Configuring switch B for manual 6in4 tunneling

  1. Configure the Tunnel endpoint for Switch B

    The tunnel endpoint for Switch B is configured with:

    1. Mode-6in4
    2. Source-encapsulation information for the IPv4 header indicating the source IPv4 address
    3. Destination-encapsulation information for the IPv4 header indicating the destination IPv4 address
    4. IPv6 Address-IPv6 network assigned to the interface (much like VLAN assignments). Enables IPv6 on the interface. It is required in order to route over the interface. To configure a tunnel endpoint:
      Switch(config)# interface tunnel 1
      Switch(tunnel-1)# tunnel mode 6in4
      Switch(tunnel-1)# tunnel source
      Switch(tunnel-1)# tunnel destination
      Switch(tunnel-1)# ipv6 address 5000::1/64
      5000::1/64 is the IPv6 network assigned to the interface. Enables IPv6 on the interface.
  2. Configure VLAN 2 for the IPv6 Hosts on the 3000::/64 Network

    This step configures IPv6 address 3000::1/64 on VLAN 2. When IPv6 traffic from IPv6 host 3000::2/64 that is destined for the IPv6 4000::/64 network is transported over VLAN 2, it will be routed into the tunnel.

    The command is executed in VLAN context.

    Switch(config)# vlan 2
    Switch(vlan-2)# ipv6 address 3000::1/64
  3. Configure IPv6 Routing to Route into the Tunnel

    IPv6 unicast routing is enabled. The static route is configured to route packets destined for the 4000::/64 network into the tunnel.

    Switch(config)# ipv6 unicast routing
    Switch(config)# ipv6 route 4000::/64 1 5000::2 2

    1 Configures static route for destinations in the 4000::/64 network

    2 IPv6 address of tunnel endpoint

  4. Configure the VLAN Used to Reach the First Hop Router in the IPv4 Network

    This step configures the tunnel endpoint IPv4 address (VLAN 1) in VLAN 2 context so that traffic from VLAN 2 can reach the first hop router in the IPv4 network through the tunnel.

    The command is performed in VLAN context.

    Switch(vlan-2)# ip address
  5. Configure the IPv4 Default Gateway

    The IPv4 default gateway is configured.

    Switch(config)# ip default-gateway