How to Begin Implement Metropolitan Area Networks in ns3

To create a Metropolitan Area Network (MAN) project using NS3 includes the replicate of network spanning in metropolitan area which connects the several Local Area Networks (LANs) or Wide Area Networks (WANs). Like replication can contain the many topologies, routing protocols, and traffic congestion for examine the performance and scalability.

Below is a step-by-step guide:

Steps to Begin Implementing a Metropolitan Area Networks projects using ns3

1. Understand Metropolitan Area Network (MAN) Concepts

• Key Components:
  • Core Routers: Central nodes are interconnecting the sub-networks.
  • Sub-Networks: LANs, WANs, or wireless networks in the metropolitan area.
  • Clients: End-users for assigning the network.
• Use Cases:
  • The Public access the internet in cities.
  • WANs corporate the connecting for several branches.
  • The service networks are government and public.

2. Set Up NS3 Environment

• Download and install NS3.
• Assure the needs for instance Python, C++, and libraries are installed.
• Familiarize by tool NS3 components like PointToPoint, Wi-Fi, Applications, and TrafficControl.

3. Define Project Objectives

• Select a detailed  problem or for replicate the environment:
  • The MAN management for traffic routing.
  • It mitigation the network congestion.
  • Performance for estimation in routing protocols.
  • Service provisioning for different applications such as VoIP or video streaming.

4. Design the MAN Topology

• Core Network:
  • Use the main routers are interconnected via Point-to-Point connection or other backbone methods.
• Sub-Networks:
  • Link the networks for LANs, Wi-Fi hotspots, or WANs for the key routers.
• Clients:
  • Replicate the users for build application-level congestions.

5. Choose the Relevant NS3 Modules

• Point-to-Point Module: The main network links are aimed at the high-speed core network connections.
• Wi-Fi Module: Intended for component the wireless clients.
• Traffic Control Module: Designed for congestion control and queue management.
• Applications Module: For create the congestion design such as web browsing or video streaming.

6. Basic Example Simulation

Here’s a sample of a simple MAN by a main network and two LANs:

#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[]) {

CommandLine cmd;

cmd.Parse(argc, argv);

// Create core router nodes

NodeContainer coreRouters;

coreRouters.Create(2); // Two core routers

// Create LAN nodes

NodeContainer lan1, lan2;

lan1.Create(3); // Three nodes in LAN 1

lan2.Create(3); // Three nodes in LAN 2

// Connect LANs to core routers

PointToPointHelper p2p;

p2p.SetDeviceAttribute(“DataRate”, StringValue(“1Gbps”));

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

// Core network connection

NetDeviceContainer coreDevices = p2p.Install(coreRouters);

// LAN connections

NetDeviceContainer lan1Devices, lan2Devices;

for (uint32_t i = 0; i < lan1.GetN(); ++i) {

lan1Devices.Add(p2p.Install(lan1.Get(i), coreRouters.Get(0)));

}

for (uint32_t i = 0; i < lan2.GetN(); ++i) {

lan2Devices.Add(p2p.Install(lan2.Get(i), coreRouters.Get(1)));

}

// Install Internet stack

InternetStackHelper internet;

internet.Install(coreRouters);

internet.Install(lan1);

internet.Install(lan2);

// Assign IP addresses

Ipv4AddressHelper ipv4;

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

ipv4.Assign(coreDevices);

ipv4.SetBase(“10.1.2.0”, “255.255.255.0”);

ipv4.Assign(lan1Devices);

ipv4.SetBase(“10.1.3.0”, “255.255.255.0”);

ipv4.Assign(lan2Devices);

// Create application traffic

UdpEchoServerHelper echoServer(9);

ApplicationContainer serverApp = echoServer.Install(lan1.Get(0));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

UdpEchoClientHelper echoClient(Ipv4Address(“10.1.2.1”), 9);

echoClient.SetAttribute(“MaxPackets”, UintegerValue(10));

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

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

ApplicationContainer clientApp = echoClient.Install(lan2.Get(0));

clientApp.Start(Seconds(2.0));

clientApp.Stop(Seconds(10.0));

Simulator::Run();

Simulator::Destroy();

return 0;

}

7. Expand the Simulation

• Routing Protocols:
  • Validate the various routing protocols such as OSPF, RIP, or custom protocols.
• Congestion Control:
  • Use the component for Traffic Control has handled the congestion.
• QoS Management:
  • Execute the policies for prioritizing the some kinds of congestion for sample video streaming.
• Realistic Traffic:
  • Replicate the realistic for web browsing, VoIP, and video congestion using applications such as OnOff or BulkSend.

8. Performance Metrics

• Latency: It calculate the delays for packet delivery.
• Throughput: Estimate the percentage of data transmission.
• Packet Loss: Track the reliability below various loads of packet loss.
• Network Utilization: It assigns the effectiveness for use resource.

9. Advanced Features

• Hybrid MAN:
  • It associates the wired and wireless connections.
• SDN Integration:
  • Increase the SDN controller for handle the dynamically network flows.
• Scalability Analysis:
  • The performances are validating the MAN as the amounts of nodes are improved.
• Security:
  • It replicates the secure communication protocols and intrusion detection systems.

In the entire simulation setup, we had delivered the significant projects concepts and techniques that is used to sharing the data, to interact with others and high speed internet without any disturbances that were executed and simulated using the tool of ns3 tool. For inquiries about the project, consult the additional manual we will provide.