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SDN network topology management method based on point coverage set

A technology of network topology and management method, applied in the field of SDN network topology optimization management, can solve problems such as excessive resource consumption, and achieve the effects of improving operation efficiency, reducing the number, and reducing the number of monitoring

Active Publication Date: 2017-11-03
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[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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  • SDN network topology management method based on point coverage set
  • SDN network topology management method based on point coverage set
  • SDN network topology management method based on point coverage set

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] 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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Abstract

The invention relates to an SDN network topology management method based on a point coverage set. The network topology structure is optimized, and the network topology structure is managed by using the minimum network overhead. The topology structure of the whole network is obtained by a network topology management module in a controller, then the topology structure is abstracted and simplified into an undirected graph, the point coverage set having the minimum degree is figured out, the number of measurement points in a network topology management process is reduced as much as possible, thereby reducing the number of measurement data packets and performing optimized management on the network topology structure. By adoption of the method, the controller manages the network topology and does not need to periodically send an LLDP message to each switch in the network, thereby not only reducing the number of Packet-Out messages carrying the LLDP messages sent by the controller, but also greatly reducing the monitoring number of corresponding Packet-In messages of the controller, and saving the ability for processing other network works of the controller, and then the operation efficiency of the network is improved.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/12Y02D30/00
Inventor 蔡志平李阳
Owner NAT UNIV OF DEFENSE TECH
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