User's Manual

Table Of Contents
Wireless-N 300 Modem Router DGN2200 User Manual
Advanced Configuration 6-7
v1.0, November 2009
Configuring DHCP
By default, the wireless-N modem 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 wireless-N modem router’s LAN. The assigned default gateway
address is the LAN address of the 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 router are satisfactory. See the
online document that you can access from “TCP/IP Networking Basics” 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.
Otherwise, leave it selected.
Specify the pool of IP addresses to be assigned by setting the starting IP address and ending IP
address. 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.
The router delivers the following settings to any LAN device that requests DHCP:
An IP address from the range you have defined
Table 6-2. LAN Setup
Setting Description
Device Name This is a friendly name of the router. You can see this
name for the router in Network Explorer on Windows
Vista systems and the Network Explorer on all Windows
systems
IP Address This is the LAN IP address of the wireless-N modem router.
IP Subnet Mask his is the LAN subnet mask of the wireless-N 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 wireless-N modem router
Use Router as DHCP Server See the following section “Configuring DHCP” on page 6-7
Address Reservation See “Configuring Reserved IP Addresses” on page 6-8.