D-Link DSL-502T User Manual download pdf (Page 80)

DSL-502T ADSL Router User’s Guide

address (each computer must have a unique address to distinguish it on the network). The IP address scheme

used in Example #1 can be used for any LAN that requires up to 253 separate IP addresses (excluding the

Router). Notice that the subnet mask is the same for all machines and the default gateway address is the LAN IP

address of the Router.

It is a good idea to make a note of each device’s IP address for reference during troubleshooting or when adding

new stations or devices.

Using DHCP

The second way to use the default settings is to allow the Router to automatically assign IP settings for

workstation using DHCP. To do this, simply make sure your computers’ IP addresses are set to 0.0.0.0 (under

Windows, choose the option Obtain an IP address automatically in the TCP/IP network component described

above). When the computers are restarted, their IP settings will automatically be assigned by the Router. The

Router is set by default to use DHCP. See the discussion in Chapter 5 for information on how to use configure

the Router for DHCP.

Changing the IP Address of the Router

When planning your LAN IP address setup, you may use any scheme allowed by rules that govern IP

assignment. It may be more convenient or easier to remember an IP scheme that use a different address for the

Router. Or you may be installing the Router on a network that has already established the IP settings. Changing

the IP address is a simple matter and can be done using the web manager. If you are incorporating the Router

into a LAN with an existing IP structure, be sure to disable the DHCP function. Also, consider the effects of the

NAT function - which is enable by default.

An IP addressing scheme commonly used for Ethernet LANs establishes 10.0.0.1 as the base address for the

network. Using Example #2 below, the Router is assigned the base address 10.0.0.1 and the remaining addresses

are assigned manually or using DHCP.

Alternative IP Assignment

Host IP Address Subnet Mask Gateway IP

Router

10.0.0.1 255.255.255.0

Computer #1

10.0.0.2 255.255.255.0 10.0.0.1

Computer #2

10.0.0.3 255.255.255.0 10.0.0.1

Computer #3

10.0.0.4 255.255.255.0 10.0.0.1

IP Setup - Example #2

These two examples are only examples you can use to help you get started. If you are interested in more

advanced information on how to use IP addressing on a LAN there are numerous resources freely available on

the Internet. There are also many books and chapters of books on the subject of IP address assignment, IP

networking and the TCP/IP protocol suite.

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D-Link DSL-502T User Manual Page 80