Distribution type flow table matching method based on software definition in multi-identification network system

Abstract

The invention provides a distribution type flow table matching method based on software definition in a multi-identification network system, and the method comprises the following steps: S1, separating control and forwarding of a multi-identification router to form a three-layer multi-identification routing architecture comprising an application layer, a control layer and a forwarding layer; S2, realizing unification of network packet formats through a multi-identifier network packet coding mode; S3, setting a distribution type flow table structure, and controlling a flow table jumping direction through distribution of table-id and a next table-id field of a table item; S4, carrying out matching on the distributed flow tables in the multi-identifier router; S5, when the forwarding layer receives the network packet which cannot be processed, sending the content of the network packet through the packet-in information. According to the method, the requirement of cross-identification-domain routing addressing in the multi-identification network can be met, automatic deployment and maintenance of complex topology can be supported conveniently, and the method has higher routing convergence speed and lower router load.

Description

technical field [0001] The invention relates to a flow table matching method, in particular to a software-defined distributed flow table matching method in a multi-identity network system. Background technique [0002] As the forwarding entity of the data plane of the multi-identity network architecture, the multi-identity router is the actual execution entity of the multi-identity routing policy. The biggest difference between multi-identity routers and traditional routers is that in addition to traditional IP identification, it also supports multiple network identifications. The network topology composed of multi-identification routers allows multiple identification transmission methods to coexist in parallel to meet different demand scenarios. [0003] The existing multi-identity router implementation scheme first proposes a unified hierarchical identification naming rule, and then introduces a multi-identity inter-translation table (Inter Translation Base, ITB) into the ...

AI Technical Summary

Problems solved by technology

[0005] The current multi-identity router design is based on mutual translation technology. The basic routing and forwarding table used for forwarding is statically configured. Once the network topology is changed to a certain extent, it needs to be reconfigured. If the topology changes a lot, the workload will be huge, and there is no automatic Deployment options and programmable management

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