3Com 3Crwdr200A 75 Owners Manual DUA0554 TAAA02

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OfficeConnect®
ADSL Wireless 108Mbps 11g Firewall Router
User Guide

Model WL-553
3CRWDR200A-75
3CRWDR200B-75

http://www.3com.com/
Part No. 10015251 Rev. AB
Published August 2008

3Com Corporation
350 Campus Drive
Marlborough, MA
USA 01752-3064

Copyright © 2008, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced
in any form or by any means or used to make any derivative work (such as translation, transformation, or
adaptation) without written permission from 3Com Corporation.
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
implied or expressed, including, but not limited to, the implied warranties, terms or conditions of
merchantability, satis34factory quality, and fitness for a particular purpose. 3Com may make improvements or
changes in the product(s) and/or the program(s) described in this documentation at any time.
If there is any software on removable media described in this documentation, it is furnished under a license
agreement included with the product as a separate document, in the hard copy documentation, or on the
removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy,
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
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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
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3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.
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the inks are vegetable-based with a low heavy-metal content.

CONTENTS

ABOUT THIS GUIDE
Naming Convention 9
Conventions 9
Related Documentation

1

10

INTRODUCING THE ROUTER
OfficeConnect ADSL Wireless 108Mbps 11g Firewall Router
Firewall Router Advantages 13
Package Contents 13
Minimum System and Component Requirements 14
Front Panel 14
Rear Panel 16

2

HARDWARE INSTALLATION
Introduction 19
Safety Information 19
Positioning the Router 19
Using the Rubber Feet 20
Stacking the Router 20
Wall Mounting 20
Before you Install your Router 21
Powering Up the Router 22
Connecting the Router 22

3

SETTING UP YOUR COMPUTERS
Obtaining an IP Address Automatically
Windows 2000 25
Windows Vista 27
Windows XP 27

25

11

Windows 95/98/ME 27
Macintosh 28
Disabling PPPoE and PPTP Client Software
Disabling Web Proxy 29

4

28

RUNNING THE SETUP WIZARD
Accessing the Wizard 31
Welcome 33
Password 34
Time Zone 35
WAN Settings 36
LAN Settings 41
DHCP 41
Wireless Settings 42
Summary 44

5

ROUTER CONFIGURATION
Navigating Through the Router Configuration Pages
Main Menu 45
Option Tabs 46
Welcome Screen 46
Notice Board 46
Password 47
Wizard 48
LAN Settings 48
Unit Configuration 48
Static DHCP Assignment 50
DHCP Lease Table 51
Wireless Settings 51
Configuration 52
Encryption 54
WMM 57
Connection Control 59
Client List 61
Advanced Wireless Settings 61
WDS 64
Internet Settings 65

45

Firewall 66
Virtual Servers 66
Special Applications 68
DMZ 69
SPI 70
PC Privileges 71
Schedule Rules 72
Content Filter 73
URL Filter 74
System Tools 76
Restart 77
Time Zone 78
Configuration 79
Upgrade 80
Advanced 81
Static Route 81
RIP 81
DDNS 82
Quality of Service 84
Proxy ARP 84
IPSec 85
Port Mapping 87
Management 88
Syslog 88
SNMP 89
UPnP 90
Trusted Station 91
Remote Management 92
Utility 92
Diagnostics 93
Device Info 94
Summary 95
WAN 95
Statistics 96
Route 97
ARP 97
Support/Feedback 98
Support/Feedback 98

Support 98
Feedback 99

6

TROUBLESHOOTING
Basic Connection Checks 101
Browsing to the Router Configuration Screens 101
Connecting to the Internet 102
Forgotten Password and Reset to Factory Defaults 102
Wireless Networking 103
Power LED or Power Adapter OK LED Not Lit 105
Replacement Power Adapters 105
Alert LED 106
Recovering from Corrupted Software 106
Frequently Asked Questions 107
3Com Warranty and Support Services 108

A

USING DISCOVERY
Running the Discovery Application 111
Windows Installation (95/98/2000/Me/NT/ XP)

B

111

IP ADDRESSING
The Internet Protocol Suite 113
Managing the Router over the Network 113
IP Addresses and Subnet Masks 113
How does a Device Obtain an IP Address and Subnet Mask?
DHCP Addressing 115
Static Addressing 115
Auto-IP Addressing 115

C

TECHNICAL SPECIFICATIONS
ADSL Wireless 11g 108Mbps Firewall Router
Standards 118
System Requirements 119
Ethernet Performance 119
Wireless Performance 119

117

115

Cable Specifications

D

119

SAFETY INFORMATION
Important Safety Information 121
Wichtige Sicherheitshinweise 122
Consignes importantes de sécurité 123

E

END USER SOFTWARE LICENSE AGREEMENT
GLOSSARY
INDEX
REGULATORY NOTICES
Regulatory Information 137
CAUTION: EXPOSURE TO RADIO FREQUENCY RADIATION. 137
US - Radio Frequency Requirements 138
USA-FEDERAL COMMUNICATIONS COMMISSION (FCC) 138
MANUFACTURER’S DECLARATION OF CONFORMITY 139
CANADA – INDUSTR YCANADA (IC) 139
INDUSTRY CANADA (IC) EMISSIONS COMPLIANCE STATEMENT 140
DE CONFORMITÉ À LA RÉGLEMENTATION D’INDUSTRIE CANADA 140
SAFETY COMPLIANCE NOTICE 140

ABOUT THIS GUIDE

This guide describes how to install and configure the OfficeConnect ADSL
Wireless 108Mbps 11g Firewall Router (3CRWDR200A-75 and
3CRWDR200B-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 ADSL Wireless
108Mbps 11g Firewall Router and contains information that 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

Naming Convention

Throughout this guide, the OfficeConnect ADSL Wireless 108Mbps 11g
Firewall 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.

Conventions

Table 1 and Table 2 list conventions that are used throughout this guide.
Table 1 Notice Icons
Icon

Notice Type

Description

Information note

Information that describes important features or
instructions.

10

CHAPTER : ABOUT THIS GUIDE

Table 1 Notice Icons
Icon

Notice Type

Description

Caution

Information that alerts you to potential loss of data or
potential damage to an application, system, or device.

Warning

Information that alerts you to potential personal
injury.

Table 2 Text Conventions
Convention
The words “enter”
and “type”
Keyboard key names

Words in italics

Description
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.”
If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
Italics are used to:
■

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.

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.

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® product range from 3Com
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.

OfficeConnect ADSL
Wireless 108Mbps
11g Firewall Router

The OfficeConnect ADSL Wireless 108Mbps 11g Firewall 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 also gives you many administrative
features such as scheduled internet access policies, web content filter, and
intrusion detections.

Figure 1 shows an example network without a Router. In this network,
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.

12

CHAPTER 1: INTRODUCING THE ROUTER

Figure 1 Example Network Without a Firewall Router

When you use the Firewall 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 ADSL Wireless 108Mbps 11g Firewall Router

Firewall Router Advantages

Firewall Router
Advantages

Package Contents

13

The advantages of the Firewall ADSL Wireless 108Mbps 11g Firewall
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

■

Internet Access Policy, to schedule your Internet Acccess rules with
options in keywords and applications blocking

■

Wireless Multimedia, to maximize the quality of your internet service
with traffic prioritization

The Router kit includes the following items:
■

One OfficeConnect ADSL Wireless 108Mbps 11g Firewall Router

■

One power adapter for use with the Router

■

Four rubber feet

■

One RJ 11 cable (typically a telephone cable) if your model is
3CRWDR200A-75

■

One RJ 45 cable (typically an Ethernet cable) if your model is
3CRWDR200B-75

■

One CD-ROM containing the Router Discovery program and this User
Guide

■

Installation Guide

■

One Support and Safety Information Sheet

14

CHAPTER 1: INTRODUCING THE ROUTER

■

One Warranty Flyer

If any of these items are missing or damaged, please contact your retailer.

Minimum System
and Component
Requirements

Front Panel

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 10/100/1000 Mbps NIC for each computer to
be connected to the four-port switch on your Router.

■

An 802.11b or 802.11g wireless NIC.

■

An active ADSL subscription and connection.

■

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.

The 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

3CRWDR200A-75
Alert Power WLAN Sync Data
DSL DSL

ADSL Wireless 108Mbps 11g Firewall Router

On= 10M/100M, Flash = Activity

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 Panel

15

■

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”.
2 Power 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.
5 Sync DSL Status LED

16

CHAPTER 1: INTRODUCING THE ROUTER

The LED lights up and stays on when the connection between ADSL
service and the Router is OK. If the LED is off, nothing is connected or
there is a problem (refer to Chapter 6 “Troubleshooting”).
6 Data DSL Status LED
If the LED is flashing, the link is OK and data is being transmitted or
received over the internet. If the LED is off this can also indicate the login
has failed on a PPPoE or PPPoA ADSL connection
The Sync DSL LED and Data DSL LED are excellent diagnostic indicators.
If interpreted correctly they can give a reliable indication of the cause of an
ADSL connection failure.

Rear Panel

The rear panel (Figure 4) of the Router contains four LAN ports, one
Ethernet ADSL port, a power adapter OK LED, and a power adapter
socket.
Figure 4 Router - Rear Panel

7 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.
8 ADSL Port
Using the
socket via
or
Using the
socket via

RJ11 cable provided, connect your Router to the telephone
a splitter.
RJ45 cable provided, connect your Router to the telephone
a splitter.

9 Power Adapter Socket

Rear Panel

17

Only use the power adapter supplied with this Router. Do not use any
other adapter.
10 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.
11 Reset Button
Press this button to reset your Router to factory default.
12 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.

18

CHAPTER 1: INTRODUCING THE ROUTER

2
Introduction

HARDWARE INSTALLATION

This 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
WARNING: Please read the “Safety Information” section in Appendix D
before you start.
VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise”
sorgfältig durch, bevor Sie das Gerät einschalten.
AVERTISSEMENT: Veuillez lire attentivement la section “Consignes
importantes de sécurité” avant de mettre en route.

Positioning the
Router

You should place the Router in a location that:
■

is conveniently located for connection to the telephone socket 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.

20

CHAPTER 2: HARDWARE INSTALLATION

When positioning your Router, ensure:

Using the Rubber
Feet

Stacking the Router

■

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.

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.
If 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 Mounting

There 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.Do not install the Router more than 200 cm above the ground.
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 Router

21

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, (or PPPoA, which is in common use in the UK),
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.
You should leave the Authentication Method as its default: Auto if your
ISP does not specify this parameter.
If your ISP allocates fixed or static IP information, you need the following
information:
IP Address

: ____.____.____.____

Subnet Mask

: ____.____.____.____

Default Router address

: ____.____.____.____

DNS address

: ____.____.____.____

22

CHAPTER 2: HARDWARE INSTALLATION

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

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.

Connecting the
Router

The first step for installing your Router is to physically connect it to an
RJ11or RJ45 cable, as appropriate, with the splitter and then connect the
Router to a computer in order to be able to access the Internet. See
Figure 5:
Figure 5 Connecting the Router

Qpxfs!
Tvqqmz!Voju

sofu

Jouf

2
POWER OK

1

LAN

Cable/DSL

Xjsfmftt!
Vtfst

To use your Router to connect to the Internet through an DSL connection:
1 Insert one end of the supplied telephone (RJ-11) cable into the ADSL port
on the rear panel of the Router. Check that the DSL Sync status LED lights
on the Router.
2 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.

Connecting the Router

23

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.
To communicate wirelessly with your Router, your wireless NIC should be
set as follows:
■

Encryption — none

■

Service Area Name/SSID — 3Com

■

Channel — 11

24

CHAPTER 2: HARDWARE INSTALLATION

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 for information on using the Discovery
program.

Obtaining an IP
Address
Automatically
Windows 2000

Refer to the section below that relates to your operating system for
details on how to obtain an IP address automatically.

If you are using a Windows 2000-based 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 and Dial-Up Connections.
3 Double click on Local Area Connection.
4 Click on Properties.
5 A screen similar to Figure 6 should be displayed. Select Internet Protocol
TCP/IP and click on Properties.

26

CHAPTER 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 Automatically

Windows Vista

27

If you are using a Windows Vista computer, use the following procedure
to change your TCP/IP settings:
1 From the Windows start menu, select Network.
2 Select Network Center option from the top menu.
3 Select Manage Networks from the left panel.
4 Double click on the Local Area Connection icon. A screen titled Local
Area Connection Status will appear.
5 Click on Details and bring up the Local Area Connection Properties tab.
6 Select Internet Protocol TCP/IP and click on Properties.
7 Ensure that the options Obtain an IP Address automatically, and Obtain
DNS servers automatically are both selected. Click OK.

Windows XP

If 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 Netmwork 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/ME

If 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.

28

CHAPTER 3: SETTING UP YOUR COMPUTERS

Macintosh

If 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.

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 should be
displayed.
4 Select the Never Dial a Connection option.
Figure 8 Internet Properties Screen

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.

Disabling Web Proxy

Disabling Web
Proxy

29

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.

30

CHAPTER 3: SETTING UP YOUR COMPUTERS

4
Accessing the
Wizard

RUNNING THE SETUP 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 for details on how to do this.
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. The Login screen displays.
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 .

32

CHAPTER 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.
If you 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 Wizard

33

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.
Welcome

Figure 12 Welcome Screen

34

CHAPTER 4: RUNNING THE SETUP WIZARD

Figure 13 Wizard Screen

Password

Figure 14 Change Administration Password Screen

When the Change Administration Password screen appears, type the Old
Password, then a new password in both the New Password and Confirm
Password boxes.

Accessing the Wizard

35

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.
2. Write the new password down and keep it in a safe place, so that you
can change your settings in the future.
Click Next to display the Time Zone setup screen.
Time Zone

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.

36

CHAPTER 4: RUNNING THE SETUP WIZARD

WAN Settings

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
Internet connection mode, have the account information from your ISP
ready.
Select an Internet Addressing mode from the following:
■

PPPoE

■

PPPoA

■

Dynamic/Fix IP in 1483 Bridge Mode

■

IP over ATM

■

Bridging

Accessing the Wizard

37

PPPoE Mode
Figure 17 PPPoE Screen

To setup the Router for use with a PPP over Ethernet (PPPoE) connection,
use the following procedure:
1 Enter your PPP user name in the PPPoE User Name text box.
2 Enter your PPP password in the PPPoE Password text box.
3 Enter your PPP over Ethernet service name in the PPPoE Service Name text
box.
Do not enter anything in this box if your ISP does not require a service
name.
4 Select Dial on Demand if you want the the internet connection dropped
when there is no activities with the Internet. Enter an idle time from the
Maximum Idle Time drop down list. This is the amount of time without
Internet activity that you want to allow before the Router ends the PPPoE
session.
5 Manual IP Address/DNS Server configuration: Enter the IP Address that
you would like to be assigned to the router’s WAN interface if you have
required one from your ISP. And enter the DNS Server’s IP Address if it is
given by your ISP(optional).
6 Check all of your settings, and then click Next.

38

CHAPTER 4: RUNNING THE SETUP WIZARD

PPPoA Mode
Figure 18 The PPPoA Screen

To setup the Router for use with a PPPoA connection:
1 Enter your PPP over ATM user name in the PPP User Name text box.
2 Enter your PPP over ATM password in the PPP Password text box.
3 Select Dial on Demand if you want the internet connection dropped
when there is no activities with the Internet. Enter an idle time from the
Maximum Idle Time drop down list. This is the amount of time without
Internet activity that you want to allow before the Router ends the PPPoE
session.
4 Manual IP Address/DNS Server configuration: Enter the IP Address that
you would like to be assigned to the router’s WAN interface if you have
required one from your ISP. And enter the DNS Server’s IP Address if it is
given by your ISP(optional).
5 Check all of your settings, and then click Next.
VPI/VCI: VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier)
define an ATM PVC(Permanent Virtual Circuit). Please obtain these values
from your ISP.

Accessing the Wizard

39

Dynamic/Fixed IP in 1483 Bridge Mode
Figure 19 The Dynamic/Fixed IP in Bridge Mode

To setup the Router for use with a Dynamic/Fixed IP in 1483 Bridge
Mode connection, use the following procedure:
1 Manual IP Address Configuration: You may enter the router’s WAN IP
address and subnet mask here if your ISP has given you a static IP
Address.
2 Manual Default Gateway Configuration: Enter the gateway’s IP address or
select the WAN interface to use to connect to it.
3 Manual DNS Server Configuration:
Your ISP may provide you with primary and secondary DNS addresses. If
they have been provided, enter the addresses in the appropriate text
boxes. If not, leave 0.0.0.0 in the boxes.
4 Check all of your settings, and then click Next.

40

CHAPTER 4: RUNNING THE SETUP WIZARD

IP over ATM Mode(IPoA)
Figure 20 The IP over ATM Screen

To set up the Router for use with an IPoA mode, use the following
procedure:
1 WAN IP Address: Enter the IP Address given by your ISP.
2 WAN Subnet Mask: Enter the subnet mask given by your ISP.
3 Manual Default Gateway Configuration: Select this option to enter the
WAN interface’s IP Address if you are given with this information by your
ISP or select a WAN interface to use to connect to it.
4 Manual DNS configuration: Enter the DNS server’s address from the ISP if
it is required. (this is optional).

Accessing the Wizard

41

Bridging Mode
Figure 21 Bridging Mode Screen

With bridging the router simply acts like a modem. The router passes
traffic through to another device, usually a computer or a router, which
handles authentication with the ISP.
LAN Settings

Figure 22 LAN IP Address Screen

This screen displays a suggested LAN IP address and subnet mask of the
Router. It also allows you to change the IP address and subnet mask.
DHCP

The Router contains a Dynamic Host Configuration (DHCP) server that
can automatically configure the TCP/IP settings of every computer on
your network.

42

CHAPTER 4: RUNNING THE SETUP WIZARD

Figure 23 DHCP Server Setup Screen

To activate the DHCP Server option, select Enable the DHCP server with
the following settings: and specify the IP pool range. The largest available
continuous IP pool will be automatically entered; if this is not appropriate,
make your required changes. To disable DHCP, select Do not enable the
DHCP server. Click Next when you have finished.
Wireless Settings

Figure 24 Wireless Configuration Screen

This screen displays the Channel and Service Area Name. It also allows
you to change these settings. There are a maximum of 14 channels, the
number available to you is dependent on the country you reside in.
Selecting Clear Channel Select from the Channel drop-down list allows

Accessing the Wizard

43

the Router to automatically select an available channel when first
powered on.
The Service Area Name default for 3Com products is “3Com”. Up to 32
(case sensitive) characters can be entered for the Service Area Name.
3Com strongly recommends that you change the SSID to something
other than the default.
Click Next when you have finished.
If you are configuring the Router from a wireless computer any changes
you make to the wireless configuration will result in communication
between the Router and your computer being lost. This is why 3Com
strongly recommends that you configure the Router from a wired
computer.
It is very important that you set up your wireless clients to use the same
Service Area Name or SSID as the one you use on this screen. If your
clients use a different Service Area Name then they will not be able to
communicate with the Router.
The choice of channel is less important as Clients will generally search all
of the available channels. You should however make a note of the
channel you select as this may be useful if you experience problems with
your clients.

44

CHAPTER 4: RUNNING THE SETUP WIZARD

Summary

Figure 25 Configuration Summary Screen

When you complete the Setup Wizard, a configuration summary will
display. 3Com recommends that you verify the configuration information
of the Router and then print this page for your records. Click Finish and
the router will reboot now.
If you have made changes to the LAN Settings or wireless configuration
options, you may need to reconfigure the computer you are using in
order to make contact with the Router again.
Your Router is now configured and ready for use.
For information on improving your Wireless network security see
“Wireless Settings” on page 51.
See Chapter 5 for a detailed description of the Router configuration
screens.

5

ROUTER CONFIGURATION

Navigating
Through the Router
Configuration
Pages

Main Menu

This chapter describes all the screens available through the Router
configuration pages, and is provided as a reference. To get to the
configuration pages, browse to the Router by entering the URL in the
location bar of your browser. The default URL is http://192.168.1.1 but if
you changed the Router LAN IP address during initial configuration, use
the new IP address instead. When you have browsed to the Router, log in
using your system password (default admin).
At the left side of all screens is a main menu, as shown in Figure 26 on
page 46. When you click on a topic from the main menu, that page will
appear in the main part of the screen.
■

Welcome — displays the firmware version of the Router, allows you to
change your password, and launch the Wizard

■

LAN Settings — allows you to configure IP address and subnet mask
information, set up DHCP server parameters, and display the DHCP
client list.

■

Wireless Settings — enables /disables access from wireless computers,
configures WPA/WPA2 or WEP encryption, provides facilities for
improving the security of the wireless network, setup WMM
parameters, Wireless mode selection, Mac Access Control and
Advanced Wireless Settings.

■

Internet Settings — sets up Internet addressing modes.

■

Firewall — allows configuration of the Router’s firewall features:
Virtual Servers, Special Applications, Content Filtering, URL Filtering,
Internet Access Policy, and SPI options.

■

System Tools — allows the administrator to perform maintenance
activities on the Router.

46

CHAPTER 5: ROUTER CONFIGURATION

Option Tabs

■

Advanced — allows you to monitor and configure the Router’s
advanced features, including Static Route, RIP, DDNS, IPSec, Proxy ARP,
Port Mapping and QoS(Quality of Service).

■

Management — displays the current status and activity logs of the
Router, SNMP enable/disable, and remote management control.

■

Device Info — Providing the configuration summary and statistics on
your LAN/WAN/ATM/ADSL connection.

■

Support/Feedback — contains a comprehensive online help system
and allows you to provide 3Com with feedback on your Router.

Each corresponding menu page may also provide sub-sections which are
accessed through the use of tabs (see Figure 26 for example). To access a
sub-section, simply click on the required tab.
Getting Help
On every screen, a Help button is available which provides access to the
context-sensitive online help system. Click Help for further assistance and
guidance relating to the current screen.

Welcome Screen

Notice Board

The Welcome section allows you to view the Notice board and to change
your Password. You can also gain access to the Configuration Wizard.
Figure 26 Notice Board Screen

Welcome Screen

47

The Notice Board is used to display firmware version and configuration
warning messages. For example, you would be warned if you had
disabled wireless networking or wireless encryption.
Password

Figure 27 Password Screen

Changing the Administration Password
You can change the password to prevent unauthorized access to the
Administration System. To do this:
1 Enter the current password in the Old Password field
2 Enter the new password in the New Password field
3 Enter the new password again in the Confirm Password field
4 Click Apply to apply the new password
The password is case sensitive.

f you have forgotten your password you need to reset the Router.

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CHAPTER 5: ROUTER CONFIGURATION

Wizard

Figure 28 Wizard Screen

Click WIZARD... to launch the configuration wizard. Refer to Chapter 4
for information on how to run the wizard.

LAN Settings
Unit Configuration

The LAN Settings menu provides the following options:
Figure 29 Unit Configuration Screen

LAN Settings

49

This screen allows you to change the IP address and subnet mask.
1 IP Address: Enter the IP Address for the router.
2 Subnet Mask: Enter the Subnet Mask for the router.
3 Enable DHCP server on the LAN: Check this box to enable the DHCP
service on the router(enabled by default).
The Firewall Router contains a Dynamic Host Configuration (DHCP) server
that can automatically configure the TCP/IP settings of every computer on
your network.

4 Select Enable the DHCP server with the following settings: Enter the start
and end IP Address of your DHCP range. Enter the leased time in hours to
specify the frequency for DHCP assignment.Check all of your settings and

click Save, then click Apply.
Auto IP Range: Click this to automatically allocate valid hosts in this
network, ie, Class C. And there is 253(254-1 for the router) available
addresses in the network.
5 3Com NBX Call Processor: If you have 3Com NBX Call Processor, enter its
IP Address here.
6 Enable DHCP Server Relay: Check this box to make the device act as a
DHCP relaying agent. Thus, it forwards DHCP requests to your existing
DHCP server instead. Please enter your DHCP server’s IP Address in the
fields.

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CHAPTER 5: ROUTER CONFIGURATION

Static DHCP
Assignment

Figure 30 Static DHCP Assignment Screen

To assign a LAN client with a static IP Address, please do the following:
1 Enter the IP Address that you would like to lease and the client MAC
address in the fields appropriately.
The MAC Address must be entered as 6 hexadecimal pairs, for example
12-34-56-78-90-ab.
Click Apply to apply your changes. The device will now reboot.

Wireless Settings

DHCP Lease Table

51

Figure 31 DHCP Lease Table Screen

The DHCP Lease table screen list the client’s name, MAC Address, IP
Address and Expiration time which reflects the value specified in DHCP
server setting in “Unit Configuration”on this chapter.

Wireless Settings

The Wireless Settings menu provides options described in the following
sections.
To improve the security of your wireless network, 3Com recommends
that you:
1. Change the SSID from its default value
2. Enable Encryption
3. Enable Connection Control

52

CHAPTER 5: ROUTER CONFIGURATION

Configuration

Figure 32 Configuration Screen

Enable Wireless Networking
Use this check box to enable or disable the wireless section of your LAN.
When disabled, no wireless PCs can gain access to either the Internet or
other PCs on your Wired or Wireless LAN through this Router.
Country Domain
Please select your country from the drop-down list.
Wireless Mode
You may choose from the menu to let your wireless network to operate in
a 802.11b, 802.11g, SuperG, or Mixed 11b/11g which is the default.
Channel Selection
Select a number from the drop-down list to specify which Channel the
Router will transmit and receive on. If another access point or Router
nearby is using the same Channel as you, there will be a reduction in the
performance of your network. If this seems to be the case, you should
select a different channel number. Usually the Wireless computers will
scan to find the correct channel, but if they don't you must configure
them to use the same Channel number as the Router.

Wireless Settings

53

Choose the Auto option to automatically choose the clearest channel. The
Router will check for the clearest channel whenever it is rebooted,
powered up, and when the Clear Channel Select option is first applied.
Valid channels are country dependent. See “Regulatory Notices” on
page 137 for a list of channels approved by each country.
Service Area Name/SSID
This allows you to name your Wireless network. The Service Area
Name/SSID field will accept any alphanumeric string and has a maximum
length of 32 characters. Your Wireless computers must be configured
with exactly the same name or you will not establish a connection. The
Service Area Name may also be referred to as “ESSID” depending on your
networking vendor. By default the Router uses the name “3Com”. 3Com
recommends that you change the default name.
In order that your wireless computers can connect to the Router, you
must:
■

Use Infrastructure Mode, not Ad hoc Mode.

■

Have the same Service Area Name as the Router.

■

Have the same Channel number as the Router.

■

Use the same encryption type and keys as the Router.

■

Ensure that the PC is not included in the denied Wireless PCs list if
Connection Control is enabled. See page 59.

Enable Broadcast SSID
Disable this feature after you have installed your wireless network to
improve the security of your network. When the check box is checked,
the Router will broadcast the Service Area Name/SSID of your wireless
network, which reduces the security of your Router as it allows any
wireless client to see your wireless LAN.
If you have a wireless client that can detect all the available SSIDs in your
area, your client will not list the Router SSID unless this feature is enabled.
The clients will still be able to connect, provided that they are supplied
with the SSID.
3Com recommends that you install your wireless network with this
feature enabled and then disable it once you have set up the Router and
wireless clients.

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CHAPTER 5: ROUTER CONFIGURATION

Profile Support for NICs
You may save your wireless settings here by clicking Save Profile. Please
choose Save to Disk option when a dialog box opens. Thus, you may save
your wireless settings to an external file and later on use this file to import
the settings with supported 3Com Wireless Network Cards.
Encryption

When setting up wireless networks, it is important to remember that with
encryption disabled, anyone with a Wireless PC can eavesdrop on your
network. 3Com recommends that you get the network working with
encryption disabled first and then enable it as the last step. This will
simplify setting up your network.
The Router supports the following types of encryption:
■

WPA/WPA2/Mixed WPA WPA2 — Wi-Fi Protected Access (WPA) is a
subset of the IEEE 802.11i standard. Both WPA and WPA2 use
Temporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC)
and IEEE 802.11x. In addition to TKIP, WPA2 also uses Advanced
Encryption Standard (AES). The mixed mode will let you choose the
encryption mechanism interchangeably with either TKIP or AES.

■

WEP — Wireless Equivalent Privacy (WEP) is a 64 bit or 128 bit
encryption method with user configurable fixed keys.

■

WPA+Radius/WPA2+Radius/Mixed WPA WPA2 +Radius features using
of a RADIUS server with the pre-shared key authentication method.
(This should only be used when a RADIUS server is connected to the
Router).

WPA and WPA2 provides a higher level of security, provided by its longer
key and dynamic changes made to the key over time. 3Com recommends
that you use WPA with any clients which support it.
If you enable encryption on the Router, you must reconfigure your
wireless PCs to use exactly the same Encryption Type and Keys otherwise
the devices will not understand each other.
The encryption methods used by the Router secure data transmitted
through wireless communications between the Router and its wireless
clients. Enabling encryption has no security effect on data transmitted
through wired (Ethernet) connections or through your connections to the
Internet.

Wireless Settings

55

WEP
To enable WEP, select WEP from the Encryption Type.
Figure 33 Encryption — WEP

1 Please choose from 64 bits or 128 bits for the Encryption Strength.
2 Enter the Passphrase which can be up to 31 characters long and may
contain any alphanumeric characters in the field.
3 Click on Generate to generate 4 hex keys automatically. Virtually all
manufacturers support this scheme. Hexadecimal numbers are formed
from 0-9 and A-F. In 64 bit WEP, the passphrase will generate 4 different
keys. However, in 128 bit WEP, this method only generates 1 key which is
replicated for all 4 keys.

4 Manually assign each key. If you selected 64 bits encryption, enter 10 HEX
characters (0-F) for each key. If you selected 128 bits encryption,enter 26
HEX characters (0-F) for each key.
If you encounter any difficulty when you enable WEP ensure that you
check that each key on your wireless computer is exactly the same as each
key on your Router. In other words, Key number 1 on the Wireless computer
must have the same Hex number as Key number 1 on the Router, Key 2 on
the Wireless computer must match Key 2 on the Router and so on.

5 Current WEP Key: Select a key to be the active key. You can change the
selected key periodically to increase the security of your network.

56

CHAPTER 5: ROUTER CONFIGURATION

Click Save to save the setting.
WPA
To enable WPA, select WPA-PSK or WPA2-PSK from the Encryption
Type.
Figure 34 Encryption — WPA

1 Select either TKIP or AES as the Encryption Method.
2 Enter a passphrase between 8 to 63 characters long for the Pre-Shared
Key.
3 Enter the desired key renewal time in seconds for WPA Group Rekey
Interval.
Click Save to save the setting.
WPA with RADIUS
If you are using a RADIUS server in your network for authentication, you
may choose WPA or WPA2+ Radius from the Encryption Type.

Wireless Settings

57

Figure 35 Encryption — WAP/WPA2 with RADIUS

1 Select Encryption Method from the drop-down box.
2 Enter the frequency for Group Rekey Interval in seconds..
3 Enter the RADIUS Server IP address.
4 Enter the RADIUS Port number.
5 Enter your RADIUS KEY here.
Click Save to save the setting.
WMM

You can enable Wi-Fi Multimedia (WMM) support to help improve the
Quality of Service (QoS) for your wireless traffic.3Com recommends that
you leave the settings unchanged if you are not sure with your
configuration. Changing the values may lead to unexpected blockages of
traffic on your wireless LAN, and the blockages might be difficult to
diagnose.
WMM provides prioritized media access and is based on the Enhanced
Distributed Channel (EDCA) method. The WMM screen gives two
separate menus to set up the parameters; one is for Access Point and the
other one is for Wireless Stations.

58

CHAPTER 5: ROUTER CONFIGURATION

Figure 36 WMM Screen

Typically, voice and video traffic types are delay-sensitive, but are tolerant
of some frame losses.On the other hand, data traffic type is
delay-tolerable, but requires loss-free transmission. So you may adjust
theses parameters with regard to the characteristics of these types of
data to better manage your network flow.
AC (Access Category): It uses 4 different ACs, from high to low:
VO:Voice, VI: Video, BE:Best Effort, BK: Background
AIFS (Arbitrary Interframe Space): An Interframe Space for different
Access Category
TXOP (Transmission Opportunity): WMM (Wireless Multimedia)
Transmission Opportunity: defined by IEEE 802.11e, the TXOP is the
interval of time when a particular STA (station) has the right to initiate
transmissions.
ACM (Admission Mandatory): Advertised in the EDCA parameter set
element to indicate the admission control is required for each of the ACs.
EDCA AP Paramenters:
Theses values of AIFS, CWmin, and CWmax are announced by the AP via
beacon frames. The AP can adapt these parameters dynamically
depending on the network conditions. Basically, the smaller AIFS and
CWmin, the shorter the channel access delay for the corresponding

Wireless Settings

59

priority, and hence the more capacity share for a given traffic
condition.However, the probability of collisions increases when operating
with smaller CWmin. These parameters can be used in order to
differentiate the channel access among different priority traffic.
EDCA STA Parameters:
Each station maintains a Contention Window (CW), which is used to
select the random back off counter.The BC is determined as a random
integer drawn from a uniform distribution over the interval (0, CW).The
CW size is initially assigned CWmin, and increases when a transmission
fails, i.e., the transmitted data frame has not been acknowledged.After
any unsuccessful transmission attempt, another back off timer is
performed, with an upper bound of CWmax.This reduces the collision
probability in case there are multiple stations attempting to access the
channel.
CW min:
CW max:
AIFSN:

should be smaller for delay-sensitive data
should be smaller for delay-sensitive data
should be smaller for delay-sensitive data

TXOPLimit: These will allow multiple MAC frames consecutively as
long as the whole transmission time does not exceed the TXOP limit.So
keep it larger for delay-sensitive data.
ACM: Admission Mandatory; could be turned on to mandatory
execution of the contention control.
Connection Control

You can restrict certain wireless clients from accessing the router by
specifying their MAC address and enabling access restriction.

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CHAPTER 5: ROUTER CONFIGURATION

Figure 37 Connection Control Screen

To specify that only certain wireless computers can connect to the Router,
select allow/deny, and then enter the MAC addresses of the wireless
clients. You may enter a maximum of 64 PCs in the list.
Click Save to save your existing configurations or Cancel to discard all
changes.

Wireless Settings

Client List

61

Figure 38 Client List Screen

The Wireless Client List provides details on the devices that are connected
to the Wireless LAN. The list is only created when Wireless Networking is
enabled. For each device that is connected to the Wireless LAN, the MAC
address and Connection Speed of that device is displayed. As you
connect more devices to the Wireless LAN, the client list will grow to a
maximum of 64 (the maximum number of wireless devices that the
Router can support).
Advanced Wireless
Settings

The router provides some advanced wireless functionalities to let the
users better manage their wireless network.

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CHAPTER 5: ROUTER CONFIGURATION

Figure 39 Advanced Wireless Settings Screen

Authentication Type The default is set to Auto (Default), allows
either Open System or Shared Key authentication to be used. With Open
System authentication, the sender and the recipient do NOT use a WEP
key for authentication. With Shared Key authentication, the sender and
recipient use a WEP key for authentication.
Basic Rate The Basic Rate setting is not actually one rate of
transmission but a series of rates at which the Router can transmit. The
Router will advertise its Basic Rate to the other wireless devices in your
network, so they know which rates will be used. The Router will also
advertise that it will automatically select the best rate for transmission.
The default setting is Default, when the Router can transmit at all
standard wireless rates (1-2Mbps, 5.5Mbps, 11Mbps, 18Mbps, and
24Mbps). Other options are 1-2Mbps, for use with older wireless
technology, and All, when the Router can transmit at all wireless rates.
The Basic Rate is not the actual rate of data transmission. If you want to
specify the Router's rate of data transmission, configure the Transmission
Rate setting.
Transmission Rate The rate of data transmission should be set
depending on the speed of your wireless network. You can select from a
range of transmission speeds, or you can select Auto (Default) to have the
Router automatically use the fastest possible data rate and enable the

Wireless Settings

63

Auto-Fallback feature. Auto-Fallback will negotiate the best possible
connection speed between the Router and a wireless client. The default
value is Auto (Default).
Transmission Power (Transmit Power Control) The greater the
transmission power used, the larger the area a wireless network covers.
To minimize the likelihood of eavesdropping by unauthorized wireless
users, do not use more transmission power than necessary to cover the
range needed by your wireless network. Try using the Router at different
levels of transmission power, and determine how much power is needed
to reach the wireless client, such as a PC or access point, that is farthest
from the Router. Then select the appropriate level, Full (Default), Half,
Quarter, Eighth, or Min, from the drop-down menu. The default is Full
(Default).
CTS Protection Mode CTS (Clear-To-Send) Protection Mode should be
set to Auto (Default). The Router will automatically use CTS Protection
Mode when your Wireless-G products are experiencing severe problems
and are not able to transmit to the Router in an environment with heavy
802.11b traffic. This function boosts the Router's ability to catch all
Wireless-G transmissions but will severely decrease performance. If you
do not want to use CTS Protection Mode at all, select Disabled.
XR Mode The Extended Range mode can be enabled to further extend
the wireless coverage to eliminate dead spots or corners in your office.
Frame Burst Mode Enabling this option should provide your network
with greater performance, depending on the manufacturer of your
wireless products. If you are not sure how to use this option, keep the
default, Enabled.
Beacon Interval The default value is 100. The Beacon Interval value
indicates the frequency interval of the beacon. A beacon is a packet
broadcast by the Router to synchronize the wireless network.
DTIM Interval This value indicates the interval of the Delivery Traffic
Indication Message (DTIM). A DTIM field is a countdown field informing
clients of the next window for listening to broadcast and multicast
messages. When the Router has buffered broadcast or multicast
messages for associated clients, it sends the next DTIM with a DTIM
Interval value. Its clients hear the beacons and awaken to receive the
broadcast and multicast messages. The default value is 1.

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CHAPTER 5: ROUTER CONFIGURATION

Fragmentation Threshold This value specifies the maximum size for
a packet before data is fragmented into multiple packets. If you
experience a high packet error rate, you may slightly increase the
Fragmentation Threshold. Setting the Fragmentation Threshold too low
may result in poor network performance. Only minor reduction of the
default value is recommended. In most cases, it should remain at its
default value of 2346.
RTS Threshold Should you encounter inconsistent data flow, only
minor reduction of the default value, 2347, is recommended. If a
network packet is smaller than the preset RTS threshold size, the RTS/CTS
mechanism will not be enabled. The Router sends Request to Send (RTS)
frames to a particular receiving station and negotiates the sending of a
data frame. After receiving an RTS, the wireless station responds with a
Clear to Send frame to acknowledge the right to begin transmission. The
RTS Threshold value should remain at its default value of 2346.
Do not alter these parameters unless you understand the implications.
WDS

WDS (Wireless Distribution System) is comprised of a bridging and/or a
repeater mode. The Router supports the Wireless Distribution System
(WDS) repeater mode. WDS repeating enables one or more Access Points
to rebroadcast received signals to extend range and reach, though this
can affect the overall throughput of data.

Internet Settings

65

Figure 40 WDS Screen

To setup a WDS, make sure that the following conditions are met for all
of the linked APs:
1 Both AP's WDS should be enabled.
2 APs are configured with the same Channel, SSID and Encryptions.
3 Each AP should have a different IP Address.

Internet Settings

Before you can configure the Router, you need to know the IP
information allocation method used by your ISP. There are five different
ways that ISPs can allocate IP information, as described below:
1 PPPoA (PPP over ATM)
The ISP provides the IP addressing information for you to enter manually.
To configure the Router you will need to know the following:
■

User name

■

Password

■

Authentication Method

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CHAPTER 5: ROUTER CONFIGURATION

2 PPPoE
PPP over Ethernet, provides routing for multiple PCs, this mode is often
used for the DSL connection. To configure this function correctly, you should

obtain the information from your ISP.
3 Dynamic/Fixed IP in 1483 Bridge Mode
In this mode of connection, your ADSL router simply acts like a modem
but can also carry multiple upper-layer protocols such as IP, IPX, and
NetBIOS. Please consult your ISP for the necessary configuration
information.
4 IPoA (IP over ATM)
It is a technique which transmits IP packets over the ATM network. Please
consult your ISP for the necessary configuration information.
5 Bridging Mode
In this mode, your ADSL router simply acts like a modem when
connecting to the internet. Thus, you may have seperate DSL connections
behind via a computer or router. Enter the following parameters in the
configuration:
VPI: Virtual Path Identifier(from 0 to 255), which is assigned by your ISP.
VCI: Virtual Channel Identifier(from 32 to 65535), which is assigned by
your ISP.
Encapsulation Mode: Select from either VC or LLC.

Firewall

Virtual Servers

On the main frame of the Firewall setup screen is a menu with eight tabs:
Virtual Servers, Special Applications, DMZ, SPI, PC Privileges, Schedule
Rules, Content Filter, and URL Filter.
Selecting the Firewall option on the main menu displays the Virtual
Servers setup screen.

Firewall

67

Figure 41 Virtual Servers Screen

Virtual Server
Activating and configuring a virtual server allows one or more of the
computers on your network to function as a public server. For example,
one of your computers could be configured as an FTP server, allowing
others outside of your office network to download files of your choosing.
Or, if you have created a Web site, you can configure one of your
computers as a Web server, so that others can view your Web site.
To configure a virtual server:
1 Select an application from the drop-down menu or fill in the blank fields
to specify your own application.
2 The port(s) that will be used will be shown for a common application or
you may enter the port numbers required for that service if it is not
pre-defined.
3 Enter the last digit of the LAN server IP address.
4 Click Apply to apply the changes.
The port numbers are specified using a comma-separated list, with dash
to denote port number ranges. So for example, entering 2, 3, 5-7 would
cause ports 2, 3, 5, 6, and 7 to be activated.

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Special Applications

Figure 42 Special Applications Screen

Some software applications require special or multiple connections to the
Internet and these would normally be blocked by the firewall. For
example Internet Telephony or Video conferences require multiple
connections.
So that these special applications can work properly and are not blocked,
the firewall needs to be told about them. In each instance there will be a
trigger port and incoming port(s), where traffic on the trigger port tells
the firewall to open the incoming ports.
Each defined Special Application only supports a single computer user,
and up to32 Special Applications can be defined. Any incoming ports
opened by a Special Application trigger will be closed after five minutes
of inactivity.
To configure special applications:
1 Click Add to open the Special Applications screen.
2 Select an application from the drop-down menu or enter the application
name.
3 Enter the Triggered port and the forwarded range in the text boxes.
4 Select the Enabled box to make it activated.

Firewall

69

5 Click Apply to save the configuration and apply the changes.
The Router will automatically allow FTP and NetMeeting sessions. You do
not need to configure these as Special Applications.
Only one computer on your network can use the special application at
any one time.
DMZ

Figure 43 DMZ Screen

DMZ (De-Militarized Zone) Host is a computer without the protection of
the firewall. This feature allows a single computer to be exposed to
unrestricted 2-way communication from outside of your network. This
feature should be used only if the Virtual Server or Special Applications
options do not provide the level of access needed for certain applications.
Single DMZ
To configure one of your computers as a DMZ host, enter the IP address
of the computer in the DMZ Host IP Address, and then click Save/Apply.
Multiple DMZ
You may enable the multiple DMZ function if you have more than one
registered public IP assigned to your server. Please enter the Public IP

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CHAPTER 5: ROUTER CONFIGURATION

Address and the corresponding LAN IP Address in the fields and click Add
to add the Entry. Click Apply/Reboot to apply your settings.
SPI

Stateful Packet Inspection (SPI) inspects, and if required blocks packets at
the application layer. SPI also maintains TCP and UDP session information,
including timeouts and the number of active sessions, and provides the
ability to detect and prevent certain types of network attacks such as DoS
attacks.
Denial of Service (DoS) attacks are aimed at devices and networks with a
connection to the Internet. The goal is not to steal information, but to
disable a device or network so users no longer have access to network
resources.
To configure SPI information on your Router:
1 Select Firewall from the main menu, then select the SPI tab to display the
SPI screen:
Figure 44 SPI Screen

Intrusion Detection: Check on the box to enable the Stateful Packet
Inspection (SPI), Hacker Pattern detection and Denial of Services(DoS)
features to further guard your networks from internet attacks.

Firewall

71

Email Alert:: Use this feature if you want the router to send you an email
if a DoS attack has attempted.
Connection Policy: These settings determine the timeouts between the
router’s recognizing and blocking DoS attempts before allowing
legitimate traffic using these protocols to be permitted.
Do not adjust these settings unless you are confident in your reconfigured
settings.
ALG: Check this box if you use a SIP phone with the router.
PC Privileges

Figure 45 PC Privileges Screen

Select PC Privileges to display the PC Privilege setup screen.
Access from the local network to the Internet can be controlled on a
computer-by-computer basis. In the default configuration the Router will
allow all connected computers unlimited access to the Internet.
PC Privileges allows you to assign different access rights for different
computers on your network.

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To use access control for the computers:
1 Enter the PC’s description and the range of the ip addresses.
2 Select to bypass the URL or Content Filter if you would like the clients to
bypass the rules.(Please refer to the URL or Content Filter tab)
3 Please select to block specific services or protocols.
4 You may also block additional ports by listing the port range in the User
Defined Blocked Ports.
5 To apply a time schedule to the rule, set up a schedule rule on the
Scheduled Rules tab, and then select the named rule in the pull-down list.
6 Click Save to save the settings or Cancel to discard them.
To assign different access rights for different computers, click Add PC at
the PC Privileges screen. You can create up to 10 policies.
Schedule Rules

You can also schedule when PCs can access the Internet. By default, all
PCs can access the internet all day, every day. The Schedule Rules work in
conjuction with the PC Privileges so you can schedule when PCs can
access the Internet.
To add the schedule:

Firewall

73

Figure 46 The Schedule Rules Screen

1 Click Add Rule at the Schedule Rules screen.
2 Enter the Schedule name and give a brief description.
3 Check the appropriate check box for each day you want to block access,
and enter the times for each day in 24-hour clock format.
Content Filter

You can subscribe to the 3Com Content Filter Service, which enables you
to block or allow the URLs of a number of pre-defined categories.
The Router comes with a 14-day free trial of the 3Com Content Filter
Service. To activate the 14-day free trial of the service, you must first
register your Router at www.3com.com. To continue using the service after
the trial period, you must purchase the full 3Com Content Filter Service
(3CSBCFS).
URL filtering rules supersede content filtering rules. If the 3Com Content
Filter is blocking certain Web sites that you want to allow, you can add
these sites to URL Filter’s allow list.

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To activate Content Filtering:
1 Select Firewall from the main menu, then select the Content Filter tab.
The Content Filter screen displays.
Figure 47 Content Filter Screen

2 Make sure the Enable Content Filter check box is checked.
3 Select the Content Filter Server that you require from the drop-down list.
If you select custom entry, enter the server IP address in the text box.
4 Select the Server Timeout value in milliseconds. The default is 3000
milliseconds (3 seconds).
5 Select Allow or Deny for each displayed category, as required.
Click Save To Save The Changes and Apply to apply The Settings.
URL Filter

Select the URL Filter tab to set the websites that you want your clients to
be able or not able to access.

Firewall

75

Figure 48 The URL Filter Screen

To enable the URL Filtering, please do the following:
1 Check the Enable URL Filtering Function box to enable the URL
filtering.
2 Enter the URL or key words of the URL in the text field for your desired
website.
To filter a specific site, enter the URL for that site. For example, to stop
your users from browsing a site called www.badsite.com, enter
www.badsite.com or badsite.com in one of the fields.
If badsite.com has multiple sub-domains, such as this.badsite.com and
that.badsite.com then you can either:
■

Block them individually by entering this.badsite.com in one field
and that.badsite.com in another.

■

or

■

Block them by entering the keyword badsite.com into one of the
fields. This will block all URLs containing the string badsite.com. As
well as blocking this.badsite.com and that.badsite.com, the
keyword badsite.com would block searches that mentioned
badsite.com in their domain name, for example
www.notabadsite.com.

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CHAPTER 5: ROUTER CONFIGURATION

To filter a generic keyword enter it into one of the fields. You should
exercise caution when choosing a keyword as many keywords are
contained within other words. For example, filtering the word sex would
filter the following example URLs:
■

www.sussex.com

■

www.thisexample.com

You can filter up to 30 keywords and URLs.
3 Please select from the mode to whether allow or deny the URL.Since URL
Filter supersedes Content Filter, you may list your allowed URL here.
The Router filters all traffic from domains that have been blocked using
the URL filter. If you need to access an external mail server, FTP server or
other named device outside your network, you must list it in one of the
allow fields.
Computers that should not be subject to URL filtering can be excluded by
listing them as the full access PC's IP Addresses in the Filter Policy Tab.

System Tools

The main frame of the System Tools screen includes four administration
items: Restart, Time Zone, Configuration, and Upgrade .

System Tools

Restart

77

Figure 49 Restart Screen

If your Router is not operating correctly, you can choose to restart the
Router by selecting Restart the Router, simulating the effect of power
cycling the unit. No configuration information will be lost but the log files
will be erased. This function may be of use if you are experiencing
problems and you wish to re-establish your Internet connection. Any
network users who are currently accessing the Internet will have their
access interrupted whilst the restart takes place, and they may need to
reboot their computers when the restart has completed and the Router is
operational again.

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CHAPTER 5: ROUTER CONFIGURATION

Time Zone

Figure 50 Time Zone Screen

Choose the time zone that is closest to your actual location. The time
zone setting is used by the system clock when displaying the correct time
in the log files.
If you use Daylight saving tick the Enable Day Light savings box, and then
click Save.
The Router reads the correct time from NTP servers on the Internet and
sets its system clock accordingly. The Daylight Savings option merely
advances the system clock by one hour. It does not cause the system
clock to be updated for daylight savings time automatically.

System Tools

Configuration

79

Figure 51 Configuration Screen

Select the Configuration tab to display the Configuration screen.
Backup Configuration
Click BACKUP to save the current Router configuration. You will be
prompted to download and save a file to disk.
Restore Configuration Data
If you want to reinstate the configuration settings previously saved to a
file, press Browse to locate the backup file on your computer, and then
click RESTORE to copy the data into the Router's memory.
The password will remain unchanged.
Reset to Factory Default
If you want to reset the settings on your Router to those that were loaded
at the factory, click RESET. You will lose all your configuration changes.
The Router LAN IP address will revert to 192.168.1.1, and the DHCP
server on the LAN will be enabled. You may need to reconfigure and
restart your computer to re-establish communication with the Router.

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Upgrade

Figure 52 Upgrade Screen

The Upgrade facility allows you to install on the Router any new releases
of system software that 3Com may make available. To install new
software, you first need to download the software from the 3Com
support web site to a folder on your computer. Once you have done this,
select Browse to tell your web browser where this file is on your
computer, and then click Apply. The file will be copied to the Router, and
once this has completed, the Router will restart. Although the upgrade
process has been designed to preserve your configuration settings, it is
recommended that you make a backup of the configuration beforehand,
in case the upgrade process fails for any reason (for example, the
connection between the computer and the Router is lost while the new
software is being copied to the Router).
The upgrade procedure can take up to four minutes, and is complete
when the Alert LED has stopped flashing and is permanently off. Make
sure that you do not interrupt power to the Router during the upgrade
procedure; if you do, the software may be corrupted and the Router may
not start up properly afterwards. If the Alert LED comes on continuously
after a failed upgrade, refer to Chapter 6, “Troubleshooting”.

Advanced

Advanced

81

Selecting Advanced from the main menu displays the following seven
tabs in your Web browser window: Static Route, RIP, DDNS, Quality of
Service, ProxyARP, Port Mapping, and IPSec.

Static Route

The Router supports static route functionality. Select the Static Route tab
to display the screen.
Figure 53 Static Route screen

Please enter the following values in the box respectively to specify a static
route:

RIP

■

Network Address — the network address of the route. If network
address and subnet mask are both set to 0.0.0.0, this is the default
route.

■

Subnet Mask — the subnet mask of the route. If network address and
subnet mask are both set to 0.0.0.0, this is the default route.

■

Gateway — the gateway used to route data to the network specified
by the network address.

■

The network interface associated with the IP address.

The Router supports the Routing Information Protocol (RIP). RIP allows
you to set up routing information on one RIP enabled device, and have

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that routing information replicated to all RIP enabled devices on the
network. LAN and WAN interfaces can be configured independently of
each other.
Select the RIP tab to display the screen.
Figure 54 RIP screen

Setting Up RIP
Check the Enable RIP Mode check box if you want the Router to start
routing via RIP.
1 Select either 1 (for RIPv1) or 2 (for RIPv2) from the Version drop-down list.

2 Select from either Passive or Active in the Operation drop-down list. If you
select Active, the Router transmits RIP update information to other RIP
enabled devices. If you select Passive, the Router only receives RIP update
messages.
3 Check to Enable the process.
DDNS

Dynamic Domain Name Server (DDNS) enables you to map a static
domain name to a dynamic IP address. The Router supports five DDNS
providers, TZO.com, DYNDNS.org, Zoneedit, NO-IP, DtDns. Before you
can set up DDNS, you must obtain an account, password and static
domain name from your DDNS provider. DDNS is disabled by default.

Advanced

83

To set up DDNS:
1 Select Advanced from the main menu, then select the DDNS tab. The
DDNS screen displays.
Figure 55 DDNS screen

2 Select a DDNS Service provider from the drop-down list. This can be
TZO.com, DynDNS.org, DtDns, NOIP or Zoneedit.com.
TZO.com
If you select TZO.com:
1 In the Domain Name text box, enter the domain name.
2 In the Username/E-mail text box, enter the account name.
3 In the Key text box, enter the account password.
4 In the Refresh Time box, enter how often you want the service to
automatically refresh, in days. The default is three days.
5 Click Apply to make this service active.
DynDNS.org/DtDns.com/Zoneedit.com
If you select DYNDNS.org, DtDns, or Zoneedit.com:
1 In the Host Name text box, enter the host name.
2 In the Username text box, enter the account name.

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3 In the Password text box, enter the account password.
4 Click add to add your DDNS.
NOIP.com
1 In the Host Name text box, enter the host name.
2 In the E-mail text box, enter the account name.
3 In the Password text box, enter the account password.
4 Click save to save the changes and Apply to make this service active.
Quality of Service

Figure 56 QoS Screen

This screen lists the QoS classifiers or policy. A classifier groups upstream
traffic into data flows according to specific criteria such as the source
addresses, destination addresses, source ports or destination ports. The
policy also assigns a specific Priority queue, DSCP mark or ToS value.
Please enter your settings into the fields provided.
Please do not alter any settings unless you are an experienced network
administrator.
Proxy ARP

Proxy ARP is a variation of Address Resolution Protocol (ARP), in which an
intermediate device (in this case, the Router) sends an ARP response on
behalf of an end node to the requesting host. Proxy ARP can help

Advanced

85

decrease bandwidth consumption on slow-speed WAN links and allows a
site to use a single IP address for two physical networks.
To use proxy ARP, you must have a range of static IP addresses assigned
by your ISP.
Figure 57 The Proxy ARP Screen

To configure Proxy ARP:
1 On the menu, click Advanced.
2 Click the Proxy ARP tab.
3 Select the Enable Proxy ARP check box.
4 Enter the static IP addresses that your ISP has given to you.
5 Click Save to save your changes.
IPSec

Internet Protocol Security (IPSec) is a standards-based VPN that offers
flexible solutions for secure data communications across a public network
like the Internet. The Virtual Private Network (VPN) is a popular
technology used for communications between two networking sites
without the expense of leased site-to-site lines.

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Figure 58 The IPSec Screen

Below is a description of the basic configuration parameters:
IPSec Connection Name: Please enter a name to define your
connection.
Remote IPSec Gateway Address: This is the static WAN IP address or
URL of the remote IPSec router.
Tunnel Access from Local IP Addresses: Select if you want to create a
tunnel access for a single computer or a subnet.
IP Address/Subnetmask for VPN: If you choose a single computer from
the above, please enter the local computer’s IP Address; otherwise, enter
a subnet and the corresponding subnetmask in the field provided.
Tunnel Access from Remote IP Addresses: Select if you want to create
a tunnel access with the remote site for a single computer or a subnet.
IP Address/Subnetmask for VPN: If you choose a single computer from
the above, please enter the remote computer’s IP Address; otherwise,
enter a subnet and the corresponding subnetmask in the field provided.

Advanced

87

Key Exchange Method: Select IKE or Manual from the drop-down list
box. Manual is useful for troubleshooting when you have problems using
IKE key management.
Pre-Shared Key: Type your pre-shared key in this field. Enter 8 to 31
case-sensitive ASCII characters. Both routers which would build a VPN
tunnel must use the same pre-shared key.
Port Mapping

Port Mapping supports multiple ports to PVC and bridging groups. Each
group will perform as an independent network. To support this feature,
you must create mapping groups with appropriate LAN and WAN
interfaces using the Add button. The Remove button will remove the
grouping and add the ungrouped interfaces to the Default group.
Figure 59 The Port Mapping Screen

To create a new mapping group:
Enter the Group name and select interfaces from the available interface
list and add it to the grouped interface list using the arrow buttons to
create the required mapping of the ports. The group name must be
unique. A maximum 16 entries can be configured.
Click Apply to make the changes effective immediately.

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CHAPTER 5: ROUTER CONFIGURATION

Do not alter any settings unless you are an experienced network
administrator.

Management

The management Screen lets you administer your routers with features
such as System Log, SNMP, UPnP, Trust Station, Remote Management,
and Utility.
Syslog

If you have a syslog server on the network, you can configure the Router
Point to send the device logs to the server.
You may need to configure the syslog server to accept logs from the
Router.

Management

89

Figure 60 The System Log Screen

To view the current logs:
1 Click the View Log button.
To enable the system log:
1 Check Enable System Log box.
2 Select the drop-down menu for a list of available types of logging
activities.
3 Select the Display Level for a list of available types of logging display.
Select Select on the Mode for logging mode: Local, Remote, or Both. For
the remote logging, enter the remote server’s IP address and Port number
for receiving the logs.
SNMP

Simple Network Management Protocol (SNMP) is the protocol used for
exchanging management information between network devices.

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Figure 61 The SNMP Screen

Click Enable/Disable to enable/disable the agent.
To Configure the SNMP:
1 Type the Read Community, which is the password for the incoming Get
and GetNext requests from the management station.

2 Type the Set Community, which is the password for incoming Set requests
from the management station.
3 Type the System Name for the program.
4 Type the System Location for the program.
5 Type the System Contact for the Contact person’s name.
6 Type the IP Address of the station/device for sending your SNMP traps to.
7 Click Apply.
UPnP

Universal Plug and Play (UPnP) is a distributed, open networking standard
that uses TCP/IP for simple peer-to-peer network connectivity between
devices. UPnP compatible devices can dynamically join a network and
learn about other devices on the network. UPnP hardware will be shown
in the Network Connections folder in Windows XP.

Management

91

Figure 62 The UPnP Screen

Check UPnP Enabled to activate UPnP.
Trusted Station

Figure 63 The Trusted Station Screen

The Trusted Station Screen lets you add/remove the MAC address of the
stations which can access the web administration.

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Remote Management

It is possible to administer the Router remotely. Select one of the
following options for remote administration:
Figure 64 The Remote Management Screen

■

Disable Remote Administration — This option is set as default.

■

Enable administration from a single Internet Host — Only the
specified Host IP Address can manage the Router. Any other users will
be rejected.

■

Enable administration from a whole subnet — This option allows a
number of users within the specified Host Network Address and
Subnet Mask to administer the Router.

■

Enable administration from any Internet Host — This option allows
any host to access the administration pages.

To remotely administer your Router, enter http://xxx.xxx.xxx.xxx:8000
in the location bar of the browser running on the remote computer,
where xxx.xxx.xxx.xxx is the Internet IP address of the Router. You may
then login using the administration password.
Your Internet IP address can be found at the bottom of the screen.
Utility

The utility screen will let you execute some commands to test your
internet connections.

Diagnostics

93

Figure 65 The Utility Screen

To use the utility:
1 Select commands that you would like to run from the menu.
2 Enter the IP Address or Domain Name in the field provided.
3 Click Start to start executing the command.
4 The results will be shown on the screen below.

Diagnostics

The Diagnostics Screen lets you diagnose your DSL connection to the
internet and your wired and wireless LAN networkings. Click on the Test
button to start testing.

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Figure 66 The Diagnostics Screen

Device Info

The Device Info Settings menu provides the following options:

Device Info

Summary

95

Figure 67 The Summary Screen

The Summary screen is used to display the information of your LAN
status.
WAN

Figure 68 The WAN Screen

The WAN Status Screen is used to display the information of your DSL
Connection Status.

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Statistics

Figure 69 The Statistics Screen

The Statistics Screen is used to display the information of your
LAN/WAN/ATM/ADSL Connection Statistics. Click on the button for each
connection device for more detailed information.

Device Info

Route

Figure 70 The Route Screen

The Route Screen is used to display the routing status/information.
ARP

Figure 71 The ARP Screen

The ARP screen is used to display the ARP status.

97

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Support/Feedback

Selecting Support/Feedback from the main menu displays the Status,
Logs, Routing Table, and Syslog screens in your Web browser window.

Support/Feedback

Selecting Support/Feedback from the main menu displays the Support
and Feedback screens.

Support

Figure 72 Support Screen

Selecting the Support option on the main menu displays the support links
screen, which contains a list of Internet links that provide information and
support concerning the Route.

Support/Feedback

Feedback

99

Figure 73 Feedback Screen

Selecting the Feedback option displays the Feedback screen and allows
you to provide feedback to 3Com on the operation of your Router. This
screen should not be used to obtain technical support.

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6
Basic Connection
Checks

Browsing to the
Router
Configuration
Screens

TROUBLESHOOTING

■

Check that the Router is connected to your computers, and that all
the equipment is powered on. Check that the LAN Status and Sync
DSL Status LEDs on the Router are illuminated, and that any
corresponding LEDs on NIC are also illuminated.

■

Ensure that the computers have completed their start-up procedure
and are ready for use. Some network interfaces may not be correctly
initialized until the start-up procedure has completed.

■

If the link status LED does not illuminate for a port that is connected,
check that you do not have a faulty cable. Try a different cable.

If you have connected your Router and computers together but cannot
browse to the Router configuration screens, check the following:
■

Confirm that the physical connection between your computer and the
Router is OK, and that the LAN Status LEDs on the Router and NIC are
illuminated and indicating the same speed (10Mbps or 100Mbps).
Some NICs do not have status LEDs, in which case a diagnostic
program may be available that can give you this information.

■

Ensure that you have configured your computer as described in
Chapter 3, Setting Up Your Computers. Restart your computer while it
is connected to the Router to ensure that your computer receives an IP
address.

■

When entering the address of the Router into your web browser,
ensure that you use the full URL including the http:// prefix (e.g.
http://192.168.1.1).

■

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 Proxy Server option is unchecked.

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CHAPTER 6: TROUBLESHOOTING

Connecting to the
Internet

Forgotten Password
and Reset to
Factory Defaults

■

If you cannot browse to the Router, use the winipcfg utility in
Windows XP to verify that your computer has received the correct
address information from the Router. From the Start menu, choose
Run and then enter cmd. Check that the computer has an IP address of
the form 192.168.1.xxx (where xxx is in the range 2-254), the subnet
mask is 255.255.255.0, and the default Router is 192.168.1.1 (the
address of the Router). If these are not correct, use the Release and
Renew functions to obtain a new IP address from the Router. Under
Windows 2000,XP,and Vista, use the ipconfig/all command-line utility
to perform the same functions.

■

If you still cannot browse to the Router, then use the Discovery
program on the accompanying CD-ROM as described in Appendix A.

If you can browse to the Router configuration screens but cannot access
sites on the Internet, check the following:
■

Confirm that the physical connection between the Router and the
broadband connection is OK, and that the Sync DSL LED and Data DSL
LED on the Router are illuminated. If the Sync DSL LED is off, check the
physical connection path to the ADSL line. If the Sync DSL LED is on,
but the Data DSL LED is off, confirm the login details are correct and
the ADSL service is available (contact your ISP for the status)

■

Confirm that ADSL filter is connected.

■

Ensure that you have entered the correct information into the Router
configuration screens as required by your Internet Service Provider. Use
the “Internet Settings” screen to verify this.

■

Check that the PPPoE, PPPoA or PPTP user name, password and
service name are correct, if these are required. Only enter a PPPoE
service name if your ISP requires one.

■

Ensure that your computers are not configured to use a Web proxy.
On Windows computers, this can be found under Control Panel >
Internet Options > Connections.

If you can browse to the Router configuration screen but cannot log on
because you do not know or have forgotten the password, follow the
steps below to reset the Router to it’s factory default configuration.
CAUTION: All your configuration changes will be lost, and you will need
to run the configuration wizard again before you can re-establish your

Wireless Networking

103

Router connection to the Internet. Also, other computer users will lose
their network connections whilst this process is taking place, so choose a
time when this would be convenient.
Here is how you may use the reset button:
1 Use the tip of a pen.
2 Press and hold the reset button at the rear panel of the device for about 5
seconds and release. The LEDs will start blinking.
3 Wait until the Alert Led stops flashing the red light when the device has
completed the Power On Self Test.
4 Now you may connect your computer to one of the LAN ports of the
device and browse to:
http://192.168.1.1
and run the configuration wizard. You may need to restart your computer
before you attempt this.
5 When the configuration wizard has completed, you may reconnect your
network as it was before.

Wireless
Networking

■

Ensure that you have an 802.11b or 802.11g wireless adapter for
each wireless computer, and that it is correctly installed and
configured. Verify that each Wireless computer has either Windows
95 or higher or MAC OS 8.5 or higher.

■

Verify that your wireless computers are configured to work in
Infrastructure mode and not Ad Hoc mode. The Router contains an
Access Point that is designed to operate in Infrastructure mode. Ad
Hoc mode is not supported by the Router.

■

If you have a wired and a wireless NIC in the same computer, ensure
that the wired NIC is disabled.

■

Check the status of the Router Wireless LED, it should be lit if wireless
is enabled and will flash when there is wireless activity. If not lit go to
“Wireless Settings” and enable wireless networking.

■

Ensure that the TCP/IP settings for all devices are correct.

■

Ensure that the Wireless Clients are using the same SSID or Service
Area Name as the Router. The SSID is case-sensitive

104

CHAPTER 6: TROUBLESHOOTING

■

Ensure that the encryption method and level that you use on your
clients are the same as those configured on the Router.

■

Ensure that you have the Wireless computer enabled in the list of
allowed MAC addresses if you are using Wireless Connection control
on the Router.

■

If you are having difficulty connecting or are operating at a low speed
try changing the antenna positions on the rear of the Router. For more
effective coverage you can try reorientating your antennae. Place one
antenna vertically and one horizontally to improve coverage.
Additionally consider moving the wireless computer closer to the
Router to confirm that the building structure or fittings are not
adversely affecting the connectivity. If this resolves the problem
consider relocating the Wireless computer or the Router, or trying a
different channel on the Router.

■

Sources of interference: The 2.4Ghz ISM band is used for 802.11b and
802.11g. This is generally a licence free band for low power
applications, and you may have other devices at your location that
operate in this frequency band. You should take care to ensure that
there are no devices like microwave ovens for example close to the
Router or wireless computers as this could affect receiver sensitivity
and reduce the performance of your network. If you are unsure try
relocating both the wireless computers and the Router to establish
whether this problem exists.

■

Most wireless computer Adapters will scan the channels for the
wireless Router. If a wireless computer has not located the Router then
try initiating a search manually if the client software supports this
feature or manually set the channel on your wireless computer to
correspond to the Router channel number. Please refer to your
Wireless computer adapter documentation and vendor to do this.

■

Speed of connection: The 802.11b and 802.11g standards will
automatically choose the best speed depending on the quality of your
connection. As the signal quality weakens then the speed falls back to
a lower speed. The speeds supported by 802.11g are 54 Mbps,
48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, and 6 Mbps. The
speeds supported by 802.11b are 11 Mbps, 5.5 Mbps, 2 Mbps and
1 Mbps. In general the closer you are to the Router the better the
speed. If you are not achieving the speed you had anticipated then try
moving the antenna on the Router or moving the Wireless computer
closer to the Router. In an ideal network the Router should be located
in the centre of the network with Wireless computers distributed

Power LED or Power Adapter OK LED Not Lit

105

around it. Applications are generally available with the computer
wireless card to carry out a site survey. Use this application to find the
optimal siting for your wireless computer. Consult your Computer
Card documentation and vendor for more details.

Power LED or
Power Adapter OK
LED Not Lit

■

Check that your Router is receiving power by looking at the status of
the Power LED on the front panel and the Power Adapter OK LED on
the rear panel:
■
■

■

■

Replacement Power
Adapters

If both LEDs are lit green then the unit is receiving power.
If both LEDs are unlit then no power is being supplied to the unit.
Check that the power adapter is plugged into a working mains
outlet and that the mains outlet is supplying power. If the mains
socket is supplying power then the power adapter or power
adapter connection may be faulty. See “Replacement Power
Adapters” below.
If the Power Adapter OK LED is lit but the Power LED is unlit then
there may be a fault with your unit. Contact 3Com Technical
Support.

Check that you are using the correct power adapter for your Router.
You should only use the power adapter supplied with your Router.

If both the Power Adapter OK LED and Power LED are off, check your
power adapter connection. If the mains outlet is working and is capable
of supplying power to other devices, contact 3Com Technical Support
and ask for a replacement power adapter. Please quote the power
adapter part number shown on the OfficeConnect power adapter you are
using.
Alternatively, quote the part number for your region:
Power Adapter Part Numbers
Part Number

Region

3C15VUK

UK

3C15VME

European

3C15VUS

US

3C15VAA

Asia

106

CHAPTER 6: TROUBLESHOOTING

Alert LED

Recovering from
Corrupted Software

The Alert LED will flash when the Router unit is first powered up while
the system software checks the hardware for proper operation. Once the
Router has started normal operation, the Alert LED will go out.
■

If the Alert LED does not go out following start up, but illuminates
continuously, this indicates that the software has detected a possible
fault with the hardware. Remove power from the Router, wait 10
seconds and then re-apply power. If the Alert LED comes on
continuously again, then a fault has been detected. Locate the copy of
the Router software on the accompanying CD-ROM or 3Com web site
(http://www.3com.com) and upload it to the Router to see if this
clears the fault (refer to “Recovering from Corrupted Software”
below). If this does not fix the problem, contact your supplier for
further advice.

■

During normal operation, you may notice the Alert LED lighting briefly
from time to time. This indicates that the Router has detected a hacker
attack from the Internet and has prevented it from harming your
network. You need take no specific action on this, unless you decide
that these attacks are happening frequently in which case you may
wish to discuss this with your ISP. The Router logs such attacks, and
this information is available through the Status and Logs screens.

If the Alert LED remains permanently on following power-up, it is possible
that the system software has become corrupted. In this condition, the
Router will enter a “recovery” state; DHCP is disabled, and the LAN IP
address is set to 192.168.1.1. Follow the instructions below to upload a
new copy of the system software to a Router unit in this state.
Ensure that one of your computers has a copy of the new software image
file stored on its hard disk or available on CD-ROM.
The latest software is available on 3Com’s Web site at:
http://www.3com.com
1 Remove power from the Router and disconnect all your computers,
except for the one computer with the software image.
2 You will need to reconfigure this computer with the following static IP
address information:

Frequently Asked Questions

■

IP address: 192.168.1.2

■

Subnet mask: 255.255.255.0

■

Default Router address: 192.168.1.1

107

3 Restart the computer, and re-apply power to the Router.
4 Using the Web browser on the computer, enter the following URL in the
location bar:
http://192.168.1.1.

This will connect you to the Microcode Recovery utility in the Router.
5 Follow the on-screen instructions. Enter the path and filename of the
software image file.
6 When the upload has completed, the Router will restart, run the self-test
and, if successful, resume normal operation. The Alert LED will go out.
7 Refer to the Installation Guide to reconnect your Router with your ADSL
service and the computers in your network. Do not forget to reconfigure
the computer you used for the software upload.
If the Router does not resume normal operation following the upload, it
may be faulty. Contact your supplier for advice.

Frequently Asked
Questions

How do I reset the Router to Factory Defaults?
See “Forgotten Password and Reset to Factory Defaults” on
page 102.
How many computers on the LAN does the Router support?
A maximum of 253 computers on the LAN are supported. Please
note that the performance will degrade with increase number of
users.
How many wireless clients does the Router support?
A maximum of 128 wireless clients are supported.
There are only 4 LAN ports on the Router. How are additional computers
connected?

108

CHAPTER 6: TROUBLESHOOTING

You can expand the number of connections available on your LAN
by using hubs, switches and wireless access points connected to
the Router. 3Com wireless access points and OfficeConnect hubs
and switches provide a simple, reliable means of expanding your
network; contact your supplier for more information, or visit:
http://www.3com.com
Does the Router support virtual private networks (VPNs)?
The Router supports VPN passthrough, which allows VPN clients on
the LAN to communicate with VPN hosts on the Internet. It is also
possible to set up VPN hosts on your LAN that clients elsewhere on
the Internet can connect to, but this is not a recommended
configuration.
Where can I download software updates for the Router?
Updates to the Router software are posted on the 3Com support
web site, accessible by visiting:
http://www.3com.com
What other online resources are there?
The 3Com Knowledgebase at:
http://knowledgebase.3com.com
is a database of technical information covering all 3Com products.
It is updated daily with information from 3Com technical support
services, and it is available 24 hours a day, 7 days a week.

3Com Warranty and
Support Services

Before you contact 3Com for warranty support, whenever possible,
please first register your product at
http://eSupport.3com.com/

Registration helps us to provide faster service when you contact us.
To ensure that we use your time wisely, please be prepared to provide us
with information on what you have done already to try to solve the
problem, as well as the following details:

3Com Warranty and Support Services

109

Warranty support:
■

Requestor contact details

■

3C part number

■

Firmware or software version of the 3Com product and operating
system used

■

Description of the problem or failure

■

Serial number of the product

■

Ship-to address, with on-site contact (required for Return Materials
Authorizations)

Contract services:
■

The same information as requested above for Warranty support

■

Your 3Com GSO Master Contract Number
OR your 3Com GSO Site-Specific Contract Number

Any service requested will be validated according to the specific
entitlements of the product warranty or 3Com service contract.
For the most up-to-date World Wide 3Com Service contact information
(telephone numbers, URLs, or email address) for your region, please visit:
http://csoweb4.3com.com/contactus/
If your product came with a Safety and Support brochure, you can also
refer to the Support section for 3Com regional contact numbers, URLs,
and email address.

110

CHAPTER 6: TROUBLESHOOTING

A
Running the
Discovery
Application

USING DISCOVERY

3Com provides a user-friendly Discovery application for detecting the
Router on the network.

Windows Installation
(95/98/2000/Me/NT/
XP)
1 Insert the Router CD-ROM in the CD-ROM drive on your computer. A
menu will appear; select Router Discovery.
Discovery will find the Router even if it is unconfigured or misconfigured.
Figure 74 Discovery Welcome Screen

2 When the Welcome screen is displayed click on Next and wait until the
application discovers the Routers connected to your LAN.

112

APPENDIX A: USING DISCOVERY

Figure 75 Discovered Router Screen

3 Figure 76 shows an example Discovered Devices screen. Highlight the
Router by clicking on it, and press Next.
Figure 76 Discovery Finish Screen

4 Click on Finish to launch a web browser and display the login page for
the Router.

B

IP ADDRESSING

The Internet
Protocol Suite

The Internet protocol suite consists of a well-defined set of
communications protocols and several standard application protocols.
Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the
most widely known and is a combination of two of the protocols (IP and
TCP) working together. TCP/IP is an internationally adopted and
supported networking standard that provides connectivity between
equipment from many vendors over a wide variety of networking
technologies.

Managing the
Router over the
Network

To manage a device over the network, the Router must be correctly
configured with the following IP information:

IP Addresses and
Subnet Masks

■

An IP address

■

A Subnet Mask

Each device on your network must have a unique IP address to operate
correctly. An IP address identifies the address of the device to which data
is being sent and the address of the destination network. IP addresses
have the format n.n.n.x where n is a decimal number between 0 and 255
and x is a number between 1 and 254 inclusive.
However, an IP Address alone is not enough to make your device operate.
In addition to the IP address, you need to set a subnet mask. All networks
are divided into smaller sub-networks and a subnet mask is a number
that enables a device to identify the sub-network to which it is
connected.

114

APPENDIX B: IP ADDRESSING

For your network to work correctly, all devices on the network must have:
■

The same sub-network address.

■

The same subnet mask.

The only value that will be different is the specific host device number.
This value must always be unique.
An example IP address is ‘192.168.1.8’. However, the size of the network
determines the structure of this IP Address. In using the Router, you will
probably only encounter two types of IP Address and subnet mask
structures.
Type One
In a small network, the IP address of ‘192.168.1.8’ is split into two parts:
■

Part one (‘192.168.1’) identifies the network on which the device
resides.

■

Part two (‘.8’) identifies the device within the network.

This type of IP Address operates on a subnet mask of ‘255.255.255.0’.
See Table 3 for an example about how a network with three computers
and a Router might be configured.
Table 3 IP Addressing and Subnet Masking
Table 1
Device

IP Address

Subnet Mask

PC 1

192.168.1.8

255.255.255.0

PC 2

192.168.1.33

255.255.255.0

PC 3

192.168.1.188

255.255.255.0

Router

192.168.1.72

255.255.255.0

Type Two
In larger networks, where there are more devices, the IP address of
‘192.168.1.8’ is, again, split into two parts but is structured differently:
■

Part one (‘192.168’) identifies the network on which the device
resides.

■

Part two (‘.1.8’) identifies the device within the network.

This type of IP Address operates on a subnet mask of ‘255.255.0.0’.

How does a Device Obtain an IP Address and Subnet Mask?

115

See Table 4 for an example about how a network (only four computers
represented) and a Router might be configured.
Table 4 IP Addressing and Subnet Masking

How does a Device
Obtain an IP
Address and Subnet
Mask?

DHCP Addressing

Device

IP Address

Subnet Mask

PC 1

192.168.1.8

255.255.0.0

PC 2

192.168.201.30

255.255.0.0

PC 3

192.168.113.155

255.255.0.0

PC 4

192.168.002.230

255.255.0.0

Router

192.168.002.72

255.255.0.0

There are three different ways to obtain an IP address and the subnet
mask. These are:
■

Dynamic Host Configuration Protocol (DHCP) Addressing

■

Static Addressing

■

Automatic Addressing (Auto-IP Addressing)

The Router contains a DHCP server, which allows computers on your
network to obtain an IP address and subnet mask automatically. DHCP
assigns a temporary IP address and subnet mask which gets reallocated
once you disconnect from the network.
DHCP will work on any client Operating System such as Windows® 95,
Windows 98 or Windows NT 4.0. Also, using DHCP means that the same
IP address and subnet mask will never be duplicated for devices on the
network. DHCP is particularly useful for networks with large numbers of
users on them.

Static Addressing

Auto-IP Addressing

You must enter an IP Address and the subnet mask manually on every
device. Using a static IP and subnet mask means the address is
permanently fixed.
Network devices use automatic IP addressing if they are configured to
acquire an address using DHCP but are unable to contact a DHCP server.
Automatic IP addressing is a scheme where devices allocate themselves
an IP address at random from the industry standard subnet of
169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate

116

APPENDIX B: IP ADDRESSING

themselves the same address, the conflict is detected and one of the
devices allocates itself a new address.
Automatic IP addressing support was introduced by Microsoft in the
Windows 98 operating system and is also supported in Windows 2000.

C

TECHNICAL SPECIFICATIONS

This section lists the technical specifications for the OfficeConnect ADSL
Wireless 108Mbps 11g Firewall Router.

ADSL Wireless 11g
108Mbps Firewall
Router

Interfaces
ADSL modem connection — Modem RJ-11 port
LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports
(10BASE-T/100BASE-TX)
WLAN Interfaces
Standard IEEE 802.11g and Super G(108Mbps), Direct Sequence Spread
Spectrum (DSSS)
Transmission rate: 108Mbps and 54Mbps, automatic fallback to 48, 36,
24, 18, 12, or 6 Mbps
Maximum channels: 14
Range up to 304.8m (1000ft)
Frequency: (US/Canada/Europe) 2.400-2.4835 GHz
Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm;
54 Mbps -66 dBm typical
Modulation: CCK, BPSK, QPSK, OFDM
Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power: 18dBm
Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 11bps, automatic fallback to 5.5, 2, or 1 Mbps
Maximum channels: 14
Range up to 304.8m (1000ft)
Frequency: (US/Canada/Europe) 2.400-2.4835 GHz
Sensitivity: 1, 2, 5.5 Mbps: -85 dBm; 11 Mbps -82 dBm typical
Modulation: CCK, BPSK, QPSK, OFDM

118

APPENDIX C: TECHNICAL SPECIFICATIONS

Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power 18dBm
Operating Temperature
0 °C to 40 °C (32 °F to 105 °F)
Power
7VA, 23.9 BThU/hr
Humidity
0% to 90% (non-condensing) humidity
Dimensions
■

Width = 220 mm (8.7 in.)

■

Depth = 135 mm (5.3 in.)

■

Height = 24 mm (1 in.)

Weight
Approximately 500 g (1.1 lbs)
Standards

Functional:

ISO 8802/3
IEEE 802.3
IEEE 802.11b, 802.11g, Wi-Fi

Safety:

UL60950
CSA 22.2 #60950
IEC 60950
EN 60950

EMC:

EN 55022 Class B
EN 55024
CISPR 22
FCC Part 15 Class B*
ICES-003 Class B
CNS 13438 Class A
ETSI EN 301 489–17

Radio

CFR 47 FCC Part 15.207, 15.209, 15.247 and 15.249.
ETS 300 328 (2.4 GHz ISM band wide band transmission

ADSL Wireless 11g 108Mbps Firewall Router

119

systems.
RSS-210
Environmental: EN 60068 (IEC 68)
*See “Regulatory Information” on page 137 for conditions of operation.
System Requirements

Operating Systems
The Router will support the following Operating Systems:
■

Windows 95/98

■

Windows NT 4.0

■

Windows ME

■

Windows 2000

■

Windows XP

■

Mac OS 8.5 or higher

■

Unix

Ethernet Performance

The Router complies to the IEEE 802.3i, u and x specifications.

Wireless Performance

The Router has been designed to conform to the Wi-Fi interoperability
test standard.

Cable Specifications

The Router supports the following cable types and maximum lengths:
■

Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed
Ethernet) Twisted Pair — shielded and unshielded cable types.

■

Maximum cable length of 100m (327.86 ft).

120

APPENDIX C: TECHNICAL SPECIFICATIONS

D

SAFETY INFORMATION

Important Safety
Information
WARNING: Warnings contain directions that you must follow for your
personal safety. Follow all directions carefully.
You must read the following safety information carefully before you
install or remove the unit:
WARNING: The Router generates and uses radio frequency (rf) energy. In
some environments, the use of rf energy is not permitted. The user
should seek local advice on whether or not rf energy is permitted within
the area of intended use.
WARNING: Exceptional care must be taken during installation and
removal of the unit.
WARNING: Only stack the Router with other OfficeConnect units.
WARNING: To ensure compliance with international safety standards,
only use the power adapter that is supplied with the unit.
WARNING: The socket outlet must be near to the unit and easily
accessible. You can only remove power from the unit by disconnecting
the power cord from the outlet.
WARNING: This unit operates under SELV (Safety Extra Low Voltage)
conditions according to IEC 60950. The conditions are only maintained if
the equipment to which it is connected also operates under SELV
conditions.
WARNING: There are no user-replaceable fuses or user-serviceable parts
inside the Router. If you have a physical problem with the unit that
cannot be solved with problem solving actions in this guide, contact your
supplier.

122

APPENDIX D: SAFETY INFORMATION

WARNING: Disconnect the power adapter before moving the unit.
WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They
cannot be used as telephone sockets. Only connect RJ-45 data
connectors to these sockets.

Wichtige
Sicherheitshinweise
VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer
eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu
befolgen.
Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen,
bevor Sie das Geräts installieren oder ausbauen:
VORSICHT: Der Router erzeugt und verwendet Funkfrequenz (RF). In
manchen Umgebungen ist die Verwendung von Funkfrequenz nicht
gestattet. Erkundigen Sie sich bei den zuständigen Stellen, ob die
Verwendung von Funkfrequenz in dem Bereich, in dem der Bluetooth
Access Point eingesetzt werden soll, erlaubt ist.
VORSICHT: Bei der Installation und beim Ausbau des Geräts ist mit
höchster Vorsicht vorzugehen.
VORTSICHT: Stapeln Sie das Geräts nur mit anderen OfficeConnect
Gerätes zusammen.
VORSICHT: Aufgrund von internationalen Sicherheitsnormen darf das
Gerät nur mit dem mitgelieferten Netzadapter verwendet werden.
VORSICHT: Die Netzsteckdose muß in der Nähe des Geräts und leicht
zugänglich sein. Die Stromversorgung des Geräts kann nur durch
Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen
werden.
VORSICHT: Der Betrieb dieses Geräts erfolgt unter den
SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 60950. Diese
Bedingungen sind nur gegeben, wenn auch die an das Gerät
angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.
VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu
wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem
Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung

Consignes importantes de sécurité

123

behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in
Verbindung.
VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel
herausziehen.
VORSICHT: RJ-45-Anschlüsse. Dies sind abgeschirmte
RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen
verwendet werden. An diesen Buchsen dürfen nur RJ-45-Datenstecker
angeschlossen werden.

Consignes
importantes de
sécurité

AVERTISSEMENT: Les avertissements présentent des consignes que vous
devez respecter pour garantir votre sécurité personnelle. Vous devez
respecter attentivement toutes les consignes.
Nous vous demandons de lire attentivement les consignes suivantes de
sécurité avant d’installer ou de retirer l’appareil:
AVERTISSEMENT: La Router fournit et utilise de l'énergie radioélectrique
(radio fréquence -rf). L'utilisation de l'énergie radioélectrique est interdite
dans certains environnements. L'utilisateur devra se renseigner sur
l'autorisation de cette énergie dans la zone prévue.
AVERTISSEMENT: Faites très attention lors de l'installation et de la
dépose du groupe.
AVERTISSEMENT: Seulement entasser le moyer avec les autres moyeux
OfficeConnects.
AVERTISSEMENT: Pour garantir le respect des normes internationales de
sécurité, utilisez uniquement l'adaptateur électrique remis avec cet
appareil.
AVERTISSEMENT: La prise secteur doit se trouver à proximité de
l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil
hors circuit qu'en débranchant son cordon électrique au niveau de cette
prise.
AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement
basse de sécurité qui est conforme à la norme CEI 60950. Ces conditions

124

APPENDIX D: SAFETY INFORMATION

ne sont maintenues que si l'équipement auquel il est raccordé fonctionne
dans les mêmes conditions.
AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs
ou entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un
problème physique avec le moyeu qui ne peut pas être résolu avec les
actions de la résolution des problèmes dans ce guide, contacter votre
fournisseur.
AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer
cet appareil.
AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées de
données RJ-45. Vous ne pouvez pas les utiliser comme prise de
téléphone. Branchez uniquement des connecteurs de données RJ-45 sur
ces prises femelles.

E

END USER SOFTWARE LICENSE
AGREEMENT

IMPORTANT: READ BEFORE INSTALLING THE SOFTWARE
3Com END USER SOFTWARE LICENSE AGREEMENT
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126

APPENDIX E: END USER SOFTWARE LICENSE AGREEMENT

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Copyright © 2004 3Com Corporation and its licensors. All rights reserved. 3Com is a registered trademark of 3Com Corporation.

GLOSSARY

802.11b

The IEEE specification for wireless Ethernet which allows speeds of up to
11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates.
The rates will switch automatically depending on range and environment.

802.11g

The IEEE specification for wireless Ethernet which allows speeds of up to
54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data
rates. The rates will switch automatically depending on range and
environment.

10BASE-T

The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5
twisted pair cable.

100BASE-TX

The IEEE specification for 100 Mbps Fast Ethernet over Category 5
twisted-pair cable.

Access Point

An Access Point is a device through which wireless clients connect to
other wireless clients and which acts as a bridge between wireless clients
and a wired network, such as Ethernet. Wireless clients can be moved
anywhere within the coverage area of the access point and still connect
with each other. If connected to an Ethernet network, the access point
monitors Ethernet traffic and forwards appropriate Ethernet messages to
the wireless network, while also monitoring wireless client radio traffic
and forwarding wireless client messages to the Ethernet LAN.

Ad Hoc mode

Ad Hoc mode is a configuration supported by most wireless clients. It is
used to connect a peer to peer network together without the use of an
access point. It offers lower performance than infrastructure mode, which
is the mode the Router uses. (see also Infrastructure mode.)

Auto-negotiation

Some devices in the OfficeConnect range support auto-negotiation.
Auto-negotiation is where two devices sharing a link, automatically

128

CHAPTER : GLOSSARY

configure to use the best common speed. The order of preference (best
first) is: 100BASE-TX full duplex, 100BASE-TX half duplex, 10BASE-T full
duplex, and 10BASE-T half duplex. Auto-negotiation is defined in the IEEE
802.3 standard for Ethernet and is an operation that takes place in a few
milliseconds.
Bandwidth

The information capacity, measured in bits per second, that a channel can
transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast
Ethernet is 100 Mbps. The bandwidth for 802.11b wireless is 11Mbps.

Category 3 Cables

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 3 is voice grade cable and can only be used in
Ethernet networks (10BASE-T) to transmit data at speeds of up to 10
Mbps.

Category 5 Cables

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 5 can be used in Ethernet (10BASE-T) and Fast
Ethernet networks (100BASE-TX) and can transmit data up to speeds of
100 Mbps. Category 5 cabling is better to use for network cabling than
Category 3, because it supports both Ethernet (10 Mbps) and Fast
Ethernet (100 Mbps) speeds.

Channel

Similar to any radio device, the OfficeConnect Router allows you to
choose different radio channels in the wireless spectrum. A channel is a
particular frequency within the 2.4GHz spectrum within which the Router
operates.

Client

The term used to described the desktop PC that is connected to your
network.

DDNS

Dynamic Domain Name Server. A method that enables Internet users to
tie their domain name(s) to computers or servers. DDNS enables a domain
name to follow an IP address automatically when the IP address changes.

DHCP

Dynamic Host Configuration Protocol. This protocol automatically
assigns an IP address for every computer on your network. Windows 95,
Windows 98 and Windows NT 4.0 contain software that assigns IP
addresses to workstations on a network. These assignments are made by
the DHCP server software that runs on Windows NT Server, and Windows

129

95 and Windows 98 will call the server to obtain the address. Windows
98 will allocate itself an address if no DHCP server can be found.
DNS Server Address

DSL modem

DNS stands for Domain Name System, which allows Internet host
computers to have a domain name (such as 3com.com) and one or more
IP addresses (such as 192.34.45.8). A DNS server keeps a database of
host computers and their respective domain names and IP addresses, so
that when a domain name is requested (as in typing “3com.com” into
your Internet browser), the user is sent to the proper IP address. The DNS
server address used by the computers on your home network is the
location of the DNS server your ISP has assigned.
DSL stands for digital subscriber line. A DSL modem uses your existing
phone lines to send and receive data at high speeds.

Encryption

A method for providing a level of security to wireless data transmissions.
The OfficeConnect Router and Wireless Router offer a choice of
encryption methods. See “WPA” and “WEP” for details.

ESSID

Extended Service Set Identifier. The ESSID is a unique identifier for your
wireless network. You must have the same ESSID entered into the Router
and each of it's wireless clients.

Ethernet

Ethernet Address
Fast Ethernet

A LAN specification developed jointly by Xerox, Intel and Digital
Equipment Corporation. Ethernet networks use CSMA/CD to transmit
packets at a rate of 10 Mbps over a variety of cables.
See MAC address.
An Ethernet system that is designed to operate at 100 Mbps.

Firewall

Electronic protection that prevents anyone outside of your network from
seeing your files or damaging your computers.

Full Duplex

A system that allows packets to be transmitted and received at the same
time and, in effect, doubles the potential throughput of a link.

130

CHAPTER : GLOSSARY

Router

A device that acts as a central hub by connecting to each computer's
network interface card and managing the data traffic between the local
network and the Internet.

Half Duplex

A system that allows packets to transmitted and received, but not at the
same time. Contrast with full duplex.

Hub

A device that regenerates LAN traffic so that the transmission distance of
that signal can be extended. Hubs are similar to repeaters, in that they
connect LANs of the same type; however they connect more LANs than a
repeater and are generally more sophisticated.

IEEE

Institute of Electrical and Electronics Engineers. This American
organization was founded in 1963 and sets standards for computers and
communications.

IETF

Internet Engineering Task Force. An organization responsible for
providing engineering solutions for TCP/IP networks. In the network
management area, this group is responsible for the development of the
SNMP protocol.

Infrastructure mode

Infrastructure mode is the wireless configuration supported by the Router.
You will need to ensure all of your clients are set up to use infrastructure
mode in order for them to communicate with the Access Point built into
your Router. (see also Ad Hoc mode)

IP

Internet Protocol. IP is a layer 3 network protocol that is the standard
for sending data through a network. IP is part of the TCP/IP set of
protocols that describe the routing of packets to addressed devices. An IP
address consists of 32 bits divided into two or three fields: a network
number and a host number or a network number, a subnet number, and
a host number.

IP Address

Internet Protocol Address. A unique identifier for a device attached to
a network using TCP/IP. The address is written as four octets separated
with periods (full-stops), and is made up of a network section, an
optional subnet section and a host section.

131

ISP

Internet Service Provider. An ISP is a business that provides connectivity to
the Internet for individuals and other businesses or organizations.

LAN

Local Area Network. A network of end stations (such as PCs, printers,
servers) and network devices (hubs and switches) that cover a relatively
small geographic area (usually not larger than a floor or building). LANs
are characterized by high transmission speeds over short distances (up to
1000 metres).

MAC

Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.

MAC Address

Media Access Control Address. Also called the hardware or physical
address. A layer 2 address associated with a particular network device.
Most devices that connect to a LAN have a MAC address assigned to
them as they are used to identify other devices in a network. MAC
addresses are 6 bytes long.

MTU

Maximum Transmission Unit is the size of the largest datagram that can
be sent over a network

NAT

Network Address Translation. NAT enables all the computers on your
network to share one IP address. The NAT capability of the Router allows
you to access the Internet from any computer on your home network
without having to purchase more IP addresses from your ISP.

Network

A Network is a collection of computers and other computer equipment
that are connected for the purpose of exchanging information or sharing
resources. Networks vary in size, some are within a single room, others
span continents.

Network Interface
Card (NIC)

Protocol

A circuit board installed into a piece of computing equipment, for
example, a computer, that enables you to connect it to the network. A
NIC is also known as an adapter or adapter card.
A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.

132

CHAPTER : GLOSSARY

PPPoE

Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a method
of data transmission originally created for dial-up connections; PPPoE is
for Ethernet connections.

PPTP

Point-to-Point Tunneling Protocol is a method of secure data transmission
between two remote sites over the internet.

QoS

QoS stands for Quality of Service. QoS is a generic name for a set of
algorithms which attempt to provide different levels of quality to different
types of network traffic.

RIP

RJ-45

Routing Information Protocol. RIP allows an administrator to set up
routing information on one RIP enabled device, and have that routing
information replicated to all RIP enabled devices on the network.
A standard connector used to connect Ethernet networks. The “RJ”
stands for “registered jack”.

Server

A computer in a network that is shared by multiple end stations. Servers
provide end stations with access to shared network services such as
computer files and printer queues.

SPI

Stateful Packet Inspection. This feature requires the firewall to remember
what outgoing requests have been sent and only allow responses to
those requests back through the firewall. This way, un-requested
attempts to access the network will be denied.

SSID

SNMP

Service Set Identifier. Some vendors of wireless products use SSID
interchangeably with ESSID.
Simple Network Management Protocol. It is used by network
management systems to communicate with network elements.

Subnet Address

An extension of the IP addressing scheme that allows a site to use a single
IP network address for multiple physical networks.

Subnet mask

A subnet mask, which may be a part of the TCP/IP information provided
by your ISP, is a set of four numbers configured like an IP address. It is
used to create IP address numbers used only within a particular network

133

(as opposed to valid IP address numbers recognized by the Internet,
which must assigned by InterNIC).
Subnets

A network that is a component of a larger network.

Switch

A device that interconnects several LANs to form a single logical LAN that
comprises of several LAN segments. Switches are similar to bridges, in
that they connect LANs of a different type; however they connect more
LANs than a bridge and are generally more sophisticated.

TCP/IP

Transmission Control Protocol/Internet Protocol. This is the name for
two of the most well-known protocols developed for the interconnection
of networks. Originally a UNIX standard, TCP/IP is now supported on
almost all platforms, and is the protocol of the Internet.
TCP relates to the content of the data travelling through a network —
ensuring that the information sent arrives in one piece when it reaches its
destination. IP relates to the address of the end station to which data is
being sent, as well as the address of the destination network.

Traffic

The movement of data packets on a network.

universal plug and
play

Universal plug and play is a system which allows compatible applications
to read some of their settings from the Router. This allows them to
automatically configure some, or all, of their settings and need less user
configuration.

URL Filter

A URL Filter is a feature of a firewall that allows it to stop its clients form
browsing inappropriate Web sites.

WAN

Wide Area Network. A network that connects computers located in
geographically separate areas (for example, different buildings, cities, or
countries). The Internet is an example of a wide area network.

WDS

Wireless Distribution System. A system that can be comprised of a
bridging and/or a repeater mode. In wireless bridging, APs communicate
only with each other to bridge together two separate networks. In
wireless repeating, APs rebroadcast received signals to extend reach and
range, at the expense of throughput. The Router uses wireless repeating.

134

CHAPTER : GLOSSARY

WECA

Wireless Ethernet Compatibility Alliance. An industry group formed to
certify cross vendor interoperability and compatibility of 802.11b and
802.11g wireless networking products and to promote the standard for
enterprise, small business and home environments. (see also 802.11b,
802.11g, Wi-Fi)

WEP

Wired Equivalent Privacy. A shared key encryption mechanism for
wireless networking. Encryption strength is 40/64 bit or 128 bit.

Wi-Fi

Wireless Fidelity. This is the certification granted by WECA to products
that meet their interoperability criteria. (see also 802.11b, WECA)

Wireless Client

Wireless LAN Service
Area
Wizard

WLAN

WPA

The term used to describe a desktop or mobile PC that is wirelessly
connected to your wireless network
Another term for ESSID (Extended Service Set Identifier)

A Windows application that automates a procedure such as installation
or configuration.
Wireless Local Area Network. A WLAN is a group of computers and
devices connected together by wireless in a relatively small area (such as a
house or office).
Wi-Fi Protected Access. A dynamically changing encryption mechanism
for wireless networking. Encryption strength is 256 bit.

INDEX

INDEX

Forgotten Password 102

I

A
Addresses
IP 113
Administration Password 34, 47
Advanced 81
DDNS 82
RIP 81
static route 81
Automatic Addressing 115

C
Cable Specifications 119
Channels 137
Configuration
backup 79
restore 79
Conventions
notice icons, About This Guide 9
text, About This Guide 10
Country Selection 32

D
DDNS 82, 84
DHCP 41, 51, 115
DHCP Server 28
Discovery Application 111
DNS 26, 39
primary 39
secondary 39
DoS attacks 70
Dynamic IP Address 38, 66

E
encryption 54
WPA 76

F
Firewall 66
SPI 70

Internet
addresses 113
Internet Addressing Mode 36
Internet Settings 65
PPPoE 66
PPTP 66
static IP address 65
IP Address 21, 41, 113

L
LAN 41, 48
LED 14
Login 112

N
Network
addresses 113
Networking
wireless 103
NIC
wireless 14

P
Password 31, 47
PPPoE 21, 28, 37, 66
PPTP 66
Profile 62

R
Remote Administration 92
Reset to Factory Defaults 79, 102
Restart 77
RIP 81
setting up 82

S
Safety Information 19
Setup Wizard 31, 48
Special Applications 68
Specifications
technical 117
SPI 70
Static IP Address 65
static IP address 65

135

136

INDEX

static route 81
Subnet Mask 41, 113
Summary 44
Support Information 98
Support Links 98

T
TCP/IP 25, 28, 41, 113
Technical
specifications 117
standards 117
Technical Support 108
Time Zone 35, 78

U
Unit Configuration 48
Upgrade 80
URL Filter 74

V
Virtual Servers 66, 67

W
WAN 36
Web Proxy 29
Wireless
authorized PCs 61
channel selection 52
client list 61
configuration 52
connection control 59
encryption 54
LED 15
networking 103
NIC 14
service area name 53
settings 42, 51

REGULATORY NOTICES

Regulatory
Information

3Com OfficeConnect ADSL Wireless 108Mbps 11g Firewall Router
(WL-553) must be installed and used in strict accordance with the
manufacturer’s instructions as described in the user documentation that
comes with the product.
This product contains encryption. It is unlawful to export out of the U.S.
without obtaining a U.S. Export License.
This product does not contain any user serviceable components. Any
unauthorized product changes or modifications will invalidate 3Com’s
warranty and all applicable regulatory certifications and approvals.
This product can only be used with the supplied antenna(s). The use of
external amplifiers or non-3Com antennas may invalidate regulatory
certifications and approvals.

CAUTION:
EXPOSURE TO
RADIO FREQUENCY
RADIATION.

This device generates and radiates radio-frequency energy. In order to
comply with FCC radio-frequency exposure guidelines for an uncontrolled
environment, this equipment must be installed and operated while
maintaining a minimum body to antenna distance of 20 cm
(approximately 8 in.).
The installer of this radio equipment must ensure that the antenna is
located or pointed such that it does not emit RF field in excess of Health
Canada limits for the general population; consult Safety Code 6,
obtainable from Health Canada’s website www.hc-sc.gc.ca/rpb.
This product must maintain a minimum body to antenna distance of 20
cm. Under these conditions this product will meet the Basic Restriction
limits of 1999/519/EC [Council Recommendation of 12 July 1999 on the

138

CHAPTER : REGULATORY NOTICES

limitation of exposure of the general public to electromagnetic fields (0
Hz to 300 GHz)].
US - Radio Frequency
Requirements

This device must not be co-located or operated in conjunction with any
other antenna or transmitter.

USA-FEDERAL
COMMUNICATIONS
COMMISSION (FCC)

This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses, and can radiate
radio frequency energy. If not installed and used in accordance with the
instructions, it may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by tuning the
equipment off and on, the user is encouraged to try and correct the
interference by one or more of the following measures:
■

Reorient or relocate the receiving antenna

■

Increase the distance between the equipment and the receiver

■

Connect the equipment to outlet on a circuit different from that to
which the receiver is connect

■

Consult the dealer or an experienced radio/TV technician for help

The user may find the following booklet prepared by the Federal
Communications Commission helpful:The Interference Handbook
This booklet is available from the U.S. Government Printing Office,
Washington, D.C. 20402. Stock No.004-000-0034504.
3Com is not responsible for any radio or television interference caused by
unauthorized modification of the devices included with this 3Com
OfficeConnect ADSL Wireless108Mbps 11g Firewall Router (WL-553), or
the substitution or attachment of connecting cables and equipment other
than specified by 3Com.

MANUFACTURER’S DECLARATION OF CONFORMITY

139

The correction of interference caused by such unauthorized modification,
substitution or attachment will be the responsibility of the user.

MANUFACTURER’S
DECLARATION OF
CONFORMITY

3Com Corporation
350 Campus Drive
Marlborough, MA 01752-3064, USA
(800) 527-8677
Date: 03,20 2007
Declares that the Product:
Brand Name: 3Com Corporation
Model Number: WL-553
Equipment Type: 3Com OfficeConnect ADSL Wireless 108Mbps 11g
Firewall Router

3Com OfficeConnect ADSL Wireless108Mbps 11g Firewall Router
Model WL-553

Complies with Part 15 of the FCC rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

CANADA – INDUSTR
YCANADA (IC)

This device complies with RSS 210 of Industry Canada.
Operation is subject to the following two conditions: (1) this device may
not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of this
device.”
L‘utilisation de ce dispositif est autorisée seulement aux conditions
suivantes: (1) il ne doit pas produire de brouillage et (2) l’ utilisateur du

140

CHAPTER : REGULATORY NOTICES

dispositif doit étre prêt à accepter tout brouillage radioélectrique reçu,
même si ce brouillage est susceptible de compromettre le
fonctionnement du dispositif.
The term "IC" before the equipment certification number only signifies
that the Industry Canada technical specifications were met.
To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated
power (EIRP) is not more than that required for successful
communication. To prevent radio interference to the licensed service, this
device is intended to be operated indoors and away from windows to
provide maximum shielding. Equipment (or its transmit antenna) that is
installed outdoors is subject to licensing.
Pour empecher que cet appareil cause du brouillage au service faisant
l'objet d'une licence, il doit etre utilize a l'interieur et devrait etre place
loin des fenetres afin de Fournier un ecram de blindage maximal. Si le
matriel (ou son antenne d'emission) est installe a l'exterieur, il doit faire
l'objet d'une licence.

INDUSTRY CANADA
(IC) EMISSIONS
COMPLIANCE
STATEMENT

This Class B digital apparatus complies with Canadian ICES-003.

DE CONFORMITÉ À LA

Cet appareil numérique de la classe B est conform à la norme NMB-003
du Canada.

RÉGLEMENTATION
D’INDUSTRIE CANADA

SAFETY
COMPLIANCE
NOTICE

This device has been tested and certified according to the following
safety standards and is intended for use only in Information Technology
Equipment which has been tested to these or other equivalent standards:
■

UL Standard 60950-1

■

CAN/CSA C22.2 No. 60950-1

■

IEC 60950-1

■

EN 60950-1

141

EUROPE – EU
DECLARATION OF
CONFORMITY

Note: to ensure product operation is in compliance with local
regulations, select the country in which the product is installed. Refer
to 3Com OfficeConnect Wireless 54Mbps/108Mbps 11g ADSL
This equipment may be operated in
AT

BE

CY

CZ

DK

EE

FI

DE

GR

HU

IE

IT

LV

LT

FR
LU

MT

NL

PL

PT

SK

SI

ES

SE

GB

IS

LI

NO

CH

BG

RO

TR

Intended use: IEEE 802.11g/b radio LAN device
NOTE: To ensure product operation is in compliance with local regulations, select the country in
which the product is installed. Refer to 3Com OfficeConnect Wireless 54Mbps/108Mbps 11g
Cable/DSL Router User Guide.

EUROPE - DECLARATION
OF CONFORMITY IN
LANGUAGES OF THE
EUROPEAN COMMUNITY
English

Finnish

Dutch

French

Swedish

Danish

German

Hereby, 3Com Corporation, declares that this RLAN device is in
compliance with the essential requirements and other relevant
provisions of Directive 1999/5/EC.
3Com Corporation vakuuttaa täten että RLAN device tyyppinen laite
on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien
direktiivin muiden ehtojen mukainen.
Hierbij verklaart 3Com Corporation dat het toestel RLAN device in
overeenstemming is met de essentiële eisen en de andere relevante
bepalingen van richtlijn 1999/5/EG
Bij deze verklaart 3Com Corporation dat deze RLAN device voldoet
aan de essentiële eisen en aan de overige relevante bepalingen van
Richtlijn 1999/5/EC.
Par la présente 3Com Corporation déclare que l'appareil RLAN
device est conforme aux exigences essentielles et aux autres
dispositions pertinentes de la directive 1999/5/CE
Par la présente, 3Com Corporation déclare que ce RLAN device est
conforme aux exigences essentielles et aux autres dispositions de la
directive 1999/5/CE qui lui sont applicables
Härmed intygar 3Com Corporation att denna RLAN device står I
överensstämmelse med de väsentliga egenskapskrav och övriga
relevanta bestämmelser som framgår av direktiv 1999/5/EG.
Undertegnede 3Com Corporation erklærer herved, at følgende
udstyr RLAN device overholder de væsentlige krav og øvrige
relevante krav i direktiv 1999/5/EF
Hiermit erklärt 3Com Corporation, dass sich dieser/diese/dieses
RLAN device in Übereinstimmung mit den grundlegenden
Anforderungen und den anderen relevanten Vorschriften der
Richtlinie 1999/5/EG befindet". (BMWi)
Hiermit erklärt 3Com Corporation die Übereinstimmung des Gerätes
RLAN device mit den grundlegenden Anforderungen und den
anderen relevanten Festlegungen der Richtlinie 1999/5/EG. (Wien)

142
Italian

Spanish

Portuguese

Malti

Estonian

Hungarian

Slovak
Czech

Slovene
Lithuanian
Latvian

Con la presente 3Com Corporation dichiara che questo RLAN
device è conforme ai requisiti essenziali ed alle altre disposizioni
pertinenti stabilite dalla direttiva 1999/5/CE.
Por medio de la presente 3Com Corporation declara que el RLAN
device cumple con los requisitos esenciales y cualesquiera otras
disposiciones aplicables o exigibles de la Directiva 1999/5/CE
3Com Corporation declara que este RLAN device está conforme
com os requisitos essenciais e outras disposições da Directiva
1999/5/CE.
Hawnhekk, 3Com Corporation, jiddikjara li dan RLAN device
jikkonforma mal-tiijiet essenzjali u ma provvedimenti orajn relevanti li
hemm fid-Dirrettiva 1999/5/EC
Käesolevaga kinnitab 3Com Corporation seadme RLAN device
vastavust direktiivi 1999/5/EÜ põhinõuetele ja nimetatud direktiivist
tulenevatele teistele asjakohastele sätetele.
Alulírott, 3Com Corporation nyilatkozom, hogy a RLAN device
megfelel a vonatkozó alapvetõ követelményeknek és az 1999/5/EC
irányelv egyéb elõírásainak.
3Com Corporation týmto vyhlasuje, že RLAN device spa základné
požiadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.
3Com Corporation tímto prohlašuje, že tento RLAN device je ve
shod se základními požadavky a dalšími píslušnými ustanoveními
smrnice 1999/5/ES.
Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka
esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.
Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka
esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.
Ar šo 3Com Corporation deklar, ka RLAN device atbilst Direktvas
1999/5/EK btiskajm prasbm un citiem ar to saisttajiem noteikumiem.

A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page
for the 3CRWDR200A-75 & 3CRWDR200B-75 at http://www.3com.com.

A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for the
3CRWER100-75(WL-537) at http://www.3com.com.
Also available at http://support.3com.com/doc/WL-537_EU_DOC.pdf
A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for the
3CRWER200-75(WL-537S) at http://www.3com.com.
Also available at http://support.3com.com/doc/WL-537S_EU_DOC.pdf

EUROPE – RESTRICTIONS FOR USE OF 2.4GHZ FREQUENCIES IN EUROPEAN COMMUNITY COUNTRIES
■This

device may be operated indoors or outdoors in all countries of the European Community
using the 2.4GHz band: Channels 1 – 13, except where noted below.

■In

Italy the end-user must apply for a license from the national spectrum authority to operate
this device outdoors.

■In

Belgium outdoor operation is only permitted using the 2.46 – 2.4835 GHz band: Channel 13.

■In

France outdoor operation is only permitted using the 2.4 – 2.454 GHz band: Channels 1 – 7.

Brazil RF Compliance
Este equipamento opera em caráter secundário, isto é, náo tem direito a proteçáo contra interferencia prejudicial, mesmo de estaçoes
do mesmo tipo, e náo causar interferencia a sistema operando em caráter primário.

3Com Corporation, Corporate Headquarters,
350 Campus Drive, Marlborough, MA
USA 01752-3064.

Copyright © 2008 3Com Corporation. All rights reserved.
3Com and OfficeConnect are registered trademarks of
3Com Corporation. All other company and product names
may be trademarks of their respective companies.

To learn more about 3Com products and services,
visit our World Wide Web site at www.3com.com
All specifications are subject to change without notice.

10015251



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