1

While checking:

sh proc cpu history

there is high CPU utilization which occurs at a particular time.

closed as too broad by Ron Maupin Aug 7 '17 at 17:47

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

4

What is driving CPU usage in a Cisco switch is probably not a single end-device. Cisco switches can normally handle a full switching load without driving the CPU utilization unusually high. This is because the switching is largely handled in hardware.

The most likely cause is a service or protocol which the switch needs to handle in software. You didn't include the show processes cpu output, switch model, IOS version, and configuration. Without those, it is merely a guessing game.

Not the answer you're looking for? Browse other questions tagged or ask your own question.