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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 the CD-ROM. This will always
connect you to the Gateway.

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.

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

PROBLEM SOLVING   

Keeping Your Existing IP Configuration

If you don't want to change your IP infrastructure or have static IP addresses
the Discovery Application, found on the accompanying CD, can be used to
locate the Gateway. You can then use the Configuration Wizard to set its IP
parameters. 

Refer to the User Guide for more details.

Running the Configuration Wizard

1.

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

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 are able to 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 internet modem have been correctly configured.

Now that you have successfully configured your Gateway 3Com
recommends, as part of our continuous improvement process, you download
the latest firmware from the web at 

www.3com.com

.

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

Connecting Additional Computers

You may now connect additional computers to the remaining 10/100 LAN
ports on the Gateway. Ensure that each computer you connect to the
Gateway has been configured as described in section 2.  You should restart
each computer whilst it is connected to the Gateway before you try to use it
to access the Internet.

3

CONFIGURING YOUR GATEWAY 

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.

Use the supplied cable to connect the Gateway's Ethernet Cable/DSL
port to your Cable/DSL modem. Ensure that your modem is 
connected to the Internet and switched on.

2.

Connect your computer to one of the 10/100 LAN ports on the Gateway.

3.

Connect the power adapter to the Gateway and wait for the Alert LED
to stop flashing. Check that the Cable/DSL Status LED is illuminated.

4.

Switch on your computer. Once your computer is ready to use, 
check that the LAN Port Status LED on the Gateway is illuminated.

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 

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.

Figure 2

Figure 3

Figure 4

Figure 5

2  CHANGING YOUR COMPUTER'S CONFIGURATION

Figure 1

OfficeConnect

Cable/DSL Secure Gateway

Your existing  

Cable/DSL  

Modem

OfficeConnect 

Switch

Off

iceC

onn

ect

 Ca

ble/

DSL

 Sec

ure

 Ga

tew

ay

3C8

56-

95

LAN

 Statu

s

Cable/

DSL

Ale

rt

Internet

Figure 6

Example Network with OfficeConnect Cable/DSL Secure Gateway.

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