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Service function chain (SFC) deployment method based on flow splitting

A technology of service function chain and deployment scheme, which is applied in the field of service function chain deployment based on flow splitting, and can solve problems such as low elephant flow acceptance rate and unbalanced network load

Active Publication Date: 2019-03-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned deficiencies in the prior art, a service function chain deployment method based on flow splitting provided by the present invention solves the problems of low elephant flow acceptance rate and unbalanced network load

Method used

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  • Service function chain (SFC) deployment method based on flow splitting
  • Service function chain (SFC) deployment method based on flow splitting
  • Service function chain (SFC) deployment method based on flow splitting

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Embodiment Construction

[0077] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0078] like figure 1 As shown, a service function chain deployment method based on stream splitting includes the following steps:

[0079] S1. Use the DSC algorithm to deploy the sub-chain after the service function chain is split, and obtain the sub-chain deployment plan, link queuing delay and deployment cost, such as figure 2 As shown, the specific steps of step S1 are:

[0080] S11. Initialize the variables currentSe...

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Abstract

The invention discloses a service function chain (SFC) deployment method based on flow splitting. During deployment of an elephant flow SFC request, an SFC is split into a plurality of sub-chains fordeployment, so that the elephant flow receptance rate is improved; the excessive queuing delay of mouse flow queued after elephant flow due to network congestion caused by occupation of excessive bandwidth resources by the elephant flow can be relieved; and the quality of service of a data center network is improved. According to a deployment algorithm provided by the invention, a chain with mostremaining bandwidth resources is selected based on a worst-fit strategy for deployment, so that the network congestion can be reduced. During deployment of the SFC with the algorithm provided by the invention, the hops between servers deployed with the virtual network function of the same SFC in the network are minimized to lower the consumption of network bandwidth resources.

Description

technical field [0001] The present invention relates to the field of virtual network technology, in particular to a service function chain deployment method based on stream splitting. Background technique [0002] Network Functions Virtualization (NFV) is a new network framework first proposed by the European Telecommunications Standards Institute (ETSI) in 2012. The main idea of ​​NFV technology is to provide network functions through software on virtual machines. Virtual machines can be placed on general-purpose hardware platforms to replace traditional proprietary network devices, thereby improving network flexibility. When network functions are virtualized, multiple virtual network functions (VNFs) form a service function chain (SFC) in a certain order according to the user's service policy. [0003] Nowadays, cloud service providers (CSPs) use NFV technology to deploy virtual network functions on virtual machines in data centers, so as to more flexibly utilize computin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/803H04L29/08H04L12/46
CPCH04L12/4641H04L47/12H04L47/125H04L67/51
Inventor 孙罡陈振荣虞红芳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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