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show spanning-tree
This command shows the configuration for the common spanning tree
(CST) or for an instance within the multiple spanning tree (MST).
Syntax
show spanning-tree [interface | mst instance_id]
• interface
• ethernet unit/port
- unit - Stack unit. (Range: 1-8)
- port - Port number. (Range: 1-25/49)
• port-channel channel-id (Range: 1-32)
• instance_id - Instance identifier of the multiple spanning tree.
(Range: 0-4094, no leading zeroes)
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 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).
• For a description of the items displayed under “Spanning-tree
information,” see “Configuring Global Settings” on page 3-161. For a
description of the items displayed for specific interfaces, see “Displaying
Interface Settings” on page 3-166.