Linksys EF2H16, EF2H24 User Manual
Instant EtherFast®II Series
EtherFast II
10/100 Hubs
Use this guide to install these
Linksys Products:
User Guide
EtherFast II 10/100
16-Port RackMountable Hub
(EF2H16)
EtherFast II 10/100
24-Port RackMountable Hub
(EF2H24)
COPYRIGHT & TRADEMARKS
Copyright © 2000 Linksys, All Rights Reserved. EtherFast II 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 EtherFast II 10/100 Hub is free from physical defects in
material and workmanship under normal use for five (5) years 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 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. TAMPERING WITH OR DISASSEMBLING THE PRODUCT VOIDS THE LINKSYS
WARRANTY. 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 EtherFast II 10/100 Hub 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
005
Instant EtherFast II Series 10/100 Hubs
Introduction
EASY TO SET UP--EASY TO MAINTAIN
The EtherFast II 10/100 Hubs from Linksys are the second generation in the
Instant EtherFast Series that quickly set the standard for economical network
expansion. Since they are ready to run right out of the box and feature easy
rack-mount installation, your network will be up and running in no time.
Extensive use of advanced VLSI technology ensures that each EtherFast II
10/100 Hub will function with unsurpassed reliability, allowing your business
to operate with a minimum of down-time.
MEETING THE NEEDS OF EXPANDING NETWORKS
In today’s fast-paced business world, growth can easily out-pace resources-that’s why the EtherFast II Series is such a g reat solution. The built-in uplink
port and f iber optic expansion slot mean that your network is ready to expand
along with your business needs, and with up to 24 auto-sensing ports, you hav e
the freedom to combine low-cost 10Mbps computers with high-speed 100Mbps
workstations, saving you thousands of dollars. It’s this combination of flexibility, reliability, and performance that make the EtherFast II Series “The
Affordable High-Performance Network Solution.”
Table of Contents
Introduction 1
Planning Your Network 3
About Fast Ethernet 4
Getting to Know the EtherFast II 10/100 Hub 5
LED Indicators 5
Optional Fiber Expansion Module 6
Mounting the Hub 6
Connecting Nodes to the Hub 6
Uplinking the Hub 7
Powering On the Hub 7
Resetting the Hub 7
Appendix 8
Twisted-Pair Cabling 8
Crimping Your Own Cables 9
How to Install an Add-On Module 10
Fiber Optic Modules 11
Specifications 14
Customer Support 15
1
Instant EtherFast II 10/100 Hub
10/100 Hubs
Planning Your Network
The rules that govern how nodes and hubs are distributed across a network
are important to ensure the integrity of your data. Cabling specifications, distance limits, and other topology rules must be followed in order to avoid collisions, data loss, and downed network connections.
The 10/100 Hub is equipped with RJ-45 ports that can automatically adjust to
either 10Mbps or 100Mbps speeds. Each port can operate at either speed,
completely independent of the other ports’ speeds, and can be connected to a
workstation, file server, print server, hub, or another node with twisted-pair
cabling.
Although there are different grades of cabling, you must use EIA 568
Category 5 unshielded twisted-pair (UTP), or better, for each connection you
make, and each cable should not exceed 100 meters, (328 feet), in length.
Category 5 cabling can be obtained at most computer stores, or you can
crimp your own. See page 8 for cabling specif ications. Here are some important cabling rules to follow:
· Computers should never be connected directly together on a network.
They should always be connected to a hub.
· Only two 100Mbps Fast Ethernet hubs can be cascaded, (or uplinked),
together. To cascade more than 2 100Mbps hubs, a switch or a repeater
must be used.
· The maximum length for a Category 5 cable between a 100BaseTX or
10BaseT workstation and a hub is 100 meters (328 feet).
· The maximum distance between 2 100BaseTX hubs without a switch is
5 meters (16.4 feet).
· The maximum distance between 2 10BaseT hubs, (or a 10BaseT hub and an
Auto-Sensing hub), is 100 meters (328 feet).
3
Instant EtherFast II Series
Package Contents for the EtherFast II
10/100 Hub (16 and 24-Port Model)
• EtherFast II 10/100 Hub
• Rack Mounting Hardware
• AC Power Cord
• User Guide
2
Overview
Loading...