In broadband networks, dynamic service change affects the management system because of the variability in time to market, transmission quality and transport system. Therefore, reusability and maintainability become the important quality factors in Network Management System (NMS). An aspect-oriented software development method is a feasible solution for the evolvability of NMS. In this paper, we propose a method to generate aspects in a standard management information model using Aspect Conversion and Metric Calculation (ACMC) algorithm. We applied it ITU-T M.3100 and evaluated it via the ratio of reduced redundancy in point of crosscutting concerns.