Data center network flow scheduling method based on SDN (Software Defined Network)

A data center network and traffic scheduling technology, applied in the network field, can solve problems such as low latency, achieve low latency requirements, high throughput requirements, and reduce packet loss

Active Publication Date: 2022-05-06
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an SDN-based data center network traffic scheduling method to solve the problems in the prior art of e

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  • Data center network flow scheduling method based on SDN (Software Defined Network)
  • Data center network flow scheduling method based on SDN (Software Defined Network)
  • Data center network flow scheduling method based on SDN (Software Defined Network)

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Embodiment Construction

[0031] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0032] Aspects of the invention are described herein with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present invention are not limited to those shown in the drawings. It should be understood that the present invention can be realized by any one of the various concepts and embodiments described above, as well as the concepts and embodiments described in detail below, because the disclosed concepts and embodiments of the present invention are not limited to any implementation Way. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0033] Such as figure 2 As shown in the flow chart of the present invention, the topology discovery...

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Abstract

The invention discloses an SDN (Software Defined Network)-based data center network flow scheduling method, which comprises the following steps that: an SDN controller in a network periodically sends a Packet Out message containing an LLDP (Link Layer Description Protocol) frame to a switch, and the switch receives the Packet Out message and feeds topological information back to the SDN controller; the SDN controller periodically analyzes and updates the topology information to obtain network topology and link state information; and based on the obtained network topology and the state information of each link, the SDN controller judges whether each link is congested or not by calculating the link bandwidth of each link for the data flow to be distributed on each link, and if not, an ECMP routing algorithm is selected for routing. If so, judging whether the type of the current to-be-distributed data stream is a long stream or a short stream, and distributing transmission paths for the long stream and the short stream respectively; and installing a corresponding flow table item for each switch in the path along the way to complete the flow scheduling of the data flow to be distributed.

Description

technical field [0001] The invention relates to the field of network technology, in particular to an SDN-based data center network flow scheduling method. Background technique [0002] In recent years, with the rapid development of technologies such as big data, cloud computing, and virtualization, more and more data and related applications have been converged to the data center for processing, and the traffic in the data center network has shown a rapid growth trend. And it also shows some new traffic characteristics, mainly reflected in the increase of "east-west" traffic and the decrease of "north-south" traffic in the data center network, and there are two different types of traffic, elephant flow and mouse flow. Among them, the elephant flow is generally the traffic generated by bandwidth-sensitive applications, and the amount is relatively small, but it carries most of the data volume in the network, and has high requirements for network throughput and bandwidth; whil...

Claims

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Application Information

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IPC IPC(8): H04L45/30H04L45/125H04L45/121H04L47/125H04L47/2441H04L43/0882G06N3/00H04L45/76
CPCH04L45/306H04L45/125H04L45/121H04L47/125H04L47/2441H04L43/0882G06N3/006
Inventor 郭永安田丰王禹博佘昊钱琪杰
Owner NANJING UNIV OF POSTS & TELECOMM
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