Feature Description

The SMF utilizes the failover support for all the network functions such as Charging Function (CHF), Policy Control Function (PCF), Unified Data Management (UDM), and User Plane Function (UPF). The failure handling feature provides flexibility for the operator to take action upon failure, based on the message type and failure status code received.

The SMF uses the NRF Client Profile configuration and the NRF Failure Profile configuration to achieve the NF failover functionality.

This chapter describes how the SMF implements the failure handling functionality for CHF, PCF, UDM, and UPF.