Command Line Interface Guide

Spanning Tree Commands 769
Default Configuration
The default port-priority for IEEE STP is 128. The default port-priority for a
LAG (port-channel) is 96.
Command Mode
Interface Configuration (gigabitethernet, port-channel, tengigabitethernet,
fortygigabitethernet) mode
User Guidelines
The priority value must be a multiple of 16.
Example
The following example configures the spanning priority on 1/0/5 to 96.
console(config)#interface gigabitethernet 1/0/5
console(config-if-1/0/5)#spanning-tree port-priority
96
spanning-tree priority
Use the spanning-tree priority command in Global Configuration mode to
configure the spanning-tree priority. The priority value is used to determine
which bridge is elected as the root bridge. To reset the default spanning-tree
priority use the no form of this command.
Syntax
spanning-tree priority priority
no spanning-tree priority
• priority — Priority of the bridge. (Range: 0–61440)
Default Configuration
The default bridge priority for IEEE STP is 32768.
Command Mode
Global Configuration mode
2CSPC4.X8100-SWUM100.book Page 769 Wednesday, August 29, 2012 6:23 PM