Bug ID 542031: CMP messages may be lost leading to inconsistent behaviors

Last Modified: Nov 22, 2021

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

Known Affected Versions:
10.2.2, 10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.4.1 HF10, 11.2.1 HF16

Opened: Aug 26, 2015

Severity: 3-Major

Related Article: K33550067


Features that utilize CMP messages may exhibit inconsistent behavior.


Some examples: ARP failures, persistence failures, and connection stalling.


Upon receiving a CMP message, the tmm processes an internal event that sends CMP message that overwrites the incoming message.



Fix Information

Incoming CMP messages are no longer overwritten before they have been processed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips