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提出了一种闭环的基于MPLS流量工程的拥塞控制协议-TECC,它能在MPLS网络中检测拥塞,根据拥塞状况动态地重新分配资源,以达到消除拥塞,优化利用网络资源的目的。为实现这一机制,首先对IETF提出的受限路由消息分发协议CR-LDP作了改进和扩充,定义了一些新的信令消息,用来通告拥塞,重新协商资源,以及统计网络状态。并通过仿真器OPNET对TECC进行了仿真和验证。
A closed-loop congestion control protocol-TECC based on MPLS traffic engineering is proposed. It can detect congestion in MPLS network and dynamically reallocate resources according to congestion status so as to eliminate congestion and optimize the use of network resources. In order to realize this mechanism, I first improve and expand CR-LDP, which is a limited routing message distribution protocol proposed by IETF, and define some new signaling messages to announce congestion, re-negotiate resources and count network status. The simulation and verification of TECC are carried out by simulator OPNET.