Bug ID 802961: The 'any-available' prober selection is not as random as in earlier versions

Last Modified: Dec 13, 2019

Bug Tracker

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 15.0.0, 15.0.1

Fixed In:
15.1.0

Opened: Jul 08, 2019
Severity: 3-Major

Symptoms

Some big3d instances can be periodically busier than other big3d instances.

Impact

When the 'any-available' prober option is used, the selection of big3d probers may not be as random as in BIG-IP software versions prior to v13.0.0.

Conditions

-- When 'any-available' is selected for either the prober-preference or prober-fallback options. -- A large number of monitors are defined.

Workaround

None.

Fix Information

None

Behavior Change