Allied Telesis AT-GS924GB User Manual
Installation
Gigabit
Ethernet
®
Switch
AT-GS924GB
Guide
PN 613-50432-00 Rev C
Copyright 2003 Allied Telesyn, Inc.
960 Stewart Drive Suite B, Sunnyvale, CA 94085 USA
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc.
All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks
of their respective owners.
Allied Telesyn, Inc. reserves the right to make changes in specifications and other information contained in this document without
prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn, Inc. be
liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising
out of or related to this manual or the information contained herein, even if Allied Telesyn, Inc. has been advised of, known, or
should have known, the possibility of such damages.
Electrical Safety and Emission
Statement
Standards: This product meets the following standards.
U.S. Federal Communications Commission
RADIATED ENERGY
Note: 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 when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with this instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
Note: Modifications or changes not expressly approved by the manufacturer or the FCC can void your right to operate this
equipment.
Canadian Department of Communications
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
RFI Emission FCC Class A, EN55022 Class A, VCCI Class A, C-TICK, EN61000-3-2,
Warning: In a domestic environment this product may cause radio interference in which case the user may be required to take
adequate measures.
Immunity EN55024
Electrical Safety UL 1950 (UL/cUL)), EN60950 (TUV)
Laser EN60825
Important: Appendix C contains translated safety statements for installing this equipment. When you see the
C for the translated safety statement in your language.
Wichtig: Anhang C enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn Sie
Anhang C den übersetzten Sicherheitshinweis in Ihrer Sprache nach.
Vigtigt: Tillæg C indeholder oversatte sikkerhedsadvarsler, der vedrører installation af dette udstyr. Når De ser symbolet
De slå op i tillæg C og finde de oversatte sikkerhedsadvarsler i Deres eget sprog.
Belangrijk: Appendix C bevat vertaalde veiligheidsopmerkingen voor het installeren van deze apparatuur. Wanneer u de
raadpleeg Appendix C voor vertaalde veiligheidsinstructies in uw taal.
Important: L'annexe C contient les instructions de sécurité relatives à l'installation de cet équipement. Lorsque vous voyez le
symbole
Tärkeää: Liite C sisältää tämän laitteen asentamiseen liittyvät käännetyt turvaohjeet. Kun näet
turvaohjetta liitteestä C.
Importante: l’Appendice C contiene avvisi di sicurezza tradotti per l’installazione di questa apparecchiatura. Il simbolo
di consultare l’Appendice C per l’avviso di sicurezza nella propria lingua.
Viktig: Tillegg C inneholder oversatt sikkerhetsinformasjon for installering av dette utstyret. Når du ser
for å finne den oversatte sikkerhetsinformasjonen på ønsket språk.
Importante: O Anexo C contém advertências de segurança traduzidas para instalar este equipamento. Quando vir o símbolo
leia a advertência de segurança traduzida no seu idioma no Anexo C.
Importante: El Apéndice C contiene mensajes de seguridad traducidos para la instalación de este equipo. Cuando vea el símbolo
, vaya al Apéndice C para ver el mensaje de seguridad traducido a su idioma.
Obs! Bilaga C innehåller översatta säkerhetsmeddelanden avseende installationen av denna utrustning. När du ser
till Bilaga C för att läsa det översatta säkerhetsmeddelandet på ditt språk.
2
, reportez-vous à l'annexe C pour consulter la traduction de ces instructions dans votre langue.
EN61000-3-3
3
5
1
4
, go to Appendix
sehen, schlagen Sie in
, skal
ziet,
-symbolin, katso käännettyä
, indica
, åpner du til Tillegg C
, skall du gå
,
iii
Table of Contents
Preface ....................................................................................................................................................................................................................vii
How This Guide is Organized ...........................................................................................................................................................................vii
Document Conventions ...................................................................................................................................................................................viii
Where to Find Current Product Documentation .......................................................................................................................................ix
Contacting Allied Telesyn Technical Support .............................................................................................................................................. x
Online Support............................................................................................................................................................................................... x
Telephone Support....................................................................................................................................................................................... x
Management Software Updates .....................................................................................................................................................................xi
For Sales or Corporate Information ...............................................................................................................................................................xii
Chapter 1
Product Description ...........................................................................................................................................................................................1
Features .....................................................................................................................................................................................................................2
Components ............................................................................................................................................................................................................3
Hardware Feature Description ..........................................................................................................................................................................4
Twisted Pair Ports.......................................................................................................................................................................................... 4
Gigabit Interface Converter (GBIC) Expansion Slots......................................................................................................................... 5
LEDs.................................................................................................................................................................................................................... 6
AC Power Connector.................................................................................................................................................................................... 6
A Few Ethernet Switching Basics ......................................................................................................................................................................7
MAC Address Table....................................................................................................................................................................................... 7
Duplex Mode................................................................................................................................................................................................... 8
Store and Forward......................................................................................................................................................................................... 8
Backpressure and Flow Control ............................................................................................................................................................... 9
Network Topologies ............................................................................................................................................................................................10
Power Workgroup Topology................................................................................................................................................................... 10
Collapsed Backbone................................................................................................................................................................................... 11
Chapter 2
Installation ............................................................................................................................................................................................................13
Reviewing Safety Precautions .........................................................................................................................................................................14
Selecting a Site for the Switch .........................................................................................................................................................................15
Planning the Installation ...................................................................................................................................................................................16
Unpacking the Switch ........................................................................................................................................................................................17
Installing the Switch in a Rack .........................................................................................................................................................................18
Attaching the Rubber Feet ...............................................................................................................................................................................18
Installing an Optional GBIC Module ..............................................................................................................................................................19
Cabling and Powering ON the Switch ..........................................................................................................................................................21
Warranty Registration .........................................................................................................................................................................................25
v
Chapter 3
Troubleshooting ................................................................................................................................................................................................ 27
Appendix A
Technical Specifications ................................................................................................................................................................................31
Physical Specifications .......................................................................................................................................................................................31
Environmental Specifications .........................................................................................................................................................................32
Power Specifications ..........................................................................................................................................................................................33
Safety and Electromagnetic Emissions Certifications ............................................................................................................................34
Connectors .............................................................................................................................................................................................................35
RJ-45 Twisted Pair Port Pinouts............................................................................................................................................................. 35
SC Connector................................................................................................................................................................................................ 36
Appendix B
Translated Electrical Safety and Emission Information .................................................................................................................37
vi
Preface
This guide contains the hardware installation instructions for the
AT-GS924GB Gigabit Ethernet Switch
How This Guide is Organized
This manual contains the following chapters and appendices:
Chapter 1, Product Description, describes the features and
components of the switches.
Chapter 2, Installation, contains the installation instructions for the
switches.
Chapter 3, Troubleshooting, provides information on how to resolve
problems that might occur with the switches.
Appendix A, Technical Specifications, contains the technical
specifications for the switches.
Appendix B, Translated Electrical Safety and Emission Information,
contains translations of the warnings and cautions in the manual.
vii
Preface
Document Conventions
This document uses the following conventions to highlight important
information:
Note
Notes provide additional information.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
viii
AT-GS924GB Gigabit Ethernet Switch Installation Guide
Where to Find Current Product Documentation
The installation and user guides for all Allied Telesyn products are
available in Portable Document Format (PDF) from the Allied Telesyn
web site at www.alliedtelesyn.com. You can view the documents
online or download them onto a local workstation or server.
ix
Preface
Contacting Allied Telesyn Technical Support
You can contact Allied Telesyn technical support online or by telephone.
Online Support You can request technical support online by accessing the Knowledge
Base from our web site at http://kb.alliedtelesyn.com. You can use the
Knowledge Base to submit questions to our technical support staff and
review answers to previously asked questions.
Telephone
Support
For Technical Support by telephone, contact Allied Telesyn at one of the
following locations:
Americas
United States, Canada, Mexico,
Central America, South America
Tel: 1 (800) 428-4835
Asia
Singapore, Taiwan, Thailand,
Malaysia, Indonesia, Korea,
Philippines, China,
India, Hong Kong
Tel: (+65) 3815-612
Australia
Australia, New Zealand
Tel: 1 (800) 000-880
Europe
Tel: 00 800 287 877 678
Germany
Germany, Switzerland, Austria,
Eastern Europe
Tel: (+49) 81 1999370
Italy
Italy, Spain, Portugal, Greece,
Turkey, Israel
Tel: (+39) 02-41-30-41
Japan
Tel: (+81) 3-3443-5640
United Kingdom
United Kingdom, Denmark, Norway,
Sweden, Finland, Iceland
Tel: (+44) 1-235-442560
France
France, Belgium, Luxembourg, The
Netherlands, Middle East, Africa
Tel: (+33) 1-60-92-15-25
x
Management Software Updates
Allied Telesyn periodically updates the management software programs
for managed products. You can obtain a new version of a management
software program from our web site at www.alliedtelesyn.com or our
FTP server at ftp.alliedtelesyn.com. To use the FTP server, enter
anonymous for the user name when you log in and your e-mail address
for the password.
AT-GS924GB Gigabit Ethernet Switch Installation Guide
xi
Preface
For Sales or Corporate Information
You can contact Allied Telesyn for sales or corporate information at the
location listed below:
Allied Telesyn, Inc.
19800 North Creek Parkway, Suite 200
Bothell, WA 98011
Tel: 1 (425) 487-8880
Fax: 1 (425) 489-9191
xii
Chapter 1
Product Description
The AT-GS924GB is an unmanaged, Layer 2 Gigabit Ethernet switch
designed to simplify the task of creating or expanding an Ethernet, Fast
Ethernet, or Gigabit Ethernet network.
The sections in this chapter are as follows:
Features on page 2
Components on page 3
Hardware Feature Description on page 4
A Few Ethernet Switching Basics on page 7
Network Topologies on page 10
1
Product Description
Features
AT-GS924GB Gigabit Ethernet switch features include:
24 10/100/1000 Mbps twisted pair ports
2 GBIC expansion slots
Visual diagnostic LEDs
Auto-negotiation (IEEE 802.3u-compliant)
Backpressure and flow control (IEEE 802.3x-compliant)
Store and forward packet handling
MAC address table capable of storing up to 32K entries with
automatic aging
2
Components
AT-GS924GB Gigabit Ethernet Switch Installation Guide
Figure 1 illustrates the front panel of the AT-GS924GB switch.
AT-GS924GB
10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks
1 3 5 7 9 11 13 15 17 19 21 23
2 4 6 8 10 12 14 16 18 20 22 24
10/100/1000Base Twisted Pair PortsPort LEDs
GBIC Expansion Slots
CLASS 1
LASER PRODUCT
DO NOT STARE
INTO BEAM
23 24
Figure 1 Front Panel of the AT-GS924GB switch
Figure 2 illustrates the back panel of the AT-GS924GB switch.
100-240 VAC
AC Power Connector
Figure 2 Back Panel of the AT-GS924GB switch
GBICGBIC
3
Product Description
Hardware Feature Description
The following sections describe hardware features of the
AT-GS924GB Gigabit Ethernet switch:
Twisted Pair Ports
Gigabit Interface Converter (GBIC) Expansion Slots
System and Port LEDs
AC Power Connector
Twisted Pair
Ports
The AT-GS924GB features 24 twisted pair ports.
Type of Connector
The twisted pair ports feature 8-pin, RJ-45 connectors. (For the port
pinouts, refer to RJ-45 Twisted Pair Port Pinouts on page 35.
Speed
The ports are 10Base-T, 100Base-TX, and 1000Base-T compliant and are
capable of 10 megabits per second (Mbps), 100 Mbps, and 1000 Mbps
speeds. The ports are IEEE 802.3u Auto-negotiation compliant. With
Auto-negotiation, the switch automatically matches the highest
possible common speed between each switch port and each end-node.
For example, if an end-node is capable of only 10 Mbps, the switch sets
the port connected to the end-node to 10 Mbps.
Duplex Mode
Each twisted pair port on the switch can operate in either half- or full
duplex mode. The twisted pair ports are IEEE 802.3u-compliant and will
Auto-Negotiate the duplex mode setting.
Note
In order for the switch to set the duplex mode for each port
correctly, the end-nodes that you connect to the switch ports
should also use Auto-Negotiation. Otherwise, a duplex mode
mismatch can occur, affecting network performance. For further
information, refer to Duplex Mode on page 8.
Maximum Distance
Each twisted pair port has a maximum operating distance of 100 meters
(328 feet).
Type of Cabling
For 10 Mbps operation, Category 3 or better 100 ohm shielded or
unshielded twisted pair cabling is required. For 100 or 1000 Mbps
operation, Category 5 and Enhanced Category 5 (5E) 100 ohm shielded
or unshielded twisted pair cabling is required.
4
AT-GS924GB Gigabit Ethernet Switch Installation Guide
Auto-MDI
For port speeds of 10 or 100 Mbps, the ports are auto-MDI. They
automatically configure themselves as either MDI or MDI-X. This feature
allows you to use either straight-through or crossover twisted pair
cables to connect devices to the ports. For port speeds of 1000 Mbps,
you must use a straight through twisted pair cable.
Gigabit
Interface
Converter
(GBIC)
Expansion Slots
The AT-GS924GB Gigabit Ethernet Switch has two Gigabit Interface
Converter (GBIC) expansion slots on the front panel that correspond to
Ports 23 and 24 respectfully. Each slot can accommodate one optional
fiber optic GBIC Ethernet module.
Note
If a GBIC module is installed in expansion slot Port 23 or 24, the
corresponding twisted pair Port 23 or 24 cannot be used.
A GBIC module is a fast and easy way to add an 1000 Mbps fiber optic
port to a Gigabit Ethernet switch. GBIC modules can be used to extend
the distance of your network, build a high-speed backbone network
between switches, or connect additional nodes to the network, such as
high-speed servers.
Figure 3 shows an example of a fiber optic GBIC module.
Figure 3 GBIC Module
Note
For a list of the Allied Telesyn GBIC modules supported by the
AT-GS924GB Gigabit Ethernet Switch, contact your Allied Telesyn
sales representative.
5
Product Description
LEDs The port LEDs on the front panel display port status information. Each
port has four LEDs.
AT-GS924GB
10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks
Figure 4 LEDs
Table 1 below describes the AT-GS924GB port LEDs.
Table 1 Port LED Descriptions
LED State Description
10 Green Indicates that the port is operating at 10
Mbps.
AC Power
Connector
100 Green Indicates that the port is operating at 100
Mbps.
10 and
100
Green Indicates that the port is operating at
1000 Mbps.
ACT OFF Indicates that there is no activity on the
port.
Flashing Green Indicates that the port is transmitting
and/or receiving data packets.
FDX OFF Indicates that the port is operating in
half-duplex mode.
Green Indicates that the port is operating in full-
duplex mode.
The AT-GS924GB switch has a single AC power supply socket on the
back panel with auto-switch AC inputs. Refer to Technical
Specifications on page 31, for the input voltage range. To power ON or
OFF the switch, you connect or disconnect the power cord.
6
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