城域核心网发展趋势

城域核心网发展趋势-从以太网城域网到电信级以太网侯自强题要一、以太网演化和城域以太网论坛二、电信级以太网三、以太网传输四、产品、案例五、小结一、以太网演化和城域以太网论坛城域以太网快速发展•2004年城域以太网设备全球销售额为26亿美元，2005年翻一番达49亿美元。预期2009年可以达到150亿美元。•城域以太网快速发展的原因是简单、可以快速布设，带宽可扩展和粒度可变。内部开销低时延比采用3层的系统低低成本：城域以太网以传统技术两倍的代价，提供7－8倍带宽。广域以太网比传统技术低20－30％。此外路由器接口要便宜很多以太网业务预测区域市场地区2008CAGRProbeGroup欧洲$5billion40%Frost&Sullivan亚太$15.4billion31.5%YankeeGroup北美$4.0billion57.0%20042009CAGRInfonetics$2.5Billion$22.2billion54.7%以太网业务预测“以太网业务市场的14%是新开拓的而86%将来自传统业务的替代”VerticalSystemsGroup1973Meltcalfe&Boggs1980DEC,Intel,Xeroxbluebook1985IEEE802.3Ethernet10MbpsStandard2.94Mbps10Mbps19811995100MbpsIEEEFastEthernetStandardFirstProducts19971GigabitEthernetoverFiberStandard19991GigabitEthernetoverCopperStandard19941997100Mbps10Gbps1Gbps2001200110GigabitEthernetLAN200110GigabitEthernetWANManagement,Higherbandwidth,wireless采用其它技术发展以太网业务1970s1980s1990s2000s从LAN扩展到MAN以太网发展过程•城域以太网论坛MEF成立于2001年6月目的是加速发展运营商级以太网和业务•开始工作于城域以太网,为企业用户提供光城域网接入连接企业局域网。•进一步扩展到发展电信级以太网。•概念进一步推广到跨国家全球网络提供全世界业务•接入网可以基于光纤、铜线、EPON、无线和有线电视电缆•融合商业楼宇，居民区、无线接入共享同一基础设施，业务经过统一认证，获取规模经济效益。城域以太网网论坛MEF城域以太网业务定义•城域以太网论坛(MEF)定义两种以太网业务和三种业务类别业务类型ServiceType业务类别ServiceClass关键应用E-Line以太网专线业务EthernetPrivateLineService存储,数据镜像,业务连续性以太网虚拟专线业务EthernetVirtualPrivateLineService服务器加固大文件传送以太网DIAELAN以太网局域网业务EthernetLANServiceLAN-LAN,VOIP,远程学习,内容分发城域以太网的应用以太网做为业务•提供和出售连接•商业市场业务–EthernetVPNs•EthernetPrivateLine•EthernetVirtualPrivateLine•EthernetVirtualPrivateLAN以太网做为基础设施•支持居民区和商业Svcs–话音、视频、数据三重业务–互联网接入–存储•城域集中器–DSL集中器–无线干线–互联网接入和IPVPNsProviderMENVoiceASPDataVideoCECEPoint-to-PointEVCUNIUNIE-LineServicetype二、电信级以太网什么是电信级以太网?可扩展•业务和带宽•100,000个EVC’s•从Mbpst到x10Gbps保护•50ms保护•端到端路径保护•集中线路和结点保护服务质量•保证端到端的SLA•端到端的CIR和EIR•商业。移动，居民区TDM支持•无缝集成TDM•电路模拟业务•支持现有话音业务业务管理•快速提供服务•运营商级OAM能力•客户网络管理(CNM)CarrierEthernet电信级以太网:IEEE802.3以太网＋5项运营商级特性电信级以太网提供融合的业务VideoSource互联网话音网关CarrierEthernet话音/视频电话HDTVTVoD,VoDVideoSource游戏商业备份,ERPMobile3G居民区Triple-Play商业宽带E-Line,E-LAN,和TDM业务FTTx和DSLAM干线宽带移动数据/视频ATM的QoS和流量工程SONET/SDH的弹性和管理以太网的简单和经济性电信级以太网可以支持两种核心网IP/MPLSInternetIMSC/SP2PSIPINON应用：话音VoIP、视频IPTV应用：话音互联网电话、视频互联网电视、新媒体企业、大客户、VIP宽带消费者宽带业务应用居民区•TriplePlaywithIPTV•100’sofTVchannels•Videoondemand•Videorecording/playback•Interactivevideoapps•Multi-megabitInternetaccess•Remotelearning•Gaming商业•强化业务•Gigabitconnectivitybetweenbusinesses•DataCenterConsolidation•Storageanddisasterrecovery•Guaranteedratemulti-megabitInternetaccess•Videoconferencing&broadcast•Businesstelephony移动•无线干线•Wi-FiAccessdelivery•WiMAXinfrastructure•3Gandbeyondwireless•Nextgendataservices•Highresolutionphoto•Wirelessvideo•Gaming•DigitalTV企业业务Inter-LAN,Inter-PABXandSANCustomersiteCustomersiteCustomersiteCarrierEthernetCustomersiteCustomersiteCustomersiteIPVPNNetworkCarrierEthernetCustomersiteCustomersite加速全球采用电信级以太网和业务以太网业务的演化Vorizon1998-20042004-PresentServiceCharacteristicsBestEffortDataCoSCapabilitiesinclude:BestEffort,PriorityDataandRealTimeCommunicationsApplicationsBurstyhighbandwidthdataPrioritydata,VOIP,Conferencing,CallCenter,DistanceLearningSpeedsPrimarily10megabitatBranchOffices100megatHQandDataCenter100megUNIatBranchesGigabitatHQandDataCenterSLA’sOperational(Throughput,MTTR,Uptime)OperationalandPerformanceincludingmetricsfor(latency,jitter)ServiceClassELANonlyCompletePortfolioincluding:ELAN,EVPLandELINEservicesandemergingEthernetAccesstoIPFootprintMetroOnlyMetro,NationalandemergingglobalVerizon以太网业务GlobalNationalMetroCOVERAGE•GlobalDataLink(USand9EuropeanCountries)•EthernetPrivateLine•EthernetPrivateLineandDedicatedSONETRingsinover80marketsEthernetPrivateLine–Layer1•PrivateIP(metro,national,international)•InternetDedicated(metro,national,international)EthernetAccess•GlobalVPLScomingin2007•NationwideVPLScominginQ42006•VZE-LANIn-regionE-LAN•GlobalDataLink(USand9EuropeanCountries)•EthernetVirtualPrivateLine•EthernetVirtualPrivateLineinover80marketsEthernetVirtualPrivateLine–Layer2E-LineVerizon’sEthernetProductPortfolioServiceClassServiceType三、以太网传输多种传输技术EthernetConnectivityServicesIP-basedServicesVOIPInternetIP-VPNIPTVEthernetATMPDHE-LINEE-LANVLANMPLSWDMIP和Ethernet运行在任何基础设施上20%30%50%SONETL3EthernetWDMMPLSRPRTechnologyforEthernetServicesSource:HeavyReading50+%的以太网业务利用SONET~30%的以太网业务利用DWDMMPLS,RPR也被使用DSLPONRPRSONET/SDH传输MACinMACConnectivityServicesSeparation以太网传输功能和工具•集中•复用•保护•距离•故障部分化•端到端QoS•以太网•SONET/SDH•C/DWDM•弹性分组环RPR•xSTP•MPLS快速选路•PWE3•ProviderBridging•MAC包封E•Combinations实现工具包物理层包封附件保护附件功能ScalabilityReliabilityHardQoSTDMSupportServiceManagementCarrierEthernet•Add/Dropcircuits•Nosupportforpacketservices•DistributedDXC•MappingofPacketservicestocircuits•LimitedStatisticalmultiplexing•Optimizedforpacketmultiplexing•Mappingofcircuitsoverpackets•Traditionalsynchronization以太网传输技术演化SONETPHYTDMFabricADMSTS-1VT1.5SONETPHYTDMFabricMSPPSTS-1VT1.5PacketServicesSONETPHYNextGenerationFabricPacketTransportVT1