Only 16 AP are online

l  Only 16 AP are online

l  Trail license issue

l  Tried to activated license by CLI, and it worked

l  All APs became normal again

l  But with further checking, we found that was trial one

l  And we analyzed more, we found that the license was activated by the ESN of MPU not the chassis.

l   Issue is solved after ESNchange for the permanent license

The right license was activated but was wrong ESN.

As a sequenmce, Trial license was activated(due to wrong ESN), so when it was expired, only 16 AP became normal. 

l   Issue is solved after ESNchange for the permanent license. then deactivate the wrong one at AC, and the final step was activating the new license with the right ESN