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SEH100TX-22
100BASE-T STACKABLE HUB
USER’S GUIDE
®
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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 L
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Notice DOC 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
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Notice CABLETRON SOFTWARE PROGRAM LICENSE 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
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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 Dir
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CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Manual....................................................................... 1-1 1.2 Document Conventions ............................................................... 1-2 1.3 Getting Help................................................................................. 1-3 1.4 Related Manuals.......................................................................... 1-4 CHAPTER 2 SEH FEATURES AND OPTIONS 2.1 SEH Overview ................
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Contents CHAPTER 4 INSTALLATION 4.1 Unpacking the SEH......................................................................4-1 4.2 Tabletop or Shelf Installation .......................................................4-2 4.3 Rackmount Installation.................................................................4-3 4.4 Powering Up and Stacking the SEH ............................................4-5 4.4.1 Stacking SEH Hubs with an SEHI...................................4-6 4.4.2 Stackin
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CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEH100TX-22 100BASE-T Stackable Hub User’s Guide. This manual provides installation instructions, troubleshooting and reference information for the SEH100TX-22. The terms SEH (Stackable Ethernet Hub) and SEHI (Stackable NOTE Ethernet Hub with Intelligence) are used throughout this manual when referring to the SEH100TX-22 and the SEHI100TX-22, respectively. 1.1 USING THIS MANUAL Read through this manual to gain
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Chapter 1: Introduction 1.2 DOCUMENT CONVENTIONS The following conventions are used throughout this document: Note symbol. Calls the reader’s attention to any item of NOTE information that may be of special importance. Tip symbol. Conveys helpful hints concerning procedures or actions. TIP Caution symbol. Contains information essential to avoid damage to the equipment. ! CAUTION Electrical Hazard Warning symbol. Warns against an action that could result in personal injury or de
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Getting Help 1.3 GETTING HELP If you need additional support related to this device, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: Phone (603) 332-9400 Monday – Friday; 8 A.M. – 8 P.M. Eastern Time CompuServe GO CTRON from any ! prompt Internet mail support@ctron.com FTP ctron.com (134.141.197.25) Login anonymous Password your email address BBS (603) 335-3358 Modem setting 8N1: 8 data bits, 1 stop bi
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Chapter 1: Introduction 1.4 RELATED MANUALS Use the Cabletron Systems SEHI100TX-22 100BASE-T Intelligent Stackable Hub User’s Guide to supplement the procedures and other technical data provided in this manual. The procedures contained in the SEHI100TX-22 100BASE-T Intelligent Stackable Hub User’s Guide are referenced where appropriate, but not repeated in this manual. 1-4 SEH100TX User’s Guide
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CHAPTER 2 SEH FEATURES AND OPTIONS This chapter provides an overview of the SEH (Figure 2-1) and contains sections detailing the features and available options. The abbreviations SEH (Stackable Ethernet Hub) and SEHI NOTE (Stackable Ethernet Hub with Intelligence) are used throughout this manual when referring to the SEH100TX-22 and the SEHI100TX-22, respectively. EPIM 2 HubSTACK 100BASE-TX HUB WITH LANVIEW® SEH100TX-22 RCV LNK E 22 21 20 19 18 17 16 15 14 13 12 2 22X 21X 20
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Chapter 2: SEH Features and Options 2.1 SEH OVERVIEW The SEH100TX-22 is a repeating hub providing 22 RJ45 ports and two Ethernet Port Interface Module (EPIM) ports on the front panel for network connections. The SEH has two rear panel Interconnect Bus ports for stackable connections. The front panel EPIM ports support the EPIM-100TX, EPIM-100FX, and the EPIM-100FMB. The SEH100TX-22 is designed to be managed by the Cabletron Systems intelligent stackable hub, the SEHI100TX-22. T
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Stackable Capabilities LANVIEW LEDs Cabletron Systems LANVIEW status monitoring and diagnostics system is a troubleshooting tool that helps in diagnosing power failures, collisions, cable faults, and link problems. The LANVIEW LEDs are conveniently located on the SEH front panel. 2.3 STACKABLE CAPABILITIES The SEH100TX-22 is a non-intelligent hub designed to be managed by the Cabletron Systems SEHI100TX-22 intelligent hub. The design of the SEH allows the stacking of five SEH hubs
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Chapter 2: SEH Features and Options 2.5 OPTIONAL EPIMs EPIMs are not included with the SEH, but they can be purchased separately from Cabletron Systems. EPIMs enable the expansion of a network through different types of media. Cabletron Systems offers three optional EPIMs for the SEH100TX-22 and SEHI100TX-22 as shown in Table 2-1 Table 2-1 100BASE-TX/FX/FMB EPIMs EPIM Media Type Connector Category 5 Unshielded Twisted EPIM-100TX RJ45 Pair Cable EPIM-100FX Multimode Fiber Optic Cable
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CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This chapter describes cabling requirements, network guidelines, and operating specifications for the SEH100TX-22. The network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from ! CAUTION this equipment. Failure to follow these guidelines could result in poor network performance. 3.1 CABLE SPECIFICATIONS The front panel SEH100TX-22 network ports support Category 5 Unshielde
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Chapter 3: Installation Requirements and Specifications 3.1.2 UTP Cable Specifications The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-T specifications. When connecting a 100BASE-TX twisted pair segment to the SEH twisted pair network ports and the EPIM-100TX module, the network must meet the following requirements: Length The IEEE 802.3u 100BASE-T standard requires that 100BASE-TX devices have the ability to transmit over a 100 meter (328 foot) l
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Cable Specifications Propagation Delay Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the network is 256 bit times (2.56 m s) in one direction (5.12 m s round trip). If the total propagation delay between any two nodes on the network exceeds 2.56 m s, then use bridges or other devices to further segment the network. Temperature The attenuation of PVC insulated cable varies significantly with
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Chapter 3: Installation Requirements and Specifications 3.2 NETWORK CABLE LENGTHS This section details the maximum network cable lengths specified by the IEEE 802.3u standard for a Class I repeater. As stated previously, the physical size of the network is limited primarily by propagation delay. The round trip delay cannot exceed 512 bit times or 5.12 m s. A stack of five SEH hubs or four SEH hubs and one SEHI hub NOTE is equivalent to one repeater. A 100BASE-T network might use all UTP links,
