A SDN network topology management method based on point coverage set
A network topology and management method technology, which is applied in the field of SDN network topology optimization management, can solve the problem of excessive resource consumption, and achieve the effects of improving operating efficiency, reducing the number, and reducing the number of monitoring
Active Publication Date: 2020-07-17
NAT UNIV OF DEFENSE TECH
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[0005] The technical problem to be solved by the present invention is to solve the problem of excessive resource consumption by the controller in the process of network topology management in the current emerging SDN network architecture
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[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0048] figure 1 It is a working flowchart of the topology management method of the present invention. It can be seen from the figure that in the SDN network topology management method proposed by the present invention, it is first necessary to obtain the current network topology from the controller. This process can be performed after the network initialization is completed, because the controller will obtain the topology structure of the entire network covered by it by sending LLDP packets during the network initialization process. In addition, the Port-Status message from the switch is not monitored, and if it is found that the topology structure changes within a management cycle, the obtained topology structure must be updated immediately. Then, the corresponding undirected graph is abstracted according to the obtained topology structure, the switches a...
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The invention relates to an SDN network topology management method based on a point coverage set. The method of optimizing the network topology is used to manage the network topology with the least network overhead. Obtain the topology structure of the entire network through the network topology management module in the controller, then abstract and simplify it into an undirected graph, and find the point coverage set with the smallest degree, so as to minimize the number of measurement points in the network topology management process, thereby reducing the measurement data The number of packets can achieve the purpose of optimizing the management of the network topology. This method enables the controller to manage the network topology, and no longer needs to periodically send LLDP messages to each switch in the network, which not only reduces the number of Packet-Out messages carrying LLDP messages sent by the controller, but also It greatly reduces the number of controllers monitoring the corresponding Packet-In messages, saves the ability of the controller to process other network work, and thus improves the operating efficiency of the network.
Description
technical field [0001] The invention relates to an SDN network topology optimization management method based on a point coverage set with the smallest degree sum in the network topology. Background technique [0002] SDN (Software Defined Networking) is a new type of network architecture. Its design concept is to decouple the control plane and data forwarding plane in traditional networks, so as to realize the separation of network control plane and data forwarding plane in the true sense, and Provide a software-programmable interface to the third party to realize the real management of the network through software. The OpenFlow protocol is a popular southbound interface standard of the SDN architecture. It defines some message processing rules for the control plane and the data forwarding plane. The SDN network based on the OpenFlow protocol is a relatively mature implementation method under the current situation, and it regulates the control plane. Detailed message commun...
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IPC IPC(8): H04L12/24
CPCH04L41/12Y02D30/00
Inventor 蔡志平李阳
Owner NAT UNIV OF DEFENSE TECH