Cisco Switch Simulator
This includes switch simulations for most of the Cisco certifications, and has over 220 switch challenge labs, with as many areas that are possible within a simulator. In fact if there's something that we've missed, just say, and we'll add it. An example is:
Switch challenge Click here - D9. In this demo involves setting up basic details on the Ethernet ports on the switch, and also defining CDP. Each time the challenge is run it gives a new set of challenge parameters. The switch supports both Layer 2 and Layer 3 activities.