Flow management method capable of being sensed by QoS (Quality of Service) in software defined network

A software-defined network and traffic management technology, which is applied in the field of QoS-aware traffic management in software-defined networks, can solve the problems of traditional networks that are powerless and the sensitivity of data time is small, so as to ensure transmission quality, increase perception, and guarantee The effect of smooth transmission

Active Publication Date: 2017-05-31
SUZHOU INST FOR ADVANCED STUDY USTC
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Problems solved by technology

However, although the data used for program data synchronization in enterprise servers is huge, it can bring a lot of pressure to the network, but this part of the data is

Method used

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  • Flow management method capable of being sensed by QoS (Quality of Service) in software defined network
  • Flow management method capable of being sensed by QoS (Quality of Service) in software defined network
  • Flow management method capable of being sensed by QoS (Quality of Service) in software defined network

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Embodiment

[0032] Such as figure 1 As shown, the QoS-aware traffic management method in the software-defined network (SDN) of the present invention mainly includes several steps of traffic identification, dynamic routing, traffic scheduling and traffic speed regulation. Specific steps are as follows:

[0033] (1) In the software-defined network (SDN) environment, the application on the upper layer of the network sends the quality of service (QoS) requirements to the network;

[0034] (2) The network checks the application QoS requirements, and divides the application traffic into several categories with different priorities;

[0035] (3) the network identifies the traffic in step (2), and arranges routing for different types of traffic;

[0036] (4) The network monitors the utilization rate of all links, and performs traffic scheduling on congested links;

[0037] (5) Carry out rate limitation to the link that is still congested after traffic scheduling in step (4);

[0038] Traffic ...

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Abstract

The invention discloses a flow management method capable of being sensed by QoS (Quality of Service) in a software defined network. The flow management method comprises the following steps: sending a QoS requirement to the network through network upper-layer application of the software defined network; inspecting an application service quality request by the network and dividing application flow into a plurality of classes with different priority levels; identifying the application flow and carrying out different routing on the application flow with different classes; monitoring utilization rates of all links and carrying out flow scheduling on a congestion link; carrying out flow limitation on the congestion link subjected to the flow scheduling. According to the flow management method, different QoS strategies are adopted on data flows with different requirements; the data with a high priority level is subjected to priority processing and flow in the network is discriminately treated; critical business flow smoothly passes through the network.

Description

technical field [0001] The present invention relates to a flow management method in a software-defined network, in particular to a QoS-aware flow management method in a software-defined network. Different traffic scheduling and flow rate control methods are adopted for different types of business traffic, and differentiated QoS policies are implemented. Background technique [0002] Ensuring the quality of service (Quality of Service, QoS) of the network is a complex issue. Generally, traditional networks treat data streams indiscriminately, provide services according to the principle of best effort (best-effort), and pursue the maximization of throughput. Different applications have very different requirements for network service quality. For example, in an enterprise private network, the amount of data in daily operations (access, storage, etc.) of customers is small, and its network delay will directly affect user experience. However, although the data used for program ...

Claims

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Application Information

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IPC IPC(8): H04L12/725H04L12/729H04L12/851H04L45/125
CPCH04L45/125H04L45/302H04L45/306H04L47/2408H04L47/2433
Inventor 黄刘生雷经徐宏力
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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