A10E/A28E/A28F Configuration Guide
Configure Port 1 and Port 2 of Switch C to allow all VLAN packets to pass in Trunk mode.
Configure Port 3 and Port 4 of Switch B and Switch C to allow packets of VLAN 3 and
VLAN 4 to pass in Access mode.
Configure Switch A.
SwitchA(config)#interface port 1
SwitchA(config-port)#switchport mode trunk
SwitchA(config-port)#exit
SwitchA(config)#interface port 2
SwitchA(config-port)#switchport mode trunk
SwitchA(config-port)#exit
Configure Switch B.
SwitchB(config)#interface port 1
SwitchB(config-port)#switchport mode trunk
SwitchB(config-port)#exit
SwitchB(config)#interface port 2
SwitchB(config-port)#switchport mode trunk
SwitchB(config-port)#exit
SwitchB(config)#interface port 3
SwitchB(config-port)#switchport access vlan 3
SwitchB(config-port)#exit
SwitchB(config)#interface port 4
SwitchB(config-port)#switchport access vlan 4
SwitchB(config-port)#exit
Configure Switch C.
SwitchC(config)#interface port 1
SwitchC(config-port)#switchport mode trunk
SwitchC(config-port)#exit
SwitchC(config)#interface port 2
SwitchC(config-port)#switchport mode trunk
SwitchC(config-port)#exit
SwitchC(config)#interface port 3
SwitchC(config-port)#switchport access vlan 3
SwitchC(config-port)#exit
SwitchC(config)#interface port 4
SwitchC(config-port)#switchport access vlan 4
SwitchC(config-port)#exit
Step 3 Set spanning tree mode of Switch A, Switch B, and Switch C to MSTP, and enable STP.
Enter MSTP configuration mode, and set the domain name to aaa, revised version to 0. Map
instance 3 to VLAN 3, and instance 4 to VLAN 4. Exist from MST configuration mode.
Configure Switch A.