanning tree (MST).
Syntax
show spanning-tree [brief] | [ethernet unit/port] | [port-channel channel-id] |
| [mst [instance-id interface] | [configuration]]
brief - output all interface instances configuration in tabular form
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-28)
port-channel channel-id (Range: 1-26)
mst
instance-id - Instance identifier of the multiple spanning tree.
(Range: 0-4094, no leading zeroes)
configuration - displays the basic MST configuration
Default Setting
None
Command Mode
Privileged Exec
Command Usage
◆ Use the show spanning-tree command with no parameters to display the
spanning tree configuration for the switch for the Common Spanning Tree
(CST) and for every interface in the tree.
◆ Use the show spanning-tree brief command with no parameters to display
the spanning tree configuration in brief tabular form for the switch for the
Common Spanning Tree (CST) and for every interface in the tree.
◆ Use the show spanning-tree interface command to display the spanning tree
configuration for an interface within the Common Spanning Tree (CST).
◆ Use the show spanning-tree mst instance-id command to display the
spanning tree configuration for an instance within the Multiple Spanning Tree
(MST), including global settings and settings for all interfaces.
Example
Console#show spanning-tree
Spanning Tree Mode : MSTP