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Port 4
Port 5
Port 6
Port 7
By default, MSTP will establish a topology (in blue lines) rooted with SW1, the ports marked
with "x" are in the Discarding status, the other ports are in the Forwarding status.
Configurations adjustment:
Step 1: Configure port-VLAN mapping.
Create VLAN 20, 30, 40, 50 in Switch SW2, SW3, and SW4.
Set the port 1-7 to Trunk mode in Switch SW2, SW3, and SW4.
Step 2: Configure Switch SW2, SW3, SW4 to be in the same MSTP field.
Configure the filed name for SW2, SW3, SW4 to "mstp";
Map vlan 20 and vlan 30 on SW2, SW3 and SW4 to Instance3; map vlan 40 and vlan 50 to
Instance4.
Step 3: Configure switch SW3 to be the root bridge of Instance3; Configure switch SW4 to be root
bridge of Instance4.
Set in Switch SW3 the corresponding bridge priority of Instance3 to 0;
Set in Switch SW4 the corresponding bridge priority of Instance4 to 0.
The configuration steps are listed below:
Switch SW2:
SW2(Config)#vlan 20
SW2(Config-Vlan20)#exit
SW2(Config)#vlan 30
SW2(Config-Vlan30)#exit
SW2(Config)#vlan 40
SW2(Config-Vlan40)#exit
SW2(Config)#vlan 50
SW2(Config-Vlan50)#exit
SW2(Config)#spanning-tree mst configuration
SW2(Config-Mstp-Region)#name mstp
SW2(Config-Mstp-Region)#instance 3 vlan 20;30
SW2(Config-Mstp-Region)#instance 4 vlan 40;50
SW2(Config-Mstp-Region)#exit
SW2(Config)#interface e1/1-7
SW2(Config-Port-Range)#switchport mode trunk
SW2(Config-Port-Range)#exit
EES4710BD 10 Slots L2/L3/L4 Chassis Switch
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Table of Contents
Troubleshooting
