Anycast QoS Route Research And Simulation Based On NS-2

Along with the multimedia application domain unceasing development andthe network correspondence daily popularization, the network service whichemerges one after another incessantly, such as: The IP telephone, the networkconference, the video on demand, the long-distance medical service, the networkclassroom and so on the multimedia application service, set a higher request tothe internet. Amongthem, provides QoS (Quality of Service) to guarantee is akey content, realizes becomes the current research to the QoS support networkroute agreement and the route algorithm the hot topic.In order to enhance the network service the reliability, as well as balancednetwork and server load, the people proposed one kind of new network servicepattern--Anycast. It allows a group of service node to have the identicalAnycast address, when customer request service, discovers "most suits" theservice node for it to provide the service. According to the Anycast servicecharacteristic, may better provide network QoS using Anycast to guarantee,therefore, routing protocol research is launching gradually in view of Anycastthe QoS.The present paper research key point is, uses the existing domestic andforeign correlation research results, studies the simulation in general network simulation software NS-2 to realize one kind of Anycast the QoS route plan,simultaneously, proposes one kind of feasible support multi-QoS restraint routealgorithm.This article elaborated Anycast and IP the QoS technology, studies itsrealization method; And with emphasis analyzed the network simulator NS-2route principle. In this foundation, the thorough research realizes Anycast to theNS-2 expansion the QoS route plan, and gives the expansion realization theconcrete process and the procedure code. Finally, through the figures anddiagrams analysis tool, carries on the data analysis to the experimental result,draws the o bjective conclusion. This is simulates on NS-2 realizes Anycast aQoS agreement beneficial attempt, simultaneously, also has laid the foundationfor the next further research.