Bug ID 547550: avrd reports incorrect stat values

Last Modified: Mar 17, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP AFM, ASM(all modules)

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:

Opened: Sep 22, 2015
Severity: 2-Critical


AVR has some uint32 counters for DoS statistics both in HW and SW. And these counters were getting overflowed with time.


Impact would only be seen on some DoS stats but functionality wise everything works fine without any issue.


When the box is running under heavy DoS traffic for few hours, DoS counters can overflow.


There was no workaround.

Fix Information

Counter overflow is now handled correctly for both HW and SW DoS.

Behavior Change