Sisoloko sisiva ngefiber opticiiswitshikunye ne-fiber optic transceivers. Phakathi kwabo, i-fiber opticiiswitshizizixhobo zokudlulisa inethiwekhi ezinesantya esiphezulu, ezikwabizwa ngokuba ngumjelo wefayibhaiiswitshikunye no-SANiiswitshi. Xa kuthelekiswa nesiqheloiiswitshi, basebenzisa iintambo zefiber optic njengesixhobo sokuhambisa. phakathi. Iingenelo zokuhanjiswa kwefiber optical zisantya esikhawulezayo kunye nobuchule obunamandla bokuchasana nokuphazamiseka. Zimbini iindidi eziphambili zefiber opticiiswitshi. Enye yiFCtshintshaesetyenziselwa ukudibanisa kwindawo yokugcina. Enye i-Ethernettshintsha, izibuko lujongano lwefiber optical, kwaye inkangeleko iyafana nojongano lombane oluqhelekileyo, kodwa uhlobo lojongano lwahlukile.
Kukho iintlobo ezintathu zokutshintshwa kwefayibha: ukutshintshwa kwinqanaba lokungena, i-workgroup-level fiber switches, kunye ne-core-level fiber switches. Ke masiqale ngeyokuqala i-core-level fiber optictshintsha!
I-1.core-level fiber optic switches
Into ebizwa ngokuba yi-core-leveliiswitshi(abakwabizwa ngokuba ngabalawuli) babekwe ngokubanzi kumbindi weSAN enkulu, edibanisa imiphetho emininziiiswitshiomnye komnye ukwenza uthungelwano SAN kunye namakhulu amazibuko. Undoqotshintshainokusetyenziswa njengento ezimeleyotshintshaokanye edgetshintsha, kodwa imisebenzi yayo ephuculweyo kunye nesakhiwo sangaphakathi senza ukuba isebenze ngcono kwindawo yokugcina engundoqo. Eminye imisebenzi ye-coretshintshakwakhona zibandakanya: inkxaso yeeprotocol ngaphandle kwe-fiber optical (njenge-InfiniBand), inkxaso ye-2Gbps yeFiber Channel, kunye neenkonzo eziphambili ze-optical (umzekelo: ukhuseleko, i-trunk kunye nokucoca isakhelo, njl.). Izitshixo zefayibha ezikwinqanaba eliphambili zidla ngokubonelela ngamazibuko amaninzi, ukusuka kumazibuko angama-64 ukuya kumazibuko angama-128 nangaphezulu. Isebenzisa uqhagamshelo olubanzi kakhulu lwangaphakathi kwindlela yezakhelo zedatha ezinobuninzi bebandwidth. Injongo yokusebenzisa eziiiswitshikukwakha inethiwekhi enkulu yokugubungela kwaye unikeze i-bandwidth enkulu. Ziyilelwe ukuhambisa imiqondiso yesakhelo ngokukhawuleza kangangoko kunokwenzeka phakathi kwamazibuko amaninzi anolibaziseko olufutshane. Ukongeza, izitshixo zefiber ezingundoqo zihlala zisebenzisa iibhodi zesekethe ezishushu ezitshintshayo ezisekwe "kuhlobo lweblade": okoko njetshintshaibhodi ifakwe kwikhabhinethi, imisebenzi emitsha inokongezwa, kunye nokugcinwa kwe-intanethi nako kunokwenziwa. Kufuneka kwandiswe. Iiswitshi ezininzi zomgangatho ongundoqo azixhasi iilophu ezine-arbitrated okanye ezinye izixhobo eziqhagamshelwe ngokuthe ngqo. Bakhathalele kuphela amandla okutshintsha angundoqo. Ngenxa yokuba ukufumaneka yeyona nto ibalulekileyo kwindawo yonke, abantu bazimisele ukuchitha imali eninzi ekufuneni umsebenzi. Zonke iinxalenye zokungafuneki okuphezuluiiswitshiazidingeki, nto leyo ephelisa ngokupheleleyo inqaku elinye lokungaphumeleli kwaye iqinisekisa ixesha elide kakhulu le-Uptime. Ezi nkcitho zokungafuneki zisetyenziswa ngokubanzi kwiinqwelomoya ezifumanekayo eziphezulu, izixhobo zombane, iisekethe ezingafunekiyo, kunye nesoftware yokugcina ukufumaneka. Olu hlobo lwetshintshaineesekethe ezininzi ezakhelwe-ngaphakathi zokujongana nokusilela kwehardware ngaphakathitshintsha. Undoqoiiswitshikwifiber opticiiswitshiukubonelela ngokuthembeka okuphezulu kunye nokuxinana kwezibuko. Kwiziko ledatha kunye nenani elikhulu leziseko zeFiber Channel, iimveliso ezinjalo ziphantse zingabikho, zitshintshe indawo yokugcina indawo. Ke ngoko, kuninzi lothungelwano olufumanekayo oluphezulu, kuya kufuneka ukhethe inethwekhi enezitishi ezimbini ezakhiwe zizitshixo ezingundoqo zefiber.
I-2.inqanaba lomsebenzi we-fiber opticiiswitshi
Iiswitshi zeFiber optic zibonelela ngokukwazi ukuphosa uninziiiswitshikwiFabric enkulu. Ngokudibanisa izibuko enye okanye ngaphezulu zokutshintsha ezimbini, onke amazibuko aqhagamshelwe kwitshintshainokubona umfanekiso owahlukileyo wothungelwano, kwaye nayiphi na i-node kweli laphu inokunxibelelana nezinye iindawo. Ngokusebenzisa i-cascading switches, enkulu, ebonakalayo, isasazwetshintshainokumiselwa, kwaye umgama enokuwuthatha mkhulu kakhulu. Ilaphu elakhiwe ngeeswitshi ezininzi likhangeleka njengelaphu elenziwe ngotshintsho olwahlukileyo. Amazibuko kubo bonkeiiswitshiinokujongwa kwaye ifikeleleke njengazo zonke ezinye izibuko kwilaphu njengokufikelela kwiiswitshi zasekhaya. Iseva yegama elidibeneyo kunye nenkonzo yolawulo ivumela ukujonga kunye nokuguqula zonke iinkcukacha zeFabric ngokusebenzisa ujongano olulodwa. Into ebalulekileyo ekudaleni ilaphu elisasazwayo kukufumana i-bandwidth yoxhumano phakathi kweiiswitshi. Ireyithi esebenzayo phakathi kwawo nawaphi na amazibuko amabini achatshazelwa yi-bandwidth esebenzayo yonxibelelwano phakathi kweiiswitshi, kwaye kunokuba yimfuneko ukusebenzisa uxhulumaniso oluninzi phakathi kokutshintsha ukugcina i-bandwidth efunekayo. Ukutshintsha kweFiber Channel yeQela lomsebenzi zininzi kwaye zininzi. Iqela lomsebenziiiswitshizisetyenziswa ngeendlela ezininzi, kodwa eyona ndawo isetyenziswa kakhulu yiSAN encinci. Utshintsho olunjalo lunokudityaniswa kunye ngemigca yoqhagamshelo phakathi kokutshintsha ukubonelela ngamazibuko amaninzi. Imigca yokudibanisa phakathi kokutshintsha inokudalwa nakweyiphi na i-port kwiFiber Channeltshintsha. Nangona kunjalo, ukuba uceba ukusebenzisa iimveliso ezivela kubathengisi abaninzi, kufuneka uqinisekise ukuba izixhobo ziyasebenzisana.
3.inqanaba lokungenaiiswitshi
Ukusetyenziswa kokutshintsha kwinqanaba lokungena kwifiber opticiiswitshiigxile ikakhulu kumaqela amancinci asebenzayo kunye ne-8 ukuya kwi-16 izibuko. Ifanelekile kwizihlandlo ezinamaxabiso aphantsi kunye nesidingo esincinci sokwandiswa nokulawula. Zihlala zisetyenziselwa ukubuyisela ii-hubs, ezinokubonelela nge-bandwidth ephezulu kwaye zinikeze uxhulumaniso oluthembekileyo kunama-hubs. Abantu ngokubanzi abathengi inqanaba lokungenaiiswitshingokwahlukeneyo, kodwa kaninzi uzithenge kunye namanye amanqanaba okutshintsha ukwenza isisombululo esipheleleyo sokugcina. Izitshixo zefiber optic ezikwinqanaba lokungena zibonelela ngenqanaba elilinganiselweyo lesakhono se-port cascading. Ukuba abasebenzisi basebenzisa izixhobo ezikumgangatho ophantsi bodwa, banokuhlangabezana neengxaki ezithile zokulawula.