A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the IPv6 Operations Working Group of the IETF.
Title : An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition
Author(s) : S. Jiang, D. Guo, B. Carpenter
Filename : draft-ietf-v6ops-incremental-cgn-01.txt
Pages : 14
Date : 2010-6-18
Global IPv6 deployment was slower than originally expected in the last ten years. As IPv4 address exhaustion gets closer, the IPv4/IPv6
transition issues become more critical and complicated. Host-based
transition mechanisms are not able to meet the requirements while
most end users are not sufficiently expert to configure or maintain
these transition mechanisms. Carrier-Grade NAT (CGN) with integrated
transition mechanisms can simplify the operation of end users during
the IPv4/IPv6 migration or coexistence period. This document proposes
an incremental CGN approach for IPv6 transition. It can provide IPv6
access services for IPv6-enabled end hosts and IPv4 access services
for IPv4 end hosts while remaining most of legacy IPv4 ISP networks
unchanged. It is suitable for the initial stage of IPv4/IPv6
migration. Unlike NAT444 CGN alone, it also supports and encourages
transition towards dual-stack or IPv6-only ISP networks. A smooth
transition mechanism is also described in this document. It
introduces an integrated configurable CGN device and an adaptive Home
Gateway (HG) device. Both HG and CGN are re-usable devices during
different transition periods. It avoid potential multiple upgrade.
ISPs have NOT to make a big transition decision. It enables IPv6
migration to be incrementally achieved according to the real user
requirements. So ISPs have NOT to make a big transition decision.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-v6ops-incremental-cgn-01.txt
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