Thaum cov tswv ntawm cov chaw khaws ntaub ntawv tsim cov kev sib txuas ntawm cov chaw khaws ntaub ntawv thoob plaws, lawv feem ntau xav txog cov teeb meem xws li bandwidth loj, latency qis, qhov ceev ceev, kev xa tawm sai, kev ua haujlwm yooj yim thiab kev saib xyuas, thiab kev ntseeg siab siab. Tam sim no, cov thev naus laus zis loj-bandwidth OTN feem ntau yog tswj hwm los ntawm ntau lub tuam txhab tsim khoom siv telecom loj (cov chips tau tham txog cais), xws li Huawei, ZTE, thiab Aran. Cov neeg siv khoom tseem ceeb uas lawv ntsib yog cov neeg ua haujlwm telecom ib txwm muaj, yog li cov yam ntxwv ntawm cov khoom ntawm OTN feem ntau yog tsim los ua kom tau raws li cov yam ntxwv kev pabcuam ntawm cov neeg ua haujlwm no. Vim li no, OTN tau siv ntau dua hauv DCI network applications hauv kev lag luam Internet. Muaj ntau yam teeb meem tsis sib haum xeeb.
Cov yam ntxwv ntawm cov khoom siv OTN yog cov teeb meem tib yam uas DCI ntsib, kev lag luam nplua nuj, muaj peev xwm OAM muaj zog ntawm lub network, teem sijhawm thiab multiplexing muaj peev xwm ntawm ntau yam bandwidths sib txawv, kev ua txhaum kab tsis kam nyob rau hauv cov xwm txheej ntev, thiab kev siv cov hluav taws xob qis ncaj qha. Cov yam ntxwv xws li kev siv hluav taws xob tsawg ntawm cov khoom siv.
1. Cov peev xwm siv nyiaj ntau ntawm cov lag luam xav tau cov neeg ua haujlwm O&M kom ua haujlwm tau zoo dua, vam khom kev txhawb nqa los ntawm cov chaw tsim khoom, thiab muaj thev naus laus zis kaw ntau dua.
2. Muaj peev xwm OAM muaj zog, cov qauv tsis sib xws, kev sib txuas lus nyuaj dua thiab ywj pheej dua nrog cov tes hauj lwm sib txuas, thiab cov haujlwm tsis muaj txiaj ntsig kuj coj ntau tus nqi xa thiab ua haujlwm rau DCI network.
3. Cov peev xwm teem sijhawm sib txawv ntawm cov granule ua rau cov qauv encapsulation ntawm cov kev pabcuam nyuaj dua thiab muaj ntau cov bytes nested.
4. Qhov kev ua txhaum ntev ntawm kab ua rau FEC algorithm nyuaj, siv ntau dua thiab siv sijhawm ntev dua los ua tiav
5. Hom fais fab 48V-DC ntawm cov khoom siv OTN txawv ntawm tus qauv 19-nti 220V-AD (lossis 240V-DC) txee siv hauv feem ntau cov chaw khaws ntaub ntawv. Kev teeb tsa nyuaj thiab xav tau kev hloov pauv fais fab hauv chav computer
6. Cov khoom siv OTN ib txwm muaj lub thav duab loj, uas tsis haum rau kev teeb tsa hauv cov txee txheem, thiab lub peev xwm ceev tsis siab. Kev nthuav dav tom qab yog teeb meem thiab yuav tsum tau tsiv cov txee lossis rov tsim dua.
Tam sim no, peb lub network DCI feem ntau yog los muab cov kav dej rau cov ntaub ntawv hla-chaw khaws ntaub ntawv. Cov yam ntxwv tseem ceeb ntawm tus qauv lag luam yog: kev sib koom ua ke thiab ib qho bandwidth granularity xav tau, bandwidth loj, kev pabcuam hla-chaw khaws ntaub ntawv (tshwj xeeb tshaj yog ntau-active IDC, cov kev pabcuam ntaub ntawv loj)) muaj qhov xav tau latency qis thiab qhov xav tau siab rau kev ruaj khov ntawm lub network; tib lub sijhawm, vim tsis muaj cov kws tshaj lij thiab cov neeg ua haujlwm hauv kev lag luam hauv Is Taws Nem, kev ua haujlwm thiab kev saib xyuas ntawm DCI networks yuav tsum yog "yooj yim" "yooj yim" thiab "yooj yim" - cov lus tseem ceeb tau hais peb zaug (qhov twg Puas yog nws tsis yog hom network?); kev txhim kho sai ntawm Is Taws Nem ua rau kev tsim kho thiab kev nthuav dav luv dua (cov neeg teb xov tooj lub voj voog nthuav dav OTN feem ntau yog ib nrab xyoo txog ib xyoos, thaum Is Taws Nem tus kheej DCI kev nthuav dav xav tau yog 1 txog 3 lub hlis), Yog li ntawd, nws yog qhov tsim nyog los nias lub sijhawm hauv txhua yam.
Yog li ntawd, OTN muab ib qho kev daws teeb meem uas siv tau rau DCI, tab sis OTN tsis yog qhov kev daws teeb meem zoo tshaj plaws rau DCI. Tam sim no uas lub network DCI tab tom loj hlob, muaj kev xav tau ntau ntxiv rau qee qhov kev daws teeb meem tsim nyog los daws cov teeb meem xws li tus nqi mus rau kev tsim kho, kev ua haujlwm thiab kev saib xyuas. Ntau yam teeb meem uas ntsib. Thiab cov teeb meem no tsis muaj dab tsi ntau tshaj li rau qhov yuav tsum tau ua ntawm DCI network (bandwidth loj, latency qis, ceev ceev, xa tawm sai, yooj yim ua haujlwm thiab saib xyuas, thiab kev ntseeg siab siab):
1. Bandwidth loj, DCI kis network tsis muaj cov nplua nuj hom granules zoo li cov neeg teb xov tooj, cov bandwidth granules ntawm DCI kis network yooj yim dua, tam sim no feem ntau siv 10G lossis 100G, yav tom ntej 200G / 400G, thiab lwm yam, yog li tsis tas yuav ua nws nrog bandwidth loj Bandwidth ntawm lwm cov granularities. Vim tias qhov tseeb tias qhov deb ntawm DCI kis network feem ntau tsis ntev dhau, siv 400G system raws li 200G PM-16QAM dual-carrier modulation, qhov deb kis tsis muaj hluav taws xob relay tuaj yeem yog li 500 kilometers (PM-64QAM yog li 200 kilometers), yog li ntawd metro backbone kis ntawm DCI yuav tsis raug txwv los ntawm qhov deb.
2. Kev siv latency tsawg, DCI kev lag luam xav tau, tshwj xeeb tshaj yog thaum siv huab xam los sib sau cov peev txheej thiab ntau lub chaw khaws ntaub ntawv, qhov latency raug suav ntawm qib microsecond, yog li lub sijhawm xa cov ntaub ntawv yuav tsum luv li sai tau, xav kom dhau qhov ceev ntawm lub teeb. Tshem tawm cov haujlwm ua cov ntaub ntawv tsis tsim nyog thiab txo cov kev xa xov. Piv txwv li, los ntawm kev tshem tawm SD-FEC function siv los ntawm 100G OTN, ib qho rov qab-rau-rov qab tuaj yeem txuag tau 200 microseconds, thiab tshem tawm cov OTN encapsulation hla-qib tuaj yeem txuag tau kaum tawm microseconds, thiab siv cov hubspoke topology rau cov kev pabcuam tseem ceeb kom ntseeg tau tias txoj kev luv tshaj plaws. Tau kawg, nws kuj tuaj yeem koom tes nrog MPLS thiab QOS ntawm qib IP los sim ua kom ntseeg tau tias qhov qeeb ntawm qib xa cov ntaub ntawv kuj zoo dua.
3. Qhov ceev ceev, ib qho U, lossis 2U, tuaj yeem ua tiav qhov bandwidth txog li T, DWDM optical txheej thiab hluav taws xob teeb liab txheej decoupling, txhim kho qhov ceev interface ntawm lub cuab yeej, thiab txo qhov loj ntawm lub optical module. Piv txwv li, kev siv QSFP28 optical modules tuaj yeem ua kom ntseeg tau tias 100G nkag mus rau hauv lub peev xwm ntawm ib lub cuab yeej tau txhim kho zoo heev, thiab kev siv CFP2 daylighting modules ntawm sab kab tuaj yeem ua kom ntseeg tau tias qhov kis tau tus kab mob ntawm tag nrho lub cuab yeej tau txhim kho, 1U tuaj yeem yog 1.6T, 3.2T. Tam sim no, ntau yam khoom cuam tshuam tau tshwm sim hauv ntiaj teb, xws li ADVA, coriant, ciena thiab lwm lub tuam txhab. Tau kawg, hauv tsev Huawei kuj tau tshaj tawm 902 cov khoom cuam tshuam. Txawm li cas los xij, raws li qhov ua tiav ntawm tsab xov xwm no, nws zoo li qhov kev xeem nkag mus rau hauv network ntawm Ministry of Industry thiab Information Technology tsis tau ua tiav. Qhov ceev ceev yuav ua rau siv hluav taws xob ntau thiab cua sov dissipation. Yog li ntawd, thawj OTN cua sov dissipation txoj kev ntawm sab laug thiab sab xis cua nkag thiab tawm, thiab nce thiab nqis cua nkag thiab tawm yuav tsum tau pov tseg.
Cov kev cai txias ntawm cov khoom siv.
4. Kev xa tawm sai, siv cov qauv IDC 19-nti khib tam sim no, zoo ib yam li daim ntawv ntawm cov servers loj, siv AC-220V rau kev muab hluav taws xob ncaj qha, tshem tawm qhov xav tau hluav taws xob thiab kev hloov pauv txee, thiab paub tias cov khoom tuaj yeem muab tso rau ntawm cov txee tam sim ntawd tom qab lawv tuaj txog hauv chav computer, thiab tuaj yeem teeb tsa tom qab ntsaws rau hauv lub hwj chim. Kev lag luam, thiab ua haujlwm zoo hauv kev lees txais tus qauv kom ua tiav kev xa tawm sai.
5. Kev ua haujlwm yooj yim thiab kev saib xyuas, DCI tus qauv lag luam xav tau, qhov deb ntawm cov chaw khaws ntaub ntawv yuav tsis deb heev, thiab kev tswj hwm nyuaj, OAM thiab lwm yam haujlwm tsis tsim nyog los ua lub luag haujlwm loj hauv qhov xwm txheej no, thiab kev ua tiav nyuaj kuj raug txo qis. Nws txhim kho kev xa cov ntaub ntawv zoo, txhim kho lub sijhawm ua cov ntaub ntawv, thiab muaj cov kev xav tau siab dua rau thev naus laus zis thiab kaw ntau dua. Kev sib txuas cov teeb liab ncaj qha ntawm Ethernet tshem tawm cov kev siv nyuaj ntawm OTN, yog li cov kws ua haujlwm IP network ib txwm tuaj yeem ua haujlwm thiab tswj hwm DCI system. Tom qab sib koom ua ke cov interfaces tshiab sab qaum teb xws li YANG qauv, REST API, thiab netconf, DCI kev tswj hwm cov khoom siv xa mus thiab kev tswj hwm cov khoom siv IP network tau tsim nrog tib lub interface, yog li ua kom zoo dua kev tswj hwm network centralized platform.
6. Kev ntseeg siab siab, ntau txoj kev xa xov thiab kev tiv thaiv thev naus laus zis uas tsis paub txog txheej sab saud yuav txuas ntxiv ua lub luag haujlwm hauv DCI kis network. Kev ua tsis tiav ntawm qib txuas hauv qab yuav tsum tsis muaj kev cuam tshuam rau cov kev pabcuam tshwj tsis yog tias lawv raug cuam tshuam tag nrho. Kev pom lossis kev cuam tshuam, txawm tias nws yog kev tiv thaiv hloov pauv, txuas jitter, kev ncua sijhawm nce, thiab lwm yam.
Lub sijhawm tshaj tawm: Lub Ob Hlis-13-2023