Virtual network topology construction and dynamic change method

Abstract

The invention discloses a virtual network topology construction and dynamic change method, which comprises the following steps of: 1) using a graph structure G = < V, E>; describing a virtual network topology structure; storing graph structure G attribute information by adopting a class data structure, wherein the graph structure G attribute information comprises a network topology unique number, a network topology name, graph structure information, a vertex list, the number of vertexes and the number of edges; 2) creating a virtual basic network bridge and a virtualization device corresponding to the node according to the description information of the virtual network topology structure, determining all network card information corresponding to each vertex, and connecting each virtual network card in the virtualization device to the virtual basic network bridge; 3) starting the virtualization equipment, and setting network card information of the virtualization equipment according to the edge attributes; 4) according to edge attributes in the virtual network topology structure description information, obtaining network card names of starting points and ending points of all edges, and sequentially adding the network card names to an OpenFlow flow table; and 5) network topology change comprising network node change and network connection relation change.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a virtual network topology construction method in a network simulation platform, in particular to a virtual network topology construction and dynamic change method in a network simulation platform. Background technique [0002] With the rapid development of Internet technology, Internet information security issues have become increasingly prominent. The network simulation platform aims to provide users with an almost real virtual network environment. Users can conduct network security experiments under the network simulation platform to improve network security skills. Similar to cloud computing technology, the network simulation platform provides users with virtual resources, including virtual network resources, virtual computing resources, virtual storage resources, etc. Among them, the construction of virtual network resources is "software-defined network" (SDN), ...

AI Technical Summary

Problems solved by technology

This requires the network simulation platform to have the ability to compare virtual network topologies, calculate differences between different virtual networks, and continue to build on the basis of existing virtual networks. Existing technologies cannot meet this requirement

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