F5 F5CAB1 Question Answer
When is theLicense Service Check Dateenforced on a BIG-IP system?
After editing a virtual server
During a software install
During system startup
TheService Check Datedetermines whether a particular software version is allowed to run under the device’s license.
When installing or upgrading TMOS, the installer checks theService Check Datestored in the BIG-IP license file.
If the license date isolderthan the minimum required for the target version, the software installation isblocked.
This check happensspecifically during a software install, not during routine device operations.
Editing virtual servers or system startup do not trigger this validation.
Thus, the enforcement happensduring software installation.
TESTED 22 Nov 2025
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