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A data flow control method and system

A control method and data flow technology, applied in the network field, can solve the problems that are not conducive to improving network performance, and increase the burden on switches and controllers.

Active Publication Date: 2020-04-21
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

In the case of heavy network load, these real-time monitoring and additional computing work will further increase the burden on switches and controllers, which is not conducive to improving network performance

Method used

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  • A data flow control method and system
  • A data flow control method and system
  • A data flow control method and system

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Embodiment Construction

[0036] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] In the SDN network, when data arrives at the switch, the switch will look up the routing table entries in its data flow table cache. If there is a matching data flow entry, take the corresponding action, such as forwarding to a specific port. If there is no match, the first packet is sent to the controller. The controller calculates the forwarding path according to the global view, and delivers it to all the switches involved in the path. For the data flow or the subsequent data packets of the same type of data flow, each switch in the forwarding path will forward according to the data flow entries installed therein. The data flow entry in the data flo...

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Abstract

The present invention relates to the communications field, and discloses a data flow control method and system. The method includes the steps of calculating a data flow table request amount of each switch node in a software-defined network (SDN); and optimizing a weight of each link in the SDN according to a convergence cost of each switch node and the data flow table request amount of each switch node, so as to balance data flows of all switch nodes. According to the data flow control method, routing optimization is performed on the network data flow, so that load balancing among switches in the network is realized, a limited flow table processing capability and a flow table cache space are fully used, and the use efficiency of network resources is improved.

Description

technical field [0001] The present invention relates to the network field, in particular to a data flow control method and system. Background technique [0002] In the software-defined network SDN, the switching device performs high-speed data forwarding according to the flow table on the data plane, and the controller is responsible for routing calculation, flow table generation and maintenance on the control plane, so that network resources can be allocated more reasonably. SDN aims to realize the definition and open interface of network interconnection and network behavior, so as to support the innovation of various new network architectures and new services in the future. Different from the thin-waisted architecture of the original TCP / IP, SDN migrates the control function from the traditional distributed network equipment to the controllable computing equipment, and finally realizes the automatic control function of the network through the open and programmable software...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/803
CPCH04L47/125
Inventor 李莉黄婧洁陈建亚刘韵洁
Owner BEIJING UNIV OF POSTS & TELECOMM
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