城域以太网技术研讨会专题

1、北电城域以太网技术研讨会中国 北京2008年5月1研讨会日程时间议题演讲人上午8:009:00签到9:009:10P1: 开幕致辞曾勉之市场部总经理大中华区有线和企业网部9:1010:10P2: 北电城域以太网：观点与策略Anup Changaroth亚太区市场总监北电城域以太网部10:1010:45P3.1: 案例分析（BT 21CN城域网）David Allan运营商以太网首席架构师北电CTO办公室10:4511:00茶歇11:0011:30P3.2: 案例分析（中国用户案例总结）杜鹏资深系统工程师北电城域以太网部11:3012:15P4: 现场技术演示中午12:3014:00午餐下午14

2、:0015:00P5.1: PBT与以太网技术革命David Allan运营商以太网首席架构师北电CTO办公室15:0015:15茶歇15:1516:15P5.2: PBT与以太网技术革命David Allan运营商以太网首席架构师北电CTO办公室16:1516:30P6: 闭幕致辞黄陈宏运营商事业部总经理北电（中国）公司晚上17:30晚餐2第一部分：开幕致辞曾勉之市场部总经理大中华区有线和企业网部3PART 2Nortel MEN vision and strategy第二部分：北电城域以太网：观点与策略Anup Changaroth亚太区市场总监北电城域以太网部4Agenda / 日程Ma

3、rket Trends & Nortel Strategy市场趋势与北电战略Metro Ethernet Key Technological Advance北电城域以太网关键技术优势Summary总结560% of internet trafficis videoTrends driving Next-Generation Innovation业务演进驱动下一代技术创新Video is the next voice to disrupt networks视频取代话音，成为承载网的上帝Separation of infrastructure and applications among Serv

4、ice Providers 运营商基础网络与业务网络的分离Intersection of IT, Telecom & Entertainment 电信运营、企业信息化、传媒娱乐你中有我，我中有你Ethernet is fast becoming the defacto universal transport layer传输层技术，以太网为王Carrier Ethernet Switching Optical NetworksMetro Ethernet Network67As much as 95% of all traffic todayoriginates & terminateson a

5、n Ethernet LAN or device95的网络流量起始并终止于以太网或相应设备Underlying Reality about Networks网络存在的现实78Key Metro Application Drivers关键城域业务驱动US HQTokyo$1B Total market over next 3 years, at 50% CAGR Global Reach More B/W intensive apps Maximize IT $ ValueATM DSLAMsIP/Ethernet DSLAMsIP/Ethernet DSLAM growthIP/以太网DSLA

6、M的增长Ethernet Business services以太网商业业务Emerging Ethernet market growing 70% CAGR over next 3 yrsIP backhaul for Broadband wireless EVDO, HSDPA WiMAXLower cost & higher B/W than PMO - nxT1 backhaul Wireless backhaul/无线回程200 million subscribers by 2009, 75% CAGR Any Service, Any time, Anywhere, 20+ Mbps

7、Flexibility to AdaptMassive Bandwidth demandMSO led, LEC/PTT, Content providers emergingConsumer Video & Triple-Play视频业务与三重播放PON89Some of the current challenges with Ethernet as a transport protocol以太网作为传送协议当前所面临的挑战No support for sub-50ms resilience Limited by (R) Spanning Tree Protocol in the Acces

8、s/Aggregation layersMission-critical services are unable to migrate to EthernetLack of Carrier-grade Resilience缺少运营级可靠性(R)Spanning Tree Protocol lacks deterministic capability Poor network performance predictabilityQoS depends on significant over-provisioning or complex static + dynamic provisioning

9、Lack of Determinism & QoS缺少确定性和QOSEnterprise-grade Access Network broadcast / flooding & VLANs significantly limit scalabilityTechnology mixes such as SONET/SDH or MPLS used to try and solve the scalability & other problem Network operational complexity & costLack of Carrier-grade scalability缺少运营级可扩

10、展性Ethernet as well as other packet transport technologies like MPLS still lags behind in carrier-class OAM as compared to traditional OAM of SONET/SDH networks Complex and costly operationsLack of Carrier-grade OA&M缺少运营级OA&M9Nortels Metro Ethernet Strategy北电城域以太网策略Underlying Intelligent Photonic lay

11、er智能光网层面Ubiquitous Access & Aggregation layer separate from the photonic layerAutomation of network operations (power monitoring, end-to-end provisioning, etc.)Open architecture (support for foreign wavelengths)eROADM增强型可重配置OADMAny-port-to-any-port granularity5 degree branchingeDCO电子色散补偿Eliminate DC

12、Ms and extended reachG.709 compliantTunable Lasers/Filters可调激光器Wide range of tunabilityG.MPLS - OTI40 Gbps Ready Determinism& QOS确定性与QoSCarrier-class Operations运营级管理Scalability & Agility扩展性与灵活性MultiserviceConvergence多业务融合Metro Ethernet layer: Service agnostic transport城域以太网层面：业务统一传送Service Provider

13、Application, Services & OSS Layer运营商应用、业务与OSS层面1011 NORTEL PROPRIETARYNortels Metro Ethernet Networks/北电城域以太网 Reference Architecture/参考结构11Nortels Metro Ethernet Strategy北电城域以太网策略Underlying Intelligent Photonic layer智能光网层面Ubiquitous Access & Aggregation layer separate from the photonic layerAutomati

14、on of network operations (power monitoring, end-to-end provisioning, etc.)Open architecture (support for foreign wavelengths)eROADM增强型可重配置OADMAny-port-to-any-port granularity5 degree branchingeDCO电子色散补偿Eliminate DCMs and extended reachG.709 compliantTunable Lasers/Filters可调激光器Wide range of tunabilit

15、yG.MPLS - OTI40 Gbps Ready Determinism& QOS确定性与QoSCarrier-class Operations运营级管理Scalability & Agility扩展性与灵活性MultiserviceConvergence多业务融合Metro Ethernet layer: Service agnostic transport城域以太网层面：业务统一传送Service Provider Application, Services & OSS Layer运营商应用、业务与OSS层面1213MEF Carrier Ethernet “definition”城域

16、以太网论坛运营商以太网“定义”Services & Bandwidth100,000s of EVCsFrom Mbps to x10Gbps50ms ProtectionEnd-to-End Path ProtectionAggregated Line and Node protectionFast Service CreationCarrier class OAMCustomer Network management (CNM)Guaranteed end-to-end SLAEnd-to-end CIR & EIRBusiness, Residential, MobileSeamless

17、 integration of TDMCircuit Emulation ServicesSupport existing Voice applications1314Technology option/mix today今天的技术选择与挑战SDH/DWDM w/ GFP/VCAT/LCASSDH Bandwidth Control & Guarantees ScalabilityFlexible mapping of Ethernet onto SDHHybrid solutionLow cost entry pointBut:Little statistical gainWeak gran

18、ularityDifficulty mapping connections over Pure Play Ethernet & MPLSProvider Bridging(IEEE 802.1ad Q-in-Q)Potential for MAC explosionsScalability limited to 4094 VLANSWeak Customer segregationTraffic engineering limited to 4094No hard bandwidth guaranteesSTP challenges: Stranded b/wPoor convergence

19、Poor securityMPLS (VPWS/VPLS)Multiservice commonality with WANTransport agnosticQoS and TE availableBut:Scalability costsComplex protocolsHigher CapexLacking OAM maturity and developmentAll are valid approaches, but are insufficient on their own都是可行的方法，但是每项技术均存在自身的缺陷1415Ethernets current challenges以

20、太网当前面临的挑战Lack of Carrier-class Scalability / 缺少运营级扩展性Lack of Carrier-class Resilience / 缺少运营级可靠性Lack of basic Determinism & hard QoS / 缺少业务确定性和“硬”QOSLack of Carrier-Grade OAM / 缺少运营级OAMWithout changing the basic Ethernet model!无需改变基本的以太网模型！And maintaining Ethernets Cost advantage!同时保持以太网的成本优势！What i

21、f Scalability, Resilience, QoS, Traffic Engineering & OA&M were all achievable如果扩展性、可靠性、QOS、流量工程和OAM均可实现1516Evolution of the Transport Layer传送层技术演进ConnectionLess无连接ConnectionOriented面向连接Only IPMulti-protocolIP/EthernetX.25Frame-RelayIP+MPLSPlus LSPPlus TEPlus MP supportIP+MPLS + PWT-MPLSMinus IP Rou

22、tingATMIEEE 802.1ahProvider Backbone BridgesPlus Backbone tagsPlus I-SIDIEEE 802.1ayPBT/PBB-TEPlus TESONET/SDH1617Introducing IEEE 802.1ah IEEE802.1ah的引入Provider Backbone Bridging (PBB)/运营商骨干桥接(PBB)Puts the Provider in Full control of their Ethernet spaceGreater Scalability no longer tied to client

23、MAC addressesInventory-able Service ID for strong service managementSecurity robust client to network and client to client separation, but still pnpLow cost Ethernet solutionTunneling decoupled from serviceLeverages the other IEEE standards (e.g. IEEE 802.1ag)However Does not have Connection Managem

24、entRelies on Spanning TreeNo Hard Bandwidth GuaranteesIEEE 802.1ahProviderBackboneBridgePayloadCustomerEthernetHeaderProviderEthernetHeaderService IDEthertypeIEEE 802.1Ethernet FramePayloadCustomerEthernetHeaderEthertypeBackboneSource MACBackboneDest. MACEthertypeBackboneVLAN IDEthertypeScalable Eth

25、ernet Networking, with customer/provider demarcation扩展传统以太网，引入用户/运营商分离点概念1718Introducing IEEE 802.1Qay IEEE 802.1Qay的引入Provider Backbone Transport (PBT) aka PBB-TE运营商骨干传输（PBT）或PBB-TEBased on IEEE 802.1ah/ad (PBB/QiQ)基于IEEE802.1ah/ad（PBB/QiQ）Turning off MAC learningDiscarding unknown frames & broadca

26、st framesAdding Protection path switching to PBB bridgesDirected CCs to IEEE 802.1ag to achieve sub-50ms protection switchingSimple L2 networking technology简化的二层网络技术Tunnels can be engineered for diversity and/or resiliencyLeverage Emerging standards for基于以下相应的的技术标准OAM & Protection (802.1ag & ITU)Sec

27、urity & Service Management PBB (802.1ah)PWE Carriage (IETF Dry Martini)Management system or GMPLS for provisioningTraffic engineered Ethernet trunks/具备流量工程特性的以太网中继Based on existing Ethernet hardware and forwarding principles完全基于现有以太网硬件和转发机制Providing Deterministic Ethernet with SDH-like sub-50ms Resi

28、lience and QoS为以太网带来确定性转发，提供可以和SDH相媲美的50毫秒冗余保护倒换和QOS特性1819PBT: Native Ethernet Transport / 纯粹的以太网传输技术 Works with any Service Layer / 良好承载任何业务层面Customer PayloadPseudowireService LabelMPLS Tunnel LayerVPLS PBBAny Service!L1 HeaderEthernet HeaderPW over PBTVFVFPWsPWsVPLS over PBTVSIVPLSVPLSVSIPBB over

29、PBTI-SIDPBBPBBI-SIDPBT works with any Service Layer!PBT可以承载任何业务层！1920Introducing IEEE 802.1ag & ITU Y.1731 /IEEE802.1ag和ITU Y.1731的引入PBB/.1ah & PBT/.1ay OAM/ PBB/.1ah和 PBT/.1ay 的OAM基础Uses all the Ethernet OAM initiatives in the IEEE and ITUIEEE 802.1ag & ITU-T Y.1731Basic TransactionsCCM Continuity

30、CheckEthernet-LB Loop Back, plus Jitter and Delay measurements via Y.1731Ethernet-LT Link TraceEthernet-AIS Alarm inhibit signalEthernet-RDI Reverse Defect IndicationEthernet-LM Loss measurementDelivering Carrier-grade OAM, equivalent to todays SONET/SDH network OAM提供运营级OAM，与SDH网络的OAM相似2021OAM Compa

31、rison / OAM机制比较Technology OptionsFLRFDFDVPBB/.1ahPBT/.1ayIEEE 802.1agITU Y.1731VLAN/MPLSIETF LSP Ping IETF BFDY.1711Fault DetectionFaultVerificationFault LocalizationDiscoveryFaultNotificationPerformanceMonitoringOAMHierarchyService Management业务管理Fault Management故障管理 Complete Simplified complementar

32、yIncomplete Complex Competing21Nortels Metro Ethernet Strategy北电城域以太网策略Underlying Intelligent Photonic layer智能光网层面Ubiquitous Access & Aggregation layer separate from the photonic layerAutomation of network operations (power monitoring, end-to-end provisioning, etc.)Open architecture (support for for

33、eign wavelengths)eROADM增强型可重配置OADMAny-port-to-any-port granularity5 degree branchingeDCO电子色散补偿光器件Eliminate DCMs and extended reachG.709 compliantTunable Lasers/Filters可调激光器Wide range of tunabilityG.MPLS - OTI40 Gbps Ready Determinism& QOS确定性与QoSCarrier-class Operations运营级管理Scalability & Agility扩展性与灵

34、活性MultiserviceConvergence多业务融合Metro Ethernet layer: Service agnostic transport城域以太网层面：业务统一传送Service Provider Application, Services & OSS Layer运营商应用、业务与OSS层面2223Nortels Evolving Photonic Solution 北电持续演进的光网络解决方案Introducing the Common Photonic Layer / 通用光层的引入Dramatic photonic layer simplification throu

35、gh automation, continuous self-optimization and open DWDM networking通过自动的连续自优化机制的开放的DWDM网络，实现灵活的光层简化Long Haul2000 kmRegional600 kmMetro200 kmService Enabling Network Elements Multiservice Switches SONET/SDH ADMs Optical Switches DWDM TerminalsCommonPhotonicLayer通用光层2.5G, 10G, Nx10G & 40G lsAny Servi

36、ce from 16 Mbps to 10 Gbps2324Converged Photonic Solution融合光网络解决方案Comprehensive Access, Aggregation & Core portfolio to support Video On-Demand, Digital Broadcast, VoIP, High Speed Data and Business ServicesOM5200OM3500OME6500Vendor xMERS8600EdgeEdgePhotonic LayerWDM TerminalL2/L3 Switch orSONET/SDH

37、 CrossConnectWDM TerminalL2/L3 Switch orSONET/SDH CrossConnectOADM/ROADMSwitchingPhotonic Controller2425All Optical Agility applying eROADMs全光网的灵活性采用 eROADMsPhase 1: Serving highly populated areas and Enterprise customerseROADMs at junction sites for Phase 2 service expansion2526Dispersion Limit Cha

38、llenges 色散补偿的问题 Driving need for electronic Dynamically Compensating Optics (eDCO) 电子色散补偿光器件技术的驱动ROADMs alone fall short of a truly adaptive all optical networkThe need for dispersion compensation in the photonic line limits agility and service forecast toleranceEach wavelength travels a different d

39、istance over a variety of fiber types不同的波长通过不同类型的光纤传送不同的距离SMF-28SMF-28SMF-28LEAFE-LEAFLS-DSFTWcTeraLigth2627TxRxTxRx1 spanDCFDCFDCFDCFConventional Optical Link with DCMs基于传统DCM技术进行光波传送Nortels Next Generation Optical Link with CPL and eDCO北电下一代基于CPL和eDCO技术进行的光波传送DCF = Dispersion Compensating Fiber, p

40、ackaged as a DCMOptical Pulse Transmission with eDCO采用eDCO技术进行光波传送Pre-Distorted, Eye DiagramFocused Eye Diagram(Zero Net Dispersion)2728Applying eDCO Technology部署 eDCO 技术New business areaInitial network build outsLEAFLEAFLEAFTeralightTeralightSMF-28SMF-28SMF-28Network expansion to a new business are

41、a with a new type of fiberDifferent fiber typesDifferent span lengthseDCO eliminates the bulk optical dispersion compensators (DSCMs) and their associated loss compensation simpler network management, lower capital and operating costs2829Nortels 40Gbps with QPSK 基于正交相移键控技术的北电40G解决方案The Deployable 40

42、G Solution / 可以部署的40G方案Advanced modulation techniques QPSK on 2 orthogonal Polarization先进的QPSK调制技术40Gbps on a single wavelength (2 x 10 Gbps on each polarisation)Quadruple effective # of 10Gb/s channelsNortels DSP & custom ASIC designLeverage existing 10Gbps networks利用现有10G网络No-reengineering require

43、d!Maintain the same 10Gbps transmission parametersSimilar PMD/PDL specs as 10GNo PMD compensation required. 400% increase in throughput while leveraging the investment in the existing 10Gbps infrastructure保护当前10G架构的投资，吞吐能力增加达400Recent Customer endorsement, 2006最新用户反馈，2006“Nortels 40G solution is the

44、 BEST solution relative to all the other 40G implementations especially with poor fibre plants (PMD issues).”2930Summary: Key Pillars Nortels Metro Ethernet Strategy总结：北电城域以太网策略的关键基石Connectivity / Service Checks链路层/业务层检测 ITU Y.1731 Performance MetricsITU Y.1731性能管理 Complete Fault Management 完善的故障管理8

45、02.1ag & 802.3ah OAMCarrier-class OAM 运营级OAM802.1ah (PBB) / PWE3 EncapPBB/PWE3封装 Secure Customer Separation安全的用户分离Service/Tunnel Hierarchy 层次化的业务和隧道支持Reduced Network Stat精简的网络状态Massive Service Scalability巨大的业务扩展性 Next-GenEthernet Transport下一代以太网传送技术Advanced Ethernet Tunneling先进的以太网隧道技术 Deterministic

46、 Service Delivery确定性的业务传送QoS & Traffic EngineeringQOS和流量工程Resiliency & Restoration弹性与可快速恢复性AdaptivePhotonicSynergy自适应光层创新Forecast tolerance, unmatched scalability预报容错,无可匹敌的扩展性Bit rate, Protocol & vendor transparency (foreign wavelength support)比特率,协议和厂商透明性(支持外部波长)30Why Nortel?为什么选择北电？Successful trac

47、k record in Carrier-Ethernet (175,000 CE, 44,000 RPR ports)运营商以太网全球广泛部署(175,000 CE端口, 44,000 RPR端口)Global leadership in Optical Networking (No.1 in 1Q06)光网络领域全球领先(No.1 in 1Q06)Deep understanding of Service Provider needs对运营商需求的深刻理解Technology Innovator (RPR, PBB, PBT, GFP, VCAT)引领技术创新(RPR, PBB, PBT,

48、GFP, VCAT)CTO, Telecable Spain, March 2006“Nortel offers a comprehensive Metro Ethernet portfolio. It provides the flexibility to use the right technology in the right location (Ethernet over DWDM in the core, Ethernet over fiber at the edge)”31Recent Industry Endorsement业界认可，最新更新Shanghai Telecom to

49、 provide Nortel-powered high-bandwidth servicesShanghai Telecom will use new Metro Ethernet technology from Nortel.October 13, 2006 Parthajit“People should get to know PBT a little better especially if they like transport paradigms”March, 2006 OVUM/RHK Research Mark Seary“Nortel to enhance Ethernet

50、derivative”Nortels PBT enables Ethernet to behave like a traditional carrier transport technology.October, 2006 Jim Duffy, NetworkWorldNortel Wins role in BTs 21st Century NetworkBT has selected Nortel to play an important role in tis 21st Century Network programme.January 15, 2007 Press Release32Gl

51、obal track record全球用户案例TM33PART 3Nortel MEN Case Study第三部分：北电城域以太网用户案例分析BT 21CN城域网案例中国用户案例总结34PART 3Nortel MEN Case Study第三部分：北电城域以太网用户案例分析BT 21CN城域网案例David Allan运营商以太网首席架构师北电CTO办公室35BTs Customers are ChangingBT用户在变化之中Infrastructure management, 基础架构管理remote and roving access远程访问与漫游Global reach全球可达Mo

52、bility移动性Secure and robust安全性和强壮性Access to information信息访问Ensuring security & managing risk确保安全性 & 降低管理风险Source : BT/Internet36Revenue - Transformation of mix业务收入向混合转型Extract from Economist magazine published Oct 14th, data sourced from Westhall Capital% of revenue derived from voice Feb 2006传统话音收入占

53、总收入的百分比2006年2月The Economist产业数据Public Statements suggest / BT公布的信息35% of revenue is private line35 of revenue is data and broadband20 is legacy voice10% Misc37Next-generation transformation BTs 21CN向下一代网络转型BT 21CNInvest： 10bn over 5 years投资：5年投资100亿英镑Save: 1bn annually by 2008/9节省：到2008/9计划节省10亿英镑El

54、iminate: 100,000 network components精简：10万网络设备Simplify: from 450+ products to less than 150简化：从超过450种产品缩减为150种以内Create reusable common capabilities across systems and products创造：来自系统和设备的可重复使用的能力Migrate: 30m customer lines over 5 years迁移：5年内升级换代3千万用户线Speed introduction of exciting new services新业务：加速引入

55、新的杀手级应用21C customer experience21世纪的用户体验Remaking our portfolio重新制定产品系列21CN core network convergence21世纪融合的核心网络Transforming our systems系统转型Open innovation开放/创新Source : BT/InternetAchieve a 30-40% Operating Cost Reduction Mick Reeves, BT达到3040的运维成本缩减目标Mick Reeves 英国电信CTO38Its Big and Its BoldBT 21CN：浓墨

56、重彩，划时代工程Not simply network transformation but a radical overhaul of products, systems, processof BTs business不是简单的网络升级而是对BT的商业运营，包括产品、系统和流程的一次根本上的检查Bigger annual investment than is spent on UKs motorways and trunk roads年度投资超过英国高速公路系统A world first for a telecommunications company业界大规模战略转型的先驱Source :

57、BT/Internet39What BT thought in 2005BT2005年的思路40Network Consolidation网络整合Reduce the number of networks减少网络数量Reduce the number of layers减少网络层次Reduce the number of technologies减少技术种类Gain economies of scale追求可扩展性节约模式4121st Century Network structure vision (2005)对BT 21CN网络架构的认识（2005年）BeginFibre to thePC

58、P30,000Multi-ServiceAccessDevices100MetroRouters10CoreRoutersEnd CustomerInternetPeeringDataCentreInternationalNetworksLogicalNodes80,000PCPsin the AccessNetwork100,000RemoteConcs,DLAMS& Data Muxes1000 +Voice Switchesand Data Cross Connects170 CoreSwitches(DMSU / NGS)DataCentreLogicalNodesExisting20

59、05AggregationService EdgeCoreFutureMSANMetroCore42BT History the 21CN vision 2005BT历史观点2005年对21CN的认识BTs Stated 21CN Architecture / BT发布21CN体系架构A converged network based on IP and an MPLS core基于IP/MPLS的融合网络An Intelligence layer that is mobile enabled based on 3GPP concepts基于3GPP架构的支持移动技术的智能层面OSS syst

60、ems based on integrated COTS packages基于集成COTS体系的OSS系统An open applications layer开发的应用层ITT Outcome (transport layer & business services view)标书核心思路（承载网络和商业业务）A network concept of MPLS to the network edgeMPLS到边缘A network concept suited to IP VPN business servicesIP VPN将在商业VPN业务中占支配地位43So what changed s