[1]孔祥彬,沈苏彬,李 莉.一种基于 SDN 网络的 QoS 路由选择方案[J].计算机技术与发展,2018,28(02):102-106.[doi:10．3969/j．issn．1673－629X．2018．02．023]
　KONG Xiangbin,SHEN Subin,LI Li.A QoS Ｒouting Scheme Based on Software－defined Networking[J].,2018,28(02):102-106.[doi:10．3969/j．issn．1673－629X．2018．02．023]
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一种基于 SDN 网络的 QoS 路由选择方案()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2018年02期
页码:
102-106
栏目:
智能、算法、系统工程
出版日期:
2018-02-10

文章信息/Info

Title:
A QoS Ｒouting Scheme Based on Software－defined Networking
文章编号:
1673－629X(2018)02－0102－05
作者:
孔祥彬; 沈苏彬; 李 莉
南京邮电大学 计算机学院、软件学院，江苏 南京 210003
Author(s):
KONG Xiang－bin; SHEN Su－bin; LI Li
School of Computer Science ＆ Technology，School of Software，Nanjing University of Posts and Telecommunications，Nanjing 210003，China
关键词:
软件定义网络; 带宽; QoS 路由; OpenFlow
Keywords:
software－defined networking; bandwidth; QoS routing; OpenFlow
分类号:
TP393
DOI:
10．3969/j．issn．1673－629X．2018．02．023
文献标志码:
A
摘要:
为了解决 IP 网络对业务流进行 QoS 路由选择时存在链路状态信息收集困难及算法复杂度较高等问题，利用 SDN 网络控制器对网络集中控制的优势，通过 OpenFlow 协议获取基础设施层的链路状态信息及 SDN 控制器提供集中式的 QoS 路由服务，为业务流选择具有 QoS 约束的路由。涉及到的 QoS 度量参数为带宽，QoS 路由选择方案基于 SDN 网络设计链路上已用带宽的收集方法，为 QoS 路由算法提供准确的链路状态信息，并将业务流提出的带宽约束要求转换成链路代价。QoS 路由方案根据链路代价使用基于 Dijkstra 算法的 QoS 路由算法为业务流选择满足带宽约束的 QoS 路由。在基于 Floodlight 控制器以及 Mininet 网络仿真工具搭建的实验平台上进行了验证，结果证明了该 QoS 路由方案的可行性。
Abstract:
 In order to solve the problem that the link state information is difficult to collect and the complexity of the algorithm is high when the IP network selects a QoS routing for the service flow，we take advantage of the centralized control of the network by using SDN controller and obtain the link state information of the infrastructure layer through the OpenFlow protocol，and provide the centralized QoS routing service to select the route with QoS constraints for the service flow．The QoS metric parameters are bandwidth．QoS routing scheme design the method of collecting bandwidth on the link to provide accurate link state information for QoS routing algorithm．Then，the bandwidth constraint requirements proposed by the service flow are converted into link cost．The QoS routing scheme uses the QoS routing algorithm based on the Dijkstra algorithm to select the QoS route satisfying the bandwidth constraint according to the link cost．The feasibility of QoS routing scheme is verified by the experimental platform based on the Floodlight controller and Mininet network simulation tool．

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更新日期/Last Update: 2018-03-29