摘要： 在部署MPLS VPN时，接入服务商边缘路由器的各VPN场点存在闲置资源，也可能有突发的带宽资源需求。针对这些问题，提出一种改进的动态服务质量机制。设计实时流量监测预测模块，采用LGP算法对实时流量的峰值进行高概率预测，达到动态预留资源的目的。设计闲置资源再分配模块，把闲置资源用于再分配，为用户提供订制带宽以外的资源抢占业务。仿真实验表明，将该机制应用于MPLS VPN区分服务中，能有效提高服务质量。

关键词: 虚拟专用网, 流量预测, 区分服务

Abstract: When MPLS VPN are deployed, there are much free resource at some VPN sites, while there are also outburst bandwidth demand at some other VPN sites. This paper proposes an improved dynamic QoS mechanism. The real-time monitoring module is designed, it uses LGP algorithm to predict the peak value of the real-time traffic with a high probability, and fulfill the reservation of resource dynamically. The free resource reallocation module provides the occupying-opportunity for users by reallocating the free resource. Simulation results show that applying this mechanism in MPLS VPN DifferServ network can improve QoS effectively.

Key words: Virtual Private Network(VPN), traffic prediction, DifferServ

中图分类号: 

• TP393