Bug ID 434730: Auto-sync may fail with many synchronizations in rapid succession

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.4.0, 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

Fixed In:
11.6.0, 11.5.2, 11.4.1 HF9

Opened: Oct 21, 2013
Severity: 3-Major
Related AskF5 Article:
K15536

Symptoms

If an device group is configured to perform auto-sync with incremental synchronization enabled, and a number of rapid configuration changes cause a rapid sequence of auto-sync operations, synchronizations may fail, and mcpd may log a message like the following to the LTM log: 0107168e:5: Unable to do incremental sync, reverting to full load for device group

Impact

Manual mcpd restart may be required.

Conditions

- This affects any device group configured with auto-sync enabled with and full-load-on-sync disabled. - A number of rapid configuration changes resulting in a rapid sequence of auto-sync operations.

Workaround

Disable auto-sync.

Fix Information

Automatic incremental synchronization succeeds even after a large number of synchronization operations in rapid succession.

Behavior Change