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Cisco Bug: CSCum25362 - IPS: Failover occurs during an IPS config change

Last Modified

Feb 23, 2018

Products (17)

  • Cisco IPS 4200 Series Sensors
  • Cisco IPS 4255 Sensor
  • Cisco IPS 4260 Sensor
  • Cisco ASA 5555-X IPS Security Services Processor
  • Cisco IPS 4270-20 Sensor
  • Cisco IPS 4345 Sensor
  • Cisco IPS 4520 Sensor
  • Cisco IPS 4240 Sensor
  • Cisco ASA 5525-X IPS Security Services Processor
  • Cisco IPS 4510 Sensor
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Known Affected Releases


Description (partial)

A data-plane failover occurs with no indications of an IPS failure or issue in the IPS logs.  The ASA show failover command shows:

   01:29:37 UTC Nov 10 2013
   Standby Ready              Failed                     Detect service card failure

This bug occurs during an IPS configuration change (signature update, signature tuning, GlobalCorrelation update).   In one instance the following IPS main.log warning occurred:

10Nov2013 01:33:24.334 22939.959 interface[1833] intfc/W AnalysisEngine is temporarily unresponsive to user queries, may be busy with Initialization or Signature Compilation or Global Correlation Update

NOTE: The above log occurs each day about 1:30 UTC (daily full GC update) and is a normal warning.
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