Cisco 2600XM Series Installation Guide download pdf (Page 2)

Hardware Troubleshooting for the Cisco 2600

Series Router

Interactive: This document offers customized analysis of your Cisco

device.

Introduction

Prerequisites

Requirements

Hardware−Software Compatibility and Memory Requirements

Error Messages

Conventions

Modules and Cards

Troubleshooting Modem Modules

Identifying the Issue

Troubleshooting Serial Interfaces

Troubleshooting ISDN Interfaces

Troubleshooting Memory Problems

Troubleshooting Router Hangs

Router Reboot/Reload

Router Crashes

Bus Error Crashes

Continuous/Boot Loop

Identifying a Continuous/Boot Loop Due to a Wrong Iomem Size

Troubleshooting Flowchart

Bus Error Exception

SegV Exception

%ERR−1−GT64010

Corrupt Software Image

Watchdog Timeouts

Router Does Not Boot

LEDs on after powerup; nothing on console

Router boots to ROMmon; no error messages on the console

Router boots to ROMmon; error messages on the console

Router stops booting after receiving error message

Router Is Dropping Packets

Ethernet Interfaces

Ignored Packets

Input and Output Queue Drops

Router Loses Configuration due to Faulty or Corrupt NVRAM

Information to Collect if You Open a TAC Service Request

Related Information

Introduction

Valuable time and resources are often wasted replacing hardware that actually functions properly. This

document helps troubleshoot potential hardware issues with Cisco 2600 series routers, and can help you

identify which component may be causing a hardware failure, depending on the type of error that the router is

experiencing.

Cisco − Hardware Troubleshooting for the Cisco 2600 Series Router

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Cisco 2600XM Series Installation Guide Page 2

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