24-Port Layer 3 Switch Management Guide

S PANNING T REE C OMMANDS
4-155
spanning-tree port-priority
Use this command to configure the priority for the specified interface. Use
the no form to restore the default.
Syntax
spanning-tree port-priority priority
no spanning-tree port-priority
priority - The priority for a port. (Range: 0-240, in steps of 16)
Default Setting
128
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• This command defines the priority for the use of a port in the Spanning
Tree Algorithm. If the path cost for all ports on a switch are the same,
the port with the highest priority (that is, lowest value) will be
configured as an active link in the spanning tree.
• Where more than one port is assigned the highest priority, the port
with lowest numeric identifier will be enabled.
Example
Related Commands
spanning-tree cost (4-154)
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree port-priority 0
Console(config-if)#