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You may need to make some changes to the configuration of your computers in
order to communicate with the Gateway. 

DSL Users with PPPoE Client Software

If you have PPPoE client software installed on your
computer, you will need to disable it. To do this:

1.

From the Windows 

Start

menu, select 

Settings

> Control Panel

.

2.

Double click on 

Internet Options

.

3.

Select the 

Connections

Tab. A screen similar to

Figure 1 should be displayed.

4.

Select the 

Never Dial a Connection

option and

click 

OK.

You may wish to remove the PPPoE client software
from your computer to free resources, as it is not 
required for use with the Gateway.

Obtaining an IP Address automatically

Follow the instructions below for your particular operating system to ensure that
your computers are configured to obtain an IP address automatically.

For computers using

Windows 2000.

1.

From the Windows 

Start 

Menu, select 

Settings >

Control Panel

.

2.

Double click on 

Network and Dial-Up connections

3.

Double click on 

Local Area Connection

.

4.

Click on 

Properties

.

5.

A screen similar to Figure 2 should be displayed.
Select 

Internet Protocol TCP/IP

and click on 

Properties

.

6.

Ensure that the options 

Obtain an IP Address 

automatically

, and 

Obtain DNS servers automatically

are both selected as shown in Figure 3. Click 

OK

.

7.

Restart your computer.

For computers using

Windows 95, 98 and ME.

1.

From the Windows 

Start

Menu, select 

Settings > Control Panel

.

2.

Double click on 

Network

. Select the 

TCP/IP

item for your network card as

shown in Figure 4 and click on 

Properties

.

3.

In the TCP/IP dialog, select the 

IP Address

tab, and ensure that 

Obtain IP

address automatically

is selected as shown in Figure 5. Click 

OK

.

4.

Restart your computer.

For computers using 

Windows XP.

1.

From the Windows 

Start

menu, select 

Control Panel

2.

Click on 

Network and Internet Connections

3.

Click on the 

Network Connections

icon

4.

Double click on 

LAN or High Speed Connection

icon. A screen titled 

Local

Area Connection Status

will appear

5.

Select 

Internet Protocol TCP/IP

and click on 

Properties

.

6.

Ensure that the options 

Obtain an IP Address automatically

, and 

Obtain

DNS servers automatically

are both selected as shown in Figure 3. Click 

OK

.

7.

Restart your computer.

If you are experiencing difficulties with your installation, try the following:

• 

Ensure all networking equipment is switched on.

The Gateway

should be showing a green Power LED. If it is not, check the power
adapter connection. Do not use any power adapter with your Gateway
other than the one supplied.

• 

Ensure the Cable/DSL Modem is connected.

The Gateway should be

displaying a green or yellow Cable/DSL Status LED. If no LED is displayed,
check that your modem is switched on and that it is connected to the
Cable/DSL port with an Ethernet cable.

• 

Ensure that the computer is connected to the Gateway.

The Gateway

should be displaying a green or yellow LAN Status LED. If it is not, check
that the computer is connected to one of the Gateway's LAN ports with
an Ethernet cable.

• 

Ensure your computer is configured correctly.

Make sure that the

computer obtains an IP address automatically. See Section 2 for details.
Ensure that the NIC card is configured for autonegotiation.

• 

Ensure that you do not have a web proxy enabled on your

computer. 

Go to the 

Control Panel

and click on 

Internet Options

. Select

the 

Connections

tab and click on the 

LAN Settings

button at the bottom.

Make sure that the 

Use Proxy Server

option is unchecked.

• 

If you are unable to access the Gateway's Web interface. 

Launch a

web browser and enter 

http://192.168.1.1

. If you chose a different IP

address, use that instead. Ensure that you include the 

http://

prefix.

• 

If you cannot remember the Gateway IP address

. Run the Gateway

Discovery application from a wired computer. The application can be
found on the CD-ROM. This will always connect you to the Gateway.

For further Problem Solving and Technical Support information, 
refer to the Gateway User Guide

Cable Internet Connections. 

• Some Cable providers authenticate to the user’s computer MAC address.

If this is required, go to 

Internet Settings

Advanced

and select 

Clone

the MAC Address

. This will copy the MAC address of your computer

onto the Internet port of the Gateway. 

• Some Cable providers authenticate to the user’s Host Name. If this is

required, go to 

Internet Settings

and enter the host name of your

computer into the 

Host Name

field.

DSL Internet Connections.

• If you have an existing DSL line and have PPPoE client software installed

on your computer, you will need to disable it. See section 2.

• If your DSL line is using PPPoE, go to 

Internet Settings

and ensure that PPPoE

is enabled. Check that your PPPoE User name and Password are correct

• Some DSL providers require the use of a PPPoE Service Name. If this is

required, go to 

Internet Settings

and enter the PPPoE Service Name in

the field provided. If it is not required, you must leave it blank.

Wireless Configuration. If you are unable to access the wireless LAN:

• Ensure that the wireless client is set to infrastructure mode.

• If you have a wired and wireless NIC in the same computer, ensure that

the wired NIC is disabled. See section 4 for details.

• Ensure that the Service Area Name /SSID is the same for the wireless

client and the Gateway. 

• Ensure that the Gateway WLAN LED is on. If not, go to the Wireless

Settings menu and enable Wireless Networking.

• Ensure that WEP (Wired Equivalent Privacy) is the same for the wireless

client and the Gateway. If there are problems, turn WEP off in the client
and the Gateway until you have established a wireless connection. 

Running the Configuration Wizard

1.

If you haven’t already done so, restart your computer. 

Note: 

3Com recommends that the Gateway is configured from a wired

Ethernet computer during the initial set-up.

2.

Launch your web browser and attempt to contact the Gateway by
typing the following URL in the location bar: 

http://192.168.1.1

If you can access the Login page, then your computer has correctly
received an IP address from the Gateway.

3.

Login using the default password 

admin

. The Wizard will attempt to

launch automatically, but if it fails, select the 

Wizard

tab and click on

the 

Wizard

... button.

4.

Where possible, the Wizard will recommend settings for most
parameters. However, there are some settings which you must provide.
Most of these will have been provided to you by your ISP when you set
the account up. Refer to section 1 for details.

5.

By default, 3Com recommends that you leave the LAN IP address for
the Gateway as 192.168.1.1. However, if you should choose to change
it, make a note of the new address :

6.

When the DHCP Server Settings page is displayed, make sure that the

Enable the DHCP Server with the following settings

option is selected.

Connecting to the Internet

When the Wizard has completed, attempt to browse to an Internet web site,
such as 

www.3com.com

. If you can successfully access this site, then your

computer, Gateway and Cable/DSL modem have been correctly configured.

Refer to the Problem Solving section if you cannot make contact with the
Gateway or the Internet.

3

CONFIGURING YOUR GATEWAY 

PROBLEM SOLVING   

Gateway's LAN IP Address

_______._______._______._______

Before you install and configure your Gateway, you need the following
additional information. If you do not have this information, contact your Internet
Service Provider. Space is provided below for you to record this information.

If you have a 

DSL connection

and your ISP allocates 

IP information

dynamically over PPPoE

, you need your User Name and Password. Some ISPs

may also require a Service Name.

If your ISP allocates

fixed or static IP information, 

you need the

following information:

If your ISP allocates

IP information dynamically 

over a protocol other

then PPPoE, you do not need any further information.

Connecting Your Gateway

1.

Connect the power adapter to the Gateway and wait for the Alert 
LED to stop flashing.

2.

Ensure that your modem and computer are both switched on.

3.

Use the supplied cable to connect the Gateway's Ethernet Cable/ 
DSL port to the modem. Check that the Cable/DSL Status LED lights.

4.

Connect your computer to one of the 10/100 LAN ports on the 
Gateway. Check that the LAN Port Status LED lights.

Refer to Figure 6 for an example configuration.

PPPoE User Name

PPPoE Password

PPPoE Service name

IP Address

_______._______._______._______

Subnet Mask

_______._______._______._______

Default Gateway address

_______._______._______._______

DNS address

_______._______._______._______

1  INSTALLING YOUR GATEWAY 

Figure 2

Figure 3

Figure 4

Figure 5

2  CHANGING YOUR COMPUTER'S CONFIGURATION

Figure 1

1.

Now you have configured the Gateway via the wired computer, you can
connect to the Gateway via a wireless computer.

The Gateway and wireless clients must have both the same SSID and the
same WEP settings. All wireless clients must use Infrastructure mode.

The default wireless settings for the Gateway are:

2. 

If you do not have a Wireless LAN you can use the Gateway’s default settings.
Ensure that your wireless clients have the default SSID, channel and WEP as
detailed above.

If you have an existing Wireless LAN, configure the Gateway to use the same
SSID and WEP settings to be compatible with your existing wireless network.

3.

If your computer has both a wired and wireless NIC installed, you must ensure
that only one NIC is used to communicate with the LAN. To use the wireless
NIC, unplug the Ethernet cable and reboot your computer.

4.

Launch your web browser and attempt to browse to an internet web site such
as 

www.3com.com

. If you can successfully access this site, then your wireless

computer, Gateway and Cable/DSL modem have been successfully configured.

5.

3Com strongly recommends that you enable WEP encryption to improve the
security of your wireless network and you change the SSID to something other
than the default. Consult the on line help or the User Guide for details.

4

CONNECTING TO THE WIRELESS LAN 

Service Area Name/SSID

______________________________

Channel Number

______________________________

OfficeConnect Wireless 

Cable/DSL Gateway

Your existing  

Cable/DSL  

Modem

OfficeConnect 

Switch

Wireless 

users

Off

iceConne

ct

 W

ireless Cab

le/D

SL Ga

tew

ay

3C

RW

E5

11

96

LA

N Stat

us

Cable

/DSL

Wir

eless

Ale

rt

Internet

Figure 6

Example Network with OfficeConnect Wireless Cable/DSL Gateway.

Service Area Name / SSID is 101    Channel 11    WEP Encryption is off.

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