Communication method, system thereof, resource pool management system, switches, and control device

Abstract

The present invention provides a communication method of an SDN, a system thereof, a resource pool management system, switches, and a control device. The communication method comprises a step of obtaining the network attributes of virtual machines configured by the a resource pool management system according to the operation of a network resource pool by a user, a step of translating tenant network topology information obtained from the network attributes as a flow table when a first virtual machine and a second virtual machine communicate for the first time, and a step of issuing the flow table to the switches corresponding to the virtual machines such that the packet between the first virtual machine and the second virtual machines is discarded in the first time communication and subsequent communication when the switches judges that the first virtual machine and the second virtual machine can not communicate. According to the communication method, the broadcast of an ARP message to a whole network by a controller can be avoided, the packet_in packet sent to an SDN controller can be reduced, thus the network resources in the SDN can be fully utilized, and the resource pressure of the network and the controller can be eased.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a SDN (Software Defined Network) communication method, system, resource pool management system, switch and control device. Background technique [0002] Software-Defined Networking (SDN) is the most popular future network technology in recent years, and it is also a popular candidate network form for enterprise networks, campus networks, and data center networks. Its core idea is to separate the data plane and the control plane, and use a remote controller to centrally manage and control the network. [0003] In an SDN network, network control and forwarding are separated and handled by dedicated devices. Network forwarding is completed by a proprietary SDN switch based on OpenFlow. The control function of the network is completed by the SDN controller based on OpenFlow, and the controller completes the calculation of basic network functions, such as topol...

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Problems solved by technology

[0007] However, in the above packet_in sending mechanism, the switch will send a large number of packet_in messages to the SDN controller, which limits the performance of the SDN controller and reduces the network scale

[0008] Secondly, in the above-mentioned mechanism where the SDN controller broadcasts to the entire network, the SDN controller generates a large number of broadcast messages, which causes a waste of network resources, puts pressure on the resources of the network and the controller, and reduces the network scale.

[0009] In addition, under the existing SDN network architecture, cloud computing data center resource pool management systems (such as Openstack, VMWare, Microsoft, Citrix, etc.) pass to the network

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