Implementation method of central database cdb and sdn switch based on cdb

Abstract

The present invention discloses a central database CDB implementation method and a CDB-based SDN switch, wherein the CDB implementation method includes: first, defining the CDB syntax, that is, abstracting various types of CDB entities according to the requirements of the switch, and each CDB entity is equivalent to Based on a node, all types of nodes are formed into a hierarchical directory tree; then, the CDB outline is defined according to the CDB syntax; finally, the database API of C code is automatically generated according to the CDB outline. The implemented CDB can provide a CDB configuration service and a CDB data synchronization service. The CDB of the present invention provides a unified interface format, improves the openness and compatibility of the southbound programming interface of the SDN exchange, and has higher operation efficiency than the traditional database.

Description

technical field [0001] The present invention relates to the technical field of SDN switches, in particular to a method for implementing a central database CDB and a CDB-based SDN switch. Background technique [0002] The traditional network equipment is a closed system, the equipment manufacturer has taken over the hardware and software of the whole equipment, and it is impossible or difficult for users to program it. As user requirements of network devices change more and more frequently, the programming interfaces provided by traditional closed network devices cannot meet these new requirements. Network equipment had to be transformed to adapt to the new requirements, and so the concept of SDN (Software Defined Networking) emerged. [0003] The core of SDN is to allow customer applications to participate in network control and play a controlling role, rather than allowing network devices to decide network forwarding behavior on their own. ONF (Open Network Foundation, Op...

AI Technical Summary

Problems solved by technology

The features supported by existing traditional switches are very rich. Each feature is organized into an array and lacks a uniform interface. If these features are listed on a plane, it is difficult to retrieve, and without using database technology, the program maintains its own private data structure to save data

Moreover, although the existing databases provide programming interfaces (Create / Update / Delete / Read) with fixed rules, and the data in the databases are all neatly stored in tables (Tables), the general overhead is relatively large, and compared with native C code is very inefficient and not suitable for embedded devices such as switches

[0005] In view of the fact that there is no unified mechanism in the existing technology to generate a structured southbound programming interface, and the efficiency of traditional databases is much lower than that of native C codes

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