Cisco 1751V, 1751 Hardware Installation Manual

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Cisco 1751 Router Hardware Installation Guide

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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.

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Cisco 1751 Router Hardware Installation Guide

About This Guide ix

Audience and Scope x

Organization x

Related Publications xi

Conventions xi

Notes, Cautions, and Warnings xi Commands xiv

CONTENTS

CHAPTER

1 Cisco 1751 Router Overview 1-1

Key Features 1-2

Rear-Panel Ports and LEDs 1-4

Front-Panel LEDs 1-6

Router Memory 1-9

Types of Memory 1-9 Amounts of Memory 1-10

Unpacking the Router 1-11

Additional Required Equipment 1-11

2 Installation 2-1

Before Installing the Router 2-2

Connecting the Router to Your Local Network 2-3

Installing WICs and VICs 2-5

Safety Information 2-5

Connecting Power to the Router 2-8

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Verifying Your Installation 2-9

Optional Installation Steps 2-10

Connecting a PC 2-10 Connecting a Modem 2-11 Wall-Mounting 2-13

CHAPTER

APPENDIX

3 Troubleshooting 3-1

Contacting Cisco or Your Reseller 3-1

Recovering a Lost Password 3-2

Changing the Configuration Register 3-2 Resetting the Router 3-4 Resetting the Password 3-5 Resetting the Configuration Register Value 3-6

Problem Solving 3-6

OK LED Diagnostics 3-7 Troubleshooting WICs and VICs 3-7 Troubleshooting the Power System 3-11 Troubleshooting ISDN 3-12 Fan Behavior 3-14

A Technical Specifications A-1

APPENDIX

B Cabling Specifications B-1

Ethernet Cables B-1

Ethernet Network Cabling Guidelines B-2

Console Cable and Adapters B-3

VIC Cables and Pinouts B-5

Cables and Pinouts for 2-Port ISDN BRI Card B-7

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APPENDIX

C Installing and Upgrading Memory and Packet Voice Data Modules C-1

Safety Information C-1

Opening the Chassis C-3

Locating Modules C-5

Installing a Dual In-Line Memory Module C-6

Installing a Packet Voice Data Module C-7

Closing the Chassis C-9

D Installing the Virtual Private Network Module A-1

Before You Begin A-1

Tools and Equipment Required A-1 VPN Module Parts A-2 Safety Warnings A-2 Preventing Electrostatic Discharge Damage A-3

APPENDIX

NDEX

Installing the VPN Module in a Cisco 1751 Router A-4

Opening the Cisco 1751 Chassis A-4 Installing the VPN Module A-6 Closing the Cisco 1751 Chassis A-9

E Installing the Echo Canceler Expansion Modules on Cisco Interface

Cards

E-1

Multiflex Trunk Interface Cards E-1 Echo E-2 Echo Canceler Expansion Modules E-2 Installing and Configuring the Echo Canceler Expansion Modules E-3

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Contents

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About This Guide

This section discusses the intended audience, scope, and organization of the Cisco 1751 Router Hardware Installation Guide and defines the conventions used to convey instructions and information.

You can access Cisco documentation and additional literature on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar, and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.

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Cisco 1751 Router Hardware Installation Guide

Audience and Scope

This guide is for users who have some experience installing and maintaining networking hardware. We assume that Cisco 1751 router users are familiar with the terminology and concepts of local Ethernet and wide-area networking.

This guide describes the functional and physical features of the Cisco 1751 router and provides installation procedures, troubleshooting information, technical specifications, and cable and connector guidelines and specifications.

Organization

This guide is organized as follows:

• Chapter 1, “Cisco 1751 Router Overview,” describes the router features,

front-panel LEDs, rear-panel LEDs, and connectors.

About This Guide

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

cables, power, and install WAN interface cards (WICs) and voice interface cards (VICs).

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

with the router and how to solve these problems.

• Appendix A, “Technical Specifications,” lists the physical characteristics,

environmental requirements, and power specifications for the router.

• Appendix B, “Cabling Specifications,” lists the physical characteristics of the

cables and connectors used with the router.

• Appendix C, “Installing and Upgrading Memory and Packet Voice Data

Modules,” describes how to install or upgrade memory or data modules in

your router.

• Appendix D, “Installing the Virtual Private Network Module,” describes how

to install the Virtual Private Network (VPN) module in the router.

• Appendix E, “Installing the Echo Canceler Expansion Modules on Cisco

Interface Cards,”provides information about the echo canceler expansion

modules that are available for use on the 1-port RJ-48 T1/E1 multiflex trunk (VWIC2-1MFT-T1/E1), and on the 2-port RJ-48 T1/E1 multiflex trunk (VWIC2-2MFT-T1/E1) interface cards.

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About This Guide

Related Publications

The following publications provide related information on this product:

• Voice-over-IP Quick Start Guide that came with your router explains how to

install voice hardware and how to configure the router for a Voice-over-IP (VoIP) network.

• Cisco 1700 Router Software Configuration Guide describes some common

network scenarios and how to use the Cisco IOS command-line interface (CLI) to configure the router in these scenarios.

• Cisco 1751 Router Software Configuration Guide provides instructions on

how to use Cisco IOS software to configure voice interfaces and virtual LANs (VLANs).

• Cisco 1- and 2-port T1/E1 Multiflex Voice/WAN Interface Cards for the Cisco

1751 and 1760 Routers provides information about the Cisco 1-port and the Cisco 2-port multiflex trunk interface cards.

Related Publications

• Cisco WAN Interface Cards Hardware Installation Guide describes how to

install and configure the WICs and VICs that are supported by the Cisco 1751 router.

• Cisco IOS command reference and configuration guides provide complete

information about all Cisco IOS CLI commands and how to use them, as well as information on designing and configuring LANs and WANs.

Conventions

This guide uses the following conventions for instructions and information.

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.

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Cisco 1751 Router Hardware Installation Guide

Conventions

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

About This Guide

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

Warning

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 IAD.

Waarschuwing 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 bij7 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.

Varoitus 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).

Attention 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.

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About This Guide

Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation,

Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione

Conventions

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.

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.

Advarsel 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.

Aviso 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.

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xiii

Conventions

¡Advertencia! 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.

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.

About This Guide

Commands

Tabl e 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

Examples of information displayed on the screen.

boldface screen font Examples of information that you must enter.

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About This Guide

Conventions

Table 1 Command Syntax Guide

Convention Description

< > Nonprinting characters, such as passwords, appear in

angled brackets.

[ ] Default responses to system prompts appear in square

brackets.

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Conventions

About This Guide

Cisco 1751 Router Hardware Installation Guide

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CHAPTER

Cisco 1751 Router Overview

This chapter introduces the Cisco 1751 router, also referred to in this guide as the router, and covers the following topics:

• Key Features

• Rear-Panel Ports and LEDs

• Front-Panel LEDs

• Router Memory

• Unpacking the Router

• Additional Required Equipment

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Figure 1-1 shows the Cisco 1751 router.

Cisco 1751 Router Hardware Installation Guide

1-1

Key Features

Figure 1-1 Cisco 1751 Router

Chapter 1 Cisco 1751 Router Overview

46559

PWR

SLO

ETH

ACT

COL

Cisco 1700

SERIES

ROUTER

Key Features

The Cisco 1751 router is a voice-and-data capable router that provides Voice-over-IP functionality (VoIP) and can carry voice traffic (for example, telephone calls and faxes) over an IP network. Using one to four WAN connections, the router links small-to-medium-size remote Ethernet and FastEthernet LANs to central offices. Tab le 1 -1 lists the router key features.

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Chapter 1 Cisco 1751 Router Overview

Table 1-1 Key Features

Feature Description

Key Features

One FastEthernet (10/100BaseTX) port

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

override support).

• Supports autosensing for 10- or 100-Mbps operation (with

software override support).

Cisco interface cards

• Supports two slots for either WAN interface cards (WICs)

or voice interface cards (VICs).

• Supports one VIC-only slot.

• Supports the following WICs: ISDN BRI (U and S/T), 56-

or 64-kbps DSU/CSU, FT1/T1 DSU/CSU, WIC-1ADSL, WIC-1ENET (Ethernet), highspeed serial, dual-serial, and 2Async/Sync.

• Supports the following VICs: 2FXS, 2FXO, 2E&M,

F2XO-EU, 2FXO-M3, and 2-port ISDN Voice-BRI.

• Changes in WAN interface configuration can be made as

your network requirements change.

Console port Supports router configuration and management from a

connected terminal or PC. Supports up to 115.2 kbps.

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

configured and managed from a remote location. Supports up to 115.2 kbps.

Security slot Supports Kensington or similar lockdown equipment.

SNMP support Supports Simple Network Management Protocol (SNMP) to

manage the router over a network.

Vo I P, Vo F R, a nd Vo AT M s u p po r t S u p p o r t s Vo i c e o v e r I P, Vo i c e ov e r F r a me R el a y, a n d Voi c e

over ATM connections.

AutoInstall support Supports AutoInstall to download configuration files to the

router over a WAN connection.

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1-3

Chapter 1 Cisco 1751 Router Overview

Rear-Panel Ports and LEDs

Table 1-1 Key Features (continued)

Feature Description

Cisco ConfigMaker support Supports Cisco ConfigMaker application, a wizard-based

software tool, to configure a network that includes the Cisco 1751 router.

Cisco Voice Manager support Supports Cisco Voice Manager to help you install and operate

voice and fax services over the IP network.

Compatible with Cisco Networked

Stackable with other Cisco Networked Office stack products.

Office stack

Rear-Panel Ports and LEDs

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

Figure 1-2 and described in Tab le 1- 2 and Table 1-3.

Figure 1-2 Rear-Panel Components and LEDs

Kensington-compatible

locking socket

VIC 2FXS

WIC/VIC

slot 1

IN USE

SEE MANUAL BEFORE INSTALLATION

Console port

Model Cisco 1751

IN USE

10/100 ETHERNET

SLOT 1

SLOT 0

SLOT 2

CONSOLE

AUX

VIC 2FXO

VIC

slot 2

IN USE

SEE MANUAL BEFORE INSTALLATION

PVDM OK MOD OK

Power switch

IN USE

SLOT 2 OKFDXSLOT 0 OKSLOT 1 OK 100 LINK

THIS SLOT ACCEPTS ONLY VOICE INTERFACE CARDS

+5, +12, -12 VDC

46560

Slot 1

OK LED

Slot 0

OK LED

WIC/VIC

slot 0

FDX/100/LINK LEDs

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1-4

10/100-Mbps Ethernet port

Auxiliary port

Ground

wire

PVDM

OK LED

MOD

OK LED

Slot 2

Power socket

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Chapter 1 Cisco 1751 Router Overview

Table 1-2 Rear-Panel Connectors

Connector/Slot Label/Color Description

Rear-Panel Ports and LEDs

Ethernet port 10/100-Mbps

ETHERNET (yellow)

Router connection to the local Ethernet network. This port autosenses the speed (10 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

(light blue)

Modem connection for remote configuration using Cisco IOS software.

Terminal or PC connection for local configuration using Cisco IOS software.

WIC/VIC slot SLOT 0 Supports either a Cisco WIC or VIC. For detailed

information, refer to the Cisco WAN Interface Cards Hardware Installation Guide that comes with every card.

WIC/VIC slot SLOT 1 Supports either a Cisco WIC or VIC. For detailed

information, refer to the Cisco WAN Interface Cards Hardware Installation Guide that comes with every card.

VIC slot SLOT 2 Supports one Cisco VIC. For detailed information, refer

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

Power socket +5, +12, –12

VDC

Protective earth Ground wire Router connection to earth ground by using a green and

Use the rear-panel LEDs (see Table 1- 3) during router installation to confirm that you have correctly connected all cables to the router.

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Router connection to the external power supply.

yellow 14 AWG ground wire.

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Front-Panel LEDs

Chapter 1 Cisco 1751 Router Overview

Table 1-3 Rear Panel LEDs

LED Label Color Description

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

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

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

Off—Ethernet port is operating at 10 Mbps.

LINK Green On when the Ethernet link is up.

SLOT 0 OK Green On when either a WIC or VIC is correctly inserted in

the card slot.

SLOT 1 OK Green On when either a WIC or VIC is correctly inserted in

the card slot.

SLOT 2 OK Green On when a VIC is correctly inserted in the card slot.

PVDM OK Green On when a packet voice data module (PVDM) is

MOD OK Green On when a VPN module is present.

Front-Panel LEDs

Use the router front-panel LEDs to determine network activity and status on the Ethernet port and on the WIC and VIC ports. The front-panel LEDs are illustrated in Figure 1-3 and described in Table 1 -4.

Figure 1-3 Front-Panel LEDs

SLOT0

PWR

SLOT1

SLOT2

correctly inserted in the card slot.

ETH ACT

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COL

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Chapter 1 Cisco 1751 Router Overview

Front-Panel LEDs

Table 1-4 Front-Panel LEDs

LED Color Cards Supported LED Meaning

PWR Green – On when DC power is being supplied to the router.

OK Green – On when the router has successfully booted up and

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

Refer to Tab le 3- 1 in the “Troubleshooting” chapter for information on how to use this LED for router diagnostics.

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.

SLOTØ

Ø Green ISDN On when the first ISDN B channel is connected.

Serial and CSU/DSU Blinks when data is being sent to or received from

the port. For the VIC-2BRI-ST-NT/TE, blinks when

2-port serial

VIC-2E&M

data is being sent to or received from any of the B channels.

VIC-2FXO

VIC-2FXS

VIC-2BRI-ST-NT/TE

WIC1-ADSL

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Front-Panel LEDs

Table 1-4 Front-Panel LEDs (continued)

LED Color Cards Supported LED Meaning

1– Serial and CSU/DSUOff.

Green ISDN On when the first ISDN B channel is connected.

2-port serial Blinks when data is being sent to or received from

the port.

VIC-2E&M

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

SLOT1

Chapter 1 Cisco 1751 Router Overview

Ø Green ISDN On when the first ISDN B channel is connected.

Serial and CSU/DSU Blinks when data is being sent to or received from

the port.

2-port serial

VIC-2E&M

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

WIC1-ADSL

1– Serial and CSU/DSUOff.

Green ISDN On when the first ISDN B channel is connected.

2-port serial Blinks when data is being sent to or received from

the port.

VIC-2E&M

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

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Chapter 1 Cisco 1751 Router Overview

Router Memory

Table 1-4 Front-Panel LEDs (continued)

LED Color Cards Supported LED Meaning

SLOT2

Ø Green VIC-2E&M Blinks when data is being sent to or received from

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

1 Green VIC-2E&M Blinks when data is being sent to or received from

VIC-2FXO

VIC-2FXS

the port.

VIC-2BRI-NT/TE

Router Memory

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

For instructions on how to upgrade memory in the router, refer to the “Installing

and Upgrading Memory and Packet Voice Data Modules” appendix in this guide.

Types of Memory

The router has the following types of memory:

• Dynamic RAM (DRAM)—This is the main storage memory for the router.

DRAM is also called working storage and contains the dynamic configuration information. The router stores a working copy of Cisco IOS software, dynamic configuration information, and routing table information in DRAM. The Cisco 1751 router ships with 32 MB of DRAM.

• Nonvolatile RAM (NVRAM)—This type of memory contains the startup

configuration.

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1-9

Router Memory

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

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. The Cisco 1751 router ships with 32 MB of Flash memory and is not upgradeable.

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 shows the output of the show version command. The bold text displays the amount of memory stored in this router.

Router> show version Cisco Internetwork Operating System Software IOS (tm) C1700 Software (C1700-SV8Y7-M), Version 12.2(8)YN, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) Synched to technology version 12.2(11.2u)T TAC Support:http://www.cisco.com/tac Copyright (c) 1986-2002 by cisco Systems, Inc. Compiled Wed 30-Oct-02 11:07 by ealyon Image text-base:0x80008120, data-base:0x81329648

Chapter 1 Cisco 1751 Router Overview

1-10

ROM:System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1) ROM:C1700 Software (C1700-SV8Y7-M), Version 12.2(8)YN, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Router uptime is 0 minutes System returned to ROM by reload System image file is "flash:c1700-sv8y7-mz.122-8.YN"

cisco 1751 (MPC860P) processor (revision 0x200) with 55706K/9830K

bytes of memory.

Processor board ID JAD060409KG (290786369), with hardware revision 0000 MPC860P processor:part number 5, mask 2 Bridging software. X.25 software, Version 3.0.0. 1 FastEthernet/IEEE 802.3 interface(s) 2 ATM network interface(s) 2 Voice FXS interface(s)

32K bytes of non-volatile configuration memory. 32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x0

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Chapter 1 Cisco 1751 Router Overview

Unpacking the Router

Tabl e 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

Power cord (black)

•

• Power supply

• DB-25 to DB-9 adapter

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

• Product documentation

Unpacking the Router

Additional Required Equipment

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

Table 1-6 Additional Required Equipment

Equipment When You Use It

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

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

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

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

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

Phillips screwdriver to loosen the WIC and VIC cover.

Cisco WIC To make a WAN connection, the router must have a supported WIC

installed. The router supports up to two cards. You can either order the cards when ordering the router, and they will be installed for you, or you can order the cards separately, after receiving the router, and install them yourself.

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Chapter 1 Cisco 1751 Router Overview

Additional Required Equipment

Table 1-6 Additional Required Equipment (continued)

Equipment When You Use It

Cisco VIC To make a voice connection, the router must have a supported VIC

installed. The router supports up to three cards. You can either order the cards when ordering the router, and they will be installed for you, or you can order the cards separately, after receiving the router, and install them yourself. You must install digital signal processors (DSPs) to use VICs in the router.

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

This cable connects the router to the Ethernet LAN and the WICs to various WAN services, including ISDN, T1/FT1, and 56-kbps services. You will need one cable for each of these connections.

Standard RJ-11 telephone cable

This cable connects the VIC to a telephone, fax machine, or a telephone wall-jack. You will need one cable for each of these connections.

Standard RJ-48 telephone cable

This cable connects the VIC to a PBX trunk line. You will need one cable for each of these connections.

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

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

NT1 Some ISDN service providers require a Network Termination 1

device to connect an ISDN S/T port to the ISDN line.

Asynchronous modem To configure the router from a remote location, connect a modem to

the AUX port on the router.

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CHAPTER

Installation

This chapter provides the installation procedures for the router in the following sections:

• Before Installing the Router

• Connecting the Router to Your Local Network

• Installing WICs and VICs

• Connecting Power to the Router

• Verifying Your Installation

• Optional Installation Steps

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Before Installing the Router

The 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, refer to 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.

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.

This equipment needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth ground during normal use.

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.

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Chapter 2 Installation

Connecting the Router to Your Local Network

The 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

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

The ports labeled 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.)

10/100-Mbps Ethernet port

and

Console port

are safety

connect the cable to an ISDN S/T or U port on a WIC or to an NT1 that is connected to a WIC. Accidently connecting the cable to the wrong port can damage your router.

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

Step 1 Connect one end of the cable to the yellow Ethernet port (labeled 10/100-Mbps

Ethernet port).

Step 2 Connect the other end of the cable to a network port on the hub or switch.

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Connecting the Router to Your Local Network

Figure 2-1 Connecting the Router to the Local Network

VIC

IN USE

SEE MANUAL BEFORE INSTALLATION

L O

IN USE

Model Cisco 1751

T 1

CONSOLE

T 0

1 0

10/100

Ethernet port

Chapter 2 Installation

VIC

IN USE

2FXO

SEE MANUAL BEFORE INSTALLATION

AUX

IN USE

, +1

, -12

Ethernet hub or switch

(10, 100, or 10/100 Mbps)

2-4

Straight-through

Ethernet cable

Cisco 1751 Router Hardware Installation Guide

SPEED

100BaseTX

10BaseT

LED SOLID BLINK

2 3 4

5 6 7 8

1X 2X 3X 4X

10/100

5X 6X 7X 8X

MDI MDI-X

46563

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Chapter 2 Installation

Installing WICs and VICs

The router supports one to two Cisco WICs and one to three Cisco VICs. Each WIC has one or two WAN ports and each VIC has one or two voice ports. This section describes the procedure for installing a WIC or a VIC in the router.

Note For details on specific WICs and VICs, how to connect a WIC to the WAN line or

VIC to the telephone and fax 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 cards.

Safety Information

Installing WICs and VICs

Warning

This section lists safety warnings that you should be aware of before installing WICs or VICs in the router. To see translated versions of these warnings, refer to the Regulatory Compliance and Safety Information for the Cisco 1700 Routers document that came with the router.

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

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

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.

Warning

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Before opening the chassis, disconnect the telephone-network cables (from the card) to avoid contact with the telephone-network voltages.

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Installing WICs and VICs

Chapter 2 Installation

Warning

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

Caution Do not connect a WAN, telephone or fax cable to the card until you have

completed the installation procedure.

Follow these steps to remove and insert a card in the router:

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

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

in Figure 2-2.

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 a WIC or VIC Slot Cover

Interface card slot cover

Cisco 1751 Router Hardware Installation Guide

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IN USE

Model Cisco 1751

CONSOLE

10/100 ETHERNET

IN USE

+5, +12, -12 VD

46564

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Chapter 2 Installation

Step 3 Remove the metal plate that covers the card slot.

Step 4 Hold the card by the edges on either side of the card front panel, and line up the

Step 5 Insert the card in the slot and gently push it into the router until the front panel of

Step 6 Tighten the screws.

Installing WICs and VICs

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

the card is flush with the rear panel of the router.

Figure 2-3 Inserting a WIC or VIC in the Router

IN USE

SEE MANUAL BEFORE INSTALLATION

Interface card

Model Cisco 1750

SLO

T 1

OT 2

S LO

T 1 O

T 0 O

IN USE

Guides

T 0

100

LIN

10/100 ETHERNET

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

HIS SLO

CEP

NLY VO

INT

ERFA

VDM

SLO

T 2 O

, -

46565

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Connecting Power to the Router

Read the following warnings before connecting the power to the router.

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 needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth ground during normal use.

Follow these 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.

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.

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Chapter 2 Installation

Figure 2-4 Connecting the Power Supply

VIC

IN USE

2FXS

E M

IN USE

1 O

S L

odel Cisco 1750

S L

VIC 2FXO

D X

I N

H E

Verifying Your Installation

46566

IN USE

A N

IN USE

I O

+5, +12, -12 VDC

Separate

power cord

Power supply

Verifying Your Installation

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.

• 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).

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

Ethernet LAN.

Power socket

Attached

power supply cord

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2-9

Optional Installation Steps

• SLOTØ, SLOT1, and SLOT2 (front panel)—Activity on Ø and 1 of each of

these slots varies, depending on the type of WIC or VIC installed. Refer to

Tabl e 1-4 in the “Cisco 1751 Router Overview” chapter for detailed

information on activity at different ports.

• SLOT 0 and SLOT 1 OK (rear panel)—On when a WIC or VIC is correctly

installed in the slot.

• SLOT 2 OK (rear panel)—On when a VIC is correctly installed in the slot.

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

Ethernet LAN through the 10/100-Mbps Ethernet port.

Optional Installation Steps

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

Chapter 2 Installation

• Connecting a PC

• Connecting a Modem

• Wall-Mounting

Connecting a PC

If you want to configure the router through the Cisco IOS command-line interface (CLI), 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.

To configure the router with 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, 1 stop bit, no flow control. Refer to the Cisco 1700 Router Software Configuration Guide 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 light blue console cable to the blue Console port on the router, as

shown in Figure 2-5.

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Chapter 2 Installation

Step 2 Use the console adapter to connect the other end of the cable to the terminal or

Optional Installation Steps

PC. If your terminal or PC has a console port that does not fit the adapter included with the router, you must provide the correct adapter for that port.

Figure 2-5 Connecting the Console Cable to the Router

VIC

IN USE

2FXS

IN USE

1 O

0 O

100

LIN

Model Cisco 1750

T 1

CONSOLE

T 0

10/100 ETHERNET

T 2

VIC

IN USE

2FXO

IS S

IN USE

T A

AUX

T 2 O

, +

, -

46567

Light blue

console cable

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 light blue console cable that came in the accessory kit. If you are using the light blue cable with the console port, you can use any crossover RJ-45-to-RJ-45 cable.

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Console port

To PC or terminal

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Optional Installation Steps

Follow these steps to connect a modem to the router:

Step 1 Connect one end of the cable to the black AUX port on the router rear panel. (See

Figure 2-6.)

Step 2 Connect the adapter labeled Modem to the other end of the cable.

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

Figure 2-6 Connecting a Modem to the Router

Chapter 2 Installation

IN USE

L O

0 O

Modem cable

IN USE

F O

Model Cisco 1750

T IO

O T

IN USE

O T

E M

IN USE

0 0

O K

T A

IS S

T IO

PTS

LY VO

INTERF

ACE

S L

+5, +12, -12 VDC

46568

AUX port (RJ-45)

Modem

DB-9-to-DB-25 adapter

EIA/TIA-232

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Chapter 2 Installation

Wall-Mounting

The router can be wall-mounted using two number 6 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

Mounting

bracket

Bottom

of router

Mounting

bracket

Mounting bracket

3.75"

(9.52 cm)

Mounting bracket

12016

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Optional Installation Steps

Follow these steps 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 inches (0.64 centimeters) from the surface of the wall.

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

brackets so that

Chapter 2 Installation

• The LEDs are visible to the user. The LEDs indicate the router operating

status, so the LEDs should 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.

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CHAPTER

Troubleshooting

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

This chapter contains the following sections:

• Contacting Cisco or Your Reseller

• Recovering a Lost Password

• Problem Solving

Contacting Cisco or Your 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:

• Chassis type and serial number

• Maintenance agreement or warranty information

• Cisco IOS release 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 EXEC command

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3-1

Recovering a Lost Password

This section describes how to recover a lost enable or enable secret password. The process of recovering a password consists of the following major steps:

• Changing the Configuration Register

• Resetting the Router

• Resetting the Password (for lost enable secret passwords only)

• Resetting the Configuration Register Value

Note See the “Hot Tips” section on Cisco Connection Online (CCO) for additional

information on replacing enable secret passwords.

Chapter 3 Troubleshooting

Changing the Configuration Register

Follow these steps to change the configuration register:

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

console port on the rear panel of the router. Refer to the section “Connecting a

PC” in the “Installation” chapter.

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

1stopbit.

Step 3 Reboot the router by pressing the power switch to the off position, and then to the

on ( | ) position.

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

the existing configuration register value (shown in bold in this example output):

Router> show version

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-SV3Y7-M), Version 12.1(5)XA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) TAC:Home:SW:IOS:Specials for info Copyright (c) 1986-2000 by cisco Systems, Inc. Compiled Mon 02-Oct-00 19:28 by philuu

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Chapter 3 Troubleshooting

Image text-base: 0x800080DC, data-base: 0x80B7D7A0

ROM: System Bootstrap, Version 12.1(5r)T1, RELEASE SOFTWARE (fc1) ROM: C1700 Software (C1700-SV3Y7-M), Version 12.1(5)XA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Victrola_3B uptime is 23 hours, 54 minutes System returned to ROM by power-on Running default software

cisco 1751 (MPC860) processor (revision 0x5947) with 49152K/16384K bytes of memory. Processor board ID JAB30343106 (4266066989), with hardware revision 0000 M860 processor: part number 5, mask 1 Bridging software. X.25 software, Version 3.0.0. 1 FastEthernet/IEEE 802.3 interface(s) 6 Voice FXS interface(s) 32K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read/Write)

Recovering a Lost Password

Configuration register is 0x0

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

Step 6 Record the break setting.

• 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 the router off, 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.

Chapter 3 Troubleshooting

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

rommon 2>

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>

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

changes can be made only in this mode.

Router> enable

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Chapter 3 Troubleshooting

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

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

configuration:

Router# copy startup-config running-config

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

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

the steps in the next section, “Resetting the Configuration Register Value.”

Recovering a Lost Password

If you are recovering an enable secret password, you will not see the display in the show startup-config command output. Complete the password recovery process by performing the steps in the following “Resetting the Password” section.

Resetting the Password

Follow these steps to reset the password:

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 “Changing the Configuration Register” section earlier in this chapter.

Step 4 Press Ctrl-Z to exit configuration mode.

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Problem Solving

Router(config)# Ctrl-Z

Step 5 Save your configuration changes:

Router# copy running-config startup-config

Resetting the Configuration Register Value

Follow these steps once you have recovered or reconfigured a 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.

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 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.

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

• WICs and VICs—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 and VICs, refer to the Cisco WAN Interface Cards Hardware Installation Guide that comes with each card.

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

• 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.

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Chapter 3 Troubleshooting

• ISDN configuration—Consider ISDN-specific hardware and software

configurations (ISDN BRI WICs only).

OK LED Diagnostics

Use the front-panel OK LED to help 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 a different pattern (described in Table 3-1), depending on the problem. A pattern is 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.

Table 3-1 OK LED Blinking Patterns

Number of Blinks Meaning

Problem Solving

2 The 860P dual-port RAM (DPRAM) failed.

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

4 The 860P system protection control register has a write

failure.

5 The router cannot detect the dynamic RAM (DRAM).

6 The user programmable machine has a write failure.

9 The router DRAM failed.

Troubleshooting WICs and VICs

Use the show diag command to help determine problems with a card.

Router# show diag

Slot 0:

C1751 1FE VE DV Mainboard Port adapter, 7 ports Port adapter is analyzed Port adapter insertion time unknown EEPROM contents at hardware discovery: Hardware Revision : 89.71 PCB Serial Number : JAB30343106 Part Number : 73-5128-02 Fab Version : 04

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Problem Solving

Chapter 3 Troubleshooting

EEPROM format version 4 EEPROM contents (hex): 0x00: 04 FF 40 02 4D 41 59 47 C1 8B 4A 41 42 33 30 33 0x10: 34 33 31 30 36 82 49 14 08 02 02 04 FF FF FF FF 0x20: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 0x40: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

Packet Voice DSP Module Slot 0:

Hardware Revision : 2.2 Part Number : 73-3815-01 Board Revision : A0 Deviation Number : 0-0 Fab Version : 02 PCB Serial Number : ICP0339007X RMA Test History : 00 RMA Number : 0-0-0-0 RMA History : 00 Processor type : 02 Number of DSP's : 2 Type of DSP : TMS320C549 EEPROM format version 4 EEPROM contents (hex): 0x00: 04 FF 40 01 5B 41 02 02 82 49 0E E7 01 42 41 30 0x10: 80 00 00 00 00 02 02 C1 8B 49 43 50 30 33 33 39 0x20: 30 30 37 58 03 00 81 00 00 00 00 04 00 09 02 FF

3-8

Packet Voice DSP Module Slot 1:

Hardware Revision : 2.2 Part Number : 73-3741-01 Board Revision : A0 Deviation Number : 0-0 Fab Version : 02 PCB Serial Number : ICP0326001Y RMA Test History : 00 RMA Number : 0-0-0-0 RMA History : 00 Processor type : 02 Number of DSP's : 1 Type of DSP : TMS320C549 EEPROM format version 4 EEPROM contents (hex): 0x00: 04 FF 40 01 5A 41 02 02 82 49 0E 9D 01 42 41 30 0x10: 80 00 00 00 00 02 02 C1 8B 49 43 50 30 33 32 36 0x20: 30 30 31 59 03 00 81 00 00 00 00 04 00 09 02 FF

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Chapter 3 Troubleshooting

WIC Slot 0:

Dual FXS Voice Interface Card WAN daughter card Hardware revision 1.1 Board revision B0 Serial number 0019621219 Part number 800-02493-02 Test history 0x00 RMA number 00-00-00 Connector type WAN Module EEPROM format version 1 EEPROM contents (hex): 0x20: 01 0E 01 01 01 2B 65 63 50 09 BD 02 00 00 00 00 0x30: 58 00 00 00 00 05 15 01 FF FF FF FF FF FF FF FF

WIC Slot 1:

Dual FXS Voice Interface Card WAN daughter card Hardware revision 1.1 Board revision B0 Serial number 0019621176 Part number 800-02493-02 Test history 0x00 RMA number 00-00-00 Connector type WAN Module EEPROM format version 1 EEPROM contents (hex): 0x20: 01 0E 01 01 01 2B 65 38 50 09 BD 02 00 00 00 00 0x30: 58 00 00 00 00 05 15 01 FF FF FF FF FF FF FF FF

Problem Solving

WIC Slot 2:

Dual FXS Voice Interface Card WAN daughter card Hardware revision 1.1 Board revision B0 Serial number 0019621204 Part number 800-02493-02 Test history 0x00 RMA number 00-00-00 Connector type WAN Module EEPROM format version 1 EEPROM contents (hex): 0x20: 01 0E 01 01 01 2B 65 54 50 09 BD 02 00 00 00 00 0x30: 58 00 00 00 00 05 15 01 FF FF FF FF FF FF FF FF

The show diag command displays similar information for each port available on the router.

Tabl e 3-2 lists problems that could occur with the WICs and VICs and the

possible solutions of these problems.

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3-9

Problem Solving

Table 3-2 Troubleshooting WICs and VICs

Symptom Possible Solutions

Chapter 3 Troubleshooting

Router does not recognize the card.

Router recognizes the cards, but the card ports do not initialize.

Router does not boot properly or continuously or intermittently reboots.

Router does not boot or reset after the WIC or VIC is inserted.

• Confirm that the Cisco IOS release installed in the router

supports the WIC or VIC.

• Make sure you have a Cisco IOS feature set that supports voice.

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

• Make sure that the card is correctly installed in the router. Refer

to the “Installing WICs and VICs” section in the “Installation” chapter.

• Make sure that the card is correctly installed in the router. Refer

to the “Installing WICs and VICs” section in the “Installation” chapter.

• Check the external cable connections to make sure they are

secure.

Make sure that the WIC or VIC is correctly installed in the router. Refer to the “Installing WICs and VICs” section in the

“Installation” chapter.

There might be a short. Turn off the router immediately.

Router boots, but the console screen is frozen.

Cisco 1751 Router Hardware Installation Guide

3-10

• Make sure 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

–

1 stop bit

–

no flow control

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Chapter 3 Troubleshooting

Table 3-2 Troubleshooting WICs and VICs (continued)

Symptom Possible Solutions

Problem Solving

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

• Confirm that the Cisco IOS release installed in the router

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

each card.

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

Router powers on and boots only when a particular cable is

There might be a problem with the WIC or VIC cables. Consult your Cisco reseller for warranty information.

disconnected.

Troubleshooting the Power System

If the router external power supply fails, return it to your Cisco reseller. Tab le 3- 3 lists symptoms and possible solutions of power problems.

Table 3-3 Troubleshooting the Power System

Symptom Possible Solution(s)

Router shuts down after being on for a short time.

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

meets the environmental site requirements in the

“Technical Specifications” appendix in this guide and in

the “Site Requirements” section in the Regulatory Compliance and Safety Information for Cisco 1700 Routers document that came with your router.

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

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• Make sure nothing is blocking the fan vent on top of the

router.

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

failed.

The power supply has failed. Return the router to your Cisco reseller.

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Problem Solving

Table 3-3 Troubleshooting the Power System

Symptom Possible Solution(s)

Chapter 3 Troubleshooting

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.

Troubleshooting ISDN

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

Two commands are useful when 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 bri0/0 Router# clear interface bri1/0

The power supply has failed. Return the router to your Cisco reseller.

3-12

• 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

Tabl e 3-4 lists troubleshooting methods for ISDN-specific problems that might

occur.

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Chapter 3 Troubleshooting

Table 3-4 Troubleshooting ISDN

WIC Symptom Check the Following Possible Solution(s)

Problem Solving

ISDN S/T Router is on,

but the OK LED on the card is off.

ISDN U Router is on,

but the NT1 LED on the card is off.

Is the OK LED on the router front panel on?

If no, the router might be malfunctioning. Contact your Cisco reseller.

Are all ISDN cables properly connected?

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

Is the NT1 LED on? If no, the NT1 might be

malfunctioning.

Is the OK LED on? If no, the router might be

malfunctioning. Contact your Cisco reseller.

Are all ISDN cables properly connected?

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

Is the ISDN line connected to the card ISDN U port?

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

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3-13

Chapter 3 Troubleshooting

Problem Solving

Table 3-4 Troubleshooting ISDN (continued)

WIC Symptom Check the Following Possible Solution(s)

ISDN S/T or ISDN U

Card cannot make a connection to the remote router.

Use show isdn status command to check the following:

Does the current ISDN switch type match actual switch type being used?

Is Layer 1 status deactivated?

If Layer 1 status is active, does Layer 3 status say “2 Active Layer 3 calls”?

If Layer 1 status is active, does Layer 3 status say “No Active Layer 3 call(s)”?

Use the isdn switch-type command to configure correct switch type.

Use the show controller bri0 command to check for the messages CO RUNNING LOOPBACK TESTS or CO TESTING. If you receive these messages, contact the service provider.

Router might have called itself. Check destination phone number configured with the dialer map command or the dialer string command.

Check destination phone number and make sure it matches the remote router phone number. Check route to the destination and make sure it matches the remote router network address.

Fan Behavior

Under normal operation, the fan on the Cisco 1751 router is off. The fan turns on automatically, as required, to cool the system.

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3-14

If Layer 1 status is active, does Layer 3 status say “1 Active Layer 3 call”?

Check router protocol configurations.

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APPENDIX

Technical Specifications

Tabl e A-1 lists hardware and operating specifications for the Cisco 1751 router.

Table A-1 Router Specifications

Description Specification

Console port RJ-45

Auxiliary port RJ-45

Ethernet port RJ-45

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Dimensions

H x W x D 4 x 11.2 x 8.7 in. (10.16 x 28.45 x 22.10 cm)

Weight

Weight without interface cards

Weight with three interface cards

Power supply

External

On-board

Power consumption

3 lb (1.4 kg)

3.5 lb (1.75 kg)

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

Supplies 3.3V and –5V

18W

Cisco 1751 Router Hardware Installation Guide

A-1

Table A-1 Router Specifications (continued)

Description Specification

Operating Specifications

Appendix A Technical Specifications

Operating temperature

Storage temperature

Operating humidity

32 to 104°F (0 to 40°C)

–40 to 149°F (–20 to 65°C)

10 to 85%, noncondensing

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APPENDIX

Cabling Specifications

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

• Ethernet Cables

• Ethernet Network Cabling Guidelines

• Console Cable and Adapters

• VIC Cables and Pinouts

• Cables and Pinouts for 2-Port ISDN BRI Card

Note For detailed information about cables used with Cisco WICs and VICs, refer to

the Cisco WAN Interface Cards Hardware Installation Guide that comes with each of the cards.

Ethernet Cables

This section describes the Ethernet cables you use to connect the router to your local Ethernet network. A 10/100BaseTX router, like the Cisco 1751 router, requires Category 5 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable. Tabl e B-1 describes the pinouts for a RJ-45-to-RJ-45 Ethernet cable.

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B-1

Ethernet Network Cabling Guidelines

Table B-1 Straight-Through Ethernet Cable (RJ-45-to-RJ-45) Pinouts

Appendix B Cabling Specifications

RJ-45 Pin

Signal Direction RJ-45 Pin

1TX+—>1

2TX–—>2

3RX+<—3

6RX–<—6

1. Pins 4, 5, 7, and 8 are not used for signaling but to reduce radiated cable emissions.

Ethernet Network Cabling Guidelines

Tabl e B-2 describes guidelines for creating Ethernet networks. Figures might

vary, depending on the manufacturer of the network equipment.

Table B-2 Ethernet Cabling Guidelines

Specification 10BaseT 100BaseTX

Maximum segment length

100 meters 100 meters

B-2

Maximum number

5 of segments per network

Cisco 1751 Router Hardware Installation Guide

• With Class I

repeaters: 1

• With Class II

repeaters: 2

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Appendix B Cabling Specifications

Table B-2 Ethernet Cabling Guidelines (continued)

Specification 10BaseT 100BaseTX

Console Cable and Adapters

Maximum hop

count

Maximum number

4 • With Class I

1024 1024 of nodes per segment

Cable type required

UTP

Category 3, 4,

or 5

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

Console Cable and Adapters

A console cable kit is provided with your router. Use this kit when connecting your router to a PC or terminal.

repeaters: none

• With Class II

repeaters: 1

UTP Category 5 or STP

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The console cable kit contains:

• RJ-45-to-RJ-45 console cable (light blue)

• DB-9-to-RJ-45 console adapter

Tabl e B-3 describes the wiring for the console port, the console cable, and the

included adapters. This table also includes pinouts for a DB-9-to-RJ-45 console adapter.

Table B-3 Console Cable and Adapter Pinouts

Console (DTE)

Console Port

Console Cable Adapter Adapter

Terminal (DTE)

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

RTS1 8 85CTS

DTR2 7 66DSR

Cisco 1751 Router Hardware Installation Guide

B-3

Console Cable and Adapters

Table B-3 Console Cable and Adapter Pinouts (continued)

Appendix B Cabling Specifications

Console (DTE)

Console Port

Console Cable Adapter Adapter

Terminal (DTE)

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

TXD3 6 23RXD

GND 4 5 5 7 GND

GND 5 4 5 7 GND

RXD6 3 32TXD

DSR 7 2 4 20 DTR

CTS8 1 74RTS

Figure B-1 illustrates how to identify the console cable, which is also referred to

as the rollover cable.

Figure B-1 Identifying a Rollover Cable

Pin 1 on one connector and

pin 8 on the other connector

should be the same color.

B-4

Pin 1

Cisco 1751 Router Hardware Installation Guide

Pin 8

H10632

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Appendix B Cabling Specifications

VIC Cables and Pinouts

This section describes the VIC cables and pinouts for foreign exchange station (FXS), foreign exchange office (FXO), and E&M connectors. Use the following cables to connect the VICs to the network:

• Standard RJ-11 modular telephone cable to connect FXS VIC ports

(color-coded gray) to a telephone or fax machine.

• Standard RJ-11 modular telephone cable to connect FXO VIC ports

(color-coded pink) to the PSTN or to a PBX that does not support E&M signaling.

• Standard RJ-48S connector and cable to connect E&M VIC ports

(color-coded brown) to a PBX line. The cable wiring depends on the PBX type and connection. For details refer to the Cisco WAN Interface Cards Hardware Installation Guide.

VIC Cables and Pinouts

Figure B-2 shows how to connect the VICs to the network.

Figure B-2 Connecting VICs to the Network

FXS VIC

VIC

IN USE

FXS

1 0

SEE MANUAL BEFORE INSTALLATION

FXO VIC

VIC

IN USE

FXO

1 0

SEE MANUAL BEFORE INSTALLATION

E&M VIC

VIC

IN USE

E&M

1 0

SEE MANUAL BEFORE INSTALLATION

IN USE

PBX

10691

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B-5

VIC Cables and Pinouts

Note Pins that are not used should not be connected.

Appendix B Cabling Specifications

Tabl e B-4 lists the pinouts for FXS and FXO VIC connectors.

Table B-4 RJ-11 Pinouts

Pin Signal

1–

2–

3Ring

4Tip

5–

6–

The E&M VIC pinout depends on the PBX type and connection. Tab le B -5 lists the pinouts for this connector.

Note Pins that are not used should not be connected.

Table B-5 E&M Pinouts

Pin Signal Description

1 SB –48V signaling battery

2 M-lead Signaling input

3 R Ring, audio input

4 R or R1 Ring, audio input/output,

or output

5 T or T1 Tip, audio input/output,

or output

6 T Tip, audio input

7 E-lead Signaling output

8 SG Signaling ground return

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B-6

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Appendix B Cabling Specifications

Cables and Pinouts for 2-Port ISDN BRI Card

Use the straight-through RJ-45 cable to connect the 2-port ISDN BRI card to an ISDN network through a telephone wall outlet or other device.

Note When the interface is configured as NT and is connecting to a TE device, the cable

must have the transmit and receive pins swapped (crossover cable). (See Tab le 6.)

Table 6 Interface Pin Numbers and Functions

ISDN BRI NT/TE

NT Interface (use straight-through cable)

TE Interface (use crossover cable)

Pin 3/T+ Pin 3/R+ Pin 3/T+

Pin 4/R+ Pin 4/T+ Pin 4/R+

Pin 5/R- Pin 5/T- Pin 5/R-

Pin 6/T- Pin 6/R- Pin 6/T-

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B-7

Cables and Pinouts for 2-Port ISDN BRI Card

Appendix B Cabling Specifications

Cisco 1751 Router Hardware Installation Guide

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APPENDIX

Installing and Upgrading Memory and Packet Voice Data Modules

This chapter describes how to install or upgrade memory or data modules in your router and contains the following sections:

• Opening the Chassis

• Locating Modules

• Installing a Dual In-Line Memory Module

• Installing a Packet Voice Data Module

• Closing the Chassis

Safety Information

This section contains safety information that you should read before installing or upgrading memory in the router.

Warning

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

Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages.

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C-1

Safety Information

Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Warning

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

lightning activity.

Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected.

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

C-2

Warning

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.

Warning

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.

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Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Opening the Chassis

To install or upgrade memory or data modules, 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 on page C-4.

Step 4 Turn the router back to its original position (right-side up).

Opening the Chassis

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C-3

Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Opening the Chassis

Figure C-1 Removing the Chassis Screws

Number 1 Phillips screwdriver

+5, +12, -12 VDC

SLOT 2 OK

MOD OK

PTS

PVDM OK

TION

IN USE

STALLA

RE IN

AL BE

EE MA

Rear panel

NSO

LINK

100

FDX

SLOT 0

SLOT 1

Model Cisco 1751

IN USE

INSTALLATIO

SLOT 0 OK

SLOT 1 OK

EFO

L B

SEE M

IN USE

46569

IN USE

SLOT 2

Top of router

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, 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 Packet Voice Data Modules

Locating Modules

Figure C-2 shows where to install a dual in-line memory module (DIMM) and

packet voice data modules (PVDMs) on the motherboard.

Figure C-2 Cisco 1751 Motherboard—Module Locations

WIC/VIC slot 1 (top)

VIC slot 2 Fan connector

WIC/VIC slot 0 (bottom)

Locating Modules

DIMM slot

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PVDM slot

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Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Installing a Dual In-Line Memory Module

You can install a dual in-line memory module (DIMM) to increase the amount of dynamic RAM (DRAM) in the router. DIMMs are available in the following sizes:

• 16 MB

• 32 MB

• 64 MB

The router memory size is displayed using the show version command. This command is described in the “Amounts of Memory” section of the “Cisco 1751

Router Overview” chapter.

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

Warning

Step 1 Locate the DIMM slot on the motherboard, shown in Figure C-2.

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

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.

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

Step 3 Hold the replacement DIMM with the notched edge away from you and facing the

router.

Step 4 Insert the DIMM into the DIMM slot, making sure that the notches on the edge of

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

Step 5 Press the DIMM firmly into the slot until the 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 Packet Voice Data Modules

Figure C-3 Installing a DIMM

DIMM module

Installing a Packet Voice Data Module

DIMM slot

DIMM slot guides

Installing a Packet Voice Data Module

You can install up to two packet voice data modules (PVDMs) to support enhanced versions of digital signal processors (DSPs).

There are five types of PVDMs:

• PVDM-4—Supports one DSP

• PVDM-8—Supports up to two DSPs

• PVDM-12—Supports up to three DSPs

46558

• PVDM-16—Supports up the four DSPs

• PVDM-20—Supports up to five DSPs

Each DSP supports two analog voice ports or one ISDN BRI port. Each analog VIC used with the Cisco 1751 router has two voice ports and requires a single DSP. The 2-port ISDN Voice-BRI requires two DSPs. Table C-1 shows the possible combinations of PVDMs and voice ports for the Cisco 1751 router.

The Cisco 1751 router has two PVDM slots. Any of the PVDMs can occupy either slot. The total number of DSPs provided by one or two PVDMs installed in those slots must be greater than or equal to the number of DSPs required by the number and type of VICs installed, as described in Tabl e C-1.

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Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Installing a Packet Voice Data Module

For example, if you have one PVDM (a single DSP), and you ant to increase the number of DSPs to 3, you can either add a PVDM-8 in the second slot, or you can replace the PVDM-4 with a PVDM-12.

Table C-1 PVDM and VIC Combinations

Number

PVDM

of DSPs Supported VIC Combinations

PVDM-4 1 1 analog VIC

PVDM-8 2 Up to 2 analog VICs or

1 voice-BRI VIC

PVDM-12 3 Up to 3 analog VICs or

1 analog VIC + 1 voice-BRI VIC

PVDM-16 4 Up to 3 analog VICs or

Up to 2 voice-BRI VICs or Up to 2 analog VICs + 1 voice-BRI VIC

PVDM-20 5 Up to 3 analog VICs or

Up to 2 voice-BRI VICs or Up to 2 analog VICs + 1 voice-BRI VIC or 1 analog VIC + up to 2 voice-BRI VICs

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

Warning

Step 1 Locate the PVDM slots on the motherboard. (See Figure C-2.)

Step 2 Remove any existing PVDMs by pulling the PVDM snaps away from the PVDM.

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.

(See Figure C-4.)

Step 3 Hold the replacement PVDM with the double-notched edge on your left.

Step 4 Insert the PVDM into the PVDM slot, making sure that the notches on the edge

of the PVDM are inserted over the bars inside the PVDM slot. (See Figure C-4.)

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Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

Step 5 Push the module towards the slot and press firmly until you hear a clicking sound,

and the module is firmly seated in the slot. Make sure that the snaps on both ends of the PVDM are engaged. (See Figure C-4.)

Figure C-4 Installing a PVDM

PVDM module

Closing the Chassis

PVDM snaps

PVDM slot

Closing the Chassis

After installing memory or data modules 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 the

corresponding openings on the chassis bottom.

Step 3 Line up the posts with the corresponding openings, as shown in Figure C-5, and

carefully slide the posts into the openings. Be careful not to damage the router motherboard with the posts.

Step 4 Replace the screws that you removed when opening the chassis. (See Figure C-1.)

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C-9

Closing the Chassis

Figure C-5 Closing the Chassis

Appendix C Installing and Upgrading Memory and Packet Voice Data Modules

VIC 2FXS

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

VIC 2FXO

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

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Installing the Virtual Private Network Module

This chapter describes how to install the Virtual Private Network (VPN) module in your Cisco 1751 router.

Before You Begin

This section describes important safety information and the tools required to install the VPN module. Read this section before installing the VPN module in a Cisco 1751 router.

APPENDIX

Tools and Equipment Required

The following items are required to install the VPN module:

• Number 1 Phillips screwdriver

• VPN module and associated parts

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D-1

Before You Begin

VPN Module Parts

Included with the VPN module are the following parts required for installation:

• Two metal standoffs

• Four screws

Safety Warnings

Appendix D Installing the Virtual Private Network Module

Warning

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

Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages.

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

Warning

Cisco 1751 Router Hardware Installation Guide

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

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

D-2

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Appendix D Installing the Virtual Private Network Module

Before You Begin

Warning

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

Preventing Electrostatic Discharge Damage

Before installing a VPN module, read the electrostatic discharge (ESD) instructions in this section. ESD is a discharge of stored static electricity that can damage equipment and impair electrical circuitry. It occurs when electronic components are improperly handled and can result in complete or intermittent failures.

Following are guidelines for preventing ESD damage:

• Before opening the chassis, turn the router power switch to off ( O ).

• Disconnect the power cable to the router.

• Always use an ESD-preventive wrist or ankle strap and ensure that it makes

good skin contact.

• Avoid contact between equipment and clothing. The wrist or ankle strap

protects the equipment only from ESD voltages on the body; ESD voltages on clothing can still cause damage.

• Handle printed circuit cards by the edges only; avoid touching the

components, traces, or any connector pins.

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D-3

Installing the VPN Module in a Cisco 1751 Router

• Place a removed card component on an antistatic surface or in a static

shielding bag.

• Do not remove the wrist or ankle strap until the installation is complete.

Caution To avoid damaging the equipment, periodically check the resistance value of the

antistatic strap. The measurement should be between 1 and 10 megohms (Mohms).

Appendix D Installing the Virtual Private Network Module

Warning

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.

Installing the VPN Module in a Cisco 1751 Router

This section describes how to install the VPN module in a Cisco 1751 router. It contains the following sections:

• Opening the Cisco 1751 Chassis

• Installing the VPN Module

• Closing the Cisco 1751 Chassis

Opening the Cisco 1751 Chassis

To install the VPN module, 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 D-1.

Cisco 1751 Router Hardware Installation Guide

D-4

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Appendix D Installing the Virtual Private Network Module

Figure D-1 Removing the Cisco 1751 Chassis Screws

Number 1 Phillips screwdriver

Installing the VPN Module in a Cisco 1751 Router

+5, +12, -12 VDC

SLOT 2 OK

MOD OK

ICE

IS S

PVDM OK

IN USE

BEFORE INSTALLATION

ANUAL

SEE M

IN USE

Rear panel

AUX

LINK

SLOT 2

100

FDX

SLOT 0

SLOT 1

Model Cisco 1751

IN USE

RE INSTALLATION

EFO

SLOT 0 OK

SLOT 1 OK

UAL B

E M

IN USE

46569

Top of router

Step 4

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

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

of the router.

At this point, 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.

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D-5

Installing the VPN Module in a Cisco 1751 Router

Step 6 Place the router bottom on an antistatic mat and begin installing the VPN module.

Installing the VPN Module

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

Step 1 The VPN module plugs into a socket, as shown in Figure D-2.

Step 2 Using two of the screws provided, attach the standoffs to the 1751 motherboard.

a. Locate the holes in the motherboard.

Figure D-2 Cisco 1751 Standoff Location

Appendix D Installing the Virtual Private Network Module

Motherboard

standoff holes

VPN module

socket

Turn the motherboard over and attach the standoffs to it using two of the screws provided as shown in Figure D-3.

50192

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D-6

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Appendix D Installing the Virtual Private Network Module

Figure D-3 Securing the Standoff to the 1751 Motherboard

Installing the VPN Module in a Cisco 1751 Router

Step 3

50191

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

Figure D-4.

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D-7

Appendix D Installing the Virtual Private Network Module

Installing the VPN Module in a Cisco 1751 Router

Figure D-4 Cisco 1751 Motherboard—VPN Module Location

50190

D-8

Step 4 Pushing down with both thumbs as shown in Figure D-5, plug the VPN module

into the socket.

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Appendix D Installing the Virtual Private Network Module

Figure D-5 Seating the VPN Module

Installing the VPN Module in a Cisco 1751 Router

50189

Step 5

Using the two remaining screws, secure the standoffs to the VPN module.

Closing the Cisco 1751 Chassis

After installing the 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 Cisco 1751 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 the

corresponding openings on the chassis bottom.

Step 3 Line up the posts with the corresponding openings, as shown in Figure D-6, and

carefully slide the posts into the openings. Be careful not to damage the router motherboard with the posts.

Step 4 Replace the screws that you removed when opening the chassis. (See Figure D-1.)

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D-9

Installing the VPN Module in a Cisco 1751 Router

Figure D-6 Closing the Cisco 1751 Chassis

Appendix D Installing the Virtual Private Network Module

VIC 2FXS

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

VIC 2FXO

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

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Installing the Echo Canceler Expansion Modules on Cisco Interface Cards

This chapter provides information about the hardware-based echo canceler expansion modules that are available on the enhanced multiflex trunk interface cards on the Cisco 1751 router.

Multiflex Trunk Interface Cards

APPENDIX

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The following multiflex trunk interface cards on the Cisco 1751 support hardware-based echo cancellation features through an optional echo canceler expansion module installed on the main board of the interface card:

• 1-Port RJ-48 Multiflex Trunk T1/E1—VWIC2-1MFT-T1/E1, with

voice-only support

• 2-Port RJ-48 Multiflex Trunk T1/E1—VWIC2-2MFT-T1/E1, with

voice-only support

Note For additional information about the Cisco 1- and 2-port T1/E1

multiflex trunk interface cards, refer to the Cisco 1- and 2-port

T1/E1 Multiflex Voice/WAN Interface Cards for the Cisco 1751 and 1760 Routers.

Cisco 1751 Router Hardware Installation Guide

E-1

Echo

Appendix E Installing the Echo Canceler Expansion Modules on Cisco Interface Cards

Echo occurs when the speech energy being generated and transmitted down the signal path is coupled into the receive path from the far end. This causes a speaker to hear the sound of his or her own voice, delayed by the total echo path delay time.

In a traditional voice network, voice can reflect back, but it usually goes unnoticed because the delay is so low. In a Voice over IP (VoIP) network, echo is more noticeable because packetization and compression contribute to delay.

Echo cancellation technology is a functional component of a voice gateway that is used to reduce the effects of echo. An echo canceler monitors a caller’s speech. If that caller’s speech echoes, the echo canceler generates and transmits a signal that is sent back to the caller to cancel out the echo. The amount of time that it takes the echo canceler to locate the echo and to generate its opposite signal is called convergence time (typically, a few seconds). During convergence, the caller hears echo, which should gradually decrease in amplitude to zero when convergence is complete.

For additional information about echo and echo cancellation, refer to Echo

Analysis for Voice over IP.

Echo Canceler Expansion Modules

The echo canceler expansion modules are user-installable, plug-in modules. The expansion modules provide a hardware-based echo cancellation feature that simultaneously offloads the work of the DSPs on the Signal Processing Mini-Module (SPMM) on the motherboard. By offloading this processing, hardware-based echo cancellation results in more robust echo cancellation.

The echo canceler expansion modules enable high performance hardware-based echo cancellation for up to 64 voice calls.

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E-2

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Appendix E Installing the Echo Canceler Expansion Modules on Cisco Interface Cards

The following echo canceler expansion modules are available for voice-only support on the 1-port RJ-48 multiflex trunk T1/E1 (VWIC2-1MFT-T1/E1) and on the 2-port RJ-48 multiflex trunk T1/E1(VWIC2-2MFT-T1/E1) interface cards on the Cisco 1751 router.

• 32-channel echo canceler expansion module for multiflex trunk

(EC-MFT-32)

• 64-channel echo canceler expansion module for multiflex trunk

(EC-MFT-64)

Installing and Configuring the Echo Canceler Expansion Modules

For information about installing the echo canceler expansion modules on the 1-port RJ-48 T1/E1 multiflex trunk and on the 2-port RJ-48 T1/E1 multiflex trunk interface cards, refer to the Installing Echo Canceler Expansion Modules on Cisco

Interface Cards.

For detailed information about configuring 1- and 2-port multiflex trunk interface cards with echo cancellation, refer to T1/E1 Multiflex Voice/WAN Interface Cards

with Echo Cancellation Module.

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E-3

Appendix E Installing the Echo Canceler Expansion Modules on Cisco Interface Cards

Cisco 1751 Router Hardware Installation Guide

E-4

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INDEX

accessory kit 1-11

adapter, included 1-11

adapters

console

B-3

audience x

AutoInstall support 1-3

auxiliary port

connecting

2-12

featured 1-3

illustrated 1-4

specifications A-1

included with router 1-11

required 1-11

rollover B-4

serial 1-12

specifications B-1

VIC B-5

caution described xii

chassis

closing

C-9, A-9

dimensions A-1

opening C-3, A-4

Cisco, contacts 3-1

Cisco ConfigMaker support 1-4

Cisco Networked office stack 1-4

clear-controller command 3-12

clear-interface command 3-12

break, sending to router 3-4

cables

2-port ISDN BRI card

and rear-panel LEDs 1-6

console 2-10, B-3

Ethernet 2-3, B-1

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B-7

closing chassis C-9, A-9

command conventions xiv

commands

clear controller

3-12

clear interface 3-12

config-register 3-6

configure terminal 3-5

copy 3-6

dialer map 3-14

Cisco 1751 Router Hardware Installation Guide

IN-1

Index

dialer string 3-14

enable 3-4

enable secret 3-5

isdn switch-type 3-14

reset 3-4

show controller 3-14

show isdn status 3-14

show startup-config 3-5

show tech-support 3-1

show version 1-10, 3-2, C-6

ConfigMaker support 1-4

configuration register

resetting

3-2, 3-4, 3-6

configure-terminal command 3-5

connecting

copy command 3-6

dialer-map command 3-14

dialer-string command 3-14

digital signal processor C-7

DIMM

installing

locating on router C-5

documentation

included

DRAM overview 1-9

DSP C-7

C-6

router to a modem

2-11

router to a PC 2-10

router to local network 2-3

router to power 2-8

connectors, rear panel 1-5

console port

connecting

2-10

featured 1-3, 1-5

illustrated 1-4

specifications A-1

contacts, Cisco and reseller 3-1

conventions

command

xiv

text xi

E&M VIC port B-5

echo

cancellation

definition E-2

echo canceler expansion modules E-1, E-2

enable command 3-4

enable password, recovering 3-2

enable-secret password, recovering 3-5

equipment, required 1-11

ETH ACT LED 1-7

ETH COL LED 1-7

Ethernet cable

E-2

Cisco 1751 Router Hardware Installation Guide

IN-2

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Index

connecting 2-3

network requirements B-2

pinouts B-1

Ethernet hub

connecting to

2-3

required 1-11

Ethernet port

connecting

2-3

featured 1-3

illustrated 1-4

specifications A-1

Ethernet switch

connecting to

2-3

required 1-11

ground wire 1-5

hardware specifications A-1

indicators

see LEDs

installation

equipment you provide

router 2-2

1-11

fax support 1-4

features, key 1-2

Flash memory

locating on router

overview 1-10

front panel

illustrated

LEDs 1-6

FXO VIC port B-5

FXS VIC port B-5

1-6

C-5

verifying using LEDs 2-9

installing

DIMM

C-6

memory C-1

PVDM C-7

voice interface cards 2-5

wall-mounting 2-5

WAN interface cards 2-5

interface cards, featured 1-3

IOS

Cisco 1751V, 1751 Hardware Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual