RADIUS Interaction for Accounting

The SMF exchanges the following messages with RADIUS server through the RADIUS-client RADIUS-EP.

  • Accounting-Request: This message carries any of the following packets to relay the accounting information to the RADIUS server.

    • Accounting Start packet: This packet describes the type of service being delivered and the user it is being delivered to.

      The SMF sends accounting-start packet during the session establishment procedure. The RADIUS Accounting server returns an acknowledgement upon receiving the accounting-start packet.

      For details on configuring the RADIUS Accounting, see Configuring the RADIUS Client section.

    • Accounting Stop packet: This packet describes the type of service that was delivered and optionally statistics such as elapsed time, input and output octets, or input and output packets.

      At the end of service delivery, the SMF sends the accounting-stop packet for all session deletion scenarios and when the RADIUS accounting is enabled during the call setup.

    • Accounting-Request Interim-Update: During the session, the SMF sends the updated cumulative usage report to the RADIUS accounting server.

  • Accounting-Response: For each successfully processed accounting request, the RADIUS server returns an accounting acknowledgment confirming the receipt of the information.

For CLI details associated with accounting, see the Configuring the RADIUS Client section.