This post describes the step-by-step process to configure GN3 IOS images on a Windows machine.
It is assumed that you have the latest GNS3 software and a couple of IOS images for Cisco routers.
A list of IOS images and the amount of needed RAM is given in the table below. Note that these RAM values are the minimum values that worked with my GNS3 installation.
|IOS image||Platform||Model||Default RAM|
Add an IOS Image to GNS3
In the following steps, we will add a Cisco 7200 IOS image to GNS3 and configure it.
- In the GNS3 menu bar, go to Edit
- Under the Edit menu, click on IOS Images and Hypervisors
- In Preferences, under Dynamips–> IOS routers, click on new:
- Browse to the folder which contains the desired IOS image. Select the desired IOS image and click the Open button (pardon my French keyboard)
- Click Yes to copy the IOS image to the default images directory:
- After you hit the save button, click Next. Then you’ll be taken to the menu for defining the name and the plateform of the IOS
- Choose adequate amount of RAM for the router:
- Continue with the steps until you finish creating an image.
Repeat the same steps for every IOS image you want to have in GNS3.