QoS Policy Modeling for Conflict Analysis

Policy-based network management is a necessity in managing large scale environments. It provides means for separating high level system requirements from actual implementation. As the network size increases the need for automated tools to perform management increases rapidly. Configuring routers and network devices to achieve Quality of Service goals is a challenging task. Using Differentiated Services to dynamically perform this configuration involves defining policies on different network nodes along multiple domains. Policy aggregation across domains requires a unified policy model that can overcome the challenge of conflict detection and resolution. This paper proposes a unified model to represent and encode QoS policies that will result in efficient and flexible conflict analysis ability.