EPON VS GPON: Dziwani Kusiyanasiyana

M'munda wa ma network a Broadband, matekinoloje awiri odziwika adakhala opikisana nawo pakupereka mautumiki othamanga kwambiri pa intaneti: EPON ndi GPON. Ngakhale onsewa ali ndi magwiridwe antchito ofanana, ali ndi kusiyana kosiyana komwe kuli koyenera kuwunika kuti mumvetsetse zomwe angathe ndikusankha yomwe ikugwirizana ndi zosowa zanu.

EPON (Ethernet Passive Optical Network) ndi GPON (Gigabit Passive Optical Network), njira zonse zodziwika bwino zogawira ma intaneti othamanga kwambiri kwa ogwiritsa ntchito pogwiritsa ntchito ukadaulo wa fiber optic. Iwo ali mbali ya Passive Optical Network (PON) banja la matekinoloje; komabe, amasiyana m'mamangidwe ndi machitidwe.

Kusiyana kwakukulu pakati pa EPON ndi GPON ndi gawo lawo la media access control (MAC). EPON imagwiritsa ntchito Efaneti, ukadaulo womwewo womwe umagwiritsidwa ntchito mumanetiweki amderali (LAN) ndi ma netiweki aakulu (WAN). Pogwiritsa ntchito Ethernet, EPON imapereka kuyanjana ndi machitidwe omwe alipo a Ethernet, ndikupangitsa kuti ikhale yosinthika kwambiri kwa ogwiritsa ntchito maukonde.GPON, Komano, amagwiritsa ntchito ukadaulo wa Asynchronous Transfer Mode (ATM), njira yakale koma yomwe imagwiritsidwabe ntchito potumiza deta. Ubwino wogwiritsa ntchito ATM mu netiweki ya GPON ndikuti imatha kupereka ntchito zosewerera katatu (mawu, kanema ndi data) papulatifomu yogawa ma multiplexing, motero kuwonetsetsa kugwiritsidwa ntchito moyenera kwa bandwidth.

Kusiyana kwina kwakukulu ndi kuthamanga kwa kutsika ndi kumtunda kwa mtsinje. EPON nthawi zambiri imakhala ndi liwiro lofananira, kutanthauza kuti kutsitsa ndi kutsitsa kumafanana. Mosiyana ndi izi, GPON imagwiritsa ntchito khwekhwe la asymmetric lomwe limalola kuthamanga kwambiri kumunsi ndi kutsika kwamtunda. Izi zimapangitsa GPON kukhala yabwino kwa mapulogalamu omwe amafunikira kutsitsa mwachangu, monga kutsitsa makanema komanso kusamutsa mafayilo akulu. Mosiyana ndi izi, EPON's symmetrical speeds imapangitsa kuti ikhale yoyenera kwa mapulogalamu omwe amadalira kwambiri kutumiza kwa data symmetrical, monga mavidiyo ndi misonkhano yamtambo.

Ngakhale onse a EPON ndi GPON amathandizira zida za fiber zomwezo, matekinoloje awo a OLT (Optical Line Terminal) ndi ONT (Optical Network Terminal) ndi osiyana. GPON imatha kuthandizira ma ONT ochulukirapo pa OLT iliyonse, ndikupangitsa kukhala chisankho choyamba ngati scalability ndi nkhawa. EPON, kumbali ina, ili ndi nthawi yayitali, yomwe imalola ogwiritsa ntchito ma netiweki kuti awonjezere kulumikizana kuchokera ku ofesi yapakati kapena malo ogawa. Izi zimapangitsa EPON kukhala yothandiza pofotokoza madera akuluakulu.

Malinga ndi mtengo, EPON ndi GPON zimasiyana malinga ndi ndalama zoyambira. Chifukwa cha kamangidwe kake ka ATM, GPON imafuna zida zovuta komanso zodula. Mosiyana ndi zimenezi, EPON imagwiritsa ntchito ukadaulo wa Efaneti, womwe umatengera anthu ambiri komanso otsika mtengo. Komabe, ndikofunikira kudziwa kuti ukadaulo ukakhala bwino komanso ogulitsa ambiri akulowa pamsika, kusiyana kwamitengo pakati pa zosankha ziwirizi kukucheperachepera.

Mwachidule, onse a EPON ndi GPON ndi njira zodalirika zoperekera intaneti yothamanga kwambiri. Kugwirizana kwa EPON ndi Efaneti komanso kuthamanga kofananira kumapangitsa kuti ikhale yokongola kwa mabizinesi ndi nyumba zogona zomwe zimafuna kufalitsa deta moyenera. Kumbali inayi, kugwiritsa ntchito kwa GPON kwa ATM ndi kuthamanga kwa asymmetric kumapangitsa kuti ikhale chisankho choyamba pamapulogalamu omwe amafunikira kutsitsa mwachangu. Kumvetsetsa kusiyana pakati pa EPON ndi GPON kudzathandiza ogwiritsira ntchito maukonde ndi ogwiritsa ntchito mapeto kupanga zisankho zomveka posankha teknoloji yomwe ikugwirizana ndi zofunikira zawo.