Allied Telesis AT-FS705L User manual

AT-FS705L
Fast Ethernet Switch
Installation Guide
PN 613-50326-00 Rev C

Copyright © 2002 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.
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.

iii
Electrical Safety and Emission Compliance
Statements
Standards: This product meets the following standards:
U.S. Federal Communications Commission
Declaration Of Conformity
Manufacture Name: Allied Telesyn, Inc.
Manufacture Address: 960 Stewart Drive, Suite B
Sunnyvale, CA 94085 USA
Manufacture Telephone: [phone]
Declares that the product: Fast Ethernet Switch
Model Numbers: AT-FS705L
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.
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.

Electrical Safety and Emission Compliance Statements
iv
RFI Emission EN55022 Class B !1
Immunity EN55024
!2
Electrical Safety EN60950 (TUV), UL60950 (cULus) !3
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.
Vigtigt: Tillæg B indeholder oversatte sikkerhedsadvarsler, der vedrører
installation af dette udstyr. Når De ser symbolet !, skal De slå op i tillæg
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 !ziet, raadpleeg
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 !-symbolin, katso käännettyä turvaohjetta
liitteestä B.
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.
Viktig: Tillegg B inneholder oversatt sikkerhetsinformasjon for installering
av dette utstyret. Når du ser !, åpner du til Tillegg B for å finne den
oversatte sikkerhetsinformasjonen på ønsket språk.
Importante: O Anexo B contém advertências de segurança traduzidas para
instalar este equipamento. Quando vir o símbolo !, leia a advertência de
segurança traduzida no seu idioma no Anexo B.
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.
Obs! Bilaga B innehåller översatta säkerhetsmeddelanden avseende
installationen av denna utrustning. När du ser !, skall du gå till Bilaga B
för att läsa det översatta säkerhetsmeddelandet på ditt språk.

v
Table of Contents
Electrical Safety and Emission Compliance Statements .....................iii
Welcome to Allied Telesyn ..........................................................................vii
Where to Find Web-based Guides ...................................................................vii
Documentation Conventions............................................................................vii
Contacting Allied Teleysn Technical Support................................................viii
Online Support.........................................................................................viii
Telephone Support ...................................................................................viii
E-mail Support.........................................................................................viii
Returning Products ...........................................................................................ix
FTP Server.........................................................................................................ix
For Sales or Corporate Information .................................................................ix
Tell Us What You Think ....................................................................................x
Chapter 1
Overview...........................................................................................................1
Features ..............................................................................................................2
Status LEDs........................................................................................................2
Twisted Pair Ports..............................................................................................3
Port Speed....................................................................................................3
Duplex Mode................................................................................................3
Auto MDI/MDI-X.........................................................................................4
MAC Address Table............................................................................................4
Store and Forward..............................................................................................5
Network Topologies............................................................................................6
Standalone...................................................................................................6
Cascade........................................................................................................7
Uplink ..........................................................................................................8

vi
Chapter 2
Installation .......................................................................................................9
Verifying the Package Contents ........................................................................9
Planning the Installation.................................................................................10
Selecting a Site..........................................................................................10
Reviewing Safety Guidelines....................................................................11
Installing the Switch on a Desktop..................................................................12
Wall-Mounting the Switch...............................................................................13
Warranty Registration .....................................................................................13
Chapter 3
Troubleshooting ............................................................................................15
Appendix A
Technical Specifications .............................................................................17
Physical.............................................................................................................17
Environmental..................................................................................................17
Electrical Rating...............................................................................................17
Agency Compliance...........................................................................................18
Pinout Assignments..........................................................................................18
Appendix B
Translated Safety and Emission Information........................................19

vii
This guide contains instructions on how to install and configure the
AT-FS705L Fast Ethernet Switch.
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.
Documentation Conventions
This guide uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions indicate that performing or omitting a specific action may
result in equipment damage or loss of data.
Warning
Warnings indicate that performing or omitting a specific action may
result in bodily injury.
Welcome to Allied Telesyn

Welcome to Allied Telesyn
viii
Contacting Allied Teleysn 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 phone, contact Allied Telesyn at one of the following
locations:
E-mail Support
Latin America, Mexico, Puerto Rico, Caribbean, and Virgin Islands
[e-mail]
Europe
[e-mail]
Americas
United States, Canada, Mexico,
Central America, South America
Tel: [phone]
Germany
Germany, Switzerland, Austria,
Eastern Europe
Tel: [phone]
Asia
Singapore, Taiwan, Thailand,
Malaysia, Indonesia, Korea,
Philippines, China,
India, Hong Kong
Tel: [phone]
Italy
Italy, Spain, Portugal, Greece, Turkey,
Israel
Tel: [phone]
Australia
Tel: [phone] Japan Tel: [phone]
France
France, Belgium, Luxembourg,
The Netherlands, Middle East, Africa
Tel: [phone]
United Kingdom
United Kingdom, Denmark, Norway,
Sweden, Finland
Tel: [phone]

AT-FS705L Switch Installation Guide
ix
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:
FTP Server
If you need management software for an Allied Telesyn managed device and
you know the file name of the software, you can download the software by
connecting directly to our FTP server at ftp.alliedtelesyn.com. At login,
enter ‘anonymous’ as the user name and your e-mail address for the password.
For Sales or Corporate Information
You can contact Allied Telesyn for sales or corporate information at the
location below:
Allied Telesyn, Inc.
19800 North Creek Parkway, Suite 200
Bothell, WA 98011
Tel: [phone]
Fax: [phone]
North America
Toll-free: 1-800-762-1664
Fax: [phone]
Europe, Africa, and the Middle
East
Tel: [phone]
Fax: [phone]
Latin America, the Caribbean, and
Virgin Islands
Tel: international code + 425-481-3852
Fax: international code + 425-481-3895
Puerto Rico
Tel: [phone], ext 3852 or
1-800-424-4284, ext 3852
Mexico
Toll-free: 800-424-5012, ext 3852
Fax: international code + 425-481-3895
Asia and Southeast Asia
Tel: [phone]
Fax: [phone]
Australia
Toll-free: 1-800-000-880
Fax: [phone]
New Zealand
Toll-free: 0800-45-5782

Welcome to Allied Telesyn
x
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.

1
Chapter 1
Overview
The AT-FS705L is an unmanaged Layer 2 switch. This switch can be used in a
variety of network configurations and topologies. You can use the switch to
create small workgroups with dedicated 10 Mbps and 100 Mbps links to your
network devices, such as workstations, servers, printers, and routers. You can
also use the switch to interconnect Ethernet hubs to provide a bridge between
the different workgroups of your network. Finally, you can connect the
switches to other Ethernet switches so that they can be part of a larger
Ethernet network.
The AT-FS705L switch features five 10Base-T/100Base-TX twisted pair ports.
Each twisted pair port has an RJ-45 connector with a maximum operating
distance of 100 meters (328 feet). The twisted pair port can operate at 10 Mbps
or 100 Mbps and in half- or full-duplex mode.
The AT-FS705L switch can be used on a desktop or mounted on a wall. The
switch is easy to install and does not require software configuration or
management.
Figure 1 illustrates the front and back panels of the AT-FS705L switch.
Figure 1 AT-FS705L Switch Front and Back Panels

Overview
2
Features
❑LEDs for unit and port status
❑Auto MDI/MDI-X on the twisted pair ports
❑Half- or full-duplex operation on both ports
❑Five RJ-45 twisted pair connectors
❑Store and forward switching mode
❑MAC address table with a capacity of 2,000 addresses
❑Small compact size for use on a desktop or wall-mountable
Status LEDs
Table 1 defines the LEDs for the switch.
Table 1 Status LEDs
LED Color Description
POWER Green Power is applied to the switch.
LINK/ACT Green
Blinking
A valid link has been established on the port.
Data is being received or transmitted on the port.
100M Green
OFF
The port is operating at 100 Mbps.
The port is operating at 10 Mbps.
FDX Green
OFF
The port is operating in full-duplex mode.
The port is operating in half-duplex mode.

AT-FS705L Switch Installation Guide
3
Twisted Pair Ports
The AT-FS705L switch has five 10Base-T/100Base-TX twisted pair ports.
Each twisted pair port features a RJ-45 connector. The maximum operating
distance for the twisted pair ports is 100 meters (328 feet) when operating at
either 10 Mbps or 100 Mbps.
Port Speed
The twisted pair ports are compliant with the 10Base-T and 100Base-TX
standards and are capable of either 10 Mbps or 100 Mbps operation. Since the
ports are IEEE 802.3u auto-negotiation compliant, the switch will set the port
speed automatically. With auto-negotiation, the speed of the ports are set
automatically by the switch after it determines the speed of the end-node
connected to the port. Auto-negotiation is designed to ensure that the port on
the switch 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 the way an end-node sends and receives data on the
network. An end-node can operated in either half- or full-duplex mode
depending on its capabilities. An end-node that is operating in half-duplex
mode can either send data or receive data, but it cannot do both at the same
time. An end-node that is operating in full-duplex mode can send and receive
data simultaneously. The best network performance is achieved when an end-
node can operate at full-duplex, since the end-node is able to send and receive
data simultaneously.
The twisted pair ports on the AT-FS705L switch can operate in either half-
duplex or full-duplex mode. The switch sets the duplex mode automatically
through auto-negotiation. With auto-negotiation, if the end-node is capable of
full-duplex, the port is set automatically to full-duplex mode. If the end-node
is capable of half-duplex, the port is set automatically to half-duplex mode.

Overview
4
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. A
RJ-45 port on a PC, router, orbridge is typically wired as MDI, while a twisted
pair port on a switch or hubs is usually MDI-X.
To connect two 10 Mbps or 100 Mbps network devices together that have
dissimilar port wiring configurations, such as an MDI to MDI-X, you would
use a straight-through twisted pair cable. To connect two networks devices
that have the same wiring configuration, such as MDI to MDI, you would use
a crossover cable.
The AT-FS705L switch features automatic MDI/MDI-X. The RJ-45 port
automatically determines the configurations of the port on the device to which
it is connected and then configures itself appropriately. For example, if a port
on a switch is connected to a port on a bridge, which is typically wired as MDI,
the port on the switch automatically configures itself as MDI-X. This feature
allows you to use either a crossover cable or a straight-through cable when
connecting a device to a twisted pair port.
MAC Address Table
The heart of an Ethernet switch is the Media Access Control (MAC) address
table. Every device that you attach to an Ethernet network has a MAC
address. This address is assigned to the device by the device’s manufacturer.
For example, each Network Interface Card (NIC) that you install into your
network computers has a MAC address that was assigned to it by the card’s
manufacturer.
A switch’s MAC address table is a list of the MAC addresses of the devices
that are connected to its ports. The switch uses this table to direct data frames
to their appropriate destination end-nodes, and in some cases, to discard
frames that it receives. The switch creates the MAC address table by
examining the frames that it receives on its ports. Each frame is examined for
its source address; that is, the MAC address of the end-node that sent the
frame. The switch checks to determine whether the address is already in its
MAC address table. If it is not, the switch adds the address to the table along
with the port number on which the frame was received. The result is a table
that contains a list of all the MAC addresses of end-nodes that have sent
frames to the switch and the ports on the switch to which the end-nodes are
connected.

AT-FS705L Switch Installation Guide
5
The switch also checks the destination MAC address of each frame it receives.
The destination address is the MAC address of the end-node to which the
frame is intended. If the address is in the table, the switch directs the frame
directly to the port where the end-node is located. This helps to ensure that
end-nodes will only receive traffic that is intended for them and not have to
deal with traffic intended for other end-nodes.
If the destination address is not in the MAC address table, the switch
broadcasts the frame to all switch ports. When the destination end-node
responds, the switch will be able to match the address to a port so that the
next time a frame is destined to that particular end-node, the switch will be
able to forward the frame to the correct port instead of having to broadcast the
frame to all ports.
In some cases a switch will even discard a frame. If the switch receives a
frame that is destined to an end-node on the same port on which the frame
was received, the switch discards the frame.
The MAC address table in the AT-FS705L switch can store up to 2,000 MAC
addresses. To prevent the table from becoming filled with addresses of end-
nodes that are no longer active, the switch has a MAC address aging timer.
This timer will delete a MAC address from the table if it does not see a frame
from the end-node with the address on any port after five minutes (300
seconds). The aging timer also helps to ensure that the table is correct should
an end-node be moved from one port on the switch to another port.
Store and Forward
The AT-FS705Lswitch supportsstore and forward switching at FastEthernet
full-wire speed. Packets entering each port are stored in buffers. Once the full
packet is received, the switch will forward or discard the packet, depending on
its destination address and error status. This ensures that only error-free
packets destined for another segment will be transferred across the switch,
reducing network load. For example, if the packet entering from Port 1 is
destined for an end-node on Port 2, the switch forwards the frame if the frame
does not contain any errors. If the packet from Port 1 is destined for an end-
node also connected to Port 1, the packet is discarded.

Overview
6
Network Topologies
The AT-FS705L switch can be used in three different topologies: standalone,
cascade, and uplink. Each topology is describe below.
Standalone
A standalone topology uses one switch to connect the end-nodes. Figure 2
illustrates a standalone topology that uses an AT-FS705L switch to connect
several workstations and a server.
Figure 2 Standalone Topology

AT-FS705L Switch Installation Guide
7
Cascade
Figure 3 illustrates two AT-FS705L switches connected together to support
multiple network segments. This is commonly referred to as ‘cascading.’
Figure 3 Cascading Topology

Overview
8
Uplink
Figure 4 illustrates multiple AT-FS705L switches can be interconnected using
uplinks from a centralized backbone Fast Ethernet switch.
Figure 4 Uplink Topology
Hub
Hub
Hub
SNMP Station
Sales Department
Engineering Department
Finance Department
IS Department
Fast Ethernet Switch
10 Mbps
100 Mbps
10 Mbps

9
Chapter 2
Installation
This chapter contains the installation instructions for the AT-FS705L switch.
This switch can be used on a desktop or mounted on a wall.
Verifying the Package Contents
Make sure the following items are included in your package. If any item is
missing or damaged, contact your Allied Telesyn sales representative for
assistance.
❑One AT-FS705L Fast Ethernet Switch
❑Four protective feet (for desktop use only)
❑Power cord
❑This installation guide
❑Warranty card

Installation
10
Planning the Installation
Be sure to observe the following guidelines when planning the installation of
your switch.
❑The end-nodes connected to the twisted pair ports can operate at 10
Mbps or 100 Mbps and half or full-duplex. The switch uses auto-
negotiation to determine the correct speed and duplex mode for each
port.
❑The twisted pair port cabling must be kept away from sources of
electrical noise, such as radios, transmitters, power lines, broadband
amplifiers electrical motors, and fluorescent fixtures.
❑Refer to Table 2 for the cabling specifications for the twisted pair
ports.
Table 2 10Base-T/100Base-TX Twisted Pair Port Cabling Specifications
Selecting a Site
Be sure to observe the following requirements when choosing a site for your
switch.
❑Select a site that is dust-free and moisture-free.
❑Be sure that the site will allow you to easily access the twisted pair
cables and the power cord.
❑Use a dedicated power circuit or a power conditioner to supply reliable
power to the device.
Operating
Mode Twisted Pair Cable Maximum Operating Distance
10Base-T Shielded or Unshielded Category 3 or better 100 m (328 ft)
100Base-TX Shielded or Unshielded Category 5 or better 100 m (328 ft)