Cisco Systems 837, SOHO 97 User Manual 2

Cisco 837 Router and SOHO 97 Router Hardware Installation Guide

Corporate Headquarters

Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]

800 553-NETS (6387)

Fax: [phone]

Customer Order Number: DOC-7814781=

Text Part Number: 78-14781-02

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.

CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We
Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst,
CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco
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Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet
Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

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 837 Router and SOHO 97 Router Hardware Installation Guide

Copyright © 2005 Cisco Systems, Inc. All rights reserved.

Preface ix

Obtaining Documentation xii

Cisco.com xii
Documentation DVD xiii
Ordering Documentation xiii

Documentation Feedback xiii

Cisco Product Security Overview xiv

Reporting Security Problems in Cisco Products xiv

Obtaining Technical Assistance xv

Cisco Technical Support Website xv
Submitting a Service Request xvi
Definitions of Service Request Severity xvii

Obtaining Additional Publications and Information xvii

Product Overview 1-1

Features 1-2

CONTENTS

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Router Overview 1-3

Front Panels 1-4
Back Panel 1-5
LED Functions 1-6

Installation 2-1

Preparing for Installation 2-2

Safety 2-2

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Contents

Warnings 2-2
Preventing Electrostatic Discharge Damage 2-4

Unpacking the Box 2-5

Preventing Damage to the Router 2-6

Mounting the Router 2-7

Mounting on a Table 2-7
Mounting on a Wall 2-7

Installing the Router 2-10

Connecting Ethernet Devices 2-11

Connecting a Server, PC, or Workstation 2-11
Connecting an ADSL Line 2-13
Connecting a Terminal or PC to the Router’s Console Port (Optional) 2-15
Connecting the AC Adapter 2-16
Connecting the Console Port to an Async Modem 2-18

Using the Router LEDs to Check Links 2-20

Configuring the Router 2-20
Checking the PC Configuration 2-20
Using Cisco Router Web Setup to Configure the Router 2-21

vi

Troubleshooting 3-1

Before You Call Your Cisco Reseller 3-1

Problems During First Startup 3-2

Problems After Router Is Running 3-3

Specifications and Cables A-1

System Specifications A-1

Port Connector Pinouts A-2

Cabling Specifications A-4

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I

NDEX

Contents

Ethernet Cable Specifications A-4
Maximum Cable Distances A-4

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Contents

viii

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Preface

This preface describes the audience for, organization of, and conventions used in
this guide. It also describes related documentation and tells how to access
electronic documentation.

Audience

This guide is intended for service technicians who have no experience installing
routers but whose goal is to connect routers to networks as quickly as possible.

Organization

This guide is organized as follows:

• Chapter 1, “Product Overview”—Describes the Cisco 837 and SOHO 97

routers and their features.

• Chapter 2, “Installation”—Provides information on preinstallation,

mounting, connecting, and configuring of the router, and verification of
router connections.

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• Chapter 3, “Troubleshooting”—Describes problems with the router and how

to identify and solve them.

• Appendix A, “Specifications and Cables”—Provides Cisco part numbers for

cables that you can order and contains port connector pinouts and
specifications for cables that you might need to provide.

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ix

Conventions

This section describes the conventions used in this guide.

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

additional information and material.

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

that could result in equipment damage or loss of data.

Preface

Warning

Waarschuwing

Varoitus

Attention

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 the standard practices
for preventing accidents.

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.

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.

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.

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Preface

Warnung

Avvertenza

Advarsel

Aviso

¡Atención!

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.

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.

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.

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.

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.

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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.

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Obtaining Documentation

Related Documentation

In addition to this Cisco 837 Routers and SOHO 97 Hardware Installation Guide,
the documentation for the Cisco 837 and SOHO 97 routers includes the following:

• Cisco 837 Router and SOHO 97 Router Cabling and Setup Quick Start Guide

• Cisco 800 Series Routers Software Configuration Guide

• Upgrading Memory in Cisco 800 Series Routers

• Regulatory Compliance and Safety Information for Cisco 800 Series and

SOHO Series Routers

You might also need to refer to the following documents:

• Cisco IOS Release 12.0 Quality of Service Solutions Configuration Guide

• Cisco IOS Security Configuration Guide, Release 12.0

Obtaining Documentation

Preface

Cisco.com

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xii

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.

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

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Preface

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.

Cisco Ordering tool:

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

Cisco Marketplace:

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

Ordering Documentation

Documentation Feedback

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/

• 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 [e-mail].

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xiii

Cisco Product Security Overview

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.

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.

Preface

• 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

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— [e-mail]

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Preface

Obtaining Technical Assistance

• Nonemergencies— [e-mail]

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

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.

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

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xv

Obtaining Technical Assistance

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

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: [phone] (Australia: 1 800 805 227)
EMEA: [phone]
USA: 1 800 553-2447

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Preface

Obtaining Additional Publications and Information

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.

Severity 3 (S3)—Operational performance of your network is impaired, but most
business operations remain functional. You and Cisco will commit resources
during normal business hours to restore service to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product
capabilities, installation, or configuration. There is little or no effect on your
business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is
available from various online and printed sources.

• Cisco Marketplace provides a variety of Cisco books, reference guides, and

logo merchandise. Visit Cisco Marketplace, the company store, at this URL:

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

• 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

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xvii

Obtaining Additional Publications and Information

• 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:

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:

Preface

xviii

http://www.cisco.com/ipj

• World-class networking training is available from Cisco. You can view

current offerings at this URL:

http://www.cisco.com/en/US/learning/index.html

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CHA P T E R

1

Product Overview

The Cisco 837 and SOHO 97 routers are asymmeric digital subscriber line
(ADSL)–over–plain old telephone service (POTS) routing devices. They have an
integrated 4-port Ethernet switch for the LAN and an ADSL physical interface for
the WAN, allowing the routers to connect a corporate telecommuter or small
office to corporate LANs and the Internet.

The routers support high-speed encryption, the10/100BASE-T switch, and dial
backup functionality via the auxiliary console port. The autosensing function in
these routers eliminates the need for a crossover cable and allows the router to
detect medium dependent interface in normal mode (MDI) or medium dependent
interface in crossover mode (MDIX) in any other PC or hub with a
straight-through cable or a crossover cable. The routers are capable of bridging
and multiprotocol routing between LAN and WAN ports.

The dial backup feature allows the user to connect an analog modem to the
console port as a backup link to the WAN in case the ADSL service goes down.
This feature gives the Cisco 837 and SOHO 97 routers a high level of performance
and security.

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The Cisco 837 router is designed with both hardware-based and software-based
encryption, while the SOHO 97 router supports only software-based encryption.
The Cisco 837 routers support the addition of Flash memory or DRAM, either as
a factory upgrade or a field-installed option. SOHO 97 routers have a fixed
memory configuration.

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1-1

Chapter 1 Product Overview

Features

Features

Table 1-1 summarizes the features of the Cisco 837 and SOHO 97 routers.

Table 1-1 Feature Summary for Cisco 837 and SOHO 97 Routers

Feature Description

10/100BASE-T Ethernet
switch

ADSL port Provides connection to ADSL network. Does not support auto-switch

Flash memory 8 MB of Flash memory; up to 16 MB of expandable Flash memory on

Synchronous dynamic
RAM (SDRAM)

Ease of installation Color-coded ports and cables reduce the chance of error.

Cisco IOS software Supports Cisco IOS software.

LAN interface Fully compliant with IEEE 802.3 and IEEE 802.3u. Automatic

Cisco Router Web Setup Provides a web-based software tool for basic configurations.

Console port Provides connection to terminal or PC for troubleshooting and for

Dying gasp Provides dying gasp function. If the router is about to lose power, this

Provides connection to 10BASE-T (10-Mbps) or 100BASE-T
(100-Mbps) Ethernet networks. Compatible with 10/100-Mbps devices.

function.

the Flash module.

32 MB of SDRAM on board.

MDI/MDIX crossover function eliminates the need for crossover
cables.

software configuration using a command-line interface. This port is
configured as a data communication equipment (DCE) port with the
hardware handshake.

function detects the situation and sends a signal to warn the digital
subscriber line access multiplexers (DSLAM) about the impending line
drop.

1-2

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Chapter 1 Product Overview

Router Overview

Table 1-1 Feature Summary for Cisco 837 and SOHO 97 Routers (continued)

Feature Description

Wall-mounting feature Brackets on the router bottom provide for mounting the router on a wall

or vertical surface.

IPSec Hardware
Accelerator

Only the Cisco 837 router supports this feature. The Hifn 7902 security
processor implements symmetric key encryption, public key
encryption, authentication, and data compression in hardware.
Algorithms implemented by the processor include Data Encryption
Standard (DES) and Triple DES (3DES); Secure Hash Algorithm
(SHA-1), Message Digest 5 (MD5), Hash-based Message
Authentication Code (HMAC); and Lempel-Ziv-Stac (LZS)
compression and Microsoft Point-to-Point Compression (MPPC).

Router Overview

The following section shows the front and back panels of the Cisco 837 router and
the SOHO 97 router. The Cisco 837 router and the SOHO 97 router each have four
Ethernet ports.

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1-3

Router Overview

Front Panels

Chapter 1 Product Overview

Figure 1-1 and Figure 1-2 show the front panels of the Cisco 837 and SOHO 97

routers.

Figure 1-1 Cisco 837 Front Panel

OK

CD

RXD

TXD

ADSL

Figure 1-2 SOHO 97 Front Panel

OK

CD

RXD

TXD

ADSL

1

2

1

2

3

4

RXD

ETHERNET

CISCO 800

SERIES

3

4

RXD

ETHERNET

TXD

CISCO SOHO

SERIES

TXD

82005

82006

1-4

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Chapter 1 Product Overview

Back Panel

Router Overview

Figure 1-3 shows the back panel of the Cisco 837 router. The back panel of the

SOHO 97 router looks the same as the back panel of the Cisco 837 router.

ETHERNET

4

3

2

1

1

3

2

4

1 Ethernet port 4 connects to

Ethernet network device

2 Ethernet port 3 connects to

Ethernet network device

3 Ethernet port 2 connects to

Ethernet network device

4 Ethernet port 1 connects to

CONSOLE

5

Cisco 837

ADSL

6

+18 VDC

7

8

5 Console port connects to PC or

terminal

6 ADSL port connects to external

wall jack

7 Input jack connects to desktop

power supply

8 Power on/off button

82007

Ethernet network device

Figure 1-3 Cisco 837 Back Panel

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1-5

Router Overview

LED Functions

Table 1-2 summarizes the functions of the LEDs on the Cisco 837 router and the

SOHO 97 router.

Table 1-2 Functions of LEDs on the Cisco 837 Router and SOHO 97 Router

LED Color Function

PWR_OK

ADSL_CD

ADSL_RxD

ADSL_TxD

E1 Status

E2 Status

E3 Status

E4 Status

LAN_RxD

LAN_TxD

Green On when DC power is being supplied to the router. The light blinks if an error

occurs during boot-up.

Green On when the ADSL carrier detects status and connects to Digital Subscriber

Line Access Multiplexer (DSLAM) successfully.

Green Blinks when the ADSL receives data.

Green Blinks when the ADSL transmits data. Off when no data is being uploaded.

Green On when Ethernet 1 connects to the Ethernet interface successfully. Blinks

when Ethernet 1 receives or sends data, or when data passes through
Ethernet 1.

Green On when Ethernet 2 connects to the Ethernet interface successfully. Blinks

when Ethernet 2 receives or sends data, or when data passes through
Ethernet 2.

Green On when Ethernet 3 connects to the Ethernet interface successfully. Blinks

when Ethernet 3 receives or sends data, or when data passes through
Ethernet 3.

Green On when Ethernet 4 connects to the Ethernet interface successfully. Blinks

when Ethernet 4 receives or sends data, or when data passes through
Ethernet 4.

Green Blinks when the LAN port receives data from the WAN port.

Green Blinks when the LAN port transmits data to the WAN port.

Chapter 1 Product Overview

1-6

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CHA P T E R

Installation

This chapter provides information on the following topics:

• Preparing for Installation

• Preventing Damage to the Router

• Mounting the Router

• Installing the Router

• Using the Router LEDs to Check Links

2

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2-1

Preparing for Installation

Preparing for Installation

This section provides information on safety, mounting of the router, and
unpacking of the router box.

Safety

This section provides safety warnings and electrostatic and router damage
information for the Cisco 837 and SOHO 97 routers.

Warnings

Before installing the router, read the following warnings:

Chapter 2 Installation

Warning

Warning

Warning

Warning

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

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

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

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.

2-2

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Chapter 2 Installation

Preparing for Installation

Warning

Warning

Warning

Warning

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits,
and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45
connectors. Use caution when connecting cables.

Ultimate disposal of this product should be handled according to all national
laws and regulations.

If the symbol of suitability with an overlaid cross ( ) appears above a port, you
must not connect the port to a public network that follows the European Union
standards. Connecting the port to this type of public network can cause severe
injury or damage your router.

This equipment is not designed for making emergency telephony calls when the
power fails. Alternative arrangements should be made for access to emergency
services. Access to emergency services can be affected by any call-barring
function of this equipment.

To reduce the risk of fire, use only No.26 AWG or larger telecommunication line
cord.

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Warning

Warning

This equipment contains a ring signal generator (ringer), which is a source of
hazardous voltage. Do not touch the RJ-11 (phone) port wires (conductors), the
conductors of a cable connected to the RJ-11 port, or the associated
circuit-board when the ringer is active. The ringer is activated by an incoming
call.

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

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2-3

Preparing for Installation

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) is a transfer of electrostatic charge between bodies
of different electrostatic potentials, such as an operator and a piece of electrical
equipment. It occurs when electronic components are improperly handled, and it
can damage equipment and impair electrical circuitry. Electrostatic discharge is
more likely to occur with the combination of synthetic fibers and dry atmosphere.

Always use the following ESD-prevention procedures when removing and
replacing components:

Step 1 Wear an ESD-preventive wrist strap that you provide, ensuring that it makes good

skin contact.

Caution To properly guard against ESD damage and shocks, the wrist strap and cord must

operate effectively. Always observe the warnings in the “Warnin g s ” section on
page 2-2.

Step 2 Do not touch any exposed contact pins or connector shells of interface ports that

do not have a cable attached. If cables are connected at one end only, do not touch
the exposed pins at the unconnected end of the cable.

Chapter 2 Installation

2-4

Note This device is intended only for use in residential and commercial environments.

Caution Periodically check the resistance value of the antistatic strap, which should be

between 1 and 10 megohms (Mohms).

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Chapter 2 Installation

Unpacking the Box

Table 2-1 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. If any of the items is
missing or damaged, contact your customer service representative.

Table 2-1 Router Box Contents

•

Power cord (black)

• Desktop power supply

• ADSL cable (lavender)

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

• Async modem cable for dial backup and remote

management, RJ-45-to-DB-25 (light blue)
(ORDERED SEPARATELY)

• Ethernet cable (yellow)

• Product documentation

Preparing for Installation

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To prepare for installation, follow these steps:

Step 1 Obtain the ADSL line.

Step 2 Remove the yellow Ethernet cable, light blue console cable, lavender ADSL

cable, and product documentation from the Open Me First bag. Remove the
desktop power supply and the black power cord from the accessory kit. Gather the
Ethernet devices to be connected to the router: hub, server, workstation, or PC.

Step 3 If you plan to connect an analog telephone or fax machine, gather these devices.

You must also provide the telephone cable to connect each device.

Step 4 If you plan to configure the software using a terminal or a PC connected to the

router, provide the terminal or PC.

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2-5

Preventing Damage to the Router

Note An optional cable used for connecting a Cisco 837 router’s console port to an

async modem is available for dial backup and remote management. (The
SOHO 97 router does not need this cable.) This SOHO/800 Series Router Modem
Cable needs to be ordered separately. Contact your router vendor to order this
cable.

Preventing Damage to the Router

Follow these guidelines when connecting devices to your router:

• Connect the color-coded cables supplied by Cisco Systems to the color-coded

ports on the back panel.

• If you must supply your own cable, see Appendix A, “Specifications and

Cables,” for cabling specifications. If this appendix does not provide

specifications for a particular cable, we strongly recommend that you order
the cable from Cisco Systems.

• If the symbol of suitability ( ) appears above a port, you can connect the port

directly to a public network that follows the European Union standards.

Chapter 2 Installation

2-6

Warning

Cisco 837 Router and SOHO 97 Router Hardware Installation Guide

If the symbol of suitability with an overlaid cross ( ) appears above a port, you
must not connect the port to a public network that follows the European Union
standards. Connecting the port to this type of public network can cause severe
injury or damage to your router.

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Chapter 2 Installation

Mounting the Router

You can mount the router on one of the following surfaces:

• Table or other horizontal surface

• Wall or other vertical surface

Mounting on a Table

Place the router firmly on a table, and perform the procedure given in the

“Installing the Router” section on page 2-10.

Caution Do not cover or obstruct the router vents, which are located on the sides of the

router. If the vents are covered or obstructed, overheating could occur and cause
damage to the router.

Mounting the Router

Mounting on a Wall

You can mount the router on a wall or other vertical surface by using the molded
mounting brackets on the bottom of the router and two number-six, 3/4-in.
(M3.5 x 20 mm) screws. You must provide the screws. Figure 2-1 shows the
mounting brackets.

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2-7

Mounting the Router

Chapter 2 Installation

Figure 2-1 Wall-Mounting Brackets (Bottom of Router)

1

2

3

4

80289

1 Front panel of router 3 Distance between two mounting

brackets (7 5/8 in. or 19.35 cm)

2 Mounting bracket 4 Bottom of router

2-8

Caution If you are mounting the router on drywall, use two hollow-wall anchors (1/8-in.

with 5/16-in. drill bit, or M3 with 8-mm drill bit) to secure the screws. If the
screws are not properly anchored, the strain of the network cable connections
could pull the router from the wall.

The following requirements must be met when you mount the router:

• Because the LEDs are used as status and problem indicators, the LEDs on the

front panel must face upward and must be easily visible.

• The back panel must face down to reduce strain on the cable connections.

• The power supply must rest on a horizontal surface, such as the floor or a

table. If the power supply is not supported, strain on the power supply cable
could cause it to disconnect from the connector on the router back panel.

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Chapter 2 Installation

To mount the router, follow the steps given after Figure 2-2.

Figure 2-2 Mounting Router on a Wall

Mounting the Router

1

2

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OK

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Installing the Router

Chapter 2 Installation

1 Two number-six, 3/4-in.

screws

2 Distance between the two

screws (7 5/8 in. [19.35 cm])

3 Cisco 837 router 7 Distance between the screw and

4 Mounting brackets

Perform the following steps to mount the router on the wall:

Step 1 Secure two screws 7 5/8 inches (19.35 cm) apart into a wall and 1/8 inch (0.32 cm)

from the wall.

Step 2 Hang the router on the screws as shown in Figure 2-3.

Step 3 Place the power supply on a horizontal surface.

Installing the Router

5 Maximum distance between the

router and the power supply
(6 ft [1.8 m])

6 Horizontal surface for placing

the power supply.

the wall (1/8 in. [0.32 cm]).

2-10

To install the router, you need to perform the following tasks in the following
order:

1. Connect the Ethernet devices to the router.

2. Connect the ADSL line.

3. Connect a terminal or PC to the router for software configuration using the

command-line interface (CLI) or for troubleshooting.

4. Connect the router to the power source.

5. Verify the links, using the router LEDs.

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Chapter 2 Installation

Connecting Ethernet Devices

You can use a cable to connect an Ethernet device to the router’s LAN port.

Connecting a Server, PC, or Workstation

Follow the steps given after Figure 2-3 to connect the router to a PC with an
Ethernet network interface card (NIC) installed, or to connect a server or
workstation to the router. (Figure 2-3 shows a Cisco 837 router, but it also applies

to a SOHO 97 router. The procedure applies to both the Cisco 837 router and the

SOHO 97 router.)

The Ethernet port on the Cisco 837 router and the SOHO 97 router supports the
auto-crossover function, whose autosensing ability allows the router to connect
automatically to the hub or PC.

Installing the Router

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Installing the Router

Chapter 2 Installation

Figure 2-3 Connecting a Server, PC, or Workstation to the Router

2

1

ETHERNET

4

3

2

Cisco 837

CONSOLE

1

ADSL

3

4

82001

2-12

5

1 Cisco 837 router 4 PC

2 Yellow Ethernet cable 5 RJ-45 port on the network

interface card (NIC)

3 Ethernet port 4

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Chapter 2 Installation

Step 1 Connect one end of the yellow Ethernet cable to Ethernet port 4 on the router.

Step 2 Connect the other end of the yellow Ethernet cable to the RJ-45 port on the NIC

Note Leave the PCs that you connect to the router turned off until after you complete

Installing the Router

Perform the following steps to connect the PC to Ethernet port 4 (or to port 1, 2,
or 3) on the router:

of the PC, server, or workstation.

router installation.

You can connect additional servers, PCs, or workstations to Ethernet ports 1, 2,
and 3.

To verify the connection, check that the Ethernet 1 LED is on after you complete
the router installation.

Connecting an ADSL Line

The procedure for connecting an ADSL line depends on the router and, in some
cases, on the location. Figure 2-4 shows how to connect the ADSL line to a cable
wall jack. Follow the steps given after Figure 2-4 to connect the ADSL line to a
cable wall jack. (Figure 2-4 depicts a Cisco 837 router, but it also applies to the

SOHO 97 router. The connection procedure applies to both the Cisco 837 router
and the SOHO 97 router.)

Warning

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

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2-13

Installing the Router

Chapter 2 Installation

ETHERNET

4

3

2

Cisco 837

CONSOLE

1

ADSL

+18 VDC

ON

OFF

82012

1

2

1 ADSL port 2 End of the RJ-11 cable that

connects to the wall jack

Figure 2-4 Connecting an ADSL Line to a Wall Jack

2-14

Perform the following steps to connect the ADSL line to the router and a cable
wall jack:

Step 1 Connect one end of the ADSL cable line to the ADSL port on the router.

Step 2 Connect the other end of the RJ-11 cable to the wall jack.

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Chapter 2 Installation

Installing the Router

Connecting a Terminal or PC to the Router’s Console Port (Optional)

You can connect either a terminal or a PC to the router’s console port. You can use
the terminal or PC for configuring the software via the command-line interface
(CLI) or for troubleshooting. To connect a terminal or PC, follow the steps given
after Figure 2-5. (Figure 2-5 shows a Cisco 837, but it also applies to the

SOHO 97 router. The connection procedure applies to both the Cisco 837 router
and the SOHO 97 router.)

Note Unless you are an experienced network administrator, it is recommended that you

use the Cisco Router Web Setup software to configure the router. Use of this
software is described in the “Using Cisco Router Web Setup to Configure the

Router” section on page 2-21.

Figure 2-5 Connecting a Terminal or PC to the Router’s Console Port

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ETHERNET

43

2

Cisco 837

CONSOLE

1

ADSL

+18 VDC

ON

OFF

1

2

1 Console port on the router 2 DB-9 connector

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82013

2-15

Installing the Router

Perform the following steps to connect the router’s console port to a terminal or
PC:

Step 1 Connect the RJ-45 connector on one end of the light blue cable to the console port

on the router.

Step 2 Connect the DB-9 connector on the other end of the cable to the terminal or PC.

If you have experience configuring Cisco routers and prefer to use the CLI, refer
to the Cisco 800 Series Routers Software Configuration Guide for instructions on
configuring the router.

Connecting the AC Adapter

To connect the power supply, follow the steps given after Figure 2-6. (Figure 2-6
depicts a Cisco 837 router, but it also applies to the SOHO 97 router. The
connection procedure applies to both the Cisco 837 router and the SOHO 97
router.)

Chapter 2 Installation

2-16

Warning

Warning

Warning

Cisco 837 Router and SOHO 97 Router Hardware Installation Guide

The device 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 120 VAC, 15A U.S.
(240 VAC, 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.

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Chapter 2 Installation

Figure 2-6 Connecting the AC Adapter

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TH

ER

N

ET

4

3

2

Cisco 837

CO

NSOLE

1

ADS

L

+18 VD

Installing the Router

1

C

ON

OFF

2

5

3

4

1 Cisco 837 router 4 Desktop power supply

2 Router input jack 5 Power cord plug

3 Power cord

Perform the following steps to connect the router to the AC adapter:

Step 1 Connect one end the power supply cable to the router’s input jack.

Step 2 Connect the other end of the power supply cable to the desktop power adapter.

Step 3 Plug the power cord of the desktop power adapter into an electrical outlet.

Note Be sure to use the power supply that was shipped with your router. Although you

may be able to connect another Cisco power supply to your router, that power
supply may not provide all the features that are provided by the power supply that
shipped with your router.

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Installing the Router

Connecting the Console Port to an Async Modem

The Cisco 837 router is designed with the dial backup function, allowing you to
connect an analog modem to the console port as a backup link to the WAN port in
case the ADSL service goes down. The Cisco 837 router supports both the dial
backup and remote management features; the SOHO 97 supports only the remote
management function.

Note To connect an analog modem to the console port, you will need an optional

SOHO/800 Series Router Modem Cable. Contact your router vendor to order this
cable.

To connect the Cisco 837 router’s console port to an async modem, follow the
steps given after Figure 2-7. This procedure applies only to the Cisco 837 router.

Chapter 2 Installation

2-18

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Chapter 2 Installation

Installing the Router

Figure 2-7 Connecting the Console Port to an Async Modem

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5

4

1 Cisco 837 router 4 Wall jack

2 Console port 5 Telephone

3 Available port on an async

modem

Cisco 837 Router and SOHO 97 Router Hardware Installation Guide

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2-19

Using the Router LEDs to Check Links

Perform the following steps to connect the Cisco 837 router’s console port to an
async modem:

Step 1 Connect the RJ-45 end of the SOHO/800 Series Router Modem Cable to the

Cisco 837 router’s console port.

Step 2 Connect the DB-25 connector at the other end of the SOHO/800 Series Router

Modem Cable to an available port on the async modem.

Step 3 Connect one end of the RJ-11 cable to the wall jack.

Step 4 Connect the other end of the RJ-11 cable to the telephone line.

Using the Router LEDs to Check Links

Use the LEDs on the front of the router to check the links between the router and
any attached Ethernet devices or telephones. See Table 1-2 on page 1-6 to verify
the link status of devices attached to Cisco 837 and SOHO 97 routers.

Chapter 2 Installation

Configuring the Router

When you finish installing the router, you must configure the router software.
First, check the PC configurations to ensure that all the connected PCs will be able
to communicate with the router. Then configure the router software, using the web
interface.

Checking the PC Configuration

Each PC that is connected to the router must be configured to use TCP/IP and to
obtain its IP address automatically. Follow these steps to configure each PC that
is running Microsoft Windows NT or Microsoft Windows 95 or 98. If the PC is
running a different version of Microsoft Windows, refer to the documentation that
came with the PC.

Step 1 Start the PC, and open the Control Panel.

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Chapter 2 Installation

Step 2 Click the Network icon to display the Network window.

Step 3 Verify that TCP/IP has been added and associated with the Ethernet adapter.

Step 4 To verify that the PC is configured to obtain an IP address automatically, click the

Step 5 Click OK to accept all changes and exit this window. Then click OK in the

Step 6 To reboot the PC, click Yes if you are prompted.

Using the Router LEDs to Check Links

TCP/IP is shown as a cable icon in the Configuration window on Microsoft
Windows 95 and 98; it is shown as a cable icon in the Protocol window on
Microsoft Windows NT. If the icon is not visible, click Add, and add the
Microsoft TCP/IP protocol.

TCP/IP cable icon, and select the IP address tab in the TCP/IP Properties
window. Check Obtain an IP address from a DHCP server if it is not checked.
The IP address and Subnet mask fields should be grayed out.

Network window.

For more information on how to configure TCP/IP, refer to the Cisco Router Web
Setup Troubleshooting Guide, which is available on Cisco.com.

Using Cisco Router Web Setup to Configure the Router

Cisco strongly recommends that inexperienced network administrators use the
Cisco Router Web Setup application that has been installed on the router. To use
this application, complete the following steps:

Step 1 Start, or restart, one of the PCs connected to the router through Ethernet port 1,

2, 3, or 4.

Step 2 Open a web browser. Make sure that your browser is set to work in online mode.

• In Internet Explorer, click the File menu, and verify that the work offline

option is unchecked.

• In Netscape, the default selection in the File menu is set to work online.

Step 3 Enter the universal resource locator (URL) http://10.10.10.1. The CRWS home

page will appear in one or two minutes.

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2-21

Using the Router LEDs to Check Links

Tip If the CRWS home page does not appear when you enter the URL

http://10.10.10.1, test the connection between the PC and the router by doing the
following:

1. Check that the OK LED on the router is on, and check the cable connection

between the router and the PC.

2. If the CRWS home page still does not appear, verify that the web browser’s

“work offline” option is disabled.

3. If the web page still does not appear, verify that the PC is automatically

configured to receive an IP address. Follow the instructions in the
Cisco Router Web Setup Troubleshooting Guide, which is available on
Cisco.com.

4. If the PC is configured to automatically receive an IP address, but the web

page still does not appear, select Start/Run, type winipcfg in the Run
window, and examine the address in the IP address field. The address should
be in the format 10.10.10.X, in which X is a number that is equal to or greater
than 2; for example, 10.10.10.2, or 10.10.10.3. If the IP address is not in this
format, verify that an Ethernet adapter name is visible in the Adapter field. If
there is no name in the field, return to Step 3 in the “Checking the PC

Configuration” section on page 2-20, and add TCP to the list of protocols.

Then return to the “Using Cisco Router Web Setup to Configure the Router”

section on page 2-21, and complete the procedure.

Chapter 2 Installation

2-22

Step 4 If you have no special configuration requirements, click the Router Setup link

on the home page, and then click Easy Setup. (This may appear as Quick
Setup.) Then, enter the username and password provided to you by your Internet
service provider, and click Apply.

Step 5 If you need to configure special features such as Network Address Translation

(NAT), click the appropriate links on the home page, and complete the
configuration screens.

Step 6 Click the Password link on the home page, and set a password for the router.

Step 7 Click the Test Connection link on the home page, and allow the connection to be

tested.

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Chapter 2 Installation

Step 8 Select Start/Run, and type winipcfg in the Open field of the Run window. When

Step 9 Open a web browser on the PC, and connect to a website.

Using the Router LEDs to Check Links

the IP Config window appears, click Release to release the PC’s IP address.
Then click Renew to renew the PC’s IP address.

Alternatively, open the Run window and enter ipconfig /release to release the
PC’s IP address.Then enter ipconfig /renew to renew the IP address of the PC.

The router installation is complete when you have connected to a website.

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Using the Router LEDs to Check Links

Chapter 2 Installation

2-24

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CHA P T E R

Troubleshooting

This chapter describes symptoms of problems that could occur with the Cisco 837
or SOHO 97 routers, identifies the likely underlying problems, and provides steps
for solving the problems. The problems are grouped as follows:

• Problems During First Startup

• Problems After Router Is Running

For more information about problems that could occur with the software, refer to
the Cisco 800 Series Routers Software Configuration Guide.

Before You Call Your Cisco Reseller

Some of the solutions in this chapter instruct you to contact your Cisco reseller.
Before you contact your reseller, make sure that you have the following
information available:

• Router model and serial number (on the back panel)

3

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• Maintenance agreement or warranty information

• Date you received the router

• Brief description of the problem

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

Cisco 837 Router and SOHO 97 Router Hardware Installation Guide

3-1

Problems During First Startup

Problems During First Startup

Table 3-1 lists problems that could occur the first time you turn on the router.

Table 3-1 Problems During First Startup

Symptom Problem Solutions

All LEDs,
including OK
LED, are off.

No connection to
Ethernet device.
(Ethernet 1 LED is
off.)

No connection to
ADSL link. (The
CD LED on the
front panel is off
for a long time.)

No connection to
ADSL link. (The
CD LED on the
front panel is off
for a long time.)

No power to router Perform the following steps:

1. Make sure that the power switch is set to ON.

2. Make sure that all connections to and from the power

supply are secure.

3. Make sure that the power outlet has power.

4. If the problem continues, the power supply might be

faulty. Contact your Cisco reseller.

A cable-related
problem:

• Improperly

connected cable.

• Damaged cable.

Perform the following steps:

1. To make sure that you have cabled the device

correctly, see the “Connecting a Terminal or PC to

the Router’s Console Port (Optional)” section on
page 2-15.

2. Make sure that the connectors at both ends of the

cable are securely seated.

3. Make sure that the cable is not physically damaged.

If it is damaged, order another cable from Cisco or
replace it with a similar cable.

Wrong cable

• To make sure that you are using the correct cable, see

Appendix A, “Specifications and Cables.”

Improperly connected
cable

• To make sure that you have connected the ADSL

cable properly, see the “Connecting an ADSL Line”

section on page 2-13.

• Make sure that the connectors at both ends of the

cable are securely seated.

Chapter 3 Troubleshooting

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Chapter 3 Troubleshooting

Problems After Router Is Running

Table 3-2 lists problems that could occur after the router has been up and running.

Table 3-2 Problems After Router Is Running

Symptom Problem Solutions

Problems with Ethernet
connection. (ETHERNET
LED 1, 2, 3, or 4 is off.)

Connection to the ADSL line
is intermittent or lost. (The CD
LED on the front panel is off.)

Connection to the ADSL line
or WAN port is loose. (The CD
LED and the ETHERNET
LED 1, 2, 3, or 4 on the front
panel are off).

A cable-related
problem:

• Disconnected

cable.

• Damaged cable.

A cable-related
problem:

• Disconnected

cable.

• Damaged cable.

Problem with ADSL
line or WAN service.

Perform the following steps:

1. Make sure that the connectors at both

ends of the cable are secure.

2. Make sure that the cable is not

physically damaged. If it is damaged,
order another cable from
Cisco Systems or replace it with a
similar cable.

• Make sure that the connectors are

secure at both ends of the cable.

• Make sure that the cable is not

physically damaged. If it is damaged,
order another cable from
Cisco Systems or replace it with a
similar cable.

Contact your ADSL line or WAN service
provider to determine whether there is a
problem with the ADSL or WAN service.

Problems After Router Is Running

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Problems After Router Is Running

Chapter 3 Troubleshooting

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APPENDIX

Specifications and Cables

This appendix provides system, port, and cabling specifications for the Cisco 837
and SOHO 97 routers.

System Specifications

Table A-1 outlines the system specifications for the routers.

Table A-1 System Specifications

Description Design Specification

Physical Dimensions

Dimensions (H x W x D) 2.0 x 9.7 x 8.5 in. (51 x 246 x 216 mm)

Weight (does not include desktop power supply) 1.48 lb. (0.67 kg)

Environmental Operating Ranges

Nonoperating temperature –4 to 149°F (–20 to 65°C)

Nonoperating humidity 5 to 95% relative humidity

Nonoperating altitude 0 to 15,000 ft (4570 m)

Operating temperature 32 to 104°F (0 to 40°C)

Operating humidity 10 to 85% relative humidity

Operating altitude 0 to 10,000 ft (3000 m)

A

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A-1

Appendix A Specifications and Cables

Port Connector Pinouts

Table A-1 System Specifications (continued)

Description Design Specification

Router Power

AC input voltage 100 to 240 VAC

Frequency 50 to 60 Hz

Power consumption Maximum of 18W

Voltage 18 VDC

For information on regulatory compliance, refer to the Regulatory Compliance
and Safety Information for Cisco 800 Series and SOHO Series Routers document
that shipped with your router.

Warning

Ultimate disposal of this product should be handled according to all national
laws and regulations.

Port Connector Pinouts

This section provides pinouts for the following connectors:

• Console (for connecting a terminal or PC)—See Ta ble A- 2 .

• ADSL—See Tab le A-3 .

Table A-2 Console Connector Pinouts (RJ-45)

Pin Function

1RTS

2DTR

3TXD

4GND

5GND

6RXD

A-2

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Appendix A Specifications and Cables

Table A-2 Console Connector Pinouts (RJ-45) (continued)

Pin Function

7DSR

8CTS

The console port is configured as a data communications equipment (DCE)
device. The default parameters for the console port are as follows:

• 9600 baud

• Eight data bits

• No parity

• One stop bit

Table A-3 shows ADSL connector pinouts for the Cisco 837 and SOHO 97

routers.

Table A-3 ADSL Connector Pinouts (RJ-11)

Port Connector Pinouts

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Pin Function

1 Loopback to pin 6

2Unused

3Tip

4Ring

5Unused

6 Loopback to pin 1

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A-3

Cabling Specifications

Cabling Specifications

This section provides specifications for the following Ethernet cables, which you
might need to provide:

• Straight-through cables

• Crossover cables

This section also provides information on the maximum cable distance that may
be used in connecting equipment to the router.

Ethernet Cable Specifications

Table A-4 lists the specifications for straight-through and crossover Ethernet

cables.

Table A-4 Ethernet Cable Specifications

Type Category

10BASE-T Category 3 or 5

100BASE-T Category 5 or above

Appendix A Specifications and Cables

Maximum Cable Distances

Table A-5 provides the maximum distance of Ethernet and telephone cables that

you can use to connect equipment to the router.

Table A-5 Maximum Cable Distance

Cable Maximum Distance

Ethernet and telephone cables 328 ft (100 m)

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INDEX

Numerics

10/100BASE-T 1-2

100BASE-T A-4

10BASE-T A-4

A

AC adapter, connecting 2-16

accessory kit 2-5

adapter, included 2-5

ADSL

line, connecting (figure)

port 1-2

altitude specifications (table) A-1

autosensing 1-1

2-13

B

cables and router damage 2-6

cabling distance, maximum (table) A-4

caution, defined x

Cisco Router Web Setup 2-21

connecting

AC adapter

console port to async modem 2-18

power supply 2-16

terminal or PC to console port 2-15

console port 1-2

conventions x

2-16

D

damage to the router, preventing 2-6

dial backup 1-1

documentation, included with router 2-5

dying gasp 1-2

back panel (figure) 1-5

C

cables

included with router

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2-5

E

electrostatic damage, preventing 2-4

encryption 1-1

Ethernet cable specifications A-4

European Union standards 2-6

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Index

F

feature summary 1-2

Flash memory 1-2

front panel (figure) 1-4

H

hardware-based encryption 1-1

humidity specifications A-1

I

installation

preparing for

verifying 2-20

IPSec Hardware Accelerator 1-3

2-1

N

note, defined x

P

PC configuration, checking 2-20

pinouts A-2

power

description

problems 3-2

power supply, connecting 2-16

preinstallation activities 2-5

problems

after router is running

during first startup 3-2

procedure for installing the router 2-10 to 2-17

A-2

3-3

L

LED functions (table) 1-6

M

mounting bracket 2-8

mounting router

table

2-7

wall 2-7

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IN-6

R

related documentation xii

router

unpacking

router damage, preventing 2-6

2-5, ?? to 2-5

S

safety warnings 2-2

SDRAM 1-2

software-based encryption 1-1

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specifications

cabling

A-4

system A-1

startup problems 3-2

straight-through cable 1-1

synchronous DRAM

see SDRAM

1-2

T

temperature specifications A-1

troubleshooting

after router is running

during first startup 3-2

3-3

Index

U

unpacking the router 2-5, ?? to 2-5

W

wall brackets (figure) 2-8

wall mounting 2-7, 2-9

warning, defined x

warnings, installation 2-2

weight specifications A-1

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Index

IN-8

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