Openbsd /

Gns3

GNS3 is a network simulator, it can be used to emulate network devices, servers, clients and various other networking related setups.

it's has a server and client. while both can be made to work on OpenBSD, server is not of much use, due to lack of docker and qemu+kvm. thus, this guide only covers client side.

Installation

First install the requirement packages:

$ doas pkg_add python3 py3-pip py3-qt5

then run the following command to make a virtual environment:

$ python3 -m venv --system-site-packages gns3

the --system-site-packages flag is required, since we make use of local PyQt (py3-qt5 package).

finally, activate the virtual environment and install gns3-gui package via pip:

$ . gns3/bin/activate
(gns3) $ pip install gns3-gui

you may run gns3 command afterwards:

(gns3) $ gns3