Elephant flow path monitoring and scheduling method based on SDN data center network

A data center network and scheduling method technology, applied in the field of elephant flow path monitoring and scheduling, can solve problems such as link congestion, reduce signaling overhead, etc., to reduce link congestion problems, reduce signaling overhead, reduce The effect of small computational overhead

Active Publication Date: 2020-03-27
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a method for monitoring and dispatching elephant flow paths based on an SDN data center network. Link congestion caused by untimely updates

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  • Elephant flow path monitoring and scheduling method based on SDN data center network
  • Elephant flow path monitoring and scheduling method based on SDN data center network
  • Elephant flow path monitoring and scheduling method based on SDN data center network

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Embodiment Construction

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] see figure 1 As shown, the elephant flow path monitoring and scheduling method based on the SDN data center network provided in this embodiment adopts a network architecture in which the control plane and the data plane are separated, and the SDN controller performs centralized management to realize the topology discovery of the entire network , link detection, flow table delivery and path calculation; the switches used are all switches that support the OpenFlow protocol, and the default flow table is sent to the switch in advance. During the flow, the data flow can be reported to the SDN controller for processing; the identification of the mouse flow and the elephant flow is mainly identified on the terminal host.

[0040]...

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Abstract

The invention discloses an elephant flow path monitoring and scheduling method based on an SDN (Software Defined Network) data center network, which specifically comprises the following steps: when aswitch receives a data flow, if the data flow is an elephant flow, the data flow is packaged into a Packet _ in message and reported to a controller; the controller selects a path for the elephant flow for transmission by adopting a path evaluation method, and adds a link on the path through which the elephant flow passes into a link monitoring table; the controller regularly checks the load condition of each link in the link monitoring table, when the load of a certain link exceeds a certain threshold value, an elephant flow is selected to be scheduled to other paths, and the link monitoringtable is updated; and meanwhile, the controller dynamically adjusts the link detection period according to the load condition of each path in the link monitoring table. According to the method, the signaling overhead and the effectiveness of the link state information collected by the controller can be balanced, the problem of link congestion caused by untimely updating of the link state information is reduced, meanwhile, the computing resources of the controller are saved, and the signaling overhead is reduced.

Description

technical field [0001] The present invention relates to the technical field of data center networks, in particular to a method for monitoring and dispatching elephant flow paths based on SDN data center networks. Background technique [0002] With the rise of technologies such as cloud computing, data centers have received extensive attention from industry and academia in recent years. The statistics and analysis of the traffic in the real data center network show that there are two different types of traffic in the data center network, which are called mouse traffic and elephant traffic. Among them, the number of rat traffic in the data center network is huge, accounting for 80%, but it carries no more than 10% of the data volume, and the duration is relatively short. Rat traffic is usually generated by applications such as web search engines, which affects the transmission delay. There are certain requirements; the proportion of elephant flow in the data center network is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/26
CPCH04L43/0888H04L47/12
Inventor 董守玲黄冰
Owner SOUTH CHINA UNIV OF TECH
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