I would like to do this task : detect any unplugged cables/devices across the network. For examples : at time t, detect every connected device across the network. At time t+x, detect every connected device across the network and do the difference with the previous result. It should give me the devices that got unplugged.
The reason being, I have to deal with an existing network with 0 documentation and would like to map ethernet cables to the ethernet wall plugs' physical locations.