Command Line Reference Guide

Spanning Tree Protocol (STP) | 1037
Figure 42-4. show spanning-tree brief Command Example
Usage
Information
You must enable Spanning Tree group 0 prior to using this command.
spanning-tree
c e s
Configure Spanning Tree group id, cost, priority, and Portfast for an interface.
Syntax
spanning-tree stp-id [cost cost] [portfast [bpduguard]] [priority priority]
To disable Spanning Tree group on an interface, use the no spanning-tree stp-id [cost cost]
[portfast [bpduguard] [shutdown-on-violation]] [priority priority] command.
“Timers” Lists the values for the following bridge timers:
• hold time
• topology change
• hello time
• max age
• forward delay
“Times” List the number of seconds since the last:
• hello time
• topology change
• notification
• aging
“Port 1...” Displays the Interface type slot/port information and the
status of the interface (Disabled or Enabled).
“Port path...” Displays the path cost, priority, and identifier for the
interface.
“Designated root...” Displays the priority and MAC address of the root bridge of
the STG that the interface belongs.
“Designated port...” Displays the designated port ID
Table 42-1. show spanning-tree Command Example Information (continued)
Field Description
Force10#show span 0 brief
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768
Address 0001.e800.0a56
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768,
Address 0001.e800.0a56
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------- ------ ---- ---- --- ----- ----------------- ------
Gi 1/1 8.26 8 4 FWD 0 32768 0001.e800.0a56 8.26
Gi 1/2 8.27 8 4 FWD 0 32768 0001.e800.0a56 8.27
Gi 1/3 8.28 8 4 FWD 0 32768 0001.e800.0a56 8.28
Force10#