A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Lightweight extension to Dual-Stack lite
Author(s) : Xiaohong Deng
Mohamed Boucadair
Peng Wu
Qiong Sun
Cathy Zhou
Filename : draft-zhou-softwire-b4-nat-03.txt
Pages : 15
Date : 2011-10-25
The dual-stack lite mechanism provide an IPv4 access method over IPv6
ISP network for end users. Dual-Stack Lite enables an IPv6 provider
to share IPv4 addresses among customers by combining IPv4-in-IPv6
tunnel and Carrier Grade NAT technologies. However, with basic Dual-
stack Lite approach, CGN has to maintain active NAT sessions, which
requires processing performance, memory size for NAT sessions and log
abilities scale with number of sessions from subscribers, and hence
result in increasing of CAPEX for operators when traffic increase.
This document propose the lightweight extensions to DS-Lite, which
allows offloading NAT translation function from centralized network
side (AFTR) to distributed customer equipments (B4), thereby offering
flexibilities for ISPs to adjust trade-off between CAPEX (e.g. less
performance requirements on AFTR device), OPEX (e.g., easy and fast
deployment of Dual-Stack Lite). The ability of easily co-deploying
with basic Dual-Stack Lite is essential to lightweight extension to
DS-Lite.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-zhou-softwire-b4-nat-03.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-zhou-softwire-b4-nat-03.txt
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