Troubleshooting Techniques And Approaches - Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual

General Troubleshooting
This chapter describes general troubleshooting techniques you can use to troubleshoot routers using
Cisco IOS XR software. This chapter includes the following sections:
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Troubleshooting Techniques and Approaches

The following techniques and approaches are recommended when troubleshooting using
Cisco IOS XR software:
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OL-21483-02
Troubleshooting Techniques and Approaches, page 1-1
Verifying and Troubleshooting CLI Access, page 1-2
Basic Cisco IOS XR Verification and Troubleshooting Tools, page 1-7
Verifying the System, page 1-13
Validating and Troubleshooting Cisco IOS XR Software Package Installation, page 1-27
Validating and Troubleshooting Cisco IOS XR Software Configuration, page 1-35
ASIC Errors, page 1-49
Trace Commands, page 1-56
Packets, page 1-57
Logging Archive for Harddisk, page 1-60
SNMP Polling Awareness of SystemOwner, LR Owner, MIB Location, page 1-60
Error File Locations and Data Collection Scripts, page 1-60
Monitoring, page 1-66
Gathering Information for Technical Support, page 1-70
Maintain current documentation about the network. See the
page 1-2 for more information.
Maintain current documentation about the system, including chassis numbers, serial numbers,
installed cards, and location of chassis details.
Maintain diagrams illustrating the connectivity of the router control plane Ethernet network.
Capture and save the output of all commands. This information is useful when contacting
Cisco Technical Support. For information on contacting Cisco Technical Support, see the
"Obtaining Documentation and Submitting a Service Request" section on page viii
C H A P T E R
"Documenting the Network" section on
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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in the Preface.
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