I'm using the internal WLC DHCP to assign DHCP addresses to our APs. If you have more then one scope defined in the internal DHCP how it is determined which scope the APs use versus clients on a WLAN?
Ran into an issue last week where our APs started using addresses from the other scope and the wireless network went down. Seeing a design issue where the WLC interface and one of the WLAN are using the same VLAN. Thinking I need to separate the WLANs from the WLC AP Manager and Mangement interfaces.
You do need to seperate the AP's from the wireless user subnet especialy if you plan on using dhcp on the wlc. I always place the ap's on seperate subnets from any wired or wireless user subnet. I will place them in a management subnet if possible.