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HA initiated bootstrap for MIP6

HA initiated bootstrap for MIP6. Qin Li liqin@cse.buaa.edu.cn Hui Deng hdeng@hitachi.cn. Motivation. Problem found: HA Reliability Notification sent from a new HA other than current HA Solution and conclusion: we need HA initiated Bootstrap. Related Solution. 1) [ID.jfaizan-mipv6-vhar]

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HA initiated bootstrap for MIP6

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  1. HA initiated bootstrap for MIP6 Qin Li liqin@cse.buaa.edu.cn Hui Deng hdeng@hitachi.cn

  2. Motivation • Problem found: HA Reliability • Notification sent from a new HA other than current HA • Solution and conclusion: we need HA initiated Bootstrap

  3. Related Solution • 1) [ID.jfaizan-mipv6-vhar] • SAD synchronization between multiple HAs Problem • Some fields in SA will change per packet • Hard to maintain consistency • 2) [ID.devarapalli-mip6-nemo-local-haha] • Using IKE to negotiate IPsec Problem • Src and dest addr of new SA will be MN’s CoA & new HA’s address (not HoA) • Another IKE is needed to complete the bootstrapping

  4. Protocol Operation +----+ +----+ +-----+ | MN | | HA | | DNS | +----+ +----+ +-----+ IKEv2 exchange (HoA configuration) <====================== ======================> HAS message <----------------------- BU (DNS update option) -----------------------> DNS update <-------------------> BA (DNS update option) <-----------------------

  5. Scenario of our solution could be used1) Reliability • When a MN lost its current HA due to failure or other reasons • It could be slow for the MN to detect the failure • Backup HA could detect the failure in time • The Backup HA need to initiated the bootstrap for MN • Without HA initiated bootstrap • MN may not restore mobility in a short time

  6. Scenario of our solution could be used2) Home Agent assignment • HA assignment based on • User profile • Dynamic load state of HAs • A1, B1 is MN initiated bootstrap • A4, B3 is HA initiated bootstrap a1 a2 b1 HA1 HA1 b2 MN AAA MN HA2 HA2 a3 a4 b3

  7. Next Step • WG item?

  8. Appendix

  9. IKEv2 Exchange – Auth Home Agent Mobile Node ---------- ----------- HDR, SAi1, KEi, Ni --> <-- HDR, SAr1, KEr, Nr, [CERTREQ] HDR, SK {IDi, [CERT,] [CERTREQ,] [IDr,] AUTH, SAi2, TSi, TSr} --> <-- HDR, SK {IDr, [CERT,] AUTH, SAr2, TSi, TSr} • Home Agent MUST includes its identity in the IDi payload • Mobile Node MUST includes its identity in the IDr payload • When IKE_AUTH exchange completes, the Home Agent MUST initiate CREATE_CHILD_SA messages

  10. IKEv2 Exchange – Child SA Home Agent Mobile Node ---------- ----------- HDR, SK {[N], SA, Ni, [KEi], [TSi, TSr]} --> <-- HDR, SK {SA, Nr, [KEr], [TSi, TSr]} • Home agent MUST set the TSr payload to the mobile node's home address

  11. HoA Configuration Home Agent Mobile Node ---------- ----------- HDR, SK {IDi, [CERT,] [CERTREQ,] [IDr,] AUTH, CP(CFG_REPLY), SAi2, TSi, TSr} --> <-- HDR, SK {IDr, [CERT,] AUTH, SAr2, TSi, TSr} • an unsolicited CFG_REPLY payload with INTERNAL_IP6_ADDRESS is included in the IKE_AUTH

  12. Modified Home Agent Switch Message 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |# of Addresses |B| Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + . . . Home Agent Addresses . . . + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + . . . Mobility options . . . + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

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