D-Link DGS-1024C Ethernet Switch, 24 Port Gigabit Unmanaged User Manual

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Preface

D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to notify any person or organization

of such revisions or changes.

Manual Revisions

Trademarks

D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the United States or other countries.

All other company or product names mentioned herein are trademarks or registered trademarks of their respective companies.

No part of this publication or documentation accompanying this product may be reproduced in any form or by any means or used to make any

derivative such as translation, transformation, or adaptation without permission from D-Link Corporation/D-Link Systems, Inc., as stipulated by the

United States Copyright Act of 1976 and any amendments thereto. Contents are subject to change without prior notice.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits

are designed to provide reasonable protection against harmful interference 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.

Revision Date Description

1.0 February 19, 2010 DGS-1008G - Hardware revision A1

1.1 May 18, 2010 Added Windows® 7 Support

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Table of Contents

Preface ............................................................................................. 2

Manual Revisions ..........................................................................................2

Trademarks .....................................................................................................2

FCC Statement ...............................................................................................2

Safety Instructions ......................................................................... 4

Safety Cautions .............................................................................................4

Protecting Against Electrostatic Discharge ........................................6

Product Overview ........................................................................... 7

Package Contents ........................................................................................7

Setup .................................................................................................................7

Introduction ...................................................................................................7

D-Link Green Ethernet Technology ..............................................7

Fast Ethernet Technology .................................................................8

Gigabit Ethernet Technology ..........................................................8

Switching Technology .......................................................................9

802.1p Priority Tagging .....................................................................9

Jumbo Frame Support ......................................................................9

Features .........................................................................................................10

Hardware Overview ...................................................................................11

Top Panel (LEDs) ................................................................................11

Rear Panel (Connections) ...............................................................13

Installation .................................................................................... 14

Before You Connect to the Network ....................................................14

Mounting the Switch on the Wall .........................................................15

Mounting on a cement wall ..........................................................15

Mounting on a wood wall ..............................................................15

Connecting the Switch .............................................................................16

DGS-1008G to End Node ................................................................16

Hub/Switch to DGS-1008G ............................................................16

Connecting To Network Backbone or Server ..........................16

Troubleshooting ........................................................................... 17

Networking Basics ........................................................................ 18

Check your IP address ...............................................................................18

Statically Assign an IP address ...............................................................19

Glossary ......................................................................................... 20

Technical Specications ............................................................... 25

RJ-45 Pin Specications ...........................................................................26

Contacting Technical Support ..................................................... 27

Registration .................................................................................. 28

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To reduce the risk of bodily injury, electrical shock, re, 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re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.

Safety Instructions

Safety Cautions

Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential damage.

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• 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modications.Alwaysfollowyour

local/national wiring rules.

• Whenconnectingordisconnectingpowertohot-pluggablepowersupplies,ifoered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.

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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, rst place it in an antistatic container or packaging.

3. Handle all sensitive components in a static-safe area. If possible, use antistatic oor pads, workbench pads, and an antistatic grounding

strap.

Protecting Against Electrostatic Discharge

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Product Overview

Setup

The setup of the DGS-1008G can be performed using the following steps:

• Thepoweroutletshouldbewithin1.82meters(6feet)oftheSwitch.

• VisuallyinspecttheDCpowerjackandmakesurethatitisfullysecuredtothepoweradapter.

• DonotcovertheventilationholesonthesidesoftheSwitch,andmakesurethereisadequateventilationaroundit.

• Donotplaceheavyobjectsontheswitch.

Package Contents

Introduction

D-Link Green Ethernet Technology

D-Link Green Ethernet Technology implements special power-saving features under speed at 1000Mbps that detect cable length and link status

and adjust power usage accordingly.

Green Ethernet Technology saves energy in two specic ways:

1. Ifthereisnolinkonaport(whenthereisnoconnectionorthedeviceconnectedisturnedo)theport(s)willentera“sleepmode”

which will drastically reduce the amount of power used.

2. D-Link Green Ethernet Technology detects the length of connected Ethernet cable and adjusts power usage accordingly without

aectingperformance.Thisway,aportconnectedtoa20mcableonlyusesasmuchpowerasitneeds,insteadofusingfullpower,

which is only needed for 100m cables.

WallMountKit

D-Link DGS-1008G 8-port Gigabit Desktop Switch

Power Adapter

Warranty Card

Quick Install Guide

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Fast Ethernet Technology

The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance

networks.100BASE-TX(FastEthernet)providesa cost-eectiveand high-performancesolutionforsmallworkgroups,SMBs(SmalltoMedium

Businesses), and any network supporting bandwidth-intensive applications. Fast Ethernet technology operates at 10 times the speed of traditional

Ethernet,oeringmaximumperformanceandenhancedcapabilityforexistingEthernet-basednetworks.

100Mbps Fast Ethernet is a standard specied 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 CSMA/CD Ethernet protocol. Since the 100Mbps Fast Ethernet is compatible

with all other 10Mbps Ethernet environments, it provides a straightforward upgrade and takes advantage of the existing investment in hardware,

software, and personnel training.

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,

ow 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oered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 that generate more trac. Upgrading key components, such as your

backbone and servers to Gigabit Ethernet can greatly improve network response times as well as signicantly speed up the trac between your

subnetworks.

Gigabit Ethernet enables fast optical ber connections to support video conferencing, complex imaging, and similar data-intensive applications.

Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outtted 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-eective

method to take advantage of today and tomorrow’s rapidly improving switching and routing internetworking technologies

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Switching Technology

Switches provide full-line speed and dedicated bandwidth for all connections. This is in contrast to hubs, which use the traditional shared

networking topology, where the connected nodes contend for the same network bandwidth. When two switching nodes are communicating, they

are connected with a dedicated channel between them, so there is no contention for network bandwidth with other nodes. As a result, the switch

reduces considerably, the likelihood of trac congestion.

ForEthernetnetworks,aswitchisaneectivewayofeliminatingtheproblemofchaininghubsbeyondthe“two-repeaterlimit.”Aswitchcanbe

usedtosplitpartsofthenetworkintodierentcollisiondomains,makingitpossibletoexpandyourEthernetnetworkbeyondthe205-meter

network diameter limit for 100BASE-TX networks. Switches supporting both 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging

between existing 10Mbps networks and newer 100Mbps networks.

Switching LAN technology is a marked improvement over the previous generation of network hubs and bridges, which were characterized by

higher latencies. Routers have also been used to segment local area networks, but the cost of a router, the setup and maintenance required, make

routers relatively impractical. Today switches are an ideal solution to most kinds of local area network congestion problems.

802.1p Priority Tagging

802.1p places a tag in a frame to indicate the priority of the frame. A tag will represent a priority of 0-7 and an 802.1p compliant switch can read

this tag and prioritize trac accordingly. In 802.1p a port can receive frames with varying priority tags and classify them based on these tags. A

VoIP phone that supports 802.1p can assign a priority to its VoIP trac and when it enters the switch the switch can give it a higher priority so that

voice trac is always clear and jitter free. The DGS-1008G supports the 802.1p feature with 4 precongured priority queues. When a frame tagged

with an 802.1p priority bit is received by the switch it places the frame into one of 4 queues prioritized according to its tag number. For example,

trac tagged with a priority bit of 7 will have a higher priority then trac tagged with a priority bit of 6 and so forth.

Jumbo Frame Support

The DGS-1008G switch supports Jumbo Frames up to 9720 Bytes in size. Jumbo Frame support is designed to improve network throughput and

signicantly reduce the CPU utilization of large le transfers such as multimedia les or large data les by enabling more ecient larger payloads

per packet.

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Features

The DGS-1008G 8-port 10/100/1000BASE-T Gigabit Ethernet Switch was designed for easy installation and high performance in an environment

where trac on the network and the number of users increase continuously.

• Eight(8)10/100/1000BASE-TGigabitEthernetports

• SupportsAuto-Negotiationfor10/100/1000Mbpsandduplexmode

• SupportsAuto-MDI/MDI-Xforeachport

• SupportsFull/Halfduplextransfermodefor10and100Mbps

• SupportsFull-duplextransfermodefor1000Mbps

• SupportsIEEE802.1pPriorityQueuing,upto4queues

• Fullwirespeedreceptionandtransmission

• Store-and-Forwardswitchingmethod

• Supports4KabsoluteMACaddresses

• Extensivefront-paneldiagnosticLEDs

• JumboFrame9720Bytesin1000MbsMode

• IEEE802.3xowcontrolforfullduplex

• Backpressureowcontrolforhalfduplex

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Hardware Overview

Top Panel (LEDs)

The LED indicators of the Switch include Power and Link/Act/Speed. The following shows the LED indicators for the Switch along with an explanation

of each indicator (refer to the next page).

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Power Indicator

This green indicator illuminates when the Switch is receiving power.

Link/Act/Speed

This indicator illuminates steadily when a port is connected to a device successfully and has a good link. The indicator will blink to indicate that a

port is transmitting or receiving data on the network.

The LED will illuminate amber when the port is connected to a 10/100Mbps Ethernet station. It is green when the port is connected to a 1000Mbps

Ethernet station.

Cable Diagnostics − LED Indications

When the Switch is booted up (when the Switch is powered on), the Cable Diagnostic function is initialized and run. The Cable Diagnostics function

will detect two common faults in an Ethernet cable connecting the Switch to a remote network device: an open circuit (a lack of continuity between

the pins at each end of the Ethernet cable or a disconnected cable) and a short circuit (two or more conductors short-circuited). Any of these common

cable faults will be detected by the Cable Diagnostic function and the LEDs will display the results of the Cable Diagnostics function as follows:

Open, Short, or Improper Termination:

Link/Act/Speed LED: Amber

Cable connection good:

Link/Act/Speed LED: Green

The Cable Diagnostics function operates only during the Switch boot up (when the Switch is rst powered on). The Cable Diagnostic rst scans the

eight Ethernet ports to determine if the Ethernet cable is in good working order. This process is indicated by the Speed LED blinking green for each

of the eight ports, sequentially. If a cable fault is detected, it is indicated by the corresponding port’s Speed LED glowing amber, after the initial

port scan. The Switch is then reset for normal operation.

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Auto MDI/MDI-X Ports:

Eight (8) Gigabit Ethernet, Auto-Negotiating ports (10/100/1000Mbps) Comprehensive LED indicators display the conditions of the Switch and

status of the network.

Power Jack:

Power is supplied through an external power adapter. Check the technical specication section for information about the power input voltage.

Since the DGS-1008G does not require a power button, plugging its power adapter into a power outlet will immediately power it on.

Rear Panel (Connections)

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Installation

This section will explain how to connect Ethernet devices to your new D-Link switch and how to mount the switch.

Before You Connect to the Network

ThesitewhereyouinstalltheSwitchmaygreatlyaect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eldgenerators(suchasmotors),vibration,dust,anddirectexposure

to sunlight.

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Mounting the Switch on the Wall

The DGS-1008G can also be mounted on a wall. Two mounting slots are provided on the bottom of the switch for this purpose. Please make sure

that the front panel is exposed in order to view the LEDs. Please refer to the illustration below:

Mounting on a cement wall

1. Mount the Nylon screw anchors into a cement wall.

2. Drive the T3 x 15L screws into the Nylon screw anchors.

3. Hook the mounting holes of the switch back on the screws.

Mounting on a wood wall

1. Drive the T3 x 15 L screws into the wood wall.

2. Hook the mounting holes of the switch back on the screws.

(1) 3/4 inch minimum for wood wall

(2) 3 inch minimum for cement wall.

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Connecting the Switch

DGS-1008G to End Node

End nodes include PCs outtted with a 10, 100, or 1000Mbps RJ-45 Ethernet Network Interface Card (NIC) and most routers. An end node can

be connected to the Switch via a twisted-pair Category 3, 4, 5, or 5e UTP/STP cable. The end node can be connected to any of the ports of the

Switch.

The Link/Act LEDs for each UTP port light green when the link is valid. The LED over the port label indicates a port speed of either 10/100Mbps or

1000Mbps. A blinking LED on the bottom indicates packet activity on that port.

Hub/Switch to DGS-1008G

These connections can be accomplished in a number of ways using a standard Ethernet cable.

• A10BASE-ThuborswitchcanbeconnectedtotheSwitchviaatwisted-pairCategory3,4,5,or5eUTP/STPcable.

• A100BASE-ThuborswitchcanbeconnectedtotheSwitchviaatwisted-pairCategory5UTP/STPcable.

• A1000BASE-TswitchcanbeconnectedtotheSwitchviaatwisted-pairCategory5/5eorbetterUTP/STPcable.

Connecting To Network Backbone or Server

Any of the eight Gigabit Ethernet ports are ideal for uplinking to a network backbone or network server.

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Troubleshooting

1. Why can´t I share my Internet connection to multiple computers when using my D-Link DGS-1008G switch?

IfyouareconnectingdirectlytoaCableorDSLmodem,youwillneedarouterto“share”yourInternetconnectionoracomputerusingICS

(Internet Connection Sharing) or Proxy. Switches and hubs do not allow you to share a single IP address to multiple computers.

Another alternative is to contact your ISP and purchase extra IP addresses for each additional computer.

2. Does the DGS-1008G switch have an uplink port?

The DGS-1008G has Auto-MDI ports which automatically sense the type of cable being used (e.g. Crossover or Straight-through) and adjust

themselves accordingly to pass data over the network.

3. What is the maximum length of Category 3, 4 or 5 twisted pair cable that can be used between the DGS-1008G and other devices such

as routers, switches, computers, etc.?

The maximum length of Category 3, 4 or 5 twisted pair cable that can be used between computers and other devices on a network is 100

metersorabout328feet.Keepinmindthatthisisatheoreticallimit.Usually,youwillwanttokeepthedistancebetweendeviceswell

below the limit.

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Networking Basics

Check your IP address

After you install your new D-Link adapter or if you already have an Ethernet adapter installed on your computer, by default, the TCP/IP settings

should be set to obtain an IP address from a DHCP server (i.e. router) automatically. To verify your IP address, please follow the steps below.

• ClickonStart > Run. In the run box type cmd and click OK. (Windows® 7 and Vista® users type cmd in the Start Search box.)

• Attheprompt,typeipcong and press Enter.

• ThiswilldisplaytheIPaddress,subnetmask,andthedefaultgatewayofyouradapter.

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Statically Assign an IP address

If you are not using a DHCP capable gateway/router, or you need to assign a static IP address, please follow the steps below:

Step 1

Windows® 7 - Click on Start > Control Panel > Network and Internet > Network and Sharing Center > Change Adapter Setting.

Windows Vista® - Click on Start > Control Panel > Network and Internet > Network and Sharing Center > Manage Network Connections.

Windows® XP - Click on Start > Control Panel > Network Connections.

Windows® 2000 - From the desktop, right-click My Network Places and select Properties.

Step 2

Right-click on the Local Area Connection which represents your network adapter and select Properties.

Step 3

Highlight Internet Protocol (TCP/IP) and click Properties.

Step 4

Click Use the following IP address and enter an IP address that is on the same subnet as your network

or the LAN IP address on your router.

Example: If the router´s LAN IP address is 192.168.0.1, make your IP address 192.168.0.X where X is a

number between 2 and 99. Make sure that the number you choose is not in use on the network. Set

Default Gateway the same as the LAN IP address of your router (192.168.0.1).

Set Primary DNS the same as the LAN IP address of your router (192.168.0.1). The Secondary DNS is

not needed or you may enter a DNS server from your ISP.

Step 5

Click OK twice to save your settings.

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Glossary

1000BASE-LX

A short laser wavelength on multimode ber optic cable for a maximum length of 550 meters.

1000BASE-SX

Alongwavelengthfora“longhaul”beropticcableforamaximumlengthof10kilometers.

100BASE-FX

100Mbps Ethernet implementation over ber.

100BASE-TX

100Mbps Ethernet implementation over Category 5 and Type 1 Twisted Pair cabling.

10BASE-T

The IEEE 802.3 specication for Ethernet over Unshielded Twisted Pair (UTP) cabling.

Aging

The automatic removal of dynamic entries from the Switch Database which have timed-out and are no longer valid.

ATM

Asynchronous Transfer Mode. A connection oriented transmission protocol based on xed length cells (packets). ATM is designed to carry a complete

range of user trac, including voice, data, and video signals.

Auto-Negotiation

A feature on a port, which allows it to advertise its capabilities for speed, duplex, and ow control. When connected to an end station that also

supports auto-negotiation, the link can self-detect its optimum operating setup.

Backbone Port

A port that does not learn device addresses, and that receives all frames with an unknown address. Backbone ports are normally used to connect

the Switch to the backbone of your network. Note that backbone ports were formerly known as designated downlink ports.

Backbone

The part of a network used as the primary path for transporting trac between network segments.

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Bandwidth

Information capacity, measured in bits per second, that a channel can transmit. The bandwidth of Ethernet is 10Mbps, the bandwidth of Fast

Ethernet is 100Mbps.

Baud Rate

The switching speed of a line. Also known as line speed.

BOOTP

The BOOTP protocol allows you to automatically map an IP address to a given MAC address each time a device is started. In addition, the protocol

can assign the subnet mask and default gateway to a device.

Bridge

A device that interconnects local or remote networks no matter what higher level protocols are involved. Bridges form a single logical network,

centralizing network administration.

Broadcast

A message sent to all destination devices on the network.

Broadcast Storm

Multiple simultaneous broadcasts that typically absorb available network bandwidth and can cause network failure.

Console Port

The port on the Switch accepting a terminal or modem connector. It changes the parallel arrangement of data within computers to the serial form

used on data transmission links. This port is most often used for dedicated local management.

CSMA/CD

Channel access method used by Ethernet and IEEE 802.3 standards, in which devices transmit only after nding the data channel clear for some

period of time. When two devices transmit simultaneously, a collision occurs and the colliding devices delay their retransmissions for a random

amount of time.

Data Center Switching

The point of aggregation within a corporate network where a switch provides high performance access to server farms, a high-speed backbone

connection, and a control point for network management and security.

Ethernet

A LAN specication developed jointly by Xerox, Intel, and Digital Equipment Corporation. Ethernet networks operate at 10Mbps using CSMA/CD

to run over cabling.

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Fast Ethernet

100Mbps technology based on the Ethernet/CD network access method.

Flow Control – (IEEE 802.3x)

A means of holding packets back at the transmit port of the connected end station. Prevents packet loss at a congested switch port.

Forwarding

The process of sending a packet toward its destination by an internetworking device.

Full Duplex

Asystemthatallowspacketstobetransmittedandreceivedatthesametimeand,ineect,doublesthepotentialthroughputofalink.

Half Duplex

A system that allows packets to be transmitted and received, but not at the same time. Contrast with full duplex.

IP Address

Internet Protocol address. A unique identier for a device attached to a network using TCP/IP. The address is written as four octets separated with

full-stops (periods), and is made up of a network section, an optional subnet section and a host section.

IPX

Internetwork Packet Exchange. A protocol allowing communication in a NetWare network.

LAN

Local Area Network. A network of connected computing resources (such as PCs, printers, servers) covering a relatively small geographic area (usually

not larger than a oor or building). Characterized by high data rates and low error rates.

Latency

The delay between the time a device receives a packet and the time the packet is forwarded out of the destination port.

Line Speed

See baud rate.

Main Port

The port in a resilient link that carries data trac in normal operating conditions.

MDI

Medium Dependent Interface. An Ethernet port connection where the transmitter of one device is connected to the receiver of another device.

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MDI-X

Medium Dependent Interface Cross-over. An Ethernet port connection where the internal transmit and receive lines are crossed.

MIB

Management Information Base. Stores a device’s management characteristics and parameters. MIBs are used by the Simple Network Management

Protocol (SNMP) to contain attributes of their managed systems. The Switch contains its own internal MIB.

Multicast

Single packets copied to a specic subset of network addresses. These addresses are specied in the destination-address eld of the packet.

Protocol

A set of rules for communication between devices on a network. The rules dictate format, timing, sequencing, and error control.

Resilient Link

A pair of ports that can be congured so that one will take over data transmission should the other fail. See also main port and standby port.

RJ-45

Standard 8-wire connectors for IEEE 802.3 10BASE-T networks.

RMON

RemoteMonitoring.SubsetofSNMPMIBII,whichallowsmonitoringandmanagementcapabilitiesbyaddressinguptotendierentgroupsof

information.

RPS

Redundant Power System. A device that provides a backup source of power when connected to the Switch.

Server Farm

A cluster of servers in a centralized location serving a large user population.

SLIP

Serial Line Internet Protocol. A protocol that allows IP to run over a serial line connection.

SNMP

Simple Network Management Protocol. A protocol originally designed to be used in managing TCP/IP internets. SNMP is presently implemented

on a wide range of computers and networking equipment and may be used to manage many aspects of network and end station operation.

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Spanning Tree Protocol – (STP)

A bridge-based system for providing fault tolerance on networks. STP works by allowing you to implement parallel paths for network trac, and

to ensure that redundant paths are disabled when the main paths are operational and enabled if the main paths fail.

Stack

A group of network devices that are integrated to form a single logical device.

Standby Port

The port in a resilient link that will take over data transmission if the main port in the link fails.

Switch

A device that lters, forwards, and oods packets based on the packet’s destination address. The Switch learns the addresses associated with each

switch port and builds tables based on this information to be used for the switching decision.

TCP/IP

A layered set of communications protocols providing Telnet terminal emulation, FTP le transfer, and other services for communication among a

wide range of computer equipment.

Telnet

A TCP/IP application protocol that provides virtual terminal service, letting a user log in to another computer system and access a host as if the user

were connected directly to the host.

TFTP

Trivial File Transfer Protocol. Allows you to transfer les (such as software upgrades) from a remote device using your switch’s local management

capabilities.

UDP

User Datagram Protocol. An Internet standard protocol that allows an application program on one device to send a datagram to an application

program on another device.

VLAN

Virtual LAN. A group of location- and topology-independent devices that communicate as if they are on a common physical LAN.

VLT

Virtual LAN Trunk. A Switch-to-Switch link which carries trac for all the VLANs on each Switch.

VT100

A type of terminal which uses ASCII characters. VT100 screens have a text-based appearance.

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Standards

• IEEE802.310BASE-TEthernet

• IEEE802.3u100BASE-TXFastEthernet

• IEEE802.3ab1000BASE-TGigabitEthernet

• IEEE802.3xFlowControl

• IEEE802.1pPriorityQueuing

Protocol

• CSMA/CD

Data Transfer Rate

Ethernet:

• 10Mbps(half-duplex)

• 20Mbps(full-duplex)

Fast Ethernet:

• 100Mbps(half-duplex)

• 200Mbps(full-duplex)

Gigabit:

•2000Mbps(full-duplex)

Network Cables

• 10BASE-T:2-pairUTPCat.3,4,5(100m),EIA/TIA-568

100-ohm STP (100 m)

• 100BASE-TX:2-pairUTPCat.5(100m),EIA/TIA-568

100-ohm STP (100 m)

• 1000BASE-T:4-pairUTPCat.5(100m),EIA/TIA-568

100-ohm STP (100 m)

Number of Ports

• 8x10/100/1000Mbpsauto-negotiation,autoMDI/MDI-Xports

DC inputs

• Switching=5V/1.2A

Technical Specications

Temperature

• Operating:0°~40°C(32ºto104ºF)

• Storage:-10°~70°C(14ºto158ºF)

Dimensions (W x H x D)

• 6.5x4.5x1.4inches(164.5x112.4x35.0mm)

Humidity

• Operating:10%~90%RH,Non-condensing

• Storage:5%~90%RH,Non-condensing

EMI

• FCCClassB,CEClassB

EMI

• cUL

• LVD

Transmission Method

• Store-and-forward

RAM Buer

• 192KBytesperdevice

Filtering Address Table

• 4Kentriesperdevice

Packet Filtering / Forwarding Rate

• 10MbpsEthernet:14,880/pps

• 100MbpsFastEthernet:148,800/pps

• 1000MbpsGigabitEthernet=148,800/pps

MAC Address Learning

• Automaticupdate

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RJ-45 Pin Specications

The following table shows the standard RJ-45 receptacle/connector and their pin assignments.

RJ-45 Connector pin assignment

Contact Media Direct Interface Signal

1 Rx +(receive)

2 Rx - (receive)

3 Tx + (transmit)

4 Not used

5 Not used

6 Tx - (transmit)

7 Not used

8 Not used

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Contacting Technical Support

U.S. and Canadian customers can contact D-Link technical support through our web site or by phone.

Before you contact technical support, please have the following ready:

• Modelnumberoftheproduct(e.g.DGS-1008G)

• HardwareRevision(locatedonthelabelonthebottomoftheswitch(e.g.revA1))

• SerialNumber(s/nnumberlocatedonthelabelonthebottomoftheswitch)

You can nd software updates and user documentation on the D-Link website as well as frequently asked questions and answers to technical

issues.

For customers within the United States:

Phone Support:

(877) 453-5465

Internet Support:

http://support.dlink.com

For customers within Canada:

Phone Support:

(800) 361-5265

Internet Support:

http://support.dlink.ca

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Product registration is entirely voluntary and failure to complete or return this form will not diminish your warranty rights.

Registration

Version 1.1

May 18, 2010

D-Link DGS-1024C Ethernet Switch, 24 Port Gigabit Unmanaged Network Internet Hub Desktop Rackmount, Plug N Play ( ),Black

Product's Documents

User Manual

Specifications

D-Link DGS-1024C Questions and Answers