Good evening Kadman, yes your are correct when using our NVR's with built in POE and using our EL series cameras will add automatically assigning the camera a unique IP address. My recommendation is logging in to each camera and make detailed settings and make sure the DHCP Is not enabled so the cameras IP address dosent change and remember to save. Hope this helps have a great weekend.

Actually I found the opposite was true with the IPOB-EL3MPIR50, however that may be an isolated thing. The camera was on static address out of the box and I needed to use the config tool to change it to DHCP so it would show up on my network. My opinion is that cameras should stay in DHCP mode even if they are to be used on a POE NVR. That way they pick up the NVR IP address and then if for any reason you need to put it back on your network with a POE switch, it'll pick up your network subnet as well. DHCP simply makes the camera accessible no matter where you use it, be it straight on your network, or imported into a non POE NVR from your network, or in a POE NVR . And also, be careful about your camera choices. Using the TP Onvif line of cameras offered here can complicate things a bit more- not quite as plug and play as the EL series cameras.

Yes I stand corrected- if you keep the camera on your network you should absolutely keep the address static once it's assigned. Could having the camera in DHCP on a poe nvr cause a problem? I don't think so?