Question: Are there any known issues with Aruba PoE when it is connected to another POE switch?
Product and Software: This article applies to all Aruba Mobility Controllers.
If a PoE switch is connected to anAruba controller and PoE is enabled on the controller and the PoE switch, the PoE on the other ports of the Aruba controller stop working. PoE might work on one or two Aruba controller ports, but it does not work on the rest of the ports.
Currently this issue does not have a fix. The workaround is to disable PoE on both ports connecting the Aruba controller and the PoE switch and this should be followed as Aruba's best practice.