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本文首先介绍了流量工程的概念和传统的流量工程实现技术，接着详细讨论了MPLS流量工程的特点、核心技术以及实现方法。文章通过分析比较，指出基于CD－LDP的MPLS流量工程方案将成为IP网上流量工程的主要解决途径。
This paper first introduces the concept of traffic engineering and traditional traffic engineering technology, and then discusses in detail the characteristics of MPLS traffic engineering, the core technology and implementation methods. Through the analysis and comparison, the article points out that the MPLS traffic engineering solution based on CD-LDP will be the main solution to IP traffic engineering.