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Cisco Bug: CSCun13520 - SSC-5 signature update fails due to high sensorApp memory use

Last Modified

Jul 21, 2016

Products (1)

  • Cisco IPS 4200 Series Sensors

Known Affected Releases


Description (partial)

Sigupdate fails (sensorApp aborts or is unresponsive to statistics commands) during a signature update.   Prior to the failure the top utility output (from show tech) shows free memory available at 15 Meg or less.

Example Top output (only 10 Meg free):

top -
Mem:    . . .  total  . . . used  . . .   10212k free  . . .

The SSC-5 platform has 500 Meg of available system memory.  The sensorApp process high memory-use condition can occur from a combination of traffic + signature-config + sig-level version + sig-updates and/or sig-tunings.  If the sensorApp memory is high enough that there is only 15 Meg or less available free memory then the signature updates are likely to fail.
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