@David-TP Tried a different cable but no change. It could be either satellite that drops out too, so I doubt both cables had an issue. Also, there's no transmission drop from 1000 to 10/100 which...

I've three x50poe units. Main unit in router mode (with Virgin Media in modem mode). Main unit connects to a switch and the other two decos ethernet connected to the switch. All seems ok, network map...