gns3-server/docs/file_format.rst

GNS3 file formats

The .gns3

It's the topology file of GNS3 this file is a JSON with all the informations about what is inside the topology.

A minimal version:

{
    "name": "untitled",
    "project_id": null,
    "revision": 5,
    "topology": {},
    "type": "topology",
    "version": "2.0.0"
}

The revision is the version of file format:

• 6: GNS3 2.0
• 5: GNS3 2.0 < alpha 4
• 4: GNS3 1.5
• 3: GNS3 1.4
• 2: GNS3 1.3
• 1: GNS3 1.0, 1.1, 1.2 (Not mentionned in the topology file)

And the full JSON schema:

gns3_file.json

The .net

It's topologies made for GNS3 0.8

The .gns3p or .gns3project

It's a zipped version of the .gns3 and all files require for a topology. The images could be included inside but are optionnals.

The zip could be a ZIP64 if the project is too big for standard zip file.

The .gns3a or .gns3appliance

This file contains details on how to import an appliance in GNS3.

A JSON schema is available here: https://github.com/GNS3/gns3-registry/blob/master/schemas/appliance.json

And samples here: https://github.com/GNS3/gns3-registry/tree/master/appliances