Bug ID 441401: Standby units using L4 mirroring can use more memory than required

Last Modified: Jul 12, 2023

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

Known Affected Versions:
11.4.1, 11.5.0

Fixed In:
11.5.1, 11.5.0 HF1, 11.4.1 HF4

Opened: Dec 20, 2013

Severity: 3-Major

Related Article: K16088


On standby units using Layer 4 (L4) mirroring, some memory is retained longer than necessary leading to higher memory usage on the standby.


Higher memory usage on the standby, leading to earlier aggressive sweeper activation than on the active.


A standby unit using L4 mirroring.



Fix Information

Released memory earlier on standby units using L4 mirroring, Some memory was retained longer than necessary

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips