Best way for LWAPs to learn changed WLC IP address?

Hello!
I'm implementing subnets at a customer's network, and one of these changes is to give a unique subnet to the WLAN users. 
Since the APs store the WLC's IP address in NVRAM, I'm wondering what the best way is to get them to know its changed IP addres.  (I see that I can give the APs themselves new static IPs to use from within the WLC, but I don't see a clear way to tell them a new IP to contact for their controller.  After a reboot, they still are trying to associate to the original IP address of the WLC.)
I know we can go onto the console of each one and change it that way, but since these are mounted high up, that is not a particularly desirable solution...  ;^)
Thanks for any suggestions on the best way to go about making this change! 
Deb

If you have two wlc in redundancy configuration, you could always change one wlc address and make changes to the mobility groups and then move AP's over to the new ip wlc. Then change the other one and modify the wlc address in the mobility group again.
If you have one wlc and you don't want to use option 43 or DNS, you can always set the AP's high availability primary wlc info reflecting the new IP address. Even though you haven't changed the wlc management up yet, the AP's are still joined and known of that ip. So when you change the wlc IP address, the APs will already know the new IP address. I have just done this about a month ago with around 300+ AP's with no issues. You can use WCS/NCS or Prime if you have it, I just script the commands and paste it I tot he wlc CLI to make all the changes.
Just another option.
Sent from Cisco Technical Support iPhone App

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