+1 I support 4rd as a WG item.
Tomoki > Hello all, > > > Le 21 mars 2011 à 22:29, IESG Secretary a écrit : > >> A modified charter has been submitted for the Softwires (softwire) >> working group in the Internet Area of the IETF. The IESG has not made any >> determination as yet. The modified charter is provided below for >> informational purposes only. > >> Please send your comments to the IESG >> mailing list ([email protected]) by Tuesday, March 29, 2011. > > The main comment of this mail is a suggestion to add 4rd to the charter, in > view of the following: > - It is a tunnel solution for IPv4 across IPv6 networks > - Implementations have already been made > - Some ISP's have expressed their preference for this stateless solution over > a stateful solution (DS-lite) > - A proposed specification is available for WG comments > > It is distinct from other solutions in that: > - Unlike 6rd it is for IPv4 over IPv6 > - Unlike DS-lite, it optimizes routing between CE's with point to multipoint > tunnels and needs no CGN. > - Unlike Mesh solutions, it doesn't need a (stateful) BGP between AFBR's > (it's route selections are stateless). > > Proposed additions to the charter text are in line. > > > Regards, > RD > > >> >> Softwires (softwire) >> --------------------------------------------------- >> Current Status: Active Working Group >> >> Chairs: >> Alain Durand <[email protected]> >> Yong Cui <[email protected]> >> >> Internet Area Directors: >> Ralph Droms <[email protected]> >> Jari Arkko <[email protected]> >> >> Internet Area Advisor: >> Ralph Droms <[email protected]> >> >> Mailing Lists: >> General Discussion: [email protected] >> To Subscribe: [email protected] >> Archive: >> http://www.ietf.org/mail-archive/web/softwires/current/maillist.html >> >> Description of Working Group: >> >> The Softwires Working Group is specifying the standardization of >> discovery, control and encapsulation methods for connecting IPv4 >> networks across IPv6 networks and IPv6 networks across IPv4 networks >> in a way that will encourage multiple, inter-operable >> implementations. >> >> For various reasons, native IPv4 and/or IPv6 transport may not be >> available in all cases, and there is a need to tunnel IPv4 in IPv6 >> or IPv6 in IPv4 to cross a part of the network which is not IPv4 or >> IPv6 capable. The Softwire Problem Statement, RFC 4925, identifies >> two distinct topological scenarios that the WG will provide >> solutions for: "Hubs and Spokes" and "Mesh." In the former case, >> hosts or "stub" networks are attached via individual, >> point-to-point, IPv4 over IPv6 or IPv6 over IPv4 softwires to a >> centralized Softwire Concentrator. In the latter case (Mesh), >> network islands of one Address Family (IPv4 or IPv6) are connected >> over a network of another Address Family via point to multi-point >> softwires among Address family Border Routers (AFBRs). >> >> The WG will reuse existing technologies as much as possible and only >> when necessary, create additional protocol building blocks. >> >> For generality, all base Softwires encapsulation mechanisms should >> support all combinations of IP versions over one other (IPv4 over >> IPv6, IPv6 over IPv4, IPv4 over IPv4, IPv6 over IPv6). IPv4 to IPv6 >> translation mechanisms (NAT-PT), new addressing schemes, and block >> address assignments are out of scope. DHCP options developed in this >> working group will be reviewed jointly with the DHC WG. RADIUS >> attributes developed in this working group will be reviewed jointly >> with the RADEXT WG. The MIB Doctors directorate will be asked to >> review any MIB modules developed in the SOFTWIRE working group. BGP >> and other routing and signaling protocols developed in this group >> will be reviewed jointly with the proper working groups and other >> workings that may take interest (e.g. IDR, L3VPN, PIM, LDP, SAAG, >> etc). >> >> The specific work areas for this working group are: >> >> 1. Developments for Mesh softwires topology; the Mesh topology work >> will be reviewed in the l3vpn and idr WGs >> - multicast >> - MIB module >> >> 2. Developments for 6rd: >> - multicast >> - operational specification >> - RADIUS option for 6rd server >> - MIB module >> >> 3. Developments for Dual-Stack Lite (DS-Lite): >> - multicast >> - operational specification >> - RADIUS option for AFTR >> - proxy extensions; GI-DS-Lite; DS-Lite with no NAT or NAT on the >> B4 element >> - MIB module >> >> 4. Finalize discovery and configuration mechanisms for a gateway to >> use DS-Lite or 6rd; these discovery and configuration mechanisms >> must take into a account other operating environments such as >> dual-stack and tunneling mechanisms not defined by the softwire >> WG. Development of new mechanisms will involve the dhc and/or >> v6ops WGs as appropriate > > 5. Development for 4rd (stateless tunneling for IPv4 over IPv6) > - architecture and protocol specification > - operational specification > - MIB module >> >> Other work items would require WG approval and rechartering. >> >> Goals and Milestones: >> Apr 2011 Submit DS-lite RADIUS option for Proposed Standard >> Apr 2011 Adopt DS-lite operational document as WG document >> Jul 2011 Submit 6rd RADIUS option for Proposed Standard >> Jul 2011 Submit GI DS-lite for Proposed Standard >> Jul 2011 Adopt B4NAT as WG document > July 2011 Adopt the 4rd architecture an protocol document as WG document >> Aug 2011 Adopt 6rd operational document as WG document >> Aug 2011 Adopt Multicast extensions document as WG document >> Aug 2011 Submit DS-lite operational document for Informational >> Sep 2011 Submit B4NAT for Informational >> Nov 2011 Submit Multicast extensions document for Informational >> Nov 2011 Submit 6rd operational document for Informational >> Nov 2011 Adopt 6rd MIB module as WG document >> Nov 2011 Adopt DS-lite MIB module as WG document >> Nov 2011 Adopt Mesh topology MIB module as WG document > Nov 2011 Submit the 4rd architecture an protocol document for Proposed > Standard > Nov 2011 Adopt the 4rd operational document as WG document > Nov 2011 Adopt the 4rd MIB module as WG document >> Nov 2012 Submit 6rd MIB module for Proposed Standard >> Nov 2012 Submit DS-lite MIB module for Proposed Standard >> Nov 2012 Submit Mesh topology MIB module for Proposed Standard > Nov 2012 Submit 4rd operational document for Informational > Nov 2012 Submit 4rd MIB module for Proposed Standard > > >> >> >> _______________________________________________ >> Softwires mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/softwires _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
