C编译器——设计与实现.pdf

8 Vol.38 No. 8 2010 8 ACTA ELECTRONICA SINICA Aug. 2010 1 1, 2 3 徐明伟 , 江学智 , 陈文龙 ( 1. , 100084; 2. , 050083; 3. , 100083) : . , . , . , , . . : ; ; ; : TP39305 : A : (2010) Survey on Distributed Control in a Router 1 1, 2 3 XU MingWei ,JIANG Xue hi , CHEN WenLong (1.Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China; 2.Shjiiazhuang echanizedInf antry Institute, Shjiiazhuang,Hebei 050083, China; 3. School of Inf ormationEngineering, University of Science and Technology Beijing, Bejiing 100083, China) Abstract: The rapid development of optical transmission and fast growth of Internet traffics require higherperformance routers.The overload of control plane often causesthe oscillation of network. In a serious case, it results in router crashing.To over come the problems of the monolithic control plane, some schemes of distributed control in a router have been proposed.In this pa per,we thoroughly analyzedthe problems of centralized control plane.Based on the critical obstacles in realizing router s distributed control,we made summary and comparison of existing schemesfrom three aspects: distributed control plane, internal communication of distributed control plane and distributed implementation of routing protocol and algorithm.Finally,the future trend is discussed. Key words: router; distributed control plane; internal communication; distributed routing protocol and algo