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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-03. 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-03 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 • Context transfer now on charter of MULTIMOB Reminder to a matured work

  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 • Currently in wait for progressing

  4. 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 • Accounts for MLD/IGMP interoperability • Seamlessly plugs into FMIPv6 and PFMIPv6 protocol semantics and behavior

  5. FMIPv6 Predictive Handover MN PAR NAR | | | |------RtSolPr------->| | |<-----PrRtAdv--------| | | | | | | | |---------FBU-------->|----------HI--------->| | (Multicast MobOpt) | (Multicast MobOpt) | | | | | |<--------HAck---------| | | (Multicast AckOpt) | | | Join to | | Multicast | | Groups | | | | <-----FBack---|--FBack------> | | (Multicast AckOpt) | (Multicast AckOpt) | | | | disconnect forward | | packets ===============>| | | | | | | connect | | | | | |------------UNA --------------------------->| |<=================================== deliver packets | |

  6. PMAG NMAG MN P-AN N-AN (PAR) (NAR) | | | | | | Report | | | | |---(MN ID,-->| | | | | New AP ID) | | | | | | HO Indication | | | |--(MN ID, New AP ID)-->| | | | | | | | | | Optional: | | | | MLD Query | | | | | | | | | |------HI---->| | | | |(Multicast MobOpt) | | | | | | | | |<---HAck-----| | | | |(Multicast AckOpt) | | | | | | | | | Join to | | | | Multicast | | | | Groups | | | | | | | | |HI/HAck(optional) | | | |<- - - - - ->| | | | | | | | | forward | | | | packets =======>| disconnect | | | | | | | | | connect | | | | | MN-AN connection | AN-MAG connection | |<----establishment----->|<----establishment------->| | | | (substitute for UNA) | | | | | | |<========================================== deliver packets | | | | | PFMIPv6 Predictive Handover

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

  8. Questions/Comments?

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