为将IP业务准确分类,并根据所分优先级类别进行高效合理的区分保护,提出一种带有业务感知分类的网络保护策略(PSTAC)。定义信息重要度(IS)感知业务特征,结合贝叶斯理论建立业务优先级分类模型,并考虑不同级别业务的QoS参数进行针对性保护。仿真结果表明,所提PSTAC实现了高精度的业务分类,且比传统的区分保护策略有更高的资源利用率和更低的网络阻塞率。 In order to classify the IP services accurately and efficiently and rationally according to the priority classes, a network protection strategy with business sense classification (PSTAC) is proposed. Define Information Severity (IS) perceived business characteristics, establish business priority classification model based on Bayesian theory, and consider the QoS parameters of different levels of business for targeted protection. The simulation results show that the proposed PSTAC achieves high-precision service classification and has higher resource utilization and lower network blocking rate than the traditional differentiated protection strategy.