Troubleshooting guide

iii
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
CONTENTS
Preface xv
Purpose xv
Audience xv
Organization xvi
Related Documentation xvii
Conventions xviii
Obtaining Documentation xix
World Wide Web xix
Documentation CD-ROM xix
Ordering Documentation xix
Documentation Feedback xix
Obtaining Technical Assistance xx
Cisco.com xx
Technical Assistance Center xx
Contacting TAC by Using the Cisco TAC Website xxi
Contacting TAC by Telephone xxi
CHAPTER 1 Troubleshooting Overview 1-1
Using this Troubleshooting Guide 1-1
General Model of Problem Solving 1-2
Preparing for Network Failures 1-3
Troubleshooting General Problems 1-3
Troubleshooting Hardware and Booting Problems 1-4
Troubleshooting Ethernet Media Problems 1-4
Troubleshooting Console, Auxiliary Line, and Modem Problems 1-4
CHAPTER 2 Troubleshooting Tools 2-1
Using Diagnostic Commands 2-1
show Commands 2-1
Converted show epc Commands 2-2
debug Commands 2-3
ping Commands 2-3
traceroute Command 2-4