FYI. We just wanted to draw your attention to a new draft "Gateway Initiated Dual-stack lite" - which outlines a modified deployment approach of the original dual-stack lite. The approach applies to those network architectures which already employ some form of tunneling technology in the access network. The key idea is to leverage the existing access tunnel (which means that architectural changes within the access network are limited to the gateway terminating access tunnel) and stitch it together with a softwire connecting to the CGN. While largely targeted at mobility architectures, the solution could be applied to broadband environments as well.
A copy of the draft is available at: http://www.ietf.org/id/draft-gundavelli-softwire-gateway-init-ds-lite-00 .txt We appreciate your thoughts and comments. Thanks & regards, Sri & Frank --- 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. ---------- Forwarded message ---------- Date: Tue, 13 Oct 2009 18:08:24 -0700 (PDT) From: IETF I-D Submission Tool <[email protected]> To: [email protected] Cc: [email protected] 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. The IETF Secretariat. _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
