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

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.2 HF1, 11.2.0, 11.4.1

Fixed In:
11.6.0, 11.5.1 HF6, 11.4.1 HF9

Opened: Apr 23, 2014

Severity: 3-Major

Related Article: K16083

Symptoms

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.

Impact

Outage on one or more blades.

Conditions

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

Workaround

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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips