Example: Configuring an IPv6 over IPv4 tunnel

As shown in Figure 90, configure an IPv6 over IPv4 tunnel between Switch A and Switch B so the two IPv6 networks can reach each other over the IPv4 network.

	IMPORTANT: By default, interfaces on the devices are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Make sure Switch A and Switch B have the corresponding VLAN interfaces created and can reach each other through IPv4.

• Configure Switch A:

  # Add Ten-GigabitEthernet 1/0/2 (the physical interface of the tunnel) to VLAN 100.

  <SwitchA> system-view
  [SwitchA] vlan 100
  [SwitchA-vlan100] port ten-gigabitethernet 1/0/2
  [SwitchA-vlan100] quit
  

  # Specify an IPv4 address for VLAN-interface 100.

  [SwitchA] interface vlan-interface 100
  [SwitchA-Vlan-interface100] ip address 192.168.100.1 255.255.255.0
  [SwitchA-Vlan-interface100] quit
  

  # Add Ten-GigabitEthernet 1/0/1 to VLAN 101.

  [SwitchA] vlan 101
  [SwitchA-vlan101] port ten-gigabitethernet 1/0/1
  [SwitchA-vlan101] quit
  

  # Specify an IPv6 address for VLAN-interface 101.

  [SwitchA] interface vlan-interface 101
  [SwitchA-Vlan-interface101] ipv6 address 3002::1 64
  [SwitchA-Vlan-interface101] quit
  

  # Create service loopback group 1, and specify its service type as tunnel.

  [SwitchA] service-loopback group 1 type tunnel
  

  # Add Ten-GigabitEthernet 1/0/3 to service loopback group 1.

  [SwitchA] interface ten-gigabitethernet 1/0/3
  [SwitchA-Ten-GigabitEthernet1/0/3] port service-loopback group 1
  [SwitchA-Ten-GigabitEthernet1/0/3] quit
  

  # Create IPv6 over IPv4 tunnel interface Tunnel 0.

  [SwitchA] interface tunnel 0 mode ipv6-ipv4
  

  # Specify an IPv6 address for the tunnel interface.

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

  # Specify VLAN-interface 100 as the source interface of the tunnel interface.

  [SwitchA-Tunnel0] source vlan-interface 100
  

  # Specify the destination address for the tunnel interface as the IP address of the VLAN-interface 100 on Switch B.

  [SwitchA-Tunnel0] destination 192.168.50.1
  [SwitchA-Tunnel0] quit
  

  # Configure a static route destined for IPv6 network 2 through tunnel 0.

  [SwitchA] ipv6 route-static 3003:: 64 tunnel 0
  

• Configure Switch B:

  # Add Ten-GigabitEthernet 1/0/2 (the physical interface of the tunnel) to VLAN 100.

  <SwitchB> system-view
  [SwitchB] vlan 100
  [SwitchB-vlan100] port ten-gigabitethernet 1/0/2
  [SwitchB-vlan100] quit
  

  # Specify an IPv4 address for VLAN-interface 100.

  [SwitchB] interface vlan-interface 100
  [SwitchB-Vlan-interface100] ip address 192.168.50.1 255.255.255.0
  [SwitchB-Vlan-interface100] quit
  

  # Add Ten-GigabitEthernet 1/0/1 to VLAN 101.

  [SwitchB] vlan 101
  [SwitchB-vlan101] port ten-gigabitethernet 1/0/1
  [SwitchB-vlan101] quit
  

  # Specify an IPv6 address for VLAN-interface 101.

  [SwitchB] interface vlan-interface 101
  [SwitchB-Vlan-interface101] ipv6 address 3003::1 64
  [SwitchB-Vlan-interface101] quit
  

  # Create service loopback group 1, and specify its service type as tunnel.

  [SwitchB] service-loopback group 1 type tunnel
  

  # Add Ten-GigabitEthernet 1/0/3 to service loopback group 1.

  [SwitchB] interface ten-gigabitethernet 1/0/3
  [SwitchB-Ten-GigabitEthernet1/0/3] port service-loopback group 1
  [SwitchB-Ten-GigabitEthernet1/0/3] quit
  

  # Create IPv6 over IPv4 tunnel interface Tunnel 0.

  [SwitchB] interface tunnel 0 mode ipv6-ipv4
  

  # Specify an IPv6 address for the tunnel interface.

  [SwitchB-Tunnel0] ipv6 address 3001::2/64
  

  # Specify VLAN-interface 100 as the source interface of the tunnel interface.

  [SwitchB-Tunnel0] source vlan-interface 100
  

  # Specify the destination address for the tunnel interface as the IP address of VLAN-interface 100 of Switch A.

  [SwitchB-Tunnel0] destination 192.168.100.1
  [SwitchB-Tunnel0] quit
  

  # Configure a static route destined for IPv6 network 1 through tunnel 0.

  [SwitchB] ipv6 route-static 3002:: 64 tunnel 0
  

# Use the display ipv6 interface command to display tunnel interface status on Switch A and Switch B. Verify that the interface tunnel 0 is up. (Details not shown.)

# Verify that Switch B and Switch A can ping the IPv6 address of VLAN-interface 101 of each other. This example uses Switch A.

[SwitchA] ping ipv6 3003::1
Ping6(56 data bytes) 3001::1 --> 3003::1, press CTRL_C to break
56 bytes from 3003::1, icmp_seq=0 hlim=64 time=45.000 ms
56 bytes from 3003::1, icmp_seq=1 hlim=64 time=10.000 ms
56 bytes from 3003::1, icmp_seq=2 hlim=64 time=4.000 ms
56 bytes from 3003::1, icmp_seq=3 hlim=64 time=10.000 ms
56 bytes from 3003::1, icmp_seq=4 hlim=64 time=11.000 ms

--- Ping6 statistics for 3003::1 ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 4.000/16.000/45.000/14.711 ms