is a legacy version of the powerful network simulation software developed by Cisco Systems, specifically designed for students and educators in the Cisco Networking Academy . Released around 2013, it was a pivotal update that introduced support for the CCNA 5.0 curriculum and several major hardware additions.

Since Cisco doesn't host v6.x anymore, some users archive old versions on:

: Ensure you select the executable file (approx. 145MB) rather than the torrent or XML metadata files.