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A QoS control method and system based on of-diffserv model

A control method and technology for a control system, applied in the field of QoS control methods and systems based on OF-DiffServ model, can solve the problems of lack of self-adaptability, only considering the influence of transmission link switch nodes, and cannot provide QoS guarantee, etc. The effect of stability

Active Publication Date: 2021-03-30
SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some disadvantages in QoS guarantee in the SDN network, such as the inability to provide dynamic QoS guarantee, lack of adaptability, and only considering the transmission link while ignoring the influence of the switch node itself

Method used

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  • A QoS control method and system based on of-diffserv model
  • A QoS control method and system based on of-diffserv model
  • A QoS control method and system based on of-diffserv model

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Embodiment Construction

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0032] Such as figure 1 Shown, a kind of QoS control method based on OF-DiffServ model includes:

[0033] S101. Send each service flow entering the SDN network to the controller through the edge node of the OpenFlow switch.

[0034] The controller uses SSH to interact with the OpenFlow switch, that is, the southbound interface of the controller uses the SSH protocol to send CLI commands to the bottom node, and the corresponding CLI command executes the corresponding control script on the switch node and returns the data file.

[0035] S102. Use the controller to classify each service flow, and set different priorities for different types of service flows, wherein service flows with the same priority have the same T...

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Abstract

The invention discloses a QoS control method based on an OF-DiffServ model and a QoS control system thereof. The method comprises the steps that S1, each service flow entering an SDN is transmitted to a controller through the edge node of an OpenFlow switch; S2, all the service flows are classified through the controller and different priority and ToS values are set for different classes of service flows; S3, each service flow is put in the corresponding queue of its own priority; S4, the ToS value of each service flow is updated according to the network state information of the SDN, the ToS value updating rules and the QoS requirements of each service flow every hop for adjusting the priority of each service flow, and the process returns to perform the step S3. The beneficial effects of the QoS control method and the QoS control system are that the classes of the data flows can be adaptively adjusted according to the idle situation of the data flow and the queue of each port, the entered queue of the flows can be adjusted in real time, the network resources can be fully utilized, and the stability of the network performance can still be maintained when the number of the flows of high priority is high.

Description

technical field [0001] The invention relates to the field of data stream processing, in particular to a QoS control method and system based on an OF-DiffServ model. Background technique [0002] In recent years, with the rapid development of network technology and the increasing variety of services, the demand for network bandwidth capacity is increasing, which makes people have higher and higher requirements for Quality of Service (QoS). The ever-increasing network data traffic, the number of network devices, and operating costs have made the traditional Internet with the IPv4 protocol as its core technology face more and more serious technical challenges. The traditional network architecture has exposed more and more disadvantages. It cannot meet the service quality requirements of various new businesses. Software-defined network (Software Defined Network, SDN), a new type of network architecture, has received more and more attention. [0003] At present, there are still...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/851
CPCH04L47/24H04L47/2408H04L47/2433H04L47/2441
Inventor 王鹏张新常王鲁唐绍炬史慧玲
Owner SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN