Hi guys, after some research with a friend, we can successfully simulate a switch. 1 - Install gns3 ();2 - try to get the c3725-adventerprisek9-mz.124-15.T14 from your sources;

1. This document describes in detail, stable configuration details for GNS3 emulator. This is the configuration that works for me.

Hi Nishant, at this time is not possible to even try to do that. Switches use "Application-Specific Integrated Circuit" (ASIC) hardware architecture which is impossible to emulate in GNS3.

2022年4月13日 · this happens for most part when the image name got changed under /home/gns3/images/qemu . even if you've the same image but the name has changed , the project file contains the name of all images included so if it happens that GNS3 didn't detect the image you better edit the project file with an editor like nano or vi and rename the image with …

Ing_Percy. thanks for your quick reaction. I downloaded the IOS and saved it under GNS3 Folder → open the GNS3 1.2.1 version →edit → preferences →Dynamips(IOS routers) →new →image selection →idlepc →apply →save

Not sure what you are doing, but you can either use gns3 the built in switch, which is very basic and has a limited graphic interface...

I would like to seek expertise advise for laptop spec for installation of gns 3.Let's say, If I will use i7 8th generation CPU and memory 8gb for gns 3, is it enough? or should I upgrade ram to 16gb?

With GNS3 you actually need the IOS's! No need for that with Packet Tracer. The only thing with Packet Tracer is you have to be in Cisco Network Academy to get a legal copy of it!

Hi. I'm a little late to the party but assuming you're using Windows 10 and are using the Microsoft KM-Test Loopback Adapter, you'd need to not only turn off the public portion of your firewall (allowing your console program through the firewall works (in my case solarputty.)) but go into the advanced tab in the properties for the adapter at the same location in the picture.

Thank you Rigo. It is a useful reminder. The thing is that I am also in the same situation, trying to learn for certification purposes but the access to IOS images seems to be challenge, I would have to go through a Cisco Partner,... and I have no idea what the cost might be.