New Study and Implementation of Policy Based Network Management System
Yang Jiahai · Journal of Chinese Computer Systems · 2007
Policy refinement and policy conflict resolution are two of the toughest issues in implementing a policy-based network management (PBNM) system. Based on a brief review of general PBNM theories and specific access control technologies, the paper proposed a novel policy-based network management model, which adopts XML as the high level policy description language, and uses the generalized access control list(ACL) as an intermediate refining mechanism, focusing on network security and QoS management. Some critical issues and their solutions, including policy representation, policy refinement, and policy conflict policy detection, are discussed. A formula representation of the policy conflict issue is given with several important inferences. The effectiveness and efficiency of the model is verified by the implemented prototype.