Can you please give me a list of the best cisco IOS images for gns3, I downloaded few of them but I have all time some kind of problem, like cannot save configuration, they do not want start and similar, if you can please type here list of the best and the most stable version of them.
I recently joined your website to prepare for my CCNP Route exam. I also downloaded GNS3, but now I want to know the legal way to get Cisco IOS images to run in my GNS3. Appreciate if you can help me with this.
This is a “grey” area…the official statement from Cisco is that you are only allowed to run Cisco IOS on Cisco hardware, not on emulators. They kinda turn a blind eye to GNS3/dynamips though.
I guess the closest thing to make it “legal” is to buy the hardware, grab the IOS image from it and run it in GNS3. There’s only two problems:
Most used hardware is used for labs so there's a big chance it doesn't come up with the original IOS image. Most people download the latest advanced enterprise IOS image they can find and put it on their flashcards.
Not all IOS images work well in GNS3.
Personally I use Cisco’s VIRL nowadays. It’s legal, has support for IOS, L2 IOS, IOS XE/XR and the ASA.
I have a questions that’s been bothering me, how can I toggle through port switches on the Layer 3 switches in GNS3? for example the “switched” ports of Fa1/0 -> Fa1/15. This is killing me lol. I just need to connect fast1/0 to my router1 ans fast1/2 to my router2.
Hmm I’m not exactly sure what you mean Do you mean how you can change the interface numbers? This can be done by changing the slot modules on the router, that’s what affects the port numbers/interfaces.