Bug ID 653210: Rare resets during the login process

Last Modified: Jun 10, 2021

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3

Fixed In:

Opened: Mar 23, 2017
Severity: 3-Major


On rare occasions, the login process resets and a NULL sresult message will be logged in /var/log/apm: -- notice tmm[18397]: 01490505:5: /Common/ltm-apm_main_irules:Common:448568c9: Get license - Unexpected NULL session reply. Resetting connection.


The system resets the client connection attempt. The APM end user client must retry the login process.


A race condition allows license information to be processed out of order.


Have the APM end user client retry the login operation.

Fix Information


Behavior Change