1. Dr. Mohammed Hawa University of Jordan
Network Simulators
Dr. Mohammed Hawa
University of Jordan

2. Simulation of Computer Networks

3. Also Wireless Networks

4. Main Network Simulation Packages
OPNET Modeler (40% of research papers)
Ns-2/Ns-3 (40% of research papers; wireless)
Others are less popular:
OMNeT++
NetSim
GloMoSim
QualNet
CSim

5. OPNET Modeler – Windows/Linux

6. Ns-2/Ns-3 ns: short for Network Simulator. Runs mainly on Linux.
Free and Open Source.
Written in C++ (core) and Python (bindings).
ns-2 was popular (C++ and Otcl) but difficult.
ns-3 will eventually replace ns-2 in most universities that are currently using ns-2.
Contributed models by graduate students.

7. How do I use it? Windows 7 (32 or 64 bit)
Install Cygwin to provide a Unix-like environment and CLI.
Compile ns-3 source code using gcc compiler.

8. Ns-3 Website

9. Easy to Follow Documentation

10. FAQ and Large Support Community