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 - This is device 1.
-port - Port number.
port-channel channel-id (Range: 1-6)
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-treeinterface 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 3-96. For a description of the items
displayed for specific interfaces, see “Displaying Interface Settings” on
page 3-100.