智能光网络数据流动态管理及生存性研究
摘要
智能光网络(Intelligent Optical Network,ION)作为构建新一代光网络的核心技术,以兼容性、扩展性良好的硬件系统为支撑,配备先进的软件系统,把光传输媒介层由静态变成了一种动态的、智能的光交换网络结构,并可以直接通过光域快速提供各种灵活的高速增值业务,形成一个以数据为中心的基础平台,全面提升通信网络的传送效能。智能光网络是以光传输为基础的光层组网技术和以IP为基础的网络智能化技术迅速发展并结合后形成的,其本质就是光传送网与智能化相结合,其着眼点是要把富有潜力的光网络发展成能高度自动的、应对业务需要的、经济有效的、可在光层上直接为全网提供端到端服务的智能网。因而,如何在智能光网络中提供更好的QoS(Quality of Service)保证和有效的网络生存性,成为急需解决的重要问题。
本文首先介绍了智能光网络的QoS机制以及国内外的发展现状,从各种光交换技术及其QoS机制入手,分析了IP over WDM网络、WDM(Wavelength Division Multiplexing)网络的QoS机制。之后,在对GMPLS(General Multi-protocol Label Switching)对等模型的流量工程、智能光网络层叠模型和对等模型的特点进行分析的基础上,对基于GMPLS对等模型的智能光网络的QoS机制进行了分析与仿真。结合WDM网络的光区分服务(Differentiated Optical Services,DOS)模型,提出了一种智能光网络的QoS模型。通过仿真,验证了此模型能够有效地减小业务时延,提高链路利用率,给网络带来优越性。
其次,本文研究了智能光网络的生存性技术问题。从不同网络的生存性入手,分析了网络生存性的意义,重点介绍了智能光网络的各种保护机制、恢复机制,探讨了多层生存性问题,对单层及多层网络中的生存性技术以及关键问题进行了研究总结。通过对多层网络生存性的多层独立恢复策略和协调恢复策略的研究,以及底层恢复、高层恢复和多层恢复三个子问题的深入探讨,提出了一种多层生存性策略——RLM(Restoration LayerManagement)策略。随后,对恢复层管理算法进行了仿真研究,验证了该策略的有效性。
As the core technology of next generation of optical network, ION (Intelligent Optical Network) is supported by a good hardware system, which has good compatibility and scalability, and is equipped with an advanced software system. It changed the static optical transmission layer into a dynamic, intelligent structure of optical switching network, and can directly use the optical domain to rapidly deliver flexible high-speed value-added services. It also forms a data-centric platform to enhance the efficiency of the transmission network. ION is fast developed after combining the optical network technology, which is based on the optical transmission, and IP-based intelligent network technology. The essential of ION is a combination of optical transport network and the intelligence. The aim of ION is to develop the potential optical networks into highly automatic, easily settled, economically effective network, and can directly provide end-to-end services for the entire optical networks. So, how to supply a better QoS and more effective survivability has been become one important topic that needs to be solved without hesitation.
The recent researches and development both in China and abroad of the QoS mechanisms have been introduced in this thesis. The QoS mechanisms of different networks are analyzed, such as IP over WDM network, WDM network. Then the QoS mechanism of ION based on GMPLS (General Multiprotocol Label Switching) peer model is studied and simulated after analyzing the traffic engineering of GMPLS peer model and the characteristics of the overlay model and the peer model of ION. Combining with the DOS (Differentiated Optical Services) model of WDM network, a new QoS mechanism of ION is proposed. The better performance of lower time delay and higher utilization of this mechanism is verified by simulation.
Secondly, the survivability of ION is studied. The survivability of different networks is analyzed. The protection mechanism, restoration mechanism, and multilayer survivability of ION are emphasized. The key issues and survivability technology of single layer and multilayer networks are developed and summarized. A new multilayer survivability strategy—RLM (Restoration Layer Management) for GMPLS is proposed after studying the multilayer independent and interworking restoration strategy of multilayer survivability, the bottom layer restoration, IP layer restoration, and multilayer restoration. The advantages of smaller blocking probability and good resource utilization are demonstrated by simulation.
本文首先介绍了智能光网络的QoS机制以及国内外的发展现状,从各种光交换技术及其QoS机制入手,分析了IP over WDM网络、WDM(Wavelength Division Multiplexing)网络的QoS机制。之后,在对GMPLS(General Multi-protocol Label Switching)对等模型的流量工程、智能光网络层叠模型和对等模型的特点进行分析的基础上,对基于GMPLS对等模型的智能光网络的QoS机制进行了分析与仿真。结合WDM网络的光区分服务(Differentiated Optical Services,DOS)模型,提出了一种智能光网络的QoS模型。通过仿真,验证了此模型能够有效地减小业务时延,提高链路利用率,给网络带来优越性。
其次,本文研究了智能光网络的生存性技术问题。从不同网络的生存性入手,分析了网络生存性的意义,重点介绍了智能光网络的各种保护机制、恢复机制,探讨了多层生存性问题,对单层及多层网络中的生存性技术以及关键问题进行了研究总结。通过对多层网络生存性的多层独立恢复策略和协调恢复策略的研究,以及底层恢复、高层恢复和多层恢复三个子问题的深入探讨,提出了一种多层生存性策略——RLM(Restoration LayerManagement)策略。随后,对恢复层管理算法进行了仿真研究,验证了该策略的有效性。
As the core technology of next generation of optical network, ION (Intelligent Optical Network) is supported by a good hardware system, which has good compatibility and scalability, and is equipped with an advanced software system. It changed the static optical transmission layer into a dynamic, intelligent structure of optical switching network, and can directly use the optical domain to rapidly deliver flexible high-speed value-added services. It also forms a data-centric platform to enhance the efficiency of the transmission network. ION is fast developed after combining the optical network technology, which is based on the optical transmission, and IP-based intelligent network technology. The essential of ION is a combination of optical transport network and the intelligence. The aim of ION is to develop the potential optical networks into highly automatic, easily settled, economically effective network, and can directly provide end-to-end services for the entire optical networks. So, how to supply a better QoS and more effective survivability has been become one important topic that needs to be solved without hesitation.
The recent researches and development both in China and abroad of the QoS mechanisms have been introduced in this thesis. The QoS mechanisms of different networks are analyzed, such as IP over WDM network, WDM network. Then the QoS mechanism of ION based on GMPLS (General Multiprotocol Label Switching) peer model is studied and simulated after analyzing the traffic engineering of GMPLS peer model and the characteristics of the overlay model and the peer model of ION. Combining with the DOS (Differentiated Optical Services) model of WDM network, a new QoS mechanism of ION is proposed. The better performance of lower time delay and higher utilization of this mechanism is verified by simulation.
Secondly, the survivability of ION is studied. The survivability of different networks is analyzed. The protection mechanism, restoration mechanism, and multilayer survivability of ION are emphasized. The key issues and survivability technology of single layer and multilayer networks are developed and summarized. A new multilayer survivability strategy—RLM (Restoration Layer Management) for GMPLS is proposed after studying the multilayer independent and interworking restoration strategy of multilayer survivability, the bottom layer restoration, IP layer restoration, and multilayer restoration. The advantages of smaller blocking probability and good resource utilization are demonstrated by simulation.
引文
[1]唐雄燕,左鹏.智能光网络--技术与应用实践[M].电子工业出版社.2004:
[2]Peter Tomsu,Christian Schmutzer.下一代光网络--IP层的智能与光层技术的融合[M].人民邮电出版社.1995.
[3]H.Zhang,A.Durresi,Differentiated Multi-layer Survivability in IP/WDM Networks[J].Network Operations and Management Symposium,IEEE/IFIP.2002:681-694.
[4][美]Robert Elsenpeter,Toby J.Velte.光网络实用指南[M].清华大学出版社.2003.
[5]宋鸿升,吴耀辉,顾碗仪.多层网络中的生存性策略[J].光通信技术,2004,VOL4:33-36.
[8]谢新梅,宋荣方.以IP为中心基于GMPLS的智能光网络QOS分析[J].现代有线传输.2003年,9月.
[9]Jae-Dong Lee,Sung-Un Kim.Differerntiated Wavelength Assignment with QoS Recovery for DWDM Next Generation Internet Backbone Networks[J].Photonic Network Communications.2003.5:163-175.
[10]付俊峰.朱来光网络的发展--智能光网络探讨[J].江西电力.第2期.2006年.
[11]Yang,H.Mounir,and D.H.K.Tsang,Proportional QoS over WDM networks:Blocking probility[J].IEEE Symposium on Computers and Communications,pp-210-216,2001.
[12]Maria C.Yuang et al.QoS Scheduler/Shaper for Optical Coarse Packet Switching IP-Over-WDM Networks[J].Selected Areas in Communications.IEEE Journal.2004(9):1766-1780.
[13]Nada Golmie et al.A Differentiated Optical Services Model for WDM Networks[J].IEEE COMMUNICATIONS MAGAZINE.2000(2):68-73.
[14]高乾,徐得慧.浅析智能光网络GMPLS/ASON的发展[J].电信网技术.2007年1月.
[15]Miroslaw Klinkowski,Marian Marciniak.QoS Guarantees in IP Optical Networks Using MPLS/MPLambdaS[J].Transparent Optical Networks.18-21 June 2001 Page(s):321-324.
[16]谢新梅,宋荣方.基于ASON重叠网络模型的智能光网络信令技术[J].光子技术. 2004年,3月.
[17]F.Callegati,G.Corazza,and C.Raffaelli.Explotation of DWDM for optical packet switching with quality of service guarantees.IEEE Journal on Selected Areas in Communication,2002,vol.20:190-201.
[18]孙屹.OPNET通信仿真开发手册[M].国防工业出版社.2005.
[19]Yang Qin,Lorne Mason.Study on a joint multiplelayer restoration scheme for IP over WDM network[J],IEEE Network Magazine,2003,17(2):43-48.
[20]C.Assi et al.Design a survivable IP over WDM networks[J].OptiComm 2001,Denver Co.,USA,21-22,August,2001.
[21]ITU-T G.841.Types and characteristics of SDH network architectures[S].10/1998 18.RFC2328 OSPF Version 2,04/1998.
[22]Guangzhi Li et al.Efficient Distributed Path Selection for Shared Restoration Connections[J].IEEE INFOCOM.2002:140-149.
[23]Ramamurthy S,Mukherjee B.Survivable WDM mesh networks,part Ⅰ-protection[J].Proceedings of IEEE Infocom '99.New York:IEEE Press,2003:744-751.
[24]Canhui(Sam)Ou,Jing Zhang et al.New and Improved Approached for Shared-Path Protection in WDM Mesh Networks[J].Journal Of Lightwave Technology.VOL.22,NO.5,MAY 2004.
[25]崔延军,李键.智能光网络多层生存性技术[J].量子电子学报,2007,24(2):290-26.
[26]霍晓莉.自动交换光网络的生存性及保护恢复[J].电信科学,2003,8:42-45.
[27]Wayne Grover et al.New Options and Insights for Survivable Transport Networks[J].IEEE Communication Magazine Jan.2002:34-41.
[28]Jae-Dong Lee,Sung-Un Kim.Differemtiated Wavelength Assignment with QoS Recovery for DWDM Next Generation Internet Backbone Networks[J].Photonic Network Communications,5:2,163-175,2003.
[29]Krishanthmohan Ratnam,Luying Zhou.Efficient Multi-layer Operational Strategies for Survivable IP-over-WDM Networks[J].Selected Areas in Communications.IEEE Journal,2006,VOL.24,NO.8:16-31.
[30]D.Papadimitriou et al.Analysis of Generalized Multi-Protocol Label Switching (GMPLS)-based Recovery Mechanisms[S].Internet Draft,draft-ietf-ccamp-gmpls-recovery-analysis-04.txt,work in progress,Oct.2004.
[31]Q.Zheng,G.Mohan.Protection Approaches for Dynamic Traffic in IP/MPLS-Over-WDM Networks.IEEE Communications Magazine,vol.41,no.5,May 2003,pp.s24-29.
[32]S.Ramamurthy,L.Sahasrabuddhe,and B.Mukherjee.Survivable WDM Mesh Networks[J].IEEE Journal of Lightwave Technology,Vol.21,no.4,April 2003,pp 870-882.
[33]Jian Wang et al.Path vs.Subpath vs.Link Restoration for Fault Management in IP-over-WDM Networks:Performance Comparisons Using GMPLS Control Signaling[J].IEEE Communication Magazine.November 2002:80-87.
[34]Eve L.Varmae et al.Architecting the Services Optical Network[J].IEEE Communication Magazine.September 2001:80-87.
[35]赵继军,纪越峰.智能光网络的多层生存性技术[J].中兴通信技术,2003,5:1-4.
[36]H.Zhang,A.Durresi.Differentiated Multi-layer Survivability in IP/WDM Networks[J].IEEE 2002:681-694.
[37]Ayan Banerjee et al.Generalized Multiprotocol Label Switching:An Overview of Signaling Enhancements and Recovery Techniques[J].IEEE Communication Magazine July 2001:144-151.
[38]SuKyoung Lee et al.Hierarchical Restoration Scheme for Multiple Failures in GMPLS Networks[C].Proceedings of the International Conference on Parallel Processing Workshops,2002.
[39]张宁,纪越峰.智能光网络技术及其发展[J].北京联合大学学报(自然科学版),2006,20(2):5-9.
[40]Lei Lei et al.A Joint Resilience Scheme with Interlayer Backup Resource Sharing in IP over WDM Networks[J].IEEE Communication Magazine Jan.2004:78-84.
[41]何荣希,张治中,王光兴等.IP/MPLS over WDM网中的动态选路和波长分配算法[J].电子与信息学报,2003,25(8):1081-1087.
[42]徐世中,李乐民,王晟.多光纤波分复用网动态路由和波长分配[J].电子学报,2000,28(7):23-27.
[2]Peter Tomsu,Christian Schmutzer.下一代光网络--IP层的智能与光层技术的融合[M].人民邮电出版社.1995.
[3]H.Zhang,A.Durresi,Differentiated Multi-layer Survivability in IP/WDM Networks[J].Network Operations and Management Symposium,IEEE/IFIP.2002:681-694.
[4][美]Robert Elsenpeter,Toby J.Velte.光网络实用指南[M].清华大学出版社.2003.
[5]宋鸿升,吴耀辉,顾碗仪.多层网络中的生存性策略[J].光通信技术,2004,VOL4:33-36.
[8]谢新梅,宋荣方.以IP为中心基于GMPLS的智能光网络QOS分析[J].现代有线传输.2003年,9月.
[9]Jae-Dong Lee,Sung-Un Kim.Differerntiated Wavelength Assignment with QoS Recovery for DWDM Next Generation Internet Backbone Networks[J].Photonic Network Communications.2003.5:163-175.
[10]付俊峰.朱来光网络的发展--智能光网络探讨[J].江西电力.第2期.2006年.
[11]Yang,H.Mounir,and D.H.K.Tsang,Proportional QoS over WDM networks:Blocking probility[J].IEEE Symposium on Computers and Communications,pp-210-216,2001.
[12]Maria C.Yuang et al.QoS Scheduler/Shaper for Optical Coarse Packet Switching IP-Over-WDM Networks[J].Selected Areas in Communications.IEEE Journal.2004(9):1766-1780.
[13]Nada Golmie et al.A Differentiated Optical Services Model for WDM Networks[J].IEEE COMMUNICATIONS MAGAZINE.2000(2):68-73.
[14]高乾,徐得慧.浅析智能光网络GMPLS/ASON的发展[J].电信网技术.2007年1月.
[15]Miroslaw Klinkowski,Marian Marciniak.QoS Guarantees in IP Optical Networks Using MPLS/MPLambdaS[J].Transparent Optical Networks.18-21 June 2001 Page(s):321-324.
[16]谢新梅,宋荣方.基于ASON重叠网络模型的智能光网络信令技术[J].光子技术. 2004年,3月.
[17]F.Callegati,G.Corazza,and C.Raffaelli.Explotation of DWDM for optical packet switching with quality of service guarantees.IEEE Journal on Selected Areas in Communication,2002,vol.20:190-201.
[18]孙屹.OPNET通信仿真开发手册[M].国防工业出版社.2005.
[19]Yang Qin,Lorne Mason.Study on a joint multiplelayer restoration scheme for IP over WDM network[J],IEEE Network Magazine,2003,17(2):43-48.
[20]C.Assi et al.Design a survivable IP over WDM networks[J].OptiComm 2001,Denver Co.,USA,21-22,August,2001.
[21]ITU-T G.841.Types and characteristics of SDH network architectures[S].10/1998 18.RFC2328 OSPF Version 2,04/1998.
[22]Guangzhi Li et al.Efficient Distributed Path Selection for Shared Restoration Connections[J].IEEE INFOCOM.2002:140-149.
[23]Ramamurthy S,Mukherjee B.Survivable WDM mesh networks,part Ⅰ-protection[J].Proceedings of IEEE Infocom '99.New York:IEEE Press,2003:744-751.
[24]Canhui(Sam)Ou,Jing Zhang et al.New and Improved Approached for Shared-Path Protection in WDM Mesh Networks[J].Journal Of Lightwave Technology.VOL.22,NO.5,MAY 2004.
[25]崔延军,李键.智能光网络多层生存性技术[J].量子电子学报,2007,24(2):290-26.
[26]霍晓莉.自动交换光网络的生存性及保护恢复[J].电信科学,2003,8:42-45.
[27]Wayne Grover et al.New Options and Insights for Survivable Transport Networks[J].IEEE Communication Magazine Jan.2002:34-41.
[28]Jae-Dong Lee,Sung-Un Kim.Differemtiated Wavelength Assignment with QoS Recovery for DWDM Next Generation Internet Backbone Networks[J].Photonic Network Communications,5:2,163-175,2003.
[29]Krishanthmohan Ratnam,Luying Zhou.Efficient Multi-layer Operational Strategies for Survivable IP-over-WDM Networks[J].Selected Areas in Communications.IEEE Journal,2006,VOL.24,NO.8:16-31.
[30]D.Papadimitriou et al.Analysis of Generalized Multi-Protocol Label Switching (GMPLS)-based Recovery Mechanisms[S].Internet Draft,draft-ietf-ccamp-gmpls-recovery-analysis-04.txt,work in progress,Oct.2004.
[31]Q.Zheng,G.Mohan.Protection Approaches for Dynamic Traffic in IP/MPLS-Over-WDM Networks.IEEE Communications Magazine,vol.41,no.5,May 2003,pp.s24-29.
[32]S.Ramamurthy,L.Sahasrabuddhe,and B.Mukherjee.Survivable WDM Mesh Networks[J].IEEE Journal of Lightwave Technology,Vol.21,no.4,April 2003,pp 870-882.
[33]Jian Wang et al.Path vs.Subpath vs.Link Restoration for Fault Management in IP-over-WDM Networks:Performance Comparisons Using GMPLS Control Signaling[J].IEEE Communication Magazine.November 2002:80-87.
[34]Eve L.Varmae et al.Architecting the Services Optical Network[J].IEEE Communication Magazine.September 2001:80-87.
[35]赵继军,纪越峰.智能光网络的多层生存性技术[J].中兴通信技术,2003,5:1-4.
[36]H.Zhang,A.Durresi.Differentiated Multi-layer Survivability in IP/WDM Networks[J].IEEE 2002:681-694.
[37]Ayan Banerjee et al.Generalized Multiprotocol Label Switching:An Overview of Signaling Enhancements and Recovery Techniques[J].IEEE Communication Magazine July 2001:144-151.
[38]SuKyoung Lee et al.Hierarchical Restoration Scheme for Multiple Failures in GMPLS Networks[C].Proceedings of the International Conference on Parallel Processing Workshops,2002.
[39]张宁,纪越峰.智能光网络技术及其发展[J].北京联合大学学报(自然科学版),2006,20(2):5-9.
[40]Lei Lei et al.A Joint Resilience Scheme with Interlayer Backup Resource Sharing in IP over WDM Networks[J].IEEE Communication Magazine Jan.2004:78-84.
[41]何荣希,张治中,王光兴等.IP/MPLS over WDM网中的动态选路和波长分配算法[J].电子与信息学报,2003,25(8):1081-1087.
[42]徐世中,李乐民,王晟.多光纤波分复用网动态路由和波长分配[J].电子学报,2000,28(7):23-27.