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传统IP网络中,通常路由器选择最短路径作为路由,而不考虑带宽等因素,一旦发生拥塞就无法解决。以MPLS技术为代表的集成模型实现了真正意义上的路由与交换融合,在流量工程方面具备充分的灵活性与可拓展性,而且费用更加低廉。本文在充分理解资源预留协议(Resource Re Ser Vation Protocol,RSVP)工作运行原理的基础上,对RSVP关于流量工程的拓展协议RSVP-TE进行了深入的模块设计,设计了如何利用RSVP-TE协议建立MPLS-TE中所需要的隧道。最终在GNS3中进行了RSVP以及MPLS-TE的仿真实现。
In the traditional IP network, usually the router chooses the shortest route as the route, without considering the bandwidth and other factors, and can not be solved once the congestion occurs. The integrated model represented by MPLS technology realizes the integration of routing and exchange in the real sense of traffic. It has sufficient flexibility and scalability in traffic engineering and is cheaper. Based on the full understanding of the operating principle of Resource ReSerVation Protocol (RSVP), this paper deeply designs the RSVP-TE protocol for traffic engineering, and designs how to use RSVP-TE protocol Establish the required tunnel in MPLS-TE. Finally, RSVP and MPLS-TE emulation were implemented in GNS3.