MAC flapping will occur during a layer 2 roam for a clinet on 2 ap's or 2 wlc's ( salt and pepper deployment)This can also happen during HREAP local switching roamThe reason for this is that the client MAC address is learnt on the local switch by 2 ...
On the Web GUI :Monitor-> Statistics-> AP join What is the failure rror message reason indicatedAlso if you have access to the AP consoleRun a debug capwap client errorsLet me know if you have any questions
Has the AP joined the WLC :What you can do is you go to wireless - > select the AP and override global credentialss to set a password for it specifically
Use the show mac address-table int gi x/x command to find the mac address of the AP . Try to shut / no shut the switch interface to reset the AP.You can check the DHCP server to see if it has an ip address and try to ping it from the WLCEnsure that t...