1. 1 Scenarios of the usage of multiple home network prefixes on a logical interface draft-hong-netext-scenario-logical-interface-01 Y-G.Hong, J-S.Youn ETRI IETF-78 netext Meeting @MAASTRICHT 2010.07.28

2. 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 a 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. 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; –LMA can acknowledge each physical interface and it allocates mobility sessions for each interface and each mobility session for the each physical interface is generated ; sceanrio-1 –LMA can acknowledge only a logical interface and it allocates mobility sessions for a logical interface and mobility session for a logical interface is generated ; scenario-2 4

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

6. Scenario-1 LMA acknowledges each physical interface of a MN 6 Mobile Node Logical Interface I/F 1I/F 2 WLAN WiMAX MAG 1 MAG 2 LMA RA (Prefix=HNP#1) HNP#1 LL-ID : XXXLL-ID : YYY HNP MN- ID CoAATTMN-LL-ID HNP#1MNP-CoA14XXX HNP#2MNP-CoA25YYY P-CoA1 P-CoA2 RA (Prefix=HNP#2) HNP#2 LL-ID : ZZZ

7. Scenario-2 LMA acknowledges a logical interface of a MN 7 Mobile Node Logical Interface I/F 1I/F 2 WLAN WiMAX MAG 1 MAG 2 LMA RA (Prefix=HNP#1) HNP#1 LL-ID : XXXLL-ID : YYY HNP MN- ID CoAATTMN-LL-ID HNP#1MNP-CoA14ZZZ HNP#2MNP-CoA25ZZZ P-CoA1 P-CoA2 RA (Prefix=HNP#2) HNP#2 LL-ID : ZZZ

8. Scenario-3 All home network prefixes are shown to host IP stack 8 Mobile Node Logical Interface I/F 1I/F 2 WLAN WiMAX MAG 1 MAG 2 LMA RA (Prefix=HNP#1) HNP#1 LL-ID : XXXLL-ID : YYY HNP MN- ID CoAATTMN-LL-ID HNP#1MNP-CoA14ZZZ HNP#2MNP-CoA25ZZZ P-CoA1 P-CoA2 RA (Prefix=HNP#2) HNP#2 LL-ID : ZZZ HNP#1::ZZZ/128, HNP#2::ZZZ/128

9. Scenario-4 Only one home network prefix is shown to host IP stack 999 Mobile Node Logical Interface I/F 1I/F 2 WLAN WiMAX MAG 1 MAG 2 LMA RA (Prefix=HNP#1) HNP#1 LL-ID : XXXLL-ID : YYY HNP MN- ID CoAATTMN-LL-ID HNP#1MNP-CoA14ZZZ HNP#2MNP-CoA25ZZZ P-CoA1 P-CoA2 RA (Prefix=HNP#2) HNP#2 LL-ID : ZZZ HNP#1::ZZZ/128

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? –Then, develop as separate document or merge into Logical interface support document? 10