3Com 4210 9-Port Configuration Manual page 711

Network diagram
Figure 1-3 Network diagram for VLAN-VPN configuration
PC User
VLAN 100
VLAN 200
Terminal User
Configuration procedure
Configure Switch A.
# Enable the VLAN-VPN feature on Ethernet 1/0/11 of Switch A and tag the packets received on this
port with the tag of VLAN 1040 as the outer VLAN tag.
<SwitchA> system-view
[SwitchA] vlan 1040
[SwitchA-vlan1040] port Ethernet 1/0/11
[SwitchA-vlan1040] quit
[SwitchA] interface Ethernet 1/0/11
[SwitchA-Ethernet1/0/11] vlan-vpn enable
[SwitchA-Ethernet1/0/11] quit
# Configure Ethernet 1/0/12 as a trunk port permitting packets of VLAN 1024.
[SwitchA] interface Ethernet 1/0/12
[SwitchA-Ethernet1/0/12] port link-type trunk
[SwitchA-Ethernet1/0/12] port trunk permit vlan 1040
Configure Switch B.
# Enable the VLAN-VPN feature on Ethernet 1/0/21 of Switch B and tag the packets received on this
port with the tag of VLAN 1040 as the outer VLAN tag.
<SwitchB> system-view
[SwitchB] vlan 1040
[SwitchB-vlan1040] port Ethernet 1/0/21
[SwitchB-vlan1040] quit
[SwitchB] interface Ethernet 1/0/21
[SwitchB-Ethernet1/0/21] vlan-vpn enable
SwitchB
Eth1/0/21
Eth1/0/22
VLAN 1040
Eth1/0/12
Eth1/0/11
SwitchA
1-3
PC Server
VLAN 100
VLAN 200
Terminal Server