地址科技園5號

年 本課程培訓(xùn)目掌握G.709協(xié)議基本內(nèi)熟悉G.709幀結(jié)構(gòu)中的關(guān)鍵開銷字2內(nèi)容提100GOTN業(yè)務(wù)需求趨

業(yè)務(wù)需求引導(dǎo)光傳送技術(shù)演進方

傳輸（容量、距離、速率傳送技術(shù)應(yīng)對IPIPover

ServiceSTM-模型二

IPoverOTN技術(shù)標(biāo)為何引入OTN技術(shù) OTNemergesasa“MustTheopportunitywillincreasesubstantiallyoverthenextfiveOTNOpticalTransport強大的網(wǎng)維管理功能（電層開銷，光層開銷運營成本降低（網(wǎng)絡(luò)層次減少 WDM&OTN標(biāo)準(zhǔn)G.709接 電層控制平

WDM技術(shù)vs.OTN技WDMOTNWDMOTN什么是G.709接G.709接OTH電交

以波分復(fù)用技術(shù)為基礎(chǔ)，在光層組織網(wǎng)

電層

FONST系列OTN功能模 層

ODUkOTUkODUkOTUk

ODUkODUkFONST系列硬FONST系列OTN信號流 信線號路OTH電交叉技

FONST系列OTN交叉架

…

OTHvs.較大幅度的降低了CAPEX和

ODUk交叉vs.包交ODUk交包低高易難GMPLS易難FOADM與

降低網(wǎng)絡(luò)成

λ1~λ

λ1~

λ1~

λ1~λ1~ λ1~固定波長上下設(shè)計，初期波長規(guī)劃方案復(fù)雜工程升級復(fù)雜開通業(yè)務(wù)或升級擴容周期長，可靠性

重新配置波長上下，降低運維成本支持快速業(yè)務(wù)開通，滿足波長租賃業(yè)務(wù)可自由升級擴容，實現(xiàn)任意波長到任意端口上下可實現(xiàn)波長到多個方向，實 度波長調(diào)度支持通道功率調(diào)整和通道功率均衡ROADM-WB和 A C 正向：實現(xiàn)任意波長到任意端反向：不同端口任意波長到同一端（避免波 ）二維節(jié)點業(yè)務(wù)的快速部署

支持任意波長到任意端口的指配，配合可調(diào)OTU，實現(xiàn)光網(wǎng)絡(luò)波長自由上下基于WSS可從升級到4維，6維和8相 開關(guān)整列構(gòu)成的OXC，連纖數(shù)量受波 限制和傳輸物理損傷限PXCvs.基于OTNMESH網(wǎng)MESH網(wǎng)動態(tài)連接建抗多次故流量均不影響原業(yè)BCDCDFE控制平面功

OChPayloadUnit(OPUk)OChDataUnit(ODUk)OChTransportUnit(OTUk)Non-associatedOpticalNon-associatedOpticalChannelCarrier(OCC)OpticalMultiplexSectionOpticalTransmissionSectionOTMOverheadSignalOpticalSupervisoryChannelOpticalPhysicalSectionG.709定義的OTUk幀格OTUk:光傳送單OTUk幀開OriginaldataDatawitherrorsFECfield

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

OCh, OCh,

OCADM：OpticalChannelAdd/DropMultiplexerODXC3R：O/E/Ow/Reamplification,Resha &RetimingandmonitoringR：RepeaterTCM開銷為復(fù)雜網(wǎng)絡(luò)TCM開銷為復(fù)雜網(wǎng)絡(luò)的管理帶來了極大的方便。網(wǎng)絡(luò)服務(wù)提供商可以用它 PathCMUNI-UNICMNNI-NNICM

NO NO

G.709接口優(yōu)比特透明，SDH等客戶信號完整性得以保持定時（Timing）透明，恒定速率的客戶信號以比特同步映射保持時鐘，異步映射模式通OTN幀內(nèi)調(diào)整控制字節(jié)恢復(fù)定時信多種業(yè)務(wù)統(tǒng)一傳送平臺虛級聯(lián)更高效傳交叉連接可升更大跨距段，更遠(yuǎn)距離系統(tǒng)配置更加簡單，生存性更 光層電層結(jié)構(gòu)完分層管理 各層都具備網(wǎng)絡(luò)課程提為何引入OTN與WDM技術(shù)聯(lián)系與區(qū)OTN系統(tǒng)與WDM系統(tǒng)結(jié)構(gòu)聯(lián)系與區(qū)別FEC作用ROADM目前的主要應(yīng)G.709接口優(yōu)勢內(nèi)容提100GOTNITU-T在2002年發(fā)布G.709InterfacesfortheopticaltransportG.709OpticalTransportModuleofordernOTMn)的以下需求光傳送體系OpticalTransportHierarchyOTNOTN分層結(jié)構(gòu)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用戶網(wǎng)絡(luò)接口：UsertoNetworkInterface網(wǎng)絡(luò)節(jié)點接口：NetworkNodeInterface Interface Interface不同廠家設(shè)備間接口－betweenequipmentofdifferentvendors相同廠家子網(wǎng)內(nèi)接口－withinsubnetworkofonevendor

OTM

NetworkOperatorOTM

OTM

OTN信號OTM-

OTM-OTM- 用于和其他廠家的波分設(shè)備互連（在波長級互連OTN信號-OTM-OTM-0.mOTM-0.m 有特定幀格式OTN信號-OTM-

OTM-OTM-

OTMOverheadSignal由多個波長組成，每個波長都有特定的幀格式 OTNOTNOTUk幀結(jié)FAOTUkFAOTUkClientmappedinOPUkOTUkODUk4Client

38243825…OPUk-OpticalChannelPayload

kindicatesthe1ODUk-OpticalChannelData OTUk-OpticalChannelTransport Frame

OTUk幀的特低速ODUi可完全裝入高速ODUk的凈荷，進行匯聚，開銷獨幀速率針對SDH設(shè)FEC開銷，提高OTUk幀的傳送能字節(jié)調(diào)整技術(shù)比SDH的指針調(diào)整簡開銷（不含F(xiàn)EC）比例低 OTUk幀可方便的接入GE或10GE以太網(wǎng)業(yè)OTUk,ODUk,OPUk的區(qū)別與聯(lián)OPUk1……7

38243825…OPUkOPUk234OPUk-OpticalChannelPayloadOTUk,ODUk,OPUk的區(qū)別與聯(lián)ODUk對OTUk電層交叉調(diào) OPUkODUkOPUkODUk1234

38243825…ODUk-OpticalChannelDataOTUk,ODUk,OPUk的區(qū)別與聯(lián)OTUkFAOTUkFAOTUkOPUkOTUkODUk1234

38243825…OTUk-OpticalChannelTransportUnitFrameAlignmentOTUk,ODUk,OPUk的區(qū)別與聯(lián)OPUk幀是ODUk幀的一部分ODUk幀是OTUk幀的一部分OTN幀周幀結(jié)構(gòu)和長度不變（SDH不同速率，幀長不同不同速率等級，幀周期不同（SDH固定8k幀周期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映射與復(fù)用

映射與復(fù)用–

映射與復(fù)用–

映射與復(fù)用–

映射與復(fù)用–

客戶信號映射—SDH業(yè)STM-16業(yè)STM-64業(yè)STM-256業(yè)客戶信號映射—OTUk業(yè)OTU1業(yè)OTU2業(yè)OTU3業(yè)OTU4業(yè)客戶信號映射—GE業(yè)GE業(yè)務(wù)映射到ODU0通道信號，映射復(fù)用遵循G.7041、G.709客戶信號映射—10GE業(yè)10GE業(yè)務(wù)的映射方式主要依據(jù)G.709和G.7041的規(guī)以GFP-F方式將10Gbase-R（LANPHY）僅有效載荷部分映射為LANMAC幀采用GFP-F封裝客戶信號映射—40GE/100GE業(yè)17.6.4章節(jié)，AnnexB,AppendixVII和AppendixVIII的要求G.70917.6.5章節(jié)，AppendixVII的要求課程提OTUk幀結(jié)構(gòu)OTUk幀的特點OTUk,ODUk,OPUkOTN幀與SDH幀區(qū)別OTUk,ODUk,OPUk如何將業(yè)務(wù)載入內(nèi)容提100GOTN課程提100G與40G區(qū)別內(nèi)容提100GOTNOTUk OTUk4 Framealignment 0xF6F6F62828 Multiframealignment 256 1個字節(jié)，每發(fā)送一幀此字節(jié)的內(nèi)容加，例如OTUkOTUkOTUkODUk ODUk4 OTUksectionmonitoringoverhead OTUkgeneralcommunicationchannel0 overhead，all"0"OTUk321 trailtraceidentifier bitinterleavedparityOTUkSMSAPI，標(biāo)示源地 用戶自定義信 1123OTUkSMBIP-123OTUk123412341234123412341234FrameFramei+2FrameFramei+2Frame

OTUk12312345678 backwarderror ingalignmenterror backwarddefectindication ingalignment forfutureinternationalstandardizationallOTUk

OTUk?OTUk123412345678SM OTUk123412345678OTUkSM 123BIP00OTUkSM01

12345678有反向業(yè)務(wù)失OTUk123412345678 OTUkOTUk FEC（ForwarderrorcorrectionOTUkFECorall-(4×256OTUkFECorall-(4×2561234

3825……ODUkODUkODUkOTUk OTUk4

ODUkpathmonitoringODUktandemconnectionmonitoringODUktandemconnectionmonitoringGCC1, ODUkgeneralcommunicationAPS/PCCODUkautomaticprotectionswitchingandprotectioncommunication

ODUkfaulttypeandfaultlocationreportingcommunicationchannelODUkexperimentaloverhead ODUk 2341231231212345678| backwarderror

trailtraceidentifier

backwarddefectstatusbitsindicatingthepresenceofamaintenanceODUk123412345678ODUkPM 123BIP備BIP-8校驗后的0BIP-8校驗后無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，凈荷類型，一個字節(jié) 一般對應(yīng)PT失配告 except