Cabletron Systems TRMIM-22 Manuale utente

CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-0505

TRMIM-22/24/42/44

TOKEN RING

MEDIA INTERFACE MODULES

INSTALLATION GUIDE

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 INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL

DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO

LOST PROFITS) ARISING OUT OF OR RELATED TO THIS

MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF

CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR

SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH

DAMAGES.

Copyright October 1992 by:

Cabletron Systems, Inc.

P.O. Box 5005

Rochester, NH 03867-0505

Printed in the United States of America

Order Number: 9030257-02 October 92

FNB, Multi Media Access Center, Remote LANVIEW and

LANVIEW are registered trademarks of Cabletron Systems, Inc.

TRRMIM-A,TRRMIM-2A,TRRMIM-4A,TRMIM-22, TRMIM-24,

TRMIM-42, TRMIM-44, Flexible Network Bus and MMAC are

trademarks of Cabletron Systems, Inc.

IBM is a registered trademark of International Business Machines

Corporation.

FCC NOTICE

This device complies with Part 15 of 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 re-

ceived, 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 FCC

Rules. These limits are designed to provide reasonable protection

against harmful interference when the equipment is operated in a

commercial environment. This equipment uses, generates, and can

radiate radio frequency energy and if not installed in accordance with

the operator’s manual, may cause harmful interference to radio

communications. Operation of this equipment in a residential area is

likely to cause interference in which case the user will be required at

his own expense to correct the interference.

If this equipment does cause interference to radio or television, which

can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the

following measures:

• Re-orient the receiving antenna.

• Relocate the equipment with respect to the receiving antenna.

• Move the equipment away from the receiver.

• Plug the equipment into a different outlet so that the equipment

and the receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced

radio/ television technician for additional suggestions. The user may

find the following booklet prepared by the Federal Communication

Commission helpful:

“Interference Handbook”

This booklet is available from the U.S. Government Printing Office,

Washington D.C. 20402 - Stock No. 004-000-00482-5.

Page 1-1

INTRODUCTION

CHAPTER 1

INTRODUCTION

Welcome to the Token Ring Media Interface Modules

Installation Guide. This manual serves as a reference for installing

and troubleshooting Cabletron Systems TRMIM-22, TRMIM-24,

TRMIM-42, and TRMIM-44.

The TRMIM-22, TRMIM-24, TRMIM-42, and TRMIM-44 comprise a

family of Token Ring Concentrator modules. The TRMIM-22 and

TRMIM-24 provide 12 and 24 trunk coupling unit (TCU) ports,

respectively, that support voice grade unshielded twisted pair (UTP)

cabling. The TRMIM-42 and TRMIM-44 have 12 and 24 TCU ports,

respectively, supporting IBMtype 1, 2, 6, and 9 shielded twisted pair

(STP) cabling.

Both UTP concentrator modules and both STP concentrator modules

are equipped with RJ-45 modular connectors. The STP concentrator

module RJ-45 connectors provide for connection of the cabling shield.

All four concentrator modules are designed for installation in any

Cabletron Systems Multi Media Access Center(MMAC) equipped

with a Flexible Network Bus(FNB). All four concentrator

modules are IEEE 802.5 compliant and compatible with IBM

products.

NOTE: The term Concentrator Module is used throughout this

manual when describing features and functions that are common to

the TRMIM-22, TRMIM-24, TRMIM-42, and TRMIM-44. The terms

TRMIM-22, TRMIM-24, TRMIM-42, and TRMIM-44 are used when

it is necessary to describe features that are unique to any device.

1.1 USING THIS MANUAL

Prior to installing and operating your concentrator module, read

through this manual completely to familiarize yourself with its

contents and to gain an understanding of the features of the

concentrator module.

A general working knowledge of Token Ring (IEEE 802.5) networks

will be helpful when installing your concentrator module.

Page 1-2

INTRODUCTION

Chapter 1, Introduction, describes how to use this document,

provides an overview of the features and capabilities of each

concentrator module, and concludes with a list of related manuals.

Chapter 2, Installation Requirements/Specifications, lists the

network requirements that must be met before you begin installing

your concentrator module. Detailed specifications for each of the

concentrator modules is also provided.

Chapter 3, Installing the Concentrator Module, contains

instructions for installing a concentrator module into the MMAC, and

attaching token ring station cabling.

Chapter 4, Testing and Troubleshooting, describes checks that

you can perform if you encounter problems after installing a

concentrator module. Instructions for using LANVIEW, Cabletron

Systems’ built-in visual diagnostic and status monitoring system, are

also included.

1.2 THE CONCENTRATOR MODULES

The TRMIM-22, TRMIM-24, TRMIM-42, and TRMIM-44, shown in

Figure 1-1, can be installed as a free standing token ring network or

to provide UTP or STP connectivity to an existing token ring network.

All four concentrator modules are designed for installation into a

Cabletron Systems MMAC. Since they do not have externally

accessible Ring-In and Ring-Out ports, they are considered

concentrator modules. (A concentrator in token ring applications is

defined as a device with multiple TCU ports bounded by externally

accessible Ring-In and Ring-Out ports.)

All four concentrator modules are designed for installation into a

Cabletron Systems MMAC, where they can be used to create an

independent 12 or 24 port ring or to expand an existing token ring

network. When any concentrator module is used within an MMAC,

the concentrator module is connected through the MMAC backplane

via the Flexible Network Bus (FNB) to other token ring MIMs,

repeaters, bridges, or management modules.

The MIMs automatically attach to each other through the FNB when

positioned in adjacent slots and configured with identical ring speed

settings.

Page 1-3

INTRODUCTION

Figure 1-1. The TRMIM-22, TRMIM-24, TRMIM-42,

and TRMIM-44 Token Ring Concentrator Modules

Features of the concentrator module include:

Number of Connections

• TRMIM-22 12 - Unshielded RJ-45 ports

• TRMIM-42 12 - Shielded RJ-45 ports

• TRMIM-24 24 - Unshielded RJ-45 ports

• TRMIM-44 24 - Shielded RJ-45 ports

Multiple concentrator modules can be installed into an MMAC to

increase the number of UTP/STP ports available on a token ring

network.

TRMIM-22

UTP

TOKEN RING

TRMIM-24

UTP

TOKEN RING

TRMIM-42

STP

TOKEN RING

TRMIM-44

STP

TOKEN RING

Page 1-4

INTRODUCTION

Multiple Concentrator Modules

Several concentrator modules can be installed into a single MMAC

and configured as independent rings or linked together into a single

ring network. Configuration guidelines can be found in Chapter 3,

Installing the Concentrator Module.

Multiple MMACs in a Ring Network

Several MMACs can be connected into the same ring network by

installing token ring concentrators (TRMIM-10R/20R with externally

accessible Ring-In/Ring-Out ports) or token ring repeaters

(TRRMIM-A/2A/4A). The choice between using concentrators or

repeaters depends on specific network configurations. Refer to

Cabletron Systems TRMIM-10R/20R Installation Guideor

TRRMIM-A/2A/4A Installation Guide for more information on the

use of these products or contact Cabletron Systems Technical

Support.

A variety of network management tools can be used to control and

monitor these repeaters, including Cabletron Systems Local

Management, Remote LANVIEW/Windows, and SPECTRUM.

LANVIEW LEDs

Several LEDs, on the front panel of the concentrator module, are used

to indicate the ring speed, a bypass condition, status, and

management statistics for each of the TCU ports. LANVIEW is an

effective tool to help you quickly diagnose your physical layer network

problems.

Page 1-5

INTRODUCTION

1.3 RELATED MANUALS

The manuals listed below should be used to supplement the

procedures and other technical data provided in this manual. The

procedures in them will be referenced, where appropriate, but will not

be repeated.

Cabletron Systems Multi Media Access Center Overview and Set

Up Guide

Cabletron Systems TRRMIM-A, TRRMIM-2A, & TRRMIM-4A

Token Ring Repeaters Installation Guide

Cabletron Systems TRMIM-10R STP Token Ring Concentrator

Installation Guide

Cabletron Systems TRMIM-12 Token Ring Media Interface

Module Installation Guide

1.4 RECOMMENDED READING

The following publications are recommended if more information is

required on implementing a token ring network.

Local Area Networks, Token Ring Access Method, IEEE

Standard 802.5 (1989)

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)

Page 1-6

INTRODUCTION

1.5 GETTING HELP

If you need additional support related to the Cabletron Systems

Token Ring products, or if you have any questions, comments or

suggestions related to this manual, contact Cabletron Systems

Technical Support at:

Cabletron Systems

P. O. Box 5005

Rochester, NH 03867-0505

Phone: (603) 332-9400

REQUIREMENTS/SPECIFICATIONS

Page 2-1

CHAPTER 2

INSTALLATION

REQUIREMENTS/SPECIFICATIONS

Before you attempt to install your concentrator module, review the

installation requirements and operating specifications that are

outlined in this chapter.

Your network installation must meet the conditions, guidelines,

specifications, and requirements included in this chapter to obtain

satisfactory performance from this equipment. Failure to follow these

guidelines could produce poor network performance.

2.1 NETWORK REQUIREMENTS

Take care in planning and preparing the cabling and connections for

your network. The quality of the connections, the length of cables

and other conditions of the installation are critical factors in

determining the reliability of your network. Work area wall plates/

outlets used for your token ring network should be clearly labeled as

token ring network lobe connections.

The following sections describe network requirements for this

equipment.

2.1.1 Cable Specifications

The media used for station (lobe) cabling depends on your specific

concentrator module:

• The TRMIM-22 and TRMIM-24 support voice grade UTP cable, as

described in EIA Standard Proposal No. 1907-A, and IBM Type 3

UTP cabling.

• The TRMIM-42 and TRMIM-44 support IBM shielded twisted

pair (STP) cable Types 1, 2, 6, and 9 at their trunk coupling unit

(TCU) ports.

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