NS3 Tutorial

Quick Intro About Ns3 Network simulator: – [Ns3 Tutorial]

• Ns3 uses the waf build system
• It’s simulation programs are C++ executable or python scripts
• Developed after the network simulator 2 tool

Features of NS3 Network Simulator [ Ns3 Tutorial]

• Can be connected to a real network
• It’s a discrete event simulator
• Tracing facility for getting output.
• Build using C++ and also python binding is available.

List of modules in NS3 Network simulator [NS3 Tutorial]:

• Flow-monitor internet
• Aodv applications bridge click
• Lte mesh mobility mpi
• Config-store core csma
• Netanim network

csma-layout dsdv Emu energy

Basics of NS3 Network Simulator [NS3 Tutorial]

• It’s a network simulator
• Ns-3 was written using the C++ languages
• Binding in python language
• This is developed for network research and education

Characteristics of ns3:

• Live visualize
• Direct code execution
• Logging facility for debugging
• Modular design/Open source

Actively developed
Sample code for udpechoclient application of ns3:
UdpEchoClientHelper echoClient (csmaInterfaces.GetAddress (nCsma), 9);
echoClient.SetAttribute (“MaxPackets”, UintegerValue (1));
echoClient.SetAttribute (“Interval”, TimeValue (Seconds (1.0)));
echoClient.SetAttribute (“PacketSize”, UintegerValue (1024));
ApplicationContainer clientApps = echoClient.Install (p2pNodes.Get (0));
clientApps.Start (Seconds (2.0));
clientApps.Stop (Seconds (10.0));

Procedures to writing script in ns3:

• Including necessary files
• Use appropriate name space
• Set simulation time resolution
• Enable logging for different modules
• Creating codes
• Create net devices with MAC and PHY
• Attach Net devices to nodes and set interconnections
• Install protocol stack in nodes
• Set network address for interfaces
• Setup routing
• Install applications in nodes
• Setup tracing
• Set application start and stop time
• Set simulation start time
• Run simulation
• Release resources at end of simulation