
QEMU, a generic open source machine emulator, it runs Cisco ASA, PIX and IPS.VirtualBox, runs desktop and server operating systems as well as Juniper JunOS.


This can be a Juniper router, a Huawei router or a Nokia router.Here I am listing all the working versions of Cisco IOS which I have tested with the latest version of GNS3. Beside Cisco, you can also load other vendor images to practice on their router. Like these steps, you can load any other images to GNS3 Simulator. Here, we have learned How to Install Cisco GNS3 IOS images. And then we will click next to finish our installation.Īfter installing Cisco IOS Image, you will be able to see the router details under router option. In the dropdown list, we will select, “ GT96100-FE” here and then click next. In this step, we will select the network adaptor that we will use. You can set a new value or you can click next to use the default one. There will be a default RAM in this step. We can give any name to the router here and then click next. Then, we will change the name of the router. We will select the path where the IOS image is stored on our local PC. In this step, we will select the path of the IOS image to laod it to GNS3. In this window, we will click ”new” to create new router. To do this, we will go Edit/Preferences/IOS routers.

In the second step, we will add IOS router to GNS3. Here, we will use c2691 router image for our example. You can find oen of them and download this image. There are some images that is used for educational purposes on Internet. To use a specific Cisco IOS image, firstly you should find and download it from Internet. Step 4: – Change the name of the router.
