SDN network programming method and device and readable computer storage medium

Abstract

The invention discloses an SDN network programming method and device and a readable computer storage medium, and the method comprises the steps: determining the fine granularity of a network function module; determining whether the first network function module and the second network function module conform to the connection relationship, and if yes, connecting the first network function module and the second network function module; wherein the output slot position of the first network function module records the input slot position and the object pointer of the second network function module; the input slot position of the second network function module records the output slot position and the object pointer of the first network function module. According to the SDN network programming method, a network application is abstracted into a combination mode of a plurality of modules, and the combination mode between the modules is specified through a lookup table built in the modules, so that the next module for processing a data packet is flexibly selected by dynamically modifying the content of the lookup table, and therefore, online updating of the network application is supported, and interruption of the service flow is avoided.

Description

technical field [0001] The present invention relates to the technical field of software-defined network, in particular to an SDN network programming method, device and computer-readable storage medium. Background technique [0002] The Internet has become the infrastructure of modern society. The traditional network solidifies the control logic in the distributed network equipment, which makes the control and management difficult, and the equipment is bloated and rigid. Software-defined networking (SDN) adopts an open system architecture in which the data plane and the control plane are separated, and the underlying network devices are unified and abstracted, and data packets are processed in the form of a match+action pipeline. The remote controller controls and manages the entire network through a unified southbound programming interface (such as OpenFlow). [0003] However, the early SDN network applications were mainly developed and deployed based on the open source co...

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, the logical relationship (directed edge) between the network function modules has been fixed and determined through the configuration file before the network programming system framework is started, and cannot be changed during operation

This means that the shape of the data forwarding flow graph corresponding to the network application cannot be changed during operation

Therefore, this directly leads to the inability of a single complex network application to be modified or upgraded online (that is, to dynamically change the forwarding flow graph)

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