A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : NAT offload extension to Dual-Stack lite
Author(s) : Xiaohong Deng
Mohamed Boucadair
Cathy Zhou
Filename : draft-zhou-softwire-b4-nat-04.txt
Pages : 13
Date : 2011-10-31
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.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-zhou-softwire-b4-nat-04.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-04.txt
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