Last Modified: Feb 13, 2019
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Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4
11.6.0, 11.5.1 HF5
Opened: Apr 25, 2014
Related AskF5 Article: K16346
The PVA statistics reported by TMSH can incorrectly report bits and packets processed counts of about 34 billion and 16 million, respectively. This failure is intermittent.
Incorrect statistics. Data flow through the BIG-IP is not impacted.
There are no specific conditions leading to this problem.
PVA statistics for each flow are tracked in hardware and software. The software copy of the hardware flow statistics was not correctly reset when flows were evicted from the PVA hardware and then subsequently reloaded back into the hardware. This eventually resulted in a numeric underflow in the statistics counters that were then displayed with very large positive values. This issue is now fixed.