I had been looking for something like an Emulator (not simulator) for Cisco IOS. I will have a real IOS image which I can load up into an emulator and work on as if I am on the real Cisco hardware. I am not quite sure if any such software exists or not. Please let me know if there is any. This is for R&D purpose.
Or please let me know if there is any good Simulator which can work good and all commands work for Switch/multilayer Switch and also router.
Thanx in advance.