I remember that Cisco has software that allows you create virtual network setups, which is great for testing ideas and learning. However I can not remember the name of the software for life of me. Can anyone point me in the correct direction? Thanks in advance, and sorry for the my horrible memory :S
Just so you know packet tracer is just a network emulator and while its quite good for learning concepts if you want to virtualise a network you will need to use a program called GNS3 (www.gns3.net). This software creates Virtual Machines that actually run IOS images virtually so you will can see the realistic interaction between devices. Packet tracer is just an emulator but still works well for basic stuff.