Suddenly, a realization hit him like a broadcast storm. The veterans on the forums pointed toward a different path: .
If you are using the modern GNS3 client (version 2.2+), you can check the . cisco 2960 switch ios download for gns3
If you prefer practicing on the real thing, the Cisco Catalyst 2960 series is widely available through various retailers: Where do I get IOS images? - GNS3 Documentation Suddenly, a realization hit him like a broadcast storm