3Com S7906E Configuration Manual page 525

# Configure an IPv6 address for VLAN-interface 101 (the physical interface of the tunnel).
[SwitchB] interface vlan-interface 101
[SwitchB-Vlan-interface101] ipv6 address 2002::2:1 64
[SwitchB-Vlan-interface101] quit
# Create the interface tunnel 2.
[SwitchB] interface tunnel 2
# Configure an IPv4 address for the interface tunnel 2.
[SwitchB-Tunnel2] ip address 30.1.2.2 255.255.255.0
# Configure the tunnel encapsulation mode.
[SwitchB-Tunnel2] tunnel-protocol ipv4-ipv6
# Configure the source address for the interface tunnel 2 (IP address of VLAN-interface 101).
[SwitchB-Tunnel2] source 2002::2:1
# Configure the destination address for the interface tunnel 2 (IP address of VLAN-interface 101 of
Switch A).
[SwitchB-Tunnel2] destination 2002::1:1
[SwitchB-Tunnel2] quit
# Create service loopback group 1 to support the tunnel service.
[SwitchB] service-loopback group 1 type tunnel
# Add GigabitEthernet 2/0/3 to service loopback group 1.
[SwitchB] interface GigabitEthernet 2/0/3
[SwitchB-GigabitEthernet2/0/3] undo stp enable
[SwitchB-GigabitEthernet2/0/3] port service-loopback group 1
[SwitchB-GigabitEthernet2/0/3] quit
# Reference service loopback group 1 on the tunnel.
[SwitchB] interface tunnel 2
[SwitchB-Tunnel2] service-loopback-group 1
[SwitchB-Tunnel2] quit
# Configure a static route from Switch B through the interface tunnel 2 to Group 1.
[SwitchB] ip route-static 30.1.1.0 255.255.255.0 tunnel 2
Configuration verification
After the configuration, display the status of the tunnel interfaces on Switch A and Switch B,
respectively.
<SwitchA> display interface tunnel 1
Tunnel1 current state: UP
Line protocol current state: UP
Description: Tunnel1 Interface
The Maximum Transmit Unit is 1460
Internet Address is 30.1.2.1/24 Primary
Encapsulation is TUNNEL, service-loopback-group ID is 1.
Tunnel source 2002::1:1, destination 2002::2:1
Tunnel protocol/transport IP/IPv6
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