Bug ID 753912: UDP flows may not be swept

Last Modified: May 23, 2019

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 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, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4

Fixed In:
15.0.0, 13.1.1.5, 12.1.4.1

Opened: Dec 21, 2018
Severity: 2-Critical

Symptoms

Some UDP connection flows do not show in connection table but do show up in stats. This might occur with datagram_lb mode is enabled on the UDP profile under heavy load.

Impact

Increased memory utilization of TMM.

Conditions

-- UDP profile with datagram_lb mode enabled. -- System under heavy load.

Workaround

None.

Fix Information

The system now correctly manages all expired flows.

Behavior Change