Linksys BEFSR81 - EtherFast Cable/DSL Router Manuel utilisateur

Instant Broadband™ Series

EtherFast Cable/DSL

Router

Model No.: BEFSR81

User Guide

trademark of Linksys. Microsoft, Windows, and the Windows logo are registered trade-

marks of Microsoft Corporation. All other trademarks and brand names are the proper-

ty of their respective proprietors.

LIMITED WARRANTY

Linksys guarantees that every Instant Broadband EtherFast Cable/DSL Router is free

from physical defects in material and workmanship under normal use for one year from

the date of purchase. If the product proves defective during this warranty period, call

Linksys Customer Support in order to obtain a Return Authorization Number. BE SURE

TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCT'S

PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE

PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product, mark the

Return Authorization Number clearly on the outside of the package and include your

original proof of purchase.

IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PROD-

UCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM-

AGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFT-

WARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY

PRODUCT. Linksys makes no warranty or representation, expressed, implied, or statu-

tory, with respect to its products or the contents or use of this documentation and all

accompanying software, and specifically disclaims its quality, performance, mer-

chantability, or fitness for any particular purpose. Linksys reserves the right to revise or

update its products, software, or documentation without obligation to notify any individ-

ual or entity. Please direct all inquiries to:

Linksys P.O. Box 18558, Irvine, CA 92623.

FCC STATEMENT

This Instant Broadband EtherFast Cable/DSL Router has been tested and complies

with the specifications for a Class B digital device, pursuant to Part 15 of the FCC

Rules. These limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses, and can radi-

ate radio frequency energy and, if not installed and used according to the instructions,

may cause harmful interference to radio communications. However, there is no guaran-

tee that interference will not occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception, which is found by turning

the equipment off and on, the user is encouraged to try to correct the interference by

one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment or device

• Connect the equipment to an outlet other than the receiver’s

• Consult a dealer or an experienced radio/TV technician for assistance

010

Instant Broadband Series EtherFast Cable/DSL Router

Introduction

The Linksys EtherFast Cable/DSL Router

Congratulations on your purchase of a Linksys Instant Broadband EtherFast

Cable/DSL Router. The EtherFast Cable/DSL Router is the perfect option to

connect a small group of PCs to a high-speed Broadband Internet connection

or to an Ethernet backbone. Configurable as a DHCP server, the EtherFast

Cable/DSL Router can act as the only externally recognized Internet gateway on

your local area network (LAN) and, with QoS, you can prioritize performance for

FTP, HTTP, and other services. The Router serves as an Internet firewall, shielding

your network from unwanted access and monitoring and filtering all incoming

data packets. The Router can also be configured to filter internal users' access to

the Internet.

Not only will all of your PCs now be able to enjoy your lightning-fast

Broadband Internet connection, they will also be able to share internal net-

work data. Add it all together and your small network will hum along faster

than you ever thought possible.

Features

• Connects to a Broadband modem or to an Ethernet backbone.

• Equipped with an 8-port 10/100 Switch. Manually select port eight as the

uplink port.

• Connects all of your PCs to the Internet with only one purchased IP address.

• Creates a firewall to protect your PCs from outside intruders.

• Configurable through any networked PC's web browser using Netscape or

Internet Explorer, versions 4.0 or higher.

• The switch dramatically speeds up your gaming and multimedia connec-

tions.

• QoS (Quality of Service) allows you to prioritize performance.

• Can simultaneously act as both a DHCP Server on the LAN and a DHCP

Client on the WAN.

• Compatible with virtually all standard Internet applications.

• Administrators can block specific interior users' Internet access.

• DMZ Host option provides two-way communication between one PC and

your Internet services.

Table of Contents

Introduction 1

The Linkys EtherFast Cable/DSL Router 1

Features 1

Package Contents 2

System Requirements 2

Getting to Know the

8-Port EtherFast Cable/DSL Router 3

The 8-Port Router’s Rear Panel 3

The Reset Button 4

The 8-Port Router’s Front Panel LEDs 4

Connecting The Cable/DSL Router to

Your Network 6

Overview 6

About Static & Dynamic IP Addresses 6

Connecting Everything Together & Booting Up 7

Configuring Your Network with

the Cable/DSL Router 9

Configuring The Cable/DSL Router 9

Configuring Your PCs to Connect to the Cable/DSL Router 12

The Cable/DSL Router’s Web-based Utility 15

Troubleshooting 30

Appendix 36

SNMP Functions 36

How to Ping Your ISP’s E-mail & Web Addresses 36

Installing the TCP/IP Protocol 39

Twisted-Pair Cabling 41

Crimping Your Own Network Cables 42

8-Port Router Specifications 43

Customer Support 44

EtherFast Cable/DSL Router

Getting to Know the 8-Port

EtherFast Cable/DSL Router

The 8-Port Router’s Rear Panel

The rear panel of the Router is where all of the Router’s connections are

made.

The 8-Port Router’s Ports

WAN The WAN (Wide Area Network) Port is where you

will connect your cable or DSL modem.

Ports 1-8 These eight LAN (Local Area Network) ports are

where you will connect networked devices, such as

PCs, print servers, remote hard drives, and any-

thing else you want to put on your network.

Uplink Toggle The Uplink Toggle allows you to manually select

Port Eight as an Uplink Port so that you can

expand your network by connecting to another

switch or hub. Uplinking to another Router, switch

or hub is done by simply selecting the crossed set-

ting and running a cable from Port Eight to the

device.

Power The Power Port is where you will connect the

included AC Power adapter.

Instant Broadband Series

Package Contents

• One Linksys Instant Broadband Cable/DSL Router

• One power adapter

• One power cord

• One user guide and registration card

System Requirements

• One RJ-45 Broadband Internet connection

• One PC with an installed 10Mbps, 100Mbps, or 10/100 Mbps Ethernet card

• TCP/IP network protocol for each PC

• UTP network cable with RJ-45 connector

• Microsoft Internet Explorer 4.0 or later, or Netscape Navigator 4.0 or later.

(5.0 and 4.7, respectively, are strongly recommended.)

EtherFast Cable/DSL Router

Full/Col Green. The Full/Col LED also serves two purposes. If this

LED is continuously illuminated, the connection made

through the corresponding port is successfully running in

Full Duplex mode. If the LED is flickering, the connection

is experiencing collisions. Infrequent collisions are normal.

If this LED is flickering too often, there may be a problem

with your connection. Check the Troubleshooting section on

page 30 if you think there is a problem.

100 Orange. The 100 LED illuminates when a successful

100Mbps connection is made through the corresponding

port.

The WAN Indicators

Link Green. The Link LED illuminates when a successful con-

nection is made between the Router and your Broadband

device or network.

Act Green. The Act LED flickers when the Router is sending or

receiving data over the broadband port.

Diag Red. The Diag LED illuminates when the Router goes

through its self-diagnosis mode during boot-up. It will turn

off upon successful completion of the diagnosis. If this

LED stays on for an abnormally long period of time, refer

to Troubleshooting on page 30.

Instant Broadband Series

The Reset Button

Briefly pressing the Reset Button will refresh the Router’s con-

nections, potentially clearing any jammed links.

Pressing the Reset Button and holding it in for a few seconds will

clear all of the Router’s data. This should be done only if you are experienc-

ing heavy routing problems, and only after you have exhausted all of the

other troubleshooting options. By resetting the Router, you run the risk of

creating conflicts between your PCs’ actual IP Addresses and what the Router

thinks their IP Addresses should be.You may be forced to reboot the entire

system(s).

If the Router locks up, simply power it down for 3 to 5 seconds by removing

the power cable from the Router’s Power Port. Leaving the power off for too

long could result in the loss of network connections.

The 8-Port Router’s Front Panel LEDs

The LAN Indicators

Power Green. The Power LED illuminates when the Router is pow-

ered on.

Link/Act Green. The Link/Act LED serves two purposes. If the LED

is continuously illuminated, the Router is successfully con-

nected to a device through the corresponding port (1-8). If

the LED is flickering, the Router is actively sending or

receiving data over that port.

EtherFast Cable/DSL Router

Instant Broadband Series

Dynamic IP Addresses A dynamic IP address is an IP address that is automati-

cally assigned to a client station (computer, printer, etc.) in a TCP/IP network.

Dynamic IP addresses are typically assigned by a DHCP server, which can be

a computer on the network or another piece of hardware, such as the Router.

A dynamic IP address may change every time your computer connects to the

network.

DHCP (Dynamic Host Configuration Protocol) DHCP is software that automati-

cally assigns IP addresses to client stations logging onto a TCP/IP network.

DHCP eliminates having to manually assign permanent IP addresses to every

device on your network. DHCP software typically runs in servers and is also

found in network devices such as Routers.

Connecting Everything Together & Booting Up

Once you are sure that you

have the above values on hand,

you can begin the Installation

and Setup of the Cable/DSL

Router.

1. Power everything down,

including your PCs, your

Cable or DSL modem and

the Router.

2. Connect a Network cable

from one of your PCs’

Ethernet ports to one of the

LAN Ports on the back of

the Router. Do the same with all the PCs you wish to connect to the

Router. (LAN Port 8 will become inactive if you toggle the Uplink port.)

3. Connect the network cable from your Cable or DSL modem to the WAN

port on the rear of the Router.

NNoottee::Some ISPs—most notably

some cable providers—configure

their networks so that you do not

have to enter a full Internet address

into your web browser or e-mail

application to reach your home page or receive

your e-mail. If your Internet home page address is

something very simple, such as “www”, rather

than “www.linksys.com”, or your e-mail server’s

address is something similar to “e-mail” or “pop3”,

rather than “pop.mail.linksys.com”, you won’t be

able to properly configure the Cable/DSL Router

until you determine the actual Internet addresses

of your Web and e-mail connections.

You mmuussttobtain this information prior to connect-

ing the Router to your network. You can obtain this

information by contacting your ISP, or turn to page

35 to learn how to

ping

for an IP address.

Connecting The Cable/DSL Router

to Your Network

Overview

Unlike a simple hub or switch, the setup of the Cable/DSL Router consists of

more than simply plugging everything together. Because the Router acts as a

DHCP server, you will have to set some values within the Router, and also

configure your networked PCs to accept the IP Addresses the Router chooses

to assign them.

You will need the following values from your ISP in order to install the

Cable/DSL Router:

• Your broadband-configured PC’s fixed Internet IP Address (if applicable)

• Your broadband-configured PC’s Computer Name and Workgroup Name

• Your Subnet Mask

•Your Default Gateway

•Your Primary DNS IP address

Whoever installed your broadband access should have left this information

with you. If not, call your ISP and they will be able to supply you with it.

About Static & Dynamic IP Addresses

Static IP Addresses A static IP address is an IP address permanently assigned

to a computer in a TCP/IP network. Static IP addresses are usually assigned

to networked devices which are consistently accessed by multiple users, such

as Server PCs, or printers. If you are using the Router to share your cable or

DSL Internet connection, contact your ISP to see if they have assigned your

home a static IP address.You will need that address during the Router’s con-

figuration.

}Only if applicable

EtherFast Cable/DSL Router

Configuring Your Network with the

Cable/DSL Router

Now that the Cable/DSL Router is wired into your net-

work, you can begin configuring your system.

1. Open your web browser and type http://192.168.1.1 in the

browser’s Address box. This number is the default IP address of the Router.

Press Enter.

2. A User Name and password prompt will appear. Leave the User Name

box empty and type admin (the default password) in the Password box.

Click OK.

Instant Broadband Series

4. Connect the power-supply cable to the Power port on the rear of the

Router, then plug the supplied AC power cable into a power outlet. Plug the

other end into the back of the power adapter.

• The Power LED will illuminate green as soon as the power adapter is

connected.

• The Diag LED will illuminate red for a few seconds while the Router

goes through its internal diagnostic test. The LED will turn off when the

self-test is complete.

5. Power on the Cable or DSL modem.

6. Press the Reset button on the back of the Router. Hold the button in for

three seconds, or until the Diag LED illuminates red. This restores the

router’s default settings.

The Hardware Installation is complete.

Configuring the Cable/DSL Router

NNoottee::

If the TCP/IP

protocol is not config-

ured on your PC, go

to page 38 of the

Appendix for TCP/IP

installation instruc-

tions now.

NNoottee::If you have previously enabled an Internet Sharing Proxy

Service on any of your PCs, you must disable it now.

• If you are running Netscape Navigator: Click EEddiitt>> PPrreeffeerreennccee

>> AAddvvaanncceedd>> PPrrooxxiieess> and click DDiirreeccttCCoonnnneeccttiioonnttootthheeIInntteerrnneett.

• If you are running Internet Explorer v5 or better, click SSttaarrtt>> SSeettttiinnggss>>

CCoonnttrroollPPaanneell>> IInntteerrnneettOOppttiioonnss>> CCoonnnneeccttiioonnss>> LLAANNSSeettttiinnggss. Remove

the checks from all three boxes. Click OOKKto continue.

EtherFast Cable/DSL Router

Instant Broadband Series

LAN IPAddress These values refer to your

internal network settings. Unless you have

specific internal needs, there should be no

reason to change these values. For the inter-

nal LAN, the default values are as follows.

• Private IP Address: 192.168.1.1

• Subnet Mask: 255.255.255.0

WAN IP Address These values refer to the

outside network you connect to every time

you access your Broadband Internet connec-

tion. Most Broadband ISPs assign their clients with a different IP address

each time they log on. If this is the case with your ISP, click Obtain an

IP Address Automatically and continue to step 5. If your ISP assigns

you a fixed IP address, click Specify an IP Address and enter the

address into the Subnet Mask, Default GatewayAddress and DNS

fields provided by the ISP.

To enable PPPoE support, choose Enable, and enter your User

Name and Password. If you do enable PPPoE, remember to

remove any existing PPPoE applications already on your comput-

er. (More information on PPPoE can be found on page 17.)

5. When you have properly configured the Setup page, click Apply, then

click Continue.

6. Choose the DHCP tab.

NNoottee::

If you have an existing

DHCP server on your LAN

and you don’t wish to use

the router as your new

DHCP server, you must

assign your router a static IP

address. The router’s IP

address must be compatible

with your existing network.

You can not have two DHCP

servers running on one LAN

at the same time.

3. The Cable/DSL Router’s Setup page will appear.

4. Configure the following values.

Router Name & Domain Name These fields allow you to supply a host

and domain name for the Router. Some ISPs require these names as

identification. You may have to check with your ISP to see if your

Broadband Internet service has been configured with a host and domain

name. In most cases, leaving these fields blank will work.

NNoottee::

The setup page

shown in the graphic

above may differ from

the one seen on your

router.

EtherFast Cable/DSL Router

Instant Broadband Series

3. In the Configuration window, select the TCP/IP protocol line that has

been associated with your network card/adapter. If there is no TCP/IP line

listed, go to page 39 to install the TCP/IP Protocol now.

4. Click the Properties button, then choose the IP Address tab. Select

Obtain an IP address automatically. Press OK.You have completed the

client settings.

7. Unless you already have a DHCP server on your internal network,

choose Enable from the DHCP Server field. By choosing Enable, you will

configure the Router to automatically assign IP addresses to each of your

PCs. In the Number of DHCP Users box, enter the number of PCs you plan

on networking to the Router, or leave it alone. Don’t forget to change this

number if, in the future, you add more PCs to your network.

8. Click Apply, then click Continue.

9. Reset the power on the cable or DSL modem, then restart the computer

so the computer can obtain the new Router information.

The Cable/DSL Router is now configured to your network. Please contin-

ue to the following section to complete your network setup.

Now that the Router is configured, you will have to

configure your other PCs to accept the IP addresses

that the Router will provide.

These instructions apply only to Windows 95 and Windows 98

machines. For TCP/IP setup under Windows NT, please refer to

your Windows NT manual.

1. Click the Start button, select Settings, then Control Panel.

2. Double-click the Network icon.

Configuring Your PCs to Connect to the Cable/DSL Router

NNoottee::

Make sure that a

Network Card or

Adapter has been suc-

cessfully installed into

each PC you plan on

configuring prior to

continuing.

EtherFast Cable/DSL Router

Instant Broadband Series

5. Click OK. Windows may ask for original Windows installation files.

Supply them as needed (i.e.: D:\win98, D:\win95,

c:\windows\options\cabs.)

6. Windows will ask you to restart the PC. Click Yes.

Repeat steps 1-6 for each PC on your network. When all of your PCs are

configured, the Cable/DSL Router Setup and Installation is complete.

If you would like, you may continue on to learn more about the Router’s

Web-based Utility.

The Cable/DSL Router’s Web-based

Utility

Quick & Easy Administration

The EtherFast Cable/DSL Router has an internal integrated-circuit chip with

no keyboard, monitor or mouse capabilities. Because of these limitations, an

administrative utility has been programmed into that chip. All router-based

administrative tasks are performed through this utility. The utility can be

accessed by any PC on the network by typing http://192.168.1.1 into

the PC’s web browser address window.

Upon entering the address into the web browser, a password request page will

pop up.

Leave the User Name field empty, but type “admin” into the Password field.

On the following pages you will find brief descriptions of each utility web-

page and each page’s more important functions. More detailed explanations

and instructions can be found by clicking each page’s Help button. To apply

any settings you’ve altered on any page, click the Apply button, then click

Continue. To clear any values you’ve entered on any page, click Cancel.

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