A link load balancing method for multi-service flow QoS guarantee in software-defined network

A software-defined network, multi-service flow technology, applied in the field of software-defined network architecture load balancing computing, can solve the problems of not considering network resource utilization, service flow distinction, and underutilization.

Inactive Publication Date: 2020-10-20
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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  • A link load balancing method for multi-service flow QoS guarantee in software-defined network
  • A link load balancing method for multi-service flow QoS guarantee in software-defined network
  • A link load balancing method for multi-service flow 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-service flow QoS guarantee in a software-defined network, and belongs to the technical field of software-defined network architecture load balancing calculation. In the SDN environment, the present invention utilizes the global advantage of SDN centralized control, combines the improved K shortest path algorithm with QoS guarantee, takes the load balance degree of the link as the objective function, and takes the QoS parameters of the service as the constraint condition, in the Choose the best path among the K shortest paths. The present invention realizes the highly differentiated processing of the network for service flow processing, provides resources for different services on demand, and increases the flexibility of the service for network requirements; it can effectively improve the network throughput and flow acceptance rate, and at the same time reduce the selection path The delay and packet loss rate of the link. Therefore, the present invention has obvious advantages in terms of the utilization efficiency of network bandwidth resources; in terms of service quality, it can guarantee the basic service requirements of services requiring service guarantee.

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 Patents(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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