3Com 3C16471 Switch User Manual
Contents
1. m 5 b 8 1X 1 Power adapter socket Uplink Normal switch 100BASE TX RJ 45 ports Only use the povver adapter that is Affects the operation of the highest numbered port Use 100BASE TX cable with RJ 45 connectors supplied with this OfficeConnect port 4 on Hub 4 and port 8 on Hub 8 For connecting You can connect the OfficeConnect hub to any hub Do not use any other adapter the port to a workstation set to Normal out For workstation or piece of equipment that has a connecting the port to another OfficeConnect unit set 100BASE TX port The highest numbered port to Uplink in Refer to the Connecting OfficeConnect can be used to link to another OfficeConnect Hubs Together section unit Refer to the Connecting OfficeConnect Hubs Together section Fast Ethernet Hub 12 Front Alert LED Povver LED Collision LED Port Status LEDs Netvvork Utilization LEDs orange green yellow green yellow green yellow orange Alerts you to Indicates that Flashes each time a Indicates the status of each port If Indicates how much your excessive network the power collision is detected nothing is connected the LED is off network is being used use ora supply to the at the hub Collisions If green the link between the port partitioned hub is present are part of normal and the next piece of network 100BASE TX port network operation equipment is OK If yellow the2. A Local Area Network LAN is a network usually in an office that spans no more than a single site Ethernet is a type of LAN referring to the technology used to pass information around the network Fast Ethernet is a type of LAN that runs ten times faster than standard Ethernet 10BASE T is the name given to the Ethernet protocol that runs over Twisted Pair TP cable at 10Mbps 100BASE TX is the name given to the Fast Ethernet protocol that runs over Twisted Pair TP cable at 100Mbps The OfficeConnect hub uses RJ 45 type connectors for connecting your TP network 17 A Network Loop occurs when two pieces of network equipment are connected by more than one path Your hub detects this and partitions isolates one of its ports to break the loop A segment is the length of cable connected to a port whether this cable is 10BASE T 100BASE TX or another type Packets are the units of information your workstations and other equipment send to each other over the network Collisions are a part of normal Fast Ethernet operation and occur if two or more devices pieces of network equipment attempt to transmit at the same time A sudden sustained increase in the number of collisions can indicate a problem with a device particularly if it is not accompanied by a general increase in traffic DIMENSIONS AND STANDARDS Dimensions and Operating Conditions OfficeConnect Fast Ethernet Hub 4 y 4 VA
3. Hub 4 and Server OfficeConnect hub Netvvork server If you need to connect more workstations simply use the stacking clip to connect another OfficeConnect hub to form a Stack each hub is a single Class Il repeater CREATING YOUR NETWORK Fast Ethernet Hub 4 and Hub 8 Front Alert LED Power LED Activity LED Collision LED gt Port Status LEDs Network Utilization orange green Hub 4 only yellow green yellow LEDs Hub 8 only Alerts you to Indicates that yellow Flashes each time a Indicates the status of each port If green yellow orange excessive network the power Flashes each time a collision is detected nothing is connected the LED is off Indicates how much your use or a supply to the packet is received at the hub Collisions If green the link between the port network is being used partitioned hub is present on a port are part of normal and the next piece of network 100BASE TX port network operation eguipment is OK If yellow the port has partitioned due to a fault on that segment RE R dan 007 z r m a a li m T A ne eee Borustatus ae ESA Network Utilization 1 Alert Power Activity Collision 1 2 3 4 5 6 ui 8 1 2 3 6 12 25 50 80 3 Do zus ARRETE OfficeConnect Fast Ethernet Hub 8 Fast Ethernet Hub 4 and Hub 8 Rear POVVER 1
4. Pacific Rim Australia 1800 678 515 PR of China 10800 61 00137 or Hong Kong 800 933 486 021 6350 1590 India 61 2 9937 5085 Singapore 800 6161 463 Indonesia 001 800 61 009 S Korea Japan 0031 61 6439 From anywhere in S Korea 00798 611 2230 Malaysia 1800 801 777 From Seoul 0 2 3455 6455 New Zealand 0800 446 398 Taiwan R O C 0080 611 261 Pakistan 61 2 9937 5085 Thailand 001 800 611 2000 Philippines 1235 61 266 2602 Europe From anywhere in Europe call 31 0 30 6029900 phone 31 0 30 6029999 fax Europe South Africa and Middle East From the following countries you may use the toll free numbers Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 0800 297468 Netherlands 0800 71429 Norway 800 17309 Poland 0800 113153 Portugal 0800 917959 South Africa 0800 1821502 Spain 00800 12813 Sweden 1800 553117 Switzerland 1800 9453794 U K 1678 79489 26 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 Country Telephone Number Country Telephone Number Latin America Argentina Brazil Chile Colombia AT amp T 800 666 5065 0800 13 3266 1230 020 0645 98012 2127 Mexico Peru Puerto Rico Venezuela 01 800 CARE 01 800 2273 AT amp T 800 666 5065 800 666 5065 AT amp T 800 666 5065 North America 1 800 876 3266 27 Returning Products for Repair Before you send a product direc
5. Technical Services 24 VVorld VVide VVeb Site 24 3Com Knovvledgebase VVeb Services 24 Support from Your Netvvork Supplier 25 Support from 3Com 25 Returning Products for Repair 28 3Com Corporation Limited VVarranty 29 Electromagnetic Compatibility 32 INTRODUCTION Welcome to the world of networking with 3Com In the modern business environment communication and sharing information is crucial Computer networks have proved to be one of the fastest modes of communication but until recently only large businesses could afford the networking advantage The OfficeConnect product range from 3Com has changed this bringing networks to the small office The OfficeConnect Fast Ethernet Hub 4 Hub 8 and Hub 12 are ideal for creating small fast high bandwidth networks They are compact and attractively designed for desktop use These products are part of the OfficeConnect range which neatly stack together with the OfficeConnect Stacking Clip When referring to all three products this guide uses the term OfficeConnect hub The OfficeConnect hub is a Fast Ethernet Class II repeater allovving the creation of a netvvork that runs 10 times faster than standard Ethernet You can connect a vvorkstation server or other piece of equipment to each 100BASE TX port as shovvn in Figure 1 The Hub 4 has four 100BASE TX ports the Hub 8 has eight and the Hub 12 has tvvelve Figure 1 Small Netvvork Featuring OfficeConnect Fast Ethernet
6. a United States government agency then this documentation and the software described herein are provided to you subject to the following All technical data and computer software are commercial in nature and developed solely at private expense Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in 3Com s standard commercial license for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com the 3Com logo and OfficeConnect are registered trademarks of 3Com Corporation Santa Clara California m 95052 8145 Microsoft MS DOS Windows and Windows NT are registered trademarks of Microsoft Corporation Novell and NetWare are registered trademarks of Novell Inc All other company and product names may be trademarks of the respective companies with which they are associated Year 2000 Compliance For information on Year 2000 compliance and 3C
7. folgenden Sicherheitsinformationen sorgf ltig durchlesen bevor Sie das Ger ts installieren oder ausbauen Bei der Installation und beim Ausbau des Ger ts ist mit h chster Vorsicht vorzugehen Stapeln Sie das Ger ts nur mit anderen OfficeConnect Ger tes zusammen Aufgrund von internationalen Sicherheitsnormen darf das Ger t nur mit dem mitgelieferten Netzadapter verwendet werden Die Netzsteckdose mu in der N he des Ger ts und leicht zug nglich sein Die Stromversorgung des Ger ts kann nur durch Herausziehen des Ger tenetzkabels aus der Netzsteckdose unterbrochen werden 22 Der Betrieb dieses Ger ts erfolgt unter den SELV Bedingungen Sicherheitskleinstspannung gem IEC 950 Diese Bedingungen sind nur gegeben wenn auch die an das Ger t angeschlossenen Ger te unter SELV Bedingungen betrieben werden Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Ger t vorhanden Wenn Sie ein Problem mit dem Switch haben das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann setzen Sie sich mit Ihrem Lieferanten in Verbindung Vor dem Ausbau des Ger ts das Netzadapterkabel herausziehen WARNHINWEIS RJ 45 Anschl sse Dies sind abgeschirmte RJ 45 Datenbuchsen Sie k nnen nicht als Telefonanschlu buchsen verwendet werden An diesen Buchsen d rfen nur RJ 45 Datenstecker angeschlossen werden CONSIGNES IMPORTANTES DE SECURITE AVERTISSEMENT Les avertissements pr se
8. vvorkstations 10 Stacking the Units Together The Rubber Feet The four self adhesive rubber feet prevent your hub from moving around on your desk Only stick the feet to the marked areas at each corner of the underside of your hub if you intend to place the unit directly on top of the desk Do not fix the feet if you are going to use the clip The Stacking Clip The blue stacking clip allows you to stack your OfficeConnect units together neatly and securely UN CAUTION You can stack up to a maximum of four units Smaller units must be stacked above larger units To fit the clip 1 Place your unit on a flat surface 2 Fit the clip across the top of the unit as shown in Figure 2 picture 1 ensuring that the longer sections of the fastening pieces are pointing downwards 3 Align the fastening pieces over the slots found on each side of the unit 4 Push the clip down gently to secure it ensuring the fastening pieces snap into the slots on the unit 11 To fit another unit 1 Rest the second unit on top of the clip and align it with the front of the unit below 2 Press down gently on the unit to secure it onto the clip ensuring the fastening pieces fit into the slots on the unit below as shown in Figure 2 picture 2 Figure 2 Stacking Your Units Together Fastening To remove the clip 1 Remove the top unit together with the clip If you hook a finger around one of the the fast
9. 14 BThU hr ku 1 er 9in 0 to 40 C 32 to 105 F 35 8mm operating gt 1 4in temperature NS gt b 0 0 to 9096 135 4mm 5 3in non condensing humidity 500g 1 11b OfficeConnect Fast Ethernet Hub 8 y 9VA 31 BThU hr power 9in SS 0 to 40 C 32 to 105 F AN gt 35 8mm operating WES S ZA 1 4in temperature b ni 25 0 to 90 135 4mm 5 3in ed non condensing humidity 550g 1 21b 18 OfficeConnect Fast Ethernet Hub 12 40 B 40 BThU hr e 228mm 9 12in power reguirement 0 to 40 C 32 to 1059p a operating emeyi temperature 0 to 90 185 4mm 7 3in non condensing humidity 950g 2 11b Standards Functional Safety EMC Environmental ISO 8802 3 IEEE 802 3 UL 1950 EN 60950 CSA 22 2 950 IEC 950 EN 55022 Class B EN 50082 1 FCC Part 15 Class B ICES 003 Class B VCCI Class B CNS 13438 Class A EN 60068 IEC 68 tCategory 5 screened cables must be used to ensure compliance with the Class B requirements of this standard The use of unscreened cables category 3 or category 5 complies with the Class A requirements Refer to Electromagnetic Compatibility on page 32 for conditions of operation 19 ENVIRONMENTAL STATEMENTS It is the policy of 3Com Corporation to be environmentally friendly in all operations To uphold our
10. LUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE OR PROFITS LOSS OF BUSINESS LOSS OF INFORMATION OR DATA OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND LIMITS ITS LIABILITY TO REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE DISCLAIMER Some countries states or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers or the limitation of liability for personal injury so the above limitations and exclusions may be limited in their application to you When the implied warranties are not allowed to be excluded in their entirety they will be limited to the duration of the applicable written warranty This warranty gives you specific legal rights which may vary depending on local law GOVERNING LAW This Limited Warranty shall be governed by the laws of the State of California U S A excluding its confli
11. Network Supplier If you reguire additional assistance contact your network supplier Many suppliers are authorized 3Com service partners who are gualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready m Product model name part number and serial number m A list of system hardware and software including revision levels m Diagnostic error messages m Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com 25 Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier 3Com offers technical telephone support services To find out more about your support options call the 3Com technical telephone support phone number at the location nearest you When you contact 3Com for assistance have the following information ready m Product model name part number and serial number m A list of system hardware and software including revision levels m Diagnostic error messages m Details about recent configuration changes if applicable Here is a list of worldwide technical telephone support numbers Country Telephone Number Country Telephone Number Asia
12. OfficeConnect Z Fast Ethernet Hub 4 Hub 8 Hub 12 User Guide 3C16723A 3C16722A 3C16721A 3Com Corporation m 5400 Bayfront Plaza m Copyright 1999 3Com Technologies All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative vvork such as translation transformation or adaptation vvithout vvritten permission from 3Com Technologies 3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time vvithout obligation on the part of 3Com Technologies to provide notification of such revision or change 3Com Technologies provides this documentation vvithout vvarranty term or condition of any kind either implied or expressed including but not limited to the implied vvarranties terms or conditions of merchantability satisfactory quality and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time If there is any software on removable media described in this documentation it is furnished under a license agreement included with the product as a separate document in the hard copy documentation or on the removable media in a directory file named LICENSE TXT or LICENSE TXT If you are unable to locate a copy please contact 3Com and a copy will be provided to you UNITED STATES GOVERNMENT LEGEND If you are
13. ance with 3Com s standard terms and conditions for such service After the first year the vvarranty reverts to 3Com s standard lifetime limited vvarranty To qualify for the lifetime limited vvarranty and the advance hardvvare exchange you must submit the appropriate product vvarranty registration card to 3Com othervvise this product vvill be vvarranted for a period of one 1 year vvithout advance hardvvare exchange HARDVVARE 3Com vvarrants this hardvvare product to be free from defects in vvorkmanship and materials under normal use and service for the follovving length of time from the date of purchase from 3Com or its authorized reseller One 1 year unless othervvise specified above 3Com s sole obligation under this express vvarranty shall be at 3Com s option and expense to repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or if neither of the tvvo foregoing options is reasonably available 3Com may in its sole discretion refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned 3Com warrants any replaced or repaired product or part for ninety 90 days from shipment or the remainder of the initial warranty period whichever is longer SOFTWARE 3Com warrants that each software program licensed from it will perform in substant
14. and Software Warranty stated above 3Com warrants that each product sold or licensed to Customer on and after January 1 1998 that is date sensitive will continue performing properly with regard to such date data on and after January 1 2000 provided that all other products used by Customer in connection or combination with the 3Com product including hardware software and firmware accurately exchange date data with the 3Com product with the exception of those products identified at 3Com s Web site http www 3com com products yr2000 html as not meeting this standard If it appears that any product that is stated to meet this standard does not perform properly with regard to such date data on and after January 1 2000 and Customer notifies 3Com before the later of April 1 2000 or ninety 90 days after purchase of the product from 3Com or its authorized reseller 3Com shall at its option and expense provide a software update which would effect the proper performance of such product repair such product deliver to Customer an equivalent product to replace such product or if none of the foregoing is feasible refund to Customer the purchase price paid for such product Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety 90 days after purchase or until April 1 2000 whichever is later OBTAINING WARRANTY SERVICE Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Se
15. ce 3Com 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 3Com for repair whether under warranty or not ADDITIONAL SERVICES Telephone Support This OfficeConnect product comes with telephone technical support for ninety 90 days The ninety 90 day period begins on the date of Customer s product purchase The telephone technical support is available from 3Com from 9 a m to 5 p m local time Monday through Friday excluding local holidays Telephone technical support is limited to the 3Com products designated above and may include assistance with installation product specific configuration and identification of equipment problems Please refer to the Technical Support appendix in the User Guide for telephone numbers Response to requests for telephone technical support will be in the form of a return call from a 3Com representative by close of business the following business day To qualify for this 90 days of telephone technical support you must register on the 3Com Web site at http support 3Com com index htm and provide your date of purchase product number and serial number 3Com reserves the right to modify or cancel this telephone support offering at any time without advance notice This offer is not available where prohibited or restricted by law 3Com s Web and Bulletin Board Service are available at no c
16. cts of laws principles and excluding the United Nations Convention on Contracts for the International Sale of Goods 3Com Corporation 5400 Bayfront Plaza Santa Clara CA 95054 408 326 5000 31 ELECTROMAGNETIC COMPATIBILITY FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules and the Canadian Department of Communications Equipment Standards entitled Digital Apparatus ICES 003 These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment causes interference to radio or television reception which can be determined by turning the equipment off and on try to correct the interference by using one or more of the following measures m Reorient the receiving antenna m Relocate the equipment vvith respect to the receiver m Move the equipment away from the receiver m Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits m Consult the dealer or an experienced radio television technician for help CSA STATEMENT Thi
17. e lower hub to Uplink in If you use the highest number port of the upper hub ensure that its Uplink Normal Switch is set to Normal Figure 4 Correct Hub Connections Using 100BASE TX Switch set to Normal out Switch set to Uplink in 100BASE TX cable with RJ 45 connectors 14 Connecting to 10BASE T Networks Your OfficeConnect Hub can be connected to a 10BASE T network through an OfficeConnect switch for example an OfficeConnect Dual Speed Switch 8 Checking Hub Connections When you have connected your hubs power them on The Port Status LEDs for the ports you have used on the hubs should be green If they are not check your connections and the settings of the Uplink Normal switches Spot Checks At freguent intervals visually check that m The Alert LED is off this is the best way to find out if there are problems with your network m Case vents are not obstructed m Cabling is secure and not pulled taut PROBLEM SOLVING The OfficeConnect hub has been designed to aid you when detecting and solving possible problems with your network These problems are rarely serious the cause is usually a disconnected or damaged cable or incorrect configuration If this section does not solve your problem contact your supplier for information on what to do next Perform these actions first m Ensure all equipment is powered on m Power each unit off wait about 5 seconds and th
18. en power them on Check the following symptoms and solutions Power LED not lit Check your power adapter connection If there is still no power you may have a faulty power adapter which needs replacing with another OfficeConnect power adapter Do not use any other power adapter with the hub 15 Alert LED continuously lit There is either continual excessive use of your network over 80 or more likely a 100BASE TX port has partitioned due to a loop in your network in which case the corresponding Port Status LED will be yellow Examine your connections and remove the loop Each piece of equipment needs only one connection to your OfficeConnect hub Port Status LED yellow It is likely that there is a loop in your network which has caused this port to partition Examine your connections and remove the loop Each piece of equipment needs only one connection to your OfficeConnect hub Link between two OfficeConnect hubs not working Check your hub connections follow the information given in the Connecting OfficeConnect Hubs Together section It is likely that an Uplink Normal switch is incorrectly set VVorkstation connection not vvorking Check that you are using a 100Mbps adapter in your vvorkstation If your adapter can operate at various speeds ensure that it is set to operate at 100Mbps Port Status LED not lit for a port that has a connection There is a problem with this particular connection Check that the eq
19. ening pieces and then pull it gently from out of the slot the clip should come away with the upper unit attached to it 2 Push the clip in the center so it bends towards the base of the unit and then separate once the clip is loose Positioning Your OfficeConnect Hub When installing your OfficeConnect hub ensure m It is out of direct sunlight and away from sources of heat m Cabling is away from power lines fluorescent lighting fixtures and sources of electrical noise such as radios transmitters and broadband amplifiers m Water or moisture cannot enter the case of the unit m Air flow around the unit and through the vents in the side of the case is not restricted We recommend you provide a minimum of 25 4 mm 1in clearance Securing Your Hub There are two slots on the underside of the OfficeConnect hub which can be used for wall mounting It is recommended that you mount the hubs with the LEDs facing upwards to prevent dust entering the cooling vents When wall mounting the unit ensure that it is within reach of the power outlet For Hub 4 or Hub 8 Make two screw holes 150mm 5 9in apart Use the guide at the back of this manual to mark the position of the holes 12 For Hub 12 Make two screw holes 142mm 5 6in apart Use the guide at the at the back of this manual to mark the position of the holes Fix the screws into the wall leaving their heads 3mm 0 12in clear of the wall surface Re
20. harge and provide software and firmware upgrades a bug list and technical information about 3Com products 30 WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE CUSTOMER S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION TO THE FULL EXTENT ALLOWED BY LAW THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES TERMS OR CONDITIONS EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES TERMS OR CONDITIONS OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE SATISFACTORY QUALITY CORRESPONDENCE WITH DESCRIPTION AND NON INFRINGEMENT ALL OF WHICH ARE EXPRESSLY DISCLAIMED 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE OR USE OF ITS PRODUCTS 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER S OR ANY THIRD PERSON S MISUSE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHORIZED ATTEMPTS TO OPEN REPAIR OR MODIFY THE PRODUCT OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE OR BY ACCIDENT FIRE LIGHTNING OTHER HAZARDS OR ACTS OF GOD LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW 3COM ALSO EXC
21. ial conformance to its program specifications for a period of ninety 90 days from the date of purchase from 3Com or its authorized reseller 3Com warrants the media containing software against failure during the warranty period No updates are provided 3Com s sole obligation under this express warranty shall be at 3Com s option and expense to refund the purchase price paid by Customer for any defective software product or to replace any defective 29 media with software which substantially conforms to applicable 3Com published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials 3Com makes no warranty or representation that its software products will meet Customer s requirements or work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third party s product or from use of the software product not in accordance with 3Com s published specifications or user manual YEAR 2000 WARRANTY In addition to the Hardware Warranty
22. move any connections to the hub and locate it over the screw heads When in line gently push the hub on to the wall and move it downwards to secure When making connections be careful not to push the hub up and off the wall A Also available from 3Com is the OfficeConnect Mounting Unit part number 3C16765 This allows you to firmly secure a stack of OfficeConnect devices to the desktop or onto a shelf in a rack CAUTION Only wall mount single units do not wall mount stacked units Connecting Workstations and Other Eguipment to Your Hub AN WARNING Please read the Important Safety Information section before you start WARNHINWEIS Bitte lesen Sie den Abschnitt Wichtige Sicherheitsinformationen sorgf ltig durch bevor Sie das Ger t einschalten AVERTISSEMENT Veuillez lire attentivement la section Consignes importantes de s curit avant de mettre en route CAUTION Do not power the hub off and on quickly Wait about five seconds between power cycles A Connecting workstations and other eguipment to your hub is easy Connect them using 100BASE TX cables to any of the hub s 100BASE TX RJ 45 ports To connect a 100BASE TX cable simply slot the connector into the relevant RJ 45 port When the connector is fully in its latch locks it into place To disconnect the cable push the connector s latch in and remove it The hub detects all port connections so you can start using your network immedia
23. nings contain directions that you m There are no user replaceable fuses or user serviceable must follow for your personal safety Follow all parts inside the hub If you have a physical problem with directions carefully the unit that cannot be solved with problem solving You must read the following safety information actions in this guide contact your supplier carefully before you install or remove the unit m Disconnect the power adapter before moving the unit m Exceptional care must be taken during installation and AN WARNING RJ 45 ports These are shielded RJ 45 removal of the unit data sockets They cannot be used as telephone m Only stack the OfficeConnect hub with other sockets Only connect RJ 45 data connectors to these OfficeConnect units sockets m To ensure compliance with international safety standards only use the power adapter that is supplied with the unit m The socket outlet must be near to the unit and easily accessible You can only remove power from the unit by disconnecting the power cord from the outlet m This unit operates under SELV Safety Extra Low Voltage conditions according to IEC 950 The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions 21 WICHTIGE SICHERHEITSHINWEISE AN WARNHINWEIS Warnhinweise enthalten Anweisungen die Sie zu Ihrer eigenen Sicherheit befolgen m ssen Alle Anweisungen sind sorgf ltig zu befolgen Sie m ssen die
24. ntent des consignes que vous devez respecter pour garantir votre s curit personnelle Vous devez respecter attentivement toutes les consignes Nous vous demandons de lire attentivement les consignes suivantes de securite avant d installer ou de retirer l appareil A Faites tr s attention lors de l installation et de la d pose du groupe Seulement entasser le moyer avec les autres moyeux OfficeConnects Pour garantir le respect des normes internationales de s curit utilisez uniquement l adaptateur lectrique remis avec cet appareil La prise secteur doit se trouver proximit de l appareil et son acc s doit tre facile Vous ne pouvez mettre l appareil hors circuit qu en d branchant son cordon lectrique au niveau de cette prise L appareil fonctionne une tension extr mement basse de s curit qui est conforme la norme CEI 950 Ces conditions ne sont maintenues que si l quipement auquel il est raccord fonctionne dans les m mes conditions 23 m l n y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs l int rieur du moyeu Si vous avez un probl me physique avec le moyeu qui ne peut pas tre r solu avec les actions de la r solution des probl mes dans ce guide contacter votre fournisseur m D branchez l adaptateur lectrique avant de retirer cet appareil AN AVERTISSEMENT Ports RJ 45 I s agit de prises femelles blindees de donnees RJ 45 V
25. of one connector are connected to the same pins of the other connector refer m One power adapter for use with the OfficeConnect hub to Figure 5 on page 16 100BASE TX cable must be data m A Product Registration card for you to fill out and return grade Category 5 shielded or unshielded We recommend that you use shielded cable The maximum length you can use is 100m 328ft Your OfficeConnect hub comes with m Four rubber feet m A stacking clip gt In order to comply with the 100BASE TX standard m Two unit labels and eight cable ties ports designed for workstation connections have been m An OfficeConnect Network Assistant CD ROM marked with the graphical symbol x 1x 2x 3x This denotes a crossover in the ports internal wiring The extra parts mentioned in the next section are not supplied with the hub Hub Connections To connect to another OfficeConnect hub you need m One Straight through 100BASE TX cable The maximum length is 100m 328ft Refer to Connecting OfficeConnect Hubs Together on page 13 Workstation Connections To connect workstations or other equipment to your hub you need 1 A 100BASE TX adapter card for _ each vvorkstation 3Com ss 3 produce a range of easy to R install netvvork adapter cards vvhich provide your vvorkstations vvith 100BASE T connections 2 An operating system for example Netvvare or Windows 95 98 vvith netvvork support configured running on your
26. om products visit the 3Com Year 2000 Web page http www 3com com products yr2000 html Environmental Statement Please recycle this user guide after use Please e mail any comments about this document to 3Com at pddtechpubs_comments 3Com com Please include the document title OfficeConnect Fast Ethernet Hub 4 8 12 User Guide part number DUA1672 1AAA03 and if appropriate the page number Introduction 5 Creating Your Network 6 Fast Ethernet Hub 4 and Hub 8 Front 6 Fast Ethernet Hub 4 and Hub 8 Rear 7 Fast Ethernet Hub 12 Front 8 Fast Ethernet Hub 12 Rear 9 Before You Start 10 VVorkstation Connections 10 Hub Connections 10 Stacking the Units Together 11 The Rubber Feet 11 The Stacking Clip 11 Positioning Your OfficeConnect Hub 12 Securing Your Hub 12 Connecting VVorkstations and Other Equipment to Your Hub 13 Connecting OfficeConnect Hubs Together 13 Connecting 100BASE TX Hubs 14 Connecting to 10BASE T Netvvorks 14 Checking Hub Connections 14 Spot Checks 14 Problem Solving 15 Netvvorking Terminology 17 Dimensions and Standards 18 Dimensions and Operating Conditions 18 Standards 19 Environmental Statements 20 End Of Life Statement 20 Regulated Materials Statement 20 Environmental Statement about the Documentation 20 Environmental Statement about the Product Packaging 20 Important Safety Information 21 VVichtige Sicherheitshinvveise 22 Consignes importantes de securite 23 Technical Support 24 Online
27. ous ne pouvez pas les utiliser comme prise de t l phone Branchez uniguement des connecteurs de donnees RJ 45 sur ces prises femelles TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This section describes these services Information contained in this section is correct at time of publication For the most recent information 3Com recommends that you access the 3Com Corporation World Wide Web site Online Technical Services 3Com offers worldwide product support 24 hours a day 7 days a week through the following online systems m World Wide Web site m 3Com Knowledgebase Web Services World Wide Web Site To access the latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com 24 This service provides access to online support information such as technical documentation and software as well as support options that range from technical education to maintenance and professional services 3Com Knowledgebase Web Services This interactive tool contains technical product information compiled by 3Com expert technical engineers around the globe Located on the World Wide Web at http knowledgebase 3com com This service gives all 3Com customers and partners complementary round the clock access to technical information on most 3Com products Support from Your
28. policy we are committed to Establishing environmental performance standards that comply with national legislation and regulations Conserving energy materials and natural resources in all operations Reducing the waste generated by all operations Ensuring that all waste conforms to recognized environmental standards Maximizing the recyclable and reusable content of all products Ensuring that all products can be recycled reused and disposed of safely Ensuring that all products are labelled according to recognized environmental standards Improving our environmental record on a continual basis 20 End Of Life Statement 3Com processes allow for the recovery reclamation and safe disposal of all end of life electronic components Regulated Materials Statement 3Com products do not contain any hazardous or ozone depleting material Environmental Statement about the Documentation The documentation for this product is printed on paper that comes from sustainable managed forests it is fully biodegradable and recyclable and is completely chlorine free The varnish is environmentally friendly and the inks are vegetable based with a low heavy metal content Environmental Statement about the Product Packaging The packaging for this product is fully recyclable It has a recycled post consumer waste content of at least 40 by weight and no heavy metal content MPORTANT SAFETY NFORMATION AN WARNING War
29. port has partitioned due to a fault on that segment 1 C LO C Port Status Network Utilization 3 O O q y x ARTS C 1 E 12 Alert Power Collision va 9 4 2 1 2 3 6 12 25 50 80 TO Green OK Yellow Partitioned OfficeConnect Fast Ethernet Hub 12 Fast Ethernet Hub 12 Rear em xi P II TT H LL L 5 W n rk K ee u dla I 6X 1X POWER Uplink Normal 12 7X Power adapter socket nom switch 100BASE TX RJ 45 ports Only use the power adapter that is Affects the operation of the highest numbered Use 100BASE TX cable with RJ 45 connectors supplied with this OfficeConnect port port 12 For connecting the port to a You can connect the OfficeConnect hub to any hub Do not use any other adapter workstation set to Normal out workstation or piece of equipment that has a For connecting the port to another 100BASE TX port The highest numbered port OfficeConnect unit set to Uplink in Refer to can be used to link to another OfficeConnect the Connecting OfficeConnect Hubs unit Refer to the Connecting OfficeConnect Together section Hubs Together section 3 One Straight through 100BASE TX cable for each Before You Start vvorkstation or piece of equipment A Straight through cable is one where the pins
30. rvice Center within the applicable warranty period to obtain warranty service authorization Dated proof of purchase from 3Com or its authorized reseller may be required Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid and packaged appropriately for safe shipment and it is recommended that they be insured or sent by a method that provides for tracking of the package The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after 3Com receives the defective product Dead or Defective on Arrival In the event a product completely fails to function or exhibits a defect in materials or workmanship within the first forty eight 48 hours of installation but no later than thirty 30 days after the date of purchase and this is verified by 3Com it will be considered dead or defective on arrival DOA and a replacement shall be provided by advance replacement The replacement product will normally be shipped not later than three 3 business days after 3Com s verification of the DOA product but may be delayed due to export or import procedures When an advance replacement is provided and Customer fails to return the original product to 3Com within fifteen 15 days after shipment of the replacement 3Com will charge Customer for the replacement product at list pri
31. s Class B digital apparatus meets all requirements of the Canadian interference Causing Equipment Regulations Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le mat riel brouilleur du Canada 32 VCCI STATEMENT CORB AMERESER SATEMNESS VCCI ORME BOS TIA BIERKNEE TI CORB R R TC MT EEE SANCUTHETM IOLEMNFTYAPFLEVS ANSE SMBS SRCTCEMHVET RRS Cito TELUROMRUELTFEU BCIQ STATEMENT RE ee WUR m Ee 2 bk H t AGERE gt HY He GRATE gt TEME Tet N gt BEAL SORE RAR EES 111 INFORMATION TO THE USER The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington DC 20402 Stock No 004 000 00345 4 In order to meet FCC emissions limits this equipment must be used only with cables which comply with IEEE 802 3 33 34 SE UI9 S UWUZYL ZL GNH 19UJ9U 3 1524 ap n6 ajoy Mans Bununou IPAA UI6 UWOGL 8 pue y ANH 13U1ey 3 1524 ajoy Mans Bununou jeM 9E 6661 unf p usilqna EOVVVL CLZ9L VNA ON Hed
32. tely When you need more ports simply add more OfficeConnect hubs gt If you are using the highest number port port 4 on Hub 4 port 8 on Hub 8 port 12 on Hub 12 to connect a workstation ensure the Uplink Normal switch is set to Normal out 13 Connecting OfficeConnect Hubs Together You can increase the number of workstations that can connect to your network by adding another OfficeConnect hub You can directly connect together a maximum of two Fast Ethernet hubs The total length of cable A B C below between two workstations or between a workstation and a non repeater piece of eguipment such as a switch must not exceed 205m 672ft Each cable A Bor Q must not exceed 100m 328ft 3Com recommends that the cable B between the Fast Ethernet hubs is no longer than 5m 16 4ft This allows the maximum hub to workstation cable length A or C of 100m 328ft to be used as in Figure 3 Figure 3 Configuration Rules and Example of a Fast Ethernet Network Switch Workstation Workstation Example 328ft an 100m 328ft Connecting 100BASE TX Hubs You can connect two OfficeConnect hubs together as seen in Figure 4 with 100BASE TX in a number of ways but for simplicity we recommend the following method 1 Connect the highest number port port 4 on Hub 4 port 8 on Hub 8 port 12 on Hub 12 of the lower hub to any port of the upper hub 2 Set the Uplink Normal switch on th
33. tly to 3Com for repair you must first obtain a Return Material Authorization RMA number Products sent to 3Com without authorization numbers will be returned to the sender unopened at the sender s expense To obtain an authorization number call or fax Country Telephone Number Fax Number Country Telephone Number Fax Number 65 543 6500 65 543 6348 31 30 6029900 31 30 6029999 1 408 326 3355 Asia Pacific Rim Europe South Africa and Middle East Latin America 1 408 326 2927 From the following countries you may call the toll free numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K U S A and Canada 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 00800 12813 1800553117 1800 9453794 1678 79489 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 1 800 876 3266 1 408 326 7120 not toll free 3Com Corporation LIMITED WARRANTY 3Com OfficeConnect Fast Ethernet Hub 4 Hub 8 Hub 12 The duration of the warranty for the OfficeConnect Fast Ethernet Hub 4 3C16723A Hub 8 3C16722A and Hub 12 3C16721A is lifetime including the povver adapter Advance hardvvare exchange is available during the first year from your date of purchase in accord
34. uipment connected to the hub is powered on operating correctly and contains a 100BASE TX connection The hub can only be directly connected to equipment that can provide a 100Mbps connection not 10Mbps only In particular ensure that m You are using a 100Mbps adapter in your workstation if connecting a workstation to the hub If your adapter can operate at various speeds ensure that it is set to operate at 100Mbps m Any 10Mbps equipment that you want to link to the hub is connected through a 10 100 hub or switch m You are using a Straight through 100BASE TX cable that is properly connected at both ends and is not damaged Refer to Figure 5 to compare the wiring of a straight through and a crossover cable Figure 5 Straight through Cable Crossover Cable Normal port Tx Pin 1 2 AA Uplink port Rx Tx Normal port Tx Normal port Rx Rx Tx 16 NETWORKING TERMINOLOGY A Network is a collection of workstations for example IBM compatible PCs and other equipment for example printers connected for the purpose of exchanging information or sharing resources Networks vary in size some are within a single room others span continents
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