广电IP网络架构-思科

©2006CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialPresentation_ID1CableSPIPBackboneDesign2009.12©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview2广电IPNGN网络建设需求及目标‡数字电视业务骨干网能够满足用户基数以上互动电视用户的发展需要。‡建设广电省网架构，解决广电各地市分散的网络架构。‡家庭用户宽带上网业务数据业务发展需CMTS、Wideband、DOCSIS3.0等多种方式实现宽带入户。‡实现数据,语音,视频多业务的承载,构建一个易管理可运营的高效稳定的满足未来3－5年业务发展的IP/MPLS综合业务承载网©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview3‹公众互联网业务‡专线接入业务‡Internet‹大客户‡DIA（大客户互联网接入）‡L2VPN‡L3VPN‹NGN‡VOIP‡DVB‡VOD‡3G广电网络承载的业务©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview4CISCOCESNA架构设计说明CESNAfocusesontheend-to-endIP/MPLSnetworkarchitectureCESNA架构©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview5CESNA架构设计ƒCESNA:CableEnd-to-endSolutionNetworkArchitecture（广电运营商端到端网络架构）是专门为广电运营商布署多服务(语音、视频、数据）设计、开发的已验证的解决方案。ƒCESNA提供一个基于全IP架构的解决方案：–面向服务的架构设计–确保网络架构适应未来的业务需求–端到端的网络架构：从骨干至接入层CESNAfocusesontheend-to-endIP/MPLSnetworkarchitecture©2006CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialPresentation_ID6CiscoSystemsConfidentialCESNA3.0架构端到端广电下一代网络-功能块城域网接入网Residential7600/ASR9kCMTS/EPonBusinessInternetME6524/PECRS-1RouterSASTBorDVRISRRouterCiscoCM/eMTA/eRouter7600/ASR9kISRRouterCRS-1RouterSAQAMHFCCRS-1RouterCRS-1RouterCPE省级骨干网7600/ASR9kCRS-1Router7600/ASR9k7600/ASR9k7600/ASR9k城域SDCVideoComplexVoiceComplexNetworkMgtComplexIPSecurityComplex省级SDCVideoComplexSDVVoDDvodDS/DBHFCPPPoE/L2MESwitchGEor10GEREPRings©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview7CESNA架构组成ƒCESNA架构由以下功能块组成：-1.省干网2.城域网3.互联网接入4.服务数据中心5.接入网6.客户端设备CPEƒCESNA定义的每个功能块具有独立布置、可管理、高可控的特性©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview8省级广电网络业务–VOD•Vault和Streamer的调度流量（约每个地市Streamer容量的5%）•流量中等（如10万用户的城市，30%VOD用户即3万，10%的并发－即3K，也就是3K*4M=12G，10%的调度流量1.2G左右–InternetHighSpeedData•每3-5万户，1G的出口，同时对省干相同–BOSS和网管•流量小，但重要（低延时，高优先级）–VoIP•internalCall•IPCC呼叫中心•流量小，但重要（低延时，高优先级）©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview9广电省干网络设计－重点‡省干网络设计重点¾可靠性¾容量¾逻辑分离（安全）¾运营商–路由设计（IGP和BGP)¾省网骨干¾城域网–MPLSVPN设计‡业务模型设计–Internet–VOD–DOCSIS3.0/EPON+EOC/PPPoE/FTTH–VPN/L3&L2VPN©2006CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialPresentation_ID10CiscoSystemsConfidentialCESNA3.0架构模块化设计思想城域网接入网Residential7600/ASR9kCMTS/EPonBusinessInternetME6524/PECRS-1RouterSASTBorDVRISRRouterCiscoCM/eMTA/eRouter7600/ASR9kISRRouterCRS-1RouterSAQAMHFCCRS-1RouterCRS-1RouterCPE省级骨干网7600/ASR9kCRS-1Router7600/ASR9k7600/ASR9k7600/ASR9k城域SDCVideoComplexVoiceComplexNetworkMgtComplexIPSecurityComplex省级SDCVideoComplexSDVVoDDvodDS/DBHFCPPPoE/L2MESwitchGEor10GEREPRings©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview11网络结构设计-省网骨干整个网络采用层次化设计，从网络的逻辑结构来看，网络分为两层：骨干网和城域网。骨干网由大容量具有IP/MPLS路由交换功能的设备构成；城域网由高性能、高吞吐能力的业务交换汇聚设备和业务接入设备构成IP/MPLS接入层‡核心采用CISCOCRS1(大省核心节点，小规模节点建议ＡＳＲ９Ｋ）‡城域网核心采用ASR9K/7600。‡城域网核心与省网核心采用万兆或多GE双规上联结构。‡SDC与省网核心根据业务流量和HA设计原则采用N×10GE互联。‡互联网出口设计©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview12省骨干网络省级省级SDCSDC。。。省骨干省骨干SP3SP2SP1大型城域网小型城域网省会节点©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialASR9000HardwareOverview13010203020052006200720082009201020112012ExabytespermonthVoIPVideoCommunicationsGamingWeb/EmailP2P-OtherP2P-VideoInternetVideotoTVInternetVideotoPCCommercialVoDSource:CiscoVisualNetworkingIndex–Forecast,2007-2012非视频流量非视频流量––在在20122012流量增长一倍流量增长一倍视频流量视频流量––在在20122012流量增长四倍流量增长四倍在在20122012视频流量将占视频流量将占IPIP总流量的总流量的87%87%视频应用将迎来千万亿兆(ZettaByte1021)时代全球IP流量增长情况©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialASR9000HardwareOverview14核心设备选型依据ƒ充分考虑广电的业务特性，以视频为主。IP化，数字化，高清化视频业务导致流量增长呈爆炸性增长。ƒ要求设备具有：¾高扩展性（适应未来业务增长）¾高稳定性（强健的核心保证客户体验）¾组播能力（适应广电视频业务的特点）¾视频感知能力（设备具有感知视频级业务的能力）©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview15用户线卡机架LCC交换矩阵机架FCCCiscoCRS-1简介TwoMainSystemBuildingBlocks100mFRONT:24Fabriccards2SCCardsBACK:OpticalFiberInterconnectPanels•OpticalBackplane•RedundantFans/PowerFRONT:16/8/4InterfaceSlots2RPSlotsBACK:16/8/4LCSlots8or4FabricCardSlots•Mid-PlaneDesign•RedundantFans/Power©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview16CiscoCRS-1的两种基本配置模式TwoBasicConfigurations（单机架和多机架）单机架Standalone(320G/640Gor1.2T)ƒ16/8/4LCandPLIMslotsƒNoFabricchassisrequired多机架MULTI-CHASSISCONFIG(1.2TTO92T)X(1to72)LinecardchassisY(1to8)fabricchassis©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview17MultishelfSWITCHFABRICUPGRADESARENON-SERVICEAFFECTINGMaxLCchassis(fullLCchassisonly*)MaxFabricChassisConfig10728Max40GSlots4/8/161152MaxBWTbps320/640Gbps/1.2Tbps92TbpsStandaloneCiscoCRS-1系统的可扩展性CapacityOverview©2008CiscoSystems,Inc.Allrightsreserved.CiscoConfidentialVikingHardwareOverview18CRS-1产品线UnparalleledInvestmentProtectionƒModularmid-planedesign–improvedsparingefficiencyƒSharedPortAdaptorsforcrossproductfamilyinvestmentprotectionCommonHardwareandSoftwareacrossCRS-1productfamilyCRS-1ModularServicesCardCRS-1FixedPh