Packet Tracer performs simulation for routers, switches and related network devices. This simulation tool is an educational application primarily focussed towards CCNA enthusiasts who want to get hands dirty on Cisco based labs in a virtual environment. This allows ease of usage in terms of addition or deletion of network devices. The user interface of Packet Tracer is pretty user friendly and allows to drag and drop items from item display section to main simulation window. Packet Tracer is a very useful Cisco network simulation tool which allows network administrators and students to experiment with cisco network device behaviour. Cisco Packet Tracer Download & Installation Guide –
