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.
Connecting to a Hub or Switch
To share your Gateway with more than four users you will need an
additional Hub or Switch. Connect a LAN port of your Gateway to the hub
or switch, eg. OfficeConnect Dual Speed Switch 8 Plus.
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 or PPTP Client Software
If you have PPPoE or PPTP client software installed on
your computer, you will need to disable it. To do this:
1. From the Windows Startmenu, select Settings >
Control Panel.
2. Double click on Internet Options.
3. Select the ConnectionsTab. A screen similar to
Figure 2 should be displayed.
4. Select the Never Dial a Connectionoption 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 usingWindows 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 3 should be displayed.
Select Internet Protocol TCP/IPand 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 4. Click OK.
7. Restart your computer.
For computers usingWindows 95, 98 and ME.
1. From the Windows StartMenu, select Settings > Control Panel.
2. Double click on Network. Select the TCP/IPitem for your network card as
shown in Figure 5 and click on Properties.
3. In the TCP/IP dialog, select the IP Addresstab, and ensure that Obtain IP
address automaticallyis selected as shown in Figure 6. Click OK.
4. Restart your computer.
For computers using Windows XP.
1. From the Windows Startmenu, select Control Panel
2. Click on Network and Internet Connections
3. Click on the Network Connectionsicon
4. Double click on LAN or High Speed Connectionicon. A screen titled Local
Area Connection Statuswill 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 automaticallyare both selected as shown in Figure 4. Click OK.
7. Restart your computer.
Figure 3 Figure 4 Figure 5 Figure 6
2 CHANGING YOUR COMPUTER'S CONFIGURATION
Figure 2
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 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 Wizardtab 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.
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.
Gateway's LAN IP Address _______._______._______._______
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 that you do not have a web proxy enabled on your
computer. Go to the Control Paneland click on Internet Options. Select
the Connections tab and click on the LAN Settings button at the bottom.
Make sure that the Use Proxy Serveroption 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.
• 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.
Cable Internet Connections.
• Some Cable providers authenticate to the user’s computer MAC address.
If this is required, go to Internet Settingsand 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 Settingsand enter the host name of your
computer into the Host Namefield.
DSL Internet Connections.
• If you have an existing DSL line and have PPPoE or PPTP client software
installed on your computer, you will need to disable it. See section 2.
• If your DSL line uses PPPoE or PPTP, go to Internet Settingsand ensure
that the correct IP Allocation modeis selected. Check that your
Usernameand Password are correct.
• Some DSL providers require the use of a PPPoE Service Name. If this is
required, go to Internet Settingsand 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 5 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.
PROBLEM SOLVING
Internet
Your existing
Cable/DSL Modem
Power
Supply Unit
Your PC
Wireless
Users
3Com OfficeConnect
Wireless 11b Cable/DSL
Gateway
Figure 1Example Network with OfficeConnect Wireless 11b Cable/DSL Gateway.
4RUNNING THE SETUP WIZARD
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 computerhas 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.
5CONNECTING TO THE WIRELESS LAN
Before you can configure the Gateway you need to know the IP
information allocation method used by your ISP. There are four different
ways that ISPs allocate IP information, as described below:
1. Dynamic IP Address (DSL or Cable)
Dynamic IP addressing (or DHCP) automatically assigns the Gateway IP
information. This method is popular with Cable providers. This method
is also used if your modem has a built in DHCP server.
2. PPPoE (DSL only)
If the installation instructions that accompany your modem ask you to
install a PPPoE client on your PC then select this option. Note that
when you install the Gateway, you will not need to use the PPPoE
software on your PC. To configure the Gateway you will need to know
the following: Username, Password, and Service Name (if required by
your ISP).
3. Static IP Address (DSL or Cable)
The ISP provides the IP addressing information for you to enter
manually. To configure the Gateway you will need to know the
following: IP Address, Subnet Mask, ISP Gateway Address, and DNS
address(es).
4. PPTP (DSL or Cable)
PPTP is only used by some European providers. If the installation
instructions that accompany your modem ask you to setup a dialup
connection using a PPTP VPN tunnel then select this option. Note that
when you install the Gateway, you will not need to use the dialup VPN
on your PC anymore. To configure the Gateway you will need to know
the following: Username, Password, Service Name (if required by your
ISP), and VPN Server address (usually your modem).
You will be asked for the IP Allocation Mode when you run the Setup Wizard.
3ISP CONNECTION METHODS
Service Area Name/SSID ______________________________
Channel Number ______________________________
Service Area Name / SSID is 3Com Channel 11 WEP Encryption is off.