Bug ID 494977: Rare outages possible when using config sync and node-based load balancing

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP None(all modules)

Known Affected Versions:
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, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 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, 11.6.1 HF2, 11.5.5

Opened: Dec 06, 2014

Severity: 3-Major

Related Article: K17399


In rare circumstances it is possible for tmm to experience an outage when processing traffic and using config sync. This is rare and appears to be related to a combination of config sync and processing traffic shortly after the tmm is brought online.


Interruption in service or HA failover.


Using config sync and node-based load balancing. This has only been observed early in traffic processing during a config sync; it does not appear to be related to how long the tmm has been online (e.g., online and not processing traffic or online in standby does not seem to make any difference; however, issuing a config sync and failing over at the same time might cause this to occur.)



Fix Information

Fixed a error that rarely occurred using config sync and node-based load balancing early in traffic processing.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips