Kana usiri kuziva nezve musiyano uripo pakati peEPON Vs GPON zviri nyore kuvhiringika paunenge uchitenga.Kuburikidza nechinyorwa ichi ngatidzidzei kuti EPON chii, chii chinonzi GPON, uye ndeipi yekutenga?
Chii chinonzi EPON?
Ethernet passive optical network ndiyo izere fomu yeacronym EPON.EPON inzira yekubatanidza makomputa pamanetiweki akasiyana enharembozha.Yakasiyana neEPON, GPON inoshanda pamasero eATM.EPON neGPON zvinosiyaniswa nenzira iyi.Kuitwa kweEnhanced Packet Pamusoro Narrow Bandwidth Networks (EPON) muFiber kune Zvivakwa uye Fiber kune iyo Kumba masisitimu.EPON inogonesa magumo akawanda kutaurirana pamusoro peimwe optical fiber.EPON inotumira data, odhiyo, uye vhidhiyo paInternet kuburikidza nemapaketi eEthernet.Hapana imwe shanduko kana encapsulation inodiwa pakubatanidza EPON nekuti iri kumashure-inoenderana nemamwe maEthernet standard.Hazvina kuoma kusvika ku1 Gbps kana 10 Gbps.Kutaura neimwe nzira, inodhura zvishoma pane GPON.
Chii chinonzi GPON?
Gigabit Ethernet Passive Optical Network ndiro zita rizere rechifukidziro cheGPON.
Pakutaurirana nenzwi, iyo Gigabit Ethernet Passive Optical Network inoshandisa iyo ATM protocol, nepo data traffic inotakurwa pamusoro peEthernet.Inokurumidza kudzika nekudzika nekukwidza inowanika neGPON zvichienzaniswa neEPON.Broadband passive optical network, kana GPON, chiyero chekuwana.GPON inoshandiswa muFTTH network.Nekuda kweiyo yakakwirira bandwidth, inochinjika sevhisi sarudzo, uye yakakura kusvika, GPON iri kuwedzera kuve iyo network tekinoroji yesarudzo.Iyo tekinoroji inoonekwa seye goridhe chiyero chekuwedzera kusvika kune Broadband network.Saizvozvo, 2.5 Gbps inogona kuwanikwa kumusoro nekudzika.Zvinogoneka kuwana 2.5Gbps pasi perwizi uye 1.25Gbps kumusoro kwekumhanya.
EPON Vs GPON Ndeipi yeKutenga?
1) Mitemo yakasiyana yakagamuchirwa neGPON neEPON.GPON tekinoroji yepamusoro kupfuura EPON uye inokwanisa kutsigira vashandisi vakawanda uye kutakura data.Iyo ATM furemu fomati, iyo yakatorwa kubva kune yekutanga APONBPON optical fiber yekutaurirana tekinoroji, inoshandiswa neiyo transmission code stream muGPON.Iyo EPON code stream ndeye Ethernet frame format, uye EPON's E inomirira iyo yakabatana Ethernet nekuti pakutanga zvaikosha kuti EPON ikwanise kudyidzana neInternet.Kugonesa kutapurirana pamusoro peoptical fiber, furemu fomati yeEPON inogara iri kunze kweiyo Ethernet furemu fomati.
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Iyo IEEE 802.3ah chiyero inotonga EPON.Iri ndiro pfungwa huru kuseri kweIEEE's EPON mwero: kumisa EPON zvakanyanya sezvinobvira mukati meiyo 802.3 architecture pasina kuwedzera MAC protocol yenguva dzose Ethernet zvishoma sezvinobvira.
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GPON inotsanangurwa muITU-TG.984 yakatevedzana yemazinga.Kuti uchengetedze kuenderera kwe8K nguva, iyo GPON yakajairwa yekushanduka inoverengera kumashure kuenderana nemasevhisi eTDM aripo uye inochengetedza 125ms yakagadziriswa furemu chimiro.Nechinangwa chekutsigira akawanda maprotocol, anosanganisira ATM, GPON inopa inoveli pasuru fomati.GEM:GPONEncapsulaTIonMethod.ATM data inogona kusanganiswa nedata kubva kune mamwe maprotocol nekuda kwekugadzira.
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4) Muzviitiko zvepasirese, GPON inopa anobatsira bandwidth kupfuura EPON.Mutakuri wayo webasa unoshanda zvakanyanya, uye masimba ayo ekuparadzanisa akasimba.Mamwe mabasa akaomarara anoitwa kuti agoneke nekugona kwayo kutamisa mamwe bandwidth masevhisi, kuwedzera mukana wevashandisi, uye funga nezve akawanda-sevhisi uye QoS vimbiso.Izvi zvinodaro nekuti GPON inodhura kupfuura EPON, ukuwo musiyano pakati pezviviri izvi uri kuita mudiki nekuda kwekushandiswa kwakapararira kwehunyanzvi hweGPON.
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Pakazere, GPON inokunda EPON maererano nemaitiro ekuita, asi EPON inoshanda zvakanyanya uye inotengeka.Zvinogoneka kuti mune ramangwana remusika weBroadband access, kugarisana uye kuwirirana kungave kwakakosha pane kusarudza kuti ndiani achatsiva ndiani.GPON inokodzera zvirinani kune vatengi vanoda bandwidth, akawanda-sevhisi, uye chengetedzo zvinodiwa uye vanoshandisa ATM tekinoroji kunetiweki yemusana wavo.Muchikamu chemusika chinoumbwa nevatengi vanonyanya kunetseka nemutengo uye vane zvishoma zvichemo zvekuchengetedza, kwavari EPON yakabuda semutungamiri akajeka.Saka uchitenga zvichienderana nezvinodiwa nemutengi unogona kusarudza kuti ndeupi wekutenga.