Ipv6 Tunnel Configuration; Ipv6 Tunnel Overview - Zte ZXR10 5900E Series User Manual

IPv6 Tunnel
Overview
IPv6 Manually
Configured Tunnel
Automatic 6to4
Tunnel
3
C h a p t e r
IPv6 Tunnel
Configuration
Table of Contents
IPv6 Tunnel Overview.........................................................15
Configuring IPv6 Tunnel .....................................................17
Example of IPv6 Manually Configured Tunnel .........................18
IPv6 Tunnel Maintenance and Diagnosis................................19

IPv6 Tunnel Overview

It is impossible for IPv6 to supersede IPv4 immediately. Therefore,
they will simultaneously exist in the same environment for quite
a long time. A good transition mechanism is needed to provide a
stable transition and minimize the effects on the existing users.
At present, this topic is the main target of the IETF NGTRANS work
group. Many transition mechanisms have been put forward and
some of them have been used for 6Bone. IETF recommends tran-
sition mechanisms such as tunnel technology, Dual Protocol Stack
and network address translation.
IPv6 tunnel technology encapsulates IPv6 packets in IPv4 packets,
so IPv6 packets can be transmitted in IPv4 core network.
IPv6 tunnel has the following common modes:
�
IPv6 manually configured tunnel
� Automatic 6to4 tunnel
� Automatic IPv4 compatible tunnel
Configuring a tunnel manually is equivalent to configuring a per-
manent tunnel through an IPv4 network between two IPv6 net-
works. It is to provide a stable connection for the two IPv6 net-
works at both sides of the tunnel.
To implement this purpose, configure IPv6 address, tunnel source
IPv4 address and tunnel destination IPv4 address on a tunnel in-
terface manually.
Routers or hosts at both sides of the tunnel should support dual
protocol stack.
Automatic 6to4 tunnel allows local IPv6 network to connect with a
remote IPv6 network through an IPv4 network.
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