Muyero we ieeee802.3av unotsanangura 10g/1g (uplink rate 10g/downlink rate 1g) asymmetric physical layer mode (pano inonzi 10g/1g asymmetric mode) uye 10g/10g (uplink rate uye downlink rate zvese zviri 10g) symmetric two. A physical layer (pano inonzi 10g/10g symmetric mode):
Olt iri mu 10g/1g non-pair mode inogona kuenderana ne onu mu 1g/1g symmetric mode uye onu mu 10g/1g asymmetric mode. OLT iri mu 10g/10g symmetric mode inogona kuenderana ne onu mu 1g/1g mode, onu mu 10g/1g asymmetric mode, uye onu mu 10g/10g symmetric mode.
OLT iri muchimiro che symmetric uye OLT iri muchimiro che asymmetric zvakafanana munzira ye downlink ye optical path ye physical layer, uye 10g channel inoshandisa 1577nm wavelength uye 64b/66b code encoding; saka zvisinei kuti onu iri muchimiro che symmetric kana asymmetric mode, inogona kugamuchira downlink data kubva ku olt. Olt ichagara ichiparadzira mpcpdsicoverygate (multi-point control protocol, multi-point control protocol) frame. Nzvimbo yeruzivo rwekuwana mufuremu inoshandiswa zvakanyanya kuzivisa kugona kwehwindo re uplink (1g, 10g, 1g+10g dual rate), uye onu inogona kuwana olt kuburikidza neiyi frame current working mode.
Iyo onu iri muchimiro che symmetric uye asymmetric mode inoenderana zvachose pa mac layer (media access control, medium access control layer), uye musiyano uripo pakati padzo wakanyanya mu phy layer (physical layer, the bottom layer ye osi), uye ma parameter ekutumira e phy layer anoenderana ne Isa optical module ye onu:
Kana module ye optical isina kuenzana yaiswa mu onu (ndiko kuti, onu iri asymmetric onu), sezvo mwero we uplink we asymmetric optical module uri kusvika 1g, phy layer ye onu inogona kungogadzirisa mwero we transmission we 1g kuti ushande mu asymmetric mode . Kana symmetric optical module yaiswa mu onu, sezvo mwero we uplink we optical module uri kusvika 10g, onu inogona kugadzirisa mwero we sending we phy layer kusvika 10g kuti ishande mu symmetric mode, kana kugadzirisa mwero we sending we phy layer kusvika 1g kuti ishande mu asymmetric mode.
Zvisinei, onu ne olt zviripo zvichave nezvikanganiso zvinotevera kana network yavandudzwa:
Panguva yekuvandudzwa kwenetwork, OLT inogona kuchinja pakati pe symmetric mode ne asymmetric mode, asi ONU haigone kuchinja zvichienderana nekushandurwa kweOLT. Semuenzaniso, OLT inochinja kubva pa symmetric mode kuenda ku asymmetric mode, asi ONU ichiri mu symmetric mode. Panguva ino, local end (olt) uye remote end (onu) modes hazvienderane.Zvinhu zvehunyanzvi:
Tichitarisa zvikanganiso zviripo muunyanzvi hwekare, dambudziko rehunyanzvi rakagadziriswa nepfungwa iyi nderekuti: maitiro ekuita kuti onu ishanduke zvinoenderana nemaitiro ekushandura e olt kana olt ichiita shanduko ye symmetric mode/asymmetric mode; pfungwa iyi inoita musanganiswa wakakwana we olt ne onu Adaptation, hapazovi nekusawirirana pakati pe local end mode ne remote end mode.
Kuti zvizadzise chinangwa chiri pamusoro apa, onu yakapihwa nechinhu ichi chitsva inochinjika ku 10g/10g symmetry uye 10g/1g asymmetry, kusanganisira matanho anotevera:
Danho a: Wana rudzi rwe optical module ye onu. Kana optical module iri symmetrical optical module, sarudza current working mode ye onu. Kana working mode ye onu iri symmetrical mode, enda ku step b; kana working mode ye onu iri asymmetrical mode, enda ku step c;
Danho b: Sarudza kana huwandu hweruzivo rwewindow rwakapihwa ne olt mu asymmetric mode huri pamusoro pemuganho wakatarwa, kana zvakadaro, chinja working mode ye onu kubva pa symmetrical mode kuenda pa asymmetrical mode, wobva wapera; zvikasadaro, chengetedza working mode ye onu, wobva wapera;
Danho c: Sarudza kana huwandu hweruzivo rwewindow rwakapihwa ne olt mu symmetric mode huri pamusoro pemuganho wakatarwa, kana zvakadaro, chinja working mode ye onu kubva ku asymmetric mode kuenda ku symmetric mode, wobva wapera; zvikasadaro, chengetedza working mode ye onu, end.
Zvichibva pamhinduro yehunyanzvi iri pamusoro apa, maitiro ekuwana rudzi rwe optical module ye onu yakatsanangurwa mudanho a ndeekuti: apo onu inotanga, tora rudzi rwe optical module ye onu:
Kana module ye optical iri module ye optical isina kuenzana, gumisa maitiro acho wobva wapedzisa;
Kana optical module iri symmetrical optical module, kana onu ikachinja kubva pa no-light state kuenda ku required state, torazve rudzi rwe optical module ye onu, kana optical module iri symmetrical optical module, ramba uchiita nhanho a inotevera; kana optical module iri asymmetrical Optical module, gumisa maitiro acho wobva wapedzisa.
Iyo onu yakapihwa nechinhu chitsva ichi inochinjika kune 10g/10g symmetrical systems uye 10g/1g asymmetrical systems, kusanganisira onu detection module, symmetrical mode switching module, uye asymmetrical mode switching module yakarongwa pa onu;
Module yekuona onu inoshandiswa: kuwana rudzi rwe optical module ye onu, kana optical module iri symmetrical optical module, kuona mashandiro ari kuita onu, kana mashandiro ari kuita onu ari symmetrical mode, kutumira chiratidzo che symmetrical mode switching ku symmetrical mode switching module; Kana mashandiro ari kuita onu ari asymmetric mode, chiratidzo che asymmetric mode switching chinotumirwa ku asymmetric mode switching module;
Module yekuchinja symmetric mode inoshandiswa: mushure mekugamuchira chiratidzo chekuchinja symmetric mode, kutonga kana huwandu hweruzivo rwewindow rwakapihwa ne olt mu asymmetric mode hunosvika pamuganho wakatarwa kana kwete, uye kana zvakadaro, chinja working mode ye onu kubva mu symmetric mode kuenda ku asymmetric mode; Zvikasadaro chengetedza working mode ye onu;
Module yekuchinja maitiro asymmetric inoshandiswa: mushure mekugamuchira chiratidzo chekuchinja maitiro asymmetric, tonga kana huwandu hweruzivo rwewindo rwunotumirwa ne olt ku symmetric mode huri pamusoro pemuganho wakataurwa, uye kana zvakadaro, chinja maitiro ekushanda e onu kubva ku asymmetric mode kuenda ku symmetric mode ; Zvikasadaro chengetedza onu ichishanda.
Zvichibva pachirongwa chehunyanzvi chataurwa pamusoro apa, maitiro ekuwana mhando ye optical module ye onu mu onu detection module ndeekuti: kana onu yatanga, tora mhando ye optical module ye onu:
Kana module ye optical iri module ye optical isina kuenzana, rega kushanda;
Kana optical module iri symmetrical optical module, kana onu ikachinja kubva pa no-light state kuenda ku related state, torazve rudzi rwe optical module ye onu, kana optical module iri symmetrical optical module, ramba uchiita onu detection module inotevera; kana optical module iri non-Symmetrical optical module, rega kushanda.
Zvichienzaniswa neunyanzvi hwekare, chigadzirwa ichi chine zvakanakira zvinotevera:
(1) Tichitaura nezvedanho a rechinhu ichi chitsva, zvinogona kuzivikanwa kuti chinhu ichi chitsva chakawana mhando ye onu nemazvo; nekuda kweizvi, tichitarisa danho b nedanho c rechinhu ichi chitsva, zvinogona kuonekwa kuti chinhu ichi chitsva chinogona kuona mashandiro e olt, uye zvichienderana nemaitiro e olt, kugadzirisa kugadzirisa mashandiro e onu, kuitira kuti pave nekuchinja kwakakwana pakati pe olt ne onu, uye hapazovi nekusawirirana pakati pemamiriro ekupedzisira emuno nemaitiro ekupedzisira ekure mumifananidzo yapfuura.
(2) Tichitarisa danho rekutanga rechinhu ichi chitsva, zvinogona kuonekwa kuti kana chinhu ichi chitsva chikaratidza kuti rudzi rweonu ionu isina kufanana, kureva kuti, onu ine simba rekushanda muchimiro chisina kufanana, uye onu inogona kungoenderana nechimiro che10g/10g chakafanana, uye kuteverwa hakuitwe panguva ino (nekuti onu haigone kuchinja maitiro ekushanda), nokudaro ichideredza mari yekushanda uye ichivandudza kushanda zvakanaka kwebasa.
(3) Tichitarisa danho rekutanga rechinhu ichi, zvinogona kuonekwa kuti chinhu ichi chinofanira kuona mhando ye optical module ye onu kana onu yatanga uye kana onu ichichinja kubva parima kuenda pachiedza, uye 2 detections dzataurwa pamusoro apa dzinogona kuona mamiriro ekutanga e onu Rudzi rwe optical module (detection pakutanga), uye kana optical module yakachinjwa (detection painochinja kubva pa no-light state kuenda pachiedza); saka, chinhu ichi chinogona kushandura nemazvo nzira dzekushanda dzinotevera zvichienderana nerudzi rwe optical module ye onu, kuitira kuti ive nechokwadi chekuti basa racho rakarurama.
Nguva yekutumira: Chikumi-05-2023