"Network Abnormal" & Cameras no longer working

[alastairstevenson]

When I open SADP tool, I can see the NVR device is online but the 3 cameras that I have plugged into the PoE ports do not show (I read somewhere that this is bc the built-in PoE ports are on separate networks).

Yes, that's normal, the cameras on Hikvision NVR PoE ports by default don't show in SADP on the PC connected to the LAN.

Suggestion :
In the NVR web GUI, under Camera Management, note down the IP addresses listed for all the connected cameras, against their channel number.

Connect the PC to an unused NVR PoE port. You don't need to change any PC settings.
Note down the devices and the IP addresses that SADP finds.
Disconnect one camera cable, refresh SADP and see which found device goes away,
Write down the channel number against the device that dropped out in list that you just made.
Repeat for all devices.

Now - compare the channel numbers and IP addresses found on the NVR PoE ports, and the list under Camera Management.
See if they match, post the results here.

 

[kentpointmarina]

Does it matter which port they are plugged into on the PoE?

2 of the camera's IP addresses match on both the configuration page and on SADP, 1 camera has a different IP.

 

[kentpointmarina]

Now - compare the channel numbers and IP addresses found on the NVR PoE ports, and the list under Camera Management.
See if they match, post the results here.
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When I try to change the mismatched IP on SADP I get an error code "Device Rejected:

 

[Javed Barakat]

Greetings, I am late to this thread.

I'm having a similar problem.

Now that I understand I have to set the camera IP to the same as the POE port IP.

Can you explain how do I find the POE port IP?

 

[alastairstevenson]

Can you explain how do I find the POE port IP?

As in the post before yours - in the NVR web GUI look under System |Camera Management menu.