First Time Set Up; Configuring Your Computer For Dhcp - D-Link DSL-300G+ User Manual

First Time Set Up

This chapter will show you how configure the Modem in order to establish the ADSL connection and ultimately
a connection to the Internet. Any management software features that are directly concerned with establishing an
Internet connection using ADSL are explained in the following chapter, Using the Web Configuration Manager.
Make sure your computer's Ethernet port is connected directly to the Modem as described in the previous
chapter. If your computer has more than one Ethernet port, it is recommended that you disable the ports that are
not connected to the Modem before configuring the device in order to avoid any potential for IP settings conflicts
with other equipment.
It may be necessary to change the IP settings on your system in order to access the management software used
for Modem configuration. The Modem uses Dynamic Host Configuration Protocol (DHCP) to automatically
assign an IP address to your computer. Your compute (more precisely your Ethernet port's IP interface) must be
configured to receive IP settings from the Modem. This means that your system must first be configured to
become a DHCP client. Once your computer's IP settings are configured to connect to the Modem, you can
configure the Modem to suit the requirements of your ADSL service. Some users will not need to configure the
device and will simply use the factory default settings for the Internet connection. Even in this case though, it is
necessary that your computer be configured as a DHCP client.
Note: There is a difference between a "local" IP address and a "global" or "universal" IP
address. You must configure your computer to receive its local IP settings from the
Modem. To access the web-based configuration software, you use the local IP address
of the Modem. The global IP address is used to identify your account on the larger
network and ultimately on the Internet. For ADSL connections that use PPPoE, PPPoA
or IPoA connection types, this global IP address information is stored on the Modem
and has no effect on the IP address of your computer. For RFC 1483 Bridge
connections, additionally software may need to be installed on your computer. In this
case, once the Modem has been configured to act as a bridge, the global IP address
information will actually be stored on your computer. When the Modem acts as a bridge
it is said to be invisible, that is, the Modem itself does not have an IP address.

Configuring Your Computer for DHCP

In order to configure your system to receive IP settings from the Modem it must first have the TCP/IP protocol
installed. If you have an Ethernet port on your computer is probably already has TCP/IP protocol installed. If you
are using Windows XP the TCP/IP is enabled by default. Below is an illustrated example of how to configure a
Windows XP system to automatically obtain IP settings form the Modem. Following this example is a step-by-
step description of the procedures used on the other Windows operating systems to first check if the TCP/IP
protocol has been installed, if it is not instruction are provided for installing it. Once the protocol has been
installed you can configure the system to receive IP settings from the Modem.
For computers running non-Windows operating systems, follow the instructions for you OS to allow the system
to receive an IP address from the Modem, that is, configure the system to be a DHCP client.
DSL-300 ADSL Modem User's Guide
6
3