Linksys Instant Broadband Series Manuale utente

Instant Broadband™ Series

EtherFast®

Cable/DSLRouters

Use this User Guide to install the following Linksys product(s):

BEFSR41 ver. 2 EtherFast Cable/DSL Router with 10/100 4-Port Switch

BEFSRU31 EtherFast Cable/DSL Router with USB Port and 10/100

3-Port Switch

BEFSR11 ver. 2 EtherFast 1-Port Cable/DSL Router

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 will be

free from physical defects in material and workmanship for one year from the date of

purchase, when used within the limits set forth in the Specification section of this User

Guide. 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 ON HAND WHEN CALLING. When returning a

product, mark the Return Authorization number clearly on the outside of the package

and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT

BE PROCESSED WITHOUT PROOF OF PURCHASE. All customers located outside of

the United States of America and Canada shall be held responsible for shipping and

handling charges.

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 OFFERS NO REFUNDS FOR ITS PROD-

UCTS. Linksys makes no warranty or representation, expressed, implied, or statutory,

with respect to its products or the contents or use of this documentation and all accom-

panying software, and specifically disclaims its quality, performance, merchantability,

or fitness for any particular purpose. Linksys reserves the right to revise or update its

products, software, or documentation without obligation to notify any individual or entity.

Please direct all inquiries to:

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

FCC STATEMENT

The 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 radiate radio fre-

quency energy and, if not installed and used according to the instructions, 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 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 devices

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

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

UG-BEFSR11/41/U31-011220C-JL

Instant Broadband™Series EtherFast

Cable/DSL Routers

Configuring Your Network with the

Cable/DSL Router 33

Configuring PCs to Connect to the Cable/DSL Router 33

Configuring the Cable/DSL Router 35

The Cable/DSL Router’s Web-based Utility 38

Quick and Easy Router Administration 38

Setup 39

Password 41

Status 42

DHCP 43

Log 44

Security 45

Help 47

IP Filtering 49

IP Forwarding 51

Dynamic Routing 53

Static Routing 54

DMZ Hosting 56

MAC Address Cloning 57

Troubleshooting 58

Common Problems 58

Frequently Asked Questions 60

Glossary 64

Appendix 77

How to Ping Your ISP’s E-mail & Web Addresses 77

Installing the TCP/IP Protocol 80

Twisted-Pair Cabling 82

Crimping Your Own Network Cables 83

4-Port Router Specifications 84

4-Port Environmental Specifications 84

1-Port Router Specifications 85

1-Port Environmental Specifications 85

3-Port Router Specifications 86

3-Port Environmental Specifications 86

Customer Support 87

Table of Contents

Introduction 1

The Linksys EtherFast Cable/DSL Router 1

Features 1

Package Contents for the 4-Port Router (BEFSR41) 2

System Requirements 2

Package Contents for the 1-Port Router (BEFSR11) 3

System Requirements 3

Package Contents for the 3-Port Router (BEFSRU31) 4

System Requirements 4

Getting to Know the 4-Port

EtherFast Cable/DSL Router 5

The 4-Port Router’s Rear Panel 5

The 4-Port Router’s Front Panel LEDs 6

Getting to Know the 1-Port

EtherFast Cable/DSL Router 8

The 1-Port Router’s Rear Panel 8

The 1-Port Router’s Front Panel LEDs 9

Getting to Know the 3-Port

EtherFast Cable/DSL Router 11

The 3-Port Router’s Rear Panel 11

The 3-Port Router’s Front Panel LEDs 13

Connecting the Cable/DSL Router

to Your Network 15

Overview 15

LANs and WANs 15

IP Addresses: A Quick Lesson 16

Connecting Your Hardware Together & Booting Up 18

Uplinking: Connecting More Devices toYour Router 20

Installing the BEFSRU31’s USB Port Drivers 21

Installing the Windows 98 Driver 21

Installing the Windows 2000 Driver 25

Installing the Windows Millennium Driver 29

Installing the Windows XP Driver 31

EtherFast

Cable/DSL Routers

Package Contents for the 4-Port Router (BEFSR41)•One

•One EtherFast Cable/DSL Router with 10/100 4-Port Switch

•One Power Adapter

•One User Guide

•One Tech Helper CD-ROM

•One Quick Installation and Registration Card (not shown)

System Requirements

•One RJ-45 broadband Internet connection through a cable or DSL modem

•One PC with a 10 Mbps or 10/100 Mbps Ethernet card or adapter installed

•TCP/IP network protocol installed on each PC

•UTP CAT 5 network cables with RJ-45 connectors

•Internet Explorer 4.0 and higher or Netscape Navigator 4.0 and higher

(Version 5.5 for Internet Explorer and Version 4.7 for Netscape Navigator

highly recommended for optimal results)

Instant Broadband™Series

Introduction

The Linksys EtherFast®Cable/DSL Router

Congratulations on the purchase of the EtherFast Cable/DSL Router from

Linksys! The EtherFast Cable/DSL Router is the perfect solution for connect-

ing a network of PCs to a high-speed broadband Internet connection and to an

Ethernet network backbone. Configurable as a DHCP server for your network,

the EtherFast Cable/DSL Router is the only visible network device on the

Internet. The Router also serves as your Internet NAT firewall, protecting your

network’s PCs from being accessed by external users. All incoming data pack-

ets are monitored and filtered. The Router can also be configured to block

internal users’access to the Internet with IP Filtering, as well as to play Internet

games, video-conference, and much more.

Now all of your PCs can enjoy lightning-fast broadband Internet connections

and share internal network data. Link them all together and network faster than

you ever thought possible.

Features

•Connect a Broadband Modem to an Ethernet Network Backbone

• Equipped With a 3 or 4-Port 10/100 Switch (BEFSRU31 & BEFSR41 ver. 2

only)

•Connects Up to 254 PCs to the Internet with Just One IP Address

•NAT Firewall Protects Your PCs From Outside Intruders on the Internet

•ConfigurableThrough a PC’s Web Browser Using Netscape Navigator 4.0 or

Internet Explorer 4.0 or Higher

•Supports IPSec Pass-Through for Virtual Private Networking (VPNs)*

•Administer Your Router Remotely Over the Internet

•10/100 Switch Speeds Up Your Gaming and Multimedia Connections

(BEFSRU31 & BEFSR41 ver. 2 only)

•Configurable as a DHCP Server onYour Network

•Compatible with Virtually All Standard Internet Applications

•Administrators Can Block Specific Internal Users’ Internet Access

•DMZ Hosting Feature Enables Internet Multimedia Applications

Such as Video-Conferencing and Internet Gaming

*Limited IPSec Support

EtherFast

Cable/DSL Routers

Instant Broadband™Series

Package Contents for the 1-Port Router (BEFSR11)

•One EtherFast 10/100 1-Port Cable/DSL Router

•One Power Adapter

•One User Guide

•One Tech Helper CD-ROM

•One Quick Installation and Registration Card (not shown)

System Requirements

•One RJ-45 broadband Internet connection through a cable or DSL modem

•One PC with a 10/100 Mbps Ethernet card or adapter installed

•TCP/IP network protocol installed on each PC

•UTP CAT 5 network cables with RJ-45 connectors

•One hub or switch for multiple computers

•Internet Explorer 4.0 and higher or Netscape Navigator 4.0 and higher

(Version 5.5 for Internet Explorer and Version 4.7 for Netscape Navigator

highly recommended for optimal results)

Package Contents for the 3-Port Router (BEFSRU31)

•One EtherFast Cable/DSL Router with USB Port & 10/100 3-Port Switch

•One USB Cable (not shown)

•One 3.5" Floppy Disk for USB Setup (not shown)

•One Power Adapter

•One User Guide

•One Tech Helper CD-ROM

•One Quick Installation and Registration Card (not shown)

System Requirements

•One RJ-45 broadband Internet connection through a cable or DSL modem

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

a USB port

•TCP/IP network protocol installed on each PC

•UTP CAT 5 network cables with RJ-45 connectors

•Internet Explorer 4.0 and higher or Netscape Navigator 4.0 and higher

(Version 5.5 for Internet Explorer and Version 4.7 for Netscape Navigator

highly recommended for optimal results)

EtherFast

Cable/DSL Routers

Instant Broadband™Series

4-Port Router’s Front Panel LEDs

The LAN Indicators

Power Green.The Power LED lights up when the Router is powered

on.

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

is continuously lit, the Router is successfully connected to a

device through the corresponding port (1, 2, 3or 4). If the

LED is flickering, the Router is actively sending or receiving

data over that port.

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

LED is lit up continuously, the connection made through the

corresponding port is running in Full Duplex mode. If the

LED flickers, the connection is experiencing collisions.

Infrequent collisions are normal.

If this LED flickers too often, there may be a problem with

your connection. See the Troubleshooting section if you

encounter this problem.

100 Orange. The 100 LED lights up when a successful 100 Mbps

connection is made through the corresponding port.

If this LED does not light up, then your connection speed is

10 Mbps.

Getting to Know the 4-Port

EtherFast®Cable/DSL Router

The 4-Port Router’s Rear Panel

Your Router’s ports, where network cables are connected, are located on the

rear panel of your Router.

The 4-Port Router’s Ports

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

connect your cable or DSL modem.

Ports 1-4 These four LAN (Local Area Network) ports con-

nect to network devices, such as PCs, print servers,

and remote hard drives. If Port 1is being used, the

Uplink port will not work because these two shared

ports have internally shared wiring.

Uplink The Uplink port is used to expand your network by

connecting to another switch or hub. Uplinking to a

switch or a hub is done by simply running a cable

from the Uplink port to the other device. See the

Uplinking: Connecting More Devices to the

Router section for more on uplinking.

If the Uplink port is being used, Port 1 will not

work.

Power The Power port is where you will connect the

power adapter.

EtherFast

Cable/DSL Routers

Instant Broadband™Series

Getting to Know the 1-Port

EtherFast Cable/DSLRouter

The One-Port Router’s Rear Panel

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

are made, and where you can reset or configure the Router’s LAN port.

The One-Port Router’s Ports

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

connect your cable or DSL modem.

LAN The LAN (Local Area Network) port is where you

connect your Router to a PC, hub, or switch. If you

have more than one PC, connect an Ethernet hub or

switch to your Router, and then connect your PCs to

that hub or switch.

Power The Power port is where you will connect the

power adapter.

The WAN Indicators

Link Green. The Link LED lights up when a successful connec-

tion 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 WAN port (to the

Internet).

Diag Red. The Diag LED lights up when the Router goes through

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

upon successful completion of the diagnosis.

If this LED stays on for an abnormally long period of time,

see the Troubleshooting section.

The Reset Button*The Reset button can be used in one of two ways.

1. If your Router is having problems connecting to the Internet, press the Reset

button for just a moment with a paper clip or a pencil tip. This clears up any

jammed connections, and is similar to pressing the Reset button on your PC

to reboot it.

2. If you are experiencing extreme problems with your Router and have tried

all other troubleshooting measures, press the Reset Button and hold it down

until the red Diag LED on the front panel turns on and off completely.

This will restore factory defaults and clear all of the Router’s settings, includ-

ing the IP addresses you entered.

* The Reset Button is located on the front panel of the 4-Port Router, and the rear panels of the 3-

Port Router and the 1-Port Router.

EtherFast

Cable/DSL Routers

is continuously lit, the Router is successfully connected to a

device through the LAN port. If the LED is flickering, the

Router is actively sending or receiving data through the LAN

port.

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

LED remains lit, a LAN port connection is being successful-

ly maintained. If the LED flickers, the connection is experi-

encing collisions. Infrequent collisions are normal.

If this LED flickers too often, there may be a problem with

your connection. See the Troubleshooting section if you

encounter this problem.

10/100 Orange. The 10/100 LED lights up when a successful

100Mbps connection is made through the corresponding

port.

If a connection is running at 10Mbps, the 10/100 LED will

not light up.

The WAN Indicators

Link Green. The Link LED lights up when a successful connec-

tion 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 WAN port.

Diag Red. The Diag LED lights up when the Router goes through

its self-diagnostic mode. It will turn off upon successful

completion of the diagnosis.

If this LED stays on for an abnormally long period of time,

see the Troubleshooting section.

Instant Broadband™Series

Buttons & Switches

The Reset Button Details on the Reset button are found in the Getting

to Know the 4-Port EtherFast Cable/DSL Router

section.

The Crossover Switch

When“uplinking,” or connecting two pieces of network hardware together,

such as a hub and a switch, a general rule of thumb is to plug one end of a

network cable into a straight-through port, and the other end into a crossover

port. Standard ports are straight-through ports, and uplink ports are crossover

ports.

The

Port

The LAN Indicators

Power Green. The Power LED lights up green when the Router is

powered on.

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

NNoottee::The diagram above is for reference purposes only.

Every network is different. If you do not make a connec-

tion to a hub or switch by using the settings above,

change the position of the Crossover Switch.

The 1-Port Router’s Front Panel LEDs

This USB icon denotes the presence of a USB port or connector.

Your 3-Port Router comes with a USB cable that has two different types of con-

nectors. Type A, the master connector, is shaped like a rectangle and plugs into

your PC’s USB port. Type B, the slave connector, resembles a square and con-

nects to the USB port on the rear panel of your Router.

EtherFast

Cable/DSL Routers

Instant Broadband™Series

Getting to Know the 3-Port

EtherFast Cable/DSLRouter

The 3-Port Router’s Rear Panel Ports

The 3-Port Router’s Ports

Ports 1-3 These three LAN ports connect to your PCs, hubs,

switches, print servers, or any other device with an

Ethernet port.

Uplink The Uplink port connects to another hub or switch

for port expansion when you run out of open ports

for your network devices. Since the Uplink port

and the standard port right next to it share internal

wiring, you can only use one of the two ports at a

time.

WAN This WAN port connects to your cable or DSL

modem. Your modem connection will not work

from any other port.

Power The Power port is where you will connect the power

adapter.

USB The USB port (Type B - slave) can connect to a

USB-ready PC or a USB hub. This allows you to

enjoy an immediate, plug-and-play connection

without even installing a network adapter for your

PC. To work with USB ports, your PC must be run-

ning Windows 98, 2000, Millennium, or XP.

USB Compatibility with Your PC

To use the USB port on the 3-Port Router, you must have Windows 98, 2000,

Millennium, or XP installed on your PC. USB cannot run in a Windows 95 or NT

environment.

Also, your PC must have a USB port installed and enabled. Some PCs may have a dis-

abled USB port. If your port doesn’t seem to be working, there may be jumpers on the

motherboard or a menu option in the BIOS to enable a PC’s USB port.

Other motherboards have USB interfaces, but no ports. You can install your own USB

port and attach it to your PC’s motherboard using hardware purchased at retail com-

puter stores. See your PC’s User Guide for instructions.

USB Type A USB Type B

USB ports do not work on PCs running

Windows 95 or Windows NT.

EtherFast

Cable/DSL Routers

USB The USB LED lights up when the USB port is successfully

connected to a PC, USB hub, or other USB device.

The WAN Indicators

Link Green. The Link LED lights up when a successful connec-

tion 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 WAN port.

Diag Red. The Diag LED lights up when the Router goes through

its self-diagnostic mode. It will turn off upon successful

completion of the diagnosis.

If this LED stays on for an abnormally long period of time,

see the Troubleshooting section.

Instant Broadband™Series

Buttons

The Reset Button Details on the Reset button are found in the Getting

to Know the 4-Port EtherFast Cable/DSL Router

section.

The 3-Port Router’s Front Panel LEDs

The LAN Indicators

Power Green. The Power LED lights up green when the Router is

powered on.

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

is continuously lit, the Router is successfully connected to

a device through the corresponding RJ-45 port (1, 2, or 3). If

the LED flickers, then that port is sending or receiving data

to and from the network.

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

LED is continuously lit, the connection made through the

corresponding port is successfully running in Full Duplex

mode. If the LED is flickering, the connection is experien-

cing collisions. Infrequent collisions are normal.

If this LED flickers too often, there may be a problem with

your connection. See the Troubleshooting section if you

have problems.

100 Orange. The 100 LED lights up when a successful 100Mbps

connection is made through the corresponding port. If this

LED does not light up, then your connection speed is

10 Mbps.

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