MPLS网络带宽配置的Hose模型及优化算法

Hose Model and Optimal Algorithm of Bandwidth Allocation in MPLS Network

服务质量(QoS)和流量工程(TE)是在当前网络中提供实时应用业务的两项重要技术.多协议标记交换(MPLS)在IP网QoS提供和TE实现中起了关键作用.本文首先介绍了Hose模型,分析了MPLS网采用该模型提供多种VPN业务的流量工程问题,提出了MPLS网采用该模型提供多种VPN业务的最优带宽配置算法,给出了相关的优化模型和实例,实例优化结果表明该方法能在确保业务的QoS要求并且网络开销增加较少的情况下,有效地均衡网络负荷.

Quality of Service（QoS） and Traffic Engineering（TE） capabilities are two important techniques in today＇s networks for supporting real-time applications. Multi Protocol Label Switching（MPLS） plays an important part in IP networks by providing QoS and TE. A hose model is first introduced; then, the problem of the traffic engineering using hose model for providing multi-VPN services in MPLS network is formulated.An optimal bandwidth allocation algorithm using hose model for providing multi-VPN services in MPLS network is presented . The optimal model and instance of the algorithm is given too. The results of the instance show that the proposed method can balance the network load while the increase of the network cost is little.