3Com 3Crwdr200A 75 Owners Manual DUA0554 TAAA02

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Part No. 10015251 Rev. AB

Published August 2008

OfficeConnect®

ADSL Wireless 108Mbps 11g Firewall Router

User Guide

Model WL-553

3CRWDR200A-75

3CRWDR200B-75

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

Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively

through X/Open Company, Ltd.

Netscape Navigator is a registered trademark of Netscape Communications.

JavaScript is a trademark of Sun Microsystems

Wi-Fi and the Wi-Fi logo are registered trademarks of the WI-Fi Alliance.

IEEE and 802 are trademarks of the Institute of Electrical and Electronics Engineers, Inc.

All other company and product names may be trademarks of the respective companies with which they are

associated.

ENVIRONMENTAL STATEMENT

It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we

are committed to:

Establishing environmental performance standards that comply with national legislation and regulations.

Conserving energy, materials and natural resources in all operations.

Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental

standards. Maximizing the recyclable and reusable content of all products.

Ensuring that all products can be recycled, reused and disposed of safely.

Ensuring that all products are labelled according to recognized environmental standards.

Improving our environmental record on a continual basis.

End of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is

fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and

the inks are vegetable-based with a low heavy-metal content.

CONTENTS

ABOUT THIS GUIDE

Naming Convention 9

Conventions 9

Related Documentation 10

1INTRODUCING THE ROUTER

OfficeConnect ADSL Wireless 108Mbps 11g Firewall Router 11

Firewall Router Advantages 13

Package Contents 13

Minimum System and Component Requirements 14

Front Panel 14

Rear Panel 16

2HARDWARE 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

3SETTING UP YOUR COMPUTERS

Obtaining an IP Address Automatically 25

Windows 2000 25

Windows Vista 27

Windows XP 27

Windows 95/98/ME 27

Macintosh 28

Disabling PPPoE and PPTP Client Software 28

Disabling Web Proxy 29

4RUNNING 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

5ROUTER CONFIGURATION

Navigating Through the Router Configuration Pages 45

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

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

6TROUBLESHOOTING

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

AUSING DISCOVERY

Running the Discovery Application 111

Windows Installation (95/98/2000/Me/NT/ XP) 111

BIP 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? 115

DHCP Addressing 115

Static Addressing 115

Auto-IP Addressing 115

CTECHNICAL SPECIFICATIONS

ADSL Wireless 11g 108Mbps Firewall Router 117

Standards 118

System Requirements 119

Ethernet Performance 119

Wireless Performance 119

Cable Specifications 119

DSAFETY INFORMATION

Important Safety Information 121

Wichtige Sicherheitshinweise 122

Consignes importantes de sécurité 123

EEND 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

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.

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 Description

The words “enter”

and “type”

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.”

Keyboard key names If you must press two or more keys simultaneously, the key

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

Words in italics 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.

Table 1 Notice Icons

Icon Notice Type Description

1INTRODUCING 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 13

Firewall Router

Advantages

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

Package Contents 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

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.

Front Panel 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

1Alert 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:

3CRWDR200A-75

ADSL Wireless 108Mbps 11g Firewall Router

Sync

DSL

Data

DSL

On= 10M/100M, Flash = Activity

Alert Power

WLAN

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”.

2Power LED

Green

Indicates that the Router is powered on.

3Wireless 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”.

4Four 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.

5Sync 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”).

6Data 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

7Wireless 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.

8ADSL Port

Using the RJ11 cable provided, connect your Router to the telephone

socket via a splitter.

or

Using the RJ45 cable provided, connect your Router to the telephone

socket via a splitter.

9Power 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

2HARDWARE INSTALLATION

Introduction 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:

■It is out of direct sunlight and away from sources of heat.

■Cabling is away from power lines, fluorescent lighting fixtures, and

sources of electrical noise such as radios, transmitters and broadband

amplifiers.

■Water or moisture cannot enter the case of the unit.

■Air flow around the unit and through the vents in the side of the case

is not restricted. 3Com recommends you provide a minimum of

25 mm (1 in.) clearance.

Using the Rubber

Feet

Use the four self-adhesive rubber feet to prevent your Router from

moving around on your desk or when stacking with other flat top

OfficeConnect units. Only stick the feet to the marked areas at each

corner of the underside of your Router.

Stacking the 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:

1Ensure that the wall you use is smooth, flat, dry and sturdy and make two

screw holes which are 150 mm (5.9 in.) apart.

2Fix the screws into the wall, leaving their heads 3 mm (0.12 in.) clear of

the wall surface.

3Remove 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:

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:

PPPoE User Name : ______________________

PPPoE Password : ______________________

PPPoE Service Name : ______________________

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:

1Plug the power adapter into the power adapter socket located on the

back panel of the Router.

2Plug 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

To use your Router to connect to the Internet through an DSL connection:

1Insert 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.

2Connect 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.

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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

3SETTING 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

Refer to the section below that relates to your operating system for

details on how to obtain an IP address automatically.

Windows 2000 If you are using a Windows 2000-based computer, use the following

procedure to change your TCP/IP settings:

1From the Windows Start Menu, select Settings > Control Panel.

2Double click on Network and Dial-Up Connections.

3Double click on Local Area Connection.

4Click on Properties.

5A 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

6Ensure 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

7Restart your computer.

Obtaining an IP Address Automatically 27

Windows Vista If you are using a Windows Vista computer, use the following procedure

to change your TCP/IP settings:

1From the Windows start menu, select Network.

2Select Network Center option from the top menu.

3Select Manage Networks from the left panel.

4Double click on the Local Area Connection icon. A screen titled Local

Area Connection Status will appear.

5Click on Details and bring up the Local Area Connection Properties tab.

6Select Internet Protocol TCP/IP and click on Properties.

7Ensure 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:

1From the Windows Start menu, select Control Panel.

2Click on Netmwork and Internet Connections.

3Click on the Network Connections icon.

4Double click on LAN or High Speed Connection icon. A screen titled Local

Area Connection Status will appear.

5Select Internet Protocol TCP/IP and click on Properties.

6Ensure that the options Obtain an IP Address automatically, and Obtain

DNS servers automatically are both selected. Click OK.

7Restart 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:

1From the Windows Start Menu, select Settings > Control Panel.

2Double click on Network. Select the TCP/IP item for your network card

and click on Properties.

3In 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:

1From the desktop, select Apple Menu, Control Panels, and TCP/IP.

2In the TCP/IP control panel, set Connect Via: to “Ethernet”.

3In the TCP/IP control panel, set Configure: to “Using DHCP Server.”

4Close the TCP/IP dialog box, and save your changes.

5Restart 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:

1From the Windows Start menu, select Settings > Control Panel.

2Double click on Internet Options.

3Select the Connections Tab. A screen similar to Figure 8 should be

displayed.

4Select 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 29

Disabling Web

Proxy

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

4RUNNING THE SETUP WIZARD

Accessing the

Wizard

The Router setup program is Web-based, which means that it is accessed

through your Web browser (Netscape Navigator 4.7 or higher, Internet

Explorer 5.0 or higher, or Mozilla 1.2.1 or higher).

To use the Setup Wizard:

1Ensure that you have at least one computer connected to the Router.

Refer to Chapter 2 for details on how to do this.

2Launch your Web browser on the computer.

3Enter 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)

4To 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

5If 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

6When 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).

7Click Next.

8You 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:

1Enter your PPP user name in the PPPoE User Name text box.

2Enter your PPP password in the PPPoE Password text box.

3Enter 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.

4Select 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.

5Manual 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).

6Check 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:

1Enter your PPP over ATM user name in the PPP User Name text box.

2Enter your PPP over ATM password in the PPP Password text box.

3Select 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.

4Manual 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).

5Check 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:

1Manual 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.

2Manual Default Gateway Configuration: Enter the gateway’s IP address or

select the WAN interface to use to connect to it.

3Manual 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.

4Check 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:

1WAN IP Address: Enter the IP Address given by your ISP.

2WAN Subnet Mask: Enter the subnet mask given by your ISP.

3Manual 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.

4Manual 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.

5ROUTER CONFIGURATION

Navigating

Through the Router

Configuration

Pages

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).

Main Menu 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

■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.

Option Tabs 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 The Welcome section allows you to view the Notice board and to change

your Password. You can also gain access to the Configuration Wizard.

Notice Board 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:

1Enter the current password in the Old Password field

2Enter the new password in the New Password field

3Enter the new password again in the Confirm Password field

4Click Apply to apply the new password

The password is case sensitive.

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

48 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 The LAN Settings menu provides the following options:

Unit Configuration Figure 29 Unit Configuration Screen

LAN Settings 49

This screen allows you to change the IP address and subnet mask.

1IP Address: Enter the IP Address for the router.

2Subnet Mask: Enter the Subnet Mask for the router.

3Enable 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.

4Select 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.

53Com NBX Call Processor: If you have 3Com NBX Call Processor, enter its

IP Address here.

6Enable 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.

50 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:

1Enter 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 51

DHCP Lease Table 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.

54 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

1Please choose from 64 bits or 128 bits for the Encryption Strength.

2Enter the Passphrase which can be up to 31 characters long and may

contain any alphanumeric characters in the field.

3Click 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.

4Manually 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

1Select either TKIP or AES as the Encryption Method.

2Enter a passphrase between 8 to 63 characters long for the Pre-Shared

Key.

3Enter 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

1Select Encryption Method from the drop-down box.

2Enter the frequency for Group Rekey Interval in seconds..

3Enter the RADIUS Server IP address.

4Enter the RADIUS Port number.

5Enter 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: should be smaller for delay-sensitive data

CW max: should be smaller for delay-sensitive data

AIFSN: 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.

60 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 61

Client List 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.

62 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.

64 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:

1Both AP's WDS should be enabled.

2APs are configured with the same Channel, SSID and Encryptions.

3Each 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

66 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 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.

Virtual Servers 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:

1Select an application from the drop-down menu or fill in the blank fields

to specify your own application.

2The 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.

3Enter the last digit of the LAN server IP address.

4Click 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.

68 CHAPTER 5: ROUTER CONFIGURATION

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:

1Click Add to open the Special Applications screen.

2Select an application from the drop-down menu or enter the application

name.

3Enter the Triggered port and the forwarded range in the text boxes.

4Select the Enabled box to make it activated.

Firewall 69

5Click 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

70 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:

1Select 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.

72 CHAPTER 5: ROUTER CONFIGURATION

To use access control for the computers:

1Enter the PC’s description and the range of the ip addresses.

2Select 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)

3Please select to block specific services or protocols.

4You may also block additional ports by listing the port range in the User

Defined Blocked Ports.

5To 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.

6Click 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

1Click Add Rule at the Schedule Rules screen.

2Enter the Schedule name and give a brief description.

3Check 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.

74 CHAPTER 5: ROUTER CONFIGURATION

To activate Content Filtering:

1Select Firewall from the main menu, then select the Content Filter tab.

The Content Filter screen displays.

Figure 47 Content Filter Screen

2Make sure the Enable Content Filter check box is checked.

3Select 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.

4Select the Server Timeout value in milliseconds. The default is 3000

milliseconds (3 seconds).

5Select 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:

1Check the Enable URL Filtering Function box to enable the URL

filtering.

2Enter 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.

76 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.

3Please 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 77

Restart 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.

78 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 79

Configuration 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.

80 CHAPTER 5: ROUTER CONFIGURATION

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 81

Advanced 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:

■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.

RIP The Router supports the Routing Information Protocol (RIP). RIP allows

you to set up routing information on one RIP enabled device, and have

82 CHAPTER 5: ROUTER CONFIGURATION

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.

1Select either 1 (for RIPv1) or 2 (for RIPv2) from the Version drop-down list.

2Select 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.

3Check 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:

1Select Advanced from the main menu, then select the DDNS tab. The

DDNS screen displays.

Figure 55 DDNS screen

2Select 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:

1In the Domain Name text box, enter the domain name.

2In the Username/E-mail text box, enter the account name.

3In the Key text box, enter the account password.

4In the Refresh Time box, enter how often you want the service to

automatically refresh, in days. The default is three days.

5Click Apply to make this service active.

DynDNS.org/DtDns.com/Zoneedit.com

If you select DYNDNS.org, DtDns, or Zoneedit.com:

1In the Host Name text box, enter the host name.

2In the Username text box, enter the account name.

84 CHAPTER 5: ROUTER CONFIGURATION

3In the Password text box, enter the account password.

4Click add to add your DDNS.

NOIP.com

1In the Host Name text box, enter the host name.

2In the E-mail text box, enter the account name.

3In the Password text box, enter the account password.

4Click 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:

1On the menu, click Advanced.

2Click the Proxy ARP tab.

3Select the Enable Proxy ARP check box.

4Enter the static IP addresses that your ISP has given to you.

5Click 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.

86 CHAPTER 5: ROUTER CONFIGURATION

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.

88 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:

1Click the View Log button.

To enable the system log:

1Check Enable System Log box.

2Select the drop-down menu for a list of available types of logging

activities.

3Select 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.

90 CHAPTER 5: ROUTER CONFIGURATION

Figure 61 The SNMP Screen

Click Enable/Disable to enable/disable the agent.

To Configure the SNMP:

1Type the Read Community, which is the password for the incoming Get

and GetNext requests from the management station.

2Type the Set Community, which is the password for incoming Set requests

from the management station.

3Type the System Name for the program.

4Type the System Location for the program.

5Type the System Contact for the Contact person’s name.

6Type the IP Address of the station/device for sending your SNMP traps to.

7Click 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.

92 CHAPTER 5: ROUTER CONFIGURATION

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:

1Select commands that you would like to run from the menu.

2Enter the IP Address or Domain Name in the field provided.

3Click Start to start executing the command.

4The 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.

94 CHAPTER 5: ROUTER CONFIGURATION

Figure 66 The Diagnostics Screen

Device Info The Device Info Settings menu provides the following options:

Device Info 95

Summary 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.

96 CHAPTER 5: ROUTER CONFIGURATION

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 97

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.

98 CHAPTER 5: ROUTER CONFIGURATION

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 99

Feedback 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.

100 CHAPTER 5: ROUTER CONFIGURATION

6TROUBLESHOOTING

Basic Connection

Checks

■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.

Browsing to the

Router

Configuration

Screens

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.

102 CHAPTER 6: TROUBLESHOOTING

■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.

Connecting to the

Internet

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.

Forgotten Password

and Reset to

Factory Defaults

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:

1Use the tip of a pen.

2Press and hold the reset button at the rear panel of the device for about 5

seconds and release. The LEDs will start blinking.

3Wait until the Alert Led stops flashing the red light when the device has

completed the Power On Self Test.

4Now 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.

5When 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:

■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.

Replacement Power

Adapters

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 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.

Recovering from

Corrupted Software

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

1Remove power from the Router and disconnect all your computers,

except for the one computer with the software image.

2You will need to reconfigure this computer with the following static IP

address information:

Frequently Asked Questions 107

■IP address: 192.168.1.2

■Subnet mask: 255.255.255.0

■Default Router address: 192.168.1.1

3Restart the computer, and re-apply power to the Router.

4Using 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.

5Follow the on-screen instructions. Enter the path and filename of the

software image file.

6When the upload has completed, the Router will restart, run the self-test

and, if successful, resume normal operation. The Alert LED will go out.

7Refer 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

AUSING DISCOVERY

Running the

Discovery

Application

3Com provides a user-friendly Discovery application for detecting the

Router on the network.

Windows Installation

(95/98/2000/Me/NT/

XP)

1Insert 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

2When 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

3Figure 76 shows an example Discovered Devices screen. Highlight the

Router by clicking on it, and press Next.

Figure 76 Discovery Finish Screen

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

the Router.

BIP 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:

■An IP address

■A Subnet Mask

IP Addresses and

Subnet Masks

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

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’.

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

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?

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)

DHCP 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 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.

Auto-IP Addressing 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

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

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.

CTECHNICAL 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

DSAFETY 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.

EEND USER SOFTWARE LICENSE

AGREEMENT

IMPORTANT: READ BEFORE INSTALLING THE SOFTWARE

3Com END USER SOFTWARE LICENSE AGREEMENT

YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING

THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION (ì3COMî) TO ITS CUSTOMERS FOR THEIR USE ONLY AS

SET FORTH BELOW. DOWNLOADING, INSTALLING OR OTHERWISE USING ANY PART OF THE SOFTWARE OR DOCUMENTATION

INDICATES THAT YOU ACCEPT THESE TERMS AND CONDITIONS. IF YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF

THIS AGREEMENT, DO NOT DOWNLOAD, INSTALL OR OTHERWISE USE THE SOFTWARE OR DOCUMENTATION, DO NOT CLICK ON

THE "I AGREE" OR SIMILAR BUTTON. AND IF YOU HAVE RECEIVED THE SOFTWARE AND DOCUMENTATION ON PHYSICAL

MEDIA, RETURN THE ENTIRE PRODUCT WITH THE SOFTWARE AND DOCUMENTATION UNUSED TO THE SUPPLIER WHERE YOU

OBTAINED IT.

LICENSE: 3Com grants you a nonexclusive, nontransferable (except as specified herein) license to use the accompanying software program(s) in executable

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Except as provided below, this Agreement does not grant you any rights to patents, copyrights, trade secrets, trademarks, or any other rights with respect to the

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Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for

your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the

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laws and regulations and may be subject to export or import regulations in other countries, including controls on encryption products. You agree that you will not

export, reexport or transfer the Product (or any copies thereof) or any products utilizing the Product in violation of any applicable laws or regulations of the

United States or the country where you legally obtained it. You are responsible for obtaining any licenses to export, reexport, transfer or import the Product.

In addition to the above, the Product may not be used by, or exported or reexported to (i) any U.S.- or EU- sanctioned or embargoed country, or to

nationals or residents of such countries; or (ii) to any person, entity, organization or other party identified on the U.S. Department of Commerce’s Table

of Denial Orders or the U.S. Department of Treasury’s lists of "Specially Designated Nationals and Blocked Persons," as published and revised from

time to time; (iii) to any party engaged in nuclear, chemical/biological weapons or missile proliferation activities, unless authorized by U.S. and local (as

required) law or regulations.

TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of 3Com

and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software and

Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.

UNITED STATES GOVERNMENT LEGENDS: The Software, Documentation and any other technical data provided hereunder is commercial in nature and

developed solely at private expense. The Software is delivered as ìCommercial Computer Softwareî as defined in DFARS 252.227-7014 (June 1995) or as a

126 APPENDIX E: END USER SOFTWARE LICENSE AGREEMENT

commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in this Agreement, which is 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.

TERM AND TERMINATION: The licenses granted hereunder are perpetual unless terminated earlier as specified below. You may terminate the licenses and

this Agreement at any time by destroying the Software and Documentation together with all copies and merged portions in any form. The licenses and this

Agreement will also terminate immediately if you fail to comply with any term or condition of this Agreement. Upon such termination you agree to destroy the

Software and Documentation, together with all copies and merged portions in any form.

LIMITED WARRANTIES AND LIMITATION OF LIABILITY: All warranties and limitations of liability applicable to the Software are as stated on the

Limited Warranty Card or in the product manual, whether in paper or electronic form, accompanying the Software. Such warranties and limitations of liability

are incorporated herein in their entirety by this reference.

GOVERNING LAW: This Agreement shall be governed by the laws of the State of California, U.S.A. excluding its conflicts of laws principles and excluding

the United Nations Convention on Contracts for the International Sale of Goods.

SEVERABILITY: In the event any provision of this Agreement is found to be invalid, illegal or unenforceable, the validity, legality and enforceability of any

of the remaining provisions shall not in any way be affected or impaired and a valid, legal and enforceable provision of similar intent and economic impact shall

be substituted therefor.

ENTIRE AGREEMENT: This Agreement sets forth the entire understanding and agreement between you and 3Com and supersedes all prior agreements,

whether written or oral, with respect to the Software and Documentation, and may be amended only in a writing signed by both parties.

Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason, please contact the 3Com subsidiary serving

your country, or write: 3Com Corporation, Customer Support Information, 350 Campus Drive, Marlborough, MA 01752-3064

3Com Corporation

350 Campus Drive,

Marlborough, MA 01752-3064

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 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 modem 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 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.

Ethernet Address See MAC address.

Fast Ethernet 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)

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.

Protocol 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 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.

RJ-45 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 Service Set Identifier. Some vendors of wireless products use SSID

interchangeably with ESSID.

SNMP 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 The term used to describe a desktop or mobile PC that is wirelessly

connected to your wireless network

Wireless LAN Service

Area

Another term for ESSID (Extended Service Set Identifier)

Wizard A Windows application that automates a procedure such as installation

or configuration.

WLAN 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).

WPA Wi-Fi Protected Access. A dynamically changing encryption mechanism

for wireless networking. Encryption strength is 256 bit.

INDEX 135

INDEX

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

Forgotten Password 102

I

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

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

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

3Com OfficeConnect ADSL Wireless108Mbps 11g Firewall Router

Model WL-553

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

RÉGLEMENTATION

D’INDUSTRIE CANADA

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

du 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

E

UR

O

PE

– EU

D

ECLA

RATI

ON

OF

C

ON

F

O

RMIT

Y

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.

E

UR

O

PE

- D

ECLA

RATI

ON

OF

C

ONFO

RMIT

YIN

L

AN

GUAG

ES

OF

TH

E

E

UROP

EA

N

C

OMM

UNI

T

Y

AT BE CY CZ DK EE FI FR

DE GR HU IE IT LV LT LU

MT NL PL PT SK SI ES SE

GB IS LI NO CH BG RO TR

This equipment may be operated in

English Hereby, 3Com Corporation, declares that this RLAN device is in

compliance with the essential requirements and other relevant

provisions of Directive 1999/5/EC.

Finnish 3Com Corporation vakuuttaa täten että RLAN device tyyppinen laite

on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien

direktiivin muiden ehtojen mukainen.

Dutch 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.

French 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

Swedish 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.

Danish Undertegnede 3Com Corporation erklærer herved, at følgende

udstyr RLAN device overholder de væsentlige krav og øvrige

relevante krav i direktiv 1999/5/EF

German 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)

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

142

Italian 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.

Spanish 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

Portuguese 3Com Corporation declara que este RLAN device está conforme

com os requisitos essenciais e outras disposições da Directiva

1999/5/CE.

Malti Hawnhekk, 3Com Corporation, jiddikjara li dan RLAN device

jikkonforma mal-tiijiet essenzjali u ma provvedimenti orajn relevanti li

hemm fid-Dirrettiva 1999/5/EC

Estonian Käesolevaga kinnitab 3Com Corporation seadme RLAN device

vastavust direktiivi 1999/5/EÜ põhinõuetele ja nimetatud direktiivist

tulenevatele teistele asjakohastele sätetele.

Hungarian Alulírott, 3Com Corporation nyilatkozom, hogy a RLAN device

megfelel a vonatkozó alapvetõ követelményeknek és az 1999/5/EC

irányelv egyéb elõírásainak.

Slovak 3Com Corporation týmto vyhlasuje, že RLAN device spa základné

požiadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.

Czech 3Com Corporation tímto prohlašuje, že tento RLAN device je ve

shod se základními požadavky a dalšími píslušnými ustanoveními

smrnice 1999/5/ES.

Slovene Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka

esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

Lithuanian Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka

esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

Latvian 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

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

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■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.

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.

3Com Corporation, Corporate Headquarters,

350 Campus Drive, Marlborough, MA

USA 01752-3064.

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.

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.

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