Cisco Packet Tracer 6.1
While earlier versions of Packet Tracer were criticized for lacking "realism" (often ignoring minor syntax errors or missing commands), version 6.1 introduced a higher fidelity simulation mode.
: At least 96 MB (though 256 MB or higher was recommended for large topologies). Storage : 250 MB of free disk space. The Evolution to Packet Tracer 6.1.1 cisco packet tracer 6.1