Fast Ethernet
Switch
AT-FS716L
AT-FS724L
Installation Guide
613-001151 Rev. B
Copyright © 2009 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Allied Telesis, Alliedware Plus and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. All other product names, company
names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesis, 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 Telesis, 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 Telesis, Inc. has been advised of, known, or should have known, the possibility of
such damages.
Electrical Safety and Emissions 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 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 complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
RFI Emissions FCC Class A, EN55022 Class A, CISPR Class A, CE
Warning: In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
EMC (Immunity) EN55024
Electrical Safety EN60950-1 (TUV), UL 60950-1 (
CULUS
), CSA (CUL
Canada
), CD Mark
3
Translated Safety Statements
Important: The indicates that a translation of the safety statement is available in a PDF
document titled “Translated Safety Statements” (613-000990) posted on the Allied Telesis website at
www.alliedtelesis.com. This document is also included with the documentation CD that is shipped
with the product.
4
Contents
Preface ..................................................................................................................................................................................6
Safety Symbols Used in this Document..................................................................................................................................7
Where to Find Web-based Guides .........................................................................................................................................8
Contacting Allied Telesis ........................................................................................................................................................9
Online Support ................................................................................................................................................................9
Email and Telephone Support .........................................................................................................................................9
Returning Products..........................................................................................................................................................9
For Sales or Corporate Information.................................................................................................................................9
Warranty..........................................................................................................................................................................9
Management Software Updates ......................................................................................................................................9
Chapter 1: Product Description ........................................................................................................................................10
Overview...............................................................................................................................................................................11
Key Features ........................................................................................................................................................................12
Standards .............................................................................................................................................................................12
Hardware Feature Description..............................................................................................................................................13
ecoFriendly Power Saving Functions ............................................................................................................................13
Twisted-Pair Ports .........................................................................................................................................................14
System and Port LEDs ..................................................................................................................................................15
High Efficiency Internal Power Supply...........................................................................................................................16
A Few Ethernet Switching Basics.........................................................................................................................................17
MAC Address Table ......................................................................................................................................................17
Duplex Mode .................................................................................................................................................................18
Store and Forward.........................................................................................................................................................18
Backpressure and Flow Control ....................................................................................................................................18
Network Topologies..............................................................................................................................................................20
Power Workgroup Topology ..........................................................................................................................................20
Cascade Topology ...............................................................................................................
.........................................21
Chapter 2: Installation .......................................................................................................................................................22
Reviewing Safety Precautions..............................................................................................................................................23
Selecting a Site for the Switch..............................................................................................................................................26
Planning the Installation .......................................................................................................................................................27
Unpacking the Switch ...........................................................................................................................................................28
Installing the Switch on a Table or Desktop..........................................................................................................................29
Installing the Switch in a Rack ..............................................................................................................................................30
Wall-Mounting the Switch .....................................................................................................................................................32
Connecting the Ports and Powering On the Switch..............................................................................................................36
Chapter 3: Troubleshooting ..............................................................................................................................................38
Appendix A: Technical Specifications .............................................................................................................................39
Physical Specifications .........................................................................................................................................................39
Environmental Specifications................................................................................................................................................39
Power Specifications ............................................................................................................................................................39
Safety and Electromagnetic Emissions Certifications...........................................................................................................40
Compliance Standards .........................................................................................................................................................40
RJ-45 Twisted-Pair Port Connectors ....................................................................................................................................40
5
Preface
This guide provides the hardware installation instructions for you to install
the AT-FS716L or AT-FS724L Fast Ethernet switch. This preface contains
the following sections:
“Safety Symbols Used in this Document” on page 7
“Where to Find Web-based Guides” on page 8
“Contacting Allied Telesis” on page 9
6
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-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
7
Preface
Where to Find Web-based Guides
The installation and user guides for all Allied Telesis products are
available in portable document format (PDF) on our web site at
www.alliedtelesis.com. You can view the documents online or download
them onto a local workstation or server.
8
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Contacting Allied Telesis
This section provides Allied Telesis contact information for technical
support as well as sales or corporate information.
Online Support You can request technical support online by accessing the Allied Telesis
Knowledge Base from the following web site:
www.alliedtelesis.com/support. 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
Returning
Products
For Sales or
Corporate
For Technical Support via email or telephone, refer to the Allied Telesis
web site: www.alliedtelesis.com. Select your country from the list
displayed on the website. Then select the appropriate menu tab.
Products for return or repair must first be assigned a Return Materials
Authorization (RMA) number. A product sent to Allied Telesis without a
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact the Allied Telesis Technical Support
group at our web site: www.alliedtelesis.com/support/rma. Select your
country from the list displayed on the website. Then select the appropriate
menu tab.
You can contact Allied Telesis for sales or corporate information at our
web site: www.alliedtelesis.com. Select your country from the list
displayed on the website. Then select the appropriate menu tab.
Information
Warranty For warranty information on both the AT-FS716L & AT-FS724L
Unmanaged Fast Ethernet Switches, go to www.alliedtelesis.com/
warranty for the specific terms and conditions and for warranty
registration.
Management
Software Updates
New releases of management software for our managed products are
available from either of the following Internet sites:
Allied Telesis web site: www.alliedtelesis.com
Allied Telesis FTP server: ftp://ftp.alliedtelesis.com
If you prefer to download new software from the Allied Telesis 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.
9
Chapter 1
Product Description
This chapter contains the follows sections:
“Overview” on page 11
“Key Features” on page 12
“Standards” on page 12
“Hardware Feature Description” on page 13
“A Few Ethernet Switching Basics” on page 17
“Network Topologies” on page 20
10
Overview
100-240VAC~
100-240VAC~
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
The AT-FS716L and AT-FS724L Fast Ethernet Switches provide simple,
energy efficient, and cost-effective solutions for switching 10 Mbps and
100 Mbps network traffic.
The AT-FS716L and AT-FS724L switches feature 16 and 24
10/100Base-TX twisted-pair ports respectively. Each port has an RJ-45
connector and a maximum operating distance of 100m and is capable of
Auto-Negotiating speeds of 10 or 100 Mbps at half/full-duplex operation.
Both the AT-FS716L and AT-FS724L Fast Ethernet switches can be used
on a desktop, mounted to a wall or in a rack and feature high efficiency,
low power consumption internal power supplies. These switches are easy
to install and do not require any software configuration or management.
Figure 1 and 2 illustrate the front and rear panels of these switches.
24 Port Unmanaged Fast Ethernet Switch
POWER
AT-FS724L
1 3 5 7 9 11131517192123
24
6 8 10 12 14 16 18 20 22 24
16
Port Unmanaged Fast Ethernet Switch
POWER
FDX HDX
10 LINK
100 LINK
91113151357
10 12 14 162468
ACT
ACT
Figure 1. AT-FS724L Front and Rear Panels
AT-FS716L
13579111315
2 4 6 8 10 12 14 16
13579111315
2 4 6 8 10 12 14 16
100 LINK
10 LINK
ACT
FDX HDX
ACT
COL
17 19 21 23
18 20 22 24
COL
1540
1527
Figure 2. AT-FS716L Front and Rear Panels
11
Chapter 1: Product Description
Key Features
The AT-FS716L and AT-FS724L Fast Ethernet switches have the
following key features:
16 each RJ-45 10/100Base-TX ports on the AT-FS716L Switch
24 each RJ-45 10/100Base-TX ports on the AT-FS724L Switch
ecoFriendly power saving features including:
– Auto-power saving mode on a per-port basis when link
is down
– Auto-adjusts port power output based on cable length
when link is up
– Low power mode LED ecoFriendly push button
– Highly efficient internal Power supply
Quiet, “fanless” operation
Standards
Auto MDI/MDI-X on all ports
Auto-Negotiation on all ports (IEEE 802.3u-compliant)
Store and forward switching mode
Backpressure and flow control (IEEE 802.3x-compliant)
BPDU packet pass through support
EAPOL packet pass through support
Storage for up to 8K MAC addresses
MAC address aging time of 200 to 300 seconds
Non-blocking full wire speed
System and port LEDs
For use on a desktop, wallmount, or rackmount
RoHS and China RoHS compliant
The AT-FS716L and AT-FS724L Fast Ethernet switches support the
following standards:
IEEE 802.3 – 10BASE-T standard
IEEE 802.3u – 100BASE-TX standard with Auto-negotiation
IEEE 802.3x – Flow Control, Symmetric and Asymmetric
IEEE 802.3z - Full Duplex
12
Hardware Feature Description
The hardware features of the AT-FS716L and AT-FS724L Fast Ethernet
switches are described in the following sections:
“ecoFriendly Power Saving Functions”
“Twisted-Pair Ports” on page 14
“System and Port LEDs” on page 15
“High Efficiency Internal Power Supply” on page 16
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
ecoFriendly
Power Saving
Functions
The AT-FS716L and AT-FS724L implement the following power saving
features.
Cable Length Power Savings
This feature automatically allows the port to use the minimum amount of
power required to commnicate with its end node based on the cable
length. When an individual port’s link status is UP, the length of the cable
connected to the port is automatically detected and the power needed out
of the port is adjusted accordingly to minimize power consumption. More
power will be used by a port when a longer cable is installed than for a
shorter cable.
Link Down Power Savings
Approximately ten seconds after a port’s link status changes to DOWN,
the port will enter into a link down power savings mode. While in this
mode, the port will monitor the receive pair for detection of incoming
signals such as link pulses and fast link pulses. Once a signal is detected,
the port will “wake up” and establish the proper link while resuming normal
operation.
13
Chapter 1: Product Description
Note
POW
LED ecoFriendly Push Button
The LED ecoFriendly push button is located next to the Power LED on the
left-hand side of the front panel as illustrated in Figure 3. It enables the
LED Low Power Mode (LPM) feature. This mode allows you to conserve
power by turning off the port status LEDs when you do not required the
LED status indications on the front panel. To toggle the LEDs on or off,
press the ecoFriendly button. The LPM feature does not affect the the
Power LED or the network operations of the switch ports.
Figure 3. LED ecoFriendly Push Button
Twisted-Pair
Ports
Type of Connector
The twisted-pair ports feature 8-pin RJ-45 connectors. (For the port
pinouts, refer to “RJ-45 Twisted-Pair Port Connectors” on page 40.
Speed
The ports are 10Base-T and 100Base-T compliant and are capable of
10 megabits per second (Mbps) and 100 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 endnode is capable of only 10 Mbps, the switch sets the port connected to the
end-node to 10 Mbps.
Duplex Mode
Each twisted-pair port on these switches can operate in either half- or full
duplex mode. The twisted-pair ports are IEEE 802.3u-compliant and will
Auto-Negotiate the duplex mode setting.
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 18.
14
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Maximum Distance
Each twisted-pair port has a maximum operating distance of 100 m
(328 feet).
Type of Cabling
For 10 Mbps operation, Category 3 or better 100 ohm shielded or
unshielded twisted-pair cabling is required. For 100 Mbps operation,
Category 5 and Enhanced Category 5 (5E) 100 ohm shielded or
unshielded twisted-pair cabling is required.
Auto MDI/MDI-X
All of the twisted-pair ports on these switches are auto-MDI and IEEE
802.3ab-compatible. When a port's speed and duplex mode are set
through Auto-Negotiation, the port uses the auto-MDI feature to
automatically configure itself as MDI or MDI-X when connected to an endnode. Consequently, you can use either a straight-through or crossover
twisted-pair cable when connecting any network device to a port.
System and Port
LEDs
The system and port LEDs on the front panel of the AT-FS724L switch
display the switch and its port status information. Each port has two LEDs.
Table 1 describes the system and twisted-pair port LEDs on the ATFS716L and AT-FS724L Fast Ethernet switches.
Table 1. System and Port LEDs
LED State Description
POWER Green The switch is powered ON and
operating normally.
OFF The switch has no power.
Green The port is establishing a valid link at
100 Mbps.
Blinking Green The port is receiving/transmitting data
at 100 Mbps.
L/A
Amber The port is establishing a valid link at
10 Mbps.
Blinking Amber The port is receiving/transmitting data
at 10 Mbps.
OFF There is no valid link on the port.
15
Chapter 1: Product Description
Note
Table 1. System and Port LEDs
LED State Description
Green The port is establishing at full-duplex
mode.
DPX
Blinking Green Collisions are present on the port.
OFF The port is establishing at half-duplex
mode.
High Efficiency
Internal Power
Supply
The AT-FS716L and AT-FS724L Fast Ethernet Switches are both
designed for low power consumption while operating. They use internal,
high efficiency, universal switching power supplies operating from
100 ~ 240V AC at 50/60 Hz.
The AT-FS716L switch has a maximum power consumption of 4.6 Watts
when the LED ecoFriendly switch is ON and all 16 ports are loaded with
100 MB of network traffic on 100m cables.
The AT-FS724L switch has a maximum power consumption of 6.7 Watts
with the LED ecoFriendly switch ON and all 24 ports loaded with 100
Mbps of network traffic on 100m cables.
This maximum power consumption information was measured when
the switchs’ AC input voltage was 240 VAC @ 50 Hz.
16
A Few Ethernet Switching Basics
An Ethernet switch interconnects network devices, such as workstations,
printers, routers, and other Ethernet switches, so that they can
communicate with each other by sending and receiving Ethernet frames.
This is done with the following features:
“MAC Address Table”
“Duplex Mode” on page 18
“Store and Forward” on page 18
“Backpressure and Flow Control” on page 18
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
MAC Address
Table
Every hardware device on your network has a unique MAC address. This
address is assigned to the device by the device’s manufacturer. For
example, when you install a Network Interface Card (NIC) in a computer
the NIC already has a MAC address assigned to it by its manufacturer.
Both the AT-FS716L and the AT-FS724L Fast Ethernet switches can
contain up to 8,000 entries on its MAC address table. Each switch uses
the table to store the MAC addresses of the network end nodes connected
to the ports, along with the port number on which each address was
learned.
A switch learns the MAC addresses of the end-nodes by examining the
source address of each packet received on a port. It adds the address and
port on which the packet was received to the MAC table if the address had
not already been entered in the table. The result is that a table contains all
the MAC addresses of the devices that are connected to the switch’s
ports, and the port number where each address was learned.
When the switch receives a packet, it also examines the destination
address and, by referring to its MAC address table, determines the port on
which the destination end-node is connected. Then it forwards the packet
to the appropriate port and on to the end-node. This increases network
bandwidth by limiting each frame to the appropriate port where the
intended end-node is located, freeing the other switch ports for receiving
and transmitting data.
If the switch receives a packet with a destination address that is not in the
MAC address table, it floods the packet to all the ports on the switch.
If the switch receives a packet with a destination address that is on the
same port on which the packet was received, it discards the packet without
forwarding it on to another port. Since both the source end-node and the
destination end-node for the packet are located on the same port on the
switch, there is no reason for the switch to forward the packet.
17
Chapter 1: Product Description
Note
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, it is
operating in a half-duplex mode. If an end-node can 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 halfduplex mode.
The twisted-pair ports on the AT-716L and AT-FS724L Fast Ethernet
switches 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 switch, the end-nodes
connected to the switch should also use Auto-Negotiation. If an endnode does not have this feature and has a fixed duplex mode of fullduplex, the result will be a duplex mode mismatch between the endnode and a switch port. A port on the switch connected to an endnode with a fixed duplex mode of full-duplex will operate at only halfduplex. 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.
Store and
Forward
Backpressure and
Flow Control
Both switches use store and forward as the method for receiving and
transmitting frames. When a Ethernet frame is received on a switch port,
the switch does not retransmit the frame out the destination port until it has
received the entire frame and stored the frame in a port buffer. Then it
examines the frame to determine if it is a valid frame. Invalid frames, such
as fragments or runts, are discarded by the switch. This insures that only
valid frames are transmitted out the switch ports and that damaged frames
are not propagated on your network.
To maintain the orderly movement of data between the end-nodes, an
Ethernet switch may periodically need to signal an end-node to stop
sending data. This can occur under several circumstances. For example, if
two end-nodes are operating at different speeds, the switch, while
transferring data between the end-nodes, might need to instruct the faster
end-node to stop transmitting data allowing the slower end-node to catch
up. An example of this would be when a server operating at 100 Mbps is
sending data to a workstation operating at only 10 Mbps.
18
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
How a switch signals an end-node to stop transmitting data differs
depending on the duplex mode of the end-node and switch port. A
twisted-pair port operating in half-duplex mode stops an end-node from
transmitting data by forcing a collision. A collision on an Ethernet network
occurs when two end-nodes attempt to transmit data using the same data
link at the same time. A collision causes an end-node to stop sending data,
wait for a brief period of time, and then retransmit the same data. Once the
switch is ready to receive data again, the switch stops forcing collisions.
This is referred to as backpressure.
A port operating in full-duplex mode uses PAUSE frames, as specified in
the IEEE 802.3x standard, to stop the transmission of data from an endnode. Whenever the switch wants an end-node to stop transmitting data, it
issues this frame. The frame instructs the end-node to cease transmission
for a period of time specified within the frame. The switch continues to
issue PAUSE frames until it is ready again to receive data from the endnode. This is referred to as flow control.
19
Chapter 1: Product Description
Network Topologies
This section illustrates two network topologies that you can create with
either the AT-FS716L or the AT-FS724L Fast Ethernet switch in the
following sections. Both the power workgroup and cascade topologies are
described.
Power
Workgroup
Topology
The topology shown in Figure 4 is commonly referred to as a power
workgroup topology. In this configuration, each workstation, or end-node
is connected directly to a port on the switch. Each end-node has a
dedicated data link to the switch for best performance and reliability. The
devices can operate at either 10 Mbps or 100 Mbps.
10 LINK
ACT
ACT
FDX HDX
COL
1539
10 Mbps
100 Mbps
16
Port Unmanaged Fast Ethernet Switch
13579111315
POWER
2 4 6 8 10 12 14 16
AT-FS716L
13579111315
2 4 6 8 10 12 14 16
100 LINK
Figure 4. Power Workgroup Topology
20
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Cascade
Topology
Connecting two similar networking devices together is called “cascading.”
Figure 5 illustrates this topology where Port 19 on the AT-FS724L switch is
connected to Port 16 on the AT-FS716 switch. Since the ports are
configured as auto MDI/MDI-X, a crossover or straight-through Category 5
or better twisted-pair cable can be used in any of the ports.
FDX HDX
10 LINK
24 Port Unmanaged Fast Ethernet Switch
AT-FS724L
1 3 5 7 9 11131517192123
16
Port Unmanaged Fast Ethernet Switch
13579111315
POWER
2 4 6 8 10 12 14 16
AT-FS716L
100 LINK
13579111315
2 4 6 8 10 12 14 16
100 LINK
ACT
ACT
10 LINK
ACT
91113151357
COL
ACT
FDX HDX
COL
17 19 21 23
POWER
10 Mbps
100 Mbps
24
6 8 10 12 14 16 18 20 22 24
10 12 14 162468
Figure 5. Cascade Topology
18 20 22 24
1538
21
Chapter 2
Installation
This chapter contains the following sections:
“Reviewing Safety Precautions” on page 23
“Selecting a Site for the Switch” on page 26
“Planning the Installation” on page 27
“Unpacking the Switch” on page 28
“Installing the Switch on a Table or Desktop” on page 29
“Installing the Switch in a Rack” on page 30
“Wall-Mounting the Switch” on page 32
“Connecting the Ports and Powering On the Switch” on page 36
22
Reviewing Safety Precautions
Note
Warning
Warning
Warning
Warning
Warning
Please review the following safety precautions before you begin to install
the switch or any of its components.
The indicates that a translation of the safety statement is
available in a PDF document titled “Translated Safety Statements”
(613-000990) posted on the Allied Telesis website at
www.alliedtelesis.com. This document is also included with the CD
that is shipped with the product.
To prevent electric shock, do not remove the cover. No userserviceable parts inside. This unit contains hazardous voltages and
should only be opened by a trained and qualified technician. To
avoid the possibility of electric shock, disconnect electric power to
the product before connecting or disconnecting the LAN cables.
E1
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Do not work on equipment or cables during periods of lightning
activity. E2
To prevent electric shock, do not remove the cover. No userserviceable parts inside. This unit contains hazardous voltages and
should only be opened by a trained and qualified technician. To
avoid the possibility of electric shock, disconnect electric power to
the product before connecting/disconnecting the LAN cables. E3
Do not work on equipment or cables during periods of lightning
activity. E4
Power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord. E5
23
Chapter 2: Installation
Warning
Caution
Caution
Caution
Caution
Warning
Class I Equipment. This equipment must be earthed. The power
plug must be connected to a properly wired earth ground socket
outlet. An improperly wired socket outlet could place hazardous
voltages on accessible metal parts. E6
Pluggable Equipment: The socket outlet shall be installed near the
equipment and shall be easily accessible. E7
Air vents: Air vents must not be blocked and must have free access
to the room ambient air for cooling. E8
Operating Temperature: This product is designed for a maximum
ambient temperature of 40°C. E9
All Countries: Install this product in accordance with local and
National Electric Codes. E10
Circuit Overloading: Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern. E21
Mounting of the equipment in the rack should be such that a
hazardous condition is not created due to uneven mechanical
loading. E25
24
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Caution
Warning
If installed in a closed or multi-unit rack assembly, the operating
ambient temperature of the rack environment may be greater than
the room ambient temperature. Therefore, consideration should be
given to installing the equipment in an environment compatible with
the manufacturer’s maximum rated ambient temperature (Tmra).
E35
Installation of the equipment in a rack should be such that the
amount of air flow required for safe operation of the equipment is not
compromised. E36
Reliable earthing of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections other than
direct connections to the branch circuits (e.g., use of power strips).
E37
25
Chapter 2: Installation
Selecting a Site for the Switch
Observe the following requirements when choosing a site for the
AT-FS716L or AT-FS724L Fast Ethernet Switches:
If you plan to install the switch in an equipment rack, be sure that the
rack is safely secured and that it will not tip over. Devices in a rack
should be installed starting at the bottom, with the heavier devices
near the bottom of the rack.
If you are installing the switch on a table, be sure that the table is level
and secure.
The power outlet for the switch should be located near the unit and
should be easily accessible.
The site should provide for easy access to the ports on the front of the
switch. This will make it easy for you to connect and disconnect
cables, as well as view the switch’s LEDs.
To allow proper cooling of the switch, air flow around the unit and
through its vents on the side and rear should not be restricted.
Do not place objects on top of the switch.
Do not expose the switch to moisture or water.
Ensure that the site is a dust-free environment.
You should use dedicated power circuits or power conditioners to
supply reliable electrical power to the network devices.
26
Planning the Installation
Note
Be sure to observe the following guidelines when planning the installation
of your switch.
The end-nodes connected to the twisted-pair port can be operated at
either 10 Mbps or 100 Mbps and half- or full-duplex mode.
The end-node connected to a port on the switch can be a network
adapter card, repeater, router, hub, or another switch.
Table 2 contains the cabling specifications for the twisted-pair ports.
Speed Type of Cable
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Table 2. Ttwisted-pairwisted-pair Cabling and Distances
Maximum
Operating
Distance
10 Mbps Category 3 or better 100-ohm
100 m (328 ft)
shielded or unshielded twisted-pair
cable
100 Mbps Category 5 or Category 5E
100 m (328 ft)
(Enhanced) 100-ohm shielded or
unshielded twisted-pair cable
The twisted-pair ports on the switch feature Auto-MDI when
operating at either 10 or 100 Mbps. Each port is individually
configured as MDI or MDI-X when connected to an end-node.
Consequently, you can use either a straight-through or crossover
twisted-pair cable when connecting any network device to a
twisted-pairport on the switch. A port operating at 10 or 100 Mbps
uses two of the pairs in the twisted-pair twisted-pairwiring.
27
Chapter 2: Installation
Note
Unpacking the Switch
To unpack an AT-FS716L or an AT-FS724L switch, perform the following
procedure:
1. Remove all components from the shipping package.
2. Place the switch on a level, secure surface.
3. Ensure the following hardware components are included in your switch
Store the packaging material in a safe location. You must use the
original shipping material if you need to return the unit to Allied
Telesyn.
package. If any item is missing or damaged, contact your Allied
Telesis sales representative for assistance.
One AT-716L or AT-FS724L Fast Ethernet Switch
Four self-adhesive rubber feet
Wall mount kit
19” rack mounting kit
AC power cord
28
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Installing the Switch on a Table or Desktop
To install the switch on a table or desktop, perform the following
procedure:
1. Remove all the items from the packaging and store the packaging
material in a safe place. In the event a problem occurs and you need to
return the unit, please use as much of the original shipping material as
possible.
2. Attach the four self-adhesive rubber feet to the bottom of the switch, as
shown in Figure 6.
2 4 6 8 10 12 14 16
COL
FDX HDX
10 LINK ACT100 LINK ACT
13579111315
AT-FS716L
POWER
2 4 6 8 10 12 14 16
13579111315
Port Unmanaged Fast Ethernet Switch
1529
16
Figure 6. Attaching the Rubber Feet
3. Turn the switch over and place it on a flat and secure surface, leaving
ample space around the switch for ventilation.
4. The switch is now ready for cabling and powering up. Go to
“Connecting the Ports and Powering On the Switch” on page 36 to
connect your switch to the network.
29
Chapter 2: Installation
Installing the Switch in a Rack
Perform the following procedure to install either switch in a standard
19-inch rack. Two rack mounting brackets and eight mounting screws are
provided for attachment to your switch.
1. Remove any data cables and the power cord from the switch if they
are attached to the switch.
2. If attached, remove the rubber feet from the bottom of the chassis with
a flat bladed screw driver as shown in Figure 7.
Figure 7. Removing the Rubber Feet from Chassis
3. Attach the two mounting brackets (provided) to the sides of the switch
using the bracketmounting screws (provided), as shown in Figure 8.
24
P
ort Unm
anag
ed Fas
AT-
t
Eth
FS724L
ernet Switch
1 3
57
911
13 15 17 19 21
12 14 16 18 20
1
23
3
57
1
0
0
L
IN
22
24
2
4
K
9
AC
T
1
0
L
IN
K
11
A
C
T
13
F
D
X
H
D
X
15
C
O
6
8
10
L
12
17 19 21 23
14
16
1
8 20 22 24
1546
P
O
W
E
R
24
6 8
10
Figure 8. Attaching Brackets for Rackmounting
30
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Warning
1547
The chassis may be heavy and awkward to lift. Allied Telesis
recommends that you get assistance when mounting the chassis in
an equipment rack. 30
4. Mount the switch in the 19-inch rack using the rackmounting screws
(not provided), as shown in Figure 9.
17
19 21 23
1
8
20 22
24
Figure 9. Rackmounting the Switch
5. The switch is now ready for cabling and powering up. Go to
“Connecting the Ports and Powering On the Switch” on page 36 to
connect your switch to the network.
31
Chapter 2: Installation
Wall-Mounting the Switch
Either switch can be mounted horizontally on a wall using the wallmounting brackets that come with the unit. The wall-mounting screws and
plastic anchors necessary to mount the switch on a wall are provided.
To wall-mount the switch, perform the following procedure:
1. Remove any data cables and the power cord from the switch if they
are attached to the switch.
2. If attached, remove the rubber feet from the bottom of the chassis with
a flat bladed screw driver as shown in Figure 10.
Figure 10. Removing the Rubber Feet from Chassis
3. Select a wall location for the switch.
32
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
4. Install the two plastic anchors and two screws provided into the wall so
that they are level with each other. They should spaced 130.17mm (5
1/8 in) apart for the AT-FS716L or 200mm (7 7/8 in) apart for the ATFS724L as shown in Figure 11 and Figure 12.
130.17mm (5 1/8 in)
1553
Figure 11. Installing the Mounting Screws for AT-FS716L in the Wall
33
Chapter 2: Installation
200mm (7 7/8 in)
1554
Figure 12. Installing the Mounting Screws for AT-FS724L in the Wall
5. Mount the chassis on the wall by sliding the chassis over the mounting
screws You may mount the switch as shown in Figure 13 with the
ports pointing up or you may elect to mount the switch 180 degrees
from what is shown with the switch ports pointing down.
34
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
1533
AT-FS
716L
16
Port Unm
ana
ged F
ast Eth
ernet Switch
1
3 5
7
9
11 1
3
15
2
468 10 12 14 16
P
OWE
R
10 LINK
A
CT
100 LINK
ACT
FDX HDX
C
O
L
1 3 5791
1
1
3
1
5
2
468
10 12 14 16
Figure 13. Mounting the Switch on the Wall
6. The switch is now ready for cabling and powering up. Go to
“Connecting the Ports and Powering On the Switch” on page 36 to
connect your switch to the network.
35
Chapter 2: Installation
10 LINK
ACT
100 LINK
ACT
FDX HDX
COL
35791
11
3
1
5
810
12
14
16
1530
Connecting the Ports and Powering On the Switch
To connect to the ports on the switch, perform the following procedure:
1. Connect the twisted-pair data cables to the RJ-45 ports on the switch,
as shown in Figure 14.
Figure 14. Connecting the Twisted-twisted-pairPair Data Cables
When connecting a twisted-pair cable to a port, observe the following
guidelines:
An RJ-45 connector should fit snugly into the port on the switch.
The tab on the connector should lock the connector into place.
The ports on the switch are auto-MDI/MDI-X. You can use either a
straight-through or crossover twisted-pair cable to connect any
type of network device to a port on the switch.
The network should not contain data loops, which can adversely
affect network performance. A data loop exists when two or more
network devices can communicate with each other over more than
one data path.
36
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Warning
1535
100-240VAC~
2. Apply AC power to the switch by plugging the power cord into the AC
power connector on the back panel of the unit, as shown in
Figure 15.
Figure 15. Connecting the AC Power Connector to Switch
Power cord is used as a disconnection device: To de-energize
equipment, disconnect the power cord. 5
3. Plug the other end or the power cord into a wall outlet.
4. Verify that the POWER LED is green. If the LED is OFF, refer to
“Troubleshooting” on page 38.
The switch is ready for network operations.
37
Chapter 3
Note
Troubleshooting
This chapter contains information on how to troubleshoot the switch in the
event that a problem occurs.
If you are still unable to resolve the problem after following the
instructions in this chapter, contact ATI Technical Support for
assistance. Refer to “Contacting Allied Telesis” on page 9.
Check the POWER LED on the front of the switch. If the LED is OFF,
indicating that the unit is not receiving power, do the following:
Ensure that the power cord is securely connected to a power outlet and
that the other end of the power cord is securely connected to the back
of the switch.
Verify that the power outlet has power by connecting another device
to it.
Try connecting the unit to another power source.
Try using a different power cord.
Verify that the voltage from the power source is within the required
levels for your region.
Verify that the LNK/ACT LED for each port is ON. If a LNK/ACT LED is
OFF, do the following:
Verify that the ecoFriendly switch is OFF - switch is not depressed. If it
is ON (depressed), the LNK/ACT LEDs will not be ON or active.
Verify that the end-node connected to the port is powered ON and is
operating properly.
Verify that the twisted-pair cable is securely connected to the port on
the switch and to the port on the end-node.
Ensure that the twisted-pair cable does not exceed 100 meters (328
feet).
Verify that you are using the appropriate category of twisted-pair cable:
Category 3 or better for 10 Mbps operation and Category 5 and
Category 5E for 100 Mbps operation.
38
Appendix A
Technical Specifications
Physical Specifications
Dimensions: (W x D x H)
AT-FS716L 184 mm x 124 mm x 44 mm
AT-FS724L 280 mm x 180mm x 44 mm
Weight:
AT-FS716L .800 kg (1.76 lbs)
AT-FS724L 1.592 kg (3.51 lbs)
(7.24 in x 4.88 in x 1.73 in)
(11.02 in x 7.08 in x 1.73 in)
Environmental Specifications
Operating Temperature: 0° C to 40° C (32° F to 104° F)
Storage Temperature: -25° C to 70° C (-13° F to 158° F)
Operating Humidity: 5% to 90% non-condensing
Storage Humidity: 5% to 95% non-condensing
Operating Altitude Range: Up to 4,000m (13,000 feet)
Power Specifications
Maximum Power Consumption:
(AC side 240 VAC 50 Hz with 100m cables on all ports)
AT-FS716L with ecoFriendly switch ON 4.6 W @100Mbps
AT-FS724L with ecoFriendly switch ON 6.7 W @100Mbps
AC Input Electrical Ratings: 100~240V AC
Frequency: 50/60 Hz, 0.5A input
39
Appendix A: Technical Specifications
8
8
1
1
Safety and Electromagnetic Emissions Certifications
RFI Emissions FCC Class A, EN55022 Class A,
CISPR 22 Class A
Safety UL- USA, LVD (EN60950), CSA or
cUL - Canada, CE
Immunity EN55024
Electrical Safety UL 60950-1 (CULUS), EN60950 (TUV)
Compliance Standards
IEEE 802.3 – Ethernet
IEEE 802.3u – Fast Ethernet
IEEE 802.3x – Flow Control, Symmetric and Asymmetric
IEEE 802.3z - Full Duplex
RJ-45 Twisted-Pair Port Connectors
This section lists the connectors and connector pinouts for the AT-FS716L
and AT-FS724L Fast Ethernet Switches ports.
Figure 16 illustrates the pin layout to an RJ-45 connector and port.
Figure 16. RJ-45 Connector and Port Pin Layout
40
AT-FS716L & AT-FS724L Fast Ethernet Switch Installation Guide
Table 3 lists the RJ-45 pin signals when a twisted-pair port is operating in
the MDI configuration.
Table 3. MDI Pin Signals (10Base-T or 100Base-TX)
Pin Signal
1TX+
2TX-
3RX+
6RX-
Table 4 lists the RJ-45 port pin signals when a twisted-pair port is
operating in the MDI-X configuration.
Table 4. MDI-X Pin Signals (10Base-T or 100Base-TX)
Pin Signal
1RX+
2RX-
3TX+
6TX-
41
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