Technical data

Converged Enhanced Ethernet Command Reference 209
53-1002508-01
show spanning-tree brief
2
show spanning-tree brief
Displays the status and parameters of the Spanning Tree Protocol.
Synopsis show spanning-tree brief
Operands None
Defaults None
Command
Modes
Privileged EXEC mode
EXEC mode
Description Use this command to display the status and parameters of the Spanning Tree Protocol. It includes
the port roles and port states. The following describes the port roles, states, and types:
• Port roles—root port, designated port, alternate port, and backup port
• Port states—discarding, learning, and forwarding
• Port types—edge port (PortFast), point-to-point, and shared port
Usage
Guidelines
None
Examples To display the status and parameters of the Spanning Tree Protocol:
switch#show spanning-tree brief
Spanning-tree Mode: Rapid Spanning Tree Protocol
Root ID Priority 32768
Address 0005.1e76.1aa0
Hello Time 2, Max Age 20, Forward Delay 15
Bridge ID Priority 32768
Address 0005.1e76.1aa0
Hello Time 2, Max Age 20, Forward Delay 15, Tx-HoldCount 6
Migrate Time 3 sec
Interface Role Sts Cost Prio Link-type Boundary Edge
-------------------------------------------------------------------------
Te 0/0 DIS DSC 2000 128 P2P Yes No
Te 0/1 ALT BLK 2000 128 P2P Yes No
Te 0/2 RTPT BLK 2000 128 P2P Yes No
Te 0/3 DIS BLK 2000 128 P2P Yes No
Te 0/8 DIS DSC 2000 128 P2P Yes No
Te 0/19 DIS DSC 2000 128 P2P Yes No
Te 0/20 DIS DSC 2000 128 P2P Yes No
See Also show spanning-tree interface