Data processing method, device and system

Abstract

The embodiment of the invention discloses a data processing method, device and system. The method comprises the following steps that: a controller receives a synchronous request message, wherein the synchronous request message is a message for a switch to request for synchronization of a first flow table entry on the controller onto the switch, and the first flow table entry is a flow table entry transmitted by the controller to the switch before the reception of the synchronous request message; the controller acquires the first flow table entry according to the synchronous request message; and the controller transmits the first flow table entry to the switch. Through adoption of the method and the system, flow table entry synchronization between the controller and the switch can be realized; the phenomenon of asynchronization of flow table entries between the controller and the switch due to the loss of the flow table entries in the switch is avoided; an automatic error correction function in a data transmission process is added; and the security of network equipment information interaction is enhanced.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a data processing method, device and system. Background technique [0002] With the rapid development of the Internet and the increasing demand for new Internet services, the OpenFlow network, as a new network switching model, has played a huge role in promoting the innovative development of the network, making it more and more concerned and supported. [0003] OpenFlow network includes switch, controller Controller and network virtualization layer FlowVisor. Among them, the switch is the core component of the entire OpenFlow network, which mainly manages the forwarding of the data layer. It consists of three parts: flow table, security channel and OpenFlow protocol. The switch includes a dedicated OpenFlow switch and a switch that supports OpenFlow. The controller implements the functions of the control layer, manages and controls the OpenFlow switch throug...

AI Technical Summary

Problems solved by technology

[0004] After the controller sends flow entries to the switch through the existing OpenFlow protocol, when the switch is processing the flow entries, the process of processing OpenFlow protocol packets and the process of processing flow entries inside the switch are not the same process, but the process Data packet loss may occur in the inter-communication, resulting in the loss of flow entries, so that the flow entries of the switch and the flow entries of the controller are out of sync.

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