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Cisco Bug: CSCvu01759 - High CPU due to arp-ha on stby SUP

Last Modified

Sep 10, 2020

Products (2)

  • Cisco cBR Series Converged Broadband Routers
  • Cisco cBR-8 Converged Broadband Router

Known Affected Releases

16.7.1

Description (partial)

Symptom:
When in the console of the STBY supervisor,  seeing high CPU process of arpha
*
show proc cpu sort
Load for five secs: 100%/0%; one minute: 99%; five minutes: 100%
PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
Time source is NTP, 16:53:47.452 EDT Fri Apr 24 2020
 CPU utilization for five seconds: 100%/0%; one minute: 99%; five minutes: 100%
PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 122  4172015871   354987558      11752 91.46% 89.14% 89.33%   0 ARP HA   <----------

Conditions:
Problem seen in cbr8 running 16.7.4 and 16.12.1y code.
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