In this paper, we try to give a survey on recent advances of constraint based routing algorithms for traffic engineering.

概述面向流量工程的约束路由算法的研究进展。

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This paper puts emphasis on the discussion of constraint-based routing, its mathematical programming model is given and several common optimization algorithms are illustrated.

论文对基于约束的路由机制进行了重点论述，为其建立了数学规划模型，并给出了常用的优化算法。

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For its outstanding ability on constraint-based routing and multi-protocol encapsulation, more and more ISPs accept MPLS as fundamental technology for future networks.

依据在约束路由和多协议封装两方面的巨大优势，多协议标签交换（MPLS）已经被越来越多的服务商接受为未来互联网络的基本技术。

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