Cisco SR2024 - Small Business Unmanaged Switch User manual

USER GUIDE
BUSINESS SERIES
24-Port 10/100/1000
Gigabit Switch
Model: SR2024

i
24-Port 10/100/100 Gigabit Switch
About This User Guide
About This User Guide
Icon Descriptions
While reading through the User Guide, you may encounter various icons
designed to call attention to a specific item. Below are descriptions of
these icons:
NOTE: This check mark indicates that there is a note of interest
and is something that you should pay special attention to
while using the product.
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caution or warning and it is something that could damage
your property or product.
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or e-mail address.
Online Resources
Website addresses in this document are listed without http:// in front of
the address because most current web browsers do not require it. If you
use an older web browser, you may have to add http:// in front of the
web address.
Resource Website
Linksys www.linksys.com
Linksys International www.linksys.com/international
Glossary www.linksys.com/glossary
Network Security www.linksys.com/security

ii 24-Port 10/100/100 Gigabit Switch
About This User Guide
Copyright and Trademarks
Linksys is a registered trademark or trademark of
Cisco Systems, Inc. and/or its affiliates in the U.S.
and certain other countries. Copyright © 2008
Cisco Systems, Inc. All rights reserved. Other brands
and product names are trademarks or registered
trademarks of their respective holders.

iii
24-Port 10/100/100 Gigabit Switch
Table of Contents
Chapter 1: Introduction 1
The 10/100/1000 Gigabit Switch . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 2: Product Overview 3
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 3: Installation 5
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pre-Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . 6
Placement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Appendix A: Specifications 11
Appendix B: Warranty and Regulatory Information 13
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Exclusions and Limitations. . . . . . . . . . . . . . . . . . . . . . . . . 13
Obtaining Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . 15
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Appendix C: Regulatory Information 17
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Industry Canada Statement . . . . . . . . . . . . . . . . . . . . . . . . 18
Avis d’ Industrie Canada . . . . . . . . . . . . . . . . . . . . . . . . . . 18
User Information for Consumer Products Covered by EU Directive
2002/96/EC on Waste Electric and Electronic Equipment (WEEE) 19
Appendix D: Contact Information 27

iv 24-Port 10/100/100 Gigabit Switch
Table of Contents

1
24-Port 10/100/100 Gigabit Switch
Chapter 1: Introduction
Chapter 1:
Introduction
The 10/100/1000 Gigabit Switch
The 24-Port 10/100/1000 Gigabit Switch provides non-blocking,
wirespeed switching for your 10, 100, and 1000 megabit network
clients. Drop this Switch in place of your current workgroup hub or
switch, and you can upgrade your high-requirement workstations to full
Gigabit speeds as necessary, while continuing to service other clients at
their current speeds. Or build your network from the ground up, with
appropriate link speeds for each user’s requirements.
Either way, it’s perfect for graphics, multimedia, and other applications
that have to move large files across the network quickly. And with the
24-Port 10/100/1000 Gigabit Switch, when you need to expand your
network even further, its two MiniGBIC ports let you add fiber-optic
capability easily and cost effectively.
With the 24-Port 10/100/1000 Gigabit Switch, you can connect your
existing 10/100 Ethernet network to a Gigabit server backbone without
any additional equipment. All ports have automatic MDI/MDI-X crossover
detection, so you don’t have to worry about the cable type. Each port
independently and automatically negotiates speed and duplex mode.
Address learning and aging is supported, as well as 802.3x flow control
with head-of-line blocking prevention to keep your high-speed clients
from bogging down in lower-speed traffic. Fast store-and-forward
switching prevents damaged packets from being passed on into the
network. World famous Linksys reliability and the limited lifetime
warranty give you peace of mind and the rackmount form factor
integrates smoothly into your network infrastructure. Let the Linksys 24-
Port 10/100/1000 Gigabit Switch kick your network into high gear.

224-Port 10/100/100 Gigabit Switch
Chapter 1: Introduction
Features
24 RJ-45 ports for 10BASE-T/100BASE-TX/1000BASE-TX connections
Supports half duplex and full duplex modes
Autonegotiation support on all ports
Auto MDI/MDI-X support on all ports for easy cable detection
Efficient MAC Address learning engine supports up to 32K MAC
Addresses
Provides store-and-forward forwarding scheme
Fits in standard 19-inch rack using included rack-mount kit
Two miniGBIC ports for easy expansion to other miniGBIC equipped
switches
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3
Chapter 2: Product Overview
24-Port 10/100/100 Gigabit Switch
Chapter 2:
Product Overview
Front Panel
The LEDs and ports are located on the front panel of the Switch.
SR2024 24-Port 10/100/1000 Gigabit Switch
Link/Act
SYSTEM
Gigabit
miniGBIC2
miniGBIC1
Link/Act
Gigabit
(Shared with 24)(Shared with 12)
Front Panel
LEDs
System (Green) The System LED will light up when the
Switch is powered on.
Link/Act (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.
Gigabit (Amber) Each LED will light up when there is a Gigabit
connection made through its corresponding port. It will flash
when there is activity on its corresponding port.
Ports
1-24 The Switch is equipped with 24 auto-sensing RJ-45
ports. These RJ-45 ports support network speeds of either
10Mbps, 100Mbps, or 1000Mbps and can operate in half
and full-duplex modes. Auto-sensing technology enables
each port to automatically detect the speed of the device
connected to it and adjust its speed and duplex accordingly.
To connect a device to a port, you will need to use a network
cable. You will need to use Category 5 (or better) cables.

Chapter 2: Product Overview
424-Port 10/100/100 Gigabit Switch
MiniGBIC (1-2) The Switch is equipped with two miniGBIC
ports. These ports provide links to high-speed network
segments or individual workstations at speeds of up to
1000Mbps (Gigabit Ethernet). These ports are shared. If you
use the MiniGBIC1 port, then you cannot use port 12. If
you use the MiniGBIC2 port, then you cannot use port 24.
Back Panel
The power port is located on the back panel of the Switch.
Back Panel
(power) The power port is where you will connect the
included power cord.

5
24-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
Chapter 3:
Installation
Overview
This chapter will explain how to connect network devices to the Switch.
The following diagram shows a typical network configuration.
Internet
Cable./DSL
Modem Router Wireless Access Point
SR2024 24-Port 10/100/1000 Gigabit Switch
Link/Act
SYSTEM
Gigabit
miniGBIC2
miniGBIC1
Link/Act
Gigabit
(Shared with 24)(Shared with 12)
Desktop Notebook Server
Typical Network Configuration
When you connect your network devices, make sure you don’t exceed
the maximum cabling distance of 100 meters (328 feet).

624-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
Pre-Installation Considerations
Full-Duplex Considerations
The Switch provides full-duplex support for its RJ-45 ports. Full-duplex
operation allows data to be sent and received simultaneously, doubling
a port’s potential data throughput. If you will be using the Switch in
full-duplex mode, the maximum cable length using Category 5 cable is
328 feet (100 meters).
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100Base-TX connections
should also work for 1000Base-T, providing that all four wire pairs are
connected. However, it is recommended that for all critical connections,
or any new cable installations, Category 5e (enhanced Category 5)
or Category 6 cable should be used. The Category 5e specification
includes test parameters that are only recommendations for Category
5. Therefore, the first step in preparing existing Category 5 cabling for
running 1000Base-T is a simple test of the cable installation to be sure
that it complies with the IEEE 802.3ab standards.
Positioning the Switch
Before you choose a location for the Switch, observe the following
guidelines:
Make sure that the Switch is accessible and that the cables can be
connected easily.
Keep cabling away from sources of electrical noise, power lines, and
fluorescent lighting fixtures.
Position the Switch away from water and moisture sources.
To ensure adequate air flow around the Switch, be sure to provide a
minimum clearance of two inches (50mm).
Do not stack free-standing Switches more than four units high.
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24-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
Placement Options
There are two ways to physically install the Switch, either set the Switch
on its four rubber feet for desktop placement or mount the Switch in a
standard-sized, 19-inch high rack for rack-mount placement.
Desktop Placement
When placing the Switch on a desktop, please observe the following
guidelines:
Attach the rubber feet to the recessed areas on the bottom of the
Switch.
SR2024
24-Port 10/100/1000 Gigabit Switch
Link/Act
SYSTEM
Gigabit
miniGBIC2
miniGBIC1
Link/Act
Gigabit
(Shared with 24)
(Shared with 12)
Attaching the Rubber Feet
Place the Switch on a desktop near an AC power source.
Keep enough ventilation space for the switch and check the
environmental restrictions mentionedintheSpecifications Appendix
as you are placing the Switch.
Connect the Switch to network devices according to the Hardware
Installation instructions detailed in this guide.
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824-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
Rack-Mount Placement
When rack-mounting the Switch, please observe the following
guidelines:
Elevated Operating Ambient If installed in a closed or multi-unit
rack assembly, the operating ambient temperature of the rack
environment may be greater than room ambient. Therefore,
consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature
(Tma) specified by the manufacturer.
Reduced Air Flow Installation of the equipment in a rack should be
such that the amount of air flow required for safe operation of the
equipment is not compromised.
Mechanical Loading Mounting of the equipment in the rack
should be such that a hazardous condition is not achieved due to
uneven mechanical loading.
Circuit Overloading Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of the circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern.
Reliable Earthing Reliable earthing of rack-mounted equipment
should be maintained. Particular attention should be given to supply
connections other than direct connections to the branch circuit (e.g.
use of power strips).
To rack-mount the Switch in any standard 19-inch rack, follow the
instructions described below.
Place the Switch on a hard flat surface with the front panel faced
towards your front side.
Attach a rack–mount bracket to one side of the Switch with the
supplied screws and secure the bracket tightly.
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1.
2.

9
24-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
SR2024
24-Port 10/100/1000 Gigabit Switch
Link/Act
SYSTEM
Gigabit
miniGBIC2
miniGBIC1
Link/Act
Gigabit
(Shared with 24)
(Shared with 12)
Attaching the Brackets
Follow the same steps to attach the other bracket to the opposite
side.
After the brackets are attached to the Switch, use suitable screws to
securely attach the brackets to any standard 19-inch rack.
SR2024
24-Port 10/100/1000 Gigabit Switch
Link/Act
SYSTEM
Gigabit
miniGBIC2
miniGBIC1
Link/Act
Gigabit
(Shared with 24)
(Shared with 12)
Mounting in Rack
Connect the Switch to network devices according to the Hardware
Installation instructions.
3.
4.
5.

10 24-Port 10/100/100 Gigabit Switch
Chapter 3: Installation
Hardware Installation
To connect network devices to the Switch, follow these instructions:
Make sure all the devices you will connect to the Switch are powered
off.
Connect a Category 5 Ethernet network cable to one of the
numbered ports on the Switch.
NOTE: Use Category 5e Ethernet network cables for your
Gigabit connections.
Connect the other end to a PC or other network device.
Repeat steps 2 and 3 to connect additional devices.
If you are using a miniGBIC port, then connect a miniGBIC module
to the miniGBIC port. For detailed instructions, refer to the module’s
documentation.
NOTE: The miniGBIC ports are shared. Do not use port 12 if
you are using the miniGBIC1 port. Do not use port 24 if you are
using the miniGBIC2 port.
Connect the supplied power cord to the Switch’s power port, and
plug the other end into an electrical outlet.When connecting power,
always use a surge protector.
Power on the devices connected to the Switch. Each active port’s
corresponding LED will light up on the Switch.
Hardware installation is complete.
1.
2.
3.
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5.
6.
7.

11
24-Port 10/100/100 Gigabit Switch
Appendix A: Specifications
Appendix A:
Specifications
Model SR2024
Standards IEEE 802.3, 802.3u, 802.3x, 802.3ab
Ports 24 10/100/1000 Mbps RJ-45 ports
Cabling Type CAT5e or better
LEDs System, Link/Act 1-24, Gigabit 1-24
Dimensions 17.01" x 1.75" x 13.74"
W x H x D (432 x 44.5 x 349 mm)
Unit Weight 7.98 lb (3.621 kg)
Power 100-127/200-240V~1.0A/0.5A 50~60HZ
Certification FCC Class A, CE
Operating Temperature 32 to 104ºF (0 to 40ºC)
Storage Temperature -4 to 158ºF (-20 to 70ºC)
Operating Humidity 10 to 90%, Noncondensing
Storage Humidity 10 to 95%, Noncondensing
Specifications are subject to change without notice.

12 24-Port 10/100/100 Gigabit Switch
Appendix A: Specifications

13
24-Port 10/100/100 Gigabit Switch
Appendix B: Warranty Information
Appendix B:
Warranty and Regulatory
Information
Limited Warranty
Linksys warrants this Linksys hardware product against defects in
materials and workmanship under normal use for the Warranty
Period, which begins on the date of purchase by the original end-
user purchaser and lasts for the period specified for this product at
www.linksys.com/warranty. The internet URL address and the web
pages referred to herein may be updated by Linksys from time to time;
the version in effect at the date of purchase shall apply.
This limited warranty is non-transferable and extends only to the original
end-user purchaser. Your exclusive remedy and Linksys’ entire liability
under this limited warranty will be for Linksys, at its option, to (a) repair
the product with new or refurbished parts, (b) replace the product with
a reasonably available equivalent new or refurbished Linksys product,
or (c) refund the purchase price of the product less any rebates. Any
repaired or replacement products will be warranted for the remainder of
the original Warranty Period or thirty (30) days, whichever is longer. All
products and parts that are replaced become the property of Linksys.
Exclusions and Limitations
This limited warranty does not apply if: (a) the product assembly seal
has been removed or damaged, (b) the product has been altered or
modified, except by Linksys, (c) the product damage was caused by
use with non-Linksys products, (d) the product has not been installed,
operated, repaired, or maintained in accordance with instructions
supplied by Linksys, (e) the product has been subjected to abnormal
physical or electrical stress, misuse, negligence, or accident, (f) the
serial number on the Product has been altered, defaced, or removed,
or (g) the product is supplied or licensed for beta, evaluation, testing or
demonstration purposes for which Linksys does not charge a purchase
price or license fee.

14 24-Port 10/100/100 Gigabit Switch
Appendix B: Warranty Information
ALL SOFTWARE PROVIDED BY LINKSYS WITH THE PRODUCT, WHETHER
FACTORY LOADED ON THE PRODUCT OR CONTAINED ON MEDIA
ACCOMPANYINGTHEPRODUCT,ISPROVIDED“ASIS”WITHOUTWARRANTY
OF ANY KIND. Without limiting the foregoing, Linksys does not warrant
that the operation of the product or software will be uninterrupted or
error free. Also, due to the continual development of new techniques
for intruding upon and attacking networks, Linksys does not warrant
that the product, software or any equipment, system or network on
which the product or software is used will be free of vulnerability to
intrusion or attack. The product may include or be bundled with third
party software or service offerings. This limited warranty shall not apply
to such third party software or service offerings. This limited warranty
does not guarantee any continued availability of a third party’s service
for which this product’s use or operation may require.
TO THE EXTENT NOT PROHIBITED BY LAW, ALL IMPLIED WARRANTIES
AND CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY OR
FITNESS FOR A PARTICULAR PURPOSE ARE LIMITEDTOTHE DURATION OF
THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS AND WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, ANY IMPLIEDWARRANTY 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 limited
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,
REGARDLESS OF THE THEORY OF LIABILITY (INCLUDING NEGLIGENCE),
ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE
THE PRODUCT (INCLUDING ANY SOFTWARE), 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 limited warranty 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.