The GNS3 Essentials short series that will help you to get GNS3 up and running so that you get networking devices virtualized so that you can simulate a lab environment or a production scenario. You will learn what is required, as well as how to install it for your best use. Using Dynamips images (Cisco IOS) and Cisco VIRL images, you'll see how to add devices to make GNS3 more functional.