Lub luag haujlwm ntawm ONU hauv FTH Networks: Kev tshawb xyuas kev paub
Nyob rau hauv ib fiber-to-the-tsev (FTH) network, tusChav tsev kho kho kho kho qhov muag (ONU)Ua haujlwm raws li cov cuab yeej tseem ceeb kawg uas txuas tus choj kho qhov muag tshaj tawm kho qhov muag network (ODN) thiab tus neeg siv cov cheeb tsam network (LAN). Hauv qab no yog cov ncauj lus kom ntxaws kev puas tsuaj ntawm nws cov haujlwm thiab qhov tseem ceeb.
1. Cov haujlwm ua haujlwm ntawm ONU
(1) optical-hluav taws xob (O / e) teeb liab hloov dua siab tshiab
Downstream (OLT → ONU):
Tau txais1490Nm (GPON) / 1310NM (EPON)Qhov ntsuas kho kho qhov muag los ntawm cov olt, hloov cov paib hauv hluav taws xob (Ethernet / IP) thiab foring lawv rau cov neeg siv khoom siv (PC, router, thiab lwm yam).
Upstream (onu → olt):
Hloov pauv cov neeg siv hluav taws xob-tsim hluav taws xob rov qab mus rau hauv1310NM (GPON) / 1490NM (EPON)Cov cim kho qhov muag rau kev sib kis tau nce toj.
(2) Pon Quav Txoj Cai
Gppon / epon framing:
Gon:DecapsulatesLub pov haum (GPPPPPPPPSulation Cov Qauv) Ntasthiab cov txheej txheemOMCI (ONU tswj thiab tswj interface)lus.
Epon:LeegEthernet Mac thav ntawvthiab txhawb nqaMPCP (Multip-Point tswj kev cai)rau bandwidth kev sib hais.
Dynamic bandwidth faib (DBA):
Koom tes nrog cov olt kom ua tiav cov txheej txheem ntws los, tiv thaiv kev sib tsoo hauv cov nyiaj fiber ntau (tdma-raws).
(3) Tus Neeg Siv Nkag Mus Nkag & Kev Muab Kev Pab
Ntau qhov kev pabcuam cuam tshuam:
Ethernet (RJ45):Txuas rau cov routers, hloov pauv, lossis PCs.
VoIP (FXS chaw nres nkoj):Txhawb cov sip-raws li xov tooj.
Wi-nkaus (yeem):Qee cov txheej txheem sib xyaw ua ke wireless nkag tau (hgu qauv).
Vlan & QOs tuav:
Segregates Tsheb (Internet, IPTV, VOIP) siv802.1q vlan cim npethiab tswj QOs cov cai (ua ntej VoIP / IPTV).
2. Onu txoj hauj lwm hauv fttth architecture
OLT-ONTU kev sib raug zoo:
Lub onu kev ua haujlwm raws li aqhev ntaus ntawv, tswj tau los ntawm olt ntawm:
Kev lees paub (Zov / Password, Sn Binding)
Kev teeb tsa (tr -069}, omci)
Firmware hloov kho (chaw taws teeb kaw)
Tus Neeg Siv Lub Luag Haujlwm:
Ua raws li tuslub qhov rooj, hloov pon-spervion pon-spring cov cim rau hauv cov qauv ethernet / ip tsheb.
3. Cov ntsiab lus tseem ceeb
(1) Txheej Txheem Ua Raws Cai
Gpon (itu-t g.984) / Epon (IEEE 802.3ah)
OMCI (GPON) lossis OAM (EPON)rau kev tswj tej thaj chaw deb.
(2) Kev Ruaj Ntseg
AES -128} encryption (gpon)kom muaj kev nyab xeeb hauv cov tsheb khiav.
SN / ZAJ QAUVTxhawm rau tiv thaiv cov neeg tsis txaus siab rau cov ntawv sau npe.
(3) Fais Fab & Cov Qauv Kub
Ua raws liIeee 802.3az (Zog-txuag Ethernet)rau kev ua haujlwm tsis muaj zog.
Industrial-Qib Txhawb Kev Txhawb{{0 {}} degree rau +75 degreeib puag ncig.
4. Onu xa cov xwm txheej
| Ntaus | Rooj mov | Piv txwv li siv rooj plaub |
|---|---|---|
| HGU (Tsev Rooj vag Tsev) | Kev sib xyaw ua ke router / wi-nkaus | Thaj ftth (piv txwv li, Huawei HG8245) |
| SFU (ib tsev neeg nyob ib leeg) | Choj hom nkaus xwb | Enterprise CPE (piv txwv li, nokia g {0}} ga) |
| MDU (Ntau-nyob hauv tsev) | Ntau tus neeg siv kev sib sau ua ke | Cov chav tsev (piv txwv li, zte f601) |
5. OnU tswj thiab daws teeb meem
Kev cai tej teeb meem:
Olt sivTr -069lossisOmciTxhawm rau txhim kho onus (vlan, qos, firmware).
Cov xwm txheej uas qhia tias:
Pon (Khoom Ntsuab):Sau npe nrog olt.
Los (nyem Liab):Fiber Txuas Kev Ua Haujlwm Tsis Ua Tsis Zoo (Kuaj Cov Txuas / Sples).
Xaus: Vim li cas Onu yog indispensable
- Lub cev lub cev:Terminates fiber ntau optics, ua O / E hloov dua siab tshiab.
- Cov ntaub ntawv txuas txheej txheem:Cov txheej txheem Pon Raws Cai (Lub pov haum / MPCP).
- Network txheej:Ua ua raws li lub rooj vag (NAT, kev nyob hauv HGUS).
- Tswj txheej:Pab kom cov chaw taws teeb istp tswj (tr -069} / omci).
- A faulty onuYuav ua tiav kev cuam tshuam rau kev siv Is Taws Nem, ua rau nws tseem ceeb tshaj CPE (cov khoom siv khoom siv cov khoom siv) hauv FTH network.
