软件定义的内容中心网络的多域分段路由机制
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摘要
为提高软件定义的内容中心网络(SD-CCN)分域多控制器架构中的路由传输效率,减轻控制器的负载压力,设计了软件定义的内容中心网络的多域分段路由机制(MDSR)。将基于内容名称的路由查找在控制平面执行,数据平面转换为基于节点标签的路由查找,上行链路经过的每个域的控制器选取最优路径并下发分段标签序列引导各自的域内路由,通过跨域节点对域标签的识别实现域间路由中继,从而以少量控制信息实现对上行链路的整体控制。仿真结果表明,本路由机制相比于随机转发等传统路由机制提高了缓存命中率,降低了平均请求时延及平均路由跳数。
In order to improve the routing efficiency and reduce the controllers' load pressure in multi domain multi-controller architecture of software defined content centric network( SD-CCN),this paper designed a multi domain segment routing mecha-nism( MDSR) in software defined content centric network. The schema carried out the routing lookup based on content name in control plane,and transformed into node label based routing lookup in data plane. The controllers for each domain on the uplink selected the optimal path and sent out segment lists to guide intra-domain routing,achieved inter domain routing relay through the identification of domain tag by cross domain nodes,so as to achieve the overall control of the uplink with a small amount of control information. Simulation results show that this routing mechanism can effectively improve the cache hit ratio,reduce the average request delay and average routing hops,compared with traditional routing mechanisms such as random forwarding.
In order to improve the routing efficiency and reduce the controllers' load pressure in multi domain multi-controller architecture of software defined content centric network( SD-CCN),this paper designed a multi domain segment routing mecha-nism( MDSR) in software defined content centric network. The schema carried out the routing lookup based on content name in control plane,and transformed into node label based routing lookup in data plane. The controllers for each domain on the uplink selected the optimal path and sent out segment lists to guide intra-domain routing,achieved inter domain routing relay through the identification of domain tag by cross domain nodes,so as to achieve the overall control of the uplink with a small amount of control information. Simulation results show that this routing mechanism can effectively improve the cache hit ratio,reduce the average request delay and average routing hops,compared with traditional routing mechanisms such as random forwarding.
引文
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[14]Son J,Kim D H,Kang H S,et al.Forwarding strategy on SDNbased content centric network for efficient content delivery[C]//Proc of IEEE International Conference on Information Networking.Washington DC:IEEE Computer Society,2016:220-225.
[15]Aubry E,Silverston T,Chrisment I.SRSC:SDN-based routing scheme for CCN[C]//Proc of the 1st IEEE Conference on Network Softwarization.Piscataway,NJ:IEEE Press,2015.
[16]AI-Jawad A,Trestian R,Shah P,et al.Ba Prob SDN:a probabilisticbased Qo S routing mechanism for software defined networks[C]//Proc of the 1st IEEE Conference on Network Softwarization.Piscataway,NJ:IEEE Press,2015.
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[18]Li Dan,Shang Yunfei,Chen Congjie.Software defined green data center network with exclusive routing[C]//Proc of IEEE International Conference on Computer Communications.Piscataway,NJ:IEEE Press,2014:1743-1751.
[19]Mastorakis S,Afanasyev A,Moiseenko I,et al.Ndn SIM 2.0:a new version of the NDN simulator for NS-3,NDN-0028[R/OL].(2015-01-27).http://named-data.net/wp-centent/uploads/2013/07/ndn-0028-1-ndnsim-v2.pdf.
[2]Kim H,Feamster N.Improving network management with software defined networking[J].IEEE Communications Magazine,2013,51(2):114-119.
[3]Syrivelis D,Parisis G,Trossen D,et al.Pursuing a software defined information-centric network[C]//Proc of European Workshop on Software Defined Networking.Washington DC:IEEE Computer Society,2012:103-108.
[4]Veltri L,Morabito G,Salsano S,et al.Supporting information-centric functionality in software defined networks[C]//Proc of IEEE International Conference on Communications.Piscataway,NJ:IEEE Press,2012:6645-6650.
[5]Chanda A,Westphal C.A content management layer for software-defined information centric networks[C]//Proc of the 3rd ACM SIGCOMM Workshop on Information-Centric Networking.New York:ACM Press,2013:47-48.
[6]黄锦松.软件定义的内容中心网络关键技术研究[D].南京:南京邮电大学,2015.
[7]Filsfils C,Nainar N K,Pignataro C,et al.The segment routing architecture[C]//Proc of IEEE Global Communications Conference.Piscataway,NJ:IEEE Press,2014:1-6.
[8]Sgambelluri A,Giorgetti A,Paolucci F,et al.Experimental demonstration of multi-domain segment routing[C]//Proc of European Conference on Optical Communication.Piscataway,NJ:IEEE Press,2015:1-3.
[9]Shanbhag S,Schwan N,Rimac I,et al.So CCe R:services over content-centric routing[C]//Proc of ACM SIGCOMM Workshop on Information-Centric Networking.New York:ACM Press,2011:62-67.
[10]张国印,唐滨,孙建国,等.面向内容中心网络基于分布均匀度的蚁群路由策略[J].通信学报,2015,36(6):1-12.
[11]葛国栋,郭云飞,刘彩霞,等.内容中心网络中基于差异化缓存通告的混合路由机制[J].电子与信息学报,2015,37(3):700-707.
[12]蔡岳平,刘军.内容中心网络状态感知路由设计[J].通信学报,2016,37(6):38-48.
[13]Torres J,Ferraz L,Duarte O.Controller-based routing scheme for named data network[EB/OL].(2013-02-18).http://www.gta.ufrj.br/ftp/gta/Tech Reports/TFD.pdf.
[14]Son J,Kim D H,Kang H S,et al.Forwarding strategy on SDNbased content centric network for efficient content delivery[C]//Proc of IEEE International Conference on Information Networking.Washington DC:IEEE Computer Society,2016:220-225.
[15]Aubry E,Silverston T,Chrisment I.SRSC:SDN-based routing scheme for CCN[C]//Proc of the 1st IEEE Conference on Network Softwarization.Piscataway,NJ:IEEE Press,2015.
[16]AI-Jawad A,Trestian R,Shah P,et al.Ba Prob SDN:a probabilisticbased Qo S routing mechanism for software defined networks[C]//Proc of the 1st IEEE Conference on Network Softwarization.Piscataway,NJ:IEEE Press,2015.
[17]Porxas A X,Lin S C,Luo Min.Qo S-aware virtualization-enabled routing in software-defined networks[C]//Proc of IEEE International Conference on Communications.Piscataway,NJ:IEEE Press,2015:5771-5776.
[18]Li Dan,Shang Yunfei,Chen Congjie.Software defined green data center network with exclusive routing[C]//Proc of IEEE International Conference on Computer Communications.Piscataway,NJ:IEEE Press,2014:1743-1751.
[19]Mastorakis S,Afanasyev A,Moiseenko I,et al.Ndn SIM 2.0:a new version of the NDN simulator for NS-3,NDN-0028[R/OL].(2015-01-27).http://named-data.net/wp-centent/uploads/2013/07/ndn-0028-1-ndnsim-v2.pdf.