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Linksys BEFSR81 Router Manual PDF (Setup & Configuration Guide)

Given below is full router user manual of Linksys BEFSR81 router model. You can also download this manual in PDF Format to read later on your computer.

Product user manuals come handy in case you want to know all functionalities of your device, troubleshooting, fist time configuration & setup and in many other situations.

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Instant Broadband™
Series
EtherFast Cable/DSL
Router
Model No.:
BEFSR81
User Guide
Page 2 / 25
COPYRIGHT & TRADEMARKS
Copyright © 2000 Linksys, All Rights Reserved.
Instant Broadband is a registered
trademark of Linksys.
Microsoft, Windows, and the Windows logo are registered trade-
marks of Microsoft Corporation.
All other trademarks and brand names are the proper-
ty of their respective proprietors.
LIMITED WARRANTY
Linksys guarantees that every Instant Broadband EtherFast Cable/DSL Router is free
from physical defects in material and workmanship under normal use for one year from
the date of purchase. If the product proves defective during this warranty period, call
Linksys Customer Support in order to obtain a Return Authorization Number. BE SURE
TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCT'S
PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE
PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product, mark the
Return Authorization Number clearly on the outside of the package and include your
original proof of purchase.
IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PROD-
UCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM-
AGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFT-
WARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY
PRODUCT. Linksys makes no warranty or representation, expressed, implied, or statu-
tory, with respect to its products or the contents or use of this documentation and all
accompanying software, and specifically disclaims its quality, performance, mer-
chantability, or fitness for any particular purpose. Linksys reserves the right to revise or
update its products, software, or documentation without obligation to notify any individ-
ual or entity. Please direct all inquiries to:
Linksys
P.O. Box 18558, Irvine, CA 92623.
FCC STATEMENT
This Instant Broadband EtherFast Cable/DSL Router has been tested and complies
with the specifications for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radi-
ate radio frequency energy and, if not installed and used according to the instructions,
may cause harmful interference to radio communications. However, there is no guaran-
tee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which is found by turning
the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment or device
• Connect the equipment to an outlet other than the receiver’s
• Consult a dealer or an experienced radio/TV technician for assistance
006
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Instant Broadband Series
EtherFast Cable/DSL Router
Introduction
The Linksys EtherFast Cable/DSL Router
Congratulations on your purchase of a Linksys Instant Broadband EtherFast
Cable/DSL Router. The EtherFast Cable/DSL Router is the perfect option to
connect a small group of PCs to a high-speed Broadband Internet connection
or to an Ethernet backbone. Configurable as a DHCP server, the EtherFast
Cable/DSL Router can act as the only externally recognized Internet gateway on
your local area network (LAN) and, with QoS, you can prioritize performance for
FTP, HTTP, and other services. The Router serves as an Internet firewall, shielding
your network from unwanted access and monitoring and filtering all incoming
data packets. The Router can also be configured to filter internal users' access to
the Internet.
Not only will all of your PCs now be able to enjoy your lightning-fast
Broadband Internet connection, they will also be able to share internal net-
work data. Add it all together and your small network will hum along faster
than you ever thought possible.
Features
• Connects to a Broadband modem or to an Ethernet backbone.
• Equipped with an 8-port 10/100 Switch. Manually select port eight as the
uplink port.
• Connects all of your PCs to the Internet with only one purchased IP address.
• Creates a firewall to protect your PCs from outside intruders.
• Configurable through any networked PC's web browser using Netscape or
Internet Explorer, versions 4.0 or higher.
• The switch dramatically speeds up your gaming and multimedia connec-
tions.
• QoS (Quality of Service) allows you to prioritize performance.
• Can simultaneously act as both a DHCP Server on the LAN and a DHCP
Client on the WAN.
• Compatible with virtually all standard Internet applications.
• Administrators can block specific interior users' Internet access.
• DMZ Host option provides two-way communication between one PC and
your Internet services.
Table of Contents
Introduction
1
Features
1
Package Contents
2
System Requirements
2
Getting to Know the
8-Port EtherFast Cable/DSL Router
3
The 8-Port Router’s Rear Panel
3
The Reset Button
4
The 8-Port Router’s Front Panel LEDs
4
Connecting The Cable/DSL Router to
Your Network
6
Overview
6
About Static & Dynamic IP Addresses
6
Connecting Everything Together & Booting Up
7
Configuring Your Network with
the Cable/DSL Router
9
Configuring The Cable/DSL Router
9
Configuring Your PCs to Connect to the Cable/DSL Router
12
The Cable/DSL Router’s Web-based Utility
15
Quick and Easy Administration
15
Troubleshooting
29
Appendix
35
How to Ping Your ISP’s E-mail & Web Addresses
35
Installing the TCP/IP Protocol
38
Twisted-Pair Cabling
40
Crimping Your Own Network Cables
41
8-Port Router Specifications
42
Customer Support
43
1
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EtherFast Cable/DSL Router
3
Getting to Know the 8-Port
EtherFast Cable/DSL Router
The 8-Port Router’s Rear Panel
The rear panel of the Router is where all of the Router’s connections are
made.
The 8-Port Router’s Ports
WAN
The WAN (Wide Area Network) Port is where you
will connect your cable or DSL modem.
Ports 1-8
These eight LAN (Local Area Network) ports are
where you will connect networked devices, such as
PCs, print servers, remote hard drives, and any-
thing else you want to put on your network.
Uplink Toggle
The Uplink Toggle allows you to manually select
Port Eight as an Uplink Port so that you can
expand your network by connecting to another
switch or hub. Uplinking to another Router, switch
or hub is done by simply selecting the crossed set-
ting and running a cable from Port Eight to the
device.
Power
The Power Port is where you will connect the
included AC Power adapter.
Instant Broadband Series
Package Contents
• One Linksys Instant Broadband Cable/DSL Router
• One power adapter
• One power cord
• One user guide and registration card
System Requirements
• One RJ-45 Broadband Internet connection
• One PC with an installed 10Mbps, 100Mbps, or 10/100 Mbps Ethernet card
• TCP/IP network protocol for each PC
• UTP network cable with RJ-45 connector
• Microsoft Internet Explorer 4.0 or later, or Netscape Navigator 4.0 or later.
(5.0 and 4.7, respectively, are strongly recommended.)
2
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EtherFast Cable/DSL Router
Full/Col
Green
. The Full/Col LED also serves two purposes. If this
LED is continuously illuminated, the connection made
through the corresponding port is successfully running in
Full Duplex mode. If the LED is flickering, the connection
is experiencing collisions. Infrequent collisions are normal.
If this LED is flickering too often, there may be a problem
with your connection. Check the Troubleshooting section on
page 29 if you think there is a problem.
100
Orange
. The 100 LED illuminates when a successful
100Mbps connection is made through the corresponding
port.
The WAN Indicators
Link
Green
. The Link LED illuminates when a successful con-
nection is made between the Router and your Broadband
device or network.
Act
Green
. The Act LED flickers when the Router is sending or
receiving data over the broadband port.
Diag
Red
. The Diag LED illuminates when the Router goes
through its self-diagnosis mode during boot-up. It will turn
off upon successful completion of the diagnosis. If this
LED stays on for an abnormally long period of time, refer
to Troubleshooting on page 29.
5
Instant Broadband Series
The Reset Button
Briefly pressing the Reset Button will refresh the Router’s con-
nections, potentially clearing any jammed links.
Pressing the Reset Button and holding it in for a few seconds will
clear all of the Router’s data. This should be done only if you are experienc-
ing heavy routing problems, and only after you have exhausted all of the
other troubleshooting options. By resetting the Router, you run the risk of
creating conflicts between your PCs’ actual IP Addresses and what the Router
thinks their IP Addresses should be. You may be forced to reboot the entire
system(s).
If the Router locks up, simply power it down for 3 to 5 seconds by removing
the power cable from the Router’s Power Port. Leaving the power off for too
long could result in the loss of network connections.
The 8-Port Router’s Front Panel LEDs
The LAN Indicators
Power
Green
. The Power LED illuminates when the Router is pow-
ered on.
Link/Act
Green
. The Link/Act LED serves two purposes. If the LED
is continuously illuminated, the Router is successfully con-
nected to a device through the corresponding port (1-8). If
the LED is flickering, the Router is actively sending or
receiving data over that port.
4

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