Bug ID 701678: Non-TCP and non-FastL4 virtual server with rate-limits may periodically stop sending packets to server when rate exceeded

Last Modified: Sep 06, 2019

Bug Tracker

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

Known Affected Versions:
11.3.0, 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, 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, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4, 14.1.0.5, 14.1.0.6, 14.1.2, 15.0.0, 15.0.1

Fixed In:
14.0.0, 13.1.1.4, 12.1.4

Opened: Jan 12, 2018
Severity: 3-Major

Symptoms

TMM may periodically stop sending packets to the server for a few seconds when the configured virtual server rate-limited value is exceeded.

Impact

The virtual server might intermittently stop sending packets to the pool member server for a few seconds.

Conditions

-- Virtual configured with rate-limit. -- Uses a UDP profile (i.e., not using TCP or FastL4). -- The idle-timeout is set to immediate.

Workaround

None.

Fix Information

UDP rate-limited virtual server now correctly sends packets to the server.

Behavior Change