D-link DES-815 User Manual

DES-815

10/100 Fast Ethernet Switch

User’s Guide

Rev. 02 (Aug., 1997)

6DES815...02

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 ist 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 am 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 Schlag 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 Stromnetz 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 Ersatzteilen 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.

WARRANTIES EXCLUSIVE

IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE
CUSTOMER'S SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, REPAIR OR
REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE
AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, EITHER IN
FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. D­LINK NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT
ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION
MAINTENANCE OR USE OF D-LINK'S PRODUCTS
D-LINK SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING 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,
NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO
REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING OR OTHER HAZARD.

LIMITATION OF LIABILITY

IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF
DATA, LOSS OF PROFITS, COST OF COVER OR OTHER INCIDENTAL, CONSEQUENTIAL
OR INDIRECT DAMAGES ARISING OUT THE INSTALLATION, MAINTENANCE, USE,
PERFORMANCE, FAILURE 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 POSSIBILITY 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.

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 lengths of time from the date of purchase from
D-Link or its Authorized Reseller:

Product Type Warranty Period
Managed Switch Three Years*
Unmanaged Switch Lifetime*
*Power supply and fans in these devices One year

If a product does not operate as warranted during the applicable warranty period, D-Link shall,
at its option and expense, (1) repair the defective product or part, (2) deliver to Customer an
equivalent product or part to replace the defective item. All products that are replaced will
become the property of D-Link. Replacement products may be new or reconditioned. Any
replaced or repaired product or part has a ninety (90) day warranty or the remainder of the
initial warranty period, whichever is longer.
D-Link shall not be responsible for any software, firmware, information, or memory data of
Customer contained in, stored on, or integrated with any products returned to D-Link pursuant
to any warranty.
All products with lifetime warranty have a standard five-year warranty. To qualify for lifetime
warranty, the enclosed Product Registration Card must be completed and returned to D-Link
within ninety (90) days of purchase.
Warranty service may be obtained by contacting a D-Link office within the applicable warranty
period for a Return Material Authorization (RMA) number. If a Registration Card has not been
previously sent, proof of purchase, such as a copy of the dated purchase invoice, must be
provided. Once an RMA number is issued, the defective product must be shipped back to D­Link prepaid, insured and wrapped in the original or similar shipping package to ensure that it
will not be damaged during shipment. When returning the defective product to D-Link for
service, the RMA number must be marked on the outside of the shipping package. Any product
returned without an RMA number shall be rejected and sent back to the Customer, and D-Link
reserves the right to have Customer bear the cost of sending back such products. A service
charge may or may not be levied to Customer by D-Link. To find out if a service charge is
levied or not, and the charged amount, read the RMA that is returned to Customer, or ask the
D-Link office when an RMA is requested.

D-Link Offices to Contact for Warranty Service:

To mail your Registration Card, or to obtain an RMA number or a warranty service, see the
following addresses:

In North, Central and South America:

D-Link Systems Inc.
5 Musick, Irvine CA 92618
Tel. [phone] Fax. [phone]

In Europe and Israel

D-Link Europe
D-Link House, 6 Garland Road, Stanmore, London HA7 1DP, U.K.
Tel. [phone] Fax. [phone]

In the Middle East (except Israel), Asia, Oceania and Africa:

D-Link Corporation
No. 233-2, 2nd F. Pao Chiao Road, Hsin Tien Taipei, Taiwan
Tel. [phone] Fax. [phone]

Trademarks

Copyright 1997 D-Link Corporation.
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 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.

FCC Warning

This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used
in accordance with this user’s guide, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the
interference at his own expense.

CE Mark Warning

This is a Class A product. In a domestic environment, this
product may cause radio interference in which case the user may
be required to take adequate measures.

10/100 Fast Ethernet Switch User’s Guide

TABLE OF CONTENTS

PREFACE .........................................................................ix

Purpose.......................................................................................ix

Audience.....................................................................................ix

Manual Organization.................................................................. x

1 OVERVIEW.......................................................................1

Introduction ................................................................................1

100Mbps Fast Ethernet Introduction..........................................2

100BASE-TX Technology Overview............................................3

Cables and Connectors.......................................................................3

Topology.............................................................................................3

Network .............................................................................................4

Hubs................................................................................................... 4

Connectivity Rules.............................................................................5

Switching Technology.................................................................5

Benefits of Switching.........................................................................6

10/100 Switching Technology.............................................................6

Product Features......................................................................... 7

Packing List ................................................................................8

Front Panel..................................................................................8

Ports................................................................................................... 8

LED Indicators.................................................................................11

Rear Panel................................................................................. 13

Duplex Mode Switch........................................................................14

Preface vii

2 INSTALLATION ................................................................15

Installation Site ........................................................................15

Installing on a Desktop or Shelf ...............................................16

Installing in a Rack ..................................................................17

Connecting Power...................................................................... 18

Network Connections.................................................................18

10/100Mbps Ports ............................................................................ 18

10Mbps Ports...................................................................................19

Cable Types ......................................................................................19

Setting the Duplex Mode...........................................................20

Network Configuration Examples .............................................21

Fast Ethernet Server Connection ....................................................22

LAN Microsegmentation..................................................................23

A SPECIFICATIONS ............................................................25

B CONNECTOR PINOUTS....................................................27

RJ-45 Connectors......................................................................27

AUI Transceiver Connector.......................................................28

MII Transceiver Connector .......................................................29

1

viii Preface

10/100 Fast Ethernet Switch User’s Guide

PREFACE

Congratulations on your purchase of the 10/100 Fast Ethernet
Switch. This device integrates 100Mbps Fast Ethernet and
10Mbps Ethernet network capabilities in a highly flexible rack
mountable package.

Purpose

This manual discusses how to install and use the 10/100 Fast
Ethernet Switch.

Audience

This manual is intended for network administrators with:

• Background in LAN bridge concepts.

• Understanding of IEEE 802.3 Ethernet and 100BASE-TX Fast

Ethernet networking concepts.

• Understanding of how to install local area networks (LANs).

Preface ix

Manual Organization

Chapter 1 Overview

Describes the product, its features, packing list, and the front and
rear panels.

Chapter 2 Installation

Provides detailed instructions on installing the 10/100 Fast
Ethernet Switch. Chapter 2 includes information on table and
rack mounted installation, connecting power, network
connections, setting the communications mode and cascade, and
provides some network configuration examples.

Appendix A Specifications

Lists the technical specifications of the product.

Appendix B Connector Pinouts

Describes the connector pinouts of the 10/100 Fast Ethernet
Switch ports.

x Preface

10/100 Fast Ethernet Switch User’s Guide

11

2 OVERVIEW

Introduction

The DES-815 Fast Ethernet Switch is ideal for network managers
who want to boost workgroup performance easily by micro­segmenting a 10Mbps LAN while adding 100Mbps links, or it is
excellently suited to provide a dedicated Fast Ethernet connection
to a key network server or station in an existing 10Mbps network.

The switch integrates 100Mbps Fast Ethernet with 10Mbps
Ethernet networks seamlessly. The speed migration design will
bridge high bandwidth Fast Ethernet network segments to
traditional 10Mbps Ethernet network segments quickly and
simply.

The DES-815 complies with IEEE802.3u, 100BASE-TX,
IEEE802.3 and 10BASE-T standards. It has 12 10Mbps twisted­pair ports, two 10/100Mbps twisted-pair ports, and one MII port.
The DES-815 provides both store-and-forward and cut-through
passing schemes, automatically selected to provide the best
network performance. Filtering and forwarding rates for the
switch run at wire-speed, reducing latency within and across
segments.

Overview 1

The Switch provides an easy, affordable, high-performance,
seamless, and standard-based migration path to a 100BASE-TX
LAN while preserving your initial investment and use of 10Mbps
Ethernet LANs.

100Mbps Fast Ethernet Introduction

Computers today have become increasingly powerful, with the
capability to accommodate very sophisticated uses such as
multimedia applications, video-conferencing, and CAD/CAM. To
utilize these technologically advanced applications more
efficiently, there is also a growing demand for faster networks that
can handle heavy network traffic.

Recognizing this need for greater bandwidth and lower latency, a
variety of technologies such as FDDI, ATM, and 100Mbps Fast
Ethernet have been adopted by many vendors. 100Mbps Fast
Ethernet technology stands out as the most inexpensive and
smoothest migration path for existing 10Mbps Ethernet users.

100Mbps Fast Ethernet is a relatively new 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 CSMA/CD Ethernet protocol.
Since 100Mbps Fast Ethernet is compatible with all 10Mbps
Ethernet environments, it provides a straight-forward upgrade
without wasting the company’s existing investment in hardware,
software, and trained personnel.

2 Overview

10/100 Fast Ethernet Switch User’s Guide

100BASE-TX Technology Overview

Cables and Connectors

Category 5 unshielded twisted-pair (UTP) cables are supported.
UTP Category 5 cable uses the same RJ-45 connector used with
10BASE-T, wired in the same configuration. Please note that the
punch-down blocks in the wiring closet must also be Category 5
certified. Where these blocks do not meet the standard, an
upgrade is necessary.

Topology

A Fast Ethernet workgroup is configured in a star topology and is
built around a maximum of two repeaters. Each workgroup forms
a separate LAN (also known as a segment or collision domain),
and these workgroups can be easily interconnected through
switches, bridges, or routers to form one LAN large enough to
encompass a high-rise building or campus environment. Recent
innovations in LAN hub technology such as stackable hubs,
coupled with the decreasing cost of switches, bridges, and routers,
allow the design of low-cost, efficient Fast Ethernet workgroups
and enterprise LANs.

The following factors strongly influence the architecture of Fast
Ethernet networks:

• The EIA/TIA 568 Wiring Standard imposes a 100 meter

limit on horizontal runs of twisted-pair cables; that is,
connections from the wiring closet to the end-station.

• Fast Ethernet’s increased operational speed reduces the

maximum distance between all elements of the LAN (see
below).

Overview

3

• The EIA/TIA 568 Wiring Standard does not support the use

of coaxial cables for horizontal wiring.

Network

Network diameter, which is the distance between two end-stations
in the same collision domain, is the primary difference between
traditional Ethernet and Fast Ethernet. Due to the increased
speed in Fast Ethernet and adherence to the EIA/TIA 568 wiring
rules, the network diameter of a Fast Ethernet collision domain is
limited to 205 meters; in contrast, the maximum 10BASE-T
Ethernet collision domain diameter can be up to 2500 meters.

Hubs

Unlike 10BASE-T hubs which are all functionally identical, Fast
Ethernet hubs are divided into two distinct types: Class I and
Class II. A Class I hub repeats all incoming signals on one port to
the other ports by first translating them to digital signals and
then retranslating them back to line signals. These translations
are necessary when connecting various network media to the
same collision domain, such as when combining two wire-pair
100BASE-TX media with four wire-pair 100BASE-T4 media. Only
one Class I hub can exist within the same collision domain, thus
this type of hub cannot be cascaded. A Class II repeater, on the
other hand, immediately repeats all incoming line signals on one
port to the other ports; no translations are performed. This type of
hub connects identical media to the same collision domain; for
example, TX to TX. At most, two Class II hubs can exist within
the same collision domain. The cable used to cascade these hubs is
called an inter-repeater link (IRL).

As mentioned earlier, stackable hubs can be used to increase the
number of available nodes in a collision domain. An entire hub
stack counts as a single repeater.

4 Overview

10/100 Fast Ethernet Switch User’s Guide

Connectivity Rules

• The maximum length of a twisted-pair segment (that is,

distance between a port in the hub to a single-address
network device such as a PC, server, or LAN switch) is 100
meters.

• The maximum diameter in a collision domain is about 205

meters using two Class II hubs (hub stacks) and 200 meters
using one Class I hub.

• Between any two end-stations in a collision domain, there

may be up to three segments and two Class II hubs or two
segments and one Class I hub.

Switching Technology

Switching is fast becoming the industry standard for pushing the
limits of existing Ethernet networks. A switch bridges Ethernet
packets between Ethernet and Fast Ethernet LAN segments at
the MAC address level of the Ethernet protocol.

The difference between switched Ethernet (10Mbps, 100Mbps, or
both) and traditional Ethernet is analogous to the difference
between a private phone line and a party line. With switched
Ethernet, each workgroup has a “private line” so that transmitted
packets don’t have to wait as long to gain access to the network.
When connected to a switched port, each Ethernet segment has
full “wire-speed” access, so a switch effectively divides a single
Ethernet LAN into bridged multiple LAN segments. Each
segment can support a workgroup or even provide a dedicated
connection for a key workstation or server. The result of dividing
an Ethernet LAN into multiple segments is a multiplication of
internal bandwidth available to all stations on the LAN and a
reduction in latency rates during peak-use periods.

Overview

5

Benefits of Switching

Ethernet switching technology drastically increases the total
bandwidth of a LAN. It also provides configuration flexibility to
local workgroups which allows the network administrator to
better control how network resources are distributed against
network load. Switching helps reduce the congestion problems
inherent in the contention-oriented CSMA/CD protocol, thereby
improving network response during high utilization periods.

Also, currently popular distributed client/server applications often
require higher bandwidth and tighter client-to-server integration.
Legacy 10Mbps Ethernet often is unable to provide a sufficiently
sophisticated platform for users to be able to take full advantage of
such client/server applications.

Fast Ethernet switching not only satisfies both technical and
business needs, it also preserves the current investment in the
huge 10BASE-T Ethernet installed base. Compatibility with
10Mbps Ethernet ensures that users will be able to migrate to
Fast Ethernet at a pace appropriate to their installation and
needs.

10/100 Switching Technology

An integral extension of Fast Ethernet, 10/100 switching provides
not only a 100Mbps high-speed connection for carrying aggregated
10Mbps traffic, it also handles the necessary conversion of MAC
between 10BASE-T and 100BASE-TX. Combining Fast Ethernet
and switching technologies provides both bandwidth for local
workgroups and a high-speed link to carry local traffic elsewhere
in the network.

6 Overview

10/100 Fast Ethernet Switch User’s Guide

Product Features

The 10/100 Fast Ethernet Switch has the following key features:

• Ports: 12 10Mbps, three 10/100Mbps.

• High-speed uplink port for connecting to a higher tier switch

or other device.

• Dynamic buffer allocation to allow network load balance and

prevent packet loss due to congestion.

• Auto polarity correction for all twisted pair ports.

• AUI and MII external transceiver connectors provide

flexibility in choice of network media.

• Full-duplex and half-duplex capability on all ports with each

user-configurable through the Duplex Mode Switch on the
rear panel.

• Flexibility of application: from segmentation of a large LAN to

client-server maximization to dedicated connections for high­priority single users.

• Support for IEEE 802.3, 10BASE-2, 10BASE-T, IEEE 802.3u

and 100BASE-TX standards.

• Εxtensive LED indicators to facilitate troubleshooting and

monitoring of the product’s operating status.

• Auto-selected fast store-and-forward and fragment-free cut-

through passing schemes provide low latency.

• Compatibility with standard Ethernet applications,

internetworking systems and client-side adapters to minimize
infrastructure changes and costs.

Overview

7

Packing List

Unpack the 10/100 Fast Ethernet Switch shipping carton and
check for the listed items below. If any items are missing or
damaged, notify your authorized reseller immediately.

• The 10/100 Fast Ethernet Switch

• This User's Guide

• An AC Power Cord

• Two Rack Mount Brackets and screws

• Four adhesive-backed rubber feet

Front Panel

The 10/100 Fast Ethernet Switch front panel includes network
connectors and LED indicators for ease-of-use.

Figure 1 10/100 Fast Ethernet Switch Front Panel

Ports

The product comes with twisted-pair ports. These ports can be
used to connect to individual stations in need of faster access, to

8 Overview

10/100 Fast Ethernet Switch User’s Guide

segment heavily utilized LANs, and/or to provide higher
bandwidth access to a key server in a client-server environment.

10Mbps Ports

The 10Mbps twisted-pair ports are standard RJ-45 connectors for
use with unshielded or shielded twisted-pair (UTP/STP) wiring.
The 10Mbps ports operate at an user-selectable effective speed of
10Mbps for half-duplex mode or 20Mbps for full-duplex mode. In
either mode, the twisted-pair connector can operate over 100
meters of Category 3, 4, or 5 UTP/STP cable.

Possible uses for the 10Mbps switch ports:

• Segment an existing LAN to improve bandwidth utilization.

• Connect single users either to provide power users with

greater access and thus speed, or multiple users for high
bandwidth access to a shared network server.

• Uplink connections for lower-tier switches.

10/100Mbps Ports

The 10/100Mbps twisted-pair ports are standard RJ-45 connectors
for use with unshielded or shielded twisted-pair (UTP/STP)
wiring. These ports are auto-negotiating between 10Mbps and
100Mbps, which means that they detect the speed of devices
connected to them and auto-configure to run at that speed. The
10/100Mbps ports also operate in half-duplex mode or full-duplex
mode at either speed. In either duplex mode, the twisted-pair
ports can operate over 100 meters of Category 5 UTP or STP cable.

Possible uses for the 10/100Mbps switch ports:

Overview

9

• Add Fast Ethernet segments to an existing 10Mbps LAN.

• Provide a dedicated 100Mbps Ethernet connection for a shared

LAN server in a 10Mbps LAN.

• Uplink to a higher-tier hub or switch.

Table 1-1: Port and Cable Specifications

Port Connector Half/Full

Duplex

10Mbps

10/100Mbps

RJ-45 10/20Mbps 100m,

RJ-45 10/20Mbps

100/200 Mbps

Cable

Category 3,4,
or 5 UTP/STP

100m,
Category 5
UTP/STP

Uplink Port

The uplink port is used for higher-tier connections to more
advanced switches or other network devices. Please note that if
you are using the uplink port, you will be unable to use port one
as these two ports are logically linked.

Note: A crossover cable must be used when connecting

from the uplink of another switch or a hub to the
uplink port on the 10/100 Fast Ethernet Switch.

10 Overview

10/100 Fast Ethernet Switch User’s Guide

AUI Transceiver Connector

The AUI transceiver connector is a 10Mbps port for connecting a
thin or thick Ethernet segment via a transceiver. Please note that
this connector is logically related to twisted-pair Port 3 so they
cannot be used simultaneously, and the twisted-pair port has
priority over the AUI connector. Also, the AUI port only operates
at half duplex. Pinouts for the AUI connector are listed in
Appendix B.

MII Transceiver Connector

The MII transceiver connector is a 10/100Mbps port for connecting
a fiber optic or additional Fast Ethernet segment via a transceiver.
The MII connector, like ports 1 and 2, can auto-detect the speed of
a device connected and auto-adjust to operate at either 10Mbps or
100Mbps. Pinouts for this connector are listed in Appendix B.

LED Indicators

The 10/100 Fast Ethernet Switch has extensive LED indicators to
facilitate monitoring and troubleshooting. They include a Power
LED, a System Load meter, and Status LEDs for all ports. The
Status LEDs have indicators that report on Link, Duplex, Activity,
Collision, and 100Mbps Operation states. There are also AUI and
MII LED indicators.

Overview

11

Figure 2 LED Indicators

The following section describes these indicators in detail.

• Power LED

This indicator is green when power is supplied to the device.

The Power LED lights when you connect the power cable to
the power receptacle at the rear of the device, and then plug it
in to a power outlet.

• Link/Act LED

This indicator is green when the respective port is properly

connected to a powered-on device and blinks green when
packets are being transmitted or received.

• FDX/Collision (Col) LED

This indicator is green when the respective port is operating in

full-duplex mode. Otherwise it is off for half-duplex operation.
This indicator blinks yellow when there are collisions
occurring on the respective port.

• System Load LED Meter

This LED meter indicates the current system load (from “Low”

to “High”). The meter functions to indicate that the switch is
currently operating and at what level of aggregated traffic.

12 Overview

10/100 Fast Ethernet Switch User’s Guide

• AUI LED

This indicator is green when the AUI transceiver port is

connected to a 10Mbps Ethernet device via an AUI
transceiver.

• MII LED

These indicators for Link/Act and FDX/Col work just like their

counterparts for the other ports (see above). They are only lit
and active when an MII transceiver is connected to the switch.

• 100M LEDs

These indicators are green when port 1, port 2, or the MII

connector are connected to a device operating at 100Mbps. If
any of these LEDs are off, then the port it corresponds to is
either not connected or is connected to a device operating at
10Mbps.

Rear Panel

The rear panel of the 10/100 Fast Ethernet Switch includes the
power cable connector and the Duplex Mode Switch.

Figure 3 Rear Panel

Overview

13

Duplex Mode Switch

The 10/100 Fast Ethernet Switch must be set to the proper duplex
mode for all ports. The switch can be set to auto-detect the duplex
mode for ports 1 and 2, and for the MII connector; All other ports
must be set to either full or half duplex.

To change the duplex mode, change the Duplex Mode DIP switch
setting on the back of the 10/100 Fast Ethernet Switch. On the
DIP switch, for ports 1, 2, and the MII connector, down is auto­detect, up is full-duplex. For ports 1 and 2 (the 10/100Mbps
variable speed ports), “Auto” means that the appropriate duplex
mode is set by the hub according to the capabilities of the device
connected, and “FDX” manually sets the ports to full duplex mode.
Regardless of the duplex mode setting, the speed setting of ports 1
and 2 is automatically detected.

For all other ports up is full duplex, down is half duplex, and the
switch numbers correspond with the port numbers. Note that it is
not necessary to turn off the device when changing the duplex
mode setting.

14 Overview

10/100 Fast Ethernet Switch User’s Guide

22

3 INSTALLATION

This chapter describes the installation procedure for the 10/100
Fast Ethernet Switch. The chapter includes information on
installation locations, connecting power, connecting network
cables, setting the port duplex mode, and has some network
configuration examples.

Installation Site

You have the option to install the product on a table or mount it in
a standard network rack. When installing, choose a sturdy, level
surface in a ventilated area that is dust free and away from heat
vents, warm air exhaust from other devices and direct sunlight.
Avoid proximity to large electric motors or other electromagnetic
equipment.

Observe the following guidelines when choosing a location for the
10/100 Fast Ethernet Switch:

• The surface must support at least 3.0 kg (6.5 lbs).

• Air temperature should range from 32° to 122° F (0° to 50° C).

• Humidity should be less than 90%, non-condensing.

Installation 15

• Site should not exceed the electromagnetic field (RFC)

standards for IEC 801-3, Level 2 (3V/M) field strength.

• The power outlet should be within 6 feet of the device.

For a detailed list of the product’s technical specifications, refer to
Appendix A, Specifications.

Installing on a Desktop or Shelf

When installing the product on a table you need to attach the
rubber feet included with the device. Attach these cushioning feet
on the bottom at each corner of the device. Allow enough
ventilation space between the device and the objects around it.

Figure 4 Installing the 10/100 Fast Ethernet Switch on a Table

16 Installation

10/100 Fast Ethernet Switch User’s Guide

Installing in a Rack

The switch can be mounted in an EIA standard-size, 19-inch rack,
which can be placed in a wiring closet with other equipment.
Attach the mounting brackets on the switch’s front panel (one on
each side), and secure them with the screws provided.

Then, use the screws provided with the equipment rack to mount
the switch in the rack.

Figure 5A & 5B Installing the 10/100 Fast Ethernet Switch in a

Rack

Installation

17

Connecting Power

Power is supplied to the 10/100 Fast Ethernet Switch through an
AC power cord. The AC power input voltage ranges from 100 to
240 VAC. A power cable is included with the device.

Figure 6 Connecting Power

Network Connections

If any port on the 10/100 Fast Ethernet Switch is set for full­duplex operation, the device (or LAN) connected to that port
should also be set for full-duplex operation. The following sections
discuss the requirements for each operating mode.

10/100Mbps Ports

Port 1 and port 2 are variable-speed ports and require Category 5
unshielded twisted-pair or shielded twisted-pair (UTP/STP) cable
to run at 100Mbps. The attached station must be within 100
meters of the 10/100 Fast Ethernet Switch. When connecting a

18 Installation

10/100 Fast Ethernet Switch User’s Guide

workstation or a server running at 100Mbps, a standard
100BASE-TX adapter must be installed. When running at
10Mbps, ports 1 and 2 are functionally identical to the 10Mbps
ports described below.

The MII transceiver connector is also a 10/100Mbps port.
External transceivers for a standard Ethernet, Fast Ethernet or a
fiber optic connection will work with the MII connector.

Note: D-Link also provides the following media

converters that can be used with the MII
connector on this Switch: DFE-853 MII-TX, DFE­854 MII-FX, DFE-855 TX-FX. The 854 and 855
converters include fiber optic capabilities and
can use fiber optic cables up to 2 km long.

10Mbps Ports

These ports require Category 3, 4, or 5 unshielded twisted-pair or
shielded twisted-pair (UTP/STP) cable. They can be used to
connect to individual workstations, servers or other 10BASE-T
devices. The attached station must be within 100 meters of the
10/100 Fast Ethernet Switch. When connecting a workstation or a
server, a standard 10BASE-T adapter must be installed.

The AUI transceiver connector is also a 10Mbps port. External
transceivers for a standard Ethernet connection (thin or thick)
will work with the AUI connector.

Cable Types

Under most conditions, the ports on the 10/100 Fast Ethernet
Switch may use normal straight-through cables. Some
circumstances, however, may require the use of crossover cables

Installation

19

(i.e., cables in which the twisted-pair outputs have been crossed).
See Appendix B for more information on crossover cable pinouts.
The table below describes when to use which cable type.

Table 2-1: Using Straight-Through and Crossover Cables

SWITCH
PORT USED

Normal Server (or PC) Straight-Through (||)

Uplink Server (or PC) Crossover (X)

DEVICE PORT

TYPE

Switch
or Hub

Switch
or Hub

Non­Uplink

Uplink Straight-Through (||)

Non­Uplink

Uplink Crossover (X)

CABLE TO USE

Crossover (X)

Straight-Through (||)

Setting the Duplex Mode

Each port of the device can be set for half-duplex or full-duplex
operation. The two 10/100Mbps ports and the MII connector can
be set to either full-duplex or auto-detect duplex mode. At half­duplex operation, packet transmission and reception do not occur
simultaneously, thus communication speed is limited to 100Mbps
using 100BASE-TX mode and 10Mbps using 10BASE-T mode. At
full-duplex operation, packet transmission and reception occur
simultaneously, thus communication speed is doubled to 200Mbps
using 100BASE-TX mode and 20Mbps using 10BASE-T mode.
Full-duplex operation can be used on links between the 10/100

20 Installation

10/100 Fast Ethernet Switch User’s Guide

Fast Ethernet Switch and any device that supports full-duplex
operation.

Set the duplex mode through the duplex mode switch at the rear
of the device. To set a port to full-duplex operation, slide the
corresponding duplex switch up. To set for half-duplex, set the
duplex switch down. To set port 1, port 2, or the MII connector to
auto duplex mode detect, set the corresponding switch down.

Figure 7 Setting the Duplex Mode

Network Configuration Examples

This section provides sample configurations showing ways you
might use the 10/100 Fast Ethernet Switch.

Installation

21

Fast Ethernet Server Connection

The 10/100 Fast Ethernet Switch is an ideal device for connecting
a dedicated server via a 100Mbps line to a 10Mbps network.
Increasing the bandwidth speed of a server connection can provide
significant improvements in network performance.

Figure 8 Fast Ethernet Connection for a Server

22 Installation

10/100 Fast Ethernet Switch User’s Guide

LAN Microsegmentation

Perhaps the principal purpose for the 10/100 Fast Ethernet Switch
is to microsegment an existing LAN to improve network latency
rates and increase overall performance. The 100Mbps ports on
the switch can be used to connect those segments which require
greater throughput.

Figure 9 Microsegmenting a LAN and Adding 100Mbps

Segments

Installation

23

10/100 Fast Ethernet Switch User’s Guide

AA

4 SPECIFICATIONS

This appendix lists the technical specifications for the device.

Standards
Compliance

100Mbps
(100BASE-TX)

10Mbps
(10BASE-T)

Performance

LED Indicators

Dimensions

10BASE-2, 10BASE-T, IEEE 802.3,
100BASE-TX, IEEE 802.3u

RJ-45, Full or Half Duplex –
100/200Mbps

RJ-45, Full or Half Duplex –
10/20Mbps

Filtering Rate:

• 10Mbps Port – 14880 pps

• 100Mbps Port – 148800 pps

Forwarding Rate:

• 10Mbps Port – 14880 pps

• 100Mbps Port – 148800 pps

Power, AUI, MII, Link/Act, FDX/Col,
100M, System Load Meter

441 x 207 x 45 mm (W x D x H)

Specifications 25

Weight

3.0 kg/6.5 lbs

Power Input
Power

Consumption
Operating

Temperature
Humidity
Altitude
Emissions

Safety

100 ~ 240 VAC, 50/60Hz, 1A
40 Watt (maximum)

32° ~ 122° F (0° ~ 50° C)

5 ~ 90%, Storage
10,000 ft (3048 m)
FCC part 15 Class A, VCCI-1, CE

Mark
UL, CSA and TUV/GS

26 Specifications

10/100 Fast Ethernet Switch User’s Guide

BB

5 CONNECTOR PINOUTS

This appendix describes the connector pinouts including those for:

• RJ-45 ports (100BASE-TX and 10BASE-T);

• AUI transceiver connector;

• MII transceiver connector.

RJ-45 Connectors

Figure B-1 RJ-45 Connector

The above figure shows the arrangements of the pins, while Table
B-1 lists the pinouts.

Connector Pinouts 27

Table B-1: RJ-45 Connector Pinouts

RJ-45 Connector Pinouts

Pin MDI Signal

1 TD+ (Transmit)
2 TD- (Transmit)
3 RD+ (Receive)
4 NC
5 NC
6 RD- (Receive)
7 NC
8 NC

A sketch for crossover cable pinouts is shown in the following
figure.

Figure B-2 Crossover Cable

AUI Transceiver Connector

The following table gives the pinouts for the AUI connector.

Table B-2: AUI Connector Pinouts

Pin Circuit Use
1 CI-S Control IN Circuit Shield

28 Connector Pinouts

10/100 Fast Ethernet Switch User’s Guide

2 CI-A Control IN Circuit A
3 DO-A Data OUT Circuit A
4 DI-S Data IN Circuit Shield
5 DI-A Data IN Circuit A
6 VC Voltage Common
7 CO-A Control OUT Circuit A
8 CO-S Control OUT Circuit Shield
9 CI-B Control IN Circuit B
10 DO-B Data OUT Circuit B
11 DO-S Data OUT Circuit Shield
12 DI-B Data IN Circuit B
13 VP Voltage Plus
14 VS Voltage Shield
15 CO-B Control OUT Circuit B

MII Transceiver Connector

The MII transceiver connector allows users to connect most MII
compatible transceivers to the switch. Any device connected must
use a physical-layer address that falls within the 00h-10h range.
The following table gives the pinouts for the MII connector.

Connector Pinouts 29

Table B-3: MII Connector Pinouts

PIN No. SIGNAL PIN No. SIGNAL
1 +5V 18 COL
2 MDIO 19 CRS
3 MDC 20 +5V
4 RXD3 21 +5V
5 RXD2 22 COMMON
6 RXD1 23 COMMON
7 RXD0 24 COMMON
8 RX_DV 25 COMMON
9 RX_CLK 26 COMMON
10 RX_ER 27 COMMON
11 TX_ER 28 COMMON
12 TX_CLK 29 COMMON
13 TX_EN 30 COMMON
14 TXD0 31 COMMON
15 TXD1 32 COMMON
16 TXD2 33 COMMON
17 TXD3 34 COMMON

30 Connector Pinouts

10/100 Fast Ethernet Switch User’s Guide

35 COMMON 38 COMMON
36 COMMON 39 COMMON
37 COMMON 40 +5V

6

31

Offices

U.S.A. D-LINK SYSTEMS, INC.

CANADA D-LINK CANADA, INC.

U.K. D-LINK (EUROPE) LTD.

GERMANY D-LINK (DEUTSCHLAND) GMBH I.G.

FRANCE D-LINK FRANCE

SWEDEN D-LINK A/B

DENMARK D-LINK DENMARK

SINGAPORE D-LINK SINGAPORE PTE.LTD.

AUSTRALIA D-LINK AUSTRALIA PTY.LTD.

CHINA D-LINK BEIJING

JAPAN D-LINK TOKYO

INDIA D-LINK (INDIA) PVT. LTD.

TAIWAN D-LINK TAIWAN

5 Musick Irvine, CA 92618 USA
TEL: [phone] FAX: [phone]

2180 Dunwin Drive, Unit # 6,
Mississauga Ontario, L5L 5M8, Canada
TEL: [phone] FAX: [phone]

D-Link House, 6 Garland Road, Stanmore, London HA7 1DP U.K.
TEL: [phone] FAX: [phone]

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

Le FLORILEGE #2, Allee de la Fresnerie
78330 Fontenay Le Fleury France
TEL: [phone] FAX: [phone]

World Trade Center P. O. Box 70396, 107 24 Stockholm Sweden
TEL: [phone] FAX: [phone]

Naverland 2 DK-2600 Glostrup Copenhagen, Denmark
TEL:[phone] FAX:[phone]

77 Science Park Drive #03-03 CINTECH III,
Singapore Science Park Singapore 118256
EL : 65-7746233 FAX: [phone]

Unit 16, 390 Eastern Valley Way Roseville, NSW 2069 Australia
TEL: [phone] FAX: [phone]

15th Floor, Science & Technology Tower
No. 11, Baishiqiao Road, Haidian District, Beijing 100081 China
TEL: [phone] FAX: [phone]

5F, 8-8-15 Nishigotanda, Shinagawa-ku Tokyo 141 Japan
TEL: [phone] FAX: [phone]

Bombay Office : Plot No.5, Kurla-Bandra Complex Rd.
Off Cst Rd., Santacruz (E) Bombay - 400 098 India
TEL: [phone] FAX: [phone]

2F, No.233-2 Pao-Chiao Rd, Hsin-Tien, Taipei,Taiwan, R.O.C.
TEL: [phone] FAX: [phone]

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 Product Serial

(* 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?

oHome oOffice oTravel oCompany Business oHome Business oPersonal Use

2. How many employees work at installation site?

o1 employee o2-9 o10-49 o50-99 o100-499 o500-999 o1000 or more

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

oXNS/IPX oTCP/IP oDECnet oOthers_____________________________

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

oD-Link LANsmart oNovell NetWare oNetWare Lite oSCO Unix/Xenix oPC NFS o3Com 3+Open
oBanyan Vines oDECnet Pathwork oWindows NT oWindows NTAS oWindows '95
oOthers__________________________________________

5. What network management program does your organization use ?

oD-View oHP OpenView/Windows oHP OpenView/Unix oSunNet Manager oNovell NMS
oNetView 6000 oOthers________________________________________

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

oFiber-optics oThick coax Ethernet oThin coax Ethernet o10BASE-T UTP/STP
o100BASE-TX o100BASE-T4 o100VGAnyLAN oOthers_________________

7. What applications are used on your network?

oDesktop publishing oSpreadsheet oWord processing oCAD/CAM
oDatabase management oAccounting oOthers_____________________

8. What category best describes your company?

oAerospace oEngineering oEducation oFinance oHospital oLegal oInsurance/Real Estate oManufacturing
oRetail/Chainstore/Wholesale oGovernment oTransportation/Utilities/Communication oVAR
oSystem house/company oOther________________________________

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

oYes oNo oDon't know yet

10.Your comments on this product?

__________________________________________________________________________________________

No.

_________________________________________________________________________

* Product installed in type of
computer (e.g., Compaq 486)

* Product installed in

computer serial No.