D-Link DNR-4020-16P User Manual page 52

Section 3 - Configuration
PoE
On this page you can configure the settings for the NVR's PoE interfaces.
Toggle this to automatically manage PoE settings for PoE-capable
Auto Manage
cameras.
For PoE Camera
Enter the fixed IP address of the NVR. The default IP address is
IP Address
10.10.10.121.
Set this to match the subnet mask of the provided IP address.
Subnet Mask
The default value is 255.255.255.0.
Set this to the default gateway on your router or local subnet
Default
for proper network routing. The default gateway is 10.10.10.1.
Gateway
D-Link DNR-4020-16P User Manual 47