Abstract
In recent years,The cloud technology development is more and more mature,Under the cloud computing technology,there are a variety of data center in order to reduce the cost and to increase the efficiency of the Quality of Service(QoS), Many multimedia applications and online services have risen on the Internet,and they need high quality services for better guaranteed Quality of Service (QoS),Quality of Service(QoS) is only performed with bandwidth guarantees and by a well-known FIFO scheduling. Facing this limitation, we propose a new software framework that based on Software Defined Networks(SDN),OpenFlow.This framework can lower the delay time in network in real time,and not only have guaranteeing bandwidth but also have guarateeing delay,it include source Monitoring,Route calculation,Resource reservation,three part in this software framework,how to use SDN to have better Quality of Service(QoS) become in important issue in the future.we will explain more detail in my thesis .