Allied Telesis AT-9000/24 User manual

613-000239 Rev. A
Layer 2 Gigabit
Ethernet Switch
AT-9000/24
Installation Guide

Copyright ©2005 Allied Telesyn, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc.
Microsoft and Internet Explorer are registered trademarks of Microsoft Corporation. Netscape Navigator is a registered
trademark of Netscape Communications Corporation. 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.

3
Electrical Safety and Emissions Standards
This product meets the following standards.
RFI Emissions FCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, C-TICK,
CE
Immunity EN55024
Electrical Safety EN60950 (TUV), UL 60950 (CULUS)
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 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 of by the manufacturer or the FCC, can void your right to operate
this equipment.
Industry Canada
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.
Warning: In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
Laser Safety EN60825

4
Translated Safety Statements
Important: Appendix B contains translated safety statements for installing this equipment. When
you see the , go to Appendix B for the translated safety statement in your language.
Wichtig: Anhang B enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn
Sie sehen, schlagen Sie in Anhang B den übersetzten Sicherheitshinweis in Ihrer Sprache nach.
Importante: El Apéndice B contiene mensajes de seguridad traducidos para la instalación de este
equipo. Cuando vea el símbolo , vaya al Apéndice B para ver el mensaje de seguridad traducido
a su idioma.
Important : L'annexe B contient les instructions de sécurité relatives à l'installation de cet
équipement. Lorsque vous voyez le symbole , reportez-vous à l'annexe B pour consulter la
traduction de ces instructions dans votre langue.
Importante: l’Appendice B contiene avvisi di sicurezza tradotti per l’installazione di questa
apparecchiatura. Il simbolo , indica di consultare l’Appendice B per l’avviso di sicurezza nella
propria lingua.
Важно:Приложение B содержит переведенную инструкцию по безопасности при установке
данного устройства. Если Вы встретите , перейдите кПриложению B для получения
переведенной инструкции по безопасности.

5
Preface ................................................................................................................................................................................11
Safety Symbols Used in this Document................................................................................................................................12
Where to Find Web-based Guides .......................................................................................................................................13
Contacting Allied Telesyn .....................................................................................................................................................14
Online Support ..............................................................................................................................................................14
Email and Telephone Support.......................................................................................................................................14
Returning Products........................................................................................................................................................14
Sales or Corporate Information .....................................................................................................................................14
Management Software Updates....................................................................................................................................14
Chapter 1: Overview ..........................................................................................................................................................15
Features ...............................................................................................................................................................................16
Front and Back Panels .........................................................................................................................................................17
Ports .....................................................................................................................................................................................18
Twisted Pair Ports .........................................................................................................................................................18
SFP Ports ......................................................................................................................................................................18
RS-232 Console Port ....................................................................................................................................................19
LEDs.....................................................................................................................................................................................20
Power Supply .......................................................................................................................................................................22
Ethernet Switching Basics ....................................................................................................................................................23
MAC Address Table ......................................................................................................................................................23
Duplex Mode .................................................................................................................................................................23
Store and Forward.........................................................................................................................................................24
Back Pressure and Flow Control...................................................................................................................................24
Network Topologies..............................................................................................................................................................26
Power Workgroup Topology ..........................................................................................................................................26
Collapsed Backbone .....................................................................................................................................................27
Chapter 2: Installation .......................................................................................................................................................29
Reviewing Safety Precautions..............................................................................................................................................30
Selecting a Site for the Switch..............................................................................................................................................32
Cabling .................................................................................................................................................................................33
Unpacking the Switch ...........................................................................................................................................................34
Installing the Switch on a Desktop........................................................................................................................................35
Installing a Switch in a Rack.................................................................................................................................................36
Installing an Optional SFP Transceiver ................................................................................................................................39
Cabling and Powering On the Switch ...................................................................................................................................41
Connecting the Twisted Pair Cables .............................................................................................................................41
Connecting the Fiber Optic Cables ...............................................................................................................................41
Powering On the Switch ................................................................................................................................................42
Starting a Local Management Session.................................................................................................................................44
Starting a Local Management Session..........................................................................................................................44
Chapter 3: Troubleshooting ..............................................................................................................................................47
Appendix A: Technical Specifications .............................................................................................................................49
Physical Specifications .........................................................................................................................................................49
Environmental Specifications................................................................................................................................................49
Power Specifications ............................................................................................................................................................49
Safety and Electromagnetic Emissions Certifications...........................................................................................................49
Connectors and Port Pinouts................................................................................................................................................50
Contents

Contents
6
Appendix B: Translated Safety Statements ....................................................................................................................53

7
Figure 1. AT-9000/24 Front Panel .......................................................................................................................................17
Figure 2. AT-9000/24 Back Panel .......................................................................................................................................17
Figure 3. AT-9000/24 System and Port LEDs .....................................................................................................................20
Figure 4. Power Workgroup Topology.................................................................................................................................26
Figure 5. Collapsed Backbone - Hub Topology...................................................................................................................27
Figure 6. Attaching the Rubber Feet ...................................................................................................................................35
Figure 7. Attaching the Rack-Mount Bracket.......................................................................................................................36
Figure 8. Mounting the Switch on the Rack.........................................................................................................................36
Figure 9. Removing the Dust Plug from the SFP Slot .........................................................................................................39
Figure 10. Inserting the SFP................................................................................................................................................40
Figure 11. Connecting the Twisted Pair Data Cables..........................................................................................................41
Figure 12. Removing the Dust Cover from the SFP ............................................................................................................42
Figure 13. Connecting the Fiber Optic Cable ......................................................................................................................42
Figure 14. Plugging in the AC Power Cord..........................................................................................................................43
Figure 15. Connecting the Console Cable...........................................................................................................................44
Figure 16. Login Menu.........................................................................................................................................................45
Figure 17. Main Menu..........................................................................................................................................................45
Figure 18. RJ-45 Connector and Port Pin Layout................................................................................................................50
Figures

Figures
8

9
Table 1. Safety Symbols .....................................................................................................................................................12
Table 2. System LEDs ........................................................................................................................................................20
Table 3. 10/100/1000Base-T Port LEDs .............................................................................................................................20
Table 4. SFP Port LEDs .....................................................................................................................................................21
Table 5. Twisted Pair Cabling and Distances .....................................................................................................................33
Table 6. MDI Pin Signals (10Base-T or 100Base-TX) ........................................................................................................50
Table 7. MDI-X Pin Signals (10Base-T or 100Base-TX) ....................................................................................................50
Table 8. RJ-45 1000Base-T Connector Pinouts .................................................................................................................51
Tables

Tables
10

11
Preface
This guide contains instructions on how to install the AT-9000/24 Gigabit
Ethernet Switch. This preface contains the following sections:
“Safety Symbols Used in this Document” on page 12
“Where to Find Web-based Guides” on page 13
“Contacting Allied Telesyn” on page 14

Chapter : Preface
12
Safety Symbols Used in this Document
This document uses the safety symbols defined in Table 1.
Table 1. Safety Symbols
Symbol Meaning Description
Caution Performing or omitting a specific action may
result in equipment damage or loss of data.
Warning Performing or omitting a specific action may
result in electrical shock.

AT-9000/24 Gigabit Ethernet Switch Installation Guide
13
Where to Find Web-based Guides
The installation and user guides for all Allied Telesyn products are
available in portable document format (PDF) on our web site at
www.alliedtelesyn.com. You can view the documents online or download
them onto a local workstation or server.

Chapter : Preface
14
Contacting Allied Telesyn
This section provides Allied Telesyn contact information for technical
support as well as sales and corporate information.
Online Support You can request technical support online by accessing the Allied Telesyn
Knowledge Base: 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.
Email and
Telephone
Support
For Technical Support via email or telephone, refer to the Support &
Services section of the Allied Telesyn web site: www.alliedtelesyn.com.
Returning
Products
Products for return or repair must first be assigned a return materials
authorization (RMA) number. A product sent to Allied Telesyn without an
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn Technical Support
through our web site: www.alliedtelesyn.com.
Sales or
Corporate
Information
You can contact Allied Telesyn for sales or corporate information through
our web site: www.alliedtelesyn.com. To find the contact information for
your country, select Contact Us -> Worldwide Contacts.
Management
Software Updates
New releases of management software for our managed products are
available from either of the following Internet sites:
Allied Telesyn web site: www.alliedtelesyn.com
Allied Telesyn FTP server: ftp://ftp.alliedtelesyn.com
If you prefer to download new software from the Allied Telesyn FTP server
from your workstation’s command prompt, you will need FTP client
software and you must log in to the server. Enter “anonymous” for the user
name and your email address for the password.

15
Chapter 1
Overview
The AT-9000/24 Gigabit Ethernet Switch is designed to simplify the task of
creating or expanding an Ethernet, Fast Ethernet, or Gigabit Ethernet
network.
This chapter contains the follows sections:
“Features” on page 16
“Front and Back Panels” on page 17
“Ports” on page 18
“LEDs” on page 20
“Power Supply” on page 22
“Ethernet Switching Basics” on page 23
“Network Topologies” on page 26

Chapter 1: Overview
16
Features
The features of the AT-9000/24 Gigabit Ethernet Switch include:
LEDs for unit and port status
24 Auto-Negotiating 10/100/1000Base-T twisted pair ports with RJ-45
connectors
Four combo small form-factor pluggable (SFP) ports
Auto MDI/MDI-X on the twisted pair ports
IEEE 802.3 and IEEE 802.3u compliant
IEEE 802.3x flow control in full-duplex operation; back pressure in
half-duplex operation
Store and forward switching mode
MAC address table capacity of up to 8K addresses with automatic
aging
Menus- and web-based configuration using the AT-S81 management
software

AT-9000/24 Gigabit Ethernet Switch Installation Guide
17
Front and Back Panels
Figure 1 illustrates the front panels of the AT-9000/24 Gigabit Ethernet
Switch.
Figure 1. AT-9000/24 Front Panel
Figure 2 illustrates the back panel of the AT-9000/24 Gigabit Ethernet
Switch.
Figure 2. AT-9000/24 Back Panel
10/100/1000Base Twisted Pair Ports
Port and System LEDs
793
AT-9000/24
24 Port Gigabit Ethernet Switch
13579111315 17 19 21R 23R
2 4 6 8 10 12 14 16 18 20 22R 24R
POWER
21 22
23 24
SFP
LINK ACT
1000
10/100
PORT ACTIVITY
SFP Ports Console Port
794

Chapter 1: Overview
18
Ports
The AT-9000/24 Gigabit Ethernet Switch features 24 twisted pair ports
and four combo SFP ports.
Twisted Pair
Ports
The twisted pair ports feature 8-pin RJ-45 connectors. (For the port
pinouts, refer to “Connectors and Port Pinouts” on page 50.)
The ports on the AT-9000/24 switch 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.
Each twisted pair port on the switches can operate in either half- or full-
duplex mode. The twisted pair ports are IEEE 802.3u-compliant and 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 23.
Each twisted pair port has a maximum operating distance of 100 m
(328 feet).
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.
The twisted pair 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.
SFP Ports The four SFP ports can operate in place of their twisted pair port
equivalents to provide fiber optic connectivity. When an SFP is inserted in
the SFP ports (ports 21 through 24) and a fiber optic cable is connected,
the corresponding twisted pair port is disabled.

AT-9000/24 Gigabit Ethernet Switch Installation Guide
19
RS-232 Console
Port
The RS-232 console port uses the management cable supplied with the
switch. Through the console port you can connect to the switch and use
the menus-based AT-S81 management software user interface.

Chapter 1: Overview
20
LEDs
The LEDs on the front panel display the system and port status
information. Each port has two LEDs as shown in Figure 3.
Figure 3. AT-9000/24 System and Port LEDs
Table 2 describes the AT-9000/24 system LEDs.
Table 3 describes the LEDs for the 10/100/1000Base-T ports.
Table 2. System LEDs
LED State Description
POWER Off The switch is not receiving power.
On The switch is receiving power.
Table 3. 10/100/1000Base-T Port LEDs
LED State Description
SPEED On The port is operating at 1000 Mbps.
Off The port is operating at 10/100 Mbps or no
link is established.
LINK/ACT Off The port has not established a link with an
end node.
Blinking
Green
The port is transmitting or receiving data.
Green A valid link has been established on the port.
795
AT-9000/24
24 Port Gigabit Ethernet Switch
13579111315 17 19 21R 23R
2 4 6 8 10 12 14 16 18 20 22R 24R
POWER
21 22
23 24
SFP
LINK ACT
1000
10/100
PORT ACTIVITY