Research On OpenFlow Network Improving Method Based On OpenStack Platform

With development of the Internet in today's society, cloud computing, big data, new technologies Internet and industrial 4.0 ideas are increasing maturly, the traditional management architecture mode can not meet the demand of development of the cloud computing emerging business. Therefore, this article is based on OpenFlow technology, analyzing the SDN (Software Defined Network) Networking architecture and Networking protocol, through the analysis is found that the OpenFlow Network architecture controller will centralize to control function and operation currently, which will cause the load of controller too excessive, and when the OpenFlow Network technology application used in the data center of cloud computing, tens of thousands servers and business will let the controller in the dangerous state,which is not conducive to the safe and stable operation of the Network. Through simulation experiment method, this paper uses MiniNet network, processes the model of OpenFlow network packets, which increases the ability of switch controling ARP, ICMP protocol for OpenFlow, and implemented the function of SDN controller initialization and routing. With researching work in this paper improves the ability of through and put of Cloud computing data center network and lateral flow interaction, specific work is as follows:(1)This paper studies with the basic concepts of SDN and OpenFlow, network architecture, cloud computing applications, which is analysised and carried the researching on the related equipment manufacturers. At the same time, on the basic of 7 CentOS Linux system, using the VMwareVsphere which builds its cloud platform virtual machine, configurats the installation of mirror and other related services; configurats Network, dashboard, block storage and object storage components, such as adding; configurats Service Orchestration module, Telemetry module and all kinds of database.(2)Based on the platform of network SDN which works on OpenFlow simulation, is building the model of OpenFlow network, the component interaction OpenFlow is researched by the OpenFlow switch on the cloud platforms emphatically, focus on forwarding details of OpenFlow controller in the data processing. Putting forward the ARP protocol and the function of ICMP protocol into the plane of OpenFlow switch. By reaching the theory of ARP and ICMP protocol,modifies the source of Open vSwitch, so OpenFlow switches have the ability to handle the ICMP and ARP protocol, and linking initialization module and routing processing component which is added to the controller, it also has the simple routing functions, such as query shortest route paths. Finally, after the establishing of Mininet simulation network, OpenFlow switch connects with NOX control,making NOX controller initialization and the lookup function of routing come ture.