基于SDN的虚拟光网络优化路由算法
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摘要
针对传统光网络传输数据过程中带宽利用率低和网络出现拥塞等不足,基于软件定义网络构建出分组网络与光网络互联的虚拟光网络拓扑结构,并提出一种多路径优化路由分配算法,在链路固定带宽的限制下,仿真计算出各个链路的最大负载以及优化路由分配比例,并借助于ONOS和Mininet仿真工具进行了仿真分析。仿真结果表明,与平均分配算法相比,所提算法可以有效降低数据的传输时延,避免网络拥塞。
Considering the shortage of low bandwidth utilization and congestion of data transmission in traditional optical networks,we construct a Software Defined Network(SDN)-based virtual optical network that comprises of a packet network and an optical network,and propose a multi-path routing algorithm that optimizes the bandwidth allocation.Under the capacity constraints of the transmission link,we calculate the maximum load of each link and optimize the bandwidth allocation in multipath routing.With the help of ONOS and Mininet simulation tools,we verify that our algorithm can effectively reduce the delay of data transmission and avoid network congestion.
Considering the shortage of low bandwidth utilization and congestion of data transmission in traditional optical networks,we construct a Software Defined Network(SDN)-based virtual optical network that comprises of a packet network and an optical network,and propose a multi-path routing algorithm that optimizes the bandwidth allocation.Under the capacity constraints of the transmission link,we calculate the maximum load of each link and optimize the bandwidth allocation in multipath routing.With the help of ONOS and Mininet simulation tools,we verify that our algorithm can effectively reduce the delay of data transmission and avoid network congestion.
引文
[1]郝爽.基于SDN的光网络虚拟化技术研究[D].北京:北京邮电大学,2015.
[2]Kachris C,Tomkos I.A Survey on Optical Interconnects for Data Centers[J].IEEE Communications Surveys&Tutorials,2012,14(4):1021-1036.
[3]张杰.软件定义光网络研究进展与创新应用探讨[J].中兴通讯技术,2015,21(6):39-44.
[4]张朝昆,崔勇,唐翯祎,等.软件定义网络(SDN)研究进展[J].软件学报,2015,26(1):62-81.
[5]Gou B,Simeonidou D,Channegowda M,et al.Toward a Completely Softwareized Optical Network[Invited][J].IEEE/OSA Journal of Optical Communications&Networking,2015,7(12):B222-B231.
[6]Feamster N,Rexford J,Zegura E.The Road to SDN:An Intellectual History of Programmable Networks[J].Acm Sigcomm Computer Communication Review,2014,44(2):87-98.
[7]Zou J,Yan F,Lee T T,et al.A Perturbation Algorithm for Embedding Virtual Data Centers in Multipath Networks[C]//Global Communications Conference.Austin,USA:IEEE,2014:2240-2245.
[8]Karakus M,Durresi A.A survey:Control Plane Scalability Issues and Approaches in Software-Defined Networking(SDN)[J].Computer Networks,2017,112(1):279-293.
[2]Kachris C,Tomkos I.A Survey on Optical Interconnects for Data Centers[J].IEEE Communications Surveys&Tutorials,2012,14(4):1021-1036.
[3]张杰.软件定义光网络研究进展与创新应用探讨[J].中兴通讯技术,2015,21(6):39-44.
[4]张朝昆,崔勇,唐翯祎,等.软件定义网络(SDN)研究进展[J].软件学报,2015,26(1):62-81.
[5]Gou B,Simeonidou D,Channegowda M,et al.Toward a Completely Softwareized Optical Network[Invited][J].IEEE/OSA Journal of Optical Communications&Networking,2015,7(12):B222-B231.
[6]Feamster N,Rexford J,Zegura E.The Road to SDN:An Intellectual History of Programmable Networks[J].Acm Sigcomm Computer Communication Review,2014,44(2):87-98.
[7]Zou J,Yan F,Lee T T,et al.A Perturbation Algorithm for Embedding Virtual Data Centers in Multipath Networks[C]//Global Communications Conference.Austin,USA:IEEE,2014:2240-2245.
[8]Karakus M,Durresi A.A survey:Control Plane Scalability Issues and Approaches in Software-Defined Networking(SDN)[J].Computer Networks,2017,112(1):279-293.