I'm having an issue with 1142 AP's only on a 5508 WLC running the latest 6.0.188 code. When I try to join the 1142 AP's to the WLC, the AP's do join and download an image, but then continually reset/reload after these errors:
: %CAPWAP-3-ERRORLOG: Failed to handle capwap control message from controller
: %CAPWAP-3-ERRORLOG: Failed to process unencrypted capwap packet from 172.16.200.50
: %CAPWAP-3-ERRORLOG: Invalid AC Message Type 4
I do have 1252 AP's on the network with no issues as they are using LWAPP to connect from what I can tell. At one point I did have the two distribution ports in a LAG on one 3750G switch. I then took it off and just configured one port not in a LAG and still had the same issue. I did attempt to create a seperate AP manager port on the same VLAN as the AP's and the errors stopped. Routing is working and there is not a firewall in between the AP's and the WLC. I also put the AP into the same VLAN as the WLC and the errors also stopped.
I've always put the AP's on a seperate VLAN from the WLC and have never had this issue. But in this case, I cannot figure out why I would have this problem.
Seems like CAPWAP can't traverse vlans? Am I missing something?