A10E/A28E/A28F Configuration Guide
SwitchA(config)#spanning-tree mode mstp
SwitchA(config)#spanning-tree enable
SwitchA(config)#spanning-tree region-configuration
SwitchA(config-region)#name aaa
SwitchA(config-region)#revision-level 0
SwitchA(config-region)#instance 3 vlan 3
SwitchA(config-region)#instance 4 vlan 4
Configure Switch B.
SwitchB(config)#spanning-tree mode mstp
SwitchB(config)#spanning-tree enable
SwitchB(config)#spanning-tree region-configuration
SwitchB(config-region)#name aaa
SwitchB(config-region)#revision-level 0
SwitchB(config-region)#instance 3 vlan 3
SwitchB(config-region)#instance 4 vlan 4
SwitchB(config-region)#exit
Configure Switch C.
SwitchC(config)#spanning-tree mode mstp
SwitchC(config)#spanning-tree enable
SwitchC(config)#spanning-tree region-configuration
SwitchC(config-region)#name aaa
SwitchC(config-region)#revision-level 0
SwitchC(config-region)#instance 3 vlan 3
SwitchC(config-region)#instance 4 vlan 4
Step 4 Set the inner path coast of Port 2 of spanning tree instance 3 to 500000 on Switch B.
SwitchB(config)#interface port 1
SwitchB(config-port)#spanning-tree instance 3 inter-path-cost 500000
Checking result
Use the show spanning-tree region-operation command to show configurations of the MST
domain.
Alpha-A28E#show spanning-tree region-operation
Operational Information:
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Name: aaa
Revision level: 0