How to Start DYMO Protocol Projects Using OMNeT++

To start a DYMO (Dynamic MANET On-demand) protocol project in OMNeT++, which a reactive routing protocol is created for Mobile Ad Hoc Networks (MANETs), aiming launching the routes on request. We can follow below steps to get started.

Steps to Start DYMO Protocol Projects in OMNeT++

  1. Understand DYMO Protocol
  • DYMO is a reactive routing protocol, which design routes only if source node required.
  • Crucial operations like:
    • Route Request (RREQ): Propagate by a source node, determining an optimal path.
    • Route Reply (RREP): It returns by the destination or intermediate nodes including an effective route.
    • Route Maintenance: It support to manage the route failures.
  1. Set Up OMNeT++
  • Download and Install OMNeT++:
    • Go to the official site to download the new version of OMNeT++ environment on the system.
    • We follow the installation guidance with example simulations to verify that OMNeT++ tool successfully installed.
  • Install INET Framework:
    • DYMO is executed using INET framework.
    • Copy or download the INET framework using its GitHub repository.
    • We execute and incorporate the INET framework including OMNeT++ configuration.
  1. Create a New OMNeT++ Project
  • Go to OMNeT++ IDE.
  • Make a new project:
    • Select File > New > OMNeT++ Project.
    • Name it to the project like DYMOProtocolSimulation.
  • Link your project to the INET framework:
    • Right-click the project, then choose Properties > Project References, and verify the INET framework.
  1. Configure the Network
  • Utilise a .ned file to describe a MANET topology:
    • Example:

network DYMOSimulationNetwork {

submodules:

node1: AdhocHost {

@display(“p=100,100”);

}

node2: AdhocHost {

@display(“p=300,100”);

}

node3: AdhocHost {

@display(“p=200,300”);

}

connections:

node1.wlanRadio++ <–> node2.wlanRadio++;

node2.wlanRadio++ <–> node3.wlanRadio++;

}

}

  1. Enable DYMO Protocol
  • Set the nodes using DYMO routing protocol by changing its protocol stack.
  • Utilise .ini configuration file, to allow DYMO for nodes:

network = DYMOSimulationNetwork

sim-time-limit = 100s

*.node*.**.routingProtocol = “DYMO”

*.node*.wlan.macType = “AODVMac”

*.node*.mobility.mobilityType = “StationaryMobility”  # Change to a mobility model if needed

  1. Test with Mobility
  • Integrate the mobility to experiment route discovery and maintenance capabilities of DYMO within dynamic environments:
    • Make use of INET’s mobility models within .ini file:

*.node*.mobility.mobilityType = “RandomWaypointMobility”

*.node*.mobility.speed = uniform(5mps, 15mps)

*.node*.mobility.x = uniform(0m, 1000m)

*.node*.mobility.y = uniform(0m, 1000m)

  1. Run and Debug
  • We need to execute the simulation within OMNeT++ environment.
  • Make use of logging and debugging tools:
    • Monitor RREQ and RREP message floods.
    • Verify routing tables to confirm the functionality of DYMO in nodes.
  1. Analyze Performance
  • Estimate the crucial performance parameters such as:
    • Packet delivery ratio (PDR).
    • End-to-end delay.
    • Control message overhead.
  • Transfer data into external OMNeT++’s built-in tools like Python or MATLAB for further analysis.
  1. Extend DYMO Protocol
  • Alter DYMO to match use case or research:
    • Insert the energy-efficient routing mechanisms.
    • Combine QoS-aware routing aspects.
    • Execute the hybrid reactive-proactive routing.
  1. Document and Present
  • It offers detailed insights of simulation configuration, outcomes, and observations.
  • Make visuals like graphs for performance parameters equating the DYMO including other routing protocols such as AODV, DSR, or OLSR.

Resources

  • INET Framework Documentation: INET Framework
  • DYMO Protocol Specification: Utilise RFC 4728 for in-depth protocol design.
  • OMNeT++ Tutorials: For OMNeT++ and INET, confirm the official tutorials.

We have completed simulation for DYMO Protocol projects using a structured stepwise approach using OMNeT++ environment. We plan to share more innovative insights and ideas about this project in the future.

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