Niba utazi itandukaniro riri hagati ya EPON Vs GPON biroroshye kwitiranya mugihe ugura. Binyuze muriyi ngingo reka twige EPON niki, GPON niki, niyihe Kugura?
EPON ni iki?
Umuyoboro wa Ethernet passique optique nuburyo bwuzuye bwamagambo ahinnye ya EPON. EPON nuburyo bwo guhuza mudasobwa mumiyoboro itandukanye y'itumanaho. Bitandukanye na EPON, GPON ikora kuri selile ATM. EPON na GPON biratandukanye murubu buryo. Ishyirwa mu bikorwa rya Packet Yongerewe hejuru Yumuyoboro Mugari (EPON) muri Fibre kugeza ahabigenewe na Fibre kuri sisitemu yo murugo. EPON ituma impera nyinshi zishobora kuvugana hejuru ya fibre optique. EPON yohereza amakuru, amajwi, na videwo kuri interineti ikoresheje paki ya Ethernet. Ntampinduka yinyongera cyangwa encapsulation isabwa kugirango EPON ihuze kuko isubira inyuma-ihuza nibindi bipimo bya Ethernet. Ntabwo bigoye kugera kuri 1 Gbps cyangwa 10 Gbps. Kubishyira mu bundi buryo, ntabwo bihenze kuruta GPON.
GPON ni iki?
Gigabit Ethernet Passive Optical Network nizina ryuzuye kumagambo ahinnye ya GPON.
Ku itumanaho ryijwi, Gigabit Ethernet Passive Optical Network ikoresha protocole ya ATM, mugihe amakuru yimodoka atwarwa na Ethernet. Byihuta kumanuka no kumuvuduko wo hejuru uraboneka hamwe na GPON ugereranije na EPON. Umuyoboro mugari wa pasiporo optique, cyangwa GPON, ni uburyo bwo kugera. GPON ikoreshwa mumiyoboro ya FTTH. Nkigisubizo cyumuvuduko mwinshi, amahitamo ya serivise yoroheje, hamwe no kugera kwinshi, GPON igenda ihinduka ikorana buhanga ryo guhitamo. Tekinike ifatwa nkibipimo bya zahabu yo kwagura imiyoboro yagutse. Muri ubwo buryo, 2.5 Gbps irashobora kugerwaho haba hejuru no hepfo. Birashoboka kugera kuri 2.5Gbps kumanuka na 1.25Gbps kumuvuduko wo hejuru.
EPON Vs GPON niyihe Kugura?
1) Ibipimo bitandukanye byemejwe na GPON na EPON. GPON ni tekinoroji yateye imbere kuruta EPON kandi ifite ubushobozi bwo gushyigikira abakoresha benshi no gutwara amakuru. Imiterere ya ATM ikadiri, yakomotse kumurongo wambere wa tekinoroji ya APONBPON optique ya fibre itumanaho, ikoreshwa numuyoboro woherejwe muri GPON. Inzira ya kode ya EPON nuburyo bwa Ethernet ikadiri, naho E ya EPON igereranya Ethernet ihujwe kuko byabanje kuba ngombwa ko EPON ibasha guhuza neza na enterineti. Kugirango habeho ihererekanyabubasha hejuru ya fibre optique, imiterere yikadiri ya EPON isanzwe irimo hanze yikadiri yimiterere ya Ethernet.
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IEEE 802.3ah isanzwe igenga EPON. Iki nigitekerezo cyibanze inyuma ya IEEE ya EPON: kugena EPON nkuko bisanzwe mubikorwa byububiko bwa 802.3 utarinze kwagura protocole ya MAC ya Ethernet isanzwe nkibishoboka.
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GPON isobanurwa muri ITU-TG.984 y'uruhererekane rw'ibipimo. Kugirango ukomeze 8K igihe gikomeza, ubwihindurize bwa GPON bugereranya guhuza inyuma na serivisi za TDM zisanzwe kandi ikomeza imiterere ya 125ms. Mu ntumbero yo gushyigikira protocole nyinshi, harimo ATM, GPON itanga imiterere yububiko bushya. GEM: GPONEncapsulaTIonMethod. ATM amakuru ashobora guhuzwa namakuru yaturutse muri protocole dukesha gushiraho.
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4) Mubyukuri-byukuri, GPON itanga umurongo mugari kuruta EPON. Umutware wa serivisi arakora neza, kandi imbaraga zo kugabana zirakomeye. Ibikorwa byinshi bihanitse bikozwe neza nubushobozi bwayo bwo kohereza serivise nyinshi, kwongera abakoresha, no kuzirikana serivisi nyinshi hamwe na QoS garanti. Ni ukubera ko GPON igura amafaranga arenze EPON, mugihe itandukaniro riri hagati yombi rigabanuka biturutse kumikoreshereze ya tekinoroji ya GPON.
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Muri rusange, GPON irusha EPON mubipimo byimikorere, ariko EPON irakora neza kandi ihendutse. Birashoboka ko mugihe kizaza cyisoko ryagutse ryisoko ryagutse, kubana no kuzuzanya bishobora kuba ingenzi kuruta guhitamo uzasimbura nde. GPON ikwiranye neza nabakiriya bafite umurongo mugari, serivise nyinshi, numutekano ukeneye kandi bakoresha ikoranabuhanga rya ATM kumurongo wumugongo. Mu gice cyisoko kigizwe nabakiriya bashishikajwe cyane cyane nigiciro kandi ugereranije n’umutekano muke, kuri bo EPON yagaragaye nkimbere. Mugihe rero ugura ukurikije ibyo umukiriya akeneye arashobora guhitamo uwo kugura.