D-Link DGS-1024T User Manual
D-Link DGS-1024T
24-Port 10/100/100Mbps with 2 Combo SFP Ports
Gigabit Ethernet Switch
Manual
First Edition
Building Networks for People
RECYCLABLE
D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
CONTENTS
PREFACE............................................................................................................................................................III
INTENDED READERS ........................................................................................................................................... III
NOTES, NOTICES, AND CAUTIONS.............................................................................................................III
SAFETY INSTRUCTIONS................................................................................................................................IV
Safety Cautions................................................................................................................................................iv
General Precautions for Rack-Mountable Products........................................................................................v
Protecting Against Electrostatic Discharge....................................................................................................vi
INTRODUCTION..................................................................................................................................................7
ETHERNET TECHNOLOGY......................................................................................................................................7
Fast Ethernet Technology................................................................................................................................7
Gigabit Ethernet Technology...........................................................................................................................7
SWITCHING TECHNOLOGY ....................................................................................................................................7
SWITCH DESCRIPTION...........................................................................................................................................8
Features ...........................................................................................................................................................8
Ports.................................................................................................................................................................9
FRONT-PANEL COMPONENTS................................................................................................................................9
LED Indicators.................................................................................................................................................9
REAR PANEL DESCRIPTION .................................................................................................................................10
SIDE PANEL DESCRIPTION...................................................................................................................................10
GIGABIT COMBO PORTS......................................................................................................................................11
INSTALLATION.................................................................................................................................................12
Package Contents...........................................................................................................................................12
BEFORE YOU CONNECT TO THE NETWORK .........................................................................................................12
INSTALLING THE SWITCH WITHOUT THE RACK...................................................................................................13
INSTALLING THE SWITCH IN A RACK...................................................................................................................13
Mounting the Switch in a standard 19” rack.................................................................................................14
POWER ON..........................................................................................................................................................14
Power Failure ................................................................................................................................................14
CONNECTING THE SWITCH .........................................................................................................................15
SWITCH TO END NODE .......................................................................................................................................15
SWITCH TO HUB OR SWITCH ...............................................................................................................................15
CONNECTING TO NETWORK BACKBONE OR SERVER ..........................................................................................16
TECHNICAL SPECIFICATIONS.....................................................................................................................17
GLOSSARY..........................................................................................................................................................19
D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
Preface
The DGS-1024T Ma nual is divided into sections that de scribe the system installation and operating instru ctions
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 including connecting the
switch to the network and connecting stacked switch groups.
Section 3, Connecting the switch – A description of how to connect your switch to an end node, hub,
switch or backbone server.
Appendix A, Technical Specifications - The technical specifications of the DGS-1024T.
Glossary – Lists definitions for terms and acronyms used in this document.
Index – Index of relevant terms in the DGS-1024T Manual.
Intended Readers
The DGS-1024T Manual contains information for setup and management and of the DGS-1024T switch. This
guide is intended for network managers familiar with network management concepts and terminology.
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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D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
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 ope rat i n g inst ruct i ons.
• 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 sou rce required, consult your service provider or local power
company.
• 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.
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D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
Safety Instructions (continued)
• Use only approved power cable(s). If you have not been provid ed w ith a power cab le 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 pro duct and for the voltage and cur rent 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.
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 b odily injury und er
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 r ack 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.
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D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
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 lock ing 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.
NOTE: A qualified electrician must perform all connecti ons to DC power and to
safety grounds. All electrical wiring must comply with applicable local or national
codes and practices.
CAUTION: Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact t he appro priate electric al
inspection authority or an electrician if you are unc ertain that suitable grounding i s
available.
CAUTION: The system chassis must be positively grounded to the rac k 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 gro und cable
is omitted or disconnected.
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.
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D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
Introduction
Ethernet Technology
Switch Description
Features
Ports
Front-Panel Components
Side Panel Description
Rear Panel Description
Gigabit Combo Ports
Ethernet Technology
Fast Ethernet Technology
SECTION 1
The growing importance of LANs and the increasing complexity of desktop computing applications are fueling
the need for high performance networks. A number of high-speed LAN technologies are proposed to provide
greater bandwidth and improve client/server response times. Among them, Fast Ethernet, or 100BASE-T,
provides a non-disruptive, smooth evolution from 10BASE-T technology.
100Mbps Fast Ethernet is a standard specified by the IEEE 802.3 LAN committee. It is an extension of the
10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps, while maintaining the
Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Ethernet protocol.
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 100Mbps Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet.
Since it is compatible with all 10Mbps and 100Mbps 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 are essential to coping with the network
bottlenecks that frequently develop as computers and their busses get faster and more users use applications th at
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 subnetworks.
Gigabit Ethernet enables fast connections to support video conferencing, complex imaging, and similar dataintensive 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.
In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to take
advantage of today and tomorrow’s rapidly improving switching and routing internetworking technologies.
Switching Technology
Another key development pushing the limits of Ethernet technology is in the field of switching technology. A
switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting among connected
Ethernet or fast Ethernet LAN segments.
Switching is a cost-effective way of increasing the total network capacity available to users on a local area
network. A switch increases capacity and decreases network loading by making it possible for a local area
network to be divided into different segments that do not compete with each other for network transmission
capacity, giving a decreasing the load on each segment.
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D-Link DGS-1024T Unmanaged Gigabit Ethernet Switch
The switch acts as a high-speed selective bridge between the individual segments. Traffic that needs to go from
one segment to another is automatically forwarded by the switch, without interfering with any other segments.
This allows the total network capacity to be multiplied, while still maintaining the same network cabling and
adapter cards.
For Fast Ethernet or Gigabit Ethernet networks, a switch is an effective way of eliminating problems of chaining
hubs beyond the “two-repeater limit.” A switch can be used to split parts of the network into different collisio n
domains, for example, making it possible to expand your Fast Ethern et network beyond the 205-meter network
diameter limit for 100BASE-TX networks. Switches supporting both traditional 10Mbps Ethernet and 100Mbps
Fast Ethernet are also ideal for bridging between existing 10M bp s net w o rks and new 100Mbps networks.
Switching LAN technology is a marked improvement over the previous generation of network bridges, which
were characterized by higher latencies. Routers have also been used to segment local area networks, but the cost
of a router and the setup and maintenance required make routers relatively impractical. Today’s switches are an
ideal solution to most kinds of local area network congestion problems.
Switch Description
The DGS-1024T Switch unit is equipped wi t h twe nt y -f o ur po rt s pr o vi di n g dedi cat ed 1 0, 10 0 o r 10 0 0 M bps
bandwidth. These ports can be used for connecting PCs, servers, hubs and other Ethernet devices. The twentyfour tri-speed ports use standard twisted pair cabling and are ideal for segmenting networks into small, connected
subnets. Each port can support up to 2000 Mbps of throughput in full-duplex mode. In addition, the Switch is
equipped with two Mini GBIC ports enabling fiber optic access to a server or network backbone for all the
clients served by the Switch. This stand-alone Switch enables the network to use some of the most demanding
multimedia and imaging applications concurrently with other user applications without creating bottlenecks.
Features
• Twenty-four 10/100/1000BASE-T Gigabit ports for connections to server or network backbone
• IEEE 802.3 compliant
• IEEE 802.3ab compliant
• IEEE 802.3u compliant
• IEEE 802.3z compliant
• IEEE 802.3x flow control for full duplex mode
• Full and half-duplex for both 10Mbps and 100Mbps connections. The 1000BASE-T Gigabit Ethernet
module operates at full-duplex only. Full-duplex allows the switch port to simultaneously transmit and
receive data, and only works with connections to full-duplex capable end stations and switches.
Connections to a hub must take place at half-duplex
• Store and forward switching scheme capability to support rate adaptation and protocol conversion
• Data forwarding rate 14,880 pps per port at 100% of wire-speed for 10Mbps speed
• Data forwarding rate 148,810 pps per port at 100% of wire-speed for 100Mbpsspeed
• Data forwarding rate 1,488,100 pps per port at 100% of wire-speed for 1000Mbps speed
• Data filtering rate eliminates all error packets, runts, etc. at 14,880 pps per port at 100% of wire-speed
for 10Mbps speed
• Data filtering rate eliminates all error packets, runts, etc. at 148,810 pps per port at 100% of wire-speed
for 100Mbps speed
• Data filtering rate eliminates all error packets, runts, etc. at 1,488,100 pps per port at 100% of wirespeed for 1000Mbps speed
• Layer 2 switching based on MAC address
• Address handling: auto-learning, auto-aging
• MAC Address table: Support addresses up to 8K
• A packet buffer size of 400 Kbytes
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