SDN network topology discovery and real-time presentation system and method

Abstract

The present invention provides a system and method for discovering and real-time presentation of SDN network topology. According to the method of the present invention, after the openflow switch joins the SDN network, the connection relationship acquisition module obtains the port connection information between each openflow switch based on the protocol mechanism between the SDN controller and the openflow switch; when an openflow switch leaves the SDN network , the connection relationship obtaining module updates the corresponding port connection information; when the browsing requester needs to browse the SDN network topology, the providing module provides the connection relationship obtaining module with the second interface based on the second interface provided by the second interface module and the first interface provided by the first interface module Send a browsing request; the connection relationship acquisition module feeds back the corresponding port connection information based on the received browsing request; then, the providing module provides the received port connection information to the browsing requester, thereby realizing real-time perception and real-time presentation of network devices .

Description

technical field [0001] The present invention relates to the field of SDN networks, in particular to a system and method for discovering and real-time presentation of SDN network topology. Background technique [0002] Software Defined Network (SDN) is a new innovative network architecture. Its core technology, OpenFlow, realizes flexible control of network traffic by separating the control plane of network equipment from the data plane. The innovation provides a good platform. [0003] The main purpose of network topology discovery is to obtain and maintain the existence information of network nodes and the connection relationship information between network nodes, and draw the entire network topology map on this basis, so that network managers can analyze the network topology based on the topology map. Faulty nodes can be quickly located. [0004] Under the existing network architecture, LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) provides a standa...

AI Technical Summary

Problems solved by technology

[0005] However, under the new SDN network architecture, since network devices will not actively send and receive LLDP data, and will not store information about other devices in the network, how to discover and maintain the topology of the entire network, and how to maintain each Network device information has become a technical issue that SDN network managers need to solve

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