How to H-REAP on Redundant 5508s across WAN ?

Hi,
We have started to implement lightweight APs with WLCs on a couple of our locations. Our initial design was to put in two 5508s on each locations that have around 30 APs installed, to save on $$ we were thinking about re-deploying the second WLC 5508 to a central location and have it as the secondary backup for all of our 8 locations running HREAP groups. Now my questions is, how do you define the APs on the local WLC and on the remote backup WLC? .. Do you define the APs as H-REAP mode on both the local and remote WLC? so do you only define them as H-REAP on the remote WLC and leave it as local mode on the local WLC.. ?
Thanks in advance ...

It is important to note that the AP Mode is actually an AP configuration and follows the AP around as it moved among WLCs.  Sure you configure it from the WLC, but what you're really doing is configuring the AP "through" the WLC. In other words, you'll find that on your remote WLC, there is no way to list APs as HREAP, as the APs aren't connected there.
So.... if I understand your question correctly, you're going to want to do the following:
Set up your WLANs on all WLCs to be identical configuration and order. If you build AP groups, add the wlans in the same order as well.
Configure your APs to allow HREAP Local Switching
Join APs ot your local WLC and change the AP Mode from Local to HREAP
Configuring the VLAN Mappings for each HREAP AP (since you're locally switching traffic)
Per AP, set High Availability Primary WLC to be the @site WLC, and set the secondary to be the @Central WLC.
At this point in time, your HREAP should be functional @site, and if something happens, they should join the @central and operate no differently....

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