Steps to implement RPL Protocol in ns3

Implementing the RPL (Routing Protocol for Low-Power and Lossy Networks) protocol in ns-3 by using the ns-3 library which provides the RPL helper classes are explained. Here the steps given below will guide the implementation process of RPL protocol in ns3.

Step-by-Step Implementation of RPL protocols in ns3:

Set Up Your Environment

Ensure that ns3 is installed.

Create a New ns-3 Script

Create a new simulation script in the scratch directory of your ns-3 installation. For example, you can create a file named rpl-simulation.cc.

cd ns3.xx

cd scratch

touch rpl-simulation.cc

3. Include Necessary Headers

In the rpl-simulation.cc file, include the necessary headers for your simulation.

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/point-to-point-module.h”

#include “ns3/applications-module.h”

#include “ns3/ipv6-routing-helper.h”

#include “ns3/rpl-helper.h”

#include “ns3/ipv6-static-routing-helper.h”

using namespace ns3;

4. Set Up the Network Topology

Define the network topology. For simplicity, let’s create a basic topology with three nodes connected in a line.

int main (int argc, char *argv[])

{

CommandLine cmd;

cmd.Parse (argc, argv);

NodeContainer nodes;

nodes.Create (3);

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute (“DataRate”, StringValue (“5Mbps”));

pointToPoint.SetChannelAttribute (“Delay”, StringValue (“2ms”));

NetDeviceContainer devices;

devices = pointToPoint.Install (nodes.Get (0), nodes.Get (1));

devices.Add (pointToPoint.Install (nodes.Get (1), nodes.Get (2)));

InternetStackHelper internetv6;

Ipv6ListRoutingHelper listRH;

RplHelper rplRH;

Ipv6StaticRoutingHelper staticRH;

listRH.Add (staticRH, 0);

listRH.Add (rplRH, 10);

internetv6.SetIpv4StackInstall (false);

internetv6.SetRoutingHelper (listRH);

internetv6.Install (nodes);

Ipv6AddressHelper ipv6;

ipv6.SetBase (Ipv6Address (“2001:1::”), Ipv6Prefix (64));

Ipv6InterfaceContainer interfaces = ipv6.Assign (devices.Get (0));

interfaces.Add (ipv6.Assign (devices.Get (1)));

ipv6.SetBase (Ipv6Address (“2001:2::”), Ipv6Prefix (64));

interfaces.Add (ipv6.Assign (devices.Get (2)));

// Make sure the first node creates a DODAG

Ptr<Ipv6StaticRouting> staticRouting = staticRH.GetStaticRouting (nodes.Get (0)->GetObject<Ipv6> ());

staticRouting->SetDefaultRoute (Ipv6Address (“2001:1::1”), 1);

Simulator::Run ();

Simulator::Destroy ();

return 0;

}

5. Configure the RPL Protocol

In this example, the RPL protocol is installed and configured using the RplHelper class. The RplHelper class configures the RPL routing protocol on the nodes.

6. Build and Run the Simulation

After writing your script, you need to build and run it.

./waf build

./waf –run scratch/rpl-simulation

7. Analyze the Results

After running the simulation, you can analyze the results based on your needs. You may want to add logging or tracing to observe the behavior of the RPL protocol.

Example Script

Here’s a complete example script for reference: