TP-Link T1500 Series - Page 356

Configuration Guide 334
Configuring Spanning Tree MSTP Configurations
Switch(config)#spanning-tree mst configuration
Switch(config-mst)#name R1
Switch(config-mst)#revision 100
Switch(config-mst)#instance 5 vlan 2-6
Switch(config-mst)#show spanning-tree mst configuration
Region-Name : R1
Revision : 100
MST-Instance Vlans-Mapped
---------------- ------------------------------------------------------------
0 1,7-4094
5 2-6,
----------------------------------------------------------------------------
Switch(config-mst)#end
Switch#copy running-config startup-config

Configuring the Parameters on Ports in Instance
Follow these steps to configure the priority and path cost of ports in the specified instance:
Step 1 configure
Enter global configuration mode.
Step 2 interface {fastEthernet
port
| range fastEthernet
port-list
| gigabitEthernet
port
| range
gigabitEthernet
port-list
| ten-gigabitEthernet
port
| range ten-gigabitEthernet
port-list
| port-
channel
port-channel-id
| range port-channel
port-channel-list
}
Enter interface configuration mode.
Step 3 spanning-tree mst instance
instance-id
{[ port-priority
pri
] | [ cost
cost
]}
Configure the priority and path cost of ports in the specified instance.
instance-id:
Specify the instance ID, the valid values ranges from 1 to 8.
pri:
Specify the Priority for the port in the corresponding instance. The value should be an
integral multiple of 16, ranging from 0 to 240. The default valueis 128. The port with lower value
has the higher priority. When the root path of the port is the same as other ports’, the switch
will compare the port priorities between these ports and select a root port with the highest
priority.
cost:
Enter the value of the path cost in the corresponding instance. The valid values are from
0 to 2000000. The default setting is Auto, which means the port calculates the external path
cost automatically according to the port’s link speed. The port with the lowest root path cost
will be elected as the root port of the switch.