Bug ID 658103: TMM core while adding logging action to APM SWG

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
12.1.3, 12.1.2, 12.1.1, 12.1.0

Opened: Apr 12, 2017
Severity: 2-Critical
Related AskF5 Article:


TMM core while adding logging action to APM SWG.


TMM core. Traffic disrupted while tmm restarts.


-- Use of an application lookup perflow variable (perflow.application_lookup.result.*) in an SWG per-request Logging Agent. -- No Application Lookup Agent found prior in the chain. For example - The following example will crash: start : logging : allow - The following will succeed: start : application lookup : logging : allow


There are two possible workarounds: -- Remove the applicable perflow variables from the logging agent. -- Add an application lookup before trying to log application lookup perflow variables.

Fix Information


Behavior Change