Nortel Networks 70 User Manual

Part No. 206375-A June 1999

4401 Great America Parkway Santa Clara, CA 95054

Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches

*206375-A*

All right s reserved . Printed in th e U SA . June 1999. The information in this document is sub ject to change wi thout notice. The statement s, configurations, technical data,

and recommendations in this document are believed to be accurate and reliable, but are presented without e xpress or implied warranty. Users must take full responsibi lity for th eir applications of any products specif ied in this document. The information in this document is pro prietary to Nortel Networks NA Inc.

Trademarks

NORTEL NETWORKS is a trademar k of Norte l Networks Corporation. Bay Networks is a registered trademark and BayStack and the Nortel Net w orks logo are trademarks of Nor tel

Networks NA Inc. Microsoft is a registered trademark of Microsoft Corporation. All other trademarks and registered trademarks are the property of their respecti ve owners.

Notice

Note: 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 eq uipment genera tes, uses, and can radiate radio frequenc y energy. If it is not install ed and used in accor dance with the instruction manual, it may cause harmful interf erence to radi o com munications. Operation of this equi pm ent in a resid ential area is likely to cause harmful interf erence, in which case users will be required to take whatever me asures may be necessary to correct the interference at their own expense.

EN 55 022 Statement

This is to certify that the Nortel Networks BayStack 70 Series 10/100 Ethernet Switches are shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Art icle 4a. Conformit y is declared by the application of EN 55 022 Class A (CISPR 22).

Warning: This is a Class A product. In a domestic environment, this product may ca use radio interference, in which case, the user may be required to take appropriate measures.

EC Declaration of Conformity

These products conform to the provisions of Council Directive 89/ 336/EEC and 73/23/EEC. The Declara tion of Conformity is available on the No rtel Networks World Wide Web site at http://libra2.corpwest.baynetworks.com/cgi-bin/ndCGI.ex e/DocV iew/.

Voluntary Control Council for Interference (VCCI) Statement

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Voluntary Control Council for Interference (VCCI) Statement

This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI). If this equipment is used in a domes tic env ironment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions.

Canadian Department of Communications Radio Interference Regulations

This digital appa ra tus (Bay Sta ck 70 Ser ies 10/ 10 0 Ethe rnet Sw itc hes ) do not ex ce ed th e Clas s A limits for radio- noi se emissions from digital apparatus as se t out in the Radio Interference Regulations of the Canadian Department of Communications.

Règlement sur le brouillage radioélectrique du ministère des Communications

Cet appareil numérique (BayStack 70 Series 10/100 Ethernet Switches) respecte les limites de bruits radioélectriques visant les ap par ei ls num ériq ues de cl asse A prescr it es dans le Règ le ment sur le br oui llag e ra dio élect r ique du m inis tè re des Communications du Canada.

Electromagnetic Interference (EMI) Statement

Wichtige Sicherheitshinweis e

1. Bitte lesen Sie diese Hinwe ise sorgfaltig durch.

2. Heben Sie diese Anleitung fur den spateren Gebrauch auf.

3. Vor jedem Reinigen i st das Gerat v om S tromnetz zu trennen. Verwenden Sie keine Flussigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.

4. Um eine Beschadigung des Gera tes zu vermei den sollten Sie nur Zubehorteile verwenden, die vom Hersteller zugelassen sind.

5. Da s G e rat ist vor Feu ch t ig keit zu schutzen.

6. Bei der Aufstellung des Ger ates ist auf sicheren Stand zu achten. Ein Kippen oder Fallen konnte Verl etzungen hervor rufen. Ver w enden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers.

7. Die Beluftungsoffnungen dienen der Luftzirkulation die das Gerat vor Uberhitzung schutzt. Sorgen Sie dafur, daB diese Of fnungen nicht abgedeckt werden.

8. Beachten Sie beim AnschluB an das Stromnetz die AnschluBwerte.

9. Die Netzanschlusteckdose muB aus Grunden der elektrischen Sicherheit einen Schut zleiterkontakt haben .

10. Verlegen Sie die NetzanschluBleit ung so, da B niemand da ruber fallen kann. Es sollte auch nichts auf der Leitung abgestellt werden.

11. Alle Hinweise und Warnungen, die sich am Geraten befinden sind zu beachten.

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iii

12. Wird das Gerat uber einen langeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetztrennen. Somit wird im Falle einer Uberspannung eine Beschadigung vermieden.

13. Durch die Luftun gso f fnun gen dur fe n niema ls Ge gen stand e od er Flu ssigk ei ten i n d as Gera t gelang en. Di es ko nnt e einen Brand b zw. elektrische n Schlag auslosen.

14. Offnen sie niemals das Gerat. Das Gerat darf aus Grunden der elektrischen Sicherheit nur von authorisiertem Servicep ersonal geoffnet werden.

15. Wenn folgende Situationen auftreten ist das Gerat v om Stromnetz zu tr ennen und von ei ner qualifizierten Servicestelle zu uberprufen:

a Netzkabel oder Netzstecker sind beschadigt. b Flussigkeit ist in das Ge rat eingedrungen. c Das Gerat war Feuchtigkeit ausgesetzt. d Wenn das Gerat nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit Hilfedieser Anleitung

keine Verbesserung erzielen. e Das Gerat ist gefallen und/oder da s G ehause ist be schadigt. f Wenn das Gerat deutliche Anzeichen eines Defektes aufweist.

16. Bei Reparaturen durfen nur O rginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet werden. Der Einsatz von ungeeigneten Ersatztei len kann eine weitere Beschadigun g hervorrufen.

17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit stell en Sie die Betriebssicherheit des Gerates sicher.

18. Zum NetzanschluB dieses Ge rates ist eine geprufte Leitung zu verwen den. Fur einen Nennstrom bis 6A und einem Gerategewicht groBer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm 2 einzuse tzen. Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 betragt 70dB(A) oder weniger.

Restricted Rights Legend

Use, duplication, or di sclosure by the United States Gover nment is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clau se at DFARS 252.227-7013.

Notwithstanding any other license agreement that may pertain to, or accompany the del ivery of, this computer software, the right s of the United States Go vernment regarding its use, reproduction, and disclosure are as set forth in the Commercial Computer Sof tware-Res tricted Rights clause at FAR 52.22 7-19.

Statement of Conditions

In the interest of improving intern al design, o p erational function, and/or reliability, No rtel Networks NA Inc. res erves the right to m ake changes t o the products described in th is document without notice.

Nortel Net w orks NA Inc. does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herei n.

Portions of the code in this software product are Copyright © 1988, Regents of the University of California. All rights reserv ed. Redistribution and use in source and binary forms of such portions are permitted, provided that the above copyrig ht not ic e an d th is par agr ap h ar e dupli ca te d in all su ch f or ms and th at a ny doc um enta ti on, adve rt is in g mat eria ls , and other m ateri al s rel at ed to such di stri b utio n and use ac know led ge t hat s uch p or tions of t he sof t war e we re de v el oped by the U niversity of California, Berkeley. The name of the University may not be used to endorse or promote pro ducts deri ved from such portions of the software with out specif ic prior wri tten permission.

SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

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Nortel Networks NA Inc. Software License Agreement

NOTICE: Please carefully read this lic ense agreement before copyi ng or using the accom panying sof tware or instal ling the hardw are unit w ith pre-enabled softwa re (each of which is referred to as “Softwar e” in this Ag reement). BY COPYING OR USING THE SOFTWARE, YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT. THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH NORTEL NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE. If you do not accept these ter ms and conditions, return the product, unused and in the or iginal ship ping contain er, within 30 days of purchase to obtain a credit for the full purchase price.

1. License Grant. Nortel Networks NA Inc. (“Nortel Networks”) grants t h e end user of the Software (“Licensee”) a

personal, no ne xcl usi v e , nontr ans fe rabl e li cense: a) t o use th e Softw are eit her on a si ngl e compu ter or, if applicable, on a single authorized device identified by host ID, for which it was originally acquired; b) to copy the Software solely for backup purposes in support of autho rized use of th e Software; and c) to use and copy the associa ted user manual solely in support of authorized use of the Software by Licensee. This license appli es to the Software only and does not extend to Nortel Networks Agent software or other Nortel Networks software products. Nortel Networks Agent software or other Nortel Networks software products are licensed for us e under the terms of the applicable Nortel Networks NA In c. Software License Agreement that accompa nies such so ftware and upon payment by the end user of the applicable license fees for such software.

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Nortel Net w orks and/or its licensors retain all ti tle and ownership in both the Software and us er manuals, inc luding any re visions made b y N ortel Networks or its licensors. The copyright notice must be reproduced and included with any copy of any p orti on of the Soft war e or user manual s. Lic ensee m ay not m odify, translate , decom pile , di sass embl e, use for any competitive analysis, reverse engineer, distribute, or create derivative works from the Software or user manuals or any copy, in whole or in part. Except as e xpressly pro vided in this Ag reement, Licensee may not copy or transfe r the Softwar e or user manuals, in whole or in p art. The Softw are and user manuals embody Nortel Networks’ and its licensors ’ confiden tial and proprietary intellectual property . Licensee shall not sublicense, assign, or otherwise disclose to any third party the Software, or any information abou t the operation, design, per formance, or implementation of the Software and user manuals that is confidential to Nortel Networks and its licensors; however, Licensee m ay grant p erm ission to its consultants, subcontractors, and agents to use the Software at Licensee’s facility, provided they have agreed to u se the Softwar e only in accordance with the terms of this l icense.

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instal led and operate d on N o rtel Networ ks hardware or other equipm ent it is originally licensed for , to function substantially as described in its accompanying user manual duri ng its warranty period, whic h begins on the date Softwar e is f ir st shi ppe d to Licen see . I f any it em of Soft wa re fai l s to so func ti on during i ts warr anty pe ri od, as the so le remedy Norte l Net wor ks will at it s discr et ion pro vi de a suita bl e fix , pat ch , or worka ro und fo r the p roble m that may be included in a future Software release. Nortel Ne tworks further warrants to License e that the media on which the Softwar e is provided will be free from defects in materia ls and wor km anship unde r normal use for a period of 90 days from the date Software is first shipped to Licensee. Nortel Networks wil l replace defective media at no charge if it is returned to Nortel Networks during the warranty period along with proof of the date of ship m ent. This warr anty does not apply if the media has been dam aged as a result of accident, misuse, or abuse. The Licensee assumes all resp on s ib ility for se le ction of the S oftware to ac hieve Licensee’s intended results and for the inst al la tion, use , an d results obtained from the Software. No rtel Networ ks does not warra nt a) that the functions contai ned in the softw are will meet the Licensee’s requirements, b) that the Software will operate in the hardware or software combinations that the Licensee may select, c) that the operation of th e Software will be uninterrupted or error free, or d) that all defects in the ope rati on of th e Sof twar e wi ll be c orr ecte d. Nort el Net works i s n ot o bli g ated t o re medy an y Sof tw are de fe ct tha t cannot be re produced with the latest Software release. These warranties do not apply to the Softw are if it has been (i) altere d, except b y Nortel Networks or in accord ance with its instructions; (ii) used in conjunction w ith another vendor’s product, resulting in the defect; or (iii ) damaged by improper environment, abuse, misuse , accident, or negligence. THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED, INCLUDING WITHOUT LI MITA TION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Licensee is responsible for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconst ruct lost or altered files, data, or programs

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4. Limitation of liability. IN NO EVENT WILL NORTEL NETWORKS OR ITS LICENSORS BE LIABLE FOR

ANY COST OF SUBSTITUTE PROCUREMENT; SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES; OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISI NG OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE, EVEN IF NORTEL NETW ORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF NORTEL NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO NOR TEL NETW ORKS FOR THE SOFTWARE LICENSE.

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or on be half of the United States Gov ernment. Th e Software and docume ntation are commercial products, licensed on the open market at market prices, and were develo ped entirely at private expense and without the use of any U.S. Government funds. The license to the U.S. Gov ernment is granted only with restricted rights, and use, dupli cation, or disclos ure by the U.S. Go vernment is subject to the restrictions set forth in subpara graph (c)(1) of the Commercial Computer Sof tware––Res tricted Rights clause of FAR 52.227-19 and the limitations set out in this license for civilian agencies , and subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause of DFARS

252.227- 7013, for agencies of the Depart m ent of Defense or their successors, whichever is applicable.

6. Use of Software in the European Community. This pr ov ision applies to all So f tw ar e acquire d for use wi th in the

European Community. If Licensee uses the Software within a country in the Euro pean Community, the Software Directive enact ed by the Council of European Communities Dire ctive dated 14 May, 1991, wil l apply to the examination of the Soft w are to facilitate interoperabili ty. Licensee agrees to notify No rtel Networks of any such intended examination of the Software and may proc ure support an d assistance from Nortel Networks.

7. Term and termination. This license is effective until terminated; however, all of the restrictions with respect to

Nortel N etworks’ c opyright in the Software and user manuals will cease being effective at the date of expiration of the Nortel Networks copyright; those restrictions relating to use and disclo sure of Nort el Networks’ confidential information shall continue in effect. Licensee may terminate this license at any time. The lice nse will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license. Upon termination for any reason, Licensee will im mediately des troy or retu rn to Nortel Networks the Softw are, user manuals, and all copies. Nortel Networks is not liable to Licensee for damages in any form so lely by reas on of the termination of this license.

8. Export and Re-export. Licensee agrees not to export, directly or indirectly, the Software or related technical data

or information without first obtaining any required export licenses or other governmental approvals. Without limiting the foregoing, Licensee, on behalf of itself and its subsidiaries and affiliates, agrees that it w ill not, wit h out fir st obtaining all export licenses and approvals required by the U.S. Gove rnment: (i) export, re-export, transfer, or divert any such Sof tware or technical data, or any direct product thereof, to any country to which such exports or re-exports are rest ricted or embargoed under United States export control laws and regulations, or to an y national or resident of such rest ricted or embargoed countries; or (ii) provide the Software or related technical data or information to any military end user or for any military end use, includ ing the design, development, or produc tion of any chem ical, nuclear, or biological weapons .

9. General. If any provision of this Agreement is held to be invalid or unenforceable by a court of competent

jurisdiction, the remainder of the provisions of this Agreement shall remain in full force and effect. This Agreement will be go verned by th e laws of the st ate of California.

Should you have any questions concerning this Agreement, contact Nortel Networks, 4401 Great America Parkway, P.O. Box 58185, Santa Clara , California 95054-8185.

LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT, UNDERSTANDS IT, AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS. LICENSEE FUR THER AGREES THAT THIS AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN NORTEL NETWORKS AND LICENSEE, WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT. NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST NORTEL NETWORKS UNLESS NORTEL NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT, INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT.

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Preface

Purpose ............................................................................................................................ xi

Audience ...........................................................................................................................xii

Hard-Copy Technical Manuals .......................................... ....... ....... ..... ....... .. .......... ....... ...xii

How to Get Help ..............................................................................................................xiii

Chapter 1 Introduction

BayStack 70 Series 10/100 Ethe r net Switch Overview ..................................................1-1

Physical Description .......................................................................................................1-2

Fr o n t Panel ............. ......... .......... ................... ......... .......... ......... ................... .......... ...1-2

RJ-45 10BASE-T /1 0 0 BASE-TX Ethernet Po rts ..... .......... ......... .......... ...............1-4

MDI/MDI-X Button .... .......... ................... ......... .......... ......... ................... .......... ...1-4

LEDs ..................................................................................................................1-5

Rear Panel ...............................................................................................................1-6

Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and

BayStack 70-16T 10/100 Ethernet Switch ....................................................... 1-6

Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch ............................1-7

DC Power Adapter ............................. .......... ......... .......... ................... ......... .......... ...1-8

Cable Holde r ............................. ......... .......... ................... ......... .......... ......... .............1-8

Cooling Fans ............................................................................................................1-9

Features ..........................................................................................................................1-9

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Chapter 2 Network Configuration

Benefits of Using Switching Technology ................................................ ....... .......... .. ......2-1

Types of Ethernet Switches ......................................................................................2-2

Desktop Switchi n g ......................... ......... ................... ......... .......... ......... ................... ......2-3

Segment Switching .........................................................................................................2-4

Extending a Network ......................................................................................................2-6

Bridging from 10BASE-T to 100BASE-TX Networks ......................................................2-7

Power Workgroups .........................................................................................................2-8

Chapter 3 Installation

Package Contents ..........................................................................................................3-1

Operating Environment ...................................................................................................3-2

Power Specifications .......................................................................................................3-2

Installing the Switch ........................................................................................................3-3

Installing the BayStack 70 Series 10/100 Ethernet Switch on a Flat Surface ..........3-3

Mounting the BayStack 70-24T 10/100 Ethernet Switch in a Rack ..........................3-4

Connecting Devices to the Switch ..................................................................................3-5

Connecting Power ...........................................................................................................3-6

Verifyin g Installation ......................... ......... .......... ................... ......... .......... ......... .............3-7

Checking the Diagnostic Displays ........................................... ....... ..... ....... ....... ....... ..... .3-8

Chapter 4 Troubleshooting

Using the LED Display ....................................................................................................4-1

Appendix A Technical Specifications

Product Specifications ...................................................................................................A-1

Appendix B Cables and Connectors

10BASE-T/1 0 0B ASE- TX UTP Cable .................. ................... ......... .......... ......... ............B-1

Straight-Through and Crossover Cables .......................................................................B-2

Index

viii

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Figures

Figure 1-1. Front Panel of the BayStack 70-8T 10/100 Ether net Switch ....................1-3

Figure 1-2. Front Panel of the BayStack 70-16T 10/100 Ether net Swi tch ..................1-3

Figure 1-3. Front Panel of the BayStack 70-24T 10/100 Ether net Swi tch ..................1-3

Figure 1-4. BayStack 70-24T 10/100 Ethernet Switch LEDs .....................................1-5

Figure 1-5. Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and

BayStack 70-16T 10/100 Ethernet Switch ..........................................1-7

Figure 1-6. Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch ..................1-7

Figure 1-7. DC Power Adapter ................................................................................... 1-8

Figure 2-1. Using a BayStack 70 Series 10/100 Ethernet Switch as a

Desktop Switch ...................................................................................2-3

Figure 2-2. Using a BayStack 70 Series 10/100 Ethernet Switch as a

Segment Switch ..................................................................................2-5

Figure 2-3. Using BayStack 70 Series 10/100 Ethernet Switches for Network

Extension ............................................................................................2-6

Figure 2-4. Bridging 10 Mb/s Networks to 100 Mb/s Networks ..................................2-7

Figure 2-5. Power Workgroup Connections ................................................................ 2-8

Figure 3-1 . Installing the Switch in a Rack ................ .... .. . .... . .. .... . .. .... . .. .... . .... . .. .... . .. ..3-5

Figure 3-2. BayStack 70-24T 10/100 Ethernet Switch LED Display ...........................3-8

Figure B-1. Straight-Through Twisted-Pair Cable ......................................................B-2

Figure B-2. Crossover Twisted-Pair Cable .................................................................B-2

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Tables

Table 1-1. Description of Switch and Port Status LEDs ............................................1-6

Table 1-2. MAC Address Quantities .......................................................................... 1-9

Table 1-3. Buffer Sizes ............................................................................................1-10

Table 1-4. External Power Adapters ....................................................................... 1 -11

Table 3-1. Description of Switch and Port Status LEDs ...........................................3-9

Table A- 1. Technical Specifications ...................... ................... ......... .......... ......... ..... A-1

Table B-1. RJ-45 Connector Pin Assignments .........................................................B-1

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Preface

Congratulations on your purchase of a BayStack 70-8T 10/100 Ethernet Switch, BayStack 70-16T 10/100 Ethernet Switch, or BayStack 70-24T 10/100 Ethernet Switch. These swi tc hes pro vide eigh t, 16, or 24 por ts, r espec tiv e ly. Switches in the BayStack™ 70 Series provide you with low-cost network solutions and let you easily upgrade your existing 10 megabit per second (Mb/s) Ethernet network to 100 Mb/s Fast Ethernet. The BayStack 70-16T 10/100 Ethernet Switch workgroup switches. The as a desktop switc h as well , b ut it als o oper ates as a se gment switc h when in stalle d in a wiring closet.

BayStack 70-8T 10/100 Ethernet Swit ch

are designed for use as desktop or

BayStack 70-24T 10/100 Ethernet Switch

and

can be used

Purpose

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A BayStack 70 Series 10/100 Ethernet Switch is easy to use and maintain, and it provides seamless plug-and-play installation into your network. All BayStack 70 Series 10/100 Ethernet Swi tch models are designed to support workgroups operating at 10 Mb/s and/or 100 Mb/s.

In this guide, the BayStack 70-8T 10/100 Ethernet Switch, BayStack 70-16T 10/ 100 Ethernet S witch, and BaySta ck 70- 24T 10/100 Ethe rnet S witch are referred to collectively as the BayStack 70 Series 10/100 Ethernet Switch. Each model is referred to specifically when features and functions are unique to that particular model.

This guide provides information about using the features and capabilities of the BayStack 70 Series 10/100 Ethernet Switch.

xiii

Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches

Aud i en ce

This guide is intended for Ethernet local area network (LAN) administrators with the follo wing background:

• Working knowledge of PC terminology and operation

• Working knowledge of 10BASE-T (Ethernet) and 100BASE-TX (Fast Ethernet) operations

™

• Nortel Networks

network experience

Hard-Copy Technical Manuals

You can print selected technical manuals and release notes free, directly from the Internet. Go to support.baynetw ork s.c om/library/tpubs/. Find the product for which you need documentation. Then locate the specific cate gory and model or version for your hardw are or softwa re product. Using Adobe Acrobat Reader, you can open the manuals and release notes, search for the sections you need, and prin t them on most standard printers. You can download Acrobat Reader free from the Adobe Systems Web site, www.adob e.com.

xiv

You can purchase selected documentation sets, CDs, and technical publications through the collater al catalog. The catalog is located on the World Wide Web at support.baynetworks.com/catalog.html and is divided into sections arranged alphabetically:

• The “CD ROMs” section lists available CDs.

• The “Guides/Books” section lists books on technical topics.

• The “Technical Manuals” section lists a vailable printed docu menta tion sets.

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How to Get Help

If you purchase d a se rvi ce con t ract fo r your Nortel Networks product from a distributor or authorized reseller, contact the technical support staff for that distributor or reseller for assistance.

If you purc hased a Nortel Ne tworks service program, contact one of the foll owing Nortel Networks Technical Solutions Centers:

T echnical Solutions Center Telephone Number

Billerica, MA 800-2LANWAN (800-252-6926) Santa Clara, CA 800-2LANW AN (800-252-6926) Valbonne, France 33-4-92-96-69-68 Sydney, Australia 61-2-9927-8800 Tokyo, Japan 81-3-5402-7041

Preface

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Chapter 1

Introduction

This chapter gives you an overview of the three BayStack 70 Series 10/100 Ethernet Switches. The chapt er describes the front and rear panels of each switch and explains in detail the components on each of the panels. The chapter lists the key feature s of the switches.

BayStack 70 Series 10/100 Ethernet Switches Ove rview

The BayStack 70-8T, 70-16T, a nd 70-24T 10/100 Ethernet switches are autosensing 10/100 Mb/s switc hes. The BayStack 70-8T 10/100 Ethernet Switch and BayStack 70-16T 10/100 Ethernet Switch are intended for use on desktops or other level surfaces. The BayStack 70-24T 10/100 Ethernet Switch can be used either as a desktop switch or as a segment switch in a wiring closet environment, mounted in a standard 19-inch equipm ent rack.

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All ports on a BayStack 70 Series 10/100 Ethernet Switches can autosense their transmission speed to match the best speeds of the connected stations. BayStack 70 Series 10/100 Ethernet Swit ches ports operate at speeds up to 100 Mb/s. Each port can autonegotiate with the connected devic e to operate in full-duplex mode. If the connected de vi ce is ope rating a t half- duple x mode onl y, or does not have the capability to partic ipate in the autonegotiation process, the port will default to half-duple x mode.

1-1

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