基于MPLS流量工程的多路径约束负载均衡方法  

Multi-path constraint-based load balancing methods for MPLS traffic engineering

作　　者：贾艳萍[1] 孟相如[1] 麻海圆[1] 郝志建[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《计算机应用》2007年第3期522-524,共3页journal of Computer Applications

基　　金：空军科研项目(020066);陕西省自然科学基金资助项目(2005517)

摘　　要：对多协议标签交换(MPLS)流量工程负载均衡问题,提出了两种多路径基于约束的负载均衡方法,在LSP建立初期就融入负载均衡思想。在通常的CSPF算法中,对于一个大带宽约束很可能无法找到可行路径,文中所提方法在没有单一路径满足带宽约束时,能将带宽约束划分为两个或多个子约束,并为每一子约束找到约束路径。实验结果表明,所提方法能增加路径建立的成功率,提高网络资源利用率,达到流量均衡。Two multi-path constraint-based load balancing methods were proposed for Internet tragic engineering of MultiProtocol Label Switching （MPLS）, importing the idea of load balancing at the beginning of path setup. In a normal constraint-based shortest path first （CSPF） routing algorithm, there is a high probability that it can not find a feasible path through networks for a large bandwidth constraint. The proposed methods can divide the bandwidth constraints into two or more sub-constraints and find a constrained path for each sub-constraint, if there is no single path satisfying the whole constraints. Simulations show that they enhance the success probability of path setup and the availability of network resources.

关 键 词：多协议标签交换 流量工程 负载均衡 约束路由 区分服务 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]