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

Last Modified: Oct 16, 2023

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

Known Affected Versions:
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 Article: K37665112


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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips