6to4 tunnel configuration example

As shown in Figure 126, configure a 6to4 tunnel between 6to4 routers Router A and Router B so the two hosts can reach each other over the IPv4 network.

To enable communication between 6to4 networks, configure 6to4 addresses for 6to4 routers and hosts in the 6to4 networks.

• The IPv4 address of GigabitEthernet 1/0/2 on Router A is 2.1.1.1/24, and the corresponding 6to4 prefix is 2002:0201:0101::/48. Host A must use this prefix.

• The IPv4 address of GigabitEthernet 1/0/2 on Router B is 5.1.1.1/24, and the corresponding 6to4 prefix is 2002:0501:0101::/48. Host B must use this prefix.

Make sure Router A and Router B can reach each other through IPv4.

• Configure Router A:

  # Specify an IPv4 address for GigabitEthernet 1/0/2.

  <RouterA> system-view
  [RouterA] interface gigabitethernet 1/0/2
  [RouterA-GigabitEthernet1/0/2] ip address 2.1.1.1 24
  [RouterA-GigabitEthernet1/0/2] quit
  

  # Specify a 6to4 address for GigabitEthernet 1/0/1.

  [RouterA] interface gigabitethernet 1/0/1
  [RouterA-GigabitEthernet1/0/1] ipv6 address 2002:0201:0101:1::1/64
  [RouterA-GigabitEthernet1/0/1] quit
  

  # Create the 6to4 tunnel interface Tunnel 0.

  [RouterB] interface tunnel 0 mode ipv6-ipv4 6to4
  

  # Specify an IPv6 address for the tunnel interface.

  [RouterA-Tunnel0] ipv6 address 3001::1/64
  

  # Specify the source interface as GigabitEthernet 1/0/2 for the tunnel interface.

  [RouterA-Tunnel0] source gigabitethernet 1/0/2
  [RouterA-Tunnel0] quit
  

  # Configure a static route destined for 2002::/16 through the tunnel interface.

  [RouterA] ipv6 route-static 2002:: 16 tunnel 0
  

• Configure Router B:

  # Specify an IPv4 address for GigabitEthernet 1/0/2.

  <RouterB> system-view
  [RouterB] interface gigabitethernet 1/0/2
  [RouterB-GigabitEthernet1/0/2] ip address 5.1.1.1 24
  [RouterB-GigabitEthernet1/0/2] quit
  

  # Specify a 6to4 address for GigabitEthernet 1/0/1.

  [RouterB] interface gigabitethernet 1/0/1
  [RouterB-GigabitEthernet1/0/1] ipv6 address 2002:0501:0101:1::1/64
  [RouterB-GigabitEthernet1/0/1] 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 1/0/2 for the tunnel interface.

  [RouterB-Tunnel0] source gigabitethernet 1/0/2
  [RouterB-Tunnel0] quit
  

  # Configure a static route destined for 2002::/16 through the tunnel interface.

  [RouterB] ipv6 route-static 2002:: 16 tunnel 0
  

# 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