The CXPST attack algorithm,appeared in 2011,can launch large-scale service-denial attacks to the backbone routers which run BGP protocol.In view of the situation that both the attacking range and the attacking process are uncontrollable,with modeling analysis of backbone network topology structure and BGP protocol data diffusion path,the paper presents a controllable BGP protocol algorithm based on attenuation diffusion.Simulation experiments demonstrate that,according to attenuation diffusion attack strategy,the controllable CXPST attacks to local regions can be realized.%2011年出现的CXPST攻击算法能够对运行BGP协议的骨干路由器发起大规模的拒绝服务攻击。针对该算法攻击范围和攻击过程均不可控的现状，通过对骨干网络拓扑结构和BGP协议数据扩散路径的建模分析，提出基于衰减扩散的可控BGP协议的攻击算法。仿真实验表明，按衰减扩散的攻击策略，可以实现对局部区域的可控CXPST攻击。
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