D-Link DFE-916X User Manual
DFE-916x
DFE-916
Ethernet/Fast Ethernet
Dual-Speed Stackable Hubs
User’s Guide
Rev. 02 (January, 1998)
6DFE916...02
Printed In Taiwan
RECYCLABLE
Wichtige Sicherheitshinweise
1. Bitte lesen Sie sich diese Hinweise sorgfältig durch.
2. Heben Sie diese Anlei tung für den spätern Gebrauch auf.
3. Vor jedem Reinigen ist da s Gerät vom St romne tz zu trennen. V ervenden Sie kei ne Flüssig- oder
Aerosolrei niger. Am besten dient ein ange feuchtetes T uc h z ur Reinigung.
4. Um eine Be schädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom
Hersteller zugelassen sind.
5. Das Gerät is vor Feucht igkeit zu schützen.
6. Bei der Aufstellung des G erätes ist auf sichern Stand zu achten. Ein Kippen oder F allen könnte
Verletzunge n he rvorrufe n. Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise
des Herstellers.
7. Die Bel üftungsöffnungen dienen zur Luftzirkulation die das Gerät vor Überhitzung schützt. Sorgen S ie
dafür, daß diese Öffnungen nicht abge de ckt 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 Si e die Netzanschlußleit ung so, daß niemand darübe r fallen kann. Es sollete a uc h nichts auf
der Leitung abgestellt werden.
11. Alle Hinweise und Wa rnungen die sich am G eräten befinden s ind zu beachten.
12. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen.
Somit wird im Falle ei ner Überspannung eine Beschädigung ve rmieden.
13. Durch die Lüftungs öffnungen dürfen niemals Gegenstände ode r Flüssigkeiten in das G e rä t gelangen.
Dies könnte einen Brand bz w . Elektrischen Schlag auslösen.
14. Öffnen Sie nie ma ls das Gerät. Das Gerä t darf aus Gründen der elektrischen S icherheit nur von
authorisiertem Servicepersonal geöffnet werden.
15. Wenn folgende S ituationen auft reten ist da s Gerät vom Stromnetz zu trennen und von einer qualifizierten
Servicestelle zu überprüfen:
a– Netzkabel ode r Netzstec ke r sint beschä digt.
b– Flüssigkeit ist in das Gerät e ingedrungen.
c– Das Gerät war Feuchtigkeit ausgesetzt.
d– Wenn das Gerät nicht der Bedienungsanle itung ensprechend funktioniert oder Sie mit Hilf e dieser
Anleitung keine Verbess e rung e r z ielen.
e– Das Gerät ist gefal len und/oder das Ge hä use ist beschädigt.
f– Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
16. Bei Re pa ra turen dürfen nur Orginale rsatzteile bzw. den Orginalteile n entsprechende Te ile verwendet
werden. Der Einsatz von ungeeigneten Ersat zteilen kann eine weitere Beschädigung he rvorrufe n.
17. Wenden Sie sich mit all en Fragen die Service und Repartur betreffen an Ihren Servic e pa rtner. Somit
stellen Sie die Betriebssicherheit des Gerätes sicher.
ii
Limited Warranty
Hardware:
D-Link warrants its hardware products to be free from de fects in workmanship and materials, under normal
use and servi c e , for the following lengths of time from the date of purchase from D-Link or its Aut horized
Reseller:
Product Type Warranty
Network adapters Lifetime
Unmanaged and managed hubs (10Mbps) Lifetime *
Unmanaged hubs (100Mbps) Lifetime *
Managed hubs (100Mbps) One year
Unmanaged and managed dual-speed hubs (10Mbps / 100Mbps) One year
Repeater s, MAUs , transcei ve rs, media conve rters One year
Concentrators One year
Internetworking produc ts One year
* Power supply a nd fa ns in these de vices One year
Other hardware produc ts One year
Spare parts and spare kits 90 days
If a product does not ope ra te as warranted during the appli c a ble warranty period, D-Link shal l, at its option
and expense, (1) re pair the defect ive product or part, (2) de liver to Cus tomer an equivalent product or part to
replace the defective item. All products that are re placed will become the property of D-Link. Replacement
products may be new or reconditioned. Any replaced or repaired product or part has a ni ne ty (90) day warranty or the remainder of the initial warranty period, whichever is longer.
D-Link shall not be responsi bl e for any software, firmware, informat ion, or memory data of Customer contained in, stored on, or inte grated with any products returned to D -L ink pursuant to any wa rra nty.
All products w ith lifetime warranty have a s tandard five-year warranty. To qualify for l ifetime warranty, the
enclosed P roduct Registration Card must be complete d a nd re turned to D-Link wi thin ninety (90) days of
purchase.
Warranty s e rvice may be obtaine d by contacting a D -L ink office withi n the applicable warranty period for a
Return Mate rial Authorization (RMA) number. If a Registrat ion Card has not be e n pre viously sent, proof of
purchase, such as a copy of the da ted purchase invoice, must be provided. Once an RMA number is issued,
the defecti ve product must be shipped back to D-Link pre pa id, insured and w r a ppe d 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, t he RMA number must be marked on the outside of the shipping package. Any
product returned wi thout an RMA number shall be reje c ted and sent bac k to the Customer, and D-Link reserves the right to have C ustomer bear the c ost of sending bac k such products. A service cha rge may or may
not be levie d to Customer by D - Link. To find out if a service cha r ge is levied or not, and the char ge d amount,
read the RMA that is returned to Customer, or ask the D-Link office when an RMA is requested.
Period
D-Link Offices to Contact for Warranty Service:
To obtain an RM A number for warranty se rvice, contact the D-Link offic e nearest you. There is a li st of
contact addresses for D-Li nk’s internationa l offices in the ba c k of this User’s Guide. Your W a rra nty Registration C a rd should also be sent to your regional D-Link office.
iii
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. D-LINK 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 EXIS T 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.
iv
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 regulations
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.
VCCI A Warning
v
ABLE OF
T
ONTENTS
C
0 A
BOUT THIS GUIDE
Conventions........................................................................................viii
Overview of the User’s Guide............................................................. viii
1 I
NTRODUCTION
Product Description ..............................................................................1
Product Features................................................................................... 2
Dual-Speed Ethernet Hub Technology Overview...................................3
100BASE-TX Technology Overview.......................................................5
100Mbps Fast Ethernet Introduct i on.............................................................. 5
Cables and Connectors..................................................................................6
Topology.......................................................................................................6
Network Diameter......................................................................................... 7
Hub Types..................................................................................................... 7
2 U
NPACKING AND SETUP
Unpacking.............................................................................................9
Identifying External Components......................................................... 10
Front Panel.................................................................................................. 10
Rear Panel................................................................................................... 11
Installing the Hub................................................................................12
Installation.................................................................................................. 12
Rack Mounting............................................................................................ 13
Connecting the Power Supply..............................................................14
.........................................................
.................................................................1
....................................................9
VIII
vi
Dual-Speed Stackable Hubs User’s Guide
3 U
NDERSTANDING INDICATORS
Hub State Indicators............................................................................16
Module Indicato rs (SLOT) ...................................................................17
Port State Indicators............................................................................17
Port Speed Indicators..........................................................................18
4 M
AKING CONNECTIONS
Hub Cascading/Building a Stack .........................................................19
Connectivity Rules...............................................................................20
Hub to End-Station Connection...........................................................21
Hub-to-Hub Uplink..............................................................................23
Optional Module Connections.............................................................24
Module Installati on ..................................................................................... 24
Switching Module (DFE-260S) ................................................................... 25
Fiber Optic Module (DFE-260FX) ............................................................... 26
Fast Ethernet Module (DFE-260TX)............................................................ 27
5 C
ABLES AND CONNECTORS
100BASE-TX Ethernet Cable and Connectors......................................29
...................................................19
.........................................15
............................................29
Crossover Cables.................................................................................30
6 S
PECIFICATIONS
General ...............................................................................................33
Hub-to-Hub Cascading ........................................................................34
LED Indicators....................................................................................34
Environmental and Physical ................................................................34
.............................................................33
vii
0 A
This guide discusses how to install and use the D-Link DFE-916 series
dual-speed stackable Ethernet/Fast Ethernet hubs.
BOUT THIS
UIDE
G
Conventions
As used in this manual, the e xpression "DFE-916 series" includes both t he
DFE-916 and the DFE-916x. Unless a specific model number is given, the
term "hub" (or "hubs") refers to any unit (or unit s) in t his serie s.
Most of the information in this manual applies to all DFE-916 and DFE916x units. Where a description applies to one model only, the specific
model number will be given.
Overview of the User’s Guide
Chapter 1,
♦
works, and introduces the features of the DFE-916 series hubs.
Chapter 2,
♦
the hub.
Chapter 3,
♦
on the hub’s front panel. Understanding these indicators is essential
to effectively using the hub.
Introduction
Unpacking and Setup
Understanding Indicators
. Provides information on Fast Ethernet net-
. Helps you get started in setting up
. Describes all LED indicators
About this Guideviii
Dual-Speed Stackable Hubs User’s Guide
Chapter 4,
♦
Making Connections
. Provides information on connecting to the hub’s twisted-pair and console ports, stacking hubs, and
linking with other hubs.
Appendix A,
♦
Cables and Connectors
. Provides specifications on the
cables and connectors used with t he hubs.
Appendix B,
♦
Specifications
. Lists the hubs’ specifications.
About this Guide ix
Dual-Speed Stackable Hubs User’s Guide
1
1 I
This chapter introduces DFE-916 series dual-speed stackable hubs, as well
as giving some background information about the technology the hubs use.
NTRODUCTION
Product Description
D-Link DFE-916 series dual-speed stackable Ethernet/Fast Ethernet hubs
are designed to allow easy migration and integration between 10Mbps
Ethernet and 100Mbps Fast Ethernet, while providing manageability and
flexibility in cable connections.
Each hub can operate with both IEEE 802.3 10BASE-T connections
(twisted-pair Ethernet operating at 10 megabits per second) and IEEE
802.3u 100BASE-TX connections (twisted-pair Fast Ethernet operating at
100 megabits per second). All of the twisted-pair ports support NWay
auto-negotiation, allowing the hub to automatically detect the speed of a
network connection. This means you can connect all of your Ethernet and
Fast Ethernet hosts to a DFE-916 series hub stack, without any rewiring
required when a host is upgraded from 10Mbps to 100Mbps.
DFE-916 series hubs have 16 ports each and can be stacked together toa
maximum of five hubs in a stack. A stack of five 16-port hubs gives a total
of 80 Ethernet or Fast Ethernet ports. A DFE-916 series hub stack operates
as a Class II Fast Ethernet repeater, allowing it to be linked to another Class
II Fast Ethernet stack in the same collision domain.
Introduction 1
In the basic configuration, 10Mbps and 100Mbps segments are separate and
do not intercommunicate. An optional DFE-260S switching module (included with the DFE-916x) can be installed in any hub in the stack, making
it possible to transparentl y bri dge be t ween 10Mbps a nd 100Mbps segments.
In a managed hub stack, more than one DFE-260S module can be used to
provide automatic redundancy.
Other add-in modules are also available, providing switched 100BASE-TX
or switched 100BASE-FX connections. DFE-916x and DFE-916 hubs have
one slot each for accepting slide-in modules.
Product Features
The list below highlights the features and specifications of DFE-916 series
hubs:
♦ Compatible with the IEEE 802.3 10BASE-T Ethernet and 802.3u
100BASE-TX Fast Ethernet industry standards for interoperability
with other Ethernet/Fast Ethernet network devices.
♦ Ethernet connections support Category 3 or better twisted-pair ca-
bles.
♦ Fast Ethernet connections support both shielded twisted pair and
Category 5 unshielded twisted-pair cables.
♦ Fast Ethernet connections support a maximum distance of 100 me-
ters from end-station to hub, and a total network diameter of 205
meters.
♦ Sixteen NWay ports per hub for connecting stations to the network.
♦ An optional slide-in switching module allows bridging between
10Mbps and 100Mbps segments. Only one switching module is
needed per stack, but managed hub stacks can make use of additional switching modules for redundancy.
Introduction2
Dual-Speed Stackable Hubs User’s Guide
♦ A stack can contain various DFE-916 series models and DFE-2624
and DFE-2616 series models. For SNMP management, DFE-916
and DFE-916x units can be managed through a DFE-2616i/DFE2616ix or DFE-2624i/DFE-2624ix master hub.
♦ LED indicators for power, collisions, link, network activity, parti-
tioning status, disable, operating speed (10 or 100Mbps) and
network utilization.
♦ Digital hub ID number front panel display.
♦ Auto-partitioning for network protection.
♦ Data collision detection and handling.
♦ Preamble regeneration, signal retiming.
♦ Two proprietary daisy-chain ports for cascading up to five hubs to
form one logical hub; management capability is provided via a
master hub.
♦ Uplink port allows easy linking of two hub stacks to further expand
your network.
♦ Optional brackets for mounting in sta nda rd 19-inc h e quipm e nt ra c k.
♦ Internal universal power supply and automatic voltage selection
(100V to 240V, 50 or 60HZ).
♦ Optional slide-in modules: 100BASE-TX, 100BASE-FX (see
Chapter 4 , Making Connections).
Dual-Speed Ethernet Hub
Technology Overview
Dual-speed Ethernet hubs have been developed to make it simpler t o plan
networks containing both 10Mbps Ethernet and 100Mbps Fast Ethernet
Introduction 3
technologies, especially when network hosts are being gradually migrated
to new Fast Ethernet connections.
A dual-speed hub is actually two repeaters in one enclosure. The 10Mbps
repeater receives Ethernet transmissions from any of its ports, and retransmits them to all other ports operating at 10Mbps. Similarly, the 100Mbps
repeater retransmits Fast Ethernet transmissions from ports operating at
100Mbps to all other ports operating at the same speed.
10Mbps Repeater
100Mbps Repeater
NWay Dete ctio n
RJ-45 Ports
100Mbps
Ethernet
Station
100Mbps
Ethernet
Station
10Mbps
Ethernet
Station
10Mbps
Ethernet
Station
100Mbps
Ethernet
Station
If there is a DFE-260S module, or a DFE-916x hub present in the stack, the
switching module will serve as a bridge between the two independent repeaters.
Introduction4
DFE-260s
Switch
Module
Dual-Speed Stackable Hubs User’s Guide
10Mbps Repeater
100Mbps Repeater
NWay Dete ctio n
RJ-45 Ports
100Mbps
Ethernet
Station
100Mbps
Ethernet
Station
10Mbps
Ethernet
Station
10Mbps
Ethernet
Station
100Mbps
Ethernet
Station
100BASE-TX Technology Overview
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 handl e hea vy ne twork tra ffi c.
Recognizing this need for greater bandwidth and lower latency, a variety of
technologies suc h as FDDI, ATM, a nd Fast Ethe rnet (100Mbps) ha ve been
adopted by many vendors. Fast Ethernet technology stands out as the most
inexpensive and smoothest migration path for existing 10Mbps Ethernet
users in part because it doesn’t require a protocol translation when sharing
data with 10Mbps Ethernet.
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
Introduction 5
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