Umgangatho we-ieee802.3av uchaza i-10g/1g (ireyithi ye-uplink 10g/downlink rate 1g) imowudi yomaleko we-asymmetric (emva koku kubhekiselwa kuyo njenge-10g/1g imo ye-asymmetric) kunye ne-10g/10g (ireyithi ye-uplink kunye nereyithi ye-downlink zombini ziyi-10g) zombini zi-symmetrical A. Umaleko womzimba (emva koku kubhekiselwa kuwo njengemowudi ye-10g/10g symmetric):
I-olt kwi-10g/1g yemowudi engeyombini inokuhambelana ne-onu kwimowudi ye-symmetric ye-1g/1g kunye ne-onu kwi-10g/1g ye-asymmetric mode.I-OLT kwi-10g / 10g imodi ye-symmetric inokuhambelana ne-onu kwimodi ye-1g / 1g, i-onu kwi-10g / 1g imodi ye-asymmetric, kunye ne-onu kwi-10g / 10g imo ye-symmetric.
I-OLT kwimodi ye-symmetric kunye ne-OLT kwimodi ye-asymmetric iyafana kwi-downlink ye-downlink ye-optical path of the layer ngokomzimba, kunye ne-channel ye-10g isebenzisa i-1577nm wavelength kunye ne-64b / 66b ikhowudi yekhowudi;ngoko ke akukhathaliseki nokuba i-onu ikwimowudi yesymmetric okanye imowudi ene-asymmetric, inokufumana idata esezantsi yekhonkco kwi-olt.I-olt iya kusasaza ngamaxesha athile mpcpdsicoverygate (iprotocol yolawulo lwamanqaku amaninzi, iprotocol yolawulo lwamanqaku amaninzi) isakhelo.Intsimi yolwazi lokufumanisa kwisakhelo isetyenziselwa ngokukodwa ukwazisa amandla efestile ye-uplink (1g, 10g, 1g + 10g ireyithi ezimbini), kwaye i-onu inokufumana i-ol ngokusebenzisa le ndlela yokusebenza yangoku yesakhelo.
I-onu kwimo ye-symmetric kunye nemowudi ye-asymmetric ihambelana ngokupheleleyo kumaleko we-mac (ulawulo lokufikelela kwimidiya, ulawulo lokufikelela oluphakathi), kwaye umahluko phakathi kwabo ugxininiswe kuluhlu lwe-phy (umaleko womzimba, umaleko ongezantsi we-OS), kunye ukuthumela iiparamitha zomaleko we-phy kuxhomekeke kuFaka imodyuli yokubona ye-onu:
Xa imodyuli ye-asymmetric optical ifakwe kwi-onu (oko kukuthi, i-onu i-onu e-asymmetric), ekubeni izinga lokunyuka kwemodyuli ye-asymmetric optical ifikelela kwi-1g, i-phy layer ye-onu inokuqwalasela kuphela izinga lokudluliselwa kwe-1g. ukusebenza kwimo ye-asymmetric.Xa imodyuli ye-symmetrical optical ifakwe kwi-onu, ekubeni isantya se-uplink semodyuli ye-optical ifikelela kwi-10g, i-onu inokuqwalasela izinga lokuthumela le-phy layer ukuya kwi-10g ukusebenza kwimo ye-symmetric, okanye ukuqwalasela izinga lokuthumela umaleko we-phy ukuya kwi-1g ukusebenza kwimo ye-asymmetric.
Nangona kunjalo, i-onu ekhoyo kunye ne-olt iya kuba neziphene zilandelayo xa inethiwekhi iphuculwa:
Ngexesha lokuphucula inethiwekhi, i-OLT inokutshintsha phakathi kwemodi ye-symmetric kunye nemodi ye-asymmetric, kodwa i-ONU ayikwazi ukutshintshela ngokokuguqulwa kwe-OLT.Umzekelo, i-OLT itshintsha ukusuka kwimowudi yokulinganisa ukuya kwimowudi ye-asymmetric, kodwa i-ONU isekwimowudi ye-symmetric.Ngeli xesha, isiphelo sendawo (olt) kunye nesiphelo esikude (onu) iindlela azihambelani.Izinto zokuqonda ubuchwephesha:
Ijolise kwiziphene ezikhoyo kubugcisa bangaphambili, ingxaki yobugcisa esonjululwe yinkqubo yangoku: indlela yokwenza i-onu iguquguquke ngokwendlela yokuguqula i-olt xa i-olt yenza ukuguqulwa kwemo ye-symmetric / imo ye-asymmetric;uyilo lwangoku luqonda indibaniselwano egqibeleleyo ye-olt kunye ne-Onu Adaptation, akusayi kubakho kungqamana phakathi kwendlela yokuphela kwendawo kunye nemowudi yesiphelo esikude.
Ukuze kuphunyezwe le njongo ingentla, i-onu ebonelelwe ngokwenziwa kwangoku ilungelelanisa i-10g/10g symmetry kunye ne-10g/1g ye-asymmetry, kuquka la manyathelo alandelayo:
Inyathelo a: Fumana uhlobo lwemodyuli yokubona ye-onu.Xa imodyuli yokubona iyimodyuli elinganayo, misela indlela yokusebenza ye-onu yangoku.Ukuba imo yokusebenza ye-onu ikwimo elinganayo, yiya kwinyathelo b;ukuba indlela yokusebenza ye-onu ikwimo elinganayo , yiya kwinyathelo c;
Inyathelo b: Qinisekisa ukuba inani lengcaciso yefestile ekhutshwe yi-olt kwimodi ye-asymmetric ingaphezulu komda ochaziweyo, ukuba kunjalo, tshintshela imo yokusebenza ye-onu ukusuka kwimo ye-symmetrical ukuya kwimo ye-asymmetrical, kunye nesiphelo;ngenye indlela, gcina imo yokusebenza ye-onu, kwaye uphele;
Inyathelo c: Qinisekisa ukuba inani lengcaciso yefestile ekhutshwe yi-olt kwimowudi yokulinganisa ingaphezulu komqobo ochaziweyo, ukuba kunjalo, tshintshela imo yokusebenza ye-onu ukusuka kwimo ye-asymmetric ukuya kwimo ye-symmetric, kunye nesiphelo;ngenye indlela, gcina imo yokusebenza ye-onu, isiphelo.
Ngokwesiseko sesisombululo sobugcisa esingentla, inkqubo yokufumana uhlobo lwemodyuli ye-onu echazwe kwinyathelo: xa i-onu iqala, fumana uhlobo lwemodyuli ye-optical ye-onu:
Ukuba imodyuli ye-optical yimodyuli ye-asymmetric optical, phelisa inkqubo kunye nokuphela;
Ukuba imodyuli yokukhanya yimodyuli elinganayo yokubona, xa i-onu itshintsha ukusuka kwimeko yokungabikho-kukhanya ukuya kwimeko efanelekileyo, iphinda ifumane uhlobo lwemodyuli ye-onu, ukuba imodyuli ye-optical yimodyuli ye-optical symmetrical, qhubeka nenkqubo elandelayo. yenyathelo a;ukuba imodyuli yokubona i-asymmetrical Optical modyuli, phelisa inkqubo kwaye uphele.
I-onu ebonelelwe ngokuqanjwa kwangoku ihambelana ne-10g / 10g ye-symmetrical kunye ne-10g / 1g ye-asymmetrical systems, kubandakanywa imodyuli yokufumanisa i-onu, imodyuli yokutshintsha imodyuli ye-symmetrical, kunye nemodyuli yokuguqula imodyuli ye-asymmetrical ehlelwe kwi-onu;
Imodyuli yokubona i-onu isetyenziselwa: ukufumana uhlobo lwemodyuli ye-onu, xa imodyuli ye-optical imodyuli ye-onu elinganayo, misela indlela yokusebenza yangoku ye-onu, ukuba indlela yokusebenza ye-onu yimodyuli ye-symmetrical. thumela isignali yokutshintsha imo ye-symmetrical kwimodyuli yokutshintsha imodyuli;Ukuba imo yokusebenza ye-onu yimowudi ye-asymmetric, i-asymmetric mode switching signaling ithunyelwa kwimodyuli yokutshintsha imodyuli ye-asymmetric;
Imodyuli yemodyuli yokutshintsha imodyuli isetyenziselwa: emva kokufumana isignali yokutshintsha imo ye-symmetric, gweba ukuba inani lengcaciso yefestile ekhutshwe yi-olt kwimo ye-asymmetric ifikelela kumda ochaziweyo okanye hayi, kwaye ukuba kunjalo, tshintshela indlela yokusebenza ye-onu. ukusuka kwimo ye-symmetric ukuya kwimo ye-asymmetric;Kungenjalo gcina imo yokusebenza ye-onu;
Imodyuli yokutshintsha kwemodyuli ye-asymmetric isetyenziselwa: emva kokufumana isignali yokutshintsha imo ye-asymmetric, gweba ukuba inani lengcaciso yefestile ethunyelwe yi-olt kwimowudi yolingano ingaphezulu komqobo okhankanyiweyo, kwaye ukuba kunjalo, tshintshela indlela yokusebenza ye-onu ukusuka. imo ye-asymmetric kwimowudi yolingano ;Kungenjalo gcina kwimowudi yakho yokusebenza.
Ngokwesiseko sesikimu sobugcisa esikhankanywe ngasentla, inkqubo yokufumana uhlobo lwemodyuli ye-optical ye-onu kwimodyuli yokufumanisa i-onu yile: xa i-onu iqala, fumana uhlobo lwemodyuli ye-optical ye-onu:
Ukuba imodyuli ye-optical yimodyuli ye-asymmetric optical, yeka ukusebenza;
Ukuba imodyuli yokubona iyisimmetrical imodyuli yokukhanya, xa i-onu itshintsha ukusuka kwimeko yokungabikho-kukhanya ukuya kwimeko enxulumeneyo, iphinda ifumane udidi lwemodyuli yokubona ye-onu, ukuba imodyuli ye-optical yimodyuli elinganayo, qhubeka nenkqubo elandelayo. yemodyuli yokufumanisa i-onu;ukuba imodyuli yokubona ayiyo-Symmetrical optical modyuli, yeka ukusebenza.
Xa kuthelekiswa nobugcisa bangaphambili, ukuveliswa kwangoku kuneengenelo zezi:
(1) Ngokubhekiselele kwinyathelo a lokuqanjwa kwangoku, kunokwaziwa ukuba imveliso yangoku ifumene kuqala ngokuchanekileyo uhlobo lwe-onu;Ngesi siseko, ngokubhekisele kwinyathelo b kunye nenyathelo c lokuqanjwa kwangoku, kunokubonwa ukuba ukuveliswa kwangoku kunokubona indlela yokusebenza ye-olt, kwaye ngokwendlela yokusebenza ye-olt, ukulungelelanisa ukulungisa indlela yokusebenza. ye-onu, ukuze uqonde ulungelelwaniso olugqibeleleyo phakathi kwe-olt kunye ne-onu, kwaye akuyi kubakho kungqamana phakathi kwendlela yokuphela kwendawo kunye nemo yesiphelo esikude kubugcisa bangaphambili.
(2) Ngokubhekiselele kwinyathelo a lokuqanjwa kwangoku, kunokubonwa ukuba ukuba ukuveliswa kwangoku kugqiba ukuba uhlobo lwe-onu yi-onu e-asymmetric, oko kukuthi, i-onu kuphela inamandla okusebenza kwimo ye-asymmetric, kunye ne-onu. i-onu ingakwazi ukulungelelanisa kuphela imodi ye-symmetric ye-10g / 10g, kwaye ukulandelwa akukwenziwanga kule nkqubo yexesha (kuba i-onu ayikwazi ukutshintshela iindlela zokusebenza), ngaloo ndlela inciphisa iindleko zokusebenza kunye nokuphucula ukusebenza kakuhle.
(3) Ngokubhekiselele kwinyathelo a lokuqanjwa kwangoku, kunokubonwa ukuba ukuveliswa kwangoku kufuna ukubona uhlobo lwemodyuli ye-optical ye-onu xa i-onu iqaliswa kwaye xa i-onu iguquka ukusuka kwimeko emnyama ukuya kwimeko yokukhanya. , kunye nokufumanisa okukhankanywe ngasentla kwe-2 kunokubona imeko yokuqala ye-onu Uhlobo lwemodyuli ye-optical (ukubona ekuqaleni), kunye nokuba imodyuli ye-optical itshintshiwe (ukubona xa utshintsha ukusuka kwimeko yokukhanya ukuya kwindawo yokukhanya) ;ngoko ke, ukuveliswa kwangoku kunokutshintsha ngokuchanekileyo iindlela zokusebenza ezilandelayo ngokohlobo lwemodyuli ye-onu ye-optical, ukwenzela ukuba kuqinisekiswe ukuchaneka komsebenzi.
Ixesha lokuposa: Jun-05-2023