Cabletron Systems IRM Bedienungsanleitung

INTELLIGENT REPEATER MODULE

(IRM)

INSTALLATION GUIDE

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

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 ORRELATED 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.

Cabletron Systems, Inc.

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

Printed in the United States of America

Order number: 9030033-03 July 91

LANVIEW

is a registered trademark of Cabletron Systems, Inc.

SPECTRUM, Remote LANVIEW/Windows, IRM, IRM/LM, MMAC-8, MMAC-8FNB

MMAC-5FNB, MMAC-3,

MMAC-3FNB, PSM, PSM-R, MMAC-5PSM, THN-MIM

, and

LAN-MD

are trademarks of Cabletron Systems, Inc.

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

received, 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 antenna with respect to the MMAC.

• Move the MMAC away from the antenna.

• 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 may33 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.

iii

CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL........................................................................1-1

1.2 GETTING HELP ....................................................................................1-2

1.3 THE INTELLIGENT REPEATER MODULE (IRM) ...........................1-2

1.4 REPEATER FUNCTIONALITY ...........................................................1-4

1.5 NETWORK MANAGEMENT CAPABILITIES...................................1-4

1.6 RELATED MANUALS..........................................................................1-5

CHAPTER 2 NETWORK REQUIREMENTS/SPECIFICATIONS

2.1 NETWORK REQUIREMENTS.............................................................2-1

2.1.1 AUI Port Requirements....................................................2-1

2.1.2 Thin-Net Requirements....................................................2-1

2.2 OPERATING SPECIFICATION ...........................................................2-2

CHAPTER 3 INSTALLING THE IRM

3.1 UNPACKING THE IRM........................................................................3-1

3.2 SETTING THE IRM JUMPERS ..........................................................3-1

3.2.1 Setting the Battery Enable/Disable Jumper .....................3-1

3.2.2 Setting the Default Setting Jumper (JP4).........................3-3

3.2.3 Setting the THN-MIM Jumper (JP2)...............................3-3

3.3 INSTALLING THE IRM........................................................................3-4

3.4 CONNECTING THE IRM TO THE NETWORK .................................3-5

3.4.1 Connecting to the Network Via the AUI Port..................3-5

3.4.2 Connecting to the Network Via the BNC Port.................3-8

CHAPTER 4 TESTING AND LANVIEW

4.1 INSTALLATION CHECK-OUT ..........................................................4-1

4.2 USING LANVIEW................................................................................4-2

4.3 USING THE RESET SWITCH.............................................................4-3

CONTENTS

1-1

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

Intelligent Repeater Module

(IRM™) Installation Guide

. We have designed this manual to serve as a

simple installation and reference guide for the IRM, and to explain the

capabilities and special features of the IRM. The IRM provides an IEEE

802.3 Repeater with network management capabilities for use in a

Cabletron Systems Multi Media Access Center (MMAC

™

You should read through this manual to gain a full understanding of the

IRM and its capabilities.

1.1 USINGTHIS MANUAL

Chapter 1,

Introduction

, discusses the capabilities of Cabletron Systems'

IRM. The chapter includes an explanation of the IRM's repeater

functionality and a discussion of the IRM's Management capabilities. The

chapter concludes with a list of related manuals.

Chapter 2,

Installation Requirements/Speciﬁcations

, contains a list of

network requirements that must be met before you install the IRM. The

speciﬁcations for the IRM are also included in this chapter.

Chapter 3,

Installing the IRM

, contains instructions for installing the

IRM into the MMAC. The chapter also includes instructions for

connecting the IRM to the network.

Chapter 4,

Testing and Troubleshooting

, provides procedures for testing

and troubleshooting the installation of the IRM. Instructions for using

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

monitoring system, are also included.

We assume that you have a general working knowledge of Ethernet or

IEEE 802.3 type data communications networks and their physical layer

components.

INTRODUCTION

1-2

1.2 GETTING HELP

If you need additional support related to the Cabletron Systems IRM, or if

you have any questions, comments or suggestions related to this manual,

feel free to contact Cabletron Systems' Technical Support at:

Cabletron Systems, Inc.

35 Industrial Way, P.O. Box 5005

Rochester, NH 03867-5005

Phone: (603) 332-9400

1.3 THE INTELLIGENT REPEATER MODULE (IRM)

The Cabletron Systems Intelligent Repeater Module (IRM) (Fig. 1-1) is

the heart of the Cabletron Systems Multi Media Access Center. The IRM

incorporates an IEEE 803.3 repeater to allow maximum data paths

between devices connected MMAC.

The IRM can be controlled and monitored by a variety of Cabletron

System Network Management packages. These include Cabletron

Systems Remote LANVIEW/Windows™ and Cabletron Systems

SPECTRUM™. Additionally, the IRM can be controlled and monitored

by IRM/LM™ - Local Management for the IRM via a terminal connected

locally.

The IRM incorporates three IEEE 802.3 compliant ports that connect to

external network segments: twoAUI ports and one BNC port. The AUI

ports allow you to connect the module to a variety of Ethernet

transmission media including twisted pair, ﬁber optic, and/or thick or thin

Ethernet coaxial cable via an external transceiver. The BNC port can be

used to connect a Thin-Net Segment to the IRM.

A standard 9 pin RS232 console port that allows you to access IRM/LM

and a Reset Switch to initialize the IRM's processor are also built into the

IRM's front panel.

The IRM also incorporates Cabletron Systems' LANVIEW Status

Monitoring and Diagnostics Systems. Should a problem arise, such as a

power failure or a cable fault, LANVIEW's LEDs will help you to

diagnose it. LANVIEW LEDs on the IRM advise you whether the module

is receiving power, whether an error has been detected with the IRM,

whether the IRM is receiving packets from any segment

INTRODUCTION

1-3

Figure 1-1 Intelligent Repeater Module (IRM)

IRM

FAIL CLN

RESET

Reset Switch

15 Pin DB-15

AUI Ports

9 Pin RS232 Port

BNC Port

LANVIEW LEDs

INTRODUCTION

1-4

connected to the MMAC, or whether the module is detecting a collision

from the network.

1.4 REPEATER FUNCTIONALITY

The IRM's IEEE 802.3 compliant repeater provides the MMAC with the

ability to achieve maximum data paths on all Ethernet transmission

media, including 10BASE-T Twisted Pair, Fiber Optic, and Thick or Thin

Ethernet type cabling. To attain these maximum data paths, the IRM

retimes data packets and regenerates the preamble of each data packet that

enters the MMAC.

In addition, the IRM's repeater functionality assures that any problem

segments connected to any port on the MMAC will not affect any other

segments connected to the MMAC. If 33 consecutive collisions are

detected on any segment, or if a collision detector is on for more than 2.4

ms, the IRM will automatically partition that segment from the MMAC.

The segment will automatically be reconnected to the MMAC when a

packet is transmitted onto the segment without causing a collision.

1.5 NETWORK MANAGEMENT CAPABILITIES

The Cabletron Systems IRM can be controlled and managed by a variety

of network management packages. These include:

• Cabletron Systems' SPECTRUM

• Cabletron Systems' Remote LANVIEW/Windows

• Cabletron Systems' IRM/LM (Local Management)

The IRM's network management capabilities provide the necessary

management tools for the IRM to operate at its full capacity.Your ability

to set up parameters within these network management capabilities

ensures optimal performance of the IRM, and, hence, the network.

SNMP compliant management capabilities are also available for the IRM

monitoring by Third Party SNMP compliant Network Management

Packages.

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