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A %SYS-3-CPUHOG error message is displayed on a Cisco router

Core Issue

Causes for the error message include bootup processes, Online Insertion and Removal (OIR) events, attempting to access a bad or missing Flash device, or a Cisco IOS  Software bug.


The severity of the error depends on the cause. In some cases, no action is required. In other cases, a configuration change or an upgrade may be necessary. For more information on the %SYS-3-CPUHOG error message as well as troubleshooting  steps, refer to What  Causes %SYS-3-CPUHOG Messages?.

Version history
Revision #:
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Last update:
‎06-18-2009 04:01 PM
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