3Com Corporation reserves the right to revise this documentation and to make changes in content from time
to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either
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If there is any software on removable media described in this documentation, it is furnished under a license
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please contact 3Com and a copy will be provided to you.
UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herein are
provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are
provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights
only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable.
You agree not to remove or deface any portion of any legend provided on any licensed program or
documentation contained in, or delivered to you in conjunction with, this User Guide.
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not
be registered in other countries.
3Com, OfficeConnect and the 3Com logo are registered trademarks of 3Com Corporation.
Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows
NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of
Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively
through X/Open Company, Ltd.
Netscape Navigator is a registered trademark of Netscape Communications.
JavaScript is a trademark of Sun Microsystems
Wi-Fi and the Wi-Fi logo are registered trademarks of the WI-Fi Alliance.
IEEE and 802 are trademarks of the Institute of Electrical and Electronics Engineers, Inc.
All other company and product names may be trademarks of the respective companies with which they are
associated.
ENVIRONMENTAL STATEMENT
It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we
are committed to:
Establishing environmental performance standards that comply with national legislation and regulations.
Conserving energy, materials and natural resources in all operations.
Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental
standards. Maximizing the recyclable and reusable content of all products.
Ensuring that all products can be recycled, reused and disposed of safely.
Ensuring that all products are labelled according to recognized environmental standards.
Improving our environmental record on a continual basis.
End of Life Statement
3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.
Regulated Materials Statement
3Com products do not contain any hazardous or ozone-depleting material.
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The documentation for this product is printed on paper that comes from sustainable, managed forests; it is
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the inks are vegetable-based with a low heavy-metal content.
ABOUT THIS GUIDE
This guide describes how to install and configure the OfficeConnect
Wireless 54Mbps/108Mbps 11g cable/DSL Router(3CRWER100-75 and
3CRWER200-75).
This guide is intended for use by those responsible for installing and
setting up network equipment; consequently, it assumes a basic working
knowledge of LANs (Local Area Networks) and Internet Router systems.
If a release note is shipped with the OfficeConnect Wireless
!
54Mbps/108Mbps 11g cable/DSL Router
differs from the information in this guide, follow the information in the
release note.
Most user guides and release notes are available in Adobe Acrobat
Reader Portable Document Format (PDF) on the 3Com World Wide Web
site:
http://www.3com.com
and contains information that
Naming ConventionThroughout this guide, the OfficeConnect Wireless 54Mbps/108Mbps!
11g Cable/DSL Router is referred to as the “Router”.
Category 3 and Category 5 Twisted Pair Cables are referred to as Twisted
Pair Cables throughout this guide.
8ABOUT THIS GUIDE
ConventionsTa bl e 1 and Ta bl e 2 list conventions that are used throughout this guide.
Table 1 Notice Icons
IconNotice TypeDescription
Information noteInformation that describes important features or
instructions.
CautionInformation that alerts you to potential loss of data or
potential damage to an application, system, or device.
WarningInformation that alerts you to potential personal
injury.
Table 2 Text Conventions
ConventionDescription
The words “enter”
and “type”
Keyboard key namesIf you must press two or more keys simultaneously, the key
Words in italicsItalics are used to:
When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
■ Emphasize a point.
■ Denote a new term at the place where it is defined in the
text.
■ Identify menu names, menu commands, and software
button names. Examples:
From the Help menu, select Contents.
Click OK.
Feedback about this
User Guide
Your suggestions are very important to us. They will help make our
documentation more useful to you. Please e-mail comments about this
document to 3Com at:
pddtechpubs_comments@3com.com
Please include the following information when commenting:
■ Document title
■ Document part number (on the title page)
■ Page number (if appropriate)
Conventions9
Example:
■ OfficeConnect Wireless 54Mbps/108Mbps 11g cable/DSL Router User
Guide
■ Part Number DUA0554-TAAA02
■ Page 24
Do not use this e-mail address for technical support questions. For
information about contacting Technical Support, please refer to the
Support and Safety Information sheet.
Related
Documentation
In addition to this guide, each Router document set includes one
Installation Guide. This guide contains the instructions you need to install
and configure your Router.
10ABOUT THIS GUIDE
1
INTRODUCING THE ROUTER
Welcome to the world of networking with 3Com®. In the modern
business environment, communication and sharing information is crucial.
Computer networks have proved to be one of the fastest modes of
communication but, until recently, only large businesses could afford the
networking advantage. The OfficeConnect
has changed all this, bringing networks to the small office.
The products that compose the OfficeConnect range give you, the small
office user, the same power, flexibility, and protection that has been
available only to large corporations. Now, you can network the
computers in your office, connect them all to a single Internet outlet, and
harness the combined power of all of your computers.
The OfficeConnect Wireless 54Mbps/108Mbps 11g cable/DSL Router is
designed to provide a cost-effective means of sharing a single broadband
Internet connection amongst several wired and wireless computers. The
Router also provides protection in the form of an electronic “firewall”,
preventing anyone outside of your network from seeing your files or
damaging your computers. The Router can also prevent your users from
accessing Web sites which you find unsuitable.
Figure 1
only one computer is connected to the Internet. This computer must
always be powered on for the other computers on the network to access
the Internet.
shows an example network without a Router. In this network,
12CHAPTER 1: INTRODUCING THE ROUTER
Figure 1 Example Network Without a Router
When you use the Router in your network (Figure 2), it becomes your
connection to the Internet. Connections can be made directly to the
Router, or to an OfficeConnect Switch or Hub, expanding the number of
computers you can have in your network.
Figure 2 Example Network Using a Wireless 11g Cable/DSL Router
Router AdvantagesThe advantages of the Router include:
■ Shared Internet connection for both wired and wireless computers
■ High speed 802.11g wireless networking
■ No need for a dedicated, “always on” computer serving as your
Internet connection
■ Cross-platform operation for compatibility with Windows, Unix and
Macintosh computers
■ Easy-to-use, Web-based setup and configuration
■ Provides centralization of all network address settings (DHCP)
■ Acts as a Virtual server to enable remote access to Web, FTP, and other
services on your network
■ Security — Firewall protection against Internet hacker attacks and
encryption to protect wireless network traffic
■ Filtered access of inappropriate Web sites using the built-in URL filter
Router Advantages13
Package ContentsThe Router kit includes the following items:
■ One OfficeConnect Wireless 54Mbps/108Mbps 11g cable/DSL Router
■ One power adapter for use with the Router
■ Four rubber feet
■ One Ethernet cable
■ One CD-ROM containing the Quick Installation Guide!and this User
Guide
■ Installation Guide
■ One Support and Safety Information Sheet
■ One Warranty Flyer
If any of these items are missing or damaged, please contact your retailer.
14CHAPTER 1: INTRODUCING THE ROUTER
Minimum System
and Component
Requirements
Your Router requires that the computer(s) and components in your
network be configured with at least the following:
■ A computer with an operating system that supports TCP/IP
networking protocols (for example Windows 95/98/NT/Me/2000/XP,
Unix, Mac OS 8.5 or higher).
■ An Ethernet 10Mbps or 10/100 Mbps NIC for each computer to be
connected to the four-port switch on your Router.
■ An 802.11b or 802.11g wireless NIC.
■ A cable modem or DSL modem with an Ethernet port (RJ-45
connector).
■ An active Internet access account.
■ A Web browser that supports JavaScript, such as Netscape 4.7 or
higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher.
Front PanelThe front panel of the Router contains a series of indicator lights (LEDs)
that help describe the status of various networking and connection
operations.
Figure 3 Router - Front Panel
1 Alert LED
Orange
Indicates a number of different conditions, as described below.
Off - The Router is operating normally.
Flashing quickly - Indicates one of the following conditions:
Front Panel15
■ The Router has just been started up and is running a self-test routine,
or
■ The administrator has invoked the Reset to Factory Defaults
command, or
■ The system software is in the process of being upgraded
In each of these cases, wait until the Router has completed the current
operation and the alert LED is Off.
Flashing slowly - The Router has completed the Reset to Factory Defaults
process, and is waiting for you to reset the unit. To do this, remove
power, wait 10 seconds and then re-apply power. The Router will then
enter the start-up sequence and resume normal operation.
On for 2 seconds, and then off - The Router has detected and prevented
a hacker from attacking your network from the Internet.
Continuously on - A fault has been detected with your Router during the
start-up process. Refer to Chapter 6
“Troubleshooting”.
2Power LED
Green
Indicates that the Router is powered on.
3 Wireless LAN (WLAN) Status LED
Yellow
If the LED is on it indicates that wireless networking is enabled. If the LED
is flashing, data is being transmitted or received. If the LED is off, the
Wireless LAN has been disabled in the Router, or there is a problem. Refer
to Chapter 6
“Troubleshooting”.
4 Four LAN Status LEDs
Green (100 Mbps link) / yellow (10 Mbps link)
If the LED is on, the link between the port and the next piece of network
equipment is OK. If the LED is flashing, the link is OK and data is being
transmitted or received. If the LED is off, nothing is connected, the
connected device is switched off, or there is a problem with the
connection (refer to Chapter 6
“Troubleshooting”). The port will
automatically adjust to the correct speed and duplex.
16CHAPTER 1: INTRODUCING THE ROUTER
5 Cable/DSL Status LED
Green (100 Mbps link) / yellow (10 Mbps link)
If the LED is on, the link between the Router and the cable or DSL modem
is OK. If the LED is flashing, the link is OK and data is being transmitted or
received. If the LED is off, nothing is connected, the modem is switched
off or there is a problem (refer to Chapter 6
“Troubleshooting”).
Rear PanelThe rear panel (Figure 4) of the Router contains four LAN ports, one
Ethernet Cable/DSL port, a power adapter OK LED, and a power adapter
socket.
Figure 4 Router - Rear Panel
6 Wireless Antennae
The antennae on the product should be placed in a ‘V’ position when
initially installed.
CAUTION: Do not force the antennae beyond their mechanical stops.
Rotating the antennae further may cause damage.
7 Power Adapter Socket
Only use the power adapter supplied with this Router. Do not use any
other adapter.
8 Power Adapter OK LED
Green
Indicates that the power adapter is supplying power to the Router. If the
LED is off, there may be a problem with the power adapter or adapter
cable.
Rear Panel17
9 Ethernet Cable/DSL port
Use the supplied patch cable to connect the Router to the Ethernet port
on your cable or DSL modem. The port will automatically adjust to the
correct speed and duplex, and will set itself to MDI or MDIX depending
on the device to which they are connected and the type of cable used.
10 Four 10/100 LAN ports
Using suitable RJ-45 cable, you can connect your Router to a computer,
or to any other piece of equipment that has an Ethernet connection (for
example, a hub or a switch). The LAN ports will automatically set
themselves to MDI or MDIX depending on the device to which they are
connected and the type of cable used.
18CHAPTER 1: INTRODUCING THE ROUTER
HARDWARE INSTALLATION
2
IntroductionThis chapter will guide you through a basic installation of the Router,
including:
■ Connecting the Router to the Internet.
■ Connecting the Router to your network.
■ Setting up your computers for networking with the Router.
Safety Information
Positioning the
Router
WARNING: Please read the “
before you start.
VORSICHT: Bitte lesen Sie den Abschnitt “
sorgfältig durch, bevor Sie das Gerät einschalten.
AVERTISSEMENT: Veuillez lire attentivement la section “
importantes de sécurité” avant de mettre en route.
You should place the Router in a location that:
■ is conveniently located for connection to the cable or DSL modem that
will be used to connect to the Internet.
■ is centrally located to the wireless computers that will connect to the
Router. A suitable location might be on top of a high shelf or similar
furniture to optimize wireless connections to computers in both
horizontal and vertical directions, allowing wider coverage.
■ allows convenient connection to the computers that will be connected
to the four LAN ports on the rear panel, if desired.
■ allows easy viewing of the front panel LED indicator lights, and access
to the rear panel connectors, if necessary.
Safety Information” section in Appendix D
Wichtige Sicherheitshinweise”
Consignes
20CHAPTER 2: HARDWARE INSTALLATION
When positioning your Router, ensure:
■ It is out of direct sunlight and away from sources of heat.
■ Cabling is away from power lines, fluorescent lighting fixtures, and
sources of electrical noise such as radios, transmitters and broadband
amplifiers.
■ Water or moisture cannot enter the case of the unit.
■ Air flow around the unit and through the vents in the side of the case
is not restricted. 3Com recommends you provide a minimum of
25 mm (1 in.) clearance.
Using the Rubber
Feet
Use the four self-adhesive rubber feet to prevent your Router from
moving around on your desk or when stacking with other flat top
OfficeConnect units. Only stick the feet to the marked areas at each
corner of the underside of your Router.
Stacking the RouterIf you are stacking your Router with other OfficeConnect units, install the
Router at the top of the stack. Refer to the documentation supplied with
your other OfficeConnect unit for details on using the stacking clip.
A stacking clip is not supplied with the Router. Use the stacking clip
supplied with another stackable OfficeConnect unit.
Wall MountingThere are two slots on the underside of the Router that can be used for
wall mounting.
When wall mounting the unit, ensure that it is within reach of the power
outlet.
You will need two suitable screws to wall mount the unit. To do this:
1 Ensure that the wall you use is smooth, flat, dry and sturdy and make two
screw holes which are 150 mm (5.9 in.) apart.
2 Fix the screws into the wall, leaving their heads 3 mm (0.12 in.) clear of
the wall surface.
3 Remove any connections to the unit and locate it over the screw heads.
When in line, gently push the unit on to the wall and move it downwards
to secure.
Before you Install your Router21
When making connections, be careful not to push the unit up and off the
wall.
CAUTION: Only wall mount single units, do not wall mount stacked
units.
Before you Install
your Router
Before you install and configure your Router, you need the following
additional information. If you do not have this information, contact your
Internet Service Provider (ISP). 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 a User Name and Password:
PPPoE User Name: ______________________
PPPoE Password: ______________________
PPPoE Service Name: ______________________
You only need a PPPoE Service Name if your ISP requires one. Do not
enter anything if your ISP does not require this information.
If you have a DSL connection and your ISP allocates IP information
dynamically over PPTP, you need a User Name, Password and PPTP Server
Address:
PPTP User Name: ______________________
PPTP Password: ______________________
PPTP Server Address: ____.____.____.____
22CHAPTER 2: HARDWARE INSTALLATION
If your ISP allocates fixed or static IP information, you need the following
information:
IP Address : ____.____.____.____
Subnet Mask : ____.____.____.____
Default Router address : ____.____.____.____
DNS address : ____.____.____.____
If your ISP allocates IP information dynamically over a protocol other than
PPPoE, you do not need any further information. This configuration is
typical of cable connections.
Powering Up the
Router
Connecting the
Router
To power up the Router:
1 Plug the power adapter into the power adapter socket located on the
back panel of the Router.
2 Plug the power adapter into a standard electrical wall socket.
The first step for installing your Router is to physically connect it to a
cable or DSL modem and then connect it to a computer in order to be
able to access the Internet. See Figure 5
:
Figure 5 Connecting the Router
Connecting the Router23
Power
Supply Unit
11g Cable/DSL
Router
D
V
2
1
M
A
5
2
.
1
Your existing
Cable/DSL Modem
C
X
A
L
S
D
/
e
l
b
a
C
K
O
R
E
W
O
P
N
A
L
1
2
3
4
Wireless
Users
Internet
Your PC
To use your Router to connect to the Internet through an external cable
or DSL modem:
1 Insert one end of the supplied Ethernet (RJ-45 Category 5) cable into the
Cable/DSL port on the rear panel of the Router.
2 Insert the other end of the cable into the RJ-45 port on your cable or DSL
modem. Check that the Cable/DSL status LED lights on the Router.
3 Connect the cable or DSL modem to the Internet.
4 Connect your computer to one of the four LAN ports on the Router using
a Category 5 twisted pair cable. Check that the corresponding LAN status
LED on the Router lights.
You have now completed the hardware installation of your Router. Next
you need to set up your computers so that they can make use of the
Router to communicate with the Internet.
3Com recommends that you perform the initial Router configuration
from a computer that is directly connected to one of the LAN ports.
If you configure the Router from a wireless computer, note that you may
lose contact with the Router if you change the wireless configuration.
24CHAPTER 2: HARDWARE INSTALLATION
To communicate wirelessly with your Router, your wireless NIC should be
set as follows:
■ Encryption — none
■ Service Area Name/SSID — 3Com
■ Channel — 11
3
SETTING UP YOUR COMPUTERS
The Router has the ability to dynamically allocate network addresses to
the computers on your network, using DHCP. However, your computers
need to be configured correctly for this to take place. To change the
configuration of your computers to allow this, follow the instructions in
this chapter. If your computers are configured with fixed or static
addresses and you do not wish to change this, then you should use the
Discovery program on the Router CD-ROM to detect and configure your
Router. Refer to Appendix A
program.
for information on using the Discovery
Obtaining an IP
Address
Automatically
Windows 2000If you are using a Windows 2000-based computer, use the following
Refer to the section below which relates to your operating system for
details on how to obtain an IP address automatically.
procedure to change your TCP/IP settings:
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 6
TCP/IP and click on Properties.
should be displayed. Select Internet Protocol
26CHAPTER 3: SETTING UP YOUR COMPUTERS
Figure 6 Local Area Properties Screen
6 Ensure that the options Obtain an IP Address automatically, and Obtain
DNS server address automatically are both selected as shown in Figure 7
Click OK.
.
Figure 7 Internet Protocol (TCP/IP) Properties Screen
7 Restart your computer.
Obtaining an IP Address Automatically27
Windows XPIf you are using a Windows XP computer, use the following procedure to
change your TCP/IP settings:
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. Click OK.
7 Restart your computer.
Windows 95/98/MEIf you are using a Windows 95/98/ME computer, use the following
procedure to change your TCP/IP settings:
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Network. Select the TCP/IP item for your network card
and click on Properties.
3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP
address automatically is selected. Click OK.
MacintoshIf you are using a Macintosh computer, use the following procedure to
change your TCP/IP settings:
1 From the desktop, select Apple Menu, Control Panels, and TCP/IP.
2 In the TCP/IP control panel, set Connect Via: to “Ethernet”.
3 In the TCP/IP control panel, set Configure: to “Using DHCP Server.”
4 Close the TCP/IP dialog box, and save your changes.
5 Restart your computer.
28CHAPTER 3: SETTING UP YOUR COMPUTERS
Disabling PPPoE
and 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 Start menu, select Settings > Control Panel.
2 Double click on Internet Options.
3 Select the Connections Tab. A screen similar to Figure 8
displayed.
4 Select the Never Dial a Connection option.
Figure 8 Internet Properties Screen
should be
Disabling Web
Proxy
You may wish to remove the PPPoE client software from your computer
to free resources, as it is not required for use with the Router.
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 LAN Settings at the bottom. Make sure that
the Use Proxy Server option is unchecked.
4
RUNNING THE SETUP WIZARD
Accessing the
Wizard
The Router setup program is Web-based, which means that it is accessed
through your Web browser (Netscape Navigator 4.7 or higher, Internet
Explorer 5.0 or higher, or Mozilla 1.2.1 or higher).
To use the Setup Wizard:
1 Ensure that you have at least one computer connected to the Router.
Refer to Chapter 2
2 Launch your Web browser on the computer.
3 Enter the following URL in the location or address field of your browser:
http://192.168.1.1 (Figure 9
Figure 9 Web Browser Location Field (Factory Default)
4 To log in as an administrator, enter the password (the default setting is
admin) in the System Password field and click Log in (Figure 10
for details on how to do this.
). The Login screen displays.
).
30CHAPTER 4: RUNNING THE SETUP WIZARD
Figure 10 Router Login Screen
5 If the password is correct, the Country Selection screen will appear. Select
the country you wish to configure the Router for, then click Apply.
(Figure 11
)
If your purchased your Router in the United States, you do not see this
screen, as it is automatically set.
Figure 11 Country Selection Screen
Accessing the Wizard31
6 When you have selected a country either:
■ The Welcome screen will appear (Figure 12). Select the Wizard tab
and click Wizard.
or
■ If your Router has not been configured before, the Wizard will launch
automatically (refer to Figure 13
).
7 Click Next.
8 You will be guided step by step through a basic setup procedure.
When the Change Administration Password screen (Figure 14) appears,
type the Old Password, then a new password in both the New Password
and Confirm Password boxes.
3Com recommends entering a new password when setting up the Router
for the first time. The Router is shipped from the factory with a default
password, admin.
1. Password is case sensitive.
Accessing the Wizard33
2. Write the new password down and keep it in a safe place, so that you
can change your settings in the future.
Time Zone
WAN Settings
Click Next to display the Time Zone setup screen (Figure 15
Figure 15 Time Zone Screen
).
Select your time zone from the pull-down menu, check the daylight
savings option if required, and then click Next.
The Daylight Savings option advances the system clock by one hour. It
does not cause the system clock to be updated for daylight savings time
automatically.
Figure 16 Internet Settings Screen
This Internet Addressing Mode window allows you to set up the Router
for the type of Internet connection you have. Before setting up your
34CHAPTER 4: RUNNING THE SETUP WIZARD
Internet connection mode, have the modem setting information from
your ISP ready.
Select an Internet Addressing mode from the following: