This is pretty complicated to explain but i have to try.
We have had on a few different networks that we manage a device that will take down the network almost entirely. Usually this has been a debit machine and all it takes to fix it is reboot the debit machine but it would be nice if there was a way to detect a device thats causing it so we can take some action.
We also had a computer that took down the network and it was just faulty hardware this took about 2 hours to track down. Soon as we located it and disconnected it from the network then all lan activity started working.
I know this is a shot in the dark but anyone ever experienced this? I have a mikrotik router as main router.