地址科技园5号

年 本课程培训目掌握G.709协议基本内熟悉G.709帧结构中的关键开销字2内容提100GOTN业务需求趋

业务需求引导光传送技术演进方

传输（容量、距离、速率传送技术应对IPIPover

ServiceSTM-模型二

IPoverOTN技术标为何引入OTN技术 OTNemergesasa“MustTheopportunitywillincreasesubstantiallyoverthenextfiveOTNOpticalTransport强大的网维管理功能（电层开销，光层开销运营成本降低（网络层次减少 WDM&OTN标准G.709接 电层控制平

WDM技术vs.OTN技WDMOTNWDMOTN什么是G.709接G.709接OTH电交

以波分复用技术为基础，在光层组织网

电层

FONST系列OTN功能模 层

ODUkOTUkODUkOTUk

ODUkODUkFONST系列硬FONST系列OTN信号流 信线号路OTH电交叉技

FONST系列OTN交叉架

…

OTHvs.较大幅度的降低了CAPEX和

ODUk交叉vs.包交ODUk交包低高易难GMPLS易难FOADM与

降低网络成

λ1~λ

λ1~

λ1~

λ1~λ1~ λ1~固定波长上下设计，初期波长规划方案复杂工程升级复杂开通业务或升级扩容周期长，可靠性

重新配置波长上下，降低运维成本支持快速业务开通，满足波长租赁业务可自由升级扩容，实现任意波长到任意端口上下可实现波长到多个方向，实 度波长调度支持通道功率调整和通道功率均衡ROADM-WB和 A C 正向：实现任意波长到任意端反向：不同端口任意波长到同一端（避免波 ）二维节点业务的快速部署

支持任意波长到任意端口的指配，配合可调OTU，实现光网络波长自由上下基于WSS可从升级到4维，6维和8相 开关整列构成的OXC，连纤数量受波 限制和传输物理损伤限PXCvs.基于OTNMESH网MESH网动态连接建抗多次故流量均不影响原业BCDCDFE控制平面功

OChPayloadUnit(OPUk)OChDataUnit(ODUk)OChTransportUnit(OTUk)Non-associatedOpticalNon-associatedOpticalChannelCarrier(OCC)OpticalMultiplexSectionOpticalTransmissionSectionOTMOverheadSignalOpticalSupervisoryChannelOpticalPhysicalSectionG.709定义的OTUk帧格OTUk:光传送单OTUk帧开OriginaldataDatawitherrorsFECfield

Noise,CD,PMD,STM-64OTUwithFEC7-97-966–7OCh,

OCh, OCh,

OCADM：OpticalChannelAdd/DropMultiplexerODXC3R：O/E/Ow/Reamplification,Resha &RetimingandmonitoringR：RepeaterTCM开销为复杂网络TCM开销为复杂网络的管理带来了极大的方便。网络服务提供商可以用它 PathCMUNI-UNICMNNI-NNICM

NO NO

G.709接口优比特透明，SDH等客户信号完整性得以保持定时（Timing）透明，恒定速率的客户信号以比特同步映射保持时钟，异步映射模式通OTN帧内调整控制字节恢复定时信多种业务统一传送平台虚级联更高效传交叉连接可升更大跨距段，更远距离系统配置更加简单，生存性更 光层电层结构完分层管理 各层都具备网络课程提为何引入OTN与WDM技术联系与区OTN系统与WDM系统结构联系与区别FEC作用ROADM目前的主要应G.709接口优势内容提100GOTNITU-T在2002年发布G.709InterfacesfortheopticaltransportG.709OpticalTransportModuleofordernOTMn)的以下需求光传送体系OpticalTransportHierarchyOTNOTN分层结构及OTN STM- OTNODUk（ODUkP,OTM-

OTM-OTMNon-associatedNon-associatedOTM-n.m：n波分

OTM-

OChPayloadUnit(OPUk)OChDataUnit(ODUk)OChTransportUnit(OTUk)OpticalChannelCarrier(OCC)OpticalMultiplexSectionOpticalTransmissionSectionOTMOverheadSignalOpticalSupervisoryChannelOpticalPhysicalSection用户网络接口：UsertoNetworkInterface网络节点接口：NetworkNodeInterface Interface Interface不同厂家设备间接口－betweenequipmentofdifferentvendors相同厂家子网内接口－withinsubnetworkofonevendor

OTM

NetworkOperatorOTM

OTM

OTN信号OTM-

OTM-OTM- 用于和其他厂家的波分设备互连（在波长级互连OTN信号-OTM-OTM-0.mOTM-0.m 有特定帧格式OTN信号-OTM-

OTM-OTM-

OTMOverheadSignal由多个波长组成，每个波长都有特定的帧格式 OTNOTNOTUk帧结FAOTUkFAOTUkClientmappedinOPUkOTUkODUk4Client

38243825…OPUk-OpticalChannelPayload

kindicatesthe1ODUk-OpticalChannelData OTUk-OpticalChannelTransport Frame

OTUk帧的特低速ODUi可完全装入高速ODUk的净荷，进行汇聚，开销独帧速率针对SDH设FEC开销，提高OTUk帧的传送能字节调整技术比SDH的指针调整简开销（不含FEC）比例低 OTUk帧可方便的接入GE或10GE以太网业OTUk,ODUk,OPUk的区别与联OPUk1……7

38243825…OPUkOPUk234OPUk-OpticalChannelPayloadOTUk,ODUk,OPUk的区别与联ODUk对OTUk电层交叉调 OPUkODUkOPUkODUk1234

38243825…ODUk-OpticalChannelDataOTUk,ODUk,OPUk的区别与联OTUkFAOTUkFAOTUkOPUkOTUkODUk1234

38243825…OTUk-OpticalChannelTransportUnitFrameAlignmentOTUk,ODUk,OPUk的区别与联OPUk帧是ODUk帧的一部分ODUk帧是OTUk帧的一部分OTN帧周帧结构和长度不变（SDH不同速率，帧长不同不同速率等级，帧周期不同（SDH固定8k帧周期OTU/ODU/OPUtype 48.971us 12.191 3.035NOTE-Theperiodisanapproximatedvalue,roundedto3OTUk,ODUk,OPUk速率等

"STM-N"*238/(239-239+16=25516/16=16

238+1=

3808/16=3808

256/16=256 38243825…OTUkUkOTUk4OTUk,ODUk,OPUk速率等k12488（24882498（24882666（248829995（955310037（955310709（9553340150（3981340319（3981343018（39813注：bitratetolerance20映射与复用

映射与复用–

映射与复用–

映射与复用–

映射与复用–

客户信号映射—SDH业STM-16业STM-64业STM-256业客户信号映射—OTUk业OTU1业OTU2业OTU3业OTU4业客户信号映射—GE业GE业务映射到ODU0通道信号，映射复用遵循G.7041、G.709客户信号映射—10GE业10GE业务的映射方式主要依据G.709和G.7041的规以GFP-F方式将10Gbase-R（LANPHY）仅有效载荷部分映射为LANMAC帧采用GFP-F封装客户信号映射—40GE/100GE业17.6.4章节，AnnexB,AppendixVII和AppendixVIII的要求G.70917.6.5章节，AppendixVII的要求课程提OTUk帧结构OTUk帧的特点OTUk,ODUk,OPUkOTN帧与SDH帧区别OTUk,ODUk,OPUk如何将业务载入内容提100GOTN课程提100G与40G区别内容提100GOTNOTUk OTUk4 Framealignment 0xF6F6F62828 Multiframealignment 256 1个字节，每发送一帧此字节的内容加，例如OTUkOTUkOTUkODUk ODUk4 OTUksectionmonitoringoverhead OTUkgeneralcommunicationchannel0 overhead，all"0"OTUk321 trailtraceidentifier bitinterleavedparityOTUkSMSAPI，标示源地 用户自定义信 1123OTUkSMBIP-123OTUk123412341234123412341234FrameFramei+2FrameFramei+2Frame

OTUk12312345678 backwarderror ingalignmenterror backwarddefectindication ingalignment forfutureinternationalstandardizationallOTUk

OTUk?OTUk123412345678SM OTUk123412345678OTUkSM 123BIP00OTUkSM01

12345678有反向业务失OTUk123412345678 OTUkOTUk FEC（ForwarderrorcorrectionOTUkFECorall-(4×256OTUkFECorall-(4×2561234

3825……ODUkODUkODUkOTUk OTUk4

ODUkpathmonitoringODUktandemconnectionmonitoringODUktandemconnectionmonitoringGCC1, ODUkgeneralcommunicationAPS/PCCODUkautomaticprotectionswitchingandprotectioncommunication

ODUkfaulttypeandfaultlocationreportingcommunicationchannelODUkexperimentaloverhead ODUk 2341231231212345678| backwarderror

trailtraceidentifier

backwarddefectstatusbitsindicatingthepresenceofamaintenanceODUk123412345678ODUkPM 123BIP备BIP-8校验后的0BIP-8校验后无ODUk123412345678 PMbyte 67000，01011，10forfutureinternationalstandardization00Normalpath10Maintenancesignal:ODUk-11Maintenancesignal:ODUk-11Maintenancesignal:ODUk-ODUk

34ODUk1ODUk123

trailtraceidentifier12345678BEI/BIAEbackwarderrorindicationand ingalignment

backwarddefectstatusbitsindicatingthepresenceofTCM alignmenterror,oramaintenanceODUkC1-C1-B1- B3-A1-ODUk

ODUk12345612345678TCMbyte 6TCMbyte 6700Nosource00Inusewithout01Inusewith011,10forfutureinternational10Maintenancesignal:ODUk-11Maintenancesignal:ODUk-11ODUkTCMODUktandemconnectionmonitoringactivation/deactivationcoordinationItsdefinitionisforfurther 234ODUk 234ODUk 234 67connectionmonitoringlevelProtectionschemeusingtheAPS/PCCchannel(Note)00ODUkODUk00ODUkODUkSNC/S,ODUk01ODUkODUkSNC/S,ODUk01ODUkODUkSNC/S,ODUk10ODUkODUkSNC/S,ODUk10ODUkODUkSNC/S,ODUk11ODUkODUkSNC/S,ODUk11OTUkODUkODUk 234ODUk 234012ForwardBackwardForwardForwardfield0 OperatorBackwardfield OperatorODUkEXP&ODUk

34ODUkOPUkOPUkOPUkOTUkMap&onspecific OTUkMap&onspecific401……01…… &concatenationspecificandoverheadassociatedwiththe ofclientsignalsintotheOPUk payloadOPUk0101…… PT，净荷类型，一个字节 一般对应PT失配告 except