I'm looking for a good emulation program to practice router and network configurations and commands. I'm in Cisco semester 2 and we've starting configuring routers now but school access isn't always convenient for practice. If I can find a good emulator program it would make remembering all this shit easier. I think there is one on the Cisco site but apparently there are better. Packet Trace was another one suggested to me.
EDIT: Subnetting is fun.
I can subnet in my sleep. As for the sim I like Boson for those.