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NEMO Multi-homing Issues

NEMO Multi-homing Issues. Prepared for 59 th IETF NEMO WG By Chan-Wah NG, Eun-Kyoung PAIK, Thierry ERNST, Julien CHARBON 2004 03 01 draft-ng-nemo-multihoming-issues-03.txt. Change-Log. Changes to draft-ng-nemo-multihoming-issues merged in draft-paik-nemo-multihoming-problem

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NEMO Multi-homing Issues

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  1. NEMO Multi-homing Issues Prepared for 59th IETF NEMO WG By Chan-Wah NG, Eun-Kyoung PAIK, Thierry ERNST, Julien CHARBON 2004 03 01 draft-ng-nemo-multihoming-issues-03.txt 59th IETF – NEMO Working Group

  2. Change-Log • Changes to draft-ng-nemo-multihoming-issues • merged in draft-paik-nemo-multihoming-problem • moved alternatives classifications to appendix • based benefits/goals from draft-multihoming-generic-goals-and-benefits-00.txt • title change to “Analysis of Multihoming in Network Mobility Support” 59th IETF – NEMO Working Group

  3. Contents (1) • Sect 1: Introduction • Important thing is the objective: • To identify which multihoming configurations are useful • To capture issues for deploying a multihomed mobile network • Assuming NEMO Basic Support solution is used 59th IETF – NEMO Working Group

  4. Contents (2) • Sect 2: Classification • The usual (x,y,z) classification • x = number of MRs where x=1 implies a single mobile router with multiple interfaces and x=N implies multiple mobile routers • y = number of home-agent • z = number of NEMO-Prefix announced to the MNNs • Important point is to identify the useful classifications • We will return to this when we talk about Section 5 59th IETF – NEMO Working Group

  5. Contents (3) • Sect 3: Benefits & Goals of Multihoming in NEMO • Give deployment scenarios of each of five goals/benefits identified in draft-multihoming-generic-goals-and-benefits-00.txt • Ubiquitous Access • Redundancy/Fault-Recovery • Load Sharing • Load Balancing • Preference Settings 59th IETF – NEMO Working Group

  6. Contents (4) • Sect 4: Problem Statement • Identifies the main problem when trying to reach the goals with NEMO • Connection Availability • Connection Selection • Scalability • RO Consideration • Ingress Filtering • Failure Detection 59th IETF – NEMO Working Group

  7. Contents (5) • Sect 5: Evaluation of Basic NEMO Solution • Discusses issues and problems implementers might face for each of the 8 identified multihomed NEMO configurations 59th IETF – NEMO Working Group

  8. Moving Forward • Decide on which scenario is useful for NEMO • Is the content structure of the draft okay? • Introduction • Classification/Taxonomy • Benefits/Scenarios • Problem Statement • Evaluation of NEMO Basic Support 59th IETF – NEMO Working Group

  9. HA INTERNET MR P MNN MNN (1,1,1): 1 MR, 1 HA, 1 Prefix • Scenario: • Multi-mode MR (a MR with GPRS and 802.11) • Benefits: • Ubiquitous Access, Redundancy/Fault-Recovery • Problems/Issues: • Need to associate multiple CoAs to one NEMO prefix • Clearly NEMO-Specific 59th IETF – NEMO Working Group

  10. HA INTERNET MR P1,P2 MNN MNN (1,1,N): 1 MR, 1 HA, N Prefixes • Scenario: • Car with a single MR and different sub-nets, one for sensors, one for data • Benefits: • Ubiquitous Access, Redundancy/Fault-Recovery • Problems/Issues: • Need to associate multiple CoAs with one or multiple prefixes 59th IETF – NEMO Working Group

  11. HA-2 HA-1 INTERNET MR P MNN MNN (1,N,1): 1 MR, N HA, 1 Prefix • Scenario: • dynamically assign/selects home-agents to reduce delays • Transatlantic flight • Benefits: • Ubiquitous Access (reduce delays) • Redundancy (HA failure) • Problems/Issues: • One HoA registered at different home agents • MIPv6 specific • One NEMO-Prefix advertised by different home agents • Complex problem • Best left to multi6 WG 59th IETF – NEMO Working Group

  12. HA-2 HA-1 INTERNET MR P1,P2 MNN MNN (1,N,N): 1 MR, N HAs, N Prefixes • Scenario: • Multi-mode MRs (8012.11+3G) subscribing to different ISPs • Benefits: • Ubiquitous Access, Fault-Recovery • Problems/Issues: • Similar problems with (1,N,1) • However, NEMO can support the case when each NEMO-Prefix is only registered with one home agent 59th IETF – NEMO Working Group

  13. HA INTERNET MR-2 MR-1 P P MNN MNN (N,1,1): N MRs, 1 HA, 1 Prefix • Scenario: • Multiple MRs • A Wireless-PAN with GPRS phone and 802.11 PDA • Benefits: • Load-Sharing, Ubiquity, Fault-Recovery • Problems/Issues: • None 59th IETF – NEMO Working Group

  14. HA INTERNET MR-2 MR-1 P2 P1 MNN MNN (N,1,N): N MRs, 1 HA, N Prefixes • Scenario: • Trains/ships with one MR in each car/cabin • Benefits: • Load Sharing • Problems/Issues: • None 59th IETF – NEMO Working Group

  15. HA-1 HA-2 INTERNET MR-2 MR-1 P P MNN MNN (N,N,1): N MRs, N HAs, 1 Prefix • Scenario: • Train/Ship with satellite dish and antenna to use ground-bases telecommunications infrastructure • Benefits: • Load-sharing, Fault-recovery • Problems/Issues: • Same issue as (1,N,1) where one NEMO-prefix is registered at two home-agents 59th IETF – NEMO Working Group

  16. HA-1 HA-2 INTERNET MR-2 MR-1 P2 P1 MNN MNN (N,N,N) Mobile Network • Scenario: • W-PAN with 802.11 PDA and GPRS Phone subscribing to different ISPs • Benefits: • Load-Sharing, Fault-Recovery, Ubiquitous Access • Problems/Issues: • Main problem is if a prefix is registered by more than one home-agent • NEMO can support the case when each NEMO-Prefix is only registered to one home-agent • Issue raised on burden of MNNs to remember which MR advertises which prefix 59th IETF – NEMO Working Group

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