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Diameter: What a Diameter agent does after the reboot of itself for pending answers ?

0 votes

When a Diameter Agent forwards a request to the next-hop, it adds Route-Record AVP to the message before forwarding. And it also stores the request and later uses those the stored request to forward back the answer to originator of the request.
I want to know what a Diameter agent does with the stored request if it reboots ?

posted Jan 21, 2018 by Ganesh

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+2 votes

Please find the description of the problem:
A diameter client and server communicates in the network through Proxy Agent.
Here, I have assumed PCEF is a diameter client and PCRF is a diameter server. Interface between the PCEF and the PCRF is known as Gx.

Does Proxy agent, which sits between PCEF and PCRF, need to support Gx application ?
Does Proxy agent validate presence of any mandatory or optional AVP when it receives a message from a diamter client (PCEF) before forwarding it to diameter server (PCRF) ?

Can someone please provides the detailed behavior of a proxy agent ?

+8 votes

Suppose in S6a interface which is a stateless interface an Engine (translation agent) has been placed in between MME and HSS for routing purpose and to translate the Diameter message in to Radius.

As the client-servers are not maintaining the state so after receiving the answer they will delete the session. But what about the agent who is maintaining the state there? hOW he would be informed that it can delete the session?