Cabletron Systems CRBRIM-W/T Installation manual

CRBRIM-W/T
HARDWARE USER’S GUIDE
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005

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Hardware Installation Guide i
Hardware User’s Guide
NOTICE
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FORANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR
THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH
DAMAGES.
© Copyright April 1995 by: Cabletron Systems, Inc. P.O. Box 5005 Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Part Number: 9031380April 1995
SPECTRUM and LANVIEW are registered trademarks and CRBRIM-W/T ,
MMAC-8FNB , MMAC-5FNB , MMAC-3FNB , and MicroMMAC are trademarks of Cabletron
Systems, Inc.
Cisco Systems is a registered trademark of Cisco Systems, Inc.
Ethernet is a registered trademark of Xerox Corp.
VT-220 and VT-320 are trademarks of Digital Equipment Corp.
CompuServe is a registered trademark of CompuServe, Inc.
This electric hazard symbol appears in the CRBRIM-W/T Hardware User’s Guide.
Read all instructions that appear with this symbol. Failure to follow the instructions
appearing with this symbol could result in the presence of an electric hazard which
has the potential to cause injury.
Printed on recycled paper.

ii CRBRIM-W/T
NOTICE
FCC NOTICE
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply with the limits for a ClassA
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment uses, generates, and can radiate radio frequency
energy and if not installed in accordance with the operator’s manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference in which case the user will be required to correct the
interference at his own expense.
WARNING: Changes or modifications made to this device which are not expressly
approved by the party responsible for compliance could void the user’s authority to operate
the equipment.
DOC NOTICE
This digital apparatus does not exceed the ClassA limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la class A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.
VCCI NOTICE
This equipment is in the 1st Class Category (information equipment to be used in
commercial and/or industrial areas) and conforms to the standards set by the Voluntary
Control Council for Interference by Information Technology Equipment (VCCI) aimed at
preventing radio interference in commercial and/or industrial areas.
Consequently, when used in a residential area or in an adjacent area thereto, radio
interference may be caused to radios and TV receivers, etc.
Read the instructions for correct handling

NOTICE
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Hardware Installation Guide iii
Hardware User’s Guide
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,YOUARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS
AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF
WARRANTY AND DISCLAIMER OF LIABILITY. IFYOU DO NOT AGREE TO THE
TERMS OF THISAGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT TO
THE PLACE OF PURCHASE FORA FULL REFUND.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE. You have the right to use only the one (1) copy of the Program provided
in this package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce or transmit any part of the Program except as permitted
by the 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.

iv CRBRIM-W/T
NOTICE
EXCLUSION OFWARRANTY
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 DISCLAIMSALL WARRANTIES, OTHER THAN THOSE
SUPPLIED TOYOU BY CABLETRON IN WRITING, EITHER EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH
RESPECT TO THE PROGRAM, THEACCOMPANYING WRITTEN MATERIALS,
AND ANY ACCOMPANYING HARDWARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FORANY DAMAGES
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF
BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE
DAMAGES, OR OTHER LOSS)ARISING OUT OF THE USE OR INABILITY TO USE
THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR
CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR
LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE ABOVE
LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TOYOU.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at private expense; (b) contains “restricted
computer software” submitted with restricted rights in accordance with Section 52227-19
(a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its
successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its
suppliers.
For Department of Defense units, the product is licensed with “Restricted Rights” as
defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-
7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data
and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35 Industrial
Way, Rochester, New Hampshire 03867.

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Contents
Chapter 1 Introduction
1.1 Using This Manual ..........................................................................1-2
1.2 Document Objectives......................................................................1-2
1.3 Document Organization ..................................................................1-2
1.4 Document Conventions...................................................................1-3
1.5 Related Manuals.............................................................................1-5
1.6 Getting Help....................................................................................1-5
Chapter 2 Product Overview
2.1 System Specifications.....................................................................2-2
2.2 Memory Configurations...................................................................2-3
2.3 Protocol Support .............................................................................2-4
Chapter 3 Preparing for Installation
3.1 Preventing Electrostatic Discharge Damage ..................................3-1
3.2 System Operation Prerequisites .....................................................3-2
3.3 Distance Limitations........................................................................3-2
3.3.1 Serial Connections ..........................................................3-2
3.4 Interference Considerations............................................................3-4
3.5 Console Considerations..................................................................3-5
3.5.1 Console Port Connections...............................................3-5
3.6 Network Connection Considerations...............................................3-5
3.6.1 Token Ring Connections.................................................3-5
3.6.2 Serial Connections ..........................................................3-6
3.7 Inspecting the System.....................................................................3-6

vi CRBRIM-W/T
CONTENTS
Chapter 4 Installation
4.1 Tools and Parts Required...............................................................4-1
4.2 Installing the CRBRIM-W/T.............................................................4-2
4.2.1 Installing a CRBRIM-W/T into a MIM ..............................4-2
4.3 Making External Connections.........................................................4-7
Chapter 5 Troubleshooting the Hardware
Configuration
5.1 Problem Solving..............................................................................5-1
5.1.1 Troubleshooting the Network Interfaces and Cables ......5-2
5.1.2 Reading LED Indicators ..................................................5-2
Chapter 6 Maintenance
6.1 Installing Primary-Memory DRAM SIMMs ......................................6-1
6.1.1 Tools and Equipment Required.......................................6-2
6.1.2 Primary Memory Configurations......................................6-2
6.1.3 Approved DRAM SIMMs .................................................6-3
6.1.4 DRAM SIMM Installation .................................................6-3
6.2 Replacing System-Code SIMMs.....................................................6-5
6.2.1 Tools and Equipment Required.......................................6-5
6.2.2 System-Code SIMM Replacement..................................6-5
6.3 Recovering a Lost Password..........................................................6-7
Appendix A Cabling Specifications
A.1 Console Port Signals and Pinouts ..................................................A-2
A.2 Serial Cable Assemblies and Pinouts.............................................A-3
A.2.1 EIA-530 ...........................................................................A-3
A.2.2 RS-232............................................................................A-5
A.2.3 RS-449............................................................................A-8
A.2.4 V.35...............................................................................A-11
A.2.5 X.21...............................................................................A-14

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Appendix B Virtual Configuration Register
B.1 Virtual Configuration Register Settings...........................................B-1
B.1.1 Changing Configuration Register Settings ......................B-3
B.1.2 Virtual Configuration Register Bit Meanings....................B-5
B.1.3 Enabling Booting from Flash ...........................................B-8
B.1.4 Copying to Flash..............................................................B-8
Appendix C Bootstrap Program
C.1 Entering the Bootstrap Program .....................................................C-1
C.1.1 Available Bootstrap Commands......................................C-2
C.1.2 Running the Diagnostics..................................................C-5

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Chapter 1
Introduction
Welcome to the Cabletron Systems CRBRIM-W/T User’s Guide. This manual
describes features, explains installation procedures, and provides specifications for
the Cabletron Systems CRBRIM-W/T. The CRBRIM-W/T is designed to reside
in, and provide additional connectivity/functionality to various Cabletron Systems
MIMs and hubs such as the MicroMMAC.
Figure 1-1. CRBRIM-W/T
TP
RESET
S1 S0 CONSOLE
S0
TRPWR SYS S1

1-2 CRBRIM-W/T
CHAPTER 1: Introduction
1.1 UsingThis Manual
Read through this manual completely to familiarize yourself with its content and
to gain an understanding of the features and capabilities of the CRBRIM-W/T. A
general working knowledge of data communications networks and their physical
layer components is helpful when using the CRBRIM-W/T.
1.2 Document Objectives
This publication steps you through initial site preparation, installation, and
troubleshooting. It also covers selected maintenance procedures.
1.3 Document Organization
The major sections of this publication follow:
• Chapter 1, Introduction, outlines the contents, and describes the objectives
and conventions of the CRBRIM-W/T Hardware User’s Guide . This chapter
also provides a list of related manuals and GETTING HELP information.
• Chapter 2, Product Overview, contains an overview of the router feature set
and physical specifications.
• Chapter 3, Preparing for Installation, includes safety recommendations, site
requirements, an installation checklist, console port cable connection
considerations, network connection considerations, and instructions for
inspecting the new system.
• Chapter 4, Installation, provides a list of tools and parts required, procedures
for making external connections, and information about what to do after
installing the hardware.
• Chapter 5, Troubleshooting the Hardware Configuration, briefly discusses
troubleshooting, problem solving, and reading LED indicators.
• Chapter 6, Maintenance, includes procedures for upgrading system code
SIMMs, replacing DRAM SIMMs, and recovering from a lost password.

Document Conventions
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• Appendix A, Cabling Specifications, provides cable illustrations and pinouts
for the console port and serial cables.
• Appendix B, Virtual Configuration Register, discusses the settings for and
functions of the virtual configuration register.
• Appendix C, Bootstrap Program, contains procedures for testing system
memory and the central processor unit (CPU) by using the bootstrap
diagnostic tests and command options.
1.4 Document Conventions
This publication uses the following conventions to convey instructions and
information:
Command descriptions use these conventions:
• Commands and keywords are in boldface font.
• Variables for which you supply values are in italic font.
• Elements in square brackets ([ ]) are optional.
• Alternative but required keywords are grouped in braces ({ }) and are
separated by a vertical bar ( | ).
Examples use these conventions:
• Terminal sessions are in
screen
font.
• Information you enter is in
boldface screen
font.
• Nonprinting characters are shown in angle brackets (< >).
• Information the system displays is in screen font, with default responses in
square brackets ([ ]).

1-4 CRBRIM-W/T
CHAPTER 1: Introduction
Means reader take note. Notes contain helpful suggestions or
references to materials not contained in this manual.
NOTE
TIP
Means the described action saves time. You can save time by
performing the action described in the paragraph.
Means reader be careful. You are capable of doing something that
might result in equipment damage or loss of data.
!
CAUTION
Means electric hazard. You are in a situation that could cause
bodily injury. Before you work on any equipment, be aware of the
hazards involved with electrical circuitry and standard practices
for preventing accidents.

Related Manuals
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1-5
Hardware User’s Guide
1.5 Related Manuals
Use the following manuals to supplement the procedures and data provided in this
manual. This manual references procedures in these manuals, when appropriate,
but does not repeat them.
Cabletron Systems’ MicroMMAC User’s Guide
CRM-DOC
A compilation of Cisco Systems Router Products Configuration and Reference
Guides available through Cabletron Systems.
CRM-CDROM
A compilation of Cisco Systems Router Products Configuration and Reference
Guides on CD-ROM available through Cabletron Systems.
1.6 Getting Help
If you need additional support related to the Cabletron Systems CRBRIM-W/T, or
if you have any questions or comments related to this manual, contact Cabletron
Systems Technical Support by:
Mail: Cabletron Systems, Inc.,
P.O. Box 5005
Rochester, NH 03866-5005
Phone: [phone], Mon-Fri 8AM to 8PM Eastern Time
CompuServe: GO CTRON from any ! prompt
Internet Mail: [email protected]

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Chapter 2
Product Overview
Bridge/Router Interface Modules (BRIMs) reside in, and provide additional
connectivity/functionality to, various Cabletron MIMs and hubs (e.g. the
MicroMMAC). Cabletron’s CRBRIM-W/T remote access router provides multi-
protocol router capability for Cabletron MMAC (Multi-Media Access Center)
modules and standalone hubs with BRIM slots.
The CRBRIM-W/T utilizes a fixed configuration of two WAN ports, and one
internal Token Ring port. The two high density WAN ports support V.35, X.21,
RS449, RS422, RS530, and RS232 interfaces. The CRBRIM-W/T uses Cisco
Systems routing software and is capable of supporting Frame Relay, X.25, DDN
X.25, SMDS, T1/E1, and DDS circuit connections.
The CRBRIM-W/T uses a FLASH EEPROM and is shipped with system code
operating from Flash memory by default. (For more information on system-code
operation, see Chapter 3, section 3.2 “System Operation Prerequisites.”)
Figure 2-1 shows a front view of the CRBRIM-W/T.
Figure 2-1. CRBRIM-W/T
This chapter includes the following sections:
• System Specifications
• Memory Configurations
• Protocol Support
TRPWR SYS
RESET
S1 S0 CONSOLE
S1 S0

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CHAPTER 2: Product Overview
2.1 System Specifications
System specifications of the CRBRIM-W/T are listed in Table 2-1.
1. NRZ = Nonreturn to zero. NRZI = Nonreturn to zero inverted.
2. DTE = Data terminal equipment. DCE = Data communications equipment.
Table 2-1. System Specifications
Description Design Specification
Dimensions H x W x D 3x12.5x15.5cm
Current
Power dissipation 3.0 to 3.5 amps (A) 40W (max.), 135.5 British thermal units (Btu)/hr
Processor 20-MHz Motorola 68EC030
Network interface 1 Token Ring and 2 synchronous serial (2501)
Token Ring interface
(internal) IEEE 802.5 (CRBRIM to RJ45)
Synchronous serial
interfaces RS-232, RS-449, V.35, X.21 (NRZ/NRZI
1
and
DTE/DCE
2
mode)
EIA-530 (NRZ/NRZI and DTE mode)
All serial interfaces use the DB-60 connector at
the chassis.
Console port Asynchronous serial (RJ45)
Operating environment 32 through 104 ° F (0 through 40 ° C)
Nonoperating temperature –40 through 185 ° F (–40 through 85 ° C)
Operating humidity 5 through 95%, noncondensing
This publication takes you through the initial hardware installation
and selected maintenance procedures. Refer to your specific MIM
or Management Module Installation Guides and Local
Management Guides for software configuration and operating
information.
NOTE

Memory Configurations
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2.2 Memory Configurations
The CRBRIM-W/T has the following memory systems:
• Primary memory (main memory)—Dynamic random-access memory
(DRAM) that stores the running configuration and routing tables; mounted on
the system card.
• Shared memory—Shared DRAM that is used for packet buffering by the
router network interfaces.
• System-code memory—Flash or programmable read-only memory (PROM);
stores the operating system software image.
• Boot ROM memory—Stores a subset of the operating system software image
that is called the system bootstrap image or the bootstrap program (or ROM
monitor). The system bootstrap image allows you to boot the router when
Flash memory does not contain a valid system image.
The boot ROM prompt follows: Router(boot)>. The bootstrap program (ROM
monitor) prompt is the greater than sign (>), which differs from the user-level
operating-system prompt of gateway >. (For more information, seeAppendix
B, “Virtual Configuration Register,” and Appendix C, “Bootstrap Program.”
• Nonvolatile random-access memory (NVRAM)—Stores the system
configuration file and the virtual configuration register.

2-4 CRBRIM-W/T
CHAPTER 2: Product Overview
Table 2-2 shows possible memory configurations for the CRBRIM-W/T.
2.3 Protocol Support
The CRBRIM-W/T is hardware encoded at the factory to operate with one of three
router software sets. This provides users with the option of selecting IP,
DESKTOP, or ENTERPRISE routing software at the time of purchase.
1. The router has 2 MB of permanent (fixed) DRAM memory and a DRAM SIMM
socket for upgrading the memory. 1 MB of this permanent memory is used by the
CPU and is called
primary memory. The other 1 MB of memory is used by the net-
work interface ports to store packets and is called
shared or packet memory. When
a DRAM SIMM is installed in the DRAM SIMM socket, all of the DRAM memory on
this SIMM becomes primary memory for the CPU, and the 2 MB of DRAM that is
permanent on the board becomes shared memory.
2. The ENTERPRISE router ships with 8 MB of System-code memory.
Table 2-2. Memory Configurations
Memory Type Memory Capacity
Primary memory (DRAM SIMMs) 1 MB (expandable to 4 or 16 MB)
Shared (packet) memory 1 MB (DRAM on board)1
System-code memory (Flash or
PROMs) 4 MB (expandable)2
Boot ROM 1 MB
Nonvolatile RAM (NVRAM) 32 KB
The CRBRIM-W/T is factory configured for either IP, DESKTOP
or ENTERPRISE Routing Software. The factory hardware settings
are permanent and cannot be changed to operate a different router
software set.
NOTE

Protocol Support
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The ENTERPRISE router software set provides all Cisco-supported LAN, WAN,
and routing protocols as well as IBM features and protocol translator functionality.
Supported LAN protocols include IP, Novell, IPX, DECnet IV,AppleTalk Phase 1
and 2, bridging, DECnet V, XNS, BanyonVINES, OSI,Apollo Domain, PUP, and
CHAOSnet.
The DESKTOP software set supports IP, Novell, IPX, DECnet IV, AppleTalk
Phase 1 and 2, and bridging.
The IP software set supports IP, and bridging protocols.
All CRBRIM-W/T models are shipped with Frame Relay and X.25 software that
offers efficient remote site access to packet switched networks.
CRBRIM-W/T models configured for either DESKTOP or
ENTERPRISE Routing Software are shipped with a user
installable 4 megabyte primary memory DRAM SIMM. See
Chapter 6, section 6.1.4 DRAM SIMM Installation for installation
procedures.
NOTE

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Chapter 3
Preparing for Installation
This chapter describes the tasks you must perform before starting actual system
installation.
Sections of this chapter follow:
• Preventing Electrostatic Discharge Damage
• System Operation Prerequisites
• Distance Limitations
• Interference Considerations
• Console Considerations
• Network Connection Considerations
• Inspecting the System
3.1 Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damages equipment and impairs electrical circuitry.
It occurs when electronic components are improperly handled and causes
complete or intermittent failures.
Follow ESD-prevention procedures when handling electronic components. Ensure
that the chassis is electrically connected to earth ground. Wear an ESD wrist strap,
ensuring that it makes good skin contact. Connect the clip to an unpainted chassis
frame surface to safely channel unwanted ESD voltages to ground. To properly
guard against ESD damage and shocks, the wrist strap and cord must operate
effectively.

3-2 CRBRIM-W/T
CHAPTER 3: Preparing for Installation
3.2 System Operation Prerequisites
The CRBRIM-W/T is designed to run system code from Flash memory single in-
line memory modules (SIMMs). With the proper system code image, the router
also can be run from dynamic random-access memory (DRAM); however, this
operation requires a 4-MB memory upgrade (installation of a 4 MB x 72 pin
DRAM SIMM). Further, operating system code from DRAM can result in a 25-
percent decrease in system performance.
Operating the system code from Flash is the default and is recommended for
optimum performance of the router.
3.3 Distance Limitations
When setting up your router, consider distance limitations and potential
electromagnetic interference (EMI) as defined by the Electronic Industries
Association (EIA). Following are the distance limitation specifications for serial
interfaces.
3.3.1 Serial Connections
As with all signaling systems, RS-232 signals travel a limited distance at any
given bit rate; generally, the slower the data rate, the greater the distance.
Table 3-1 shows the standard relationship between baud rate and maximum
distance.
For safety, periodically check the resistance value of the antistatic
strap, which should be within the range of 1 and 10 M Ω .
!
CAUTION