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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Preface
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS version 2.0.
OL-21483-02 October,
2010
(Continued from previous page)
• Chapter 5—Added a section on troubleshooting the line card optical interfaces
(pluggable-optics).
• Chapter 6—Added information on using online diagnostics to help troubleshoot the Ethernet
control plane.
• Chapter 7—Added CLI commands for displaying online diagnostics.
• Chapter 7—Added a note about online diagnostics behavior after an RP failover.
• Chapter 8—Added details on SNMP timeouts.
• Chapter 8—Added information on normal and abnormal causes of high CPU utilization.
• Chapter 10—Added clarifications regarding software and firmware upgrades.
OL-21483-01 December,
2009
Initial release of this document.
Table 1 Changes to This Document (continued)
Revision Date Change Summary
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