Spanning Tree Protocol (STP) | 621
34
Spanning Tree Protocol (STP)
Overview
The commands described in this chapter configure and monitor the IEEE 802.1d spanning tree protocol 
(STP). The STP commands are:
• bridge-priority
• debug spanning-tree
• description
• disable
• forward-delay
• hello-time
• max-age
• portfast bpdufilter default
• protocol spanning-tree
• show config
• show spanning-tree 0
• spanning-tree 0
bridge-priority 
Set the bridge priority of the switch in an IEEE 802.1D Spanning Tree.
Syntax
bridge-priority {priority-value | primary | secondary}
To return to the default value, use the no bridge-priority command.
Parameters
 
Defaults
priority-value = 32768
Command Modes
SPANNING TREE (The prompt is “conf-stp”.)
priority-value
Enter a number as the bridge priority value. 
Range: 0 to 65535. 
Default: 32768.
primary Enter the keyword primary to designate the bridge as the root bridge.
secondary Enter the keyword secondary to designate the bridge as a secondary root 
bridge.