Bug ID 501953: HA failsafe triggering on standby device does not clear next active for that device.

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
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, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3

Opened: Jan 20, 2015
Severity: 3-Major
Related AskF5 Article:
K16492

Symptoms

An HA failsafe triggering on a standby device that is marked as next active for a traffic group does not clear the next active setting for that device. This leaves the system in a state in which the device designated as next active cannot take over for the active device in the case of a failure.

Impact

A device marked as next active for a traffic group with a triggered HA failsafe does not take over a traffic group in the case of a failure on the active switch.

Conditions

-- High availability (HA) setup with two or more devices in a device trust and device group. -- HA failsafes are configured on one or more devices in the device group. -- The HA failsafes are triggered on a device that is currently in the standby state and designated next active for a traffic group.

Workaround

Workaround is to force the device in question offline, so that another device is marked as next active.

Fix Information

The system now correctly removes the next active setting for a device when it is in standby mode and an HA failsafe triggers. This causes a new device to be picked as next active if one is in standby mode and capable of running the traffic group.

Behavior Change