NetSim is an educational network simulator and provides educators with a comprehensive and effective means of teaching computer networks. The software provides for network simulation across various protocols like Ethernet, Wireless LAN. TCP / IP, ATM and devices like routers, ATM switches. NetSim also includes programming exercises using C/C++/Java. NetSim is currently being used in over 75 institutions for under graduate teaching and network lab experimentation.
||Free to try
Windows Server 2008,