D-Link DGS-6600-48TS Configuration Guide - Page 285
IPv6 Tunneling, Overview, An Introduction to IPv6 Tunneling, Operation concept
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Volume 4-Layer 3 Configurations / Chapter 29-IPv6 Tunneling Chapter Overview Chapter 29 IPv6 Tunneling Chapter Overview The following topics are included in this chapter, please go to the topic for more detailed information: • Chapter Overview • An Introduction to IPv6 Tunneling • Support RFC • IPv6 Manually Configured Tunnel • Automatic 6to4 Tunnel • ISATAP Tunnels • IPv6 Tunneling Configuration Commands • Configuration Examples • IPv6 tunneling manual Configuration Example • IPv6 tunneling 6to4 Configuration Example • IPv6 tunneling ISATAP Configuration Example An Introduction to IPv6 Tunneling Tunneling mechanisms can be used to deploy an IPv6 forwarding infrastructure while the overall IPv4 infrastructure is still the basis, because it either should not, or cannot be modified or upgraded. Tunneling is also called encapsulation. With encapsulation, IPv6 protocol is encapsulated in the header of IPv4 protocol and forwarded over the infrastructure of the IPv4 protocol. Tunnels can be configured in a host or a router, however, each tunnel endpoint must support dual stack. In this device IPv6 supports the following types of tunneling mechanisms: 1) Manual 2) 6to4 (base on RFC 3056, but not support relay function) 3) Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) Support RFC ¢RFCs: RFC 3056, Connection of IPv6 Domains via IPv4 Clouds RFC 4213, Basic Transition Mechanisms for IPv6 Hosts and Routers RFC 5214, Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) Operation concept IPv6 Manually Configured Tunnel A manually configured tunnel is a permanent link between two IPv6 networks over an IPv4 infrastructure. The major use is for stable connections that require regular communication between two dual stack endpoints. An IPv6 address is manually configured on a tunnel interface, and manually configured IPv4 addresses are assigned to the tunnel source and the tunnel destination. DGS-6600 Configuration Guide 285