Now, in 2014, GNS3 continues its evolution. ![]() GNS3 would evolve to become one of the most widely used networking simulators available and many a networking student working towards certification would find it an invaluable resource for learning. Over the years projects like Dynamips and Dynagen would provide some limited simulation functionality for Cisco IOS, but in 2007 as part of a university Master’s thesis project, Jeremy Grossman would begin developing GNS3. Needless to say it was very difficult to gain experience working hands-on with the products you were hoping to get familiar with.Ĭertification training, especially on a budget, was something that was very difficult to do on your own. Ebay was available, but the products you were looking at there were quite often from questionable sources and probably not genuine. Back in 2000, when I first got started in this area, there were no companies offering remote rack rentals, there were no good simulators, and there weren’t companies selling refurbished networking products at a deep discount. It was an expensive prospect, and often out of reach for most beginners to invest significant dollars into owning their own lab gear. ![]() It used to be that the only way to get any direct, hands-on experience with any networking gear was to have access to some actual, physical equipment.
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