[Softwires] Fw: New Version Notification for draft-cui-softwire-b4-translated-ds-lite-04.txt

["peng-wu@foxmail" <[e-mail]>]

Hi all,

We've submitted a -04 version of the b4-translated-ds-lite draft.
It describes the per-user-state IPv4-over-IPv6 mechanism with port set support, which can be achieved through some extensions to ds-lite.
There are discussions going on upon this topic during and after the Interim meeting.
We've received quite a lot offline comments/suggestions, and made progresses accordingly.

The draft is available on http://tools.ietf.org/html/draft-cui-softwire-b4-translated-ds-lite-04
Please provide your valuable comments. And hopefully we'll present it in Taipei.







u---
A new version of I-D, draft-cui-softwire-b4-translated-ds-lite-04.txt has been successfully submitted by Qiong Sun and posted to the IETF repository.

Filename:	 draft-cui-softwire-b4-translated-ds-lite
Revision:	 04
Title:		 Lightweight 4over6 in access network
Creation date:	 2011-10-30
WG ID:		 Individual Submission
Number of pages: 24

Abstract:
   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.  However, in dual-stack lite, CGN has
   to maintain active NAT sessions, which could become the performance
   bottom-neck due to high dynamics of NAT entries, memory cost and log
   issue.  This document propose the lightweight 4over6 mechanism which
   moves the translation function from tunnel concentrator (AFTR) to
   initiators (B4s), and hence reduces the mapping scale on the
   concentrator to per-customer level.  For NAT44 translation usage, the
   mechanism allocates port restricted IPv4 addresses to initiators in a
   flexible way independent of IPv6 network in the middle.

                                                                                  


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