CHAPTER
9-1
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
9
Troubleshooting the Cisco IOS XR Software
This chapter describes the tools and procedures used to identify the source of hardware and software
problems. This information can be used to resolve the issue or refer to more specific troubleshooting
guides for help on a specific topic. This chapter also provides instructions on gathering data for further
analysis by Cisco customer support representatives.
Contents
This chapter contains the following sections:
• Additional Sources for Information, page 9-1
• Basic Troubleshooting Commands, page 9-2
• Understanding Processes and Threads, page 9-6
• Configuration Error Messages, page 9-13
• Memory Warnings in Configuration Sessions, page 9-14
• Interfaces Not Coming Up, page 9-20
Additional Sources for Information
For additional information on troubleshooting, refer to the following sources:
• The Technical Assistance Center (TAC) home page, containing 30,000 pages of searchable technical
content, including links to products, technologies, solutions, technical tips, and tools. Registered
Cisco.com users can log in from this page to access even more content.
http://www.cisco.com/public/support/tac/home.shtml
• The “Related Documents” section on page xii.
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