Command Line Interface Guide

Spanning Tree Commands 765
Example
The following example configures the port priority of gigabit Ethernet
interface 1/0/5 to 144.
console(config)#interface gigabitethernet 1/0/5
console(config-if)#spanning-tree mst 1 port-priority
144
spanning-tree mst priority
Use the spanning-tree mst priority command in Global Configuration mode
to set the switch priority for the specified spanning-tree instance. To return to
the default setting, use the no form of this command.
Syntax
spanning-tree mst instance-id priority priority
no spanning-tree mst instance-id priority
Parameter Description
Default Configuration
The default bridge priority for IEEE STP is 32768.
Command Mode
Global Configuration mode
User Guidelines
The priority value must be a multiple of 4096. The priority will be set to the
nearest multiple of 4096 if not an exact multiple of 4096.
Parameter Description
instance-id ID of the spanning-tree instance. (Range: 1-4094)
priority Sets the switch priority for the specified spanning-tree instance.
This setting affects the likelihood that the switch is selected as
the root switch. A lower value increases the probability that the
switch is selected as the root switch. (Range: 0-61440)
2CSPC4.X8100-SWUM100.book Page 765 Wednesday, August 29, 2012 6:23 PM