**The Aruba 125 access point show me il flags**

  - Make sure the VLAN the access point is on has dhcp
  - Make sure the controller has an ip interface on that VLAN
  - Make sure control plane security is **turned off**:
  - (configuration> network> controller> control plane security> Disabled> Apply.
 
By CLI set: ADP enable

adp discovery {disable|enable} igmp-join {disable|enable} igmp-vlan <vlan>

(Aruba7030) [mynode] (config) #ADP discovery enable