This object indicates the module which
generated the message.
'dot11' - This value represents the module in controller
responsible for handling the 802.11 messages.
'dot1x' - This value represents the module responsible for
handling the extensible authentication protocol.
'pem' - This value represents the module responsible for
handling the policy enforcement module.
'dhcp' - This value represents the module responsible for
handling dhcp related messages.
'aaa' - This value represents the module responsible for
handling radius related messages.