To see the debugs you just have to access the CLI of the controller module. You can do this by telnet, ssh, or session into it from the router's CLI with "service-module wlan-controller 1/0 session" command. "debug lwapp events enable" is the debug you would want to use to see what is going on with the AP's discovery and join process.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...