Bug ID 473105: FastL4 connections reset with pva-acceleration set to guaranteed

Last Modified: Oct 16, 2023

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
11.5.1 HF1, 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, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.1.0, 11.4.1, 11.5.0, 11.5.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF6, 11.5.2, 11.4.1 HF6

Opened: Jul 25, 2014

Severity: 2-Critical

Related Article: K16200

Symptoms

With 'pva-acceleration' set to 'guaranteed', the BIG-IP system can take up to five seconds to detect that one of either the client-side or server-side connections has not been offloaded to the ePVA hardware.

Impact

This results in the connection that has not been offloaded being reset five seconds after being established.

Conditions

This occurs with 'pva-acceleration' set to 'guaranteed' and only one of client or server connections is offloaded to hardware.

Workaround

None.

Fix Information

FastL4 connections are now handles correctly with pva-acceleration set to guaranteed, and are no longer reset.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips