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IOS image support different packages like routing, switching and inter-networking etc. IOS image is software or Operating System used in most Cisco routers and switches.

The archive upload-sw privileged EXEC command builds an image file on the server by uploading these files in order: info, the Cisco IOS image, and the web management files.

/ directory / image-name1.tar / directory / image-name2.tar image-name3.tar image-name4.tar-The directory (optional) and the images to download.

GNS3 is unable to provide IOS images for your labs.Ĭisco does not support you using IOS images on non-Cisco hardware and you may run into bugs emulating Cisco hardware. You will need access to either physical hardware or have a Cisco support contract to get an IOS image. You can copy a supported IOS image from a physical network device and use it with GNS3. It emulates older Cisco hardware such as 3725 routers and uses actual Cisco IOS images. R+Svms are all vendor Routing and Switching images that are larger in size but can be imported into GNS3 for real world network emulationĭynamips: Dynamips is the technology leveraged by GNS3 since inception and emulates Cisco routers and basic switching using the Etherswitch module. – IOS images are lower in cpu and memory so you can fit more of them in one topology. – IOS images are usually run in Dynamips however R+Svms are housed in a virtual machine. What are the differences? Here are the major differences: These are classified as Routing and Switching virtual machines (or R+Svms) for short. In the new GNS3 1.4, there is a way to run a second category of switches and routers. For older images, we use and maintain Dynamips an emulator dedicated to emulate some Cisco hardware. GNS3 offers multiple ways to emulate IOS. This video discusses creating Cisco networks in GNS3. This is one of multiple videos showing you how to install the GNS3 Windows GUI on a Windows 10 PC.

In this video I show you how to create a basic Cisco network using Cisco Dynamips routers.