Cisco 300 Series

Spanning-Tree Commands
905 OL-32830-01 Command Line Interface Reference Guide
46
46.20 spanning-tree mst port-priority
Use the spanning-tree mst port-priority Interface (Ethernet, Port Channel)
Configuration mode command to configure the priority of a port. Use the no form
of this command to restore the default configuration.
Syntax
spanning-tree mst
instance-id port-priority priority
no spanning-tree mst instance-id port-priority
Parameters
• instance-id—Specifies the spanning tree instance ID. (Range: 1–15)
• priority—Specifies the port priority. (Range: 0–240 in multiples of 16)
Default Configuration
The default port priority is 128.
Command Mode
Interface (Ethernet, Port Channel) Configuration mode
User Guidelines
The priority value must be a multiple of 16.
Example
The following example configures the port priority of
gi1 1 to 144.
switchxxxxxx(config)# interface gi1 1
switchxxxxxx(config-if)# spanning-tree mst 1 port-priority 144
46.21 spanning-tree mst cost
Use the spanning-tree mst cost Interface (Ethernet, Port Channel) Configuration
mode command to configure the path cost for MST calculations. If a loop occurs,
the spanning tree considers path cost when selecting an interface to put in the