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Link load balancing method for multi-business stream QoS guarantee in software defined network

A software-defined network and multi-service flow technology, which is applied in the field of software-defined network architecture load balancing computing, can solve the problems of not considering the utilization rate of network resources, not distinguishing between business flows, and not fully utilizing them, so as to improve network throughput and traffic flow. The effects of acceptance rate, reduced delay, and increased flexibility

Inactive Publication Date: 2018-04-20
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, there are three problems in the existing literature on the combination of the two under the SDN network architecture: (1) the advantages of SDN centralized control and global view are not fully utilized; Differentiate different service flows in the network; (3) simply aim at improving service QoS, without considering the utilization rate of network resources

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  • Link load balancing method for multi-business stream QoS guarantee in software defined network
  • Link load balancing method for multi-business stream QoS guarantee in software defined network
  • Link load balancing method for multi-business stream QoS guarantee in software defined network

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Embodiment Construction

[0066] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0067] 1. Multi-service flow load balancing physical model diagram

[0068] see figure 1 , the physical model is divided into two layers, the control layer and the data device layer. The control layer is responsible for the control and decision-making of switches and stream transmission. Each controller is responsible for a certain number of switches. The controllers use the east-west interface protocol for communication; the data device The layer is mainly responsible for flow forwarding, and the OpenFlow protocol is used for communication between the controller and the switch. When different service flows enter the network, the controller calculates and formulates a forwarding path that satisfies a specific load balancing strategy based on the network status and flow information, and the s...

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Abstract

The invention discloses a link load balancing method for multi-business flow QoS guarantee in a software defined network and belongs to the technical field of software defined network architecture load balancing computing. According to the method, in an SDN environment, through utilization of the global advantage of SDN centralized control, improved K shortest paths algorithms and QoS guarantee are combined, and the optimum path is selected from k shortest paths by taking load balancing degree of a link as a target function and taking a QoS parameter of business as a constraint condition. According to the method, the high-differentiation-degree processing of a network for business flows is realized and resources are provided for different business according to demands, so the flexible degree of the business for network demands is increased; the network throughput and a flow receiving rate can be effectively improved, and moreover, the path selection time delay and a packet loss rate ofthe link are reduced. The method has obvious advantage in the aspect of network bandwidth resource utilization efficiency. For the business quality of service, basic business demands of the businessrequiring business guarantee can be ensured.

Description

technical field [0001] The invention belongs to the technical field of software-defined network architecture (Software Defined Network, SDN) load balancing calculation, and specifically relates to a link load balancing method for multi-service flow QoS guarantee in a software-defined network. Background technique [0002] QoS means that the network can use various technologies to solve network delay and congestion problems, and provide better service capabilities for designated network communications. Link resources can flexibly adjust the traffic load in the network to adapt to changes in network traffic according to current business needs and link conditions. Link load balancing distributes traffic transmission on network links in a relatively balanced manner, thereby improving network traffic. performance and streaming quality. [0003] Due to network equipment and environmental constraints, traditional network link load balancing algorithms (random algorithm, round robi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/725H04L12/733H04L12/803H04L45/122
CPCH04L45/122H04L45/123H04L45/302H04L47/125
Inventor 赵季红苏珂嫄曲桦蔡田杰罗金樊斌
Owner XIAN UNIV OF POSTS & TELECOMM
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