NAT offload extension to Dual-Stack lite
draft-zhou-softwire-b4-nat-04
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Authors | Cathy Zhou , Mohamed Boucadair , Xiaohong Deng | ||
| Last updated | 2012-05-03 (Latest revision 2011-10-31) | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
Dual-Stack Lite, combining IPv4-in-IPv6 tunnel and Carrier Grade NAT technologies, provides an approach that offers IPv4 service via IPv6 network by sharing IPv4 addresses among customers during IPv6 transition period. Dual-stack lite, however, requires CGN to maintain active NAT sessions, which means processing performance, memory size and log abilities for NAT sessions should scale with number of sessions of subscribers; Hence increasing in CAPEX for operators would be resulted in when traffic increase. This document propose the NAT offload extensions to DS-Lite, which allows offloading NAT translation function from centralized network side (AFTR) to distributed customer equipments (B4), thereby offering a trade-off between CAPEX (e.g. less performance requirements on AFTR device) and OPEX (e.g., easy and fast deployment of Dual-Stack Lite) for operators. The ability of easily co-deploying with basic Dual- Stack Lite is essential to NAT offload extension to DS-Lite.
Authors
Cathy Zhou
Mohamed Boucadair
Xiaohong Deng
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)