This object denotes the status of IGMP Access Authentication of the port. Note: enabled(1): Both the authentication and accounting functions are enabled, after the client is authenticated, the accounting message will be sent to Radius. disabled(2): Both the authentication and accounting functions are disabled. auth_only(3): Only the authentication function is enabled, after the client is authenticated, accounting message will not be sent to Radius. accounting_only(4): Only the accounting function is enabled, authentication is not needed, if the client joins a group, the accounting message will be sent to Radius.