Question: In GTP-U Tunnels, how is a Tunnel Endpoint ID (TEID) value typically determined for use in the TEID field for unicast user plane data transmission?
Option 1: Allocated randomly by the receiving Tunnel Endpoint
Option 2: Assigned statically by network configuration
Option 3: Negotiated during GTP-C procedures like Create PDP Context and RAB assignment on the control plane
Option 4: Derived from the IP address of the sending Tunnel Endpoint
Explanation: The correct answer reflects the process where TEID values are negotiated during specific control plane procedures (e.g., GTP-C Create PDP Context and RAB assignment). This negotiation ensures both endpoints agree on the TEID for encapsulating user plane data, facilitating proper multiplexing and demultiplexing.