Bug ID 737445: Use of TCP Verified Accept can disable server-side flow control

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 14.0.0, 14.0.0.1, 14.0.0.2

Fixed In:
14.1.0, 14.0.0.3, 13.1.1.2

Opened: Jul 19, 2018
Severity: 2-Critical

Symptoms

Unexpectedly high memory usage, aggressive sweeper messages, TCP memory pressure messages in logs.

Impact

Excessive memory usage.

Conditions

Verified Accept is enabled in TCP profiles that are associated with virtual servers.

Workaround

There is no workaround other than disabling Verified Accept.

Fix Information

Fixed server-side flow control.

Behavior Change