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NBR-220,NBR-420,ANDNBR-620

INSTALLATION GUIDE

NBR-220 TWO PORT BRIDGEWITH LANVIEW®

 

PWR

RESET

CPU

 

COM

NBR-420 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

NBR-620 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

RECEIVE

 

 

 

TRANSMIT

 

 

 

COLLISION

 

PWR

PWR

STAND BY

EPIM-A

 

EPIM-A

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

TST RED SYN CTS TST

PORT F

PORT E

 

 

 

BRIM-WT1

 

 

 

 

RECEIVE

TRANSMIT

COLLISION

STAND BY

STY XMT

LNK RCV

BRIM-A100

PWR

PWR

EPIM-A

EPIM-A

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

TST RED SYN CTS TST

BRIM-WT1

PORT F

PORT E

 

 

 

 

 

 

 

 

RECEIVE

 

 

 

 

 

TRANSMIT

 

 

 

 

 

COLLISION

 

PWR

 

PWR

 

STAND BY

EPIM-A

 

 

EPIM-A

 

 

 

 

 

STY XMT

LNK RCV

BRIM-A100

PWR

PWR

EPIM-A

EPIM-A

D C B A PORT

PORT D

PORT C

PORT B

PORT A

1092_01

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.

Copyright 1996 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005All Rights Reserved

Printed in the United States of America

Order Number: 9031092-01May 1996

SPECTRUM,LANVIEW,MicroMMAC, andBRIM are registered trademarks andElement Manager,EPIM,EPIM-A,EPIM-F1,EPIM-F2,EPIM-F3,EPIM-T,EPIM-X,FOT-F,FOT-F3,HubSTACK,NBR-220,NBR-420,NBR-620,SEH,SEHI, andTMS-3 are trademarks of Cabletron Systems, Inc.

All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies.

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment uses, generates, and can radiate radio frequency energy and if not installed in accordance with the operator’s manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause interference in which case the user will be required to correct the interference at his own expense.

WARNING: Changes or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Printed on

Recycled Paper

NBR-SERIESInstallation Guide

i

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 Technology Equipment (VCCI) aimed at preventing radio interference in commercial and/or industrial areas.

Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be caused to radios and TV receivers, etc.

Read the instructions for correct handling.

CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT

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

This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media. BY UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

ii

NBR-SERIESInstallation Guide

Notice

CABLETRON SOFTWARE PROGRAM LICENSE

1.LICENSE. You have the right to use only the one (1) copy of the Program provided in this package subject to the terms and conditions of this License Agreement.

You may not copy, reproduce or transmit any part of the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron.

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

3.APPLICABLE LAW. This License Agreement shall be interpreted and governed under the laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts.

EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY

1.EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.

2.NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR LIMITATION OF IMPLIED WARRANTIES, IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

UNITED STATES GOVERNMENT RESTRICTED RIGHTS

The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19(a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers.

For Department of Defense units, the product is licensed with “Restricted Rights” as defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-7013(c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at252.227-7013.Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire03867-0505.

NBR-SERIESInstallation Guide

iii

Notice

DECLARATION OF CONFORMITY

Application of Council Directive(s): 89/336/EEC

73/23/EEC

Manufacturer’s Name: Cabletron Systems, Inc.

Manufacturer’s Address: 35 Industrial Way

PO Box 5005

Rochester, NH 03867

European Representative Name: Mr. J. Solari

European Representative Address: Cabletron Systems Limited

Nexus House, Newbury Business Park

London Road, Newbury

Berkshire RG13 2PZ, England

Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC

EC Directive 73/23/EEC EN 55022

EN 50082-1EN 60950

Equipment Type/Environment: Networking Equipment, for use in a

Commercial or Light Industrial Environment.

We the undersigned, hereby declare that the equipment packaged with this notice conforms to the above directives.

Manufacturer

Legal Representative in Europe

Mr. Richard Michaud

Mr. J. Solari

___________________________________

___________________________________

Full Name

Full Name

Manager of Engineering Services

Managing Director - E.M.E.A.

___________________________________

___________________________________

Title

Title

Rochester, NH, USA

Newbury, Berkshire, England

___________________________________

___________________________________

Location

Location

iv

NBR-SERIESInstallation Guide

CONTENTS

CHAPTER 1

INTRODUCTION

 

1.1

Using This Manual.......................................................................

1-2

1.2

NBR Features..............................................................................

1-3

1.3

Conventions Used in This Document ..........................................

1-6

1.4

Related Manuals..........................................................................

1-6

1.5

Getting Help.................................................................................

1-7

CHAPTER 2 CONTROLS AND INDICATORS

 

2.1

LANVIEW LEDs...........................................................................

2-2

2.2

RESET Button .............................................................................

2-2

2.3

LCD Display.................................................................................

2-2

CHAPTER 3

INSTALLATION

 

3.1

Unpacking the NBR .....................................................................

3-1

3.2

Preparing the NBR for Installation ...............................................

3-2

 

3.2.1

Removing Chassis Cover ...............................................

3-2

 

3.2.2

Setting Mode Switches ...................................................

3-5

 

3.2.3 Setting NVRAM Reset Switch.........................................

3-6

 

3.2.4

Installing SIMM Upgrades...............................................

3-7

 

 

3.2.4.1 Installing FLASH SIMMs ................................

3-7

 

 

3.2.4.2 Installing LDRAM and SDRAM SIMMs ..........

3-9

 

3.2.5

Adding/Replacing EPIMs ................................................

3-9

 

3.2.6

Adding/Replacing BRIMs..............................................

3-10

 

3.2.7

Testing the NBR ...........................................................

3-11

3.3

Installing the NBR......................................................................

3-12

 

3.3.1 Attaching the Strain-Relief Bracket...............................

3-13

 

3.3.2 Rack Mounting the NBR ...............................................

3-14

 

3.3.3

Free-Standing Installation.............................................

3-15

3.4

Connecting the NBR to the Power Source ................................

3-15

3.5

Connecting the NBR to the Network..........................................

3-17

 

3.5.1 Connecting a Twisted Pair Segment to an EPIM-T ......

3-17

 

3.5.2 Connecting an AUI Cable to an EPIM-X.......................

3-19

3.5.3Connecting a Fiber Optic Cable to an EPIM-F1/F2 or EPIM-F33-20

3.5.4

Connecting a Thin-Net Segment to an EPIM-C............

3-22

3.5.5

Connecting an AUI Cable to an EPIM-A.......................

3-23

NBR-SERIESInstallation Guide

v

Contents

CHAPTER 4

TROUBLESHOOTING

 

4.1

Using LANVIEW...........................................................................

4-1

4.2

Troubleshooting Checklist............................................................

4-4

4.3

Using the LCD..............................................................................

4-6

 

4.3.1

Unsaved Initialization Messages .....................................

4-7

 

4.3.2

Static System Messages .................................................

4-7

 

4.3.3

Alarm Messages..............................................................

4-9

 

4.3.4

Saved System Messages..............................................

4-10

 

4.3.5 Failure or Error Messages.............................................

4-12

4.4

Using the RESET Button ...........................................................

4-12

APPENDIX A NBR SPECIFICATIONS

 

A.1

Operating Specifications .............................................................

A-1

A.2

COM Port Pinouts .......................................................................

A-2

A.3

Physical Properties .....................................................................

A-3

A.4

Environmental Requirements......................................................

A-3

A.5

Certification .................................................................................

A-3

A.6

Power Supply Requirements ......................................................

A-3

APPENDIX B

EPIM SPECIFICATIONS

 

B.1

EPIM Specifications ....................................................................

B-1

B.2

EPIM-T

........................................................................................

B-1

B.3

EPIM-F1/F2.................................................................................

B-2

B.4

EPIM-F3......................................................................................

B-3

B.5

EPIM-C .......................................................................................

B-5

B.6

EPIM-A and EPIM-X ...................................................................

B-6

APPENDIX C NETWORK PLANNING AND CONFIGURATION

 

C.1

Network Cable Requirements .....................................................

C-1

 

C.1.1 10BASE-T Twisted Pair Network....................................

C-1

 

C.1.2 Multimode Fiber Optic Network ......................................

C-3

 

C.1.3 Single Mode Fiber Optic Network ...................................

C-4

 

C.1.4

Thin-Net Network............................................................

C-5

C.2

Transceiver Requirements..........................................................

C-6

C.3 The NBR as a Multiport Router...................................................

C-6

C.4 The NBR-420/NBR-620 and BRIMs ...........................................

C-6

vi

NBR-SERIESInstallation Guide

 

 

Contents

APPENDIX D ADDITIONAL INFORMATION

 

D.1

NBR Overview .............................................................................

D-1

D.2

Ethernet Channels A, B, C, and D...............................................

D-2

D.3

Channels E and F........................................................................

D-2

D.4

Bridging Functionality ..................................................................

D-3

INDEX

NBR-SERIESInstallation Guide

vii

CHAPTER 1

INTRODUCTION

The Cabletron Systems NBR-SERIESofNetwork Bridge Routers (NBR-220, NBR-420, NBR-620) provide bridging and routing solutions for Ethernet, token ring, FDDI, ATM, or wide area networks. TheNBR-SERIESof standalone hubs consist of the following three models:

NBR-220 – two Ethernet Port Interface Module (EPIM) ports

NBR-420 – two EPIM ports, and two Bridge/Router Interface Module (BRIM) ports

NBR-620 – four EPIM ports, and two BRIM ports

NBR-220 TWO PORT BRIDGEWITH LANVIEW®

 

PWR

RESET

CPU

 

COM

NBR-420 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

NBR-620 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

RECEIVE

 

 

 

TRANSMIT

 

 

 

COLLISION

 

PWR

PWR

STAND BY

EPIM-A

 

EPIM-A

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

 

 

 

 

STY

XMT

 

 

 

 

 

 

LNK

RCV

 

 

 

 

TST RED SYN CTS TST

 

 

 

BRIM-A100

 

 

 

BRIM-WT1

PORT F

PORT E

 

 

 

 

 

 

 

 

RECEIVE

 

 

 

 

 

 

 

TRANSMIT

 

 

 

 

 

 

 

COLLISION

 

 

 

 

PWR

PWR

 

STAND BY

 

 

 

 

EPIM-A

EPIM-A

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

 

 

 

 

 

STY

XMT

 

 

 

 

 

 

LNK

RCV

 

 

 

TST RED SYN CTS TST

BRIM-WT1

PORT F

PORT E

 

BRIM-A100

 

 

 

 

 

 

 

 

 

 

 

RECEIVE

 

 

 

 

 

 

 

TRANSMIT

 

 

 

 

 

 

 

COLLISION

 

PWR

 

PWR

PWR

PWR

 

STAND BY

EPIM-A

 

 

EPIM-A

EPIM-A

EPIM-A

D C B A PORT

PORT D

PORT C

PORT B

PORT A

1092_01

Figure 1-1TheNBR-SERIESof Network Products

NOTE

This manual uses the term NBR to describe the NBR-220,

NBR-420,andNBR-620unless otherwise specified.

NBR-SERIESInstallation Guide

Page 1-1

Chapter 1: Introduction

This manual explains the following:

Installing the NBR

Connecting the NBR to an existing network

Testing the NBR

Troubleshooting any installation/operational problems

In addition, Appendices contain NBR and Ethernet Port Interface Module (EPIM) environmental and operational specifications.

This manual serves as a simple installation and troubleshooting reference guide for the NBR. For information regarding NBR out-of-bandmanagement, refer to theNBR-220, NBR-420, and NBR-620 Local

Management Guide.

To gain a full understanding of this device and its capabilities, and to help eliminate any potential problems during or after installation, please be sure to read and understand all of the instructions/information in this document and in the release notes supplied with your NBR.

1.1 USING THIS MANUAL

You should have a general working knowledge of Ethernet or IEEE 802.3 type data networks and their physical layer components, prior to installing the NBR. The following summarizes the organization of this manual.

Chapter 1, Introduction, provides instructions for using this manual, product features, document conventions, related documents, and how to get help.

Chapter 2, Controls and Indicators, discusses the controls and indicators for the NBR.

Chapter 3, Installation, provides instructions required to unpack the NBR, performpre-installationtesting, install the NBR, and connect the NBR to the network.

Chapter 4, Troubleshooting, provides detailed troubleshooting procedures for the NBR and a checklist to enable the user to troubleshoot problems using LANVIEW LEDs.

Page 1-2

NBR-SERIESInstallation Guide

NBR Features

Appendix A, NBR Specifications, provides the physical properties, environmental operating requirements, agency approvals, and power requirements.

Appendix B, EPIM Specifications, details the specifications for the EPIMs that may be used with the NBR.

Appendix C, Network Planning and Configuration, provides information on network cable requirements.

Appendix D, Additional Information, provides an NBR overview and bridging functionality.

1.2 NBR FEATURES

LANVIEW LEDs

Cabletron Systems provides a visual diagnostic and monitoring system, called LANVIEW, with the NBR. LANVIEW LEDs help you quickly identify device, port, and physical layer problems.

LCD

The NBR-420andNBR-620are equipped with an LCD that provides information about the NBR such as power up diagnostics, revision levels, MAC and IP addresses, and error alerts.

RESET Button

The RESET button lets you re-bootand initialize the processor.

Intelligence

The NBR is equipped with an advanced Intel i960 microprocessor to provide a scalable RISC-basedarchitecture.

Hardware Bridging Logic

The NBR uses hardware packet filter/forward logic to increase bridging performance.

Connectivity

The NBR-220and theNBR-420have two Ethernet ports (A and B channels) and theNBR-620has four Ethernet ports (A, B, C, and D channels). These ports provide external connections through Ethernet Port Interface Modules (EPIMs) located on the NBR faceplate.

NBR-SERIESInstallation Guide

Page 1-3

Chapter 1: Introduction

Bridging/Routing

The NBR-420andNBR-620can support two optional Bridge/Router Interface Modules (BRIMs). These modules allow for additional Ethernet connections, Wide Area (Full or Fractional T1; 56k DDS) access, or links to existinghigh-speednetwork backbones such as Asynchronous Transfer Mode (ATM) or Fiber Distributed Data Interface (FDDI).

Memory

The NBR comes with 4 Megabytes (MB) of Shared Dynamic Random Access Memory (SDRAM), 8 MB of Local Dynamic Random Access Memory (LDRAM), and 2 MB of FLASH Electrically Erasable Programmable Read Only Memory (FLASH EEPROM). In addition, the NBR motherboard provides the option of upgrading memory capacity by using Single In-lineMemory Modules (SIMMs).

In order to fully use Remote Monitoring (RMON), it is necessary to upgrade local memory with an 8 MB SIMM. Without this upgrade, some RMON groups may not be available.

NOTE

For information on how to order SIMM upgrade packages,

contact Cabletron Systems Technical Support.

DLM

The NBR allows the option of using Cabletron Systems Distributed LAN Monitor (DLM) software to locally poll and monitor any Simple Network Management Protocol (SNMP) or Internet Protocol (IP) device.

Management Information Base (MIB) Support

The NBR provides IETF MIB support, which includes the following:

Cabletron Systems Enterprise MIBs

Remote Monitoring MIB (RMON)

Bridge MIB

MIBII

Page 1-4

NBR-SERIESInstallation Guide

NBR Features

MIB Navigation

NBR firmware supports a management tool which allows for MIB navigation from a remote station. Refer to the NBR-220, NBR-420, and NBR-620 Local Management Guide for more information regarding MIB navigation.

Spanning Tree Protocol Support

The NBR supports the following spanning tree protocols:

802.1d

DECnet

Serial Connections/Local Management

The NBR-220provides one RJ45 port (COM) for serial connections and theNBR-420andNBR-620provide two RJ45 ports (COM 1 and

COM 2). These ports allow you to access Local Management by locally connecting a DEC VT220 or VT320 terminal, or a PC using VT emulation software. Refer to your NBR-220, NBR-420, and NBR-620 Local Management Guide for additional information on how to use Local Management. In addition, any of the COM ports can be used as an Uninterruptible Power Supply (UPS) management port.

NBR-SERIESInstallation Guide

Page 1-5

Chapter 1: Introduction

1.3 CONVENTIONS USED IN THIS DOCUMENT

The following conventions are used throughout this document:

NOTE

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

information that may be of special importance.

TIP

!

CAUT ION

Tip symbol. Conveys helpful hints concerning procedures or actions.

Caution symbol. Contains information essential to avoid damage to the equipment.

Warning symbol. Warns against an action that could result in equipment damage, personal injury or death.

1.4 RELATED MANUALS

Use the following manuals to supplement the procedures and other technical data provided in this manual. This manual references procedures in these manuals, where appropriate, but does not repeat them.

Cabletron Systems NBR-220,NBR-420,andNBR-620Local

Management Guide

Cabletron Systems BRIM User’s Guide(s)

Cabletron Systems Routing Services Configuration Guide

Page 1-6

NBR-SERIESInstallation Guide

Getting Help

1.5 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:

By phone

(603) 332-9400

 

Monday – Friday; 8 A.M. – 8P.M. Eastern Time

By CompuServe

GO CTRON from any ! prompt

By Internet mail

support@ctron.com

By FTP

ctron.com (134.141.197.25)

Login

anonymous

Password

your email address

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

Description of the failure

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

Description of your network environment (layout, cable type, etc.)

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

Serial and revision numbers of all Cabletron Systems products in the NBR network

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

Any previous Return Material Authorization (RMA) numbers

NBR-SERIESInstallation Guide

Page 1-7

CHAPTER 2

CONTROLS AND INDICATORS

This chapter provides descriptions of the controls and indicators of the

Network Bridge Routers (NBR-220,NBR-420,NBR-620). The models are as follows:

NBR-220 – two Ethernet Port Interface Module (EPIM) ports

NBR-420 – two EPIM ports, and two Bridge/Router Interface Module (BRIM) ports

NBR-620 – four EPIM ports, and two BRIM ports

NBR-220 TWO PORT BRIDGEWITH LANVIEW®

 

PWR

RESET

CPU

 

COM

NBR-420 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

NBR-620 MULTI PORT BRIDGE ROUTER

 

PWR

DISPLAY RESET

CPU

COM 2

COM 1

RECEIVE

 

 

 

TRANSMIT

 

 

 

COLLISION

 

PWR

PWR

STAND BY

EPIM-A

 

EPIM-A

 

 

 

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

 

 

 

 

STY

XMT

 

 

 

 

 

 

LNK

RCV

 

 

 

 

TST RED SYN CTS TST

 

 

 

BRIM-A100

 

 

 

BRIM-WT1

PORT F

PORT E

 

 

 

 

 

 

 

 

RECEIVE

 

 

 

 

 

 

 

TRANSMIT

 

 

 

 

 

 

 

COLLISION

 

 

 

 

PWR

PWR

 

STAND BY

 

 

 

 

EPIM-A

EPIM-A

B A PORT

PORT B

PORT A

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

 

LNK YEL STB DSR LNK

 

 

 

 

 

 

 

 

 

 

STY

XMT

 

 

 

 

 

 

LNK

RCV

 

 

 

TST RED SYN CTS TST

BRIM-WT1

PORT F

PORT E

 

BRIM-A100

 

 

 

 

 

 

 

 

 

 

 

RECEIVE

 

 

 

 

 

 

 

TRANSMIT

 

 

 

 

 

 

 

COLLISION

 

PWR

 

PWR

PWR

PWR

 

STAND BY

EPIM-A

 

 

EPIM-A

EPIM-A

EPIM-A

 

 

 

 

 

 

 

D C B A PORT

PORT D

PORT C

PORT B

PORT A

1092_01

Figure 2-1TheNBR-SERIESof Network Products

NBR-SERIESInstallation Guide

Page 2-1

Chapter 2: Controls and Indicators

2.1 LANVIEW LEDs

The NBR-220,NBR-420,andNBR-620incorporate the Cabletron Systems LANVIEW status monitoring and diagnostics system. LANVIEW LEDs help diagnose problems, such as a power failure or a cable fault. Each NBR includes the following LANVIEW LEDs:

A CPU LED, for board status

RECEIVE, TRANSMIT, COLLISION, and STAND BY LEDs for each Ethernet port

A PWR LED for power status

2.2 RESET BUTTON

The front panel also has a RESET button that allows you to re-initializethe processor. Chapter 4,Troubleshooting, provides detailed descriptions of each NBR LANVIEW LED.

2.3 LCD DISPLAY

The NBR-420andNBR-620are equipped with an LCD Display located on the front panel. The LCD provides status information about the present as well as past condition of the hub. You can view power up diagnostics, firmware revisions, MAC addresses, IP addresses, and alarm messages. The LCD displays the most current event, but can store up to 25 past events in memory. To access stored messages, press the DISPLAY button located on front panel of the NBR. Refer to Chapter 4,Troubleshooting, for detailed information.

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NBR-SERIESInstallation Guide

CHAPTER 3

INSTALLATION

This chapter contains the following procedures:

Unpacking the NBR

Preparing the NBR for installation

Installing the NBR

Connecting the NBR to the power source

Connecting the NBR to the network

Only qualified personnel should perform installation procedures.

3.1 UNPACKING THE NBR

Unpack the NBR as follows:

1.Remove the packing material covering the NBR.

2.Carefully remove the NBR from the shipping box.

3.Visually inspect the NBR. If there are any signs of damage, contact Cabletron Systems Technical Support immediately.

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Chapter 3: Installation

3.2 PREPARING THE NBR FOR INSTALLATION

This section contains the following procedures:

Removing chassis cover

Setting mode switches

Setting NVRAM reset switch

Installing SIMM upgrades

Installing FLASH SIMMs

Installing LDRAM and SDRAM SIMMs

Adding/replacing EPIMs

Adding/replacing BRIMs

Testing the NBR

3.2.1 Removing Chassis Cover

This section describes how to remove the chassis cover from the NBR. Remove the chassis cover to install BRIMs, set the mode switch bank, and install SIMM memory upgrades.

Do not remove the cover from the NBR while power is applied to the unit.

Do not power up the unit, for any reason, until the cover and screws are in place. Hazardous voltages are present that could cause damage to the unit or personal injury.

The components and boards associated with the NBR are

!sensitive to static discharges. Be sure to use an antistatic wrist

strap and observe all static precautions during this procedure.CAUTION

Failure to do so could result in damage to the NBR.

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Preparing the NBR for Installation

To remove the chassis cover, perform the following steps (see Figure 3-1):

1.Disconnect the NBR from the network as follows:

a.Disconnect the power cord from the rear of the NBR.

b.Disconnect all network cables attached to the NBR. Note the ports to which these cables attach.

2.Use a Phillips-headscrewdriver to remove the seven screws that attach the chassis cover to the NBR. Place the screws aside.

Remove the chassis cover from the NBR.

Chassis Cover

Chassis

Cover Screw

1092_06

Figure 3-1Removing the Chassis Cover

Figure 3-2shows the top view of the NBR with the cover removed. It also shows the location of the mode switch bank, LDRAM slot, SDRAM slot, FLASH slot, NVRAM reset switch, and BRIM Ports.

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Chapter 3: Installation

FLASH

LDRAM

BRIM (PORT F)

SDRAM

 

BRIM (PORT E)

 

 

 

 

 

 

 

 

 

 

 

 

NVRAM

RESET SWITCH

NBR FRONT PANEL

MODE SWITCH BANK

OFF

ON

 

 

 

1

 

 

 

 

Cabletron Use Only

 

 

 

 

2

 

 

 

 

Cabletron Use Only

 

 

 

 

3

 

 

 

 

Cabletron Use Only

 

 

 

 

4

 

 

 

 

Cabletron Use Only

 

 

 

 

5

 

 

 

 

 

Baud Rate Default Switch (Off=9600, On=2400)

 

 

 

 

6

 

 

 

 

Forced Download Switch (This switch forces image file downloads.)

 

 

 

 

 

 

 

 

7

 

 

 

 

Cabletron Use Only

 

 

 

 

 

 

 

 

8

 

 

 

 

Password Default Switch (This switch clears passwords

 

 

 

 

 

 

 

 

 

 

 

 

 

stored in NVRAM.)

 

 

 

 

1092_07

Figure 3-2Switch, BRIM, and SIMM Locations

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Preparing the NBR for Installation

3.2.2 Setting Mode Switches

Never adjust switch settings while the NBR has power applied to it. Not only is this dangerous, but the change in position activates the switch function and after you reinstall or power cycle the NBR it will initiate the request.

Figure 3-2shows the location and factory default settings of the mode switches. Check these switches to ensure that they are in the correct position for normal NBR operation.

Switch definitions are as follows:

Switch 1 - Cabletron Systems use only.

Switch 2 - Cabletron Systems use only.

Switch 3 - Cabletron Systems use only.

Switch 4 - Cabletron Systems use only.

Switch 5 - Baud Rate Default. Allows you to set the Console port baud rate. The OFF position sets the baud rate to 9600. TheON position sets the baud rate to 2400. The default position isOFF.

!

CAUTION

Do not change the state of Switch 6 unless the following conditions exist:

You have a station acting as a BOOTP server, and a TFTP server that contains the NBR image file. The BOOTP server and the TFTP server could be different servers.

You intend to set up a station to act as a BOOTP server for the NBR.

Switch 6 - Forced Download. Changing the state of this switch (i.e., moving the switch from one position to another) forces the NBR to download an image file from the station acting as the TFTP server.

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After changing the state of this switch, and repowering the device, the NBR requests a new image until it either receives a new image, or you reset the NBR again by using the RESET button on the front panel.

After resetting the NBR, the device attempts to locate a BOOTP server again. However, the BOOTP request times out after about one minute, and the NBR boots from FLASH memory.

Switch 7 - Cabletron Systems use only.

Do not change the state of Switch 8 unless you want to reset

!the NBR user-configuredpasswords to their factory default

settings.CAUTION

Switch 8 - Password Defaults. Changing the state of this switch clears user-enteredpasswords stored in NVRAM, and restores default passwords. Once you reset the NBR, you can use the defaults orre-enteryour passwords.

3.2.3 Setting NVRAM Reset Switch

Do not change the state of the NVRAM switch unless you

!intend to reset the NBR user parameters to the factory default

settings.CAUTION

Figure 3-2shows the location of the NVRAM reset switch. The NBR uses NVRAM(Non-VolatileRandom Access Memory) to store user entered parameters such as IP address, device name, etc. Changing the state of this switch (i.e., moving the switch from one position to another) resets these parameters to the factory defaults.

After changing the state of the NVRAM reset switch, press the RESET button to use the factory defaults or to re-enteryour own parameters. These parameters are stored in NVRAM when the NBR is powered down, and remain there until the NVRAM switch is changed again.

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3.2.4 Installing SIMM Upgrades

The NBR allows memory upgrades for FLASH Electrically Erasable Programmable Read only Memory (FLASH EEPROM), Shared Dynamic Random Access Memory (SDRAM), and Local Dynamic Random Access Memory (LDRAM). This section explains how to locate and add or replace a Single In-lineMemory Module (SIMM) for any of these memory types.

NOTE

For additional information on SIMMs, contact Cabletron

Systems Technical Support.

Each memory type has a specific SIMM slot location on the NBR motherboard. See Figure 3-2for SIMM slot location. When installing SIMM boards, make sure that you place them in their proper slots.

3.2.4.1 Installing FLASH SIMMs

Installing a FLASH SIMM is a two step process. Refer to Figure 3-3and perform the following steps to install your FLASH SIMM.

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Chapter 3: Installation

 

SIMM Slot

Connector

Clips

Teeth

 

 

1

2

SIMM Slot

Post

 

 

SIMM

 

SIMM Hole

1092_08

Figure 3-3Installing a FLASH SIMM

Install a FLASH SIMM as follows:

The components and boards associated with the NBR are

!sensitive to static discharges. Be sure to use an antistatic wrist

strap and observe all static precautions during this procedure.CAUTION

Failure to do so could result in damage to the NBR.

1.Insert the SIMM between the connector teeth in the SIMM slot.

2.Pivot the SIMM back until it locks into the clips in the SIMM slot, and the SIMM holes fit over the SIMM slot posts.

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3.2.4.2 Installing LDRAM and SDRAM SIMMs

To install an LDRAM or SDRAM SIMM, see Figure 3-4and the steps below.

 

SIMM

SIMM Hole

 

 

Connector

 

Teeth

SIMM Slot

SIMM Slot

 

Post

Connector Clip

1092_09

Figure 3-4Installing an LDRAM or SDRAM SIMM

Install an LDRAM or SDRAM SIMM as follows:

The components and boards associated with the NBR are

!sensitive to static discharges. Be sure to use an antistatic wrist

strap and observe all static precautions during this procedure.CAUTION

Failure to do so could result in damage to the NBR.

1.Insert the SIMM between the connector teeth in the SIMM slot.

2.Pivot the SIMM back until it locks into the clips in the SIMM slot, and the SIMM holes fit over the SIMM slot posts.

3.2.5 Adding/Replacing EPIMs

This section contains procedures on how to add/replace an Ethernet Port Interface Module (EPIM) to upgrade or change the capabilities of your hub. See Figure 3-5.After installing your new EPIM, refer to appropriate EPIM sections in this chapter for connecting media types and to verify proper operation.

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Chapter 3: Installation

The components and boards associated with the NBR are

!sensitive to static discharges. Be sure to use an antistatic wrist

strap and observe all static precautions during this procedure.CAUTION

Failure to do so could result in damage to the NBR.

Install an EPIM as follows:

When removing an EPIM, make sure to pull the module straight

!out. Failure to do so could result in damage to the connector.

CAUT ION

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

2.Slide your new EPIM into place, making sure the connectors on the rear of the module and inside the HUB attach properly.

3.Fasten the EPIM to the NBR using the mounting screws.

LNK

EPIM-T

Port

A

Port

B

LNK

EPIM-T

1092_10

Figure 3-5Installing an EPIM

3.2.6 Adding/Replacing BRIMs

To add or replace Bridge/Router Interface Modules (BRIMs) in the NBR-420andNBR-620,refer to the applicableBRIM User’s Guide.

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3.2.7 Testing the NBR

Before installing the NBR in a live network, test the hub in a controlled situation to ensure that it is bridging packets. Perform this test with two workstations (see Figure 3-6),as follows:

1.Connect the first workstation to an NBR EPIM or BRIM.

2.Connect the second workstation to an NBR EPIM or BRIM.

3.Assign a valid IP address to the NBR using Local Management.

4.Designate the first workstation as a file server and the second one as the client. Refer to the workstation manuals for establishing one as a file server and one as a client.

5.Send packets between the two workstations to verify the proper operation of the NBR.

NOTE

A “ping” test of the other workstation verifies the NBR is

operating properly.

If a failure occurs, see Chapter 4 for troubleshooting instructions.

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Chapter 3: Installation

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

T1/FT1

SYNC

 

 

 

 

BRIM-WT1

PORT E

BRIM-A100

 

 

PORT F

 

 

PORT D

PORT C

PORT B

PORT A

1092_11

Figure 3-6InstallationCheck-out

3.3 INSTALLING THE NBR

You can install the NBR on any horizontal surface. In addition, Cabletron Systems provides an accessory kit with the NBR that includes hardware to install the NBR in a 19-inchrack. Select one of the following subsections and perform the steps that are applicable for your installation.

If you decide not to install the NBR in a 19-inchrack, the following requirements must be met when selecting a location:

NOTE

Ensure that you select a location within reach of the network

cabling.

An unrestricted free surface area at least 21 inches wide, 18 inches deep and 6 inches high is needed.

A single phase, grounded power receptacle must be located within 7 feet of the site.

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Installing the NBR

If a shelving unit is to be used, it must be able to support 30 pounds (13.6 kg) of static weight.

The temperature for the selected location must be maintained between 5° and 40°C, and less than 10°C per hour temperature change.

3.3.1 Attaching the Strain-ReliefBracket

Attach the strain-reliefbracket to the front of the NBR as follows:

1.Remove the strain-reliefbracket and four8-32x3/8-inchscrews from the NBR installation kit.

Use only the appropriate screws to attach the strain relief. Use of longer screws may cause damage to the unit or electrical shock.

2.Attach the strain-reliefbracket to the bottom of the NBR as shown in Figure3-7.

Strain-Relief

Bracket

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

 

 

 

 

PORT F

PORT E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT D

 

PORT C

 

PORT B

 

PORT A

Strain-Relief

Screws (4)

1092_12

 

Figure 3-7Attaching theStrain-ReliefBracket

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Chapter 3: Installation

3.3.2 Rack Mounting the NBR

Install the NBR in a 19-inchrack as follows:

1.Remove four cover screws (two from each side) located along the front edges of each side of the NBR. See Figure 3-8.

2.Using the four 6-32x3/8-inchreplacement flathead screws, attach the rack mounting brackets to each end of the NBR.

Rack Mounting

Brackets (2)

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

 

 

 

 

PORT F

PORT E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT D

 

PORT C

 

PORT B

 

PORT A

1092_02

Screws (4)

Figure 3-8Rackmount Brackets Installation

3.With the mounting brackets attached, position the NBR between the vertical frame members of the 19-inchrack and fasten it securely with the mounting screws. See Figure3-9.

19-InchRack

NBR-620 MULTI PORT BRIDGE ROUTER

WITH

LANVIEW®

 

 

 

 

 

 

PORT F

PORT E

 

 

 

PORT D

PORT C

PORT B

PORT A

Screws (4)

1092_13

Figure 3-9Installing the NBR in the Rack

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Connecting the NBR to the Power Source

3.3.3 Free-StandingInstallation

For a free-standingshelf or tabletop installation, locate the NBR within 7 feet of its power source and with an unrestricted free surface area

21 inches wide, 18 inches deep and 6 inches high, as shown in Figure 3-10.

18 IN.

21 IN.

 

 

 

 

 

 

NBR-620 MULTI PORT BRIDGE ROUTER WITH LANVIEW®

 

 

 

 

6 IN.

PORT F

PORT E

 

 

 

 

 

 

PORT D

PORT C

PORT B

PORT A

7 FT.

 

 

 

 

Figure 3-10Free-StandingInstallation

3.4 CONNECTING THE NBR TO THE POWER SOURCE

NOTE

The NBR has a universal power supply. This allows you to

connect the NBR to power sources from 100 Vac to 125 Vac or

 

200 Vac to 250 Vac, 50/60 Hz.

Connect the NBR to the power source as follows:

1. Plug the power cord into a grounded wall outlet.

NOTE

It may take several minutes for the NBR to boot up. While

booting, the NBR displays boot-updiagnostics through Local

 

Management. Refer to the NBR-220,NBR-420,andNBR-620

 

Local Management Guide for additional information on how to

 

connect and configure a Local Management console.

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2.Observe the status of the LANVIEW LEDs on the NBR. When the CPU LED is flashing, the STAND BY LEDs indicate the boot state of the NBR. During this period (up to 5 minutes), the LEDs cycle through a series of internal diagnostics. Figure 3-11shows the LEDs.

LANVIEW LEDs

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

 

 

 

RECEIVE

 

 

 

TRANSMIT

 

 

PWR

COLLISION

 

 

 

DISPLAY RESET

 

CPU

STAND BY

COM 2

COM 1

 

D C B A PORT

1092_03

Figure 3-11NBR LANVIEW LEDs

After the system boot procedure, the LEDs should be in the following conditions:

PWR LED on, indicating that the NBR is receiving power.

CPU LED flashing green, indicating proper NBR operation.

STAND BY (A, B, C, D) LEDs ON or OFF, depending on the port’s position in the Spanning Tree Algorithm.

Appropriate EPIM/BRIM LEDs ON:

-Refer to Section 3.5, Connecting the NBR to the Network, for appropriate LED status for individual EPIMs.

-Refer to individual BRIM Guides for BRIM LED status.

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3.5 CONNECTING THE NBR TO THE NETWORK

This section gives procedures for connecting the NBR to the network using the various EPIMs available.

Once you have successfully powered up your NBR, you can add network connections. The procedure for connecting Ethernet segments to a hub varies depending on the media and ports you connect. Refer to the following list and perform the procedure described in the subsection(s) that apply to your hub:

EPIM-T

3.5.1

EPIM-X

3.5.2

EPIM-F1,F2, F3

3.5.3

EPIM-C

3.5.4

EPIM-A

3.5.5

3.5.1 Connecting a Twisted Pair Segment to an EPIM-T

Before connecting a segment to the EPIM-T,check each end of the segment to determine wire crossover. If the wires do not cross over, use the switch on theEPIM-Tto internally cross over the RJ45 port. Refer to Figure3-12to properly set theEPIM-Tcrossover switch.

Position X (crossed over)

1. RX+

5. NC

2. RX-

6. TX-

3. TX+

7. NC

4. NC

8. NC

Position =

(not crossed over)

1. TX+

5.

NC

 

2. TX-

6.

RX-

 

3. RX+

7. NC

 

4. NC

8. NC

1092_14

Figure 3-12EPIM-TCrossover Switch

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Connect an EPIM-Tto a Twisted Pair Segment as follows:

1.Connect the twisted pair segment to the module by inserting the RJ45 connector on the twisted pair segment into the RJ45 port on the module. See Figure 3-12.

2.Check that the LNK LED for the port is on. If the LED is not on, perform each of the following steps until it is:

a.Check that the 10BASE-Tdevice at the other end of the twisted pair segment is powered.

b.Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts. Figure 3-13shows the RJ45 pinouts.

NOTE:

RX+/RX– and TX+/TX– must share a common color pair.

 

EPIM-T

 

 

 

 

TO

 

 

 

 

10BASE-TDevice

RJ45 Port

 

 

 

 

Port

 

 

 

 

 

 

 

 

 

 

RX+

 

1

 

 

 

 

 

1

RX+

RX–

 

2

 

 

 

 

 

2

RX–

TX+

 

3

 

 

 

 

 

3

TX+

TX–

 

6

 

 

 

 

 

6

TX–

 

 

 

 

 

RJ-45toRJ-45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1574-30

Figure 3-13Cable Pinouts -EPIM-TRJ45 Port

c.Check the cable for continuity.

d.Check that the twisted pair connection meets dB loss and cable specifications outlined in Section C.1.1, 10BASE-T Twisted Pair Network.

If you still cannot establish a link, contact Cabletron Systems Technical Support.

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3.5.2 Connecting an AUI Cable to an EPIM-X

The signal quality error (SQE) switch remains in the OFF

!position for most network connections. However, some Data

Terminal Equipment (DTE) requires SQE. Refer to your DTECAUTION

manual for SQE requirement information.

Connect an EPIM-Xto a device not requiring SQE as follows:

1.Check that the SQE LED on theEPIM-Xis OFF. If theSQE LED is ON, check the position of the SQE switch.

NOTE

If the SQE light remains on, even though the SQE switch is in

the OFF position, contact Cabletron Systems Technical

 

Support.

2.Attach one end of an AUI cable, no longer than 50 meters in length, to the port located on the EPIM-X(Figure3-14)and the other end to the intended node.

ON Position

 

ON

(Toward Back

 

of EPIM)

 

OFF Position

(Toward Front

of EPIM)

OFF

1092_16

Figure 3-14TheEPIM-X

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3.5.3Connecting a Fiber Optic Cable to an EPIM-F1/F2orEPIM-F3

When connecting a fiber optic link segment to an EPIM-F1/F2orEPIM-F3keep the following in mind:

A full alignment sleeve damages the receive port. SMA 905

!connectors do not need alignment sleeves.

CAUT ION

When connecting a fiber optic link segment with SMA 906 connectors to an EPIM-F1with SMA ports, make sure each connector uses half alignment, NOT full alignment sleeves.

When connecting a fiber optic link segment with ST connectors to an EPIM-F2with ST ports, keep in mind that ST connectors attach to ST ports. Insert the connector into the port with the alignment key on the connector inserted into the alignment slot on the port. Turn the connector to lock it down.

The physical communication link consists of two strands of fiber optic cabling: the Transmit (TX) and the Receive (RX). The Transmit strand from a module port connects to the Receive port of a fiber optic Ethernet device at the other end of the segment (i.e., TX of the applicable port on the module goes to RX of the other fiber optic device). The Receive strand of the applicable port on the module connects to the Transmit port of the fiber optic Ethernet device (i.e., RX of the applicable port on the module goes to TX of the other fiber optic device).

We recommend that you label the fiber optic cables to indicate Receive and Transmit ends. Cabletron Systems prelabels its cable. At one end of the cable, one fiber is labeled 1, and the other fiber is labeled 2. This pattern repeats at the other end of the cable. If you did not purchase your cable from Cabletron Systems, be sure to label your cable in this manner.

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

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

Contamination of cable ends causes problems in dataCAUTION

transmissions. If necessary, clean contaminated cable ends using alcohol and a soft, clean, lint-freecloth.

Connect a fiber optic link segment to an EPIM-F1/F2or anEPIM-F3as follows:

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

2.Attach the fiber labeled 1 to the applicable receive port, labeled RX, on the module (Figure 3-15).

F1/F2

ST Connectors

F1/F2

SMA 906 Connectors w/

Half Alignment Sleeves

SMA 905 Connectors

F3

ST Connectors

1092_17

Figure 3-15TheEPIM-F1/F2andEPIM-F3

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Chapter 3: Installation

3.Attach the fiber labeled 2 to the applicable transmit port labeled TX, on the module.

4.At the other end of the fiber optic cable, attach the fiber labeled 1 to the transmit port of the device.

5.Attach the fiber labeled 2 to the receive port.

6.Check that the LNK LED on the applicable module port is on. If the LED is not on, perform each of the following steps until it is:

a.Check that the device at the other end of the link is on.

b.Verify proper “crossover” of fiber strands between the applicable port on the module and the fiber optic device at the other end of the fiber optic link segment.

c.Verify that the fiber connection meets the dB loss specifications outlined in Section C.1.2, Multimode Fiber Optic Network.

If you still cannot establish link, contact Cabletron Systems Technical Support.

3.5.4 Connecting a Thin-NetSegment to anEPIM-C

Connect a thin-netsegment to anEPIM-Cas follows:

1.Set the Internal Termination Switch (see Figure 3-16),located to the right of the port and labeled TERM, to either of the following positions:

The ON position () to internally terminate thethin-netsegment at the port.

The OFF position () if you do not want thethin-netsegment to internally terminate at the port.

2.If the Internal Termination switch is in the ON position, connect thethin-netsegment directly to the BNC port.

3.If the Internal Termination switch is in the OFF position, perform the following steps:

a.Attach a BNCtee-connectorto the BNC port on the module.

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b.Attach the thin-netsegment to one (1) of the female connectors on thetee-connector.

Failure to terminate each tee-connectorsegment may result in

!improper segment operation.

CAUTION

c.Attach another thin-coaxsegment or a terminator to the other female connector on thetee-connector.

When internal termination switch is set to off ():

Connect BNC tee-connectorto port.

Attach a terminator or terminated thin-netsegment to one female connector oftee-connector.

Connect a terminated thin-netsegment to other female connector oftee-connector.

Attach thin-netsegment directly to BNC connector when internal termination switch is set to on ().

1092_18

Figure 3-16TheEPIM-C

3.5.5 Connecting an AUI Cable to an EPIM-A

!

Ensure that the external transceiver to which you connect the

EPIM-Adoes not have the signal quality error (SQE or

CAUTION

“heartbeat”) test function enabled. The EPIM does not operate

 

if the transceiver has the SQE test function enabled. Refer to

 

the applicable transceiver manual for additional information.

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Chapter 3: Installation

Connect an EPIM-Ato an external network segment as follows:

1.Check that the PWR LED on theEPIM-Ais on. If thePWR LED is off, contact Cabletron Systems Technical Support.

2.Attach an external transceiver to the network segment intended for AUI port connection. For additional information, refer to the applicable transceiver manual.

3.Attach an AUI cable, no longer than 50 meters in length, to the transceiver you connected to the network in Step 2.

4.Connect the AUI cable to the AUI port located on the EPIM-A.See Figure3-17.

1092_19

Figure 3-17TheEPIM-A

5.Lock the AUI connector into place using the connector slide latch.

6.If the transceiver PWR LED is off with the AUI cable connected, perform the following steps:

a.Check the AUI connections for proper pinouts. Appendix B lists the pinouts for the transceiver connection.

b.Check the cable for continuity.

c.Reconnect the AUI cable to the NBR and the device.

If the transceiver PWR LED remains off, contact Cabletron Systems Technical Support.

Page 3-24

NBR-SERIESInstallation Guide

CHAPTER 4

TROUBLESHOOTING

This chapter provides information for troubleshooting network and NBR operational problems. The following sections describe the LANVIEW LEDs, provide a troubleshooting checklist, and explain how to use the LCD and the RESET button.

4.1 USING LANVIEW

The NBR uses the Cabletron Systems built-invisual diagnostic and status monitoring system called LANVIEW. With LANVIEW, you can quickly scan the LEDs to observe network status or diagnose network problems.

LANVIEW LEDs

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

 

 

 

RECEIVE

 

 

 

TRANSMIT

 

 

PWR

COLLISION

 

 

 

DISPLAY RESET

 

CPU

STAND BY

COM 2

COM 1

 

D C B A PORT

1092_03

Figure 4-1LANVIEW LEDs

NBR-SERIESInstallation Guide

Page 4-1

Chapter 4: Troubleshooting

Table 4-1LANVIEW LEDs

LED

Color

Description

Error Condition/

Recommended Action

 

 

 

 

 

 

 

 

 

 

 

PWR

Green

Indicates that the

If OFF, check the input power

 

 

NBR is receiving

source (circuit breaker, fuse,

 

 

power.

etc.).

 

 

 

 

CPU

Multi-

Flashing Green,

If OFF, Red, or Yellow the

 

Color

indicates that the

board has a problem.

 

 

NBR is operating

 

 

Green

properly.

Press the RESET button on

 

 

 

the NBR front panel to

 

Yellow

 

re-initializethe board. If the

 

 

 

board does not re-initialize,

 

Red

 

it has probably failed. Call

 

 

 

Cabletron Systems Technical

 

 

 

Support.

 

 

 

 

RECEIVE

Yellow

Light flashes to

If none of the receive LEDs

A, B, C, D

 

indicate that a

are flashing, the NBR is not

 

 

segment is

receiving frames on any of

 

 

receiving a frame.

the segments.

 

 

 

Ensure that all connected

 

 

 

ports are enabled.

 

 

 

 

TRANSMIT

Green

Light flashes to

If none of the transmit LEDs

A, B, C, D

 

indicate that a

are flashing, the NBR is not

 

 

segment is

transmitting frames on any of

 

 

transmitting a

the segments.

 

 

frame.

 

 

 

If not connected to

Contact Cabletron Systems

 

 

the LAN, the LED

Technical Support for

 

 

flashes every two

assistance.

 

 

seconds to indicate

 

 

 

it is transmitting

 

 

 

BPDU frames.

 

 

 

 

 

Page 4-2

NBR-SERIESInstallation Guide

 

 

 

 

Using LANVIEW

 

 

Table 4-1LANVIEW LEDs (Continued)

 

 

 

 

 

 

 

LED

Color

Description

Error Condition/

 

 

Recommended Action

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COLLISION

Red

Collision detected

Excessive flashing, or a solid

 

 

A, B, C, D

 

on a segment.

light, indicates an inordinate

 

 

 

 

When the LAN is

number of collisions. This

 

 

 

 

operating properly,

may be normal if there is a

 

 

 

 

occasional flashing

high amount of traffic.

 

 

 

 

is normal.

 

 

 

 

 

 

Ensure that the SQE test is

 

 

 

 

 

disabled for any transceiver

 

 

 

 

 

connected to the external

 

 

 

 

 

channels (A, B, C, or D) of

 

 

 

 

 

the NBR. Check cabling for

 

 

 

 

 

data loops or defective

 

 

 

 

 

cables.

 

 

 

 

 

 

 

 

STAND BY

Yellow

Indicates packets

Network Management has

 

 

A, B, C, D

 

cannot be

placed the NBR in a Standby

 

 

 

 

forwarded as the

mode; a data loop condition

 

 

 

 

Spanning Tree

exists.

 

 

 

 

Algorithm has put

 

 

 

 

 

the corresponding

Check with your Network

 

 

 

 

Bridge Port into a

Administrator to find out if the

 

 

 

 

standby mode.

NBR was placed in Standby

 

 

 

 

 

intentionally.

 

 

 

 

 

 

 

NBR-SERIESInstallation Guide

Page 4-3

Chapter 4: Troubleshooting

4.2 TROUBLESHOOTING CHECKLIST

If your NBR is not operating properly, the following checklist describes some of the problems that may occur, possible causes for the problem, and suggestions for resolving the problem.

Table 4-2Troubleshooting Checklist

Problem

Possible Causes

Recommended

Action

 

 

 

 

 

 

 

 

No LEDs on.

Loss of Power.

Check that the NBR has

 

 

adequate power.

 

NBR not properly

Verify proper

 

installed.

installation, and check

 

 

to see that the PWR

 

 

LED is green.

 

 

 

No Local Management

Terminal setup is not

Refer to your NBR

Password screen.

correct.

Local Management

 

 

Guide for proper setup

 

 

procedures.

 

Improper console cable/

Refer to your NBR

 

UPS cable pinouts.

Local Management

 

 

Guide for proper

 

 

console/ UPS port

 

 

pinouts.

 

 

 

Cannot contact the

Improper Community

Refer to your NBR

NBR from in-band

Names Table.

Local Management

management.

 

Guide for Community

 

NBR does not have an

Names Table setup and

 

IP address.

IP address assignment

 

 

procedures.

 

No link to device.

Check link to device.

 

 

 

Page 4-4

NBR-SERIESInstallation Guide

 

Troubleshooting Checklist

Table 4-2Troubleshooting Checklist (Continued)

 

 

 

Problem

Possible Causes

Recommended

Action

 

 

 

 

 

 

 

 

User parameters (IP

NVRAM reset switch

See Chapter 3 for

address, Device and

has been toggled and

proper use of the

Module name, etc.) are

user-entered

NVRAM switch.

lost when device is

parameters have been

 

powered down.

reset to factory default.

 

 

NVRAM may be

If NVRAM is defective,

 

defective.

call Cabletron Systems

 

 

Technical Support.

 

 

 

No power to an external

AUI cable may be

Replace AUI cable.

transceiver connected

defective.

 

to an EPIM-A.

 

 

 

Transceiver may be

Replace transceiver.

 

defective.

 

 

EPIM is defective.

Replace EPIM.

 

 

 

High number of

External transceiver

Disable SQE.

collisions on EPIM port.

has SQE enabled.

 

 

 

 

Port(s) go into standby

Configurations where

Discuss these

for no apparent reason.

devices connect across

configurations with

 

NBR channels can

Cabletron Systems

 

cause the NBR to

Technical Support

 

detect a looped

before implementing

 

condition.

them into your network.

 

 

 

NBR-SERIESInstallation Guide

Page 4-5

Chapter 4: Troubleshooting

4.3 USING THE LCD

The NBR-420andNBR-620are equipped with a front panel LCD as shown inFigure 4-2.The LCD provides network statistics and diagnostic information such as Power up diagnostics, Revision levels, MAC and IP Addresses, and Error Alerts.

RESET

Button LCD

NBR-620 MULTI PORT BRIDGE ROUTERWITH LANVIEW®

 

 

 

RECEIVE

 

 

 

TRANSMIT

 

 

PWR

COLLISION

 

 

 

DISPLAY RESET

 

CPU

STAND BY

 

 

COM 2

COM 1

 

D C B A PORT

DISPLAY

 

 

1092_04

Button

 

 

 

Figure 4-2

The LCD

Five types of messages appear on the LCD:

Unsaved Initialization messages

Static System messages

Alarm messages

Saved System messages

Failure or Error messages

Sections 4.3.1 through 4.3.5 describe each type of LCD message and provide instructions for displaying them.

Page 4-6

NBR-SERIESInstallation Guide

Using the LCD

4.3.1 Unsaved Initialization Messages

Unsaved Initialization messages are generated during power-upand appear as the event occurs. These messages track the boot up sequence. They are not saved and cannot be recalled.

Cabletron

Cabletron

Hardware Init

Boot From Flash

Cabletron

Cabletron

BOOTP Discovery

RARP Req. State

Cabletron

Cabletron

TFTP Req. State

TFTP in Progress

Cabletron

Cabletron

TFTP Complete

Erasing Flash

Cabletron

Cabletron

Programming Flash

Flash Programmed

Cabletron

Cabletron

Boot Complete

Test in Progress

4.3.2 Static System Messages

Static System messages provide NBR configuration information. The product name must be displayed on the LCD before you can start stepping through the messages in the sequence shown in this section.

NOTE

Whether you are displaying Static System messages, Alarm

messages, or Saved System messages, the display returns to

 

the product name display 20 seconds after the last operation of

 

the DISPLAY button.

To Display the Messages

With the product name displayed, momentarily press the DISPLAY button to step to the first message. Each time you press the DISPLAY button, the next message is displayed until the last message. Then the display automatically exits to the product name.

NBR-SERIESInstallation Guide

Page 4-7

Chapter 4: Troubleshooting

To Exit

There are three ways to exit the Static System messages:

From the last Static System message

Momentarily press the DISPLAY button while the last message “COM 2 Port Function xxxxx” is displayed. The display automatically returns to the product name.

Automatic 20-secondexit

Allow 20 seconds to elapse after the last DISPLAY button operation. The display returns to the product name.

Jump to Alarm messages

Press and hold the DISPLAY button for 3 seconds. When released, the display steps to the Alarm message described in Section 4.3.3.

Displayed Messages

Comments

 

 

 

 

Host IP Address

Displays the IP address of the NBR.

xxx.xxx.xxx.xxx

Can change IP address in Local Management.

 

 

MAC Address

Displays the MAC address of channels A, B, C, D,

00001dxxxxx

E, or F.

 

 

RAM Image

Displays the revision number of the FLASH

Rev. xx.xx.xx

EEPROM.

 

 

Boot PROM

Displays the revision number of the internal Boot

Rev. xx.xx.xx

PROM.

 

 

Flash Programmed

Displays the number of times a new software

xx Times

load to FLASH occurs.

 

 

COM 1 Port

Displays the baud rate set in Local Management.

Baud Rate xxxxx

 

 

 

COM 1 Port

Displays the current function of the COM 1 Port

Function xxxxx

(OFFLINE, UPS, CONSOLE).

 

 

COM 2 Port

Displays the baud rate for COM 2 port.

Baud Rate xxxxx

 

 

 

COM 2 Port

Displays the current function of the COM 2 Port

Function xxxxx

(OFFLINE, UPS, CONSOLE).

 

 

Page 4-8

NBR-SERIESInstallation Guide

Using the LCD

4.3.3 Alarm Messages

Alarm messages pertain to events that occur within the NBR. The messages that can be displayed are shown in this section.

NOTE

Whether you are displaying Static System messages, Alarm

messages, or Saved System messages, the display returns to

 

the product name display 20 seconds after the last operation of

 

the DISPLAY button.

To Display the Messages

There are two ways to gain access and display the Alarm messages:

From the product name display

Press and hold the DISPLAY button for 3 seconds while the product name is displayed. When the button is released, the display steps to the saved Alarm messages. Thereafter, each time you press the DISPLAY button, the next message is displayed.

From a Static System message display

Press and hold the DISPLAY button for 3 seconds while a Static System message is displayed. When the button is released, the display steps to the Alarm messages described. Thereafter, each time you press the DISPLAY button, the next message is displayed.

To Exit

There are two ways to exit the Alarm messages:

Automatic 20-secondexit

Allow 20 seconds to elapse after the last DISPLAY button operation. The display returns to the product name.

Jump to Saved System messages

Press and hold the DISPLAY button for 3 seconds. When released, the display steps to the Saved System message described in Section 4.3.4.

NBR-SERIESInstallation Guide

Page 4-9

Chapter 4: Troubleshooting

Displayed Messages

Comments

 

 

 

 

Port xxxxxx

Displays the link status of ports A, B, C, D, E, or F.

Link Established

 

 

 

Port xxxxxx

Displays the link status of ports A, B, C, D, E, or F.

Not Linked

 

 

 

Network/Port x

Displays installation status of ports A, B, C, or D.

EPIM Inserted

 

 

 

Network/Port x

Displays installation status of ports A, B, C, or D

EPIM Removed

 

 

 

Bridge Port x

Indicates Bridge port A, B, C, or D in Stand By

Stand By

mode.

 

 

Bridge Port x

Indicates Bridge port A, B, C, or D On Line.

On Line

 

 

 

No Messages in

No Alarm messages.

Queue x

 

 

 

4.3.4 Saved System Messages

Saved System messages are device related startup or boot strap messages, BOOTP/TFTP host, or startup error messages. The following messages can be displayed:

TFTP Host

TFTP File

xxx.xxx.xxx.xxx

xxxxxxxxxxxxxxxx

Last Host Used

Last File Used

xxx.xxx.xxx.xxx

xxxxxxxxxxxxxxx

NOTE

Whether you are displaying Static System messages, Alarm

messages, or Saved System messages, the display returns to

 

the product name display 20 seconds after the last operation of

 

the DISPLAY button.

To Display Messages

There are two ways to access and display the Saved System messages:

Page 4-10

NBR-SERIESInstallation Guide

Using the LCD

From the product name display

Press and hold the DISPLAY button for 3 seconds while the product name is displayed. When the button is released, the display steps to the Alarm messages. Then press and hold the DISPLAY button for another 3 seconds. When the button is released, the display steps to the first Saved System message. Thereafter, each time you press the DISPLAY button, the next Saved System message is displayed.

From an Alarm message display

Press and hold the DISPLAY button for 3 seconds while an Alarm message is displayed. When released, the display steps to one of the Saved System messages. Thereafter, each time you press the DISPLAY button, the next Saved System message is displayed.

To Exit

There are two ways to exit the Saved System messages:

Automatic 20-secondexit

Allow 20 seconds to elapse after the last DISPLAY button operation. The display returns to the product name.

From any displayed System message

Press and hold the DISPLAY button for 3 seconds. When released, the display automatically returns to the product name.

NBR-SERIESInstallation Guide

Page 4-11

Chapter 4: Troubleshooting

4.3.5 Failure or Error Messages

Failure or Error Messages appear when an unrecoverable condition occurs. These messages are not saved and cannot be recalled by using the DISLAY button. When one of these messages appear call Cabletron Systems Technical Support.

The Failure or Error messages are as follows:

Cabletron

Cabletron

Ctrl. Reg. Err.

BBRAM Failure

Cabletron

Cabletron

SDRAM Failure

Modem SCC Error

Cabletron

Cabletron

SONIC Failure

Bit Swap Failure

Cabletron

Cabletron

Console SCC Error

LDRAM Failure

Cabletron

 

82C54 Failure

 

4.4 USING THE RESET BUTTON

The NBR incorporates a recessed RESET button. See Figure 4-2.This RESET button initializes the NBR processor. To use the RESET button, use a pen or pencil to press the button in. When this is done, the NBR initializes itself.

Page 4-12

NBR-SERIESInstallation Guide

APPENDIX A

NBR SPECIFICATIONS

This appendix provides the operating specifications for the Cabletron Systems NBR. Cabletron Systems reserves the right to change these specifications at any time without notice.

A.1 OPERATING SPECIFICATIONS

FLASH Memory:

2 MB

Shared Memory:

4 MB (expandable to 12 MB)

Internal Processor:

Intel 80960 running at 24 MHz

Read Only Memory:

128 K

Non-VolatileRAM:

128 K

Ethernet Controller:

4 DP83932 Controllers

CPU Memory:

8 MB (expandable to 12 MB)

NBR-SERIESInstallation Guide

Page A-1

Appendix A: NBR Specifications

A.2

COM PORT PINOUTS

 

COM 1 PORT PINOUTS

 

 

 

 

 

Type:

 

Standard RJ45 port

 

Pin

1

Transmit Data (XMT)

From COM 1 Port

 

2

Data Carrier Detect (DCD)

From COM 1 Port

 

3

Data Set Ready (DSR)

To COM 1 Port

 

4

Receive Data (RCV)

To COM 1 Port

 

5

Signal Ground (GND)

 

 

6

Data Terminal Ready (DTR)

From COM 1 Port

 

7

Request To Send (RTS)

To COM 1 Port

 

8

Clear To Send (CTS)

 

COM 2 PORT PINOUTS

 

 

 

 

 

Type:

 

Standard RJ45 port

 

Pin

1

Transmit Data (XMT)

From COM 2 Port

 

2

Data Carrier Detect (DCD)

From COM 2 Port

 

3

Data Set Ready (DSR)

To COM 2 Port

 

4

Receive Data (RCV)

To COM 2 Port

 

5

Signal Ground (GND)

 

 

6

Data Terminal Ready (DTR)

From COM 2 Port

 

7

Request To Send (RTS)

To COM 2 Port

 

8

Clear To Send (CTS)

 

COM PORT (NBR-220Only) PINOUTS

 

 

 

 

 

Type:

 

Standard RJ45 port

 

Pin

1

Transmit Data (XMT)

From COM Port

 

2

Data Carrier Detect (DCD)

From COM Port

 

3

Data Set Ready (DSR)

To COM Port

 

4

Receive Data (RCV)

To COM Port

 

5

Signal Ground (GND)

 

 

6

Data Terminal Ready (DTR)

From COM Port

 

7

Request To Send (RTS)

To COM Port

 

8

Clear To Send (CTS)

 

Page A-2

NBR-SERIESInstallation Guide

 

 

Physical Properties

A.3 PHYSICAL PROPERTIES

 

Dimensions:

 

7.2H x 43.6W x 34.6D (cm)

 

 

2.8H x 17W x 13.5D (in)

Weight (unit):

 

3.18 kg (7 lbs)

A.4 ENVIRONMENTAL REQUIREMENTS

Operating Temperature:

 

5° to 40°C (41° to 104°F)

Non-operatingTemperature:

-30°to 90°C(-22°to 194°F)

Operating Humidity:

 

5% to 95% (non-condensing)

A.5 CERTIFICATION

 

Safety:

UL 1950, CSA C22.2 No. 950, EN 60950, and

 

IEC 950

 

Emission:

FCC Part 15 Class A, VCCI Class 1, and

 

EN 55022 Class A

Immunity:

EN 50082-1

 

A.6 POWER SUPPLY REQUIREMENTS

NOTE

The NBR has a universal power supply. This unit allows you to

use an input power from 100 to 125 Vac or 200 to 250 Vac,

 

50/60 Hz.

The power supply has two outputs of 5 volts and 12 volts. The maximum output power is 125 watts and the minimum efficiency is 65% under all conditions of line at full load. The minimum and maximum load current from each output is shown below.

Output

Min. Load

Max. Load

Max. Power

5 Volts

1.00 Amps

15 Amps

75 Watts

12 Volts

0.15 Amps

4 Amps

48 Watts

NBR-SERIESInstallation Guide

Page A-3

APPENDIX B

EPIM SPECIFICATIONS

B.1 EPIM SPECIFICATIONS

EPIMs enable the connection of the NBR to different media types. Cabletron Systems offers a variety of EPIMs. The following sections explain specifications for each EPIM.

B.2 EPIM-T

The EPIM-Tis an RJ45 connector supporting UTP cabling. It has an internal Cabletron SystemsTPT-T10BASE-TTwisted Pair Transceiver.

The slide switch on the EPIM-Tdetermines thecross-overstatus of the cable pairs. If the switch is on theX side, the pairs are internally crossed over. If the switch is on the= side, the pairs are not internally crossed over. FigureB-1shows the pinouts for theEPIM-Tin both positions.

Position X (crossed over)

1. RX+

5. NC

2. RX-

6. TX-

3. TX+

7. NC

4. NC

8. NC

 

 

Position = (not crossed over)

1. TX+

5.

NC

2. TX-

6.

RX-

3. RX+

7. NC

4. NC

8. NC

1092_20

Figure B-1Crossover Switch on theEPIM-T

NBR-SERIESInstallation Guide

Page B-1

Appendix B: EPIM Specifications

B.3 EPIM-F1/F2

The EPIM-F1andEPIM-F2shown in FigureB-2support Multimode Fiber Optic cabling. Each EPIM has an internal Cabletron SystemsFOT-FFiber Optic Transceiver. TheEPIM-F1is equipped with SMA Connectors and theEPIM-F2is equipped with ST Connectors. Specifications for the EPIMs are listed below.

 

 

 

 

1092_22

 

Figure B-2EPIM-F1andEPIM-F2

 

 

 

 

 

 

 

Typical

Worst

Worst

Typical

Parameter

Case

Value

Case

Budget

 

Budget

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receive

 

 

 

 

Sensitivity

-30.5dBm

-28.0dBm

 

 

 

 

 

Peak Input Power

-7.6dBm

-8.2dBm

 

 

 

 

 

Transmitter Power

 

 

 

 

 

 

 

 

 

50/125 m fiber

-13.0dBm

-15.0dBm

13.0 dB

17.5 dB

 

 

 

 

 

62.5/125 m fiber

-10.0dBm

-12.0dBm

16.0 dB

20.5 dB

 

 

 

 

 

100/140 m fiber

-7.0dBm

-9.0dBm

19.0 dB

23.5 dB

 

 

 

 

 

Error Rate

Better than 10-10

 

 

 

 

 

 

 

The transmitter power levels and receive sensitivity levels listed are Peak Power Levels after optical overshoot. Use a Peak Power Meter to compare the values given above to those measured on any particular port. If Power Levels are being measured with an Average Power Meter, add 3 dBm to the measurement to compare the measured values to the values listed (i.e., -33.5dBm average + 3 dBm=-30.5dBm peak).

Page B-2

NBR-SERIESInstallation Guide

EPIM-F3

B.4 EPIM-F3

The EPIM-F3shown in FigureB-3supports Single Mode Fiber Optic cabling. It has an internal Cabletron SystemsFOT-FFiber Optic Transceiver and is equipped with ST Connectors. Specifications for theEPIM-F3are listed below.

1092_23

Figure B-3EPIM-F3

Transmitter Power decreases as temperatures rise and increases as temperatures fall. Use the Output Power Coefficient to calculate increased or decreased power output for the operating environment. For example, the typical power output at 25°C is -16.4dBm. For a 4°C temperature increase, multiply the typical coefficient(-0.15dBm) by four and add the result to typical output power (4 x-0.15dBm +-16.4=-17.0).

NBR-SERIESInstallation Guide

Page B-3

Appendix B: EPIM Specifications

Parameter

Typical

Minimum

Maximum

 

 

 

 

 

 

 

 

Transmitter Peak

1300 nm

1270 nm

1330 nm

Wave Length

 

 

 

 

 

 

 

Spectral Width

60 nm

-

100 nm

 

 

 

 

Rise Time

3.0 ns

2.7 ns

5.0 ns

 

 

 

 

Fall Time

2.5 ns

2.2 ns

5.0 ns

 

 

 

 

Duty Cycle

50.1%

49.6%

50.7%

 

 

 

 

Bit Error Rate

Better than 10-10

 

 

 

 

 

The transmitter power levels given above are Peak Power Levels after optical overshoot. Use a Peak Power Meter to compare the values given above to those measured on any particular port. To measure power levels with an Average Power Meter, add 3 dBm to the average power measurement to compare the average power values measured to the values listed above (i.e., -33.5dBm average + 3 dBm =-30.5dBm peak).

Page B-4

NBR-SERIESInstallation Guide

EPIM-C

B.5 EPIM-C

The EPIM-Csupports thin coaxial cabling and is equipped with an internal Cabletron SystemsTMS-3Transceiver. Use the TERM switch on the front of theEPIM-Cto set the internal 50 Ohm terminator. This eliminates the need to connect the port to aT-connectorand terminator.Figure B-1 shows the setting for the terminator switch.

.

Internal Termination Switch

= On (internally terminated)

= Off (need external termination)

1092_24

Figure B-4EPIM-Cwith BNC Port

Connector Type

BNC receptacle, with gold center contact, for use with BNC type T-connectorsand RG58 thin coaxial cable.

Grounding

Connecting a thin-netsegment to earth ground at more than one point could produce dangerous ground currents.

The BNC port of the Coaxial Interface Modules is not connected to earth ground.

NBR-SERIESInstallation Guide

Page B-5

Appendix B: EPIM Specifications

B.6 EPIM-AANDEPIM-X

The EPIM-Ais a DB15 female connector used to attach segments to an external transceiver. TheEPIM-Xis equipped with dual internal transceivers. It has a DB15 male connector used to attach segments to an AUI cable. FigureB-5shows both modules.

1092_25

Figure B-5EPIM-AandEPIM-X,AUI Port

 

Table B-1

DB15 Pinouts

Pin 1

Logic Ref.

9

Collision -

2

Collision +

10

Transmit -

3

Transmit +

11

Logic Ref.

4

Logic Ref.

12

Receive -

5

Receive +

13

Power (+12Vdc)

6

Power Return

14

Logic Ref.

7

No Connection

15

No Connection

8

Logic Ref.

 

 

Connector Shell: Protective Ground

Page B-6

NBR-SERIESInstallation Guide

APPENDIX C

NETWORK PLANNING AND CONFIGURATION

This appendix contains general networking guidelines. Before attempting to install the NBR or any additional EPIMs or BRIMs, review the requirements and specifications outlined in this appendix.

Your network installation must meet the conditions, guidelines,

!specifications, and requirements included in this appendix to

CAUT ION

ensure satisfactory performance of this equipment. Failure to

 

 

follow these guidelines may produce poor network

 

performance.

C.1 NETWORK CABLE REQUIREMENTS

Take care in planning and preparing the cabling and connections for your network. The quality of the connections, the length of cables, and other conditions of the installation play critical roles in determining the reliability of your network.

Refer to the sections below that apply to your specific network configuration.

C.1.1 10BASE-TTwisted Pair Network

When connecting a 10BASE-TTwisted Pair Segment to anEPIM-T,ensure the network meets the following requirements:

Length - The IEEE 802.310BASE-Tstandard requires that10BASE-Tdevices transmit over a 100 meter (328 foot) link using22-24AWG unshielded twisted pair wire. However, cable quality largely determines maximum link length. If you use high quality, low attenuation cable, you can achieve link lengths of up to 200 meters. Cable delay limits maximum link length to 200 meters, regardless of the cable type.

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Page C-1

Appendix C: Network Planning and Configuration

NOTE

Losses introduced by connections at punch-downblocks and

other equipment reduce total segment length. For each

 

connector or patch panel in the link, subtract 12 meters from

 

the total length of your cable.

Insertion Loss - Between frequencies of 5.0 and 10.0 MHz, the maximum insertion loss must not exceed 11.5 dB. This includes the attenuation of the cables, connectors, patch panels, and reflection losses due to impedance mismatches in the link segment.

Impedance - Cabletron Systems10BASE-TTwisted Pair products work on twisted pair cable with 75 to 165 ohms impedance. Unshielded twisted pair cables typically have an impedance of between 85 to 110 ohms. You can also use shielded twisted pair cables, such as IBM Type 1 cable, but keep in mind that this cable has an impedance of 150 ohms. The high impedance of the IBM Type 1 cable increases signal reflection. However, due to cable shielding, and its subsequent lack of crosstalk between shielded pairs, this signal reflection has little effect on the quality of the received signal.

Jitter - Intersymbol interference and reflections can cause jitter in the bit cell timing, resulting in data errors.10BASE-Tlinks must not generate more than 5.0 ns of jitter. Make sure your cable meets10BASE-Tlink impedance requirements to rule out jitter as a concern.

Delay - The maximum propagation delay of a10BASE-Tlink segment must not exceed 1000 ns. This 1000 ns maximum delay limits the maximum link segment length to no greater than 200 meters.

Crosstalk - Signal coupling between different cable pairs within amulti-paircable bundle causes crosstalk.10BASE-Ttransceiver design alleviates concerns about crosstalk, providing the cable meets all other requirements.

Noise - Crosstalk, or externally induced impulses, can cause noise. Impulse noise may cause data errors if the impulses occur at very specific times during data transmission. Generally, noise is not a concern. If you suspectnoise-relateddata errors, you may need to reroute the cable or eliminate the source of the impulse noise.

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NBR-SERIESInstallation Guide

Network Cable Requirements

Temperature -Multi-pairPVC 24 AWG telephone cables typically have an attenuation of approximately8-10dB/100 m at 20°C (68°F).

The attenuation of PVC insulated cable varies significantly with temperature. At temperatures greater than 40°C (104°F), we strongly recommend using plenum-ratedcable to ensure attenuation remains within specification.

C.1.2 Multimode Fiber Optic Network

When connecting a multimode fiber optic link segment to an EPIM-F1orEPIM-F2,ensure the network meets the following requirements:

Cable Type - Use theEPIM-F1andEPIM-F2for the following multimode fiber optic media:

-50/125 m fiber optic cabling

-62.5/125 m fiber optic cabling

-100/140 m fiber optic cabling

Attenuation - You must test the fiber optic cable with a fiber optic attenuation test set adjusted for an 850 nm wavelength. This test verifies the signal loss if a cable falls within the following acceptable levels:

-13.0 dB or less for a 50/125 m fiber cable segment

-16.0 dB or less for a 62.5/125 m fiber cable segment

-19.0 dB or less for a 100/140 m fiber cable segment

Budget and Propagation Delay - When you determine the maximum fiber optic cable length to incorporate fiber runs into your network, you must calculate and consider the fiber optic budget (a total loss of 10.0 dB or less is permissible between stations) and total network propagation delay.

-To determine the fiber optic budget, combine the optical loss due to the fiber optic cable, in-linesplices, and fiber optic connectors. Typical loss for a splice and connector (together) equals 1 dB or less.

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Appendix C: Network Planning and Configuration

-Network propagation delay is the amount of time it takes a packet to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network must not exceed

25.6s in one direction (51.2 s round trip). If the total propagation delay between any two nodes on the network exceeds

25.6s, you must use bridges.

Length - The maximum possible multimode fiber optic cable length is 2km (2187.2 yards). However, IEEE 802.3 FOIRL specifications specify a maximum of 1 km (1093.6 yards).

C.1.3 Single Mode Fiber Optic Network

When connecting a single mode fiber optic link segment to an EPIM-F3,ensure the network meets the following requirements:

Cable Type - Fiber optic link segments should consist of

8/125 to 12/125 m single mode fiber optic cabling. You can also use 62.5/125 m multimode cable with the EPIM-F3;however, multimode cable allows for greater optical loss, and limits the possible distance to 2 km.

Attenuation - You must test the fiber optic cable with a fiber optic attenuation test set adjusted for a 1300 nm wavelength. This test verifies that the signal loss in a cable falls within the acceptable level of 10.0 dB or less for any given single mode fiber optic link.

Budget and Propagation Delay - When you determine the maximum fiber optic cable length to incorporate fiber runs into your network, you must calculate and consider the fiber optic budget (a total loss of 10.0 dB or less is permissible between stations) and total network propagation delay.

-To determine the fiber optic budget, combine the optical loss due to the fiber optic cable, in-linesplices, and fiber optic connectors. Typical loss for a splice and connector (together) equals 1 dB or less.

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NBR-SERIESInstallation Guide

Network Cable Requirements

-Network propagation delay is the amount of time it takes a packet

to travel from the sending device to the receiving device. Total propagation delay for the entire network must not exceed 25.6 s in one direction (51.2 s round trip). If the total propagation delay exceeds 25.6 s, you must use bridges.

Length - If you meet all system budgets, the maximum single mode fiber optic cable length can reach 5 km (3.1 miles) with bridges at each segment end. However, IEEE 802.3 FOIRL specifications specify a maximum of 1 km (1093.6 yards).

C.1.4 Thin-NetNetwork

When connecting a thin-net(coaxial) segment to anEPIM-C,ensure your network meets the following requirements:

Cable Type - Use only 50 ohm RG58A/U type coaxial cable forthin-netcable segments.

Length - Thethin-netsegment must not exceed 185 meters.

Terminators - Terminate each end of athin-netsegment.

Connectors - You can use up to 29tee-connectorsthroughout the length of the cable segment for host connections.

-If you use an excessive number of barrel connectors within the cable segment (e.g., finished wall plates with BNC feed-throughs),you may need to reduce the number of host connections. For special network design, contact Cabletron Systems Technical Support.

Connecting a thin-netsegment to earth ground at more than one point could produce dangerous ground currents.

-Grounding - For safety, ground onlyone end of athin-netsegment. Do NOT connect EPIM BNC ports to earth ground.

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Appendix C: Network Planning and Configuration

C.2 TRANSCEIVER REQUIREMENTS

When you connect an external network segment to an EPIM-Ain your hub through a transceiver, that transceiver must meet IEEE 802.3 standards or Ethernet version 1.0 or 2.0 requirements. The transceiver must also have SQE disabled.

C.3 THE NBR AS A MULTIPORT ROUTER

An NBR routing image allows you to set up the module as a multi-portrouter. For information on how to upgrade the NBR to perform routing functions, and how to configure the NBR as amulti-portrouter, refer to Cabletron SystemsRouting Services Configuration Guide.

C.4 THE NBR-420/NBR-620AND BRIMS

The example in Figure C-1illustrates just one possibleNBR-620BRIM configuration. The NBR620/BRIM combination provides various connection possibilities, depending on the BRIM(s) you use. Refer to individual BRIM manuals and/or Cabletron SystemsRouting Services Configuration Guide to better understand the capabilities of each device.

T1 Connection

FDDI Backbone

NBR-620 MULTI PORT BRIDGE ROUTER

WITH

LANVIEW®

T1/FT1

SYNC

 

 

 

 

 

BRIM-WT1

PORT E

 

 

 

 

PORT F

 

 

RECEIVE

 

 

 

 

TRANSMIT

 

 

 

PWR

COLLISION

 

 

 

CPU

STAND BY

 

 

COM 2

COM 1

D C B A EPIM

PORT D

PORT C

PORT B

BRIM-A100

PORT A

Port D

Port C

Port B

Port A

 

 

 

 

Ethernet

Backbone

1092_05

Figure C-1TheNBR-620and BRIMs

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NBR-SERIESInstallation Guide

APPENDIX D

ADDITIONAL INFORMATION

D.1 NBR OVERVIEW

The NBR provides bridging and management for up to four separate Ethernet channels (A, B, C, and D). The following list contains the currently available EPIMs:

EPIM-T 10BASE-TTwisted Pair Segment Interface Module

EPIM-F1/EPIM-F2 – Multimode Fiber Optic Segment Interface Modules

EPIM-F3 – Single Mode Fiber Optic Segment Interface Module

EPIM-C Thin-netCoaxial Interface Module

EPIM-A/EPIM-X – AUI Cable Segment Interface Modules

In addition to Ethernet channels A through D, the NBR provides management for two optional Bridge/Router Interface Modules (BRIMs). These modules allow for additional Ethernet connections, Wide Area (Full or Fractional T1; 56 k DDS) access, or links to existing high-speedAsynchronous Transfer Mode (ATM) or Fiber Distributed Data Interface (FDDI) network backbones.

NOTE

Refer to the Customer Release Notes to see which BRIMs are

supported.

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Page D-1

Appendix D: Additional Information

Since the NBR is SNMP compliant, you can control and monitor the device remotely and locally using different SNMP Network Management packages. NBR firmware also supports DLM and all RMON groups, including:

Alarms

Hosts Top N

Events

Matrix

History

Statistics

Hosts

Filter

Packet capture

D.2 ETHERNET CHANNELS A, B, C, AND D

The NBR manages all Ethernet bridging traffic within its resident hub. This means that the NBR-620controls up to four of the Ethernet bridgingchannels—A,B, C, and D and theNBR-220andNBR-420control up to twochannels—Aand B. These channels access the same NBR shared memory, so bridging between channels is concurrent.

D.3 CHANNELS E AND F

The NBR-420andNBR-620support two optional Bridge/Router Interface Modules (BRIMs). These modules provide additional connectivity and either bridging or routing functions for your NBR. At the same time, BRIMs provide access to various transmission methods (e.g., ATM, FDDI, Wide Area, etc.).

NOTE

Refer to the Customer Release Notes to see which BRIMs are

supported.

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NBR-SERIESInstallation Guide

Bridging Functionality

D.4 BRIDGING FUNCTIONALITY

The NBR automatically configures itself as a bridge between channels A, B, C, D, E, and F for a six port bridge maximum. The IEEE 802.1d compliant bridge function supports multi-portbridging, the IETF Bridge MIB, Special Filtering Database, and Spanning Tree protocol.

The NBR incorporates IEEE 802.1d or DEC Spanning Tree Algorithms (user selectable), allowing bridges in parallel between segments as backup paths for fault tolerance. These parallel bridges remain in a standby condition until the primary path fails.

When the NBR receives frames (traffic) from any of the Ethernet channels, it places the frame in its buffer memory, and then goes through an information gathering/decision making process of what to do with those frames. The device determines the following:

Where the frames came from (source address), and if it has seen frames from that address before (learning)

Where the frames are going (destination address), and if it has received frames from that address before (filtering database lookup)

Whether to forward (send on) or filter (discard) any of these frames (database lookup result)

What channel to use if it must forward the frames

When the NBR forwards a frame, it extracts the frame buffer data (including the source and destination address), then transmits the frame onto the appropriate channel.

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Page D-3

INDEX

C

Certification A-3

COM port pinouts A-2

E

Environmental requirements A-3

H

Help 1-7

L

LANVIEW LEDs 1-3, 2-2

LCD 1-3, 2-2, 4-6

N

NBR

connecting to the network 3-17

features 1-3

 

 

installation

3-1

 

 

overview

D-1

 

 

Network

 

 

 

cable requirements

C-1

 

connection

3-17

 

 

operating specifications

A-1

transceiver requirements

C-6

NVRAM reset switch

3-6

 

P

Power supply requirements A-3

R

Related material

1-6

RESET button

1-3, 2-2, 4-12

T

Technical Support 1-7

NBR-SERIESInstallation Guide

Index-1

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.