Bug ID 1399369: While upgrading standby device, active device is going to standby mode for few seconds, and traffic loss is observed.

Last Modified: Dec 02, 2024

Affected Product(s):
BIG-IP Install/Upgrade, LTM(all modules)

Known Affected Versions:
F5OS-A 1.7.0

Opened: Nov 16, 2023

Severity: 1-Blocking

Symptoms

Traffic loss due to failover.

Impact

Traffic loss lasting up to 20 seconds approx.

Conditions

-- F5OS with BIG-IP tenants. -- Execute failovers on the active device by running "tmsh run sys failover standby". -- Proceed to upgrade F5OS on the current standby device. -- Note that during this process, the device previously in Active mode will transition to standby mode momentarily, typically lasting around 20 seconds.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips