View CPU, memory usage of the switch
Show Process CPU
Show Memeory Summary
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If CPU utilization is high, the switch may be forwarding broadcast storms or worm packets
View utilization of all interfaces of the switch
Show int counter, global view of the interface's traffic conditions (clear counter first clears stale data)
Show int counter error, global view interface errors
Common parameter Descriptions
Outdiscard,output drops: The switch generates a large amount of data forwarding to the output interface, which exceeds the output queue cache of the interface, generates this error, which is generally normal, can increase the output interface cache or bandwidth to resolve
Input error, CRC error: usually due to network cable or to the end of the device failure.
Common Show commands for judging switch failures