Linksys WET54G V3 Manuel utilisateur

A Division of Cisco Systems, Inc.

Model No.

Ethernet Bridge

Wireless-G

WET54G v3

User Guide

WIRELESS

GHz

2.4

802.11g

Wireless-G Ethernet Bridge

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco

rights reserved. Other brands and product names are trademarks or registered trademarks of their respective

holders.

How to Use this Guide

Your guide to the Wireless-G Ethernet Bridge has been designed to make understanding networking with the

Wireless-G Ethernet Bridge easier than ever. Look for the following items when reading this guide:

In addition to these symbols, there are definitions for technical terms that are presented like this:

Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like

this:

Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.

This exclamation point means there is a Caution or

warning and is something that could damage your

property or the Wireless-G Ethernet Bridge.

word: definition.

This checkmark means there is a Note of interest and

is something you should pay special attention to while

using the Wireless-G Ethernet Bridge.

This question mark provides you with a reminder about

something you might need to do while using the Wireless-G

Ethernet Bridge.

Figure 0-1: Sample Figure Description

WET54G_V3-UG-50729B BW

Wireless-G Ethernet Bridge

Table of Contents

Chapter 1: Introduction 1

Welcome 1

What’s in this Guide? 2

Chapter 2: Planning Your Wireless Network 4

Network Topology 4

Network Layout 5

Chapter 3: Getting to Know the Wireless-G Ethernet Bridge 6

The Back Panel 6

The Front Panel 7

Chapter 4: Connecting the Wireless-G Ethernet Bridge for Setup 8

Chapter 5: Setting Up the Wireless-G Ethernet Bridge 9

Chapter 6: Connecting the Wireless-G Ethernet Bridge for Network Use 14

Connection to a Network Device 14

Placement Options 14

Chapter 7: Using the Wireless-G Ethernet Bridge

Web-based Utility 16

Overview 16

Starting the Web-based Utility 16

Setup 17

Password 24

Advanced Settings 24

Status 26

Help 27

Appendix A: Troubleshooting 28

Common Problems and Solutions 28

Frequently Asked Questions 29

Appendix B: Wireless Security 32

Security Precautions 32

Security Threats Facing Wireless Networks 32

Appendix C: Upgrading Firmware 35

Appendix D: Windows Help 36

Wireless-G Ethernet Bridge

Appendix E: Glossary 37

Appendix F: Specifications 43

Appendix G: Warranty Information 45

Appendix H: Regulatory Information 46

Appendix I: Contact Information 48

Wireless-G Ethernet Bridge

List of Figures

Figure 2-1: Infrastructure Network 4

Figure 2-2: Ad-Hoc Network 5

Figure 2-3: Network Using Wireless Bridging 5

Figure 3-1: Back Panel 6

Figure 3-2: Front Panel 7

Figure 4-1: Connect to the Network 8

Figure 4-2: Connect the Power 8

Figure 5-1: Welcome 9

Figure 5-2: Connection 9

Figure 5-3: List of Bridges 10

Figure 5-4: Password 10

Figure 5-5: Mode Settings 10

Figure 5-6: Wireless Settings 11

Figure 5-7: IP Settings 11

Figure 5-8: Security Settings-WEP 12

Figure 5-9: Security Settings-WPA-PSK 12

Figure 5-10: Confirmation 13

Figure 5-11: Congratulations 13

Figure 6-1: Horizontal Placement 14

Figure 6-2: Vertical Placement 15

Figure 7-1: Password Screen 16

Figure 7-2: Setup Tab 17

Figure 7-3: Site Survey 18

Figure 7-4: Security Settings 18

Figure 7-5: WEP 19

Figure 7-6: WPA Pre-Shared Key 20

Figure 7-7: Log Table 20

Figure 7-8: RADIUS-MD5 21

Figure 7-9: RADIUS-TLS 22

Wireless-G Ethernet Bridge

Figure 7-10: RADIUS-TTLS 23

Figure 7-11: Password Tab 24

Figure 7-12: Advanced Settings Tab 24

Figure 7-13: Status Tab 26

Figure 7-14: Help Tab 27

Figure 7-15: Firmware Upgrade 27

Figure C-1: Firmware Upgrade 35

Chapter 1: Introduction

Welcome

Wireless-G Ethernet Bridge

Chapter 1: Introduction

Welcome

Thank you for choosing the Wireless-G Ethernet Bridge. The versatile Wireless-G Ethernet Bridge can make any

wired Ethernet-equipped device a part of your wireless network. At home, use the Bridge to connect game

consoles, set-top boxes, or computers to your Wireless-G network and its shared high-speed Internet connection.

In the office, convert your Ethernet-wired printer, camera, notebook or desktop into a wireless networked device.

It's completely driver-free, so it works on any platform and under any operating system! Since there's no drivers

to load, setup is a snap—configure the network settings through your PC's web browser, then plug it into your

device and go. And physical installation is simplified by support for Power Over Ethernet. With an optional POE

Adapter, you can mount the Bridge wherever you want—power and data are both supplied through the Category

5 Ethernet cable.

You can also use the Wireless-G Ethernet Bridge as a kind of “cable-less cable” to connect remote areas

together. Maybe Shipping is all the way across the warehouse from Receiving. Or maybe you want to set up a

home office in your detached garage. With a Wireless-G Ethernet Bridge in the garage, and another one (or a

Wireless-G Access Point) in the house, you're connected—no digging trenches, and no overhead wires. Let the

Wireless-G Ethernet Bridge from Linksys open up exciting new possibilities for your wireless network.

Use the instructions in this Guide to help you set up and connect the Bridge. These instructions should be all you

need to get the most out of the Wireless-G Ethernet Bridge.

Ethernet: an IEEE standard network

protocol that specifies how data is

placed on and retrieved from a

common transmission medium.

802.11g: an IEEE wireless networking

standard that specifies a maximum

data transfer rate of 54Mbps, an

operating frequency of 2.4GHz, and

backward compatibility with 802.11b

devices.

Chapter 1: Introduction

What’s in this Guide?

Wireless-G Ethernet Bridge

What’s in this Guide?

This user guide covers the steps for setting up and using the Wireless-G Ethernet Bridge.

• Chapter 1: Introduction

This chapter describes the Wireless-G Ethernet Bridge applications and this user guide.

• Chapter 2: Planning your Wireless Network

This chapter describes the basics of wireless networking.

• Chapter 3: Getting to Know the Wireless-G Ethernet Bridge

This chapter describes the physical features of the Bridge.

• Chapter 4: Connecting the Wireless-G Ethernet Bridge for Setup.

This chapter instructs you on how to connect the Bridge to your network for setup.

• Chapter 5: Setting Up the Wireless-G Ethernet Bridge.

This chapter explains how to set up the Bridge using the Setup Wizard.

• Chapter 6: Connecting the Wireless-G Ethernet Bridge for Network Use.

This chapter explains how to connect the Bridge to a network device so the device can join your wireless

network. It also describes placement options for the Bridge.

• Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

This chapter explains how to use the Web-based Utility so you can change the Bridge’s settings or advanced

configuration.

• Appendix A: Troubleshooting

This appendix describes some problems and solutions, as well as frequently asked questions, regarding

installation and use of the Wireless-G Ethernet Bridge.

• Appendix B: Wireless Security

This appendix explains the risks of wireless networking and some solutions to reduce the risks.

• Appendix C: Upgrading Firmware

This appendix instructs you on how to upgrade the firmware on the Bridge should you need to do so.

• Appendix D: Windows Help

This appendix describes how you can use Windows Help for instructions about networking, such as installing

the TCP/IP protocol.

Chapter 1: Introduction

What’s in this Guide?

Wireless-G Ethernet Bridge

• Appendix E: Glossary

This appendix gives a brief glossary of terms frequently used in networking.

• Appendix F: Specifications

This appendix provides the technical specifications for the Bridge.

• Appendix G: Warranty Information

This appendix supplies the warranty information for the Bridge.

• Appendix H: Regulatory Information

This appendix supplies the regulatory information regarding the Bridge.

• Appendix I: Contact Information

This appendix provides contact information for a variety of Linksys resources, including Technical Support.

Chapter 2: Planning Your Wireless Network

Network Topology

Wireless-G Ethernet Bridge

Chapter 2: Planning Your Wireless Network

Network Topology

A wireless local area network (WLAN) is exactly like a regular local area network (LAN), except that each

computer in the WLAN uses a wireless device to connect to the network. Computers in a WLAN share the same

frequency channel and SSID, which is an identification name shared by the wireless devices belonging to the

same wireless network.

Ad-Hoc versus Infrastructure Mode

Unlike wired networks, wireless networks have two different modes in which they may be set up: infrastructure

and ad-hoc. An infrastructure configuration is a WLAN and wired LAN communicating to each other through an

access point. An ad-hoc configuration is wireless-equipped computers communicating directly with each other.

Choosing between these two modes depends on whether or not the wireless network needs to share data or

peripherals with a wired network or not.

If the computers on the wireless network need to be accessible by a wired network or need to share a peripheral,

such as a printer, with the wired network computers, the wireless network should be set up in Infrastructure

mode. The basis of Infrastructure mode centers around an access point, which serves as the main point of

communications in a wireless network (see Figure 2-1). Access points transmit data to PCs equipped with

wireless network cards, which can roam within a certain radial range of the access point. Multiple access points

can be arranged to work in succession to extend the roaming range, and can be set up to communicate with your

Ethernet hardware as well.

If the wireless network is relatively small and needs to share resources only with the other computers on the

wireless network, then the Ad-Hoc mode can be used. Ad-Hoc mode allows computers equipped with wireless

transmitters and receivers to communicate directly with each other, eliminating the need for an access point. The

drawback of this mode is that in Ad-Hoc mode, wireless-equipped computers are not able to communicate with

computers on a wired network. And, of course, communication between the wireless-equipped computers is

limited by the distance and interference directly between them.

Figure 2-2 shows a typical scenario of four Wireless-G Ethernet Bridges in ad-hoc mode. Figure 2-3 shows a

typical wireless bridging scenario using two Wireless-G Ethernet Bridges. Each wireless network is connected to

a Wireless-G Ethernet Bridge through a switch. A separate notebook computer is equipped with a wireless

network adapter and can communicate with either wireless network when it is configured with the appropriate

SSID and channel.

SSID: your wireless network’s name.

LAN (Local Area Network): the

computers and networking products

that make up your local network.

Figure 2-1: Infrastructure Network

Infrastructure: a wireless network

that is bridged to a wired network via

an access point.

Ad-hoc: a group of wireless devices

communicating directly to each other

(peer-to-peer) without the use of an

access point.

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