Research On OpenFlow Networking QoS Management Strategy

Internet was developed from the ARPANET project during the 1960 s and 1970 s.The original internet was designed just to make different computers can communicate with each other.But with the development of the internet network,more and more applications began transmitting on the internet.Different applications have different QoS requirements,more and more people begin to pay attention to how to manage Qos.However,due to limitations of traditional network architecture for QoS improvement is limited.The traditional network can not fully meet the demand for new services for QoS.In 2009,Stanford University presents the software defined network,it separate the network date layer and control layer.SDN provides new methods to solve the QoS problem.This paper is based on the SDN to solve the QoS problem.In this paper,we use date layer and control layer to solve the problem of the QoS.The date layer includes flow classification,queue management,and queue scheduling.Control layer strategy is the focus of this paper,the control layer of this paper has the following characteristics.(1)By category,link utilization,flow speed of business,giving the right value for the link to complete the routing algorithm improvements.(2)we migrate flow to make full use of the SDN and optimize the time of the routing migration.Finally,we build experiment platform of the software defined network.we proved our QoS strategy is effective,ie the data layer management strategy is effective,the control layer management strategy is effective and our routing policy is better than others.