LAN

Dynamic (Obtain IP Address from a DHCP server)
By selecting 'DHCP Client', the device will act as a DHCP client and obtain its LAN IP settings from the DHCP (Dynamic Host Configuration Protocol) server on the local network. By default, the device is set to obtain an IP address from a DHCP server on your network. If a DHCP server is not available, the device will set an auto-IP address of 169.254.x.x with a subnet mask of 255.255.0.0 and will periodically search for a DHCP server on the network.

Static IP (Assign a Fixed IP Address, Subnet Mask, Gateway IP Address, DNS1 and DNS2)
If necessary, you can assign a static IP address to the device. The IP address of each device on the local area network must be within the same IP address range and subnet mask. For a small subnet with less than 253 IP addresses assigned (e.g. Class C private IP), each device on the LAN (Local Area Network) needs have a unique IP Address in the format of (example) 192.168.0.x to connect to other devices within the same network.

Subnet Mask
Specify the subnet mask for the device.  The Subnet mask must be the same for all devices on the same subnet of the network. The default subnet setting is 255.255.255.0.  For a small subnet with less than 253 IP addresses assigned (e.g. Class C private IP), keep this default setting.

Gateway IP Address
Specify the Gateway IP Address for the device.  The Gateway IP Address is almost always the LAN address of your router.  Most D-Link routers have a default LAN IP address of 192.168.0.1.

DNS1 and DNS2
Specify the first and second DNS Addresses for the device. A DNS Address will allow the device to resolve names into IP addresses. Example: Without a DNS address, the device would not be able to contact an FTP site such as ftp.xxx.com (name). Instead, you would need to use 64.7.210.131 (IP address). It is recommended that you enter DNS addresses when setting a Static IP Address.  Often you can use the LAN IP address of your router as a DNS address.

Click 'Apply' when finished.