Limitations and precautions for the USG9000

The limitations and precautions for the USG9500 are as follows:
-The USG9500 supports license application based on the ESN of the MPU or the backplane. It is recommended that the ESN of the backplane be used to apply for a license. Because you need to apply for a license again if you replace a faulty MPU whose ESN is used to apply for a license.
-In dual-MPU mode, if you use the ESN of an MPU to apply for a license, you must provide the ESNs of both active and standby MPUs.
-In dual-MPU mode, the license files, license file names, and license file storage paths of both MPUs must be the same. Otherwise, service interruption may occur upon MPU switchover.

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