Bug ID 420588: Increase SIP ingress queue length

Last Modified: Mar 12, 2019

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, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9

Fixed In:
11.2.1 HF11

Opened: May 06, 2013
Severity: 2-Critical
Related AskF5 Article:
K15134

Symptoms

The default SIP ingress queue length of 16 causes responses to be dropped under heavy load.

Impact

Messages are dropped under heavy load.

Conditions

At smaller load sizes, this is not an issue.

Workaround

None.

Fix Information

SIP ingress queue length was 16 and is now 512. TMOS v11.3 and later uses the larger buffer size.

Behavior Change