Bug ID 547550: avrd reports incorrect stat values

Last Modified: Apr 10, 2019

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, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0

Opened: Sep 22, 2015
Severity: 2-Critical

Symptoms

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

Impact

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

Conditions

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

Workaround

There was no workaround.

Fix Information

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

Behavior Change