Lightweight 4over6: An Extension to DS-Lite Architecture draft-cui-softwire-b4-translated-ds-lite-11 IETF 86-Orlando, March 2013 Y. Cui, Q. Sun, M.

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Presentation transcript:

Lightweight 4over6: An Extension to DS-Lite Architecture draft-cui-softwire-b4-translated-ds-lite-11 IETF 86-Orlando, March 2013 Y. Cui, Q. Sun, M. Boucadair, T. Tsou, Y. Lee and I. Farrer (Presenter)

Overview of Lightweight 4over6 A simple extension for DS-Lite The Binding approach described in the unified CPE draft Per-subscriber state maintenance on AFTR Good scalability for overwhelming traffic; easy/no logging No IPv4/IPv6 address coupling Operation simplicity: no extra requirement on address planning Flexible port management: on-demand/pre-configured IPv4 addr + port-set provisioning DS-Lite backward compatibility

Self-determined mapping in lw4o6 Provisioning System IPv4 Domain IPv6 Lw4o6 Prefix CPE (NAT) Configuration: IPv6 address pools IPv4 address pools Port-set quota Maintains per-subscriber mapping entries, but no need to manually configure all these mappings IPv4 address pool 210.0.0.0/24 211.0.2.0/24 IPv6 address pool 2001:20::/48 Port-set quota:100 210.0.0.1 2001:20::1 [301~400] 210.0.0.1 2001:20::2 [401~500] 210.0.0.1 2001:20::3 [501~600] Operators have full flexibility on addressing planning and configuration. Subscribers can simplify retrieve the port-set+IPv4 address.

Outcome of IETF-85 WG guidance on next step A new draft describing a ‘unified’ softwire 4o6 CPE (incl. MAP and lw4over6) Lw4over6 can move forward based on unified CPE A successful interop demo at the BnB event including five participants from Huawei, Tsinghua, GreenNet, China Telecom, Yamaha

Updates from -09 Specify the relationship of lw4o6 and unified CPE Simplify the CE configuration parameters part by giving a reference to the section 2.2 of unified CPE Modify the lwB4 Provisioning by referencing to unified CPE For port-set algorithm, add a reference to unified CPE and MAP. Substantial edits.

Update Test/Trial We have published the source code on: http://sourceforge.net/projects/laft6/ We already have run field trial/test in: China Telecom, Deutsche Telekom, CERNET2, Freebit We already have conducted Interop test among five participants: Huawei, Tsinghua, GreenNet, China Telecom,Yamaha We already have commerial products from lwAFTR: Huawei, Juniper lwB4: Fiberhome, Yamaha Other vendors are also implementing it…

Next Steps The current version reflects the requirements of the WG The implementation and trial result are good Call For Workgroup Adoption?