Configuring switch B for manual 6in4 tunneling
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Configure the Tunnel endpoint for Switch B
The tunnel endpoint for Switch B is configured with:
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Mode-6in4
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Source-encapsulation information for the IPv4 header indicating the source IPv4 address
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Destination-encapsulation information for the IPv4 header indicating the destination IPv4 address
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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:
5000::1/64 is the IPv6 network assigned to the interface. Enables IPv6 on the interface.Switch(config)# interface tunnel 1 Switch(tunnel-1)# tunnel mode 6in4 Switch(tunnel-1)# tunnel source 20.0.0.1 Switch(tunnel-1)# tunnel destination 30.0.0.1 Switch(tunnel-1)# ipv6 address 5000::1/64
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Mode-6in4
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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
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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
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Configure the VLAN Used to Reach the First Hop Router in the IPv4 Network
This step configures the tunnel endpoint IPv4 address 20.0.0.1/24 (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 20.0.0.1/24
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Configure the IPv4 Default Gateway
The IPv4 default gateway 20.0.0.2 is configured.
Switch(config)# ip default-gateway 20.0.0.2