[MEXT] Gateway Initiated Dual-stack lite Support

[Sri Gundavelli <sgundave at cisco.com>]

We have posted a draft on using Gateway Initiated Dual-stack lite 
approach for IPv6 migration support. Following is the pointer to
the draft.

http://www.ietf.org/id/draft-gundavelli-softwire-gateway-init-ds-lite-00.txt

The key aspect of this solution is the approach by which we are applying
dual-stack lite solution to IP mobility architectures. In this gateway
initiated dual-stack lite mode we are leveraging the mobile tunnel
by extending it to the CGN, and by using a UE specific softwire for
session identification.

Please review and comment.



Abstract

   Dual-Stack lite has been proposed as a IPv4 to IPv6 transition
   technology.  Dual-stack lite allows a service provider to migrate his
   network to IPv6, while still offering IPv4 services to the end
   customer.  The dual-stack lite solution uses an IPv4 over IPv6 tunnel
   between a host (or access device) and a dual-stack lite large scale
   NAT.  Several existing network architectures (e.g. 3GPP, WiMAX, or
   PPP based broadband networks) already specify dual-stack deployment
   and leverage tunneling technology between the access device and an
   access gateway in the provider network.  Applying the existing dual-
   stack lite concept to these networks will result in changes to the
   end-system and unnecessary tunneling overhead.  This draft describes
   a modified implementation of dual-stack lite where existing access
   tunnels are extended beyond the access gateway to the dual-stack lite
   large scale NAT using softwires.  This evolved approach applies to
   IPv4 as well as IPv6 networks.


Regards





---------- Forwarded message ----------
Date: Tue, 13 Oct 2009 18:08:24 -0700 (PDT)
From: IETF I-D Submission Tool <idsubmission at ietf.org>
To: sgundave at cisco.com
Cc: fbrockne at cisco.com
Subject: New Version Notification for
    draft-gundavelli-softwire-gateway-init-ds-lite-00


A new version of I-D, draft-gundavelli-softwire-gateway-init-ds-lite-00.txt has been successfuly submitted by Sri Gundavelli and posted to the IETF repository.

Filename:	 draft-gundavelli-softwire-gateway-init-ds-lite
Revision:	 00
Title:		 Gateway Initiated Dual-Stack Lite Deployment
Creation_date:	 2009-10-13
WG ID:		 Independent Submission
Number_of_pages: 21

Abstract:
Dual-Stack lite has been proposed as a IPv4 to IPv6 transition
technology.  Dual-stack lite allows a service provider to migrate his
network to IPv6, while still offering IPv4 services to the end
customer.  The dual-stack lite solution uses an IPv4 over IPv6 tunnel
between a host (or access device) and a dual-stack lite large scale
NAT.  Several existing network architectures (e.g. 3GPP, WiMAX, or
PPP based broadband networks) already specify dual-stack deployment
and leverage tunneling technology between the access device and an
access gateway in the provider network.  Applying the existing dual-
stack lite concept to these networks will result in changes to the
end-system and unnecessary tunneling overhead.  This draft describes
a modified implementation of dual-stack lite where existing access
tunnels are extended beyond the access gateway to the dual-stack lite
large scale NAT using softwires.  This evolved approach applies to
IPv4 as well as IPv6 networks.



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