Cabletron Systems MRXI-22 Manuale utente

MRXI-22 AND MRXI-24

10BASE-T HUB

USER’S 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 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 FORANY 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.

Cabletron Systems Inc.

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

Printed in the United States of America

Order Number: 9030637-01 May 93

Remote LANVIEW

LANVIEW

, and

SPECTRUM

are registered trademarks of Cabletron

Systems, Inc.

MRXI

and

MMAC

are trademarks of Cabletron Systems, Inc.

IBM

is a registered trademark of International Business Machines Corporation.

CompuServe

is a registered trademark of CompuServe.

DEC

VT200

, and

VT300

are trademarks of Digital Equipment Corporation.

Ethernet

is a trademark of Xerox Corporation.

Hayes

is a trademark of Hayes Microcomputer Products Inc.

Windows

is a registered trademark of Microsoft Corporation

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. 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

to correct the interference at his own expense.

WARNING

: Changes or modifications made to this device which are not expressly approved by the

party responsible for compliance could void the user’s authority to operate the equipment.

DOC NOTICE

This digital apparatus does not exceed the ClassA limits for radio noise emissions from digital

apparatus set out in the Radio Interference Regulations of the Canadian Department of

Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables

aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique

édicté par le ministère des Communications du Canada.

iii

CONTENTS

CHAPTER 1 INTRODUCTION

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

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

1.3 THE 10BASE-T MRXI .................................................................1-2

1.4 LANVIEW LEDs AND LCD DISPLAY..........................................1-4

1.5 LOCAL MANAGEMENT..............................................................1-4

1.6 NETWORK MANAGEMENT CAPABILITIES..............................1-4

1.7 RELATED MANUALS..................................................................1-5

CHAPTER 2 INSTALLATION

REQUIREMENTS/SPECIFICATIONS

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

2.2 SELECTING A LOCATION FOR THE MRXI...............................2-1

2.3 NETWORK GUIDELINES ...........................................................2-2

2.3.1 10BASE-T Twisted Pair Network Requirements ............2-2

2.3.2 Multi Mode Fiber Optic Network Requirements..............2-3

2.3.3 Single Mode Fiber Optic Network Requirements............2-4

2.3.4 Thin-Net Network Requirements ....................................2-5

2.3.5 Transceiver Requirements..............................................2-6

2.3.6 AUI Cable Requirements................................................2-6

2.4 OPERATING SPECIFICATIONS ................................................2-7

CHAPTER 3 INSTALLATION

3.1 UNPACKING THE MRXI.............................................................3-1

3.2 ATTACHING THE STRAIN RELIEF BRACKET..........................3-1

3.3 INSTALLING THE MRXI .............................................................3-2

3.3.1 Rack Mounting the MRXI................................................3-2

3.3.2 Wall Mounting the MRXI.................................................3-3

3.3.3 Free-Standing Installation...............................................3-5

3.4 CONNECTING THE MRXI TO THE POWER SOURCE.............3-6

3.5 CONNECTING THE MRXI TO THE NETWORK.........................3-6

3.5.1 Connecting the Network Port Cabling.............................3-7

3.5.2 Connecting a Twisted Pair Segment to an EPIM-T ........3-8

3.5.3 Connecting an AUI Cable to an EPIM-X.......................3-10

3.5.4 Connecting a Fiber Optic Link Segment to an

EPIM-F1, EPIM-F2, or EPIM-F3...................................3-11

3.5.5 Connecting a Thin-Net Segment to an EPIM-C............3-13

3.5.6 Connecting an AUI Cable to an EPIM-A.......................3-14

3.6 FINISHING THE INSTALLATION..............................................3-15

CONTENTS

CHAPTER 4 TESTING ANDTROUBLESHOOTING

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

4.2 TESTING SEGMENTS ATTACHED TO THE MRXI....................4-2

4.3 USING LANVIEW ........................................................................4-5

4.4 THE LCD DISPLAY .....................................................................4-6

CHAPTER 5 LOCAL MANAGEMENT

5.1 TERMINAL CONFIGURATION....................................................5-1

5.1.1 Console Cable Configuration ..........................................5-3

5.1.2 Modem Cable Configuration............................................5-5

5.1.3 Cable Configuration for UPS...........................................5-5

5.2 ACCESSING LOCAL MANAGEMENT ........................................5-6

5.3 COMMUNITY NAME TABLE.......................................................5-7

5.3.1 Accessing the Community Name Table Screen..............5-8

5.3.2 Community Name Table Screen Fields...........................5-8

5.3.3 Editing the Community Name Table Screen...................5-9

5.4 CONFIGURING THE MRXI .......................................................5-10

5.4.1 Accessing the Configuration Screen.............................5-10

5.4.2 Configuration Screen Fields..........................................5-11

5.4.3 Setting the IP Address Table and SubNET Mask Field.5-12

5.4.4 Setting the Default Gateway..........................................5-13

5.4.5 Setting the UPS Option.................................................5-13

5.4.6 Using the Port LOCK Override Option ..........................5-14

5.4.7 Using the Port ENABLE Override..................................5-14

5.5 SETTING THE TRAP TABLE ....................................................5-15

5.5.1 MRXI Trap Table Screen...............................................5-15

5.5.2 Trap Table Screen Fields..............................................5-16

5.5.3 Configuring the Trap Table............................................5-16

5.6 SNMP TOOLS ...........................................................................5-17

5.6.1 Accessing the SNMP Tools Screen ..............................5-18

5.6.2 SNMP Tools Screen Fields...........................................5-18

5.6.3 Using SNMP Tools........................................................5-19

5.7 COMMAND LINE INTERFACE (CLI).........................................5-22

1-1

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

MRXI-22 and MRXI-24 10BASE-T

HUB User’s Guide

. This manual provides installation instructions and

presents reference information for the MRXI-22 and MRXI-24

10BASE-T Hubs.

Note

:Throughout this manual the term MRXI is used to cover both the

MRXI-22 and MRXI-24 unless otherwise speciﬁed.

1.1 USINGTHIS MANUAL

Read through this manual completely to familiarize yourself with its

content and to gain an understanding of the features and capabilities of

the MRXI. A general working knowledge of Ethernet and IEEE 802.3

type data communications networks and their physical layer components

will be helpful when installing the MRXI.

Chapter 1,

Introduction

, outlines the contents of this manual, brieﬂy

describes features of the MRXI, and concludes with a list of related

manuals.

Chapter 2,

Requirements/Speciﬁcations

, describes installation

requirements, network guidelines, and MRXI operating speciﬁcations.

Chapter 3,

Installation

, contains instructions for installing your MRXI

and connecting it to the network using the various media types.

Chapter 4,

Testing and Troubleshooting,

contains procedures for testing

the MRXI after installation, a description of the LANVIEW ™ LEDs, and

explains the use of the front panel LCD display.

Chapter 5,

Local Management,

describes how to access Local

Management. It also describes each of the Local Management screens and

the available commands.

INTRODUCTION

1-2

1.2 GETTING HELP

If you need additional support related to the MRXI-22 or MRXI-24, or if

you have any questions, comments, or suggestions concerning this

manual, feel free to contact Cabletron Systems Technical Support:

By phone ..........................(603) 332-9400

Monday-Friday; 8am - 8pm EST

By CompuServe

.............GO CTRON from any ! prompt

By Internet mail ...............[email protected]

1.3 THE 10BASE-T MRXI

The MRXI-22 and MRXI-24 are functionally identical. The MRXI-22

provides twelve RJ-45 connectors and the MRXI-24 provides twenty-four

RJ-45 connectors for network ports. Additional network connections are

made through the use of front panel EPIM modules (one module for the

MRXI-22, two modules for the MRXI-24). A variety of EPIMs are

available permitting the expansion of an Ethernet/802.3 network via:

• Unshielded Twisted Pair Cable from the 10BASE-T Twisted Pair

Interface Module (EPIM-T).

• Fiber Optic Cable, with SMA or ST connectors, from the Fiber Optic

Interface Modules (EPIM-F1, EPIM-F2 or EPIM-F3).

• Thin-Net Cable from the Coaxial Interface Module (EPIM-C).

• AUI Cable from the AUI Interface Module (EPIM-A or

EPIM-X).

Figure 1-1 The MRXI-24

MRXI-24

10BASE-T HUB with LANVIEW

The Complete Networking Solution

INTRODUCTION

1-3

The MRXI fully conforms to the IEEE 802.3 Repeater, AUI, and

10BASE-T speciﬁcations, and provides the ﬂexibility to connect

networks using IEEE 802.3, EthernetVersion 1 orVersion 2 equipment.A

Repeater Interface Controller (RIC) in the MRXI provides full 802.3

repeater capabilities integrated into a single chip. The MRXI transmits

re-timed data packets, regenerates the preamble, extends fragments, and

arbitrates collisions.

The MRXI automatically partitions problem segments, and reconnects

non-problem segments to the network. This feature minimizes the impact

on network operation resulting from a problem on one segment by

isolating the problem segment. Only devices on the problem segment are

affected.When the problem is solved, the MRXI automatically reconnects

the isolated segment to the network.

Since the MRXI utilizes polarity detection and correction, the twisted pair

connections are not sensitive to signal polarity. The network will still

function properly with the (+) and (–) lines within a pair reversed.

Operating in this condition is not recommended and if this condition is

discovered, the segment should be removed from the network and wired

correctly by a technician. This reduces the potential for problems in the

future if equipment changes are made. Connector pinouts are provided in

Chapter 2,

Installation Requirements / Speciﬁcations

You can conﬁgure the two front panel serial ports to support an SNMP

proxy for Uninterruptible Power Supplies (UPS) or the Serial Line

Internet Protocol (SLIP). MIB II and RMON support are built into the

MRXI for network analyzer functionality. In addition, Cabletron’s

Distributed LAN Monitor (DLM), a software option for the MRXI,

provides a method for locally polling and monitoring devices on a LAN to

minimize network management trafﬁc on an enterprise, campus, or wide

area network.

The MRXI uses Flash EEPROMs that allow you to download new and

updated ﬁrmware using Cabletron Systems Remote

LANVIEW/Windows, version 2.3 or later or any device using BOOTP or

TFTP protocols.

The front panel of the MRXI also has a reset switch to initialize the

processor.

INTRODUCTION

1-4

1.4 LANVIEW LEDS AND LCD DISPLAY

Cabletron Systems’LANVIEW Status Monitoring and Diagnostics

System is a convenient troubleshooting tool that helps you diagnose

power failures, collisions, cable faults, and link problems.

The front panel LCD display provides information about the MRXI such

as power up diagnostics, revision levels, MAC and IP addresses, and error

alerts.

1.5 LOCAL MANAGEMENT

There are two RJ-45 ports on the front panel of the MRXI that let you

access Local Management by connecting a DEC VT

™

320 terminal or a

PC using VT320 emulation software. Refer to Chapter 5,

Local

Management

1.6 NETWORK MANAGEMENT CAPABILITIES

The MRXI can be controlled and managed by any SNMP network

management system. These include:

• Cabletron Systems SPECTRUM

• Cabletron Systems Remote LANVIEW

/Windows

™

• Cabletron Systems Remote LANVIEW

for SunNet

™

Manager

• Third Party SNMP compliant Network Management Packages

The MRXI network management capabilities provide the necessary

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

to set up parameters with network management ensures optimal

performance of the MRXI.

For example, you can gather a large amount of statistical information

about the MRXI, including the number of:

• Packets • Receive Collisions

• Transmit Collisions • Giant Packets

• Runt Packets • Misaligned Packets

• CRC Errors • Out of Window Collisions

• Bytes Received

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