What is GTP-U protocol?
The GPRS Tunneling Protocol (GTP) is the tunneling protocol defined by the 3GPP standards to carry General Packet Radio Service (GPRS) within 3G/4G networks. GTP-U— Transports user data within the core GPRS network and between the Radio Access Network (RAN) and the core network. …
What is GTP-U in LTE?
GPRS Tunnelling Protocol (GTP) is a group of IP-based communications protocols used to carry general packet radio service (GPRS) within GSM, UMTS and LTE networks. GTP-U is used for carrying user data within the GPRS core network and between the radio access network and the core network.
Is GTP a TCP or UDP?
GTP’ (GTP prime) is an IP based protocol used within GSM and UMTS networks. It can be used with UDP or TCP. GTP’ uses the same message structure as GTP (GTP-C, GTP-U), but it is largely a separate protocol. GTP’ uses registered UDP/TCP port 3386.
What is GTPv2?
GPRS Tunnelling Protocol version 2. In LTE , GTP (GPRS Tunnelling Protocol) tunnels are used between two nodes communicating over a GTP based interface, to separate traffic into different communication flows. The receiving end side of a GTP tunnel locally assigns the TEID value the transmitting side has to use. …
What is the GTP-U interface?
GTP-U is defined in 3GPP TS 29.281. It encapsulates and routes user plane traffic across multiple signaling interfaces such as S1, S5, and S8. GTP-U messages are either user plane or signaling messages. The registered port number for GTP-U is 2152.
What is GTP echo?
GTP Version Support for Echo Requests and Echo Responses Echo messages are sent to the peer using the GTP version that the peer supports. A broadband gateway configured as a GGSN, P-GW, or GGSN/P-GW supports sending echo replies to GTPv0, GTPv1, and GTPv2 echo requests from a peer SGSN or S-GW.
Which is the user plane of GTP-U protocol?
GTP-U : General Packet Radio System (GPRS) Tunneling Protocol User Plane 1. GTP-U protocol is used over S1-U/S5/X2 interface interface of Evolved Packet System (EPS). 2. GTP-U tunnels are used to carry encapsulated T-DPU and signaling messages 3. It follows the protocol specification : 3GPP TS 29.281
How is GTP-GPRS tunneling protocol used in 5G?
– GPRS Tunneling Protocol (GTP-U) for User Plane: This protocol supports visitors to various PDU sessions (possibly corresponding to unique PDU session types) with the help of user records (i.e between 5G-AN nodes) for N3 is Does, (UPF) inside the backbone network. GTP will face all rejected user PDUs. This corresponds to the PDU session level.
Is the protocol stack the same as GTPv2-C?
The protocol stack is essentially the same as for GTPv2-C with only the name of the layers and the protocols substituted accordingly. The extension header mechanism is kept in place; it allows inserting two elements if necessary. UDP source port of the triggering message (two octets);
What is the TEID of a GTP-U tunnel?
GTP-U Tunnels are used to carry encapsulated T-PDUs and signalling messages between a given pair of GTP-U Tunnel Endpoints. The Tunnel Endpoint ID (TEID) which is present in the GTP header indicates which tunnel a particular T-PDU belongs to.