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Simultaneous Location in Home and Foreign in Monami6

Simultaneous Location in Home and Foreign in Monami6. 65 th IETF at Dallas, Texas, USA Benjamin Koh Keigo Aso. Contents. Limitations with MIPv6 and MCoA Scenario Problem Possible Operations Mailing List Discussions Conclusion. MIPv6: Limitation of One Forwarding Destination.

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Simultaneous Location in Home and Foreign in Monami6

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  1. Simultaneous Location in Home and Foreign in Monami6 65th IETF at Dallas, Texas, USA Benjamin Koh Keigo Aso

  2. Contents • Limitations with MIPv6 and MCoA • Scenario • Problem • Possible Operations • Mailing List Discussions • Conclusion

  3. MIPv6: Limitation of One Forwarding Destination • Mobile IPv6 allows MN to use primary CoA and to register only it at HA. • The primary CoA is used as the forwarding destination for all packets addressed to HoA by the HA. • When the MN is at home, the HA may be unable to intercept any packets addressed to MN’s HoA.

  4. MCoA: Limitation on Simultaneous Usage of Home and Foreign Links • MCoA ID states: “It is impossible to utilize all the interfaces when one interface is attached to the home link and the others are attached to foreign links.” • Implementer chooses whether only the home link or foreign links is to be used.

  5. Requirement of Simultaneous Location Binding Cache HoA-CoA1 HoA-CoA2 home network HA • MN can set preference for each flow in HA. • HA can select the IF for a distributed flow. • Even if IF1 is connected to home network, HA can choose either Path1 or Path2 for forwarding flows. Path2 foreign network2 Path1 foreign network1 FlowA FlowB CoA1 IF1 IF2 CoA2 MN Binding Cache ??? foreign network2 home network HA FlowA + FlowB FlowA + FlowB HoA(?) CoA2 IF1 IF2 MN

  6. Problem • The MN cannotuse both of its IFfor flows. • If it use IF2, it must register a binding cache at HA. • If it use IF1, it must de-register a binding cache at HA. • The preferences in HA set by the MN before the movement is not available any more.

  7. Possible Operation Binding Cache HoA-CoA2 HoA-home CoA • Using a CoA (home CoA) at home network. • HA still performs proxy ND for MN HoA foreign network2 home network HA FlowB FlowA home CoA IF1 IF2 CoA2 MN

  8. ML Discussion • Only the flows explicitly specified should be forwarded to the CoA, otherwise, they should be forwarded using normal (MCoA) routing. • HA cannot choose the forwarding path to MN • MN must explicitly manage flows for each CN

  9. ML Discussion • Scenario could be achieved by home network configuration. HA is configured with virtual home link. • This is a configuration assumption, not a solution

  10. Observation • By having the MN use CoA at home network allows for flow control by HA at any time

  11. Next Steps • Is the scenario/requirement addressed clearly? • Has the problem(s) been adequately addressed? • Any interest to develop possible solutions to the problem(s)?

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