Ukuphendula kwiingxaki zemveliso ezijongene nabathengi bethu, iinjineli ze-R & D zenkampani yethu ziya kuphinda zivelise kwakhona iingxaki malunga neemveliso ze-XPON ONU / GPON ONU ngokweemfuno zomthengi, kwaye ukuba kuyimfuneko, ziya kuphinda zivelise indawo yokusetyenziswa komthengi kwaye ziqhube uvavanyo lokuxhoma. kwilebhu yethu yeR&D.Izixhobo ze-olt zenkampani yethu ziya kusetyenziswa ngexesha lovavanyo, kwaye ukuphuculwa komsebenzi wesoftware kunye nokuphathwa kwebug kuya kwenziwa kuyo.
Siza kurekhoda iimveliso phantsi kovavanyo, njenge-XPON ONU/GPON ONU, ukwenza i-log log.Kwi-mount log, amandla okukhanya kwe-ONU ehlakaniphile okanye ikhonkco ye-fiber optical iya kubhalwa.Xa sivavanya inguqulelo entsha yomqhubi phantsi kweGPON OLT kunye ne-EPON OLT: SFU PPPOE udayalo olungaphawulwanga phantsi kweGPON ngeli xesha kufuneka kuphela ukubhalisa nokuqwalasela inkonzo, ngaphandle komyalelo we-ont port vlan 1 18 eth 1 transparent.
Ukusuka kwi-8-port yakho yonxibelelwano olukrelekrele ONU umenzi wemodyuli yekati yokubona
2. Malunga noLondolozo lweZixhobo ze-OLT
Xa isixhobo seOLT sibandakanya uqwalaselo lwenkonzo ye-SFU, ukuba uhlobo lwe-ONU luyi-SFU, kwaye izibuko le-ONU LAN lifumana idilesi ye-IP eyabelwe umaleko ophezulu wesango, kufuneka udibanise uqwalaselo lweVLAN yezibuko elihambelanayo ZXAN (config) # pon- onu-ng gpon-onu_ 1/2/1:6。 ZXAN(gpon-onu-mng 1/2/1:6)#vlan port eth_ 0/1 mode tag vlan 100
Kuqwalaselo lwenkonzo yeCATV, bhekisa kwinkxaso ye-ONU ukulawula iCATV switch ON/OFF ngeOMCI (ME82)
ZXAN(config)#pon-onu-mng gpon-onu_ 1/2/1:6
ZXAN(gpon-onu-mng 1/2/1:6)#ividiyo yojongano lwevidiyo_ 0/1 isitshixo
ZXAN(gpon-onu-mng 1/2/1:6)#ividiyo yojongano lwevidiyo_ 0/1 ukuvulwa kwemeko
Ukusuka kwigumbi lakho lonxibelelwano lwe-OLT umenzi wezixhobo!
3. Intshayelelo yeteknoloji yenethiwekhi ye-XPON ONU
I-XPON ONU iteknoloji esaphuhliswayo, kwaye isicelo sayo e-China sikhula ngokuthe ngcembe.I-China Telecom iye yaqulunqa umgangatho.Kwinkqubo yokuphucula ngokuthe ngcembe umgangatho, ngenxa yesicelo esifanayo kunye nokubekwa kwe-DSL kunye ne-XPON ONU, amava olawulo oluvuthiweyo kunye neteknoloji kwintsimi ye-DSL isetyenziswe ngokufanelekileyo kwireferensi.I-TR101 imele uphuhliso olulandelayo kunye neemfuno zobugcisa / zolawulo kwintsimi ye-DSL, kwaye i-CTC XPON ONU iya kufunda ngakumbi okanye ngaphantsi kuyo.
Indlela yokufuduka kwi-ATM-based DSL network (TR059) ukuya kwi-Ethernet-based DSL network
Ukubonelela nge-bandwidth ephezulu kunye neenkonzo ezityebileyo ze-IP (Ividiyo, i-VOIP, iMidlalo, i-L2VPN / IPVPN, njl.
Ingcono IP QOS
Kubandakanya iimfuno zobugcisa kunye nolawulo lwemisebenzi ephambili efana neVLAN, QOS, Multicast, njl
4. I-10G GPON ONU Isiseko soBugcisa
Uphuhliso olusemgangathweni lwe-10G GPON ONU:
(1) I-FSAN ihlula i-PON yesizukulwana esilandelayo kwizigaba ezibini: I-NGA1 isekelwe kwi-TDMA PON ukwenza isantya esiphezulu.Isantya salo sichazwa njenge-10Gbps.I-NGA2 yingxoxo yokuphuculwa kobuchwepheshe obunokwenzeka kunye nezinye iinjongo ezingacacanga ze-NG-PON1.Ngokomzekelo, i-WDM PON, i-OFDM, njl njl. I-NG-PON ingasetyenziswa kakuhle kwi-FTTx, njengabasebenzisi bezoshishino, abasebenzisi ngabanye kunye ne-backhaul yeselula.
(2)ITU NGA1 XGPON1: 10G GPON Asymmetric:Ipapashiwe G.987.1&G.987.2;G.987.3&G.I-988 yapapashwa ngoJuni 2010.ITU NGA1 XGPON2: 10G GPON Symmetric:Ingxoxo iqala ngo-2010.Q1.Enye inokwenzeka kukugqithisa i-symmetric 10G GPON kunye nokufudukela ngokuthe ngqo kwi-NGA2.
5. Ukwakhiwa kwendawo yesikhululo sekhowudi yezixhobo zeOLT
Singumenzi wezixhobo ze-OLT, kwaye ukwakhiwa kokusingqongileyo kwesikhululo sekhowudi kuya kubandakanyeka kwigumbi lethu lonxibelelwano.
Malunga nokwakhiwa kokusingqongileyo kwesoftware ye-Tftpd32:
1. Faka intambo yesiriyali kwimveliso yeOLT.Njengoko kuboniswe kumzobo ongezantsi: ikhonkco eliphezulu yintambo ye-serial port, kwaye ikhonkco engezantsi yintambo yenethiwekhi.
2. Vula ikhompyutha kwaye ukhethe “isoftware yeTftpd32″.
3. Khetha ifolda yendawo apho i-Tftpd32 ifakwe khona.
Ikhowudi yesixhobo seOLT bhala-v8 ulwakhiwo lokusingqongileyo lwesoftware
1. Khetha i-OLT write-v8 isoftwe, cofa ekunene ukuze uvule indawo ekuyo ifayile.
2. Hlaziya ifayile yophuculo engqinelanayo ngokweemfuno zemveliso yeOLT.
Ikhowudi yesixhobo seOLT bhala-v8 ulwakhiwo lokusingqongileyo lwesoftware
1. Ukuba ikhowudi ibhalwe ngempumelelo, i-interface yekhompyutha iya kubonisa eluhlaza "PASS"
2. Emva kokuba ikhowudi ibhalwe ngempumelelo, ncamathelisa iphepha leleyibhile ye-Mac ehambelanayo kwicala elingasemva lasekhohlo lemveliso yeOLT.
6. Unxibelelwano lwe-onu / i-fiber ye-fiber onu yokuqalisa uhlalutyo
Malunga nokuba yintoni i-uboot: i-uboot yinkqubo yokuqalisa ngokubanzi – i-bootloader.Qalisa, gqibezela ukuqaliswa kwehardware, qalisa umlayishi weqonga lehardware, qalisa ihardware, kwaye ulayishe inkqubo yokusebenza.Xhasa i-hardware eyahlukeneyo, njenge-ARM, i-MIPS, i-X86, i-AVR32, i-architecture ye-RISC-V, kunye neenkqubo ezahlukeneyo zokusebenza, ezifana ne-WinCE, i-Linux kernel, inkqubo yokusebenza ye-Android Indima ye-uboot kukuqalisa i-CPU kwinqanaba lokuqala, bhala ulwimi lwendibano, qalisa i-cache, i-MMU, iwotshi, i-watchdog, i-DDR3, i-eMMC, iqalise kwinqanaba lesibini, kwaye iqalise kwinqanaba lebhodi.Ngokubanzi, ibhalwe ngolwimi lwe-C, qalisa i-serial port, inethiwekhi yekhadi, i-usb, i-lcd, kunye nokubonelela ngezixhobo ezininzi.Ngenisa umgca womyalelo we-uboot, sebenzisa umyalelo we-uboot, kwaye ulayishe inkqubo yokusebenza.
Malunga neLinux kernel:
Indima ye-kernel: ulawulo lwenkqubo kunye nonxibelelwano lwenkqubo: ukudalwa kwenkqubo kunye nokucima, ukuthintela okuphambili phakathi kweenkqubo, ukucwangciswa kwexesha lokujikeleza kweenkqubo, kunye nonxibelelwano phakathi kweenkqubo.Ulawulo lwememori: i-algorithm yokwabiwa kwememori.Isithuba senkumbulo yenkqubo nganye sinikezelwe yi Linux.Iinkqubo zefayile ezixhaswayo zinokujolisa kubaqhubi beLinux: izixhobo zabalinganiswa, izixhobo zebhloko, izixhobo zenethiwekhi, iziphazamiso, kunye neewotshi zekernel ngekati/proc/iinkqubo zefayile, 4) ulawulo lwesixhobo.Iprothokholi yenethiwekhi: TCP/IP.Iwebhusayithi esemthethweni yeLinux kernel:https://www.kernel.org/
Okwangoku, unxibelelwano lwethu lwe-onu/optical fiber onu lungenile kuhlolo lwethu lokhuseleko, ukhuseleko lwenethiwekhi yehotele kunye nekhampasi yothungelwano.Ukuba ufuna ukwazi ngakumbi malunga nolwazi lwangaphakathi lwemveliso, nceda ufunde amanye amaxwebhu afanelekileyo!
7. I-ONU Product Foundation CLI
Malunga nemodeli yethu yemveliso ye-ONU ekrelekrele:
1, iseti yeflash DEFAULT_ DEVICE_NAME HUR2102XR//Isixhobo-Igama kwiphepha lewebhu
2, iseti yeflash GPON_ ONU_ Umzekelo oxelwe kwi OLT kwiMODE HUR2102XR//GPON mode
3, iseti yeflash GPON_ ONU_ MODEL HUR2102XR//Iimodeli ezixelwe kwiOLT kwimo yeGPON
4, iseti yeflash GPON_ ONU_ MODEL HUR2102XR//Iimodeli ezixelwe kwiOLT kwimo yeGPON
Iimveliso eziphambili zenkampani yethu olt onu/ac onu/gpon onu/xpon onu/catv onu zonke zimveliso ezishushu zenkampani, ezinokusebenzisana nokubekwa esweni kokhuseleko, ukhuselo lwenethiwekhi yehotele kunye nokhuseleko lwenethiwekhi yekhampasi.Ukuba unomdla, ungaqhagamshelana nathi kwiphepha lethu lasekhaya.Sineqela le-R&D yobuchwephesha, intengiso yangaphambili kunye neqela lasemva kokuthengisa.Ubume bemveliso obusemgangathweni.Kuya kubakho ishishini eliphezulu elinokwazisa ngemveliso yenkampani yethu kunye nemisebenzi ehambelanayo yemodeli kuwe phambi kokuthengisa, kwaye iqela lenkonzo yobuchwephesha liya kukhapha emva kokuthengisa.Wamkelekile!
8. Inkcazo yemodyuli ye-sfp optical fiber
Inkcazo yemodyuli ye-optical: Imodyuli ye-optical iqulunqwe izixhobo ze-optoelectronic, iisekethe ezisebenzayo kunye ne-optical interfaces.Izixhobo ze-optoelectronic ziquka iinxalenye ezimbini: ukuhanjiswa kunye nokwamkela.Ngamafutshane, umsebenzi wemodyuli ye-optical kukuguqulwa kwe-photoelectric.Isiphelo sokudlulisa siguqula umqondiso wombane ube ngumqondiso we-optical.Emva kokudluliselwa nge-fiber optical, isiphelo sokufumana siguqula isignali ye-optical ibe ngumqondiso wombane.
Uhlobo lwemodyuli yokubona:
1, Ngephakheji: 1X9, GBIC, SFF, SFP, XFP, SFP+, X2, XENPAK, 300pin
I-2, Ukuhlelwa ngokujongana kombane: iplagi eshushu (umnwe wegolide) (imodyuli ye-5g ye-optical / 1.25g imodyuli ye-optical / 10g imodyuli ye-optical), i-pin welding style (1 × 9/2 × 9 / SFF)
Ngokuqhelekileyo, umqondiso ungaphezulu kwe-2.5G, kwaye kukho ilahleko ethile yesignali xa kusetyenziswa indlela ye-pin welding.Xa ingaphezulu kwe-10G, kufuneka usebenzise umnwe wegolide.Ke ngoko, imodyuli ephezulu yangoku yonxibelelwano yombane ikwimo yeminwe yegolide.Nangona kunjalo, inzuzo ye-row pin welding kukuba iqinile kunomnwe wegolide.Kwezinye iimeko ezikhethekileyo, ujongano lwe-welding pin kufuneka lusetyenziswe.
Ukuba ufuna ukwazi ngakumbi malunga ne-gigabit yemodyuli enye ye-sfp optical module okanye ezinye iintlobo zeemveliso zemodyuli, nceda uqhagamshelane nathi kwiphepha lasekhaya!
9. ISakhiwo seModyuli ye-SFP yoNxibelelwano lwe-Optical
Nangona iphakheji, isantya kunye nomgama wokuhanjiswa kweentlobo ezahlukeneyo zeemodyuli ze-optical zihlukile, ukubunjwa kwazo kwangaphakathi kuyafana.Imodyuli ye-transceiver ye-SFP ye-transceiver optical ngokuthe ngcembe ibe yinto ehamba phambili yesicelo ngenxa ye-miniaturization yayo, iplagi eshushu elula, inkxaso ye-SFF8472 esemgangathweni, ukufundwa kwe-analog efanelekileyo, kunye nokuchaneka okuphezulu (ngaphakathi +/- 2dBm).Oku kulandelayo ngumzekelo wemodyuli ye-SFP optical ukwazisa ukubunjwa kwayo kwangaphakathi kunye nemigaqo yokusebenza enxulumeneyo:
Ukwakhiwa okusisiseko kwemodyuli ye-optical kubandakanya la macandelo alandelayo:
1. Isixhobo se-Optical: isixhobo se-optical sisixhobo esihlanganisiweyo esihlanganisiweyo esinezixhobo ezimbalwa ze-optoelectronic kunye ne-IC, i-passive components (ezifana nokuchasana, i-capacitance, i-inductance, i-inductance, i-microlens, i-isolator), i-fiber optical kunye ne-wiring yensimbi, ezidityanisiweyo kwaye zipakishwe kunye ukugqibezela imisebenzi enye okanye emininzi.
2. Ibhodi yesekethe eDityanisiweyo (PCBA): Yonke inkqubo ye-PCB engenanto ibhodi exhonywa nge-SMT (i-chip mounting) okanye nge-DIP plug-in, ekubhekiselwa kuyo njenge-PCBA.Isekethe yokuhambisa i-Optical / i-optical receive circuit, i-chip (i-chip yokulawula, i-chip yokugcina), i-amplifier (i-amplifier yokunciphisa), i-clock data recovery (CDR), umnwe wegolide
3. Igobolondo: izixhobo zangaphandle zibandakanya igobolondo (iphepha lentsimbi elingaphezulu), ukuvula inxalenye, i-buckle, isiseko (i-zinc alloy die-casting), i-ring ring, iplagi yerabha, kunye nombala wokutsala umnxeba unokuchonga uhlobo lweparameter yemodyuli.
10. Uhlalutyo lwenkqubo ye-SMT (SMT) ubunzima bemodyuli ye-PCB 'A
Umthamo wemodyuli ye-optical ngokwayo incinci kakhulu, kwaye ingxinano yecandelo kwi-PCB ehambelana nayo 'A inkulu kwaye ubungakanani buncinci.Ngokubanzi, amacandelo e-chip apakishwa kakhulu kwiphakheji ye-0402, kwaye iphakheji ye-0201 nayo iyakhuthazwa ngokuthe ngcembe.Ukongezelela, ngenxa yokuba imodyuli ye-optical kufuneka idibaniswe nesikhululo sesiseko senkqubo ngokusebenzisa i-Golden Finger, ingxaki "yokungcola" ye-Golden Finger kwinkqubo ye-SMT nayo ibe enye yeengxaki zenkqubo.
Ukongeza, ngenxa yenqanaba eliphezulu lokudityaniswa, ezinye iimodyuli ze-PCBA kufuneka zamkele ezinye iindlela zokuyila inkqubo:
➢ Ngesidibanisi somngxuma (THC: Nge-Hole Component) isebenzisa inkqubo entsha yokuqukumbela umngxuma (THR: Through Hole Reflow);
➢ Ibhodi yesekethe ethambileyo eprintiweyo (FPC) kunye nebhodi yesekethe eprintiweyo (PCB) zidityaniswe ngokudityaniswa kweebhodi ezithambileyo neziqinileyo (FoB: FPC on Board);
➢ 0402 inkqubo entsha ye-3D ye-welding ye-welding ye-welding phakathi kwe-chip resistance kunye ne-capacitance (CoC: Chip on Chip).
Wamkelekile ukuba ufunde ngakumbi malunga nolwazi lwemveliso yonxibelelwano lwemodyuli ye-optical module, imodyuli ye-pluggable optical, i-10MW imodyuli yokukhanya, imodyuli yonxibelelwano olubonakalayo, imodyuli yenethiwekhi ye-optical kunye nemodyuli yonxibelelwano yonxibelelwano kwiwebhusayithi yenkampani yethu.Okwangoku, iimveliso zemodyuli ye-optical zingasetyenziswa kunxibelelwano lwedatha, izinto ezisetyenziswa kwigumbi lekhompyuter, ukubekwa esweni kokhuseleko kunye nolawulo lwamashishini.
11. Uphuhliso lweTrendi yeeModyuli ze-Optical
1. Miniaturization
Okwangoku, ukhuphiswano kwimarike yonxibelelwano lwe-optical luba lubi ngakumbi nangakumbi, umthamo wezixhobo zonxibelelwano uya usiba mncinci kwaye uncinci, kwaye ingxinano ye-interface equlethwe kwibhodi ye-interface iba phezulu nangaphezulu.Imodyuli yendabuko ye-optical ehlukaniswe kwi-laser kunye ne-detector ibe nzima ukulungelelanisa neemfuno zezixhobo zonxibelelwano zanamhlanje.Ukuze kuhlangatyezwane neemfuno zezixhobo zonxibelelwano zezixhobo ze-optical, iimodyuli ze-optical ziphuhlisa ngokubhekiselele kwiiphakheji ezincinci ezidibeneyo.Iimodyuli ze-optoelectronic ezidityanisiweyo kakhulu zenza ukuba abasebenzisi basebenze izibonakaliso ze-analog ze-optoelectronic ze-speed-speed, banciphise i-R & D kunye nomjikelezo wokuvelisa, ukunciphisa iintlobo zamacandelo athengiweyo, kunye nokunciphisa iindleko zokuvelisa.Ke ngoko, ziya zithandwa ngakumbi ngabavelisi bezixhobo.
2. Ixabiso eliphantsi kunye nokusetyenziswa kwamandla aphantsi
Umthamo wezixhobo zonxibelelwano uya usiba mncinci kwaye uncinci, kwaye ingxinano yojongano equlethwe kwibhodi yojongano iya inyuka nangaphezulu, nto leyo efuna izixhobo ze-optoelectronic ziphuhlise kwicala leendleko eziphantsi kunye nokusetyenziswa kwamandla aphantsi.Okwangoku, izixhobo zokukhanya ngokubanzi zisebenzisa inkqubo yokudibanisa i-hybrid kunye nenkqubo yokupakisha eqinile.Uphuhliso olulandelayo luya kuba luphakheji olungenawo umoya, olufuna ukuthembela kwi-passive optical coupling (non-XYZ uhlengahlengiso lwe-directional) kunye nobunye ubuchwepheshe bokuphucula ngakumbi iqondo lokuzenzekelayo kunye nokunciphisa iindleko.
3. Izinga eliphezulu
Abantu bafuna ulwazi oluthe kratya kunye nesantya sothumelo lolwazi olukhawulezayo.Njengentsika ephambili yotshintshiselwano lolwazi lwangoku, ukusetyenzwa kunye nokuhanjiswa, inethiwekhi yonxibelelwano ye-optical iye yaphuhliswa ukuya kwi-ultra-high frequency, i-ultra-high speed kunye ne-ultra-large capacity.Okukhona liphezulu izinga losulelo kunye nomthamo, kokukhona lisezantsi ixabiso lokuhambisa ulwazi ngalunye.
4. Umgama omde
Inethiwekhi yanamhlanje yokukhanya iyanda kwaye ikude, efuna ii-transceivers ezikude ukuze zihambelane nayo.Isiginali ye-transceiver eqhelekileyo ekude inokuhambisa ubuncinci beekhilomitha ezili-100 ngaphandle kokukhulisa.Injongo yayo ephambili kukugcina i-amplifier optical ebiza kakhulu kunye nokunciphisa iindleko zonxibelelwano lwe-optical.Ngokusekelwe kuqwalaselo lomgama wothumelo, abaninzi abagqithisi bekude bakhetha ibhendi ye-1550 (uluhlu lwe-wavelength malunga ne-1530 ukuya kwi-1565 nm) njengeqela elisebenzayo, kuba ilahleko yokuhanjiswa kwe-wave ye-optical incinci kuloluhlu, kwaye i-amplifiers ebonakalayo iyasebenza zonke. kweli qela.
5. Ukutshintshana okushushu
Oko kukuthi, imodyuli inokudityaniswa okanye ikhutshwe kwisixhobo ngaphandle kokuqhawula unikezelo lwamandla.Ngenxa yokuba imodyuli ye-optical ishushu-swappable, umphathi wenethiwekhi unokuphucula kunye nokwandisa inkqubo ngaphandle kokuvala inethiwekhi, engayi kuba nefuthe kubasebenzisi be-intanethi.Iiplagi ezishushu zikwawenza lula umsebenzi wogcino jikelele kwaye zenza abasebenzisi bokugqibela balawule ngcono iimodyuli zabo zetransceiver.Ngexesha elifanayo, ngenxa yolu tshintshiselwano olushushu, le modyuli yenza ukuba abaphathi benethiwekhi benze isicwangciso esipheleleyo seendleko ze-transceiver, umgama wekhonkco kunye nazo zonke ii-topology zenethiwekhi ngokweemfuno zokuphucula inethiwekhi, ngaphandle kokutshintsha zonke iibhodi zenkqubo.
12. IiNgcebiso eziSisiseko zoTshintsho
I-LAN yesiko isebenzisa i-HUB, enebhasi enye kuphela, kwaye ibhasi enye yindawo yongquzulwano.Ke i-LAN yemveli yinethiwekhi ecaba, kwaye iLAN yeyommandla wongquzulwano ofanayo.Imiyalezo ethunyelwe nguye nawuphina umamkeli uya kwamkelwa ngabo bonke abanye oomatshini kwindawo yongquzulwano efanayo.Kamva, ibhulorho yenethiwekhi (i-2 switch switch) yayisetyenziselwa ukubuyisela i-hub (HUB) kwinethiwekhi.Ichweba ngalinye linokuthathwa njengebhasi ehlukeneyo, kwaye indawo yokungqubuzana iyancitshiswa kwi-port nganye, ephucula kakhulu ukusebenza kwenethiwekhi yokuthumela imiyalezo ye-unicast kwaye iphucula kakhulu ukusebenza komgca we-2 womnatha.Ukuba umamkeli uthumela umyalezo wosasazo, isixhobo sisenako ukufumana umyalezo wosasazo.Sidla ngokubiza uluhlu losasazo lomyalezo wosasazo njengesizinda sosasazo.Xa ibhulorho yenethiwekhi ihambisa umyalezo wosasazo, isafuna ukwenza iikopi ezininzi zomyalezo wosasazo kwaye uyithumele kuzo zonke iikona zenethiwekhi.Ngokwandiswa kwesikali sothungelwano, kukho imiyalezo esasazwayo ngakumbi kuthungelwano, kwaye imiyalezo yosasazo ithatha izibonelelo ezininzi zenethiwekhi, ezichaphazela kakhulu ukusebenza kwenethiwekhi.Oku kubizwa ngokuba yingxaki yesaqhwithi sosasazo.
Ngenxa yokunciphisa umgaqo wokusebenza kwebhulorho inethwekhi ezimbini, ibhulorho ayinakwenza nantoni na malunga nesaqhwithi sosasazo.Ukuze kuphuculwe ukusebenza kakuhle kwenethiwekhi, ngokuqhelekileyo kuyimfuneko ukwahlula inethiwekhi: ukwahlula i-domain enkulu yosasazo kwiindawo ezininzi zokusasaza ezincinci.
Ngaphambili, i-LAN yayihlala ihlulwe ngeerotha.I-router emfanekisweni ithatha indawo yokutshintsha kwe-node ephakathi kumfanekiso wangaphambili, onciphisa kakhulu ukuhanjiswa kwemiyalezo yokusasazwa.Esi sisombululo sisombulula ingxaki yesiphango sokusasaza, kodwa i-router isetyenziselwa ukwahlula inethiwekhi kumacandelo kwi-network layer.Isicwangciso sothungelwano sinzima, indlela yokunxibelelana ayinakuguquguquka, kwaye yandisa kakhulu ubunzima bolawulo nokugcinwa.Njengenye indlela yokwahlulahlula i-LAN, i-LAN ebonakalayo iye yaziswa kwizisombululo zenethiwekhi ukusombulula iingxaki ezijongene neendawo ezinkulu zothungelwano ezinomaleko amabini.
Inethiwekhi yeNdawo yeNgingqi yeNgingqi (VLAN) ngokusengqiqweni yahlula izibonelelo zothungelwano kunye nabasebenzisi bothungelwano ngokwemigaqo ethile, kwaye yahlula uthungelwano lokwenyani lokwenyani kuthungelwano oluncinane olunengqiqo.Ezi nethiwekhi zincinci zinengqiqo zenza imimandla yazo yosasazo, oko kukuthi, ii-LAN VLANs.Kulo mzobo, kusetyenziswe iswitshi esembindini, kodwa ekhohlo nasekunene zezohlukeneyo zeVLAN, zenza eyazo imimandla yosasazo.Imiyalezo yosasazo ayinakuthunyelwa kuyo yonke le mimandla yosasazo.
I-LAN ebonakalayo ngokusengqiqweni yahlula iqela labasebenzisi kumacandelo othungelwano olubonakalayo ahlukeneyo kwi-LAN, efana ngokusisiseko ne-LAN yemveli ekusebenzeni nasekusebenzeni, kwaye inokubonelela ngoqhagamshelo lweenkqubo zetheminali ngaphakathi koluhlu oluthile.
13. EPON ONU/GPON ONU Umahluko, ngoAprili 6, 2022
Imigangatho eyahlukeneyo (inkqubo yePON)
I-EPON: IEEE 802.3ah.Lo mgangatho udibanisa i-Ethernet kunye ne-PON iteknoloji.Itekhnoloji ye-PON isetyenziselwa ulwaleko lomzimba kunye neprotocol ye-Ethernet isetyenziswa kwi-data link layer ukufezekisa ukufikelela kwinethiwekhi ye-PON
I-GPON: umgangatho we-ITU-TG.984, ngokusekelwe kwi-convergence transmission (TC) layer, inokugqiba ukulungelelaniswa kweenkonzo eziphezulu zokwahluka.
Amaxabiso ahlukeneyo
I-EPON inikezela nge-uplink esisigxina kunye ne-downlink 1.25Gbps;I-EPON isekela umlinganiselo ophezulu we-shunt we-1: 64;
I-GPON isekela i-uplink kunye ne-downlink i-asymmetric rate, kunye ne-downlink 2.5Gbps okanye i-1.25G kunye ne-uplink 1.25Gbps;
I-GPON ixhasa ubuninzi be-1: 128 (ixabiso lethiyori);
Usetyenziso nophuhliso
I-EPON: ixabiso elincinci kunye nokugcinwa okulula, okukhethiweyo kuninzi lwabaqhubi kwinqanaba lokuqala
I-GPON: Imigangatho egqibeleleyo, inkxaso efanelekileyo yenkonzo edibeneyo kunye neemfuno eziphezulu zobuchwepheshe yindlela yokufikelela kwinethiwekhi ye-optical access
Inkqubo esemgangathweni ye-GPON ngokwenene "ivulekile", exutyushwa ngokudibeneyo kwaye iphuculwe yimibutho emine yemigangatho emikhulu (ITU-T SG15 Q2, FSAN, Broadband Forum, ATIS NIPP);
Umgangatho we-EPON waqalwa yi-IEEE kwaye waphuculwa ngabasebenzi kumazwe ahlukeneyo, "evaliweyo"
14. Intshayelelo esisiseko kwiMisebenzi yeSoftware yeeMveliso ze-ONU
Izitayile zojongano lwesoftware ye-ONU zahlulwe zaba ziindidi ezimbini:
(1)Ngena kwiphepha lewebhu
(2)Ukumisela iphepha lewebhu
ONU-Iqhosha:
Isitshixo: RST, WPS, WIFI
Indawo: icala okanye ngaphambili (uyilo lwehardware)
Umsebenzi: Seta kwakhona ukubuyisela useto lwasefektri, cofa kwaye ubambe i-5-10S, kwaye emva koko uyeke
I-WIFI yenza, vula okanye ucime umsebenzi we-WIFI
Izicwangciso zokukhusela iWPS WIFI: cofa iqhosha leWPS, kwaye isalathisi seWPS siya kukhanya.Ngeli xesha, umxhasi we-WIFI unokusebenzisa uqhagamshelo lweWPS ukugqiba uqhagamshelo lwenethiwekhi engenazingcingo ngokuqhelekileyo ngaphandle kokufaka igama lokugqitha le-SSID.
Iziqhagamshelo zefiber ezisetyenziswa ziimveliso zethu ze-ONU:
SC/UPC
➢ Umxhasi/uMgangatho
➢ Ukutyhala uhlobo, kulula ukuyilayisha kunye nokothula
➢ esona sidibanisi sixhaphakileyo.Ubunzima bokukhanya, ubungakanani obuncinci, kulula ukusebenza
➢ Izibuko le-PON le-OLT ne-ONU
SC/APC
➢ UQhagamshelwano loMzi olwe-engile
➢ Gaya kwaye upholise umphezulu we-microsphere kwi-engile ye-8 degrees
➢ Ilahleko yokubuyisela ≥ 60dB, edla ngokusetyenziswa kwinethiwekhi yentambo yeTV ukuhambisa isignali yeCATV
I-Loop-Khangela: Ukufunyanwa kwe-Port loop: Thumela imiyalezo ekhethekileyo kwiizibuko zesixhobo kwaye ukhangele ukuba imiyalezo ingathunyelwa ukusuka.Indawo ekuyiwa kuyo yamkelwa kwakhona ukumisela ukuba ngaba kukho i-loopback kwizibuko.Ukuba kukho i-alam ethunyelwe sisixhobo, vala izibuko.Emva kokuba i-loop isusiwe, vula kwakhona i-port kwaye uxele ukucocwa kwe-alamu.
Xa usebenzisa iimveliso ze-ONU, kuya kubandakanya indlela esilawula ngayo i-ONU:
Iindlela ezine zolawulo lwe-ONU
ULawulo lweWEBHU
Ulawulo lwe-CLI
Ulawulo lwe-OAM/OMCI
TR069/SNMP
15. ONU-OAM/OMCI
OAM
√ Ukusebenza, uLawulo noLondolozo
√ Umgangatho wamazwe ngamazwe IEEE 802.3 ah, umgangatho wasekhaya we-CTC 3.0
√ I-OAM yinkqubo yonxibelelwano phakathi kwe-ONU kunye ne-EPON OLT kwimo ye-EPON “inkqubo yokufumanisa” “ikhonkco lokulungisa” “umbuzo nokuseta” “i-alarm”
I-OMCI
√ IsiNxulumanisi soLawulo noLawulo lwe-ONT “I-ONT yoLawulo noLawulo lweNdibaniselwano”
√ Umgangatho wamazwe ngamazwe we-ITU-T G984.x ITU-T G988
√ I-OMCI yinkqubo yonxibelelwano phakathi kwe-ONU ne-GPON OLT kwimo ye-GPON
I-SNMP — IProtokholi yoLawulo lweNethiwekhi elula
Isetyenziselwa indawo yokusebenza yolawulo ukulawula ukude zonke izixhobo zenethiwekhi ezixhasa umthetho olandelwayo, kubandakanywa ukubuza ubume bothungelwano, ukulungisa ubumbeko bothungelwano, kunye nokufumana ulwazi lwesilumkiso sothungelwano lwesiganeko."Ulawulo loLungiselelo" "Ulawulo lweempazamo" "Ulawulo lokuSebenza" "Ulawulo loKhuseleko"
Imiba emibini engundoqo ye-SNMP yi-MIB (iSiseko soLawulo loLwazi) kunye ne-OID (Isichongi seNto)
Isiseko solwazi lolawulo lwe-MIB: sichaza ulwazi lolawulo olunokusetyenziswa kwisixhobo.I-arhente kunye nesikhululo solawulo sisebenzisa i-MIB njengedatha edibeneyo yonxibelelwano
I-OID yokuchonga into: into elawulwa yi-MIB (isazisi esisodwa)
Umzekelo, 1.3.6.1.2.1.1.0 Fumana ulwazi lwenkqubo olusisiseko (SysDesc)
16. I-Topology yeNethiwekhi
√ I-WiFi inokunxibelelana ngee-topology ezahlukeneyo zothungelwano, kwaye ukufunyanwa kwayo kunye nokufikelela kwinethiwekhi nayo ineemfuno zayo kunye namanyathelo.Inethiwekhi engenazingcingo ye-WiFi ibandakanya iindidi ezimbini ze-topology: izakhiwo kunye ne-ad-hoc.Iikhonsepthi ezimbini ezibalulekileyo ezisisiseko: isitishi (i-STA): eyona nxalenye isisiseko sothungelwano.Itheminali nganye eqhagamshelwe kwinethiwekhi engenazingcingo (ezifana nelaptop, iPDA kunye nezinye izixhobo zomsebenzisi ezinokuqhagamshelwa kwinethiwekhi) inokubizwa ngokuba sisikhululo.Indawo yokufikelela okungenazintambo (AP): umdali wenethiwekhi engenazintambo kunye ne-node ephakathi yenethiwekhi.Ngokubanzi, irutha engenazingcingo esetyenziswa ekhaya okanye eofisini yi-AP.Ijelo, isitshixo (njenge-WEP), iprotocol yenethiwekhi (efana ne-DHCP), i-bridging, njl.Abathengi yidesktop, incwadi yamanqaku, ikhompyuter ephathwayo kunye nezinye izixhobo zomsebenzisi.
√ Inethiwekhi engenazingcingo esisiseko esekwe kwi-AP
√ Iyilwe ngu-AP kwaye yenziwe ziiSTA ezininzi
√ I-AP liziko lothungelwano luphela
√ I-STA ayinakunxibelelana ngokuthe ngqo enye kwenye kwaye ifuna ukuthunyelwa yi-AP.Oku kulandelayo yi-topology yemveliso ye-GPON OLT/XPON OLT/OLT ONU/AC ONU/ifowuni ONU/WIFI ONU/CATV ONU yenkampani yethu:
17. OSI 7-Layer Network Architecture
√ Umaleko obonakalayo: 802.11b ichaza isantya sothumelo lwedatha ye-11Mbps esebenza kwi-2.4GHz ISM frequency band Umaleko womzimba usebenzisa i-frequency-hopping spread spectrum transmission technology (Frequency-hopping Spread Spectrum, FHSS) kunye ne-Direct Sequence Spread Spectrum,DSSS）
√ Umaleko we-MAC: Umaleko we-MAC ubonelela ngemisebenzi emininzi ukuxhasa ukusebenza kwenethiwekhi engenazingcingo.Ngokusebenzisa indawo yomaleko we-MAC Unokuseka inethiwekhi okanye ufikelele kuthungelwano olukhoyo kwaye udlulisele idatha kwi-LLC layer.
√ Umaleko we-LLC: IEEE802.11 isebenzisa umaleko ofanayo we-LLC kunye nedilesi ye-MAC ye-48-bit njengedilesi ye-IEEE802.2, eyenza ibhulorho phakathi kwamacingo kunye neentambo zibe lula kakhulu.Kodwa idilesi ye-MAC yodwa kuphela kwi-WLAN yokumisela.
√ Umaleko wothungelwano: Iprothokholi ye-IP yamkelwe, eyeyona ndlela yomthetho ibalulekileyo kwiZikhokelo ze-Intanethi ekufuneka ilandelwe xa kunxibelelwana.
√ Umaleko wezothutho: Iprothokholi yeTCP/UDP yamkelwe.I-TCP yi-protocol ejoliswe kwikhonkco kwaye inokubonelela nge-IPReliable transmission phantsi kokusingqongileyo;I-UDP yi-protocol engaxhunywanga enganikeli ukuthembeka kwe-IP
√ Ugqithiso.Kwizicelo ezithembeke kakhulu, umaleko wezothutho ngokubanzi wamkela iprotocol ye-TCP.Uluhlu lwesicelo: luphunyezwe ngokweemfuno zesicelo, ezifana ne-HTTP protocol, i-DNS (i-Domain name System, inkqubo yokusombulula igama lesizinda) protocol.Okwangoku, uHaidiwei ubonelela ikakhulu umaleko wothungelwano kunye nezixhobo zokuhambisa, ezinje: iswitshi yonke-optical, imodyuli ye-SFP optical, GPON OLT, GPON ONU series, njengoko kubonisiwe kulo mfanekiso ulandelayo:
18. ONU+STB Gateway Box, April 7, 2022
Okwangoku, njengesixhobo somsebenzisi we-terminal, i-ONU sisixhobo esahlukileyo esizimeleyo kwibhokisi yeTV yedijithali.Idityaniswe kwinkqubo yebhokisi yokumisela-phezulu ngokusebenzisa ujongano lomsebenzisi we-ONU kwinkqubo ye-EPON.Xa isizukulwana esilandelayo sothumelo lothungelwano luphuhlisa ukuya kwi-FTTH, indlu nganye idinga izixhobo ezimbini ze-terminal, ibhokisi enye yokumisela kunye ne-ONU enye, eya kuchitha indawo yomsebenzisi kunye nokwandisa umthwalo wokusetyenziswa komsebenzisi.Ngeli xesha, iteknoloji yemveliso ye-9602C ONU + STB ibe yinjongo yoshishino.Ngokudibanisa imisebenzi ye-ONU kwibhokisi ye-set-top, umsebenzi we-set-top box uya kuba namandla ngakumbi, isantya sokucubungula idatha siya kukhawuleza, kwaye ithemba lesicelo liya kuba libanzi.
Okwangoku, uphuhliso lwe-IPTV lujongene ikakhulu ne-bottleneck yobugcisa bendlela yokuqhawula umda we-broadband, kunye nokubaluleka kokwenyani kokungena kwe-telecommunications optical fiber ekhaya.I-10G-PON yokufikelela kwinethiwekhi ye-optical ayinakuvumela kuphela abasebenzisi ukuba baphulaphule kwaye babukele uchungechunge lweenkqubo ezivakalayo nezimangalisayo ze-audio-visual ezifana HD, UHD, 3D, kodwa zibonelela abasebenzisi ngeenkonzo ze-Intanethi ezinamandla ezifana nonyango lwe-intanethi, kwi-intanethi. ukufundisa, urhwebo lwe-intanethi, incoko yelizwi, unxibelelwano ngevidiyo, njl. njl., Inokudlala indima yokuba ngumgcini wendlu kwikhaya lomsebenzisi, ibonelela abasebenzisi ngokhuseleko olugqwesileyo lwasekhaya, i-Intanethi yeZinto zasekhaya kunye nezinye iinkonzo ezihlakaniphile zasekhaya.Ukuze kulungiswe ezi ngxaki zingasentla, i-Shenzhen Haidiwei Optoelectronic Technology Co., Ltd. icebise iprojekthi ye-R&D "9602C ONU + STB".Ngenxa yale njongo, inikezelwe kuphuculo lobugcisa, uphando lwenkxaso yobugcisa obuphezulu kunye nomthamo ophezulu, kunye nophando lwezixhobo zenethiwekhi ezitsha nezifanelekileyo ngokwenene kuninzi lwamaqela.
19. MINI Square ONU
Izixhobo zangoku ze-ONU zibandakanya i-chip ye-ONU, i-BOSA (i-Bi-direction Optical Subassembly) imodyuli ye-bidirectional optical transceiver, imodyuli yamandla, ibhodi yesiphaluka eprintiweyo kunye negobolondo yokukhusela;I-ONU chip, imodyuli ye-optical kunye nemodyuli yamandla zipakishwe kwibhodi yesekethe eprintiweyo;Esinye isiphelo se-BOSA saso sisidibaniso esine-pigtail, esisigxina kwibhodi yesekethe eprintiweyo kwaye isetyenziselwa ukudibanisa kunye ne-fiber optical connector kwi-terminal optical line OLT;Esinye isiphelo seBOSA sikwadityaniswa nebhodi yePCB;Esi sakhiwo sikhokelela kumthamo omkhulu wemveliso yonke ye-ONU, ithatha indawo kwaye akulula ukuyifaka, kwaye kunzima ukushiya i-tray fiber optical.Kuya kuhlala kukho icandelo le-fiber optical evezwe, esengozini kakhulu kuluhlu lweengxaki ezifana nokuphulwa kwefayibha kunye nokungaphumeleli kokuguqulwa komqondiso obangelwa amandla angaphandle.Ukuze kusonjululwe ezi ngxaki zingentla, i-"MINI ONU square" yophando kunye neprojekthi yophuhliso yabekwa phambili.Ngenxa yale njongo, uphuculo lobugcisa lwenziwa, inkxaso yobugcisa obuphezulu kunye nomthamo ophezulu waphononongwa, kwaye izixhobo zenethiwekhi ezitsha nezifanelekileyo ngokwenene zaphandwa.I-Shenzhen Haidiwei Optoelectronics inikezela ngeentlobo ezahlukeneyo ze-GPON ONU / WIFI ONU / ODM iinkonzo, ukubonelela ngenkonzo yokumisa enye kubathengi bolu hlobo lweshishini.
20. I-MINI Transceiver
I-transceiver ye-fiber optical yendabuko yiyunithi yokuguqula imidiya ye-Ethernet etshintshiselana umgama omfutshane ojijekileyo weempawu zombane kunye nemiqondiso ye-optical yomgama omde, eyandisa umgama wokudibanisa we-Ethernet kwaye iphule umda womgama weemitha ezili-100 usebenzisa isibini esijijekileyo.Ii-transceivers ze-fiber optical zisetyenziswa ngokubanzi kwindawo yenethiwekhi yangempela apho intambo ye-Ethernet ayikwazi ukugubungela kwaye i-fiber optical kufuneka isetyenziswe ukwandisa umgama wokuhambisa, kwaye ngokuqhelekileyo ibekwe kwi-access layer application ye-broadband network network network.Ngokubanzi, i-interface yombane ye-optical fiber transceiver kwimarike iqhagamshelwe ngokuthe ngqo ne-chip ephambili.Kwimeko yokutshintsha ngokukhawuleza kwe-voltage yegalelo okanye yangoku, izinga lokuhanjiswa kunye nomgangatho liya kuchaphazeleka, kwaye i-chip ephambili iya konakala ngokulula.Ukuze kusonjululwe ezi ngxaki zingasentla, iprojekthi ye-R&D ye-R&D "IC+175 MINI" icetywayo: ukuphucula itekhnoloji, ukufunda ngakumbi ubuchwephesha obuphezulu kunye nenkxaso yobugcisa obuphezulu, kunye nokufunda izixhobo zenethiwekhi ezitsha nezifanelekileyo kuninzi. yamaqela.Ngelo xesha, inkampani yethu idinga ukuba isebe lezemali limisele i-akhawunti ezimeleyo yophando kunye nophuhliso lweendleko zeprojekthi, kwaye iimali zixhomekeke kulawulo lwengxowa-mali ekhethekileyo.Isebe lobuchwephesha kufuneka liqinise ulawulo lweprojekthi, kwaye amanye amasebe enkampani aya kubonelela ngoncedo kunye nentsebenziswano ngokweemfuno zeqela leprojekthi ye-R&D ukuqinisekisa ukuphunyezwa kunye nokugqitywa kweprojekthi.I-Shenzhen Haidwiwei Optoelectronic Technology Co., Ltd. ibonelela nge-fiber optical switch kunye neenkonzo ze-ODM
21. I-POE enikwe amandla i-nano transceiver
Kwinkqubo yokufakela i-fiber ye-fiber ye-fiber yendabuko, izixhobo zokuguqula i-photoelectric kufuneka zifakwe, ngelixa izixhobo zokuguqula i-photoelectric ezikhoyo zisebenzisa imodi yokubonelela umbane omnye, oko kukuthi, ukufumana amandla okusebenza kwezinye izixhobo zombane ukugcina uzinzo.Nangona kunjalo, xa i-port yokufumana amandla yesixhobo sokuguqula i-photoelectric ihluleka, okanye i-party yonikezelo lwamandla ihluleka, izixhobo zokuguqula i-photoelectric aziyi kusebenza ngokuqhelekileyo, ngaloo ndlela zichaphazela kakhulu inkqubo yokusebenza.Ukuze kulungiswe ezi ngxaki zingasentla, iprojekthi ye-R&D ye-"IC + nano PD POE" icetywayo: ukuphucula itekhnoloji, ukufunda ngakumbi itekhnoloji ephezulu kunye nenkxaso yobugcisa obuphezulu, kunye nokufunda izixhobo zenethiwekhi ezitsha nezifanelekileyo. uninzi lwamaqela.Ngelo xesha, inkampani yethu idinga ukuba isebe lezemali limisele i-akhawunti ezimeleyo yophando kunye nophuhliso lweendleko zeprojekthi, kwaye iimali zixhomekeke kulawulo lwengxowa-mali ekhethekileyo.Isebe lobuchwephesha kufuneka liqinise ulawulo lweprojekthi, kwaye amanye amasebe enkampani aya kubonelela ngoncedo kunye nentsebenziswano ngokweemfuno zeqela leprojekthi ye-R&D ukuqinisekisa ukuphunyezwa kunye nokugqitywa kweprojekthi.
22. I-Optical Network Unit ONU
I-OLT: i-terminal ye-optical line, elawula izixhobo ezininzi ze-terminal (ONUs).Ikwasisixhobo ekungeneni kwenethiwekhi yangaphandle kunye nokungena kwenethiwekhi yangaphakathi.Indima: ukubonelela ngecala lenethiwekhi yojongano lwenethiwekhi yokufikelela kwi-optical kwaye unxibelelane ne-ONU kwicala lomsebenzisi nge-ODN enye okanye ngaphezulu.Ubudlelwane phakathi kwe-OLT kunye ne-ONU lunxibelelwano lwe-master-slave.I-ODN: inethiwekhi yokuhanjiswa kwe-optical, eyaziwa ngokuba yi-optical splitter.Umqondiso wendlela ye-optical yomgca we-trunk usasazwa kwizixhobo kwii-terminals ezininzi (ONUs).Indima: Ibonelela ngeendlela zokuhanjiswa kwe-optical phakathi kwe-OLT kunye ne-ONU.Umsebenzi wayo oyintloko kukugqiba isabelo samandla ophawu lwe-optical.I-ODN yinethiwekhi yosasazo ye-optical passive eyenziwe ngamacandelo optical optical (afana nefiber optical kunye nentambo, i-optical connector kunye ne-optical splitter).I-ONU: iyunithi yenethiwekhi yamehlo;Ngokuqhelekileyo, inokuqondwa njenge-router yasekhaya okanye utshintshe.Umahluko omkhulu phakathi kwezixhobo ezisetyenziswa kuthungelwano olujijekileyo oluqhelekileyo kukuba kukho i-port ye-optical network port.Umsebenzi: Ibonelela nge-remote interface yomsebenzisi-icala lenethiwekhi yokufikelela kwi-optical, ebekwe kwicala lomsebenzisi we-ODN.I-OAN yinethiwekhi yokufikelela isebenzisa iteknoloji ye-fiber optical transmission, oko kukuthi, inkqubo yonxibelelwano phakathi kweofisi yokutshintsha kwendawo kunye nabasebenzisi abasebenzisa ukuhanjiswa kwe-fiber optical ngokupheleleyo okanye inxalenye.Inethiwekhi yokufikelela kwi-Optical inokwahlulwa ibe yi-passive optical network (PON) kunye ne-active optical network (AON).Xa kuthelekiswa nezi ntlobo zimbini zothungelwano lwe-optical network, uphuhliso lwe-passive optical network luya kukhawuleza ngokweendleko.Ngokwendawo ethile ye-ONU kwinethiwekhi yokufikelela kwi-optical access, i-OAN inokwahlulwa ibe ziintlobo ezininzi ezahlukeneyo zesicelo: 1) I-fiber ye-Optical kwibhokisi ye-junction (FTTCab) 2) I-fiber ye-Optical ecaleni kwendlela (FTTCub) 3) I-fiber ye-Optical kwisakhiwo ( I-FTTB) 4) I-fiber ye-Optical ukuya ekhaya (FTTH) kunye ne-fiber optical kwi-ofisi (FTTO) iteknoloji ye-PON: I-PON yi-fiber enye yeendlela ezimbini zokufikelela kwinethiwekhi kunye ne-point-to-multipoint (P2MP) isakhiwo, kunye ne-topology yayo eqhelekileyo. uhlobo lomthi
23. Indlela yokwahlula inethiwekhi yokufikelela kwi-OLT kunye ne-ONU
Yintoni i-OLT?
Igama elipheleleyo le-OLT yi-Optical Line Terminal.I-OLT yitheminali yomgca we-optical, eyi-ofisi yokuphela kwezixhobo zonxibelelwano.Isetyenziselwa ukudibanisa imigca ye-optical fiber trunk.Isebenza njengetshintshi okanye i-router kwinethiwekhi yonxibelelwano yendabuko, kwaye sisixhobo ekungeneni kwenethiwekhi yangaphandle kunye nokungena kwenethiwekhi yangaphakathi.Ekupheleni kweofisi, eyona misebenzi ibalulekileyo yokwenziwa kukucwangciswa kwetrafikhi, ulawulo lwe-buffer, kunye ne-interface ejolise kumsebenzisi ye-passive optical network interface kunye nokwabiwa kwe-bandwidth.Ngamagama alula, kukuqonda imisebenzi emibini: ukufikelela phezulu kwinethiwekhi yePON;Kwi-downstream, idatha efunyenweyo iya kuthunyelwa kwaye isasazwe kuzo zonke izixhobo ze-terminal ye-ONU ngokusebenzisa inethiwekhi ye-ODN.
Yintoni i-ONU?
I-ONU yiyunithi yomsebenzi womnatha obonakalayo.I-ONU inemisebenzi emibini: ukufumana ngokukhethiweyo usasazo oluthunyelwe yi-OLT, kunye nokufumana kunye nokuphendula kwi-OLT ukuba ifuna ukufumana idatha;Ukuqokelela kunye ne-cache idatha ye-Ethernet ekufuneka abasebenzisi bayithumele, kwaye uthumele idatha egciniweyo kwi-terminal ye-OLT ngokwefestile yokuthumela eyabelwe.
Kwinethiwekhi ye-FTTx (cofa apha ukuze ufunde ngokukhawuleza malunga neFTTx), iindlela ezahlukeneyo zokusasazwa zofikelelo lwe-ONU nazo zahlukile, umzekelo, i-FTTC (iFiber ukuya kwiCurb): I-ONU ibekwe kwigumbi lekhompyutha eliphakathi kwiseli;I-FTTB (IFayibha ukuya kwiSakhiwo): I-ONU ibekwe kwibhokisi yokuhlangana yepaseji;I-FTTH (IFayibha ukuya eKhaya): I-ONU ibekwe kumsebenzisi wasekhaya.
24. Malunga nendlela yokusebenzisa iiModyuli zeGigabit Optical kunye noTshintsho
Indlela yokudibanisa iimodyuli ze-optical kunye nokutshintsha bekusoloko kungumba oshushu kwishishini.Umdlalo phakathi kokutshintsha kunye neemodyuli ze-optical azigcini nje ukugqiba ukuba zingasetyenziswa ngokuqhelekileyo emva koxhumo, kodwa zichaphazela nokuba inkqubo yenethiwekhi inokuphuculwa ngexabiso eliphantsi kunye nokusebenza okuphezulu kwinqanaba elilandelayo.Ngoko ke, i-HDV iya kugxila kwindlela yokusebenzisa iimodyuli ze-gigabit optical kunye nokutshintsha.Kutshintshiselwano, izibuko lesakhelo sokutshintsha kwesakhelo siyakwazi ukuxhasa ukusetyenziswa kwemodyuli yegigabit yegigabit ye-10-gigabit optical port, kunye nokusetyenziswa kwe-100-gigabit imodyuli yombono wojongano lwegigabit, oko kukuthi, isantya ezantsi. .Nangona kunjalo, i-uplink optical port yebhokisi yokutshintsha ayixhasi ukuncitshiswa kwesantya esingentla, kwaye i-downlink optical port inokuxhasa ukuncipha kwesantya esingentla phantsi kweemeko eziqhelekileyo.Nangona kunjalo, ngokuqhelekileyo akukhuthazwa ukunciphisa isantya sezibuko lokukhanya.Ke ngoko, imodyuli yegigabit optical kunye negigabit switch lolona khetho lungcono.
Imodyuli ye-gigabit optical isekelwe kwiimeko ezahlukeneyo zesicelo: unxibelelwano lwedatha, izinto ezisetyenziswayo kwigumbi lekhompyutha, iziko ledatha, ukubeka iliso lokhuseleko, kunye nolawulo lwamashishini.
25. Izixhobo zethu zeOLT
I-OLT yitheminali yomgca wokukhanya.Yinkqubo yolawulo lwenethiwekhi ye-OLT esekelwe kwi-CLI, i-WEB kunye ne-NMS, esetyenziselwa ukudibanisa izixhobo ze-terminal ze-trunk fiber optical.Ngokusekelwe kwinkqubo yethiyori yenkqubo ye-EPON, i-OLT iyayiqonda umgaqo wayo wokusebenza, ihlalutya iimfuno zoshishino ze-terminal optical line, iyahlula iimodyuli eziphambili zokusebenza, kwaye ixoxa ngemisebenzi yecandelo ngalinye le-EPON inkqubo.Iinzuzo ze-OLT zincinci, izixhobo ezilula, iindleko eziphantsi zofakelo kunye nokugcinwa, kunye notyalo-mali oluncinci.Isixhobo se-Passive optical siguquguqukayo kwinethiwekhi, kwaye i-topology yayo inokuxhasa umthi, inkwenkwezi, ibhasi, i-hybrid, i-redundant kunye nezinye ii-topology zenethiwekhi.Kulula ukuyifaka, ineentlobo zangaphakathi nangaphandle.Ubume bayo bangaphandle bunokuxhonywa ngokuthe ngqo eludongeni okanye lubekwe kwisibonda "H", ngaphandle kokurenta okanye ukwakha igumbi lomatshini.Nangona kunjalo, inkqubo esebenzayo idinga ukuguqulwa kwe-photoelectric kunye ne-electro-optical, kwaye iindleko zokuvelisa izixhobo ziphezulu.Kufuneka kusetyenziswe iziza ezikhethekileyo kunye namagumbi oomatshini.Ingxaki yokunikezelwa kwamandla okude kunzima ukuyicombulula, kwaye umsebenzi wokugcinwa kwemihla ngemihla mkhulu.Inethiwekhi ye-passive optical ifanelekile kunxibelelwano lwe-point-to-multipoint.Kuphela i-passive ye-optical splitter isetyenziselwa ukuqonda ukuhanjiswa kwamandla okukhanya.Inethiwekhi ye-Passive optical yinethiwekhi ecocekileyo ephakathi, ekuthintela ngokupheleleyo ukuphazamiseka kwe-electromagnetic kunye nefuthe lombane, kwaye ifaneleke kakhulu ukuba isetyenziswe kwiindawo ezineemeko zendalo ezimbi.Ukusuka kumbono wophuhliso lwetekhnoloji, ukwandiswa kwenethiwekhi ye-passive optical kulula, kwaye ayibandakanyi ukuguqulwa kwezixhobo.Kufuneka uphuculo lwezixhobo zokusebenza kuphela.Izixhobo ze-Hardware zithengwa kanye kwaye zisetyenziswe ixesha elide, elibeka isiseko se-fiber optical ukungena ekhaya kwaye iqinisekisa utyalo-mali lwabasebenzisi.
