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TW100-BRV204 User Guide
18
DHCP
What DHCP Does
A DHCP (Dynamic Host Configuration Protocol)
Server
allocates a valid IP address to a
DHCP
Client
(PC or device) upon request.
The client request is made when the client device starts up (boots).
The DHCP Server provides the
Gateway
and
DNS
addresses to the client, as well as
allocating an IP Address.
The TW100-BRV204 can act as a
DHCP server
.
Windows 95/98/ME and other non-Server versions of Windows will act as a DHCP
client
.
This is the default Windows setting for the TCP/IP network protocol. However, Windows
uses the term
Obtain an IP Address automatically
instead of "DHCP Client".
You must NOT have two (2) or more DHCP Servers on the same LAN segment. (If your
LAN does not have other Routers, this means there must only be one (1) DHCP Server on
your LAN.)
Using the TW100-BRV204 's DHCP Server
This is the default setting. The DHCP Server settings are on the
LAN
screen. On this screen,
you can:
Enable or Disable the TW100-BRV204 's
DHCP Server
function.
Set the range of IP Addresses allocated to PCs by the DHCP Server function.
Using another DHCP Server
You can only use one (1) DHCP Server per LAN segment. If you wish to use another DHCP
Server, rather than the TW100-BRV204 's, the following procedure is required.
1.
Disable the DHCP Server feature in the TW100-BRV204. This setting is on the LAN
screen.
2.
Configure the DHCP Server to provide the TW100-BRV204 's IP Address as the
Default
Gateway
.
To Configure your PCs to use DHCP
This is the default setting for TCP/IP under Windows 95/98/ME.
See
Chapter 4 - Client Configuration
for the procedure to check these settings.
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19
Chapter 4
PC Configuration
This Chapter details the PC Configuration required on the local ("Internal")
LAN.
Overview
For each PC, the following may need to be configured:
TCP/IP network settings
Internet Access configuration
Windows Clients
This section describes how to configure Windows clients for Internet access via the TW100-
BRV204.
The first step is to check the PC's TCP/IP settings.
The TW100-BRV204 uses the TCP/IP network protocol for all functions, so it is essential that
the TCP/IP protocol be installed and configured on each PC.
TCP/IP Settings - Overview
If using the default TW100-BRV204 settings, and the default Windows
TCP/IP settings, no changes need to be made.
By default, the TW100-BRV204 will act as a DHCP Server, automatically providing a
suitable IP Address (and related information) to each PC when the PC boots.
For all non-Server versions of Windows, the default TCP/IP setting is to act as a DHCP
client.
If using a Fixed (specified) IP address, the following changes are re-
quired:
The
Gateway
must be set to the IP address of the TW100-BRV204
The
DNS
should be set to the address provided by your ISP.
4
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TW100-BRV204 User Guide
20
Checking TCP/IP Settings - Windows 9x/ME:
3.
Select
Control Panel - Network
. You should see a screen like the following:
Figure 9: Network Configuration
4.
Select the
TCP/IP
protocol for your network card.
5.
Click on the
Properties
button. You should then see a screen like the following.
Figure 10: IP Address (Win 95)
Ensure your TCP/IP settings are correct, as follows:
Using DHCP
To use DHCP, select the radio button
Obtain an IP Address automatically
. This is the default
Windows setting.
Using this is recommended
. By default, the TW100-BRV204 will act as a
DHCP Server.
Restart your PC to ensure it obtains an IP Address from the TW100-BRV204.
Using "Specify an IP Address"
If your PC is already configured, check with your network administrator before making the
following changes:
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PC Configuration
21
On the
Gateway
tab, enter the TW100-BRV204 's IP address in the
New Gateway
field
and click
Add
, as shown below. Your LAN administrator can advise you of the IP Address
they assigned to the TW100-BRV204.
Figure 11: Gateway Tab (Win 95/98)
On the
DNS Configuration
tab, ensure
Enable DNS
is selected. If the
DNS Server Search
Order
list is empty, enter the DNS address provided by your ISP in the fields beside the
Add
button, then click
Add
.
Figure 12: DNS Tab (Win 95/98)
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TW100-BRV204 User Guide
22
Checking TCP/IP Settings - Windows NT4.0
1.
Select
Control Panel - Network
, and, on the
Protocols
tab, select the TCP/IP protocol, as
shown below.
Figure 13: Windows NT4.0 - TCP/IP
2.
Click the
Properties
button to see a screen like the one below.

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