I know the documentation says that the Cisco 2100 series WLAN controllers can NOT terminate a VPN tunnel and as such cannot act as the Anchor controller in the DMZ.
Does the 2500 series suffer from the same problem, or can it be used as an anchor?
The only approved anchors listed are the 3750 w/ WLC, the 4400 series, and the 6500 series, but no mention is made of the 2500 or 5500 controllers.