We are using Cisco 3750 Switch at our site. its CPU will reach upto 85 to 90 %.
please let me know how to trouble shoot this issue. . and how to identify due to which reason its reaching to the high CPU. we have checked the sh process CPU command. but we are not able to understand exactly what happening. please let us know with the good solution.
I recommend you start by capturing the 'show process cpu sorted | ex 0.0' output. The output will look something like :
Router#sh proc cpu sorted | ex 0.0
CPU utilization for five seconds: 85%/83%.
The first number (85%) refers to the total CPU utilization at the moment. The second number (83%) refers to how much CPU utilization is interrupt-driven. If the difference between the first and second number is small the high CPU may be interrupt-based. The difference also identifies the amount of CPU used by software processes.
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