Cisco Systems 3560 사용자 설명서

The show spanning-tree mst interface interface-id privileged EXEC command displays information 
only for ports that are in a link-up operative state. Otherwise, you can use the show running-config 
privileged EXEC command to confirm the configuration.

To return the interface to its default setting, use the no spanning-tree mst instance-id cost interface 
configuration command.

You can configure the switch priority and make it more likely that the switch will be chosen as the root 
switch.

Exercise care when using this command. For most situations, we recommend that you use the 
spanning-tree mst instance-id root primary and the spanning-tree mst instance-id root secondary 
global configuration commands to modify the switch priority.

spanning-tree mst instance-id cost cost

Configure the cost.

If a loop occurs, the MSTP uses the path cost when selecting an 
interface to place into the forwarding state. A lower path cost 
represents higher-speed transmission.

For instance-id, you can specify a single instance, a range of 
instances separated by a hyphen, or a series of instances 
separated by a comma. The range is 0 to 4094.

For cost, the range is 1 to 200000000; the default value is 
derived from the media speed of the interface.

Return to privileged EXEC mode.

show spanning-tree mst interface interface-id

or

show spanning-tree mst instance-id

Verify your entries.

(Optional) Save your entries in the configuration file.