Bug ID 626851: Potential crash in a multi-blade chassis during CMP state changes.

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3

Fixed In:
13.1.0, 13.0.1, 12.1.2 HF1

Opened: Nov 03, 2016
Severity: 2-Critical
Related AskF5 Article:


CMP state change can result in a blade crash.


Blade crash resulting in potential loss of service.


CMP state change with a PEM profile enabled on a virtual. The former can be triggered using a TMM restart/unrelated crash, blade insertion or blade administrative state change.


Deploy PEM in an HA-pair with a chassis fail over configured to occur if at most one blade on the active chassis fails.

Fix Information

The system now gracefully handles sessionDB errors due to a CMP state change.

Behavior Change