Yog tias koj tsis paub txog qhov sib txawv ntawm EPON Vs GPON nws yooj yim los ua tsis meej pem thaum yuav khoom. Los ntawm tsab xov xwm no cia peb kawm seb EPON yog dab tsi, GPON yog dab tsi, thiab qhov twg yuav Yuav?
EPON yog dab tsi?
Ethernet passive optical network yog tag nrho daim ntawv ntawm EPON acronym. EPON yog ib txoj hauv kev los txuas cov khoos phis tawj hla ntau lub xov tooj sib txuas lus. Sib txawv ntawm EPON, GPON ua haujlwm ntawm lub tshuab ATM. EPON thiab GPON yog qhov sib txawv ntawm txoj kev no. Kev siv cov pob ntawv Txhim Kho Tshaj Narrow Bandwidth Networks (EPON) hauv Fiber mus rau qhov chaw thiab Fiber rau hauv tsev. EPON ua rau ntau qhov kawg ntawm kev sib txuas lus hla ib qho kev kho qhov muag fiber ntau. EPON xa cov ntaub ntawv, suab, thiab yees duab hauv Is Taws Nem ntawm Ethernet pob ntawv. Tsis muaj kev hloov dua siab tshiab lossis encapsulation yog xav tau rau kev sib txuas EPON vim nws rov qab-tshaj nrog lwm cov qauv Ethernet. Nws tsis nyuaj kom tau mus rau 1 Gbps lossis 10 Gbps. Txhawm rau muab lwm txoj hauv kev, nws tsis tshua kim dua GPON.
GPON yog dab tsi?
Gigabit Ethernet Passive Optical Network yog lub npe tag nrho rau lub npe GPON.
Rau kev sib txuas lus hauv lub suab, Gigabit Ethernet Passive Optical Network ua rau siv ATM raws tu qauv, thaum cov ntaub ntawv khiav hla Ethernet. Kev nrawm dua qis qis thiab qis qis yog muaj nrog GPON piv rau EPON. Broadband passive optical network, lossis GPON, yog tus qauv nkag. GPON yog siv hauv FTTH networks. Raws li qhov tshwm sim ntawm nws cov bandwidth siab, hloov tau cov kev pabcuam, thiab kev ncav cuag, GPON tau nce zuj zus los ua lub network technology xaiv. Cov txheej txheem yog suav tias yog tus qauv kub rau kev nthuav dav ntawm kev sib txuas ntawm broadband. Ib yam li ntawd, 2.5 Gbps tuaj yeem ua tiav ob qho tib si ntws thiab qis. Nws yog qhov ua tau kom ua tiav 2.5Gbps nqes nqes thiab 1.25Gbps upstream speeds.
EPON Vs GPON qhov twg yuav?
1) Cov qauv sib txawv tau txais los ntawm GPON thiab EPON. GPON yog cov cuab yeej siv siab tshaj EPON thiab muaj peev xwm txhawb nqa ntau tus neeg siv thiab thauj cov ntaub ntawv. ATM thav duab hom, uas tau muab los ntawm tus thawj APONBPON optical fiber kev sib txuas lus technology, yog siv los ntawm kis tau tus mob code kwj hauv GPON. EPON code kwj yog Ethernet thav duab hom, thiab EPON's E stands rau kev sib txuas Ethernet vim nws yog thawj zaug tseem ceeb heev rau EPON kom muaj peev xwm ncaj qha cuam tshuam nrog Is Taws Nem. Txhawm rau kom haum rau kev sib kis ntawm cov khoom siv kho qhov muag, ib qho qauv rau EPON yog ib txwm muaj nyob sab nraum tus ncej ntawm Ethernet thav duab hom.
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IEEE 802.3ah tus qauv tswj hwm EPON. Qhov no yog lub tswv yim tseem ceeb tom qab IEEE's EPON tus qauv: kom tus qauv EPON ntau npaum li qhov ua tau zoo hauv 802.3 architecture yam tsis tau txuas ntxiv MAC raws tu qauv ntawm Ethernet tsawg li sai tau.
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GPON tau piav qhia hauv ITU-TG.984 series ntawm cov qauv. Txhawm rau kom tswj tau 8K lub sijhawm txuas ntxiv, GPON tus qauv kev hloov pauv hloov pauv rau kev rov qab sib raug zoo nrog cov kev pabcuam TDM uas twb muaj lawm thiab tswj hwm 125ms thav duab qauv. Rau lub hom phiaj ntawm kev txhawb nqa ntau txoj cai, suav nrog ATM, GPON muab cov ntawv tshiab pob. GEM: GPONEncapsulaTionMethod. Cov ntaub ntawv ATM tuaj yeem ua ke nrog cov ntaub ntawv los ntawm lwm cov txheej txheem ua tsaug rau kev tsim.
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4) Hauv qhov xwm txheej tiag tiag, GPON muab kev pabcuam bandwidth ntau dua li EPON. Nws cov kev pabcuam pabcuam tau zoo dua, thiab nws lub zog sib cais muaj zog dua. Cov kev ua ub no ntau dua yog ua tau los ntawm nws lub peev xwm los hloov cov kev pabcuam bandwidth ntau dua, nce cov neeg siv nkag, thiab suav nrog ntau qhov kev pabcuam thiab QoS lav. Qhov no yog vim tias GPON tus nqi ntau dua EPON, thaum qhov sib txawv ntawm ob qhov yog nqaim vim qhov kev siv dav dav ntawm GPON thev naus laus zis.
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Zuag qhia tag nrho, GPON outperforms EPON nyob rau hauv cov nqe lus ntawm kev ntsuas kev ua tau zoo, tab sis EPON yog ntau npaum thiab pheej yig. Nws yog qhov ua tau tias yav tom ntej ntawm kev lag luam kev lag luam broadband, kev sib koom ua ke thiab kev sib koom ua ke yuav yog qhov tseem ceeb tshaj qhov kev txiav txim siab uas yuav hloov leej twg. GPON yog qhov zoo dua rau cov neeg siv khoom uas xav tau bandwidth, ntau qhov kev pabcuam, thiab kev xav tau kev nyab xeeb thiab cov neeg siv tshuab ATM rau lawv cov caj qaum network. Hauv kev ua lag luam ntu suav nrog cov neeg siv khoom uas feem ntau txhawj xeeb txog tus nqi thiab muaj kev sib piv qee qhov kev txhawj xeeb txog kev nyab xeeb, rau lawv EPON tau tshwm sim los ua qhov pom tseeb hauv ntej. Yog li thaum kev yuav khoom raws li qhov xav tau ntawm cov neeg siv khoom tuaj yeem txiav txim siab seb yuav yuav qhov twg.