A10E/A28E/A28F Configuration Guide
Configure Switch B.
Alpha-A28E#hostname SwitchB
SwitchB#config
SwitchB(config)#mls double-tagging tpid 9100
SwitchB(config)#create vlan 100,200,1000 active
Step 2 Set Port 2 and Port 3 to dot1q mode.
Configure Switch A.
SwitchA(config)#interface port 2
SwitchA(config-port)#switchport mode trunk
SwitchA(config-port)#switchport trunk native vlan 1000
SwitchA(config-port)#switchport qinq dot1q-tunnel
SwitchA(config-port)#exit
SwitchA(config)#interface port 3
SwitchA(config-port)#switchport mode trunk
SwitchA(config-port)#switchport trunk native vlan 1000
SwitchA(config-port)#switchport qinq dot1q-tunnel
SwitchA(config-port)#exit
Configure Switch B.
SwitchB(config)#interface port 2
SwitchB(config-port)#switchport mode trunk
SwitchB(config-port)#switchport trunk native vlan 1000
SwitchB(config-port)#switchport qinq dot1q-tunnel
SwitchB(config-port)#exit
SwitchB(config)#interface port 3
SwitchB(config-port)#switchport mode trunk
SwitchB(config-port)#switchport trunk native vlan 1000
SwitchB(config-port)#switchport qinq dot1q-tunnel
SwitchB(config-port)#exit
Step 3 Set Port 1 to allow double Tag packets to pass.
Configure Switch A.
SwitchA(config)#interface port 1
SwitchA(config-port)#switchport mode trunk
SwitchA(config-port)#switchport trunk allowed vlan 1000 confirm
Configure Switch B.