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Manual Cabletron Systems 24

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Summary
  • Cabletron Systems 24 - page 1

    CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005 STH-22/-24/-42/-44 STACKABLE TOKEN RING HUB USER’S GUIDE ...

  • Cabletron Systems 24 - page 2

    NOTICE iii 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 chan ...

  • Cabletron Systems 24 - page 3

    NOTICE iv 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 com ...

  • Cabletron Systems 24 - page 4

    NOTICE v 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? ...

  • Cabletron Systems 24 - page 5

    NOTICE vi EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY 1. 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 ...

  • Cabletron Systems 24 - page 6

    NOTICE vii 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 ...

  • Cabletron Systems 24 - page 7

    CONTENTS ix CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 STH Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2.1 LANVIEW LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.2 TCU Ports . . . . . . . . . . . . . . . . . . . . . . ...

  • Cabletron Systems 24 - page 8

    CONTENTS x CHAPTER 3 INSTALLATION 3.1 Unpacking the STH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 Installing the STH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2.1 Rack Mount or Wall Mount Hardware. . . . . . . 3-1 3.2.2 Adding the STH to a Stack . . . . . . . . . . . . . . . . . 3-2 3.2.3 Attaching th ...

  • Cabletron Systems 24 - page 9

    Page 1-1 CHAPTER 1 INTR ODUCTION W elcome to the Cabletron Systems STH-22/-24/-42/-44 Stackable Token Ring Hub User’s Guide . The STH (Stackable Token Ring Hub) is a non- intelligent hub designed to provide expanded connectivity for Cabletr on Systems’ STHi intelligent hubs and Cabletron Systems Micr oMMAC intelligent hubs. This manual provides ...

  • Cabletron Systems 24 - page 10

    STH Overview Page 1-2 Connector Ports (TCUs) for connections to stations and other network devices. Figure 1-1. Front and Back Views of the STH-24 Up to four STH hubs can be linked to the same intelligent hub, bringing the total direct connectivity potential to 120 managed TCU ports in the stack. Intelligent hubs serve as the logical “top” of t ...

  • Cabletron Systems 24 - page 11

    LANVIEW LEDs Page 1-3 1.2.1 LANVIEW LEDs Cabletron Systems’ LANVIEW Status Monitoring and Diagnostics System is a troubleshooting tool. Conveniently located on the fr ont panel, LANVIEW LEDs help the user to quickly identify power failures, beaconing conditions, cable faults, and link problems. Refer to Section 4.1, LANVIEW LED Signals for more i ...

  • Cabletron Systems 24 - page 12

    Automatic Beacon Recovery Process Page 1-4 wrong ring speed. If a ring speed mismatch is detected, the STH disables the port to keep the misconfigured station isolated fr om the ring and provides a simple visible LED signal (blinking r ed at the port’s LED) to indicate to the user that Speed Fault Protection has disabled the port. The port remai ...

  • Cabletron Systems 24 - page 13

    Related Manuals Page 1-5 By default, each of the STH hub’s TCU ports is configured to its STN (station) setting to support concentrator lobe connections to stations. Through Local Management, any TCU port may be r econfigured to its RO (Ring Out) setting to support connections to passive MAU (Multi- Station Access Unit) workgroups. Improved Pro ...

  • Cabletron Systems 24 - page 14

    Related Manuals Page 1-6 Figure 1-2. Improved Beacon Recovery Resolution for MAUs (8 Stations) (8 Stations) (8 Stations) (8 Stations) STH TCUs Ring Out Ring Out Ring Out Ring Out Multi-Station Access Units Ring In Ring In Ring In Ring In When each MAU is individually connected to the STH hub, only one MAU must be bypassed to isolate the hub from a ...

  • Cabletron Systems 24 - page 15

    Getting Help Page 1-7 1.4 Getting Help If you need additional support related to the Cabletr on Systems STH, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems T echnical Support: By phone: (603) 332-9400 Monday-Friday; 8am - 8pm EST By CompuServe ® : GO CTRON from any ! prompt By Internet mail ...

  • Cabletron Systems 24 - page 16

    Page 2-1 CHAPTER 2 REQUIREMENTS & SPECIFIC A TIONS This chapter describes network guidelines, power requir ements, and operating specifications for the STH. Before installing the STH, r ead this chapter and confirm that the network meets the requir ements and conditions specified in this chapter . Failure to follow these guidelines could res ...

  • Cabletron Systems 24 - page 17

    General Considerations Page 2-2 to re-r oute cabling away from potential noise sour ces, or to ensure that the electrical wiring in the area is pr operly wired and gr ounded, or to replace connectors along af fected segments. Temperature The attenuation of PVC-insulated cable varies significantly with temperature. Check the cable manufactur er ’ ...

  • Cabletron Systems 24 - page 18

    Cable Specifications Page 2-3 • Where practical, dedicated cable should be used for Token Ring signals. • Work area wall plates and outlets used for the Token Ring network should be clearly labeled as Token Ring network lobe connections. 2.2 Cable Specifications T ake care in planning and pr eparing the cabling and connections for the network. ...

  • Cabletron Systems 24 - page 19

    UTP Cable Categories Page 2-4 Category 3 consists of (usually) four Unshielded T wisted Pairs of 24 A WG solid wire for data or voice communication. (IBM T ype 3 is coincidentally the same as UTP Category 3.) It is typically used to wir e cable runs within the walls of buildings. In some installations, pr e- existing UTP building wiring can be used ...

  • Cabletron Systems 24 - page 20

    UTP Lobe Lengths Page 2-5 UTP cabling to any non-Token Ring network conductors (telephone, etc.) or ground. If in doubt, test wiring before using. 2.3.2 UTP Lobe Lengths The physical length of the cable connecting a station to a TCU port on the concentrator is referr ed to as the lobe length . The maximum lobe length attainable with the concentrato ...

  • Cabletron Systems 24 - page 21

    STP Cable Categories Page 2-6 2.4.1 STP Cable Categories The supported STP cable types meet the following specifications: IBM T ype 1 consists of two shielded twisted pairs (STP) of 22 A WG solid wire for data. Used for the longest cable r uns within the walls of buildings. IBM T ype 2 consists of six pairs of unshielded twisted pairs of 24 A WG s ...

  • Cabletron Systems 24 - page 22

    TCU Specifications Page 2-7 2-4. Cable routing, connector attenuation, noise and cr osstalk can adversely affect the maximum lobe length. Mixed STP Cable Types If cable types are to be mixed in the LAN, compensations must be made for the differ ent cable attenuations. For example, T ype 6 & 9 cables can be run for only 2/3 the distance of T ype ...

  • Cabletron Systems 24 - page 23

    Operating Specifications Page 2-8 On STH models -42/-44, each RJ45 connector is encased in a metallic shield which provides a means of connection for the STP cable shield. Shield continuity is maintained by contacts within the female RJ45 that contact the metallic casing of the male RJ45 on the STP lobe cabling. Shielded patch cables that adapt a s ...

  • Cabletron Systems 24 - page 24

    Ring Sequence Page 2-9 Note: When cancelling a MIB override, the user may have to perform the switch and power-cycle procedure twice (as described in the steps below) to actually change the STH hub’s ring speed by the switch. T o return to switch contr ol from an MIB overridden Ring Speed setting: 1. Regain switch control. Change the current swit ...

  • Cabletron Systems 24 - page 25

    Environmental Requirements Page 2-10 under all conditions of line at full load. The minimum and maximum load current fr om each output is shown below . 2.6.4 En vironmental Requirements Operating Temperature: +5 ° to +50 ° C Non-operating Temperature: -30 ° to +90 ° C Operating Humidity: 5 to 95% (non-condensing) 2.6.5 Safety This equipment is ...

  • Cabletron Systems 24 - page 26

    Page 3-1 CHAPTER 3 INST ALLATION This chapter outlines the procedur e for installing the STH and adding it to a stack. Confirm that the network meets the guidelines and requir ements outlined in Chapter 2, Installation Requirements/ Specifications , before installing the STH. 3.1 Unpacking the STH Unpack the STH as follows: 1. Carefully remove th ...

  • Cabletron Systems 24 - page 27

    Adding the STH to a Stack Page 3-2 3.2.2 Adding the STH to a Stack STH hubs are star -wired to the intelligent hub. T o add STH hubs to a stack, refer to Figur e 3-1 and perform the following steps: 1. Attach an STH HubSTACK Interconnect cable to the "STACK" port on the rear panel of an STH. 2. Attach the other end of the cable to one of ...

  • Cabletron Systems 24 - page 28

    Attaching the Strain Relief Bracket Page 3-3 3.2.3 Attaching the Strain Relief Bracket Attach the strain relief bracket to the fr ont of the STH as follows: 1. Locate the strain relief bracket and four 8-32 x 3/8" screws from the STH-ACCY-KIT package. Warning : Use of longer screws may cause damage to the unit or electrical shock. 2. Carefully ...

  • Cabletron Systems 24 - page 29

    Wall-Mounting the STH Page 3-4 Figure 3-3. Installing the Rack-Mount Brackets Figure 3-4. Installing the STH in a Rack 3.2.5 Wall-Mounting the STH When an STH is installed on a wall, its cable connections must face down to prevent the sideways str esses of hanging cables from compr omising the connection at the port. Note : 1/4-inch anchors for wal ...

  • Cabletron Systems 24 - page 30

    Wall-Mounting the STH Page 3-5 Figure 3-5. Installing the Wall Mounting Brackets 2. Select the wall location for the STH within 7 feet of a power outlet. Warning : There is a SHOCK HAZARD whe drilling into walls containing electrical wiring . Select a wall location where drill bits and screw anchors will not come in contact with electrical wiring i ...

  • Cabletron Systems 24 - page 31

    Free-Standing Installation Page 3-6 Figure 3-6. Wall-mounting the STH 3.2.6 Free-Standing Installation For a free-standing shelf or tabletop installation, install the STH on an unrestricted fr ee surface area 21 inches wide, 18 inches deep and 6 inches high, within 7 feet of its power source, as shown in Figur e 3-7. Figure 3-7. Shelf or Table-top ...

  • Cabletron Systems 24 - page 32

    Connecting the STH to the Power Source Page 3-7 3.2.7 Connecting the STH to the Power Source Note : The STH has a universal power supply which will accept power sources from 90 Vac to 264 Vac, 47-63 Hz. T o connect the STH to the power source: 1. Plug the power cord into the back panel of the STH. 2. Plug the other end of the power cord into a grou ...

  • Cabletron Systems 24 - page 33

    Finishing the Installation Page 3-8 c. Check that the twisted pair connection meets dB loss and cable specifications outlined Chapter 2. If a link still has not been established, contact Cabletron Systems T echnical Support. 3.3 Finishing the Installation The STH is now ready for operation. Befor e placing the network into service, test the install ...

  • Cabletron Systems 24 - page 34

    Page 4-1 CHAPTER 4 TR OUBLESHOO TING This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network pr oblems. 4.1 LANVIEW LED Signals The STH incorporates the Cabletron Systems LANVIEW Status Monitoring and Diagnostics System. LANVIEW LEDs can help diagnose problems such as a power failur e or a cable fault. The S ...

  • Cabletron Systems 24 - page 35

    Trouble Resolution Page 4-2 Loss Of Power If the STH is having power problems, check the power delivery system (power cable, power outlet, circuit br eaker , fuse). Loss of Contact with Intelligent Hub If the ST ACK LED is indicating disconnection from the intelligent hub, it may be that the intelligent hub has placed the STH in bypass to protect i ...

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A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Cabletron Systems 24, service manual, brief instructions and user manuals Cabletron Systems 24. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Cabletron Systems 24.

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A complete manual for the device Cabletron Systems 24, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Cabletron Systems 24 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Cabletron Systems 24.

A complete Cabletron Systems manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Cabletron Systems 24 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Cabletron Systems 24, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Cabletron Systems 24, that we can find in the current document
3. Tips how to use the basic functions of the device Cabletron Systems 24 - which should help us in our first steps of using Cabletron Systems 24
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Cabletron Systems 24
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Cabletron Systems 24 in a specific country, if it was not possible to solve the problem on our own.

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