On the previous article I wrote how to deploy NS3 on Ubuntu 10.10. Now I would like to share how to build and to run your network simulator program into NS3. Development Tools As we know, NS3 support development programming C++ and Python.  There are many C++/Python development tools so you choice a tool you have experiences about development. Getting Started We start to create folder test on NS3 build folder Create file hello-world-ns3.cc and write code below ( this code I copy paste from NS3 sample codes, main-simple.cc) #include <iostream>   #include "ns3/core-module.h" #include "ns3/helper-module.h" #include "ns3/node-module.h" #include "ns3/simulator-module.h"   using namespace ns3;   static void GenerateTraffic (Ptr<Socket> socket, uint32_t size) { std::cout << "at=" << Simulator::Now ().GetSeconds () << "s, tx bytes=" << size << std::endl; socket->Send (Create<Packet> (size)); if (size > 0) { Simulator::Schedule (Seconds (0.5), &GenerateTraffic, socket, size - 50); } else { socket->Close (); } }   static void SocketPrinter (Ptr<Socket> socket) { Ptr<Packet> packet; while (packet = socket->Recv ()) { std::cout << "at=" << Simulator::Now ().GetSeconds () << "s, rx bytes=" << packet->GetSize () << std::endl; } }   static void PrintTraffic (Ptr<Socket> socket) { socket->SetRecvCallback (MakeCallback (&SocketPrinter)); }   void RunSimulation (void) { NodeContainer c; c.Create (1);   InternetStackHelper internet; internet.Install (c);     TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory"); Ptr<Socket> sink = Socket::CreateSocket (c.Get (0), tid); InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 80); sink->Bind (local);   Ptr<Socket> source = Socket::CreateSocket (c.Get (0), tid); InetSocketAddress remote = InetSocketAddress (Ipv4Address::GetLoopback (), 80); source->Connect (remote);   GenerateTraffic (source, 500); PrintTraffic (sink);     Simulator::Run ();   Simulator::Destroy (); }   int main (int argc, char *argv[]) { RunSimulation ();   return 0; } Create wscript file and write this script ## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-   def build(bld): env = bld.env_of_name('default') if not env['ENABLE_EXAMPLES']: return; obj = bld.create_ns3_program('hello-world-ns3', ['core', 'simulator']) obj.source = 'hello-world-ns3.cc'   Create waf file and write this script exec "`dirname "$0"`"/../waf "$@" Compile and Run You can compile and run using ./waf . Make sure you ‘re in test folder and run this script ./waf --run "hello-world-ns3" Sample of output program you can see picture below Done. This is a simple program for NS3. If you have question let me know.

NS3 or Network simulation version 3 is a kind of technology that simulates the network behavior through mathematical modeling and statistical analysis method and then obtains the specific parameters which reflect the characteristics of the network. NS is one of the most famous network simulation software which was developed by LBNL network research group at UC Berkeley in the USA. Now I would like to introduce how to deploy NS3 on Ubuntu Linux 10.10 Prerequisites The following list of packages should be accurate for Ubuntu 10.10 release. requirements for C++ (release) sudo apt-get install gcc g++ python requirements for Python (release) sudo apt-get install gcc g++ python python-dev Mercurial: sudo apt-get install mercurial python bindings: sudo apt-get install bzr Debugging sudo apt-get install gdb valgrind GNU Scientific Library (GSL):   sudo apt-get install gsl-bin libgsl0-dev libgsl0ldbl The Network Simulation Cradle (nsc): sudo apt-get install flex bison To read pcap packet traces: sudo apt-get install tcpdump Sqlite for statistics framework sudo apt-get install sqlite sqlite3 libsqlite3-dev Xml-based version of the config store sudo apt-get install libxml2 libxml2-dev A GTK-based sudo apt-get install libgtk2.0-0 libgtk2.0-dev To experiment with virtual machines and ns-3 sudo apt-get install vtun lxc utils/check-style.py code style check program sudo apt-get install uncrustify Doxygen sudo apt-get install doxygen graphviz imagemagick sudo apt-get install texlive texlive-latex-extra texlive-generic-extra texlive-generic recommended Texinfo sudo apt-get install texinfo dia texlive texlive-latex-extra texlive-extra-utils texlive-generic-recommended texi2html ustavo Carneiro's ns-3-pyviz visualizer sudo apt-get install python-pygraphviz python-kiwi python-pygoocanvas libgoocanvas-dev Installation Now we can start to install NS3. Firstly we download ns-allinone-3.9.tar.bz2 file and put on a specific folder such as repos wget http://www.nsnam.org/releases/ns-allinone-3.9.tar.bz2 Extract ns-allinone-3.9.tar.bz2 tar xjf ns-allinone-3.9.tar.bz2 Change to directory ns-allinone-3.9 and build NS3 ./build.py If success, you can see output messages displayed as below 'build' finished successfully (..) Leaving directory './ns-3.9' ns-3.9 is a folder of NS3 codes and scripts Testing After installation, you can test that your NS3 works or not. Change to directory NS build ( in my case, ns-3.9) and run test script as below ./test.py If success, you can see picture as below Then you can develop NS3 program for simulating .