Welcome to Cisco Support Community. We would love to have your feedback.
For an introduction to the new site, click here. And see here for current known issues.
Can a WISM be connected to 2 different 4402 DMZ anchors on 2 different ISP for fail over senario. Without actually using one of them unless the other is down ?
I suppose this might be helpful:
Also, check the Enterprise Mobility 4.1 guide (chapter 10) for more information on how to setup this feature...