Cabletron Systems SEHI100TX-22 User Manual

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SEHI100TX-22 100BASE-T

INTELLIGENT STACKABLE HUB

USER’S GUIDE

Page 2

Page 3

Only qualiﬁed personnel should perform installation procedures.

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.



Order Number: 9031511-02 November 1996

SPECTRUM, LANVIEW EPIM-100FX, EPIM-100TX, EPIM-100FMB, HubSTACK, MicroMMAC, SEH

trademarks of Cabletron Systems, Inc. All other product names mentioned in this manual may be trademarks or registered trademarks of

their respective companies.

and

BRIM

are registered trademarks and

Element Manager, EPIM

, and

SEHI

are

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:

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

Changes or modifications made to this device which are not e xpressly appro v ed by the

Printed on Recycled Paper

SEHI100TX User’s Guide i

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Notice

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 T echnology 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.

CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT

IMPORTANT:

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.

Before utilizing this product, carefully read this License Agreement.

ii SEHI100TX User’s Guide

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Notice

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE

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 LA W. 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.

. You have the right to use only the one (1) copy of the Program provided in this

EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY

1. EXCLUSION OF

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 ACCOMP ANYING WRITTEN MA TERIALS, AND ANY A CCOMP ANYING 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.

WARRANTY. Except as may be specifically provided by Cabletron in

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 03867-0505.

SEHI100TX User’s Guide iii

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Notice

DECLARATION OF CONFORMITY

Application of Council Directive(s):

Manufacturer’s Name:

Manufacturer’s Address:

European Representative Name:

European Representative Address:

Conformance to Directive(s)/Product Standards:

Equipment T ype/Environment:

W e the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the above directives.

Manufacturer Legal Representative in Europe

89/336/EEC 73/23/EEC

Cabletron Systems, Inc. 35 Industrial Way

PO Box 5005 Rochester, NH 03867

Mr. J. Solari Cabletron Systems Limited

Nexus House, Newbury Business Park London Road, Newbury Berkshire RG13 2PZ, England

EC Directive 89/336/EEC EC Directive 73/23/EEC EN 55022 EN 50082-1 EN 60950

Networking Equipment, for use in a Commercial or Light Environment.

Industrial

Mr. Ronald Fotino Mr. J. Solari

___________________________________ ___________________________________

Full Name Full Name Principal Compliance Engineer Managing Director - E.M.E.A.

___________________________________ ___________________________________

Title Title Rochester, NH, USA Newbury, Berkshire, England

___________________________________ ___________________________________

Location Location

iv SEHI100TX User’s Guide

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CHAPTER 1 INTRODUCTION

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

1.2 Document Conventions...............................................................1-2

1.3 Getting Help.................................................................................1-3

1.4 Related Manuals..........................................................................1-4

CHAPTER 2 SEHI FEATURES AND OPTIONS

2.1 SEHI Overview............................................................................2-1

2.2 SEHI Features............................................................................. 2-2

2.3 Stackable Capabilities.................................................................2-3

2.4 Rack Mounting Capabilities......................................................... 2-4

2.5 Remote Network Management....................................................2-4

2.6 Optional EPIMs............................................................................2-4

CHAPTER 3 INSTALLATION REQUIREMENTS

AND SPECIFICATIONS

3.1 Cable Specifications.................................................................... 3-1

3.1.1 HubSTACK Interconnect Cable Requirements............... 3-1

3.1.2 UTP Cable Specifications...............................................3-2

3.1.3 Multimode Fiber Optic Cable Specifications...................3-3

3.2 Network Cable Lengths...............................................................3-4

3.3 Network Port Specifications.........................................................3-6

3.4 COM Port Requirements.............................................................3-6

3.5 Operating Specifications..............................................................3-7

3.5.1 Power Supply Requirements .......................................... 3-7

3.5.2 Environmental Requirements .........................................3-7

3.5.3 Agency Approvals...........................................................3-7

3.6 Physical Specifications................................................................ 3-8

CHAPTER 4 INSTALLATION

4.1 Unpacking the SEHI....................................................................4-1

4.2 Pre-Installation Checkout ............................................................4-2

4.3 Tabletop or Shelf Installation....................................................... 4-3

4.4 Rackmount Installation................................................................4-3

4.5 Powering Up and Stacking the SEHI...........................................4-7

4.6 Installing an EPIM........................................................................4-9

SEHI100TX User’s Guide v

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Contents

CHAPTER 5 CONNECTING TO THE NETWORK

5.1 Connecting the SEHI to the Network ...........................................5-1

5.1.1 Connecting to Network Ports...........................................5-1

5.1.2 Connecting to an EPIM-100TX........................................5-2

5.1.3 Connecting to an EPIM-100FX or EPIM-100FMB...........5-4

5.2 Testing the Installation.................................................................5-5

CHAPTER 6 TROUBLESHOOTING

6.1 Installation Test............................................................................6-1

6.2 Using LANVIEW...........................................................................6-2

6.3 Using the RESET Button .............................................................6-4

6.4 Setting the NVRAM Switch ..........................................................6-5

CHAPTER 7 LOCAL MANAGEMENT

7.1 Keyboard Conventions.................................................................7-2

7.2 Management Terminal Setup.......................................................7-3

7.3 Accessing Local Management.....................................................7-6

7.4 The Feature Selection Screen .....................................................7-8

7.5 The Community Name Table Screen...........................................7-9

7.5.1 Editing the Community Name Field...............................7-11

7.6 The Configuration Screen..........................................................7-12

7.6.1 Setting the IP Address...................................................7-13

7.6.2 Setting the Subnet Mask...............................................7-14

7.6.3 Setting the Default Gateway..........................................7-15

7.6.4 Using the Port Enable Override.....................................7-15

7.6.5 Exiting the Configuration Screen...................................7-15

7.7 The Trap Table Screen..............................................................7-16

7.7.1 Configuring the Trap Table............................................7-17

7.7.2 Exiting the Trap Table Screen.......................................7-18

7.8 The SNMP Tools Screen ...........................................................7-18

7.8.1 Getting Individual OIDs .................................................7-20

7.8.2 Getting the Next OID.....................................................7-21

7.8.3 Setting an OID...............................................................7-21

7.8.4 Viewing Multiple OIDs...................................................7-22

7.8.5 Walking Through OIDs..................................................7-22

7.8.6 Stepping Through OIDs.................................................7-23

7.8.7 Cycling Through OIDs...................................................7-23

7.8.8 Repeating the Last OID.................................................7-23

7.8.9 Exiting the SNMP Tools Screen....................................7-23

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Contents

7.9 The Device Statistics Screen.....................................................7-24

7.9.1 Selecting the Appropriate Module/Port.........................7-27

7.9.2 Using the ENABLE PORT Command...........................7-27

7.9.3 Using the DISABLE PORT Command..........................7-27

7.9.4 Setting the UPDATE-FREQency Field .........................7-28

7.9.5 Exiting the Device Statistics Screen ............................. 7-28

APPENDIX A EPIM SPECIFICATIONS

A.1 EPIM Specifications.....................................................................A-1

A.1.1 EPIM-100TX....................................................................A-1

A.1.2 EPIM-100FX....................................................................A-2

A.1.3 EPIM-100FMB.................................................................A-3

APPENDIX B IMAGE FILE DOWNLOAD USING OID STRINGS

B.1 Setting UNIX Workstation as TFTP Server .................................B-2

B.2 Standard Local Download ...........................................................B-3

INDEX

SEHI100TX User’s Guide vii

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Contents

viii SEHI100TX User’s Guide

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CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

Intelligent Stackable Hub User’s Guide

installation instructions, troubleshooting, and reference information for the SEHI100TX-22.

NOTE

The term SEHI (Stackable Ethernet Hub with Intelligence) is used throughout this manual when describing the features and functions of the SEHI100TX-22.

SEHI100TX-22 100BASE-T

. This manual provides

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

802.3u type data communications networks and their physical layer components is helpful when installing the SEHI.

Chapter 1, objectives and conventions of this manual. This chapter also provides information about how to get help and concludes with a list of related manuals.

Chapter 2, and provides information about available options.

Introduction

SEHI Features and Options

, outlines the contents and describes the

, brieﬂy describes SEHI features

Chapter 3, installation requirements, network guidelines, and SEHI speciﬁcations.

Chapter 4, stackable or standalone hub.

Chapter 5, SEHI to the network using the various media types.

Chapter 6, to troubleshoot network problems.

SEHI100TX User’s Guide 1-1

Installation Requirements and Specifications

Installation

Connecting to the Network

Troubleshooting

, contains instructions for installing the SEHI as a

, explains how to connect the

, describes how to use the LANVIEW LEDs

, provides

Page 12

Chapter 1:

Introduction

Chapter 7,

Local Management

, describes how to use SEHI Local

Management screens and the available commands. Appendix A,

EPIM Specifications

, provides speciﬁcations, cabling

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

Image File Download Using OID Strings

, provides instructions for setting up a TFTP server and downloading an image ﬁle to the SEHI by setting speciﬁc MIB OID strings.

1.2 DOCUMENT CONVENTIONS

The following conventions are used throughout this document:

NOTE

TIP

Note

symbol. Calls the reader’s attention to any item of

information that may be of special importance.

Tip

symbol. Conveys helpful hints concerning procedures or

actions.

CAUTION

WARNING

Caution

damage to the equipment.

Electrical Hazard Warning

that could result in personal injury or death due to an electrical hazard.

Warning

personal injury or death.

symbol. Contains information essential to avoid

symbol. Warns against an action

symbol. Warns against an action that could result in

1-2 SEHI100TX User’s Guide

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Getting Help

1.3 GETTING HELP

If you need additional support related to this device, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support:

Phone (603) 332-9400

Monday – Friday; 8 A.M. – 8 P.M. Eastern Time CompuServe GO CTRON from any ! prompt Internet mail support@ctron.com FTP ctron.com (134.141.197.25)

BBS (603) 335-3358

Modem setting 8N1: 8 data bits, 1 stop bit, No parity

For additional information about Cabletron Systems products, visit our W orld W ide Web site: http://www .cabletron.com/

Before calling Cabletron Systems Technical Support, have the following information ready:

anonymous

your email address

• A description of the failure

• A description of any action(s) already taken to resolve the problem (e.g., changing mode switches, rebooting the unit, etc.)

• A description of your network environment (layout, cable type, etc.)

• Network load and frame size at the time of trouble (if known)

• The serial and revision numbers of all Cabletron Systems products in the network

• The device history (i.e., have you returned the device before, is this a recurring problem, etc.)

• Any previous Return Material Authorization (RMA) numbers

SEHI100TX User’s Guide 1-3

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Chapter 1:

Introduction

1.4 RELATED MANUALS

Use the Cabletron Systems supplement the procedures and other technical data provided in this manual. The procedures contained in the

User’s Guide

are referenced where appropriate, but not repeated in this

manual.

SEH100TX-22 100BASE-T User’s Guide

SEH100TX-22 100BASE-T

1-4 SEHI100TX User’s Guide

Page 15

CHAPTER 2

SEHI FEATURES AND OPTIONS

This chapter provides an overview of the SEHI and contains sections detailing features and available options.

NOTE

SEH (Stackable Ethernet Hub) are used throughout this manual when describing the features and functions of the SEHI100TX-22 and the SEH100TX-22.

HubSTACK 100BASE-TX HUB WITH LANVIEW® SEHI100TX-22

PWR

The terms SEHI (Stackable Ethernet Hub with Intelligence) and

COM

NET. ADD.

CPU CLN

Figure 2-1 The SEHI100TX-22

RESET

SEHI100TX-22 100BASE-T HUB WITH LANVIEW®

Power Supply

FRONT VIEW

RCV LNK

22 21 20 19 18 17 16 15 14 13 12

RCV LNK

11 10 9 8 7 6 5 4 3 2 1

Port Status LEDs System LEDs COM Port RESET Button

REAR VIEW

22X 21X 20X 19X 18X 17X

E 1

11X 10X 9X 8X 7X 6X

Interconnect Bus "OUT" Port

Interconnect Bus "IN" Port

16X 15X 14X 13X 12X

5X 4X 3X 2X 1X

Network Ports 1-22

EPIM Slot

EPIM 1

OUT

SEH100TX INTERCONNECT

1511_18

2.1 SEHI OVERVIEW

The SEHI100TX-22 is an intelligent repeating hub providing 22 RJ45 ports and one Ethernet Port Interface Module (EPIM) port on the front panel for network connections. The SEHI has two rear panel HubSTACK Interconnect Bus ports for stackable connections. The SEHI100TX-22 can manage up to four of Cabletron Systems SEH100TX-22 non-intelligent stackable hubs.

SEHI100TX User’s Guide 2-1

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Chapter 2:

CAUTION

SEHI Features and Options

The SEHI100TX-22 operates in a 100BASE-T Ethernet network. This product will NOT operate in a 10BASE-T environment. Connect the SEHI100TX-22 and SEH100TX-22 only to similar 100BASE-T products.

The SEHI100TX-22 supports the EPIM-100TX, EPIM-100FX, and the EPIM-100FMB. No other Cabletron Systems EPIMs operate in this device.

2.2 SEHI FEATURES

The SEHI operating features are as follows:

Repeater Functionality

The SEHI fully conforms to the IEEE 802.3u Repeater speciﬁcations. The SEHI transmits retimed data packets, regenerates the preamble, extends fragments, and arbitrates collisions.

The SEHI100TX-22 meets IEEE 802.3u Repeater Class I standards. Class I standards allow one repeater between any two Data Terminal Equipment (DTE) devices within a single collision domain (network).

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.

FLASH EEPROMs

The SEHI uses FLASH EEPROMs that allow the downloading of new and updated ﬁrmware using Cabletron Systems SPECTRUM Element Manager/Windows or any device using BOOTP or TFTP protocols.

2-2 SEHI100TX User’s Guide

Page 17

Stackable Capabilities

LANVIEW LEDs

Cabletron Systems LANVIEW status monitoring and diagnostics system is a troubleshooting tool that helps in diagnosing power failures, collisions, cable faults, and link problems. The LANVIEW LEDs are conveniently located on the SEHI front panel.

RESET Button

Resetting the hub with the front panel RESET Button reboots the SEHI and initializes the processor. Resetting the SEHI also resets all of the SEH non-intelligent hubs in the stack.

Local Management

Manage the SEHI and its attached segments through Local Management on the SEHI. Local Management provides full packet and error statistics for the entire stack, individual device, or individual port. Access Local Management by attaching a DEC VT320 terminal or a PC using VT320 emulation software to the RJ45 COM port on the SEHI. Cabletron Systems provides a UTP console cable with RJ45 connectors at each end, adapters for DB9 or DB25 connections and an instruction sheet with adapter pinout information with the SEHI. Chapter 7,

Management

, provides detailed information on setting up and managing

Local

your network through Local Management.

2.3 STACKABLE CAPABILITIES

The SEHI100TX-22 intelligent hub is designed to manage a stack of up to four Cabletron Systems SEH100TX-22 non-intelligent hubs. The SEHI is placed at the bottom of the stack. It manages all SEH hubs in the stack and provides full packet and error statistics for the entire stack, individual device, or individual port.

Stack up to four SEH non-intelligent hubs with one SEHI using the Cabletron Systems external HubSTACK Interconnect cables provided with each SEH. Stackable conﬁgurations make it possible to maintain only one IEEE repeater hop while providing up to 120 ports. Hubs can be added or removed from the stack without having to po wer do wn the entire stack.

SEHI100TX User’s Guide 2-3

Page 18

Chapter 2:

SEHI Features and Options

2.4 RACK MOUNTING CAPABILITIES

The SEHI can be installed in a 19-inch rack. Cabletron Systems provides brackets and mounting screws with the SEHI. See Chapter 4,

Installation

, for complete rack mounting instructions.

2.5 REMOTE NETWORK MANAGEMENT

Manage the SEHI remotely with any SNMP network management system. Cabletron Systems offers the following remote management packages:

• Cabletron Systems SPECTRUM

• Cabletron Systems SPECTRUM Element Manager/Windows

• Cabletron Systems Remote SPECTRUM Portable Management Applications

• Third Party SNMP compliant Network Management Packages

2.6 OPTIONAL EPIMS

EPIMs are not included with the SEHI, but can be purchased separately from Cabletron Systems.

EPIMs enable the expansion of a network through different types of media. Cabletron Systems offers three optional EPIMs for the SEHI100TX-22 and the SEH100TX-22 as shown in Table 2-1.

Table 2-1 100BASE-TX/FX/FMB EPIMs

EPIM Media Type Connector

EPIM-100TX Category 5 UTP Cable RJ45 EPIM-100FX Multimode Fiber Optic Cable SC EPIM-100FMB for

buffered uplinks

2-4 SEHI100TX User’s Guide

Multimode Fiber Optic Cable SC

Page 19

CHAPTER 3

INSTALLATION REQUIREMENTS

AND SPECIFICATIONS

This chapter describes cabling requirements, network guidelines, and operating speciﬁcations for the SEHI100TX-22.

The network must meet the requirements and conditions speciﬁed in this chapter to obtain satisfactory performance from

CAUTION

3.1 CABLE SPECIFICATIONS

The front panel SEHI100TX-22 network ports support Category 5 Unshielded Twisted Pair (UTP) cabling. Ethernet Port Interface Modules (EPIMs) expand the network using UTP (EPIM-100TX) or multimode ﬁber optic (EPIM-100FX or EPIM-100FMB) cabling. For information concerning the three EPIM types, refer to Appendix A. The rear panel Interconnect Bus ports support Cabletron Systems Interconnect cables for stackable applications.

this equipment. Failure to follow these guidelines could result in poor network performance.

T ak e care in planning and preparing the network cabling and connections. The quality of the connections and the length of cables are critical factors in determining the reliability of the network. The following sections describe speciﬁcations for each media type.

3.1.1 HubSTACK Interconnect Cable Requirements

Attach the SEHI to the stacked SEH modules with the HubSTACK Interconnect cables provided with each SEH and available only from Cabletron Systems (P/N 9380209). The cable attaches to the SEHI rear panel bus “OUT” port. The SEHI must be placed at the bottom of the stack. Stack up to four SEH hubs together with one SEHI.

SEHI100TX User’s Guide 3-1

Page 20

Chapter 3: Installation Requirements and Speciﬁcations

3.1.2 UTP Cable Speciﬁcations

The device at the other end of the twisted pair segment must meet IEEE

802.3u 100BASE-T speciﬁcations. When connecting a 100BASE-TX

Twisted Pair Segment to the SEHI twisted pair network ports and the EPIM-100TX module, the network must meet the following requirements:

Length

The IEEE 802.3u 100BASE-T standard requires that 100BASE-TX devices be able to transmit over a 100 meter (328 foot) link using Category 5 UTP wire. The cable used must meet the Horizontal requirements and 90-meter length limitations. Patch cable should be used on each end of the Horizontal wire to make connections to punch down blocks, panels, and other connecting devices. The combined lengths of the patch cords must not exceed 10 meters so the total segment length does not exceed 100 meters (328 feet).

Category 5 cables are marked on the cable jacket as Cat 5, Category 5, Level 5, Level V, or an equivalent.

Impedance

UTP cables typically have an impedance of between 85 to 110 ohms.

Jitter

Intersymbol interference and reﬂections cause jitter in the bit cell timing, resulting in data errors. A 100BASE-TX link must not generate more than

1.4 ns of jitter. If the cable meets the impedance requirements for a

100BASE-TX link, jitter should not be a concern.

Crosstalk

Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 100BASE-TX transcei vers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements.

Noise

Noise is caused by either crosstalk or externally induced impulses. Impulse noise may cause data errors if the impulses occur at very speciﬁc times during data transmission. Generally , the user need not be concerned about noise. If noise-related data errors are suspected, it may be necessary to either reroute the cable or eliminate the source of the impulse noise.

3-2 SEHI100TX User’s Guide

Page 21

Cable Speciﬁcations

Propagation Delay

Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the network is 256 bit times (2.56 µs) in one direction (5.12 µs round trip). If the total propagation delay between any two nodes on the network exceeds 2.56 µs, then use bridges or other devices to further segment the network.

Temperature

The attenuation of PVC insulated cable varies signiﬁcantly with temperature. At temperatures greater than 40°C (104°F), Cabletron Systems recommends the use of plenum-rated cables to ensure that cable attenuation remains within speciﬁcation.

3.1.3 Multimode Fiber Optic Cable Speciﬁcations

The SEHI supports the Cabletron Systems EPIM-100FX and EPIM-100FMB. These EPIMs meet IEEE 802.3u standards. When connecting a ﬁber optic segment to the SEHI EPIM-100FX or EPIM-100FMB module, the network must meet the following requirements:

Cable Loss

T est the ﬁber optic cable with a ﬁber optic attenuation test set adjusted for an 850 nm wavelength. This test veriﬁes that the signal loss in a cable is within an acceptable level. The maximum loss for a multimode ﬁber optic cable is 11.0 dB.

Fiber Optic Budget and Propagation Delay

Determine the maximum ﬁber optic cable length by calculating the ﬁber optic budget delay and total network propagation before ﬁber optic cable runs are incorporated in any network design.

Fiber optic budget is the combination of the optical loss due to the ﬁber optic cable, in-line splices, and ﬁber optic connectors.

SEHI100TX User’s Guide 3-3

Page 22

Chapter 3: Installation Requirements and Speciﬁcations

Propagation delay (collision delay) is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network is 256 bit times (2.56 µs) in one direction (5.12 µs round trip). If the total propagation delay between any two nodes on the network exceeds 2.56 µs, then use bridges or other devices to further segment the network.

3.2 NETWORK CABLE LENGTHS

This section details the maximum network cable lengths speciﬁed by the IEEE 802.3u standard for a Class I repeater. As stated previously, the physical size of the network is limited primarily by propagation delay. The round trip delay cannot exceed 512 bit times or 5.12 µs.

NOTE

A stack of ﬁve SEH hubs or four SEH hubs and one SEHI hub is equivalent to one repeater.

A 100BASE-T network might use all UTP links, all ﬁber links or a combination of both. Figure 3-1 shows a simpliﬁed example of a network with one Class I repeater. Link segments A and B represent the longest links in the network. In this case, if both segment A and segment B are UTP, each segment may be up to 100 meters long for a maximum network length of 200 meters. If segment A is UTP and segment B is ﬁber optics, the maximum length of the network is 263 meters (with a maximum UTP segment length of 100 meters). If both segments A and B are multimode ﬁber optics, the maximum length is 274 meters.

If a buffered uplink (EPIM-100FMB) is used, the collision domain is stopped at the EPIM slot. This allows a full length ﬁber optic link of 400 meters to be used as an uplink while maintaining 100-meter UTP and 400-meter ﬁber optic lengths to desktops. So if segment A, shown in Figure 3-1, is UTP and segment B is ﬁber optics, the maximum length of the network is 500 meters. If both segments are ﬁber optics, the maximum length is 800 meters.

3-4 SEHI100TX User’s Guide

Page 23

SEHI100TX-22

Repeater

Network Cable Lengths

DTE

Figure 3-1 Class I Network

DTE

Table 3-1 summarizes the maximum link lengths for each type and combination of cable when used with a Class I repeater.

The maximum length of an individual UTP segment may be no more than 100 meters.

CAUTION

Table 3-1 Maximum Class I Network Cable Length

Number of Repeaters

1 200 m 263 m 274 m 500 m 800 m

UTP

UTP & Multimode Fiber Optics

Multimode Fiber Optics

UTP & Buffered EPIM

Fiber Optics & Buffered EPIM

SEHI100TX User’s Guide 3-5

Page 24

Chapter 3: Installation Requirements and Speciﬁcations

3.3 NETWORK PORT SPECIFICATIONS

The SEHI network ports use shielded RJ45 connectors that support UTP cabling. Figure 3-2 shows the RJ45 pinouts.

1 2 3 4 5 6 7 8

11X

10X

1. Receive + 5. Not Used

2. Receive - 6. Transmit -

3. Transmit + 7. Not Used

4. Not Used 8. Not Used

09162_02

Figure 3-2 RJ45 Network Port Pinouts

3.4 COM PORT REQUIREMENTS

The RJ45 COM port supports access to a Local Management Console. The COM port supports a Digital Equipment Corporation VT320 terminal or PC emulation of the VT320 terminal. Figure 3-3 shows the pinouts for the RJ45 COM port.

1 2 3 4 5 6 7 8

COM

1. Transmit Data

2. Data Carrier Detect

3. Data Set Ready

4. Receive Data

Figure 3-3 RJ45 COM Port Pinouts

5. Signal Ground

6. Data Terminal Ready

7. Request To Send

8. Clear To Send

1511_15

3-6 SEHI100TX User’s Guide

Page 25

Operating Speciﬁcations

3.5 OPERATING SPECIFICATIONS

The operating speciﬁcations for the SEHI100TX-22 are described in this section. Cabletron Systems reserves the right to change these speciﬁcations at any time without notice.

3.5.1 Power Supply Requirements

The SEHI uses a universal power supply. The input requirements are listed in Table 3-2.

Table 3-2 Power Supply Requirements

Line Input Range Volts (V)

100–125 Vac 4.0 A 200–250 Vac 2.0 A

Current Amperes (A)

Frequency Hertz (Hz)

50/60 Hz

3.5.2 Environmental Requirements

This section details the environmental requirements of the SEHI. Operating T emperature: 5°C to 40°C (41°F to 104°F) Storage T emperature: -30°C to 73°C (-22°F to 164°F) Operating Humidity: 15% to 90% (non-condensing)

3.5.3 Agency Approvals

The safety , emission, and immunity approv als for the SEHI are detailed in this section.

Safety

This unit meets the safety requirements of UL 1950, CSA C22.2 No. 950, IEC 950 and EN 60950.

Emissions

This unit meets the emission requirements of FCC Part 15 Class A, EN 55022 Class A and VCCI Class I.

SEHI100TX User’s Guide 3-7

Page 26

Chapter 3: Installation Requirements and Speciﬁcations

Immunity

This unit meets the immunity requirements of EN 50082-1 including IEC 801-2 (ESD), IEC 801-3 (Radiated Susceptibility), and IEC 801-4 (EFT/B).

3.6 PHYSICAL SPECIFICATIONS

This section details the physical speciﬁcations for the SEHI. Dimensions (H x W x D): 2.8 in x 17.0 in x 13.5 in

(7.2 cm x 43.6 cm x 34.6 cm)

Weight: 7 lb (3.15 kg)

3-8 SEHI100TX User’s Guide

Page 27

CHAPTER 4

INSTALLATION

This chapter outlines the procedure for attaching the SEHI to the network as a stackable or standalone device. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before installing the SEHI.

NOTE

A single phase grounded power receptacle that meets the requirements listed in Chapter 3 must be located within seven feet of the installation.

Failure to follow installation instructions may result in an electrical shock hazard.

4.1 UNPACKING THE SEHI

Unpack the SEHI as follows:

1. Remove the shipping material covering the SEHI in the shipping box.

2. Carefully remove the SEHI from the shipping box and set it aside to

prevent damage.

3. Visually inspect the SEHI. If there are any signs of damage, contact

Cabletron Systems Technical Support immediately. Refer to Section 1.3 for instructions on getting help.

4. Read the SEHI Release Notes included in the shipping box.

NOTE

Cabletron Systems includes a 3 1/2-inch disk with the SEHI100TX-22 that contains a backup copy of the FLASH Firmware Image File. Do wnload the ﬁle to the SEHI100TX-22 if the existing image becomes corrupted. Ref er to Appendix B f or detailed download instructions.

SEHI100TX User’s Guide 4-1

Page 28

Chapter 4: Installation

4.2 PRE-INSTALLATION CHECKOUT

The SEHI is equipped with an NVRAM reset switch (Figure 4-1) located behind the grillwork on the side of the hub. Ensure that this switch is in the DOWN position by looking in through the grillwork on the right side of the hub. If the switch is UP, move it into the DOWN position with a non-metallic tool. Do not remove the chassis cover to perform this operation. Leaving the switch in the UP position results in user-installed parameters such as IP address and Community Names being cleared from NVRAM whenever the SEHI loses power and/or is reset. Refer to Section 6.4 for detailed instructions on setting the NVRAM switch.

Rear of Chassis

NVRAM Switch located behind grating

1511_02

Figure 4-1 NVRAM Switch Location

The SEHI may be installed on a tabletop or shelf, or in a 19-inch rack, and conﬁgured as a standalone or stacked hub.

Refer to Section 4.3 for information concerning a tabletop or shelf installation. Section 4.4 describes the rackmount installation.

4-2 SEHI100TX User’s Guide

Page 29

Tabletop or Shelf Installation

4.3 TABLETOP OR SHELF INSTALLATION

This section provides guidelines for installation on a tabletop or shelf. Tabletop and shelf installations must be within reach of the network

cabling and meet the requirements listed below:

• In a shelf installation, the shelf must be able to support 30 pounds of

static weight for each device in the stack.

• Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at

the installation site with ﬂuctuations of less than 10°C per hour.

The SEHI must be located within seven feet of its power source and with an unrestricted free surface area as shown in Figure 4-2.

In order to allow for proper cooling, there must be a two-inch clearance on either side and the back of the unit.

CAUTION

21 IN.

18 IN.

6 IN.

HubSTACK SEHI

100TX-

100BASE-TX HUB

PWR CPU CLN

WITH

LANVIEW®

RCV LNK

22 21 20 19 18 17 16 15 14 13 12

RCV LNK

11 10 9 8 7 6 5 4 3 2 1

22X 21X 20X 19X 18X 17X

E 1

11X 10X 9X 8X 7X 6X

16X 15X 14X 13X 12X

5X 4X 3X 2X 1X

EPIM 1

7 FT.

1511_03

Figure 4-2 Tabletop or Shelf Installation

Proceed to Section 4.5, Powering Up and Stacking the SEHI.

4.4 RACKMOUNT INSTALLATION

To install the SEHI in a 19-inch rack, Cabletron Systems provides a kit with the SEHI that includes rackmount brackets, mounting screws, and a strain-relief bracket for cable management.

SEHI100TX User’s Guide 4-3

Page 30

Chapter 4: Installation

Rack mounting the SEHI involves the following:

• Attaching the strain-relief bracket

• Rack mounting the SEHI

• Stacking the SEHI when applicable

Before installing the SEHI into a rack, ensure that the rack can

WARNING

support the device(s) without compromising the stability of the rack. Otherwise, personal injury and/or equipment damage may result.

Attaching the Strain-Relief Bracket

Attach the strain-relief bracket to the front of the SEHI as follows:

1. Locate the strain-relief bracket and four 8-32 x 3/8-inch pan-head screws from the rackmount kit.

Do NOT attempt to attach the strain-relief bracket with screws other than the 8-32 x 3/8-inch screws included with the SEHI. Use of longer screws may damage the unit or cause electrical shock.

2. Attach the strain-relief bracket to the bottom of the SEHI (Figure 4-3).

Screws (4)

Strain-Relief Bracket

EPIM 1

5X 4X 3X 2X 1X

16X 15X 14X 13X 12X

Figure 4-3 Attaching the Strain Relief Bracket

4-4 SEHI100TX User’s Guide

11X 10X 9X 8X 7X 6X

1 E

22X 21X 20X 19X 18X 17X

2 E

11 10 9 8 7 6 5 4 3 2 1

CLN

LNK RCV

CPU PWR

22 21 20 19 18 17 16 15 14 13 12

LNK RCV

WITH

LANVIEW®

100TX-

100BASE-TX HUB

1511_19

SEHI HubSTACK

Page 31

Rackmount Installation

Rack Mounting the SEHI

Refer to Figure 4-4 and proceed as follows to install the SEHI into a 19-inch rack.

1. Remove the four cover screws (two from each side) located along the

front edges of each side of the SEHI.

Do not remove the cover from the SEHI100TX-22. Do not remove any other screws from the unit.

2. Using the four 6-32 x 3/8-inch replacement flathead cover screws

provided in the rackmount kit, attach the rack mounting brackets to each side of the SEHI.

Rack Mounting

Brackets (2)

HubSTACK 100BASE-TX HUB WITH LANVIEW® SEHI100TX-22

PWR CPU CLN

RCV LNK

22 21 20 19 18 17 16 15 14 13 12

RCV LNK

11 10 9 8 7 6 5 4 3 2 1

22X 21X 20X 19X 18X 17X

E 1

11X 10X 9X 8X 7X 6X

16X 15X 14X 13X 12X

5X 4X 3X 2X 1X

EPIM 1

Screws (4)

1511_05

Figure 4-4 Installing the Rack Mounting Brackets

SEHI100TX User’s Guide 4-5

Page 32

Chapter 4: Installation

3. Ensure that the rack used will support the unit, and that the rack will remain stable with the unit installed in it. Support the SEHI securely from underneath, and align the mounting brackets of the SEHI chassis with the screw holes in the equipment rack as shown in Figure 4-5. Fasten the SEHI to the equipment rack securely.

19-Inch Rack

HubSTACK SEHI

100TX-

100BASE-TX HUB

WITH

PWR CPU CLN

LANVIEW®

RCV LNK

22 21 20 19 18 17 16 15 14 13 12

RCV LNK

11 10 9 8 7 6 5 4 3 2 1

22X 21X 20X 19X 18X 17X

E 1

11X 10X 9X 8X 7X 6X

16X 15X 14X 13X 12X

5X 4X 3X 2X 1X

EPIM 1

Screws (4)

Figure 4-5 Installing the SEHI in the Rack

The cooling fans at the rear panel of the SEHI must have

CAUTION

rear) for unrestricted air flow. The temperature for the selected

adequate clearance (two inches on either side and in the

location must be maintained between 5°C and 40°C, and ﬂuctuate less than 10°C per hour.

Proceed to Section 4.5, Powering Up and Stacking the SEHI.

1511_06

4-6 SEHI100TX User’s Guide

Page 33

Powering Up and Stacking the SEHI

4.5 POWERING UP AND STACKING THE SEHI

The following section details the procedures that must be followed to power up and interconnect stacked hubs.

Failure to follow this procedure may result in damage to the equipment.

CAUTION

If you are using an intelligent hub (SEHI) to manage the stack, you must locate the SEHI at the bottom of the stack.

CAUTION

The SEHI must be completely powered up and initialized before powering up and interconnecting the rest of the stack.

NOTE

The SEH and the SEHI have universal power supplies that allow connection to power sources from 100 Vac to 125 Vac @ 4.0 A or 200 Vac to 250 Vac @ 2.0 A, 50/60 Hz.

1. Power up the SEHI by plugging the power cord into the back panel of

the SEHI and plugging the other end into a grounded receptacle.

NOTE

Locate the SEHI at the bottom of the stack. For management purposes, stacked hubs are always

numbered from 1 to 5 starting at the bottom.

2. Verify that the PWR LED is on, indicating that the SEHI is receiving

power. After the SEHI runs a self test and completes the boot process successfully, the CPU LED blinks green indicating normal operation. If the LED remains red, the processor is faulty; contact Cabletron Systems Technical Support. Do not proceed with the following steps until the CPU LED is a steady blinking green.

Do NOT power up or interconnect any other hubs in the stack until the SEHI has successfully completed the boot process.

CAUTION

SEHI100TX User’s Guide 4-7

Page 34

Chapter 4: Installation

3. Power up the SEH above the SEHI in the stack by plugging the power cord into the back panel of the SEH and plugging the other end into a grounded receptacle.

4. Verify that the PWR LED is on, indicating that the SEH is receiving power.

Do NOT connect the interconnect cable between the SEH and the SEHI before powering up the SEH. Otherwise damage to

CAUTION

the SEH may result.

5. Attach the HubSTACK Interconnect cable provided with the SEH to the “IN” port on the rear panel of the SEH as shown in Figure 4-6.

6. Attach the other end of the interconnect cable to the “OUT” port on the rear panel of the hub at the bottom of the stack.

Do not leave an interconnect cable connected at only one end during network operation. Corrupted data may result.

CAUTION

7. Repeat steps 3 through 6 until all SEH hubs are connected.

REAR VIEW SEHI Managing 4 SEH Non-Intelligent Hubs

SEH100TX-22 100BASE-TX HUB WITH LANVIEW®

SEHI100TX-22 100BASE-TX HUB WITH LANVIEW®

Figure 4-6 Stacking the SEHI

4-8 SEHI100TX User’s Guide

OUT

SEH100TX INTERCONNECT

OUT

SEH100TX INTERCONNECT

OUT

SEH100TX INTERCONNECT

OUT

SEH100TX INTERCONNECT

OUT

SEHI100TX INTERCONNECT

1511_07

100BASE-TX HubSTACK Interconnect Cable

Page 35

Installing an EPIM

4.6 INSTALLING AN EPIM

This section contains procedures on how to install the EPIM-100TX, EPIM-100FX, or the EPIM-100FMB to upgrade or change the capabilities of your SEHI. After installing a new EPIM, refer to the appropriate EPIM section in Appendix A to verify proper operation.

Observe all static precautions while handling an EPIM.

CAUTION

Install an EPIM-100TX, EPIM-100FX, or an EPIM-100FMB as follows:

When removing an EPIM, pull the module straight out to prevent damage to the connector.

CAUTION

1. Remove the coverplate or the existing EPIM (whichever applies).

2. Slide the new EPIM into place, making sure that the connectors on the

rear of the EPIM align correctly and firmly with the connector inside the SEHI. Refer to Figure 4-7.

3. Install the mounting screw.

EPIM 1

LNK

EPIM-100TX

1511_09

Figure 4-7 Installing an EPIM

SEHI100TX User’s Guide 4-9

Page 36

Chapter 4: Installation

4-10 SEHI100TX User’s Guide

Page 37

CHAPTER 5

CONNECTING TO THE NETWORK

This chapter outlines the procedure for connecting the SEHI to a network. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before installing the SEHI.

5.1 CONNECTING THE SEHI TO THE NETWORK

The procedure for connecting network segments to the SEHI varies depending on the media and ports being connected. Refer to the following list and perform the procedure described in the subsections that apply to connecting the SEHI to a network:

• Network Ports Section 5.1.1

• EPIM-100TX Section 5.1.2

• EPIM-100FX or EPIM-100FMB Section 5.1.3 Prior to connecting the network cabling, check the connectors for the

proper pinouts as shown in Chapter 3.

5.1.1 Connecting to Network Ports

Attach UTP segments to the RJ45 network ports on the front panel of the SEHI. Each RJ45 network port on the SEHI incorporates a polarity detection and correction feature. The polarity detection and correction feature allows the SEHI to pass data regardless of the polarity of the twisted pair segment’s receive link. Operating in this condition is not recommended; the segment should be removed from the network and wired correctly by a technician.

Connect the twisted pair segments to the SEHI as follows:

1. Plug the RJ45 connector from each twisted pair segment into the

desired network port on the SEHI. See Figure 5-1.

2. Plug the RJ45 connector at the other end of the twisted pair segment

into the other device as appropriate.

SEHI100TX User’s Guide 5-1

Page 38

Chapter 5: Connecting to the Network

15X

16X

LNK

EPIM-100TX

EPIM 1

1511_10

12X

13X

14X

Figure 5-1 SEHI Network Ports

3. Check that the applicable LNK LED for the port is on. If the LED is off, perform each of the following steps until it is on:

a. Check that the 100BASE-TX device at the other end of the twisted

pair segment is powered up.

b. Verify that the RJ45 connector on the twisted pair segment has the

proper pinouts. c. Check the cable for continuity. d. Check that the twisted pair connection meets the cable

specifications outlined in Section 3.1.2.

If a link is not established, contact Cabletron Systems Technical Support.

5.1.2 Connecting to an EPIM-100TX

The EPIM-100TX is often used to provide a connection between the SEHI and a bridge, router, or switch. Normally, in this conﬁguration, a “straight-through” cable is used and the EPIM crossover switch shown in Figure 5-2 is set to “not crossed over.”

The EPIM-100TX is also used to provide another RJ45 port to connect to a UTP segment. Before connecting a segment to the EPIM-100TX, check each end of the segment to determine if the wires have been crossed over for the proper connection. If the wires do not cross over , use the switch on the EPIM-100TX to internally cross over the RJ45 port. Refer to Figure 5-2 to properly set the EPIM-100TX crossover switch.

5-2 SEHI100TX User’s Guide

Page 39

Position X (crossed over)

Connecting the SEHI to the Network

1. RX+

2. RX-

3. TX+

4. NC

5. NC

6. TX-

7. NC

8. NC Position =

(not crossed over)

1. TX+

2. TX-

3. RX+

4. NC

Figure 5-2 EPIM-100TX Crossover Switch

5. NC

6. RX-

7. NC

8. NC

1511_11

Connect an EPIM-100TX to a twisted pair segment as follows:

1. Connect the twisted pair segment to the module by plugging the RJ45 connector on the twisted pair segment into the RJ45 port on the module. See Figure 5-2.

2. Plug the RJ45 connector at the other end of the twisted pair segment into the other device as appropriate.

3. Check that the LNK LED on the EPIM-100TX is on. If the LED is off, perform each of the following steps until it is on:

a. Check that the 100BASE-TX device at the other end of the twisted

pair segment is powered up.

b. Verify that the RJ45 connector on the twisted pair segment has the

proper pinouts. c. Check the cable for continuity. d. Check that the twisted pair connection meets the cable

specifications outlined in Section 3.1.2. e. Check that the crossover switch is in the correct position.

If a link is not established, contact Cabletron Systems Technical Support.

SEHI100TX User’s Guide 5-3

Page 40

Chapter 5: Connecting to the Network

5.1.3 Connecting to an EPIM-100FX or EPIM-100FMB

The EPIM-100FX and EPIM-100FMB have an SC style network port (see Figure 5-3). Cabletron Systems supplies ﬁber optic cables using SC connectors that are keyed to ensure proper crossover of the transmit and receive ﬁbers.

NOTE

maintained between devices so that the transmit port of one device is connected to the receive port of the other device and vice versa.

Use the following steps to connect a ﬁber segment to the SEHI:

1. Remove the protective plastic covers from the fiber optic ports on the module port and from the ends of the connectors.

An odd number of crossovers (preferably one) must be

Do not touch the ends of the ﬁber optic strands, and do not let

CAUTION

Contamination of the ends causes problems in data

the ends come in contact with dust, dirt, or other contaminants.

transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint free cloth.

2. Insert one end of the SC connector into the EPIM-100FX or EPIM-100FMB on the SEHI. See Figure 5-3.

12X

13X

14X

1511_17

15X

16X

EPIM 1

EPIM-

LNK

100FX

Figure 5-3 EPIM-100FX or EPIM-100FMB Port

5-4 SEHI100TX User’s Guide

Page 41

Testing the Installation

3. At the other end of the fiber optic cable, attach the SC connector to the

other device.

4. Check that the EPIM-100FX (or EPIM-100FMB) LNK LED is on. If

the LED is off, perform the following steps until it is on: a. Check that the power is turned on for the device at the other end of

the link.

b. Verify that there is a proper crossover of fiber optic strands

between the applicable port on the SEHI and the fiber optic device at the other end of the fiber optic link segment.

c. Verify that the fiber optic connection meets the dB loss

specifications outlined in Section 3.1.3.

If a link is not established, contact Cabletron Systems Technical Support.

5.2 TESTING THE INSTALLATION

The SEHI00TX-22 is now ready for operation. Before placing the network into service, test that all stations can be addressed and that the SEHI and all stations are indicating normal operation. Ensure that the networking software is conﬁgured properly to match the installed network. If there are any errors or abnormal operation, proceed to Chapter 6, Troubleshooting.

SEHI100TX User’s Guide 5-5

Page 42

Chapter 5: Connecting to the Network

5-6 SEHI100TX User’s Guide

Page 43

CHAPTER 6

TROUBLESHOOTING

This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems. It also describes how to reset the SEHI and how to reset the NVRAM switch.

6.1 INSTALLATION T EST

After connecting the SEHI to the network, verify that packets pass between all Ethernet devices connected to the SEHI and any other de vices connected to the network. If there is a problem with any of the attached devices, check the link as follows:

1. Check that the LNK LED, if applicable, for the port is on. If the LED

is off, perform each of the following steps until the LED is on: a. Check that the 100BASE-TX device at the other end of the twisted

pair segment is powered up.

b. Verify that the connector on the twisted pair segment has the

proper pinouts. Refer to Chapter 3 for the pin assignments for twisted pair connectors.

c. For the EPIM-100FX or EPIM-100FMB, check that the TX and

RX strands are properly connected.

d. Check the cable for continuity. Several tools are available for this

test, depending on the media used.

e. Check that the twisted pair segments or ﬁber optic segments meet

cable speciﬁcations as described in Chapter 3.

SEHI100TX User’s Guide 6-1

Page 44

Chapter 6: Troubleshooting

2. If the remote station is ready and the LNK LED is on, but no data passes through the port, one of two conditions may exist:

• Network management has disabled the port. Correct this condition

by enabling the port through network management.

• The port is segmented either because the collision detector was on

for more than 110 µs or the SEHI detected more than 32 consecutive collisions on the attached segment. The affected port remains segmented until a good packet is transmitted/received without collisions.

If the LNK LED is still not on, contact Cabletron Systems Technical Support. Refer to Section 1.3 for instructions about getting help.

6.2 USING LANVIEW

The SEHI incorporates the Cabletron Systems LANVIEW status monitoring and diagnostics system. LANVIEW LEDs help diagnose problems such as power failure or cable fault. The SEHI includes the following LANVIEW LEDs:

• PWR, for power status

• CPU, for board status

• RCV (Receive), LNK (Link), and CLN (Collision) for Ethernet status

Figure 6-1 provides a quick reference chart of LED locations and deﬁnitions. This chapter also includes a detailed description of each LED.

6-2 SEHI100TX User’s Guide

Page 45

Using LANVIEW

HubSTACK 100BASE-TX HUB SEHI

100TX

-22

RESET

COM

LED NAME

PWR (Power)

CPU (Central Processing Unit)

CLN (Collision)

RCV (Receive)

LNK (Link)

Figure 6-1 LANVIEW LEDs

WITH

LANVIEW®

RCV LNK

PWR

CPU CLN

RCV LNK

11 10 9 8 7 6 5 4 3 2 1

LED COLOR

Off Green (Solid)

Off Green (Flashing) Green (Blinking) Red (Solid)

Red (Flashing)

Yellow (Flashing) Off

Green Off

22 21 20 19 18 17 16 15 14 13 12

DEFINITION

No power Power

CPU in BOOT process CPU initializing CPU functioning CPU not functioning

Collision

SEHI is receiving data No activity

Link established No link

22X

11X

1511_13

NOTE

Blinking indicates a steady LED pulse.

PWR

When this green LED is on, it indicates that the SEHI is receiving power. If this LED is off, it indicates a loss of input power. Check that the power cord is properly plugged into the SEHI and the ac input power source (circuit breaker, fuse, etc.). If the proper source power is present, the problem could be with the SEHI.

SEHI100TX User’s Guide 6-3

Flashing indicates an irregular LED pulse.

Page 46

Chapter 6: Troubleshooting

CPU

This LED alternates from red to green to during power up. After the boot is complete, the LED blinks green. A blinking green LED indicates normal operation. A red LED indicates a faulty processor.

CLN

When this red LED ﬂashes, it indicates that a collision has occurred on one of the ports.

RCV

When a yellow RCV LED ﬂashes, it indicates that the SEHI is receiving data packets from the associated port segment. Each SEHI port has a corresponding RCV LED:

• Network Ports: RCV LEDs 1-22

• EPIM 1: RCV LED E

• Management: RCV LED A

LNK

When a green LNK LED is on, it indicates an established link between the associated port and the device at the other end of the segment. The LNK LED remains on as long as a link is maintained. Each SEHI Network Port (ports 1 through 22) has a corresponding LNK LED.

6.3 USING THE RESET BUTTON

The SEHI incorporates a recessed RESET button. See Figure 6-1. The RESET button initializes the SEHI processor. This button does NOT initialize Non-Volatile Random Access Memory (NVRAM), the nonvolatile random access memory where the SEHI stores network management parameters.

To use the RESET button, use a pen or pencil to press the button. When this is done, the SEHI initializes itself.

NOTE

6-4 SEHI100TX User’s Guide

All modules in a stacked conﬁguration reset when the SEHI is reset.

Page 47

Setting the NVRAM Switch

6.4 SETTING THE NVRAM SWITCH

To prevent the possibility of electrical shoc k, do not remov e the chassis cover to access the NVRAM switch, and use only a non-metallic tool when moving the NVRAM switch.

The SEHI uses NVRAM to store user-entered parameters such as IP address and Community Names. To reset these parameters to the factory defaults, refer to Figure 6-2 and perform the following steps:

1. With the power ON and using a non-metallic tool, move the NVRAM

switch to the UP position.

2. Press the RESET switch located on the front panel.

3. Wait until the unit boots (approximately 12 seconds).

4. Return the NVRAM switch to the DOWN position.

Failure to return the NVRAM switch to the DOWN position will result in loss of user-entered parameters upon power shutdown

CAUTION

and restart. The SEHI will clear NVRAM if the unit is restarted with the switch in the UP position.

Rear of Chassis

NVRAM Switch located behind grating

1511_02

Figure 6-2 NVRAM Switch Location

SEHI100TX User’s Guide 6-5

Page 48

Chapter 6: Troubleshooting

6-6 SEHI100TX User’s Guide

Page 49

CHAPTER 7

LOCAL MANAGEMENT

This chapter explains how to set up a management terminal to access the SEHI Local Management. It also explains how to use the Local Management screens and commands.

Local Management supplies the tools to manage the SEHI and all of its attached segments. It allows the user to perform the following tasks:

• Assign an IP address and subnet mask.

• Select a default gateway.

• Control access to the SEHI through the community names established

in the Community Name Table.

• Designate which Network Management Workstations receive trap

messages from the device.

• Navigate through the Management Information Base (MIB) and

manage the objects within it from a remote location. Given the appropriate security level, the MIB is accessible from the SEHI through SNMP Tools.

Local Management also allows the user to manage each non-intelligent stackable hub attached to the SEHI, and provides a Statistics screen to view error, collision, and trafﬁc statistics for the entire stack, individual module, or individual port.

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Chapter 7: Local Management

7.1 KEYBOARD CONVENTIONS

All key names appear in this manual as capital letters. For example, the enter (return) key appears as ENTER and the space bar appears as SPACE bar. Table 7-1 explains the keyboard conventions used in this manual as well as the key functions.

Table 7-1 Keyboard Conventions

Key Function

RETURN Key and ENTER Key These are selection keys that perform

the same Local Management function. For example, “Press ENTER” means press either ENTER or RETURN, unless this manual speciﬁcally instructs you otherwise.

SPACE Bar and BACKSPACE Key These keys cycle through selections

in some Local Management ﬁelds. Use the SPACE bar to cycle forward through selections and use BACKSPACE to cycle backward through selections.

Arrow Keys These are navigation keys. Use the

UP-ARROW, DOWN-ARROW, LEFT-ARROW, and RIGHT-ARROW keys to move the screen cursor. For example, “Use the arrow keys” means to press whichever arrow key moves the cursor to the desired ﬁeld on the Local Management screen.

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Management Terminal Setup

7.2 MANAGEMENT TERMINAL SETUP

Use one of the following systems to access Local Management:

• A Digital Equipment Corporation VT series terminal

• A VT type terminal running emulation programs for the Digital

Equipment Corporation VT series

• An IBM or compatible PC running a VT series emulation software

package

An RJ45 console cable is required to attach the management terminal to the SEHI. The console cable is included with the SEHI in a package that contains the following:

• UTP console cable with RJ45 connectors on each end

• Adapters for DB9 or DB25 connections

• Instruction sheet The following sections explain ho w to attach the console cable and set up

the management terminal. Refer to the RJ45 Cable Kit Instruction Sheet for adapter pinouts and additional information.

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Chapter 7: Local Management

Console Cable Conﬁguration

Use the RJ45 Cable Kit provided with the SEHI to attach the management terminal to the SEHI COM port as shown in Figure 7-1.

Connect the console cable to the SEHI as follows:

1. Attach the male RJ45 connector to the COM port of the SEHI.

2. Attach the female end (25-pin or 9-pin, as applicable) to the COM port on the terminal.

HubSTACK 100BASE-TX HUB WITH LANVIEW® SEHI100TX-22

COM

Console Cable

COM Port

Figure 7-1 Management Terminal Connection

COM RJ45 Port

Management Terminal

1511_14

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Management Terminal Setup

Management Terminal Setup Parameters

Table 7-2 lists the setup parameters for the local management terminal. If the terminal is a Digital Equipment Corporation VT320 terminal, press F3 to access the Setup Directory. If the local management terminal uses terminal emulation of the VT320, refer to the equipment user manual for setup procedures.

Table 7-2 Terminal Setup Parameters

Menu Function Selection

Columns 80 Columns

Display Setup:

General Setup:

Communications Setup:

Keyboard Setup:

Controls Interpret Controls Auto Wrap No Auto Wrap Test Cursor Cursor Mode 7 Bit Control Cursor Keys Normal Cursor Keys Transmit Transmit = 9600 Receive Receive = Transmit XOFF any option Bits, Parity 8 Bits, No Parity Stop Bit 1 Stop Bit Local Echo No Local Echo

Port Transmit any option

Auto Answerback No Auto Answerback Auto Repeat any option Keyclick any option Margin Bell Margin Bell Warning Bell Warning Bell Auto Answerback No Auto Answerback

DEC-423,

Data Leads Only

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Chapter 7: Local Management

7.3 ACCESSING LOCAL MANAGEMENT

After conﬁguring the local management terminal and properly attaching the cables to the SEHI, access the Local Management interface.

Use the following steps to access Local Management:

1. Power up the terminal. The Password screen (Figure 7-2) appears.

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

Cabletron Systems Incorporated 35 Industrial Way, P.O. Box 5005

Rochester, NH 03867-0505 U.S.A.

(603) 332-9400

SEHI F/W Version: X.XX.XX Boot Prom Version: X.XX.XX SEHI Board Version: X.X

Enter User Password:

1490_21

Figure 7-2 Password Screen

2. Enter the Password. The factory default password for Super-User access is “public” or press ENTER.

NOTE

7-6 SEHI100TX User’s Guide

The password is one of the community names speciﬁed in the Community Name Table. Access to certain Local Management capabilities depends on the degree of access accorded that community name. Refer to Section 7.5 for more details about community names.

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Accessing Local Management

3. Press ENTER.

• If the password entry is inv alid, the cursor returns to the beginning of the password entry ﬁeld.

• If the password is valid, the associated access privilege appears brieﬂy, then the Feature Selection screen (Figure 7-3) appears.

NOTE

If the terminal keyboard is not used for 15 minutes, the Local Management session ends and the screen defaults to the Password screen.

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Chapter 7: Local Management

7.4 THE FEATURE SELECTION SCREEN

The Feature Selection screen is the main menu screen for SEHI Local Management. There are ﬁve screen options in the Feature Selection screen: Community Name Table, IP Address Assignment, Component Trap Table, SNMP Tool Support, and Device Statistics. Use the arrow keys to highlight an option, then press ENTER (or press the corresponding Function key). The selected screen appears.

To exit your Local Management session, use the arrow keys to highlight the EXIT LIM SERVICE command, then press ENTER.

SEHI LOCAL MANAGEMENT

Cabletron Systems Incorporated

P.O. Box 5005 Rochester, NH 03867-0505 U.S.A.

(603) 332-9400

FEATURE SELECTION

F6 COMMUNITY NAME TABLE

F7 IP ADDRESS ASSIGNMENT

F8 COMPONENT TRAP TABLE

F9 SNMP TOOL SUPPORT

DEVICE STATISTICS

EXIT LIM SERVICE

1490_22

Figure 7-3 Feature Selection Screen

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The Community Name Table Screen

7.5 THE COMMUNITY NAME TABLE SCREEN

To access the Community Name Table screen from the Feature Selection screen, use the arrow keys to highlight the Community Name Table option, then press ENTER or F6. The Community Name Table screen shown in Figure 7-4 appears.

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

COMMUNITY NAME TABLE

COMMUNITY NAME ACCESS

PUBLIC

SAVE IP TABLE TRAP TABLE SNMP TOOLS RETURN

F6 F7 F8 F9

BASIC-READ

READ-ONLY

READ-WRITE

SUPER-USER

1490_23

Figure 7-4 Community Name Table Screen

Community names are set through the Community Name Table option. Community names are passwords to Local Management and are agents of security control to the SEHI. SEHI access is controlled by establishing up to four different levels of security authorization: Basic-Read, Read-Only, Read-Write, and Super-User.

With Super-User access, the user changes the existing passwords by changing the community names. Only the community name assigned Super-User access has full management privileges.

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The following sections explain each ﬁeld on the Community Name Table screen and provides instructions on how to change them.

COMMUNITY NAME

Displays the user-deﬁned name through which a user can access Local Management for the SEHI. Any community name assigned here acts as a password to Local Management.

ACCESS

Indicates the access status accorded each community name. The following conditions are possible:

Basic-Read This allows Read-Only access to Local

Management, but excludes read privileges to the Component Trap screen.

Read-Only This allows Read-Only access to Local

Management, but excludes access to security protected fields of the upper levels of authorization (Read-Write or Super-User).

Read-Write This allows the user to read and write to Local

Management fields, excluding IP Address, Subnet Mask, and Community Names.

Super-User This access privilege gives the user read and

write access to Local Management. Super-User allows read and write access to all modifiable parameters including Community Names, IP Addresses, Traps, and SNMP Objects.

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The Community Name Table Screen

7.5.1 Editing the Community Name Field

The password used to access Local Management at the Password screen must have Super-User privileges for the edits to take effect. If a password is entered with Basic-Read, Read-Only, or Read-Write privileges, Local Management displays the message “AUTHORIZATION PROHIBITS ACCESS”, and does not include editing capabilities.

Use the following steps to edit the Community Name ﬁeld:

1. Use the arrow keys to highlight the Community Name field adjacent

to the desired access level.

2. Enter the community name (maximum of 32 characters) into the field.

3. Press ENTER.

4. Repeat steps 1 through 3 for editing any of the other community names.

5. Use the arrow keys to highlight the SAVE command at the bottom of the screen, then press ENTER or F6. The “SAVED OK” message appears indicating that the edits have been saved to memory.

NOTE

The ﬁrst time a user attempts to exit the screen without saving the changes, a “NOT SAVED?” message is displayed. The edits are lost if the user proceeds to exit without saving the changes.

6. To exit the screen, press the appropriate Function key or use the arrow keys to highlight the RETURN command.

7. Press ENTER. The Feature Selection screen appears.

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Chapter 7: Local Management

7.6 THE CONFIGURATION SCREEN

T o access the Conﬁguration screen from the Feature Selection screen, use the arrow keys to highlight the IP Address Assignment option, then press ENTER or F7. The screen shown in Figure 7-5 appears.

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

CONFIGURATION

I/F IP Address SubNET Mask MAC Address

1 000.000.000.000 000.000.000.000 00-00-1d-05-dc-36

Default Gateway: 0.0.0.0

Serial Port 1 Application: CONSOLE Baud Rate: 9600 --ACTIVE--

Port Enable Override: OVERRIDE DISABLED

SAVE COMMUNITY NAMES TRAP TABLE SNMP TOOLS RETURN

F6 F7 F8 F9

1490_24

Figure 7-5 Conﬁguration Screen

Assign the IP Address, Subnet Mask, and Default Gateway through the SEHI Conﬁguration screen. Use the Port Enable Override option to enable all device ports in the stack. This option ov errides the Port Disable setting in the Statistics screen.

The following sections explain each ﬁeld on the Conﬁguration screen and instructions on how to change them.

I/F

The number of the interface corresponding to the channels over which packets with that IP Address pass. On the SEHI, this value is always 1.

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The Conﬁguration Screen

IP Address

Displays the IP address of the SEHI.

SubNET Mask

Displays the subnet mask for the SEHI. A subnet mask is a 32-bit quantity which “masks out” the network bits of the IP address. This is done by setting the bits in the mask to 1 when the network treats the corresponding bits in the IP address as part of the network or subnetwork address, or to 0 if the corresponding bit identiﬁes the host.

MAC Address

Displays the physical address associated with the interface.

Default Gateway

Displays the default gateway for the SEHI. This ﬁeld is not deﬁned until an appropriate value is entered. The default gateway identiﬁes the default gateway device that will forward packets to other IP subnetworks.

Serial Port 1 Application

Displays the port’s application setting as CONSOLE.

Baud Rate

Displays the Baud Rate setting of the device attached to the SEHI through the serial port. The setting for the serial port is 9600.

Port Enable Override

This command lets the user override the Disable Port settings in the Device Statistics screen to enable all ports in the stack.

7.6.1 Setting the IP Address

Use the following steps to set the IP address:

1. Use the arrow keys to highlight the IP Address field.

2. Enter the IP address into this field. The format for this entry is XXX.XXX.XXX.XXX, with values for XXX being from 0 to 255. The screen beeps if non-numerics or adjacent dots are entered. If the entry does not have three dots it will be rejected.

3. Press ENTER. The IP address appears and the natural subnet mask for the user is generated and also appears.

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4. Use the arrow keys to highlight the SAVE option, then press ENTER

or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory.

NOTE

The ﬁrst time an attempt is made to exit the screen without saving the changes, a “NOT SAVED?” message is displayed. The edits are lost if the user proceeds to exit without saving the changes.

7.6.2 Setting the Subnet Mask

NOTE

The subnet mask deﬁnes how the SEHI treats SNMP Trap IP destination addresses in its Trap Table.

• Set the subnet mask when workstations in the Trap Table reside on a

• Use the subnet mask factory default setting of 0.0.0.0 when all trap

Use the following steps to set the subnet mask:

Consult the Network Administrator prior to setting the Subnet Mask.

different subnet (i.e., across a gateway or router), and these workstations are to receive SNMP traps.

designated workstations are on the SEHI subnet.

1. Use the arrow keys to highlight the SubNET Mask field.

2. Enter the subnet mask into this field. The format for this entry is XXX.XXX.XXX.XXX with values for XXX being from 0 to 255.

3. Press ENTER.

4. Use the arrow keys to highlight the SAVE option, then press ENTER or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory.

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The Conﬁguration Screen

NOTE

The ﬁrst time an attempt is made to exit the screen without saving the changes, a “NOT SAVED?” message is displayed. The edits are lost if the user proceeds to exit without saving the changes.

7.6.3 Setting the Default Gateway

The Default Gateway ﬁeld allows the user to describe the router through which the SEHI will be forwarding IP packets.

Use the following steps to set the Default Gateway:

1. Use the arrow keys to highlight the Default Gateway field.

2. Enter the gateway’s default mask in this field. The format for this entry

is XXX.XXX.XXX.XXX with values for XXX being from 0 to 255.

3. Press ENTER. If your entry is accepted as a valid default gateway,

“OK” appears to the right of the field.

4. Use the arrow keys to highlight the SAVE option, then press ENTER

or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory.

7.6.4 Using the Port Enable Override

Use the following steps to override the Disable Port settings:

1. Use the arrow keys to highlight the Port Enable Override field.

2. Press ENTER to toggle from the default setting of “OVERRIDE

DISABLED” to “OVERRIDE ENABLED”.

3. The adjacent ﬁeld displays “Y/N”. Enter Y to continue enabling all of

the ports, or N to discontinue the port enable override. The message “PORT ENABLED” appears after Y is entered.

7.6.5 Exiting the Conﬁguration Screen

Use the following steps to exit the Conﬁguration screen and return to the Feature Selection screen:

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Chapter 7: Local Management

1. Press the appropriate Function key. To return to the Feature Selection screen, use the arrow keys to highlight the RETURN command.

2. Press ENTER. The Feature Selection screen appears.

7.7 THE TRAP TABLE SCREEN

Access the Trap Table screen from the Feature Selection screen using the arrow keys to highlight the Component Trap Table option, then press ENTER or F8. The screen shown in Figure 7-6 appears.

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

TRAP TABLE

SNMP Community Name <CR>

SAVE COMMUNITY NAMES IP TABLE SNMP TOOLS RETURN F6 F7 F8 F9

Traps

N N N N N N N N

IP Address

0.0.0.0

1490_25

Figure 7-6 Trap Table Screen

The Trap Table deﬁnes the management stations that receive SNMP Traps for alarm/event notiﬁcation. The following sections explain each ﬁeld on the Trap Table screen and provide instructions on how to change them.

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The T rap Tab le Screen

SNMP Community Name

Displays the community name included in the trap message sent to the Network Management Station with the associated IP address.

Traps

Enables transmission of the traps to the network management station with the associated IP address.

Trap IP Address

Indicates the IP address of the workstation to receive trap alarms from the SEHI.

7.7.1 Conﬁguring the Trap T able

Use the following steps to conﬁgure the Trap Table:

1. Use the arrow keys to highlight the SNMP Community Name field,

then enter the community name.

2. Press ENTER.

3. Use the arrow keys to highlight the Traps field and enter Y to send

alarms from the SEHI to the workstation, or N to prevent alarms from being sent.

4. Press ENTER.

5. Use the arrow keys to highlight the appropriate Trap IP Address

field.

6. Enter the IP address of the workstation that you want to send traps to

in this field. The format for this entry is XXX.XXX.XXX.XXX, with the value of XXX ranging from 0 to 255, and three dots, or else it returns to the beginning of the field.

7. Use the arrow keys to highlight the SAVE option, then press ENTER

or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory.

NOTE

SEHI100TX User’s Guide 7-17

The ﬁrst time an attempt is made to exit the screen without saving the changes, a “NOT SAVED?” message is displayed. The edits are lost if the user proceeds to exit without saving the changes.

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Chapter 7: Local Management

7.7.2 Exiting the Trap T able Screen

Use the following steps to exit the Trap Table screen and return to the Feature Selection screen:

1. Press the appropriate Function key. To exit to the Feature Selection screen, use the arrow keys to highlight the RETURN command.

2. Press ENTER. The Feature Selection screen appears.

7.8 THE SNMP TOOLS SCREEN

This section describes how to use the SNMP Tools screen to access Management Information Bases (MIBs). Access to screen options depends on the access status accorded to the user’s community name. This section describes Super-User management capabilities.

SNMP Tools allows access to valuable MIB information. The user gets information about speciﬁc object identiﬁers (OIDs), edit the values of conﬁgurable OIDs, and request the OID numerically sequential to the originally requested OID.

Other ways to view OIDs from the SNMP Tools screen include Walking, Stepping, and Cycling. Walk and Cycle let the user review several OIDs at a time.

To access the SNMP Tools screen from the Feature Selection screen, use the arrow keys to highlight the SNMP Tools Support option, then press ENTER or F9. The SNMP Tools screen shown in Figure 7-7 appears.

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The SNMP Tools Screen

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

SNMP TOOLS

SNMP COMMUNITY NAME: public

OID PREPEND: 1.3.6.1

GET SET GETNEXT WALK RECALL-OID STEP CYCLES REPEAT F6 F7 F8 F9

RETURN F10

1490_26

Figure 7-7 SNMP Tools Screen

The following sections describe SNMP Tools screen ﬁelds.

SNMP COMMUNITY NAME

Identiﬁes the community name used as a password to determine access level to the MIB component.

OID PREPEND

Speciﬁes the number preﬁx common to all Object Identiﬁers (OIDs) found in the MIBs – 1.3.6.1 is the default preﬁx OID. This is a modiﬁable ﬁeld.

GET

Lets you retrieve MIB objects using SNMP protocol.

SET

Allows users with Read-Write and Super-User access to change modiﬁable MIB objects, using SNMP protocol.

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Chapter 7: Local Management

GETNEXT

Displays the OID following the current OID.

WALK

Allows the user to scroll through a section of the MIB leaf by leaf, from a user-speciﬁed object identiﬁer. Leaves are the sections of the OID separated by periods. When a walk is initialized, the following categories for each walk entry, or step are displayed.

• Speciﬁed OID – gives the number tag for that OID.

• Size – identiﬁes the number of bytes it takes to store that object.

• Type – speciﬁes the variable type of the object (e.g., int = integer).

• Data – displays what the object identiﬁer represents.

RECALL-OID

Recalls, from memory, the last OID used.

STEP

Displays the MIB walk, step by step, giving the user time to view speciﬁc leaves in detail.

CYCLES

Allows the user to specify the number of GETNEXT requests to cycle through and how much time will elapse between each request.

REPEAT

Repeats the last GET command, allowing the user to monitor changes to a speciﬁc OID.

7.8.1 Getting Individual OIDs

Use the following steps to GET an OID:

1. Highlight GET, using the arrow keys, then press ENTER or F6. “<GET> OID (=|F9)” appears.

2. Use one of the following options to enter the OID:

• Enter the OID minus the prepend (e.g., if the prepend is 1.3.6.1,

and 4.1.3 is entered, then the OID=1.3.6.1.4.1.3).

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The SNMP Tools Screen

• Enter an “=” and the OID sufﬁx (e.g., if =4.1.3 is entered, then the OID=4.1.3). This allows the user to not use the prepend.

• Press F9 to recall an OID already entered. The user can then use the keyboard to modify the recalled OID as necessary.

3. Press ENTER. If there is no instance of that OID, the return code specifies “MIB_NO_INSTANCE”, otherwise, information about the data type, length, and value of that OID appears.

7.8.2 Getting the Next OID

Use the following steps to GET the next OID:

1. Highlight GETNEXT with the arrow keys, then press ENTER or F8. “<GETNEXT> OID (=|F9)” appears.

2. Enter the desired OID, or OID extension. (Press F9 to recall the last OID request. The recalled OID may then be modified as necessary.)

3. Press ENTER. If there is no instance of that OID, the return code specifies “MIB_NO_INSTANCE”, otherwise, information about the data type, length, and value of that OID appears.

7.8.3 Setting an OID

Use the following steps to SET an OID:

1. Highlight SET by using the arrow keys, then press ENTER or F7. “<SET> OID (=|F9)” appears.

2. Enter the OID, minus the OID prepend. If the OID was previously entered, pressing F9 recalls that entry. The arrow keys may be used to modify the recalled OID if necessary.

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3. Press ENTER. If there is no instance of that OID, the return code will specify “MIB_NO_INSTANCE”, otherwise “DATA TYPE:” appears.

4. Enter the data type for that OID. The following are possible choices: integer, string, null, OID, IP address, counter, gauge, timeticks, and opaque.

5. Press ENTER. “DATA” appears.

6. Enter the value to correspond to the OID. If accepted, “<SET> OPERATION CODE: XXXX <OK>” appears, otherwise, an error message appears.

7.8.4 Viewing Multiple OIDs

Viewing several object identiﬁers at one time allows the user to quickly scan a MIB for the speciﬁc information that is needed. The WALK command scrolls through OIDs numerically sequential to the initial OID request. The STEP command scrolls the MIB Walk, one OID at a time. Cycling allows you to specify how many GETNEXT commands to cycle through for one OID. The REPEAT command allows you to enter an OID and repeatedly get and display that OID for monitoring purposes.

7.8.5 Walking Thr ough OIDs

Use the following steps to WALK through an OID:

1. Highlight WALK, using the arrow keys, then press ENTER. “<INITIAL> OID (=|F9)” appears.

2. Enter the OID (minus the prepend) and press ENTER. The screen will begin walking through the sublayers of the MIB available from the specified OID. Each OID listed displays the specified OID, its size, its type, and the data it contains.

3. Press the SPACE bar to stop the walk, or wait for “***MIB WALK COMPLETED***” to appear on the screen.

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The SNMP Tools Screen

7.8.6 Stepping Through OIDs

Use the following steps to STEP through OIDs (the user can step through only after a GETNEXT):

1. Highlight STEP, using the arrow keys, then press ENTER. “Specify

OID” appears.

2. Enter the OID (only the suffix is necessary) and press ENTER. The

Tools screen begins to scroll one OID at a time, through all of the sublayers of the MIB available for that OID.

7.8.7 Cycling Through OIDs

Use the following steps to CYCLE through an OID:

1. Use the arrow keys to highlight CYCLES, then press ENTER.

2. Enter the number of cycles desired to occur after “ENTER CYCLE

COUNT:”, then press ENTER.

3. Enter how many seconds delay desired between get next requests after

“ENTER CYCLE DELAY (secs):”, then press ENTER.

7.8.8 Repeating the Last OID

Use the following steps to continuously REPEAT an OID for monitoring purposes:

1. Use the arrow keys to highlight CYCLES, then press ENTER.

2. Enter the OID to be repeated and press ENTER.

3. The GET command for the OID is repeated so the OID is repeatedly

displayed along with a running count at regular intervals. Press the SPACE bar to stop the process.

7.8.9 Exiting the SNMP Tools Screen

To exit the SNMP Tools screen:

1. Use the arrow keys to highlight the RETURN command.

2. Press ENTER. The Feature Selection screen appears.

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Chapter 7: Local Management

7.9 THE DEVICE STATISTICS SCREEN

This section describes the features of the Device Statistics screen. The user can view error , collision, and traf ﬁc statistics for the stack, a selected module, or a selected port. The user can also enable and disable ports.

To access the Device Statistics screen from the Feature Selection screen, use the arrow keys to highlight the Device Statistics option, then press ENTER. The Device Statistics screen shown in Figure 7-8 appears.

SEHI LOCAL MANAGEMENT

Cabletron SEHI Revision X.XX.XX

DEVICE STATISTICS

PORT: 1

67960 255

0 0 0 0 0 0 0 0 ENABLE UNSEGMENTED

BYTES RECEIVED: FRAMES RECEIVED:

ERRORS RECEIVED: COLLISIONS: OOW COLLISIONS: CRC ERRORS: ALIGNMENT ERRORS: RUNT PACKETS: GIANT PACKETS: PORT ADMIN. ST A TUS: PORT SEG. STATUS:

ENABLE PORT DISABLE PORT UPDATE -FREQ 3 Sec MODULE 1 PORT 1 RETURN

STACK TOTAL

3792125 16547

0 0 0 0 0 0 0 0

MODULE: 1 67960

255

0 0 0 0 0 0 0 0

Figure 7-8 Device Statistics Screen

The following sections describe Device Statistics screen ﬁelds and provide instructions on how to change them.

BYTES RECEIVED

Displays the number of bytes received.

1490_27

FRAMES RECEIVED

Displays the number of frames received.

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The Device Statistics Screen

ERRORS RECEIVED

Displays the number of errors received.

COLLISIONS

Displays the number of collisions received.

OOW COLLISIONS

Displays the number of Out Of Window collisions. OOW collisions are usually caused by one or more of the following:

• The network being too long due to the round trip propagation delay

being greater than 5.12 µs (the collision domain is too large).

• A station somewhere on the network is violating Carrier Sense and is

transmitting at will.

• A cable somewhere on the network failed during the transmission of

the packet.

CRC ERRORS

Displays the number of packets with bad Cyclic Redundancy Checks (CRC) that have been received from the network. The CRC is a 4-byte ﬁeld in the data packet that ensures that the transmitted data that is received is the same as the data that was originally sent.

ALIGNMENT ERRORS

Displays the number of errors due to misaligned packets.

RUNT PACKETS

Displays the number of runt packets received from the network. A runt packet is less than the minimum Ethernet frame size of 64 bytes, not including preamble.

GIANT PACKETS

Displays the number of packets received that exceed 1518 data bytes, not including preamble.

PORT ADMIN. STATUS

Displays the administrative status of the port selected. The two possible status messages are Enable or Disable.

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PORT SEG. STATUS

Displays the segmentation status of the port selected. The two possible status messages are Segmented or Unsegmented. The SEHI and SEH automatically partition problem segments, and reconnect non-problem segments to the network.

ENABLE PORT

This command lets the user enable the selected port.

DISABLE PORT

This command lets the user Disable the selected port.

UPDATE-FREQ

This command lets the user select the time interval between Stack/Module/Port counter updates. Choose update intervals in increments of 3 seconds, with the maximum interval being 99 seconds.

MODULE

This command lets the user view statistics for a selected module in the stack. The SEHI is Module 1 and each SEH in the stack follows in sequential order. Figure 7-9 shows each module number in the stack.

SEH - MODULE 5

SEH - MODULE 4

SEH - MODULE 3

SEH - MODULE 2

SEHI - MODULE 1

1490_28

Figure 7-9 Module Number Sequence

PORT

Allows the user to view statistics for ports 1–24 of the selected module.

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The Device Statistics Screen

7.9.1 Selecting the Appropriate Module/Port

When the Device Statistics screen ﬁrst appears, statistics are displayed for Module 1 and Port 1. View statistics for another module and port by using the Module x or Port x commands at the bottom of the screen.

Use the following steps to select a module or port:

1. Use the arrow keys to highlight the Module or Port command.

2. Press the SHIFT and + or – keys until the desired module or port

number appears.

3. Press ENTER. The selected Module and Port statistics appear.

7.9.2 Using the ENABLE PORT Command

The ENABLE PORT command lets the user enable the selected port. The user must ﬁrst use the PORT command to select the desired port.

Use the following steps to set the ENABLE PORT command:

1. Use the arrow keys to highlight the ENABLE PORT command at the

bottom of the screen.

2. Press ENTER. The corresponding port is enabled and the Port Admin

Status field is updated.

7.9.3 Using the DISABLE PORT Command

The DISABLE PORT command lets the user disable the port selected in the PORT command. The user must ﬁrst use the PORT command to select the desired port.

Use the following steps to set the DISABLE PORT command:

1. Use the arrow keys to highlight the DISABLE PORT command at the

bottom of the screen.

2. Press ENTER. The corresponding port is disabled and the Port Admin

Status field is updated.

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Chapter 7: Local Management

7.9.4 Setting the UPDATE-FREQency Field

This ﬁeld changes the time interval between Stack/Module/Port counter updates. Use the following steps to set the update frequency:

1. Use the arrow keys to highlight the UPDATE-FREQ command at the bottom of the screen.

2. Use the + or – key to increase or decrease the time in 3-second increments until the appropriate time is displayed.

3. Press ENTER. The displayed time is saved.

7.9.5 Exiting the Device Statistics Screen

Use the following steps to exit the Device Statistics screen and return to the Feature Selection screen:

1. Use the arrow keys to highlight the RETURN command at the bottom of the screen.

2. Press ENTER. The Feature Selection screen appears.

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APPENDIX A

EPIM SPECIFICATIONS

A.1 EPIM SPECIFICATIONS

EPIMs enable the connection of the SEHI to the network using different media types.The SEHI100TX-22 supports the EPIM-100TX, EPIM-100FX, and the EPIM-100FMB. This appendix provides the speciﬁcations for each EPIM.

A.1.1 EPIM-100TX

The EPIM-100TX is an RJ45 connector supporting Unshielded Twisted Pair (UTP) cabling.

The slide switch on the EPIM-100TX determines the crossover status of the cable pairs. If the switch is on the X side, the pairs are internally crossed over. If the switch is on the = side, the pairs are not internally crossed over. Figure A-1 shows the pinouts for the EPIM-100TX in both positions.

Position X (crossed over)

1. RX+

2. RX-

3. TX+

4. NC

5. NC

6. TX-

7. NC

8. NC Position =

(not crossed over)

1. TX+

2. TX-

3. RX+

4. NC

Figure A-1 EPIM-100TX Pinouts

5. NC

6. RX-

7. NC

8. NC

1511_11

SEHI100TX User’s Guide A-1

Page 78

Appendix A: EPIM Speciﬁcations

A.1.2 EPIM-100FX

The EPIM-100FX shown in Figure A-2 supports Multimode Fiber Optic cabling. The EPIM-100FX is equipped with an SC style connector. Speciﬁcations for the EPIM-100FX are listed in Table A-1.

12X

13X

14X

1511_17

15X

16X

Figure A-2 EPIM-100FX

EPIM 1

EPIM-

LNK

100FX

Table A-1 Transmitter Power (EPIM-100FX)

Cable Type Worst Case Budget Typical Budget

50/125 µm ﬁber optic 6.0 dB 9.0 dB

62.5/125 µm ﬁber optic 9.0 dB 12.0 dB 100/140 µm ﬁber optic 15.0 dB 18.0 dB

The transmitter power levels and receive sensitivity levels listed are peak power lev els after optical overshoot. A peak power meter must be used to correctly compare the values given above to those measured on any particular port. If power lev els are being measured with an a v erage po wer meter, add 3 dBm to the measurement to compare the measured v alues to the values listed above.

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EPIM Speciﬁcations

A.1.3 EPIM-100FMB

The EPIM-100FMB shown in Figure A-3 supports multimode ﬁber optic cabling and has an SC style connector.

12X

13X

14X

15X

16X

1511_20

Figure A-3 EPIM-100FMB

The EPIM-100FMB acts as a non-ﬁltering bridge. Its purpose is to extend the Broadcast Domain of a shared access 100BASE-T LAN, so that a full length of ﬁber optic cable can be used to reach the next domain or more typically to a switch port.

EPIM 1

EPIM-

LNK

100FMB

The maximum diameter of a 100BASE-T collision domain using UTP cable to the desktop and ﬁber cable in the next domain or switch port is only 263 meters (100 meters of UTP and 163 meters of ﬁber optics). There are circumstances where the maximum ﬁber optic cable length of 163 meters does not meet some requirements such as in the cabling of high rise buildings or campus environments. The EPIM-100FMB helps meet these requirements by extending the maximum ﬁber optic cable length that can be used from 163 meters to 400 meters.

Table A-2 provides the speciﬁcations for the EPIM-100FMB.

Table A-2 Transmitter Power (EPIM-100FMB)

Cable Type Worst Case Budget Typical Budget

50/125 µm ﬁber optic 6.0 dB 9.0 dB

62.5/125 µm ﬁber optic 9.0 dB 12.0 dB 100/140 µm ﬁber optic 15.0 dB 18.0 dB

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Appendix A: EPIM Speciﬁcations

A-4 SEHI100TX User’s Guide

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APPENDIX B

IMAGE FILE DOWNLOAD USING OID STRINGS

This appendix provides instructions for setting up a TFTP server and to download an image ﬁle to the SEHI by setting speciﬁc MIB OID strings. Set the OID strings with the SNMP Tools screen described in Chapter 7.

NOTE

Download an image ﬁle to the SEHI with a remote management package such as SPECTRUM, SPECTRUM Element Manager, or the appropriate SPECTRUM Portable Management Application. Refer to the speciﬁc package documentation for image ﬁle download procedures.

The SEHI supports the Standard Local Download application. In this application the SEHI automatically disables management while download of the new ﬁrmware image is in progress.

Before downloading the image to a device, you must do the following:

• Load the image ﬁle onto your network TFTP server.

NOTE

For information on how to set up a workstation as a TFTP server, refer to your speciﬁc workstation documentation and the guidelines outlined in this instruction guide.

• Decompress the image ﬁle.

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Appendix B: Image File Download Using OID Strings

B.1 SETTING UNIX WORKSTATION AS TFTP SERVER

Downloading an image ﬁle requires setting up your UNIX workstation as a TFTP server.

NOTE

CAUTION

Due to variations between UNIX systems, and individual conﬁgurations, this section provides only GUIDELINES for conﬁguring a UNIX workstation to perform an image ﬁle download. The instructions include command examples, where appropriate. Bold lettering in e xamples indicates oper ator entry.

If unsure about how to properly conﬁgure your UNIX workstation using these guidelines, contact your Systems

Administrator.

Use the following steps to set up a UNIX workstation:

1. If you already have a /tftpboot directory, confirm the TFTP setup of your workstation as follows:

Request a process status and grep for TFTP (e.g., unix% netstat -a | grep tftp).

The following information represents a typical output:

user 161 7.7 1.2 32 184 p3 S 12:00 grep tftp root 87 0.0 0.9 48 136 ? S 11:05 tftp -s

The term tftp -s, located at the end of the root string, indicates TFTP is active. If TFTP is NOT running, only the grep process appears.

2. If you do NOT have a /tftpboot directory, then create one (e.g., unix% mkdir tftpboot).

3. Ensure that the /tftpboot directory is not owned (e.g., unix% chown nobody tftpboot).

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Standard Local Download

4. Store the hex image file in the /tftpboot directory as sehi.hex.

NOTE

This step requires decompression of the zipped image ﬁle. If you do not have a UNIX unzip utility, access to a PC with pkunzip, or a way to FTP the decompressed image to a UNIX workstation, contact Cabletron Systems Technical Support.

5. Edit the /etc/inetd.conf file by removing anything prior to the tftpboot

daemon (e.g., the # sign) that comments-out the line.

6. Kill the inetd process (e.g., unix% kill -HUP ‘process ID number’),

and then restart the process (e.g., unix% inetd), to enable the revised inetd.conf file.

NOTE

You must request a process status and grep for inetd to obtain the process ID number (refer back to step 3 in this procedure).

B.2 STANDARD LOCAL DOWNLOAD

Table B-1 provides a step-by-step procedure for downloading the ﬁrmware image ﬁle. This section provides speciﬁc MIB OIDs, their names, and the required setting for proper image ﬁle download. Refer to your speciﬁc MIB walking tool documentation for instructions on how to set MIB OID strings.

The Download OIDs for Cabletron Systems products reside in the Cabletron Systems enterprise MIBs (group 52). The speciﬁc OIDs necessary to perform an image ﬁle download reside in the common download group under ctDL (Cabletron Download). The full OID string to reach this group is: 1.3.6.1.4.1.52.4.1.5.8.1

When performing the steps in Table B-1, keep the following in mind:

• You must follow the steps in order.

• Enter the IP address of the TFTP server in standard dotted decimal

notation (e.g., 132.177.118.24).

• Enter the FULL path to the image ﬁle in the ctDLTFTPRequest OID,

including the name of the image ﬁle (e.g., c:\tftpboot\sehi.hex).

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Appendix B: Image File Download Using OID Strings

Table B-1 OIDs and Settings

Step OID Name OID Number

1. ctDLForceOnBoot 1.3.6.1.4.1.52.4.1.5.8.1.1.0 integer 1

2. ctDLCommitRAMToFlash 1.3.6.1.4.1.52.4.1.5.8.1.2.0 integer 1

3. ctDLTFTPRequestHost 1.3.6.1.4.1.52.4.1.5.8.1.4.0 IP

4. ctDL TFTPRequest 1.3.6.1.4.1.52.4.1.5.8.1.5.0 string

5. ctDLInitiateColdBoot 1.3.6.1.4.1.52.4.1.5.8.1.3.0 integer 1

Data Type

address

(ASCII)

SNMP OID Data

Enter the IP address of the TFTP server.

Enter the path to the image ﬁle.

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INDEX

Numerics

100BASE-TX

cable length 3-2 crosstalk 3-2 impedance 3-2 jitter 3-2 noise 3-2 propagation delay 3-3 temperature 3-3

Agency approvals

emissions 3-7 immunity 3-7 safety 3-7

Cable specifications 3-1

multimode fiber optic 3-3

UTP and STP 3-2 Caution 1-2 COM port 3-6 Community Name Table

access 7-10

community name 7-10 Configuration

baud rate 7-13

default gateway 7-13

I/F 7-12

IP address 7-13

MAC address 7-13

port ENABLE override 7-13

serial port application 7-13

subnet mask 7-13

Default gateway 7-15 Device statistics

00W collisions 7-25 alignment errors 7-25 bytes received 7-24 collisions 7-25 CRC errors 7-25 disable port 7-26 enable port 7-26 errors recieved 7-25 frames received 7-24 giant packets 7-25 module 7-26 port 7-26 port admin. status 7-25 port seg. status 7-26 runt packets 7-25

update freq 7-26 Device Statistics screen 7-24 Dimensions 3-8

Environmental requirements 3-7 EPIM installation 4-9 EPIM specifications 2-4

EPIM-100FMB A-3

EPIM-100FX A-2

EPIM-100TX A-1

FLASH EEPROMs 2-2 FLASH firmware image 4-1

Help 1-3 HubSTACK

cable requirements 3-1

SEHI100TX User’s Guide Index-1

Page 86

Index

IP address 7-13

LANVIEW 6-2

LEDs 6-3

Local Management 7-1

accessing 7-6 community name table 7-9 configuration screen 7-12 console cable 7-4 device statistics 7-24 DISABLE port 7-27 ENABLE port 7-27 port enable override 7-15 setting default gateway 7-15 setting IP address 7-13 setting subnet mask 7-14 SNMP tools 7-18 terminal requirements 7-3 terminal setup 7-5 trap table 7-16

Multimode fiber optic

cable specifications 3-3

Network connection

EPIM-100FMB 5-4 EPIM-100FX 5-4 EPIM-100TX 5-2 SEH100TX-22 5-1

Network port specifications

SEHI100TX-22 3-6

NVRAM

setting 6-5

OIDs 7-18 Operating specifications 3-7

Port ENABLE override 7-15 Power supply requirements 3-7

Remote network management 2-4 Reset 6-4

Safety requirements 3-7 SEHI features 2-2 Size, dimensions 3-8 SNMP tools

cycles 7-20 get 7-19 getnext 7-20 OID prepend 7-19 recall OID 7-20 repeat 7-20 set 7-19 SNMP community name 7-19 step 7-20 walk 7-20

SNMP Tools screen 7-18 Specifications

SEHI network ports 3-6

STP cable specifications 3-2 Subnet mask 7-14

Trap table

SNMP community name 7-17 trap IP address 7-17 traps 7-17

Trap Table screen 7-16 Troubleshooting 6-1

UTP cable specifications 3-2

Warning 1-2

Index-2 SEHI100TX User’s Guide

Page 87

POWER SUPPLY CORD

The mains cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approved for use in the country of application.

GERMAN:

Die Netzleitung, die mit diesem Geraet benuetzt wird, soll einen zwei Leiter mit Erdleiter haben, wobei die Leiter mindestens 0.75 mm sind, mit einer normalen IEC Geraetesteckdose an einem Ende und einem Geraetestecker am anderen Ende versehen sind, der fuer den Gebrauch und die Anwendung des Geraetes geeignet und der zum Benuetzen im Lande der Anwendung anerkannt ist.

SPANISH:

El cable principal de la red eléctrica utilizado con este equipo debe tener 2 conductores y 1 toma de tierra con un mínimo de 0.75 mm2 cada uno y necesita tener un aparato de acoplamiento standard IEC en un extremo y un enchufe para el cable principal de la red eléctrica en el otro extremo, lo cual sea adecuado para el uso y applicación del producto y lo cual sea aprobado para uso en el pais de applicación.

FRENCH:

Le cordon d' alimentation reliant cet appareil au secteur doit obligatoirement avoir deux fils conducteurs de 0.75 mm2 minimum et un fil de terre. It doit également être équipé du côté appareil d'une fiche agrée IEC et du côte secteur, d'une prise adaptée à l'usage du produit et aux normes du pays où l'appareil est utilisé.

Page 88

Cabletron Systems SEHI100TX-22 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

NOTICE

CONTENTS

INTRODUCTION

1.1 USING THIS MANUAL

1.2 DOCUMENT CONVENTIONS

1.3 GETTING HELP

1.4 RELATED MANUALS

SEHI FEATURES AND OPTIONS

2.1 SEHI OVERVIEW

2.2 SEHI FEATURES

2.3 STACKABLE CAPABILITIES

2.4 RACK MOUNTING CAPABILITIES

2.5 REMOTE NETWORK MANAGEMENT

2.6 OPTIONAL EPIMS

3.1 CABLE SPECIFICATIONS

3.1.1 HubSTACK Interconnect Cable Requirements

3.2 NETWORK CABLE LENGTHS

3.3 NETWORK PORT SPECIFICATIONS

3.4 COM PORT REQUIREMENTS

3.5 OPERATING SPECIFICATIONS

3.5.1 Power Supply Requirements

3.5.2 Environmental Requirements

3.5.3 Agency Approvals

3.6 PHYSICAL SPECIFICATIONS

INSTALLATION

4.1 UNPACKING THE SEHI

4.2 PRE-INSTALLATION CHECKOUT

4.3 TABLETOP OR SHELF INSTALLATION

4.4 RACKMOUNT INSTALLATION

4.5 POWERING UP AND STACKING THE SEHI

4.6 INSTALLING AN EPIM

CONNECTING TO THE NETWORK

5.1 CONNECTING THE SEHI TO THE NETWORK

5.1.1 Connecting to Network Ports

5.1.2 Connecting to an EPIM-100TX

5.1.3 Connecting to an EPIM-100FX or EPIM-100FMB

5.2 TESTING THE INSTALLATION

TROUBLESHOOTING

6.1 INSTALLATION T EST

6.2 USING LANVIEW

6.3 USING THE RESET BUTTON

6.4 SETTING THE NVRAM SWITCH

LOCAL MANAGEMENT

7.1 KEYBOARD CONVENTIONS

7.2 MANAGEMENT TERMINAL SETUP

7.3 ACCESSING LOCAL MANAGEMENT

7.4 THE FEATURE SELECTION SCREEN

7.5 THE COMMUNITY NAME TABLE SCREEN

7.5.1 Editing the Community Name Field

7.6 THE CONFIGURATION SCREEN

7.6.1 Setting the IP Address

7.6.2 Setting the Subnet Mask

7.6.3 Setting the Default Gateway

7.6.4 Using the Port Enable Override

7.7 THE TRAP TABLE SCREEN

7.7.2 Exiting the Trap T able Screen

7.8 THE SNMP TOOLS SCREEN

7.8.1 Getting Individual OIDs

7.8.2 Getting the Next OID

7.8.3 Setting an OID

7.8.4 Viewing Multiple OIDs

7.8.5 Walking Thr ough OIDs

7.8.6 Stepping Through OIDs

7.8.7 Cycling Through OIDs

7.8.8 Repeating the Last OID

7.8.9 Exiting the SNMP Tools Screen

7.9 THE DEVICE STATISTICS SCREEN

7.9.1 Selecting the Appropriate Module/Port

7.9.2 Using the ENABLE PORT Command

7.9.3 Using the DISABLE PORT Command

7.9.4 Setting the UPDATE-FREQency Field

7.9.5 Exiting the Device Statistics Screen

EPIM SPECIFICATIONS

A.1 EPIM SPECIFICATIONS

A.1.1 EPIM-100TX

A.1.2 EPIM-100FX