The .gns3 file is a JSON-formatted text file that acts as the "blueprint" for your lab.
The file is the main configuration file for a network simulation project within GNS3 (Graphical Network Simulator-3). Phase 3 typically represents the final implementation or optimization stage of a network design. Mastering Phase 3: Finalizing Your GNS3 Project Fase 3 - Projecte.gns3
: Use the "Export Project" feature to bundle the .gns3 file with all associated disk images for sharing or submission. Fase 3 - Projecte.gns3