Ngati simukudziwa za kusiyana kwa EPON Vs GPON ndikosavuta kusokonezeka pogula.Kudzera m'nkhaniyi tiyeni tiphunzire kuti EPON ndi chiyani, GPON ndi chiyani, ndi kugula iti?
Kodi EPON ndi chiyani?
Ethernet passive optical network ndiye mawonekedwe athunthu a EPON acronym.EPON ndi njira yolumikizira makompyuta pamanetiweki osiyanasiyana ochezera.Mosiyana ndi EPON, GPON imagwira ntchito pama cell a ATM.EPON ndi GPON amasiyanitsidwa motere.Kukhazikitsa Paketi Yowonjezera Pa Ma Network Narrow Bandwidth Networks (EPON) mu Fiber to the Premises and Fiber to the Home systems.EPON imathandizira ma endpoints angapo kuti azilumikizana pamtundu umodzi wa kuwala.EPON imatumiza data, zomvera, ndi makanema pa intaneti kudzera pamapaketi a Efaneti.Palibe kutembenuka kwina kapena kuyika kofunikira pamalumikizidwe a EPON chifukwa ndi chakumbuyo-kumagwirizana ndi miyezo ina ya Efaneti.Sizovuta kufika ku 1 Gbps kapena 10 Gbps.Kunena mwanjira ina, ndizotsika mtengo kuposa GPON.
GPON ndi chiyani?
Gigabit Ethernet Passive Optical Network ndi dzina lonse lachidule cha GPON.
Pakulankhulana ndi mawu, Gigabit Ethernet Passive Optical Network imagwiritsa ntchito protocol ya ATM, pomwe kuchuluka kwa data kumayendetsedwa kudzera pa Ethernet.Kuthamanga kwambiri kutsika ndi kumtunda kulipo ndi GPON poyerekeza ndi EPON.Broadband passive Optical network, kapena GPON, ndi mulingo wofikira.GPON imagwiritsidwa ntchito pamanetiweki a FTTH.Chifukwa cha bandwidth yake yayikulu, zosankha zosinthika zautumiki, komanso kufikira kwakukulu, GPON ikukhala ukadaulo wapaintaneti wosankha.Njirayi imawonedwa ngati muyezo wagolide wokulitsa kufikira kwa ma network a Broadband.Mofananamo, 2.5 Gbps ikhoza kupezedwa kumtunda ndi pansi.Ndi zotheka kukwaniritsa 2.5Gbps kunsi kwa mtsinje ndi 1.25Gbps kuthamanga kumtunda.
EPON Vs GPON Mugule iti?
1) Miyezo yosiyana yatengedwa ndi GPON ndi EPON.GPON ndiukadaulo wapamwamba kwambiri kuposa EPON ndipo imatha kuthandiza ogwiritsa ntchito ambiri komanso kutumiza ma data.Mtundu wa chimango wa ATM, womwe udachokera kuukadaulo woyambira wa APONBPON optical fiber communication, umagwiritsidwa ntchito ndi njira yotumizira ku GPON.EPON code stream ndi mtundu wa Ethernet frame format, ndipo EPON's E imayimira interconnected Ethernet chifukwa poyamba zinali zofunika kuti EPON athe kulumikizana mwachindunji ndi intaneti.Kuti athe kutengera kufalikira kwa fiber optical, mawonekedwe a chimango a EPON mwachilengedwe amakhala kunja kwa chimango cha Efaneti.
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Muyezo wa IEEE 802.3ah umalamulira EPON.Ili ndiye lingaliro lalikulu kumbuyo kwa mulingo wa EPON wa IEEE: kuyimitsa EPON momwe zingathere mkati mwazomangamanga za 802.3 popanda kukulitsa protocol ya MAC ya Ethernet yokhazikika pang'ono momwe mungathere.
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GPON ikufotokozedwa muzotsatira za ITU-TG.984.Pofuna kusunga nthawi ya 8K, kusinthika kwa GPON kumapangitsa kuti zigwirizane ndi ntchito zomwe zilipo kale za TDM ndikusunga mawonekedwe a 125ms osasunthika.Pofuna kuthandizira ma protocol ambiri, kuphatikiza ATM, GPON imapereka mtundu wa phukusi.GEM:GPONEncapsulaTIonMethod.Deta ya ATM imatha kuphatikizidwa ndi ma protocol ena chifukwa cha kupanga.
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4) Muzochitika zenizeni, GPON imapereka bandwidth yothandiza kuposa EPON.Utumiki wake ndi wothandiza kwambiri, ndipo mphamvu zake zogawanika zimakhala zamphamvu.Zochita zotsogola kwambiri zimatheka chifukwa cha kuthekera kwake kusamutsa mautumiki ambiri a bandwidth, kuwonjezera mwayi wogwiritsa ntchito, ndikuganizira zachitetezo chamitundu yambiri ndi QoS.Izi zili choncho chifukwa GPON imawononga ndalama zambiri kuposa EPON, pamene kusiyana pakati pa ziwirizi kukucheperachepera chifukwa cha kufalikira kwa teknoloji ya GPON.
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Ponseponse, GPON imaposa EPON potengera ma metrics ogwirira ntchito, koma EPON ndiyosavuta komanso yotsika mtengo.Ndizotheka kuti m'tsogolomu msika wa burodibandi, kukhalira limodzi ndi kuthandizana kungakhale kofunika kwambiri kuposa kusankha yemwe alowe m'malo mwa ndani.GPON ndi yabwino kwa makasitomala omwe ali ndi bandwidth, mautumiki angapo, ndi zosowa zachitetezo komanso omwe amagwiritsa ntchito ukadaulo wa ATM pamaneti awo amsana.Mu gawo la msika lomwe lili ndi makasitomala omwe amakhudzidwa kwambiri ndi mtengo ndipo ali ndi nkhawa zochepa zachitetezo, kwa iwo EPON yatulukira ngati patsogolo.Chifukwa chake pogula malinga ndi zosowa za kasitomala amatha kusankha kuti agule iti.