Cabletron Systems SEHI-22 User manual

SEHI-22 AND SEHI-24 10BASE-T

INTELLIGENT STACKABLE HUBS

USER’S GUIDE

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

SEHI USER’S GUIDE i

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.

Printed in the United States of America

Order Number: 9031490 August 1995

SPECTRUM

LANVIEW

and

RemoteLANVIEW

are registered trademarks and

EPIM

EPIM-A

EPIM-F1

EPIM-F2

EPIM-F3

EPIM-T

EPIM-X

FOT-F

FOT-F3

HubSTACK

MicroMMAC

SEH

SEHI

and

TMS-3

are trademarks of Cabletron Systems, Inc.

i960

is a registered trademark of Intel Corporation.

CHAMP

is a trademark of AMP, Inc.

CompuServe

is a registered trademark of CompuServe, Inc.

DEC

VT200

VT300

, and

VT320

are trademarks of Digital Equipment Corporation.

Ethernet

is a trademark of Xerox Corporation.

IBM

is a registered trademark of International Business Machines Corporation.

is a registered trademark of American Telephone and Telegraph Company.

UNIX

is a trademark of Unix Systems Laboratories, Inc.

Windows

is a registered trademark of Microsoft Corporation.

This electric hazard symbol appears in the SEHI User’s Guide. Read all

instructions following this symbol. Failure to follow the instructions

appearing with this symbol could result in the presence of an electric

hazard which has the potential to cause injury.

Printed On Recycled Paper

NOTICE

ii SEHI USER’S GUIDE

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,pursuanttoPart15of the FCC rules.These limits are designedto 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

thisequipment in a residentialarea is likelyto cause interference inwhich case theuserwill 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.

VCCI NOTICE

This equipment is in the 1st Class Category (information equipment to be used in commercial and/or

industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference

by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial

and/or industrial areas.

Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be

caused to radios and TV receivers, etc.

Read the instructions for correct handling.

NOTICE

SEHI USER’S GUIDE 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 TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED

PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE. You have the right to use only the one (1) copy of 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

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

iv SEHI USER’S GUIDE

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 EXPRESSED OR IMPLIED, INCLUDING

BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND

FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO 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 WARRANTIES, 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.

SEHI USER’S GUIDE v

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

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

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

1.3 SEHI OVERVIEW....................................................................................1-3

1.4 SEHI FEATURES....................................................................................1-3

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

1.6 REMOTE NETWORK MANAGEMENT CAPABILITIES..........................1-5

1.7 OPTIONAL FEATURES ..........................................................................1-5

1.8 RELATED MANUALS..............................................................................1-7

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.......................................... 2-2

2.2 NETWORK PORT SPECIFICATIONS ....................................................2-4

2.3 COM PORT REQUIREMENTS ...............................................................2-4

2.4 TRANSCEIVER REQUIREMENTS.........................................................2-5

2.5 OPERATING SPECIFICATIONS.............................................................2-5

CHAPTER 3 INSTALLATION

3.1 UNPACKING THE SEHI..........................................................................3-1

3.2 PRE-INSTALLATION CHECKOUT .........................................................3-2

3.3 INSTALLING THE SEHI..........................................................................3-2

3.3.1 Tabletop or Shelf Installation.................................................... 3-3

3.3.2 Rackmount Installation Requirements...................................... 3-4

3.3.3 Attaching the Strain Relief Bracket........................................... 3-5

3.3.4 Rackmounting the SEHI........................................................... 3-6

3.3.5 Stacking the SEHI.................................................................... 3-7

3.4 CONNECTING THE SEHI TO THE POWER SOURCE..........................3-9

3.5 ADDING/REPLACING EPIMs ...............................................................3-10

CHAPTER 4 CONNECTING TO THE NETWORK

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

4.1.1 Connecting to Network Ports, SEHI-22 and SEHI-24 .............. 4-1

4.1.2 Connecting a UTP Segment to an EPIM-T .............................. 4-3

4.1.3 Connecting a Fiber Segment to an EPIM-F1/F2/F3................. 4-4

4.1.4 Connecting a Thin-Net Segment to an EPIM-C ....................... 4-7

4.1.5 Connecting an AUI Cable to an EPIM-A .................................. 4-8

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

4.2 FINISHING THE INSTALLATION..........................................................4-11

CONTENTS

vi SEHI USER’S GUIDE

CHAPTER 5 TROUBLESHOOTING

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

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

5.3 USING THE RESET BUTTON.................................................................5-4

5.4 SETTING THE NVRAM SWITCH............................................................5-5

CHAPTER 6 LOCAL MANAGEMENT

6.1 MANAGEMENT TERMINAL REQUIREMENTS......................................6-2

6.1.1 Console Cable Configuration.................................................... 6-2

6.1.2 Management Terminal Setup Parameters................................ 6-3

6.2 ACCESSING LOCAL MANAGEMENT....................................................6-5

6.3 USING THE LOCAL MANAGEMENT SCREENS ...................................6-7

6.3.1 The Community Name Table Screen....................................... 6-7

6.3.2 The Configuration Screen....................................................... 6-10

6.3.3 The Trap Table Screen........................................................... 6-15

6.3.4 The SNMP Tools Screen........................................................ 6-17

6.3.5 The Device Statistics Screen.................................................. 6-22

APPENDIX A EPIM INFORMATION

A.1 EPIM SPECIFICATIONS........................................................................ A-1

A.1.1 EPIM-T ..................................................................................... A-1

A.1.2 EPIM-F1 and EPIM-F2............................................................. A-2

A.1.3 EPIM-F3 ................................................................................... A-3

A.1.4 EPIM-C..................................................................................... A-5

A.1.5 EPIM-A and EPIM-X (AUI Port)................................................ A-6

APPENDIX B IMAGE FILE DOWNLOAD USING OIDs

B.1 SETTING UP A UNIX WORKSTATION AS A TFTP SERVER............... B-1

B.2 STANDARD LOCAL DOWNLOAD......................................................... B-3

INDEX

SEHI USER’S GUIDE 1-1

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

SEHI-22 and

SEHI-24 10BASE-T

Intelligent Stackable Hub User’s Guide

. This manual provides

installation instructions and reference information for the SEHI-22 and

SEHI-24.

Figure 1-1. Front and Rear Views of the SEHI-22 and SEHI-24

1.1 USING THIS MANUAL

Read through this manual to gain an understanding of the features and

capabilities of the SEHI. A general knowledge of Ethernet and IEEE

802.3 type data communications networks and their physical layer

components is helpful when installing the SEHI.

HubSTACK10BASE-T HUB WITH LANVIEW®

SEHI-22

1491_1

EPIM-1

EPIM-2

HubSTACK10BASE-T HUB WITH LANVIEW®

SEHI-24

HubSTACK10BASE-T HUB WITH LANVIEW®

SEHI-24

EPIM-1

HubSTACK10BASE-T HUB WITH LANVIEW®

SEHI-22

SEH INTERCONNECT OUT

PWR

CPU

CLN E1

RCV

LNK

RCV

LNK

24 22 20 18 16 14 12 246810

23 21 19 17 15 13 11 13579

2X4X6X8X10X12X

14X16X18X20X22X24X

1X3X5X7X9X11X13X15X17X19X21X23X

COM

RESET

PWR

CPU

CLN E1

RCV

LNK

RCV

LNK

12 246810

11 13579

2X4X6X8X10X12X

1X3X5X7X9X11X

COM

RESET

CHAPTER 1:

INTRODUCTION

1-2 SEHI USER’S GUIDE

Chapter 1,

Introduction

, outlines the contents of this manual, brieﬂy

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

Chapter 2,

Installation Requirements/Speciﬁcations

, describes

installation requirements, network guidelines, and SEHI operating

speciﬁcations.

Chapter 3,

Installation

, contains instructions for installing the SEHI as a

stackable or stand-alone hub.

Chapter 4,

Connecting to the Network

, explains how to connect the

SEHI to the network using the various media types.

Chapter 5,

Troubleshooting

, describes how to use the LANVIEW LEDs

to troubleshoot network problems.

Chapter 6,

Local Management

, describes how to use SEHI Local

Management screens and the available commands.

Appendix A,

EPIM Information

, provides speciﬁcations, cabling

information, and switch settings for the Ethernet Port Interface Modules.

Appendix B,

Image File Download Using OIDs

, provides instructions

for setting up a tftp server and downloading image ﬁles to the SEHI by

setting speciﬁc MIB OID strings.

1.2 GETTING HELP

To obtain additional support related to the Cabletron Systems SEHI, or if

there are any questions, comments, or suggestions concerning this

manual, contact Cabletron Systems Technical Support:

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

Monday-Friday; 8am - 8pm Eastern Time

By CompuServe........GO CTRON from any ! prompt

By Internet mail [email protected]

By FTP......................134.141.197.25

anonymous

, Password:

your email address

SEHI OVERVIEW

SEHI USER’S GUIDE 1-3

1.3 SEHI OVERVIEW

The 10BASE-T SEHI-22 and SEHI-24 are intelligent repeater hubs. The

SEHI-22 has 12 RJ45 ports and one Ethernet Port Interface Module

(EPIM) port on the front panel for network connections while the

SEHI-24 has 24 RJ45 ports and two EPIM ports on the front panel for

network connections. Both models have one rear panel HubSTACK

Interconnect Bus port for stackable connections. The SEHI is designed to

manage the Cabletron SEH series of non-intelligent stackable hubs.

1.4 SEHI FEATURES

Repeater Functionality

The SEHI 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 SEHI transmits retimed data packets, regenerates the preamble,

extends fragments, and arbitrates collisions.

The SEHI automatically partitions problem segments, and reconnects

repaired 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 SEHI automatically reconnects the

isolated segment to the network.

Polarity Detection and Correction

Each twisted pair port on the SEHI incorporates a Polarity Detection and

Correction feature that allows the SEHI to pass data regardless of the

polarity of the twisted pair segment’s receive link. Cabletron does not

recommend operating in this condition. When this condition is detected,

remove the segment from the network and wire it correctly to reduce the

potential for problems if equipment changes are made.

Flash EEPROMs

The SEHI uses Flash EEPROMs that allow the downloading of new and

updated ﬁrmware in conjunction with Cabletron’s Remote LANVIEW/

Windows, version 2.3 or later or any device utilizing BOOTP or TFTP

protocols.

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