SWITCH AND METHOD FOR SUPPORTING QOS OF MULTI-TENANT CLOUD SERVICE AND SYSTEM HAVING THE SAME SWITCH

摘要

The present invention relates to a method, device and system for providing a multi-tenant cloud service for guaranteeing quality of service (QOS) for each flow and each virtual machine (VM). A dynamic virtual flow switch according to the present invention may include: a switch flow agent for receiving and storing virtual machine QOS information for each of a plurality of virtual machines operating in a plurality of computer servers and flow QOS information for each flow generated by the virtual machines; and a flow processing unit for determining, upon receiving the flows generated by the virtual machines, QOS priority orders of the flows on the basis of the virtual machine QOS information for the virtual machines that have generated the flows and the stored flow QOS information for the flows.