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How to implement tutorials point routing in OMNeT++

To implement the tutorials point routing in OMNeT++, initially we need to clear that the term “”tutorials point routing.” “Tutorials Point” is an online educational platform that provides the tutorials on a wide range of subjects that contains the networking and routing protocols, but it does not state to a particular routing protocol called “Tutorials Point Routing”. In tutorials points we learn the routing protocols like AODV, DSR, OSPF, or any other. In the below we are provide on how to implement the routing protocol in OMNeT++ that we deliberate over a tutorial on that platform.

Step-by-Step Implementation:

Step 1: Set Up OMNeT++ and INET Framework

  1. Install OMNeT++:
    • Make certain OMNeT++ is installed on system. We need to download it from the OMNeT++
  2. Install the INET Framework:
    • Download and install the INET Framework, which offers numerous networking protocols and models. INET can be downloaded from the INET GitHub repository.

Step 2: Create a New OMNeT++ Project

  1. Create the Project:
    • Open OMNeT++ and create a new OMNeT++ project through File > New > OMNeT++ Project.
    • Name project such as RoutingProtocolSimulation and set up the project directory.
  2. Set Up Project Dependencies:
    • Make sure the project references the INET Framework by right-clicking on project in the Project Explorer, navigating to Properties > Project References, and verifying the INET project.

Step 3: Define the Network Topology

  1. Create a NED File:
    • Describe the network topology using the NED language. This topology will contains nodes like routers, hosts that will use the routing protocol to implement.

Example:

network MyNetwork

{

submodules:

router1: Router;

router2: Router;

router3: Router;

router4: Router;

host1: StandardHost;

host2: StandardHost;

connections allowunconnected:

router1.ethg++ <–> Eth10Mbps <–> router2.ethg++;

router2.ethg++ <–> Eth10Mbps <–> router3.ethg++;

router3.ethg++ <–> Eth10Mbps <–> router4.ethg++;

router1.ethg++ <–> Eth10Mbps <–> host1.ethg++;

router4.ethg++ <–> Eth10Mbps <–> host2.ethg++;

}

  1. Configure Network Parameters:
    • Set up necessary link parameters like bandwidth, delay, and packet loss to emulate a realistic network environment.

Step 4: Implement the Routing Protocol

  1. Choose a Protocol to Implement:
    • Choose which routing protocol needs to implement like AODV, OSPF, and DSR. If it’s a protocol we have studied on Tutorials Point, follow the particular logic outlined in the tutorial.
  2. Define the Routing Module:
    • Generate a new module in NED for the routing protocol. This module will manage the routing decisions.

Example (in NED):

simple MyRoutingProtocol

{

parameters:

@display(“i=block/network2”);

gates:

inout lowerLayerIn[];

inout lowerLayerOut[];

}

  1. Implement Routing Logic in C++:
    • To execute the routing logic in C++ according to the protocol’s specifications.

Example (C++ implementation for a simple routing protocol):

#include “inet/common/INETDefs.h”

#include “inet/networklayer/contract/IRoutingTable.h”

#include “inet/networklayer/ipv4/IPv4RoutingTable.h”

class MyRoutingProtocol : public cSimpleModule

{

private:

IRoutingTable *routingTable;

protected:

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

void setupRoutingTable();

};

Define_Module(MyRoutingProtocol);

void MyRoutingProtocol::initialize() {

routingTable = getModuleFromPar<IRoutingTable>(par(“routingTableModule”), this);

// Initialize routing table with custom logic

setupRoutingTable();

}

void MyRoutingProtocol::handleMessage(cMessage *msg) {

// Handle incoming packets and forward them based on the routing table

}

void MyRoutingProtocol::setupRoutingTable() {

// Example logic to set up static routes

IPv4Route *route = new IPv4Route();

route->setDestination(Ipv4Address(“192.168.1.0”));

route->setNetmask(Ipv4Address::ALLONES_ADDRESS);

route->setGateway(Ipv4Address(“192.168.1.1”));

route->setInterface(routingTable->getInterfaceByName(“eth0”));

routingTable->addRoute(route);

}

    • Routing Table: This can be static or dynamic depending on the protocol.
    • Routing Logic: Implement logic for handling packets, updating routing tables, and forwarding packets according to the protocol’s rules.

Step 5: Set Up the Simulation

  1. Configure the Simulation in omnetpp.ini:
    • Set up the simulation parameters, like simulation time, network settings, and traffic patterns.

Example:

network = MyNetwork

sim-time-limit = 100s

**.scalar-recording = true

**.vector-recording = true

# Application traffic configuration

*.host1.numApps = 1

*.host1.app[0].typename = “UdpBasicApp”

*.host1.app[0].destAddress = “host2”

*.host1.app[0].destPort = 5000

*.host1.app[0].messageLength = 1024B

*.host1.app[0].sendInterval = uniform(1s, 2s)

  1. Traffic Configuration:
    • Set up application-level traffic among nodes to make network activity, triggering the routing protocol.

Step 6: Run the Simulation

  1. Compile the Project:
    • Make sure everything is correctly executed and compiled.
  2. Run Simulations:
    • To implement the simulations using OMNeT++’s IDE or command line. Monitor how the routing protocol performs under several conditions.

Step 7: Analyse the Results

  1. Monitor Protocol Behaviour:
    • To assess how the routing protocol manage routing, specifically under numerous network scenarios.
  2. Evaluate Performance:
    • Measure the key performance metrics like packet delivery ratio, end-to-end delay, and routing overhead.
    • Scalars and Vectors: Use OMNeT++ tools to record and asses scalar and vector data, like the number of packets sent, received, and dropped, as well as the time taken to deliver packets.
  3. Check for Issues:
    • Look for issues that include routing loops, packet loss, or excessive delay that may designate issues with the routing logic.

Step 8: Refine and Optimize the Protocol

  1. Address Any Issues:
    • Improve the routing logic based on the simulation outcomes to enhance the performance and address any issues.
  2. Optimize for Performance:
    • Fine-tune parameters such as routing table update intervals, packet forwarding rules, or link cost calculations to optimize the network efficiency.
  3. Re-Test:
    • Run the simulation again with the optimized protocol to check the improvements.

In this page, we understood what is tutorial point routing and we learn tutorial routing protocol like AODV, DSR, OSPF, or any other and also we get knowledge on how to execute the implementation process in the network simulation.  The integration of tutorials point routing within the OMNeT++ framework, along with relevant project topics, can be obtained from our development team. Please provide us with your project specifications, and we will offer further guidance. Our experts are available to assist you in obtaining simulation results. We specialize in various routing protocols, including AODV, DSR, OSPF, and others pertinent to tutorials point routing for your projects.

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