Feature Description
The SMF uses the NRF Client profile configuration and the NRF failure profile configuration to achieve the NF failover support functionality. The SMF utilizes the failover support for all the NFs such as Charging Function (CHF), Policy Control Function (PCF), Unified Data Management (UDM), and User Plane Function (UPF).
The failure handling support provides the flexibility for the operator to take an action upon a failure, based on the message type and failure status code received.
This chapter describes how the SMF implements the failure handling functionality for CHF, PCF, UDM, and UPF.