Reference Guide

314 Spanning-Tree Commands
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spanning-tree mst port-priority
The spanning-tree mst port-priority Interface Configuration mode command configures port
priority for the specified MST instance. To return to the default configuration, use the no form
of this command.
Syntax
spanning-tree mst instance-id port-priority priority
no spanning-tree mst instance-id port-priority
• instance-ID— ID of the spanning tree instance. (Range: 1-15)
•
priority— The port priority. (Range: 0 - 240 in multiples of 16)
Default Configuration
The default port priority for IEEE Multiple Spanning Tree Protocol (MSTP) is 128.
Command Modes
Interface Configuration (Ethernet, port-channel) mode
User Guidelines
There are no user guidelines for this command.
Example
The following example configures the port priority of port 1/e1 for instance 1 to 142.
spanning-tree mst cost
The spanning-tree mst cost Interface Configuration mode command configures the path cost
for multiple spanning tree (MST) calculations. If a loop occurs, the spanning tree considers path
cost when selecting an interface to put in the forwarding state. To return to the default
configuration, use the no form of this command.
Syntax
spanning-tree mst instance-id cost cost
no spanning-tree mst instance-id cost
• instance-ID— ID of the spanning -tree instance (Range: 1-15).
•
cost— The port path cost. (Range: 1 - 200,000,000)
Console(config)# interface ethernet 1/e1
Console(config-if)# spanning-tree mst 1 port-priority 142