How to Start Point-to-Point Topology Projects using NS3

To create a Point-to-Point (P2P) topology has includes the two nodes directly linked through a transmission connection. It’s an essential topology frequently utilized in the NS-3 for simple replications or as a building block for further complex networks.

Steps to Start Point-to-Point Topology Projects using NS3

Step 1: Set Up NS-3

  1. Install NS-3:
    • Download NS-3.
    • Track the installation Process.
  2. Verify Installation: Validate the NS-3 with a sample script:

./waf –run scratch/my_first

Step 2: Understand Point-to-Point Topology

  • Point-to-Point Topology:
    • The two nodes are linked by a devoted the transmission connections.
    • Frequently utilized for the replicating wired connections like as Ethernet or optical links.
    • Parameters metrices such as data rate, delay, and error rate could be setting.

Step 3: Set Up the Point-to-Point Topology

  1. Create Two Nodes: Utilized the NodeContainer we describe the two nodes.

NodeContainer nodes;

nodes.Create(2);

  1. Set Up the Point-to-Point Link: Utilized the PointToPointHelper we state the connection properties.

PointToPointHelper p2p;

p2p.SetDeviceAttribute(“DataRate”, StringValue(“10Mbps”));

p2p.SetChannelAttribute(“Delay”, StringValue(“2ms”));

  1. Install NetDevices: Install network devices (NetDevices) on the nodes we utilized the P2P connection.

NetDeviceContainer devices;

devices = p2p.Install(nodes);

  1. Install Internet Stack: Enhance the Internet stack to both nodes.

InternetStackHelper stack;

stack.Install(nodes);

  1. Assign IP Addresses: Allocate the IP addresses we interface on the nodes.

Ipv4AddressHelper address;

address.SetBase(“192.168.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

Step 4: Set Up Applications

  1. Server Application: Install a UDP echo server on one node.

UdpEchoServerHelper echoServer(9); // Port 9

ApplicationContainer serverApp = echoServer.Install(nodes.Get(1));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

  1. Client Application: Install a UDP echo client on the other node.

UdpEchoClientHelper echoClient(interfaces.GetAddress(1), 9);

echoClient.SetAttribute(“MaxPackets”, UintegerValue(5));

echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));

echoClient.SetAttribute(“PacketSize”, UintegerValue(1024));

ApplicationContainer clientApp = echoClient.Install(nodes.Get(0));

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

Step 5: Run and Analyze

  1. Run the Simulation:

Simulator::Run();

Simulator::Destroy();

  1. Enable Packet Capture: Seizure their packets for examine with .pcap files.

p2p.EnablePcapAll(“point_to_point”);

  1. Trace Logs: Enable NS-3 logging for debugging.

export NS_LOG=”UdpEchoClientApplication=level_all|prefix_func”

./waf –run scratch/point_to_point_topology

Example: Minimal NS-3 Script for Point-to-Point Topology

#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”

using namespace ns3;

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

// Create two nodes

NodeContainer nodes;

nodes.Create(2);

// Set up Point-to-Point link

PointToPointHelper p2p;

p2p.SetDeviceAttribute(“DataRate”, StringValue(“10Mbps”));

p2p.SetChannelAttribute(“Delay”, StringValue(“2ms”));

// Install NetDevices on the nodes

NetDeviceContainer devices;

devices = p2p.Install(nodes);

// Install Internet Stack

InternetStackHelper stack;

stack.Install(nodes);

// Assign IP Addresses

Ipv4AddressHelper address;

address.SetBase(“192.168.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = address.Assign(devices);

// Set up UDP Echo Server on Node 1

UdpEchoServerHelper echoServer(9);

ApplicationContainer serverApp = echoServer.Install(nodes.Get(1));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

// Set up UDP Echo Client on Node 0

UdpEchoClientHelper echoClient(interfaces.GetAddress(1), 9);

echoClient.SetAttribute(“MaxPackets”, UintegerValue(5));

echoClient.SetAttribute(“Interval”, TimeValue(Seconds(1.0)));

echoClient.SetAttribute(“PacketSize”, UintegerValue(1024));

ApplicationContainer clientApp = echoClient.Install(nodes.Get(0));

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

// Enable packet capture

p2p.EnablePcapAll(“point_to_point”);

// Run the simulation

Simulator::Run();

Simulator::Destroy();

return 0;

}

Step 6: Compile and Run the Script

  1. Save the script as point_to_point_topology.cc.
  2. We compile and process it:

./waf –run point_to_point_topology

Step 7: Enhance the Simulation

  • Experiment with Traffic Models:
    • Utilized the TCP instead of UDP.
    • Replicate the FTP or HTTP traffic.
  • Analyze Performance:
    • Calculate the throughput, delay, and packet loss.
  • Simulate Failures:
    • Enhance the delays, errors, or link failures we analysis the resilience.
  • Scale the Topology:
    • Improve further nodes and interconnect the different P2P connections.

Next Steps

  • Utilized their NetAnim for visualizing the replication.
  • It mixed the various P2P connections we build a complex topology such as rings, trees, or hybrids.
  • Compared the P2P performance metrices with other topologies such as bus, star.

In conclusion, we have shown the valued identifications for you to know and empathizes the approaches and its simulation about the Point-to-point Topology in the simulation using NS3 simulator tool. If you face any queries, we will clarify the next document.

We specialize in topology tailored to your project requirements and ensure optimal project performance. Please contact us at phdprojects.org to initiate communication. Simply provide us with the details of your project, and we will assist you in selecting the most suitable simulation and Point-to-Point Topology Project topics.