Allied Telesis AT-FS238b-2, AT-FS238a-1, AT-FS238b-1, AT-FS238a-2 User Manual

AT-FS238a/1 AT-FS238b/1 AT-FS238a/2 AT-FS238b/2

Bridging Converters

Installation Guide

PN 613-50431-00 Rev A

Ethernet is a registered trademark of Xerox 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.

Electrical Safety and Emission Compliance Statement

Standards: This product meets the following standards.

U.S. Federal Communications Commission

Declaration Of Conformity

Manufacturer Name: Allied Telesyn, Inc. Manufacturer Address: 960 Stewart Drive, Suite B

Manufacturer Telephone: 408-730-0950 Declares that the product: Bridging Converter Model Numbers: AT-FS238a/1, AT-FS238b/1,

This product complies with FCC Part 15B, Class B Limits: This device complies with part 15 of the FCC Rules. Operation is subject

to the following two conditions: (1) This device must not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Radiated Energy

Note: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of 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 in accordance with instructions, may cause harmful interference to radio or television reception, which can be determined 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 and the receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your authority to operate this equipment under Federal Communications Commission rules.

Sunnyvale, CA 94085, USA

AT-FS238a/2, AT-FS238b/2

Industry Canada

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

iii

Electrical Safety and Emission Compliance Statement

RFI Emission EN55022 Class B 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 Warning: This product requires shielded cables to comply with emission

and immunity standards. If it is used with unshielded cables, the user may be required to take measures to correct the interference problem at their own expense.

Electrical Safety EN60950, UL60950 Laser EN60825 Warning Class 1 Laser product. Warning Do not stare into the Laser beam.

At time of installation, the Fiber Optic Lasers comply with FDA Radiation Performance Standard 21CFR Subchapter J, applicable at date of manufacture.

This is a “Class 1 LED Product” (AT-FS201, AT-FS202 models) Important: Appendix B contains translated safety statements for installing

this equipment. When you see the safety statement in your language.

Wichtig: Anhang B enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn Sie den übersetzten Sicherheitshinweis in Ihrer Sprache nach.

Vigtigt: Tillæg B indeholder oversatte sikkerhedsadvarsler, der vedrører installation af dette udstyr. Når De ser symbolet B og finde de oversatte sikkerhedsadvarsler i Deres eget sprog.

Belangrijk: Appendix B bevat vertaalde veiligheidsopmerkingen voor het installeren van deze apparatuur. Wanneer u de Appendix B voor vertaalde veiligheidsinstructies in uw taal.

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.

Tärkeää: Liite B sisältää tämän laitteen asentamiseen liittyvät käännetyt turvaohjeet. Kun näet liitteestä B.

Importante: l’Appendice B contiene avvisi di sicurezza tradotti per l’installazione di questa apparecchiatura. Il simbolo l’Appendice B per l’avviso di sicurezza nella propria lingua.

Viktig: Till egg B inneho lder oversatt sikkerhetsinformasjon for instal lering av dette utstyret. Når du ser oversatte sikkerhetsinformasjonen på ønsket språk.

Importante: O Anexo B contém advertências de segurança traduzidas para instalar este equipamento. Quando vir o símbolo segurança traduzida no seu idioma no Anexo B.



, go to Appendix B for the translated



sehen, schlagen Sie in Anhang B



-symbolin, katso käännettyä turvaohjetta



, åpner du til Tillegg B for å finne den

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, skal De slå op i tillæg

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ziet, raadpleeg



, indica di consultare

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, leia a advertência de

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AT-FS238a/x and AT-FS238b/x Series Installation Guide

Importante: El Apéndice B contiene mensajes de seguridad traducidos para la instalación de este equipo. Cuando vea el símbolo Apéndice B para ver el mensaje de seguridad traducido a su idioma.

Obs! Bilaga B innehåller översatta säkerhetsmeddelanden avseende installationen av denna utrustning. När du ser för att läsa det översatta säkerhetsmeddelandet på ditt språk.

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, vaya al

, skall du gå till Bilaga B

Electrical Safety and Emission Compliance Statement ......................iii

Welcome to Allied Telesyn .......................................................................... ix

Where to Find Web-based Guides ................................................................... ix

Document Conventions .................................................................................... ix

Contacting Allied Telesyn Technical Support .................................................. x

Online Support ........................................................................................... x

Telephone Support ..................................................................................... x

Technical Support E-mail Addresses ........................................................ x

Returning Products .......................................................................................... xi

For Sales or Corporate Information ................................................................ xi

Tell Us What You Think .................................................................................. xi

Chapter 1

Overview .......................................................................................................... 1

External Power Supply .............................................................................. 4

Key Features ...................................................................................................... 5

Status LEDs ....................................................................................................... 6

Twisted Pair Port ............................................................................................... 7

Port Speed ................................................................................................... 7

Duplex Mode ............................................................................................... 7

Auto MDI/MDI-X ........................................................................................ 8

Fiber Optic Port ................................................................................................. 8

Port Speed ................................................................................................... 8

Duplex Mode ............................................................................................... 9

Mode Selection Button ...................................................................................... 9

Link Test ..................................................................................................... 9

MissingLink ................................................................................................ 9

Smart MissingLink .................................................................................. 10

Bridging Converter Performance .................................................................... 10

DIP Switches ............................................................................................ 11

MAC Address Table .................................................................................. 11

Store and Forward .................................................................................... 11

Network Topologies ......................................................................................... 12

vii

Table of Contents

Chapter 2

Installing the Bridging Converter ........................................................... 13

Verifying Package Contents ............................................................................ 13

Planning the Installation ................................................................................14

Selecting a Site .........................................................................................15

Installing the Bridging Converter ..................................................................16

Connecting a 12VDC Powered Unit ........................................................18

Wiring and Connecting a 12-50VDC Powered Unit ............................... 19

Warranty Registration .................................................................................... 23

Chapter 3

Troubleshooting ........................................................................................... 25

Appendix A

Technical Specifications ............................................................................ 27

Physical ............................................................................................................ 27

Environmental ................................................................................................. 27

Electrical Rating .............................................................................................. 27

Agency Certifications ....................................................................................... 28

Fiber Optic Port Specifications .......................................................................29

RJ-45 Pinout Assignments ..............................................................................30

Appendix B

Translated Safety and Emission Information .......................................33

viii

Welcome to Allied Telesyn

This guide contains instructions on how to install the AT-FS238a/x and AT-FS238b/x Series Bridging Converters.

Where to Find Web-based Guides

The Allied Telesyn web site at www.alliedtelesyn.com offers you an easy way to access the most recent documentation, software, and technical information for all of our products. For product guides, select “Support & Services” from our web site.

Document Conventions

This guide uses the following conventions:

Note

Notes provides additional information.

Caution

Cautions indicate that performing or omitting a specific action may result in equipment damage or loss of data.

Warning

Warnings indicates that performing or omitting a specific action may result in bodily injury.

Welcome to Allied Telesyn

Contacting Allied Telesyn Technical Support

You can contact Allied Telesyn technical support online or by telephone, or e-mail.

Online Support

You can request technical support online by accessing the Knowledge Base 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) 6381-5612

Australia

Tel: 1 (800) 000-880

France

Belgium, Luxembourg, The Netherlands, Middle East, Africa Tel: (+33) 0-1-60-92-15-25

Germany

Switzerland, Austria, Eastern Europe Tel: (+49) 30-435-900-126

Italy

Spain, Portugal, Greece, Turkey, Israel Tel: (+39) 02-41-30-41

Japan

Tel: (+81) 3-3443-5640

United Kingdom

Denmark, Norway, Sweden, Finland, Iceland Tel: (+0044) 1235-442500

Technical Support E-mail Addresses

Latin America, Mexico, Puerto Rico, Caribbean, and Virgin Islands

latin_america@alliedtelesyn.com

United Kingdom, Sweden, Norway, Denmark, and Finland

europe_support@alliedtelesyn.com

AT-FS238a/x and AT-FS238b/x Series Installation Guide

Returning Products

Products for return or repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to Allied Telesyn without a RMA number will be returned to the sender at the sender’s expense.

To obtain an RMA number, contact Allied Telesyn’s Technical Support at one of the following locations:

North America

Toll-free: 1-800-762-1664 Fax: 1-425-806-1050

Latin America, the Caribbean, Virgin Islands

Tel: international code + 425-481-3852 Fax: international code + 425-481-3895

Mexico

Toll-free: 1-800-424-5012, ext 3852 Fax: international code + 425-481-3895

Australia

Toll-free: 1-800-000-880 Fax: + 61-2-9438-4966

Europe, Africa, and the Middle East

Tel: +44-1793-501401 Fax: +44-1793-431099

Asia and Southeast Asia

Tel: +65-6381-5612 Fax: +65-6383-3830

Puerto Rico

Toll-free: 1-800-424-5012, ext 3852 or 1-800-424-4284, ext 3852

New Zealand

Toll-free: 0800-45-5782 Fax: +65-383-3830

For Sales or Corporate Information

You can contact Allied Telesyn for sales or corporate information at the location below:

Allied Teleyn, Inc.

19800 North Creek Parkway, Suite 200 Bothell, WA 98011 Tel: 1 (425) 487-8880 Fax: 1 (425) 489-9191

Tell Us What You Think

If you have any comments or suggestions on how we might improve this or other Allied Telesyn documents, please fill out the General Enquiry Form online. This form can be accessed by selecting “Contact Us” from www.alliedtelesyn.com.

Chapter 1 Overview

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters are the 10/100Mbps fast switch single-mode fiber transceivers which can send and receive on two different wavelengths (1310nm and 1550nm) on a single-mode fiber cable.

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters include the following models:

❑ AT-FS238a/1 ❑ AT-FS238b/1

❑ AT-FS238a/2 ❑ AT-FS238b/2

Below is how to differentiate between the models mentioned above:

❑ AT-FS238a/1 = (1310TX/1550RX) - 15 km range

❑ AT-FS238b/1 = (1550TX/1310RX) - 15 km range

❑ AT-FS238a/2 = (1310TX/1550RX) - 40 km range

❑ AT-FS238b/2 = (1550TX/1310RX) - 40 km range

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters are designed to extend the distance of your network by converting Fast Ethernet data between twisted pair cabling and single-mode fiber optic cabling. These dualport bridging converters can also be used to improve the performance of your network by dividing it into smaller, more manageable segments.

Each bridging converter features a 100Base-FX fiber optic port and a 10BaseT/100Base-TX twisted pair port.The fiber optic port has a simplex SC (Subscriber Connector) connector and an operating distance of 15 kilometers (9.4 miles) or 40 kilometers (24.8 miles), depending on the model. The twisted pair port has an RJ-45 connector with a maximum operating distance of 100 meters (328 feet).

Overview

The fiber optic port operates at 100 Mbps, while the twisted pair port operates at 10 Mbps or 100 Mbps. Both ports feature half- and full-duplex operation.

AT-FS238a/x and AT-FS238b/x Series Bridging Converters can be installed on a desktop or in an AT-MCR12 chassis. These bridging converters are easy to install and do not require software configuration or management.

Note

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters are designed to be used in pairs; therefore, the AT-FS238a/x fiber port must be connected to the AT-FS238b/x fiber port only.

Figure 1 illustrates the front panel of the AT-FS238a/x Series Bridging Converter.

Figure 1 AT-FS238a/x Series Front Panel (AT-FS238a/1 Model)

Figure 2 illustrates the front panel of the AT-FS238b/x Series Bridging Converter.

Figure 2 AT-FS238b/x Series Front Panel (AT-FS238b/1 Model)

AT-FS238a/x and AT-FS238b/x Series Installation Guide

The back panel of the AT-FS238a/x and AT-FS238b/x Series Bridging Converters features a receptacle power connector and DIP switches for manually configuring the ports.

Note

The AT-FS238a/x and AT-FS238b/x Bridging Converters are designed with 2 different receptacle connectors: 12VDC only or 12-50VDC version models.

Figure 3 illustrates the back panel of the AT-FS238a/x or the AT-FS238b/x Series Bridging Converters with 3-prong receptacle connector for the 12VDC version model.

DIP Switches

12VDC Receptacle Connector

DC Polarity Symbols

Figure 3 Back Panel of the AT-FS238a/x and AT-FS238b/x Series Bridging Converters

(12VDC Receptacle Connector)

Figure 4 illustrates the back panel of the AT-FS238a/x and the AT-FS238b/x Series Bridging Converters with the 3-prong receptacle connector for the 12-50VDC version model.

DIP Switches

12-50VDC 3-Prong Receptacle Connector

DC Polarity Symbols

Figure 4 Back Panel of the AT-FS238a/x and AT-FS238b/x Series Bridging Converters

(12-50VDC 3-Prong Receptacle Connector)

Overview

Table 1 lists the maximum operating distances for the bridging converters.

Table 1 Maximum Operating Distances

100Base-FX 10Base-T/100Base-TX

Model

Connector

Maximum Operating

Distance

Connector

Maximum Operating

Distance

AT-FS238a/1

SC 15 km (9.3 mi) RJ-45 100 m (328 ft)

AT-FS238b/1

AT-FS238a/2

SC 40 km (24.8 mi) RJ-45 100 m (328 ft)

AT-FS238b/2

1. Maximum distance for 100 Mbps optical datalinks is dependent on the following factors: type of optical fiber,

duplex mode of both end-nodes, and maximum optical loss budget for each of the optical fiber at the operating optical wavelength.

2. Maximum distance can only be obtained when the UTP/STP cabling is installed and verified to TIA/EIA 568A

Commercial Building Telecommunications Cabling Standard.

External Power Supply

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters are designed with either the 12VDC or the 12-50VDC receptacle power connector.

Any of the following power sources can be used with the AT-FS238a/x or AT-FS238b/x Series Bridging converter.

❑ An AC/DC power adapter - used specifically with the 12VDC-rated

version model

❑ An AT-PWR237 power adapter (12V or 15V output) - used with the

12-50VDC-rated version model. This power adapter must be used with the power connector provided, shown in Figure 5 on page 5.

❑ A regulated power supply (SELV power source per IEC 60950) - rated

minimum 12-50VDC 0.5A - used specifically with the 12-50VDC-rated version model. This power supply must be used with the power connector provided, shown in Figure 5 on page 5.

Note

Use only power sources that are UL Listed (QQGQ or EPBU), TUV Licensed, or other Safety Agencies approved, suitable for country of use.

AT-FS238a/x and AT-FS238b/x Series Installation Guide

Figure 5 illustrates the power connector provided with the unit.

Figure 5 Power Connector for the 12-50VDC Version Converter

Key Features

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters have the following features:

❑ LEDs for unit and port status

❑ Auto MDI/MDI-X

❑ Mode selection button that toggles between Link Test, MissingLink

and Smart MissingLink

❑ DIP switches for configuring the ports

❑ Half- or full-duplex operation on both ports

❑ RJ-45 twisted pair connector

❑ SC fiber optic connector

❑ Data packet forwarding and filtering at full wire speed (10 Mbps to

100 Mbps, and 100 Mbps to 100 Mbps)

❑ Store and forward switching mode

❑ Automatic address learning and aging

❑ IEEE 802.3u compliant auto-negotiation

❑ External power adapter (depending on the model)

❑ For use on a desktop or in an AT-MCR12 chassis



Overview

Status LEDs

Table 2 defines the LEDs for the bridging converters.

Table 2 Status LEDs

LED Color Description

PWR Green Power is applied to the unit.

AUTO NEG Green

OFF

100M Green

OFF

LNK Green

Blinking

FD/COL Green

OFF

Blinking

Mode Status

ML Green MissingLink is enabled.

SML Green Smart MissingLink is enabled.

LT Green Link Test is enabled.

Auto-negotiation on the twisted pair port is enabled.

Auto-negotiation on the twisted pair port is disabled.

The twisted pair port is operating at 100 Mbps.

The twisted pair port is operating at 10 Mbps.

A valid link has been established on the port.

Data is being received or transmitted on the port.

The bridging converter is operating in full-duplex mode.

The bridging converter is operating in half-duplex mode.

A collision has been detected on the port.

AT-FS238a/x and AT-FS238b/x Series Installation Guide

Twisted Pair Port

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters have one 10Base-T/100Base-TX twisted pair port. The twisted pair port features a RJ-45 connector.

Port Speed

The twisted pair port is compliant with the 10Base-T and 100Base-TX standards and is capable of either 10 Mbps or 100 Mbps operation. You can set the port speed manually or, since the port is IEEE 802.3u auto-negotiation compliant, you can allow the bridging converter to set the port speed automatically. With auto-negotiation, the speed of the port is set automatically by the bridging converter after it determines the speed of the end-node connected to the port. Auto-negotiation is designed to ensure that the port on the bridging converter and the end-node are operating at the same speed and that they are communicating at the highest possible common speed of the devices.

Duplex Mode

Duplex mode refers to how an end-node receives and transmits data. If an end-node can receive or transmit data, but not both simultaneously, the endnode is operating in what is referred to as half-duplex mode. If an end-node can both receive and transmit data simultaneously, the end-node is said to be operating in full-duplex mode. Naturally, an end-node capable of operating in full-duplex can handle data much faster than an end-node that can only operate in half-duplex mode.

The twisted pair ports on the AT-FS238a/x and AT-FS238b/x Series Bridging Converter can operate in either half-or full-duplex mode. They are IEEE

802.3u-compliant and use Auto-Negotiation to set the duplex mode setting for you automatically.

For Auto-Negotiation to operate properly on a bridging converter, the endnodes connected to the converter should also use Auto-Negotiation. If an endnode does not have this feature and has a fixed duplex mode of full-duplex, the result will be a duplex mode mismatch between the end-node and a converter port. A port on the bridging converter connected to an end-node with a fixed duplex mode of full-duplex will operate at only half-duplex. This results in the end node using full-duplex and the switch port using half-duplex. This can produce network performance problems. Should you encounter this situation, you must configure the port on the end-node to use Auto-Negotiation or, if it lacks that feature, to half-duplex.

Overview

Auto MDI/MDI-X

An RJ-45 twisted pair port on a 10 Mbps or 100 Mbps Ethernet network device can have one of two possible wiring configurations: MDI or MDI-X. The RJ-45 port on a PC, router, or bridge is typically wired as MDI, while the twisted pair port on a bridging converter or hub is usually MDI-X.

To connect two 10 Mbps or 100 Mbps network devices together that have dissimilar port wiring configurations, such as MDI to MDI-X, you would usually use a straight-through twisted pair cable. To connect two network devices that have the same wiring configuration, such as MDI to MDI, you would usually use a crossover cable.

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters feature automatic MDI/MDI-X. The RJ-45 port automatically determines the configuration of the port on the device to which it is connected and then configures itself appropriately. For example, if a port on a bridging converter is connected to a port on a bridge, which is typically wired as MDI, the port on the bridging converter automatically configures itself as MDI-X. This feature allows you to use either crossover cables or straight-through cable when connecting a device to the twisted pair port.

Fiber Optic Port

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters have one 100Base-FX fiber optic port. The single-mode fiber optic port features a simplex SC connector.

Port Speed

The fiber optic port is compliant with the 100Base-FX standard and has a fixed operating speed of 100 Mbps. The end-node connected to the fiber optic port on the bridging converter must also be able to operate at 100 Mbps. The AT-FS238a/x and AT-FS238b/x Series Bridging Converters can send and receive on the two different wavelengths (1310nm and 1550nm). The different wavelengths used by these bridging converters are as follow:

❑ AT-FS238a/x - TX=1310 and RX=1550

❑ AT-FS238b/x - TX=1550 and RX=1310

Note

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters are designed to be used in pairs; therefore, the AT-FS238a/x fiber must be connected to the AT-FS238b/x fiber only.

AT-FS238a/x and AT-FS238b/x Series Installation Guide

Duplex Mode

The fiber optic port on the bridging converter can operate in half- or fullduplex mode. You must set the duplex mode manually using the DIP switches on the back of the unit.

Mode Selection Button

Link Test

The link test is a fast and easy way for you to test the connections between the bridging converter ports and the end-nodes that are connected to the ports. If a network problem occurs, you can perform a link test to determine which port is experiencing a problem, and be able to focus your troubleshooting efforts on the cable and end-node where the problem resides.

A link test is performed when the Mode Selection button is toggled until the LNK LED is green.

Note

Performing a link test does not interfere with a bridging converter’s ability to pass network traffic.

MissingLink

The MissingLink feature enables the fiber optic ports on the bridging converter to pass the “Link” status of their connections to each other. When the bridging converter detects a problem with one of the ports, such as the loss of connection to an end-node, the bridging converter shuts down the connection to the other port, thus notifying the end-node that the connection has been lost.

For example, if the network twisted pair cable to the 10Base-T/100Base-TX port on the bridging converter were to fail, the unit would respond by dropping the link on the 100Base-FX fiber optic port. In this way, the bridging converter notifies the end-node connected to the fiber optic port that the connection on the twisted pair port has been lost. If the failure had started with the fiber optic cabling, the unit would drop the link to the twisted pair port.

The value to this type of network monitoring and fault notification is that some devices can be configured to take a specific action in the event of the loss of connection on a port. In some cases, the unit can be configured to seek a redundant path to a disconnected end-node or send out a trap to a network management station, and so alert the network administrator of the problem.

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