How to implement proactive protocols in OMNeT++
To implement proactive routing protocols in OMNeT++ has numerous steps that includes to setup the simulation, learn the protocol then generate the module and incorporate it with the INET framework, and validated. The given procedures are help to implement the process using the Destination-Sequenced Distance-Vector (DSDV) protocol as an example of a proactive protocol.
Step-by-Step Implementation:
Step 1: Set Up OMNeT++ and INET Framework
- Install OMNeT++: Download and install the latest version of OMNeT++ from theOMNeT++
- Install INET Framework: Download and install the INET framework from the INET repository.
Step 2: Understand Proactive Protocols
Proactive routing protocols are retaining up-to-date routing information from each node to every other node in the network. Key concepts include:
- Periodic Updates: Regularly updating routing tables with the latest information.
- Full Network View: Each node maintains a complete view of the network topology.
Step 3: Explore Existing Implementations
An INET framework has encompasses numerous execution of routing protocols. Reviewing these implementations can deliver the valuable insights into generating the own proactive routing protocol.
Step 4: Create the Proactive Routing Protocol Module
Define the Module in .ned File
Create a .ned file for the proactive protocol module.
simple ProactiveRouting
{
parameters:
double updateInterval @unit(s) = default(15s);
gates:
input in[];
output out[];
}
Implement the Module in C++
Create the corresponding .cc and .h files.
ProactiveRouting.h
#ifndef __PROACTIVEROUTING_H_
#define __PROACTIVEROUTING_H_
#include <omnetpp.h>
#include “inet/networklayer/contract/IRoutingTable.h”
#include “inet/networklayer/common/L3AddressResolver.h”
#include “inet/networklayer/ipv4/IPv4Datagram.h”
using namespace omnetpp;
using namespace inet;
class ProactiveRouting : public cSimpleModule
{
private:
double updateInterval;
IRoutingTable *routingTable;
cMessage *updateMsg;
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
void sendUpdate();
void processUpdate(cMessage *msg);
public:
ProactiveRouting();
virtual ~ProactiveRouting();
};
#endif
ProactiveRouting.cc
#include “ProactiveRouting.h”
Define_Module(ProactiveRouting);
ProactiveRouting::ProactiveRouting()
{
updateMsg = nullptr;
}
ProactiveRouting::~ProactiveRouting()
{
cancelAndDelete(updateMsg);
}
void ProactiveRouting::initialize()
{
updateInterval = par(“updateInterval”);
routingTable = getModuleFromPar<IRoutingTable>(par(“routingTableModule”), this);
updateMsg = new cMessage(“sendUpdate”);
scheduleAt(simTime() + updateInterval, updateMsg);
}
void ProactiveRouting::handleMessage(cMessage *msg)
{
if (msg == updateMsg)
{
sendUpdate();
scheduleAt(simTime() + updateInterval, updateMsg);
}
else
{
processUpdate(msg);
}
}
void ProactiveRouting::sendUpdate()
{
// Implement the logic to send routing table updates to neighbors
}
void ProactiveRouting::processUpdate(cMessage *msg)
{
// Implement the logic to process received routing table updates
delete msg;
}
Step 5: Integrate with Simulation Model
Incorporate proactive routing protocol module into a network simulation model.
Network Configuration .ned File
network ProactiveNetwork
{
submodules:
host1: StandardHost {
parameters:
@display(“p=100,100”);
routingTableModule = “^.routingTable”;
}
host2: StandardHost {
parameters:
@display(“p=300,100”);
routingTableModule = “^.routingTable”;
}
connections:
host1.pppg++ <–> { @display(“m=100,100”); } <–> host2.pppg++;
}
omnetpp.ini Configuration
network = ProactiveNetwork
*.host1.ipv4Routing = “inet.networklayer.ipv4.IPv4Routing”
*.host2.ipv4Routing = “inet.networklayer.ipv4.IPv4Routing”
*.host1.routingTableModule = “host1.routingTable”
*.host2.routingTableModule = “host2.routingTable”
*.host1.proactiveRouting = “ProactiveRouting”
*.host2.proactiveRouting = “ProactiveRouting”
Step 6: Test and Debug
- Run Simulations: Execute simulations to test the performances of proactive routing protocol module under several network conditions.
- Analyse Results: Validate the correctness and performance of implementation.
- Debugging: Use OMNeT++’s debugging tools to troubleshoot any disputes.
Overall, we provide the brief procedures on how to setup and implement the proactive protocols in OMNeT++ tool using the INET framework and also we deliver simulation results on how the proactive protocol perform in other simulation tool.