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What is session-binding AVP and its use and significance ?

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What is session-binding AVP and its use and significance ?
posted Dec 20, 2014 by Harshita

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1 Answer

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Session binding AVP may be included in diameter AVP answer messages by authorization server. It is used to communicate to client that it is maintaining a session and in case of failure, it should contact to same server for re-authorization.
Session binding AVP is of type Unsinged 32.

answer Dec 20, 2014 by Vikram Singh
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+1 vote

I am not able to understand the significance of this AVP from rfc3588. Can someone please explain in simple word ?

+5 votes

I gone through the RFC4006 but didnt get the context of below paragraph

   Certain applications require multiple credit-control sub-sessions.
   These applications would send messages with a constant Session-Id
   AVP, but with a different CC-Sub-Session-Id AVP.  If several credit
   sub-sessions will be used, all sub-sessions MUST be closed separately
   before the main session is closed so that units per sub-session may
   be reported.  The absence of this AVP implies that no sub-sessions
   are in use.

But here my question is
1. What could be the types of Multiple credit-ontrol Sub-session?
2. How can we include different cc-sub-session-ID for each sub-session, please give me an example with message structure using CCR message.

0 votes

When the credit of a prepaid subscriber is exhausted, as specified in the 3GPP Diameter spec for Gy interface (32.229), the OCS can instruct the PGW to redirect the user traffic to a TopUp server.
It is done by the OCS by setting the value of the Final-Unit-Action AVP to the Redirect value (1) and providing the Redirect-Server AVP in the CCA (Credit Control Answer) Diameter message.
Are we talking about standard HTTP redirection?
Can this traffic redirection work in case of HTTPS user traffic?

+2 votes

What are the encrypted AVPs and significance of these. How encryption is enabled between the two diameter nodes ? Is there any separate message to enable encryption between the nodes ?

+1 vote

As far as I know, PCRF does the Session binding and PCEF responsible for Bearer binding.
Pls explain with examples of practical scenario.

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