3Com Switch 8800 Advanced Software V5 Configuration Guide

382 CHAPTER 33: TUNNELING CONFIGURATION
■ When configuring a static route, you need to configure a route to the
destination address (the destination IPv6 address of the packet, instead of the
tunnel destination IPv4 address) and set the next-hop to the tunnel interface
number or network address at the local end of the tunnel. Such configurations
must be performed at both ends of the tunnel.
■ Before configuring dynamic routes, you must enable the dynamic routing
protocol on the tunnel interfaces at both ends. For configurations, refer to
“Static Routing and Dynamic Routing” on page 189.
■ The interfaces of an IPv6 manually configured tunnel support dynamic routing
protocols such as OSPFv3, RIPng, and BGP4+.
■ When configuring a dynamic routing protocol other than BGP4+ on tunnel
interfaces, you need to enable expedite termination on the tunnel interfaces.
■ The destination address of the route configured on the tunnel interface and
the address of the tunnel interface must not be in the same network segment.
■ Two or more tunnel interfaces using the same encapsulation protocol must
have different source and destination addresses.
Configuration Example Network requirements
Two IPv6 networks are connected through an IPv6 manually configured tunnel
between Switch A and Switch B. As shown in
Figure 116, the interface
VLAN-interface 12 on Switch A can communicate with the interface
VLAN-interface 12 on Switch B and an IPv4 packet route is available between.
Network diagram
Figure 116 Network diagram for an IPv6 manually configured tunnel (on switches)
Configuration procedure
The following example shows how to configure an IPv6 manually configured
tunnel between Switch A and Switch B. Before configuration, you must specify IP
addresses for the source and destination of the tunnel.
1 Configure Switch A
# Configure an IPv4 address for the interface VLAN-interface 12.
<SwitchA> system-view
[SwitchA] vlan 12
[SwitchA-vlan12] port GigabitEthernet 3/1/1
[SwitchA-vlan12] quit
[SwitchA] interface vlan-interface 12
[SwitchA-vlan-interface12] ip address 192.168.100.1 255.255.255.0
[SwitchA-vlan-interface12] quit
# Enable the IPv6 forwarding function.
IPv4 netwok
Switch A Switch B
Vlan-int12
192.168.100 .2/24
Vlan-int12
192.168.100 .1/24
Dual stack
Dual stack