Cisco Switch and Router Simulator

[petejnetwork]

Guys, could anybody recommend a free Cisco switch and router simulator that I can download? I have just tried the trial version of SEMSIM and am really impressed with it. It gives a tutorial along the way, and I may purchase the full version unless there is something better out there. Any suggestions? Pete

 

[lif_andi]

Cisco Packet Tracer. Version 6 is the latest, but 5.3 or 5.3.3 are fine as well, and the differences are not really noticable.

 

[RadiclDreamer]

Packet tracer isnt really "free" but its been posted on ciscos own forums without takedown so i take that to mean they dont mind it too much. Also, GNS3 is a good router sim, but you will need the ios images in order to make it work

 

[Danimal1209]

Packet tracer is way better than GNS3 for CCNA/CCNP stuff.

GNS3 takes a large toll on computer resources as it is running the actual router/switch image.