NED File src/corenetwork/gtp/GtpUser.ned

Name	Type	Description
GtpUser	simple module	This module implements a simplified version of the user plane of the GPRS Tunneling Protocol (GTP). On one hand, this module encapsulates incoming IP datagrams into GTP packets and sends them to the tunnel destination endpoint (GTP operates on top of UDP). The destination endpoint is identified by utilizing information from the TrafficFlowFilter module. On the other hand, when this module receives GTP packets from a tunnel source endpoint, it decapsulates the included IP datagram and sends it to the intended destination according to normal IP forwarding. This module is used by all entities that need to communicate within the cellular core network, such as eNodeB, gNodeB, PgwStandard, Upf, and MECHost modules.

Source code

//
//                  Simu5G
//
// Authors: Giovanni Nardini, Giovanni Stea, Antonio Virdis (University of Pisa)
//
// This file is part of a software released under the license included in file
// "license.pdf". Please read LICENSE and README files before using it.
// The above files and the present reference are part of the software itself,
// and cannot be removed from it.
//

package simu5g.corenetwork.gtp;

//
// This module implements a simplified version of the user plane of the GPRS Tunneling
// Protocol (GTP). On one hand, this module encapsulates incoming IP datagrams into GTP
// packets and sends them to the tunnel destination endpoint (GTP operates on top of
// UDP). The destination endpoint is identified by utilizing information from the
// ~TrafficFlowFilter module. On the other hand, when this module receives GTP packets
// from a tunnel source endpoint, it decapsulates the included IP datagram and sends it
// to the intended destination according to normal IP forwarding.
// This module is used by all entities that need to communicate within the cellular core
// network, such as ~eNodeB, ~gNodeB, ~PgwStandard, ~Upf, and ~MECHost modules.
//
simple GtpUser
{
    parameters:
        string binderModule = default("binder");
        string interfaceTableModule;            // path to the InterfaceTable module
        string ipOutInterface = default("");    // optional: manual specification of outgoing interface for received IP
        int localPort = default(31);
        int tunnelPeerPort = default(31);
        string gateway = default("");			// optional

        @display("i=block/tunnel");

    gates:
        output socketOut;
        input socketIn;

        input trafficFlowFilterGate;
        output pppGate;
}