Netgear XSM4324FS Software Administration Manual Software Version 12.x - Page 543

M4300 Series and M4300-96X Fully Managed Switches A screen similar to the following displays. b. In the Tunnel Id list, select 0. c. In the Mode list, select 6-in-4-configured. d. In the IPv6 Address/Prefix Length field, enter 2000::2/64. e. In the Source Address field, enter 192.168.1.2. f. In the Destination Address field, enter 192.168.1.1. g. Click Apply. Create a 6to4 Tunnel An IPv6 tunnel in 6to4 mode connects an isolated IPv6 domain (that is, an 6to4 island) over an IPv4 domain to remote IPv6 domains or to another 6to4 island. An IPv6 tunnel in 6to4 mode is also called an automatic 6to4 tunnel. Unlike a 6in4 tunnel, which is a point-to-point tunnel, a 6to4 tunnel is a point-to-multipoint tunnel. In a 6to4 tunnel, the IPv6 tunnel destination is determined by the IPv4 address, which is extracted from IPv6 destination address with the prefix 2002::V4ADDR::/48. A NETGEAR switch behaves as a 6to4 border router that connects 6to4 islands (in the following figure, Switch 1 and Switch 2) to an IPv6 domain (in the following figure, Switch 3). This means the following: The NETGEAR switch forwards traffic from an IPv6 domain (with a non-2002:: address) to a 6to4 island (with a 2002:: address) and the other way around. (In the following figure, this type of forwarding refers to the traffic between Switch 1 and Switch 3 and the traffic between Switch 2 and Switch 3). The NETGEAR switch forwards traffic from one 6to4 island to another 6to4 island (in the following figure, the traffic between Switch 1 and Switch 2). The NETGEAR switch does not forward traffic from one IPv6 domain (with a non-2002:: address) to other IPv6 domain (also with a non-2002:: address). Tunnels for IPv6 543 Software Administration Manual