Bug ID 685519: Mirrored connections ignore the handshake timeout

Last Modified: Nov 22, 2021

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

Known Affected Versions:
13.1.1, 13.1.0, 13.0.1, 13.0.0, 12.1.4, 12.1.3, 12.1.2, 11.6.3, 11.6.1, 11.6.1, 11.5.9, 11.5.8, 11.5.7, 11.5.6, 11.5.5, 11.5.4, 11.5.4

Fixed In:
14.0.0,,, 11.6.4

Opened: Sep 26, 2017

Severity: 3-Major


Mirrored connections that do not complete the TCP 3-way-handshake do not honor the configured TCP handshake timeout on active and standby systems.


Unestablished TCP sessions in the connection table stay open for the duration of the TCP idle-timeout.


High availability mirroring enabled on virtual server with attached FastL4 profile.



Fix Information

Mirrored connections now honor the TCP handshake timeout.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips