For more info about GNS3 visit their website and forum. if you want to download the IOS images then you can go through the below-given links. That is 'grey' area in terms of legal issues. By Support J0 Comment GNS3 is one of the most prominent software for performing the networking LABS. Here also comes your license problem however I heard that You can get old router from ebay that image supported by GNS and move it to GNS3 on your PC. In this example, Router1 is the TFTP server and Router2 is the router on that the Cisco IOS software image is copied to. Both routers in this example are Cisco 2500 series routers. You can buy CML from CLN store but make sure you read Documentation before buying.įinally, GNS3 is emulator that runs on real IOS or IOL. To copy the Cisco IOS software image from a router that acts as TFTP server to another router see the procedure steps. įor some more advanced labbing, try CML, Cisco Modeling labs, for free via DevNet Sandbox CML runs on virtual IOS and IOL which run in some of virtual routers like CSR1000v. However, PT is excellent tool to learn and practice networking fundamentals and commands for CCNA exam.

You must use simulators or emulators For CCNA level use free Packet tracer from Cisco Net Academy it does not run on real IOS or virtual IOS It is close to IOS but It does not really behave like real IOS would (some simply features do). Unfortunately there are no student or trial version of images for routers and switches Cisco does not have such program. An important skill for Cisco network engineers to have is the ability to correctly perform an image update/upgrade.

Cisco router images