Command Line Interface
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4
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 3-119. For a description of the
items displayed for specific interfaces, see “Displaying Interface Settings” on
page 3-123.
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