Abstract: A method for generating statistical information for performance management reporting is provided. Raw statistical information provided by managed data network equipment is described in a body of vendor data network equipment specific metadata—the collection of which is referred to as vendor statistics metadata. The statistical information needed for performance reporting is described in a body of performance reporting metadata. The method has a sequence of steps. In an initial syntactic translation step, the vendor statistics metadata is used to transform raw statistical information provided by managed data network equipment into a common format removing vendor dependencies while maintaining vendor semantics. In a second semantic extraction step, the statistical information for performance reporting is extracted in accordance to specifications described in a body of statistics semantic mapping metadata from a body of common format statistic information in accordance with prespecified preferences.