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• Configure Router B:
# Specify an IPv4 address for GigabitEthernet 2/0/2.
<RouterB> system-view
[RouterB] interface gigabitethernet 2/0/2
[RouterB-GigabitEthernet2/0/2] ip address 5.1.1.1 24
[RouterB-GigabitEthernet2/0/2] quit
# Specify a 6to4 address for GigabitEthernet 2/0/1.
[RouterB] interface gigabitethernet 2/0/1
[RouterB-GigabitEthernet2/0/1] ipv6 address 2002:0501:0101:1::1/64
[RouterB-GigabitEthernet2/0/1] quit
# Create the 6to4 tunnel interface Tunnel 0.
[RouterB] interface tunnel 0 mode ipv6-ipv4 6to4
# Specify an IPv6 address for the tunnel interface.
[RouterB-Tunnel0] ipv6 address 3002::1/64
# Specify the source interface as GigabitEthernet 2/0/2 for the tunnel interface.
[RouterB-Tunnel0] source gigabitethernet 2/0/2
[RouterB-Tunnel0] quit
# Configure a static route destined for 2002::/16 through the tunnel interface.
[RouterB] ipv6 route-static 2002:: 16 tunnel 0
Verifying the configuration
# Verify that Linux-running hosts Host A and Host B can ping each other.
D:\>ping6 -s 2002:201:101:1::2 2002:501:101:1::2
Pinging 2002:501:101:1::2
from 2002:201:101:1::2 with 32 bytes of data:
Reply from 2002:501:101:1::2: bytes=32 time=13ms
Reply from 2002:501:101:1::2: bytes=32 time=1ms
Reply from 2002:501:101:1::2: bytes=32 time=1ms
Reply from 2002:501:101:1::2: bytes=32 time<1ms
Ping statistics for 2002:501:101:1::2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 13ms, Average = 3ms
6to4 relay configuration example
Network requirements
As shown in Figure 127, Router A is a 6to4 router, and 6to4 addresses are used on the connected
IPv6 network. Router B acts as a 6to4 relay router and is connected to an IPv6 network (2001::/16).
Configure a 6to4 tunnel between Router A and Router B to make Host A and Host B reachable to
each other.
The configuration on a 6to4 relay router is similar to that on a 6to4 router. However, to enable
communication between the 6to4 network and the IPv6 network, you must configure a route to the
IPv6 network on the 6to4 router. The IPv4 address of GigabitEthernet 2/0/2 on the relay router is
6.1.1.1/24 and its corresponding 6to4 prefix is 2002:0601:0101::/48. The next hop of the static route
must be an address using this prefix.
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