How it Works
The following capabilities are added as part of this feature:
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The SMF processes the CC-Session-Failover AVP received in the CCA-I and CCA-U from OCS.
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The SMF overrides and stores the latest AVP information in the Diameter session on receiving the CC-Session-Failover AVP.
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Based on the configuration and the CC-Session-Failover AVP information, the SMF service sends a session-failover flag indication in the next subsequent request of CCR-U or CCR-T to the Diameter endpoint.
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If the session-failover CLI is enabled and OCS sends the CC-session-failover AVP, SMF retries the request to the secondary server if provisioned under the failure handling template.
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The failover gets overridden by the server in the response message, and it takes precedence over the SMF service indication flag.