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LAN Settings

The LAN Setup screen allows configuration of LAN IP services such as DHCP and RIP. Select LAN Setup under Advanced in the main menu.

The modem router is shipped preconfigured to use private IP addresses on the LAN side, and to act as a DHCP server. The modem router default LAN IP configuration is:

These addresses are part of the Internet Engineering Task Force (IETF)-designated private address range for use in private networks, and should be suitable in most applications. If your network has a requirement to use a different IP addressing scheme, you can make those changes in this screen.

To view or change the LAN Setup:

Warning: If you change the LAN IP address of the modem router while connected through the browser, you will be disconnected and so will others connected to the router. To connect to the router, you must open a new connection to the new IP address and log in again. Others using the router must restart their computers to connect to the router again.


  1. Select LAN Setup to display the LAN Setup screen:

    Figure 5-2

  2. Change the settings. For more information, see Table 5-2., DHCP Settings, or Reserved IP Addresses.
  3. Click Apply to save the changes.

The LAN TCP/IP Setup parameters are explained in the following table.

Table 5-2. LAN Setup 
LAN Setup
IP Address
The LAN IP address of the modem router.
IP Subnet Mask
The LAN subnet mask of the modem router. Combined with the IP address, the IP subnet mask allows a device to know which other addresses are local to it, and which must be reached through a gateway or modem router.
LAN Setup (continued)
RIP Direction
Router Information Protocol (RIP) allows a modem router to exchange routing information with other routers. This setting controls how the modem router sends and receives RIP packets. Both is the default.
Both or Out Only. The modem router broadcasts its routing table periodically.
Both or In Only. The modem router incorporates the RIP information that it receives.
None. The modem router does not send any RIP packets and ignores any RIP packets received.
RIP Version
This controls the format and the broadcasting method of the RIP packets that the modem router sends. It recognizes both formats when receiving. By default, this is RIP-1.
RIP-1 is universally supported. It is adequate for most networks, unless you have an unusual network setup.
RIP-2 carries more information. Both RIP-2B and RIP-2M send the routing data in RIP-2 format. RIP-2B uses subnet broadcasting. RIP-2M uses multicasting.
Access Router Management Interface on additional port
When NAT is disabled, the modem router's management interface may be accessed at the modem router's LAN address using the port number you enter. This feature is not available when NAT is enabled.
DHCP Server.
For more information, see DHCP Settings.
Use Router as a DHCP Server
This check box is usually selected so that the modem router functions as a Dynamic Host Configuration Protocol (DHCP) server. See DHCP Settings.
Starting IP Address
Specify the start of the range for the pool of IP addresses in the same subnet as the modem router.
Ending IP Address
Specify the end of the range for the pool of IP addresses in the same subnet as the modem router.
Address Reservation.
For more information, see Reserved IP Addresses.
When you specify a reserved IP address for a computer on the LAN, that computer receives the same IP address each time it access the router's DHCP server. Assign reserved IP addresses to servers that require permanent IP settings.

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