Bug ID 530903: HA pair in a typical Active/Standby configuration becomes Active/Active after a software upgrade

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP Install/Upgrade(all modules)

Known Affected Versions:
11.4.1, 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, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 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

Fixed In:
12.0.0, 11.6.1 HF1, 11.5.4

Opened: Jul 01, 2015
Severity: 2-Critical
Related AskF5 Article:


HA pair should remain in active/standby state after the software upgrade but instead goes into an active/active state.


Active/Standby configuration is lost.


Occurs in an active/standby HA pair which has a medium size configuration of pools and virtual servers (at least 30 objects total). The standby device is upgraded first and then it is rebooted. After reboot, the HA pair goes into an Active/Active state. Upgrades to 11.5.0 through 11.5.3 as well as to 11.6.0 are impacted.


Reconfigure the HA pair back to active/standby.

Fix Information

HA pair in a typical Active/Standby configuration now remain Active/Standby after a software upgrade.

Behavior Change