System for improving software defined network reliability

Abstract

The invention discloses a system for improving software defined network reliability, comprising a network device layer for sending a flow table request and receiving flow table data returned by a preposition layer; the preposition layer for forwarding the flow table request between the network device layer and a control layer and receiving the flow table data returned by the control layer; the control layer for controlling a preposition adapter in the preposition layer to find a suitable control node according to the network topology, state and traffic change, finding the matched flow table data in the control node and returning to the preposition adapter; an application layer for user management and network configuration. According to the invention, the preposition adapter, the controller node, data analysis and storage nodes and a synchronizer are added in the topology of the traditional software defined network, therefore, the reliability and data processing capability of the network system are improved.

Description

technical field [0001] The invention relates to the technical field of network systems, in particular to a system for improving the reliability of a software-defined network. Background technique [0002] In recent years, with the vigorous development of the Internet and mobile smart terminals and the rise of cloud computing services, the current network architecture has gradually been unable to meet the needs of development. Today's network resource configuration is still to configure individual network devices, and the network architecture is complex and difficult to maintain. Software Defined Network (Software Defined Network, SDN) is a new form of network innovation architecture proposed recently. This technology can decouple the control plane and the data plane, that is, the control module in the traditional switch network is stripped, and the relatively complex Control functions are delegated to a centralized, programmable software controller. The software-defined ne...

AI Technical Summary

Problems solved by technology

[0003] Although the software-defined network has the above advantages, it also has many shortcomings in the actual application environment. In the actual network deployment and application, the controller node often exists as a single point, and it is the core node in the entire network. Network devices at the level provide flow table distribution services, so high-frequency flow data requests will cause a sharp increase in the load of the controller, causing the entire network to be abnormal

In addition, the single-point operation of the controller node also puts the network at high risk. When the controller node goes down, the entire network will collapse. If the network configuration information on the controller is lost, the entire network needs to be rebuilt. This loss is difficult estimated

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