Bug ID 973673: CPU spikes when the LDAP operational timeout is set to 180 seconds

Last Modified: Sep 13, 2023

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

Known Affected Versions:
15.1.2,, 15.1.3,, 15.1.4,

Fixed In:
16.1.0, 15.1.5

Opened: Dec 14, 2020

Severity: 3-Major


By default, the LDAP operation timeout is 180 seconds, and this can cause CPU spikes.


High LDAP traffic load can cause cpu spikes and traffic disruption.


-- BIG-IP configured with a per-request access policy. -- A high traffic load containing a lot of LDAP Auth and LDAP Query operations occurs.



Fix Information

Reduced LDAP operational timeout to 50 sec for per-request based LDAP Auth and LDAP Query requests as accessV2 mpi request timeout is 60 sec only.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips