Bug ID 458556: TMM may fail to start in certain traffic situations on chassis platforms

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.4.1, 11.5.0, 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

Fixed In:
11.6.0, 11.5.1 HF6, 11.4.1 HF9

Opened: Apr 23, 2014
Severity: 3-Major
Related Article:


TMM restarts on startup, when traffic arrives before the cmp transitions to ready. The transition to ready message can be found in the TMM logs; if traffic is sent to the device prior to this, it is possible for TMM to core.


Outage on one or more blades.


Applies to chassis platforms with monitors enabled, that are restarted or upgraded while traffic is running.


Disable monitors, restart TMM, then re-enable the monitors.

Fix Information

TMM will no longer core on startup when traffic arrives before transitioning to cmp ready.

Behavior Change