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DSL-504 ADSL Router User’s Guide

Default Addressing Example

Host

IP Address Subnet Mask Gateway IP

Router 192.168.0.1 255.255.255.0

Computer #1 192.168.0.2 255.255.255.0 192.168.0.1

Computer #2 192.168.0.3 255.255.255.0 192.168.0.1

Computer #3 192.168.0.4 255.255.255.0 192.168.0.1

Please note that when using the default IP address as in the above example, the

first three numbers in the IP address must always be the same with only the

fourth number changing (for a Class C network). This is because the first three

numbers define the network IP address (all machines must belong to the same IP

network), while the last number denotes the host IP address (each computer

must have a unique address to distinguish it on the network). Also note 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 addresses to your computers 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

If you choose to change the IP address of the Router you will need to access the

device directly via the RS-232 connection using a terminal emulation interface

(such as Microsoft HyperTerminal used in the sample screen captures). Your

terminal parameters will need to be set to:

• VT-100/ANSI compatible

• Terminal keys enabled

• 9,600 baud

• 8 data bits

• No parity

• One stop bit

Connect a standard RS-232 (DB-9 to DB-9) cable to the Router’s RS-232 port on

the rear panel, connect the other end to a PC with a terminal emulation program