现有的策略管理框架PBNM不仅存在着策略决策点负担过重、容易形成单点瓶颈等缺陷，同时还缺乏与SLA管理的紧密结合和具体实现。-PBNM existing policy management fr a mework is not only the existence of an excessive burden on policy decision point, easy to form defects such as single point of bottleneck, but also th