But, in those days, this was an amazing breakthrough for engineers around the world. What with all the talk about Network Function Virtualization (NFV) and Software Defined Networks (SDN) and other buzzwords used by the networking industry today. Why not run Cisco networking equipment virtually on your laptop so you can practice anywhere? And why not make it easy to create networks by simply dragging devices into a network topology and linking them with various types of interfaces? While on a boat at sea, Jeremy Grossmann (the creator of GNS3), came up with an amazing idea. He also needed a cool project for his university degree. How would he practice on Cisco labs without physical Cisco equipment? He wanted to practice Cisco Certified Network Professional (CCNP) labs from home, but wasn’t able to. He was facing the same issue all of us faced in those days.
Have you got that kind of money just for labs? A Frenchman and a vacationįortunately, in 2006, a Frenchman Jeremy Grossman was taking a trip to Mayotte island near Madagascar and Southern Africa. Other network engineers have even spent the equivalent of $1 million building huge labs in their basements for practice and testing. Who needed heating? Just get a bunch of Cisco routers and switches to heat the house! Fortunately, I passed my CCIE exam, so it was worth it.īut, what a nightmare it was trying to get hold of equipment to practice for exams in those days. I remember having equipment at my house making lots of noise and generating lots of heat.
In those days, you had to spend lots of money either buying or renting equipment to practice. GNS3 was the 4th hottest skill trending in 2018 on Udemy, the global online learning marketplace with 80,000 online courses, 24+ million learners, and thousands of businesses.īack in the day, when I was studying for my Cisco Certified Internetwork Expert (CCIE certification) lab exam, the only way to practice and complete labs was by using physical equipment. The development of GNS3 virtual network simulator in 2007 was a game changer for network engineers from all corners of the world.
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