Transcript Transient Binding Cache Entries for Proxy Mobile IPv6

Local Mobility Anchor Resolution
for Proxy Mobile IPv6
draft-liebsch-dime-pmip6-lmaresolve-00.txt
Marco Liebsch, Paulo Loureiro, Jouni Korhonen
DIME WG session
28th July 2009
IETF#75, Stockholm
Background
• Diameter PMIPv6 operation specified in the DIME WG
– draft-ietf-dime-pmip6
• Specifies inter alia an extension between Local Mobility
Anchor (LMA) and AAA
– Mobility Session Authorization
– Assignment/Validation of a unique Home Network Prefix (HNP)
for mobile terminals
• AAA policy store maintains valuable information for
future mobility use cases (IDs, LMA, HNP, etc.)
– Predestined entity to request information from
Registration scenario example
AR
MN
attach
AAA
LMA
Authentication [NAI]
Authentication [LMA]
PBU [MNID]
Authorization +
HNP assignment
Authorization [MNID]
Authorization [HNP]
PBA [HNP]
RtAdv [HNP]
Policy Store
Address Config
MN – IDs – LMA – HNP
data
IP tunnel
Registration
Problem Space in Multi-LMA domains
AR
MN1
LMA1
anchored
LMA2
AR
MN2
anchored
IP: HNP1::Suffix1
IP: HNP2::Suffix2
data [MN1MN2]
LMA of MN2 ???
LMA1 may want to know LMA2‘s IP address:
• As forwarding information
• To send signaling to LMA2
(e.g. for route optimization)
• ...
Proposed solution for LMA Resolution
AR
MN1
anchored
IP: HNP1::Suffix1
AAA
LMA1
LMA2
Policy Store
MN1 – IDs – LMA1 – HNP1
MN2 – IDs – LMA2 – HNP2
data [MN1MN2]
LMA of MN2 ???
Query [HNP2]
Reply [IP: LMA2]
Command
data [MN1MN2]
AR
MN2
anchored
IP: HNP2::Suffix2
Status of the Problem Statement...
• NetExt WG has Localized Routing
(aka Route Optimization) for PMIPv6 on its charter
• Multi-LMA scenario in scope
(to be approved on Thursday)
• Some solution drafts require LMA resolution
– draft-loureiro-netext-pmipv6-ro-01.txt
– draft-wu-netext-local-ro-02.txt
• Diameter Query could provide useful hook to support
Multi-LMA use cases, e.g. for Localized Routing
• May become of interest to the DIME WG (?)
– draft-liebsch-dime-pmip6-lmaresolve-00.txt still cooks...