Cabletron Systems TRMIM-10R Manuale utente

TRMIM-10R

TOKEN RING

MEDIA INTERFACE MODULE

INSTALLATION GUIDE

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

The Complete Networking Solution

NOTICE

Cabletron Systems reserves the right to make changes in specifica-

tions 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 MAN-

UAL OR THE INFORMATION CONTAINED IN IT, EVEN IF

CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR

SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAM-

AGES.

Copyright November 1990 by:

Cabletron Systems, Inc.

P.O. Box 5005, Rochester, NH 03867-5005

Printed in the United States of America

Order Number: 9030258 November 90

LANVIEW, Remote LANVIEW Windows,Spectrum,

TRMIM-10R, TRRMIM-16, TRMIM-12, MMAC, and FNB are

trademarks of Cabletron Systems Inc.

IBM is a registered trademark of International Business Machines

Corporation.

NOTICE

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.

WARNING: This equipment uses and generates and can radiate

radio frequency energy and if not installed properly and used in

accordance with the instruction manual, may cause interference to

radio communications. It has been tested and found to comply with

the limits for a Class A digital device pursuant to Part 15 of FCC

Rules, which are designed to provide reasonable protection against

such interference in a commercial environment. Operation of this

equipment in a residential area is likely to cause interference in

which case the user at his own expense will be required to take

whatever steps may be necessary 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 MMAC with respect to the receiving antenna.

• Move the MMAC away from the receiver.

• Plug the MMAC into a different outlet so that the MMAC 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:

“How to Identify and Resolve Radio TV Interference Problems”

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

Washington D.C. 20402 - Stock No. 004-000-00345-4

FCC NOTICE

CONTENTS

CHAPTER PAGE

CHAPTER 1 INTRODUCTION

1.1 Using This Manual ......................................................................1-1

1.2 The TRMIM-10R ..........................................................................1-2

1.3 Related Manuals ..........................................................................1-4

1.4 Recommended Reading................................................................1-4

1.5 Getting Help.................................................................................1-4

CHAPTER 2 INSTALLATION REQUIREMENTS/

SPECIFICATIONS

2.1 Network Requirements................................................................2-1

2.1.1 Cable Types ........................................................................2-1

2.1.2 Cable Lengths.....................................................................2-2

2.1.3 Attenuation.........................................................................2-3

2.1.4 Impedance...........................................................................2-4

2.1.5 Crosstalk.............................................................................2-4

2.1.6 Maximum Number of Stations ..........................................2-4

2.1.7 Noise ...................................................................................2-5

2.1.8 Temperature .......................................................................2-5

2.2 Operating Specifications..............................................................2-5

2.2.1 Ring Speed..........................................................................2-5

2.2.2 Connector Types .................................................................2-5

2.2.3 Ring Sequence ....................................................................2-7

2.2.4 LANVIEW LEDs ................................................................2-7

CHAPTER 3 INSTALLING THE TRMIM-10R

3.1 Unpacking the TRMIM-10R ........................................................3-1

3.2 Installing the TRMIM-10R into the MMAC...............................3-1

3.3 Attaching Cables to the TRMIM-10R .........................................3-4

3.3.1 Connecting Lobe Cabling ...................................................3-4

3.3.2 Connecting Trunk Cabling ................................................3-6

3.4 Finishing the Installation............................................................3-7

iii

CONTENTS

CONTENTS (Cont.)

CHAPTER 4 TESTING AND TROUBLESHOOTING

4.1 Installation Check-Out ................................................................4-1

4.2 Using LANVIEW .........................................................................4-2

APPENDIX A BASIC TOKEN RING NETWORKS

A.1 Basic Token Ring Operation .......................................................A-1

A.2 Design Considerations.................................................................A-7

APPENDIX B APPLICATIONS

B.1 Adding to an Existing Token Ring Network.............................B-1

B.2 Separate Token Ring Networks in One MMAC .......................B-2

B.3 Token Ring Networks Bridged Together ..................................B-3

B.4 MMAC with Ethernet and Token Ring Simultaneously..........B-3

APPENDIX C CALCULATING RING LENGTH

C.1 Rules for Calculating Cable Lengths ........................................C-1

C.2 Single Wiring Closet Networks .................................................C-2

C.3 Multiple Wiring Closet Networks .............................................C-9

C.4 Calculating Mixed Cable Types ...............................................C-15

INTRODUCTION

Page 1-1

CHAPTER 1

INTRODUCTION

Welcome to the TRMIM-10R Token Ring Passive Concentrator

Media Interface ModuleInstallation Guide. This guide is

designed to serve as a reference for the installation and

troubleshooting of Cabletron Systems' TRMIM-10R.

The TRMIM-10R is a token ring network concentrator used in

conjunction with Cabletron's Multi Media Access Center (MMAC).

The TRMIM-10R provides ten trunk unit coupling ports and passive

Ring-In and Ring-Out ports. The Ring-In/Ring-Out ports and each of

the TRMIM-10R's ten trunk coupling unit ports support IBMTypes

1, 2, 6, and 9 shielded twisted pair cabling. The TRMIM-10R is IEEE

802.5 compliant, and compatible with IBM products.

Prior to installing and operating the TRMIM-10R, read through this

manual completely to familiarize yourself with its content and to gain

an understanding of the features of the TRMIM-10R. A general

working knowledge of token ring (IEEE 802.5) networks will be

helpful when installing the TRMIM-10R.

1.1 USING THIS MANUAL

Chapter 1, Introduction, covers using this document, briefly

describes features of the TRMIM-10R and token ring, and concludes

with a list of related manuals.

Chapter 2, Installation Requirements/Specifications, lists

network requirements that must be met before you install the

TRMIM-10R and specifications for the TRMIM-10R.

Chapter 3, Installing the TRMIM-10R, describes installing the

TRMIM-10R into the MMAC, attaching station cabling and

connecting the TRMIM-10R to a token ring network.

Chapter 4, Testing and Troubleshooting, includes a description of

LANVIEW, Cabletron Systems' built-in visual diagnostic and

status monitoring system and procedures for verifying the proper

installation of the TRMIM-10R.

INTRODUCTION

Page 1-2

Appendix A, Basic Token Ring Networks, covers basic operation

and concepts related to the design of token ring networks.

Appendix B, Applications, presents a variety of network

configurations, showing practical applications for several Cabletron

Systems' token ring products.

Appendix C, Calculating Ring Length, describes methods for

calculating various ring cable lengths for passive devices in a token

ring network.

1.2 THE TRMIM-10R

This section outlines some of the basic features of the TRMIM-10R.

The TRMIM-10R, shown in Figure 1-1, is a Media Interface Module

(MIM) that can be installed into a Cabletron Systems' MMAC (Multi

Media Access Center). The TRMIM-10R functions as a ten port

concentrator module in a token ring network providing passive Ring-

In and Ring-Out ports and ten trunk coupling ports.

Twelve DB-9 connectors on the front panel of the TRMIM-10R

provide one Ring-In port, one Ring-Out port for connecting the

TRMIM-10R into a token ring network and ten trunk coupling ports

for attaching ten stations.

The TRMIM-10R supports lobe lengths up to 200 meters at 4 Mbit/sec

and 100 meters at 16 Mbit/sec using IBM Type 1 or Type 2 shielded

twisted pair cable. The supported types and lengths of cables are

listed in Chapter 2, Installation Requirements/Specifications.

The Ring-In/Ring-Out ports provide passive trunk connections using

IBM Type 1 or Type 2 shielded twisted pair cable. Trunk cable

lengths must consider Adjusted Ring Length (ARL). Refer to

Appendix C, Calculating Ring Length, to determine trunk cable

length.

The Flexible Network Bus (FNB) provides an internal trunk

connection between multiple Cabletron Systems' Token Ring products

operating at the same ring speed and installed in consecutive slots

within the same MMAC. The FNB is an active interface that

regenerates and retimes ring signals between boards on the FNB.

INTRODUCTION

Page 1-3

Several LEDs are located on the front panel of the TRMIM-10R.

These LEDs indicate the ring speed, the detection of a hardware error

in the TRMIM-10R, and the status of TRMIM-10R ports. These

LEDs are a useful tool for quickly diagnosing physical layer problems.

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

monitor the TRMIM-10R, including Cabletron Systems Local

Management, Cabletron Systems Remote LANVIEW Windows, and

Cabletron Systems Spectrum.

Figure 1-1. TRMIM-10R Token Ring Concentrator

TOKEN RING

TRMIM-10R

INTRODUCTION

Page 1-4

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 in this document.

Cabletron Systems' Multi-Media Access Center Overview and

Set Up Guide.

Cabletron Systems' TRMIM-12 Token Ring Media Interface

Module Installation Guide.

Cabletron Systems' TRRMIM-16 Token Ring Repeater 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

LAN Troubleshooting Handbook, Mark Miller (1989, M&T

Publishing, Inc.)

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, please contact Cabletron Systems'

Technical Support at:

Cabletron Systems

35 Industrial Way

P. O. Box 5005

Rochester, NH 03867-5005

Phone: (603) 332-9400

REQUIREMENTS/SPECIFICATIONS

Page 2-1

CHAPTER 2

INSTALLATION REQUIREMENTS/

SPECIFICATIONS

Before you attempt to install Cabletron Systems' token ring products,

review the installation requirements and operating specifications

outlined in this chapter. The conditions, guidelines and requirements

described in this chapter must be met to obtain satisfactory

performance from this equipment. The reliability of the network is

determined by the quality of the connections, the length of the cables

and other conditions of the installation.

2.1 NETWORK REQUIREMENTS

The following subsections summarize the network requirements to

operate this equipment.

2.1.1 Cable Types

The TRMIM-10R supports IBM shielded twisted pair cable Types 1,

2, 6, and 9 for Lobe and Trunk cabling. Table 2-1 lists all of the IBM

cable types for reference, but the TRMIM-10R supports Types 1, 2, 6,

and 9 only.

Table 2-1. IBM Cable Types

Type 1 Two shielded twisted pairs (STP) of 22 AWG solid wire

for data. Used for the longest cable runs within the

walls of buildings.

Type 2 Similar to Type 1 data cable, but having four additional

unshielded twisted pairs of 24 AWG solid wire. These

are carried outside of the shield casing and are typically

used for voice communication. Frequently used to wire

cable runs within the walls of buildings.

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