Bug ID 504998: TMM may occasionally restart with a core file when deployed VCMP guests are stopped

Last Modified: Mar 14, 2021

Bug Tracker

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

Known Affected Versions:
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, 11.5.10, 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

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.4

Opened: Feb 05, 2015
Severity: 1-Blocking


VCMP guest shutdown can interfere with execution of the VCMP hypervisor TMM, causing "Clock advanced" messages and TMM restarts wit corresponding core files.


Traffic disrupted while tmm restarts.


VCMP guests in state 'deployed' are modified to state 'provisioned' or 'configured', or are deleted entirely. The likelihood of a TMM restart increases with the number of guests that are stopping at the same time.


Shut down VCMP guests one at a time to reduce the likelihood of encountering this issue.

Fix Information


Behavior Change