Bug ID 421145: Random port selection scheme can cause false port exhaustion

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF6, 11.2.1 HF11

Opened: May 14, 2013
Severity: 3-Major
Related Article:
K15036

Symptoms

Port exhaustion can occur on systems that have approximately 500 active server-side flows on the affected thread.

Impact

Very occasional port exhaustion messages appearing for seemingly no reason.

Conditions

This occurs on systems that have approximately 500 active server-side flows on the affected thread.

Workaround

None.

Fix Information

Systems with many hundreds of active server-side flows on the affected thread no longer result in port exhaustion.

Behavior Change