17 Troubleshooting for CPU high
Flowchart:
Check syslog
a. Verify frequency.
b. Is there any special log before CPU high?
c. Abnormal attack
Is it caused by management commands?
Some commands will cause the CPU high
a. Save configuration (Write memory)
b. Collect tech-support log
c. Sflow
Check port bandwidth
switch# show inte
rfaces <port id>
Check CPU queue
switch> bcm pw
Is there any traffic may cause CPU high?
a. A lot of IGMP request
b. ARP broadcast storms
c. Ethernet broadcast storms
d. SNMP polling
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