D-Link DGS-1016D - Switch User manual

D-Link ™ DGS-1016D
DGS-1024D
16/24-Port 10/100/1000Mbps
Gigabit Ethernet Switch
Manual
Building Networks for People
RECYCLABLE
(November 2005)
P/N: 6DGS1024D.02G

D-Link DGS-1016D/DGS-1024D Unmanaged Gigabit Ethernet Switch
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Information in this document is subject to change without notice.
© 2005 D-Link Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation
is strictly forbidden.
Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Computer
Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the
marks and names or their products. D-Link Computer Corporation disclaims any proprietary interest in
trademarks and trade names other than its own.
FCC Warning
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 user’s guide,
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.
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause radio interference in which
case the user may be required to take adequate measures.
Warnung!
Dies ist ein Produkt der Klasse A. Im Wohnbereich kann dieses Produkt Funkstoerungen verursachen. In
diesem Fall kann vom Benutzer verlangt werden, angemessene Massnahmen zu ergreifen.
Precaución!
Este es un producto de Clase A. En un entorno doméstico, puede causar interferencias de radio, en cuyo
case, puede requerirse al usuario para que adopte las medidas adecuadas.
Attention!
Ceci est un produit de classe A. Dans un environnement domestique, ce produit pourrait causer des
interférences radio, auquel cas l`utilisateur devrait prendre les mesures adéquates.
Attenzione!
Il presente prodotto appartiene alla classe A. Se utilizzato in ambiente domestico il prodotto può causare
interferenze radio, nel cui caso è possibile che l`utente debba assumere provvedimenti adeguati.
VCCI Warning

CONTENTS
PREFACE IV
NOTES,NOTICES,AND CAUTIONS ............................................................IV
SAFETY INSTRUCTIONS..............................................................................V
Safety Cautions................................................................................... v
General Precautions for Rack-Mountable Products.........................vii
Protecting Against Electrostatic Discharge ......................................ix
INTRODUCTION 10
SWITCH DESCRIPTION .............................................................................10
Switch Features ................................................................................11
Gigabit Ethernet Technology............................................................12
802.1P and QoS................................................................................12
FRONT-PANEL COMPONENTS..................................................................15
LED Indicators .................................................................................15
Cable Diagnostic..............................................................................16
POWER INPUT ON REAR PANEL...............................................................18
INSTALLATION 19
Package Contents .............................................................................19
BEFORE YOU CONNECT TO THE NETWORK............................................20
Mounting the Switch on a Rack ........................................................21
Attaching the Rubber Feet................................................................22
Provide for Adequate Ventilation .....................................................22
POWER ON...............................................................................................23
Power Failure...................................................................................23
CONNECTING THE SWITCH 24
Switch to End Node...........................................................................25
Switch to Hub or Switch....................................................................26
Connecting to Network Backbone or Server.....................................27
TECHNICAL SPECIFICATIONS 28
GLOSSARY 31
USA WARRANTY AND REGISTRATION INFORMATION 34
INTERNATIONAL OFFICES .......................................................................40

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Preface
The DGS-1016D/DGS-1024D Manual is divided into sections that describe the system
installation and operating instructions with examples.
Section 1, Introduction - A description of the physical features of the Switch,
including LED indicators, ports and panel descriptions.
Section 2, Installation – A description of the physical installation of the Switch,
mounting the Switch in a equipment rack and powering on the Switch.
Section 3, Connecting the Switch – A description of how to connect your Switch to
an end node, hub, another switch or backbone server.
Appendix Technical Specifications - The technical specifications of the DGS-
1016D/DGS-1024D.
.
Notes, Notices, and Cautions
NOTE: A NOTE indicates important information
that helps you make better use of your device.
NOTICE: A NOTICE indicates either potential
damage to hardware or loss of data and tells you
how to avoid the problem.
CAUTION: A CAUTION indicates the potential for
property damage, personal injury or death.

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Safety Instructions
Use the following safety guidelines to ensure your own personal safety and to help protect your system
from potential damage. Throughout this safety section, the caution icon ( ) is used to indicate cautions
and precautions that you need to review and follow.
Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire, and damage to the equipment,
observe the following precautions.
Observe and follow service markings. Do not service any product except as explained in your
system documentation. Opening or removing covers that are marked with the triangular
symbol with a lightning bolt may expose you to an electrical shock. Only a trained service
technician should service components inside these compartments.
If any of the following conditions occur, unplug the product from the electrical outlet and
replace the part or contact your trained service provider:
– The power cable, extension cable, or plug is damaged.
– An object has fallen into the product.
– The product has been exposed to water.
– The product has been dropped or damaged.
– The product does not operate correctly when you follow the operating
instructions.
•Keep your system away from radiators and heat sources. Also, do not block cooling
vents.
•Do not spill food or liquids on your system components, and never operate the product
in a wet environment. If the system gets wet, see the appropriate section in your
troubleshooting guide or contact your trained service provider.
•Do not push any objects into the openings of your system. Doing so can cause a fire or
an electric shock by shorting out interior components.
•Use the product only with approved equipment.
•Allow the product to cool before removing covers or touching internal components.
•Operate the product only from the type of external power source indicated on the
electrical ratings label. If you are not sure of the type of power source required, consult
your service provider or local power company.

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Safety Instructions (continued)
•To help avoid damaging your system, be sure the voltage selection Switch (if provided)
on the power supply is set to match the power available at your location:
– 115 volts (V)/60 hertz (Hz) in most of North and South America and some Far
Eastern countries such as South Korea and Taiwan
– 100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan.
– 230 V/50 Hz in most of Europe, the Middle East, and the Far East.
•Also be sure that attached devices are electrically rated to operate with the power
available in your location.
•Use only approved power cable(s). If you have not been provided with a power cable
for your system or for any AC-powered option intended for your system, purchase a
power cable that is approved for use in your country. The power cable must be rated for
the product and for the voltage and current marked on the product's electrical ratings
label. The voltage and current rating of the cable should be greater than the ratings
marked on the product.
•To help prevent an electric shock, plug the system and peripheral power cables into
properly grounded electrical outlets. These cables are equipped with three-prong plugs
to help ensure proper grounding. Do not use adapter plugs or remove the grounding
prong from a cable. If you must use an extension cable, use a 3-wire cable with properly
grounded plugs.
•Observe extension cable and power strip ratings. Make sure that the total ampere rating
of all products plugged into the extension cable or power strip does not exceed 80
percent of the ampere ratings limit for the extension cable or power strip.
•To help protect your system from sudden, transient increases and decreases in electrical
power, use a surge suppressor, line conditioner, or uninterruptible power supply (UPS).
•Position system cables and power cables carefully; route cables so that they cannot be
stepped on or tripped over. Be sure that nothing rests on any cables.
•Do not modify power cables or plugs. Consult a licensed electrician or your power
company for site modifications. Always follow your local/national wiring rules.
•When connecting or disconnecting power to hot-pluggable power supplies, if offered
with your system, observe the following guidelines:
– Install the power supply before connecting the power cable to the power supply.
– Unplug the power cable before removing the power supply.
– If the system has multiple sources of power, disconnect power from the system
by unplugging all power cables from the power supplies.
•Move products with care; ensure that all casters and/or stabilizers are firmly connected
to the system. Avoid sudden stops and uneven surfaces.

D-Link DGS-1016D/DGS-1024D Unmanaged Gigabit Ethernet Switch
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General Precautions for Rack-
Mountable Products
•Observe the following precautions for rack stability and safety. Also refer to the rack
installation documentation accompanying the system and the rack for specific caution
statements and procedures.
•Systems are considered to be components in a rack. Thus, "component" refers to any
system as well as to various peripherals or supporting hardware.
CAUTION: Installing systems in a rack without the front and
side stabilizers installed could cause the rack to tip over,
potentially resulting in bodily injury under certain
circumstances. Therefore, always install the stabilizers
before installing components in the rack.
After installing system/components in a rack, never pull
more than one component out of the rack on its slide
assemblies at one time. The weight of more than one
extended component could cause the rack to tip over and
may result in serious injury.
•Before working on the rack, make sure that the stabilizers are secured to the rack,
extended to the floor, and that the full weight of the rack rests on the floor. Install front
and side stabilizers on a single rack or front stabilizers for joined multiple racks before
working on the rack.

D-Link DGS-1016D/DGS-1024D Unmanaged Gigabit Ethernet Switch
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Safety Instructions (continued)
•Always load the rack from the bottom up, and load the heaviest item in the rack first.
•Make sure that the rack is level and stable before extending a component from the rack.
•Use caution when pressing the component rail release latches and sliding a component
into or out of a rack; the slide rails can pinch your fingers.
•After a component is inserted into the rack, carefully extend the rail into a locking
position, and then slide the component into the rack.
•Do not overload the AC supply branch circuit that provides power to the rack. The total
rack load should not exceed 80 percent of the branch circuit rating.
•Ensure that proper airflow is provided to components in the rack.
•Do not step on or stand on any component when servicing other components in a rack.
CAUTION: Never defeat the ground conductor or operate
the equipment in the absence of a suitably installed ground
conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable
grounding is available.
CAUTION: The system chassis must be positively
grounded to the rack cabinet frame. Do not attempt to
connect power to the system until grounding cables are
connected. Completed power and safety ground wiring
must be inspected by a qualified electrical inspector. An
energy hazard will exist if the safety ground cable is omitted
or disconnected.

D-Link DGS-1016D/DGS-1024D Unmanaged Gigabit Ethernet Switch
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Protecting Against Electrostatic Discharge
Static electricity can harm delicate components inside your system. To prevent static damage,
discharge static electricity from your body before you touch any of the electronic components,
such as the microprocessor. You can do so by periodically touching an unpainted metal
surface on the chassis.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
1. When unpacking a static-sensitive component from its shipping carton, do not
remove the component from the antistatic packing material until you are ready to
install the component in your system. Just before unwrapping the antistatic
packaging, be sure to discharge static electricity from your body.
2. When transporting a sensitive component, first place it in an antistatic container or
packaging.
3. Handle all sensitive components in a static-safe area. If possible, use antistatic
floor pads, workbench pads, and an antistatic grounding strap.

10
SECTION 1
Introduction
Switch Description
Switch Features
Ports
Front-Panel Components
LED Indicators
Power Input on Rear Panel
Switch Description
The 16-port DGS-1016D and 24-port DGS-1024D Switches provide
dedicated 10, 100 or 1000 Mbps Ethernet bandwidth on each port. The
ports will automatically detect the speed, duplex and MDI/MDIX status of
the device it is connecting to, and adjust these settings accordingly. The
Switch ports can be used to network computers, printers, servers, routers,
other switches or any device equipped with an Ethernet port. For best
performance, use Category 5 or better Ethernet cabling.
This stand-alone Switch is very easy to set up, there is no network
management required. Just power on the Switch and connect the cables.
Keep in mind however that the standard rules of Ethernet regarding cable
length apply to this and all Ethernet devices. The length of an Ethernet
cable from one device to another cannot exceed 100 meters (or 300 feet).

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Switch Features
The DGS-1016D 16-Port and DGS-1024D 24-port Switches do not require
any management. Both Switches are designed for easy installation,
flexibility and high performance. Connect devices to the Switch as the
scale and volume of network traffic increases.
•Sixteen (DGS-1016D) or twenty-four (DGS-1024D)
10/100/1000 Mbps Ethernet ports
•Cable Diagnostic function at Switch boot up
•Auto-Negotiation for 10/100/1000Mbps and duplex mode
•Auto-MDI/MDIX for each port
•Supports Full/Half-duplex transfer mode for 10 and 100Mbps
•Supports Full-duplex transfer mode for 1000Mbps
•Full wire speed reception and transmission
•Store-and-Forward Switching method
•Supports 8K absolute MAC addresses
•DGS-1016D Supports 340KB RAM for data buffering
•DGS-1024D Supports 500KB RAM for data buffering
•Easy to read diagnostic LEDs
•IEEE 802.3x flow control for Full-duplex
•Back pressure flow control for Half-duplex
•IEEE 802.1p Priority support

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Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same
packet structure, format, and support for CSMA/CD protocol, full duplex,
flow control, and management objects, but with a tenfold increase in
theoretical throughput over 100-Mbps Fast Ethernet and a hundredfold
increase over 10-Mbps Ethernet. Since it is compatible with all 10-Mbps
and 100-Mbps Ethernet environments, Gigabit Ethernet provides a
straightforward upgrade without wasting a company’s existing investment
in hardware, software and trained personnel.
The increased speed and extra bandwidth offered by Gigabit Ethernet is
essential to coping with the network bottlenecks that frequently develop as
computers and their bus speeds get faster and more users use applications
that generate more traffic. Upgrading key components, such as your
backbone and servers to Gigabit Ethernet can greatly improve network
response times as well as significantly speed up the traffic between your
subnets.
Gigabit Ethernet supports video conferencing, complex imaging and
similar data-intensive applications. Likewise, since data transfers occur 10
times faster than Fast Ethernet, servers outfitted with Gigabit Ethernet
NIC’s are able to perform 10 times the number of operations in the same
amount of time.
802.1P and QoS
The DGS-1024D and DGS-1016D Switches support 802.1p priority
queuing Quality of Service. The implementation of QoS (Quality of
Service) and benefits of using 802.1p priority queuing are described here.
Advantages of QoS
QoS is an implementation of the IEEE 802.1p standard that allows
network administrators a method of reserving bandwidth for important
functions that require a large bandwidth or have a high priority, such as
VoIP (voice-over Internet Protocol), web browsing applications, file server
applications or video conferencing. Not only can a larger bandwidth be
created, but other less critical traffic can be limited, so bandwidth can be
saved. The Switch has separate hardware queues on every physical port to

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which packets from various applications are mapped to and assigned a
priority. The illustration below shows how 802.1P priority queuing is
implemented on the Switch. The eight IEEE 802.1P priority levels defined
by the standard are mapped to the four class queues used in the Switch.
Mapping QoS on the Switch
The picture above shows the default priority setting for the Switch. Class-3
has the highest priority of the four priority queues on the Switch. In order
to implement QoS, the user is required to instruct the Switch to examine
the header of a packet to see if it has the proper identifying tag tagged.
Then the user may forward these tagged packets to designated queues on
the Switch where they will be emptied, based on priority.
"The DUT support strict mode for 802.1p QoS. The untagged pkt will
follow the priority 0 to work (i.e. class 1)."
Understanding QoS
The Switch has four priority queues. These priority queues are labeled as 3,
the high queue to 0, the lowest queue. The eight priority tags, specified in
IEEE 802.1p are mapped to the Switch's priority tags as follows:
•Priority 0 is assigned to the Switch's Q1 queue.
•Priority 1 is assigned to the Switch's Q0 queue.
•Priority 2 is assigned to the Switch's Q0 queue.
•Priority 3 is assigned to the Switch's Q1 queue.
•Priority 4 is assigned to the Switch's Q2 queue.
•Priority 5 is assigned to the Switch's Q2 queue.
•Priority 6 is assigned to the Switch's Q3 queue.

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•Priority 7 is assigned to the Switch's Q3 queue.
The Switch uses strict priority for Scheduling. Strict priority-based
scheduling, any packets residing in the higher priority queues are trans-
mitted first.

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Front-Panel Components
Note: The Switch illustrations used for this manual depict only the model
DGS-1016D Switch.
On the front panel of the Switch you will see the following.
•LED status indicators
•16 Auto-Negotiating 10/100/1000Mbps ports on the DGS-1016D
•24 Auto-Negotiating 10/100/1000Mbps ports on the DGS-1024D
Front Panel View of the Switch
LED Indicators
The LED indicators of the Switch include a Power status indicator, one
Link/Act indicator for each port as well as one speed 100/1000Mbps
indicator for each port. When the Switch is powered on or restarted, it
initiates a diagnostic function as part of the boot up process. The speed
indicators are also used to display cable diagnostic information when the
Switch boots up.
LED Indicators

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Cable Diagnostic
Upon booting up the Switch, a Cable Diagnostic is used to detect three
problems that may prevent successful connection. This feature operates
only on ports that are connected to 1000Mbps devices. If there are
problems on a port connected to a Gigabit Ethernet device (1000Mbps),
try restarting the Switch and watch the speed (100/1000Mbps) LED
indicators to determine is the problem is a fault in the cable or connecting
hardware. For ports operating at 10 or 100Mbps, the LED indicators can
be used for less specific troubleshooting.
The faults detected by the cable diagnostic for 1000Mbps operation are as
follows:
•Open circuit - a lack of continuity between the pins at each end of the
Ethernet cable or a disconnected cable.
•Short circuit - two or more conductors short-circuited.
•Connectivity is checked for each of the eight wires of a cable to
ensure its capability for running 1000Mbps.
During the diagnostic, each port is scanned to determine if the Ethernet
cable and connectors is in good working order. During the diagnostic
process the speed LED for each port blinks green in sequential order. This
port scan takes about 3 seconds. If a cable fault is detected, the
corresponding port’s speed LED will light amber for 5 seconds. The
Switch is then reset for normal operation. It takes about 2 seconds for the
Switch to reset. The entire Cable Diagnostic process takes about 10
seconds from the time the Switch is powered on.
The table below summarizes Cable Diagnostic information.
NOTE: the cable diagnostic function does not
detect the length of Ethernet cabling. Remember
that the length of cabling between two Ethernet
devices may not exceed 100 meters (or 300 feet).

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LED Indicator Description
Power This lights green while the Switch is
receiving power.
Link/Act A steady green light indicates the
corresponding port is connected and a valid
link is established. This will blink green
when there is activity on the port.
100Mbps/1000Mbps The speed indicator will light green if the
corresponding port is connected and
operating at 1000Mbps. An amber light
indicates the port is operating at 100Mbps.
If the port is connected (as indicated by the
Link/Act indicator) and the speed indicator
does not light, the port is operating at
10Mbps.
Cable Diagnostic
(during boot up only) Open or short circuit, or hardware
connectivity problem −100/1000Mbps LED
blinks amber for 5 seconds

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Power Input on Rear Panel
The power cable connection is located on the rear panel of the Switch.
Switch power input is provided by and internal universal power supply
(100-240VAC : 12V/3.3A).
The AC power connector is a standard three-pronged connector that
supports the power cord. Please see the Power On section below for
instructions on how to properly connect the Switch to a power source.
Rear panel view of the Switch

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SECTION 2
Installation
Package Contents
Before You Connect to the Network
Installing the Switch
Power On
Package Contents
Open the shipping carton of the Switch and carefully unpack its contents.
The carton should contain the following items:
•One DGS-1016D 16-Port/DGS-1024D 24-Port
10/100/1000BASE-T Gigabit Ethernet Switch
•Four rubber feet with adhesive backing
•One power Cord
•Mounting ears for rack-mounting
•This manual
If any item is found missing or damaged, please contact your local D-Link
reseller for replacement.

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Before You Connect to the Network
The site where you install the Switch may greatly affect its performance.
Please follow these guidelines for setting up the Switch.
•Install the Switch on a sturdy, level surface that can support at
least 3 kg (6.6 lbs) of weight. Do not place heavy objects on the
Switch.
•The power outlet should be within 1.82 meters (6 feet) of the
Switch.
•Visually inspect the power cord and see that it is fully secured to
the AC power port.
•Make sure that there is adequate space for proper heat dissipation
from and adequate ventilation around the Switch. Leave at least
10 cm (4 inches) of space at the front and rear of the Switch for
ventilation.
•Install the Switch in a fairly cool and dry place for the acceptable
temperature and humidity operating ranges.
•Install the Switch in a site free from strong electromagnetic field
generators (such as motors), vibration, dust, and direct exposure
to sunlight.
•When installing the Switch on a level surface, attach the rubber
feet to the bottom of the device. The rubber feet cushion the
Switch, protect the casing from scratches and prevent it from
scratching other surfaces.