Cabletron Systems Switch ELS100 8TXUF2 User Manual

SmartSTACK  
ELS100-8TXUF2  
FAST ETHERNET SWITCH  
INSTALLATION  
AND  
USER GUIDE  
9033029  
 
Notice  
Only qualified personnel should perform installation  
procedures.  
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 whether any 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, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT  
NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR  
THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN  
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH  
DAMAGES.  
1999 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005  
All Rights Reserved  
Printed in Taiwan, R.O.C.  
Order Number: 9033029 April 1999  
Cabletron Systems, is a registered trademark and SmartSwitch is a trademark of Cabletron  
Systems, Inc.  
All other product names mentioned in this manual may be trademarks or registered trademarks of  
their respective companies.  
FCC NOTICE  
This device complies with Part 15 of the FCC rules. Operation is subject to the following two  
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any  
interference received, including interference that 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 operated in a commercial 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 interference to radio communications.  
Operation of this equipment in a residential area is likely to cause interference in which case the user  
will be required to correct the interference at his own expense.  
WARNING: Changes or modifications made to this device which are not expressly approved by the  
party responsible for compliance could void the user’s authority to operate the equipment.  
9033029  
i
 
Notice  
INDUSTRY CANADA NOTICE  
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital  
apparatus set out in the Radio 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 for Interference by  
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment,  
radio disturbance may arise. When such trouble occurs, the user may be required to take corrective  
actions.  
ii  
9033029  
 
Notice  
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 OR UTILIZING THE ENCLOSED PRODUCT,  
CAREFULLY READ THIS LICENSE AGREEMENT.  
This document is an agreement (“Agreement”) between You, the end user, and Cabletron  
Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron  
software program (“Program”) in the package. The Program may be contained in firmware, chips or  
other media. UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME  
BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND  
THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT  
AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED PRODUCT TO  
CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS FOLLOWING THE  
DATE OF RECEIPT FOR A FULL REFUND.  
IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON  
SYSTEMS (603) 332-9400. Attn: Legal Department.  
1.  
LICENSE. You have the right to use only the one (1) copy of the Program provided in this  
package subject to the terms and conditions of this License Agreement.  
You may not copy, reproduce or transmit any part of the Program except as permitted by the  
Copyright Act of the United States or as authorized in writing by Cabletron.  
2.  
OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the  
Program.  
3.  
APPLICABLE LAW. This License Agreement 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 New Hampshire courts.  
4.  
EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to  
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which  
prohibit export or diversion of certain technical products to certain countries, unless a license to export  
the product is obtained from the U.S. Government or an exception from obtaining such license may 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 agree that You are a civil end user of the Program  
and agree that You will use the Program for civil end uses only and not for military purposes.  
9033029  
iii  
 
Notice  
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 the restriction on transfer set forth in  
Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source  
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,  
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,  
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,  
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  
or E:2 (as defined herein) the direct product of the Program or the technology, 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 a plant, export to Country Groups D:1 or E:2 the direct product of the plant 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. The enclosed 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 Clause and its successors, and (iii) in all respects is proprietary data  
belonging to Cabletron and/or its suppliers. For Department of Defense units, the Product is considered  
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and  
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.  
6.  
EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in  
writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including its  
documentation and media).  
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO  
YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED, INCLUDING BUT  
NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING  
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.  
7.  
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL  
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER  
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS,  
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL,  
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE  
USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS  
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO  
NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR  
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED  
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY  
NOT APPLY TO YOU.  
iv  
9033029  
 
Notice  
CABLETRON SYSTEMS SALES AND SERVICE, INC.  
PROGRAM LICENSE AGREEMENT  
IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE UNITED  
STATES OF AMERICA AND BY UNITED STATES OF AMERICA  
GOVERNMENT END USERS.  
BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT,  
CAREFULLY READ THIS LICENSE AGREEMENT.  
This document is an agreement (“Agreement”) between You, the end user, and Cabletron Systems  
Sales and Service, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the  
Cabletron software program (“Program”) in the package. The Program may be contained in firmware,  
chips or other media. UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO  
BECOME BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE  
LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF  
YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED  
PRODUCT TO CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS  
FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.  
IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON  
SYSTEMS (603) 332-9400. Attn: Legal Department.  
1.  
LICENSE. You have the right to use only the one (1) copy of the Program provided in this  
package subject to the terms and conditions of this License Agreement.  
You may not copy, reproduce or transmit any part of the Program except as permitted by the  
Copyright Act of the United States or as authorized in writing by Cabletron.  
2.  
OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the  
Program.  
3.  
APPLICABLE LAW. This License Agreement 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 New Hampshire courts.  
4.  
EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to  
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which  
prohibit export or diversion of certain technical products to certain countries, unless a license to export  
the product is obtained from the U.S. Government or an exception from obtaining such license may 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 agree that You are a civil end user of the Program  
and agree that You will use the Program for civil end uses only and not for military purposes.  
9033029  
v
 
Notice  
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 the restriction on transfer set forth in  
Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source  
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,  
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,  
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,  
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  
or E:2 (as defined herein) the direct product of the Program or the technology, 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 a plant, export to Country Groups D:1 or E:2 the direct product of the plant 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. The enclosed 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 Clause and its successors, and (iii) in all respects is proprietary data  
belonging to Cabletron and/or its suppliers. For Department of Defense units, the Product is considered  
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and  
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.  
6.  
EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in  
writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including its  
documentation and media).  
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO  
YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED, INCLUDING BUT  
NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING  
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.  
7.  
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL  
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER  
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS,  
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL,  
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE  
USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS  
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO  
NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR  
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED  
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY  
NOT APPLY TO YOU.  
vi  
9033029  
 
Notice  
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 OR UTILIZING THE ENCLOSED PRODUCT,  
CAREFULLY READ THIS LICENSE AGREEMENT.  
This document is an agreement (“Agreement”) between You, the end user, and Cabletron  
Systems Limited (“Cabletron”) that sets forth your rights and obligations with respect to the  
Cabletron software program (“Program”) in the package. The Program may be contained in firmware,  
chips or other media. UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO  
BECOME BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE  
LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF  
YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, RETURN THE UNOPENED  
PRODUCT TO CABLETRON OR YOUR DEALER, IF ANY, WITHIN TEN (10) DAYS  
FOLLOWING THE DATE OF RECEIPT FOR A FULL REFUND.  
IF YOU HAVE ANY QUESTIONS ABOUT THIS AGREEMENT, CONTACT CABLETRON  
SYSTEMS (603) 332-9400. Attn: Legal Department.  
1.  
LICENSE. You have the right to use only the one (1) copy of the Program provided in this  
package subject to the terms and conditions of this License Agreement.  
You may not copy, reproduce or transmit any part of the Program except as permitted by the  
Copyright Act of the United States or as authorized in writing by Cabletron.  
2.  
OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the  
Program.  
3.  
APPLICABLE LAW. This License Agreement shall be governed in accordance with English  
law. The English courts shall have exclusive jurisdiction in the event of any disputes.  
4.  
EXPORT REQUIREMENTS. You understand that Cabletron and its Affiliates are subject to  
regulation by agencies of the U.S. Government, including the U.S. Department of Commerce, which  
prohibit export or diversion of certain technical products to certain countries, unless a license to export  
the product is obtained from the U.S. Government or an exception from obtaining such license may 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 agree that You are a civil end user of the Program  
and agree that You will use the Program for civil end uses only and not for military purposes.  
9033029  
vii  
 
Notice  
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 the restriction on transfer set forth in  
Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source  
code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania,  
Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan,  
Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,  
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  
or E:2 (as defined herein) the direct product of the Program or the technology, 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 a plant, export to Country Groups D:1 or E:2 the direct product of the plant 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. The enclosed 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 Clause and its successors, and (iii) in all respects is proprietary data  
belonging to Cabletron and/or its suppliers. For Department of Defense units, the Product is considered  
commercial computer software in accordance with DFARS section 227.7202-3 and its successors, and  
use, duplication, or disclosure by the Government is subject to restrictions set forth herein.  
6.  
EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in  
writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including its  
documentation and media).  
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO  
YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED, INCLUDING BUT  
NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING  
WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.  
7.  
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL  
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER  
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS,  
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL,  
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE  
USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS  
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO  
NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR  
INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED  
WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY  
NOT APPLY TO YOU.  
viii  
9033029  
 
Notice  
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 Systems Limited  
Nexus House, Newbury Business  
Park  
London Road, Newbury  
Berkshire RG13 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  
9033029  
ix  
 
Notice  
x
9033029  
 
TABLE OF CONTENTS  
PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .XIII  
Feature Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Auto-negotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Mounting the Switch on a Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Power-Up Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Network Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Fiber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
10Base-T/100Base-TX Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
100Base-FX Fiber Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
APPENDIX A. TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . 15  
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Data Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
9033029  
Table of Contents xi  
 
Port Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
10Base-T and 100Base-TX Ports . . . . . . . . . . . . . . . . . . . . . . . . . 16  
MDI/MDI-X Crossover Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . 16  
Power Adapter Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
APPENDIX B. FLOW CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
APPENDIX C. ACRONYMS AND ABBREVIATIONS . . . . . . . . . . . . . 21  
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
xii Table of Contents  
ELS100-8TXUF2  
 
PREFACE  
Purpose  
This guide provides information about the features and applications of the  
Cabletron ELS100-8TXUF2 switch.  
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 Formats  
Two types of messages, identified by icons, appear in the text:  
A note informs you of special circumstances.  
A caution indicates the possibility of equipment damage.  
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.  
9033029  
Preface xiii  
 
           
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.  
Appendix C. Acronyms and Abbreviations: Provides definitions for a  
list of common acronyms and abbreviations used within the user guide  
and the networking industry.  
xiv Preface  
ELS100-8TXUF2  
 
1. PRODUCT OVERVIEW  
Description  
This installation and user guide describes the Cabletron Systems  
ELS100-8TXUF2 Ethernet switch. This unit is IEEE 802.1D bridging  
compliant, and supports eight IEEE 802.3u 100Base-TX Fast Ethernet  
ports. Each of the RJ-45 ports can alternatively operate as an IEEE 802.3i  
10Base-T port. In addition, the switch also includes one port that supports  
Fast Ethernet over fiber (IEEE 802.3u 100Base-FX).  
The Cabletron Systems ELS100-8TXUF2 switch automatically learns  
end-station addresses from the network and stores them in a Media  
Access Control (MAC) address forwarding table. Incoming packets are  
then forwarded to the appropriate output port based on the addresses in  
the packet. Each port on the switch operates at full Fast Ethernet wire  
speed with full address and frame filtering. This switch also supports  
advanced features such as flow control and broadcast throttling.  
The ELS100-8TXUF2 switch can be conveniently mounted on a desk or  
shelf. LEDs on the front panel provide information about the operating  
status of the switch. The back panel of the switch contains a connector for  
an external power adapter that is provided with the switch.  
This chapter provides the following information:  
Product Description  
Features  
Front and Rear Panel Component Descriptions  
Feature Summaries  
Application Examples  
Features  
Ports:  
- 8 dual-speed 10Base-T/100Base-TX ports using RJ-45  
connectors (MDI-X)  
- 1 100Base-FX port using SC connectors  
Note: When attaching a device to Port 8, use the toggle switch  
on the front panel to select the RJ-45 or fiber connector.  
Architecture:  
- 8-port switch ASIC in a distributed switching architecture  
- 1.6 Gbps internal switching fabric  
- Up to 1024 KB packet buffering (128 KB/port)  
- Forwarding table holds up to 1K MAC addresses per system  
9033029  
Product Overview 1  
 
       
- IEEE 802.3u auto-negotiation for full/half duplex and 10/100  
Mbps speed operation on all RJ-45 10/100 ports  
- High performance store-and-forward switching  
Performance  
Forwarding and Filtering:  
- at 10 Mbps, 14,880 packets-per-second (64 byte packets)  
- at 100 Mbps, 148,800 packets-per-second (64 byte packets)  
Traffic Management:  
- Flow control per port: IEEE 802.3x frame-based for full duplex;  
back-pressure for half duplex  
- Broadcast throttling for broadcast storm control  
LED Indicators:  
- 10Base-T/100Base-TX Ethernet ports: Link, Speed, Collision  
- System: Power  
Front Panel  
Figure 1-1 shows the front panel of the Cabletron ELS100-8TXUF2. Table  
1-1 defines the ELS100-8TXUF2 front panel components.  
Figure 1-1. ELS100-8TXUF2 Front Panel  
Table 1-1. Front Panel Components  
Function  
Name  
10Base-T/100Base-TX  
RJ-45 ports (Ports 1-8)*  
Copper port using RJ-45 port connectors. These ports  
are wired MDI-X.  
100Base-FX Fiber Ports  
(Port 8)*  
Fiber ports using SC fiber connectors.  
Ports LEDs  
Indicates Link, Speed and Collision information (see  
Table 1-2 for details).  
Power LED  
Lights steady green to indicate power is supplied to the  
switch. Off indicates no power is supplied to the switch.  
* When using Port 8, use the toggle switch on the front panel to select the RJ-45 con-  
nector or fiber connector.  
2 Product Overview  
ELS100-8TXUF2  
 
             
Figure 1-2 shows the port Link, Speed and Collision LEDs. The port LEDs  
are grouped to the left of their corresponding RJ-45 ports. Table 1-2  
defines the performance of the port LEDs.  
Figure 1-2. Port LEDs  
Table 1-2. Port LEDs Defined  
Function  
LED  
Link LED  
On: Indicates a valid connection (link) on the associated port.  
Off: Indicates no link on the associated port.  
100 LED  
On: Indicates the port is in the 100Base-TX mode.  
Off: Indicates the port is in the 10Base-T mode.  
Collision LED  
Flashing: Indicates packet collisions detected on this port.This is a nor-  
mal situation for CSMA/CD Ethernet. Note that collisions do not occur  
on full-duplex links.  
Off: Indicates no packet collisions detected on this port.  
Rear Panel  
Figure 1-3 shows the ELS100-8TXUF2 rear panel, which includes a  
connector for the DC power adapter.  
Figure 1-3. ELS100-8TXUF2 Rear Panel  
9033029  
Product Overview 3  
 
       
Feature Summaries  
The following summaries provide a brief description of ELS100-8TXUF2  
features in areas such as standards compliance, functionality,  
performance, and options.  
IEEE 802.1D Bridge  
The ELS100-8TXUF2 switch is fully compliant with IEEE 802.1D  
transparent bridging specifications. An aggregate address table  
containing 1K address entries is provided for learning, filtering, and  
forwarding. Addresses are automatically learned by the switch.  
Frame Buffering and Frame Latency  
The ELS100-8TXUF2 switch is a store-and-forward switching device.  
Each frame is copied into switch memory before being forwarded to  
another port. This method ensures that all forwarded frames conform to a  
standard Ethernet frame size and have a correct cyclic redundancy check  
(CRC) for data integrity. This switching method prevents bad frames from  
traversing the network and using up valuable network bandwidth, as with  
cut-through switching technology.  
To minimize the possibility of dropping frames on congested ports, the  
ELS100-8TXUF2 switch provides 128 KB frame buffer per port. This  
buffer space is used to queue packets for transmission on congested  
networks. This is an additional advantage over cut-through switching  
technology, which drops packets immediately when experiencing  
collisions.  
Auto-negotiation  
Auto-negotiation is a process that permits the switch to automatically  
select the operational modes of its ports. Upon first being connected, the  
switch detects the speed of the network the port is connected to, either  
10Mbps or 100Mbps, and the type of communication setting, half or full  
duplex. The port is then automatically set by the switch to operate in the  
proper mode without user intervention. It is not required that the network  
device being connected to the switch supports auto-negotiation as the  
ELS100-8TXUF2 switch automatically adjusts to the network device’s  
communication settings.  
Broadcast Throttling  
The ELS100-8TXUF2 switch has the capability to throttle (or limit) the  
flooding of packets through the switch. Broadcast, multicast, and  
unknown destination address unicast packets received by the switch are  
typically flooded to all ports on the switch. When the number of these  
types of packets being forwarded is large, the performance of the switch  
in forwarding packets of other types may suffer.  
4 Product Overview  
ELS100-8TXUF2  
 
                 
A broadcast cutoff threshold rate has been set in the switch for the  
forwarding of broadcast and unknown destination address packets. If the  
cutoff rate is exceeded, further packets of these types are dropped. This  
capability helps to alleviate broadcast storms, a problem often encountered  
in Ethernet networks.  
LEDs  
The switch port LEDs provide a quick and accurate display of the status  
of switch connections. The port LEDs indicate link integrity, speed, and  
collisions (for half-duplex connections).  
Full Duplex Mode  
The full duplex mode of operation on a port can double the throughput of  
switch connections. This mode disables the collision detection portion of  
the Ethernet Carrier Sense Multiple Access with Collision Detection  
(CSMA/CD) protocol allowing for two-way traffic.  
Flow Control  
Flow control allows you to manage network traffic during congestion  
periods and to prevent the loss of packets when port buffer thresholds are  
exceeded. Flow control also serves to deny access to additional traffic  
that could add to a congestion condition. The ELS100-8TXUF2 switch  
supports flow control per the IEEE 802.3x standard. See Appendix C  
“Flow Control” for more information on this feature.  
Spanning Tree  
This product is intended to be used as an end-switch and does not  
support spanning tree. There is no loop detection. The user is cautioned  
to understand and avoid configurations that can create a loop.  
Application Examples  
The exploding popularity of the Internet and of corporate intranets, as well  
as new, high-bandwidth desktop applications are driving the demand for  
Fast Ethernet. The increase in multimedia traffic and the need to support  
legacy protocols alongside new, data intensive applications is driving the  
need for network segmentation and traffic prioritization.  
The ELS100-8TXUF2 switch is ideal for meeting the needs of today’s high  
performance networks. The switch’s low cost makes it attractive and  
affordable for dedicated 10/100Mbps connections to the desktop.  
The following sections illustrate the ELS100-8TXUF2 switch employed in  
application examples:  
Client/Server Network  
Local Backbone  
9033029  
Product Overview 5  
 
         
Client/Server Network Application  
To improve workstation performance in a client/server environment, the  
ELS100-8TXUF2 switch can be configured to provide 200 Mbps full  
duplex Fast Ethernet connections to servers by connecting each to a  
dedicated switch port (Figure 1-4). Users can be accommodated through  
connections to hubs, both at 10Mbps and 100Mbps speeds, through  
10Mbps switches with 100Mbps uplinks, or through direct connections.  
The fiber uplink is available to connect the switch to a remote location,  
such as another building floor or a separate building.  
The ELS100-8TXUF2 switch can be used in a local backbone application,  
connecting network segments together and providing file-server access.  
Workgroup hubs are provided with a single connection to the switch while  
servers are put on dedicated 100 Mbps ports. Routers and other  
networking devices can connect off of the switched backbone as well. The  
fiber uplink is available to connect the switch to a remote location, such  
as another building floor or a separate building.  
Figure 1-4. Client/Server Network Application  
6 Product Overview  
ELS100-8TXUF2  
 
     
2. INSTALLATION  
Inspecting Your Shipment  
When you receive the shipment of your switch, check the package  
contents and make sure you have the following items:  
ELS100-8TXUF2 Fast Ethernet switch  
Mounting velcro  
Rubber feet  
Power adapter  
This document  
Site Requirements  
Before you install the switch, make sure the site meets the following  
requirements:  
Mounting  
Provide a flat table, wall or shelf surface.  
Power source  
Provide a power source within six feet (1.8 m) of the installation loca-  
tion. This source must provide 100 VAC to 240 VAC, and 50 Hz to 60  
Hz power, with a 100 VA minimum. Power specifications for the  
switch are shown in Appendix A, “Technical Specifications.”  
Environmental  
Install the ELS100-8TXUF2 switch in a dry area, with adequate air  
circulation. Avoid placing the switch in direct sunlight or near other  
heat sources, such as hot-air vents. For temperature and humidity  
specifications, see Appendix A, “Technical Specifications.”  
Ventilation  
Do not restrict airflow by covering or obstructing air inlets on the side  
of the switch.  
9033029  
Installation 7  
 
             
Mounting the Switch on a Table or Shelf  
First attach the rubber feet to the indentations on the bottom of the switch.  
Then mount the switch on a table or shelf in a position that allows access  
to the front panel RJ-45 ports, visibility of the port LEDs, and access to the  
power cord. Make sure that the mounting surface can safely support the  
switch and that there is adequate space around the switch for ventilation  
and cooling.  
The rubber feet improve the switch’s grip on the  
mounting surface, and provide ventilation between  
switches when stacked together.  
8 Installation  
ELS100-8TXUF2  
 
   
Mounting the Switch on a Wall  
The module ships with one (1) velcro strip. The velcro strip is used to attach  
the switch to the wall.  
Do not attach rubber feet to the switch when mounting the switch to the  
wall with velcro.  
Figure 2-1 illustrates two recommended orientations for wall mounting the  
switch. This figure also shows where to the position velcro on the switch.  
To attach velcro do the following:  
1. Place the switch on a flat surface with the Cabletron logo on the left  
and the 100Base-FX ports on the right.  
2. Attach the velcro to the center of the switch using the  
supplied 2 x 4 inch strip of velcro.  
3. Position the switch on a wall surface that can safely support the  
switch.  
Figure 2-1. Mounting the Switch on a Wall  
9033029  
Installation 9  
 
   
Powering the Switch  
To supply power to the switch, do the following:  
1. Connect the power adapter to the switch and to a grounded three-  
prong wall outlet (Figure 2-2). Secure the power cord to the tiedown  
bracket on the back of the switch to prevent it from being accidentally  
disconnected from the switch. See Appendix A, “Power Adapter Set  
Requirements,” for more information regarding specific international  
power adapter requirements.  
Figure 2-2. Connecting the Power Cord to the Switch  
2. Check the Power LED.  
The Power LED lights green (see Figure 1-1). If it does not, check to  
make sure that the power cord is plugged in correctly and that the  
power source is good.  
Power-Up Verification  
When you connect the power cord, the switch conducts a series of  
hardware and software tests to verify correct operation.  
10 Installation  
ELS100-8TXUF2  
 
       
Network Cable Requirements  
Copper  
Table 2-1 specifies the cable types and length constraints for the various  
copper interfaces on the ELS100-8TXUF2.  
Table 2-1. Copper Cable Specifications  
Interface Type  
Cable Requirement  
Maximum Length  
10Base-T  
Category 3 or 5 Unshielded Twisted  
Pair (UTP)  
100m (328 ft.)  
100Base-TX  
Category 5 UTP  
100m (328 ft.)  
Fiber  
Table 2-2 specifies the fiber types, bandwidth requirements, and length  
constraints for the Fast Ethernet fiber interface on the ELS100-8TXUF2.  
Table 2-2. Fast Ethernet Fiber Specifications  
Interface Type  
Fiber Type  
Fiber Diameter  
(microns)  
Maximum Length (m)  
100Base-FX  
multi-mode  
62.5/125  
2,000m (6,560 ft.)  
9033029  
Installation 11  
 
           
10Base-T/100Base-TX Ports  
The 10Base-T/100Base-TX ports use RJ-45 connectors. Figure 2-3  
shows an RJ-45 connector being inserted into a port.  
Figure 2-3. Inserting an RJ-45 Connector into a Port  
The 10Base-T/100Base-TX ports interface to UTP cabling for connection  
to 10Base-T or 100Base-TX network segments or end-stations. These  
UTP connections meet the requirements of ISO 8877, specified by  
10Base-T, Section 14 of the IEEE 802.3 specification. The ports are wired  
with the MDI-X function implemented. Workstations or servers can be  
connected to the ELS100-8TXUF2 switch using standard straight-through  
wired cables.  
For connections to hubs or other switches, a crossover cable may be  
necessary (refer to the “MDI/MDI-X Crossover Cable Wiring” section in  
Appendix A). See Table A-2 for 10Base-T/100Base-TX connector pin  
assignments.  
12 Installation  
ELS100-8TXUF2  
 
           
100Base-FX Fiber Ports  
The 100Base-FX Fiber port uses SC connectors. Figure 2-4 shows an SC  
fiber connector being inserted into the fiber port on the ELS100-8TXUF2.  
Figure 2-4. Inserting a Dual SC Connector into a Port  
This port supports multi-mode 62.5/125mm fiber. The 100Base-FX port  
uses SC fiber connectors. The SC fiber connectors are configured as a  
receive (RX)/and transmit(TX) pair. The RX connector positioned on the  
left side of the port and the TX connector on the right side of the port.  
9033029  
Installation 13  
 
   
14 Installation  
ELS100-8TXUF2  
 
APPENDIX A. TECHNICAL SPECIFICATIONS  
General  
Standards Compliance  
IEEE 802.1D Transparent Bridging Specifications (ISO/IEC 10038)  
IEEE 802.2 Local Area Networks, Logical Link Control (LLC)  
IEEE 802.3 CSMA/CD 9 (ISO/IEC 8802-3)  
IEEE 802.3i 10Base-T (ISO/IEC 8802-3, clause 14)  
IEEE 802.3u 100Base-TX (ISO/IEC 8802-3, clause 25)  
IEEE 802.3x Flow Control  
Certification  
Emissions: FCC Part 15, Subpart B, Class B; EN55022 (CISPR 22),  
Class B; VCCI Class B  
Safety: CSA/NRTL (C22.2.950,UL1950), TÜV/GS (EN60950)  
CE Directives: 89/336/EEC; 93/68/EEC; 73/23/EEC  
Data Rate  
10Mbps Manchester encoded or 100Mbps 4B/5B encoded.  
Environmental Specifications  
Operating temperature:  
Operating humidity:  
Storage temperature:  
Storage humidity:  
32° to 104° F (0° C to 50° C)  
5 to 95% relative, non-condensing  
-13° to 158°F (-25° C to 70° C)  
5 to 95% relative, non-condensing  
Electrical Specifications  
Input voltage (mains):  
Input frequency (mains):  
90-127* VAC, 220-240 VAC  
50-60 Hz  
Output voltage (adapter):  
13-19 VDC  
Maximum output current (adapter) 800 mA  
Minimum power consumption:  
_____________  
15.2 VA  
* Input specifications are dependant on the Country (refer to Table A-2).  
9033029  
Technical Specifications 15  
 
                                   
Physical  
Height:  
Length:  
Width:  
1.46 in. (3.7 cm)  
4.65 in. (11.6 cm)  
9.88 in. (24.9 cm)  
1.8 lb. (0.815 kg)  
Weight:  
Memory  
Packet Buffer Memory:  
128 KB per port  
Port Specifications  
10Base-T and 100Base-TX Ports  
Table A-1 shows the 10Base-T/100Base-TX pinouts. These ports are  
wired MDI-X. All undefined pins are not used.  
Table A-1. 10Base-T/100Base-TX Pinouts  
Pin  
1
MDI-X Signal Name  
RD+  
RD-  
TD+  
TD-  
2
3
6
MDI/MDI-X Crossover Cable Wiring  
Figure A-1 shows the wiring scheme for implementing a crossover cable  
if needed for connection to the switch’s 10Base-T or 100Base-TX ports.  
Such a cable may be required when connecting the switch to another  
switch or a hub device.  
Figure A-1. External Crossover Cable Wiring  
16 Technical Specifications  
ELS100-8TXUF2  
 
                 
Power Adapter Requirements  
Table A-2 shows the power adapter requirements.  
Table A-2. Power Adapter Requirements  
Country  
USA:  
Adapter P/N  
0950-3274  
0950-3267  
0950-3269  
0950-3270  
T4190800SE  
Input Specifications*  
110-127 VAC, 60Hz  
90-110 VAC, 50 Hz  
230-240 VAC, 50 Hz  
220-240 VAC, 50 Hz  
220-240 VAC, 50Hz  
Output Specifications*  
19 VDC, 800 mA  
19 VDC, 800mA  
19 VDC, 800mA  
19 VDC, 800mA  
19 VDC, 800 mA  
Japan:  
Australia:  
UK:  
Europe:  
* Specifications are shown on the adapter label.  
9033029  
Technical Specifications 17  
 
   
18 Technical Specifications  
ELS100-8TXUF2  
 
APPENDIX B. FLOW CONTROL  
Flow control is a mechanism that controls the flow of data in both  
directions to prevent data loss, buffer deadlock, overload conditions and  
minimizing communications overhead during transmission. Figure B-1  
illustrates flow control for both half and full duplex applications.  
Figure B-1. Flow Control for Full and Half Duplex Applications  
Each port of the switch has a transmit queue which buffers frames to be  
sent out on that port. In this example, large amounts of data are being  
sent from Workstation A (connected to port X) and other ports on the  
switch to Workstation B (connected to port Y).The buffer on port Y starts  
filling up with data until it reaches a pre-determined threshold. The packet  
which causes the threshold to be exceeded triggers the Flow Control  
function on the port from which the packet entered the switch, in this case  
port X.  
Since port X is configured with Flow Control set to Enabled, the switch  
responds by initiating a pause frame (full duplex applications) or back-  
pressure mechanism (half duplex applications). The pause frame causes  
Workstation A to stop sending packets. After a certain amount of time has  
elapsed, determined by a value in the pause frame, Workstation A will  
resume sending data. Similarly, the back-pressure mechanism forces  
Workstation A to stop sending packets by inducing collisions on port X.  
Note that for the full duplex pause frame mechanism to work, the device  
connected to the switch port must also support IEEE 802.3x flow control.  
The pause frame flow control mechanism supported by the ELS100-  
8TXUF2 switch conforms with the IEEE 802.3x specification for full duplex  
flow control.  
9033029  
Flow Control 19  
 
     
20 Flow Control  
ELS100-8TXUF2  
 
APPENDIX C.ACRONYMS AND  
ABBREVIATIONS  
Term  
Definition  
10Base-T  
100Base-TX  
100Base-FX  
ANSI  
10Mbps twisted-pair Ethernet  
100Mbps twisted-pair Fast Ethernet  
100Mbps fiber optic Fast Ethernet  
American National Standards Institute  
Application Specific Integrated Circuit  
Category 5  
ASIC  
CAT5  
CSMA/CD  
IEEE  
Carrier Sense Multiple Access/Collision Detection  
Institute of Electrical and Electronics Engineers  
Local Area Network  
LAN  
MAC  
Media Access Control  
LED  
Light Emitting Diode  
MDI  
Media Device Interface  
MDI-X  
RFC  
Media Device Interface-crossover cable wiring  
Request for Comment  
UTP  
Unshielded Twisted Pair  
A switch that terminates a branch. Also known  
as a leaf switch.  
end-switch  
9033029  
Acronyms and Abbreviations 21  
 
 
22 Acronyms and Abbreviations  
ELS100-8TXFU2  
 
INDEX  
10Base-T/100Base-TX  
Pinouts, 16  
L
LEDs, 3  
Ports, 12  
802.1D, 4, 15  
802.2, 15  
802.3, 12, 15  
802.3i, 15  
M
MDI-X, 12  
mounting the switch  
table or shelf, 8  
wall, 9  
802.3u, 15  
802.3x, 2, 15, 19  
A
architecture, 1  
port LEDs, 3  
B
broadcast throttling, 4  
defined, 3  
Port Specifications, 16  
power cord, 10  
C
certification, 15  
power LED, 2  
defined, 2  
client/server network application, 6  
connecting network cables, 11  
crossover cable, 12  
cut-through, 4  
R
D
rear panel, 3  
Data Rate, 15  
E
Electrical Specifications, 15  
site requirements, 7  
Spanning Tree, 5  
Standards Compliance  
Environmental Specifications, 15  
F
Fiber Optic Cable  
multi-mode, 11  
store-and-forward, 4  
flow control, 5, 19  
802.3x, 19  
front panel, 2  
U
Unshielded Twisted Pair (UTP), 11  
front panel components, 2  
V
I
Ventilation, 7  
inspecting your shipment, 7  
W
workgroup hubs, 6  
9033029  
Index 23  
 
 
24 Index  
ELS100-8TXUF2  
 

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