Question: In the context of S6a/S6d interfaces, what roles are defined for the MME/SGSN and HSS respectively, when utilizing Diameter overload control mechanism?
Option 1: MME/SGSN as Reporting Nodes, HSS as Reacting Node
Option 2: MME/SGSN as Reacting Nodes, HSS as Reporting Node
Option 3: Both MME/SGSN and HSS as Peer Nodes
Option 4: MME/SGSN as Load Generators, HSS as Load Regulator
Explanation: According to the recommended application of Diameter overload control, the Mobility Management Entity (MME) or Serving GPRS Support Node (SGSN) behave as reacting nodes, responding to overload control messages. Conversely, the Home Subscriber Server (HSS) acts as a reporting node, initiating and sending overload reports to manage traffic effectively during overload situations, ensuring efficient network resource management and preventing potential overloads.