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Y-G.Hong , J-S.Youn ETRI IETF-79 netext Meeting @Beijing 2010.11.09

Scenarios of the usage of multiple home network prefixes on a logical interface draft-hong-netext-scenario-logical-interface-02. Y-G.Hong , J-S.Youn ETRI IETF-79 netext Meeting @Beijing 2010.11.09. Goals of this draft.

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Y-G.Hong , J-S.Youn ETRI IETF-79 netext Meeting @Beijing 2010.11.09

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  1. Scenarios of the usage of multiple home network prefixes on a logical interfacedraft-hong-netext-scenario-logical-interface-02 Y-G.Hong, J-S.Youn ETRI IETF-79 netext Meeting @Beijing 2010.11.09

  2. Goals of this draft • To describe various scenarios of the usage of a logical interface in a LMA side and a MN side • Scenarios 1 - LMA acknowledges each physical interface of a MN • Scenarios 2 - LMA acknowledges logical interface of a MN • Scenarios 3 - All home network prefixes are shown to host IP stack • Scenarios 4 - Only one home network prefix is shown to host IP stack

  3. Motivation (1/3) • Logical interface • used to hide the change of network interface from the upper host IP layer • Multihoming support of PMIPv6 • LMA MUST allocate a mobility session for each of the attached interfaces • The LMA MAY allocate more than one home network prefix for a given interface of the mobile node • The LMA MUST allow for a handoff between two different interfaces of a mobile node

  4. Motivation (2/3) • With logical interface, in LMA point of view; • Scenario-1: If link-layer identifier of each physical interface is delivered to a LMA through PBU message • LMAmay acknowledge each physical interface and it allocates mobility sessions for each interface and each mobility session for the each physical interface is generated • Scenario-2: If link-layer identifier of logical interface is delivered to a LMA through PBU message • LMA may acknowledge only a logical interface and it allocates mobility sessions for a logical interface and mobility session for a logical interface is generated

  5. Motivation (3/3) • With logical interface, in MN point of view • Scenario-3: If a LMA allocates multiple HNPs to a multiple interfaces MN, these multiple home network prefixes are totally shown to the host IP stack • Scenario-4: Even though a LMA allocates multiple HNPs to a multiple interfaces MN, only one home HNP is shown to the host IP stack • If a logical interface hides the change of interfaces and also can hide the change of home network prefixes

  6. Scenario-1 • LMA acknowledges each physical interface of a MN LMA MAG 2 MAG 1 P-CoA2 P-CoA1 RA (Prefix=HNP#1) RA (Prefix=HNP#2) WiMAX WLAN LL-ID : XXX LL-ID : YYY I/F 1 I/F 2 HNP#2 HNP#1 Logical Interface LL-ID : ZZZ Mobile Node

  7. Scenario-2 • LMA acknowledges a logical interface of a MN LMA MAG 2 MAG 1 P-CoA2 P-CoA1 RA (Prefix=HNP#1) RA (Prefix=HNP#2) WiMAX WLAN LL-ID : XXX LL-ID : YYY I/F 1 I/F 2 HNP#2 HNP#1 Logical Interface LL-ID : ZZZ Mobile Node

  8. Scenario-3 • All home network prefixes are shown to host IP stack LMA MAG 2 MAG 1 P-CoA2 P-CoA1 RA (Prefix=HNP#1) RA (Prefix=HNP#2) WiMAX WLAN LL-ID : XXX LL-ID : YYY I/F 1 I/F 2 HNP#2 HNP#1 Logical Interface LL-ID : ZZZ HNP#1::ZZZ/128, HNP#2::ZZZ/128 Mobile Node

  9. Scenario-4 • Only one home network prefix is shown to host IP stack LMA MAG 2 MAG 1 P-CoA2 P-CoA1 RA (Prefix=HNP#1) RA (Prefix=HNP#2) WiMAX WLAN LL-ID : XXX LL-ID : YYY I/F 1 I/F 2 HNP#2 HNP#1 Logical Interface LL-ID : ZZZ HNP#1::ZZZ/128 Mobile Node 9 9

  10. Next Step? • Is describing various scenario of the usage of logical interface in PMIPv6 necessary? • Or should we target on a specific scenario? • Scenario-1 vs. Scenario-2 • Scenario-3 vs. Scenario-4 • Is there interest in WG?

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