I am doing some lab exercise in GNS3. Therefore I need IOS for the 2800 series routers and 2960/3560 switches. I also need the IOS for Cisco 1921-SEC/K9 Router. Does anyone know where to get those? I tried to register on Cisco's website and download the IOS for the 2800 series router, but got an error messages that goes like this:
"Service Contract Required: To Download this software, you must have a valid service contract associated to your Cisco.com profile."