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Method of providing cross-layer QOS based on application awareness in multi-tenant SDN network

An application-aware, multi-tenant technology, applied in the field of network services, which can solve problems such as bandwidth abuse, discarding, and competition, and achieve the effect of resolving policy conflicts

Active Publication Date: 2020-05-22
SHANGHAI JIAO TONG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are following problems in such a complex network: 1) bandwidth abuse and competition
Inevitably, due to lack of service level awareness, QoS policy conflicts, which means that packets with lower priority but higher service level may be incorrectly dropped

Method used

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  • Method of providing cross-layer QOS based on application awareness in multi-tenant SDN network
  • Method of providing cross-layer QOS based on application awareness in multi-tenant SDN network
  • Method of providing cross-layer QOS based on application awareness in multi-tenant SDN network

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0039] The method for providing cross-layer QoS based on application awareness in a multi-tenant SDN network provided by the present invention includes the following steps:

[0040] Step 1: Establish a service mechanism for cross-layer application awareness to ensure QoS;

[0041] Step 1.1: Collect information on the implicit QoS requirements of each layer of the OSI model; specifically, use an instance of DPI to determine the behavior of each flow, and integrate the instance of DPI (Deep Packet Inspect...

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Abstract

The present invention provides a method for providing cross-layer QoS based on application awareness in a multi-tenant SDN network, including step 1: collecting information on the implicit QoS requirements of each layer in the OSI model; step 2: sharing information related to QoS requirements ; Step 3: Map the QoS requirements based on the method of weight optimization function, and adopt a unified cross-layer service priority; the cross-layer service priority is independent of any other priority in the heterogeneous network; Step 4: combine the unified The cross-layer service priority is written into the flow table and distributed to the OpenFlow switch. When the data packet arrives, OpenFlow completes the flow table matching operation and executes the QoS policy. The method in the present invention can significantly improve the control granularity of the OpenFlow protocol, and can support multiple SDN controllers synchronously.

Description

technical field [0001] The present invention relates to the technical field of network services, in particular to a method for providing cross-layer QoS (Quality of Service, Quality of Service) based on application awareness in a multi-tenant SDN network. Background technique [0002] SDN (Software Defined Network, software-defined network) has always been a significant research field in the next generation network. In SDN, network intelligence is usually decoupled centrally from the data plane and SDN controller, which can simultaneously monitor and control the network state (logic) with standardized interface protocols such as OpenFlow. The foreseeable application of this innovative model is driving extensive research in both academia and industry. Research conducted in the last few years has shown that SDN will have to support heterogeneous network access and multi-tenant deployments to meet the envisaged needs. In a multi-tenant heterogeneous environment, data generate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L29/08
CPCH04L41/0823H04L43/0876H04L67/61
Inventor 伍军李高磊赵程程何珊李建华郭龙华陈璐艺李高勇
Owner SHANGHAI JIAO TONG UNIV
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