16-Port and 24-Port
10/100 Switches
Use this guide to install the following products:
SR216
SR224
16-Port 10/100 Switch
24-Port 10/100 Switch
User Guide
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Table of Contents
Chapter 1: Introduction
The 10/100 Switch
Features
Chapter 1: Introduction
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The 10/100 Switch
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With its advanced switching technology, the Linksys 16- or 24-Port 10/100
Switch will boost your network performance with much more than just full
duplex data transfer and dedicated bandwidth. It features 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.
Chapter 2: Getting to Know the 10/100 Switch 2
Overview
Front Panel LEDs and Ports
Back and Side Panel Features
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You have several installation options. The Switch’s compact size fits onto your
desktop, or use the wall mount slots to hang it somewhere out of the way. If
your network equipment is in a rack, install it using the included rack mount
brackets.
Chapter 3: Connecting the 10/100 Switch
Overview
Connecting Network Devices
Placement Options
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No matter how intensive your network demands, the Linksys 16- or 24-Port
10/100 Switch has speed, flexibility, and reliability that you can count on.
Appendix A: Glossary
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Appendix B: Specifications
Environmental
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Features
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Ideal for Integrating Your 10BaseT and 100BaseTX Network Hardware
16 or 24 10/100 Ports Provide Dedicated Bandwidth in Half- or Full-
Duplex Modes
Appendix C: Warranty Information
Appendix D: Contact Information
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Switched 10/100 Ports Run at up to 200Mbps in Full-Duplex Mode
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
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Chapter 2: Getting to Know the
10/100 Switch
Overview
Figure 2-3
The 16- and 24-Port 10/100 Switches differ in number of LEDs and ports.
Pictured here is the 16-Port 10/100 Switch; however, the other Switch is simi-
lar in form.
The security slot is located on a side panel (see Figure 2-3).
Front Panel LEDs and Ports
(security slot) The security slot is where you can attach a lock so the Switch
will be protected from theft.
Figure 2-1
The LEDs and network ports are located on the front panel of the Switch.
System
Green. The System LED will light up when the Switch is
powered on.
1-16 or 1-24
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.
Back and Side Panel Features
Figure 2-2
The power port is located on the back panel of the Switch (see Figure 2-2).
(power)
The power port is where you will connect the included power
cord.
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Connecting Network Devices
Chapter 3: Connecting the 10/100
SwitchPlanning Your Network Layout
Overview
To connect network devices to the Switch, follow these instructions. (The 16-
Port 10/100 Switch is shown in Figure 3-2.)
1. Make sure all the devices you will connect to the Switch are powered off.
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.
2. Connect a Category 5 Ethernet network cable to one of the numbered ports
on the Switch.
Figure 3-2
3. Connect the other end to a PC or other network device.
4. Repeat steps 2 and 3 to connect additional devices.
Figure 3-1
When you connect your network devices, make sure you don’t exceed the max-
imum cabling distances, which are listed in the following table:
5. Connect the supplied power cord to the power port on the Switch’s back
panel.
Maximum Cabling Distances
From
Switch
To
Switch or Hub*
Hub
Maximum Distance
6. Plug the other end of the power cord into an electrical outlet.
100 meters (328 feet) 1
5 meters (16.4 feet) 1
Hub
7. Power on the devices connected to the Switch. Each active port’s corre-
sponding LED will light up on the Switch.
100 meters (328 feet) 1
Switch or Hub
Computer
*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).
Proceed to the following section, “Placement Options.”
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Placement Options
Appendix A: Glossary
There are three ways to physically install the Switch:
10BaseT - An Ethernet standard that uses twisted wire pairs.
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set the Switch on its four rubber feet
mount the Switch in a standard rack (1U high)
hang the Switch on a wall using its wall-mount slots.
100BaseTX - IEEE physical layer specification for 100 Mbps over two pairs of
Category 5 UTP or STP wire.
To rack mount the Switch, follow these instructions:
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 auto-
MDI/MDI-X capability eliminates the need for crossover cables.
1. The Switch has four mounting holes on each side. Screw an included mount-
ing bracket into each side.
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.
2. Lift the Switch into the rack, and secure the brackets with additional screws
(not included).
To hang the Switch on a wall, follow these instructions:
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.
1. The wall-mount slots are two
crisscross slots on the Switch’s
bottom panel (see Figure 3-3).
The distance between the two
slots is 95 mm. Attach two
screws to the wall, so that the
Switch’s wall-mount slots line
up with the two screws.
Figure 3-3
CAT 5e - The additional cabling performance parameters of return loss and far-
end crosstalk (FEXT) specified for 1000BASE-T and not specified for
10BASE-T and 100BASE-TX are related to differences in the signaling imple-
mentation. 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 direc-
tions on the same wire pair; that is, both the transmit and receive pair occupy
the same wire pair.
2. Maneuver the Switch so the screws are inserted into the two slots.
Congratulations!
The installation of the 10/100 Switch is complete.
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.
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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.
Appendix B: Specifications
Model Number
SR216 16-Port 10/100 Switch
SR224 24-Port 10/100 Switch
Mbps (Megabits per second) - One million bits per second; unit of measure-
ment for data transmission.
Standards
IEEE 802.3, IEEE 802.3u
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.
Ports
SR216
SR224
16 RJ-45 10/100
24 RJ-45 10/100
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 con-
nect a MDI-X port to another hub or switch, use a crossover cable.
Cabling Type
Category 5 Ethernet or Better
LEDs
SR216
SR224
Network - A system that transmits any combination of voice, video and/or data
between users.
System, 1 through 16
System, 1 through 24
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 cir-
cuit.
Security Feature
Security Slot
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 impor-
tant 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 electro-
magnetic 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.
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Environmental
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.
Dimensions
SR216
11.00" x 1.75" x 9.45"
(279.4 mm x 44.5 mm x 240 mm)
11.00" x 1.75" x 9.45"
SR224
(279.4 mm x 44.5 mm x 240 mm)
IN NO EVENT SHALL LINKSYS’S LIABILITY EXCEED THE PRICE
PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCI-
DENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE
USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS
DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY
PRODUCT.
Unit Weight
SR216
SR224
3.3 lbs. (1.5 kg)
3.3 lbs. (1.5 kg)
Power
SR216
SR224
Input 110 V AC, Output 16.5 W
12.5 W Internal 100 ~ 240 V AC
LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PRO-
CESSING 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.
Certifications
Operating Temp.
Storage Temp.
FCC Class B, CE
0ºC to 50ºC (32ºF to 122ºF)
-40ºC to 70ºC (-40ºF to 158ºF)
Operating Humidity 20% to 95%, Non-Condensing
Storage Humidity 5% to 90%, Non-Condensing
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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
Technical Support
RMA (Return Merchandise
Authorization) Issues
Fax
800-546-5797 (LINKSYS)
800-326-7114
949-265-6655
E-mail
Web
FTP Site
ftp.linksys.com
© Copyright 2003 Cisco Systems, Inc. All Rights Reserved.
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