Bug ID 963241: Standby unit shows a high number of total connections after enabling mirroring.

Last Modified: Sep 14, 2023

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

Known Affected Versions:
14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,

Opened: Nov 06, 2020

Severity: 3-Major


On a high availability (HA) pair of BIG-IPs configured with mirroring enabled, some flows that are killed immediately will cause two flows to be created on the Standby device. The flows on the Standby are short lived, with the only concerning factor being that the stats are climbing much faster than on the Active.


Incorrect stats on standby. Since the issue only appears when a connection is being shut down, all of the traffic on the active device should have a working mirrored flow on the standby.


-- Mirroring enabled. -- A connection is shut down.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips