On next screen, it will ask you to browse for IOS images. Select server type by choosing “Run this IOS router on my local computer” and hit next.

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Go to IOS routers under Dynamips and click on New button. Once you have downloaded these images, navigate to edit > preferences in your GNS3. Hope, this post helped you to download GNS3 IOS images and to understand other step by step GNS3 tutorials. Following are the list of some of the common GNS3 IOS images that are freely available to download. You can download GNS3 IOS images for the different devices such as router, switch, and PIX and various platforms such as 2900, 3700, and 7200.

We assume you follow the legal license terms. Note: GNS3 IOS images are subject to copyright of the respective vendors. Using GNS3 is not as difficult as people think. If you have not yet worked with GNS3, we would highly recommend you to visit the following links that will guide you how to download and use GNS3. We assume that you have already downloaded and installed the GNS3 simulator on your system. It means, to use any Cisco device in GNS3, you have to install that device’s IOS first.

It only provides a platform to use Cisco IOS but it does not provide any Cisco IOS itself.

Since Cisco IOS is protected by copyright laws, GNS3 does not include any Cisco IOS in the default installation.

Cisco uses proprietary software for its routers and switches. It is used to simulate routers, switches, and other networking devices. Learn how to install, configure and use Cisco IOS files in GNS3 in detail. In this tutorial explains how to install or import Cisco IOS files in GNS3.

Ios switch cisco gns3 download