MPLS技术在流量工程中的应用

随着Internet规模的不断扩大，网络上的业务流量日益增多，并具有很强的突发性和不可预测性。加何管理和协调各种业务的流量负载以避免拥塞是当前研究的一个热点问题，这也使得流量工程（Traffic engineering)在Internet中的作用越来越重要。流量工程主要考虑对网络性能进行优化，其目标是有效而可靠地运行网络，同时优化网络资源的使用。MPLS（多协议标签交换）具有很多适合于缓解拥塞和平衡负载的特点，它的提出和发展为流量工程的实施开辟了一条崭新的道路。主要针对MPLS和流量工程相关的问题进行探讨，分析了如何利用MPLS来实施流量工程。

Applications of MPLS in Traffic Engineering

With the rapid increase of Internet, the network traffic is growing accordingly. How to manage and control the burst and unexpected traffic load to avoid congestion is a hot issue in current researches. Now Traffic Engineering (TE), which mainly concerns the optimization of network performance, becomes more and more important in Internet, whose objective is to make the operation of network efficient and reliable, and to optimize network resources. MPLS has many characteristics for lessening congestion and balancing load and presents a new path to implementing TE. This paper discusses the relevant issues on MPLS and TE, and analyzes how to realize TE with MPLS.