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Application of MIPv6 Protocol in Multi-Homing: Challenges and Solutions

This document explores the application of Mobile IPv6 (MIPv6) protocol to address multi-homing issues. It references previous works by experts in the field, outlining a typical multi-homing scenario where hosts can connect through different ISPs. The paper discusses Binding Update (BU) messages and the roles of various hosts, emphasizing the authorization of these messages through the Return Routability Procedure. The limitations and potential solutions to binding information lifetime challenges are also addressed, alongside the suggestion of a failure detection mechanism using periodic exchanges.

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Application of MIPv6 Protocol in Multi-Homing: Challenges and Solutions

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  1. Application of the MIPv6 protocol to the multi-homing problemdraft-bagnulo-multi6-mnm-00Marcelo Bagnulo – UC3M Proposed multiple times including: • F. Dupont, "Multihomed routing domain issues for IPv6 aggregatable scheme" • C. Huitema & R. Draves, "Host-Centric IPv6 Multihoming"

  2. Multi-homing Scenario Host1 Internet ISPA PrefA::/nA ISPB PrefB::/nB Multi-Homed Site PrefB:Site:Host2 PrefA:Site:Host2 Host2

  3. MIPv6 Roles Host1 CN Internet ISPA PrefA::/nA ISPB PrefB::/nB Multi-Homed Site PrefB:Site:Host2 PrefA:Site:Host2 Host2 MN

  4. Using BU messages Host1 CN ISPA ISPB PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN

  5. Using BU messages Host1 CN ISPA ISPB PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN

  6. Using BU messages BU message HoA: PrefA:Site:Host2 CoA: PrefB:Site:Host2 Host1 CN ISPA ISPB PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN

  7. Authorization of BU messages: Return Routability Procedure Host1 CN ISPA ISPB HoTI/HoT CoTI/CoT PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN

  8. So, after the BU message is successfully processed by the CN Host1 CN ISPA ISPB Type 2 Routing Header PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN

  9. So, after the BU message is successfully processed by the CN Host1 CN ISPA ISPB HoA option PrefA:Site:Host2 PrefB:Site:Host2 Host2 MN Additional mechanism to select right exit (see Huitema´s Host Centric mh)

  10. Other potential application of MIPv6 to multi-homing support • Periodical HoTI/HoT – CoTI/CoT exchange could be used as failure detection mechanism (increased frequency)

  11. Functional limitation detected • Lifetime of Binding information authorized using RR proc is limited to 7 min because of security issues

  12. Functional limitation detected • Lifetime of Binding information authorized using RR proc is limited to 7 min because of security issues • A possible solution proposed in draft-bagnulo-mobileip-unreachable-hoa

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