Chapter 18
| Spanning Tree Commands
– 456 –
stp-enabled-only
- Displays global settings, and settings for interfaces for
which STP is enabled.
Default Setting
None
Command Mode
Privileged Exec
Command Usage
â—†
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.
â—†
Use the
show spanning-tree
interface command to display the spanning tree
configuration for an interface within the Common Spanning Tree (CST).
â—†
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.
â—†
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 Information
---------------------------------------------------------------
Spanning Tree Mode : MSTP
Spanning Tree Enabled/Disabled : Enabled
Instance : 0
VLANs Configured : 1-4094
Priority : 32768
Bridge Hello Time (sec.) : 2
Bridge Max. Age (sec.) : 20
Bridge Forward Delay (sec.) : 15
Root Hello Time (sec.) : 2
Root Max. Age (sec.) : 20
Root Forward Delay (sec.) : 15
Max. Hops : 20
Remaining Hops : 20
Designated Root : 32768.0.0001ECF8D8C6
Current Root Port : 21
Current Root Cost : 100000
Number of Topology Changes : 5
Last Topology Change Time (sec.): 11409
Transmission Limit : 3
Path Cost Method : Long
Flooding Behavior : To VLAN
Cisco Prestandard : Disabled
---------------------------------------------------------------
Eth 1/ 1 Information
---------------------------------------------------------------
Admin Status : Enabled
Role : Disabled