Onu vs .} Ont vs .}} qhov sib txawv thiab kev sib raug zoo
Hauv kev nkag mus siv fiber ntau-optic network (e . g., ftth, FTTB),Onu, ont, thiab oltyog peb cov khoom tseem ceeb uas ua rau tus caj qaum ntawm passical networks (pon) . Kuv txhua tus tau sib txawv yog qhov kev sib cais los ntawm lub cav hluav taws xob tsis zoo los ntawm kev ua haujlwm txhim kho los ntawm kev sib cav sib ceg
1. Cov ntsiab lus txhais thiab cov luag haujlwm tseem ceeb
| Cuab yeej cuab tam | Lub Npe Tag Nrho | Lub luag hauj lwm | Kev xa tawm qhov chaw | Tseem ceeb tsheej |
|---|---|---|---|---|
| Tus txhad | Kab Kho Kho Qhov Terminal | Kev sib thab hauv nruab nrab & tswj | Isp Central Chaw Haujlwm / Cov Ntaub Ntawv Chaw | Tswj hwm onus / onts, faib bandwidth, thiab interfaces nrog cov tseem ceeb network {}} |
| Onu | Chav tsev network optical | Cov Neeg Siv Khoom Nkag Mus Rau Ntawm | Cov khoom siv xauj tsev (e {{{1} g .}}, mdus, cov lag luam) | Converts optical cov cim rau ethernet / VoIP rau ntau tus neeg siv . |
| Ont | Kho kho lub davhlau ya nyob twg | Xaus cov neeg siv davhlau ya nyob twg | Lub tsev nyob (FTH) | Ncaj qha txuas rau qhov kawg-neeg siv khoom siv (PCs, xov tooj, Wi-Fi) {2}. |
2. sib txawv
(1) qhov sib txawv
| Yam zoo | Tus txhad | Onu | Ont |
|---|---|---|---|
| Txoj hauj lwm hauv network | Isp sab (ntws los) | Nruab Nrab (FTB / FTTC) | Xaus-Tus Neeg Siv (FTH) |
| Thawj lub luag hauj lwm | Aggregates tsheb, tswj xyuas pon | Ntau tus neeg siv teeb liab hloov dua siab tshiab | Kev Nkag Mus Rau Cov Neeg Siv Khoom |
| Raug siv cov ntaub ntawv | Cov Ntaub Ntawv Chaw, Cos | Cov chav tsev, chaw ua haujlwm | Ib tsev neeg ib tsev |
| Kev cuam tshuam | Uplink: Core Network (10G / 40g) Downlink: Pon (GPON / EPON) |
Uplink: Pon Downlink: Ethernet / VoIP |
Uplink: Pon Downlink: Ethernet / Wi-Fi / VoIP |
| Kev tswj | Kev tswj cov lus qhia / ONTS ntawm OMCI | Tswj los ntawm OLT | Tswj los ntawm OLT |
(2) Raws Cai & Cov Qauv
Tag nrho peb yuav tsum txhawb nqa tib yamPon tus qauv (e.g., Gon, epon, xgs-pon) {{. Txawm li cas los xij, txawm li cas los xij:
Tus txhadleegDynamic bandwidth faib (DBA).
Onu / ontraws li nram qab noOMCI (ONT tswj kev tswj hwm interface)Rau tej thaj chaw deb kev ua si .
(3) Lub cev cua sov .} lub luag haujlwm
Tus txhadyog tus"Lub Hlwb"ntawm lub pon, tswj cov tsheb ntws .
Onu / ontyog"Nkag mus tau cov ntsiab lus", hloov cov cim kho qhov muag rau cov khoom siv xaus .
Ont yog ib subset ntawm onu-Xeem yog rauib leeg-neeg siv ftth, thaum onu servesNtau tus neeg siv FTB / FTTC.
3. Yuav ua li cas lawv ua haujlwm ua ke
(1) Network Hierarchy
OLT → Splitter → ** ont ** (e . g}}} hg8245h) → Tsev router
- Tuscais(1: N piv, e {{{{1} g}}}}}}}}}}}} {} {{}}
- Tus txhadkev sivLub sij hawm-faib ntau txoj kev nkag tau (TDMA)los tswj cov kev sib txuas lus / ont kev sib txuas lus .
(2) tiag-ntiaj teb xa tawm
- Ftth (fiber ntau-rau-tsev):
OLT → Splitter → ** ont ** (e . g}}} hg8245h) → Tsev router
- FTB (Fiber-rau-lub tsev):
OLT → Splitter → ** onu ** (E .!}} → Ethernet Hloov → Cov Tsev
- Enterprise Pon:
OLT → Splitter → ** Onu ** (Ua Lag Luam Rooj vag) → Neeg Ua Lag Luam LAN
4. Xaiv cov qauv
| Xwm txheej | Pom zoo ntaus ntawv | Piv txwv li cov qauv |
|---|---|---|
| Thaj Ftth | Ont | Huawei HG8245H, Nokia g-240 wa |
| Ntau lub tsev nyob (MDU) | Onu | ZTE F601, CALIX 716GE-I |
| Isp aggration | Tus txhad | Huawei Ma5800, Nokia Isam Fx -16 |
5.} Xaus
Tus txhad=} Cen paus cultiver (ISP sab) .
Onu= Ntau cov neeg siv khoom siv (FTTB / FTTC) {2.
Ont{{0= ib-tus neeg siv davhlau ya nyob twg (FTTH).
Ont yog hom ntawm onu, tab sis onu muaj cov ntawv thov dav dav .
Tag nrho peb yuav tsum ua raws liPon Cov Qauv (GPON / EPON / XGS-PON)rau kev sib cuam tshuam .
