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 13, 2023

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

Known Affected Versions:
11.3.0, 12.1.2, 12.1.3,,,,,,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,

Fixed In:
14.0.0,, 12.1.4

Opened: Jan 12, 2018

Severity: 3-Major


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


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


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



Fix Information

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

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips