Bug ID 734844: TCP resets due to 'Failed to find Sync Data'

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
14.0.0,,,,,, 14.0.1,

Opened: Jul 16, 2018
Severity: 3-Major


TCP flows are reset with root cause of 'Failed to find Sync Data' on TMM.


The flow ID is used to identify flows, and changes in between, thus causing the receiving end of the split session fail to find the shared data. TCP flow resets when the inline devices modify the flow ID, such as IP address or port number.


-- SSLO-deployed applications that connect to L3 devices. -- Virtual server uses Split Session to synchronize data across inline devices or between two BIG-IP systems.


Ensure that the inline devices do not change the flow ID.

Fix Information


Behavior Change