Packet Tracer supplements physical equipment in the classroom by allowing students to create a network with an almost unlimited number of devices, encouraging practice, discovery, and troubleshooting. The simulation based learning environment helps students develop 21st century skills such as decision making, creative and critical thinking, and problem solving.

Packet Tracer complements the Networking Academy curricula, allowing instructors to easily teach and demonstrate complex technical concepts and networking systems design. The software is available free of charge to all Networking Academy instructors, students, and alumni.

HomePage: http://www.cisco.com/web/learning/netacad/course_catalog/PacketTracer.html