一种新的基于可分配流量的MPLS网络流级负载均衡  

A New Flow-Level Load Balance in MPLS Network Based on Distributable Traffic

作　　者：郝琨[1] 史玉琢[2] 郝评[3] 

机构地区：[1]天津城市建设学院电子与信息工程系,天津300384 [2]天津财贸管理干部学院,天津300170 [3]天津工程师范学院电子工程系,300222

出　　处：《通信技术》2009年第4期70-72,共3页Communications Technology

摘　　要：提出了一种新的基于可分配流量的MPLS网络流级负载均衡机制,该机制考虑到实际网络中的背景业务,每个LSP模拟为M/G/1处理器共享队列。根据每个LSP上的延迟和丢包率,来计算成本函数,并对这个成本函数最小化。每个LSP上的可分配流量与最小化成本函数成反比。仿真结果表明该算法具有更好的公平性,能够在多径之间平衡地分配流量。网络中的吞吐率得到显著的提高,丢包率也有所下降。This paper describes a new flow level load balance mechanism among the parallel Label Switched Paths in MPLS networks, in which the cross traffic in real networks is considered, and each LSP is modeled as an M/G/1 processor-sharing queue. A new defined cost function is used to distribute the traffic to the path. Based on the delay and packet loss of each LSPs the cost function is calculated, and minimized. The minimized cost function is in inverse proportion to DT. Simulation results show that this approach is so effective that the throughput is increased significantly while the end-to-end delay and packet drop rate decreased, and it could distribute the traffic onto parallel LSPs more evenly and fairly.

关 键 词：MPLS 负载均衡 可分配流量 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]