Allied Telesis AT-3726 User Manual
INSTALLATION GUIDE
Ethernet
Centre
Fast
Ethernet
COM
AT-3714F AT-3726 Switch
Fiber
®
ATM
PN 613-10708-00 Rev. B
Copyright 1998 Allied Telesyn International, Corp.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International,
Corp.
Centre Com is a registered trademark of Allied Telesyn International, Corp.
All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their
respective owners.
Allied Telesyn International, Corp. 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 International, Corp. 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 International,
Corp. has been advised of, known, or should have known, the possibility of such damages.
Electrical Safety and Installation
Requirements for AT-3726
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 EN55022 Class A
Immunity EN50082-1
IMPORTANT : This equipment must be operated in accordance with safety precautions. To see any safety warnings in this guide in
multiple languages, refer to Appendix A, Translated Safety Information, at the page number indicated by the icon.
WICHTIG : Für den Betrieb dieses Gerätes ist die Einhaltung von Sicherheitsvorkehrungen erforderlich. Wenn Sie
eine der Sicherheitswarnungen dieser Anleitung in mehrsprachiger Übersetzung lesen möchten, finden Sie diese in
Anhang A, "Übersetzte Sicherheitsinformationen", unter der Seitennummer , auf die mit dem Symbol verwiesen
wird. (German)
VIGTIGT : Dette udstyr skal bruges i overensstemmelse med sikkerhedsadvarslerne. Sikkerhedsadvarslerne i denne
flersprogede håndbog kan findes i tillæg A oversatte sikkerhedsinformationer på det sidenummer, der er angivet ved
-symbolet. (Danish)
BELANGRIJK : Dit apparaat moet in overeenstemming met de veiligheidsvoorschriften worden gebruikt. Om
veiligheidswaarschuwingen in deze handleiding in meerdere talen te zien, refereren aan Aanhangsel A, Vertaalde
veiligheidsinformatie, op de door het symbool aangegeven pagina. (Dutch)
IMPORTANT : Cet équipement doit être utilisé conformément aux instructions de sécurité. Pour consulter les
avertissements en diverses langues dans ce guide, reportez-vous à l’annexe A, « Traductions des informations de
sécurité », qui figure à la page signalée par l’icône . (French)
TÄRKEÄÄ : Tätä laitetta on käytettävä turvaohjeiden mukaisesti. Tässä ohjeessa olevat turvallisuusvaroitukset
löytyvät useammalla kielellä liitteen A "Käännetyt turvaohjeet" sivulta, joka on merkitty -kuvakkeella.
(Finnish)
IMPORTANTE : questa apparecchiatura deve essere utilizzata rispettando le norme di sicurezza. Per le avvertenze
di sicurezza in più lingue contenute in questa guida, consultare l'Appendice A, Informazioni sulla sicurezza tradotte
alla pagina indicata dall'icona . (Italian)
VIKTIG : Dette utstyret skal brukes i samsvar med sikkerhetsregler. Du kan se all sikkerhetsinformasjonen i denne
veiledningen på flere språk ved å slå opp i Tillegg A i heftet "Oversatt sikkerhetsinformasjon" på sidetallet angitt av
symbolet . (Norwegian)
iii
Electrical Safety and Installation Requirements for AT-3726
IMPORTANTE : Este equipamento tem que ser operado segundo as medidas de precaução de segurança. Para ver
qualquer dos avisos contidos neste guia em vários idiomas, consultar o Anexo A, da Informação de Segurança
Traduzido no número de página indicado pelo ícone . (Portuguese)
IMPORTANTE : La operación de este equipo debe llevarse a cabo cumpliendo con las precauciones de seguridad.
Para ver cualquier advertencia de seguridad de esta guía en múltiples idiomas, consulte el Apéndice A, Información
traducida de seguridad en la página cuyo número indica el icono . (Spanish)
OBS ! Alla nödvändiga försiktighetsåtgärder måste vidtas när denna utrustning används. För flerspråkiga
säkerhetsvarningar i denna handledning hänvisas du till den sida som följer efter ikonen i Bilaga A, Översatt
säkerhetsinformation. (Swedish)
iv
Electrical Safety and Installation
Requirements for AT-3714F
STANDARDS : This product meets the following standards.
Declaration Of Conformity
Manufacturers Name: Allied Teleysn International, Corp.
Manufacturers Address: 950 Kifer Road
Manufacturers Telephone: 408-730-0950
Declares that the product: Fiber Ethernet Switch
Model Number: AT-3714F
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.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15 of the 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 encourage 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 94086 USA
Canadian Department of Communications
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.
RFI Emission EN55022 Class B
Immunity EN50082-1
IMPORTANT : This equipment must be operated in accordance with safety precautions. To see any safety warnings in this guide in
multiple languages, refer to Appendix A, Translated Safety Information, at the page number indicated by the icon.
WICHTIG : Für den Betrieb dieses Gerätes ist die Einhaltung von Sicherheitsvorkehrungen erforderlich. Wenn Sie
eine der Sicherheitswarnungen dieser Anleitung in mehrsprachiger Übersetzung lesen möchten, finden Sie diese in
Anhang A, "Übersetzte Sicherheitsinformationen", unter der Seitennummer , auf die mit dem Symbol verwiesen
wird. (German)
VIGTIGT : Dette udstyr skal bruges i overensstemmelse med sikkerhedsadvarslerne. Sikkerhedsadvarslerne i denne
flersprogede håndbog kan findes i tillæg A oversatte sikkerhedsinformationer på det sidenummer, der er angivet ved
-symbolet. (Danish)
BELANGRIJK : Dit apparaat moet in overeenstemming met de veiligheidsvoorschriften worden gebruikt. Om
veiligheidswaarschuwingen in deze handleiding in meerdere talen te zien, refereren aan Aanhangsel A, Vertaalde
veiligheidsinformatie, op de door het symbool aangegeven pagina. (Dutch)
IMPORTANT : Cet équipement doit être utilisé conformément aux instructions de sécurité. Pour consulter les
avertissements en diverses langues dans ce guide, reportez-vous à l’annexe A, « Traductions des informations de
sécurité », qui figure à la page signalée par l’icône . (French)
v
Electrical Safety and Installation Requirements for AT-3714F
TÄRKEÄÄ : Tätä laitetta on käytettävä turvaohjeiden mukaisesti. Tässä ohjeessa olevat turvallisuusvaroitukset
löytyvät useammalla kielellä liitteen A "Käännetyt turvaohjeet" sivulta, joka on merkitty -kuvakkeella.
(Finnish)
IMPORTANTE : questa apparecchiatura deve essere utilizzata rispettando le norme di sicurezza. Per le avvertenze
di sicurezza in più lingue contenute in questa guida, consultare l'Appendice A, Informazioni sulla sicurezza tradotte
alla pagina indicata dall'icona . (Italian)
VIKTIG : Dette utstyret skal brukes i samsvar med sikkerhetsregler. Du kan se all sikkerhetsinformasjonen i denne
veiledningen på flere språk ved å slå opp i Tillegg A i heftet "Oversatt sikkerhetsinformasjon" på sidetallet angitt av
symbolet . (Norwegian)
IMPORTANTE
qualquer dos avisos contidos neste guia em vários idiomas, consultar o Anexo A, da Informação de Segurança
Traduzido no número de página indicado pelo ícone . (Portuguese)
IMPORTANTE : La operación de este equipo debe llevarse a cabo cumpliendo con las precauciones de seguridad.
Para ver cualquier advertencia de seguridad de esta guía en múltiples idiomas, consulte el Apéndice A, Información
traducida de seguridad en la página cuyo número indica el icono . (Spanish)
OBS ! Alla nödvändiga försiktighetsåtgärder måste vidtas när denna utrustning används. För flerspråkiga
säkerhetsvarningar i denna handledning hänvisas du till den sida som följer efter ikonen i Bilaga A, Översatt
säkerhetsinformation. (Swedish)
: Este equipamento tem que ser operado segundo as medidas de precaução de segurança. Para ver
vi
Table of Contents
Electrical Safety and Installation Requirements for AT-3726 ....................................................... iii
Electrical Safety and Installation Requirements for AT-3714F ...................................................... v
Preface .......................................................................................................................................... Preface-i
Purpose of This Guide ...........................................................................................................................................................................Preface-i
How This Guide is Organized ..............................................................................................................................................................Preface-i
Document Conventions ......................................................................................................................................................................Preface-ii
Where to Find Related AT-3714F, AT-3726 Guides ...................................................................................................................Preface-iii
Chapter 1
AT-3714F, AT-3726 Hardware Description ..................................................................................... 1-1
Physical Description ..........................................................................................................................................................................................1-2
Hardware Features ............................................................................................................................................................................................1-2
Network Management Features ...................................................................................................................................................................1-3
MAC Addressing .................................................................................................................................................................................................1-3
Store and Forward/Cut-Through (fragment-free) Modes ..........................................................................................................1-3
Transmit Pacing ..................................................................................................................................................................................................1-4
Mirror Port ....................................................................................................................................................................................................1-4
10/100BaseTX/FX Media Dependent Adapter ...............................................................................................................................1-5
RS232 Connector .......................................................................................................................................................................................1-5
Reset Button ................................................................................................................................................................................................1-5
AC Power Connector ................................................................................................................................................................................1-5
Chapter 2
Installing the Switch ...........................................................................................................................2-1
Verifying Switch Package Contents .............................................................................................................................................................2-1
Safety Information .............................................................................................................................................................................................2-2
Preparing the Site ..............................................................................................................................................................................................2-3
Rack Mounting the Unit ...................................................................................................................................................................................2-4
Setting Up Terminal for Local Management Using Omega .......................................................................................................2-7
Switch Default Settings ...........................................................................................................................................................................2-8
Media Dependent Adapters ...........................................................................................................................................................................2-9
Verifying Package Contents ..................................................................................................................................................................2-9
Media Dependent Adapter Features .................................................................................................................................................2-9
Installing a Media Dependent Adapter ...........................................................................................................................................2-10
MDA LEDs ...................................................................................................................................................................................................2-11
vii
Table of Contents
Chapter 3
Troubleshooting .................................................................................................................................. 3-1
At the First Sign of a Problem ........................................................................................................................................................................3-1
Network Cabling Problems .............................................................................................................................................................................3-2
Calling Technical Support .......................................................................................................................................................................3-2
How the Switch Reports Problems ..............................................................................................................................................................3-3
PORT ACTIVITY LED on any Port is Off ................................................................................................................................................3-4
PORT ACTIVITY LED on any Port is OFF ..............................................................................................................................................3-4
POWER LED is Off .......................................................................................................................................................................................3-4
FAULT LED is On .........................................................................................................................................................................................3-5
Chapter 4
Switch Configurations ........................................................................................................................ 4-1
Standalone Switch Configuration ................................................................................................................................................................4-1
Workgroup Switch Configuration ................................................................................................................................................................4-3
Appendix A
Translated Safety Information ......................................................................................................... A-1
Appendix B
Technical Specifications ................................................................................................................... B-1
Media Dependent Adapter Cabling Distances ........................................................................................................................................B-2
viii
Preface
.
Purpose of This Guide
This guide is written for installers and network administrators who
are responsible for installing and maintaining the switch
How This Guide is Organized
This guide consists of the following sections:
Chapter 1, Hardware Description, describes the features and
functions of the switch.
Chapter 2, Installing the AT-3714F and AT-3726 Switch, describes the
procedures for installing the switch.
Chapter 3, Troubleshooting, describes how to troubleshoot the
switch.
Chapter 4, S witch Configur ation, presents topological illustrations for
the switch.
Appendix A, Tr anslated Safety Warnings, contains all of the translated
safety warnings documented throughout this guide.
Appendix B, Technical Specifications, presents in tabular form the
switch specifications.
At the end of this guide is an Index listing index entries according to
subject matter.
Preface-i
Preface
Document Conventions
The conventions used in this guide are as follows:
Note
A note provides additional information.
Warning
A warning indicates that performing or omitting a specific action may
result in bodily injury.
Caution
A caution indicates that performing or omitting a specific action may
result to equipment damage or loss of data.
ii-Preface
√
√
√
√
√
AT-3714F and AT-3726 Installation Guide
Where to Find Related AT-3714F, AT-3726 Guides
Allied Telesyn wants our customers to be well informed by providing
the most up-to-date and most easily accessible way to find our
guides and other technical information by visiting our website at:
www.alliedtelesyn.com/manuals.htm
.
√
AT-3726, AT-3714F Documentation
AT-3714F, AT-3726 Installation Guide,
613-10708-00
AT-3701, AT-3701F/SC Quick Install Guide,
613-10669-00 (shipped with product)
AT-3714F Quick Install Guide,
613-10707-00 (shipped with product)
AT-3714F Translated Safety Information Booklet,
613-10717-00 (shipped with product)
AT-S20 User’s Guide, 613-10716-00
AT-3726 Quick Install Guide,
613-10668-00 (shipped with product)
AT-3726 Translated Safety Information Booklet,
613-10673-00 (shipped with product)
Web-
based
Printed
√
Preface-iii
Chapter 1
AT-3714F, AT-3726 Hardware Description
The AT-3714F switch provides 12 Ethernet 10Base-FL ports and one
built-in 100Base-FX port. The AT-3726 switch is a standalone,
managed Ethernet switch that provides 24 10Base-T ports and one
built-in 10/100Base-TX port. Both switches include a 100Base-X slot
that can be configured with an optional 10/100Base-TX or
100Base-FX port.
The switches are intended for connections to the desktop as well as
workgroup applications and implement direct high-speed server
and backbone connections. Full duplex capability on all ports
eliminates collisions and provides up to 20 Mbps on the 10Base ports
and up to 200 Mbps of bandwidth on the 100Base ports to servers,
routers, and other switches. With built-in management, this switch
provides seamless management capability such as SNMP.
A T-3726
CentreCOM
PORT B 100BASE-TX MIRROR PORT RS-232
3701
100BASE-TX
X
1X 3X 5X 7X 9X 11X 13X 15X 17X 19X 21X 23X
2XA4X6X8X10X 12X 14X 16X 18X 20X 22X 24X
10BASE-T PORT ACTIVITY
LINK LINK
ACTIVITY
1357911131517192123
2AB 4 6 8 10 12 14 16 18 20 22 24
X
A T-3714F
10BASE-FL ETHERNET SWITCH
with FAST ETHERNET 100BASE ACCESS
MDA
B
3701
100BASE-TX
X
100BASE-FX MIRROR PORT RS-232
TX RX
1357911
A
TX RX TX RX TX RX TX RX TX RX TX RX
24681012
10BASE-FL
PORT ACTIVITY
LINK LINK
ACTIVITY
1357911
2AB 4 6 8 10 12
X
TERMINAL PORT
TERMINAL PORT
STATUS
FAULT
RESET
POWER
STATUS
FAULT
RESET
POWER
Figure 1-1 AT-3726 and AT-3714F Switches
1-1
AT-3714F, AT-3726 Hardware Description
Physical Description
The switches have the following major front panel components:
❑
❑
❑
❑
❑
24 Ethernet 10Base-T RJ45 ports with one 10/100Base-TX port
(Fast ethernet) (AT-3726); 12 10Base-FL ports (SC or ST) with
one 100Base-FX (fiber SC) port (AT-3714F)
Optional Media Dependent Adapter (MDA)--100Base-X port
can be configured either with 10/100Base-TX (RJ45) or
100Base-FX port (fiber SC)
Port Mirroring (Port M) 10Base-T RJ45
RS232 (DB9) connector (out-of-band/Local Omega)
Reset button
Hardware Features
❑
System and port status LEDs
The switches have the following major hardware features:
❑
Full duplex capability on all ports eliminates collisions and
provides up to 20 Mbps on the 10Base ports and up to 200
Mbps of bandwidth on the 100Base ports to servers, routers,
and other switches
❑
Auto-negotiation on all 10BaseT and 10/100BaseTX ports in
compliance with IEEE 802.3u
❑
Port mirroring
❑
Non-blocking, clear-channel architecture delivers wire-speed
switching and up to 880 Mbps aggregate bandwidth for
exceptional performance (AT-3726); 640Mbps for AT-3714F
1-2
❑
Shared memory architecture with 1M of packet buffers per
ASIC chip (two ASICs for AT-3726; one ASIC for AT-3714F)
❑
Store-and-forward and Cut-through (fragment-free)
switching modes
❑
Stores up to 1954 MAC addresses
❑
In-band Telnet capability for switch management
❑
Out-of-band capability with RS232 connector for switch
management
❑
Flash memory for convenient upgrades
Network Management Features
The following lists the switch’s major network management features.
❑ SNMP Management Information Base (MIB) II, SNMP MIB
extensions, Bridging MIB (RFC 1493), and Telnet support
deliver comprehensive in-band management
❑ Local Omega, a menu-based management console, provides
detailed out-of-band management
AT-3714F and AT-3726 Installation Guide
MAC Addressing
Store and
Forward/
Cut-Through
(fragment-free)
Modes
❑ IEEE 802.1d Spanning Tree Protocol support for redundant
backbone connections and loop-free networks simplifies
configuration and improves fault tolerance
The switch has hardware base support with External Address Lookup
Engine (EALE) for static entries and self-learning of active MAC
addresses. The switch can support up to 1954 MAC addresses.
With store and forward or cut-through (fragment-free) switching
modes, network administrators can optimize performance and
enable full-error checking.
The store and forward mode (default), works in the following way.
First, as the packet is being received, it is placed in a buffer and held
there until the entire packet is received. The packet is also being
checked for errors and is not forwarded unless the entire packet is
error-free. This mode is automatic when data is exchanged between
10Base and 100Base ports.
1-3
AT-3714F, AT-3726 Hardware Description
With the Cut-through (fragment-free) method, the switch starts to
forward the incoming packet to its destination while the packet is
still being received. Cut-through (fragment-free) provides low
latency for forwarding frames and also filtering fragment frames by
not transmitting a frame until 64 bytes have been received by the
switch. In Cut-through (fragment-free) mode, fragment frames or
runts and short frames (frames less than 64 bytes) are filtered, thus
preventing error frames from propagating throughout the network
causing congestion.
Select the Cut-through (fragment-free) method if you are running
time-sensitive applications because it provides lower latency
through the switch.
Transmit Pacing
Transmit pacing is enabled on a per port basis. When transmit pacing
is enabled, the switch alters its transmission routine during heavy
network activity. When the switch senses heavy traffic, it alters its
transmission routing by intentionally inserting additional delay
between transmission attempts. This added delay reduces collision
rates, thus reducing the number of transmission attempts, which
helps reduce CPU utilization, lightens overall network traffic, and
allows the network time to normalize before attempting
transmission.
1-4
If this additional delay is not applied, the switch attempts to transmit
on an overloaded network, increasing the number of unsuccessful
transmission attempts.
For detailed information concerning software and management
features, see the “AT- S20 User’s Guide” located on Allied Telesyn’s
website at alliedtelesyn.com/manuals.htm.
Mirror Port The switch has a dedicated Mirror port. Administrators can use the
Omega software to configure the Mirror port and modes. The Mirror
port can monitor traffic on any 10Mbps port, but only one port at a
time. An extended LANalyzer or an RMON probe can be connected
to the port mirroring connector using a standard Category 3 UTP
cable.
In full duplex mode the user needs to determine if they want to
monitor TX or only RX data, but in only one direction at a time. In half
duplex mode, both RX/TX can be monitored simultaneously.
AT-3714F and AT-3726 Installation Guide
10/100BaseTX/
FX Media
Dependent
Adapter
The MDA’s LEDs, one for Activity and the other for Link status, are
located on the switch’s front panel under Port Activity. Table 1-1 lists
the features of the MDAs. For details concerning how to install an
MDA, see Chapter 2, Installing a Media Dependent Adapter.
Table 1-1 Media Dependent Adapter Features
Adapter
AT-3701 UTP 10/100Base-TX RJ45
AT-3701F/SC Fiber SC 100Base-FX: multimode SC fiber
Supported
Cable
Description
Ethernet port: auto-negotiated speed
and duplex mode
10/100Base-T max. segment length:
330’ (100m), Category 5 UTP
connector
100Base Ethernet port
100Base-FX: max. segment length
1.25 miles (2 km for full duplex, 412 M for
half duplex)
micron multimode fiber
; 50/125 and 62.5/125
RS232
Connector
The RS232 connector provides out-of-band management via a
VT-100 terminal or MS-Windows’ VTERM terminal emulation using a
straight-through cable.
Reset Button This recessed button can be activated using the tip of a ball point
pen to run power-on self test.
AC Power
Connector
The switch has a single power supply, which has autoswitch AC
inputs. The input voltage range is from 120-240 VAC, 50/60 Hz.
1-5
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