Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
Old AR
New AR
User Space
AAA Att.
User Space
AAA Att.
1.
Trigger
ctxTran
FHO Mod.
Kernel
2.
CtxtoFHO
3. Handover Initiate
FHO Mod.
Kernel
4.
CtxtoAtt
Figure 83: FHO module and Attendant interaction during FHO
On receiving a “Router Solicitation for Proxy” message form the MN, the FHO module at the old access
router requests the AAA Attendant for the context associated with the MN. The FHOmodule executes the
function “StartCtxTransfer” which contains identification of the message (MesgType) e.g.
StartCtxTransfer, SendctxToAtt or SendctxToFHO and the length of this message
4.5.2.6 Diameter / foreign server
The main functions of a foreign server are to support the mobile users to be able to access the network
from outside their home network. For this purpose the AAAC.f must also support MIP.
Upon receiving an AA Registration Request (ARR.f) message, the AAAC.f: The foreign server then
routes the ARR.f message to the AAAC.h (using proxies or not). The AAA core executes routing using
Realm Routing Table (RRT). The AAAC.f then keeps the info related to this message into the list of
pending requests
The response to ARR is AA Registration Reply (ARA). Upon receiving an ARA message from the
AAAC.h, the AAAC.f: checks / processes the AAA Result-Code and then route it back to the Attendant.
After receiving an answer from the AAAC.h the AAAC.f calls the QoS ASM, that communicates with a
QoS broker.
4.5.2.7 AAAC.h
The AAAC.h supports MIP (as developed for the Moby Dick project) with help of ASM (application
specific module)
After receiving an ARR.f message the mobility ASM checks the MN's NAI, MN's Home IP Addr., Home
Ag. Addr. It further checks the authentication of the AVPs record from the MN. Based on this info, it
decides whether it should allow the MN to use mobile-ipv6 or not. It also selects the SA to be used for
authentication.
4.5.2.8 Home Agent-AAA-Enabler
This is a User-space application implementing an AAA-client. Main functions of this entity are that it
enables the AAAC.h to dynamically allocate HAs (load balancing) and enforce mipv6 policies at the HA.
After receiving HOR (Home Agent Request),: the AAA_HA module checks whether it is good or not;
respond with an appropriate Result-Code AVP and create a DH key and send the public part to the MN as
an AVP in the HOA message. This then sends the reply to the requesting AAAC.h server by using the
HOA (Home Agent Answer) message:
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