If we are going to use this device only for CCNA exam preparation or to get some hands on experience on Cisco IOS, we can ignore this message. Since GNS3 uses a real Cisco IOS, it also follows the same recommendation and warns us about the outdated IOS.

If selected IOS belongs to an outdated device, wizard may display a warning message.In real life, using an outdated device is not recommended.

If GNS3 asked to decompress the file, select no.

GNS3 supports both type of files compressed and decompressed and by default IOS files are compressed.

Now select the downloaded IOS image file which you want to use for your lab. Select New Image option and click Browse button.Now click the IOS router option it will show you the option to add new IOS router image on right side. Once Preferences popup comes up, select IOS routers from Dyanamips tab. Now, we have to upload the Cisco IOS images to GNS3.

Start GNS3 and Click Edit from top left bar and select Preferences.How to install GNS3 step by step Process. Add Cisco IOS (Dynamips images) to GNS3īefore Importing Cisco IOS images to GNS3, I am asumsing you have already installed GNS3 and if you have not installed GNS3 you can follow below link to install and configure GNS3 step by Step process. Cisco Website (Cisco Access required to download images from cisco website. You can download Cisco IOS (dynamips images) from below links.ġ. We are just indexing the links find on internet for education purpose only. Images provided below are strictly for education purpose and are not hosted on server. We have provided two links – one from Cisco Website if you have the access and encase you do not have the access to Cisco Software you can use external link to download the images. In order run Cisco IOS image in GNS3, first we need to download the images. Download Cisco IOS (Dynamips images) GNS3 If you want to practice Cisco ASA / IOU/ IOL on eve-ng for your certification or knowledge then check below posts. We will explain you step by step process of How to add Cisco IOS (Dyanamips Images) to GNS3. In GNS3 you can import Cisco IOS Router images and practice as much as you want. GNS3 is one of the renown and best network software simulator released in 2008.

Gns3 ios