Linksys BEFSR11, BEFSR41 v2, BEFSRU31, EtherFast NULL User Manual

Instant Broadband™ Series

EtherFast

Cable/DSL Routers

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

BEFSRU31 EtherFast Cable/DSL Router with USB Port and 10/100 3-Port Switch BEFSR41 v2 EtherFast Cable/DSL Router with 10/100 4-Port Switch BEFSR11 EtherFast 1-Port Cable/DSL Router

User Guide

COPYRIGHT & TRADEMARKS Copyright © 2000 Linksys, All Rights Reserved. Instant Broadband is a registered trademark of Linksys. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property 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 (1) 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 ON HAND WHEN CALLING. When returning a product, mark the Return Authorization number clearly on the outside of the package and include 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 PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS OFFERS NO REFUNDS FOR ITS PRODUCTS. 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 accompanying 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 found to comply with the limits 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 frequency 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 device

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

• Consult a dealer or an experienced radio/TV technician for assistance 009

Instant Broadband Series EtherFast Cable/DSL Routers

Configuring Your Network with the Cable/DSL Router 33

Configuring Y our Cable/DSL Router 34 Configuring Your PCs to Connect to the Cable/DSL Router 36

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

Quick and Easy Router Administration 38 Setup 39 Password 41 Status 43 DHCP 44 Help 45 IP Filtering 47 IP Forwarding 49 Dynamic Routing 50 Static Routing 51 DMZ Hosting 53 Logging 54

Troubleshooting 55

Common Problems 55 Frequently Asked Questions 57

Appendix 61

How to Ping Your ISP’s E-mail & Web Addresses 61 Installing the TCP/IP Protocol 64 Twisted-Pair Cabling 66 Crimping Your Own Network Cables 67 4-Port Router Specifications 68 Environmental Specifications 68 1-Port Router Specifications 69 Environmental Specifications 69 3-Port Router Specifications 70 Environmental Specifications 70 Customer Support 71

Table of Contents

Introduction 1

The Linksys EtherFast Cable/DSL Router 1 Features 1 Package Contents for the 4-Port Router 2 Network Requirements 2 Package Contents for the 1-Port Router 3 Network Requirements 3 Package Contents for the 3-Port Router 4 Network 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 USB Icon 12 The 3-Port Router’s Front Panel LEDs 13

Connecting Your 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 to Your Router 20

Configuring Your Router’s USB Port 21

Windows 98 Configuration 21 Windows 2000 Configuration 25 Windows Millennium Configuration 29

EtherFast Cable/DSL Routers

Package Contents for the 4-Port Router

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

• One Power Adapter

• One Power Cord

• One User Guide and Registration Card

Network Requirements

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

• One PC with a 10Mbps 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 Inter net Explorer and Version 4.7 for Netscape

Navigator are highly recommended for optimal results.

Instant Broadband Series

Introduction

The Linksys EtherFast Cable/DSL Router

Congratulations on the purchase of your EtherFast Cable/DSL Router from Linksys! The EtherFast Cable/DSL Router is the perfect solution for connecting a network of PCs to a high-speed broadband Internet connection and to an Ethernet network backbone. Configurable as a DHCP server, the EtherFast Cable/DSL Router is the only visible network device on the Internet. The Router also serves as your Internet firewall, protecting your network’s PCs from being accessed by external users. All incoming data packets are monitored and filtered. Your Router can also be configured to block internal users' access to the Internet with IP Filtering, as well as play Internet games, videoconference, and much more.

Now all of your PCs can enjoy lightning-f ast broadband Inter net connections and share internal network data. Link it all together and your network will blaze along faster than you ever thought possible.

Features

• Connects to a Broadband Modem and to an Ethernet Network Backbone

• Equipped With a 3 or 4-Por t 10/100 Switch (BEFSRU31 & BEFSR41 v2

only)

• Connects All of Your PCs to the Internet with Just One IP Address

• Firewall Protects Your PCs From Outside Intruders on the Internet

• Configurable Through a PC’s Web Browser Using Netscape Navigator 4.0

or Internet Explorer 4.0

• 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 v2 only)

• Configurable as a DHCP Server on Your Network

• Compatible with Virtually All Standard Inter net Applications

• Administrators Can Block Specific Internal Users' Inter net Access

• DMZ Hosting Feature Enables Internet Multimedia Applications

Such as Video-Conferencing and Internet Gaming

EtherFast Cable/DSL Routers

Package Contents for the 3-Port Router

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

• One USB Cable

• One 3.5” Floppy Disk for USB Setup

• One Power Adapter

• One User Guide and Registration Card

Network Requirements

• One RJ-45 broadband Internet connection, with 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 Inter net Explorer and Version 4.7 for Netscape

Navigator are highly recommended for optimal results.

Instant Broadband Series

Package Contents for the 1-Port Router

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

• One Power Adapter

• One User Guide and Registration Card

Network Requirements

• One RJ-45 broadband Internet connection, with 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

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

Version 5.5 for Inter net Explorer and Version 4.7 for Netscape

Navigator are 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 pow-

ered on.

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

is continuously lit up, the Router is successfully connected to a device through the corresponding port (1, 2, 3 or 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 have problems.

100 Orange. The 100 LED lights up when a successful

100Mbps connection is made through the corresponding port.

If this LED is not lighting up, then your connection speed is 10 Mbps.

BEFSR41 v2 shown above

Getting to Know the 4-Port EtherFast Cable/DSL Router

The 4-Port Router’s Rear Panel

Your Router’s por ts, 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) por ts con-

nect to network devices, such as PCs, print servers, and remote hard drives. If port 1 is being used, the Uplink port will not work- 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 another Router, switch or a hub is done by simply running a cable from the Uplink port to the other device. See page 10 for more on uplinking.

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

Power The Power por t is where you will connect the

power adapter. Be sure to connect the power cord to the power adapter before plugging it in.

BEFSR41 v2 shown above

EtherFast Cable/DSL Routers

Instant Broadband Series

Getting to Know the 1-Port EtherFast Cable/DSL Router

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, then connect your PCs to that hub or switch.

Power The Power por t connects to the power adapter.

BEFSR11 shown above

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 Orange. The Diag LED lights up when the Router goes

through its self-diagnosis mode during every boot-up, and also when you click Applyto update any changes made in the Router’s Utility. 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 in 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 in and hold it down until the orange Diag LED on the front panel turns on and off completely.

This will restore factory defaults and clear all of the Router’s settings, including the IP addresses you entered.

Leaving the power off for too long could result in the loss of network connections.

See also restoring factory defaults through the Web-based Utility in the Cable/DSL Router’s Web-based Utility section.

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

3-Port Router and the 1-Port Router.

EtherFast Cable/DSL Routers

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

is continuously lit up, 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 successfully maintained. 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 Troubleshooting on page 56 if you encounter problems.

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 test during boot-up. It will turn off upon successful completion of the diagnosis. The Diag LED also lights up when you press the Reset button or click Apply to save any changes made in the Web-based Utility.

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 on page 7.

The Crossover Switch The Crossover Switch (X II) toggles the LAN port

between crossover mode (X) and straight-through mode (II).

If you are connecting the Router’s LAN Port directly to a PC or an uplink port on a hub or switch, choose the crossover (X) mode.

If you are connecting the Router’s LAN por t to a standard port on a hub or switch, choose the straight-through (II) mode.

The 1-Port Router’s Front Panel LEDs

The LAN Indicators

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

powered on.

NNoottee::

If you’re not sure which mode to use on the Crossover Switch, check the

LLAANN

port’s

LLiinnkk

LED on the front panel of the Router.

If the

LLiinnkk

LED does not light up after the Router is fully installed and config-

ured, try switching the Crossover Switch to the other side. If the

LLiinnkk

LED lights

up, you know that your mode setting is correct.

BEFSR11 shown above

When“

uupplliinnkkiinngg

,” or connecting two pieces of network hardware together, such

as a router and a switch,

ggeenneerraall

rruullee ooff tthhuummbb

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.

EtherFast Cable/DSL Routers

Instant Broadband Series

The USB Icon

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 connectors. 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 connects to the USB port on the rear panel of your Router.

1, 2, 3 These three LAN ports connect to your PCs, hubs,

switches, print servers, or any other device with an Ethernet port.

Uplink The Uplink por t 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 por t connects to your cable or DSL

modem. Your modem connection will not work

from any other port.

Power The Power port connects to the power adapter.

Getting to Know the 3-Port EtherFast Cable/DSL Router

The 3-Port Router’s Rear Panel Ports

The 3-Port Router’s Ports

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 configuring a network adapter for your PC. To work with USB ports, your PC must be running Windows 98, 2000, or Millennium.

BEFSRU31 shown above

USB Compatibility with Your PC

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

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.

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 Orange. The Diag LED lights up when the Router goes

through its self-diagnostic test during boot-up. It will turn off upon successful completion of the diagnosis. This LED will also light up when you make changes in the Utility and click Apply to save them.

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 on page 7.

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 up, 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 purpos-

es. If this LED is continuously lit up, 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 flickers too often, there may be a problem with your connection. See the Troubleshooting section if you have problems.

EtherFast Cable/DSL Routers

Instant Broadband Series

Your Router’s firewall (NAT) protects your network of PCs with security so users on the public, Internet side cannot “see” your PCs. This is why your internal LAN, or network, is private.

Remember that your Router’s ports connect to two sides: your 10/100 LAN port(s) and the Internet WAN port. The LAN port(s) transmit data at 10Mbps or 100 Mbps, whereas the broadband port, or WAN port, transmits data at 10 Mbps, because 10Mbps is currently the maximum speed for cable and DSL service.

IP Addressing: A Quick Lesson

What’s an IP Address?

Every device on an IP-based network, including PCs, print servers, and routers, requires an IP address to identify its “location,” or address, on the network. Since the Internet is simply one huge global network, every PC that logs on to the Internet also requires an IP address.

There are two ways of assigning an IP address to your network devices.

Static IP Addresses

A static IP address is a fixed IP address that you assign manually to a PC or other device on the network. Since a static IP address remains valid until you disable it, static IP addressing ensures that the device you assigned it to will always have that same IP address. Static IP addresses are commonly used with network devices such as server PCs or print servers.

If you use your Router to share your cable or DSLInternet connection, contact your ISP to find out if they have assigned a static IP address to your account. If so, you will need that static IP address when configuring your Router.

Connecting the Cable/DSL Router to Your Network

Overview

Unlike a hub or a switch, the Cable/DSL Router’s setup consists of more than simply plugging hardware together. Since the Router acts as a DHCP server, you will have to set some values for the Router and also configure your networked PCs to accept the IP addresses that the Router assigns them.

You will need the following data from your ISP (Internet Service Provider) to install the Cable/DSL Router:

•Your broadband-configured PCs’ Computer Name and Workgroup Name

• Your broadband-configured PCs’fixed

Internet IP Address

• Your Subnet Mask

•Your Default Gateway

•Your Primary DNS Server IP address(es)

The installation technician from your ISP should have left this information with you after the installation. Or, you can call your ISP to request the data.

Once you have the above values, you can begin the Installation and Setup of your EtherFast Cable/DSL Router.

LANs and WANs

Simply put, a router is a network device that connects two networks together.

In this instance, your EtherFast Cable/DSL Router connects your Local Area

Network (LAN), or the group of PCs in your home or office, to the Wide Area Network (WAN), that is, the Internet. Your Router processes and regu-

lates the data that travels between these two networks.

Think of your Router as a network device with two sides: the first side is made up of your private Local Area Network (LAN) of PCs, which this User Guide sometimes calls the “internal LAN.” The other, public side is the Internet, or the Wide Area Network (WAN), outside of your home or office.

}

Only if applicable

Since your Router is a device that connects two networks, it needs two IP addresses - one for the LAN side, and one for the WAN side. In this User Guide, you’ll see references to the “WAN IP address” and the “LAN IP address.”

Since the Router has firewall security (NAT), the only IP address that can be seen from the Internet for your network is the Router’s WAN IP address.

However, even this WAN IP address for the Router can be blocked, so that your Router and network seem invisible to the Internet - see Blocking WAN Requests on page 48.

IP stands for Internet Protocol.

EtherFast Cable/DSL Routers

Connecting Your Hardware Together and Booting Up

1. Before you begin, make sure that all of your hardware is powered off,

including your Router, PCs, hubs, switches, and the cable or DSL modem.

2. A. If you have the 4-Por t Cable/DSL Router, connect one end of a net- work cable to one of the LAN ports (labeled 1, 2, 3, or 4) on the back of the Router, and the other end into a standard port on a network device, e.g., a PC, print server, hub, or switch. See page 66 for details on network cabling.

Repeat the above step to connect more PCs or network devices to the Router.

2. B. If you are connecting the 1-Port Router to just one PC, plug one end of a network cable into the Router’s LAN port and the other end into the PC’s network adapter port. Set the Crossover Switch to crossover mode (X). If the crossover mode does not light up a Link LED, see page 10.

If you are connecting the 1-Por t Router to a hub or switch, plug one end of a network cable into the Router’s LAN port, and the other end into to a standard port on your network’s hub or switch. Set the LAN port’s Crossover Switch to its straight-through (II) mode.

If your hub or switch has no more standard ports available, connect the Router using its LAN port to the Uplink por t on the hub or switch. Set the Crossover Switch to straight-through mode (II) for this set-up.

2. C. If you have the 3-Port Cable/DSL Router, connect one end of a net- work cable from the one of the Router’s LAN ports (labeled 1, 2, or 3) to a port on a PC, hub, switch, or other network device.

The 3-Port Router features one USB plug-and-play port that connects instantly to any USB-ready desktop or notebook PC. This allows you to connect to and access your Router without even configuring any network cards. Use the enclosed USB cable to connect your PC to the Router: the Type A end connects to your PC’s USB port, while Type B connects to the Router’s USB por t.

A standard port is any port other than the WAN por t

and the Uplink port. It’s a straight-through por t.

Instant Broadband Series

Dynamic IP Addresses

A dynamic IP address is automatically assigned to a device on the network, e.g., PCs and print servers. These IP addresses are called “dynamic” because they are only temporarily assigned to the PC or device. After a certain time period, they expire.

If a PC logs on to the network (or the Internet) and its dynamic IP address has expired, the DHCP server will assign it a new dynamic IP address.

DHCP (Dynamic Host Configuration Protocol) Servers

PCs and other network devices using dynamic IP addressing are assigned a new IP address by a DHCP server. DHCP frees you from having to assign IP addresses manually every time a new user is added to your network.

DHCP servers can either be a designated PC on the network or another network device, such as the Cable/DSL Router.

By factory default, DHCP is enabled on your Router. If you already have a DHCP server running on your network, you must disable one of the two DHCP servers. If you run more than one DHCP server on your network, you will experience network errors, such as conflicting IP addresses.

To disable DHCP on your Router, see page 44.

ing Your Hardware Toging Up

Even if you assign a static IP address to a PC, that PC can still use DHCP’s dynamic IP addressing.

If the dynamic IP addressing fails to provide a dynamic IP address for any reason, that PC automatically uses its default static IP address.

EtherFast Cable/DSL Routers

Uplinking: Connecting More Devices to Your Router

If your Router’s LAN por ts are all full and you still have PCs and/or devices to connect, add a hub or a switch to your Router.

To do so, use the Router’s Uplink port to connect to a standard port on a hub or switch. If you have a PC/device connected to the port right next to the Uplink port (on the 3- and 4-Port Routers), disconnect that PC/device and plug it into an open port on the new hub or switch.

Since the Uplink port shares inter nal wiring with the port right next to it, you can only use only one of these two por ts at a time: these por ts are called shared ports.

If your new hub or switch also has an Uplink port, it too can be uplinked when you next run out of ports, and so on.

Use the Router’s Uplink port to connect to a standard port on a hub or switch. This leaves you with new, open ports on the hub or switch, to which you can add more PCs and/or network devices.

See www.linksys.com for complete product lines of 10/100 Mbps hubs and

switches.

Instant Broadband Series

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

port on your Router’s rear panel. This is the only port that will work for your modem connection.

4. Connect the power adapter to the Power port on the rear panel of the

Router, then plug the power adapter into a power outlet.

• The Power LED on the front panel will light up green as soon as the

power adapter is connected properly.

• The Diag LED will light up red for a few seconds when the Router goes

through its self-diagnostic test. This LED will turn off when the self-test is complete.

5. Power on the cable or DSLmodem.

6. Press the Reset button on the Router’s front panel with a paper clip or a pencil. Hold the button in until the Diag LED lights up and then tur ns off. This will restore the Router’s factory def ault settings.

Your Router’s hardware installation is now complete!

Continue with the next section to configure

your Router and PCs.

Technical Checkpoint:

Did you remember to check for Link LEDs for all your connections?

If all of your Link LEDs are not lighting up, make sure that all your cables are securely plugged in, and that all of your hardware is powered on properly.

It is highly recommended that you plug your Router into a power strip with surge protection.

EtherFast Cable/DSL Routers

3. Select “Search for the best driver for your device (Recommended).”

Click Next.

4. Select “Floppy disk drives” and click Next to start the search for your

driver.

Instant Broadband Series

Configuring Your Router’s USB Port

Now that all of your Router’s hardware is connected together, you must enable the PC that is connected to the Router through its USB port.

Since your Router acts as a network adapter for your PC, there’s no need for you to install a USB adapter for that PC. Just follow the directions below to enable your PC’s USB connection to the Router:

• If you are running Windows 98, continue on this page, below.

• If you are running Windows 2000, go to page 26.

• If you are running Windows Millennium, go to page 29.

You can also connect your Router’s USB port to other USB devices besides USB-ready PCs, such as USB hubs.

USB Installation for Windows 98

1. Start up your PC in Windows 98.

2. Windows will display a message saying that it has detected new hardware.

Click Next.

After you finish this conf iguration, make sure that TCP/IP is installed on your PC(s). For instructions on installing TCP/IP, see page 65.

EtherFast Cable/DSL Routers

7. Windows will notify you that it has completed copying the driver files to

your PC. Click Finish.

8. Windows will ask you if you want to restart your PC. Click Yes so your

new installation will take effect.

If it does not ask you, go to Start, Shut Down, then select Restart and click Yes.

Your USB installation is now complete.

Go to page 33 to configure your network

to work with the Router.

Instant Broadband Series

5. A new window will appear, saying that Windows is now ready to install the best driver for this device. Click Next to continue.

6. Windows will begin copying the f iles to your PC. Do not click Cancel or press the Esc key during this process.

If Windows asks for your Windows operating system files before copying, direct your PC to the location of those files, e.g, c:\windows\options\cabs, or D:\Win98 (assuming that your CD-ROM drive is named D).

EtherFast Cable/DSL Routers

Instant Broadband Series

3. When Windows asks you where to search for driver files, select “Floppy

Disk Drives” and click Next.

4. Windows will show a message saying that it has found the driver files.

Click Next.

USB Installation for Windows 2000

1. Start up your PC in Windows 2000. Windows will show a message

notifying you that the PC has found new hardware. Windows’ Hardware

Wizard will show a message to say that it is ready to star t installing the

driver files to your PC. Click Next.

2. Select “Search for a suitable driver for my device (Recommended)” and

click Next.

EtherFast Cable/DSL Routers

6. Windows will display a message saying that it has finished installing the

driver files on your PC. Click Finish.

7. Go to Start, Settings, Control Panel, and Network to display the screen

below. Make sure that TCP/IP is installed for this PC.

Your USB installation is now complete.

Go to page 33 to configure your network

to work with the Router.

Instant Broadband Series

4. Windows will ask you if you want to continue with the installation.

Click Yes.

5. Windows will copy the driver files to your PC.

EtherFast Cable/DSL Routers

3. Windows will notify you that it is ready to install the driver file on to your PC. Select “Specify a location” and type in “a:\Win98” in the field. Click Next to continue.

4. Windows will complete its search for driver f iles. Click Next to begin

installing the files.

Instant Broadband Series

USB Installation for Windows Millennium

1. Start up your PC in Windows Millennium.

2. Windows will notify you that new hardware has been detected (shown above). Select “Automatic search for a better drive (Recommended)” and click Next.

EtherFast Cable/DSL Routers

7. When your PC is finished restarting, click on Start, Settings, Control Panel, and Network. Make sure that TCP/IP is installed for your PC.

Your USB installation is now complete.

Go to page 33 to configure your network

to work with the Router.

Instant Broadband Series

5. Windows will display a message saying that it has finished installing the

driver files on your PC. Click Finish.

6. Windows will ask you to restart your PC. Click Ye s .

EtherFast Cable/DSL Routers

Instant Broadband Series

3. A username and password prompt will appear. Leave the User Name

field empty and type admin, which is the default password, into the Password box. Click OK.

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

5. Configure the following values:

Host Name & Domain Name These fields allow you to give a Host and

Domain name for the Router. Some ISPs require these names as identification. You may have to check with your ISPto see if your broadband Internet service has been conf igured with Host and Domain names. In most cases, leaving these two fields blank will still work.

Configuring Your Network with the Cable/DSL Router

Configuring the Cable/DSL Router

Now that your Cable/DSLRouter is connected to your network, you can begin configuring your Router.

1. Make sure that each of your PCs has the TCP/IP protocol configured. Otherwise, see page 64 now to do so, before configuring your Router.

2. Open your web browserand type http://192.168.1.1 in the browser’s Address field. This number is the default IP address of your Router. Press Enter.

IIMMPPOORRTTAANNTT!!

If you have previously enabled any

IInntteerrnneett--sshhaarriinngg

pprrooxxyy sseerrvveerr ssooffttwwaarree

on any of your PCs, you must disable it now. Some examples of proxy server software are Internet LanBridge, Wingate, and Sygate. To disable your proxy server software:

• If you are running Netscape Navigator: Click

EEddiitt

PPrreeffeerreenncceess

AAddvvaanncceedd

PPrrooxxiieess

> and click

DDiirreecctt CCoonnnneeccttiioonn ttoo tthhee IInntteerrnneett

• If you are running Internet Explorer, click

SSttaarrtt

SSeettttiinnggss

CCoonnttrrooll

PPaanneell

IInntteerrnneett OOppttiioonnss

CCoonnnneeccttiioonnss

LLAANN SSeettttiinnggss

. Remove

the checks from all three boxes. Click

OOKK

to continue.

Also, you must disable any

IInntteerrnneett lloogg--oonn ssooffttwwaarree

(such as Ivasion

Winpoet or Enternet 300) and any

ffiirreewwaallll ssooffttwwaarree

(such as

ZoneAlarm and Watchdog) on all of your PCs.

EtherFast Cable/DSL Routers

Instant Broadband Series

10. Reset the power on the cable or DSL modem, then restart the PC so

the new Router settings will take effect.

Your Cable/DSL Router is now configured on your network.

Continue on to the next section to complete your network setup.

Configuring PCs to Connect to the Cable/DSL Router

Now that your Router is configured, you will have to configure your other PCs to accept the IP addresses that your Router will provide.

These instructions apply only to Windows 95 and Windows 98 machines. For TCP/IP setup under Windows NT, see your Windows NT manual.

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

2. Double-click on the Network icon.

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

with your network card/adapter. If there is no TCP/IP protocol line listed for your card/adapter, go to page 64 to install the TCP/IP protocol now.

NNoottee::

Make sure that a network card or adapter has been successfully

installed in each PC you plan on configuring before continuing.

LAN IP Address 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 internal LAN side, the Router’s def ault 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 external network (the Internet)

you connect to every time you access your Internet connection.

Most broadband ISPs assign their clients to a different IP address each time they log on. If this is the case with your ISP, select Obtain an IP Address A utomatically and go to step 5.

If your ISP assigns you a fixed, static IPaddress, select Specify an IP

Address and enter the appropriate values into the IP Address, Subnet Mask, Default Gateway Address and DNS (Required) fields provided

by your ISP.

If you need to enable PPPoE support, choose Enable. If you do enable PPPoE, remember to remove any existing PPPoE applications already on any of your PCs. More information on PPPoE can be found on page 41.

6. When you have properly configured the Setup window, click Apply, then click Continue.

7. Select the DHCP tab.

8. DHCP is already enabled on your Router by factory default. By leaving the setting on Enable, the Router is configured to automatically assign IP addresses to each of your PCs.

Optional: In the Number of DHCP Users field, enter the number of PCs you plan on networking to the Router. If you add more PCs to your network in the future, don’t forget to change this value.

If you already have a DHCPserver on your network, select Disable for the DHCP Server option. If you do so, you must assign your Router a new static IP address.

9. Click Apply, then click Continue.

EtherFast Cable/DSL Routers

Instant Broadband Series

4. Click the Properties button, then choose the IP Address tab. Select Obtain an IP address automatically. Click OK.

You have now completed the PC’s client settings, so it can connect to the Router.

5. Click OK. Windows may ask for original Windows installation files. Direct your PC to the location of the files, e.g., D:\win98 or D:\win95, c:\windows\options\cabs.

6. Windows will ask you to restart the PC. Click Ye s.

7. Repeat steps 1-6 for each PC on your network.

When all of your PCs are configured, the Cable/DSL Router

Setup and Configuration is complete.

If you want to learn more about the Router’s Web-based

Utility,proceed to the next section.

The Cable/DSL Router’s Web-based Utility

Quick & Easy Router Administration

The EtherFast Cable/DSLRouter uses a web browser-based administrative Utility that is programmed into a chipset. All administrative tasks for the Router are performed through this Setup Utility. The Utility can be accessed through any PC on the network by typing http://192.168.1.1 into the web browser’s Address field (even if that PC does not yet have Internet access), shown below.

After entering the address value into the web browser, a password request page will pop up, shown below.

Leave the User Name field blank and type “admin” into the Password field.

In this section, you’ll find brief descriptions of each web page in the Utility and each page’s key functions. More detailed explanations and instructions can be found by clicking each page’s Help button in your Router’s Setup Utility.

To apply any settings you’ve changed on a page, click the Apply button, then click Continue. To clear any values you’ve entered on any page, click Cancel.

EtherFast Cable/DSL Routers

Instant Broadband Series

• WAN IP Address This is the IP address that your Router has, when seen

from the external WAN, or the Internet.

• MAC Address Cloning Click on "MAC Address" (next to WAN IP Address) to display your Router's MAC address, which is a 12-digit code assigned to a unique piece of hardware for identification, like a social security number. Some ISPs require that you register the MAC address of your network card/adapter, which was connected to your cable or DSL modem during installation. If your ISPs require MAC address registration, find your adapter's MAC address by doing the following:

• If you are running Windows 98:

Go to Start, Run, type in "command," and press Enter. At the DOS prompt, type "winipcfg."

• If you are running Windows 2000 or Millennium:

Go to Start, Run, type in "command," and press Enter. At the DOS prompt, type "ipconfig/all." The"Physical Address" with 12 digits is your Router’s MAC address.

Enter those 12 digits into the fields below, and click Apply. This “clones” your network adapter’s MAC address onto your Router, and prevents you from having to call your ISP to change the registered MAC address to the Router’s MAC address.

• Subnet Mask This is the Router’s Subnet Mask, as seen by exter nal users on the Internet (including your ISP). If you select “Obtain an IP address automatically,” your ISP will assign these values.

Setup

The Basic Setup screen is the first screen you see when you access the Setup Utility. If you have already installed and set up your Router, you have already seen this screen and properly configured all of the screen’s values.

• Host Name This entry is required by some ISPs.

• Domain Name This entry is required by some ISPs.

• Firmware V er sion This entry shows the version and date of the firmware

you are using. Future versions of the Router’s fir mware will be posted and available for download on the Linksys Web site.

• LAN IP Address and Subnet Mask The IP Address and Subnet Mask of

the Router as it is seen on the internal LAN. The default value is

192.168.1.1 for the IP address and 255.255.255.0 for the Subnet Mask.

NNoottee::

The Setup page in this picture may differ slightly from the one you see.

NNoottee::

This is a sample screen. Please enter the MAC Address for your Network Card/Adapter into this field.

EtherFast Cable/DSL Routers

Instant Broadband Series

Password

It is strongly recommended that you set a password for the Router. When you first power up the Router, there is no default Password setting assigned.

If you leave the password field blank, all users on your network will be able to access the Router simply by entering the unit's IP address into their web browser's location window.

If you select the Restore Factory Default option and click Apply, you will clear all of the Router’s settings.

Do not restore the factory defaults unless you are having difficulties with the Router and have exhausted all other troubleshooting measures. Once the Router is reset, you will have to re-enter all of your configuration data.

• Default Gateway Address Your ISP will provide you with the Default

Gateway IP Address. If you select “Obtain an IP address automatically,” your ISP will assign these values.

• DNS (Domain Name Server) IP Address Your ISP will provide you with

at least one DNS Server IP Address. If you select “Obtain an IPaddress automatically,” these values will be assigned by your ISP.

• PPPoE (Point-to-Point Protocol over Ethernet) Some DSL-based ISPs

use PPPoE to establish communications with an end-user. If you are using a DSL line, check with your ISP to see if they use PPPoE. If they do use PPPoE, you must enable it. To enable PPPoE:

1. Click on the Enable option in the PPPoE section of the Setup screen.

2. Enter the User Name you use to log on to your Internet connection.

3. Enter your corresponding Password.

• Connect on Demand If you aren’t actively using the Inter net, you can

configure your Router to cut your connection with your ISP after a certain period of time. If you have been disconnected due to inactivity, Connect on Demand enables your Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, choose the Enable option.

• Max Idle Time Max Idle Time is the number of minutes that passes

before the Router drops your Internet connection, due to inactivity. If you want your Internet connection to remain on at all times, enter zero (0) in this field and click Apply. Otherwise, enter in the number of minutes you want to elapse before your Internet access disconnects.

• Keep Alive Option This option keeps your PPPoE-enabled Internet access

connected indefinitely, even when it sits idle. It keeps the connection alive by sending out a few data packets periodically, so your Internet ser vice thinks that the connection is still active. To use this option, click on the box next to Keep Alive to select it, and click Apply.

You can check whether the values you entered for the above

settings are correct by testing your Internet access.

EtherFast Cable/DSL Routers

Instant Broadband Series

DHCP Server This field shows the status of the Router's DHCP server function, which is either enabled or disabled.

•WAN These fields display the WAN IP Address, WAN Subnet Mask and

WAN Default Gateway IP address of the Router, as seen by external users on the Internet.

DNS (Domain Name System) IP Address These fields show the IP Address(es) of the DNS currently used by the Router. Multiple DNS IP settings are common. In most cases, the first available DNS entry is used.

DHCP

A DHCP (Dynamic Host Configuration Protocol) server automatically assigns IP addresses to each PC on your network for you. Unless you already have one, it is highly recommended that you leave your Router enabled as a DHCP server.

• DHCP Server DHCP is already enabled by factory default. If you

already have a DHCP server on your network, set the Router's DHCP option to Disable and click Apply. If you disable DHCP, remember to assign a static IP address to your Router.

• Starting IP Address Enter a value for the DHCP server to start with

when issuing IP addresses. This value must be (192.168.1.) 2 or greater, because the default IP address for your Router is 192.168.1.1.

Status

This tab displays the current status of the Router; it reflects the data and selections you’ve entered under the Setup tab.

All of the information provided on this screen is read-only. To make changes, select the Setup tab.

• Host Name This field shows the name of your Router. This entry is nec-

essary for some ISPs.

• Firmware V er sion This field shows the installed version and date of the

firmware. Version dates are slightly more accurate than version numbers.

• PPPoE (Point-to-Point Protocol over Ethernet) This field shows

whether you have enabled the use of the Router’s PPPoE support.

• LAN These fields display the current IP Address and Subnet Mask of the

Router, as seen by users on your internal network.

EtherFast Cable/DSL Routers

To upgrade the Router’s firmware:

1. Select the Help tab (shown on the previous page).

2. Click on Upgrade Firmware to display a new window (shown below):

3. Enter your Router’s administration password into the Password Confirm field.

4. Click the Browse button to find the firmware upgrade f ile that you down- loaded from the Linksys Web site.

5. Double-click the Upgrade file. Click on the Upgrade button and follow the instructions there.

Instant Broadband Series

• Number of DHCP Users (Optional) Enter the maximum number of PCs

that you want the DHCP server to assign IP addresses to. This number cannot be greater than 253.

• DHCP Clients Table Click on the Clients Table button to show the cur-

rent DHCP Client data. (This data is stored in temporary memory and changes periodically).

Help

Under the Help tab, you’ll find links to all of the Utility’s internal suppor t documentation, including the application that upgrades the Router’s firmware.

New firmware versions are posted on www.linksys.com, and can be downloaded for free. If your Router can access the Internet already, there’s no need to download a newer firmware version, unless that version has a new feature that you want to use. “Flashing,” or loading new f ir mware onto your Router does not enhance the speed or the quality of your connection speed.

See page 48 for directions on enabling remote firmware upgrades (IP Filtering).

EtherFast Cable/DSL Routers

Instant Broadband Series

Blocking WAN Requests

• By enabling the Block W ANRequest feature, you can prevent your network

from being “pinged,” or detected, by other Internet users. The Block WAN

Request feature also reinforces your network security by hiding your network ports. Both functions of the Block WAN Request feature make it more difficult for outside users to work their way into your network.

• Click the Apply button to save your changes.

Using IPSec Pass Through

• This feature lets you use IPSec Pass Through. To use this feature, click on

Enable next to “IPSec Pass Through,” then click on Apply.

• To disable IPSec Pass Through, click on Disable and then click on Apply.

Using PPTP Pass Through

• Point-to-Point Tunneling Protocol is the method used to enable VPN

(Virtual Private Networking) sessions. To enable this feature, click on

Enable next to PPTP Pass Through, and then click Apply.

• To disable this feature, click on Disable next to PPTP Pass Through, and

then click Apply.

Using Remote Management

• This feature allows you to manage your Router

from a remote location, via the Internet. To enable this feature, click on Enable, then click on Apply.

• To disable Remote Management, click on Disable, then click on Apply.

Using Remote Upgrade

• This feature allows you to “flash,” or upgrade, your Router’s firmware from

a remote location. To enable Remote Upgrade, click on Enable, then click on Apply.

• To disable this feature, click on Disable, then click on Apply.

Remote Management

and Remote Upgrades

must be activated

before you leave to a

remote location.

IP Filtering

IP Filters block specific internal users from accessing the Internet and enable VPN (Virtual Private Network) sessions. You can set up filters by using IP addresses or network port numbers (or a range of ports).

Setting Up Filters

• To set up a filter using IP addresses, enter the range of IP addresses you

wish to filter into the IP address fields. Users who have filtered IP addresses will not be able to access the Internet at all. If you only want to filter one IP address instead of a range of IP addresses, enter the same value into both fields. For instance, if you wish to filter the PC with the IP address of

192.168.1.5, enter 5 into both fields on one line: 192.168.1.5~ 192.168.1.5. Click Apply when you’re done.

• To filter users by network port number, enter a network port number or a

range of network ports. Enter the port numbers you want to filter into the port numbers fields. Users connected to the Router will no longer be able to access any port number listed there.

NNoottee::

Only

one

VPN session may be conducted at a time.

EtherFast Cable/DSL Routers

Instant Broadband Series

Dynamic Routing

With Dynamic Routing, you can automatically adjust to physical changes in the network's layout. The Router, using the RIP protocol, calculates the most efficient route for the network’s data packets to travel between the source and the destination, based upon the shortest paths. The RIP protocol regularly broadcasts routing information to other routers on the network.

To set up dynamic routing:

1. Select the correct working mode. Gateway Mode should be used if your Router is hosting your network's connection to the Internet. Router Mode should be selected if the Router exists on a network with other routers.

2. Select the protocol by which you transmit data on the network.

3. Select the protocol by which the Router receives network data.

4. Click the Apply button to save your changes.

IP Forwarding

Forwarding sets up public services on your network, such as web servers, ftp servers, or email servers.

When users send this type of request to your network via the Internet, the Router will forward those requests to the appropriate PC. Before using Forwarding, the Router's DHCP function must be disabled under the DHCP tab and the Router must be assigned a new static LAN IP address.

If you need to forward all ports for one PC, use DMZ Hosting.

To add a server using Forwarding:

1. Enter the port number or range of ports used by the server. On the same line, enter the LAN IP address of the server that you want the Internet user(s) to access.

2. Configure as many entries as needed- the Router supports up to 10 ranges of ports. Click Apply when you’re done.

EtherFast Cable/DSL Routers

Instant Broadband Series

2. Enter the following data to create a static route:

Destination LAN IP The Destination LAN IP address is the Address of the remote network or host to which you want to assign a static route. Enter the IP address of the host for which you wish to create a static route here. If you are establishing a route to an entire network, be sure that the network portion of the IP address is set to zero (0).

For example, the Router’s standard IP address is 192.168.1.1. Based on this address, the address of the network to which the Router is connected is 192.168.1, with the last digit (1, in this case) determining the Router’s place on the network. Therefore, you would enter the IP address

192.168.1.0 if you wanted to route to the Router’s entire network, rather than to just the Router.

Subnet Mask The Subnet Mask (also called the Network Mask) determines which portion of an IP address is the network portion and which portion is the host portion. In the example above, the Network Mask is

255.255.255.0. This determines (by using the values 255) that the first three numbers of an network IP address identify this particular network, while the last digit (from 1 to 254) would identify the specific host.

Default Gateway This IP address must be the IP address of the gateway device that allows for contact between the Router and the remote network or host.

Hop Count This value gives the number of nodes that a data packet pass- es through before reaching its destination. A node is any device on the network, such as switches, PCs, etc.

Interface Interface tells you whether your network is on the internal LAN or the WAN, or the external Internet. If you’re connecting to a subnetwork, select LAN. If you’re connecting to another network through the Internet, select WAN.

3. Click Apply to save your changes.

Static Routing

If your Cable/DSL Router is connected to more than one network, you may have to set up a static route between the two networks. A static route is a predetermined pathway that network data packets must travel to reach a specific host or network. Click the Show Routing Table button to view the current static routing configuration.

To create a static route entry:

1. Select Static Route Entry from the drop-down list. The Cable/DSL Router supports up to 20 static route entries.

EtherFast Cable/DSL Routers

Logging

The Log feature provides you with a log of all incoming and outgoing URLs or IP addresses for your Internet connection.

Outgoing Access Log lists all the URLS or IP addresses of Internet sites that users on your network have accessed, and Incoming Access Log gives you a log of all incoming Internet traffic.

This data can also be accessed by other network users if the file is shared out.

• To activate logging, click on Enable next to “Access Log.”

• Enter in the IP address of the PC that you want to send the log to. Make

sure that this PC is using a static IP address. Click Apply when you’re done.

• Click on Outgoing Access Log or Incoming Access Log to view each log.

• To disable Logging, click on Disable in the Log window, then click Apply.

Instant Broadband Series

DMZ Hosting

The DMZ Hosting feature allows one local user to be exposed to the Internet to use a special-purpose service such as Internet gaming and video-conferencing.

Whereas IP Forwarding can only forward a maximum of 10 ranges of ports, DMZ hosting forwards all the ports for one PC simultaneously.

• To expose one PC, enter the computer’s IP address and click Apply.

• Deactivate DMZ by entering a zero (0) in the field and clicking Apply.

EtherFast Cable/DSL Routers

Instant Broadband Series

should be the Router’s IP Address, and DNS (in "More".)

• Same as above, check the same setup values in the Status Monitor page of the Cable/DSL Router.

4. When I enter a URL or IP address, I get a “Request timed out” error.

• Check to see if other PCs give you the same error message. If they do, make sure that your workstations’IP settings are correct: IP address, Subnet Mask, Default Gateway and DNS Server data.

• If the PCs are configured cor rectly but still not working, check the Cable/DSL Router. Make sure that it is connected and powered on. Connect to the Router and check its settings. If you cannot connect to it, check the LAN and power connections.

• If the Cable/DSL Router is configured correctly, check your Internet connection. (DSL/cable modem, etc.) to see that it is working correctly.

5. I can’t obtain an IP address from my cable or DSL modem.

• Make sure that all of your cabling is properly connected and that all of

the Router’s WAN and LAN LEDs are lighting up.

• Power down your cable or DSL modem for a few seconds. Turn it back on. After the modem goes through its self-test, check to see if you now have an IP address.

• Make sure that your cable or DSL modem is DHCP-capable.

• You may have to enter the Host or Domain name in the Setup page of the Router’s web-based utility. Go to page 33 for more information.

• Your ISP may require MAC Addresses. Check with your ISP. This address can be obtained in the Status screen of the Router’s Web-based Utility.

6. I can’t access my email or the Internet.

• Some ISPs,especially cable providers, configure their networks so that

you don’t have to enter a full Inter net 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”, instead of “www.linksys.com”, or your e-mail server’s address is something like “e-mail” or “pop3”, instead of “pop.mail.linksys.com,” you won’t be able to properly conf igure your Cable/DSL Router until you determine the actual Internet addresses of your Web and e-mail connections.

• You must obtain this information before connecting the Router to your

network. To do so, you can ask your ISP, or tur n to page 61 to learn how to find this data yourself by “pinging” your Router for an IP address.

Troubleshooting

Common Problems and Solutions

This section provides possible solutions to problems regarding the installation and operation of the Cable/DSL Router. Read below description to solve your problems. If you can’t find an answer here, check the Linksys website at www.linksys.com.

1. I can’t connect to the Cable/DSL Router.

• Check to see that the Cable/DSL Router is properly installed, the LAN connections are OK (Link LEDs should be on), and it is powered ON.

• Make sure that your PC and the Router are on the same network segment. If you are not sure, initiate the DHCP function and let the PC get the IP address automatically.

• Make sure that your PC is using an IP address between 192.168.1.2 to

192.168.1.254 and thus compatible with the Cable/DSL Router default IP address of 192.168.1.1.

• Also, the Subnet Mask must be set to 255.255.255.0 to match the Cable/DSL Router’s Subnet Mask. You can check these settings for the Router by going to Start, Settings, Control Panel, and Network: check the Properties for the TCP/IP protocol.

2. The Diag LED stays lit when it should not be lit.

• The Diag LED lights up when the Router is first powered up. Meantime, the system will boot up itself and check for proper operation. After finishing the checking procedure, the LED turns off to show the system is working fine. If the LED remains lit after this time, the device is not working properly. Try to re-flash the f ir mware by assigning a static IP address to the computer, then upgrade the fir mware again. If that doesn’t help, contact your dealer for further inspection.

3. I can’t browse through the Cable/DSL Router.

• Check if both ends of the network cable and power adapter are properly

connected. Check if the status LEDs on the front panel are functioning properly.

• If using Windows 95 or Windows 98, check the TCP/IP setup on the client side. Run "winipcfg" by clicking on the Start button, then selecting Run. The PC should have an IP address of 192.168.1.xxx ("xxx" is from 2 to 254.) Subnet Mask is 255.255.255.0, the default gateway IP

EtherFast Cable/DSL Routers

Instant Broadband Series

Does the Cable/DSL Router support ICQ send files? Yes, with the following fix:

ICQ menu-> preference -> connections tab-> check "I am behind a firewall or proxy," and set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the Router.

How do I get Napster to work with the Router? Napster is fully compatible

with the Router and requires no special settings.

I set up an Unreal Tournament ser ver, but others on the network cannot join.

What do I do? If you are running a dedicated Unreal Tournament ser ver, you

must create a static IP address for each of the network’s PCs and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. If you want to use the UT Server Admin, forward another port (8080 usually works well), then in the [UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and ServerName to the IP assigned to the Router from your ISP.

Can multiple gamers on the LAN log on to one game server and play simultane-

ously with just one public IP address? It depends on which network game

you’re playing, and/or what kind of game server you are using. For example, Unreal Tournament does suppor t multi-login with just one public IP address.

How do I get

Half-Life:Team Fortress

to Work with the Router? The default

client port for Half-Life is 27005. The PCs on your LAN must have "+clientport 2700x" to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple PCs connect to the same server.

One exception: Version 1.0.1.6 won't let multiple PCs with the same CD key connect at the same time, even if they’re on the same LAN (not a problem with Version 1.0.1.3). For hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP of the server PC. There remains, however, a problem with people being booted after a few minutes with an "illegible server” message.

How can I block corrupted FTP downloads? If you are experiencing corrupted

files when you download a file with your FTP client, try using another FTP program.

My Web pages hang (distorted),I get corrupted downloads, or nothing but junk

characters are being displayed on the screen. What do I do? Force your NIC

Frequently Asked Questions

How many IP addresses can the Cable/DSL Router support? The Router supports a maximum of 253 IP addresses.

Is IPSec Pass-Thru supported by the EtherFast Cable/DSL Router?Yes, it is a built-in feature that the Router automatically enables.

Where is the Cable/DSL Router installed on the network? In a typical environ-

ment, the Router is installed between the Cable/DSL Modem and the LAN. Plug the Cable/DSL Router into the cable or DSL modem's Ethernet port.

Does the Cable/DSL Router support IPX or AppleTalk? No. TCP/IP is the only

protocol standard for the Internet and has become the global standard for communications. IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a communications protocol used on Apple and Macintosh networks, can be used from LAN to LAN connections, but those protocols cannot connect from WAN to LAN.

Does the WANconnection of the Cable/DSL Router support 100Mbps Ether net?

Since broadband Internet connections like cable and DSL do not exceed 10Mbps, the Cable/DSL Router’s cur rent hardware design only supports 10Mbps Ethernet on its WAN port. It does suppor t 100Mbps through the built-in auto-sensing Fast Ethernet 10/100 Switch on the LAN side of the

Router. (for the 3 and 4-Port Routers only)

What is Network Address Translation (NAT) and what is it used for? Network

Address Translation (NAT) translates multiple IP addresses on the private LAN to one public address that is sent out to the Internet. This adds a level of network security since the addresses of PCs connected to the private LAN is never transmitted over the Internet. Furthermore, NAT allows the Cable/DSL Router to be used with low-cost Internet accounts, such as DSL or cable modems, where only one TCP/IP address is provided by the ISP. The user may have 253 private addresses behind this single address provided by the ISP.

Does the Cable/DSL Router support any operating system other than Windows

95,Windows 98, Windows 2000, or Windows NT? Yes, but Linksys does not

provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems at this time.

EtherFast Cable/DSL Routers

Instant Broadband Series

with a static IP address if you want to use DMZ Hosting.

If DMZ Hosting is used, does the exposed user/PC share the public IP address

with the Router? No.

Does the Router pass PPTP packets or actively route PPTP sessions? The

Router allows PPTP packets to pass through.

What is the maximum number of users supported by the Router? The Router

supports up to 253 users.

Is the Router cross-platform compatible? Any platform that supports Ethernet

and TCP/IP is compatible with the Router.

How many ports can be simultaneously forwarded? Theoretically, the Router

can establish 520 sessions at the same time, but you can only forward 10 ranges of ports.

Does the Router replace a modem? Is there a cable or DSL modem in the

Router? No, this version of the Router must work in conjunction with a

cable or DSL modem.

Which modems are compatible with the Router? This Router is compatible

with virtually any cable or DSL modem that supports Ethernet.

What are the advanced features of the Router? The Router's advanced features

include IP Filtering, IP Forwarding, Dynamic Routing, Static Routing, DMZ hosting, and Logging.

What is the maximum number of VPN sessions allowed by the Router?

One VPN session at a time.

How big is the memory buffer on the Router? 512KB. Does Linksys provided syslog support? No, Linksys does not currently provide

syslog support.

How can I check whether I have static or DHCP IP Addresses? Consult your ISP

to obtain this information.

How do I get mIRC to work with the Router? Under the Fowarding tab, set port

forwarding to 113 for the PC on which you are using mIRC.

to 10Mbps or half duplex mode, and turn off the "Autonegotiate" feature on it temporarily. (To do this, go to the Network Control Panel, in your Ethernet Adapter's Advanced Properties tab). Check our web site at www.linksys.com for more information.

If all else fails in the installation, what can I do? Reset the Router by holding

down the Reset button for at least three seconds and reset your cable or DSL modem by powering the unit off and then on. Obtain and flash (upload) the latest firmware release available on the Linksys website, www.linksys.com.

How will I be notified of new Router firmware upgrades? All Linksys f ir mware

upgrades are posted on the Linksys website at www.linksys.com, where they can downloaded for free. The Router's firmware can be upgraded with TFTP programs. If your Router’s Internet connection is working well, there is no need to download a newer firmware version, unless that version contains new features that you would like to use. Downloading a more current version of Router firmware will not enhance the quality or speed of your Internet connection, and may disrupt your current connection stability.

Does the Cable/DSL Router support IPsec? A new IPsec Pass Through features

is now available in firmware versions 1.30 and later, which can be downloaded at www.linksys.com.

Does the Router function in a Macintosh environment? Yes, but the Router's

setup pages are accessible only through Internet Explorer v4.0 or Netscape Navigator v4.0 or higher for Macintosh PCs.

What type of firewall does the Router have? The Cable/DSL Router uses NAT

(Network Address Translation) and TCP/IP port inspections.

Does the Router do stateful packet inspection? No. I cannot get the web configuration screen for the Router. What can I do? You

may have forgotten to remove the proxy server settings on your Internet browser, e.g., Netscape Navigator or Inter net Explorer. Or, remove the dialup settings on your browser. Check your browser documentation.

What is DMZ Hosting? Demilitarized Zone (DMZ) allows one IP address (or

computer) to be exposed to the Internet. Some applications require multiple TCP/IP ports to be open. It is recommended that you set your computer

EtherFast Cable/DSL Routers

Instant Broadband Series

Step One: To Ping an IP Address

The first step to determining your ISP’s web and e-mail ser ver address is to ping its IP Address.

1. Power on the PC and the cable or DSL modem, and restore the net-

work configuration set by your ISP if you have since changed it.

2. Click Start, then Run, and type "command" to bring up the DOS win-

dow.

3. At the DOS command prompt, type "ping mail" (assuming that the

location for which you’re tr ying to find an IP address is conf igured as “mail”). Press Enter. Information such as the following data, taken from a ping of Microsoft Network’s email server, will be displayed.

C:\>ping mail

Pinging mail [24.53.32.4] with 32 bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0%

loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

4. Write down the IP address returned by the ping command. (In the

example above:24.53.32.4.) This IP address is the actual IP address of the server “mail”, or any other word or value you have pinged.

Appendix

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

Almost all Internet addresses are configured with words and characters, i.e., www.linksys.com, www.yahoo.com, etc. However, these Internet addresses are actually assigned to IP addresses, numerical values which are the true addresses on the Internet.

For example, www.linksys.com is actually 206.135.116.3. Type it into your web browser and you will bring up the Linksys home page every time.

However, IP and web addresses are sometimes long and hard to remember. Because of this, certain ISPs will shorten their server addresses to single words or codes on their customers’web browser or e-mail configurations.

If your ISP’s e-mail and Web server addresses are configured with single words (“www”, “e-mail”, “home”, “pop3”, etc.) instead of complete Internet addresses or IP addresses, your Router may have problems sending or receiving email and accessing the Internet. This happens because your Router has not been configured by your ISP to accept their abbreviated server addresses.

The solution is to find the true web addresses behind your ISP’s code words. You can f ind these IP and web addresses of your ISP’s servers by “pinging” them.

If you do not have your ISP’s web and e-mail IP addresses, you must either get them from your ISP or follow these steps prior to connecting your Cable/DSL Router to your network.

EtherFast Cable/DSL Routers

Instant Broadband Series

Installing the TCP/IP Protocol

Follow these instructions to install the TCP/IP protocol on one of your PCs only after a network card has been successfully installed inside the PC. These instructions are for Windows 95 and Windows 98. For TCP/IP setup under Windows NT, see your Windows NT manual.

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

2. Double-click on the Network icon to bring up your Network window. Select the Configuration tab.

3. Click the Add button.

4. Double-click on Protocol.

5. Highlight Microsoft under the list of manufacturers.

Step Two: Pinging for a Web Address

While the IP address returned above would work as your e-mail server address, it may not be permanent. IP addresses change all the time. Web addresses, however, usually don’t. Because of this, you’re likely to have less problems by configuring your system with web addresses rather than IP addresses. Follow the instructions below to find the web address assigned to the IP address you just pinged.

1. At the DOS command prompt, type “ping -a 24.53.32.4”, where

24.53.32.4 is the IP address you just pinged. Information such as the following data will be displayed.

C:\>ping -a 24.53.32.4

Pinging mail.msnv3.occa.home.com [24.53.32.4] with

32 bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0%

loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

2. Write down the web address returned by the ping command. (In the

example above:mail.msnv3.occa.home.com.) This web address is the web address assigned to the IP address you just pinged. While the IP address of “mail” could change, it is likely that this web address will not.

3. Replace your ISP’s abbreviated server address with this extended web

address in the corresponding Internet application (web browser, e-mail application, etc.).

Once you have replaced the brief server address with the true server address, your Router should have no problem accessing the Internet through that Internet application.

EtherFast Cable/DSL Routers

Instant Broadband Series

Twisted-Pair Cabling

There are different grades, or “categories,” of twisted-pair cabling. Category 5 is the most reliable and most highly recommended. Category 3 is a good second choice. Straight-through cables are used for connecting computers to a hub. Crossover cables are used for connecting a hub to another hub (there is an exception: some hubs have a built-in uplink port that is crossed internally, which allows you to link or connect hubs together with a straight-through cable instead).

You can buy pre-made Category 5 cables, or cut and crimp your own. Category 5 cables can be purchased or crimped as either straight-through or crossover. Inside a Category 5 cable are 8 thin, color-coded wires inside that run from one end of the cable to the other. All 8 wires are used. In a straight-through cable, wires 1, 2, 3, and 6 at one end of the cable are also wires 1, 2, 3, and 6 at the other end. In a crossover cable, the order of the wires change from one end to the other: wire 1 becomes 3, and 2 becomes 6. See the diagrams on the

next page for more detailed information on straight-through and

crossover cabling.

To determine which wire is wire number 1, hold the cable so that the end of the plastic RJ-45 tip (the part that goes into a wall jack first) is facing away from you. Face the clip down so that the copper side faces up (the springy clip will now be parallel to the floor). When looking down on the copper side, wire 1 will be on the far left.

6. Find and double-click TCP/IP in the list to the right (below).

7. After a few seconds, the main Network window will appear. The TCP/IP Protocol should now be listed.

8. Click OK. Windows may ask for original Windows installation files. Supply them as needed, e.g., D:\win98, D:\win95, c:\windows\options\cabs.

9. Windows will ask you to restart the PC. Click Ye s.

The TCP/IP Installation is now complete.

EtherFast Cable/DSL Routers

Instant Broadband Series

4-Port Router Specifications

Model Number BEFSR41 Standards IEEE 802.3 (10BaseT), IEEE 802.3u (100BaseTX) Protocol CSMA/CD Ports (LAN) Four 10/100 RJ-45 switched ports

(WAN) One 10Base-T Ether net RJ-45 port

for the cable or DSL modem Speed (LAN) 10/100Mbps, (WAN) 10Mbps, Cabling Type (10BaseT) UTP Category 3 or better

(100BaseTX) UTP Category 5 or better Topology Star LED Indicators Power,

(LAN) Link/Act, Full/Coll, 100

(WAN) Link, Act, Diag

Environmental Specifications

Dimensions 186mm x 154mm x 48mm (7.31” x 6.16” x 1.88”) Unit Weight 13.4 oz. (0.42 Kg) Power Input External, 9V AC, 1 Amp Certifications FCC Class B, CE Mark Commercial Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 70°C (-4°F to 158°F) Operating Humidity 10% to 85%, Non-condensing Storage Humidity 5% to 90%, Non-condensing

• Straight-Through Cabling

• Cross-Over Cabling

Crimping Your Own Network Cables

EtherFast Cable/DSL Routers

Instant Broadband Series

3-Port Router Specifications

Model Number BEFSRU31 Standards IEEE 802.3 (10BaseT), IEEE 802.3u

(100BaseTX) Protocol CSMA/CD Ports (LAN) Three 10/100 RJ-45 Switched ports

(WAN) One 10Base-T Ether net RJ-45 port

for the cable or DSL modem

Speed (LAN)10/100Mbps

(WAN) 10Mbps Cabling Type (10BaseT) UTP Category 3 or better

(100BaseTX) UTP Category 5 or better Topology Star LED Indicators Power

(LAN) Link/Act, Full/Coll, 100

(WAN) Link, Act, Diag

(USB) USB

Environmental Specifications

1-Port Router Specifications

Model Number BEFSR11 Standards IEEE 802.3 (10BaseT), IEEE 802.3u (100BaseTX) Protocol CSMA/CD Ports (LAN) One 10BaseT/100BaseTX RJ-45 port

(WAN) One10BaseT Broadband Uplink por t

Speed (WAN) 10Mbps (10BaseT Ether net)

(LAN) 10Mbps (10BaseT Ethernet) or

100Mbps (100BaseTX Fast Ethernet)

Cabling Type (10BaseT) UTP Category 3 or better

(100BaseTX) UTP Category 5 or better Topology Star LED Indicators Power,

(LAN) Link/Act, Full/Coll, 100

(WAN) Link, Act, Diag

Environmental Specifications

Dimensions 186mm x 154mm x 48mm (7.31” x 6.16” x 1.88”) Unit Weight 12.6 oz. (0.35kg) Power Input External, 7.5V DC, 7Amps Certifications FCC Class B, CE Mark Commercial Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 70°C (-4°F to 158°F) Operating Humidity 10% to 85%, Non-condensing Storage Humidity 5% to 90%, Non-condensing

EtherFast Cable/DSL Routers

Instant Broadband Series

www.linksys.com

Customer Support

For help with the installation or operation of your Instant Broadband EtherFast Cable/DSLRouter, contact Linksys Customer Support at one of the phone numbers or Internet addresses below.

Information 800-546-5797 (1-800-LINKSYS) Customer Support 800-326-7114

949-261-1288

Fax 949-261-8868 Email support@linksys.com Web site http://www.linksys.com FTP site fttp://ftp.linksys.com

Linksys BEFSR11, BEFSR41 v2, BEFSRU31, EtherFast NULL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual