There are two legal ways to acquire images for GNS3:. Have a SmartNet contract that gives you access to Cisco downloads. Have someone with a SmartNet contract add you to it so you can access Cisco downloadsThere are two grey-area ways to acquire images for GNS3 that are generally acceptable for lab use (but would be frowned upon and possible get you in trouble for commercial use):.
Download GNS3 for free. A graphical network simulator to design and configure virtual networks. GNS3 is a graphical network simulator that allows you to design complex network topologies. You may run simulations or configure devices ranging from simple workstations to powerful Cisco routers. 2.) GNS3, a network emulator lab tool, to study for the CCNP. 3.) GNS3 recommends the following router images: C3640, C3660, C3725, C3745, C7200. I don't necessarily need the hardware, just the images to load into the GNS3 tool, which runs on my laptop in a virtual environment. How do I obtain these required images?
![Gns3 Gns3](/uploads/1/2/5/4/125492776/918127987.png)
Have someone with a SmartNet account download images from Cisco for you. Copy an image from a physical deviceOther than that, due to the rules of this subreddit, you are on your own. I will, however, tell you that many of this sub's members have done none of the above and have easily acquired images for GNS3. Check out this link on how to setup EtherSwitches on GNS3:I ran a 3700 series router IOS as a switch.
That's a solid work around. You have most of the commands and can setup vlans. You cannot run all switching commands, the biggest being port security, but you can run most of them.enough to pass the CCNA.This works because those routers were capable of running switches via an expansion slot. I believe it was built into the IOS as software instead of a microchip in a real switch (ASIC).Here's a good article about it too:.