Bug ID 2201421: Removing the active controller does not trigger an immediate tenant failover

Last Modified: Jul 28, 2026

Affected Product(s):
F5OS F5OS-C(all modules)

Fixed In:
F5OS-C 1.8.2-HR1, F5OS v2.0.0

Opened: Jan 13, 2026

Severity: 3-Major

Symptoms

On a VELOS chassis setup where the BIG-IP tenant is active for a traffic group and the HA score includes a weighted value for F5OS_INTERNAL_TRUNK. Removing the active controller does not result in an immediate failover.

Impact

Tenant failover is delayed upto 4min when an active controller of the active tenant is pulled out .

Conditions

The tenant is active for a traffic group and is running on the controller that is currently active for the partition hosting the tenant. The active system controller is removed or powered off using AOM.

Workaround

None.

Fix Information

Reduce the polling interval for lost VQF-link confD events to shorten the event detection time.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips