Bug ID 440854: Mirroring resets can lead to stale flows on standby

Last Modified: Jul 12, 2023

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

Known Affected Versions:
11.3.0, 11.4.1, 11.5.0

Fixed In:
11.5.1, 11.5.0 HF1, 11.4.1 HF4

Opened: Dec 16, 2013

Severity: 3-Major

Related Article: K15352


If the HA mirroring connection resets (tmctl ha_stat, in any of the columns expires, aborts, or overflows), then any flow-close messages in the failed batch will be lost. The flows will age out normally in the standby unit.


Possibly higher memory usage on standby.


Resets in the HA mirroring channel (tmctl ha_stat, any non-zero numbers in expires, aborts, or overflows).


None. However, high resets on the mirroring connection indicate that failover is unlikely to work properly, and should be corrected first.

Fix Information

Sweeper now kills stale mirrored flows.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips