An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: RFC Editor <email@example.com>, v6ops mailing list <firstname.lastname@example.org>, v6ops chair <email@example.com> Subject: Document Action: 'An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition' to Informational RFC (draft-ietf-v6ops-incremental-cgn-03.txt) The IESG has approved the following document: - 'An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition' (draft-ietf-v6ops-incremental-cgn-03.txt) as an Informational RFC This document is the product of the IPv6 Operations Working Group. The IESG contact persons are Ron Bonica and Dan Romascanu. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-v6ops-incremental-cgn/
Technical Summary Global IPv6 deployment was slower than originally expected. As IPv4 address exhaustion approaches, the IPv4 to IPv6 transition issues become more critical and less tractable. Host-based transition mechanisms used in dual stack environments are not able to meet the transition requirements. Most end users are not sufficiently expert to configure or maintain host-based transition mechanisms. Carrier- Grade NAT (CGN) devices with integrated transition mechanisms can reduce the operational change required during the IPv4 to IPv6 migration or coexistence period. This document proposes an incremental CGN approach for IPv6 transition. It can provide IPv6 access services for IPv6-enabled hosts and IPv4 access services for IPv4 hosts while leaving much of a legacy IPv4 ISP network unchanged. It is suitable for the initial stage of IPv4 to IPv6 migration. Unlike NAT444 based CGN alone, Incremental CGN also supports and encourages transition towards dual- stack or IPv6-only ISP networks. A smooth transition to IPv6 deployment is also described in this document. An integrated configurable CGN device and an adaptive Home Gateway (HG) device are introduced. Both HG and CGN are re-usable devices during different transition periods. It avoids potential multiple upgrades. It enables IPv6 migration to be incrementally achieved according to the real user requirements. Working Group Summary draft-ietf-v6ops-incremental-cgn-00, was accepted as v6ops WG document, 2009-11-17. Working Group Last Call completed on v6ops 10/27/10. draft 02 was was released to address grammar issues and idnits in document shepherd review. Document Quality Cross-area review from participants on the internet and transport areas has been a solicited and provided in the course of document socialization. Solicitation of directed reviews (particularly from OPS directorate) should probably be part of the post-last-call process. Personel Fred Baker is shepherd.