Exam F5CAB4 Topic 3 Question 10 Discussion

Actual exam question for F5's F5CAB4 exam
Question #: 10
Topic #: 3
A BIG-IP Administrator receives an RMA replacement for a failed F5 device. The Administrator tries to restore a UCS taken from the previous device, but the restore fails. The following error appears in the /var/log/ltm:
insufficient pool members. 01070608:3: License is not operational
(expired, digital signature does not match contents)
What should the BIG-IP Administrator do to avoid this error? (Choose one answer)

Suggested Answer: C Vote an answer

When restoring a UCS file to replacement hardware (RMA device), the license from the original device is not valid on the new system. If the UCS restore attempts to load the old license, BIG-IP reports license errors such as "License is not operational", which can prevent traffic objects (including pools and virtual servers) from loading correctly.
To avoid this issue, F5 documentation recommends restoring the UCS without the license, using the following command:
tmsh load /sys ucs <ucs filename> no-license
This approach:
Restores all configuration objects (LTM, networking, certificates, keys, etc.) Excludes the invalid license tied to the old hardware Allows the administrator to activate a new license separately on the replacement device

by Kerr at Sep 28, 2026, 08:55 AM

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