Contents

 

Backup Interfaces

13-1

 

 

 

 

Configuring Backup Interfaces 13-2

 

Floating Static Routes

13-2

 

 

 

Configuring Floating Static Routes

13-3

 

Dialer Watch 13-4

 

 

 

 

 

Configuring Dialer Watch

13-4

 

 

Dial Backup Feature Limitations

13-5

 

 

Configuration Example

13-6

 

 

 

Configuring Dial Backup and Remote Management Through the ISDN S/T Port 13-9

 

Configure ISDN Settings

13-9

 

 

Configure the Aggregator and ISDN Peer Router 13-12

 

Configuring Dial Backup and Remote Management Through a V.92 Modem 13-13

 

Asynchronous Interface Configuration

13-13

 

Line Configuration

13-15

 

 

 

Troubleshooting

 

 

 

 

 

C H A P T E R 14

14-1

 

 

 

 

 

Getting Started

14-1

 

 

 

 

 

Before Contacting Cisco or Your Reseller

14-1

 

ADSL Troubleshooting

14-2

 

 

 

 

SHDSL Troubleshooting

14-2

 

 

 

PortFast Troubleshooting

14-2

 

 

 

ATM Troubleshooting Commands

14-3

 

 

ping atm interface Command

14-3

 

 

show interface Command 14-3

 

 

show atm interface Command

14-5

 

 

 

 

 

debug atm Commands

14-6

 

 

 

 

 

 

 

Guidelines for Using Debug Commands

14-6

 

 

 

 

debug atm errors Command

14-6

 

 

 

 

 

debug atm events Command

14-7

 

 

 

 

 

debug atm packet Command

14-8

 

 

 

 

 

Software Upgrade Methods

14-9

 

 

 

 

 

 

 

Recovering a Lost Password

14-9

 

 

 

 

 

 

 

Change the Configuration Register

14-10

 

 

 

 

 

Reset the Router

14-11

 

 

 

 

 

 

 

Reset the Password and Save Your Changes

14-12

 

 

 

 

Reset the Configuration Register Value 14-12

 

Managing Your Router with SDM

14-13

 

 

 

 

 

Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OL-6426-02

 

 

 

 

 

7

 

 

 

 

 

 

 

 

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Cisco Systems OL-6426-02 manual Configuring Backup Interfaces