50 | Chapter 5: Advanced
Mobile Broadband Wireless-N Router MBRN3000
DHCP Settings
By default, the router functions as a Dynamic Host Configuration Protocol (DHCP) server,
allowing it to assign IP, DNS server, and default gateway addresses to all computers
connected to the router’s LAN. The assigned default gateway address is the LAN address of
the router. IP addresses is 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 router are satisfactory.
See the online document listed in "Internet Networking and TCP/IP Addressing: " in
Appendix B for an explanation of DHCP and information about how to assign IP addresses
for your network.

Use Router as DHCP Server

If another device on your network will be the DHCP server, or if you will manually configure
the network settings of all of your computers, clear the Use Router as DHCP Server check
box on the LAN IP Setup screen. Otherwise, leave it selected.
Specify the pool of IP addresses to be assigned by filling in the Starting IP Address and
Ending IP Address fields. These addresses should be part of the same IP address subnet
as the router’s LAN IP address. Using the default addressing scheme, you should define a
range between 192.168.0.2 and 192.168.0.254, although you might want to save part of the
range for devices with fixed addresses.
Table 10. LAN IP Setup
Settings Description
Device Name
LAN TCP/IP
Setup
IP Address The LAN IP address of the router.
IP Subnet Mask The LAN subnet mask of the 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
router.
DHCP Server
For more
information, see
“DHCP
Settings” on
page 50.
Use Router as a DHCP
Server
This check box is usually selected so that the router functions as a
Dynamic Host Configuration Protocol (DHCP) server. See “DHCP
Settings” on page 50.
Starting IP Address Specify the start of the range for the pool of IP addresses in the same
subnet as the router.
Ending IP Address Specify the end of the range for the pool of IP addresses in the same
subnet as the router.
Address Reservation
For more information, see “DHCP Settings”
on page 50.
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.