I am running cisco 1220 AP with PEAP. i want to find out on how can i monitor my AP for malicious attacks or anyone doing dictionary attack or scanning my AP.
You can scan monitor your WLAN network for detecting rogue APs and other attacks. This can be accomplished by using the WDS feature. With WDS you can have many other features the RF monitoring being one. For more information on WDS you can read the following document.