GNS3 is a graphical network simulator that allows you to design complex network topologies.... without the need for hardware.



You may run simulations or configure devices ranging from simple workstations to powerful Cisco routers. Cisco, Juniper, HP, Arista, Citrix, Brocade - networks aren't vendor specific, so your network simulator shouldn’t be either! Integrate a wide variety of networking systems and gain access to a growing list of freely available virtual networking appliances.

Eliminate expensive physical hardware by switching to a GNS3 virtual lab. Already have a lab? No problem, GNS3 can connect to any real network to leverage your existing hardware and expand your current lab.

Your Virtual Network in a Suitcase
Build, Design and Test your network in a risk-free virtual environment... and access the largest networking community to help.

Get in Front of Who Matters... Network Pros
The best bang for your marketing buck with a concentrated group of over 2 million network professionals who come to the GNS3 community to connect each and every day.

Download and watch the video @ http://www.majorgeeks.com/files/details/gns3.html