Cabletron Systems TRMIM-62A User Manual

Token ring media interface module

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TRMIM-62A
TOKEN RING MEDIA INTERFACE MODULE
USER'S GUIDE

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Summary of Contents for Cabletron Systems TRMIM-62A

  • Page 1 TRMIM-62A TOKEN RING MEDIA INTERFACE MODULE USER’S GUIDE...
  • Page 3 Order Number: 9031753-01 October 1996 SPECTRUM, LANVIEW, and FNB are registered trademarks of Cabletron Systems, Inc. MMAC, MMAC-M3FNB, MMAC-M8FNB TRMM, TRMMIM, and TRMIM-62A are trademarks of Cabletron Systems, Inc. All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies.
  • Page 4: Fcc Notice

    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 rules.
  • Page 5 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.
  • Page 6: United States Government Restricted Rights

    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.
  • Page 7: Table Of Contents

    CHAPTER 1 INTRODUCTION Getting Help... 1-2 Document Conventions ... 1-2 Using This Manual... 1-2 TRMIM-62A Features ... 1-3 1.4.1 Active TCU Lobe Ports ... 1-3 1.4.2 Jumper-Selectable Ring Speed ... 1-4 1.4.3 Speed-Fault Protection ... 1-4 1.4.4 Beaconing Protection... 1-4 1.4.5...
  • Page 8 CONTENTS CHAPTER 3 INSTALLATION Unpacking And Handling The TRMIM-62A ...3-1 Installing The TRMIM-62A ...3-2 Attaching Stations ...3-4 Checking The Installation...3-6 CHAPTER 4 MONITORING AND TROUBLESHOOTING Using LANVIEW LEDs ...4-1 Troubleshooting The Network ...4-3 INDEX...
  • Page 9: Chapter 1 Introduction

    Welcome to the TRMIM-62A Token Ring Media Interface Module User’s Guide. This manual describes how to configure, install, and attach stations to the TRMIM-62A. It also describes how to monitor the operational status of the module and how to troubleshoot any operational or installation problems that may arise.
  • Page 10: Getting Help

    INTRODUCTION 1.1 GETTING HELP If you need technical assistance with the TRMIM-62A, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone By CompuServe By Internet mail By FTP Login Password 1.2 DOCUMENT CONVENTIONS...
  • Page 11: Trmim-62A Features

    Chapter 2, Requirement and Specifications, provides installation and cabling guidelines for ensuring optimal performance from the installation. It also describes how to configure the TRMIM-62A ring speed and lists safety, physical, and environmental specifications. Chapter 3, Installation, describes guidelines and procedures for unpacking and handling, configuring, and installing the TRMIM-62A and...
  • Page 12: Jumper-Selectable Ring Speed

    LED indicates the port bypassed, and the station is denied access to the ring. See Chapter 4 for more information about LEDs. Check the 16Mb LED on the front panel of the TRMIM-62A to NOTE determine the TRMIM-62A ring operating speed. To avoid speed fault errors, ensure that the station inserting into the ring is running at the same ring speed as the ring.
  • Page 13: Trmim-62A Management

    LANVIEW LEDs (Light Emitting Diodes) located on the front panel of the module provide a visual monitoring and diagnostic system for the TRMIM-62A.They indicate the ring speed, the presence of a hardware error, the management status of the module, and the operational status of lobe ports.
  • Page 14: Recommended Reading

    INTRODUCTION 1.6 RECOMMENDED READING The following publications provide information useful for designing and implementing Token Ring networks. Local Area Networks, IEEE Standard 802.5 Token Ring Access Method And Physical Layer Specifications Commercial Building Wiring Standard, TIA/EIA-568A Standard...
  • Page 15: Chapter 2 Requirements And Specifications

    MMAC without an FNB backplane. • The TRMIM-62A can only be installed into any slot on the MMAC-M5FNB/M8FNB or MMAC-5FNB/8FNB except the right-most management slot. It can only be installed into any slot on the MMAC-M3FNB or MMAC-3FNB except the bottom management slot.
  • Page 16: Management Module Requirements

    Token Ring network lobe connections. 2.3.1 Maintaining Port/Cabling Impedance Matching Impedance matching between TRMIM-62A lobe ports and lobe cable is an important factor in maintaining optimal performance from the network installation. Basically, impedance is the total resistance, measured in ohms, that a circuit offers to electrical data signals.
  • Page 17: Setting The Ring Speed

    2.4 SETTING THE RING SPEED The default ring speed setting for the TRMIM-62A is 16 Mbps. To set the ring operating speed (4 or 16 Mbps), position the JP1 jumper on the setting you want, as shown in Figure 2-1. See Section 2.4.1 for...
  • Page 18: Management Configuration Overrides

    TRMIM-62A running at a different ring speed in the MMAC, you can try any of the following procedures: • Reinsert the TRMIM-62A in a slot other than its original slot after you have changed the JP1 setting. •...
  • Page 19: General Specifications

    NVRAM, see the user’s guide included with the management module. If the ring is managed by either a TRMM-2, a TRMM-4, or a TRBMIM-T management board, a TRMIM-62A with a different JP1 ring speed setting retains its setting and is bypassed from the ring under all circumstances.
  • Page 20 REQUIREMENTS AND SPECIFICATIONS...
  • Page 21: Chapter 3 Installation

    This chapter describes how to unpack, handle, and install the TRMIM-62A. It also describes how to attach Token Ring stations to the TRMIM-62A. 3.1 UNPACKING AND HANDLING THE TRMIM-62A Electrostatic Discharge (ESD) can damage the TRMIM-62A. To prevent ESD damage when handling the module: wear the...
  • Page 22: Installing The Trmim-62A

    If you detect damaged components, call Cabletron Systems Technical Support for assistance. 3. Secure the TRMIM-62A to the MMAC by tightening the knobs on the TRMIM-62A. Failure to tighten down the knobs may result in a faulty connection to the MMAC backplane.
  • Page 23 M3FM Installation in an MMAC-M3FNB/-3FNB MMAC-M8FNB Installation in an MMAC-M8FNB/-M5FNB or MMAC-8FNB/-5FNB Figure 3-1 Installing The TRMIM-62A MMAC-M3FNB INSTALLATION M3PSM TRMM TRMIM-62A COAXIAL TOKEN RING...
  • Page 24: Attaching Stations

    Before connecting lobe cables, review the cabling recommendations described in Section 2.3. To connect a station to the TRMIM-62A: 1. Attach the Lobe Access Unit (LAU) BNC-to-DB9 male adaptor to the female DB9 STP port on the station’s network interface card as shown in Figure 3-2.
  • Page 25 2. Insert the BNC connector on the lobe cable into any lobe port on the TRMIM-62A. Insert the other BNC connector on the lobe cable to the LAU as shown in Figure 3-3. 3. Repeat these steps for each station.
  • Page 26: Checking The Installation

    With power on at the MMAC and the attached stations, check that the red ERR LED on the TRMIM-62A is not lit, and that no error conditions exist at the attached stations. The green LNK LEDs should be illuminated for each station that is inserted into the ring as well as the corresponding yellow PEN LEDs for ports that are enabled.
  • Page 27: Chapter 4 Monitoring And Troubleshooting

    4.1 USING LANVIEW LEDS LANVIEW is Cabletron Systems front-panel, visual diagnostic and status monitoring system. You can use the LANVIEW LEDs (see Figure 4-1) to determine the TRMIM-62A’s operational status, help diagnose network problems, and pinpoint faulty node segments. LANVIEW...
  • Page 28 MONITORING AND TROUBLESHOOTING LEDs are described as follows: • 16Mb - The Ring Speed LED lights yellow when the TRMIM-62A ring speed is set to 16 Mbps. When it is not lit, the ring speed is set to 4 Mbps.
  • Page 29: Troubleshooting The Network

    4.2 TROUBLESHOOTING THE NETWORK This section describes troubleshooting procedures you can perform to diagnose and correct problems with the TRMIM-62A and other MIMs in the MMAC. The following procedures usually help resolve problems typically encountered with network installations: • Check the status of the LEDs on all MIMs in the MMAC. See Section 4.1 for a complete description of LEDs for the TRMIM-62A...
  • Page 30 See Section 2.3.2 for information about maximum lobe cable lengths for the TRMIM-62A. See equivalent cabling and station-count guidelines specified in the user guides included with other MIMs installed in the MMAC.
  • Page 31 Active TCU lobe ports 1-3 Attaching stations 3-4 Automatic Beacon Recovery Process (ABRP) 1-4 Beaconing speed fault protection from 1-4 Beaconing protection 1-4 BNC connector 2-3, 3-5 BNC port 3-4 BNC-to-DB9 adaptors connecting to station 3-4 Cabling general guidelines 2-2 port/cabling impedance matching 2-2 recommended lobe lengths 2-3...
  • Page 32 Speed fault PEN LED indication of 4-2 protection 1-4 Station attachment 3-4 to 3-5 Temperature operating range 2-5 storage range 2-5 TRMIM-62A cabling guidelines 2-2 to 2-3 installation in MMACs 3-2 MMAC restrictions 2-1 physical specifications 2-5 recommended reading 1-5 IX-2...

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