Cisco 1721 User Manual

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Cisco 1721 Router Hardware Installation Guide

Corporate Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 526-4100

Customer Order Number: DOC-7813834= Text Part Number: 78-13834-02

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.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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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. (0502R)

Cisco 1721 Router Hardware Installation Guide

Preface xi

Audience and Scope xi Organization xi Related Documentation xii Conventions xiii

Notes, Cautions, and Warnings xiii Commands xvi

Obtaining Documentation xvi

Cisco.com xvii Documentation DVD xvii Ordering Documentation xvii

Documentation Feedback xviii

CHAPTER

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Cisco Product Security Overview xviii

Reporting Security Problems in Cisco Products xix

Obtaining Technical Assistance xix

Cisco Technical Support Website xx Submitting a Service Request xx Definitions of Service Request Severity xxi

Obtaining Additional Publications and Information xxii

1 Cisco 1721 Router Overview 1-1

Key Features 1-2 Back Panel Ports and LEDs 1-4 Front Panel LEDs 1-5

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Contents

Router Memory 1-7

Types of Memory 1-8

Amounts of Memory 1-8 Unpacking the Router 1-9 Additional Required Equipment 1-9

CHAPTER

2 Installation 2-1

Before Installing the Router 2-1 Connecting the Router to Your Local Network 2-2 Installing WICs 2-4

Safety Information 2-4

WIC Installation 2-5 Connecting Power to the Router 2-8 Verifying Your Installation 2-9 Optional Installation Steps 2-10

Connecting a PC 2-10

Connecting a Modem 2-12

Wall-Mounting 2-13

Stacking the Router 2-14

Unstacking the Router 2-17

3 Troubleshooting 3-1

Contacting Your Cisco Reseller 3-1 Recovering a Lost Password 3-2

Determining the Configuration Register Value 3-2

Resetting the Router 3-4

Resetting the Password 3-6

Resetting the Configuration Register Value 3-6

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Problem Solving 3-7

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OK LED Diagnostics 3-7

Troubleshooting WICs and Cables 3-8

Troubleshooting the Power System 3-10

Troubleshooting ISDN 3-11

Contents

APPENDIX

A Technical Specifications A-1

B Cabling Specifications B-1

Ethernet Cables B-1 Ethernet Network Cabling Guidelines B-2 Console Cable and Adapter B-3

C Installing and Upgrading Memory and Virtual Private Network Modules C-1

Safety Warnings C-1 Opening the Chassis C-2 Locating Modules C-4 Installing a DIMM C-5 Installing a VPN Module C-6 Closing the Chassis C-9

D Ordering and Configuring an ISDN Line D-1

ISDN BRI Line Configuration Requirements D-1

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ISDN BRI Switch Types D-2 ISDN BRI Provisioning by Switch Type D-3 Defining ISDN Service Profile Identifiers D-5 ISDN Configuration Options D-6

Snapshot Routing D-6

Dial-on-Demand Routing D-7

Cisco 1721 Router Hardware Installation Guide

NDEX

Contents

Bandwidth on Demand and Dial Backup D-7

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Preface

This section discusses the intended audience, scope, and organization of the Cisco 1721 Router Hardware Installation Guide and defines the conventions used to convey instructions and information.

Audience and Scope

This guide is for users who have some experience installing and maintaining networking hardware. Cisco 1721 router users should be familiar with the terminology and concepts of local Ethernet and wide-area networking.

This guide describes the functional and physical features of the Cisco 1721 router and provides installation procedures, troubleshooting information, technical specifications, and cable and connector guidelines and specifications.

Organization

This guide is organized as follows:

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• Chapter 1, “Cisco 1721 Router Overview,” describes the router features,

LEDs, and connectors.

• Chapter 2, “Installation,” describes how to install the router by connecting

cables and power, and tells how to install WAN interface cards (WICs).

• Chapter 3, “Troubleshooting,” describes some problems that you might have

with the router and how to solve these problems.

Cisco 1721 Router Hardware Installation Guide

Conventions

This guide uses the following conventions for information and instructions.

Notes, Cautions, and Warnings

Notes, cautions, and warnings use the following conventions and symbols:

Note Means reader take note. Notes contain helpful suggestions or references to

materials not contained in this manual.

Caution This caution symbol means reader be careful. In this situation, you might do

something that could result in equipment damage or loss of data.

Conventions

Warning

Waarschuwing

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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. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

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 standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.

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Conventions

Preface

Varoitus

Attention

Warnung

Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).

Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d’avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.

Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.

xiv

Avvertenza

Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.

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Preface

Conventions

Advarsel

Aviso

¡Advertencia!

Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.

Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.

Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.

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Varning!

Denna varningssymbol 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 vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.

Cisco 1721 Router Hardware Installation Guide

Obtaining Documentation

Commands

Preface

Table 1 describes the syntax used with the commands in this document.

Table 1 Command Syntax Guide

Convention Description

boldface Commands and keywords.

italic Command input that is supplied by you.

[ ] Keywords or arguments that appear within square

brackets are optional.

{x | x | x} A choice of keywords (represented by x) appears in

braces separated by vertical bars. You must select one.

^ or Ctrl Represent the key labeled Control. For example, when

you read ^D or Ctrl-D, you should hold down the Control key while you press the D key.

screen font

boldface screen font

< > Nonprinting characters, such as passwords, appear in

[ ] Default responses to system prompts appear in square

Examples of information displayed on the screen.

Examples of information that you must enter.

angled brackets.

brackets.

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.

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Preface

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

Documentation DVD

Cisco documentation and additional literature are available in a Documentation DVD package, which may have shipped with your product. The Documentation DVD is updated regularly and may be more current than printed documentation. The Documentation DVD package is available as a single unit.

Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.

Obtaining Documentation

Cisco Ordering tool:

http://www.cisco.com/en/US/partner/ordering/

Cisco Marketplace:

http://www.cisco.com/go/marketplace/

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/

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Documentation Feedback

• 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.

Preface

Cisco Product Security Overview

Cisco provides a free online Security Vulnerability Policy portal at this URL:

http://www.cisco.com/en/US/products/products_security_vulnerability_policy.ht ml

From this site, you can perform these tasks:

• Report security vulnerabilities in Cisco products.

• Obtain assistance with security incidents that involve Cisco products.

• Register to receive security information from Cisco.

A current list of security advisories and notices for Cisco products is available at this URL:

http://www.cisco.com/go/psirt

If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:

http://www.cisco.com/en/US/products/products_psirt_rss_feed.html

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Preface

Reporting Security Problems in Cisco Products

Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you might have identified a vulnerability in a Cisco product, contact PSIRT:

• Emergencies— security-alert@cisco.com

• Nonemergencies— psirt@cisco.com

Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product to

encrypt any sensitive information that you send to Cisco. PSIRT can work from encrypted information that is compatible with PGP versions 2.x through 8.x.

Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one that has the most recent creation date in this public key server list:

http://pgp.mit.edu:11371/pks/lookup?search=psirt%40cisco.com&op=index&ex act=on

Obtaining Technical Assistance

In an emergency, you can also reach PSIRT by telephone:

• 1 877 228-7302

• 1 408 525-6532

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.

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Obtaining Technical Assistance

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 Too l s &

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.

Preface

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

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Preface

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

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.

Obtaining Technical Assistance

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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.

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Preface

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/

• 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

• Pack et 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:

xxii

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

• 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

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Preface

Obtaining Additional Publications and Information

• 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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Obtaining Additional Publications and Information

Preface

xxiv

Cisco 1721 Router Hardware Installation Guide

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CHA P T E R

Cisco 1721 Router Overview

This chapter introduces the Cisco 1721 router, also referred to in this guide as the router, and covers the following topics:

• Key Features

• Back Panel Ports and LEDs

• Front Panel LEDs

• Router Memory

• Unpacking the Router

• Additional Required Equipment

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Cisco 1721 Router Hardware Installation Guide

1-1

Key Features

The Cisco 1721 router (see Figure 1-1) is a small, modular desktop router that links small- to medium-size remote Ethernet and Fast Ethernet LANs over one to four WAN connections to regional and central offices. Table 1-1 lists the key features of the router.

Figure 1-1 Cisco 1721 Router

Chapter 1 Cisco 1721 Router Overview

1-2

PWR

IC0

ACT/CH0

ETH

ACT

ACT/CH1

COL

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Cisco

1700

SERIES

ROUTER

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Chapter 1 Cisco 1721 Router Overview

Key Features

Table 1-1 Key Features

Feature Description

One Fast Ethernet (10/100BASE-TX) port

Two Cisco WAN interface card (WIC) slots

Console port Supports router configuration and management with a

Auxiliary port Supports modem connection to the router, which can be

VPN hardware-assisted 3DES encryption module

SNMP support Router can be managed over a network using Simple Network

AutoInstall support Configuration files can be easily downloaded to the router over

Kensington security slot Router can be secured to a desktop or other surface using

Cisco ConfigMaker support You can set up networks that include the Cisco 1721 router

Support for Cisco IOS software features

• Operates in full- or half-duplex mode (with manual

override available).

• Supports autosensing for 10- or 100-Mbps operation.

• Supports IEEE 802.1Q VLAN encapsulation.

• Supports a combination of any two of the following WICs:

ISDN BRI, 56-kbps DSU/CSU, FT1/T1 DSU/CSU, high-speed serial, dual-serial, ADSL, G.SHDSL, and Ethernet.

• The WAN interface configuration can be changed as your

network requirements change.

directly-connected terminal or PC. Supports up to 115.2 kbps.

configured and managed from a remote location. Supports up to

115.2 kbps.

Provides IPSEC DES and 3DES hardware encryption.

Management Protocol (SNMP).

a WAN connection.

Kensington lockdown equipment.

using the Cisco ConfigMaker application, a wizards-based software tool that helps you easily configure and address Cisco routers, access servers, hubs, switches, and networks.

Supports IP, IPX, AppleTalk, IBM, Open Shortest Path First (OSPF), NetWare Link Services Protocol (NLSP), Resource Reservation Protocol (RSVP), encryption, network address translation, and the Cisco IOS Firewall Feature Set.

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1-3

Back Panel Ports and LEDs

This section describes the router back panel ports and LEDs, which are shown in

Figure 1-2 and described in Tab le 1- 2 and Tab l e 1- 3 .

Figure 1-2 Back Panel Ports and LEDs

Kensington-compatible

locking socket

WIC 0 slot WIC 1 slot

Console port

Chapter 1 Cisco 1721 Router Overview

Power switch

CONSOLE

AUX

Auxiliary port

Model Cisco 1721

SEE MANUAL BEFORE INSTALLATION

WIC 0

OK LED

ALLPRD

56K

FDX LINK100WIC 0 OK WIC 1 OKMOD OK

FDX/100/

LINK LEDs

10/100 ETHERNET

10/100-Mbps Ethernet port

DSU

Table 1-2 Back Panel Connectors

Connector/Slot Label/Color Description

Ethernet port 10/100

ETHERNET (yellow)

Connects the router to the local Ethernet network through this port. This port autosenses the speed (10 Mbps or 100 Mbps) and duplex mode (full- or half-) of the device to which it is connected and then operates at the same speed and in the same duplex mode.

Auxiliary port AUX

(black)

Console port CONSOLE

(blue)

Connects to a modem for remote configuration with Cisco IOS software.

Connects to a terminal or PC for local configuration using Cisco IOS software.

MOD OK

LED

WIC 1 OK

+5, +12, -12 VDC

65524

Powe r socket

LED

1-4

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Chapter 1 Cisco 1721 Router Overview

Front Panel LEDs

Table 1-2 Back Panel Connectors (continued)

Connector/Slot Label/Color Description

WIC slot 0 (WIC0)

WIC slot 1 (WIC1)

Table 1-3 Back Panel LEDs

LED Label Color Description

WIC0 OK Green On when a WIC is correctly inserted in the card slot.

FDX Green On solid—Ethernet port is operating in full-duplex mode.

100 Green On solid—Ethernet port is operating at 100 Mbps.

No label Supports one Cisco WIC. For detailed information, refer

to the Cisco WAN Interface Cards Hardware Installation Guide, which comes with every card.

No label Supports one Cisco WIC. For detailed information, refer

to the Cisco WAN Interface Cards Hardware Installation Guide, which comes with every card.

Use the back panel LEDs during router installation to confirm that you have correctly connected all the cables to the router.

Off—Ethernet port is operating in half-duplex mode.

Off—Ethernet port is operating at 10 Mbps.

LINK Green On when the Ethernet link is up.

MOD OK Green On when the VPN hardware encryption module is installed and

recognized by the IOS.

WIC1 OK Green On when a WIC is correctly inserted in the card slot.

Front Panel LEDs

Use the router front panel LEDs to determine network activity and status on the Ethernet port and on the WIC ports. The front panel LEDs are illustrated in

Figure 1-3 and described in Tab le 1- 4.

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1-5

Front Panel LEDs

Figure 1-3 Front Panel LEDs

Chapter 1 Cisco 1721 Router Overview

PWR

WIC0

ACT/CH0

ACT/CH1

WIC1

ACT/CH0

ACT/CH1

ETH

ACT

COL

65537

Table 1-4 Front Panel LEDs

LED Label Color Description

PWR Green On means that DC power is being supplied to the router.

OK Green On means that the router has successfully booted up and the software is

functional. This LED blinks during the power-on self-test (POST).

See the section “OK LED Diagnostics” in Chapter 3,

“Troubleshooting,” for information on how to use this LED for router

diagnostics.

WIC0

ACT/CH0 Green Serial and DSU/CSU cards—Blinks when data is being sent to or

received from the port on the card in the WIC0 slot.

ISDN cards—On solid when the first ISDN B channel is up for the card in the WIC0 slot.

2-port serial cards—Blinks when data is being sent to or received from the first port on the 2-port card in the WIC0 slot.

ACT/CH1 Green Serial and CSU/DSU cards—Remains off.

ISDN cards—On solid when the second ISDN B channel is up for the card in the WIC0 slot

2-port serial cards—Blinks when data is being sent to or received from the second port on the 2-port card in the WIC0 slot.

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Chapter 1 Cisco 1721 Router Overview

Router Memory

Table 1-4 Front Panel LEDs (continued)

LED Label Color Description

WIC1

ACT/CH0 Green Serial and DSU/CSU cards—Blinks when data is being sent to or

received from the port on the card in the WIC1 slot.

ISDN cards—On solid when the first ISDN B channel is up for the card in the WIC1 slot.

2-port serial cards—Blinks when data is being sent to or received from the first port on the 2-port card in the WIC1 slot.

ACT/CH1 Green Serial and DSU/CSU cards—Remains off.

ISDN cards—On solid when the second ISDN B channel is up for the card in the WIC1 slot.

2-port serial cards—Blinks when data is being sent to or received from the second port on the 2-port card in the WIC1 slot.

ETH

ACT Green Blinks when there is network activity on the Ethernet port.

COL Yellow Blinks when there are packet collisions on the local Ethernet network.

Router Memory

This section describes the types of memory stored in the router and how to find out how much of each type of memory is stored in the router.

For instruction on how to upgrade memory in the router, see Appendix C,

“Installing and Upgrading Memory and Virtual Private Network Modules.”

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1-7

Router Memory

Types of Memory

The Cisco 1721 router has the following types of memory:

• Dynamic random-access memory (DRAM)—This is the main storage

• Nonvolatile random-access memory (NVRAM)—This type of memory

• Flash memory—This special kind of erasable, programmable memory

Chapter 1 Cisco 1721 Router Overview

memory for the router. DRAM is also called working storage. It contains the dynamic configuration information. The Cisco 1721 router stores a working copy of the Cisco IOS software, dynamic configuration information, and routing table information in DRAM.

contains a backup copy of your configuration. If the power is lost or the router is turned off, this backup copy enables the router to return to operation without reconfiguration.

contains a copy of the Cisco IOS software. The Flash memory structure can store multiple copies of the Cisco IOS software. You can load a new level of the operating system in every router in your network and then, when convenient, upgrade the whole network to the new level.

Amounts of Memory

Use the show version command to view the amount of DRAM, NVRAM, and Flash memory stored in your router. The following example of the show version command output displays the amount of memory in this router.

1721# show version Cisco Internetwork Operating System Software IOS (tm) C1700 Software (C1700-K9SY-M), Version 12.2(4)YA EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) TAC Support: http://www.cisco.com/tac Copyright (c) 1986-2002 by cisco Systems, Inc. Compiled Mon 14-Jan-02 16:34 by ramesh Image text-base: 0x80008108, data-base: 0x80BC77E8

ROM: System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)

1721 uptime is 4 days, 23 hours, 54 minutes System returned to ROM by reload Running default software

cisco 1721 (MPC860P) processor (revision 0x101) with 36864K/12288K bytes of memory.

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Chapter 1 Cisco 1721 Router Overview

Processor board ID VEN0539000D (3033334544), with hardware revision 0000 MPC860P processor: part number 5, mask 2 Bridging software. X.25 software, Version 3.0.0. 1 Ethernet/IEEE 802.3 interface(s) 1 FastEthernet/IEEE 802.3 interface(s) 2 Serial network interface(s) 1 Virtual Private Network (VPN) Modules(s) 32K bytes of non-volatile configuration memory. 16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x0

Unpacking the Router

Table 1-5 lists the items that come with your router. All these items are in the accessory kit that is inside the box that your router came in.

Table 1-5 Router Box Contents

Unpacking the Router

Power cord (black)

•

• Power supply

• DB-25 to DB-9 adapter

• Console cable, RJ-45 to DB-9 (light blue)

• Product documentation

Additional Required Equipment

Depending on your local network and on which Cisco WICs you install in your router, you will require other items, listed in Table 1-6, to complete your router installation.

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1-9

Chapter 1 Cisco 1721 Router Overview

Additional Required Equipment

Table 1-6 Additional Required Equipment

Equipment When You Use It

Ethernet hub A hub connects pieces of network equipment (including the

Cisco 1721 router) to create a network. You can use a 10-, 100-, or 10/100-Mbps hub with the Cisco 1721 router.

Ethernet switch A switch connects pieces of network equipment (including the

Cisco 1721 router) to create a network. You can use a 10-, 100-, or 10/100-Mbps switch with the Cisco 1721 router.

Phillips screwdriver Although the WICs use thumbscrews, you might need a Phillips

screwdriver to loosen the WIC slot cover.

Cisco WIC In order to make a WAN connection, the Cisco 1721 router must

have a supported WIC installed. The router supports up to two cards. You can order the cards when you order the router, and they will be installed for you. Or, you can order the cards separately, after you receive the router, and then install them yourself.

Straight-through RJ-45-to-RJ-45 cable

Serial cable This cable connects a serial card to serial services. You must order

NT-1 Some ISDN service providers require a Network Termination 1

Asynchronous modem Connect a modem to the AUX port on the router when you want to

This cable connects the router to the Ethernet LAN and connects the WICs to various WAN services, including ISDN, T1/FT1, and 56-kbps services. You will need one cable for each connection that requires this cable type.

this cable from Cisco. For detailed information about serial cable types, refer to the Cisco WAN Interface Cards Hardware Installation Guide, which comes with every card.

(NT-1) device to connect an ISDN S/T port to the ISDN line.

configure the router from a remote location.

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Installation

This chapter provides procedures for installing the Cisco 1721 router and includes the following sections:

• Before Installing the Router

• Connecting the Router to Your Local Network

• Installing WICs

• Connecting Power to the Router

• Verifying Your Installation

• Optional Installation Steps

Before Installing the Router

CHA P T E R

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The Cisco 1721 router is shipped ready for desktop mounting. Before making the power and network connections, simply set the router on a desktop, shelf, or other flat surface.

Note For instructions on wall-mounting the router, see the “Wall-Mounting” section

later in this chapter.

Be sure to read the safety information in the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with your router.

Cisco 1721 Router Hardware Installation Guide

2-1

Connecting the Router to Your Local Network

Chapter 2 Installation

Warning

Caution Do not place anything on top of the router that weighs more than 10 pounds

Read the installation instructions before you connect the system to its power source.

Do not work on the system or connect or disconnect cables during periods of lightning activity.

(4.5 kg). Excessive weight on top of the router could damage the chassis.

Connecting the Router to Your Local Network

The Cisco 1721 router is connected to your local Ethernet network through the yellow 10/100 Ethernet port. You must provide the following items for this connection:

• A straight-through, RJ-45-to-RJ-45, Ethernet cable

• A 10/100-Mbps Ethernet hub or switch

Warning

The ports labeled 10/100 ETHERNET and CONSOLE are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because BRI circuits are treated like telephone-network voltage, avoid connecting the SELV circuits to the telephone network voltage (TNV) circuits. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with the router.)

2-2

Caution Always connect the Ethernet cable to the yellow ports on the router. Do not

connect the cable to an ISDN S/T or U port (on a WIC) or to an NT-1 that is connected to a WIC. Accidentally connecting the cable to the wrong port can damage your router.

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Chapter 2 Installation

Step 1 Connect one end of the cable to the yellow Ethernet port (labeled

Connecting the Router to Your Local Network

Follow these steps to connect the router to the local network:

10/100 ETHERNET), as shown in Figure 2-1.

Figure 2-1 Connecting the Router to the Local Network

WIC0OK

I N

S T

L L

T I

O N

FDX

100

Ethernet port

56K

LINK

10/100 ETHERNET

10/100

NSOLE

AUX

MOD OK

WIC1OK

, +

, -1

Ethernet hub or switch

(10, 100, or 10/100 Mbps)

Model Cisco 1721

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Step 2

AUI

Straight-through

Ethernet cable

Connect the other end of the cable to a network port on the hub or switch.

Cisco 1721 Router Hardware Installation Guide

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2-3

Installing WICs

The Cisco 1721 router supports one or two Cisco WAN interface cards (WICs). Each card has one or two WAN ports. This section describes the general procedure for installing a card in the Cisco 1721 router.

Note For details on specific WICs, how to connect the card to the WAN line, and

how to configure the interface with Cisco IOS software, refer to the Cisco WAN Interface Cards Hardware Installation Guide that came with the card(s).

Safety Information

This section lists safety warnings that you should be aware of before installing WICs in the router.

Chapter 2 Installation

2-4

Warning

Cisco 1721 Router Hardware Installation Guide

Only trained and qualified personnel should be allowed to install or replace this equipment. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with the router.)

Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with the router.)

Do not work on the system or connect or disconnect cables during periods of lightning activity. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with the router.)

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Chapter 2 Installation

Caution Do not connect a WAN cable to the card until you have completed the

installation procedure.

WIC Installation

This section describes how to install WICs in the router.

Installing the Cards in Correct Sequence

The Cisco 1721 router discovers interfaces on WICs installed in the WIC0 slot before it discovers those installed in the WIC1 slot. This can affect your router configuration. This section describes how to ensure that your existing router configuration is not affected when you install WICs.

If you are installing a WIC in the router for the first time, install the card in the WIC0 slot to ensure that your software configuration will not be affected if you install a second card at a later time.

Installing WICs

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If you are installing a second WIC in a Cisco 1721 that has a card installed in the WIC1 slot, follow this general procedure to prevent having to reconfigure your router:

Caution Read the instructions in the following section, “Installing the Cards,” before

you install the cards.

Step 1 Remove the installed card from the WIC1 slot.

Step 2 Reinstall the card (removed in Step 1) in the WIC0 slot.

Step 3 Install the new card in the WIC1 slot.

Cisco 1721 Router Hardware Installation Guide

2-5

Installing WICs

Installing the Cards

Follow these steps to install the card in a Cisco 1721 router:

Step 1 Make sure that the power switch is set to the STANDBY position ( ) and that

the power cable is not connected to the power socket on the rear panel.

Caution Power must be removed from the system prior to installing or removing WICs

to avoid damaging them. When WICs are pushed into or pulled out of a router that is powered up, there is a very good chance that they could be damaged electrically and will no longer function.

Step 2 Loosen the thumbscrews on the WIC slot cover on the rear panel, as shown in

Figure 2-2, and then remove the slot cover. You should be able to loosen the

screws using your fingers; however, if the screws are very tight, you might need to use a Phillips screwdriver.

Figure 2-2 Removing the WIC Slot Cover

Chapter 2 Installation

Model Cisco 1721

WIC0OK

FDX

LINK100

10/100 ETHERNET

WAN interface card slot cover

Cisco 1721 Router Hardware Installation Guide

2-6

CONSOLE

AUX

MOD OK

WIC1OK

65526

+5, +12, -12 VDC

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Chapter 2 Installation

Step 3 Hold the WIC by the edges on either side of the card front panel, and line up the

card edges with the guides inside the card slot, as shown in Figure 2-3.

Figure 2-3 Inserting a WIC in the Router

Model Cisco 1721

E M

AL B

EFO

E INS

WIC0OK

LLA

TIO

56K

Guides

FDX

LINK100

10/100 ETHE

CONSOLE

AUX

MOD OK

Installing WICs

65527

WIC1OK

+5, +12, -12 VDC

WAN interface card

Step 4

Step 5 Tighten the screws.

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Insert the card in the slot and gently push it into the router until the front panel of the card is flush with the rear panel of the router.

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2-7

Connecting Power to the Router

Read the following warnings before connecting the router to power.

Chapter 2 Installation

Warning

The power supply is designed to work with TN power systems.

This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120VAC, 15AU.S. (240VAC, 16A international) is used on the phase conductors (all current-carrying conductors).

This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use.

Take the following steps to connect power to the router and to turn the router on:

Step 1 Connect the attached power-supply cord to the power socket (labeled +5, +12,

-12 VDC) on the router rear panel, as shown in Figure 2-4.

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Chapter 2 Installation

Figure 2-4 Connecting the Power Supply

Verifying Your Installation

Model Cisco 1721

SEE MANUAL BEFORE INSTALLATION

100

LIN

10/100 ETHERNET

SOLE

Power supply

Step 2

Connect one end of the separate power cord to the socket on the power supply.

Step 3 Connect the other end of the separate power cord to a power outlet.

Step 4 Press the router power switch to ON ( | ).

Step 5 Confirm that the router has power by checking that the PWR LED on the front

panel is on.

Verifying Your Installation

65530

+5, +12, -12 VDC

Power socket

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You can verify that you have correctly installed the router by checking the following LEDs:

• PWR (front panel)—On when power is being supplied to the router.

Cisco 1721 Router Hardware Installation Guide

2-9

Optional Installation Steps

• OK (front panel)—On when the router software is loaded and functional.

Blinking means that the router is performing a power-on self-test (POST).

• WIC0/WIC1 OK (back panel)—On when a WIC is correctly installed in the

corresponding WIC slot.

• ETH ACT (front panel)—Blinking when there is network traffic on the local

10/100 Ethernet LAN.

• WIC0ACT or WIC1 ACT (front panel)—Varies, depending on the WIC

installed. Refer to Ta b le 1- 4 in Chapter 1, “Cisco 1721 Router Overview.”

• LINK (back panel)—On when the router is correctly connected to the local

Ethernet LAN through the 10/100 ETHERNET port.

• MOD OK (back panel)—On when the VPN hardware encryption module is

installed and recognized by the IOS.

Optional Installation Steps

This section describes some installation steps that you might or might not use, depending on your site and on how you are configuring the router. This section describes the following procedures:

• Connecting a PC

Chapter 2 Installation

• Connecting a Modem

• Wall-Mounting

• Stacking the Router

• Unstacking the Router

Connecting a PC

If you want to configure the router by using the Cisco IOS command-line interface, you must connect the router console port to a terminal or PC. The cable and adapter required for this connection are included with the router.

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Chapter 2 Installation

To configure the router by using a PC, the PC must have some type of terminal emulation software installed. The software should be configured with the following parameters: 9600 baud, 8 data bits, no parity bits, 1 stop bit. Refer to the Cisco 1700 Router Software Configuration Guide that came with your router for detailed information about configuring the router using Cisco IOS software.

Follow these steps to connect the router to a terminal or PC:

Step 1 Connect the blue console cable to the blue console port on the back of the router,

as shown in Figure 2-5.

Figure 2-5 Connecting the Console Cable to the Router

Optional Installation Steps

Model Cisco 1721

SEE MANUAL BEFORE INSTALLATION

WIC0OK

Blue console cable

Step 2

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65528

6 K

FDX

100

LINK

10/100 ETHERNET

CONSOLE

AUX

MOD OK

WIC1OK

+5, +12, -12 VDC

Console port

To PC or terminal

Connect the DB-9 end of the console cable to the console port (also called the serial port) on your PC. If this adapter does not fit your PC console port, you must provide an adapter that fits.

Cisco 1721 Router Hardware Installation Guide

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Optional Installation Steps

Connecting a Modem

When a modem is connected to the auxiliary port, a remote user can dial into the router and configure it. You can use the blue console cable that came in the accessory kit.

Follow these steps to connect a modem to the router, using the console cable:

Step 1 Connect the RJ-45 end of the cable to the black AUX port on the back of the

router, as shown in Figure 2-6.

Figure 2-6 Connecting a Modem to the Router

Chapter 2 Installation

2-12

S E

Model Cisco 1721

A L

S T

DSU

L A

T IO

IC0OK

56K

LINK

10/100 ETHERNET

CONSOLE

AUX

FDX

100

AUX port (RJ-45)

Console cable

Step 2

Connect the DB-9 end of the cable to the DB-9 end of the DB-9-to-DB-25 adapter.

Cisco 1721 Router Hardware Installation Guide

MOD OK

WIC1OK

+5, +12, -12 VDC

DB-9-to-DB-25 adapter

65529

Modem

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Chapter 2 Installation

Step 3 Connect the DB-25 end of the adapter to the modem.

Wall-Mounting

The Cisco 1721 router can be wall-mounted using two number six, 3/4-inch screws and the molded mounting brackets on the bottom of the hub, as shown in

Figure 2-7. You must provide the screws. We recommend using pan-head or

round-head screws.

Figure 2-7 Wall-Mount Brackets—Bottom of Router

Optional Installation Steps

Front panel of router

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Mounting

bracket

Bottom

of router

Mounting

bracket

3.75"

(9.52 cm)

Mounting bracket

12016

To mount the router on a wall or other surface:

Step 1 Install the two screws 3.75 inches (9.52 centimeters) horizontally apart on a wall

or other vertical surface.

The screws should protrude 0.25 inch (0.64 centimeter) from the surface of the wall.

Cisco 1721 Router Hardware Installation Guide

2-13

Optional Installation Steps

Step 2 Hang the router on the screws with either the left side or right side mounting

brackets so that

• The LEDs are visible to the user—Because the LEDs indicate the router

operating status, they need to be easily visible.

• The power supply does not hang from its cable—If the power supply is not

supported, it might disconnect from the cable that connects it to the router.

Caution If you install the screws in drywall, use hollow wall anchors (1/8 inch

by 5/16 inch) to secure the screws. If the screws are not properly anchored, the strain of the cables connected to the router rear-panel connectors could pull the router from the wall.

Stacking the Router

You can stack one Cisco 1721 router in a four-device stack, along with other Cisco products designed to be stacked with the router. You can stack each device directly on top of another device.

Chapter 2 Installation

2-14

Note The Cisco 1721 router is not shipped with the stacking equipment described

in this section; however, the equipment is included with all other Cisco products that are designed to be stacked.

Each Cisco product designed to be stacked with the router comes with a stacking clip and a fastener for keeping the multiple devices together in a stack. Before you stack the devices, assemble the clip and fastener as shown in Figure 2-8.

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Chapter 2 Installation

Figure 2-8 Assembling Stacking Clip and Fastener

Optional Installation Steps

Push plastic fastener

through small hole

at the end of the

stacking clip.

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H11542

After assembling the clip and fastener, follow these steps to to stack the router with another device:

Step 1 Place the clip on top of the lower device, as shown in Figure 2-9. Slide the clip

forward so that the front tabs slide into the vent slots. Make sure that the rear hooks fit over the edge of the lower device.

Cisco 1721 Router Hardware Installation Guide

2-15

Optional Installation Steps

Figure 2-9 Stacking the Router

hooks

Rear

odel

Cisco 1721

Front

tabs

S E

M A

U A

L B

O R

IN S

L L

A T I

O N

WIC0OK

FDX

Back panel of

U 5 6

100

LINK

10/100 ETHERNET

SPEED

100BaseTX

LED

10BaseT

SOLID BLINK

lower hub

Chapter 2 Installation

Bottom of router

CONSOLE

AUX

MOD OK

WIC1OK

+5, +12, -12 VDC

Plastic

fastener

65531

7X 8X

MDI MDI-X

Rear

hooks

2-16

Step 2

Position the router onto the clips so that the rear hooks fit over the edge of the router.

Step 3 Snap the router to the clip by pushing it down. Make sure that the plastic fastener

fits into the bottom of the router.

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Chapter 2 Installation

Unstacking the Router

Follow these steps to unstack the router from another device:

Step 1 Press up on the tab over the center of the lower device to release the clip from the

vent, as shown in Figure 2-10.

Figure 2-10 Unstacking the Router

E M

Model Cisco 1721

A L

E F

S T

DSU

IC0OK

56K

FDX

LINK100

0/1

10/100 ETHERNET

SPEED

100BaseTX

10BaseT

SOLID BLINK

Optional Installation Steps

NSO

AUX

LED

5X 6X 7X 8X

MOD OK

WIC1OK

MDI MDI-X

, +

, -1

65532

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Step 2

Slide the clip and router toward you.

Step 3 Use both hands to lift the router and the stacking clip off the lower device.

Afterward, remove the clip from the bottom of the router.

Cisco 1721 Router Hardware Installation Guide

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Optional Installation Steps

Chapter 2 Installation

2-18

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Troubleshooting

Use the information in this chapter to help isolate problems you might encounter with the Cisco 1721 router or to rule out the router as the source of the problem.

This appendix contains the following sections:

• Contacting Your Cisco Reseller

• Recovering a Lost Password

• Problem Solving

Contacting Your Cisco Reseller

If you cannot locate the source of a problem, contact your local reseller for advice. Before you call, you should have the following information ready:

CHA P T E R

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• Chassis type and serial number

• Maintenance agreement or warranty information

• Type and version number of the Cisco IOS installed on your router

• Date you received the router

• Brief description of the problem

• Brief description of the steps you have taken to isolate the problem

• Output from the show tech-support command

Cisco 1721 Router Hardware Installation Guide

3-1

Recovering a Lost Password

This section describes how to recover a lost enable password and how to enter a new enable secret password.

Password recovery consists of the following major processes:

• Determining the Configuration Register Value

With this process, you determine the configuration of the router, so that you may restore the configuration after the password is recovered.

• Resetting the Router

With this process, you reconfigure the router to its intial startup configuration. You then display the enable password, if one is used.

• Resetting the Password

If you are using an enable secret password, you enter a new password with this process. You then restore the router to its prior configuration.

• Resetting the Configuration Register Value

If you are using an enable password, you use this process to restore the router to its prior configuration.

Chapter 3 Troubleshooting

Note See the “Hot Tips” section on Cisco.com for additional information on

replacing enable secret passwords.

Determining the Configuration Register Value

Follow these steps to determine the configuration register value:

Step 1 Connect an ASCII terminal or a PC running a terminal-emulation program to the

console port on the router. See the “Connecting a PC” section in Chapter 2, “Installation.”

Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, 1 stop bit

and no flow control.

Step 3 Reboot the router by pressing the power switch to the off ( 0 ) position and then

to the on ( | ) position.

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Chapter 3 Troubleshooting

Step 4 At the user EXEC prompt (Router>), enter the show version command to

display the existing configuration register value (shown at the end of this example output):

Router> show version

Cisco Internetwork Operating System Software IOS (tm) C1700 Software (C1700-K9SY-M), Version 12.2(4)YA EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) TAC Support: http://www.cisco.com/tac Copyright (c) 1986-2002 by cisco Systems, Inc. Compiled Mon 14-Jan-02 16:34 by ramesh Image text-base: 0x80008108, data-base: 0x80BC77E8

ROM: System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)

1721 uptime is 4 days, 23 hours, 54 minutes System returned to ROM by reload Running default software

cisco 1721 (MPC860P) processor (revision 0x101) with 36864K/12288K bytes of memory. Processor board ID VEN0539000D (3033334544), with hardware revision 0000 MPC860P processor: part number 5, mask 2 Bridging software. X.25 software, Version 3.0.0. 1 Ethernet/IEEE 802.3 interface(s) 1 FastEthernet/IEEE 802.3 interface(s) 2 Serial network interface(s) 1 Virtual Private Network (VPN) Modules(s) 32K bytes of non-volatile configuration memory. 16384K bytes of processor board System flash (Read/Write)

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Configuration register is 0x0

Step 5 Record the setting of the configuration register. It is usually 0x0.

Step 6 Record the break setting, as given by bit 8 of the configuration register.

• Break enabled—Bit 8 is set to 0.

• Break disabled (default setting)—Bit 8 is set to 1.

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Recovering a Lost Password

Resetting the Router

Follow these steps to reset the router:

Step 1 Do one of the following:

• If break is enabled, go to Step 2.

• If break is disabled, turn off the router, wait 5 seconds, and turn it on again.

Within 60 seconds, press the Break key. The terminal displays the ROM monitor prompt. Go to Step 3.

Note Some terminal keyboards have a key labeled Break. If your keyboard

does not have a Break key, refer to the documentation that came with the terminal for instructions on how to send a break. To send a break in Windows HyperTerminal, enter Ctrl-Break.

Step 2 Send a break. The terminal displays the following prompt:

rommon 2>

Chapter 3 Troubleshooting

3-4

Step 3 Enter confreg 0x142 to reset the configuration register:

rommon 2> confreg 0x142

Step 4 Initialize the router by entering the reset command:

rommon 2> reset

The router resets, and the configuration register is set to 0x142. The router boots the system image in Flash memory and displays the following:

--- System Configuration Dialog ---

Step 5 Enter no in response to the prompts until the following message is displayed:

Press RETURN to get started!

Step 6 Press Return. The following prompt appears:

Router>

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Chapter 3 Troubleshooting

Step 7 Enter the enable command to enter privileged EXEC mode. Configuration

changes can be made only in this mode.

Router> enable

The prompt changes to the privileged EXEC prompt:

Router#

Step 8 Enter the show startup-config command to display an enable password in the

configuration file:

Router# show startup-config

If you are using an enable password, it will appear in the startup configuration. Write down the password and keep the record secure.

If you are using a secret enable password, there will be no enable password in the startup configuration.

Step 9 Enter the copy startup-config running-config command to return to your startup

configuration:

Router# copy startup-config running-config

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If you are recovering an enable password, skip the next section, “Resetting the

Password,” and complete the password recovery process by performing the steps

in the “Resetting the Configuration Register Value” section.

If you are resetting an enable secret password, you will not see it displayed in the show startup-config command output. Complete the password recovery process by performing the steps in the “Resetting the Password” section, which follows.

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Recovering a Lost Password

Resetting the Password

Follow these steps to reset an enable secret password and restore the configuration of the router:

Step 1 Enter the configure terminal command to enter configuration mode:

Router# configure terminal

Step 2 Enter the enable secret command to reset the enable secret password in the

router:

Router(config)# enable secret <gobbledegook>

Step 3 Enter the config-register command and the original configuration register value

that you recorded in Step 5 in the “Determining the Configuration Register Value”

section on page 3-2.

Step 4 Press Ctrl-Z to exit configuration mode.

Router(config)# Ctrl-Z

Step 5 Save your configuration changes:

Router# copy running-config startup-config

Chapter 3 Troubleshooting

Step 6 Reboot the router, and enter the enable secret password.

Resetting the Configuration Register Value

Follow these steps to restore the configuration of the router after you have recovered an enable password:

Step 1 Enter the configure terminal command to enter configuration mode:

Router# configure terminal

Step 2 Enter the config-register command and the original configuration register value

that you recorded in Step 5 in the “Determining the Configuration Register Value”

section on page 3-2.

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Chapter 3 Troubleshooting

Step 3 Press Ctrl-Z to exit configuration mode:

Router(config)# Ctrl-Z

Step 4 Reboot the router, and enter the recovered enable password.

Problem Solving

The key to problem solving is to isolate the problem to a specific subsystem by comparing what the router is doing to what it should be doing.

In problem solving, consider the following subsystems of the router:

• WICs—Refer to the LEDs on the cards and the LEDs on the router front panel

to help identify a failure. For more information on WICs, refer to the Cisco WAN Interface Cards Hardware Installation Guide, which comes with each card.

• Cables—Check all the external cables that connect the router to the network.

Problem Solving

• Power system—Check the external power source, power cable, router power

supply, and circuit breaker. Check for inadequate ventilation or air circulation that might cause overheating.

• ISDN configuration—Consider ISDN-specific hardware and software

configurations (ISDN BRI WICs only).

OK LED Diagnostics

Use the front-panel OK LED to determine any problems with the router. When the router first boots up, it performs a power-on self-test (POST). If the router detects a problem during the POST, the OK LED blinks in different patterns (described in Table 3-1), depending on the problem. A pattern consists of a specific number of blinks that is repeated until the router is turned off. If the router experiences any of these problems, contact your Cisco reseller.

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Problem Solving

Table 3-1 OK LED Blinking Patterns

Number of Blinks Meaning

2 The 860P dual-port random-access memory (DPRAM) has

failed.

3 The parameter RAM area of the 860P DPRAM has failed.

4 The 860P system protection control register has a write

failure.

5 The router cannot detect the dynamic random-access

memory (DRAM).

6 The user programmable machine has a write failure.

9 The router DRAM has failed.

Troubleshooting WICs and Cables

Use the show diag command to help determine problems with a card. Table 3-2 lists problems that could occur with WAN interface cards (WICs) and the possible causes of these problems.

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Chapter 3 Troubleshooting

Table 3-2 Troubleshooting WICs

Symptom Possible Cause(s)

Router does not recognize WIC.

• Confirm that the Cisco IOS software version installed in the router

supports the WIC. The Cisco WAN Interface Cards Hardware Installation Guide lists the software requirements for each card.

• Make sure that the WIC is correctly installed in the router. See the

“Installing WICs” section in the “Installation” chapter of this guide.

• Use the show diag command to display information about the card:

Router# show diag Slot 0: C1721 1FE Mainboard port adapter, 4 ports Port adapter is analyzed Port adapter insertion time unknown Hardware revision 0.0 Board revision UNKNOWN Serial number 1314672220 Part number 00-0000-00 Test history 0x0 RMA number 00-00-00 EEPROM format version 1 EEPROM contents (hex): 0x20: 01 B2 00 00 4E 5C 4E 5C 00 00 00 00 00 00 00 00 0x30: 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00

WIC Slot 0: Serial 1T WAN daughter card Hardware revision 1.1 Board revision E0 Serial number 7131279 Part number 73-1775-02 Test history 0x0 RMA number 00-00-00 Connector type Wan Module EEPROM format version 1 EEPROM contents (hex): 0x20: 01 02 01 01 00 6C D0 8F 49 06 EF 02 00 00 00 00 0x30: 70 00 00 00 98 01 23 01 FF FF FF FF FF FF FF FF

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Problem Solving

Table 3-2 Troubleshooting WICs (continued)

Symptom Possible Cause(s)

Router recognizes the WIC(s), but the card port(s) do not initialize.

Router does not boot properly, or router

• Make sure that the WIC is correctly installed in the router. See the

“Installing WICs” section in the “Installation” chapter of this guide.

• Check the external cable connections to make sure they are secure.

Make sure that the WIC is correctly installed in the router. See the

“Installing WICs” section in the “Installation” chapter of this guide.

continuously or intermittently reboots.

Router boots, but the console screen is frozen.

Router powers on and boots only when a particular WIC is removed from the router.

• Make sure that the console cable is securely connected to the router

and to the PC or terminal.

• Verify that the parameters for your terminal are set to the following:

–

9600 baud

–

8 data bits

–

No parity generated or checked

–

1 stop bit

• Confirm that the Cisco IOS software version installed in the router

supports the WIC. The Cisco WAN Interface Cards Hardware Installation Guide lists the software requirements for each card.

Chapter 3 Troubleshooting

• The router might be overheating. Contact your Cisco reseller.

Router powers on and boots only when a particular cable

There might be a problem with the WIC or with the card cables. Consult

your Cisco reseller for warranty information. is disconnected.

Troubleshooting the Power System

If the router external power supply fails, you should return it to your Cisco reseller. Tab l e 3 - 3 list symptoms and possible causes of power problems.

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Chapter 3 Troubleshooting

Table 3-3 Troubleshooting the Power System

Symptom Possible Cause(s)

Router shuts down after being on a short time.

The router attempts to boot, but all LEDs remain off.

The router is on, but the front panel PWR LED is off.

The front panel PWR LED is on, the front panel OK LED is off, and the router does not pass console or EIA data.

• Make sure that the area in which the router is installed

meets the environmental site requirements in Appendix A,

“Technical Specifications,” in this guide.

• If the front panel PWR LED is not on, the power supply has

failed.

The power supply has failed.

Problem Solving

Troubleshooting ISDN

Because ISDN uses many variables and supports many different configurations, it sometimes can cause problems for the router. This section describes possible problems related to the ISDN line.

Two commands are useful for troubleshooting ISDN:

• For routers with an ISDN S/T WIC, enter the clear interface command to

terminate any active ISDN calls and to reset the ISDN BRI interface. Do this for each ISDN port installed in the router:

Router# clear interface bri0 Router# clear interface bri1

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Problem Solving

• For routers with an ISDN U WIC, use the clear controller command to

terminate any active ISDN calls, to reset the ISDN BRI interface, and to reset the ISDN line between the router and the central office switch. Do this for each ISDN port installed in the router:

Router# clear controller bri0 Router# clear controller bri1

Table 3-4 lists troubleshooting methods for ISDN-related problems that

might occur.

Table 3-4 Troubleshooting ISDN

WIC Symptom(s) Check the Following Possible Causes

ISDN S/T Router is on,

but OK LED on the card is off.

ISDN U Router is on,

but the NT-1 LED on the card is off.

• Is the OK LED on the

router front panel on?

• If the OK LED is not on, the

router might be malfunctioning. Contact your Cisco reseller.

• Are all ISDN cables

properly connected?

• If the cables are properly

connected, the ISDN line might be malfunctioning. Check with your ISDN service provider.

• Is the NT-1 LED on? • If the NT-1 LED is not on, the

NT1 might be malfunctioning.

• Is the OK LED on? • If the OK LED is not on, the

router might be malfunctioning. Contact your Cisco reseller.

• Are all ISDN cables

properly connected?

• If the cables are properly

connected, the ISDN line might be malfunctioning. Check with your ISDN service provider.

• Is the ISDN line

connected to the card ISDN U port?

• If the line is connected to the

port, the ISDN line might be malfunctioning. Check with your ISDN service provider.

Chapter 3 Troubleshooting

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APPENDIX

Technical Specifications

Table A-1 lists hardware and operating specifications for the Cisco 1721 router.

Table A-1 Cisco 1721 Router Specifications

Description Specification

Console port RJ-45

Auxiliary port RJ-45

Ethernet port RJ-45

Dimensions

H x W x D 3.1 x 11.2 x 8.7 in. (7.85 x 28.4 x 22.1 cm)

Weight

With two WICs

Power supply

External

2.6 lb (1.18 kg)

2.9 lb ( 1.32 kg)

Universal AC/DC switching—Supplies +5V, +12V, and –12V

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On-board

Power consumption 20W

Operating Specifications

Operating temperature

Storage temperature

Operating humidity

Supplies 3.3V and -5V

32° to 104°F (0 to 40°C)

–40° to 149°F (–40 to 65°C)

10% to 85%, noncondensing

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Appendix A Technical Specifications

A-2

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Cabling Specifications

This appendix describes cables and cabling guidelines for the Cisco 1721 router and contains the following sections:

• Ethernet Cables

• Ethernet Network Cabling Guidelines

• Console Cable and Adapter

Note For information about cables used with Cisco WICs, refer to the Cisco WAN

Interface Cards Hardware Installation Guide, which comes with each card.

Ethernet Cables

APPENDIX

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This section describes the Ethernet cables that are used to connect the router to your local Ethernet network. A 10/100BASE-TX router, such as the Cisco 1721 router, requires Category 5 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable. Ta ble B-1 gives the pinouts for an Ethernet cable.

Table B-1 Ethernet Cable Pinouts

RJ-45

1TX+ —>1

2TX– —> 2

Signal Direction

Cisco 1721 Router Hardware Installation Guide

RJ-45 Pin

B-1

Ethernet Network Cabling Guidelines

Table B-1 Ethernet Cable Pinouts (continued)

Appendix B Cabling Specifications

RJ-45

Signal Direction

RJ-45 Pin

3RX+ <— 3

6RX– <— 6

1. Pins 4, 5, 7, and 8 are not used for signaling.

Ethernet Network Cabling Guidelines

Table B-2 describes some guidelines for creating Ethernet networks. Figures

might vary, depending on the manufacturer of the network equipment.

Table B-2 Ethernet Cabling Guidelines

Specification 10BASE-T 100BASE-TX

Maximum segment length

Maximum number of segments per network

Maximum hop count

100 meters 100 meters

4 • With Class I

• With Class I

repeaters: 1

• With Class II

repeaters: 2

repeaters: none

B-2

Maximum number of nodes per segment

Cable type required UTP

1. Hop count = Routing metric used to measure the distance between a source and a destination.

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• With Class II

repeaters: 1

1024 1024

UTP Category 5 or STP

Category 3, 4, or 5

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Appendix B Cabling Specifications

Console Cable and Adapter

A console cable is provided with your router. Use this cable to connect the router to a PC or terminal. The router comes with a DB-9-to-DB-25 adapter that may be used for connecting the router to a modem, using the console cable.

Table B-3 describes the wiring for the console port and the console cable. This

table also includes pinouts for the DB-9-to-DB-25 adapter.

Table B-3 Console Cable and Adapter Pinouts

Console Cable and Adapter

Console (DTE)

Signal RJ-45 Pin DB-9 Pin DB-25 Pin Signal

RTS 1 8 5 CT S

DTR 2 6 8 DSR

TXD 3 2 3 RXD

GND 4 5 7 GND

GND 5 5 7 GND

RXD 6 3 2 TXD

DSR 7 4 20 DTR

CTS 8 7 4 RTS

Console Port

Console Cable Adapter

Terminal (DTE)

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B-3

Console Cable and Adapter

Appendix B Cabling Specifications

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APPENDIX

Installing and Upgrading Memory and Virtual Private Network Modules

This chapter tells how to install or upgrade memory and how to install a Virtual Private Memory (VPN) module in your Cisco 1721 router and includes the following sections:

• Safety Warnings

• Opening the Chassis

• Locating Modules

• Installing a DIMM

• Installing a VPN Module

• Closing the Chassis

Safety Warnings

Warning

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During this procedure, wear grounding wrist straps to avoid ESD damage to the router. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself.

Only trained and qualified personnel should be allowed to install or replace this equipment.

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Opening the Chassis

Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Warning

Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Read the installation instructions before you connect the system to its power source.

Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first.

Opening the Chassis

In order to upgrade Cisco 1721 router memory, you must open the chassis. Opening the chassis requires a number one Phillips screwdriver.

Follow these steps to open the chassis:

Step 1 Make sure the router is turned off and is disconnected from the power supply.

Step 2 Turn the router upside down, and rest the top of the router on a flat surface.

Step 3 Use the Phillips screwdriver to remove the four screws that hold the top and

bottom of the chassis together, as shown in Figure C-1.

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Figure C-1 Removing the Chassis Screws

#1 Phillips screwdriver

+5, +12, -12

WIC1OK

MOD OK

T S

L A

M E

10/100 ETH AUX

CONSOLE

LINK100

FDX

WIC0OK

Cisco 1721

odel

Opening the Chassis

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Rear panel

Top of router

Step 4

Turn the router back to its original position (top up).

Step 5 Gently pull the top of the router (which is facing up toward you) up and away from

the bottom of the router (which is resting on the flat surface).

At this point, you might have to disconnect the fan, which is inside the top of the router chassis, from the motherboard. Do this by disconnecting the fan cable from the connector (labeled FAN) on the motherboard.

Step 6 Place the router bottom on an antistatic mat, and begin installing memory.

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

[][]

Locating Modules

Figure C-2 shows where to find slots for a dual in-line memory module (DIMM)

and a VPN module on the router motherboard.

Figure C-2 Cisco 1700 Motherboard—Memory Locations

Rear panel of router

WAN interface card slot

DIMM slot VPN slot VPN standoff

Boot ROM

65635

holes

C-4

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Installing a DIMM

You can install a DIMM to increase the amount of dynamic random-access memory (DRAM) in the router.

Follow these steps to install a DIMM on the router motherboard:

Step 1 Locate the DIMM slot on the motherboard.

Step 2 Remove any existing DIMM by pulling the DIMM slot guides (shown in

Figure C-3) away from the DIMM and down toward the motherboard.

Figure C-3 Installing a DIMM

DIMM

DIMM slot

Installing a DIMM

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DIMM slot guides

Step 3 Insert the DIMM into the DIMM slot, making sure that the notches on the edge of

42289

the DIMM are inserted over the bars inside the DIMM slot, as in Figure C-3.

Step 4 Firmly press the DIMM into the slot until the two DIMM slot guides on each side

of the slot move up and over the end of the DIMM, as in Figure C-3. If the guides do not move up over the edge of the DIMM, move them with your hands.

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Installing a VPN Module

Follow the steps in this section to install a VPN module.

Step 1 Install the two standoffs on the module, as shown in Figure C-4.

Figure C-4 Installing the Standoffs on the VPN Module

Screw

Standoff

Screw

Standoff is installed

into the hole just behind

the large connector.

C-6

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Step 2 Locate the VPN module socket, and insert the VPN module, as shown in

Figure C-5.

Figure C-5 VPN Module Location

Installing a VPN Module

6582365824

Step 3

Pushing down as indicated in Figure C-6, plug the VPN module into the socket.

Figure C-6 Seating the VPN Module

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C-7

Installing a VPN Module

Step 4 Turn the motherboard over, and attach the standoffs to it by using the screws

Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

provided, as shown in Figure C-7.

Figure C-7 Securing the Standoff to the Router Motherboard

Standoff screws

C-8

Bottom of the board

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Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

Closing the Chassis

After installing memory or a VPN module on the motherboard, close the chassis by following these steps:

Step 1 If you disconnected the fan from the motherboard as described in the “Opening

the Chassis” section, reconnect the fan cable to the connector labeled FAN on the

motherboard.

Step 2 Locate the posts that protrude from the inside of the chassis cover, and locate the

corresponding openings on the chassis bottom.

Step 3 Line up the posts with the corresponding openings, as shown in Figure C-8, and

carefully slide the posts into the openings, taking care not to damage the router motherboard with the posts.

Closing the Chassis

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C-9

Closing the Chassis

Figure C-8 Closing the Chassis

Appendix C Installing and Upgrading Memory and Virtual Private Network Modules

C-10

Step 4

Replace the screws that you removed when you opened the chassis. (See

Figure C-1.)

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APPENDIX

Ordering and Configuring an ISDN Line

This appendix tells how to order and configure an Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) line for use with a Cisco 1721 router with an ISDN BRI WIC installed.

This appendix contains the following sections:

• ISDN BRI Line Configuration Requirements

• ISDN BRI Switch Types

• ISDN BRI Provisioning by Switch Type

• Defining ISDN Service Profile Identifiers

• ISDN Configuration Options

ISDN BRI Line Configuration Requirements

Before using a Cisco 1721 router with an ISDN BRI WIC installed, you must order a correctly configured ISDN BRI line from your local telecommunications service provider.

This process varies dramatically from provider to provider, both nationally and internationally. However, the following are some general guidelines:

• Ask for two channels to be called by one number.

• Ask for delivery of calling-line identification. This is also known as caller ID

or automatic number identification (ANI).

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D-1

ISDN BRI Switch Types

• If the router is going to be the only device attached to the ISDN BRI line, ask

for point-to-point service and a data-only line.

• If you will be connecting another ISDN device (such as an ISDN telephone)

to the ISDN BRI line, ask for point-to-multipoint service (subaddressing is required) and a voice-and-data line.

ISDN BRI Switch Types

ISDN BRI supports a variety of service provider switches. Table D-1 lists, by geographic area, the ISDN switch types supported by a Cisco 1721 router ISDN BRI interface. Use the isdn switch-type command followed by the corresponding keyword. You must reboot the router after you enter this command in order for the change to take effect.

Table D-1 ISDN Switch Types Supported by the Cisco 1721 Router

Switch Type Keyword

Australia

TS013 switches basic-ts013

Europe

German 1TR6 switches basic-1tr6

Norway NET3 switches (phase 1) basic-nwnet3

NET3 ISDN switches (UK and others) basic-net3

VN2 ISDN switches vn2

VN3 ISDN switches vn3

Japan

NTT switches ntt

North America

Basic 5ESS switches basic-5ess

NT DMS-100 and 5ESS custom switches basic-dms100

National ISDN-1(NI1) or switches basic-ni

Appendix D Ordering and Configuring an ISDN Line

D-2

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Appendix D Ordering and Configuring an ISDN Line

ISDN BRI Provisioning by Switch Type

Table D-1 ISDN Switch Types Supported by the Cisco 1721 Router (continued)

Switch Type Keyword

New Zealand

Net3 switches basic-nznet3

ISDN BRI Provisioning by Switch Type

The ISDN BRI line is configured (or provisioned) for different types of services by the ISDN BRI service provider. The person ordering the ISDN line must also order the provisioning described in this section.

Table D-2 lists the provisioning that should be ordered for the router, based on the

switch type.

Table D-2 Provisioning Required for ISDN Switch Types

Switch Type Provisioning

5ESS Custom BRI For data only

Two B channels for data. Point to point. Ter m i n a l t y p e = E. One directory number (DN) assigned by service provider. MTERM = 1. Request delivery of calling line ID on Centrex lines. Set speed for ISDN calls to 56 kbps outside local exchange.

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ISDN BRI Provisioning by Switch Type

Table D-2 Provisioning Required for ISDN Switch Types (continued)

Switch Type Provisioning

5ESS Custom BRI For voice and data

5ESS National ISDN (NI1) BRI

Appendix D Ordering and Configuring an ISDN Line

(Use these values only if you have an ISDN telephone connected.) Two B channels for voice or data. Multipoint. Ter m i n a l t y p e = D . Two directory numbers assigned by service provider. Two service profile identifiers (SPIDs) required, assigned by service provider. MTERM = 2. Number of call appearances = 1. Display = no. Ringing/idle call appearances = idle. Autohold = no. Onetouch = no. Request delivery of calling line ID on Centrex lines. Set speed for ISDN calls to 56 kbps outside local exchange. Directory number 1 can hunt to directory number 2.

Ter m i n a l t y p e = A . Two B channels for voice and data. Two directory numbers assigned by service provider. Two SPIDs required; assigned by service provider. Set speed for ISDN calls to 56 kbps outside local exchange. Directory number 1 can hunt to directory number 2.

D-4

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Appendix D Ordering and Configuring an ISDN Line

Defining ISDN Service Profile Identifiers

Table D-2 Provisioning Required for ISDN Switch Types (continued)

Switch Type Provisioning

DMS-100 BRI Two B channels for voice and data.

Two directory numbers assigned by service provider. Two SPIDs required; assigned by service provider. Functional signaling. Dynamic terminal endpoint identifier (TEI) assignment. Maximum number of keys = 64. Release key = no, or key number = no. Ringing indicator = no. EKTS = no. PVC = 2. Request delivery of calling line ID on Centrex lines. Set speed for ISDN calls to 56 kbps outside local exchange. Directory number 1 can hunt to directory number 2.

Defining ISDN Service Profile Identifiers

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An ISDN service provider, usually a telephone company, can offer a variety of services. Many providers use service profile identifiers (SPIDs) to identify the device that is using the ISDN service, similar to the way that the telephone company uses a telephone number to identify your standard telephone service. If you use such a service provider, the provider assigns your ISDN device one or more SPIDs when you first subscribe to the service. Providers use different numbering schemes, but a SPID is usually a seven-digit telephone number, plus some optional numbers.

The provider also assigns your device one or two local directory numbers (LDNs), which function as the router telephone number. The LDN is the number that a remote router dials to make a call to your router.

Note SPIDs have significance only at the local-access ISDN interface. Every router

that uses ISDN must be assigned SPIDs (if used by the service provider) by the service provider for that router.

Cisco 1721 Router Hardware Installation Guide

D-5

ISDN Configuration Options

When the router connects to the service provider’s central office ISDN switch, it sends the SPIDs to the switch. If the router is not configured with the correct SPIDs, it cannot place or receive calls. Use the isdn spid command to define the SPID and the LDN on the router for both ISDN BRI B channels, as follows:

Router(config-if)# isdn spid1 spid-number [ldn]

Router(config-if)# isdn spid2 spid-number [ldn]

Note Although the LDN is usually optional, it might be required so that the router

answers calls made to the second directory number.

ISDN Configuration Options

For information on how to configure Cisco 1721 router to dial in to a central-site router over ISDN, refer to the Cisco 1700 Router Software Configuration Guide.

For more advanced information on configuring ISDN for Cisco 1700 routers, refer to the chapter “Configuring ISDN” in the Dial Solutions Configuration Guide, which is on the Documentation CD-ROM that came with your router. This document includes information on the following topics:

• Snapshot Routing

• Dial-on-Demand Routing

Appendix D Ordering and Configuring an ISDN Line

• Bandwidth on Demand and Dial Backup

Snapshot Routing

You can configure snapshot routing for the router ISDN interface. During snapshot routing, the router is configured to bring up the ISDN line, to dynamically learn about remote routes, and then to take down the ISDN line. The router saves the learned routes for a specified period of time, even though routing updates are not exchanged while the ISDN line is down. See the chapter “Configuring DDR” in the Wide-Area Networking Configuration Guide for detailed information about snapshot routing.

Cisco 1721 Router Hardware Installation Guide

D-6

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Appendix D Ordering and Configuring an ISDN Line

Dial-on-Demand Routing

To place calls on the ISDN interface, you must configure it with dial-on-demand routing (DDR). See the chapter “Configuring DDR” in the Wide-Area Networking Configuration Guide for detailed information about DDR.

Bandwidth on Demand and Dial Backup

See the chapter “Configuring DDR” in the Wide-Area Networking Configuration Guide for detailed information about bandwidth on demand and dial backup.

ISDN Configuration Options

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Cisco 1721 Router Hardware Installation Guide

D-7

ISDN Configuration Options

Appendix D Ordering and Configuring an ISDN Line

D-8

Cisco 1721 Router Hardware Installation Guide

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INDEX

Numerics

100 LED 1-5

accessory kit 1-9

adapter, included 1-9

additional required equipment 1-9

ANI

See calling-line identification

Automatic Number Identification

See calling-line identification

auxiliary port

connecting

description 1-3, 1-4

illustration 1-4

2-12

back panel

connectors

description

illustration 1-4

LEDs

1-4 to 1-5

description

illustration 1-4

break, sending to router 3-4

BRI

See ISDN BRI

1-5

cables

console

Ethernet pinout B-1

included with router 1-9

requirements for Ethernet networks B-2

serial 1-10

caller ID

See calling-line identification

calling-line identification

caution, definition xiii

chassis

closing

dimensions A-1

opening C-2

Cisco reseller, contacting 3-1

closing chassis C-9

command conventions xvi

B-3

D-1

C-9

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Cisco 1721 Router Hardware Installation Guide

IN-1

Index

commands

config-register

3-6

configure terminal 3-6

copy 3-5, 3-6

enable 3-5

enable secret 3-6

isdn spid D-6

isdn switch-type D-2

reset 3-4

show startup-config 3-5

show version 1-8, 3-3

config-register command 3-6

configuration register

determining value

3-2 to 3-3

resetting 3-6 to 3-7

configure terminal command 3-6

connecting

Ethernet cable

2-2

power cord 2-8

router to a modem 2-12

router to a PC 2-10

console port

connecting

2-11

description 1-3, 1-4

illustration 1-4

specifications A-1

conventions

command

xvi

text xiii

copy command 3-5, 3-6

DIMM

installing

C-5

locating on router C-4

documentation, related xii

DRAM 1-8

enable command 3-5

enable password, recovering 3-2

enable secret command 3-6

enable secret password, resetting 3-6

ETH ACT LED 1-7

ETH COL LED 1-7

Ethernet cable

connecting

pinouts B-1

requirements for networks B-2

Ethernet port

connecting

description 1-3, 1-4

illustration 1-4

specifications A-1

2-2

2-2, 2-3

IN-2

Cisco 1721 Router Hardware Installation Guide

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Index

FDX LED 1-5

Flash memory 1-8

front panel

illustration

1-2

LEDs

description

1-6 to 1-7

illustration 1-6

hub

connecting to

2-3

description 1-10

installing

DIMM

equipment you provide 1-9

preparing for 2-1

stacking with other devices 2-14

verifying using LEDs 2-4, 2-9

VPN C-6 to C-8

wall-mounting 2-13

WAN interface cards 2-4

Integrated Services Digital Network

See ISDN BRI

C-5

ISDN

See ISDN BRI

ISDN BRI

configuring

options

D-6

requirements D-1

line configuration requirements D-1

point-to-multipoint service D-2

point-to-point service D-2

provisioning D-3 to D-5

SPID

configuring

D-6

definition D-5

switch types D-2

isdn spid command D-6

isdn switch-type command D-2

LEDs

back panel

1-4

front panel 1-6

OK LED diagnostics 3-7

using to verify installation 2-9

LINK LED 1-5

memory

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Cisco 1721 Router Hardware Installation Guide

IN-3

Index

description 1-7

DIMM

installing

C-5

locating on router C-4

displaying amounts 1-8

DRAM 1-8

Flash 1-8

NVRAM 1-8

show version command 1-8

modem

connecting to router

2-12

description 1-10

support 1-3

MOD OK LED 1-5

note, definition xiii

NVRAM 1-8

OK LED

description

diagnostics 3-7

opening chassis C-2

1-6

password, recovering 3-2

connecting to router

2-10

terminal emulation settings 2-11

pinouts

console cable

B-3

Ethernet cable B-1

power socket

connecting

2-8

illustration 1-4

specifications A-1

problem solving 3-7

PWR LED 1-6

reset command 3-4

resetting the router 3-4 to 3-5

router

resetting

3-4 to 3-5

specifications A-1

unpacking 1-9, ?? to 1-9

IN-4

serial cable 1-10

service profile identifier

Cisco 1721 Router Hardware Installation Guide

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Index

See SPID

show startup-config command

3-5

show version command 3-3

specifications, operating A-1

SPID

configuring

D-6

definition D-5

stacking router with other devices 2-14

switch

connecting to

2-3

description 1-10

terminal emulation, settings 2-11

text conventions xiii

troubleshooting

cables

contacting Cisco reseller 3-1

password recovery 3-2

using the OK LED 3-7

WAN interface cards 3-8 to 3-10

3-8

VPN module

installing

C-6 to C-8

location on router C-7

wall-mounting 2-13

WAN interface cards

description

installing 2-6

router slots 1-3

slot specifications A-1

supported cards 1-3

troubleshooting 3-8 to 3-10

warning, definition xiii

WIC0 ACT/CH0 LED 1-6

WIC0 ACT/CH1 LED 1-6

WIC0 OK LED 1-5

WIC1 ACT/CH0 LED 1-7

WIC1 ACT/CH1 LED 1-7

WIC1 OK LED 1-5

1-10

unpacking the router 1-9, ?? to 1-9

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Cisco 1721 Router Hardware Installation Guide

IN-5

Index

IN-6

Cisco 1721 Router Hardware Installation Guide

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Cisco 1721 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

Preface

Audience and Scope

Organization

Related Documentation

Conventions

Notes, Cautions, and Warnings

Obtaining Documentation

Commands

Cisco.com

Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Obtaining Technical Assistance

Cisco Technical Support Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information

Cisco 1721 Router Overview

Key Features

Back Panel Ports and LEDs

Front Panel LEDs

Router Memory

Types of Memory

Amounts of Memory

Unpacking the Router

Additional Required Equipment

Installation

Before Installing the Router

Connecting the Router to Your Local Network

Installing WICs

Safety Information

WIC Installation

Connecting Power to the Router

Verifying Your Installation

Optional Installation Steps

Connecting a PC

Connecting a Modem

Wall-Mounting

Stacking the Router

Unstacking the Router

Troubleshooting

Contacting Your Cisco Reseller

Recovering a Lost Password

Determining the Configuration Register Value

Resetting the Router

Resetting the Password

Resetting the Configuration Register Value

Problem Solving

OK LED Diagnostics

Troubleshooting WICs and Cables

Troubleshooting the Power System

Troubleshooting ISDN

Technical Specifications

Cabling Specifications

Ethernet Cables

Ethernet Network Cabling Guidelines

Console Cable and Adapter

Installing and Upgrading Memory and Virtual Private Network Modules

Safety Warnings

Opening the Chassis

Locating Modules

Installing a DIMM

Installing a VPN Module

Closing the Chassis

Ordering and Configuring an ISDN Line

ISDN BRI Line Configuration Requirements

Defining ISDN Service Profile Identifiers

ISDN Configuration Options

Snapshot Routing

Dial-on-Demand Routing

Bandwidth on Demand and Dial Backup

INDEX