Cabletron Systems SmartSTACK ELS100-S24TX2M User manual

9033260-01
SmartSTACK
ELS100-S24TX2M
FAST ETHERNET SWITCH
USER GUIDE

Notice
9 033 26 0-01 i
NOTICE
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whetherany such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, ORCONSEQUENTIAL DAMAGESWHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUTOF OR RELATED TO THIS MANUAL OR
THE INFORMATIONCONTAINED IN IT, EVEN IFCABLETRON SYSTEMSHASBEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OFSUCH
DAMAGES.
2000 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in Taiwan, R.O.C.
OrderNumber: 9033260-01 January 2000
Cabletron, Cabletron Systems, and SmartSTACK are trademarks orregistered trademarks of
Cabletron Systems, Inc.
Microsoft, Windows, Windows 95,Windows 98, andWindows NT areeithertrademarks or registered
trademarks of Microsoft Corporation.
Netscape and Netscape Navigator are trademarks of Netscape Communications Corporation.
All otherproduct names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
Only qualified personnel should perform installation
procedures.

Notice
ii 90 33 260 -01
FCC NOTICE
This device complies with Part 15 of the FCC rules. Operation is subject to thefollowing two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interferencethat may cause undesired operation.
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 operatedinacommercial environment.
This equipment uses, generates, and can radiate radio frequency energy and if not installed in
accordance with the operator’s manual, may cause harmful interferenceto radio communications.
Operation ofthis equipment in a residential area is likely to causeinterferenceinwhich case the user
will be required to correct the interference at his own expense.
WARNING: Changes or modificationsmade to this device which are not expressly approved by the
party responsible for compliance could void theuser’s authority to operate theequipment.
INDUSTRY CANADA NOTICE
This digital apparatus does not exceed the Class A limits forradio noise emissions from digital
apparatus set out in theRadio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.
VCCI NOTICE
This is a Class A product based on the standard of the Voluntary Control Council forInterference by
Information Technology Equipment (VCCI). Ifthis equipment is used in adomesticenvironment,
radio disturbance may arise. When such troubleoccurs, the usermay be required to take corrective
actions.

Notice
9 033 26 0-01 iii
CABLETRON SYSTEMS,INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE FOLLOWING
GEOGRAPHICAL REGIONS:
CANADA
MEXICO
CENTRAL AMERICA
SOUTH AMERICA
BEFORE OPENING ORUTILIZING THE ENCLOSEDPRODUCT,
CAREFULLY READ THIS LICENSE AGREEMENT.
This document is an agreement (“Agreement”) between You, theend user, and Cabletron
Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron
softwareprogram (“Program”)in the package. The Program may be contained in firmware, chips or
othermedia. UTILIZING THE ENCLOSED PRODUCT, YOUAREAGREEING TOBECOME
BOUND BYTHE TERMSOF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND
THE LIMITATION OFWARRANTY ANDDISCLAIMER OF LIABILITY. IFYOU DO NOT
AGREE TO THE TERMS OFTHIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO
CABLETRONOR YOUR DEALER,IF ANY, WITHINTEN(10)DAYS FOLLOWING THE DATE
OFRECEIPTFOR A FULL REFUND.
IF YOU HAVE ANYQUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
1. LICENSE. You have theright to useonly theone (1)copy of the Program provided in this
package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce ortransmit any part of the Program except as permitted by the
Copyright Act ofthe United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, ordisassemble the
Program.
3. APPLICABLE LAW. This LicenseAgreement shall be interpreted and governed under the
laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and
venue of the NewHampshirecourts.
4. EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliatesare subject to
regulation by agencies ofthe U.S. Government, including theU.S. Department of Commerce, which
prohibit export or diversionofcertain technical productstocertain countries,unless a licenseto export
theproduct is obtainedfrom the U.S. Government oran exception from obtaining suchlicensemay be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations, You agreethat You are a civil end user of the Program
and agree that You will use theProgram forcivil end uses only and not for military purposes.

Notice
iv 90 33 260 -01
If the Program is exported from the United States pursuant to the License Exception TSR under
the U.S. Export Administration Regulations, in addition to therestriction on transferset forth in
Sections 1 or 2of this Agreement, You agreenot to (i)reexport or release the Program, the source
code for the Program ortechnologytoa national of acountryinCountryGroups D:1 orE:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic ofChina,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
orE:2 (as defined herein)the direct product oftheProgram orthetechnology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or(iii)if the direct product of the technology is a complete plant o r any major
component of aplant, export to Country Groups D:1 orE:2 thedirect product of theplant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. Theenclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a)through (d)of the Commercial Computer
Software-Restricted Rights Clauseand its successors, and (iii) in all respects is proprietary data
belongingto Cabletron and/orits suppliers.For Department ofDefenseunits,the Product is considered
commercial computersoftwarein accordance withDFARS section 227.7202-3 anditssuccessors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.
6. EXCLUSIONOFWARRANTY. Except as may be specifically provided by Cabletron in
writing, Cabletron makes no warranty, expressed orimplied, concerning the Program (including its
documentation and media).
CABLETRONDISCLAIMSALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO
YOU BY CABLETRON IN WRITING, EITHER EXPRESSOR IMPLIED, INCLUDING BUT
NOT LIMITED TO IMPLIED WARRANTIESOFMERCHANTABILITYAND FITNESSFOR A
PARTICULAR PURPOSE, WITH RESPECT TOTHE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYINGHARDWARE.
7. NO LIABILITY FOR CONSEQUENTIALDAMAGES. INNO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGESWHATSOEVER
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OFBUSINESS, PROFITS,
BUSINESSINTERRUPTION, LOSS OF BUSINESSINFORMATION, SPECIAL, INCIDENTAL,
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHERLOSS)ARISING OUT OF THE
USE OR INABILITYTO USE THIS CABLETRON PRODUCT, EVENIF CABLETRON HAS
BEENADVISEDOF THE POSSIBILITYOF SUCH DAMAGES. BECAUSESOMESTATESDO
NOT ALLOWTHEEXCLUSIONOR LIMITATIONOFLIABILITYFORCONSEQUENTIALOR
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIESINSOME INSTANCES,THE ABOVELIMITATIONAND EXCLUSIONSMAY
NOT APPLY TO YOU.

Notice
9 033 26 0-01 v
CABLETRON SYSTEMS SALES AND SERVICE, INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT: THISLICENSEAPPLIESFOR USE OF PRODUCT IN THE UNITED
STATESOFAMERICA AND BY UNITED STATESOF AMERICA
GOVERNMENT END USERS.
BEFORE OPENING ORUTILIZING THE ENCLOSEDPRODUCT,
CAREFULLY READ THIS LICENSEAGREEMENT.
This document is an agreement (“Agreement”) between You, theend user, and Cabletron Systems
Sales and Service, Inc. (“Cabletron”)that sets forth yourrights and obligations with respect to the
Cabletron software program (“Program”) in thepackage. The Programmay be contained in firmware,
chips orother media. UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO
BECOME BOUNDBY THE TERMS OFTHIS AGREEMENT, WHICH INCLUDES THE
LICENSE AND THELIMITATION OFWARRANTYAND DISCLAIMER OF LIABILITY. IF
YOU DONOTAGREE TOTHE TERMS OF THIS AGREEMENT, RETURN THEUNOPENED
PRODUCT TO CABLETRON OR YOUR DEALER, IFANY, WITHIN TEN (10) DAYS
FOLLOWING THE DATE OF RECEIPT FORA FULL REFUND.
IF YOU HAVE ANYQUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
1. LICENSE. You have theright to useonly theone (1)copy of the Program provided in this
package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce ortransmit any part of the Program except as permitted by the
Copyright Act ofthe United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, ordisassemble the
Program.
3. APPLICABLE LAW. This LicenseAgreement shall be interpreted and governed under the
laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and
venue of the NewHampshirecourts.
4. EXPORT REQUIREMENTS. You understand that Cabletronand its Affiliates are subject to
regulation by agencies ofthe U.S. Government, including theU.S. Department of Commerce, which
prohibit export or diversionofcertain technical productstocertain countries,unless a licenseto export
theproduct is obtainedfrom the U.S. Government oran exception from obtaining suchlicensemay be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations, You agreethat You are a civil end user of the Program
and agree that You will use theProgram forcivil end uses only and not for military purposes.

Notice
vi 90 33 260 -01
If theProgram is exported from the United States pursuant to theLicenseExceptionTSR under
the U.S. Export Administration Regulations, in addition to therestriction on transferset forth in
Sections 1 or 2of this Agreement, You agreenot to (i)reexport or release the Program, the source
code for the Program ortechnologytoa national of acountryinCountryGroups D:1 orE:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic ofChina,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
orE:2 (as defined herein)the direct product oftheProgram orthetechnology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or(iii)if the direct product of the technology is a complete plant o r any major
component of aplant, export to Country Groups D:1 orE:2 thedirect product of theplant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. Theenclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a)through (d)of the Commercial Computer
Software-Restricted Rights Clauseand its successors, and (iii) in all respects is proprietary data
belongingto Cabletron and/orits suppliers.For Department ofDefenseunits,the Product is considered
commercial computersoftwarein accordance withDFARS section 227.7202-3 anditssuccessors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.
6. EXCLUSIONOFWARRANTY. Except as may be specifically provided by Cabletron in
writing, Cabletron makes no warranty, expressed orimplied, concerning the Program (including its
documentation and media).
CABLETRONDISCLAIMSALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO
YOU BY CABLETRON IN WRITING, EITHER EXPRESSOR IMPLIED, INCLUDING BUT
NOT LIMITED TO IMPLIED WARRANTIESOFMERCHANTABILITYAND FITNESSFOR A
PARTICULAR PURPOSE, WITH RESPECT TOTHE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYINGHARDWARE.
7. NO LIABILITY FOR CONSEQUENTIALDAMAGES. INNO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGESWHATSOEVER
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OFBUSINESS, PROFITS,
BUSINESSINTERRUPTION, LOSS OF BUSINESSINFORMATION, SPECIAL, INCIDENTAL,
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHERLOSS)ARISING OUT OF THE
USE OR INABILITYTO USE THIS CABLETRON PRODUCT, EVENIF CABLETRON HAS
BEENADVISEDOF THE POSSIBILITYOF SUCH DAMAGES. BECAUSESOMESTATESDO
NOT ALLOWTHEEXCLUSIONOR LIMITATIONOFLIABILITYFORCONSEQUENTIALOR
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIESINSOME INSTANCES,THE ABOVELIMITATIONAND EXCLUSIONSMAY
NOT APPLY TO YOU.

Notice
9 033 26 0-01 vii
CABLETRON SYSTEMS LIMITED
PROGRAM LICENSE AGREEMENT
IMPORTANT: THIS LICENSE APPLIES FOR THE USE OF THE PRODUCT IN THE
FOLLOWING GEOGRAPHICAL REGIONS:
EUROPE
MIDDLE EAST
AFRICA
ASIA
AUSTRALIA
PACIFIC RIM
BEFORE OPENING ORUTILIZING THE ENCLOSEDPRODUCT,
CAREFULLY READ THIS LICENSEAGREEMENT.
This document is an agreement (“Agreement”) between You, theend user, and Cabletron
Systems Limited (“Cabletron”) that sets forth your rights and obligations with respect to the
Cabletron software program (“Program”) in thepackage. The Programmay be contained in firmware,
chips orother media. UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO
BECOME BOUNDBY THE TERMS OFTHIS AGREEMENT, WHICH INCLUDES THE
LICENSE AND THELIMITATION OFWARRANTYAND DISCLAIMER OF LIABILITY. IF
YOU DONOTAGREE TOTHE TERMS OF THIS AGREEMENT, RETURN THEUNOPENED
PRODUCT TO CABLETRON OR YOUR DEALER, IFANY, WITHIN TEN (10) DAYS
FOLLOWING THE DATE OF RECEIPT FORA FULL REFUND.
IF YOU HAVE ANYQUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON
SYSTEMS [phone]. Attn: Legal Department.
1. LICENSE. You have theright to useonly theone (1)copy of the Program provided in this
package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce ortransmit any part of the Program except as permitted by the
Copyright Act ofthe United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, ordisassemble the
Program.
3. APPLICABLE LAW. This LicenseAgreement shall begoverned in accordancewith English
law. The English courts shall have exclusive jurisdiction in the event ofany disputes.
4. EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliatesare subject to
regulation by agencies ofthe U.S. Government, including theU.S. Department of Commerce, which
prohibit export or diversionofcertain technical productstocertain countries,unless a licenseto export
theproduct is obtainedfrom the U.S. Government oran exception from obtaining suchlicensemay be
relied upon by the exporting party.
If the Program is exported from the United States pursuant to the License Exception CIV under
the U.S. Export Administration Regulations, You agreethat You are a civil end user of the Program
and agree that You will use theProgram forcivil end uses only and not for military purposes.

Notice
viii 90 33 260 - 01
If theProgram is exported from the United States pursuant to theLicenseExceptionTSR under
the U.S. Export Administration Regulations, in addition to therestriction on transferset forth in
Sections 1 or 2of this Agreement, You agreenot to (i)reexport or release the Program, the source
code for the Program ortechnologytoa national of acountryinCountryGroups D:1 orE:2 (Albania,
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic ofChina,
Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other
countries as may be designated by the United States Government), (ii) export to Country Groups D:1
orE:2 (as defined herein)the direct product oftheProgram orthetechnology, if such foreign
produced direct product is subject to national security controls as identified on the U.S. Commerce
Control List, or(iii)if the direct product of the technology is a complete plant o r any major
component of aplant, export to Country Groups D:1 orE:2 thedirect product of theplant or a major
component thereof, if such foreign produced direct product is subject to national security controls as
identified on the U.S. Commerce Control List or is subject to State Department controls under the
U.S. Munitions List.
5. UNITED STATES GOVERNMENT RESTRICTED RIGHTS. Theenclosed Product (i)
was developed solely at private expense; (ii) contains “restricted computer software” submitted with
restricted rights in accordance with section 52.227-19 (a)through (d)of the Commercial Computer
Software-Restricted Rights Clauseand its successors, and (iii) in all respects is proprietary data
belongingto Cabletron and/orits suppliers.For Department ofDefenseunits,the Product is considered
commercial computersoftwarein accordance withDFARS section 227.7202-3 anditssuccessors, and
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.
6. EXCLUSIONOFWARRANTY. Except as may be specifically provided by Cabletron in
writing, Cabletron makes no warranty, expressed orimplied, concerning the Program (including its
documentation and media).
CABLETRONDISCLAIMSALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO
YOU BY CABLETRON IN WRITING, EITHER EXPRESSOR IMPLIED, INCLUDING BUT
NOT LIMITED TO IMPLIED WARRANTIESOFMERCHANTABILITYAND FITNESSFOR A
PARTICULAR PURPOSE, WITH RESPECT TOTHE PROGRAM, THE ACCOMPANYING
WRITTEN MATERIALS, AND ANY ACCOMPANYINGHARDWARE.
7. NOLIABILITY FORCONSEQUENTIAL DAMAGES. IN NOEVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGESWHATSOEVER
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OFBUSINESS, PROFITS,
BUSINESSINTERRUPTION, LOSS OF BUSINESSINFORMATION, SPECIAL, INCIDENTAL,
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHERLOSS)ARISING OUT OF THE
USE OR INABILITYTO USE THIS CABLETRON PRODUCT, EVENIF CABLETRON HAS
BEENADVISEDOF THE POSSIBILITYOF SUCH DAMAGES. BECAUSESOMESTATESDO
NOT ALLOWTHEEXCLUSIONOR LIMITATIONOFLIABILITYFORCONSEQUENTIALOR
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED
WARRANTIESINSOME INSTANCES,THE ABOVELIMITATIONAND EXCLUSIONSMAY
NOT APPLY TO YOU.

Notice
9 033 26 0-01 ix
DECLARATION OF CONFORMITY
Application of Council Directive(s): 89/336/EEC
73/23/EEC
Manufacturer’s Name: Cabletron Systems, Inc.
Manufacturer’s Address: 35 Industrial Way
PO Box 5005
Rochester, NH 03867
European Representative Name: Mr. J. Solari
European Representative Address: Cabletron SystemsLimited
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG14 2PZ, England
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EC Directive 73/23/EEC
EN 55022
EN 50082-1
EN 60950
Equipment Type/Environment: Networking Equipment, for use in a
Commercial or Light Industrial
Environment.
We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged
with this notice conforms to the above directives.
Manufacturer Legal Representative in Europe
Mr. Ronald Fotino Mr. J. Solari
___________________________________ ___________________________________
Full Name Full Name
Compliance Engineering Manager Managing Director - E.M.E.A.
___________________________________ ___________________________________
Title Title
Rochester, NH, USA Newbury, Berkshire, England
___________________________________ ___________________________________
Location Location

90 33 260 -01 Table of Contents xi
TABLE OF CONTENTS
PREFAC E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XIII
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x iii
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Message Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Keyboard Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Other Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv
1. PR ODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Optional Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Feature Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
IEEE 802.1D Bridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Spanning Tree Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Frame Buffering and Frame Latency . . . . . . . . . . . . . . . . . . . . . . . . 7
Software Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Non-Volatile Param eter Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Configuration and Management Interfaces . . . . . . . . . . . . . . . . . . . 8
RMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Auto-negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
BootP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Full Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Virtual LANs (VLANs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Class of Servic e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Port Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Application Ex amples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Client /Serv er Network Application . . . . . . . . . . . . . . . . . . . . . . . . . 15
Local Backbone Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2. I NSTAL LA TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Inspecting Your Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mounting the Switch or Stack on a Table or Shelf . . . . . . . . . . . . . . . . 18
Mounting the Switch in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connecting Switches to the Stack’s Backplane . . . . . . . . . . . . . . . . . . 20
Stacking Module and Interconnect Cables . . . . . . . . . . . . . . . . . . 20
Installing an Optional Module into the Switch . . . . . . . . . . . . . . . . . . . . 21

xii Table of Contents ELS100-S24TX2M
Connecting a Terminal to the Console Port . . . . . . . . . . . . . . . . . . . . . 22
Console Port (Out-of-Band) Connections . . . . . . . . . . . . . . . . . . . 22
Remote Management via the Console Port . . . . . . . . . . . . . . . . . 23
In-Band Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Management Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Powering the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Network Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fiber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10Base-T/100Base-TX Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
100Base-FX/1000Base-SX/LX Fiber Ports . . . . . . . . . . . . . . . . . . . . . 28
APPENDIX A. TECHNICAL SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . 29
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Data Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Environmental Specif icat ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Elect rical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Physical Specificat ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10Base-T and 100Base-TX Ports . . . . . . . . . . . . . . . . . . . . . . . . . 31
MDI/MD I-X Cros sover C able Wiring . . . . . . . . . . . . . . . . . . . . . . . 32
Power Cord Set Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Country-Specific Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 33
APPENDIX B. FLOW CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
APPENDIX C. ACRONYMS & ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . 37
INDEX

90 33 260 -01 Preface xiii
PREFACE
Purpose
This guideprovides information about thefeatures and applications of the
Cabletron Systems SmartSTACK ELS100-S24TX2M stackable switch
system.
Audience
This guide is intended for Ethernet Local Area Network (LAN)
administrators and Management Information Systems (MIS) personnel
with the following background:
•Working knowledge of Ethernet LANs
•Familiarity with Transmission Control Protocol/Internet Protocol
(TCP/IP) and Simple Network Management Protocol (SNMP)
Conventions
This section describes the conventions used in this guide.
Message Format s
Two types of messages, identified by icons, appear in the text:
Keyboard Entries
This guide uses the following conventions for keyboard entries:
•When you read “enter,” type the text and press the [Enter] key.
•Example: Enter the Gateway IP address and press the [Enter] key.
•When you read “select,” highlight the menu item and press the [Enter]
key.
A note informs you of special circumstances.
A caution indicates the possi bility of equipment damage.

xi v P re face ELS100-S24TX2M
Other Conventions
This guide uses the following typographical conventions:
•Initial Caps Menu titles and console menu selections.
•[Enter] Used to designate the Enter or Return key.
•courier font Screen messages and user prompts.
•Selection Describes a user-configurable user interface item.
•Field Describes a read-only information item.
Organization
Chapter 1. Product Overview: Describes the features of the switch, front
and rear panel components and application examples.
Chapter 2. Installation: Describes the content of your switch shipment,
lists site requirements, and provides mounting instructions. Instructions
for making connections and powering up the switch are provided as well.
Appendix A. Technical Specifications: Provides a list of standards
compliance and certifications as well as physical and operational
specifications.
Appendix B. Flow Control: Describes how the flow control features are
used to provide a mechanism for protecting the switch from overload
conditions and to keep additional traffic off the network.
Appen di x C. Acronyms and Abbreviations: Provides definitions for a
list of common acronyms and abbreviations used within the installation
guide and the networking industry.

90 33 260 -01 Product Overview 1
1. PRODUCT OVERVIEW
This chapter provides the following information:
•Product Description
•Features
•Front and Rear Panel Component Descriptions
•Feature Summaries
•Application Example
Description
This installation guide describes Cabletron Systems’ SmartSTACK
ELS100-S24TX2M Fast Ethernet switch. The switch provides 24
10Base-T/100Base-TX ports, plus two slots for optional slide-in
100Base-FX, 1000Base-SX or 1000Base-LXmodules. Oneof these slots
can alsobe used for anoptional Stacking Modulethat allows you to attach
up to four switches to a 4 Gbps high-speed backplane. There is also an
optional SNMP-based Management Module that can be installed in the
rear panel. This module supports bothin-band and out-of-band access for
managing the switch and the attached stack.
The switch employs a high-speed switching fabric. This design allows for
simultaneous transport of multiple packets at low latency on all ports. It
also uses store-and-forward switching to ensure maximum data integrity.
In this mode, the entire packet must be received into a port buffer and
checked for validity before being forwarded. This prevents errors from
being propagated throughout the network. This switch also features full-
duplex capability on all ports, which effectively doubles the bandwidth of
each connection.
The switch can be used in a standalone configuration, or can be stacked
up to four high to form a single logical switch with up to 100 ports. When
stacked, the 4 Gbps stack backplane provides enough bandwidth for the
most demanding environment. Moreover, you can use a 100 Mbps fiber
module for connecting to a remote site, or a Gigabit module for a high-
speed backbone connection.
The RMON/SNMP/Web Management Module provides a broad range of
management options. It includes a standards-compliant Simple Network
Management Protocol (SNMP) agent. The SNMP agent allows network
management station applications to collect and present status and
performance information about the stack, as well as providing the ability
A s wit ch st ac k, or a swi tc h in a st a nda lone configuration, must
have an optional Management Module installed to enable all
ports. The base unit alone has all ports disabled by default.

2 Product Overview ELS100-S24TX2M
to configure and control functions in the stack. The module also supports
Remote Monitoring (RMON) for Statistics, History, Alarm and Event
groups (Groups 1-3, 9).
Network management can be performed in-band using TCP/IP or Telnet
connection to the serial console port on the Management Module.
This
module also includes a built-in Web agent that provides management
access via common http browsers such as Netscape Navigator and
Microsoft’s Internet Explorer. In addition, the console port allows out-of-
band management using a PC, terminal, or modem connection.
The ELS100-S24TX2M switch is desktop or rack-mountable. LEDs on the
front panel provide information about the operating status of the switch.
The back panel contains the power connector, redundant power
connector, and three slots for the optional modules. The side panel
includes two fans that maintain ventilation and cooling for internal switch
components.
Features
•Ports:
- 24 dual-speed 10Base-T/100Base-TX ports using RJ-45
connectors (MDI-X)
- 3 slots for optional modules
- 1 redundant power unit socket
•Optional Media Modules:
- EPIM1000-S1SX: 1000Base-SX Module provides 1 SC multi-
mode fiber optic port for an uplink connection to the stack
- EPIM1000-S1LX: 1000Base-LX Module provides 1 SC single-
mode fiber optic port for an uplink connection to the stack
- EPIM100-S2MFX: 100Base-FX Module provides 2 SC multi-
mode fiber optic ports for an uplink connection to the stack
- EPIM100-S1SFX: 100Base-FX Module provides 1 SC single-
mode fiber optic port for an uplink connection to the stack
•Optional Stacking Module:
- ELS100-STACK: Stacking Module provides 2 SCSI II
connectors for stacking switches (includes one 32 cm stack
interconnection cable)
•Optional Stacking Cable:
- 9380142: 32 cm short stack interconnection cable
- 9380143: 1 m long stack interconnection cable
•Optional RMON/SNMP/Web Management Module:
- ELS100-SMGMT: Management Module provides SNMP,
RMON, and Web management support for the stack.

90 33 260 -01 Product Overview 3
•Switch Architecture:
- 3 controllers with 8 10/100 ports
- IEEE 802.3u auto-negotiation of half/full-duplex operation on
all RJ-45 ports
- Up to 4 switch units can be stacked together, supporting up to
100 connections
- 128 KB packet buffering for 10/100 ports, 2 MB packet
buffering for 1000 ports
- Store-and-forward switching
-
8K address forwarding table
- Forwarding: 14,880 packets-per-second (64 byte packets)
@10 Mbps; 148,800 pps @100 Mbps; 1,488,000 pps @1000
Mbps
- Filtering: 14,880 packets-per-second (64 byte packets) @10
Mbps; 148,800 pps @100 Mbps; 1,488,000 pps @1000 Mbps
•Network Management:
- SNMP compliant agent: MIB II (RFC 1213); Bridge MIB (RFC
1493); Ethernet-like MIB (RFC 1643); RMON - Statistics,
History, Alarm and Event groups (RFC 1757); Interface
Evolution MIB (RFC 1573); Q-MIB (IEEE 802.1Q); private MIB
extensions
- Access via in-band, Internet browser, or Telnet
- Console port (RS-232, male DB-9 connector, null modem)
supports access via direct or modem connection
- BootP for IP address configuration
•Reliability:
- Redundant power supply support
•Software:
- Diagnostics for product testing and troubleshooting
- Firmware upgrades using the console port or in-band with
TFTP
•LED Indicators:
- System: Power, RPU, Management
- 10Base-T/100Base-TX ports: link/speed/disable,
mode (flow control, full duplex, activity)
- Media module ports: Status, Activity

4 Product Overview ELS100-S24TX2M
Front Panel
Figure 1-1 shows the front panel of the Cabletron Systems SmartSTACK
ELS100-S24TX2M. Table 1-1 defines the ELS100-S24TX2M front panel
components.
Figure 1-1. ELS100-S24TX2M Front Panel
Tabl e 1-1. Fr on t Panel C ompon ents
Name Function
Power LED Lights steadygreen to indicate power is supplied to the
switch. Off indicates no power is supplied to the switch.
RDP L ED L ig hts ste ad y t o ind ica te th at a re du nda nt p ower un i t is
a ttach ed an d is in ba ckup or a ctive m o de.
Mgmt LED Lights steadyto indicate that a Management Module is
inst al led an d i n op er atio nal mo de.
L ink L EDs Ye llo w in dicat es a 1 0 M bp s li n k; gr ee n ind ica te s a 10 0
Mbps link, off indicates no link; and flashing indicates
th at the po rt ha s b een m an ua lly d i sable d.
Mod e LEDs The Mo de S elect b utt on se lects th e LE D d isp lay m ode .
Act : Flash in g in di cat es a ctivit y on th e p or t se gmen t.
FDX: Lights steady to indicate full-duplex operation.
Flow Ctrl: Lights steady t o ind icate that flow control is
e nab led for t he po rt.
Module LEDs Status: Indicates a module is installed in the slot.
Act ivity: Fla shin g indicates act ivity on the module.
Switch ID LCD LCD displays the stack ID number of the switch.
10Base-T/100Base-TX
RJ-45 ports
Cop pe r po rt s u sin g RJ-4 5 por t con ne ctor s. All th e po rt s
are wired MDI-X.