Bug ID 754349: FTP connections to virtual server drop when both sides of data channel are offloaded via FastL4

Last Modified: Jul 16, 2019

Bug Tracker

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

Known Affected Versions:
14.0.0,,,, 13.1.1,,,,

Opened: Dec 31, 2018
Severity: 3-Major


FTP uploads that are offloaded on both sides drop after the idle timeout period, even though data is flowing.


Dropped connections; data loss.


-- FTP virtual server set up with a standard profile and FastL4 offloading. -- Attempt a file upload to the virtual server where both client and server side of the data channel are offloaded.


You can do either of the following: -- Enable Inherit Parent Profile on the FTP profile. -- Turn off FastL4 offloading.

Fix Information


Behavior Change