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Future network is thought to be a unitive intergrated service network, and IP is a promising unitive network protocol. However,there is a flaw with IP itself that it can not effectively guarantee communication quality. So the improvement on IP is needed. IETF working group intserv and diffserv proposed IP intergrated service communication model IS and DS respectively. This paper analyses two models, and suggests that it is suitable to employ IS modle at the edge of network and DS model in the core of network.
Future network is thought to be a unitive intergrated service network, and IP is a promising unitive network protocol. However, there is a flaw with IP itself that it can not effectively guarantee communication quality. IETF working group intserv and diffserv proposed IP intergrated service communication model IS and DS respectively. This paper analyzes two models, and suggests that it is suitable to employ IS modle at the edge of network and DS model in the core of network.