I have a dahua DH-SD1A203T camera that I see on my network and I can configure it. But when I connect it to a my NVR2104HS POE NVR dahua can't find it, and I can't add it manually either.
I don't understand what can happen. If I connect the camera to a POE injector it works and I can see it from a PC directly accessing the IP of the camera. But when I connect it to the DVR, it can't find it. If I connect it to a POE TP-link switch, it can't find it either by accessing the IP of the camera directly.
Is there a difference between the type of POE that an injector offers and the DVR?
Set the switch back to default of 10.1.1.1 and gateway of 10.1.1.1 - reboot NVR
I assume 10.30.6.6 your Router? and you've assigned 10.30.6.45 to the NVR - OK
Leave the camera in DHCP. Unplug it and then plug it back in then reboot the NVR. It will assign the camera an IP of 10.1.1.x
As to the other two cameras, How are they connected to the NVR- via the PoE ports or via a separate switch?
I have just done it. I have put the camera in DHCP. I find it with the POE injector and confgiure it. But when I connect it to the DVR it doesn't see it and I have configured the swith in 10.1.1.1 and gateway 10.1.1.1