Planet Networking & Communication WGSW-50040 Configuration Manual page 110

Bridge Name
Bridge MAC
Address
Bridge Priority
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
By default, the MSTP establishes a tree topology (in blue lines) rooted with SwitchA. The ports marked with
"x" are in the discarding status, and the other ports are in the forwarding status.
Configurations Steps:
Step 1: Configure port to VLAN mapping:
 Create VLAN 20, 30, 40, 50 in Switch2, Switch3 and Switch4.
 Set ports 1-7 as trunk ports in Switch2 Switch3 and Switch4.
Step 2: Set Switch2, Switch3 and Switch4 in the same MSTP:
 Set Switch2, Switch3 and Switch4 to have the same region name as mstp.
 Map VLAN 20 and VLAN 30 in Switch2, Switch3 and Switch4 to Instance 3; Map VLAN 40 and VLAN
50 in Switch2, Switch3 and Switch4 to Instance 4.
Step 3: Set Switch3 as the root bridge of Instance 3; Set Switch4 as the root bridge of Instance 4
 Set the bridge priority of Instance 3 in Switch3 as 0.
 Set the bridge priority of Instance 4 in Switch4 as 0.
The detailed configuration is listed below:
Switch2:
Switch2(config)#vlan 20
Switch2(Config-Vlan20)#exit
Switch2(config)#vlan 30
Switch2(Config-Vlan30)#exit
Switch2(config)#vlan 40
Switch2(Config-Vlan40)#exit
Switch2(config)#vlan 50
Switch1 Switch2
...00-00-01 ...00-00-02
32768 32768
128 128
128 128
128
128
128
200000 200000
200000 200000
200000
200000
200000
Switch3
...00-00-03
32768
128
128
128
128
128
200000
200000
200000
200000
200000
12-7
Switch4
...00-00-04
32768
128
128
128
128
200000
200000
200000
200000