The whole sequence for localized routing Local routing capability detection Local routing Initiation LR scope or LR type negotiation Enforce Local routing Local routing service authorization Local routing path setup ID: 485475
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Slide1
Solution Overview (LR procedure)
The whole sequence for localized routingLocal routing capability detectionLocal routing InitiationLR scope or LR type negotiationEnforce Local routingLocal routing service authorizationLocal routing path setupSetup trust relationshipReach-ability checkEstablish binding and tunnelLocal routing path update during handoverSlide2
Solution Overview (MAG Initiated LR )
Localized routing(LR) Initiation
LR is Initiated by MAG
LR is enforced on MAG through LR parameters negotiating
LR parameters negotiation is done via Enhanced PBU/PBA or new LR messages.
LR parameters contain LR Scope and LR/disable/enableLocalized routing Authorization using AAA approach (Optional)Authorize the use of localized routing for both MAGsDiscover the address of the LMA to which the CN registers Localized routing SetupSetup BCE, routing table, tunnel interface table via normal PBU/PBASimilar to setup RO path between MN and CN via BU/BA described in MIP6 RO (RFC3755), Reachability can be checked; Trust relationship can be setup.
MN
Visited Domain
MAG1
LMA
Home AAA server
Home Domain
MAG2
CN
AAA Proxy
3.PBU’/LROREQ
4.PBA’/LRORSP
(Enforce LR)
1.Attach to MAG1
2.Uplink Datagram trigger
5.Service authorization
(Optional)
6.PBU/PBA
(Setup LR)
1.Attach to MAG2
7.PUB/PBA
(Setup LR)
Intra-LMA Localized Routing
Intra-MAG localized RoutingSlide3
Solution Overview (LMA Initiated LR )
1.Attach to MAG2
MN
Visited Domain
MAG1
LMA
Home AAA server
Home Domain
MAG2
CN
AAA Proxy
3.LROREQ
4.LRORSP
(Enforce LR)
1.Attach to MAG1
2.Uplink Datagram trigger
5.Service authorization
(Optional)
6.PBU/PBA
(Setup LR)
7.PUB/PBA
(Setup LR)
Localized routing(LR) Initiation
LR is Initiated by LMA
Enforce LR through LMA Initiated LR message
Localized routing Authorization using AAA approach (Optional)
The operations are same as the way in the MAG initiated LR
Localized routing Setup
The operations are same as the way in the MAG initiated LR
IPSec SA between MAGs may setup before PBU/PBA exchange
Intra-LMA Localized Routing
Intra-MAG localized RoutingSlide4
Solution Overview (handover aspect)
Local routing path update during handoverHandover case can be divided into predictive mode handover and Reactive mode handover.Context request option defined in [I-D.ietf-mipshop-pfmip6] can be used to carry context information.Context information contains CN’s MAG list with which MN is communicating.HI/Hack trigger bidirectional PBU/PBA to update the binding and tunnel.
MN
Visited Domain
pMAG1
LMA
nMAG1
MN
MAG2
1.HI(Predictive))
2.HAck
3.Attach to MAG1
CN
4.PBU/PBA
(Setup LR)
5.PBU/PBA
(Setup LR)
a. pMAG1 initiated Predictive Handover
MN
Visited Domain
pMAG1
LMA
nMAG1
MN
MAG2
2.HI(Reactive)
3.HAck
1.Attach to the nMAG1
CN
4.PBU/PBA
(Setup LR)
5.PBU/PBA
(Setup LR)
b. nMAG1 initiated Reactive HandoverSlide5
Solution Overview (Inter-LMA LR aspect)
MN
Visited Domain
MAG1
LMA1(MN)
Home AAA server
Home Domain
MAG2
CN
AAA Proxy
3.LROREQ/LRORSP
(Enforce LR[LMA2])
4.LRORSP
(Enforce LR)
1.Attach to MAG1
2.Uplink Datagram trigger
4.Service authorization
(LMA2)
7.PUB/PBA
(Setup LR)
LMA2(CN)
5.LROREQ/LRORSP
(Location Query[MAG2])
1.Attach to MAG1
Localized routing Initiation
Localized Routing Authorization and entities discovery
Authorize use of localized routing between MAG1 and MAG2
and fetch LMA2 address from AAA server in terms of MN2(Policy store)
Authorize use of localize routing and Fetch MAG2 address from LMA2
Local routing Setup
The Operations are same as the way in the intra-LMA LR.
6.Service authorization
(LMA2)Slide6
Mapping to PS/Scope
#
The scope/PS of draft-liebsch-netext-pmip6-ro-ps-01
Mapping in the Solution I-D
A
Localized routing detection
Support localized routing detection on MAG and LMA respectively
B
Localized routing Initiation
Support LR parameters negotiation, LR service authorization and LR enforcement
C
Localized routing Setup
Reuse PBU/PBA to establish LR path and tunnel between two MAGs in communication, compatible to MIPv6 RO mechanism
D
Handover support (Localized routing Update or Maintenance)
Use HI/Hack to retrieve MN’s LR states from pMAG1 and Update LR path on nMAG1
E
IPv4 support
Support IPv4 HoA and IPv4 transport
F
Possible localized routing scenarios support (Intra-MAG,Intra-LMA,inter-LMA)
Support Intra-MAG, Intra-LMA and Inter-LMA Localized routingSlide7
Appendix: LR Type Classification
LR Type 1: Intra-MAG localized routingLR Type 2: Intra-LMA localized routingLR Type 3:Inter-LMA localized routing