Linksys EF4116 User Manual
COPYRIGHT & TRADEMARKS
Copyright © 2003 Linksys, All rights reserved. Instant EtherFast and Linksys are registered trademarks 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 EtherFast
®
EtherFast®16-Port and 24-Port 10/100
Ethernet Switch is free from physical defects in material and workmanship for two years,
when used within the limits set forth in the Specifications 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. 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. 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 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
This equipment has been tested and found to comply with the limits for a Class A 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
UG-EF3116_24 & 4116_24-010303A KL
EtherFast®16-Port and 24-Port 10/100 Ethernet Switches
1
Table of Contents
CChhaapptteerr 11:: IInnttrroodduuccttiioonn 11
The Linksys Instant EtherFast
®
EtherFast®10/100 Ethernet Switches 1
Features 1
Package Contents 2
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Planning Your Network 3
Installing an Ethernet Switch 4
Reading an Ethernet Switch’s LED Display 6
Tips on Switching Your Network 7
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((mmooddeellss EEFF33111166 && EEFF33112244 OONNLLYY)) 88
Introduction 8
Installing a Fiber Optic Expansion Module 8
Reading a Fiber Module’s LED display 10
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The History of Fast Ethernet 11
Switches Versus Hubs 11
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EF3116/EF3124 18
EF4116/EF4124 18
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EF3116/EF3124 19
EF4116/EF4124 19
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Chapter 1: Introduction
With advanced switching technology, the EtherFast® 10/100 Ethernet Switches
will boost your network performance with much more than just full duplex data
transfer and dedicated bandwidth. They feature non-blocking, wire-speed
switching that forwards packets as fast as your network can deliver them. Also
included are Address Learning and Aging to prevent data transfer errors and
Data Flow Control to help prevent packet collisions.
The rack mountable switches include an Expansion Port that accepts an optional Fiber Module to let you grow your network by linking to other switches in
full duplex mode up to 2000 meters (6560 feet) away. The compact switches
are small enough to fit into any crowded office.
No matter how intensive your network demands, the EtherFast® 10/100
Ethernet Switches advanced chipsets support your needs with an affordable and
efficient networking solution you can count on.
• 16 or 24 autosensing 10/100 full duplex, auto MDI/MDI-X ports
• Some models feature optional 100BaseFX Fiber Optic Modules to connect
multiple switches at high speed as your network grows
• Run blazing speeds up to 200Mbps
• Address Learning and Aging and Data Flow Control for enhanced transmission reliability
• Perfect for Running 10BaseT, 100BaseTX and 100BaseFX Hardware
Together Seamlessly
• Data Flow Control Filters Out Faulty Data Packets
• Auto MDI/MDI-X
• Supports aging function, 802.3x Pause Frame for full duplex
• Head of Line (HOL) blocking prevention
• Broadcast storm control avoids unnecessary bandwidth absorption
The Linksys Instant EtherFast
®
EtherFast®10/100 Ethernet Switches
Features
3
EtherFast®16-Port and 24-Port 10/100 Ethernet Switches
Chapter 2: Hardware Installation
Building a Fast Ethernet network involves a few more topology rules in addition to 10BaseT network rules. These rules specify distance limitations and
cabling specifications. Data loss, collisions, and other network problems causing down time are likely to result if the rules below are not followed.
• Use UTP Category 5 (EIA 568B, Cat 5) ethernet cabling with four twisted-
pair wires and RJ-45 tips for all Fast Ethernet connections.
• Use the chart below to position any switches, hubs and workstations.
*Hub refers to any type of 100Mbps hub, including regular hubs and stackable
hubs. A 10Mbps hub linked to another 10Mbps hub or a 10/100 hub can span
up to 100 meters (328 feet).
• No more than two hubs should be uplinked in a row in a Fast Ethernet net-
work. A set of stacked hubs, which must be stacked with a stacking cable,
counts as one hub or node on the network.
• In Fast Ethernet, an Ethernet Switch acts as a repeater, regenerating data sig-
nals before passing them on to the next device. Hubs cannot act as repeaters.
From
Switch
Hub*
Switch or Hub*
To
Switch or Hub*
Hub*
Workstation
Maximum Distance
100 meters (328 feet)
5 meters (16.4 feet)
100 meters (328 feet)
Instant EtherFast®Series
2
• EtherFast®16-Port or 24-Port 10/100 Ethernet Switch (Only ONE Switch
included)
• AC Power Cable
• User Guide and Registration Card
• Mounting kit containing: Four rubber feet for mounting an Ethernet Switch
on a table Two mounting brackets Six screws for attaching the brackets to a
rack (not shown)
Package Contents
Figure 1-1
Planning Your Network
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