Bug ID 536690: Occasional host-tmm connections within a chassis will fail (affects APM processes trying to connect to a tmm)

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.4.1, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8

Fixed In:
12.0.0, 11.6.1, 11.5.4, 11.4.1 HF10

Opened: Jul 30, 2015
Severity: 1-Blocking
Related AskF5 Article:


When using features that require a process on the host to connect to a specific tmm within a chassis, those connections sometimes fail. This can result in improper behavior of the feature, such as failure to create sessions in APM.


Possible service failure, such as disallowing entry to APM.


Using a module and feature that requires host-tmm communication within a chassis.



Fix Information

Host-to-tmm connections within a chassis no longer fail.

Behavior Change