PLANET WGSW-52040 - Manual (Page 343)

19-112
Usage Guide:
By setting the port priority, users can control the port ID of the instance in order to control the root port and
designated port of the instance. The lower the value of the port priority is, the higher the priority is.
Example:
Set the port priority as 32 on the port 1/2 for the instance 1.
Switch(config)#interface ethernet 1/2
Switch(Config-If-Ethernet1/2)#spanning-tree mst 1 port-priority 32
19.1.25 spanning-tree mst priority
Command:
spanning-tree mst <instance-id> priority <bridge-priority>
no spanning-tree mst <instance-id> priority
Function:
Set the bridge priority for the specified instance; the command “no spanning-tree mst <instance-id> priority”
restores the default setting.
Parameter:
<instance-id> sets instance ID. The valid range is from 0 to 64; <bridge-priority> sets the switch priority. The valid
range is from 0 to 61440. The value should be the multiples of 4096, such as 0, 4096, 8192…61440.
Command mode:
Global Mode
Default:
The default bridge priority is 32768.
Usage Guide:
By setting the bridge priority, users can change the bridge ID for the specified instance. And the bridge ID can
influence the elections of root bridge and designated port for the specified instance.
Example:
Set the priority for Instance 2 to 4096.
Switch(config)#spanning-tree mst 2 priority 4096