NCAC: Network Congestion Analyzer and Controller

The stability of the current Internet architecture depends mostly on end-to-end TCP congestion control mechanisms. The Network Congestion Analyzer and Controller (NCAC) is an effort to build a complete user interface application to NS-2 that provides graphical access to most of NS2´s functionalities. Besides, the application provides powerful visual tools for monitoring and displaying network performance metrics calculated by the simulation. The application is developed in Java to benefit from Java´s portability and platform independence. There are three main parts in NCAC: (1) NS-2 interface, (2) network animation and alarm, and (3) graph plotting application. The functionality of each part is discussed.