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Cisco Bug: CSCte27874 - Supervisor CPU consistently at 90%, system slow to respond

Last Modified

Apr 10, 2018

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases


Description (partial)

CPU usage of the active supervisor is consistently around 90%. The `show process cpu` CLI 
command shows that the vrrp-eng process is the consumer:

  switch#  show process cpu | include vrrp-eng
  1675   2215685686  268836864  1565842753   94.3  vrrp-eng

This issue occurs when the active supervisor receives VRRP frames with IP Authentication Header 
(AH) type authentication.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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