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GNS3 server to asynchronously manage emulators

Project description

This is the GNS3 server repository.

The GNS3 server manages emulators such as Dynamips, VirtualBox or Qemu/KVM. Clients like the GNS3 GUI controls the server using a JSON-RPC API over Websockets.

You will need the GNS3 GUI (gns3-gui repository) to control the server.

Linux (Debian based)

The following instructions have been tested with Ubuntu and Mint. You must be connected to the Internet in order to install the dependencies.


  • Python 3.3 or above
  • Setuptools
  • PyZMQ library
  • Netifaces library
  • Tornado
  • Jsonschema

The following commands will install some of these dependencies:

sudo apt-get install python3-setuptools
sudo apt-get install python3-zmq
sudo apt-get install python3-netifaces

Finally these commands will install the server as well as the rest of the dependencies:

cd gns3-server-master
sudo python3 install


Please use our all-in-one installer.

Mac OS X

Please use our DMG package for a simple installation.

If you want to test the current git version or contribute to the project.

You can follow this instructions with virtualenwrapper: and homebrew:

brew install python3
mkvirtualenv gns3-server --python=/usr/local/bin/python3.4
python3 install

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