Cisco Systems 3700 Series Network Router User Manual

Cisco 3700 Series Routers
Hardware Installation Guide
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800 553-NETS (6387)
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Text Part Number: OL-2180-08
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE
OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The following information is for FCC compliance of Class A devices: 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 generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required
to correct the interference at their own expense.
The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not
installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to
comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable
protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.
Modifying the equipment without Cisco’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital
devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television
communications at your own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its
peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
• Turn the television or radio antenna until the interference stops.
• Move the equipment to one side or the other of the television or radio.
• Move the equipment farther away from the television or radio.
• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits
controlled by different circuit breakers or fuses.)
Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public
domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.
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LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF
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WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
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All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0411R)
Book Title
Copyright © 2000-2003 Cisco Systems, Inc.
All rights reserved.
C O N T E N T S
Preface
vii
Objectives
vii
Audience
viii
Organization
viii
Conventions
viii
Safety Warnings
ix
Related Documentation
xiv
Obtaining Documentation xvi
Cisco.com xvi
Ordering Documentation xvi
Documentation Feedback
xvi
Obtaining Technical Assistance xvii
Cisco Technical Support Website xvii
Submitting a Service Request xvii
Definitions of Service Request Severity xviii
Obtaining Additional Publications and Information
CHAPTER
1
Overview of Cisco 3700 Series Routers
xviii
1-1
Hardware Features 1-1
Cisco 3725 1-1
Cisco 3745 1-2
Modules, Interface Cards, and Memory
Memory
1-3
1-4
Interface Numbering 1-5
Cisco 3725 Interfaces 1-5
Cisco 3745 Interfaces 1-7
Power Supply Options 1-9
Internal –48 V Telephony Power Modules
System Specifications
1-11
Regulatory Compliance
CHAPTER
2
1-9
1-12
Preparing to Install the Router
Safety Recommendations
2-1
2-1
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Contents
Safety with Electricity 2-2
Preventing Electrostatic Discharge Damage
General Site Requirements 2-3
Power Supply Considerations
Site Environment 2-4
Site Configuration 2-4
Equipment Racks 2-4
Installation Checklist
2-2
2-3
2-5
Creating a Site Log
2-6
Inspecting the Router
2-6
Required Tools and Equipment for Installation and Maintenance
Console and Auxiliary Port Considerations
Console Port Connections 2-8
Auxiliary Port Connections 2-8
2-8
Preparing to Connect to a Network 2-9
Ethernet Connections 2-9
Token Ring Connections 2-10
Serial Connections 2-10
ISDN BRI Connections 2-12
56-K/Switched-56-kbps DSU/CSU Connections
CHAPTER
3
Installing the Router
2-7
2-13
3-1
Installing Modules, Interface Cards, and Power Supplies
Setting Up the Chassis 3-2
Setting the Chassis on a Desktop
Rack-Mounting the Chassis 3-3
3-1
3-2
Installing the Chassis Ground Connection 3-8
Cisco 3725 Router Ground Connection 3-9
Cisco 3745 Router Ground Connection 3-10
Power Connections 3-11
Connecting Routers to AC Power 3-12
Connecting Routers to a DC-Input Power Supply 3-12
Connecting Routers to the Cisco Redundant Power System
3-20
Connecting WAN, LAN, and Voice Cables 3-20
Ports and Cabling 3-20
Connection Procedures and Precautions 3-21
Connecting to a Console Terminal or Modem
Connecting to the Console Port 3-22
3-22
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Connecting to the Auxiliary Port 3-24
Identifying a Rollover Cable 3-25
Powering Up the Router 3-26
Checklist for Power Up 3-26
Front Panel Indicators 3-26
Power-Up Procedure 3-27
Configuring the Router 3-29
Initial Configuration Using SDM 3-29
Initial Configuration Using the Setup Command Facility 3-29
Initial Configuration Using the CLI (Manual Configuration) 3-32
APPENDIX
A
Troubleshooting
A-1
Solving Problems A-2
Troubleshooting the Power and Cooling Systems A-2
Environmental Reporting Features A-3
Troubleshooting Modules, Cables, and Connections A-3
Reading Front-Panel LEDs
A-4
Reading Rear Panel LEDs
A-6
Error Messages
A-8
Recovering a Lost Password
APPENDIX
B
Using the ROM Monitor
A-12
B-1
Entering ROM Monitor Mode B-1
Enter ROM Monitor Mode by Using the reload Command B-2
Enter ROM Monitor Mode by Resetting the Configuration Register
ROM Monitor Commands
B-2
B-2
ROM Monitor Syntax Conventions
B-3
ROM Monitor Command Descriptions B-3
Boot Commands in the ROM Monitor B-3
Informational Commands in the ROM Monitor B-5
Other Useful ROM Monitor Commands B-6
Debugging Commands in the ROM Monitor B-6
Configuration Register B-6
Recovering Cisco IOS Software Images B-8
Description and Options of the xmodem Command
APPENDIX
C
Configuration Register
B-8
C-1
Configuration Register Settings
C-1
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Changing Configuration Register Settings
Configuring the Boot Field
C-2
C-3
Enabling Booting from CompactFlash Memory
C-5
INDEX
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Preface
This preface discusses the objectives, audience, organization, and conventions of this hardware
installation guide, and points to related documents that have information beyond the scope of this
document. It contains the following sections:
•
Objectives, page vii
•
Audience, page viii
•
Organization, page viii
•
Conventions, page viii
•
Safety Warnings, page ix
•
Related Documentation, page xiv
•
Obtaining Documentation, page xvi
•
Documentation Feedback, page xvi
•
Obtaining Technical Assistance, page xvii
•
Obtaining Additional Publications and Information, page xviii
Objectives
This guide explains how to install, maintain, and troubleshoot your router hardware. It also includes
instructions for the router ROM monitor and configuration register.
Although this guide provides minimum software configuration information, it is not comprehensive. For
detailed software configuration information, see the Software Configuration Guide for Cisco 2600
Series, Cisco 3600 Series, and Cisco 3700 Series Routers and the Cisco IOS configuration guide and
command reference publications. These publications are available online on Cisco.com. See the
“Obtaining Documentation” section on page xvi for more information.
This guide describes several router models that are similar in functionality but differ in the number of
interfaces supported. Some information provided may not apply to your particular router model.
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Preface
Audience
Audience
This guide is designed for the person installing, configuring, and maintaining the router, who should be
familiar with electronic circuitry and wiring practices and has experience as an electronic or
electromechanical technician. It identifies certain procedures that should be performed only by trained
and qualified personnel.
Organization
Table 1 lists the major sections of this hardware installation guide.
Table 1
Document Organization
Chapter
Title
Description
Chapter 1
Overview of Cisco 3700 Series Routers
Describes the features and specifications of Cisco 3700 series
routers.
Chapter 2
Preparing to Install the Router
Describes safety recommendations, site requirements, and
required tools and equipment, and includes installation checklist.
Chapter 3
Installing the Router
Describes how to install the router, and shows how to connect to
the router console and auxiliary ports.
Appendix A
Troubleshooting
Describes how to isolate problems, read LEDs, and interpret error
and recovery messages.
Appendix B
Using the ROM Monitor
Describes the ROM monitor (bootstrap program), how to recover
an enable password, and how to recover software images.
Appendix C
Configuration Register
Describes the configuration register settings and procedures for
changing these settings.
Conventions
This guide uses the conventions listed in Table 2 to convey instructions and information.
Table 2
Document Conventions
Convention
Description
boldface font
Commands and keywords.
italic font
Variables for which you supply values.
[
Optional keywords or arguments appear in square brackets.
]
{x | y | z}
A choice of required keywords appears in braces separated by vertical bars. You must select one.
screen font
Examples of information displayed on the screen.
boldface screen
Examples of information you must enter.
font
<
>
Nonprinting characters, for example passwords, appear in angle brackets in contexts where italics are
not available.
[
]
Default responses to system prompts appear in square brackets.
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Safety Warnings
Note
Timesaver
Tip
Caution
Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Means the described action saves time. You can save time by performing the action described in the
paragraph.
Means the following information will help you solve a problem. The tips information might not be
troubleshooting or even an action, but could be useful information, similar to a Timesaver.
Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may
harm you. A warning symbol precedes each warning statement. To see translations of the warnings that
appear in this publication, see the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series
Regulatory Compliance and Safety Information document that accompanied your router.
Warning
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. 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 be familiar
with standard practices for preventing accidents. Use the statement number provided at the end of
each warning to locate its translation in the translated safety warnings that accompanied this
device. Statement 1071
SAVE THESE INSTRUCTIONS
Waarschuwing
BELANGRIJKE VEILIGHEIDSINSTRUCTIES
Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan
veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij
elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van de standaard
praktijken om ongelukken te voorkomen. Gebruik het nummer van de verklaring onderaan de
waarschuwing als u een vertaling van de waarschuwing die bij het apparaat wordt geleverd, wilt
raadplegen.
BEWAAR DEZE INSTRUCTIES
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Safety Warnings
Varoitus
TÄRKEITÄ TURVALLISUUSOHJEITA
Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia vammoja. Ennen kuin
käsittelet laitteistoa, huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu
onnettomuuksien yleisiin ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen
mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien
lausuntonumeroiden avulla.
SÄILYTÄ NÄMÄ OHJEET
Attention
IMPORTANTES INFORMATIONS DE SÉCURITÉ
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant
entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez
conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures
couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des
avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil,
référez-vous au numéro de l'instruction situé à la fin de chaque avertissement.
CONSERVEZ CES INFORMATIONS
Warnung
WICHTIGE SICHERHEITSHINWEISE
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen führen
kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen und
den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder
Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten
Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden.
BEWAHREN SIE DIESE HINWEISE GUT AUF.
Avvertenza
IMPORTANTI ISTRUZIONI SULLA SICUREZZA
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli
relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti.
Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le
traduzioni delle avvertenze riportate in questo documento.
CONSERVARE QUESTE ISTRUZIONI
Advarsel
VIKTIGE SIKKERHETSINSTRUKSJONER
Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade på person. Før du
begynner å arbeide med noe av utstyret, må du være oppmerksom på farene forbundet med
elektriske kretser, og kjenne til standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten
av hver advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som fulgte med denne
enheten.
TA VARE PÅ DISSE INSTRUKSJONENE
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Safety Warnings
Aviso
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. Você está em uma situação que poderá ser causadora de
lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha conhecimento dos
perigos envolvidos no manuseio de circuitos elétricos e familiarize-se com as práticas habituais de
prevenção de acidentes. Utilize o número da instrução fornecido ao final de cada aviso para
localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo.
GUARDE ESTAS INSTRUÇÕES
¡Advertencia!
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los
procedimientos estándar de prevención de accidentes. Al final de cada advertencia encontrará el
número que le ayudará a encontrar el texto traducido en el apartado de traducciones que acompaña
a este dispositivo.
GUARDE ESTAS INSTRUCCIONES
Varning!
VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och
känna till vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av
varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna
anordning.
SPARA DESSA ANVISNINGAR
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Safety Warnings
Aviso
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões
corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os
circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o
número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de
segurança traduzidos que acompanham o dispositivo.
GUARDE ESTAS INSTRUÇÕES
Advarsel
VIGTIGE SIKKERHEDSANVISNINGER
Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for
legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de
involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til
undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de
oversatte advarsler, der fulgte med denne enhed.
GEM DISSE ANVISNINGER
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Preface
Related Documentation
Related Documentation
The Cisco IOS software running your Cisco 3700 series router includes extensive features and
functionality. For information that is beyond the scope of this document, or for additional information,
use the following resources.
Timesaver
Make sure that you have access to the documents listed in Table 3. Some of these documents are
available in print, and all are on CD-ROM and on the World Wide Web. If you need to order printed
documents, see the “Obtaining Documentation” section on page xvi.
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Related Documentation
Table 3
Related and Referenced Documents
Cisco Product
Document Title
Cisco 3700 series router
Cisco 3725 Router Quick Start Guide
Cisco 3745 Router Quick Start Guide
Cisco Modular Access Router Cable Specifications
Cisco Redundant Power System Hardware Installation Guide
Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600
Series, and Cisco 3700 Series Routers
Cisco Network Modules Hardware Installation Guide
Quick Start Guide: Interface Cards for Cisco 1600, 1700, 2600, 3600,
and 3700 Series
Cisco Interface Cards Hardware Installation Guide
Upgrading System Memory in Cisco 3700 Series Routers
Installing Cisco –48 VDC Power Supplies
AIM Installation Quick Start Guide: Cisco 2600, 3600, and 3700 Series
Installing Advanced Integration Modules in Cisco 2600 Series,
Cisco 3600 Series, and Cisco 3700 Series Routers
Installing AC Power Supplies in Cisco 3725 Routers
Installing Field-Replaceable Units in Cisco 3745 Routers
Mounting Bracket Installation on Cisco 2691, Cisco 3631, and
Cisco 3725 Routers
Rack-Mounting Cisco 3745 Routers
Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700
CompactFlash Memory Cards
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series,
and Cisco 3700 Series Routers
Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory
Compliance and Safety Information
Network management
system
Network management software documentation
Cisco IOS software
Cisco IOS software documentation, all releases.
http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/index.htm
http://www.cisco.com/univercd/cc/td/doc/product/software/index.htm
See the documentation for the Cisco IOS software release installed on
your router.
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Preface
Obtaining Documentation
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several
ways to obtain technical assistance and other technical resources. These sections explain how to obtain
technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
•
Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from
the Ordering tool:
http://www.cisco.com/en/US/partner/ordering/index.shtml
•
Nonregistered Cisco.com users can order documentation through a local account representative by
calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in
North America, by calling 1 800 553-NETS (6387).
Documentation Feedback
You can send comments about technical documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
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Obtaining Technical Assistance
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco
Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical
Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical
Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service
contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and
resolving technical issues with Cisco products and technologies. The website is available 24 hours a day,
365 days a year, at this URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password.
If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Note
Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting
a web or phone request for service. You can access the CPI tool from the Cisco Technical Support
Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product
Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product
Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID
or model name; by tree view; or for certain products, by copying and pasting show command output.
Search results show an illustration of your product with the serial number label location highlighted.
Locate the serial number label on your product and record the information before placing a service call.
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3
and S4 service requests are those in which your network is minimally impaired or for which you require
product information.) After you describe your situation, the TAC Service Request Tool provides
recommended solutions. If your issue is not resolved using the recommended resources, your service
request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone.
(S1 or S2 service requests are those in which your production network is down or severely degraded.)
Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business
operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
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Preface
Obtaining Additional Publications and Information
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity
definitions.
Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You
and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your
business operation are negatively affected by inadequate performance of Cisco products. You and Cisco
will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations
remain functional. You and Cisco will commit resources during normal business hours to restore service
to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or
configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online
and printed sources.
•
Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit
Cisco Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
•
The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as
ordering and customer support services. Access the Cisco Product Catalog at this URL:
http://cisco.com/univercd/cc/td/doc/pcat/
•
Cisco Press publishes a wide range of general networking, training and certification titles. Both new
and experienced users will benefit from these publications. For current Cisco Press titles and other
information, go to Cisco Press at this URL:
http://www.ciscopress.com
•
Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and
networking investments. Each quarter, Packet delivers coverage of the latest industry trends,
technology breakthroughs, and Cisco products and solutions, as well as network deployment and
troubleshooting tips, configuration examples, customer case studies, certification and training
information, and links to scores of in-depth online resources. You can access Packet magazine at
this URL:
http://www.cisco.com/packet
•
iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies
learn how they can use technology to increase revenue, streamline their business, and expand
services. The publication identifies the challenges facing these companies and the technologies to
help solve them, using real-world case studies and business strategies to help readers make sound
technology investment decisions. You can access iQ Magazine at this URL:
http://www.cisco.com/go/iqmagazine
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Obtaining Additional Publications and Information
•
Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering
professionals involved in designing, developing, and operating public and private internets and
intranets. You can access the Internet Protocol Journal at this URL:
http://www.cisco.com/ipj
•
World-class networking training is available from Cisco. You can view current offerings at
this URL:
http://www.cisco.com/en/US/learning/index.html
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Preface
Obtaining Additional Publications and Information
Cisco 3700 Series Routers Hardware Installation Guide
xx
OL-2180-08
C H A P T E R
1
Overview of Cisco 3700 Series Routers
Cisco 3700 series routers are modular access routers with LAN and WAN connections that can be
configured by means of interchangeable network modules and interface cards.
This chapter describes the features and specifications of the routers and includes the following sections:
•
Hardware Features, page 1-1
•
Modules, Interface Cards, and Memory, page 1-3
•
Memory, page 1-4
•
Interface Numbering, page 1-5
•
Power Supply Options, page 1-9
•
System Specifications, page 1-11
•
Regulatory Compliance, page 1-12
Hardware Features
Cisco 3700 series includes the Cisco 3725 and the Cisco 3745 routers, which provide the following
features:
•
Cisco 3700 CompactFlash memory cards
•
Advanced integration module (AIM) slots
•
Support for double-wide network modules
•
Two sockets for synchronized DRAM (SDRAM)
•
User-configurable memory (shared memory or processor memory)
•
Two Fast Ethernet ports
•
High-speed console and auxiliary ports (up to 115.2 kbps)
Cisco 3725
Cisco 3725 routers include the following additional features:
•
High-performance 240-MHz Reduced Instruction Set Computer (RISC) processor
•
Up to 256 MB SDRAM
•
Up to 128 MB CompactFlash memory
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Chapter 1
Overview of Cisco 3700 Series Routers
Hardware Features
•
Two slots for network modules, one of which can accommodate a double-wide network module
•
Three interface card slots
•
Two Cisco 3700 CompactFlash slots (one external and one internal)
•
Two AIM slots
•
Installation in a 19- or 23-inch rack or on a desk
•
Support for Cisco Redundant Power System
•
2-rack unit (RU) chassis height
Figure 1-1 shows the rear panel of the Cisco 3725 router.
Figure 1-1
Rear Panel of the Cisco 3725 Router
2
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6
CompactFlash memory card slot
2
Interface card slots
7
Fast Ethernet 0/0 port
3
Power supply
8
Fast Ethernet 0/1 port
4
Auxiliary port
9
Single-wide network module slot
5
Console port
Cisco 3745
Cisco 3745 routers include the following additional features:
•
High-performance 350-MHz RISC processor
•
Up to 256 MB SDRAM
•
Up to 128 MB CompactFlash memory
•
Four slots for network modules that can accommodate up to two double-wide network modules
•
Three interface card slots
•
Two Cisco 3700 CompactFlash memory card slots (one external and one internal)
•
Two AIM slots
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Modules, Interface Cards, and Memory
•
Installation in a 19- or 23-inch rack or on a desk
•
Support for Cisco Redundant Power System
•
3-rack unit (RU) chassis height
Figure 1-2 shows the rear panel of the Cisco 3745 router.
Figure 1-2
Rear Panel of the Cisco 3745 Router
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7
6
5
4
2
3
1 Interface card slots
6
Cisco 3700 CompactFlash memory card slot
2 Network modules
7
Auxiliary port
3 Power supply
8
Console port
4 Fast Ethernet 0/0 port
9
Power supply
5 Fast Ethernet 0/1 port
10 Network modules
Modules, Interface Cards, and Memory
•
For information on installing network modules, see the following documents:
•
Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700
Series Routers
•
Cisco Network Modules Hardware Installation Guide
For information on installing WICs and VICs, see the following documents:
•
Quick Start Guide: Interface Cards for Cisco 1600, 1700, 2600, 3600, and 3700 Series
•
Cisco Interface Cards Hardware Installation Guide
For information on installing AIMs, see the following documents:
•
AIM Installation Quick Start Guide: Cisco 2600, Cisco 3600, and Cisco 3700 Series
•
Installing Advanced Integration Modules in Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700
Series Routers
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Chapter 1
Overview of Cisco 3700 Series Routers
Memory
For information on installing DRAM, SDRAM, NVRAM, and CompactFlash memory, see:
•
Upgrading System Memory in Cisco 3700 Series Routers
•
Installing Field-Replaceable Units in Cisco 3745 Routers
For information on installing CompactFlash memory cards, see:
•
Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700 CompactFlash Memory Cards
Memory
Cisco 3700 series routers support the following types of memory:
•
SDRAM—Stores the running configuration and routing tables and is used for packet buffering by
the network interfaces. Cisco IOS software executes from SDRAM memory.
•
NVRAM—Stores the system configuration file and virtual configuration register. For more
information, see Appendix C, “Configuration Register.” CompactFlash memory—Stores the
operating system software image. You can increase CompactFlash memory by adding Cisco 3700
CompactFlash memory cards. See the Installing and Formatting Cisco 3631 and Cisco 3700
CompactFlash Memory Cards document.
•
EPROM-based memory—Stores the ROM monitor, which allows you to boot an operating system
software image from internal or external CompactFlash memory.
Table 1-1 and Table 1-2 list processor and memory specifications for Cisco 3700 series routers.
Table 1-1
Cisco 3725 Router Processor and Memory Specifications
Description
Specification
Processor
240-MHz PMC-Sierra RM7061A RISC processor
SDRAM
128–256 MB
NVRAM
56 KB
CompactFlash
32, 64, or 128 MB
Boot ROM
512 KB
Table 1-2
Cisco 3745 Router Processor and Memory Specifications
Description
Specification
Processor
350-MHz PMC-Sierra RM7000A RISC processor
SDRAM
128–256 MB
NVRAM
152 KB
CompactFlash
32, 64, or 128 MB
Boot ROM
704 KB
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Overview of Cisco 3700 Series Routers
Interface Numbering
Interface Numbering
This section describes numbering conventions for interfaces on Cisco 3725 and Cisco 3745 routers.
Cisco 3725 Interfaces
Each individual interface (port) on a Cisco 3725 router is identified by number, as described in the
following sections.
WAN and LAN Interface Numbering
The Cisco 3725 router chassis contains the following WAN and LAN interface types:
•
Two built-in Fast Ethernet LAN interfaces
•
Three slots in which you can install WAN interface cards (WICs)
•
One single-wide slot (slot 1) in which you can install one network module
•
One double-wide slot (slot 2) in which you can install one single-wide or double-wide network
module
The numbering format is interface-type slot-number/interface-number. Two examples are:
•
FastEthernet 0/0
•
Serial 1/2
The slot numbers are as follows:
•
0 for all built-in interfaces
•
0 for all WIC interfaces
•
1 for interfaces in the single-wide network module slot
•
2 for interfaces in the double-wide network module slot
Interface (port) numbers begin at 0 for each interface type, and continue from right to left and (if
necessary) from bottom to top.
Figure 1-3 shows an example of interface numbering on a Cisco 3725 router with these interfaces:
•
A WIC in each WIC slot (containing interfaces Serial 0/0 and Serial 0/1 in physical slot W0,
interface Serial 0/2 in physical slot W1, and interface BRI 0/0 in physical slot W2)
•
A 2-port T1 network module in slot 1 (containing the following ports: T1 1/0 and T1 1/1)
•
A 36-port EtherSwitch network module in slot 2 (containing the following ports: Fast Ethernet 2/0
through 2/35, and Gigabit Ethernet 2/0 and 2/1)
•
Two built-in Ethernet 10/100-Mbps interfaces—Fast Ethernet 0/0 and Fast Ethernet 0/1
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Chapter 1
Overview of Cisco 3700 Series Routers
Interface Numbering
Figure 1-3
WAN and LAN Interface Numbering
Gigabit Ethernet 2/1
Fast Ethernet 2/35
Fast Ethernet 2/17
Fast Ethernet 2/18
Fast Ethernet 2/0
Gigabit Ethernet 2/0
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Fast Ethernet 0/1
Fast Ethernet 0/0
BRI 0/0
Compact Serial 0/2
Flash slot
Serial 0/1
Serial 0/0
The slot number for all WIC interfaces is always 0. (The W0 and W1 slot designations are for physical
slot identification only.) Interfaces in the WICs are numbered from right to left, starting with 0/0 for each
interface type, regardless of which physical slot the WICs are installed in. Some examples are as follows:
•
If slot W0 is empty and slot W1 contains a 1-port serial WIC, the serial interface in the WIC is
numbered Serial 0/0.
•
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port serial WIC, the serial interfaces
in physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the serial interface in physical slot
W1 is numbered Serial 0/2.
•
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port BRI WIC, the serial interfaces
in physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the BRI interface in physical slot
W1 is numbered BRI 0/0.
Voice Interface Numbering
Voice interfaces are numbered as follows:
chassis-slot/voice-module-slot/voice-interface
If a 4-channel voice network module is installed in chassis slot 1, the voice interfaces are:
•
1/0/0—Chassis slot 1/Voice module slot 0/Voice interface 0
•
1/0/1—Chassis slot 1/Voice module slot 0/Voice interface 1
•
1/1/0—Chassis slot 1/Voice module slot 1/Voice interface 0
•
1/1/1—Chassis slot 1/Voice module slot 1/Voice interface 1
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Overview of Cisco 3700 Series Routers
Interface Numbering
Cisco 3745 Interfaces
Each individual interface (port) on a Cisco 3745 router is identified by number as described in the
following sections.
WAN and LAN Interface Numbering
The Cisco 3745 router chassis contains the following WAN and LAN interface types:
•
Two built-in FastEthernet LAN interfaces
•
Three slots in which you can install WAN or voice interface cards
•
Four network module slots
The numbering format is interface-type slot-number/interface-number. Two examples are:
•
FastEthernet 0/0
•
Serial 1/2
The slot numbers are as follows:
•
0 for all built-in interfaces
•
0 for all WIC interfaces
•
1 for the lower-right network module slot
•
2 for the lower-left network module slot
•
3 for the upper-right network module slot
•
4 for the upper-left network module slot
If double-wide network modules are installed, the network module slots are numbered as follows:
•
2 for the lower double-wide slot
•
4 for the upper double-wide slot
Interface (port) numbers begin at 0 for each interface type, and continue from right to left and from
bottom to top.
Figure 1-4 shows the rear panel of the Cisco 3745 with:
•
A WIC in each of the three WAN interface card slots
•
A single-wide network module in each of the four network module slots
•
Two AC power supplies
The slot number for all WIC interfaces is always 0. (The W0, W1, and W2 slot designations are for
physical slot identification only.) Interfaces in the WICs are numbered from right to left, starting with
0/0 for each interface type, regardless of which physical slot the WICs are installed in. Some examples
are:
If physical slot W0 is empty and physical slot W1 contains a 1-port serial WIC, the serial interface in
the WIC is numbered Serial 0/0.
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port serial WIC, the serial interfaces in
physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the serial interface in physical slot W1 is
numbered Serial 0/2.
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port BRI WIC, the serial interfaces in
physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the BRI interface in physical slot W1 is
numbered BRI 0/0.
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Overview of Cisco 3700 Series Routers
Interface Numbering
Figure 1-4
Cisco 3745 Rear Panel
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2
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7
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8
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4
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9
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5
Fast Ethernet 0/1port
10 Network modules
Voice Interface Numbering
Voice interfaces are numbered differently from the WAN interfaces described in the previous section.
Voice interfaces are numbered as follows:
network-module-slot/voice-module-slot/voice-interface
If a 4-channel voice network module is installed in chassis slot 1, the voice interfaces are:
•
1/0/0—Network module slot 1/Voice module slot 0/Voice interface 0
•
1/0/1—Network module slot 1/Voice module slot 0/Voice interface 1
•
1/1/0—Network module slot 1/Voice module slot 1/Voice interface 0
•
1/1/1—Network module slot 1/Voice module slot 1/Voice interface 1
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Overview of Cisco 3700 Series Routers
Power Supply Options
Power Supply Options
Table 1-3 lists the power supply options supported by Cisco 3700 series routers. Depending on the
configuration specified when you placed your order, your router may not support all of these options.
Table 1-3
Power Supply Options for Cisco 3700 Series Routers
Power Supply Option
Cisco 3725
Cisco 3745
AC input power
Yes
Yes
DC input power
Yes
Yes
–48-V telephony power module to provide inline power to IP phones
Yes
Yes
Dual hot-swappable power supplies
No
Yes 1
Compatible with Cisco Redundant Power System
Yes
Yes
1. Because of increased power consumption in high-temperature environments, a fully loaded Cisco 3745 router requires both
power supplies when ambient temperature exceeds 104°F (40°C). Cisco 3745 routers operating under these conditions do not
support the online replacement of power supplies.
Internal –48 V Telephony Power Modules
Cisco 3700 series routers provide inline power to IP phones connected to the router through Ethernet
switch network modules. This power is supplied by special –48 V modules that connect directly to the
chassis power supplies in Cisco 3725 and Cisco 3745 routers. A single –48 V power module meets the
power needs of up to 36 IP phones. A Cisco 3745 router with two –48 V power modules installed
provides redundant power for up to 36 IP phones. Figure 1-5 and Figure 1-6 show the –48 -V power
modules as they appear when installed in Cisco 3700 series routers.
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Chapter 1
Overview of Cisco 3700 Series Routers
Power Supply Options
Cisco 3725 Router with Optional –48 V Power Module Installed
72086
Figure 1-5
AC
power module
-48V
power module
Figure 1-6
Cisco 3745 Router with Optional –48 V Power Modules Installed
72085
-48V power modules
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Overview of Cisco 3700 Series Routers
System Specifications
System Specifications
Table 1-4 and Table 1-5 list Cisco 3700 series system specifications.
Table 1-4
Cisco 3725 Router System Specifications
Description
Specification
Dimensions (H x W x D)
3.5 x 17.1 x 15.0 in. (8.9 x 43.4 x 38.1 cm), 2-RU chassis height
Weight
14 lb (6.4 kg)
Input voltage, AC power supply
Frequency
Input surge current (AC)
100 to 240 VAC, autoranging
47–63 Hz
50 A maximum, one cycle (–48-V power module included)
Input rating, DC power supply
24–36 VDC, 9 A, positive or negative, operational from 18–36 VDC
36–60 VDC, 4 A, positive or negative, operational from 36–72 VDC
50 A, < 10 ms
Input surge current (DC)
Power dissipation
135 W (maximum)
Heat Dissipation
135W Maximum 460.661 BTU/hour, 495W Maximum 1689.089
BTU/hour
Console and auxiliary ports
RJ-45 connector
Operating humidity
5–95%, noncondensing
Operating temperature
32–104° F (0–40° C)
Nonoperating temperature
–40 to 162° F (–40 to 72° C)
Noise level
52 dBA (maximum)
Regulatory compliance
FCC Part 15 Class A.
For additional compliance information, see the Cisco 2600 Series,
Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance
and Safety Information document that accompanied the router.
Safety compliance
Table 1-5
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950;
AS/NZS 3260; TS001
Cisco 3745 Router System Specifications
Description
Specification
Dimensions (H x W x D)
5.25 x 17.25 x 15.00 in. (13.3 x 43.8 x 38.1 cm), 3-RU chassis height
Weight
32 lb (14.5 kg), including chassis and four network modules
Input voltage, AC power supply 100–240 VAC, autoranging
Frequency
47–63 Hz
Input surge current (AC)
80 A maximum, one cycle (–48-V power module included)
Input rating, DC power supply
Operational between
Input surge current (DC)
–48 to –60 VDC, 10 A maximum
–38 to –75 VDC, 10 A maximum
50 A, < 10 ms
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Regulatory Compliance
Table 1-5
Cisco 3745 Router System Specifications (continued)
Description
Specification
Power dissipation
230 W (maximum)
Heat Dissipation
230W Maximum 784.829 BTU/hour, 590W Maximum 2013.257
BTU/hour
Console and auxiliary ports
RJ-45 connector
Operating humidity
5–95%, noncondensing
Operating temperature
32–104° F (0–40° C)1
Nonoperating temperature
–40 to 162° F (–40 to 72° C)
Noise level
60 dBA (maximum)
Regulatory compliance
FCC Part 15 Class A.
For additional compliance information, see the Cisco 2600 Series,
Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance
and Safety Information document that accompanied the router.
Safety compliance
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950;
AS/NZS 3260; TS001
1. Because of increased power consumption in high-temperature environments, a fully loaded Cisco 3745 router requires both
power supplies when ambient temperature exceeds 104°F (40°C).
Regulatory Compliance
For compliance information, see the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series
Regulatory Compliance and Safety Information document that accompanied the router.
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2
Preparing to Install the Router
This chapter describes site requirements and equipment needed to install your Cisco 3700 series router.
It includes the following sections:
•
Safety Recommendations, page 2-1
•
General Site Requirements, page 2-3
•
Installation Checklist, page 2-5
•
Creating a Site Log, page 2-6
•
Inspecting the Router, page 2-6
•
Required Tools and Equipment for Installation and Maintenance, page 2-7
•
Console and Auxiliary Port Considerations, page 2-8
•
Preparing to Connect to a Network, page 2-9
After you have completed this chapter, proceed to Chapter 3, “Installing the Router,” for installation
instructions.
Safety Recommendations
Follow these guidelines to ensure general safety:
•
Keep the chassis area clear and dust-free during and after installation.
•
If you remove the chassis cover, put it in a safe place.
•
Keep tools and chassis components away from walk areas.
•
Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll up
your sleeves.
•
Wear safety glasses when working under conditions that might be hazardous to your eyes.
•
Do not perform any action that creates a hazard to people or makes the equipment unsafe.
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Safety Recommendations
Safety with Electricity
Follow these guidelines when working on equipment powered by electricity:
Warning
Read the installation instructions before connecting the system to the power source. Statement 1004
•
Locate the emergency power-off switch in the room in which you are working. Then, if an electrical
accident occurs, you can quickly turn off the power.
•
Disconnect all power before doing the following:
– Installing or removing a chassis
– Working near power supplies
•
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.
•
Do not work alone if hazardous conditions exist.
•
Never assume that power is disconnected from a circuit. Always check.
•
If an electrical accident occurs, proceed as follows:
– Use caution; do not become a victim yourself.
– Turn off power to the device.
– If possible, send another person to get medical aid. Otherwise, assess the victim’s condition and
then call for help.
– Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
In addition, use the following guidelines when working with any equipment that is disconnected from a
power source, but still connected to telephone wiring or other network cabling:
•
Never install telephone wiring during a lightning storm.
•
Never install telephone jacks in wet locations unless the jack is specifically designed for it.
•
Never touch uninsulated telephone wires or terminals unless the telephone line is disconnected at
the network interface.
•
Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if
electronic printed circuit cards are improperly handled and can cause complete or intermittent failures.
Always follow ESD prevention procedures when removing and replacing modules:
•
Ensure that the router chassis is electrically connected to earth ground.
•
Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to
an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To
guard against ESD damage and shocks, the wrist strap and cord must operate effectively.
•
If no wrist strap is available, ground yourself by touching a metal part of the chassis.
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General Site Requirements
Caution
For the safety of your equipment, periodically check the resistance value of the antistatic strap. It should
be between 1 and 10 megohms (Mohm).
General Site Requirements
This section describes the requirements your site must meet for safe installation and operation of your
router. Ensure that the site is properly prepared before beginning installation. If you are experiencing
shutdowns or unusually high errors with your existing equipment, this section can also help you isolate
the cause of failures and prevent future problems.
Power Supply Considerations
Check the power at your site to ensure that you are receiving “clean” power (free of spikes and noise).
Install a power conditioner if necessary.
Warning
The device is designed for connection to TN and IT power systems. Statement 1007
The AC power supply includes the following features:
•
It autoselects either 110 V or 220 V operation.
•
All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power cord indicates
the correct voltage, frequency, current draw, and power dissipation for the unit.)
Table 2-1 lists power requirements for Cisco 3700 series routers.
Table 2-1
Power Requirements for Cisco 3700 Series Routers
Router
Power Supply
Input Power
Input Voltage
Cisco 3725
AC
100–240 VAC, 10.0 A, 50–60 Hz
85–264 VAC
DC, nominal 24/48 VDC
24–36 VDC, 9 A, positive or negative input,
single or dual sources
18–72 VDC
36–60 VDC, 4 A, positive or negative input,
single or dual sources
Cisco 3745
AC
100–240 VAC, 10.0 A, 50–60 Hz
85–264 VAC
DC, nominal 24/48 VDC
24–36 VDC, 15 A, positive or negative input
18–72 VDC
36–60 VDC, 7 A, positive or negative input
DC, nominal 48 VDC
48–60 VDC, 10 A, positive or negative input
38–72 VDC
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General Site Requirements
Site Environment
Cisco 3700 series routers can be placed on a desktop or installed in a rack. The location of your router
and the layout of your equipment rack or wiring room are extremely important considerations for proper
operation. Equipment placed too close together, inadequate ventilation, and inaccessible panels can
cause malfunctions and shutdowns, and can make maintenance difficult. Plan for access to both front
and rear panels of the router.
When planning your site layout and equipment locations, remember the precautions described in the next
section, “Site Configuration,” to help avoid equipment failures and reduce the possibility of
environmentally caused shutdowns. If you are currently experiencing shutdowns or an unusually high
number of errors with your existing equipment, these precautions may help you isolate the cause of the
failures and prevent future problems.
Site Configuration
The following precautions will help you plan an acceptable operating environment for your router and
will help you avoid environmentally caused equipment failures:
•
Ensure that the room where your router operates has adequate circulation. Electrical equipment
generates heat. Without adequate circulation, ambient air temperature may not cool equipment to
acceptable operating temperatures.
•
Always follow ESD-prevention procedures described in the “Preventing Electrostatic Discharge
Damage” section on page 2-2 to avoid damage to equipment. Damage from static discharge can
cause immediate or intermittent equipment failure.
•
Ensure that the chassis cover or mainboard tray and module rear panels are secure. All empty
network module slots, interface card slots, and power supply bays must have filler panels installed.
The chassis is designed to allow cooling air to flow within it, through specially designed cooling
slots. A chassis with uncovered openings will create air leaks, which may interrupt and reduce the
flow of air across internal components.
Equipment Racks
Cisco 3700 series routers include brackets for use with a 19-inch rack or, if specified in your order,
optional larger brackets for use with a 23-inch rack.
The following information will help you plan your equipment rack configuration:
•
Allow clearance around the rack for maintenance.
•
Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each
router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air.
Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports
of the equipment above.
•
When mounting a chassis in an open rack, ensure that the rack frame does not block the intake ports
or exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is
seated into the rack.
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Installation Checklist
•
Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through
the chassis. The best placement of the baffles depends on the airflow patterns in the rack, which can
be found by experimenting with different configurations.
•
When equipment installed in a rack (particularly in an enclosed rack) fails, try operating the
equipment by itself, if possible. Power down other equipment in the rack (and in adjacent racks) to
allow the router being tested a maximum of cooling air and clean power.
Installation Checklist
The sample installation checklist lists items and procedures for installing a new router. Make a copy of
this checklist and mark the entries when completed. Include a copy of the checklist for each router in
your site log (described in the next section, “Creating a Site Log”).
Installation checklist for site_____________________________________________
Router name_______________________________________________________
Task
Verified by
Date
Installation checklist copied
Background information placed in site log
Site power voltages verified
Installation site power check completed
Required tools available
Additional equipment available
Router received
Router quick start guide received
Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700
Series Regulatory Compliance and Safety Information
document received
Product registration card received
Cisco.com contact information label received
Chassis components verified
Initial electrical connections established
ASCII terminal (for local configuration) or
modem (for remote configuration) available
Signal distance limits verified
Startup sequence steps completed
Initial operation verified
Software image verified
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Creating a Site Log
Creating a Site Log
The site log provides a record of all actions related to the router. Keep it in an accessible place near the
chassis where anyone who performs tasks has access to it. Use the installation checklist to verify steps
in the installation and maintenance of the router. Site Log entries might include the following
information:
•
Installation progress—Make a copy of the installation checklist and insert it into the site log. Make
entries as each procedure is completed.
•
Upgrade and maintenance procedures—Use the site log as a record of ongoing router maintenance
and expansion history. A site log might include the following events:
– Installation of network modules
– Removal or replacement of network modules and other upgrades
– Configuration changes
– Maintenance schedules and requirements
– Maintenance procedures performed
– Intermittent problems
– Comments and notes
Inspecting the Router
Do not unpack the router until you are ready to install it. If the final installation site will not be ready
for some time, keep the chassis in its shipping container to prevent accidental damage. When you are
ready to install the router, proceed with unpacking it.
The router, cables, publications, and any optional equipment you ordered may be shipped in more than
one container. When you unpack the containers, check the packing list to ensure that you received all the
following items:
•
Router
•
6-foot (1.8-meter) power cord
•
Rack-mount brackets
•
Ground lug
•
Cable guides (for Cisco 3725 routers)
•
RJ-45-to-DB-9 adapter cable
•
RJ-45-to-DB-25 adapter cable
•
Optional equipment (such as network connection cables or additional rack-mount brackets)
•
Cisco 3725 Router Quick Start Guide, if applicable
•
Cisco 3745 Router Quick Start Guide, if applicable
•
Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety
Information document
Inspect all items for shipping damage. If anything appears to be damaged, or if you encounter problems
installing or configuring your router, contact customer service. Warranty, service, and support
information is in the quick start guide that shipped with your router.
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Required Tools and Equipment for Installation and Maintenance
Required Tools and Equipment for Installation and Maintenance
You need the following tools and equipment to install and upgrade the router and its components:
•
ESD-preventive cord and wrist strap
•
Number 2 Phillips screwdriver
•
Flat-blade screwdrivers: small, about 3/16-in. (0.5 cm) and medium, about 1/4-in. (0.6-cm)
– To install or remove modules
– To remove the cover or mainboard tray, if you are upgrading memory or other components
•
Screws that fit your rack
•
Wire crimper
•
AWG 6 (13 mm2) wire to connect the router chassis to earth ground
In addition, depending on the type of modules you plan to use, you might need the following equipment
to connect a port to an external network:
•
Cables for connection to the WAN and LAN ports (dependent on configuration)
Note
For more information on cable specifications, see the online document Cisco Modular
Access Router Cable Specifications located on Cisco.com.
•
Ethernet hub or PC with a network interface card for connection to the Ethernet (LAN) ports
•
Console terminal (an ASCII terminal or a PC running terminal emulation software) configured for
9600 bps, 8 data bits, no parity, and 2 stop bits
•
Modem for connection to the auxiliary port for remote administrative access (optional)
•
Token Ring media attachment unit (MAU) for any Token Ring interfaces installed in your router
•
Data service unit (DSU) or channel service unit/data service unit (CSU/DSU) as appropriate for
serial interfaces
•
External CSU for any CT1/PRI modules without a built-in CSU
•
NT1 device for ISDN BRI S/T interfaces (if not supplied by your service provider)
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Console and Auxiliary Port Considerations
Console and Auxiliary Port Considerations
The router includes an asynchronous serial console port and an auxiliary port. The console and auxiliary
ports provide access to the router either locally using a console terminal connected to the console port,
or remotely using a modem connected to the auxiliary port. This section discusses important cabling
information to consider before connecting the router to a console terminal or modem.
The main difference between the console and auxiliary ports is that the auxiliary port supports hardware
flow control and the console port does not. Flow control paces the transmission of data between a
sending device and a receiving device. Flow control ensures that the receiving device can absorb the data
sent to it before the sending device sends more. When the buffers on the receiving device are full, a
message is sent to the sending device to suspend transmission until the data in the buffers has been
processed. Because the auxiliary port supports flow control, it is ideally suited for use with the
high-speed transmissions of a modem. Console terminals send data at slower speeds than modems;
therefore, the console port is ideally suited for use with console terminals.
Console Port Connections
The router has an EIA/TIA-232 asynchronous serial console port (RJ-45). Depending on the cable and
the adapter used, this port will appear as a DTE or DCE device at the end of the cable.
For connection to a PC running terminal emulation software, your router is provided with an RJ-45 to
DB-9 adapter cable.
To connect the router to an ASCII terminal, use an RJ-45 rollover cable and an RJ-45-to-DB-25 female
adapter (not provided).
The default parameters for the console port are 9600 bps, 8 data bits, no parity, and 2 stop bits. The
console port does not support hardware flow control. For detailed information about installing a console
terminal, see the “Connecting to a Console Terminal or Modem” section on page 3-22.
For cable and port pinouts, see the document Cisco Modular Access Router Cable Specifications on
Cisco.com.
Auxiliary Port Connections
The router has an EIA/TIA-232 asynchronous serial auxiliary port (RJ-45) that supports flow control.
Depending on the cable and the adapter used, this port will appear as a DTE or DCE device at the end
of the cable.
For connection to a modem, your router is provided with an RJ-45-to-DB-25 adapter cable.
For detailed information about connecting devices to the auxiliary port, see the “Connecting to a Console
Terminal or Modem” section on page 3-22.
For cable and port pinouts, see the document Cisco Modular Access Router Cable Specifications on
Cisco.com.
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Preparing to Connect to a Network
Preparing to Connect to a Network
When setting up your router, consider distance limitations and potential electromagnetic interference
(EMI) as defined by the applicable local and international regulations.
Network connection considerations are provided for several types of network interfaces and are
described in the following sections:
•
Ethernet Connections, page 2-9
•
Token Ring Connections, page 2-10
•
Serial Connections, page 2-10
•
ISDN BRI Connections, page 2-12
•
56-K/Switched-56-kbps DSU/CSU Connections, page 2-13
See the following online documents for more information about network connections and interfaces:
Warning
•
Cisco Network Modules Hardware Installation Guide
•
Cisco Interface Cards Installation Guide
•
Cisco Modular Access Router Cable Specifications
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Statement 1021
Ethernet Connections
The IEEE has established Ethernet as standard IEEE 802.3. The most common Ethernet implementations
are as follows:
•
100BASE-T—2-pair Category 5 or unshielded twisted-pair (UTP) straight-through RJ-45 cable.
•
10BASE-2—Ethernet on thin coaxial cable, also known as thin Ethernet. The maximum segment
distance is 607 feet (186 meters).
•
10BASE-5—Ethernet on thick coaxial cable, also known as thick Ethernet. The maximum segment
distance is 1,640 feet (500 meters).
•
10BASE-T—Ethernet on unshielded twisted-pair (UTP) cable. The maximum segment distance is
328 feet (100 meters). UTP cables look like the wiring used for ordinary telephones; however, UTP
cables meet certain electrical standards that telephone cables do not meet.
See the Cisco Modular Access Router Cable Specifications document for information about Ethernet
cables, connectors, and pinouts. This document is available on Cisco.com.
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Token Ring Connections
The IEEE has established Token Ring as standard IEEE 802.5. Specifications indicate a maximum
segment distance of 328 feet (100 meters) for UTP cabling.
Note
To ensure agency compliance with FCC Class B electromagnetic emissions requirements (EMI), make
sure that you use a shielded RJ-45 Token Ring cable when connecting your router to a Token Ring
network.
Token Ring can operate at two different ring speeds: 4 and 16 Mbps. All devices on the Token Ring must
use the same operating speed.
Use a Token Ring cable to connect the router to a switch. See the section “Token Ring Port Pinouts” in
the Cisco Modular Access Router Cable Specifications document for Token Ring port pinouts. This
document is available on Cisco.com.
Serial Connections
Serial connections are provided by WAN interface cards and network modules. For more information on
WAN interface cards, see the Cisco Interface Cards Installation Guide. For more information on
network modules, see the Cisco Network Modules Hardware Installation Guide. These documents are
available on Cisco.com.
Before you connect a device to a serial port, you need to know the following:
•
Type of device—data terminal equipment (DTE) or data communications equipment (DCE)—that
you are connecting to the synchronous serial interface
•
Type of connector—male or female—required to connect to the device
•
Signaling standard required by the device
Configuring Serial Connections
The serial ports on the asynchronous/synchronous serial network modules and the serial WAN interface
card use DB-60 connectors. Serial ports can be configured as DTE or DCE, depending on the serial cable
used.
Serial DTE or DCE Devices
A device that communicates over a synchronous serial interface is either a DTE or a DCE device. A DCE
device provides a clock signal that paces the communications between the device and the router. A DTE
device does not provide a clock signal. DTE devices usually connect to DCE devices. The documentation
that accompanied the device should indicate whether it is a DTE or DCE device. (Some devices have a
jumper to select either DTE or DCE mode.) Table 2-2 lists typical DTW and DCE devices.
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Table 2-2
Typical DTE and DCE Devices
Device Type
DTE
Gender
Male
Typical Devices
1
Terminal
PC
DCE
Female
2
Modem
CSU/DSU
Multiplexer
1. If pins protrude from the base of the connector, the connector is male.
2. If the connector has holes to accept pins, the connector is female.
Signaling Standards Supported
The synchronous serial ports available for the router support the following signaling standards:
EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530. You can order a Cisco DB-60 shielded serial
transition cable that has the appropriate connector for the standard you specify. The documentation for
the device you want to connect should indicate the standard used for that device. The router end of the
shielded serial transition cable has a DB-60 connector, which connects to the DB-60 port on a serial
WAN interface card. The other end of the serial transition cable is available with a connector appropriate
for the standard you specify.
The synchronous serial port can be configured as DTE or DCE, depending on the attached cable (except
EIA-530, which is DTE only). To order a shielded cable, contact customer service. See the “Obtaining
Technical Assistance” section on page xvii.
Note
All serial ports configured as DTE require external clocking from a CSU/DSU or other DCE device.
Although manufacturing your own serial cables is not recommended (because of the small size of the
pins on the DB-60 serial connector), cable pinouts are provided in the Cisco Modular Access Router
Cable Specifications document.
Distance Limitations
Serial signals can travel a limited distance at any given bit rate; generally, the slower the data rate, the
greater the distance. All serial signals are subject to distance limits, beyond which a signal significantly
degrades or is completely lost.
Note
Only the serial WAN interface card supports bit rates above 128 kbps.
Table 2-3 lists the recommended maximum speeds and distances for each serial interface type. However,
you might get good results at speeds and distances greater than those listed if you understand the
electrical problems that might arise and can compensate for them. For instance, the recommended
maximum rate for V.35 is 2 Mbps, but 4 Mbps is commonly used.
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Table 2-3
Serial Signal Transmission Speeds and Distances
EIA/TIA-232
Distance
EIA/TIA-449, X.21, V.35,
EIA-530 Distance
Rate (bps)
Feet
Meters
Feet
Meters
2400
200
60
4100
1250
4800
100
30
2050
625
9600
50
15
1025
312
19200
25
7.6
513
156
38400
12
3.7
256
78
56000
8.6
2.6
102
31
1544000 (T1)
—
—
50
15
Balanced drivers allow EIA/TIA-449 signals to travel greater distances than EIA/TIA-232 signals. The
recommended distance limits for EIA/TIA-449 shown in Table 2-3 are also valid for V.35, X.21, and
EIA-530. Typically, EIA/TIA-449 and EIA-530 can support 2-Mbps rates, and V.35 can support 4-Mbps
rates.
Asynchronous/Synchronous Serial Module Data Rates
The following data-rate limitations apply to the slow-speed serial interfaces found in the
asynchronous/synchronous serial modules:
•
Asynchronous interface—Maximum data rate is 115.2 kbps.
•
Synchronous interface—Maximum data rate is 128-kbps full duplex.
ISDN BRI Connections
The BRI WAN interface cards provide Integrated Services Digital Network (ISDN) Basic Rate Interface
(BRI) connections. The BRI modules and BRI WAN interface cards are available with either an S/T
interface that requires an external Network Termination 1 (NT1), or a U interface that has a built-in NT1.
You can install the BRI modules in any available slot in the chassis.
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first. Statement 1026
Use a BRI cable (not included) to connect the BRI WAN interface card directly to an ISDN. Table 2-4
lists the specifications for ISDN BRI cables. See the Cisco Modular Access Router Cable Specifications
online document for pinouts. This document is available on Cisco.com.
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Table 2-4
ISDN BRI Cable Specifications
Specification
High-Capacitance Cable
Low-Capacitance Cable
Resistance (at 96 kHz)
160 ohms/km
160 ohms/km
1
Capacitance (at 1 kHz)
120 nF /km
30 nF/km
Impedance (at 96 kHz)
75 ohms
150 ohms
Wire diameter
0.024 in. (0.6 mm)
0.024 in. (0.6 mm)
Distance limitation
32.8 ft (10 m)
32.8 ft (10 m)
1. nF = nanoFarad
For more information on BRI WAN interface cards, see the Cisco Interface Cards Installation Guide
online document. This document is located on Cisco.com and the Documentation CD-ROM.
56-K/Switched-56-kbps DSU/CSU Connections
Switched-56-kbps connections are provided by the 56-kbps CSU/DSU WAN interface card.
For more information on switched-56-kbps WAN interface cards, see the Cisco Interface Cards
Installation Guide document on Cisco.com.
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3
Installing the Router
This chapter describes how to install your Cisco 3700 series router and connect it to networks and
external devices. It includes the following sections:
•
Installing Modules, Interface Cards, and Power Supplies, page 3-1
•
Setting Up the Chassis, page 3-2
•
Installing the Chassis Ground Connection, page 3-8
•
Power Connections, page 3-11
•
Connecting WAN, LAN, and Voice Cables, page 3-20
•
Connecting to a Console Terminal or Modem, page 3-22
•
Powering Up the Router, page 3-26
•
Configuring the Router, page 3-29
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means of security.
Statement 1017
Installing Modules, Interface Cards, and Power Supplies
Cisco routers are normally shipped with network modules, WAN interface cards (WICs), voice interface
cards (VICs), advanced integration modules (AIMs), and power supplies already installed. If you need
to remove or install any of these items, see the applicable documents online.
For network modules:
•
Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700
Series Routers
•
Cisco Network Modules Hardware Installation Guide
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Setting Up the Chassis
For WICs and VICs:
•
Quick Start Guide: Interface Cards for Cisco 1600, 1700, 2600, 3600, and 3700 Series
•
Cisco Interface Cards Hardware Installation Guide
For AIMs:
•
Quick Start Guide: Advanced Integration Module Installation in Cisco 2600 Series, Cisco 3600
Series, and Cisco 3700 Series Routers
•
Installing Advanced Integration Modules in Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700
Series Routers
For internal power supplies:
•
Installing Field-Replaceable Units in Cisco 3745 Routers
•
Installing AC Power Supplies in Cisco 3725 Routers
For external power supplies:
•
Cisco RPS Hardware Installation Guide
For –48 V telephony power modules:
•
Installing Cisco -48 VDC Power Supplies
Note
If modules, interface cards, or power supplies need to be removed or installed, Cisco suggests that you
perform the installation or removal before you install the chassis. If a chassis cover needs to be removed,
the chassis may have to be removed from the rack to permit cover removal.
Note
The Cisco 3745 accommodates two AC or two DC hot-swappable power supplies in bays at the rear of
the unit. Each unit provides up to 230 W of power, and a single installed power supply meets the router’s
requirements. The second installed power supply provides redundancy, load sharing, and increased
system availability. Either power supply can be removed without affecting system operation.
If the required network modules, interface cards, and power supplies are already installed, proceed to
the “Setting Up the Chassis” section on page 3-2.
Setting Up the Chassis
You can set the chassis on a desktop or install it in a rack. Select the procedure that best meets the needs
of your network. These procedures are described in the following sections:
•
Setting the Chassis on a Desktop, page 3-2
•
Rack-Mounting the Chassis, page 3-3
Setting the Chassis on a Desktop
You can place Cisco 3700 series routers on a desktop or shelf.
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Setting Up the Chassis
Warning
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the
handles on modules (such as power supplies, fans, or cards); these types of handles are not designed
to support the weight of the unit. Statement 1032
Caution
Do not place anything on top of the router that weighs more than 10 lb (4.5 kg). Excessive weight on top
could damage the chassis.
After the router has been installed, you must connect the chassis to a reliable earth ground. For the
chassis ground connection procedures, see the “Installing the Chassis Ground Connection” section on
page 3-8.
Rack-Mounting the Chassis
If you are planning to rack-mount the router, do so before making network and power connections. If
you need to install network modules or interface cards, you can do so either before or after
rack-mounting the router. Ideally, you would install modules and interface cards when you have the best
access to the rear panel of the router.
Note
The Cisco 3725 requires additional clearance on the left side (as viewed from the front of the chassis) to
accommodate cooling fans. This clearance is provided through the use of special brackets. Be sure to
install the wide bracket (marked right) on the side of the chassis with the cooling fans.
The Cisco 3725 router is shipped with rack-mounting brackets for 19-inch racks. (See Figure 3-1.)
Figure 3-1
Rack-Mounting Brackets for Cisco 3725 Router
Wide bracket for
chassis side with fans
117327
LEFT
Narrow bracket for
chassis side opposite fans
RIGHT
Slots for cable tie attachment
The Cisco 3745 router is shipped with rack-mounting brackets for 19-inch racks. (See Figure 3-2.) You
can order optional bracket for 23-inch rack-mounting. (See Figure 3-3.)
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Chapter 3
Installing the Router
Setting Up the Chassis
Cisco 3745 Router—Brackets for 19-Inch Rack
Figure 3-3
Cisco 3745 Router—Brackets for 23-Inch Rack
72067
62892
Figure 3-2
Attaching Brackets to the Cisco 3725 Router
You can rack-mount a Cisco 3725 router with either the front or the rear of the chassis facing forward.
See Figure 3-4 through Figure 3-7 for bracket installation instructions.
Note
Use the screws supplied with the brackets for this installation.
Figure 3-4 and Figure 3-5 show the front-panel-forward bracket attachment locations.
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Setting Up the Chassis
Cisco 3725 Router Bracket Installation—Front Mount with Front Panel Forward
Figure 3-4
Use two screws on each side.
82687
RIGHT
LEFT
Left (narrow) bracket
Right (wide) bracket
Cisco 3725 Router Bracket Installation—Center Mount with Front Panel Forward
Figure 3-5
RIGHT
82685
LEFT
Left (narrow) bracket
Use two screws on each side.
Note
Right (wide) bracket
When installed in a rack with a 17.75-inch (45-cm) opening, the Cisco 3725 routers protrude beyond the
front of the rack.
Figure 3-6 and Figure 3-7 show the rear-panel-forward bracket attachment locations.
Cisco 3725 Router Bracket Installation—Center Mount with Rear Panel Forward
Figure 3-6
RIGHT
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Left (narrow) bracket
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Chapter 3
Installing the Router
Setting Up the Chassis
Cisco 3725 Router Bracket Installation—Rear Panel Forward
Figure 3-7
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Left (narrow) bracket
Four screws are required on each side.
Attaching Brackets to the Cisco 3745 Router
You can rack-mount a Cisco 3745 router with either the front or the rear of the chassis facing forward.
See Figure 3-8 through Figure 3-10 for bracket installation instructions.
Note
Use the screws supplied with the brackets for this installation.
Figure 3-8
Cisco 3745 Router Bracket Installation—Front Panel Forward
Cisco 37
63384
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Installing the Router
Setting Up the Chassis
Cisco 3745 Router Bracket Installation—Rear Panel Forward
Figure 3-9
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Cisco 3745 Router Bracket Installation—Center-Mount Bracket
Figure 3-10
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Mounting the Router in a Rack
The following orientations are possible for installing the router in a rack:
•
Center mounting—Brackets attached in the center of the chassis with either the front panel or the
rear panel facing forward
•
Front mounting—Brackets attached at the front of the chassis with the front panel facing forward
•
Rear mounting—Brackets attached at the rear of the chassis with the rear panel facing forward
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Chapter 3
Installing the Router
Installing the Chassis Ground Connection
Warning
Warning
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautions to ensure that the system remains stable. The following guidelines are provided to
ensure your safety:
•
This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
•
When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
•
If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in
the rack. Statement 1006
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the
handles on modules (such as power supplies, fans, or cards); these types of handles are not designed
to support the weight of the unit. Statement 1032
Using screws that you provide, attach the chassis to the rack. (See Figure 3-11.)
Mounting the Chassis in a Rack (Typical)
Cisco 37
00 SERIES
62735
Figure 3-11
Note: The brackets can also be installed with the rear panel forward.
After the router has been installed, you must connect the chassis to a reliable earth ground. For the
chassis ground connection procedures, see the “Installing the Chassis Ground Connection” section on
page 3-8.
Installing the Chassis Ground Connection
All Cisco 3700 series router chassis require a reliable earth ground connection. You must connect the
chassis to a reliable earth ground; the ground wire must be installed in accordance with local electrical
safety standards.
•
For NEBS-compliant grounding, use size AWG 6 (13 mm2) wire and the ground lug provided in the
accessory kit.
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Installing the Router
Installing the Chassis Ground Connection
•
For NEC-compliant grounding, use size AWG 14 (2 mm2) or larger wire and an appropriate
user-supplied ring terminal.
•
For EN/IEC 60950-compliant grounding, use size AWG 18 (1 mm 2) or larger wire and an
appropriate user-supplied ring terminal.
For chassis grounding instruction, see one of the following sections:
•
Cisco 3725 Router Ground Connection, page 3-9
•
Cisco 3745 Router Ground Connection, page 3-10
Cisco 3725 Router Ground Connection
To install the ground connection for a Cisco 3725 router, perform the following steps:
Step 1
Strip one end of the ground wire to the length required for the ground lug or terminal.
•
For the NEBS ground lug—approximately 0.75 inch (20 mm)
•
For user-provided ring terminal—as required
Step 2
Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3
Attach the ground lug or ring terminal to the chassis as shown in Figure 3-12 or Figure 3-13. For a
ground lug, use the two screws with captive locking washers provided. For a ring terminal, use one of
the screws provided. Use a number 2 Phillips screwdriver, and tighten the screws to a torque of 8 to
10 in-lb (0.9 to 1.1 N-m).
Step 4
Connect the other end of the ground wire to a grounding point at your site.
Figure 3-12
NEBS-Compliant Ground Wire Connection on a Cisco 3725 Router Chassis
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Chapter 3
Installing the Router
Installing the Chassis Ground Connection
Figure 3-13
Chassis Ground Connection Using Ring Terminal on a Cisco 3725 Chassis
103014
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After the router has been installed and properly grounded, you can connect the power wiring; the WAN,
LAN, and voice cables; and the cables for administrative access as required for your installation. For
cable connection procedures, see the “Power Connections” section on page 3-11, the “Connecting WAN,
LAN, and Voice Cables” section on page 3-20, and the “Connecting to a Console Terminal or Modem”
section on page 3-22.
Cisco 3745 Router Ground Connection
To install the ground connection on a Cisco 3745 router, perform the following steps:
Step 1
Strip one end of the ground wire to the length required for the ground lug or terminal.
•
For the NEBS ground lug—approximately 0.75 inch (20 mm)
•
For user-provided ring terminal—as required
Step 2
Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3
Attach the ground lug or ring terminal to the chassis as shown in Figure 3-14 or Figure 3-15. For a
ground lug, use the two screws with captive locking washers provided. For a ring terminal, use one of
the screws provided. Use a number 2 Phillips screwdriver, and tighten the screws to a torque of
8 to 10 in-lb (0.9 to 1.1 N-m).
Step 4
Connect the other end of the ground wire to a grounding point at your site.
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Installing the Router
Power Connections
Figure 3-14
NEBS-Compliant Ground Wire Connection on a Cisco 3745 Router Chassis
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Figure 3-15
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Chassis Ground Connection Using Ring Terminal on a Cisco 3745 Router Chassis
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Ring terminal
attachment
After the router has been installed and properly grounded, you can connect the power wiring; the WAN,
LAN, and voice cables; and the cables for administrative access as required for your installation. For
cable connection procedures, see the “Power Connections” section on page 3-11, the “Connecting WAN,
LAN, and Voice Cables” section on page 3-20, and the “Connecting to a Console Terminal or Modem”
section on page 3-22.
Power Connections
This section explains how to connect AC or DC power to Cisco 3725 and Cisco 3745 routers. It covers
the following topics:
•
Connecting Routers to AC Power, page 3-12
•
Connecting Routers to a DC-Input Power Supply, page 3-12
•
Connecting Routers to the Cisco Redundant Power System, page 3-20
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Chapter 3
Installing the Router
Power Connections
Connecting Routers to AC Power
If your router uses AC power, connect it to a 15 A, 120 VAC (10 A, 240 VAC) circuit with overcurrent
protection.
Note
The input voltage tolerance limits for AC power are 85 and 264 VAC.
Warning
AC connected units must have a permanent ground connection in addition to the power cable ground
wire. NEBS-compliant grounding satisfies this requirement. Statement 284
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
15A, 120VAC (10A, 240VAC). Statement 1005
Caution
To comply with Telcordia NEBS GR-1089-Core and EN 300386 requirements, you must use foil
twisted-pair cable that is properly grounded at both ends.
Connecting Routers to a DC-Input Power Supply
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Use copper conductors only. Statement 1025
Note
The installation must comply with the 1996 National Electric Code (NEC) and other applicable codes.
If your router has a DC-input power supply, follow the directions in this section for proper wiring.
A router with a DC-input power supply has a terminal block for the DC power connections.
Depending on the type of router you are installing, see one of the following procedures:
•
Wiring the DC-Input Power Supply in Cisco 3725 Routers, page 3-12
•
Wiring the DC-Input Power Supply in Cisco 3745 Routers, page 3-17
Wiring the DC-Input Power Supply in Cisco 3725 Routers
If your Cisco 3725 router has a DC-input power supply, follow the directions in this section for proper
wiring.
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Power Connections
DC Wiring Requirements for Cisco 3725 Routers
Warning
Caution
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
15A, 60VDC. Statement 1005
Dual sources with opposite-polarity grounding damage equipment.
A Cisco 3725 router with a DC-input power supply requires copper wire and crimp-type terminals for
the power connections. Table 3-1 summarizes the wiring requirements.
Table 3-1
DC Wiring Requirements for Cisco 3725 Routers
DC Power
Source
DC Input
DC Input
Wire Size
Safety Ground
Wire Size
Wire Terminal (Lug)
Overcurrent
Protection
Nominal 24/48 24–36 VDC, 9 A, positive or
VDC1
negative, single source or dual
sources
AWG 18
(1.0 mm2)
AWG 14
(2.0 mm2)
Molex part number
19193-0017, or equivalent
15 A
maximum
36–60 VDC, 4 A, positive or
negative, single source or dual
sources
AWG 18
(1.0 mm2)
AWG 14
(2.0 mm2)
Molex part number
19193-0017, or equivalent
15 A
maximum
1. The input voltage tolerance limits for DC power are 18 and 72 VDC.
Wiring Procedure for Cisco 3725 Routers
To connect a Cisco 3725 router to a DC power source, perform the following steps:
Step 1
Tip
Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the
circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the
circuit-breaker switch in the OFF position.
Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
Step 2
Strip the wires to the appropriate length for the terminals. The strip length is 1/8 to 3/16 inch (3 to 5 mm)
for Molex number 19193-0009 and for AMP number 324159-0 terminals.
Step 3
Crimp the terminals to the power input and safety ground wires.
Warning
When stranded wiring is required, use approved wiring terminations, such as closed-loop or
spade-type with upturned lugs. These terminations should be the appropriate size for the wires and
should clamp both the insulation and conductor. Statement 1002
Step 4
Remove the plastic cover from the terminal block. Save it for reinstallation after you finish wiring.
Step 5
Connect the DC power input wires to the terminal block as shown in Figure 3-16. To avoid interference
with the on/off switch, organize the wires downward from the terminal block.
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Power Connections
Caution
The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated.
The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The
ground wire should always be connected first and disconnected last. Statement 239
Do not overtorque the terminal block contact screws. Recommended torque is 8.0 ± 0.5 in-lb
(0.9 ± 0.05 N-m).
Figure 3-16
DC Power Connections
-DC, input A
Return, input A
Safety ground
Return, input B
-DC, input B
A
+
+
Return, input A
+DC, input A
Safety ground
+DC, input B
Return, input B
A +
B
+ B
Terminal
block
Terminal
block
Negative DC input
Step 6
Warning
Positive DC input
95967
Warning
Install the plastic cover over the terminals. (See Figure 3-17.)
The safety cover is an integral part of the product. Do not operate the unit without the safety cover
installed. Operating the unit without the cover in place will invalidate the safety approvals and pose
a risk of fire and electrical hazards. Statement 117
Step 7
Organize and secure the wires using cable ties as shown in Figure 3-17.
Step 8
Turn on power to the DC circuit.
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Approved Scenarios and Scenarios Not Approved for Dual DC Power Supply Configuration in Cisco 3725 Routers
You can connect a single DC power source to either the A input or the B input. If there are dual power
sources, connect one source to the A input and one source to the B input. Both sources must be the same
polarity (with respect to ground) and voltage (within 0.25 volts). Do not connect –DC grounded and +DC
grounded dual sources to a Cisco 3725 router.
Caution
Dual sources with opposite-polarity grounding can damage equipment.
In Figure 3-18, either the positive source terminal or the negative source terminal is tied to ground.
Connecting to One Source Only—Source A or Source B
A-
+
A+
A-
+
A+
B+
B+
B-
B-
127037
Figure 3-18
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Installing the Router
Power Connections
In Figure 3-19, source A and source B share common negative terminal connections.
Figure 3-19
Connecting Source A and Source B with Common Negative Terminals
A-
+
Va
A+
+
B+
B-
127039
Vb
In Figure 3-20, source A and source B share common positive terminal connections. This is allowed only
if Va equals Vb (within 0.25 V).
Caution
When connecting source A and source B with common positive terminals, if source A and source B
voltages are unequal by more than 0.25 V, the higher-voltage source can discharge into the lower-voltage
source through the A- and B- input terminals. Excessive discharging currents through these terminals
can cause one or both of the dual input DC power supply's internal A- or B- fuses to open, resulting in
lack of redundancy or system failure. When source A and source B are within 0.25 V, discharge current
is minimal.
Note
When source A and source B are wired with common negative terminals, as in Figure 3-19, discharging
does not occur and there is no restriction requiring that source A and source B voltages be equal.
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Figure 3-20
Connecting Source A and Source B with Common Positive Terminals
Va voltage = Vb voltage (greater than 0.25 V)
Va voltage = Vb voltage (within 0.25 V)
A-
A-
Va
+
A+
+
A+
+
B+
Vb
B+
Vb
B-
Caution
Va
B-
127040
+
In Figure 3-21, source A and source B are wired with opposite polarity grounds. Do not use this DC input
configuration.
Figure 3-21
Source A and Source B Wired with Opposite-Polarity Grounds
A-
+
Va
A+
+
B+
B-
127041
Vb
Wiring the DC-Input Power Supply in Cisco 3745 Routers
If your Cisco 3745 router has a DC-input power supply, follow the directions in this section for proper
wiring.
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Chapter 3
Installing the Router
Power Connections
DC Wiring Requirements for Cisco 3745 Routers
A Cisco 3745 router with a DC-input power supply requires copper wire for the power connections.
Table 3-2 summarizes the wiring requirements.
Note
Table 3-2
Two types of DC input power supply can be installed in a Cisco 3745 router: power supplies rated at
24/48 VDC nominal input, and power supplies rated at 48 VDC nominal input. Table 3-2 summarizes
the wiring requirement for both power supplies.
DC Wiring Requirements for Cisco 3745 Routers
Installed Power Supply
DC Input
DC Input Wire
Size
Safety Ground
Wire Size
Nominal 24/48 VDC1
24–36 V,
15 A
AWG 12
(3.0 mm2)
36–60 V,
7A
AWG 12 or 14
(3.0 or 2.0 mm2)
Identified by the following printed
label:
CISCO 3745
~
100-240V 50/60Hz 10A
OR Input +/- 24-36 V
15 A
36-60 V
7A
!
Nominal 48 VDC2
Identified by the following printed
label:
Wire Terminal (Lug)
Overcurrent
Protection
AWG 12
(3.0 mm2),
minimum
Amp/Tyco No.
52961 or equivalent
20 A
maximum
AWG 12
(3.0 mm2),
minimum
For AWG 12:
Amp/Tyco No.
52961 or equivalent
20 A
maximum
For AWG 14: Molex
No. 19099-0017 or
equivalent
48–60 V,
10 A
AWG 14 or 16
(2.0 or 1.2 mm2)
AWG 14
(2.0 mm2),
minimum
For AWG 14 or 16:
Molex No.
19099-0017 or
equivalent
20 A
maximum
CISCO 3745
!
~
100-240V 50/60Hz, 10A
OR 48-60V
, 10A
1. The input voltage tolerance limits for nominal 24/48-V power supplies are 18 and 72 VDC.
2. The input voltage tolerance limits for nominal 48-V power supplies are 38 and 72 VDC.
Wiring Procedure for DC Input
To connect the router to a DC power source, perform the following steps:
Step 1
Tip
Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the
circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the
circuit-breaker switch in the OFF position.
Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
Step 2
Strip the wires to the appropriate length for the terminals. The strip length is 1/8 to 3/16 inch (3 to 5 mm)
for Molex number 19073-0009 terminals and for AMP/Tyco number 52961 terminals.
Step 3
Crimp the terminals onto the DC power input wires.
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Installing the Router
Power Connections
Warning
When stranded wiring is required, use approved wiring terminations, such as closed-loop or
spade-type with upturned lugs. These terminations should be the appropriate size for the wires and
should clamp both the insulation and conductor. Statement 1002
Step 4
Remove the plastic cover from the terminal block. Save it for reinstallation after you finish wiring.
Step 5
Connect the DC power input wires to the terminal block as shown in Figure 3-22 or Figure 3-23.
Warning
Caution
The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated.
The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The
ground wire should always be connected first and disconnected last. Statement 239
Do not overtorque the terminal block screws. The recommended torque is 8.0 ± 0.5 in-lb
(0.9 ± 0.05 N-m).
Figure 3-22
Terminal Block Connections for Negative Polarity DC Input Power in Cisco 3745 Router
Negative polarity input
0V (return)
88658
Safety ground
Figure 3-23
Terminal Block Connections for Positive Polarity DC Input Power in Cisco 3745 Router
0V (return)
Positive polarity input
88657
Safety ground
Step 6
Warning
Step 7
Install the plastic cover over the terminal block.
The safety cover is an integral part of the product. Do not operate the unit without the safety cover
installed. Operating the unit without the cover in place will invalidate the safety approvals and pose
a risk of fire and electrical hazards. Statement 117
Secure the wires using cable ties.
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Chapter 3
Installing the Router
Connecting WAN, LAN, and Voice Cables
Step 8
If your router has a second power supply installed, repeat Step 1 through Step 7 for the second power
supply.
Step 9
Turn on power to the DC circuit.
Connecting Routers to the Cisco Redundant Power System
If your router uses the Cisco Redundant Power System (RPS), see the Cisco RPS Hardware Installation
Guide for instructions about the power connections. You can access this document at the location
described in the “Obtaining Documentation” section on page xvi.
Connecting WAN, LAN, and Voice Cables
This section describes how to connect the WAN, LAN, and voice interface cables. It includes the
following topics:
Note
Warning
•
“Ports and Cabling” section on page 3-20
•
“Connection Procedures and Precautions” section on page 3-21
One or two Ethernet cables are typically provided with the router. Additional cables and transceivers can
be ordered from Cisco. For ordering information, see the Cisco Product Catalog at
http://www.cisco.com/en/US/products/products_catalog_links_launch.html. For cable pinouts, see the
Cisco Modular Access Router Cable Specifications document available on Cisco.com.
Do not work on the system, or connect or disconnect cables during periods of lightning activity.
Statement 1001
Ports and Cabling
Table 3-3 summarizes some typical WAN, LAN, and voice connections for Cisco 3700 series routers.
The connections summarized here are also described in detail in the following documents:
•
Cisco Modular Access Router Cable Specifications
•
Cisco Network Modules Hardware Installation Guide
•
Cisco Interface Cards Hardware Installation Guide
You can access these documents at the location described in the “Obtaining Documentation” section on
page xvi.
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Installing the Router
Connecting WAN, LAN, and Voice Cables
Table 3-3
WAN, LAN, and Voice Connections
Port or Connection
Port type, color
Connection
Cable
Fast Ethernet
RJ-45, yellow,
Ethernet hub
Straight-through Ethernet
T1/E1 WAN
RJ-48C/CA81A,
blue
T1 or E1 network
RJ-48 T1/E1
Cisco serial
60-pin D-sub, blue
CSU/DSU and serial network or
equipment
Cisco Smart Serial
Cisco Smart
CSU/DSU and serial network or
compact connector, equipment
blue
For WIC-2T and WIC-2A/S only
Cisco serial transition cable that matches
the signaling protocol (EIA/TIA-232,
EIA/TIA-449, V.35, X.21, or
EIA/TIA-530) and the serial port
operating mode (DTE or DCE).
See the Cisco Modular Access Router
Cable Specifications document for
information about selecting these cables.
DSL1
RJ-11C/CA11A,
lavender
Network demarcation device for
service provider’s DSL interface
RJ-11
T1/E1 digital voice
RJ-48C/CA81A,
tan
Digital PBX
RJ-48 T1/E1 cable
Analog voice FXS2
RJ-11, gray
Telephone, fax
RJ-11
RJ-11, pink
Central office, analog PBX
RJ-11
RJ-11, brown
Analog PBX
RJ-11
BRI S/T WAN
(external NT1)
RJ-45/CB-1D,
orange
NT1 device or private integrated
network exchange (PINX)
RJ-45 straight-through
BRI U WAN
(built-in NT1)
RJ-49C/CA-A11,
red
ISDN network
RJ-48 straight-through
CT1/PRI
T1
External T1 CSU
DB-15 T1 serial cable
CT1/PRI-CSU
T1
RJ-48C/CA81A interface
RJ-48 straight-through
CE1/PRI
E1
E1 network
DB-15 to BNC, DB-15 to DB-15, DB-15
to twinax, or DB-15 to RJ-45
Analog voice FXO
3
Analog voice E&M
4
56/64-kbps CSU/DSU 8-pin modular, blue RJ-48S interface
RJ-48 straight-through
1. DSL = digital subscriber line.
2. FXS = foreign exchange station.
3. FXO = foreign exchange office.
4. E&M = ear and mouth.
Connection Procedures and Precautions
Connect each WAN, LAN, and voice cable to the appropriate connector on the chassis or on a network
module or interface card.
•
Position the cables carefully, so that they do not put strain on the connectors.
•
Organize cables in bundles so that cables do not intertwine.
•
Inspect the cables to make sure that the routing and bend radiuses are satisfactory. Reposition cables,
if necessary.
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Chapter 3
Installing the Router
Connecting to a Console Terminal or Modem
•
Install cable ties in accordance with site requirements.
For cable pinouts, see the online document Cisco Modular Access Router Cable Specifications.
Connecting to a Console Terminal or Modem
Your router has asynchronous serial console and auxiliary ports. These ports provide administrative
access to your router either locally (with a console terminal or PC) or remotely (with a modem).
Cisco provides the following cables and adapters for connecting your router to a console terminal, PC,
or modem:
•
One console adapter cable (RJ-45-to-DB-9, blue)
•
One modem adapter cable (RJ-45-to-DB-25, black)
This section describes how to connect a console terminal or PC to the console port, and how to connect
a modem to the auxiliary port.
Note
For information on identifying rollover cables, see the “Identifying a Rollover Cable” section on
page 3-25.
Connecting to the Console Port
To connect a console terminal or a PC running terminal emulation software to the console port on the
router, perform the following steps:
Step 1
Use the blue RJ-45-to-DB-9 console adapter cable to connect the router to a terminal. (See Figure 3-24
and Figure 3-25.)
For information about cable pinouts, see the online publication Cisco Modular Access Router Cable
Specifications, available online and on the Documentation CD-ROM.
Note
Step 2
On Cisco routers, the console port is color-coded blue.
Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, no parity,
and 2 stop bits.
Note
Because hardware flow control is not possible on the console port, we do not recommend that
modems be connected to the console port. Modems should always be connected to the
auxiliary port.
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Installing the Router
Connecting to a Console Terminal or Modem
Connecting a Console Terminal to a Cisco 3725 Router
72071
Figure 3-24
NM-HDV
AL
LP
MANUAL
BEFORE
INSTALLATI
ON
CD
TD
DSU
56K
RD
SEE MANU
AL BEFO
RE INSTA
LLATION
LP
V0
EN
AL
CD
E1
TD
CTRLR
RD
SEE
CD
E2
LP
CTRLR
AL
VWIC
BANK 4
2MFT-E1
BANK 3
BANK 2
BANK 1
BANK 0
SEE MANU
AL BEFO
RE INSTA
LLATION
DSU
56K
SEE MANU
AL BEFO
RE INSTA
LLATION
Console port
connector (RJ-45)
Laptop computer
Connecting a Console Terminal to a Cisco 3745 Router
WIC
2T
SEE MANU
AL BEFOR
CD
CONN
AL
SERIAL
1
SERIAL
0
SEE MANU
AL BEFO
RE INSTA
LLATION
TD
CONN
RD
Console port
connector
(RJ-45)
LP
Figure 3-25
E INSTA
LLATIO
N
NM-HDV
NM-HDV
DSU
56K
CONN
SERIAL
1
SERIAL
0
SEE MANU
AL BEFO
RE INSTA
LLATION
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
CONN
WIC
2T
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
NM-HDV
EN
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
NM-HDV
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
V0
EN
V0
EN
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
72068
V0
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
V0
EN
Laptop computer
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Chapter 3
Installing the Router
Connecting to a Console Terminal or Modem
Connecting to the Auxiliary Port
To connect a modem to the auxiliary port on the router, perform the following steps:
Step 1
Use the black RJ-45-to-DB-25 modem adapter cable to connect the router to a modem. (See Figure 3-26
and Figure 3-27.)
For information about cable pinouts, see the publication Cisco Modular Access Router Cable
Specifications on Cisco.com.
Make sure that your modem and the router auxiliary port are configured for the same transmission speed
(up to 115200 bps is supported) and hardware flow control with data carrier detect (DCD) and data
terminal ready (DTR) operations.
Figure 3-26
Connecting a Modem to the Auxiliary Port on a Cisco 3725 Router
72070
Step 2
NM-HDV
AL
LP
MANUAL
BEFORE
INSTALLATI
ON
CD
TD
DSU
56K
RD
SEE MANU
AL BEFO
RE INSTA
LLATION
LP
V0
EN
AL
CD
E1
TD
CTRLR
RD
SEE
CD
E2
LP
CTRLR
AL
VWIC
BANK 4
2MFT-E1
BANK 3
BANK 2
BANK 1
BANK 0
SEE MANU
AL BEFO
RE INSTA
LLATION
DSU
56K
SEE MANU
AL BEFO
RE INSTA
LLATION
AUX port
connector
(RJ-45)
Modem
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Chapter 3
Installing the Router
Connecting to a Console Terminal or Modem
Connecting a Modem to the Auxiliary Port on a Cisco 3745 Router
SEE MANU
AL BEFOR
CD
WIC
2T
TD
CONN
RD
SERIAL
0
SEE MANU
AL BEFO
RE INSTA
LLATION
LP
SERIAL
1
CONN
AL
E INSTA
LLATIO
N
NM-HDV
AUX port
connector
(RJ-45)
NM-HDV
DSU
56K
CONN
SERIAL
1
SERIAL
0
SEE MANU
AL BEFO
RE INSTA
LLATION
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
CONN
WIC
2T
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
NM-HDV
V0
EN
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
NM-HDV
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
72069
Figure 3-27
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
V0
EN
V0
EN
BANK
VWIC
4 BAN
2MFTE1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANUA
L
BEFOR
E
INSTAL
LATION
V0
EN
Modem
Identifying a Rollover Cable
Use a rollover cable to connect to the asynchronous serial console and auxiliary ports. You can identify
a rollover cable by comparing the two modular ends of the cable. Holding the cables side by side, with
the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color
as the wire connected to the pin on the outside of the right plug. (See Figure 3-28.) If your cable came
from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a rollover cable
reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Figure 3-28
Identifying a Rollover Cable
Pin 1 and pin 8
should be the
same color
Pin 8
H3824
Pin 1
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Chapter 3
Installing the Router
Powering Up the Router
Powering Up the Router
Warning
Caution
The plug-socket combination must be accessible at all times because it serves as the main
disconnecting device. Statement 1019
To ensure adequate cooling, never operate the router unless the unit is completely closed.
This section covers the following topics:
•
Checklist for Power Up, page 3-26
•
Front Panel Indicators, page 3-26
•
Power-Up Procedure, page 3-27
Checklist for Power Up
You are ready to power up the Cisco router if the following steps are completed:
•
The chassis is securely mounted.
•
Power and interface cables are connected.
•
Your PC terminal emulation program is configured for 9600 baud, 8 data bits, 1 stop bit, and no
parity.
•
You have selected passwords for access control.
•
You have determined the IP addresses for the Ethernet and serial interfaces.
Front Panel Indicators
The meanings of the LED indicators for Cisco 3725 and Cisco 3745 routers are described in the
following sections. For more detailed information about the LEDs, see Appendix A, “Troubleshooting.”
Cisco 3725 LED Indicators
The following indicator LEDs on the front of the chassis provide power, activity, and status information:
•
Power (green)—LED is on when power is on
•
SYS/RPS (green):
– Rapid blinking (200 ms)—System is booting
– Slow blinking (1 s)—Redundant power supply (RPS) failure
– Continuous on—System OK
•
Activity (green)—Blinks during system activity, such as interrupts and packet transfers
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Installing the Router
Powering Up the Router
Cisco 3745 LED Indicators
The following indicator LEDs on the front of the chassis provide power, activity, and status information:
•
SYS—System status:
– Blinking green during bootup—System is booting
– Continuous green—System booted and OK
– Blinking green continuing after bootup—System is in ROM monitor mode
– Amber—System malfunction
•
ACT—Activity:
– Blinking or continuous green during system activity, such as interrupts and packet transfers
•
SYS PS1 or SYS PS2—Chassis power supply number 1 or number 2 status:
– Off—Powered off, not installed, or faulty
– Continuous green—Installed and operating
– Amber—Installed and powered off or faulty
•
–48V PS1 or –48V PS2—IP power module number 1 or number 2 status:
– Off—Faulty or not installed
– Continuous green—Installed and operating
– Amber—Installed and powered off or faulty
Power-Up Procedure
To power up your Cisco router and verify that it goes through its initialization and self-test, follow this
procedure. When the procedure is finished, the Cisco router is ready to configure.
If you encounter problems when you power up the router, see Appendix A, “Troubleshooting.” For
information about the ROM monitor and the bootstrap program, see Appendix B, “Using the
ROM Monitor.” For information about the configuration register, see Appendix C, “Configuration
Register.”
Note
To view the boot sequence through a terminal session, you must have a console connection to the
Cisco router before it powers up.
Step 1
Make sure that your PC is powered up and connected as described in the “Checklist for Power Up”
section on page 3-26.
Step 2
Move the power switch to the ON position.
Note
Cisco 3745 routers may have one or two chassis power supplies. A router may operate with
either power supply or with both power supplies in use. Two power supplies provide redundancy.
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Chapter 3
Installing the Router
Powering Up the Router
The following indications appear:
•
Cisco 3725 router
– The green power LED on the front of the chassis comes on.
– The fan operates.
•
Cisco 3745 router
– The green SYS PS1 LED on the front of the chassis comes on if power supply 1 is in use; the
green SYS PS2 LED comes on if power supply 2 is in use.
– The fan operates.
Depending on your installation, Fast Ethernet (0/0, 0/1) and Network Module (Active, Ready) LEDs
might also come on.
If you encounter problems when you power up the router, see Appendix A, “Troubleshooting.”
Messages begin to appear in your terminal emulation program window.
Caution
Do not press any keys on the keyboard until the messages stop. Any keys pressed during this time are
interpreted as the first command typed when the messages stop, which might cause the router to power
down and start over. It takes a few minutes for the messages to stop.
You may see different startup messages:
•
If you see the following messages, the router has booted with a configuration file and is ready for
initial configuration using Security Device Manager (SDM).
yourname con0 is now available
Press RETURN to get started.
If SDM is installed on your router, we recommend using SDM to perform the initial configuration.
For configuration procedures using SDM, see the quick start guide that shipped with your router.
You can also access the Cisco 3700 series routers quick start guides online at:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/37xx_qsg/index.htm
•
If you see the following messages, the router has booted and is ready for initial configuration using
the setup command facility or the command line interface (CLI).
--- System Configuration Dialog --At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes/no]:
To learn how to use the setup command facility to configure the router, see the “Initial Configuration
Using the Setup Command Facility” section on page 3-29. To learn how to use the CLI to configure
the router, see the “Initial Configuration Using the CLI (Manual Configuration)” section on
page 3-32.
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Installing the Router
Configuring the Router
Note
If the rommon 1> prompt appears, your system has booted in ROM monitor mode. For information on the
ROM monitor, see the router rebooting and ROM monitor information in the Cisco IOS Configuration
Fundamentals Configuration Guide for your Cisco IOS software release.
Configuring the Router
You can configure your router by using one of the following tools:
Note
•
Security Device Manager. If your router was purchased with a VPN bundle, Security Device
Manager is installed on the router. See the “Initial Configuration Using SDM” section on page 3-29.
•
Setup command facility. You can use the setup command facility to prompt you for basic router
information. After the configuration file has been created, you can use the CLI or use Security
Device Manager to perform additional configuration. See the “Initial Configuration Using the Setup
Command Facility” section on page 3-29.
•
Command-line interface (CLI). If you prefer to use the Cisco IOS CLI, see the “Initial Configuration
Using the CLI (Manual Configuration)” section on page 3-32 for instructions on how to use the CLI.
If you need help with interface and port numbering, see the “Interface Numbering” section on page 1-5.
Initial Configuration Using SDM
If Security Device Manager has been installed on your router, the following messages appear at the end
of the startup sequence:
yourname con0 is now available
Press RETURN to get started.
For configuration procedures using SDM, see the quick start guide that shipped with your router.
You can also access the Cisco 3700 series routers quick start guides online at:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/37xx_qsg/index.htm
Initial Configuration Using the Setup Command Facility
This section shows how to use the setup command facility to configure a host name for the router, set
passwords, and configure an interface for communication with the management network. If you see the
following messages at the end of the startup sequence, the setup command facility has been invoked
automatically:
--- System Configuration Dialog --At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes/no]:
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Installing the Router
Configuring the Router
The setup command facility prompts you for basic information about your router and network, and it
creates an initial configuration file.The prompts vary, depending on your router model, the installed
interface modules, and the software image. The following example and the user entries (in bold) are
shown as examples only.
For a description of the interface numbering, see the “Interface Numbering” section on page 1-5.
Note
Step 1
If you make a mistake while using the setup command facility, you can exit and run the setup command
facility again. Press Ctrl-C, and enter setup at the privileged EXEC mode prompt (Router#).
To proceed using the setup command facility, enter yes when the power-up messages have ended.
Would you like to enter the initial configuration dialog? [yes/no]: yes
Step 2
When the following messages appear, press Return to enter basic management setup:
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system
Would you like to enter basic management setup? [yes/no]: yes
Step 3
Enter a host name for the router (this example uses 3700):
Configuring global parameters:
Enter host name [Router]:
Step 4
3700
Enter an enable secret password. This password is encrypted (more secure) and cannot be seen when you
view the configuration:
The enable secret is a password used to protect access to
privileged EXEC and configuration modes. This password, after
entered, becomes encrypted in the configuration.
Enter enable secret: xxxxxx
Step 5
Enter an enable password that is different from the enable secret password. This password is not
encrypted (less secure) and can be seen when you view the configuration:
The enable password is used when you do not specify an
enable secret password, with some older software versions, and
some boot images.
Enter enable password: xxxxxx
Step 6
Enter the virtual terminal password, which prevents unauthenticated access to the router through ports
other than the console port:
The virtual terminal password is used to protect
access to the router over a network interface.
Enter virtual terminal password: xxxxxx
Step 7
Respond to the following prompts as appropriate for your network:
Configure SNMP Network Management? [yes]:
Community string [public]:
Step 8
A summary of the available interfaces is displayed.
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Installing the Router
Configuring the Router
Note
The interface numbering that appears is dependent on the type of Cisco modular router platform
and on the installed interface modules and cards.
Current interface summary
Controller Timeslots D-Channel Configurable modes Status
T1 0/0
24
23
pri/channelized
Administratively up
Interface
FastEthernet0/0
FastEthernet0/1
Step 9
IP-Address
unassigned
unassigned
OK? Method Status
NO unset up
NO unset up
Prol
up
dow
Choose one of the available interfaces for connecting the router to the management network:
Enter interface name used to connect to the
management network from the above interface summary: fastethernet0/0
Step 10
Respond to the following prompts as appropriate for your network:
Configuring interface FastEthernet0/0:
Use the 100 Base-TX (RJ-45) connector? [yes]: yes
Operate in full-duplex mode? [no]: no
Configure IP on this interface? [yes]: yes
IP address for this interface: 172.1.2.3
Subnet mask for this interface [255.255.0.0] : 255.255.0.0
Class B network is 172.1.0.0, 16 subnet bits; mask is /16
The configuration is displayed:
The following configuration command script was created:
hostname fig
enable secret 5 $1$D5P6$PYx41/lQIASK.HcSbfO5q1
enable password xxxxxx
line vty 0 4
password xxxxxx
snmp-server community public
!
no ip routing
!
interface FastEthernet0/0
no shutdown
media-type 100BaseX
half-duplex
ip address 172.1.2.3 255.255.0.0
!
interface FastEthernet0/1
shutdown
no ip address
!
end
Step 11
Respond to the following prompts. Choose [2] to save the initial configuration.:
[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.
Enter your selection [2]: 2
Building configuration...
Use the enabled mode 'configure' command to modify this configuration.
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Chapter 3
Installing the Router
Configuring the Router
Press RETURN to get started!
Step 12
The user prompt appears:
3700>
After you complete the initial configuration tasks, your Cisco router is ready to configure for specific
functions. For configuration procedures, see the Software Configuration Guide for Cisco 2600 Series,
Cisco 3600 Series, and Cisco 3700 Series Routers or the Cisco IOS software configuration
documentation. You can access these documents on Cisco.com.
Initial Configuration Using the CLI (Manual Configuration)
This section shows how to bring up a command-line interface (CLI) prompt for configuration using the
CLI, and it directs you to documentation for the CLI configuration.You can use the CLI if you see the
following messages at the end of the startup sequence:
--- System Configuration Dialog --At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes/no]:
Note
If these messages do not appear, SDM and a default configuration file have been installed on the router
at the factory. To use SDM to configure the router, see the quick start guide that shipped with your router.
You can also access the Cisco 3700 series routers quick start guides online at:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/37xx_qsg/index.htm
Note
Step 1
To avoid losing work you have completed, be sure to save your configuration occasionally as you
proceed. Use the copy running-config startup-config command to save the configuration to NVRAM.
To proceed with manual configuration using the CLI, enter no.
Would you like to enter the initial configuration dialog? [yes/no]: no
Step 2
Press Return to terminate autoinstall and continue with manual configuration.
Would you like to terminate autoinstall? [yes] Return
Several messages are displayed, ending with a line similar to the following:
...
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled <date> <time> by <person>
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Chapter 3
Installing the Router
Configuring the Router
Step 3
Press Return to bring up the Router> prompt.
...
flashfs[4]: Initialization complete.
Router>
Step 4
Enter privileged EXEC mode.
Router> enable
Router#
For configuration using the CLI, see the Software Configuration Guide for Cisco 2600 Series,
Cisco 3600 Series, and Cisco 3700 Series Routers or the Cisco IOS software configuration
documentation. You can access these documents on Cisco.com.
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Chapter 3
Installing the Router
Configuring the Router
Cisco 3700 Series Routers Hardware Installation Guide
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A P P E N D I X
A
Troubleshooting
Your Cisco 3700 series router goes through extensive testing and burn-in before leaving the factory. If
you encounter problems, use the information in this appendix to help isolate problems or to eliminate
the router as the source of the problem.
This appendix includes the following sections:
Note
•
Solving Problems, page A-2
•
Reading Front-Panel LEDs, page A-4
•
Reading Rear Panel LEDs, page A-6
•
Error Messages, page A-8
•
Recovering a Lost Password, page A-12
To troubleshoot a network module, see the online Cisco Network Modules Hardware Installation Guide;
to troubleshoot interface cards, see the online Cisco Interface Cards Installation Guide.
If you cannot locate the source of the problem, contact a customer service representative for information
on how to proceed. For information about obtaining technical support, see the “Obtaining Technical
Assistance” section on page xvii. Before you call, have the following information ready:
•
Chassis type and serial number
•
Maintenance agreement or warranty information
•
Type of software and version number
•
Date you received the new chassis
•
Brief description of the problem
•
Brief explanation of the steps you have taken to isolate the problem
Cisco 3700 Series Routers Hardware Installation Guide
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A-1
Appendix A
Troubleshooting
Solving Problems
Solving Problems
The key to solving problems is to isolate the problem to a specific subsystem by comparing what the
router is doing to what it should be doing.
The LEDs on the front and rear panel of the router enable you to determine router performance and
operation. LEDs are described in the following sections:
•
Reading Front-Panel LEDs, page A-4
•
Reading Rear Panel LEDs, page A-6
When solving problems, consider the following router subsystems:
•
Power and cooling systems—External power source, power cable, router power supply and circuit
breaker, and router blower and fan. Also consider inadequate ventilation or air circulation.
•
Modules—LEDs on the modules help identify a failure.
•
Cables—External cables that connect the router to the network.
Troubleshooting the Power and Cooling Systems
Both the system LED and the fans can help you troubleshoot a power problem. Check the following
items to help isolate the problem:
•
With the power switch on, does the system LED stay on or blink?
– If the LED is green, the router is receiving power and is functional.
– If the LED is amber, the router is receiving power but is not functional.
– If the LED is off, check the power source and power cable.
•
With the power switch on and the system LED on, do the fans operate?
– If no, check the fans.
•
With the power switch on and the system LED off, do the fans operate?
– If yes, the router is receiving power. The fans are connected directly to the DC outputs of the
power supply.
– If no, check the power source and power cable.
•
Does the router shut down after being on for a short time?
– Check for an environmentally induced shutdown. See the next section, “Environmental
Reporting Features.”
– Check the environmental site requirements in the “General Site Requirements” section on
page 2-3.
– Check for a power supply failure by inspecting the system and power supply LEDs on the front
panel. If they are green, the power supplies are functional.
Cisco 3700 Series Routers Hardware Installation Guide
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Appendix A
Troubleshooting
Solving Problems
•
Router partially boots, but LEDs do not go on.
– Check for a power supply failure by inspecting the system LED on the front panel of the router.
If the system LED is on, the power supply is functional.
– If the system LED is not on, see the “Obtaining Technical Assistance” section on page xvii for
information about customer service.
– Check for a power supply failure by inspecting the power supply LEDs on the front panel. See
the “Reading Front-Panel LEDs” section on page A-4 for power supply LED descriptions.
Environmental Reporting Features
If the router is operating at an abnormally high temperature, the following message is displayed on the
console screen:
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling
problem immediately!
Some causes of abnormally high router temperature are as follows:
•
Fan failure
•
Air conditioner failure in the room
•
Air blockage to cooling vents
Take steps to correct the problem. See also the “Site Environment” section on page 2-4 and the
“Equipment Racks” section on page 2-4.
Troubleshooting Modules, Cables, and Connections
Network problems can be caused by a module; cables or cable connections; or external devices such as
a modem, transceiver, hub, wall jack, WAN interface, or terminal. Check for the following symptoms to
help isolate the problem:
•
Module is not recognized by the router.
– Make sure that the module is firmly seated in its slot.
– Check the LEDs on the module. Each module has its own set of LEDs. For information on these
LEDs, see the online Cisco Network Modules Hardware Installation Guide.
– Make sure you have a version of Cisco IOS software that supports the module. Check the online
Software Configuration Guide for Cisco 2600, Cisco 3600, and Cisco 3700 Series Routers or
accompanying configuration note for software requirements for the network module.
•
Module is recognized, but interface ports do not initialize.
– Make sure that the module is firmly seated in its slot.
– Check external cable connections.
– Make sure that you have a version of Cisco IOS software that supports the network module and
interface card. Check the Cisco Network Modules Hardware Installation Guide and the
Cisco Interface Cards Hardware Installation Guide or accompanying configuration notes for
the affected network module and interface card software requirements.
Cisco 3700 Series Routers Hardware Installation Guide
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A-3
Appendix A
Troubleshooting
Reading Front-Panel LEDs
•
Router does not boot properly, or constantly or intermittently reboots.
– Make sure that all modules are firmly seated in their slots.
– Check the router chassis or software. See the “Obtaining Technical Assistance” section on
page xvii for information about customer service.
•
Router boots, but the console screen is frozen.
– Check the external console connection.
– Verify that the parameters for your terminal are set as follows:
(a) The same data rate as configured for the router (9600 baud is the default)
(b) 8 data bits
(c) No parity generated or checked
(d) 2 stop bits
•
Router powers on and boots only when a particular module is removed.
– Check the module. See the “Obtaining Technical Assistance” section on page xvii for
information about customer service.
•
Router powers on and boots only when a particular cable is disconnected.
– There may be a problem with the module or cable. See the “Obtaining Technical Assistance”
section on page xvii for information about customer service.
Reading Front-Panel LEDs
The LEDs on the front panel of the router enable you to determine router performance and operation.
Figure A-1 and Figure A-2 show the LEDs on the front panel of the router. For an explanation of these
LEDs see Table A-1 and Table A-2.
Figure A-1
Cisco 3725 Router Front-Panel LEDs
ACT LED
SYS/RPS LED
PWR LED
PWR
SYS
RPS
ACT
Cisco 3700 SERIES
SYS
RPS
ACT
72082
PWR
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OL-2180-08
Appendix A
Troubleshooting
Reading Front-Panel LEDs
Table A-1
Cisco 3725 Router Front-Panel Indicators
LED Indicator
State
Description
PWR
Off
Router is not receiving power.
Solid green
Router is receiving power.
Off
Router is not receiving power.
Rapid blinking
System is booting up or in ROM monitor mode.
Blinking once per second
Redundant power system has failed.
Solid green
System is operating normally.
Off
No packet transfers are occurring.
Blinking
System is actively transferring packets.
SYS/RPS
ACT
Figure A-2
Cisco 3745 Router Front-Panel LEDs
SYS PS2 LED
-48 PS2 LED
-48V PS1 LED
SYS PS1 LED
ACT LED
SYS LED
72081
Cisco 3700 SERIES
Table A-2
Cisco 3745 Router Front-Panel Indicators
LED Indicator
State
Description
SYS
Off
Router is not receiving power.
Blinking green
Running ROM monitor with no errors detected.
Solid green
Router is operating normally.
Amber
Router is receiving power but malfunctioning.
Off
No interrupts or packet transfers occurring.
ACT
Solid or blinking green System is receiving interrupts, or is actively transferring
packets.
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A-5
Appendix A
Troubleshooting
Reading Rear Panel LEDs
Table A-2
Cisco 3745 Router Front-Panel Indicators
LED Indicator
State
Description
SYS PS1
and
SYS PS2
Off
Power supply not present, or failed.
Solid green
Power supply installed and operating normally.
Amber
Power supply installed and powered off, or fault condition
detected.
–48V PS1
and
–48V PS2
Off
–48-V power module not present, or failed.
Solid green
–48-V power module installed and operating normally.
Amber
–48-V power module installed and powered off, or fault
condition detected.
Reading Rear Panel LEDs
The LEDs on the rear panel of the router enable you to determine router performance and operation.
Figure A-3 and Figure A-4 show the LEDs on the rear panel of the router. For an explanation of these
LEDs, see Table A-3 and Table A-4.
Cisco 3725 Router Rear-Panel LEDs
72133
Figure A-3
NM-HDV
AL
LP
MANUAL
BEFORE
INSTALLATI
ON
CD
TD
DSU
56K
RD
SEE MANU
AL BEFO
RE INSTA
LLATION
LP
V0
EN
AL
CD
E1
TD
CTRLR
RD
SEE
CD
E2
LP
CTRLR
AL
VWIC
BANK 4
2MFT-E1
BANK 3
BANK 2
BANK 1
BANK 0
SEE MANU
AL BEFO
RE INSTA
LLATION
DSU
56K
SEE MANU
AL BEFO
RE INSTA
LLATION
FastEthernet 0/1
FastEthernet 0/0
Table A-3
CF
Cisco 3725 Router Rear-Panel Indicators
LED Indicator
State
Description
CF
Off
CompactFlash (CF) memory card can be
ejected; device is idle.
Solid or blinking green Do not eject the CF; it is busy.
Fast Ethernet 0/0 ACT
and
Fast Ethernet 0/1 ACT
Off
Interface not receiving packets.
Fast Ethernet 0/0 LINK
and
Fast Ethernet 0/1 LINK
Off
No link established.
Solid green
Link is established.
Solid or blinking green Interface receiving packets.
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Appendix A
Troubleshooting
Reading Rear Panel LEDs
Table A-3
Cisco 3725 Router Rear-Panel Indicators (continued)
LED Indicator
State
Description
Fast Ethernet 0/0 100Mbps Off
and
Fast Ethernet 0/1 100Mbps Solid green
Figure A-4
10-Mbps communication speed attained,
or no link established.
100-Mbps communication speed attained.
Cisco 3745 Router Rear-Panel LEDs
ETM NPA AIM1 AIM0
FastEthernet 0/0
FastEthernet 0/1
CF
POWER SYS
SEE MANU
AL BEFO
RE INSTA
LLATI
ON
CD
TD
WIC
2T
RD
CONN
LP
SERIAL
0
SEE MAN
UAL BEFO
RE INST
ALLATION
AL
SERIAL
1
CONN
POWER
SYSTEM
NM-HDV
NM-HDV
DSU
56K
SERIAL
1
CONN
SERIAL
0
SEE MAN
UAL BEFO
RE INST
ALLATION
BANK
VWIC
4 BAN
2MFT-E1
K 3 BAN
K 2 BAN
K 1 BAN
K0
CONN
WIC
2T
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANU
AL
BEFORE
INSTA
LLATION
NM-HDV
ETM
NPA
V0
EN
BANK
VWIC
4 BAN
2MFT-E1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
E1
SEE
MANU
AL
BEFORE
INSTA
LLATION
NM-HDV
BANK
VWIC
4 BAN
2MFT-E1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AIM1
AIM0
AL
LP
CTRLR
E1
SEE
MANU
AL
BEFORE
INSTA
LLATION
E1
SEE
MANU
AL
BEFORE
INSTA
LLATION
CD
E2
CTRLR
V0
EN
V0
BANK
VWIC
4 BAN
2MFT-E1
K 3 BAN
K 2 BAN
K 1 BAN
K0
AL
LP
CTRLR
CD
E2
CTRLR
V0
EN
Table A-4
72083
EN
Cisco 3745 Router Rear-Panel Indicators
LED Indicator
State
Description
POWER
Off
An error condition is detected in the operating ranges.
Solid green
Operating voltages on mainboard are within acceptable ranges.
Off
Router not receiving power.
Blinking green
Router running ROM monitor; no errors detected.
Solid green
Router operating normally.
Amber
Router receiving power but malfunctioning.
Off
CF can be ejected; device is idle.
SYS
CF
Solid or blinking green Do not eject CF; device is busy.
Fast Ethernet 0/0 ACT
and
Fast Ethernet 0/1 ACT
Off
Interface not receiving packets.
Fast Ethernet 0/0 LINK
and
Fast Ethernet 0/1 LINK
Off
No link established.
Solid green
Link is established.
Solid or blinking green Interface receiving packets.
Fast Ethernet 0/0 100Mbps Off
and
Solid green
Fast Ethernet 0/1 100Mbps
10-Mbps communication speed attained, or no link established.
100-Mbps communication speed attained.
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Appendix A
Troubleshooting
Error Messages
Table A-4
Cisco 3745 Router Rear-Panel Indicators (continued)
LED Indicator
State
Description
ETM
Off
Enhanced timing module (ETM) not present.
Amber
ETM present with failure.
Solid green
ETM present and enabled.
NPA
Not used
Reserved for future development.
AIM0
and
AIM1
Off
Advanced integration module (AIM) not present.
Amber
AIM present with failure.
Solid green
AIM present and enabled.
Error Messages
Cisco IOS software displays system error and recovery messages on an external device console terminal
screen. (For more information, see the “Connecting to a Console Terminal or Modem” section on
page 3-22.)
The terminal should display one of the following prompts:
Router>
(indicates the user EXEC command mode)
or
Router#
(indicates the privileged EXEC command mode)
The Cisco IOS software checks the system condition once every 30 seconds. If the condition still exists,
the error message appears again; if the error condition has cleared, a recovery message appears.
Table A-5 describes system error and recovery messages and LED conditions that might accompany
them.
Note
Table A-5 does not provide a complete list of system LED conditions. (For all LED conditions that can
occur in your router, see the “Reading Front-Panel LEDs” section on page A-4 and the “Reading Rear
Panel LEDs” section on page A-6.)
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Appendix A
Troubleshooting
Error Messages
Table A-5
System Error and Recovery Messages
LED Type
LED Color
Message
—
—
Error:
%INITSYS-1-PS:
Explanation:
The router failed to establish the environmental monitor process. This error is probably due to
insufficient memory.
Recovery:
Add memory to the router.
System
Amber
Error:
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve
cooling problem immediately!
Explanation:
The router is operating at an abnormally high temperature possibly caused by one or more of
the following conditions:
•
Fan failure
•
Air conditioner failure in the room
•
Air blockage to cooling vents
Recovery:
Check the possible causes. See also the “Site Environment” section on page 2-4 and the
“Equipment Racks” section on page 2-4.
When the error condition is resolved, the following informational message appears:
%OVERTEMP_OK, PS, LOG_ERR, 0: System temperature is now normal.
System
Amber
Error:
%THERMAL-3-PS: System detected Power System # THERMAL FAIL condition.
Explanation:
The operating temperature of the specified power supply (1 or 2) exceeded the acceptable
range possibly caused by one or more of the following conditions:
•
Fan failure
•
Air conditioner failure in the room
•
Air blockage to cooling vents
Recovery:
Check the possible causes. If you need to replace the Cisco 3745 fan assembly, see the
Installing Field-Replaceable Units in Cisco 3745 Routers hardware configuration note.
When the error condition is resolved, the following informational message appears:
%THERMOK-3-PS: Power System THERMAL condition is now normal.
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Appendix A
Troubleshooting
Error Messages
Table A-5
System Error and Recovery Messages (continued)
LED Type
LED Color
Message
PS1, PS2,
LED on
power
supply rear
panel
Amber
Error:
%PS-3-DCOUTPUTVOLTFAIL: System detected Power System # DC FAIL condition.
Explanation:
The cable connected to the specified DC power supply (1 or 2) is loose, or the DC power
supply has failed.
Recovery:
1.
Check the power supply LEDs to identify the faulty unit.
2.
Power down the faulty power supply and circuit breaker.
3.
Check that cables are seated properly and terminal blocks are wired correctly.
4.
Power up the circuit breaker and the power supply.
5.
If the error condition persists, replace the power supply. (For Cisco 3745 routers, see the
Installing Field-Replaceable Units in Cisco 3745 Routers hardware configuration note.
For Cisco 3725 routers, see the Installing Universal DC Power Supplies in Cisco 3725
Routers hardware configuration note that shipped with the new power supply.)
When the error condition is resolved, the following informational message appears:
%PS-3-DCOUTPUTVOLTOK: Power System DC condition is now normal.
PS1, PS2,
LED on
power
supply rear
panel
Amber
Error:
%PS-3-INPUTVOLTFAIL: System detected Power System # AC FAIL condition.
Explanation:
The cable connected to the specified AC power supply (1 or 2) is loose, or the AC power supply
has failed.
Recovery:
1.
Check the power supply LEDs to identify the faulty unit.
2.
Power down the faulty power supply.
3.
Check that the power cables are seated properly.
4.
Power up the power supply.
5.
If the error condition persists, replace the power supply. (For Cisco 3745 routers, see the
Installing Field-Replaceable Units in Cisco 3745 Routers hardware configuration note.
For Cisco 3725 routers, see the Installing AC Power Supplies in Cisco 3725 Routers
hardware configuration note that shipped with the new power supply.)
When the error condition is resolved, the following informational message appears:
%PS-3-INPUTVOLTOK: Power System AC condition is now normal.
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Appendix A
Troubleshooting
Error Messages
Table A-5
System Error and Recovery Messages (continued)
LED Type
LED Color
Message
System
Amber
Error:
%PS-3-MULTFAIL: There is more than one failure with the Power System #; please
PS1, PS2,
LED on
power
supply rear
panel
Amber
resolve problems immediately.
Explanation:
The specified power supply (1 or 2) has experienced multiple failures. This is a critical
condition that must be resolved immediately.
Recovery:
1.
Check the power supply LEDs to identify the faulty unit.
2.
Power down the faulty power supply and circuit breaker (for a DC power supply).
3.
Check that cables are seated properly and terminal blocks are wired correctly.
4.
Power up the circuit breaker (for a DC power supply) and the power supply.
5.
If the error condition persists, replace the power supply. See the instructions that ship with
the new power supply.)
When the error condition is resolved, the following informational message appears:
%PS-3-PSOK: Power System is now normal.
—
—
Error:
%FAN-3-FAN_FAILED: Fan # had a rotation error reported.
Explanation:
The specified fan is not rotating at the desired speed.
Recovery:
Replace the fan cage as described in the Installing Field-Replaceable Units in Cisco 3745
Routers hardware configuration note.
When the error condition is resolved, the following informational message appears:
%FAN-3-FAN_OK: Fan # had earlier reported a rotation error. It is ok now.
—
—
Error:
%OIR-6-REMCARD: Card removed from slot x, interfaces disabled.
Explanation:
The online insertion and removal (OIR) function detected the removal of a network module
processor from the specified chassis slot. The interfaces on that processor are administratively
shut down and removed. In addition, the routing table is flushed of any routes through the
removed interfaces.
For more information, see the online Cisco Network Modules Hardware Installation Guide.
This is an informational message that does not require any recovery procedure.
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Appendix A
Troubleshooting
Recovering a Lost Password
Table A-5
System Error and Recovery Messages (continued)
LED Type
LED Color
Message
—
—
Error:
%OIR-6-INSCARD: Card inserted in slot x, interfaces administratively shut down.
Explanation:
The OIR function detected the insertion of a network module processor in the specified chassis
slot. The interfaces on that processor are administratively shut down until configured, or if an
interface of that type was previously configured, it is restored to its previous state.
For more information, see the online Cisco Network Modules Hardware Installation Guide.
This is an informational message that does not require any recovery procedure.
—
—
Error:
%OIR-3-SEATED: Insert/removal failed for slot x, check card seating.
Explanation:
The OIR function detected an incorrectly seated network module in the specified chassis slot.
For more information, see the online Cisco Network Modules Hardware Installation Guide.
Recovery:
Remove and reinstall the network module in the indicated slot.
—
—
Error:
%CIRRUS-4-DOWNREV_NM: Network Module card in slot x is incompatible with the
system.
Explanation:
The network module card in the specified slot is incompatible and must be upgraded to operate
in the router.
For more information, see the online Cisco Network Modules Hardware Installation Guide.
Recovery:
Contact your technical support representative to upgrade your network module. (See the
“Obtaining Technical Assistance” section on page xvii.)
Recovering a Lost Password
You can recover a lost enable password, but an enable secret password is encrypted and is not
recoverable. If you lose an enable secret password that is configured on your router, you can replace it
with a new enable secret password.
For password recovery and replacement procedures for Cisco 3700 series routers, see the Password
Recovery Procedure for the Cisco 3700 Series Routers document at the following URL:
http://www.cisco.com/warp/public/474/pswdrec_3700.html
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A P P E N D I X
B
Using the ROM Monitor
This appendix describes the ROM monitor (also called the bootstrap program), the firmware that runs
when your Cisco 3700 series router is powered up or reset. During normal operation, the ROM monitor
helps to initialize the processor hardware and boot the operating system software. You can also use the
ROM monitor to isolate or eliminate hardware problems and recover a corrupted Cisco IOS software
image.
This appendix includes the following sections:
•
Entering ROM Monitor Mode, page B-1
•
ROM Monitor Commands, page B-2
•
ROM Monitor Syntax Conventions, page B-3
•
ROM Monitor Command Descriptions, page B-3
•
Recovering Cisco IOS Software Images, page B-8
Entering ROM Monitor Mode
To use the ROM monitor, you must have access to the console port. See the “Connecting to a Console
Terminal or Modem” section on page 3-22 for information on connecting the console cable.
There are two ways of entering the ROM monitor mode:
•
Use the reload command and the Break key to enter the ROM monitor mode for one-time use.
Break (system interrupt) is always enabled for 60 seconds after the router reboots, regardless of
whether Break is configured on or off in the configuration register (see Appendix C, “Configuration
Register”). During this 60-second period, you can break to the ROM monitor prompt by pressing the
Break key.
Note
•
If your console terminal does not have a Break key, see the terminal emulator documentation
for instructions on generating a break (system interrupt).
Set the configuration register so that the router enters the ROM monitor mode whenever it boots.
The new configuration register value, 0x0, is effective after the router is rebooted with the reload
command. The router remains in the ROM monitor and does not boot the operating system.
As long as the configuration register value remains 0x0, you must manually boot the operating
system from the console. See the boot command in the “ROM Monitor Command Descriptions”
section on page B-3.
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Appendix B
Using the ROM Monitor
ROM Monitor Commands
The two methods of entering the ROM monitor mode are as follows.
Enter ROM Monitor Mode by Using the reload Command
Connect to the router from a console, and follow these steps:
Step 1
Restart the router with the reload command.
Router# reload
Step 2
Press the Break key during the first 60 seconds of the system booting.
This forces the router into ROM monitor mode, and the ROM monitor prompt appears:
rommon 1>
Enter ROM Monitor Mode by Resetting the Configuration Register
Connect to the router from a console, and follow these steps:
Step 1
Set the bits 3, 2, 1, and 0 of the configuration register to zero.
Router# configuration-register 0x0
Step 2
Restart the router with the reload command.
Router# reload
The router boots into ROM monitor mode, and the ROM monitor prompt is displayed:
rommon 1>
Note
The number that appears in the ROM monitor prompt (1>, 2>, and so forth) is the line number. It
increments each time you enter a ROM monitor command.
ROM Monitor Commands
Enter ? or help at the ROM monitor prompt to see a list of available commands. For example:
rommon 1>
alias
boot
break
confreg
cont
context
cookie
dev
dir
dis
dnld
frame
?
set and display aliases command
boot up an external process
set/show/clear the breakpoint
configuration register utility
continue executing a downloaded image
display the context of a loaded image
display contents of cookie PROM in hex
list the device table
list files in the file system
display instruction stream
serial download a program module
print out a selected stack frame
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Using the ROM Monitor
ROM Monitor Syntax Conventions
help
history
iomemdef
meminfo
repeat
reset
rommon-pref
set
stack
sync
sysret
tftpdnld
unalias
unset
xmodem
rommon 2>
Note
monitor builtin command help
monitor command history
set IO mem to a default 25%
main memory information
repeat a monitor command
system reset
select ROMMON
display the monitor variables
produce a stack trace
write monitor environment to NVRAM
print out info from last system return
tftp image download
unset an alias
unset a monitor variable
x/ymodem image download
Not all ROM monitor commands are available on all platforms.
To display information about command syntax, enter the command name followed by -?. ROM monitor
commands are case-sensitive. Enter commands exactly as shown. You can end any command by
generating a Break (system interrupt) at the console.
ROM Monitor Syntax Conventions
ROM monitor syntax in this appendix uses the following conventions:
•
Square brackets [ ] denote an optional element. In the following example, the element abc is not
required, but you can specify it if you choose:
command [abc]
•
If a minus option is followed by a colon (for example, [-s:]) you must provide an argument for the
option.
•
A term in italics means that you must fill in the appropriate information. In the following example,
you replace the term in italics with the interface type you are using:
command interface-type
ROM Monitor Command Descriptions
This section describes some useful ROM monitor commands. See the Cisco IOS configuration guides
and command references for more information on ROM monitor commands.
Boot Commands in the ROM Monitor
The router always boots first from a Cisco IOS software image in CompactFlash memory, because there
is no separate, dedicated boot helper image ([rx]boot). The first image in CompactFlash memory
functions as the boot helper image, but you can override this by setting the BOOTLDR Monitor
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Appendix B
Using the ROM Monitor
ROM Monitor Command Descriptions
environment variable to point to another image. The first image in CompactFlash memory is invoked if
the ROM monitor does not recognize a device ID specified in the boot command. The router cannot boot
if there is no Cisco IOS software image in CompactFlash memory.
To boot a router from a Cisco IOS software image on a TFTP server (netboot), the installed DRAM must
be adequate to hold two uncompressed Cisco IOS software images: the image from CompactFlash
memory and the image downloaded from the TFTP server.
If the router is configured to boot from a TFTP server (boot bits in the configuration register are set from
2 to 15), the router first boots from the image in CompactFlash memory. It decompresses that image in
DRAM, parses the boot system commands, downloads the Cisco IOS software image from the TFTP
server, and decompresses it in DRAM. After the Cisco IOS software image from the TFTP server is in
DRAM, the DRAM memory occupied by the boot helper image is released.
Note
Booting from a TFTP server is useful if the router does not have enough CompactFlash memory to hold
large images. With a small image in CompactFlash memory (just large enough to support the necessary
interfaces), the router boots from CompactFlash, and then the larger image is downloaded from the TFTP
server.
The boot command syntax is as follows, where:
•
partition is a partition number in CompactFlash memory
•
filename is the Cisco IOS software image file name
•
tftpserver is the IP address of the TFTP server
•
-x directs the router to load the image but not execute the boot process
•
-v (Verbose) specifies that progress print setting messages and error information be displayed
boot [flash: [partition: [filename]] | slot0: [partition: [filename]] | slot1: [partition: [filename]] |
filename tftpserver] [-x] [-v]
Some examples of boot commands are as follows:
Note
In all boot commands, boot can be entered as b.
•
boot—Boots from the first Cisco IOS software image in internal CompactFlash memory.
•
boot flash:—Boots from the first Cisco IOS software image in internal CompactFlash memory.
•
boot flash: partition:—Boots from the first Cisco IOS software image in the specified partition in
internal CompactFlash memory.
•
boot flash: filename—Boots from the specified IOS software image in internal CompactFlash
memory.
•
boot flash: partition: filename—Boots from the specified Cisco IOS software image in the specified
partition in internal CompactFlash memory.
•
boot slot0:—Boots from the first Cisco IOS software image in the first partition in the
CompactFlash memory card in slot 0.
•
boot slot0:2:—Boots from the first Cisco IOS software image in the second partition in the
CompactFlash memory card in slot 0.
•
boot slot0: filename— Boots from the specified Cisco IOS software image in the CompactFlash
memory card in slot 0.
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Using the ROM Monitor
ROM Monitor Command Descriptions
•
boot slot1:3: filename—Boots from the specified Cisco IOS software image in the third partition in
the CompactFlash memory card in slot 1.
•
boot filename tftpserver— Boots from the specified Cisco IOS software image on the specified
TFTP server (after first booting from CompactFlash); for example:
boot c3725-is-mz 172.15.19.11
Note
Use the CLI commands show version and show hardware to see the source of the currently running
Cisco IOS software image.
Informational Commands in the ROM Monitor
dev—Lists boot device identifications on the router; for example:
rommon 10 > dev
Devices in device table:
id name
slot0: CF slot 0
eprom: eprom
dir device:[partition:]—Lists the files on the named device; for example:
rommon 11 > dir flash:
File size
Checksum
File name
2229799 bytes (0x220627)
0x469e
C3700-j-m2
help—Shows a summary of ROM monitor commands (equivalent to ?).
meminfo—Displays main memory size, starting address, and available range; size of packet memory;
and size of NVRAM. The following example shows the meminfo command:
rommon 9 > meminfo
Main memory size: 16 MB in 32-bit mode.
Available main memory starts at 0xa000e000, size 16328KB
IO (packet) memory size: 25 percent of main memory.
NVRAM size: 128KB
meminfo [-l]—Shows supported DRAM configurations. The following example shows an example of
the meminfo -l command:
rommon 1> meminfo -l
The following 64 bit memory configs are supported:
------------------------------------------------DIMM SOCKET 0
DIMM SOCKET 1
TOTAL MEMORY
-----------------------------------16 MB
0 MB
16 MB
16 MB
16 MB
32 MB
32 MB
0 MB
32 MB
32 MB
16 MB
48 MB
32 MB
32 MB
64 MB
64 MB
0 MB
64 MB
64 MB
16 MB
80 MB
64 MB
32 MB
96 MB
64 MB
64 MB
128 MB
128 MB
0 MB
128 MB
128 MB
16 MB
144 MB
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Using the ROM Monitor
ROM Monitor Command Descriptions
128 MB
128 MB
128 MB
rommon 2>
32 MB
64 MB
128 MB
160 MB
192 MB
256 MB
Other Useful ROM Monitor Commands
reset or i—Resets and initializes the router, similar to power up.
Debugging Commands in the ROM Monitor
Most debugging commands are functional only when Cisco IOS software has crashed or failed to
initialize (boot). Debugging commands should normally be entered only under the direction of a Cisco
engineer. If you enter a debugging command and Cisco IOS crash information is not available, the
following error message appears:
“xxx: kernel context state is invalid, cannot proceed.”
The following ROM monitor debugging commands provide information about software failures:
•
stack or k—Produces a stack trace.
•
context—Displays processor context.
•
frame—Displays an individual stack frame.
•
sysret—Displays return information from the last booted system image. This information includes
the reason for terminating the image; a stack dump of up to eight frames; and, if an exception is
involved, the address where the exception occurred; for example:
rommon 8> sysret
System Return Info:
count: 19, reason: a SegV exception
pc:0x802b1040, error address: 0x802b1040
Stack Trace:
FP: 0x80908398, PC: 0x802b102c
FP: 0x809083b0, PC: 0x802b0b88
FP: 0x809083d8, PC: 0x8017039c
FP: 0x809083e8, PC: 0x8016f764
Configuration Register
The configuration register resides in NVRAM. You can view or modify the configuration register from
either the ROM monitor or the operating system software.
For procedures used to change the configuration register from the operating system, and for information
about configuration register settings, see Appendix C, “Configuration Register.”
To modify the configuration register from the ROM monitor, use one of these methods:
•
Enter the confreg command by itself for menu mode. See the “Modifying the Configuration Register
in Menu Mode” section below.
•
Enter the confreg command plus the new hexadecimal value of the configuration register. See the
next section, “Modifying the Configuration Register by Hexadecimal Entry.”
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Using the ROM Monitor
ROM Monitor Command Descriptions
In either case, the new configuration register value is written into NVRAM, but is not effective until you
reboot (using the ROM monitor reset command) or power cycle the router.
Modifying the Configuration Register in Menu Mode
Entering the confreg command without an argument displays the contents of the configuration register,
and prompts you to alter the contents by describing the meaning of each bit.
The following display shows an example of menu mode:
rommon 7 > confreg
Configuration Summary
enabled are:
break/abort has effect
console baud: 9600
boot: the ROM Monitor
do you wish to change the configuration? y/n [n]: y
enable “diagnostic mode”? y/n [n]: y
enable “use net in IP bcast address”? y/n [n]:
enable “load rom after netboot fails”? y/n [n]:
enable “use all zero broadcast”? y/n [n]:
disable “break/abort has effect”? y/n [n]:
enable “ignore system config info”? y/n [n]:
change console baud rate? y/n [n]: y
enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200
change the boot characteristics? y/n [n]: y
enter to boot:
0 = ROM Monitor
1 = the boot helper image
2-15 = boot system
[0]: 0
[0]:
0
Configuration Summary
enabled are:
diagnostic mode
console baud: 9600
boot: the ROM Monitor
do you wish to change the configuration? y/n
[n]:
You must reset or power cycle for new config to take effect
Modifying the Configuration Register by Hexadecimal Entry
Entering the confreg command plus a hexadecimal value changes the contents of the configuration
register. The syntax is confreg [hexnum]; values entered are always interpreted as hexadecimal. The
following example changes the value of the configuration register to the factory default:
rommon 7> confreg 0x2102
You must reset or power cycle the router for new configuration to take effect.
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Using the ROM Monitor
Recovering Cisco IOS Software Images
Recovering Cisco IOS Software Images
If both the boot and system images have been erased and only the ROM monitor is available, you can
use the ROM monitor xmodem command to copy a Cisco IOS software image to CompactFlash memory
from the console. The console can be connected directly to the router through the console port, or
remotely through a modem connected to the auxiliary port.
Copying a Cisco IOS software image from the console is very slow. This procedure should be
used only in an emergency and is not recommended for normal Cisco IOS software image
upgrades.
Note
For the fastest possible download from a console, set the console speed to 115200 bps by using
the ROM monitor confreg command. See the “Configuration Register” procedure on page B-6.
Using a CompactFlash memory card to update the Cisco IOS software image is much faster than
using the console port and, when available, is the recommended method of recovering a software
image.
Note
Description and Options of the xmodem Command
The xmodem command establishes a connection between a console and the router console port for
disaster recovery, if both the boot and system images are erased from CompactFlash memory.
xmodem [filename]—Establishes an Xmodem connection between the console and the router. The
optional argument filename specifies the source file containing the Cisco IOS software image.
Other options include the following:
•
c—Uses cyclic redundancy check (CRC-16).
•
y—Uses Ymodem transfer protocol.
•
r—Copies the image to dynamic random-access memory (DRAM) for launch.
•
x—Does not launch image on completion of download.
Console Requirements
The console must have the following files to use this procedure:
•
Terminal emulation application program supporting one of the following file transfer protocols:
– Xmodem
– Xmodem–CRC
– Xmodem–1K
– Ymodem
•
Cisco IOS software image file
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Using the ROM Monitor
Recovering Cisco IOS Software Images
Procedure for the xmodem Command
To copy the Cisco IOS software image from a console to CompactFlash memory, perform the following
steps:
Step 1
Connect the console using the instructions in the “Connecting to a Console Terminal or Modem” section
on page 3-22.
Step 2
Power up the router. The power-on self-test diagnostics run, and the boot ROM searches for a valid boot
image and Cisco IOS software image in CompactFlash memory. If the boot image and Cisco IOS
software image are not found, the ROM monitor prompt appears:
rommon 1>
Step 3
Enter the xmodem command and the name of the source file containing the Cisco IOS software image:
rommon 1> xmodem filename
Step 4
Messages similar to the following appear:
Do not start upload program yet...
File size
Checksum
File name
2537948 bytes
(0x26b9dc)
3700-boot-l
WARN: This operation will ERASE bootflash. If the xmodem
download to bootflash fails, you will lose any good image
you may already have in bootflash.
Invoke this application only for disaster recovery.
Do you wish to continue? [yes/no]:
Step 5
Enter yes to copy the Cisco IOS software image into CompactFlash memory. Messages similar to the
following appear:
Ready to receive file prog ...
Erasing flash at 0x3000000
program flash location 0x3000000
Transfer complete!
The router is now ready to boot from the Cisco IOS software image. Enter the ROM monitor reset
command to reboot the router.
Note
If you have set the console speed to 115200, you may wish to reset it to the previous speed or to the
factory default speed (typically 9600 bps). See the “Configuration Register” procedure on page B-6.
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Using the ROM Monitor
Recovering Cisco IOS Software Images
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A P P E N D I X
C
Configuration Register
This appendix describes the factory default settings of the configuration register, and procedures for
changing those settings.
This appendix includes the following sections:
•
Configuration Register Settings, page C-1
•
Changing Configuration Register Settings, page C-2
•
Configuring the Boot Field, page C-3
•
Enabling Booting from CompactFlash Memory, page C-5
Configuration Register Settings
The router has a 16-bit configuration register in NVRAM. You can use the configuration register to
perform the following tasks:
•
Set and display the configuration register value.
•
Force the router into the ROM monitor (bootstrap program).
•
Select a boot source and default boot filename.
•
Enable or disable the Break function.
•
Control broadcast addresses.
•
Load operating software from ROM.
Table C-1 describes each of the configuration register bits.
Table C-1
Configuration Bit Meanings
Bit
Number
Hexadecimal
00–03
0x0000–0x000F Boot field. (See Table C-2.)
06
0x0040
Causes the system software to ignore the contents of NVRAM.
07
0x0080
OEM bit enabled.
08
0x0100
Break disabled.
09
0x0200
Causes the system to use the secondary bootstrap. This bit is typically not
used (set to 0).
Meaning
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Appendix C
Configuration Register
Changing Configuration Register Settings
Table C-1
Configuration Bit Meanings (continued)
Bit
Number
Hexadecimal
Meaning
10
0x0400
IP broadcast with all zeros.
5, 11, 12 0x0020,
Console line speed.
0x0800, 0x1000
13
0x2000
Boots default ROM software if the network boot fails.
14
0x4000
IP broadcasts do not have net numbers.
15
0x8000
Enables diagnostic messages and ignores the contents of NVRAM.
Changing Configuration Register Settings
You might want to modify the value in the configuration register to perform the following tasks:
•
Recover a lost password.
•
Change the console data rate.
•
Enable or disable the Break function.
•
Manually boot the operating system using the b command at the ROM monitor prompt.
•
Force the router to automatically boot its system image in CompactFlash memory, or boot in
accordance with any boot system commands stored in the router’s configuration file in NVRAM.
You can change the configuration register either from the ROM monitor or from the operating system
software. To change the configuration register from the ROM monitor, see the “Configuration Register”
section on page B-6. To change the configuration register from the system software, perform the
following steps:
Step 1
Connect a console terminal to the console port of the router as described in the “Connecting to the
Console Port” section on page 3-22, using the blue RJ-45 to DB-9 console adapter cable.
Note
If you have a terminal with a DB-25 port, use an RJ-45 rollover cable and DB-25 adapter. The
RJ-45-to-DB-25 adapter (Cisco part number 29-0810-01) can be purchased from Cisco.
For information about cable pinouts, see the publication Cisco Modular Access Router Cable
Specifications on Cisco.com.
Step 2
Configure your terminal or terminal emulation software for 9600 bps (default), 8 data bits, no parity, and
2 stop bits.
Step 3
Power up the router.
Step 4
When asked if you would like to enter the initial dialog, answer no:
Would you like to enter the initial dialog? [yes]: no
Your router is now in the normal operating mode.
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Configuration Register
Configuring the Boot Field
Step 5
After a few seconds, you see the user EXEC prompt ( Router>). Enter the enable command and your
password to enter privileged EXEC mode:
Router> enable
Password: password
Router#
Step 6
At the privileged EXEC prompt ( Router#), enter the configure terminal command:
Router# configure terminal
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
Step 7
Enter the config-register value command, where value is a hexadecimal number preceded by 0x (see
Table C-2), to set the contents of the configuration register:
Router(config)# config-register 0x value
Note
Cisco IOS software does not allow you to change the console speed bits directly with the
config-register command. To change the console speed, complete this sequence:
Router# configure terminal
Router(config)# line console 0
Router(config-line)# speed 9600
Step 8
Press Ctrl-Z to exit configuration mode.
Step 9
Copy the new console speed to NVRAM:
Router# copy run start
The new settings are saved to NVRAM, but they are not effective until the router restarts; for example,
when you switch the power off and on or when you enter a reload command from the console.
Step 10
Enter the show version command to display the configuration register value currently in effect and the
value that will be used at the next reload. The value is shown on the last line of the display:
Configuration register is 0x142 (will be 0x142 at next reload)
Step 11
Reboot the router. The new value is effective after the router reboots.
Configuring the Boot Field
The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. (See Table C-2.)
Table C-2
Explanation of Boot Field Configuration Register Bits (00 to 03)
Boot Field
Meaning
00
Stays at the ROM monitor on a reload or power cycle.
01
Boots the first image in CompactFlash memory as a system image.
02-F
Enables default booting from CompactFlash memory.
Enables boot system commands that override default booting from CompactFlash
memory.
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Appendix C
Configuration Register
Configuring the Boot Field
The boot field specifies a number in binary form. If you set the boot field value to 0, you must have
console port access to boot the operating system manually. See the boot command in the “ROM Monitor
Command Descriptions” section on page B-3.
If you set the boot field to a value of 2 to F, and a valid boot system command is stored in the
configuration file, the router software processes each boot command in sequence until the process is
successful or the end of the list is reached. If no boot commands are in the configuration file, the router
attempts to boot the first file in CompactFlash memory.
In the following example, the configuration register is set to boot the router automatically from
CompactFlash memory and to ignore Break at the next reboot of the router:
Router# configure terminal
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-register 0x102
Ctrl-z
Router#
Note
A boot system command in the router configuration in NVRAM overrides booting from CompactFlash
memory.
Bit 8 controls the console Break key. Setting bit 8 (the factory default) causes the processor to ignore the
console Break key. Clearing bit 8 causes the processor to interpret Break as a command to force the
router into the bootstrap monitor, halting normal operation. Break can always be sent in the first
60 seconds while the router is rebooting, regardless of the configuration settings.
Bit 9 controls the system boot. Clearing bit 9 (the factory default) causes the system to boot from
CompactFlash memory. Clearing bit 9 causes the system to use the secondary bootstrap. This bit is
typically not used.
Bit 10 controls the host portion of the IP broadcast address. Setting bit 10 causes the processor to use all
zeros; clearing bit 10 (the factory default) causes the processor to use all ones. Bit 10 interacts with
bit 14, which controls the network and subnet portions of the broadcast address. Table C-3 shows the
combined effect of bits 10 and 14.
Table C-3
Configuration Register Settings for Broadcast Address Destination
Bit 10
Bit 14
Address (<net> <host>)
Off
Off
<ones> <ones>
On
Off
<zeros> <zeros>
On
On
<net> <zeros>
Off
On
<net> <ones>
Bit 13 determines how the router responds to a bootload failure. Setting bit 13 causes the router to load
operating software from ROM after six unsuccessful attempts to load a boot file. Clearing bit 13 causes
the router to continue indefinitely to attempt loading a boot file. By factory default, bit 13 is set to 0.
Bits 5, 11, and 12 of the configuration register determine the data rate of the console terminal. Table C-4
shows the bit settings for the eight available rates. (The default data rate is 9600 bps.)
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Configuration Register
Enabling Booting from CompactFlash Memory
Table C-4
System Console Terminal Data Rate Settings
Data Rate
Bit 5
Bit 12
Bit 11
115200
1
1
1
57600
1
1
0
38400
1
0
1
19200
1
0
0
9600
0
0
0
4800
0
0
1
2400
0
1
1
1200
0
1
0
Enabling Booting from CompactFlash Memory
To enable booting from CompactFlash memory, set bits 3, 2, 1, and 0 to a value between 2 to 15. To
specify a filename to boot, enter the system software configuration command boot system flash
[device:] [partition:] [filename] in the configuration file.
By specifying the device and partition in the command, you can configure the router to boot from an
external CompactFlash card. If you specify only the filename, the router is configured to boot from
internal CompactFlash memory.
To enter global configuration mode while in the system software image, enter the configure command
at the enable prompt, as in the following example:
Router# configure
Configuring from terminal, memory, or network [terminal]? terminal
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
boot system flash filename
To disable Break and enable the boot system flash command, enter the config-register command with
a value, as follows:
Router(config)# config-reg 0x102
Router(config)# Ctrl-z
If you set the configuration register value to 0x102, as in this example, you need not enter the
boot system flash command unless more than one image is in CompactFlash memory.
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Configuration Register
Enabling Booting from CompactFlash Memory
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I N D EX
brackets, rack-mounting
Symbols
3-4
break (interrupt) command
? (help) command
C-4
B-2
C
Numerics
cables, provided
2-6
–48 V PS1 LED in Cisco 3745
A-6
Caution symbol, meaning
–48 V PS2 LED in Cisco 3745
A-6
chassis
–48 V telephony power modules
1-9, 1-10
desktop installation
dimensions
grounding
A
views
3-11, 3-12
ACT LED
3-2
1-11
3-9, 3-10, 3-11
rack-mounting
AC power connection
3-3 to 3-8
1-2, 1-3
Cisco IOS software
Cisco 3725
A-5
locating documentation
Cisco 3745
A-5
recovering images
AIMs, installing
xv
B-8
Cisco Redundant Power System
1-3
asynchronous serial data rates
CLI for configuration
2-12
3-20
3-32
CompactFlash memory
auxiliary port
connecting to
description
ix
booting from
3-24, 3-25
description
2-8
compliance
C-5
1-4
1-12
configuration
B
using CLI
using SDM
baud rate
3-29
using setup command facility
See data rate
boot command
3-32
configuration register
B-4
boot helper image
3-29
bits
B-3
booting from CompactFlash memory
boot system command
C-4
bracket installation
C-5
C-1
boot field
C-3, C-4
broadcast address
C-4
changing settings
B-6, C-2
for Cisco 3725
3-4 to 3-6
console terminal data rate
for Cisco 3745
3-6 to 3-7
enabling booting from CompactFlash memory
C-5
C-5
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
IN-1
Index
modifying from ROM monitor
settings
B-6
C-1 to C-5
confreg command
3-11, 3-12
asynchronous/synchronous serial
auxiliary port
CSU/DSU
2-10, 2-12
Cisco 3745
3-17 to 3-20
Cisco 3725
3-13
Cisco 3745
3-18
DC wiring routing
Cisco 3725
3-24
console port
3-12 to 3-15
DC wiring requirements
B-7
connections
AC power
Cisco 3725
3-15
debugging commands
2-8, 3-22
desktop installation
2-13
DCE
2-10
dev command
DTE
2-10
dimensions, chassis
Ethernet
ISDN BRI
LAN
dir command
2-9
B-5
1-11
B-5
2-11
documentation
3-21
3-24
network
2-9
conventions
2-10, 2-12
on CD-ROM
Token Ring
Cisco IOS software
on the Web
2-10
voice
3-21
organization
WAN
3-21
related
console port
xv
viii
xiv
xiv
viii
xiv
DTE and DCE devices
connecting to
connections
description
speed
3-2
distance limitations, serial signals
2-12
modem
serial
B-6
DTE connections
3-22, 3-23
2-10
2-10
3-23
2-8
E
B-9
console terminal connections
context command
3-23
B-6
2-2
electrostatic discharge damage
cooling recommendations
CSU/DSU connections
electrical safety guidelines
2-4
See ESD
2-13
EPROM-based memory
error messages
ESD
D
1-4
A-8 to A-12
2-2
Ethernet cable types
2-9
data rate
asynchronous serial
modem
2-12
F
3-24
setting for console terminal
DCE and DTE devices
DCE connections
C-2, C-4
2-10
2-10
flash memory
See CompactFlash memory
frame command
B-6
DC power connections
Cisco 3700 Series Routers Hardware Installation Guide
IN-2
OL-2180-08
Index
front panel LEDs
cable specifications
3-26, A-4, A-5
G
L
ground connection
LAN
2-13
Cisco 3725
3-9, 3-10
connections
Cisco 3745
3-10, 3-11
interface numbering
lug attachment
3-9, 3-11
3-20, 3-21
Cisco 3725
1-5
Cisco 3745
1-7
interface types
H
2-9, 2-10
LEDs
help command
front panel
B-5
high temperature, troubleshooting
humidity, specifications
rear panel
A-3
1-11, 1-12
3-26, A-4, A-5
A-6 to A-8
lightning safety
2-2
lost password, recovering
A-12
I
M
i command
B-6
meminfo command
installation
checklist
desktop
memory
2-5
3-2
rack-mounting
3-3 to 3-8
site requirements
tools required
B-5
1-4
modem connection
3-24, 3-25
mounting brackets
3-3, 3-4
2-3
2-7
N
interface numbering
LAN interfaces
netboot
B-4
Cisco 3725
1-5
network connections
Cisco 3745
1-7
network modules, installing
voice
2-9
1-3
nonvolatile random-access memory
Cisco 3725
1-6
Cisco 3745
1-8
See NVRAM
NVRAM
1-4
WAN interfaces
Cisco 3725
1-5
Cisco 3745
1-7
P
IOS software
packing list
See Cisco IOS software
IP telephony power modules
ISDN BRI
2-12, 2-13
2-6
password recovery
1-9, 1-10
port numbering
A-12
1-5 to 1-8
power
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
IN-3
Index
options
signaling standards, serial
1-9
requirements
site
2-3
specifications
configuration
1-11
power supply
LEDs
2-4
environment
connections
2-11
log
3-11 to 3-20
2-4
2-6
requirements
A-5, A-6
power-up procedure
slot numbering
3-27
processor specifications
2-3
1-5 to 1-8
software image recovery procedure
1-4
B-8
specifications
R
rack-mounting the chassis
racks, equipment
1-11
Cisco 3745
1-11
memory
3-3 to 3-8
system
recovering
Cisco IOS software images
related documents
reload command
reset command
B-8
2-11, 2-12
1-11
stack command
B-6
static electricity damage
A-12
regulatory compliance
1-4
serial ports
A-6 to A-8
lost password
1-4
processor
2-4
rear panel LEDs
Cisco 3725
1-12
2-2
switched-56-kbps connections
2-13
synchronous dynamic random-access memory
xv
See SDRAM
B-2, C-3
SYS/RPS LED in Cisco 3725
B-6
A-5
rollover cable
3-25
SYS LED in Cisco 3745
ROM monitor
B-1 to B-9
SYS PS1 LED in Cisco 3745
A-6
SYS PS2 LED in Cisco 3745
A-6
commands
B-2 to B-7
sysret command
A-5
B-6
S
T
safety
guidelines
telephone jacks, safety during installation
2-1, 2-2
warnings, translations
ix
SDM for configuration
SDRAM
temperature, operating
TFTP server
1-4
serial connections
signals
3-29
telephony power modules
1-11, 1-12
2-10
tools required for installation
2-11
speeds and distances
2-12
setup command facility
3-29
show hardware command
show version command
1-9, 1-10
B-4
Token Ring connections
2-10
B-5
B-5, C-3
2-2
2-7
troubleshooting
cables
A-3
connections
A-3
cooling system
A-2
error messages
A-8 to A-12
Cisco 3700 Series Routers Hardware Installation Guide
IN-4
OL-2180-08
Index
front panel LEDs
A-4, A-5
high temperature
A-3
modules
A-3
power system
A-2
rear panel LEDs
A-6 to A-8
V
ventilation
2-4
voice
connections
3-21
interface numbering
Cisco 3725
1-6
Cisco 3745
1-8
W
WAN
connections
3-21
interface numbering
Cisco 3725
1-5
Cisco 3745
1-7
Warning symbol, meaning
ix
wiring
power supplies
telephone
3-11 to 3-20
2-2
X
xmodem command
B-8
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
IN-5
Index
Cisco 3700 Series Routers Hardware Installation Guide
IN-6
OL-2180-08