Cabletron Systems SEH-24 Manual de usuario

SEH-22, SEH-24, SEH-32, AND SEH-34

10BASE-T STACKABLE HUB

USER’S GUIDE

CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005

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.

INNOEVENTSHALLCABLETRONSYSTEMSBELIABLEFORANYINCIDENTAL,

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 03867-0505

Printed in the United States of America

Order Number: 9030903-01 February 94

SPECTRUM

LANVIEW

Remote LANVIEW

HubSTACK

™

, and

MicroMMAC

™

are trademarks of Cabletron Systems, Inc.

IBM

is a registered trademark of International Business Machines Corporation.

CompuServe

is a registered trademark of CompuServe, Inc.

DEC

VT200

, and

VT300

are trademarks of Digital Equipment Corporation.

Ethernet

is a trademark of Xerox Corporation.

Windows

is a registered trademark of Microsoft Corporation.

Printed On Recycled Pa

per

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 Class A 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.

NOTICE

iii

CABLETRON SYSTEMS, INC.

PROGRAM LICENSE AGREEMENT

IMPORTANT: Before utilizing this product, carefully read this License Agreement.

This document is an agreement between you, the end user, and Cabletron Systems, Inc.

(“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron

software program (the “Program”) contained in this package. The Program may be

contained in firmware, chips or other media. BY UTILIZING THE ENCLOSED

PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS

AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF

WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE

TERMSOFTHISAGREEMENT,PROMPTLYRETURNTHEUNUSEDPRODUCTTO

THE PLACE OF PURCHASE FOR A FULL REFUND.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE. Youhavetherighttouseonly the one (1)copyof 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.

2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or

disassemble the Program.

3. APPLICABLE LAW. This License Agreement shall be interpreted and governed

under the laws and in the state and federal courts of New Hampshire. You accept

the personal jurisdiction and venue of the New Hampshire courts.

NOTICE

EXCLUSION OF WARRANTY

AND DISCLAIMER OF LIABILITY

1. EXCLUSION OF WARRANTY. Except as may be specifically provided by

Cabletron in writing, Cabletron makes no warranty, expressed or implied,

concerning the Program (including Its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE

SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF

MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH

RESPECTTO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS,

AND ANY ACCOMPANYING HARDWARE.

2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL

CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES

WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS

OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS

INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE

DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO

USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME

STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY

FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION

OR LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE

ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

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.

For Department of Defense units, the product is licensed with “Restricted Rights” as

defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-

7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is

subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical

Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35

Industrial Way. Rochester, New Hampshire 03867

CONTENTS

TABLE OF CONTENTS

APPENDIX A TABLE OF CONTENTS v

CHAPTER 1 INTRODUCTION

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

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

1.3 SEH OVERVIEW.......................................................................1-2

1.4 SEH FEATURES .......................................................................1-3

1.5 STACKABLE CAPABILITIES..................................................1-4

1.6 OPTIONAL FEATURES ...........................................................1-4

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

CHAPTER 2 INSTALLATION

REQUIREMENTS/SPECIFICATIONS

2.1 CABLE SPECIFICATIONS.......................................................2-1

2.1.1 HubSTACK Interconnect Cable Requirements...........2-1

2.1.2 UTP and STP Cable Specifications for the Network Ports

and EPIM-T Module......................................................2-2

2.1.3 Multimode Fiber Optic Cable Specifications for the

EPIM-F1 and EPIM-F2 Modules .................................2-4

2.1.4 Single Mode Fiber Optic Cable Specifications for

the EPIM-F3 Module ....................................................2-5

2.1.5 Thin-net Network Requirements for the EPIM-C Mod-

ule 2-6

2.1.6 AUI Cable Requirements for the EPIM-A and EPIM-X

Modules..........................................................................2-7

2.2 NETWORK PORT SPECIFICATIONS ....................................2-7

2.2.1 SEH-22 and SEH-24 Network Port Specifications......2-8

2.2.2 SEH-32 and SEH-34 Network Port Specifications......2-8

2.3 EPIM SPECIFICATIONS .......................................................2-10

2.3.1 EPIM-T........................................................................2-10

2.3.2

EPIM-F1/F2.................................................................2-11

2.3.3 EPIM-F3......................................................................2-12

2.3.4 EPIM-C........................................................................2-14

2.3.5 EPIM-A and EPIM-X (AUI Port)................................2-15

2.4 TRANSCEIVER REQUIREMENTS.......................................2-16

2.5 OPERATING SPECIFICATIONS...........................................2-16

CONTENTS

CHAPTER 3 INSTALLATION

3.1 UNPACKING THE SEH............................................................3-1

3.2 INSTALLING THE SEH............................................................3-1

3.2.1 Stacking the SEH..........................................................3-2

3.2.2 Attaching the Strain Relief Bracket.............................3-4

3.2.3 Rack Mounting the SEH...............................................3-5

3.2.4 Wall Mounting the SEH................................................3-6

3.2.5 Free-Standing Installation............................................3-7

3.3 CONNECTING THE SEH TO THE POWER SOURCE..........3-8

CHAPTER 4 CONNECTING TO THE NETWORK

4.1 CONNECTING THE SEH TO THE NETWORK .....................4-1

4.1.1 Connecting Network Ports SEH-22 and SEH-24.........4-1

4.1.2 Connecting Network Ports SEH-32 and SEH-34.........4-3

4.1.3 Connecting a UTP Segment to an EPIM-T..................4-4

4.1.4 Connecting a Fiber Optic Link Segment to an EPIM-F1,

EPIM-F2, or EPIM-F34-5

4.1.5 Connecting a Thin-Net Segment to an EPIM-C ..........4-8

4.1.6 Connecting an AUI Cable to an EPIM-A ...................4-10

4.1.7 Connecting an AUI Cable to an EPIM-X....................4-11

4.2 FINISHING THE INSTALLATION........................................4-12

CHAPTER 5 TROUBLESHOOTING

5.1 INSTALLATION CHECK-OUT ................................................5-1

5.2 USING LANVIEW......................................................................5-2

APPENDIX B TWISTED PAIR WIRING TABLES A-1

INTRODUCTION

Page 1-1

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

SEH-22, SEH-24, SEH-32, and

SEH-34 10BASE-T Stackable Hub User’s Guide

. This manual

explains installation instructions and provides reference information

for the SEH-22, 24, 32, and 34.

Note

: The term SEH (Stackable Ethernet Hub) is used throughout this

manual when describing features and functions that are common to the

SEH-22, 24, 32, and 34.

1.1 USING THIS MANUAL

Read through this manual completely to familiarize yourself with its

content and to gain an understanding of the features and capabilities

of the SEH.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 SEH.

Chapter 1,

Introduction

,outlines the contents of this manual, brieﬂy

describes SEH features, and concludes with a list of related manuals.

Chapter 2,

Installation Requirements/Speciﬁcations

, describes

installation requirements, network guidelines, and SEH operating

speciﬁcations.

Chapter 3,

Installation

,contains instructions for installing your SEH

as a stackable or stand-alone hub.

Chapter 4,

Connecting to the Network

,explains how to connect the

SEH to the network using the various media types.

Chapter 5,

Troubleshooting,

describes how to use the LANVIEW

LEDs to troubleshoot network problems.

Appendix A,

Twisted Pair Wiring Tables

, contains wiring pinouts

for Punch Down Block applications.

INTRODUCTION

Page 1-2

1.2 GETTING HELP

If you need additional support related to the Cabletron Systems SEH,

or if you have any questions,comments,or suggestions concerning this

manual, 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 SEH OVERVIEW

The 10BASE-T SEH is a non-intelligent repeating hub that provides

front panel ports for network connections and rear panel HubSTACK

Interconnect Bus ports for stackable connections.

Figure 1-1. The SEH-24 and SEH-34

SEH-24 10BASE-T HUB WITH LANVIEW®

OUT SEH INTERCONNECT IN

EPIM-1

EPIM-2

HubSTACK 10BASE-T HUB WITH LANVIEW®

SEH-24

RCV

LNK

RCV

LNK

24X 23X 22X 21X 20X 19X 18X 17X 16X 15X 14X 13X

12X 11X 10X 9X 8X 7X 6X 5X 4X 3X 2X 1X

24 23 22 21 20 19 18 17 16 15 14 13

12 11 10 9 8 7 6 5 4 3 2 1

PWR

MGMT

CLN

SEH-34 10BASE-T HUB WITH LANVIEW®

OUT SEH INTERCONNECT IN

EPIM-1

EPIM-2

HubSTACK 10BASE-T HUB WITH LANVIEW®

SEH-34

RCV

LNK

RCV

LNK

24 23 22 21 20 19 18 17 16 15 14 13

12 11 10 9 8 7 6 5 4 3 2 1

PWR

MGMT

CLN 12X 1X

24X 13X

INTRODUCTION

Page 1-3

You can stack together up to ﬁve SEH hubs using Cabletron Systems’

external HubSTACK Interconnect cables. If you want to add

management to the stack, Cabletron Systems offers the MicroMMAC

and the SEHI intelligent hubs.You can stack up to four SEHs with

one intelligent hub. Stackable conﬁgurations let you maintain only

one IEEE repeater hop while providing up to 130 Ethernet ports.

The SEH-22/24 and SEH-32/34 are functionally identical with the

exception of the network ports:

•

SEH-22

, 12 RJ45 network ports and one EPIM port.

•

SEH-24

, 24 RJ45 network ports and two EPIM ports.

•

SEH-32

, one 50 pin Champ connector, providing 12 twisted

pair segments, and one EPIM port.

•

SEH-34

, two 50 pin Champ connectors, providing 24 twisted

pair segments, and two EPIM ports.

1.4 SEH FEATURES

Repeater Functionality

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

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

networks using IEEE 802.3, Ethernet Version 1 or Version 2

equipment.The SEH transmits re-timed data packets,regenerates the

preamble, extends fragments, and arbitrates collisions.

The SEH automatically partitions problem segments, and reconnects

repaired segments to the network.This feature minimizes the impact

on network operation by isolating the problem segment. Only devices

on the problem segment are affected.When the problem is solved, the

SEH automatically reconnects the isolated segment to the network.

Polarity Detection and Correction

Each twisted pair port on the SEH incorporates a Polarity Detection

and Correction feature that allows the SEH to pass data regardless of

the polarity of the twisted pair segment’s receive link.We do not

recommend operating in this condition. If you discover this condition,

remove the segment from the network and wire it correctly.This

reduces the potential for problems if equipment changes are made.

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