The analysis of the research process of traditional IP routing and QoS routing follows the introduction of the past and present research of traffic engineering. The latest research results of current MPLS traffic engineering are presented.

• 然后介绍了流量工程的沿革与目前的研究，分析了传统IP路由、QoS路由方面的研究过程，汇总了目前MPLS流量工程问题的最新研究成果。