Bug ID 616022: The BIG-IP monitor process fails to process timeout conditions

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2

Fixed In:
13.0.0, 12.1.2 HF1

Opened: Sep 13, 2016
Severity: 3-Major
Related AskF5 Article:


Pool members that are down are not marked down by the monitor. The BIG-IP system continues to attempt to monitor the object.


Incorrect monitor state. Pool members may not be marked down even though the target pool-member is down.


It is not known exactly what triggers this condition. It was encountered on an HTTPS monitor.


No known workaround.

Fix Information

The monitor process no longer inadvertently skips processing monitor timeouts and correctly marks monitored objects down.

Behavior Change