Forwarding rule configuration method and device for software defined network

Abstract

The embodiment of the invention provides a forwarding rule configuration method and device for a software defined network. The specific implementation way of the method is as follows: acquiring characteristic information of all flow tables of each switch in the software defined network, and determining a flow table priority of each flow table according to the characteristic information of all flow tables; acquiring all data streams in the software defined network, and determining a data stream priority of each data stream according to user and / or business requirements of all data streams; and placing a forwarding rule of each data stream into a corresponding flow table according to the data stream priority of each data stream and the flow table priority of each flow table. The forwarding rule configuration method and device for the software defined network provided by the embodiment of the invention can select the flow table that the data forwarding rule needed to be placed in the switch for each data stream, and improve the quality of network services.

Description

technical field [0001] The present invention relates to the field of software-defined networks, in particular to a method and device for configuring forwarding rules for software-defined networks. Background technique [0002] Software Defined Network (Software Defined Network, SDN) separates the control plane from the forwarding plane, breaks the closure of traditional network switch / router design, improves the programmability of network management, and reduces the complexity of network switch / router. The controller can communicate with the switch and the management application through two different interfaces respectively. The interface for communicating with the management application provides network function calls for upper-layer applications, and the interface for communicating with the switch can shield the differences between different switches. [0003] Among them, the difference of the flow table is one of the main differences of different switches. The differenc...

AI Technical Summary

Problems solved by technology

In the existing SDN, similar to the traditional network, it is still mainly to select different paths and queues to distinguish different needs of different users and services, and does not use different flow tables to store data forwarding rules according to the delay of each flow table , which will cause the rules of the data flow with low latency requirements to be placed in the slow query flow table due to the exhaustion of the fast query flow table, and the slow query flow table stores a large amount of data that can tolerate higher latency flow rules, resulting in lower network quality of service

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