1. Manuals
  2. Brands
  3. Cabletron Systems Manuals
  4. Repeater
  5. TDRMIM-42A
  6. User manual

Cabletron Systems TDRMIM-42A User Manual

Token ring dual repeater mim
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
TDRMIM-22A/42A
TM
TOKEN RING DUAL REPEATER MIM
USER'S GUIDE

Advertisement

Table of Contents
loading

Related Manuals for Cabletron Systems TDRMIM-42A

Summary of Contents for Cabletron Systems TDRMIM-42A

  • Page 1 TDRMIM-22A/42A TOKEN RING DUAL REPEATER MIM USER’S GUIDE...
  • Page 2 TDRMIM Quick Reference Card Switchblock SW1 Side View of the TDRMIM FNB Ring 1 Speed Default: [Leave OFF] [Unused] [Unused] Switchblock SW1 with Factory Default Settings TRANSMIT + RECEIVE - RECEIVE + TRANSMIT - Motherboard Daughterboard ON = 16 Mbps; OFF = 4 Mbps Ring Ports 1 Ring In Ring Ports 1 Ring Out Ring Ports 2 Ring In...
  • Page 3 ALL LED SIGNALS Normal operation Hardware error condition, or reset in process Module Bypass—No ports inserted in FNB rings FNB interfaces active Management control in effect MGMT (hardware default switches overridden) Hardware defaults in effect MGMT 16 Mbps ring speed in effect 16 MB 4 Mbps ring speed in effect 16 MB...
  • Page 4 NOTICE 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.
  • Page 5 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 6 CABLETRON SOFTWARE PROGRAM LICENSE 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.
  • Page 7 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 8: Table Of Contents

    CHAPTER 1 Introduction 1.1 Using This Manual ....... 1-2 1.2 About the TDRMIM ......1-2 1.2.1 Ring In/Ring Out Ports .
  • Page 9 CONTENTS 2.5.5 LANVIEW LEDs ......2-12 2.6 Other Specifications ......2-12 2.6.1 Hardware Specifications .

  • Page 10: Chapter 1 Introduction

    Media Interface Module User’s Guide. This manual is a reference for the installation and troubleshooting of Cabletron Systems’ TDRMIM-22A and TDRMIM-42A modules, represented in Figure 1-1. The TDRMIM is an active cluster-switching twisted pair concentrator with dual multimode fiber Ring In/Out repeater ports for Token Ring expansions.

  • Page 11: Using This Manual

    Using This Manual 1.1 Using This Manual Prior to installing and operating the TDRMIM, read through this manual completely. If you are not familiar with port switching and four-ring FNB applications, read Appendix A, Introduction to Port Switching. This manual assumes users to have a working knowledge of Token Ring (IEEE 802.5) networks.

  • Page 12: Ring In/Ring Out Ports

    • Cable fault Autowrap on fiber optic trunk ports • Multi Ring Out connectivity for passive MAU workgroups • LANVIEW LEDs for “at-a-glance” diagnostic monitoring 1.2.1 Ring In/Ring Out Ports The dual multimode fiber Ring Port sets (Ring Ports 1 and Ring Ports 2) support two fully redundant ring extensions to other hubs up to 2 Km away from the MMAC.

  • Page 13: Lobe Ports

    TCU (Trunk Coupling Unit) or Multi Ring Out connections. TDRMIM-22A supports UTP cabling (Unshielded Twisted Pair) and TDRMIM-42A supports STP (Shielded Twisted Pair). The RJ45 connectors used in the TDRMIM-42A (for STP cabling) provide a grounded connection for the cabling shield.

  • Page 14: Cluster Switching

    result is enhanced signal integrity and extended maximum lobe cable distances. For length specifications for UTP and STP lobe cables, see Section 2.2.2, UTP Cable Lengths to Stations and Section 2.3.2, STP Cable Lengths to Stations. Ring Speed Fault Protection TDRMIMs provide Ring Speed Fault Protection on each lobe port to protect against beaconing conditions caused by stations inserting at the wrong ring speed.
  • Page 15 About the TDRMIM As with port-switching MIMs, the cluster-switching TDRMIM requires the support of a port-assigning management module such as the TRMM-2 or TRMM-4 to switch its connections. With this support, the Clusters may be individually assigned to any of the four vertically stacked FNB rings (illustrated in Figure 1-4) on the MMAC backplane.

  • Page 16: Automatic Configuration At Power-Up

    FNB 1 while the TRMM-2’s STATION port interface is operating through that Cluster. For if allowed, such a switch would create the prohibited condition of redundant management on FNB 1. 1.2.4 Automatic Configuration at Power-Up The management module in the TDRMIM’s host MMAC stores all user-configured ring assignments and speed settings in its battery-backed NVRAM (Non-Volatile Random Access Memory).

  • Page 17: Support For Passive Mau Workgroups

    About the TDRMIM 1.2.5 Support for Passive MAU Workgroups The TDRMIM’s RJ45 lobe ports default to their TCU configuration to support station connections, but they also offer a Multi Ring Out override to support connections to passive MAU (Multi-Station Access Unit) workgroups.
  • Page 18 DAISY-CHAIN CONFIGURATION When MAUs are daisy-chained, they are connected as a single collective entity. To isolate the hub from a beaconing MAU station, the entire chain must be bypassed. All MAU stations lose their connection to the hub if beaconing occurs on just one MAU station. Ring Ring MULTI RING OUT CONFIGURATION...

  • Page 19: Lanview Leds

    Supplemental Information 1.2.7 LANVIEW LEDs The LANVIEW LED system comprises several LEDs, located on the front panel of the TDRMIM. Operating as an “at-a-glance,” visual diagnostic and status monitoring system, they light, blink, and flash in various colors to indicate various network and module-specific conditions, thereby facilitating the quick diagnosis of physical layer network problems.

  • Page 20: Getting Help

    Commercial Building Wiring Standard, EIA Standard Proposal No. 1907-B (if approved, to be published as EIA/TIA-568) LAN Troubleshooting Handbook, Mark Miller (1989, M&T Publishing) 1.3.3 Getting Help If you need additional support related to Cabletron Systems Token Ring products, or if you have any questions, comments, or suggestions related to this manual, please contact Cabletron Systems Technical Support: By phone: By CompuServe:...

  • Page 21: Chapter 2 Requirements And Specifications

    Requirements and Specifications Before installing the TDRMIM, review the recommendations and requirements outlined in this chapter. Failure to follow these guidelines could result in poor network performance. 2.1 General Cabling Considerations Take care in planning and preparing the cabling and connections for the network.

  • Page 22: Installation Recommendations

    General Cabling Considerations 2.1.3 Installation Recommendations For optimum network performance, make sure that twisted pair cabling installations comply with the following recommendations: • Keep UTP cabling free of splices, stubs, or bridged taps. • Do not use more than two punch-down blocks between TCU ports and wall outlets.

  • Page 23: Utp Cabling Specifications

    Table 2-1. Token Ring Network Performance Requirements Maximum Total Signal Attenuation 14.5dB All STP cables of IBM Type 1, 2, 6, and 9 meet Token Ring network performance requirements. All category 5, all category 4, and some category 3 (see Section 2.2.2, UTP Cable Lengths to Stations) UTP cables also meet these requirements.
  • Page 24 UTP Cabling Specifications Table 2-2. UTP Cable Category Specifications Operating Cat. Frequency 4 MHz 16 MHz 4 MHz 16 MHz 4 MHz 16 MHz *below Token Ring performance requirement of Category 3 usually consists of four Unshielded Twisted Pairs of 24 AWG solid wire for data or voice communication.

  • Page 25: Utp Cable Lengths To Stations

    2.3 STP Cabling Specifications The TDRMIM-42A supports all STP cables classified as IBM Types 1, 2, 6, and 9. All cables meeting the criteria for classification as IBM Type 1, 2, 6, or 9 meet Token Ring network performance requirements.

  • Page 26: Stp Cable Lengths To Stations

    STP Cabling Specifications Table 2-4. STP Cable Type Specifications. Operational Type Frequency 1 & 2 4 MHz 16 MHz 6 & 9 4 MHz 16 MHz IBM Type 1 consists of two shielded twisted pairs (STP) of 22 AWG solid wire for data.

  • Page 27: Fiber Optic Cable Specifications

    Table 2-5. STP Maximum Lobe Lengths. Types 1 & 2 6 & 9 Mixed STP Cable Types If cable types are to be mixed in the installation, compensations must be made for the different cable attenuations. For example, Type 6 & 9 cables can be run for only 2/3 the distance of Type 1: 100 meters (Type 1) 66 meters (Types 6, 9).

  • Page 28: Tdrmim Operating Specifications

    TDRMIM Operating Specifications 2.5 TDRMIM Operating Specifications This section describes the operating specifications for each of the active Token Ring concentrator modules. Cabletron Systems reserves the right to change these specifications at any time without notice. 2.5.1 Switchblock SW1 The TDRMIM has a switchblock called SW1 (see Figure 2-1). Use its switches (see Figure 2-2) to configure the following: •...
  • Page 29 FNB Ring 1 Speed Default: [Leave OFF] [Unused] [Unused] Figure 2-2. Switchblock SW1 with Factory Default Settings Default Ring Speed of FNB Ring 1 Use Switch #1 to set the default ring speed for FNB ring 1: ON for 16 Mbps, and OFF for 4 Mbps. All other rings default to 16 Mbps. This switch setting is relevant only in the absence of configuration commands from a management module.

  • Page 30: Media Filters

    TDRMIM Operating Specifications 2.5.2 Media Filters When connecting Token Ring stations that are not equipped with a Type 3 Media Filter to the TDRMIM-22A (UTP), install a Type 3 Media Filter (such as the Cabletron Systems TRMF or TRMF-2) in line with the lobe cable at the Token Ring station connection.

  • Page 31: Ring Sequence

    TDRMIM Operating Specifications MIC Connector RJ45 Plug Black Green Blue Orange Transmit -... Pin 3 ... to ...Black ... Transmit - Receive +... Pin 4 ... to ...Blue ... Receive + Receive -... Pin 5 ... to ...Green ... Receive - Transmit +...

  • Page 32: Lanview Leds

    Section 4.2, LANVIEW LED Signals, discusses in detail the function of each LANVIEW LED. 2.6 Other Specifications 2.6.1 Hardware Specifications Backplane Connections: Lobe Cables Supported: TDRMIM-42A: TDRMIM-22A: RI/RO Cables Supported: Physical Dimensions: 2.6.2 Environmental Requirements Operating Temperature: Storage Temperature: Relative Humidity: 2.6.3...

  • Page 33: Service

    This product conforms to the following standards: Safety • UL 1950 • CSA C22.2 No.950 • EN 60950 • FCC Part 15 Class A • EN 55022 Class A • VCCI Class I • EN 50082-1 • IEC 801-2 • IEC 801-3 •...

  • Page 34: Chapter 3 Installation

    This chapter explains how to install the TDRMIM into a Cabletron Systems MMAC product and to connect network devices to the TDRMIM’s lobe ports. This unit must be installed by qualified personnel only. Failure to follow instructions could result in the presence of a shock hazard. CAUTION 3.1 General Considerations Before installing and operating the TDRMIM, confirm that the network...

  • Page 35: Unpacking The Tdrmim

    Installation 3.2.1 Unpacking the TDRMIM Unpack and visually inspect the TDRMIM for damage: Electrostatic Discharge (ESD) can damage the module. Take precautions against ESD. When handling the module, hold only the edges of the board or the metal front panel. Avoid touching the CAUTION components or surface of the board.

  • Page 36: Boot-Up Check

    MMAC M8 FNB Figure 3-1. Installing the TDRMIM 3.2.4 Boot-Up Check Table 3-1 describes the LANVIEW LED activity for three instances of TDRMIM operation. The first represents the moment of power-on. The second and third both represent possible post boot-up modes: management mode and default mode.

  • Page 37: Connecting Twisted Pair Cabling

    Installation Table 3-1. LANVIEW LED Activity at First Boot-up (Continued) At moment of LED label Power-on Ring 1 16 Mb determined by other rings 16 Mb IN USE (all) Port (all) PEN (all) LNK (all) Boot-up may take a few minutes. When the Port LEDs turn from RED to off, boot-up is complete.
  • Page 38 (UTP) lobe cabling to the Type 1 (STP) interface provided with many Token Ring stations. The twisted pair cabling used with the TDRMIM-42A/44A requires shielded RJ45 connections to attain the maximum lobe lengths listed in Chapter 2, Installation Requirements & Specifications. Shielded patch cables that adapt a shielded RJ45 to a Data Connector (MIC) are available from Cabletron Systems.
  • Page 39 Installation TDRMIM-22A RX– TX– TCU port RJ45 jack TDRMIM-42A STP lobe cable TX– RX– RX– TX– Shield TCU port RJ45 plug RJ45 jack Figure 3-2. Token Ring Lobe Cable Wiring Schematic Attaching Twisted Pair Cabling at the Module To attach station cable to the TDRMIM: Insert the male RJ45 connector from one end of the station’s lobe cable...

  • Page 40: Connecting Ring In/Ring Out Cables

    3.2.6 Connecting Ring In/Ring Out Cables The fiber cable ends should be color-coded so that the colors are switched at either end of the cable (as in Figure 3-3) ensuring that if the user keeps the color/port connection consistent, the cables will be properly crossed over (as in Figure 3-4).
  • Page 41 Installation and test the installation thoroughly to ensure that all stations are able to receive and that data is being relayed without error. Verify also that the networking software is configured properly to match the installed network. Page 3-8...

  • Page 42: Chapter 4 Testing And Troubleshooting

    Testing and Troubleshooting This section contains procedures to verify that the connections between the TDRMIM and the Token Ring stations are functioning properly. A description of the LANVIEW LED system is also provided. 4.1 Installation Checkout Perform the following check to confirm proper installation of the TDRMIM: Confirm that power settings for all connected Token Ring stations and the MMAC match the AC power source (120 Vac or 240 Vac) and are...

  • Page 43: Lanview Led Signals

    LANVIEW LED Signals When these checks have been successfully cleared, the TDRMIM is ready for normal operation. If further problems are encountered, contact Cabletron Systems Technical Support. 4.2 LANVIEW LED Signals LANVIEW is Cabletron Systems’ built-in visual diagnostic and status monitoring system.
  • Page 44 ERR—Error This LED should be off during normal operations. If the LED is RED, there is a hardware failure within the module. If this occurs, contact Cabletron Systems Technical Support. BYP—Bypass If the LED is off, at least one port is inserted into the FNB rings.
  • Page 45 LANVIEW LED Signals 16MB—Ring Speed YELLOW indicates that the ring speed is set to 16 16 MB Mbps. OFF indicates that the ring speed is set to 4 Mbps. 16 MB IN USE—Ring In Use These LEDs indicate the status of network communications on the associated ring.
  • Page 46 During normal operation, the LEDs for TCU ports operate as follows: GREEN indicates that the TCU port is inserted into its assigned ring. BLINKING GREEN indicates that a Token Ring station is phantom linked to the port, but the TCU port is disabled by management command.
  • Page 47 LANVIEW LED Signals GREEN indicates that the associated RI or RO port is linked. Page 4-6...

  • Page 48: Appendix A Introduction To Port Switching

    APPENDIX A Introduction to Port Switching A.1 Introduction This appendix introduces the concepts of port switching, port assignment, and the four-ring Flexible Network Bus (FNB). These concepts are fundamental to the basic functionality of a growing number of Cabletron Systems Token Ring products. A.2 The Flexible Network Bus (FNB) The FNB is a data bus that spans the entire width of the backplane of the Multi Media Access Center (MMAC).

  • Page 49: With Port Switching

    With Port Switching FNB ring segment B FNB ring wrapped at TRMMIM’s right FNB interface. Figure A-1. FNB Segmentation Produces Two Isolated FNB Rings Management of Segmented FNB Rings When the FNB is segmented, as shown in Figure A-1., the modules on one segment are isolated from modules on another FNB segment, and management interfaces with one ring are isolated from other FNB segments as well.
  • Page 50 Port-Switching MIMs Figure A-2. Four Vertically Stacked FNB Rings Port-switching MIMs can assign ports on an individual basis to connect to any of four FNB rings, thereby providing multiple users with access to multiple rings through a single MIM. Refer to Figure A-3. for a comparative illustration of the connectivity afforded by each kind of MIM.
  • Page 51 With Port Switching Segmented FNB ring 1 Figure A-3. Mixed MIMs (In this example, only FNB ring 1 and the Management For a management module to fully manage a ring, it requires a network-monitoring interface with the ring. Whereas single-ring management modules have only one network interface, port-assigning management modules provide for multiple ring interfaces, making it possible for a single management module to fully manage any or all of the...

  • Page 52: Configuration Specifications

    Port assignments made by the Management TRXMIM-44A Module are executed internally by the multi-ring B Y P MGMT (port-switching or cluster-switching) MIM. RING 1 16Mb IN USE RING 2 16Mb IN USE RING 3 16Mb IN USE RING 4 16Mb IN USE A U X 1 1 6 M b IN USE...
  • Page 53 Configuration Specifications should be grouped together in the right-most slots of the MMAC as shown in Figure A-3. Single-ring MIMs still have the ability to segment FNB ring 1 (as shown in Figure A-3.). They still view the FNB as having only one ring and are not affected by the utilization of FNB rings 2, 3, or 4 by other MIMs in the MMAC.

This manual is also suitable for:

Tdrmim-22a

Table of Contents