: Does Diameter proxy agent stay in the path during entire user session?

Dear Diameter experts,

I would appreciate your help in the following problem:

For certain functionality, where sesssion state is maintained in a Diameter proxy agent, it may be desirable that a Diameter proxy agent processes all Diameter request-answer exchanges of a given Diameter user session.
Are there any means to enforce that the agent remains in the path during the entire Diameter user session?

For instance, I could imagine that a Diameter client uses request Routeing for the first request, only providing restination realm and application, and includes the destination host directly in later requests, which could mean that a relay agent before the proxy agent chooses another path, bypassing the proxy agent. Or the client could open up a direct Diameter connection to the Destination host.

Also, requests from server to client could take another route than requests from client to server.

I am not aware that Diameter features a mechanism similar to the SIP record-route, that allow a SIP proxy to request remaining in the path for the entire SIP dialogue.

Therefore I suspect the answer in an appropriate configuration of the network, but I am not shure which screws to turn.


Best regards, Th Belling


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Dr. Thomas Belling
Siemens AG           
Sankt-Martin-Str. 76 
D-81541 München Germany
Tel     +49 89 636 75207
Email   Thomas.Belling AT siemens.com