PFCP Protocol Endpoint with UDP Proxy Bypass
With the UDP proxy mode, all message exchanges for the protocols, such as N4, Sxa, and GTP-U, occur through the UDP proxy. The UDP proxy is responsible for connecting or receiving connections from the UPF. The service or the UPF initiates all node-related or session-related messages, and the responses pass through the UDP proxy. The UDP proxy handles all node-related messages and forwards the messages to the protocol node.
With the outbound UDP proxy bypass mode, the session-related messages flow directly from the protocol to the UPF. The node-related messages continue to take the current path, which is through the UDP proxy to the protocol pod or the node manager.
With the inbound and outbound UDP proxy bypass mode, the service sends the session-related messages directly to UPF through the protocol pod, with UDP proxy bypassed. The protocol also establishes a connection with the UPF as and when the app service initiates a PFCP message toward the UPF.
For more information about UDP Proxy Bypass for PFCP, see UCC 5G SMF Configuration and Administration Guide.