Chapter 17
| Spanning Tree Commands
– 437 –
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
[
interface
|
mst
instance-id
|
brief
|
stp-enabled-only
]
interface
ethernet
unit
/
port
unit
- Unit identifier. (Range: 1)
port
- Port number. (Range: 1-52)
port-channel
channel-id
(Range: 1-24)
instance-id
- Instance identifier of the multiple spanning tree.
(Range: 0-4094)
brief
- Shows a summary of global and interface settings.
stp-enabled-only
- Displays global settings, and settings for
interfaces for which STP is enabled.
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
command to display the spanning tree
configuration for all instances within the Multiple Spanning Tree (MST),
including global settings and settings for active interfaces.
◆
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.
