An Aruba based network has a Master and four local controllers deployed. But one of the locals, a new installation, is not seen by the Master. What might be wrong? (Choose two.)
A. PAPI is not enabled on the local controller.
B. The master controller can only support three local controllers.
C. IPSec is blocked by the internal network between the local and the master controllers.
D. The passphrase does not match on the master and local controllers.
E. GRE is blocked between the master and local controllers
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