Troubleshooting guide

Contents
iv
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Third-Party Troubleshooting Tools 2-4
Volt-Ohm Meters, Digital Multimeters, and Cable Testers 2-5
TDRs and OTDRs 2-5
Network Monitors 2-5
Network Analyzers 2-6
CHAPTER 3 Initial Troubleshooting 3-1
Online Diagnostics 3-1
Processor Loopback Test (Catalyst 8540 CSR) 3-1
Accessibility Test 3-2
OIR Test 3-2
Snake Test 3-2
Configuring Online Diagnostics (Catalyst 8540 CSR) 3-2
Displaying the Online Diagnostics Configuration and Results (Catalyst 8540 CSR) 3-3
Checking DDTs Database and Release Notes for Workarounds 3-5
Using Bug Toolkit 3-5
Searching for Bugs Using the Bug ID 3-6
Searching for Bugs Using the Software and Hardware Product Name 3-6
Checking IOS Release Notes 3-7
Troubleshooting Hardware and Software Version Problems 3-7
Verifying Hardware and Software Versions 3-8
Finding the Image 3-11
IOS Upgrade Procedures 3-12
Modifying, Downloading, and Maintaining System Images 3-12
Maintaining Functional Images 3-12
Understanding Functional Images 3-12
FPGA Upgrade Procedures 3-12
Troubleshooting Processor Redundancy and EHSA (Catalyst 8540 CSR and Catalyst 8540 MSR) 3-13
Route Processor Redundant Operation (Catalyst 8540 CSR and Catalyst 8540 MSR) 3-14
Troubleshooting Route Processor Redundancy (Catalyst 8540 CSR and Catalyst 8540 MSR) 3-14
Troubleshooting Hardware and Software Versions of Redundant Route Processors 3-15
Troubleshoot Redundant Route Processor Functions 3-17
Troubleshooting Switch Processor Redundancy with HSRP (Catalyst 8540 CSR and
Catalyst 8540 MSR)
3-18
CHAPTER 4 Example Network 4-1
Network Hierarchy 4-1
Example Networks 4-2
Example ATM Network 4-2