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SEHI Book Page 1 Friday, April 19, 1996 10:46 AM
SEHI-22FL
INTELLIGENT STACKABLE HUB
USER’S GUIDE
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SEHI Book Page i Friday, April 19, 1996 10:46 AM 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 F
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SEHI Book Page ii Friday, April 19, 1996 10:46 AM Notice 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 rul
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SEHI Book Page iii Friday, April 19, 1996 10:46 AM Notice CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an 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 (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media
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SEHI Book Page iv Friday, April 19, 1996 10:46 AM Notice UNITED STATES GOVERNMENT RESTRICTED RIGHTS The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers. For Department of Defe
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SEHI Book Page v Friday, April 19, 1996 10:46 AM 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.......................................................................... 1-3 CHAPTER 2 SEHI
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SEHI Book Page vi Friday, April 19, 1996 10:46 AM Contents CHAPTER 4 INSTALLATION 4.1 Unpacking the SEHI.....................................................................4-1 4.2 Pre-installation Test .....................................................................4-2 4.3 Installing the SEHI .......................................................................4-2 4.3.1 Tabletop or Shelf Installation...........................................4-3 4.3.2 Rackmount Installation
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SEHI Book Page vii Friday, April 19, 1996 10:46 AM Contents APPENDIX A EPIM INFORMATION A.1 EPIM Specifications.....................................................................A-1 A.1.1 EPIM-T ............................................................................A-1 A.1.2 EPIM-F1 and EPIM-F2....................................................A-2 A.1.3 EPIM-F3 ..........................................................................A-3 A.1.4 EPIM-C...........................
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SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEHI-22FL Intelligent Stackable Hub User’s Guide. This manual provides installation instructions and reference information for the SEHI-22FL. The term SEHI (Stackable Ethernet Hub with Intelligence) is NOTE used throughout this manual when describing the features and functions of the SEHI-22FL. 1.1 USING THIS MANUAL Read through this manual to gain an understandin
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SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 1: Introduction Chapter 7, Local Management, describes how to use SEHI Local Management screens and the available commands. Appendix A, EPIM Information, provides specifications, cabling information, and switch settings for the Ethernet Port Interface Modules. Appendix B, Image File Download Using OIDs, provides instructions for setting up a TFTP server and downloading image files to the SEHI by setting specific M
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SEHI Book Page 3 Friday, April 19, 1996 10:46 AM 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: By phone (603) 332-9400 Monday – Friday; 8 A.M. – 8 P.M. Eastern Time By CompuServe GO CTRON from any ! prompt By Internet mail support@ctron.com By FTP ctron.com (134.141.197.25) Login anonymous Password your emai
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SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 2 SEHI FEATURES AND OPTIONS This chapter provides an overview of the SEHI-22FL and contains sections detailing features and available options. The term SEHI (Stackable Ethernet Hub with Intelligence) is NOTE used throughout this manual when describing features and functions of the SEHI-22FL. FRONT VIEW ® HubSTACK 10BASE-FL HUB WITH LANVIEW SECURE SEHI-22FL RX TX RX TX RX RX TX RX TX RX TX TX PWR 12 11 10 9 8 7 CPU RCV RX TX R
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SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 2: SEHI Features and Options 2.1 SEHI OVERVIEW The SEHI-22FL is an intelligent repeating hub providing front panel ports for network connections and a rear panel HubSTACK Interconnect Bus port for stackable connections. The SEHI is designed to manage the Cabletron Systems SEH series of non-intelligent stackable hubs. The SEHI-22FL provides twelve 10BASE-FL ST-type fiber optic ports and one EPIM (Ethernet Port Interface
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SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Stackable Capabilities RESET Button Resetting the hub with the front panel RESET button reboots the SEHI and initializes the processor. Local Management Manage the SEHI and attached segments through Local Management on the SEHI. Local Management provides full packet and error statistics for the entire stack, individual device, or individual port. Access Local Management by attaching a DEC VT320 terminal or a PC using VT320 emula
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SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 2: SEHI Features and Options 2.5 OPTIONAL FEATURES The following features are not included with the SEHI, but are purchased separately from Cabletron Systems. Ethernet Port Interface Modules (EPIMs) EPIMs enable the expansion of the network through a variety of media. Cabletron Systems offers the EPIMs shown in Table 2-1. Table 2-1 EPIMs EPIM Media Type Connector EPIM-A AUI DB15 (Female) EPIM-C 10BASE2 Thin Coaxial
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SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This chapter describes cabling requirements, network guidelines, and operating specifications for the SEHI. 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 can result in poor network performance. The network must meet the requirements and conditions s
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SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications 3.1.1 HubSTACK Interconnect Cable Requirements Attach the SEHI to modules in the stack with the SEHI HubSTACK Interconnect cable available only from Cabletron Systems. Refer to Chapter 1 for cable part numbers. The cable attaches to the SEHI rear panel bus port. The rear panel of the SEHI has an Interconnect Bus Out port (male connector) to stack SEH non-intelligent hubs together. Stack
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SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Cable Specifications 3.1.3 10BASE-T UTP and STP Cable Specifications The devices and 10BASE-T Twisted Pair Segments connected to an SEHI EPIM-T module must meet the IEEE 802.3 10BASE-T specifications shown below: Length The IEEE 802.3 10BASE-T standard requires that 10BASE-T devices transmit over a 100 meter (328 foot) link using 22-24 AWG Unshielded Twisted Pair (UTP) wire. However, cable quality largely determines the maximum link length.
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SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications Crosstalk Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 10BASE-T transceivers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements. Noise Noise is caused by either crosstalk or externally induced impulses. Impulse noise may cause data error
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SEHI Book Page 5 Friday, April 19, 1996 10:46 AM COM Port Requirements 3.3 COM PORT REQUIREMENTS The RJ45 COM port supports access to a Local Management Console. The Console port supports a Digital Equipment Corporation, VT320 terminal or PC emulation of the VT320 terminal. Figure 3-2 shows the pinouts for the RJ45 COM port. 1 2 3 4 5 6 7 8 COM 165201 5. Signal Ground 1. Transmit Data 6. Data Terminal Ready 2. Data Carrier Detect 7. Request To Send 3. Data Set Ready 8. Clear To Send 4. Rec
