Netgear XCM8810 Chassis User Manual - Page 658

NETGEAR 8800 User Manual Host 1 2002:c0a8:101::204:96ff:fe1f:a52a/48 IPv6 IPv4 2002:c0a8:101::2/48 2 Router 1 1 2002:c0a8:101::1/16 192.168.1.1/24 Router 2 2002:a00:1::1/16 10.0.0.1/24 1 2 2002:a00:1:1::1/64 3 2002:a00:1:2::1/64 IPv6 Host 2 2002:a00:1:1:204:96ff:fe1f:a432/64 Host 3 2002:a00:1:2:201:30ff:fe00:c200/64 EX_109 Figure 69. 6to4 Tunnel Configuration Example In Figure 69, Router 1 has an interface to an IPv4 region with the address 192.168.1.1 (for this example we are using private IPv4 addresses, but to tunnel across the Internet, you would use a public address). Router 2 has an IPv4 interface of 10.0.0.1. The IPv4 interface must be created before the tunnel is configured and cannot be deleted until the tunnel is deleted. The IPv6 endpoints of 6to4 tunnels must follow the standard 6to4 address requirement. The address must be of the form 2002:::/16, where is replaced by the IPv4 source address of the endpoint, in hexadecimal, colon separated form. For example, for a tunnel endpoint located at IPv4 address 10.20.30.40, the tunnel address would be 2002:0a14:1e28::/16. In hex, 10 is 0a, 20 is 14, 30 is 1e and 40 is 28. This example shows a simple setup on the Router 1 side (one big /48 IPv6 routing domain with no subnets), and a slightly more complex setup on the Router 2 side (two subnets :0001: and :0002: that are /64 in length). Hosts 1, 2, and 3 will communicate using their global 2002: addresses. The hosts in this example configure themselves using the EUI64 interface identifier derived from their MAC addresses. See your host OS vendor's documentation for configuring IPv6 addresses and routes. 658 | Chapter 21. IPv6 Unicast Routing