High CPU Utilization caused by 802.1x

[davidssemanda]

Dear Cisco Community ,Kindly help , I'm seeing high CPU utilization and as per the stats it shows its caused by 802.1x .

Pls find attached logs and advice on what is the best solution to counter this

CPU utilization for five seconds: 97%/6%; one minute: 96%; five minutes: 97%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
196 709393542 14556454 48734 75.17% 74.90% 75.38% 0 802.1x switch
99 42220786 27085578 1558 4.15% 4.00% 4.04% 0 cpf_process_tpQ
407 24707546 14525299 1701 2.55% 2.62% 2.61% 0 SpanTree Helper
130 448734212 2279073278 0 2.55% 2.62% 2.62% 0 ACL deny punt se

Switch is running Below Version

Cisco IOS XE Software, Version 16.12.11
Cisco IOS Software [Gibraltar], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.12.11, RELEASE SOFTWARE (fc2).

Thanks 

[davidssemanda]

Dear All, i applied some fixes as you guys recommended and i havent noticed High CPU again . but now a new problem has emerged where the clients who have anyconnect software lose connection every after 1 or 2 hours of connectivity , i have checked the switch and seen no logs pertaining to Port flapping . what do u think may be the cause of this now?

[Leo Laohoo]

Are these clients connected to the same switch?  Switch member of the same stack?

[davidssemanda]

yes they are on the same switch 

[Leo Laohoo]

IF those wired clients are all connected to the same switch (from the same stack), then cold reboot that switch.  

Cold-reboot means pull out the power cables, pull out the power supplies.  Wait for about 20 seconds and push the power supplies back in.  Energize.