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DFE-908x
DFE-908
Ethernet/Fast Ethernet
Dual-Speed Stackable Hubs
User’s Guide
Rev. 01 (December, 1997)
6DFE908...01
Printed In Taiwan
RECYCLABLE
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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 Flüssig- oder 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 Auf
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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 LI
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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 complete products applies on condition that the product's Registration Card is filled out and returned to a D-Link office within
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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 adap- tation without permission from D-Link Corporation/D-Link Systems Inc., as stipulated by the Uni
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FCC Warning &ODVV % IRU 0RGHO ')(0<3;2')(0<3;[ )&& ,' 1R= .$5('5<3;'+ 7KLV HTXLSPHQW KDV EHHQ WHVWHG DQG IRXQG WR FRPSO\ ZLWK WKH OLPLWV IRU D &ODVV % GLJLWDO GHYLFH/ SXUVXDQW WR 3DUW 48 RI WKH )&& 5XOHV1 7KHVH OLPLWV DUH GHVLJQHG WR SURYLGH UHDVRQDEOH SURWHFWLRQ DJDLQVW KDUPIXO LQWHUIHUHQFH LQ D UHVLGHQWLDO LQVWDOODWLRQ1 7KLV HTXLSPHQW JHQHUDWHV/ XVHV DQG FDQ UDGLDWH UDGLR IUHTXHQF\ HQHUJ\ DQG/ LI QRW LQVWDOOHG DQG XVHG LQ DFFRUGDQFH ZLWK WKH LQVWUXFWLRQV/ PD\ FDXVH KDUPIXO LQWHUIHUHQFH WR UDGL
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vii
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Dual-Speed Stackable Hubs User’s Guide ABLE OF ONTENTS T C 0 ABOUT THIS GUIDE.......................................................... IX Conventions..........................................................................................ix Overview of the User’s Guide...............................................................ix 1 INTRODUCTION.................................................................1 Product Description .............................................................
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Hub State Indicators............................................................................12 Port State Indicators............................................................................13 Port Speed Indicators ..........................................................................14 Switch Indicator (DFE-908x Only) ......................................................14 4 MAKING CONNECTIONS...................................................17 Hub Cascading/Building a Stack .......
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Dual-Speed Stackable Hubs User’s Guide ABOUT THIS GUIDE This guide discusses how to install and use the DFE-908 series stackable dual-speed Fast Ethernet/Ethernet Hubs. Conventions References in this manual to the DFE-908 and DFE-908x hubs are fre- quently written simply as “hub” or “hubs” where the text applies to all models. Model numbers are normally used only to differentiate between the two where necessary. Unless differentiated by model number, all information applies to all mod- els. Ov
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♦ Chapter 4, Making Connections. Provides information on connect- ing to the hub’s twisted-pair, stacking hubs, and linking with other 100BASE-TX hubs. ♦ Appendix A, Cables and Connectors. Provides specifications on the cables and connectors used with the hubs. Appendix B, . Lists the hubs’ specifications. ♦ Specifications x About this Guide
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Dual-Speed Stackable Hubs User’s Guide 1 NTRODUCTION 1 I This chapter introduces the DFE-908 series stackable dual-speed Fast Ethernet/Ethernet Hubs, as well as giving some background information about the technology the hubs use. Product Description The D-Link DFE-908 series stackable dual-speed Fast Ethernet/Ethernet Hubs are designed to allow easy migration and integration between 10Mbps Ethernet and 100Mbps Fast Ethernet, while providing flexibility in cable connections. The DFE-908 series
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Class II Fast Ethernet repeater, allowing it to be linked to another Class II Fast Ethernet stack in the same collision domain. On the DFE-908, the 10Mbps and 100Mbps segments are separate and do not intercommunicate. The DFE-908x contains a built-in switch, making it possible to transparently bridge between the 10 Mbps and 100 Mbps seg- ments. Product Features The list below highlights the features and specifications of the DFE-908 series hubs: ♦ Compatible with the IEEE 802.3 10BASE-T Ethernet
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Dual-Speed Stackable Hubs User’s Guide ♦ LED indicators for power, collisions, link, network activity, switch capability (DFE-908x only), partitioning status, operating speed (10 or 100 Mbps) and network utilization. ♦ Auto-partition 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. Uplink port allows easy linking of two Fast Ethernet or four Ethernet ♦ hub st
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repeater retransmits Fast Ethernet transmissions from ports operating at 100Mbps to all other ports operating at the same speed. 10Mbps Repeater 100Mbps Repeater NWay Detection RJ-45 Ports 100Mbps 100Mbps 10Mbps 10Mbps 100Mbps Ethernet Ethernet Ethernet Ethernet Ethernet Station Station Station Station Station If there is a DFE-908x hub present in the stack, its built-in switch serves as a bridge between the two independent segments. 4 Introduction
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Dual-Speed Stackable Hubs User’s Guide 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 ad- vanced 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 lowe
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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 envi- ronment. Recent innovations in LAN hub technology such as stackable hubs, coupled with the decreasing cost of switches, bridges, and
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Dual-Speed Stackable Hubs User’s Guide Hub Types 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 translat- ing 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 1
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Unpacking Open the shipping carton of your hub and carefully unpack the contents. The carton should contain the following items: ♦ One dual-speed stackable hub ♦ One AC power cord, suitable for your area’s electrical power con- nections ♦ One daisy-chain cable ♦ Four rubber feet to be used for shock cushioning ♦ This User’s Guide Inspect the hub and all accompanying items. If any item is damaged or missing, report the problem immediately to your D-Link dealer. Identifying External Components Th
