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Cisco Bug: CSCsg35760 - ASA IPS module stops processing traffic

Last Modified

Feb 22, 2014

Products (1)

  • Cisco IPS 4200 Series Sensors

Known Affected Releases

5.1(4) 6.0(1)

Description (partial)


IPS module in ASA stops generating alerts.


Sensor reports that 100% packets are dropped/missed.

This issue is confirmed by the following commands run in service account:
1) cat /proc/net/cisco/, in the output you will notice that "Rx_Packets" count does not increase, "RX_FIFO_Errors" is increasing, and "RX Debug" field has a non-zero un-changing hex value for RC:XX, where XX is normally 0. 

2) cat /proc/interrupts , notice interrupt counter for ge0_1 does not change over time.
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