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SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM
SEHI100TX-22 100BASE-T
INTELLIGENT STACKABLE HUB
USER’S GUIDE
®
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SEHI Book Page i Wednesday, May 15, 1996 10:42 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 FOR ANY INCIDE
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SEHI Book Page ii Wednesday, May 15, 1996 10:42 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 ru
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SEHI Book Page iii Wednesday, May 15, 1996 10:42 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 medi
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SEHI Book Page iv Wednesday, May 15, 1996 10:42 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 Def
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SEHI Book Page v Wednesday, May 15, 1996 10:42 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 SE
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SEHI Book Page vi Wednesday, May 15, 1996 10:42 AM Contents CHAPTER 5 CONNECTING TO THE NETWORK 5.1 Connecting the SEHI to the Network ...........................................5-1 5.1.1 Connecting to Network Ports...........................................5-1 5.1.2 Connecting a UTP Segment to an EPIM-100TX.............5-2 5.1.3 Connecting a Fiber Segment to the EPIM-100FX...........5-4 5.2 Testing the Installation .................................................................5-5
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SEHI Book Page vii Wednesday, May 15, 1996 10:42 AM Contents 7.9 The Device Statistics Screen..................................................... 7-21 7.9.1 Selecting the Appropriate Module/Port ......................... 7-23 7.9.2 Using the ENABLE PORT Command........................... 7-24 7.9.3 Using the DISABLE PORT Command.......................... 7-24 7.9.4 Exiting the Device Statistics Screen ............................. 7-24 APPENDIX A EPIM SPECIFICATIONS A.1 EPIM Specifi
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SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEHI100TX-22 100BASE-T Intelligent Stackable Hub User’s Guide. This manual provides installation instructions, troubleshooting, and reference information for the SEHI100TX-22. The term SEHI (Stackable Ethernet Hub with Intelligence) is NOTE used throughout this manual when describing the features and functions of the SEHI100TX-22. 1.1 USING THIS MANUAL Read th
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SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 1: Introduction Appendix A, EPIM Specifications, 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 an image file to the SEHI by setting specific MIB OID strings. 1.2 DOCUMENT CONVENTIONS The following conventions are used throughout this document: N
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SEHI Book Page 3 Wednesday, May 15, 1996 10:42 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 ema
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SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM CHAPTER 2 SEHI FEATURES AND OPTIONS This chapter provides an overview of the SEHI and contains sections detailing features and available options. The terms SEHI (Stackable Ethernet Hub with Intelligence) and NOTE SEH (Stackable Ethernet Hub) are used throughout this manual when describing the features and functions of the SEHI100TX-22 and the SEH100TX-22. FRONT VIEW HubSTACK 100BASE-TX HUB WITH LANVIEW® SEHI100TX-22 RCV LNK A 2
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SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 2: SEHI Features and Options The SEHI100TX-22 operates in a 100BASE-T Ethernet network. This product will NOT operate in a 10BASE-T ! CAUTION environment. Connect the SEHI100TX-22 and SEH100TX-22 only to similar 100BASE-T products. The SEHI100TX-22 supports the EPIM-100TX and the EPIM-100FX. No other Cabletron Systems EPIMs operate in this device. 2.2 SEHI FEATURES Repeater Functionality The SEHI fully conforms to the
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SEHI Book Page 3 Wednesday, May 15, 1996 10:42 AM 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 SEHI front panel. RESET Button Resetting the hub with the front panel RESET Button reboots the SEHI and initializes the processor. Resetting the SEHI also resets all
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SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 2: SEHI Features and Options 2.4 RACK MOUNTING CAPABILITIES The SEHI can be installed in a 19-inch rack. Cabletron Systems provides brackets and mounting screws with the SEHI. See Chapter 4, Installation, for complete rack mounting instructions. 2.5 REMOTE NETWORK MANAGEMENT Manage the SEHI remotely with any SNMP network management system. Cabletron Systems offers the following remote management packages: • Cabletron
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SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This Chapter describes cabling requirements, network guidelines, and operating specifications for the SEHI100TX-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 S
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SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM 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 SEHI 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 be capable o
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SEHI Book Page 3 Wednesday, May 15, 1996 10:42 AM 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 attenua
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SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM 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 re
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SEHI Book Page 5 Wednesday, May 15, 1996 10:42 AM Network Port Specifications SEHI100TX-22 Repeater A B DTE DTE Figure 3-1 Class I Network 3.3 NETWORK PORT SPECIFICATIONS The SEHI network ports use shielded RJ45 connectors that support UTP cabling. Figure 3-2 shows the RJ45 pinouts. 1 2 3 4 5 6 7 8 11X 10X 9X 1. Receive + 5. Not Used 2. Receive - 6. Transmit - 3. Transmit + 7. Not Used 4. Not Used 8. Not Used 09162_02 Figure 3-2 RJ45 Network Ports 3.4 COM
