LDP

simple module

Handles and processes LDP messages.

The LDP protocol is used by one LSR (Label Switched Router) to inform another LSR of the label bindings it has made. The LSR uses this protocol to establish label switched paths through a network by mapping network layer routing information directly to data-link layer switched paths.

Operations

All LDP message types are subclassed from LDPPacket, and include LDPHello, LDPNotify, LDPLabelRequest, LDPIni and LDPAddress.

Message processing in the LDP module is explained in LDP Message Processing

Author: Andras Varga, Vojta Janota

Used in compound modules

Name	Type	Description
LDP_LSR	compound module	An LDP-capable router.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string		The path to the InterfaceTable module
routingTableModule	string
libTableModule	string
tedModule	string
holdTime	double	15s
helloInterval	double	5s
dataTransferMode	string	"bytecount"	TCP data transfer mode

Properties

Name	Value	Description
display	i=block/control

Gates

Name	Direction	Size	Description
tcpIn	input
udpIn	input
tcpOut	output
udpOut	output

Source code

//
// Handles and processes LDP messages.
//
// The LDP protocol is used by one LSR (Label Switched Router) to inform
// another LSR of the label bindings it has made. The LSR uses this protocol
// to establish label switched paths through a network by mapping network layer
// routing information directly to data-link layer switched paths.
//
// Operations
//
// All LDP message types are subclassed from ~LDPPacket, and include
// ~LDPHello, ~LDPNotify, ~LDPLabelRequest, ~LDPIni and ~LDPAddress.
//
// Message processing in the ~LDP module is explained in
// <a href="ldp-processing.html">~LDP Message Processing</a>
//
// @author Andras Varga, Vojta Janota
//
simple LDP
{
    parameters:
        string interfaceTableModule;   // The path to the InterfaceTable module
        string routingTableModule;
        string libTableModule;
        string tedModule;
        double holdTime @unit("s") = default(15s);
        double helloInterval @unit("s") = default(5s);
        string dataTransferMode @enum("bytecount","object","bytestream") = default("bytecount"); // TCP data transfer mode
        @display("i=block/control");
    gates:
        input tcpIn @labels(TCPCommand/up);
        input udpIn @labels(UDPControlInfo/up);
        output tcpOut @labels(TCPCommand/down);
        output udpOut @labels(UDPControlInfo/down);
}

File: src/inet/networklayer/ldp/LDP.ned