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72 | Chapter 7. Advanced Settings
N750 Wireless Dual Band Gigabit Router WNDR4000 User Manual
LAN Setup Screen Settings
• IP Address. The LAN IP address of the wireless router.
• IP Subnet Mask. The LAN subnet mask of the wireless router. Combined with the IP
address, the IP subnet mask allows a device to know which other addresses are local to
it, and which have to be reached through a gateway or wireless router.
• Use Router as DHCP Server. By default, the wireless router is a Dynamic Host
Configuration Protocol (DHCP) server, allowing it to assign IP, DNS server, and default
gateway addresses to all computers connected to the wireless router’s LAN. The
assigned default gateway address is the LAN address of the wireless router. IP
addresses are assigned to the attached PCs from a pool of addresses specified in this
screen. Each pool address is tested before it is assigned to avoid duplicate addresses on
the LAN.
For most applications, the default DHCP and TCP/IP settings of the wireless router are
satisfactory.
• Reserved IP Addresses Setup. When you specify a reserved IP address for a computer
on the LAN, that computer always receives the same IP address each time it accesses
the wireless router’s DHCP server. Reserved IP addresses should be assigned to servers
that require permanent IP settings.
IP Address Reservation
To reserve an IP address:
1. Select Advanced > LAN Setup and click the Add button.
2. In the IP Address field, type the IP address to assign to the computer or server. Choose an
IP
address from the wireless router’s LAN subnet, such as 192.168.0.x.
3. Type the MAC address of the computer or server.
Tip: If the computer is already on your network, copy its MAC address from
the Attached Devices screen and paste it here.
4. Click Apply to enter the reserved address into the table.
Note: The reserved address is not assigned until the next time the computer
contacts the wireless router’s DHCP server. Reboot the computer or access its
IP configuration to force a DHCP release and renew.
To edit or delete a reserved address entry:
1. Select the radio button next to the reserved address that you want to edit or delete.
2. Click Edit or Delete.