TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 CLI Reference Guide - Page 229

T2500-28TC JetStream L2 Managed Switch CLI Guide spanning-tree mst Description The spanning-tree mst command is used to configure MST Instance Port. To return to the default configuration of the corresponding Instance Port, please use no spanning-tree mst command. A port can play different roles in different spanning tree instance. You can use this command to configure the parameters of the ports in different instance IDs as well as view status of the ports in the specified instance Syntax spanning-tree mst instance instance-id { [port-priority pri] [cost cost] } no spanning-tree mst instance instance-id Parameter instance-id -- Instance ID, ranging from 1 to 8. pri -- Port Priority, which must be multiple of 16 ranging from 0 to 240. By default, it is 128. Port Priority is an important criterion on determining if the port will be chosen as the root port by the device connected to this port. cost -- Path Cost, ranging from 0 to 200000. The lower value has the higher priority. Its default value is 0 meaning "auto". Command Mode Interface Configuration Mode (interface fastEthernet / interface range fastEthernet / interface gigabitEthernet / interface range gigabitEthernet) Example Configure the priority of Fast Ethernet port 1 in MST Instance 1 as 64, and path cost as 2000: T2500-28TC(config)#interface fastEthernet 1/0/1 T2500-28TC(config-if)#spanning-tree mst instance 1 port-priority 64 cost 2000 spanning-tree priority Description The spanning-tree priority command is used to configure the bridge priority. To return to the default value of bridge priority, please use no spanning-tree priority command. 212