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Thomas C. Schmidt, Matthias Wählisch, Rajeev Koodli, Gorry Fairhurst

Multicast Context Transfer for Mobility Protocol Standards draft-schmidt-multimob-fmipv6-pfmipv6-multicast-04. Thomas C. Schmidt, Matthias Wählisch, Rajeev Koodli, Gorry Fairhurst. Motivation of this work. Context transfer is mainly an issue between Access Routers  Fast Handovers

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Thomas C. Schmidt, Matthias Wählisch, Rajeev Koodli, Gorry Fairhurst

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  1. Multicast Context Transfer for Mobility Protocol Standards draft-schmidt-multimob-fmipv6-pfmipv6-multicast-04 Thomas C. Schmidt, Matthias Wählisch, Rajeev Koodli, Gorry Fairhurst

  2. Motivation of this work • Context transfer is mainly an issue between Access Routers  Fast Handovers • Plugging into Mobility Management Schemes harmonizes protocol suite start from FMIPv6 / PFMIPv6 • Fast Context transfer requires fast handoff Cannot overrun unicast reassociation

  3. Status of the Draft • Initial work flowing out of MobOpts (IETF 74) • First presented in Anaheim (IETF 77) (v1) • Updated Version 2 (Sept. ‘10): • Major revision, filled in details • Updated Version 3 (Nov. ‘10): • Completed remaining details • Updated Version 4 (May ‘11): • Minor update • Currently in wait for progressing

  4. Design Objectives • Optimizeforseamlesshandover • Synchronizemulticastwithunicastoperations • Alignwithmobilityprotocols • Transparentlyplug in multicastof all flavors • Abstract frommulticastrouting • Remainindependentofroutingsolution • Simplifyprotocolextensions • Useexistingmessagestructures

  5. Main Contributions • Defines a coherent multicast membership transfer based on MLD/IGMP state records (easy handling) • Defines a common Multicast Mobility Header Option • Defines per group feedback in Multicast Acknowledgement Option • Dynamically steers Multicast forwarding via MLD • Transparently accounts for MLD/IGMP interoperability • Seamlessly plugs into FMIPv6 and PFMIPv6 protocol semantics and behavior

  6. Summary & Outcome • Document matured in details • Protocol includes transport of MLD records in MobOpt/ AckOpt Mobility Options, IPv4 support, MLD interoperability, … • Several reviews arrived: • Please have a look & help to improve the document! Proposal to WG: Adopt this as a WG item

  7. Questions/Comments?

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