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I will detail these below as well where appropriate. Other features like ip routing should be disabled when you’re emulating a switch. Everything in GNS3 is a router in disguise, which means that certain commands – like show vlan – don’t work as expected. With that said, only real hardware will give you the true, unadulterated experience of working with the Cisco IOS. My goal here is to provide you with a clear, concise path toward installing GNS3 and getting your first lab up and running based on my own lessons learned from a lot of Googling, swearing, and hair-pulling.
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If I recall correctly, VTP and STP are two of the feature sets that don’t work properly in Packet Tracer, and those are both important. Not all commands work in Packet Tracer, and some of them are exam topics you need to know.
Download cisco ios images for gns3 1.3 how to#
To be honest, that’s what I used for the CCENT, because when I looked at my options it was either that or GNS3 and the first time I tried to figure out how to get GNS3 working my mind almost exploded. The cheapest, easiest option is to download Cisco Packet Tracer. But how are you going to do that? Purchasing lab equipment costs money, and when you’re just starting out you aren’t going to know the differences between a 2950 or a 3570. Sure, I went at the CCENT with a baseline knowledge of networking gained from the CompTIA Network+ (and some associated concepts from the Security+), but not everything on the exam is listed on the objectives.Ĭase in point: establishing a home lab environment.Īll the objectives tell you that you need to know is how to configure certain specific feature sets, like VLANs on switches. When I began looking at the world of Cisco certifications, I was overwhelmed by the sheer amount of material there was to learn.