基于MPLS流量工程的多路径负载均衡方法

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。

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

Two multi-path constraint-based load balancing methods were proposed for Internet traffic 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.