snmp causing high cpu util

[fredzahn]

We have been experiencing some of our 5400 series switches having high cpu utilization for long periods of time and it seems that is caused by snmpv3 being enabled.

Has anyone experienced this same issue.

[Chrisd131313]

I have experienced a strange issue today with a 2620. It has snmpv3 enabled and CPU was running up at 98%, which then caused the switch to reboot with a software error. After the reboot the cpu was still up at 98%. I disabled snmpv3 and then it dropped down to a more exceptable 10%, so not 100% sure it was snmpv3 that was causing the high utilisation, butI have just deployed 5 more 2620 that I will monitor to see if the same problem persists, all have snmpv3 enabled.