Question: Which entity initiates both Sx session level reporting and Sx node level reporting procedures in the context of control and user plane separation of EPC nodes?
Option 1: UP (User Plane) function of SGW (Serving Gateway)
Option 2: CP (Control Plane) function
Option 3: UE (User Equipment)
Option 4: TDF (Traffic Detection Function)
Explanation: In the context of EPC node separation, the Control Plane (CP) function initiates both Sx session level and node level reporting procedures. This ensures the CP receives updates from User Plane functions, efficiently managing and monitoring the network. The CP's initiation role highlights its supervisory nature over operational network aspects.