3Com S7906E Configuration Manual page 538

# Configure the destination address of interface Tunnel 0 to be the IP address of interface
VLAN-interface 101 on Switch B.
[SwitchA-Tunnel0] destination 2002::2:1
[SwitchA-Tunnel0] quit
# Create service loopback group 1, setting the service type to tunnel.
[SwitchA] service-loopback group 1 type tunnel
# Add interface GigabitEthernet 2/0/3 to service loopback group 1.
[SwitchA] interface GigabitEthernet 2/0/3
[SwitchA-GigabitEthernet2/0/3] undo stp enable
[SwitchA-GigabitEthernet2/0/3] port service-loopback group 1
# Apply service loopback group 1 to the tunnel in tunnel interface view.
[SwitchA-GigabitEthernet2/0/3] quit
[SwitchA] interface tunnel 0
[SwitchA-Tunnel0] service-loopback-group 1
[SwitchA-Tunnel0] quit
# Configure a static route from Switch A through interface Tunnel 0 to Group 2.
[SwitchA] ip route-static 10.1.3.0 255.255.255.0 tunnel 0
2) Configure Switch B
<SwitchB> system-view
# Enable IPv6.
[SwitchB] ipv6
# Configure interface VLAN-interface 100.
[SwitchB] interface vlan-interface 100
[SwitchB-Vlan-interface100] ip address 10.1.3.1 255.255.255.0
[SwitchB-Vlan-interface100] quit
# Configure interface 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 an interface named Tunnel 0.
[SwitchB] interface tunnel 0
# Configure an IPv4 address for interface Tunnel 0.
[SwitchB-Tunnel0] ip address 10.1.2.2 255.255.255.0
# Configure the tunnel encapsulation mode.
[SwitchB-Tunnel0] tunnel-protocol gre ipv6
# Configure the source address of interface Tunnel 0 to be the IP address of interface VLAN-interface
101.
[SwitchB-Tunnel0] source 2002::2:1
# Configure the destination address of interface Tunnel 0 to be the IP address of interface
VLAN-interface 101 on Switch A.
[SwitchB-Tunnel0] destination 2002::1:1
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