RADIUS Accounting
Accounting collects and sends subscriber usage and access information used for billing, auditing, and reporting. For example, user identities the start and stop times, performed actions, number of packets, and number of bytes. Accounting enables an operator to analyze the services that the users access and the amount of network resources they consume. Accounting records comprise accounting Attribute Value Pairs (AVPs) and are stored on the accounting server. This accounting information can then be analyzed for network management, client billing, and/or auditing.
The SMF implements the RADIUS Accounting functionality through the use of CLI configuration. For more details on the configuration, see Configuring the RADIUS Client.
If the RADIUS accounting is enabled and server-group is configured within the DNN profile, the SMF sends server-group as AAA group in charging-params in N4 session establishment request. When the SMF sends AAA group which is not present on UPF, then it does not account the traffic for static and predefined rules in RADIUS URR and fails to report. In this scenario, the SMF considers only the dynamic rules traffic for accounting in the RADIUS URR.