D-Link DES1226, DES-1218 User Manual

DES-1218 / DES1226

10/100/1000 Mbps

Switch with optional Gigabit module

User’s Guide

First Edition (June, 2000)

651ES1218015

Printed In Taiwan

RECYCLABLE

Wichtige Sicherheitshinweise

1. Bitte lesen Sie sich diese Hinweise sorgfältig durch.

2. Heben Sie diese Anleitung für den spätern Gebrauch auf.

3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig­oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung.

4. Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die
vom Hersteller zugelassen sind.

5. Das Gerät is vor Feuchtigkeit zu schützen.

6. Bei der Aufstellung des Gerätes is t auf sichern Stand zu achten. Ein Kippen oder Fallen
könnte Verletzungen hervorrufen. Verwenden Sie nur sichere Standorte und beachten Sie die
Aufstellhinweise des Herstellers.

7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor Überhitzung schützt.
Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden.

8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.

9. Die Netzanschlußsteckdose muß aus Gründen der elektrischen Sicherheit einen
Schutzleiterkontakt haben.

10. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollete auch
nichts auf der Leitung abgestellt werden.

11. Alle Hinweise und Warnungen die sich a m Geräten befinden sind zu beachten.

12. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz
trennen. Somit wird im Falle einer Überspannung eine Beschädigung vermieden.

13. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät
gelangen. Dies könnte einen Brand bzw. Elektrischen S chlag auslösen.

14. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur
von authorisiertem Servicepersonal geöffnet werden.

15. Wenn folgende Situationen auftreten ist das Gerät vom Stromnet z zu trennen und von einer
qualifizierten Servicestelle zu überprüfen:

a – Netzkabel oder Netzstecker sint beschädigt.
b – Flüssigkeit ist in das Gerät eingedrungen.
c – Das Gerät war Feuchtigkeit ausgesetzt.
d – Wenn das Gerät nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit

Hilfe dieser Anleitung keine Verbesserung erzielen.
e – Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f – Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

16. Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile
verwendet werden. Der Einsatz von ungeeigneten Er satzteilen kann eine weitere
Beschädigung hervorrufen.

17.

Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner.
Somit stellen Sie die Betriebssicherheit des Gerätes sicher.

Limited Warranty

Hardware:

D-Link warrants its hardware products to be free from defects in workmanship and materials, under normal use and
service, for the following periods measured from date of purchase from D-Link or its Authorized Reseller:

Product Type Warranty Period
Complete products One year
Spare parts and spare kits 90 days

The one-year period of warranty on c omplete products applies on condition that the product's Registration Card is fille d
out and returned to a D-Link office within ninety (90) days of purchase. A list of D-Link offices is provided at the back of
this manual, together with a copy of the Registratio n Car d. F ailing suc h tim ely registration of purchase, the warranty
period shall be limited to 90 days.

If the product proves defective within the applicable warr anty per iod, D-Link will provide repair or replacement o f the
product. D-Link shall have the sole discretion whether to repair or replace, and replacement product may be new or
reconditioned. Replacement product shall be of equivalent or better specifications, relative to the defective product, but
need not be identical. Any product or part repaired by D-Link pursuant to this warranty shall have a warranty period of
not less than 90 days, from date of such repair, irrespective of any earlier expiration of original warranty period. When
D-Link provides replacement, then the defective product becomes the property of D-Link.

Warranty service may be obtained by contacting a D-Link office within the applicable warranty period, and requesting a
Return Material Authorization (RMA) number. If a Registration Card fo r the product in question has not been returned
to D-Link, then a proof of purchase (such as a copy of the dated purchase invoice) must be provided. If Purchaser's
circumstances require special handling of warranty correction, then at the time of requesting RMA number, Purchaser
may also propose special procedure as may be suitable to the case.

After an RMA number is issued, the defective product must be packaged securely in the original or other suitable
shipping package to ensure that it will not be damaged in transit, and the RMA number m u st be pro minently marked on
the outside of the package. The package must be mailed or otherwise shipped to D-Link with all costs of
mailing/shipping/insurance prepaid; D-Link will ordinarily reimburse Pu rc h ase r fo r m ailing/ shipping/insurance
expenses incurred for return of defective product in accordance with this warranty. D-Link shall never be responsible
for any software, firmware, information, or memory data of Purchaser contained in, stored on, or integrated with any
product returned to D-Link pursuant to this warranty.

Any package returned to D-Link without an RMA number will be rejected and shipped back to Purchaser at Pu r c haser's
expense, and D-Link reserves the right in suc h a case to levy a reasonable handling charge in addition mailing or
shipping costs.

Software:

Warranty service for software products may be obtained by contacting a D-Link office within the applicable warranty
period. A list of D-Link offices is provided at the back of this manual, together with a copy of the Registration Card. If a
Registration Card for the product in question has not been returned to a D-Link office, then a proof of purchase (such as
a copy of the dated purchase invoice) must be provided when requesting warranty service. The term "purchase" in this
software warranty refers to the purchase transaction and resulting licence to use such software.

D-Link warrants that its software products will perform in substantial co nfo r mance with the applicable product
documentation provided by D-Link with such software product, for a period of ninety (90) days from the date of purchase
from D-Link or its Authorized Reseller. D-Link warrants the magnetic media, on which D-Link provides its software
product, against failure during the same warranty period. This warranty applies to purchased software, and to
replacement software provided by D-Link pursuant to this warranty, but shall not apply to any update or replaceme nt
which may be provided for download via the Internet, or to any update which may otherwise be provided free of charge.

D-Link's sole obligation under this software war r anty shall be to r e place any defective software product with product
which substantially conforms to D-Link's applicable product doc umentation. Purchaser assumes responsibility fo r the
selection of appropriate applicatio n and system/platform software and associated refe rence materials. D-Link makes no
warranty that its software products will work in combination with any har dware, or any application or system/platform
software product provided by any third party, excepting only such products as are expressly represented, in D-Link's
applicable product documentation as be ing c ompatible. D-Link's obligation under this warranty shall be a reasonable
effort to provide compatibility, but D-Link shall have no obligation to provide compatibility when there is fault in the
third-party hardware or software. D-Link makes no war r anty that o pe r atio n of its software products will be
uninterrupted or absolutely error-free, and no warranty that all defects in the software product, within or without the
scope of D-Link's applicable product documentation, will be corrected.

LIMITATION OF WARRANTIES

IF THE D-LINK PRODUCT DOES N OT OPERATE AS WARRANTED ABOVE, THE CUSTOMER' S SOL E REMEDY
SHALL BE, AT D-LINK'S OPTION, REPAIR OR REPLACEMENT. TH E FOREGOING WARRANTIES AND
REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
EITHER IN FACT OR BY OPERATION OF L AW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. D-LINK NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON T O ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE
SALE, INSTALLATION MAINT ENANCE OR USE OF D-LINK'S PRODUCTS
D-LINK SHALL NOT BE LIABL E UNDER THIS WARRANTY IF ITS TESTIN G AND EXAMINATION DISCLOSE
THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY THE CUSTOMER'S OR
ANY THIRD PERSON'S MISUSE, NEGL ECT , IMPROPER INSTALLATION OR TESTING, U NAUTHORIZED
ATTEMPTS TO REPAIR, OR ANY OT HER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING OR OT HER HAZARD.

LIMITATION OF LIABILITY

IN NO EVENT WILL D-LIN K BE L IABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS,
COST OF COVER OR OTHER INCIDENTAL, CON SEQU ENTIAL OR INDIRECT DAMAGES ARISING OUT THE
INSTALLATION, MAINT ENANCE, USE, PERFORMANCE, FAILU RE OR INTERRUPTION OF A D- LINK
PRODUCT, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY. THIS LIMITATION WILL APPLY EVEN IF
D-LINK HAS BEEN ADVISED OF THE POSSIBILIT Y OF SUCH DAMAGE.
IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, SOME STATES DO NOT ALLOW THE
LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE
ABOVE LIMITATION MAY NOT APPLY TO YOU.

D-Link Offices for Registration and Warranty Service

The product's Registration Card, provided at the back of this manual, must be sent to a D-Link office. To obtain an RMA
number for warranty service as to a hardware product, or to obtain warranty service as to a software product, contact
the D-Link office nearest you. An addresses/
telephone/fax list of D-Link offices is provided in the back of this manual.

Trademarks

Copyright 1998 D-Link Corpo r ation.
Contents subject to change without prior notice.
D-Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc.

All other trademarks belong to their respective proprietors.

Copyright Statement

No part of this publication may be repro duced 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

FCC Warning

This equipment has been tested and found to comply with the lim its fo r a Class A digital device , pursuant to P art 15 o f
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, m ay c ause harmful interference to radio
communications. Operation of this equipmen t in a residential area is likely to cause harmful interference in whic h c ase
the user will be required to corre c t the interference at his own expense.

This device complies with part 15 of the FCC Rules. Ope r atio n is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.

CE Mark Warning:

This is a Clas s 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.

BSMI Warning

VCCI A Warning

Table of Contents

0 ABOUT THIS GUIDE.................................................................................................................................IX

C

ONVENTIONS

O

VERVIEW OF THIS USER’S GUIDE

.....................................................................................................................................................

......................................................................................................................

IX
IX

1 INTRODUCTION..........................................................................................................................................1

F

AST ETHERNET TECHNOLOGY

G

IGABIT ETHERNET TECHNOLOGY

S

WITCHING TECHNOLOGY

DES-1218/DES-1226 10/100/1000 M

............................................................................................................................1

.......................................................................................................................1

....................................................................................................................................2

BPS SWITCH

..............................................................................................2

General Description of Switch.........................................................................................................................2

Performance features.......................................................................................................................................3

Ports.................................................................................................................................................................4

Optional Gigabit Extension Modules...............................................................................................................4

1000BASE-SX (SC) Module (DES-122G).....................................................................................................................4

1000BASE-LX (SC) Module (DES-122GL) ..................................................................................................................4

GBIC Gigabit Ethernet Module (DES-122GB)............................................................................................................... 4

1000BASE-T Module (DES-122T).................................................................................................................................4

1000BASE-SX (MT-RJ) Module (DES-122GM )*........................................................................................................5

2 UNPACKING AND SETUP.........................................................................................................................6

U

NPACKING

S

ETUP

D

ESKTOP OR SHELF INSTALLATION

R

ACK INSTALLATION

P

OWER ON

..........................................................................................................................................................6

...................................................................................................................................................................6

......................................................................................................................7

............................................................................................................................................7

............................................................................................................................................................8

Power Failure ..................................................................................................................................................8

3 IDENTIFYING EXTERNAL COMPONENTS...........................................................................................9

F

RONT PANEL

R

EAR PANEL

S

IDE PANELS

LED I

NDICATORS

.......................................................................................................................................................9

......................................................................................................................................................10

......................................................................................................................................................11

...............................................................................................................................................11

4 CONNECTING THE SWITCH..................................................................................................................12

S

WITCH TO END NODE

S

WITCH TO HUB OR SWITCH

C

ONNECTING TO NETWORK BACKBONE OR SERVER

.......................................................................................................................................12

...............................................................................................................................13

..........................................................................................14

5 SWITCH MANAGEMENT ........................................................................................................................15

L

OCAL CONSOLE MANAGEMENT

........................................................................................................................15

Console port (RS-232 DCE)...........................................................................................................................15

User Interface.................................................................................................................................................16

Software Features ..........................................................................................................................................17

Port Speed - 10/100 Mbps UTP....................................................................................................................................17

Port Speed – Gigabit Ethernet Ports..............................................................................................................................17

Flow Control.................................................................................................................................................................17

Port Trunk Groups ........................................................................................................................................................17

Port Monitor..................................................................................................................................................................17

Priority Queues .............................................................................................................................................................18

VLAN Group................................................................................................................................................................19

6 MANAGEMENT CONCEPTS...................................................................................................................20

P

ORT TRUNK GROUPS

IEEE 802.1
VLAN

P PRIORITY

..............................................................................................................................................................21

S

........................................................................................................................................20

.......................................................................................................................................21

Port-based VLANs..........................................................................................................................................22

VLAN Segmentation.....................................................................................................................................................22

VLAN and Trunk Groups..............................................................................................................................................22

7 TECHNICAL SPECIFICATIONS.............................................................................................................23

8 CABLES AND CONNECTORS.................................................................................................................25

9 CABLE LENGTHS......................................................................................................................................27

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

0 A

This User’s Guide prov ides instruction for installing the Switch, making the proper connectio ns
to an Ethernet network, and setting the configurations using the built-in console interface.

BOUT THIS

G

UIDE

Conventions

For simplicity, this documentation uses the terms “Switch” (first letter upper case) to refer to
both the DES-1218 and DES-1226 Ethernet Switch, and “switch” (first letter lowe r case) to refer
to all Ethernet switches, including the DES-1218 and D ES-1226. When a d istinction betw een the
two models is necessary, the model number will be given to distinguish between them.

Overview of this User’s Guide

♦

Chapter 1, Introduction. Describes the switch and its features.

♦

Chapter 2, Unpacking and Setup. Helps you get started with the basic installation of the
switch.

♦

Chapter 3, Identifying External Components. Describes the front panel, rear panel and
LED indicators of the switch.

♦

Chapter 4, Connecting the Switch. Tells how you can connect the Switch to your
Ethernet/Fast Ethernet network.

♦

Chapter 5, Switch Management. Talks about Local Console Management via the RS-232
DCE console port and other aspects about how to manage the Switch.

♦

Chapter 6, Management Concepts. A more detailed discussion of some of the management
features of the Switch including, Port Trunk Groups, VLANs, and IEEE 802.1p Priority
Queues.

♦

Appendix A, Technical Specifications. Lists the technical specifications of the switch.

♦

Appendix B, Cables and Connectors. Describes the RJ-45 receptacle/connector, straight
and crossover cables and standard pin assignments.

♦

Appendix C, Cable Lengths. Contains chart for fiber-optic and copper cable maximum
distances.

ix

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

1

1 I

This section describes the f eatures of the Switch, as well as givin g some backgroun d informatio n
about Fast Ethernet, Gigabit Ethernet, and switching technology.

NTRODUCTION

Fast Ethernet Technology

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 environme nts, Gigabit Ethernet provides a straightfo rward upgrade withou t
wasting a company’s exist ing investment in hardware, software, and trained personnel.

The increased speed and extra band width offe red by Gigabit Ethe rnet is essential to co ping with
the network bottlenecks that frequently develop as computers and their busses 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 subnetworks.

Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex
imaging, and similar data-intensive applications. Likewise, since data transfers occur 10 time s
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.

1

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

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 which don’t compete with each other for network transmission capacity, giving
a decreased load on each.

The switch acts as a high-speed selective bridge between the individual segments.
Traffic that needs to go from one segment to another (from one port to another) is
automatically forwarded by the switch, without interfering with any other segments
(ports). 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 collision domains, for example, making
it possible to expand your Fast Ethernet 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
10Mbps networks 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.

DES-1218/DES-1226 10/100/1000 Mbps Switch

General Description of Switch

The Switch is equipped with unshielded twisted-pair (UTP) cable ports providing
dedicated 10 or 100 Mbps bandwidth. The DES-1218 has 16 UTP ports, the DES-1226
has 24 UTP ports. Both models include one MDI-X/MDI-II convertible port (port 1x)
that can be used for uplinking to another switch. These ports can be used for connecting
PCs, servers, and hubs. The dual speed ports use standard twisted-pair cabling and are
ideal for segmenting networks into small, connected subnetworks. Each port can
support up to 200 Mbps of throughput in full-duplex mode.

In addition, the Switch can be fitted with an optional 2 port Gigabit Ethernet module to
uplink to a server or network backbone.

2

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

The modules that can be installed include: the DES-122G 2 port 1000BASE-SX (S C type
connector), DES-122GL 2 port 1000BASE-LX, DES-122GB 2 port GBIC, DES-122T 2
port 1000BASE-T, and DES-122GM 2 port 1000BASE-SX (MT-RJ type connector)
modules.

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. The built-in console interface can be used to configure the Switch’s
settings for Priority Queuing, VLAN, and Port Trunk Groups, Port Monitoring and Port
Speed.

Performance features

♦ IEEE802.3 compliant
♦ IEEE802.3u compliant
♦ IEEE802.3z compliant
♦ IEEE802.3ab compliant
♦ IEEE802.1p Priority Queues
♦ IEEE802.3x flow control in full duplex mode
♦ NWay Auto-negotiation
♦ Full and half-duplex for both 10Mbps and 100Mbps connections. The Gigabit

Ethernet extension 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

♦ Supports single-mode and multi-mode connections
♦ Store and forward switching scheme capability to support rate adaptation and

protocol conversion

♦ Auto-polarity detection and correction of incorrect polarity on the 10/100Mbps TX

ports

♦ 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 100Mbps

speed

♦ 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 wire-speed for 1000Mbps speed

♦ Forwarding 64 to1536 byte frames w i th c o r re c t CRC chec ksum
♦ Layer 2 switching based on MAC address
♦ Address handling : auto-learning , aut o- aging
♦ Address table : Support addresses up to 17K
♦ Buffer size: 8 Megabytes (DES-1218 ) 10 Megabytes (DES-1226)
♦ Broadcast storm control
♦ Supports 9 Port-based VLAN Groups
♦ Port Trunking
♦ Back pressure in half-duplex

3

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

♦

RS-232 DCE console port for Switch management

Ports

♦ 16 or 24 High-performance ports for connecting to end stations, servers and

hubs (MDI-X 10/100 Ethernet UTP ports and 1 MDI-X/MDI-II Uplink port).

♦ All UTP ports can auto-negotiate between 10Mbps/100Mbps, half-duplex, or

full duplex and flow control.

♦ One front panel slide-in module interface for the DES-122G 2 port 1000BASE-

SX (SC type connector), DES-122GL 2 port 1000BASE-LX, DES-122GB 2 port
GBIC, DES-122T 2 port 1000BASE-T, and DES-122GM 2 port 1000BASE-SX
(MTRJ type connector) for connecting to another switch, server or network
backbone.

♦

RS-232 DCE Diagnostic port (console port) for setting up and managing the
Switch via a connection to a console terminal or PC using a terminal emulation
program.

Optional Gigabit Extension Modules

1000BASE-SX (SC) Module (DES-122G)

♦ 1000BASE-SX (with SC type connector) Gigabit Ethernet ports
♦ Fully compliant with IEEE802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x compliant Flow Control support f or f ull- d up lex
♦ Per port packet buffer: 2Mbytes

1000BASE-LX (SC) Module (DES-122GL)

♦

1000BASE-LX (with SC type connector) Gigabit Ethernet ports

♦ Fully compliant with IEEE802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x compliant Flow Control support f or f ull- d up lex
♦ Per port packet buffer: 2Mbytes

GBIC Gigabit Ethernet Modul e (DES-122GB)

♦

GBIC Gigabit Ethernet ports

♦ Support Full-duplex operation only
♦ IEEE 802.3x compliant Flow Control support f or f ull- d up lex
♦ Per port packet buffer: 2Mbytes

Note: This module requires using a GBIC converter. Contact your D-Link vendor for
either the DGS-701 1000BASE-SX GBIC FTR-8519-3A (Finisar) or DGS-702
1000BASE-LX GBIC FTR-1319-3A (Finisar).

1000BASE-T Module (DES-122T)

♦

1000BASE-T Gigabit Ethernet ports

♦ Fully compliant with IEEE802.3ab
♦ Support Nway Auto-negotiation for full-duplex operation

4

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

♦ Support Auto-negotiation for flow-control
♦ IEEE 802.3x compliant Flow Control support f or f ull- d up lex
♦ Back pressure flow control support for half-duplex mode
♦ Per port packet buffer: 2Mbytes

1000BASE-SX (MT-RJ) Module (DES-122GM )*

♦

1000BASE-SX (with MT-RJ type connector) Gigabit Ethernet ports

♦ Fully compliant with IEEE802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x compliant Flow Control support f or f ull- d up lex
♦ Per port packet buffer: 2Mbytes

*DES-122GM is not available as of this writing, July 2000.

5

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

2

2 U

This chapter provides unpacking and setup information for the Switch Fast Ethernet/Gigabit
Switch.

NPACKING AND SETUP

Unpacking

Open the shipping carton of the switch and carefully unpack its contents. The carton should
contain the following items :

♦

One DES-1218 or DES-1226 Stand-alone Switch

♦

One AC power cord

♦

This User’s Guide CD-ROM

♦

Registration card

♦

Mounting Kit (two brackets and screws)

♦

Four rubber feet with adhesive backing

♦

RS-232 Console Cable

If any item is found missing or damaged, please contact your local D-Link Reseller for
replacement.

Setup

The site where you install the Switch may greatly effect 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 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 proper heat dissipation from and adequate ventilation around the
switch. Leave at least 10 cm of space at the front and rear of the switch for ventilation.

♦

Install the switch in a fairly cool and dry place. See Appendix A, Technical Specifications,
for the acceptable temperature an d 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.

6

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Desktop or Shelf Installation

When installing the switch on a desktop or shelf, the rubber feet included with the
switch should first be attached. Attach these cushioning feet on the bottom at each
corner of the device. Allow enough ventilation space between the switch and any other
objects in the vicinity.

Figure 2-1 DES-1226 Switch installed on a Desktop or Shelf

Rack Installation

The Switch can be mounted in a standard 19” rack. Use the following diagrams to guide
you.

Figure 2-2 Fasten Mounting Brackets to Switch

Fasten the mounting brackets to the Switch using the screws provided. With the
brackets attached securely, you can mount the Switch in a standard rack as shown in
Figure 2-3 on the following page.

7

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Mounting the Switch in a standard 19” rack.

Figure 2-3 DES-1226 Switch in Rack

Power on

Plug one end of the AC power cord into the power connector of the switch and the other
end into the local power source outlet.

After the Switch is powered on, the LED indicators will momentarily blink. This
blinking of the LED indicators represents a reset of the system.

Power Failure

As a precaution, in the event of a power failure, unplug the switch. When power is
resumed, plug the switch back in.

8

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

3

3 I

This chapter describes the front panel, rear panel, optional plug-in modules, and LED
indicators of the Switch.

DENTIFYING EXTERNAL

C

OMPONENTS

Front Panel

The front panel of the Switch consists of LED indicators for power and for each port, an
RS-232 communication port, 16 (DES-1218) or 24 (DES-1226) 10/100 Mbps twisted-pair
ports and a slot for installing an optional 2 port Gigabit Ethernet module.

DES-1218

Figure 3-1. Front panel view of the DES-1218

9

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

DES-1226

Figure 3-2. Front panel view of the DES-1226

♦ An RS-232 DCE console port for setting up and managing the switch via a

connection to a console terminal or PC using a terminal emulation program.

♦ 16 or 24 high-performance, NWay Ethernet ports all of which operate at 10/100

Mbps for connections to end stations, servers and hubs. All ports can auto­negotiate between 10Mbps or 100Mbps, full or half duplex, and flow control.

♦ MDI-X/MDI-II button for port 1x located between the RS-232 DCE console port

and the RJ-45 UTP ports. This port can be put in uplink (MDI-II) position by
pushing the button in.

♦

Slot for optional 2 port Gigabit Ethernet module.

Rear Panel

The rear panel contains the AC power connector. The AC power connector is a standard
three-pronged connector that supports the power cord. Plug-in the female connector of
the provided power cord into this socket, and the male side of the cord into a power
outlet. Supported input voltages range fr om 100 ~ 240 VAC at 50 ~ 60 Hz.

Figure 3-3. Rear panel view of the Switch.

10

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Side Panels

The right side panel of the Switch contains two system fans. The left side panel
contains heat vents.

The system fans are used to dissipate heat. The sides of the system also provide heat
vents to serve the same purpose. Do not block these openings, and leave at least 6
inches of space at the rear and sides of the switch for proper ventilation. Be reminded
that without proper heat dissipation and air circulation, system components might
overheat, which could lead to system failure.

Figure 3-4 Side Panels (the right side panel is pictured on top)

LED Indicators

♦ Power The Power LED will will light green after the switch is powered on to

indicate the ready state of the device.

♦ Link/Act Located on the upper left corner of each twisted pair port, this LED

indicates a valid link (steady green) and will blink when data is being transmitted
via that port connection.

♦ 10/100 Mbps On the upper right corner of each twisted pair port, this LED will

light when the connection speed is operating at 100 Mbps. An unlit LED indicates
a connection speed of 10 Mbps.

♦ Link (Optional 2 Port Gigabit Ethernet Module) Steady green indicates valid link.

Port speed must be designated 1000F for this to light.

♦

Act (Optional 2 Port Gigabit Ethernet Module) Blinking Green indicates activity
on port.

11

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

4

4 C

This chapter describes how to connect the DES-1218/1226 to your Fast Ethernet network.

ONNECTING THE SWITCH

Switch to End Node

End nodes include PCs outfitted with a 10, 100 or 10/100 Mbps RJ-45 Ethernet/Fast
Ethernet Network Interface Card (NIC) and most routers. The RJ-45 UTP ports on
NICs and most routers are MDI-II. When using a normal straight-through cable, an
MDI-II port must connect to an MDI-X port.

An end node can be connected to the Switch via a two-pair Category 3, 4, 5 UTP/STP
straight cable (be sure to use Category 5 UTP or STP cabling for 100 Mbps Fast
Ethernet connections). The end node should be connected to any of the ports (1x - 16x on
the DES-1218, 1x – 24x on the DES-1226) of the Switch. Port 1x is an uplink port if the
MDI-X/MDI-II button is pushed in. An end node should not be connected to the uplink
port unless using a crossover cable.

Figure 4-1. Switch connected to an End Node

The Link/Act LEDs for each UTP port light green when the link is valid. The LED on
the right side of the port indicates port speed, it will light for 100 Mbps connections
only. A blinking LED on the left side indicates packet activity on that port.

12

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Switch to Hub or Switch

These connections can be accomplished in a number of ways. The most important
consideration is that when using a normal, straight-through cable, the connection
should be made between a normal crossed port (Port 1x, 2x, 3x, etc.) and an uplink (port
1x in MDI-II mode) port. If you are using a crossover cable, the connection must be
made from uplink to uplink, or from a crossed port to another crossed port.

♦ A 10BASE-T hub or switch can be connected to the Switch via a two-pair Category

3, 4 or 5 UTP/STP straight cable.

♦ A 100BASE-TX hub or switch can be connected to the Switch via a two-pair

Category 5 UTP/STP straight cable.

If the other switch or hub contains an unused uplink port, we suggest connecting the
other device’s uplink (MDI-II) port to any of the switch’s (MDI-X) ports using a normal
straight-through cable, as shown below.

If the other device does not have an unused uplink port, make the connection with a
normal straight-through cable from the designated MDI-II port on the switch to any
normal crossed port on the hub. Alternatively, if you have a crossover cable you can
save the MDI-II (uplink) port for other connections and make this one from a crossed
port to another crossed port.

Figure 4-2. Switch connected to a normal (non-Uplink) port on a hub or switch using a

straight or crossover cable

13

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Connecting to Network Backbone or Server

The slide-in module Gigabit Ethernet ports are ideal for uplinking to a network
backbone or network server. These ports operate at 1000 Mbps in full-duplex mode.

Connection to the Gigabit Ethernet ports are made using fiber optic cable or Cat-5
copper cable, depending on the type of port. A valid connection is indicated when the
Link LED is lit.

DES-1218 with 2 Port 1000BASE-SX Slide-in Module.

14

Figure 4-3 Gigabit Uplink Connection

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

5

5 S

This chapter discusses the features used to manage the Switch, and explains important
points regarding these features. Configuring the Switch is discussed in detail.

WITCH

M

ANAGEMENT

Local Console Management

Local console management involves the administration of the Switch via a direct
connection to the RS-232 DCE console port. This is an Out-Of-Band connection,
meaning that it is on a different circuit than normal network communications, and thus
works even when the network is down.

The local console management connection involves a terminal or PC running terminal
emulation software to operate the switch’s built-in console program. Using the console
program, a network administrator can manage and control the functions of the Switch.

Console port (RS-232 DCE)

Out-of-band management requires connecting a terminal, such as a VT-100 or a PC
running terminal emulation program (such as HyperTerminal, which is automatically
installed with Microsoft Windows) a to the RS-232 DCE console port of the Switch.
Switch management using the RS-232 DCE console port is called Local Console
Management to differentiate it from management done via management platforms,
such as D-View, HP OpenView, etc.

The console port is set for the following configuration:

◊ Baud rate: 9,600
◊ Data width: 8 bits
◊ Parity: none
◊ Stop bits: 1

◊

Flow Control None

Make sure the terminal or PC you are using to make this connection is configured to
match these settings.

If you are having problems making this connection on a PC, make sure the emulation is
set to VT-100. You will be able to set the emulation by clicking on the File menu in you

HyperTerminal window, click on Properties in the drop down menu and click the
Settings tab, here you will find the Emulation options. If you still don’t see anything,

try hitting <Ctrl> + r to refresh the screen.

15

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Figure 5-1. Management Console Screen

Once you have connected to the console port on the switch, you should see a window like
that pictured in Figure 5-1. If the screen appears but is blank, pres s “Control” and “R”
(Ctrl+R) simultaneously to refresh the screen. Use this screen to perform all the
available management functions.

User Interface

The command keys are displayed on the bottom of screen, move the cursor the correct
position to change function setting. The command keys are described below:

Tab – move the cursor to the next item
Back Space – move the cursor to previous item
Space – toggle, select
Ctrl+r, Enter – screen refresh
Ctrl+d – all feature settings are reset the default values.
Ctrl+w – apply and configuration settings. Use this command to let the settings take

effect. This will also save the settings data to the EEPROM in the switch.

16

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Software Features

The device provides the ability to configure the port speed, flow control, link
aggregation, port monitor, 802.1p priority queues, and VLAN group.

Port Speed - 10/100 Mbps UTP

You can select the desired Speed and Duplex for each port. Possible settings include:
Auto, 10F, 10H, 100F, and 100H where the number 10 or 100 is the speed in Mbps, and
the H or F designates half-duplex or full-duplex. Choosing Auto enables NWay auto­negotiation to automatically configure the port speed to match the highest speed
attainable by the device being connected. The port speed default setting is Auto.

Port Speed – Gigabit Ethernet Ports

1000BASE-SX fiber ports can operate in 1000 Mbps Full-duplex (1000F) only.
1000BASE-T ports offer four possible settings: Auto, 100H , 100F, and 1000F.
When Auto is chosen, NWay will negotiate three settings:

♦ Speed - 100/1000 (100 Mbps connections are attainable for hardware version A2

only)

♦ Duplex - Full/Half (Half-duplex mode is only available for 100 Mbps connections in

hardware version A2 only)

♦ IEEE 802.3x Flow Control – Enable/Disable

Note: The hardware version (A1 or A2) can be found in the lower right-hand corner of
the management console screen.

Flow Control

Toggles flow control Enable or Disable. It is useful during periods of heavy network
activity when the Switch’s buffers can receive too much traffic and fill up faster than
the Switch can forward the information. In such cases, the Switch will intervene and
tell the transmitting device to pause to allow the information in the port buffer to be
sent. The flow control default setting is Enable.

Port Trunk Groups

The Switch supports the use of port trunk groups. Each trunk group may contain 2 to 4
ports as members for a potential bit rate of up to 800 Mbps per trunk group. See the
discussion of Port Trunk Groups in Chapter 6 for more detailed information about
port trunk groups.

Port Monitor

Allows you to select a port to monitor activity for analysis. The Monitored Port will
mirror all activity to the Monitoring Port. This feature is useful for analyzing traffic in
ports where acute traffic congestion or other problems may exist.

17

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Priority Queues

This feature allows you to customize packet traffic handling to the particular needs of
your network. Configure this setting for packets pass ing through the port, using IEEE

802.1p priority tagging. These settings are universal, that is, they are for all ports on
the Switch. Four priority levels may be assigned with Queue 3 being the highest
priority queue, and Queue 0 being the lowest priority queue.

Note: The settings you assign to the queues, numbers 0-7, represent the IEEE 802.1p
priority tag number. Do not confuse these settings with port numbers.

The highest priority queue, Queue 3, should reserved for data in which latency can have
adverse affects on the function of an application, such as video or audio data, where
latency can produce distorted sounds and images. Packets in the lower priority queues
will be processed with less urgency. See the discussion on IEEE 802.1p Priority and
management of priority queues in Chapter 6.

Figure 5-2 shows how priority queues might be assigned. Access the Priority Queue
settings on the second page of the console management screen

18

Figure 5-2 Example of Priority Queue Assignments

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

VLAN Group

Up to 9 port-based virtual LAN (VLAN) groups can be designated for the switch.
Individual ports can exist in two or more VLANs simultaneously, so VLAN groups can
overlap or intersect. For a more detailed discussion of VLANs, see Chapter 6.

Using the space bar, select each port that you would like to be included in the assigned
VLAN. A “v” under the port number indicates the port is in the designated VLAN
group. Figure 5-3 gives an example of different VLANs assigned to different ports.
Notice that a port may be a member of more than one VLAN.

Figure 5-3 Port-based VLANs

Note: In order to use VLAN segmentation in conjunction with port trunk groups, you
must first set the port trunk group(s), and then you may configure VLAN settings. If you
wish to change the port trunk grouping with VLANs already in place, you will need to
reconfigure the VLAN settings after changing the port trunk group settings.

19

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

6

6 M

This chapter discusse s some of the important man agement co ncepts used to manage the Switch.
The functions dealt with in this chapter include Port Trunk Groups, VLAN network
segmentation, and IEEE 802.1p Priority Queues.

ANAGEMENT

C

ONCEPTS

Port Trunk Groups

Port trunk groups are used to combine a number of ports together to make a single high­bandwidth data pipeline.

The DES-1218 supports up to 5 trunk groups, the DES-1226 can utilize up to 7 trunk groups.
With up to 4 ports in each group, a potential bit rate of 800 Mbps can be achieved.

Figure 5-4 Example of Port Trunk Group

The switch treats all ports in a trun k group as a single port. Data transmitted to a specific host
(destination address) will alw ay s be tran smitted o ve r th e same p o rt in a trunk group. This allows
packets in a data stream to arrive in the same order they were sent. A trunk connection can be
made with any oth er switch that maintains host-to-h ost data streams over a single trunk port.
Switches that use a load-balancing scheme and send packets of a ho st-to-host data stream ov er
multiple trunk ports cannot have a trunk connection with the Switch.

Note: If the two Gigabit Ethernet ports are used as a trunk group and either port is disconnected,
packets intended for the disconnected port will be dropped.

20

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

IEEE 802.1p Priority

Priority Tagging is a function defined by the IEEE 802.1p standard designed to provide
a means of managing traffic on a network where many different types of data may be
transmitted simultaneously. It is intended to alleviate problems associated with the
delivery of time critical data over congested networks. The quality of applications that
are dependent on such time critical data, such as video conferencing, can be severely
and adversely effected by even very small delays in transmission.

Network devices that are in compliance with the IEEE 802.1p standard have the ability
to recognize the priority level of data packets. These devices can also assign a priority
label or tag to packets. Compliant devices can also strip priority tags from packets. This
priority tag determines the packet’s degree of expeditiousness and determines the
queue to which it will be assigned.

Priority tags are given values from 0 to 7 with 0 being assigned to the lowest priority
data and 7 being given to the highest. The highest priority tag 7 is generally only used
for data associated with video or audio applications, which are sensitive to even slight
delays, or for data from specified end users whose data transmissions warrant special
consideration.

The Switch allows you to further tailor how priority tagged data packets are handled on
your network. Using queues to manage priority tagged data allows you to specify its
relative priority to suit the needs of your network. There may be circumstances where it
would be advantageous to group two or more differently tagged packets into the same
queue. Generally however, it is recommended that the highest priority queue, Queue 3,
be reserved for data packets with a priority value of 7. Packets that have not been given
any priority value are placed in Queue 0 and thus given the lowest priority for delivery.

A weighted round robin system is employed on the Switch to determine the rate at
which the queues are emptied of packets. The ratio used for clearing the queues is
15:7:3:1. This means that the highest priority queue, Queue 3, will clear 15 packets for
every 7 packets cleared from Queue 2, 15 packets for every 3 packets from Queue 1, and
15 packets for every 1 packet from Queue 0.

Remember, the priority queue settings on the Switch are for all ports, and all devices
connected to the Switch will be effected. This priority queuing system will be especially
beneficial if your network employs switches with the capability of assigning priority
tags.

VLANs

VLANs are a collection of users or ports grouped together in a secure, autonomous
broadcast and multicast domain. Membership to a VLAN is not rest ricted by a phys ical
location and can be defined across multiple LAN switches.

Port-based VLANs allow a network to be segmented in order to reduce the size of
broadcast domains. All packets entering a VLAN will only be forwarded to the ports
that are members of that VLAN. This even includes Multicast frames and unknown
unicast frames.

21

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Another benefit of VLANs is that you can change the network topology without
physically moving stations or changing cable connections. Stations can be ‘moved’
simply by changing VLAN settings from one VLAN (the sales VLAN, for example) to
another VLAN (the marketing VLAN). This allows VLANs to accommodate network
moves, changes and additions with the utmost flexibility.

VLANs can also provide a level of security to your network. Port-based VLANs allow
you to configure ports to not accept packets from outside of the VLAN.

Port-based VLANs

Port-based VLANs limit traffic that flows into and out of switch ports. Thus, all devices
connected to a port are members of the VLAN(s) the port belongs to, whether there is a
single computer directly connected to a switch, or an entire department.

On port-based VLANs, NICs do not need to be able to identify 802.1Q tags in packet
headers. NICs send and receive normal Ethernet packets. If the packet’s destination
lies on the same segment, communications take place using normal Ethernet protocols.
Even though this is always the case, when the destination for a packet lies on another
switch port, VLAN considerations come into play to decide if the packet gets dropped by
the switch or delivered.

VLAN Segmentation

Take for example a packet that is transmitted by a machine on Port 1 that is a member
of VLAN 2. If the destination lies on another port (found through a normal forwarding
table lookup), the switch then looks to see if the other port (Port 10) is a member of
VLAN 2 (and can therefore receive VLAN 2 packets). If port 10 is not a member of
VLAN 2, then the packet will be dropped by the switch and will not reach it’s
destination. If Port 10 is a member of VLAN 2, the packet will go through. This
selective forwarding feature based on VLAN criteria is how VLANs segment networks.
The key point being that Port 1 will only transmit on VLAN 2.

Network resources such as printers and servers however, can be shared across VLANs.
This is achieved by setting up overlapping VLANs. That is ports can belong to more
than one VLAN groups. Setting VLAN 1 members are port 1,2,3,4 and VLAN 2
members are 1,5,6,7. The Port 1 is belonging to two VLAN groups. The port 8, 9, 10 are
not configured to any VLAN group. This is means port 8,9,10 are the same VLAN group.

VLAN and Trunk Groups

The members of a trunk group have the same VLAN setting. Any VLAN setting on the
members of a trunk group will apply to the other member ports.

Note: In order to use VLAN segmentation in conjunction with port trunk groups, you
must first set the port trunk group(s), and then you may configure VLAN settings. If
you wish to change the port trunk grouping with VLANs already in place, you will need
to reconfigure the VLAN settings after changing the port trunk group settings.

22

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

A

7 T

Standards:

Protocol:
Data Transfer Rate: Ethernet: Fast Ethernet:

Topology:
Network Cables

ECHNICAL SPECIFICATIONS

General

IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet
IEEE802.3z 1000BASE-SX/1000BASE-LX
IEEE802.3ab 1000BASE-T
IEEE 802.3x Flow Control
IEEE 802.1p Priority Queue
ANSI/IEEE Std 802.3 NWay auto-negotiation
CSMA/CD

10 Mbps (half duplex) 100Mbps (half duplex)
20 Mbps (full duplex) 200Mbps (full duplex)

Gigabit Ethernet:
2000 Mbps (full-duplex only)

Star

10BASE-T:

100BASE-TX:

1000BASE-T:

1000BASE-SX:

1000BASE-LX:

UTP Category 3,4,5 (100 meters max.)
EIA/TIA- 568 100-ohm STP (100 meters max.)

UTP Cat. 5 (100 meters max.)
EIA/TIA-568 100-ohm STP (100 meters max.)

UTP Cat. 5e (100 meters max.)
UTP Cat. 5 (100 meters max.)
EIA/TIA-568B 100-ohm STP (100 meters max.)

50/125µm Multimode Fiber-optics (550 meters max.)

62.5/125µm Multimode Fiber-optics (275 meters max.)

50/125µm Multimode Fiber-optics (550 meters max.)

62.5/125µm Multimode Fiber-optics (550 meters max.)

µm

Single-mode Fiber-optics (Infineon Fiber Transceiver 10 km max.)

9
Long Haul Single-mode Fiber-optics (DES-122GB Extension Module, 70

km max.)

23

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

General

Number of Ports:

Media Interface Exchange:

AC input
Power Consumption:

DC Fans:
Operating Temperature:
Storage Temperature:
Humidity:
Dimensions:
Weight:
EMI:

Safety:

DES-1218: 16 x10/100 Mbps MDI-X ports (including port 1x shared MDI-II)
DES-1226: 24 x10/100 Mbps MDI-X ports (including port 1x shared MDI-II)
2 x 1000 Mbps
MDI-II RJ-45 shared with port 1x

Physical and Environmental

100 - 240 VAC, 50 - 60 Hz , 1.A Max,
Internal universal power supply

DES-1218: 21 watts maximum, DES-1226: 26 watts maximum
2 built-in 40 x 40 mm fans
32 ° ~ 122 °F (0 ° ~ 50 °C)

-13 ° ~ 131 °F (-25 ° ~ 55 °C)
5% ~ 95% non-condensing
DES-1218/DES-1226: 441mm x 207mm x 44mm (19” rack mount, 1U)
DES-1218: 2.6 Kg DES-1226: 2.7 Kg

CE Class A, C-Tick Class A, FCC Class A, VCCI Class A, BSMI Class A
UL/CUL ( UL 1950/CSA 950), TUV/GS (EN 60950)

Transmission Method:
RAM Buffer:
MAC Address Table:
Packet Filtering/Forwarding

Rate:

Performance

Store-and-forward
DES-1218: 8 Mb bytes DES-1226: 10 Mb bytes
17 Kb entries per device
1,488,100 pps per port (for 1000Mbps)

148,810 pps per port (for 100Mbps)
14,880 pps per port (for 10Mbps)

24

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

B

8 C

When connecting the Switch to another switch, a bridge or hub, a crossover cable is
necessary. Please review these products for matching cable pin assignment.

The following diagrams and tables show the standard RJ-45 receptacle/connector and
their pin assignments.

ABLES AND

The standard RJ-45 port and conne ctor

C

ONNECTORS

RJ-45 Pin Assignments

Contact MDI-X Port MDI-II Port

1 RD+ (receive) TD+ (transmit)
2 RD- (receive) TD- (transmit)
3 TD+ (transmit) RD+ (receive)
4 Not used Not used
5 Not used Not used
6 TD- (transmit) RD- (receive)
7 Not used Not used
8 Not used Not used

The standard RJ-45 pin assignments

25

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

Straight cable for use with MDI-II to MDI-X con nec tions

With a crossover cable, two pairs of wires are switched at one connector end. Carry out
the following steps to create a customized, crossover twisted-pair cable:

1. Leave one end of the cable as is, with the RJ-45 connector intact. The wiring at
just one end of the cable needs to be modified.

2.

At the other end of the cable, connect wires 1 and 2 to contacts 3 and 6,
respectively. Likewise, connect wires 3 and 6 to contacts 1 and 2. Refer to the
following diagram:

Crossover cable for use with MDI-X to MDI-X and /or MD I-II to MD I-II con nec tion s

26

DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Gui d e

C

9 C

Use the following table to as a guide for the maximum cable lengths.

Standard Media Type

1000BASE-SX

1000BASE-LX

1000BASE-T

100BASE-TX

10BASE-T

50/125µm Multimode Fiber 400 500 Meters
50/125µm Multimode Fiber 500 550 Meters

62.5/125µm Multimode Fiber 160 220 Meters

62.5/125µm Multimode Fiber 200 275 Meters
50/125µm Multimode Fiber 400 550 Meters
50/125µm Multimode Fiber 500 550 Meters

62.5/125µm Multimode Fiber 500 550 Meters

9µm Single-mode Fiber 5,000 Meters
Category 5e UTP Cable

Category 5 UTP Cable
Category 5 UTP Cable

(100Mbps)

Category 3 UTP Cable (10Mbps) 100 Meters

ABLE LENGTHS

MHz/km

Rating

Maximum

Distance

100 Meters

100 Meters

27

Offices

AUSTRALIA D-LINK AUSTRALASIA

Unit 16, 390 Eastern Valley Way, Roseville, NSW 2069, Australia
TEL: [phone] FAX: [phone]
TOLL FREE: 1800-177-100 (Australia), 0800-900900 (New Zealand)
URL: www.dlink.com.au E-MAIL: [e-mail], [e-mail]

CANADA D-LINK CANADA

2180 Winston Park Drive, Oakville, Ontario L6H 5W1 Canada
TEL: [phone] FAX: [phone] BBS: 1-965-279-8732
FREE CALL: 1-800-354-6522 URL: www.dlink.ca

FTP: ftp.dlinknet.com E-MAIL: [e-mail]

CHILE D-LINK SOUTH AMERICA

Isidora Goyenechea #2934 of.702, Las Condes, Santiago, Chile

TEL: [phone] FAX: [phone] URL: www.dlink.cl

E-MAIL: [e-mail], [e-mail]

DENMARK D-LINK DENMARK

Naverland 2, DK-2600 Glostrup, Copenhagen, Denmark
TEL:[phone] FAX:[phone] URL: www.dlink.dk
E-MAIL: [e-mail]

EGYPT D-LINK MIDDLE EAST

7 Assem Ebn Sabet Street, Heliopolis Cairo, Egypt
TEL: [phone] FAX: [phone] URL: www.dlink-me.com
E-MAIL: [e-mail], [e-mail]

FRANCE D-LINK FRANCE

Le Florilege #2, Allee de la Fresnerie
78330 Fontenay Le Fleury France
TEL: [phone] FAX: [phone]
URL: www.dlink-france.fr E-MAIL: [e-mail]

GERMANY D-LINK GERMANY

Bachstrae 22, D-65830 Kriftel Germany
TEL: [phone] FAX: [phone]

URL: www.dlink.de BBS: 49-(0)6192-971199 (Analog) 49-(0)6192-971198 (ISDN)

INFO LINE: 00800-7250-0000 (toll free) HELP LINE: 00800-7250-4000 (toll free)
REPAIR LINE: 00800-7250-8000 E-MAIL: [e-mail],
[e-mail]

INDIA D-LINK INDIA

Plot No.5, Kurla-Bandra Complex Road,
Off Cst Road, Santacruz (E), Bombay - 400 098 India
TEL: [phone] FAX: [phone] URL: www.dlink-india.com
E-MAIL: [e-mail]

ITALY D-LINK ITALY

Via Nino Bonnet No. 6/b, 20154 Milano, Italy
TEL: [phone] FAX: [phone] E-MAIL: [e-mail]
URL: www.dlink.it

JAPAN D-LINK JAPAN

10F, 8-8-15 Nishi-Gotanda, Shinagawa-ku, Tokyo 141 Japan
TEL: [phone] FAX: [phone] URL: www.d-link.co.jp
E-MAIL: [e-mail]

RUSSIA D-LINK RUSSIA

Michurinski Prospekt 49, 117607 Moscow, Russia
TEL: [phone] FAX: [phone]
E-MAIL: [e-mail]

SINGAPORE D-LINK INTERNATIONAL

1 International Business Park, #03-12 The Synergy, Singapore 609917
TEL: [phone] FAX: [phone]
URL: www.dlink-intl.com E-MAIL: [e-mail]

S. AFRICA D-LINK SOUTH AFRICA

Unit 2, Parkside 86 Oak Avenue
Highveld Technopark Centurion, Gauteng, Republic of South Africa

TEL: [phone] FAX: [phone] CELL NO: 0826010806 (Bertus
Moller)
CELL NO: 0826060013 (Attie Pienaar)

E-MAIL: [e-mail], [e-mail]

SWEDEN D-LINK SWEDEN

P.O. Box 15036, S-167 15 Bromma Sweden

TEL: [phone] FAX: [phone] E-MAIL: [e-mail]

URL: www.dlink.se

TAIWAN D-LINK TAIWAN

2F, No. 119 Pao-Chung Road, Hsin-Tien, Taipei, Taiwan, R.O.C.

TEL: [phone] FAX: [phone] URL: www.dlinktw.com.tw

E-MAIL: [e-mail]

U.K. D-LINK EUROPE

D-Link House, 6 Garland Road, Stanmore, London HA7 1DP U.K.

TEL: [phone] FAX: [phone] BBS: 44-20-8235-5511

URL: www.dlink.co.uk E-MAIL: [e-mail]

U.S.A D-LINK U.S.A.

53 Discovery Drive, Irvine, CA 92618 USA

TEL: [phone] FAX: [phone] INFO LINE: 1-800-326-1688

BBS: 1-949-455-1779, 1-949-455-9616

URL: www.dlink.com E-MAIL: [e-mail], [e-mail]

Registration Card

Print, type or use block letters.

Your name: Mr./Ms__________________________________________________________________________
Organization: ____________________________________________Dept.______________________________
Your title at organization:_____________________________________________________________________
Telephone:_________________________________________ Fax:___________________________________
Organization's full address:___________________________________________________________________
_________________________________________________________________________________________
Country:__________________________________________________________________________________
Date of purchase (Month/Day/Year):____________________________________________________________

Product

Model

(* Applies to adapters only)

Product was purchased from:

Reseller's name:____________________________________________________________________________
Telephone:_________________________________________ Fax:___________________________________
Reseller's full address:_______________________________________________________________________
_________________________________________________________________________________________

Answers to the following questions help us to support your product:

1. Where and how will the product primarily be used?

!Home !Office !Travel !Company Business !Home Business !Personal Use

2. How many employees work at installation site?

!1 employee !2-9 !10-49 !50-99 !100-499 !500-999 !1000 or more

3. What network protocol(s) does your organization use ?

!XNS/IPX !TCP/IP !DECnet !Others_______________________________________________________

4. What network operating system(s) does your organization use ?

!D-Link LANsmart !Novell NetWare !NetWare Lite !SCO Unix/Xenix !PC NFS !3Com 3+Open
!Banyan Vines !DECnet Pathwork !Windows NT !Windows NTAS !Windows '95
!Others________________________________________________________________________________

5. What network management program does your organization use ?

!D-View !HP OpenView/Windows !HP OpenView/Unix !SunNet Manager !Novell NMS
!NetView 6000 !Others___________________________________________________________________

6. What network medium/media does your organization use ?

!Fiber-optics !Thick coax Ethernet !Thin coax Ethernet !10BASE-T UTP/STP
!100BASE-TX !100BASE-T4 !100VGAnyLAN !Others_________________________________________

7. What applications are used on your network?

!Desktop publishing !Spreadsheet !Word processing !CAD/CAM
!Database management !Accounting !Others_________________________________________________

8. What category best describes your company?

!Aerospace !Engineering !Education !Finance !Hospital !Legal !Insurance/Real Estate

!Manufacturing

!Retail/Chainstore/Wholesale !Government !Transportation/Utilities/Communication !VAR
!System house/company !Other____________________________________________________________

9. Would you recommend your D-Link product to a friend?

!Yes !No !Don't know yet

10.Your comments on this product? _________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________

Product Serial No. * Product installed in type of

computer (e.g., Compaq 486)

* Product installed in computer serial No.