@Clive_A They're all on the same subnet. E.g. camera on 192.168.1.221 and NVR on 192.168.1.200. Like I said, they are accessible when connected via a separate PoE switch. It's only when they are...

I cannot connect to my individual cameras firmware page when they are connected to the NVR's internal PoE switch (web browser times out tyring to connect to the cameras firmware page). However I CAN...