This options enables TEID hashing on Layer 3 interfaces. The hash algorithm identifies GTP-C or GTP-U by looking at the UDP destination port (2123 or 2152) of an IP packet to be hashed. If the value of the port matches, the packet is assumed to be GTP-U/C. For GTPv1 packets TEID value from the expected header location is then included in hash. For GTPv2 packets the TEID flag value in the expected header is additionally checked to verify whether TEID is present. If TEID is present, it is included in hash algorithm inputs. TEID is used in addition to GTP tunnel IP hash inputs: SA/DA and SPort/DPort (if Layer 4 load balancing is enabled). If a non-GTP packet is received on the GTP UDP ports above, the packets are hashed as GTP.