Computer communication networks have become very popular among the computer professionals of late. In order performance evaluation of a computer network before it is deployed, the necessary parameters need to be evaluated which can be very much achieved using a network simulation software and of all such software packages available today, Qualnet is the most recent and advanced one.
Virtual computer networks can be generated on a computer using this software, necessary parameters can be evaluated by running different networking applications on this virtual network. It is also embedded with graphical tools for demonstration of physical topology of the virtual network and graphical representation of evaluated parameters. This software is marketed by Scalable Network Technologies. This software is very easy to install especially on Ubuntu platform.
The company also extends a good maintenance service to customers. Many educational institutions as well as research centers are currently using this software for education as well as research purposes. I recommend this product to all computer networking professionals.