How to Start Transport Layer Projects Using NS3

To start Transport Layer using NS3 which is liable for protocols such as TCP, UDP, and custom transport protocols. Transport Layer manages the end-to-end interaction to make sure reliable or unreliable data delivery, flow control, and congestion control. We follow below given steps to start Transport Layer Projects using NS3.

Steps to Start Transport Layer Projects in NS3

  1. Understand Transport Layer Projects
  • Key Areas to Explore:
    • Reliable vs. Unreliable Transmission: TCP vs. UDP.
    • Congestion Control Algorithms: Reno, Cubic, BBR, and so on.
    • Flow Control: Window-based mechanisms.
    • Performance Metrics: Throughput, latency, jitter and packet loss.
    • Custom Protocols: Execute and experiment the new transport protocols.
  • Applications:
    • Within various network scenarios to measure the performance of TCP/UDP.
    • Focus on the effect of congestion control algorithms.
    • It used to optimize and experiment the custom transport protocols.
  1. Set Up NS3
  1. Install NS3:

sudo apt update

sudo apt install g++ python3 git cmake

git clone https://gitlab.com/nsnam/ns-3-dev.git

cd ns-3-dev

./waf configure

./waf build

  1. Verify Installation:

./waf –run scratch/my-first

  1. Plan Your Transport Layer Project
  1. Choose a Protocol:
    • We can select protocol like TCP, UDP, or a custom protocol.
  2. Define Objectives:
    • These project’s goals are performance evaluation, congestion control, or reliability testing.
  3. Simulation Goals:
    • We need to compute the metrics like throughput, delay, retransmissions, or loss rates.
  1. Example: TCP vs. UDP Performance

Here’s an instance replicates a TCP and UDP connection over the similar network equating its performance.

Code:

#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() {

// Enable logging

LogComponentEnable(“TransportLayerExample”, LOG_LEVEL_INFO);

// Create nodes

NodeContainer nodes;

nodes.Create(2); // Node 0 and Node 1

// Configure point-to-point link

PointToPointHelper pointToPoint;

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

pointToPoint.SetChannelAttribute(“Delay”, StringValue(“5ms”));

NetDeviceContainer devices = pointToPoint.Install(nodes);

// Install Internet stack

InternetStackHelper stack;

stack.Install(nodes);

// Assign IP addresses

Ipv4AddressHelper ipv4;

ipv4.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = ipv4.Assign(devices);

// Create TCP application

uint16_t tcpPort = 8080;

Address tcpAddress(InetSocketAddress(interfaces.GetAddress(1), tcpPort));

PacketSinkHelper tcpSinkHelper(“ns3::TcpSocketFactory”, tcpAddress);

ApplicationContainer tcpSinkApp = tcpSinkHelper.Install(nodes.Get(1));

tcpSinkApp.Start(Seconds(1.0));

tcpSinkApp.Stop(Seconds(10.0));

OnOffHelper tcpClient(“ns3::TcpSocketFactory”, tcpAddress);

tcpClient.SetAttribute(“DataRate”, StringValue(“5Mbps”));

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

ApplicationContainer tcpClientApp = tcpClient.Install(nodes.Get(0));

tcpClientApp.Start(Seconds(2.0));

tcpClientApp.Stop(Seconds(10.0));

// Create UDP application

uint16_t udpPort = 9090;

Address udpAddress(InetSocketAddress(interfaces.GetAddress(1), udpPort));

PacketSinkHelper udpSinkHelper(“ns3::UdpSocketFactory”, udpAddress);

ApplicationContainer udpSinkApp = udpSinkHelper.Install(nodes.Get(1));

udpSinkApp.Start(Seconds(1.0));

udpSinkApp.Stop(Seconds(10.0));

OnOffHelper udpClient(“ns3::UdpSocketFactory”, udpAddress);

udpClient.SetAttribute(“DataRate”, StringValue(“5Mbps”));

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

ApplicationContainer udpClientApp = udpClient.Install(nodes.Get(0));

udpClientApp.Start(Seconds(2.0));

udpClientApp.Stop(Seconds(10.0));

// Run simulation

Simulator::Run();

Simulator::Destroy();

return 0;

}

In this manual, we learnt the simple process with sample coding for Transport Layer Projects, which were initiated and executed with the support of NS3 environment. Upon demands, we will be added extra specifies on this subject.

We focus on both reliable and unreliable data delivery, flow control, and congestion control pertinent to your project. Please send us an email to receive the latest project topics in this field. Enhance your project performance by collaborating with us. To initiate Transport Layer Projects using NS3, our team will provide you with a comprehensive step-by-step guide to ensure timely simulation of your work.