Use this guide to install the following products:
5-Port 10/100 Switch SD205
8-Port 10/100 Switch SD208
16-Port 10/100 Switch SD216
User Guide
10/100 Switches
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. Copyright © 2003 Cisco Systems, Inc. All
rights reserved. Linksys is a registered trademark of Cisco Systems, Inc. Other brands and
product names are trademarks or registered trademarks of their respective holders.
LIMITED WARRANTY
Linksys warrants to the original end user purchaser (“You”) that, for a period of the product’s
lifetime, (the “Warranty Period”) Your Linksys product will be free of defects in materials and
workmanship under normal use. Your exclusive remedy and Linksys’s entire liability under this
warranty will be for Linksys at its option to repair or replace the product or refund Your purchase price less any rebates.
If the product proves defective during the Warranty Period call Linksys Technical Support in
order to obtain a Return Authorization Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. When returning a product, mark the Return Authorization
Number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE.
You are responsible for shipping defective products to Linksys. Linksys pays for UPS Ground
shipping from Linksys back to You only. Customers located outside of the United States of
America and Canada are responsible for all shipping and handling charges.
ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD.
ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some
jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives You specific legal rights, and You may also
have other rights which vary by jurisdiction.
TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR
ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL,
INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE
THE PRODUCT, EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. IN NO EVENT WILL LINKSYS' LIABILITY EXCEED THE AMOUNT PAID BY YOU
FOR THE PRODUCT.
The foregoing limitations will apply even if any warranty or remedy provided under this Section
fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.
Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.
FCC STATEMENT
Every 10/100 Switch has been tested and complies 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 devices
• Connect the equipment to an outlet other than the receiver’s
• Consult a dealer or an experienced radio/TV technician for assistance
SD205_SD208_SD216-UG-30602NC JL
Chapter 1: Introduction
r
This newly redesigned Linksys 5-, 8-, or 16-Port 10/100 Switch can significantly increase your network traffic’s speed. A switch serves the same function
as a hub in a network design—tying your network equipment together. But
unlike a simple-minded hub which divides the network’s bandwidth among all
the attached devices, a switch delivers full network speeds at each port.
Installing this cost-effective 5-, 8-, or 16-Port 10/100 Switch can potentially
increase your network speed by f ive, eight, or sixteen times!
It's the perfect way of integrating 10Mbps Ethernet and 100Mbps Fast Ethernet
devices, too. All ports are auto speed negotiating, and have automatic
MDI/MDI-X crossover detection, so you don’t have to worry about the cable
type. Each port independently negotiates for best speed and half- or full-duplex
mode, for up to 200Mbps of bandwidth per port. Fast store-and-forward switching prevents damaged packets from being passed on into the network.
The new, ultra-compact case design is sure to fit into your workgroup environment. Let the Linksys 5, 8-, or 16-Port 10/100 Switch kick your 10/100
network into high gear.
• Ideal for Integrating Your 10BaseT and 100BaseTX Network Hardware
• 5, 8, or 16 10/100 Ports Provide Dedicated Bandwidth in Half- or FullDuplex Modes
• Each Port Supports Auto MDI/MDI-X Cable Detection
• Compatible with All Major Network Operating Systems
• Advanced Store-and-Forward Packet Switching Optimizes Data Transfers
• Auto Partitioning Protects PCs from Downed Network Lines
• Signal Regeneration Ensures Data Transfer Integrity
• Free Technical Support—24 Hours a Day, 7 Days a Week, Toll-Free US
Calls
• Limited Lifetime Warranty
Table of Contents
Chapter 1: Introduction 1
The 10/100 Switch 1
Features 1
Chapter 2: Getting to Know the 10/100 Switch 2
Overview 2
Front Panel LEDs 2
Back and Side Panel Features 2
Chapter 3: Connecting the 10/100 Switch 4
Overview 4
Connecting Network Devices 5
Placement Options 6
Appendix A: Glossary 7
Appendix B: Specifications 9
Environmental 10
Appendix C: Warranty Information 11
Appendix D: Contact Information 12
1
Features
The 10/100 Switch
The power port is located on the side panel of the Switch (see Figure 2-3).
(power) The power port is where you will connect the included power
adapter.
The security slot is located on the other side panel (see Figure 2-4).
(security slot) The security slot is where you can attach a lock so the Switch
will be protected from theft.
32
Chapter 2: Getting to Know the 10/100 Switch
Planning Your Network Layout
The 5-, 8-, and 16-Port 10/100 Switches differ in number of LEDs and ports.
Pictured here is the 5-Port 10/100 Switch; however, the other Switches are similar in form.
System Green. The System LED will light up when the Switch is
powered on.
1-5, 1-8, or 1-16 Green. Each LED will light up when there is a connection
made through its corresponding port. It will flash when there
is activity on its corresponding port.
The network ports are located on the back panel of the Switch.
1-5, 1-8, or 1-16 These ports are connection points for PCs and other network
devices, such as additional switches.
Overview
Figure 2-1
Front Panel LEDs
Back and Side Panel Features
Figure 2-2
Figure 2-3
Figure 2-4
5
Follow these instructions for the 5-, 8-, and 16-Port 10/100 Switches (the 5-Port
10/100 Switch is shown in Figures 3-2 and 3-3).
1. Make sure all the devices you will connect to the Switch are powered off.
2. Connect a Category 5 Ethernet
network cable to one of the
numbered ports on the Switch.
3. Connect the other end to a PC
or other network device.
4. Repeat steps 2 and 3 to connect additional devices.
5. Connect the supplied power
adapter to the power port on the
Switch’s side panel.
6. Plug the other end of the adapter into a power outlet.
7. Power on the devices connected to the Switch. Each active port’s corresponding LED will light up on the Switch.
Proceed to the following section, “Placement Options.”
Figure 3-3
Chapter 3: Connecting the 10/100 Switch
Planning Your Network Layout
This chapter will explain how to connect network devices to the Switch. For an
example of a typical network configuration, see the application diagram shown
in Figure 3-1.
When you connect your network devices, make sure you don’t exceed the maximum cabling distances, which are listed in the following table:
Maximum Cabling Distances
*A hub refers to any type of 100Mbps hub, including regular hubs and stackable hubs. A 10Mbps hub
connected to another 10Mbps hub can span up to 100 meters (328 feet).
4
From
Switch
Hub
Switch or Hub
Switch or Hub*
Hub
Computer
Maximum Distance
100 meters (328 feet) 1
5 meters (16.4 feet) 1
100 meters (328 feet) 1
To
Overview
Connecting Network Devices
Figure 3-1
Note: Make sure you use the
power adapter included with
the Switch. Using a different
power adapter may result in
damage to the Switch.
Figure 3-2
7
Appendix A: Glossary
10BaseT - An Ethernet standard that uses twisted wire pairs.
100BaseTX - IEEE physical layer specification for 100 Mbps over two pairs of
Category 5 UTP or STP wire.
Auto MDI/MDI-X - On a network hub or switch, an auto MDI/MDI-X port
automatically senses if it needs to act as a MDI or MDI-X port. The autoMDI/MDI-X capability eliminates the need for crossover cables.
Auto-negotiate - To automatically determine the correct settings. The term is
often used with communications and networking. For example, Ethernet
10/100 cards, hubs and switches can determine the highest speed of the node
they are connected to and adjust their transmission rate accordingly.
CAT 5 - ANSI/EIA (American National Standards Institute/Electronic
Industries Association) Standard 568 is one of several standards that specify
“categories” (the singular is commonly referred to as “CAT”) of twisted pair
cabling systems (wires, junctions, and connectors) in terms of the data rates
that they can sustain. CAT 5 cable has a maximum throughput of 100 Mbps and
is usually utilized for 100BaseTX networks.
CAT 5e - The additional cabling performance parameters of return loss and farend crosstalk (FEXT) specified for 1000BASE-T and not specified for
10BASE-T and 100BASE-TX are related to differences in the signaling implementation. 10BASE-T and 100BASE-TX signaling is unidirectional-signals
are transmitted in one direction on a single wire pair. In contrast, Gigabit
Ethernet is bi-directional-signals are transmitted simultaneously in both directions on the same wire pair; that is, both the transmit and receive pair occupy
the same wire pair.
Ethernet - IEEE standard network protocol that specifies how data is placed
on and retrieved from a common transmission medium. Has a transfer rate of
10 Mbps. Forms the underlying transport vehicle used by several upper-level
protocols, including TCP/IP and XNS.
Fast Ethernet - A 100 Mbps technology based on the 10Base-T Ethernet
CSMA/CD network access method.
6
Set the Switch on its four rubber feet. For the 8- or 16-Port 10/100 Switch, you
can choose to hang it on a wall using its wall-mount slots. To use this option,
follow these instructions:
1. The wall-mount slots are two
crisscross slots on the Switch’s
bottom panel, as shown in
Figure 3-4. Attach two screws
to the wall, so that the Switch’s
wall-mount slots line up with
the two screws.
2. Maneuver the Switch so the
screws are inserted into the
two slots.
Congratulations!
The installation of the 10/100
Switch is complete.
Placement Options
Figure 3-4
9
Appendix B: Specifications
Model Number SD205 5-Port 10/100 Switch
SD208 8-Port 10/100 Switch
SD216 16-Port 10/100 Switch
Standards IEEE 802.3, IEEE 802.3u
Ports
SD205 5 RJ-45 10/100
SD208 8 RJ-45 10/100
SD216 16 RJ-45 10/100
Cabling Type Category 5 Ethernet
LEDs
SD205 System, Port Status 1, 2, 3, 4, and 5
SD208 System, Port Status 1, 2, 3, 4, 5, 6, 7, and 8
SD216 System, Port Status 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, and 16
8
Hub - The device that serves as the central location for attaching wires from
workstations. Can be passive, where there is no amplification of the signals; or
active, where the hubs are used like repeaters to provide an extension of the
cable that connects to a workstation.
Mbps (Megabits per second) - One million bits per second; unit of measure-
ment for data transmission.
MDI (Medium Dependent Interface) - On a network hub or switch, a MDI
port, also known as an uplink port, connects to another hub or switch using a
straight-through cable. To connect a MDI port to a computer, use a crossover
cable.
MDI-X (Medium Dependent Interface Crossed) - On a network hub or switch,
a MDI-X port connects to a computer using a straight-through cable. To connect a MDI-X port to another hub or switch, use a crossover cable.
Network - A system that transmits any combination of voice, video and/or data
between users.
Switch - 1. A data switch connects computing devices to host computers,
allowing a large number of devices to share a limited number of ports. 2. A
device for making, breaking, or changing the connections in an electrical circuit.
Topology - A network’s topology is a logical characterization of how the
devices on the network are connected and the distances between them. The
most common network devices include hubs, switches, routers, and gateways.
Most large networks contain several levels of interconnection, the most important of which include edge connections, backbone connections, and wide-area
connections.
UTP - Unshielded twisted pair is the most common kind of copper telephone
wiring. Twisted pair is the ordinary copper wire that connects home and many
business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are
twisted around each other. Each signal on twisted pair requires both wires.
Since some telephone sets or desktop locations require multiple connections,
twisted pair is sometimes installed in two or more pairs, all within a single
cable.
1110
Appendix C: Warranty Information
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.
IN NO EVENT SHALL LINKSYS’S 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 DOES NOT OFFER REFUNDS FOR ANY
PRODUCT.
LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PROCESSING AND RECEIVING YOUR REPLACEMENT. LINKSYS PAYS
FOR UPS GROUND ONLY. ALL CUSTOMERS LOCATED OUTSIDE OF
THE UNITED STATES OF AMERICA AND CANADA SHALL BE HELD
RESPONSIBLE FOR SHIPPING AND HANDLING CHARGES. PLEASE
CALL LINKSYS FOR MORE DETAILS.
Dimensions
SD205 3.66" x 1.18" x 3.54"
(93 mm x 30 mm x 90 mm)
SD208 5.12" x 1.18" x 5.00"
(130 mm x 30 mm x 127 mm)
SD216 5.12" x 1.57" x 5.00"
(130 mm x 40 mm x 127 mm)
Unit Weight
SD205 8 oz. (0.23 kg)
SD208 15 oz. (0.43 kg)
SD216 19 oz. (0.54 kg)
Power
SD205 DC 12V, 500 mA
SD208 DC 12V, 500 mA
SD216 DC 12V, 1.5 A
Certifications FCC Class B, CE Mark
Operating Temp. 32ºF to 122ºF (0ºC to 50ºC)
Storage Temp. -40ºF to 158ºF (-40ºC to 70ºC)
Operating Humidity 20% to 95%, Non-Condensing
Storage Humidity 5% to 90%, Non-Condensing
Environmental
12
Appendix D: Contact Information
For help with the installation or operation of this 10/100 Switch, contact
Linksys Technical Support at one of the phone numbers or Internet addresses
below.
Sales Information 800-546-5797 (LINKSYS)
Technical Support 800-326-7114
RMA (Return Merchandise
Authorization) Issues www.linksys.com (or call 949-271-5461)
Fax 949-265-6655
E-mail support@linksys.com
We b http://www.linksys.com
FTP Site ftp.linksys.com
© Copyright 2003 Cisco Systems, Inc. All Rights Reserved.
http://www.linksys.com
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