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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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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
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
status of the draft
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
main contributions
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
fmipv6 predictive handover
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

| |

pfmipv6 predictive handover

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
summary outcome
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