Planet XGS3-42000R User Manual page 161

Switch3:
Switch3(config)#vlan 20
Switch3(Config-Vlan20)#exit
Switch3(config)#vlan 30
Switch3(Config-Vlan30)#exit
Switch3(config)#vlan 40
Switch3(Config-Vlan40)#exit
Switch3(config)#vlan 50
Switch3(Config-Vlan50)#exit
Switch3(config)#spanning-tree mst configuration
Switch3(Config-Mstp-Region)#name mstp
Switch3(Config-Mstp-Region)#instance 3 vlan 20;30
Switch3(Config-Mstp-Region)#instance 4 vlan 40;50
Switch3(Config-Mstp-Region)#exit
Switch3(config)#interface e1/1-7
Switch3(Config-Port-Range)#s witchport mode trunk
Switch3(Config-Port-Range)#exit
Switch3(config)#spanning-tree
Switch3(config)#spanning-tree mst 3 priority 0
Switch4:
Switch4(config)#vlan 20
Switch4(Config-Vlan20)#exit
Switch4(config)#vlan 30
Switch4(Config-Vlan30)#exit
Switch4(config)#vlan 40
Switch4(Config-Vlan40)#exit
Switch4(config)#vlan 50
Switch4(Config-Vlan50)#exit
Switch4(config)#spanning-tree mst configuration
Switch4(Config-Mstp-Region)#name mstp
Switch4(Config-Mstp-Region)#instance 3 vlan 20;30
Switch4(Config-Mstp-Region)#instance 4 vlan 40;50
Switch4(Config-Mstp-Region)#exit
Switch4(config)#interface e1/1-7
Switch4(Config-Port-Range)#s witchport mode trunk
Switch4(Config-Port-Range)#exit
Switch4(config)#spanning-tree
Switch4(config)#spanning-tree mst 4 priority 0
After the above configuration, Switch1 is the root bridge of the instance 0 of t he entire net work. In the MS TP
region which Switch2, Switch3 and Switch4 belong to, Switch2 is the region root of the instance 0, Switch3 is
the region root of t he instance 3 and Switch4 is the region root of the instance 4. The traffic of VLAN 20 and
VLAN 30 is sent through the topology of t he instance 3. The traffic of VLAN 40 and VLA N 50 is sent through
the topology of the instance 4. And the traffic of other VLANs is sent through the topology of the instance 0.
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