{"id":666,"date":"2020-04-13T11:50:50","date_gmt":"2020-04-13T09:50:50","guid":{"rendered":"http:\/\/tech.sosthe.sk\/?page_id=666"},"modified":"2020-04-13T11:50:50","modified_gmt":"2020-04-13T09:50:50","slug":"konektory-a-transceivery-pre-siete-lan","status":"publish","type":"page","link":"http:\/\/tech.sosthe.sk\/index.php\/sietove-technologie\/konektory-a-transceivery-pre-siete-lan\/","title":{"rendered":"Konektory a Transceivery pre siete LAN"},"content":{"rendered":"

Sie\u0165ov\u00e9 konektory<\/span><\/h3>\n

Siete s <\/span>metalickou kabel\u00e1\u017eou<\/span><\/em><\/strong>\u00a0(kr\u00faten\u00e1 dvojlinka – Twisted Pair) s\u00fa dnes zalo\u017een\u00e9 na technol\u00f3gii\u00a0<\/span>Ethernet<\/span><\/em><\/strong>\u00a0a m\u00f4\u017eu by\u0165 ur\u010den\u00e9 ako pre\u00a0<\/span>telekomunika\u010dn\u00e9 siete<\/span><\/em><\/strong>\u00a0(napr\u00edklad LAN), tak pre\u00a0<\/span>d\u00e1tov\u00e9 siete<\/span><\/em><\/strong>\u00a0(Storage, SAN).\u00a0V be\u017enej praxi nez\u00e1le\u017e\u00ed na\u00a0<\/span>prev\u00e1dzkovanej r\u00fdchlosti<\/span><\/em>\u00a0Ethernetu ani\u00a0<\/span>kateg\u00f3rii kabel\u00e1\u017ee,<\/span><\/em>\u00a0v\u017edy sa pou\u017e\u00edva konektor <\/span>8P8C<\/span><\/strong>\u00a0\u013eudovo ozna\u010dovan\u00fd ako\u00a0<\/span>RJ45<\/span><\/strong>.<\/span><\/p>\n

Ke\u010f pou\u017eijeme\u00a0<\/span>optick\u00fa kabel\u00e1\u017e<\/span><\/em><\/strong> (optick\u00e9 vl\u00e1kna – Optical Fiber), tak m\u00f4\u017eeme identicky pou\u017ei\u0165 technol\u00f3giu\u00a0\u00a0<\/span>Ethernet<\/span><\/em><\/strong>\u00a0a vytvori\u0165 siete\u00a0<\/span>LAN<\/span><\/em>\u00a0aj\u00a0<\/span>SAN<\/span><\/em>.\u00a0Alebo m\u00f4\u017eeme pou\u017ei\u0165 \u0161peci\u00e1lnu technol\u00f3giu\u00a0<\/span>Fibre Channel<\/span><\/em><\/strong>, ktor\u00e1 je ur\u010den\u00e1 pre d\u00e1tov\u00e9 siete\u00a0<\/span>SAN<\/span><\/em>\u00a0.\u00a0V oboch pr\u00edpadoch op\u00e4\u0165 nez\u00e1le\u017e\u00ed, \u010di s\u00fa optick\u00e9 vl\u00e1kna\u00a0 <\/span>Single mode<\/span><\/em>\u00a0(jednovidov\u00e9) alebo\u00a0<\/span>Multi mode<\/span><\/em> (viacvidov\u00e9), ich <\/span>triedy<\/span><\/em> a prev\u00e1dzkovanej <\/span>r\u00fdchlosti<\/span><\/em>.\u00a0Dnes sa najviac pou\u017e\u00edva konektor\u00a0<\/span>LC<\/span><\/strong>, ja som sa v praxi stretol e\u0161te so star\u0161\u00edm konektorom\u00a0<\/span>SC<\/span><\/strong>\u00a0a to je v\u0161etko.<\/span><\/p>\n

Metalick\u00e9 konektory<\/span><\/h3>\n

Ke\u010f sa pozrieme na\u00a0<\/span>po\u010d\u00edta\u010dovej siete<\/span><\/em><\/strong>\u00a0s metalickou kabel\u00e1\u017eou, tak ide v s\u00fa\u010dasnosti v\u017edy o\u00a0<\/span>kr\u00faten\u00fa dvojlinku<\/span><\/em><\/strong>\u00a0(Twisted Pair) a vyu\u017e\u00edva sa\u00a0<\/span>Ethernet over Twisted Pair<\/span><\/em><\/strong>.\u00a0Pou\u017e\u00edvan\u00fd k\u00e1bel obsahuje \u0161tyri p\u00e1ry vodi\u010dov (wire), ktor\u00e9 s\u00fa po celej d\u013a\u017eke pravideln\u00fdm sp\u00f4sobom skr\u00faten\u00e9.\u00a0K\u00e1bel m\u00f4\u017ee by\u0165 netienen\u00fd alebo r\u00f4znym sp\u00f4sobom tienen\u00fd.<\/span><\/p>\n

Konektor 8P8C – RJ45<\/span><\/h4>\n

Vo v\u0161etk\u00fdch t\u00fdchto pr\u00edpadoch (tienen\u00e1 aj netienen\u00e1 kr\u00faten\u00e1 dvojlinka) sa vyu\u017e\u00edva konektor\u00a0<\/span>8P8C<\/span><\/strong>, ktor\u00fd sa be\u017ene ozna\u010duje ako\u00a0<\/span>RJ45<\/span><\/strong>. <\/span>8P8C<\/span><\/strong>\u00a0je\u00a0<\/span>modul\u00e1rny konektor<\/span><\/em><\/strong>, ozna\u010denie znamen\u00e1\u00a0<\/span>8 position 8 contact<\/span><\/em><\/strong>\u00a0(8 poz\u00edci\u00ed 8 vodi\u010dov), teda, \u017ee konektor m\u00e1 8 poz\u00edci\u00ed a v\u0161etky s\u00fa osaden\u00e9 vodi\u010dom (m\u00f4\u017eu by\u0165 varianty, kde s\u00fa niektor\u00e9 poz\u00edcie neosaden\u00e9).\u00a0Konektor je op\u00edsan\u00fd v \u0161tandarde ANSI \/ TIA-1096-A a ISO-8877.<\/span><\/p>\n

\"\"<\/p>\n

Modul\u00e1rny konektor<\/span><\/em><\/strong> bol navrhnut\u00fd u\u017e v sedemdesiatych rokoch a pou\u017e\u00edval sa pre telef\u00f3niu. Bol vyu\u017e\u00edvan\u00fd v \u0161tandardizovanom<\/span> Registration Interface System<\/span><\/em>, kde sa pou\u017e\u00edva ozna\u010denie<\/span>\u00a0Registered Jack<\/span><\/em><\/strong>\u00a0(RJ).\u00a0T\u00e1to \u0161pecifik\u00e1cia definuje zapojenie vodi\u010dov, ale nie geometriu konektora.\u00a0V telef\u00f3nii bol najroz\u0161\u00edrenej\u0161\u00ed RJ11, kde sa vyu\u017e\u00edval konektor 6P2C. Preto\u017ee RJ45 vyu\u017e\u00edval ako prv\u00fd konektor 8P8C, tak sa v\u017eilo toto ozna\u010denie aj pre konektor. A zostalo tak, aj ke\u010f sa za\u010dal pou\u017e\u00edva\u0165 v Ethernetov\u00fdch sie\u0165ach, kde nem\u00e1 ni\u010d spolo\u010dn\u00e9 so \u0161tandardom RJ45.\u00a0Ja zostanem na\u010falej tie\u017e v pou\u017e\u00edvan\u00ed ozna\u010denia RJ45 pre konektor 8P8C.<\/span><\/p>\n

\"\"<\/p>\n

Konektor m\u00f4\u017ee by\u0165\u00a0<\/span>z\u00e1str\u010dka<\/span><\/em><\/strong>\u00a0(plug), ktor\u00e1 ukon\u010duje k\u00e1bel, ozna\u010duje sa ako\u00a0<\/span>samec<\/span><\/em>\u00a0(male), alebo\u00a0<\/span>z\u00e1suvka<\/span><\/em><\/strong>\u00a0(socket alebo jack) na pevnom umiestnen\u00ed na povrchu (na stene, paneli, zariadenie), ozna\u010duje sa ako\u00a0<\/span>samica<\/span><\/em>\u00a0(female).<\/span><\/p>\n

\"\"<\/p>\n

Zapojenie vodi\u010dov u konektoru RJ45<\/span><\/h4>\n

Pre Ethernet je zapojenie vodi\u010dov, z k\u00e1bla s kr\u00fatenou dvojlinkou, na modul\u00e1rny konektor pop\u00edsan\u00e9 v\u00a0<\/span>TIA\/EIA-568<\/span><\/strong>\u00a0(spolu s defin\u00edciou kabel\u00e1\u017ee).\u00a0K\u00e1ble sa predt\u00fdm zapojili v dvoch variant\u00e1ch:<\/span><\/p>\n

    \n
  • kr\u00ed\u017een\u00fd k\u00e1bel<\/span><\/em><\/strong>\u00a0(crossover cable) – na koncoch m\u00e1 prehoden\u00e9 zapojenie a pou\u017e\u00edval sa pre priame prepojenie po\u010d\u00edta\u010dov (aby sa vysielanie dostalo na pr\u00edjem a naopak), dnes u\u017e je (od pou\u017e\u00edvania 1000Base-T) na v\u0161etk\u00fdch sie\u0165ov\u00fdch kart\u00e1ch a zariadeniach podpora<\/span> Auto MDI-X<\/span><\/em><\/strong> , kedy d\u00f4jde automaticky k rekonfigur\u00e1cii vysielania a pr\u00edjmu, tak\u017ee nie je potreba kr\u00ed\u017een\u00fd k\u00e1bel<\/span><\/li>\n
  • priamy k\u00e1bel<\/span><\/em><\/strong>\u00a0(patch cable alebo straight through) – m\u00e1 oba konce zapojen\u00e9 identicky, sl\u00fa\u017ei na prepojenie zariaden\u00ed r\u00f4znych typov (napr\u00edklad pripojenie po\u010d\u00edta\u010da k prep\u00edna\u010du)<\/span><\/li>\n<\/ul>\n

    Zapojenie k\u00e1blov je pop\u00edsan\u00e9 v\u00a0<\/span>TIA\/EIA-568<\/span><\/strong>\u00a0a s\u00fa tu dve mo\u017en\u00e9 varianty\u00a0<\/span>T568A<\/span><\/strong>\u00a0a\u00a0<\/span>T568B<\/span><\/strong>\u00a0.\u00a0M\u00f4\u017ee sa zda\u0165, \u017ee je jedno, ako sa k\u00e1bel zapoj\u00ed, ak je to na oboch stran\u00e1ch rovnako. Ale pri vy\u0161\u0161\u00edch r\u00fdchlostiach spr\u00e1vne zapojenie minimalizuje ru\u0161enie.<\/span><\/p>\n

    \"\"<\/p>\n

    Pripevnenie konektora na k\u00e1bel (so spr\u00e1vnym zapojen\u00edm vodi\u010dov) sa ozna\u010duje ako\u00a0<\/span>krimpovanie<\/span><\/em><\/strong>\u00a0.\u00a0Pou\u017e\u00edvame kabel\u00e1\u017e ur\u010ditej kateg\u00f3rie (ako Cat 5e, Cat 6), bu\u010f netienen\u00fa alebo tienen\u00fa (prip\u00e1jame i uzemnenie). Tomu by mali zodpoveda\u0165 aj v\u0161etky\u00a0<\/span>pas\u00edvne prvky<\/span><\/em><\/strong>\u00a0(ako s\u00fa konektory, keystony – z\u00e1suvky, patch panely).\u00a0Plat\u00ed klasick\u00e9 pravidlo, \u017ee najslab\u0161\u00ed \u010dl\u00e1nok syst\u00e9mu ur\u010duje kvalitu cel\u00e9ho syst\u00e9mu.\u00a0Ako sme si pop\u00edsali minule, tak k\u00e1ble s\u00fa bu\u010f typu dr\u00f4t alebo lanko\/licna a tomu tie\u017e mus\u00ed zodpoveda\u0165 konektor, aby \u0161iel spr\u00e1vne nakrimpova\u0165.<\/span><\/p>\n

    Optick\u00e9 konektory<\/span><\/h3>\n

    Po\u010d\u00edta\u010dov\u00e9 siete<\/span><\/em><\/strong>\u00a0s optickou kabel\u00e1\u017eou (kde budeme pou\u017e\u00edva\u0165 optick\u00e9 konektory) vyu\u017e\u00edvaj\u00fa k\u00e1bel s jedn\u00fdm optick\u00fdm vl\u00e1knom, v praxi sa v\u00e4\u010d\u0161inou pou\u017eij\u00fa dva k\u00e1ble v p\u00e1re ako<\/span>\u00a0duplex<\/span><\/em><\/strong>\u00a0(po jednom sa vysiela a po druhom prij\u00edma).\u00a0Pou\u017e\u00edva sa<\/span>\u00a0Ethernet over Optical Fiber<\/span><\/em><\/strong>\u00a0alebo<\/span>\u00a0Fibre Channel<\/span><\/em><\/strong>\u00a0.<\/span><\/p>\n

    U\u00a0<\/span>optick\u00fdch siet\u00ed<\/span><\/em><\/strong> je situ\u00e1cia zlo\u017eitej\u0161ia, ne\u017e u metalick\u00fdch, kde sa na kr\u00fatenej dvojlinke pou\u017e\u00edva st\u00e1le rovnak\u00fd konektor. U optiky sa v minulosti objavilo ve\u013ek\u00e9 mno\u017estvo r\u00f4znych konektorov (mnoh\u00e9 z nich boli pou\u017e\u00edvan\u00e9 iba zriedka), ale najviac sa pou\u017e\u00edvaj\u00fa dva konektory <\/span>SC<\/span><\/strong>\u00a0a\u00a0<\/span>LC<\/span><\/strong>\u00a0.\u00a0Stretn\u00fa\u0165 sa m\u00f4\u017eeme e\u0161te s konektorom\u00a0 <\/span>ST<\/span><\/em><\/strong>\u00a0(Straight Tip),\u00a0<\/span>MTRJ<\/span><\/em><\/strong>\u00a0(Mechanical Transfer Registered Jack) alebo nov\u00fdm\u00a0<\/span>MPO<\/span><\/em><\/strong>\u00a0(Multi-Fiber Push On) pre Ribbon k\u00e1ble, ale tieto tu nebudeme popisova\u0165.<\/span><\/p>\n

    \"\" \u00a0 \"\"<\/p>\n

    Optick\u00e9 konektory<\/span><\/em><\/strong> zais\u0165uj\u00fa mechanick\u00e9 spojenie a zarovnanie jadra vl\u00e1kien, aby svetlo mohlo prech\u00e1dza\u0165.\u00a0 V\u00e4\u010d\u0161inou konektory vyu\u017e\u00edvaj\u00fa pru\u017einu, tak\u017ee sa plochy vl\u00e1kien pritla\u010dia tesne k sebe, aby medzi nimi nebola vzduchov\u00e1 medzera, \u010do by sp\u00f4sobovalo straty. Pripev\u0148ovanie konektora na optick\u00e9 vl\u00e1kno je tie\u017e ove\u013ea n\u00e1ro\u010dnej\u0161ia proced\u00fara a u optiky sa ove\u013ea viac prejavuj\u00fa straty a rie\u0161i sa \u00fatlm a odraz.<\/span><\/p>\n

    Pozn .:<\/em><\/strong>\u00a0Pre spojenie optick\u00fdch vl\u00e1kien sa tie\u017e pou\u017e\u00edva zv\u00e1ranie alebo mechanick\u00e9 sp\u00e1janie (Splicing).\u00a0Ide o trval\u00e9 spojenie, ktor\u00e9 m\u00e1 lep\u0161ie vlastnosti ako pou\u017eitie konektorov (ni\u017e\u0161ie straty).<\/span><\/p>\n

    \u010casti optick\u00e9ho konektora<\/span><\/h4>\n

    Optick\u00fd konektor<\/span><\/em><\/strong>\u00a0sa v\u0161eobecne sklad\u00e1 z nieko\u013ek\u00fdch \u010dast\u00ed:<\/span><\/p>\n

      \n
    • ferrula<\/span><\/em><\/strong>\u00a0– dosadacia plocha konektora, ochrann\u00fd kr\u00fa\u017eok, je vyroben\u00e1 z keramiky, kovu alebo vysoko kvalitn\u00e9ho plastu, uprostred je otvor kam sa vlo\u017e\u00ed samotn\u00e9 optick\u00e9 vl\u00e1kno, koniec vl\u00e1kna kon\u010d\u00ed s koncom ferrule a le\u0161t\u00ed sa do hladka<\/span><\/li>\n
    • telo konektora<\/span><\/em><\/strong>\u00a0– plastov\u00e1 alebo kovov\u00e1 kon\u0161trukcia okolo ferrule, spev\u0148uje napojenie na optick\u00e9 vl\u00e1kno<\/span><\/li>\n
    • kryt konektora<\/span><\/em><\/strong>\u00a0– spojen\u00e9 s telom konektora, dr\u017e\u00ed konektor na mieste pri spojen\u00ed s in\u00fdm zariaden\u00edm (zasunutie do z\u00e1suvky), obsahuje spojovac\u00ed mechanizmus<\/span><\/li>\n<\/ul>\n

      \"\"<\/p>\n

      Ferulla<\/span><\/em><\/strong> v konektore m\u00f4\u017ee ma\u0165 nieko\u013eko tvarov \u010di sp\u00f4sobov br\u00fasenia:<\/span><\/p>\n

        \n
      • Flat PC<\/span><\/strong>\u00a0–\u00a0<\/span>Flat Physical Contact<\/span><\/em><\/strong>\u00a0– rovn\u00e9 br\u00fasenie, straty 0,3 dB, odrazivos\u0165 minim\u00e1lne -30 dB<\/span><\/li>\n
      • PC<\/span><\/strong>\u00a0–\u00a0<\/span>Physical Contact<\/span><\/em><\/strong>\u00a0– \u013eahko zakriven\u00e9 br\u00fasenie, tak\u017ee sa konektormi dot\u00fdkaj\u00fa iba v centre, straty 0,3 dB, odrazivos\u0165 minim\u00e1lne -40 dB<\/span><\/li>\n
      • APC<\/span><\/strong>\u00a0–\u00a0<\/span>Angled Physical Contact<\/span><\/em><\/strong>\u00a0– \u0161ikm\u00e9 br\u00fasenie pod uhlom 8 stup\u0148ov, odrazivos\u0165 minim\u00e1lne -60 dB<\/span><\/li>\n<\/ul>\n

         <\/p>\n

        \"\"<\/p>\n

        Pozn .:<\/em><\/strong>\u00a0V transceiver sa v\u017edy pou\u017e\u00edva PC, tak\u017ee nem\u00f4\u017eeme napriamo zapoji\u0165 APC konektor, ale mus\u00edme vyu\u017ei\u0165 k\u00e1bel, ktor\u00fd m\u00e1 na jednej strane APC a na druhej PC.<\/span><\/p>\n

        Z\u00e1str\u010dka, z\u00e1suvka, patch kabel<\/span><\/h4>\n

        Optick\u00fd konektor pre optick\u00e9 vl\u00e1kno je\u00a0<\/span>z\u00e1str\u010dka<\/span><\/em><\/strong>\u00a0(plug), teda ukon\u010denie optick\u00e9ho k\u00e1bla.\u00a0Pre spojenie dvoch optick\u00fdch vl\u00e1kien m\u00f4\u017eeme pou\u017ei\u0165\u00a0<\/span>optick\u00fa spojku<\/span><\/em> (mating sleeve).\u00a0\u00a0<\/span>Z\u00e1suvka<\/span><\/em><\/strong>\u00a0(socket alebo jack) sa pou\u017e\u00edva tam, kam prip\u00e1jame optick\u00fd k\u00e1bel.\u00a0Bu\u010f m\u00f4\u017ee \u00eds\u0165 o\u00a0<\/span>rozvody<\/span><\/em><\/strong>\u00a0\u0161trukt\u00farovanej kabel\u00e1\u017ee, a teda patch panel (optick\u00e1 va\u0148a).\u00a0Alebo o pripojenie do nejak\u00e9ho\u00a0<\/span>zariadenia<\/span><\/em><\/strong>\u00a0(ako sie\u0165ov\u00e1 karta servera, port prep\u00edna\u010da), tam sa vo v\u00e4\u010d\u0161ine pr\u00edpadov nepou\u017e\u00edva priamo optick\u00fd port, ale \u0161achta pre ur\u010dit\u00fd typ\u00a0<\/span>transceivera<\/span><\/em><\/strong>\u00a0(ktor\u00fd e\u0161te len m\u00e1 z\u00e1suvku dan\u00e9ho typu).<\/span><\/p>\n

        \"\"<\/p>\n

        Optick\u00e9\u00a0<\/span>prepojovacie k\u00e1ble<\/span><\/em><\/strong> (patch k\u00e1ble) m\u00f4\u017eu ma\u0165 na ka\u017edej strane in\u00fd typ konektora. Ka\u017ed\u00fd konektor je vybaven\u00fd ur\u010dit\u00fdm typom spojovacieho mechanizmu, ako je skrutkovanie, bayonet a naj\u010dastej\u0161ie zacvaknutie (snap).<\/span><\/p>\n

        Optick\u00e9 konektory \u010dasto pou\u017e\u00edvaj\u00fa\u00a0<\/span>ur\u010dit\u00fa farbu<\/span><\/em><\/strong>\u00a0pre ur\u010denie vl\u00e1kna a Ferulle:<\/span><\/p>\n

          \n
        • b\u00e9\u017eov\u00e1<\/span><\/em><\/strong>\u00a0(Beige) \u010di<\/span>\u00a0\u0161ed\u00e1<\/span><\/em><\/strong> (Grey) – naj\u010dastej\u0161ie konektor, multimode fiber, Ferrula PC<\/span><\/li>\n
        • modr\u00e1<\/span><\/em><\/strong> (Blue) – singlemode fiber, Ferrula PC<\/span><\/li>\n
        • zelen\u00e1<\/span><\/em><\/strong> (Green) – Ferrula APC<\/span><\/li>\n<\/ul>\n

          Konektor SC – Subscriber Connector<\/span><\/h4>\n

          Tie\u017e sa ozna\u010duje ako\u00a0<\/span>Standard Connector<\/span><\/em>\u00a0alebo\u00a0<\/span>Square Connector<\/span><\/em>\u00a0.\u00a0Ve\u013ekos\u0165 Ferrule je 2,5 mm.\u00a0Pou\u017e\u00edva sa na transceiver GBIC, XENPAK, X2, CFP, CPAK.\u00a0Pred rokmi zna\u010dne popul\u00e1rny konektor pre gigabitov\u00e9 aj 10 gigabitov\u00e9 r\u00fdchlosti.<\/span><\/p>\n

          \"\" \"\"<\/p>\n

          Konektor LC – Lucent Connector<\/span><\/h4>\n

          Moment\u00e1lne asi najpou\u017e\u00edvanej\u0161\u00ed typ konektora, ozna\u010duje sa tie\u017e\u00a0<\/span>Little Connector<\/span><\/em>.\u00a0Ide o zmen\u0161en\u00fa verziu SC konektora, Ferrula m\u00e1 priemer 1,25 mm. U duplexn\u00e9ho k\u00e1bla je kryt konektora spojen\u00fd pre obe vl\u00e1kna, tak\u017ee sa zap\u00e1ja naraz.\u00a0Pou\u017e\u00edva sa na transceiver SFP, SFP +, XFP, QSFP +, tak\u017ee pre v\u0161etky aktu\u00e1lne r\u00fdchlosti Ethernetu aj Fibre Channel.<\/span><\/p>\n

          \"\" \"\"<\/p>\n

          Transceivery (prevodn\u00edky)<\/span><\/h3>\n

          Term\u00edn\u00a0<\/span>Transceiver<\/span><\/strong>\u00a0vznikol zlo\u017een\u00edm slov\u00a0<\/span>Transmitter<\/span><\/em><\/strong>\u00a0(vysiela\u010d) a\u00a0<\/span>Receiver<\/span><\/em><\/strong>\u00a0(prij\u00edma\u010d).\u00a0V dne\u0161nej dobe sa jedn\u00e1 o kompaktn\u00e9\u00a0<\/span>moduly<\/span><\/em><\/strong>, ktor\u00e9 sl\u00fa\u017eia k prevodu sign\u00e1lov (medzi z\u00e1kladnou doskou sie\u0165ov\u00e9ho zariadenia a sie\u0165ov\u00fdm k\u00e1blom).\u00a0S\u00fa nap\u00e1jan\u00e9 zo zariadenia, m\u00f4\u017eeme ich za behu prip\u00e1ja\u0165 a odp\u00e1ja\u0165, pou\u017e\u00edvaj\u00fa sa pre telekomunika\u010dn\u00e9 i d\u00e1tov\u00e9 siete.\u00a0Existuje rad v\u00fdrobcom \u0161pecifikovan\u00fdch (Multi-Source Agreement – MSA) typov <\/span>transceiverov<\/span><\/em>, kedy sa dnes preva\u017ene pou\u017e\u00edvaj\u00fa\u00a0<\/span>SFP<\/span><\/strong>\u00a0,\u00a0<\/span>SFP +<\/span><\/strong>\u00a0a\u00a0<\/span>QSFP +<\/span><\/strong>.<\/span><\/p>\n

          \"\"<\/p>\n

          Princ\u00edp a v\u00fdhoda\u00a0<\/span>transceiverov<\/span><\/em><\/strong> je v tom, \u017ee v zariaden\u00ed (prep\u00edna\u010d, smerova\u010d, sie\u0165ov\u00e1 karta, a pod.) sa nach\u00e1dza iba <\/span>\u0161achta<\/span><\/em><\/strong>\u00a0(socket) pre ur\u010dit\u00fd typ\u00a0<\/span>transceivera<\/span><\/em>.\u00a0Tie sa vyr\u00e1baj\u00fa s r\u00f4znym <\/span>konektorom<\/span><\/em><\/strong>\u00a0(napr\u00edklad metalick\u00fd RJ45 alebo optick\u00fd LC), r\u00f4znym\u00a0<\/span>\u0161tandardom<\/span><\/em><\/strong>\u00a0ur\u010duj\u00facim r\u00fdchlos\u0165 (napr\u00edklad 1000Base-T Ethernet, 10GBase-SR Ethernet, 8G Fibre Channel) a r\u00f4znym\u00a0<\/span>princ\u00edpom vysielania a pr\u00edjmu<\/span><\/em><\/strong>(v\u00fdkon, metalika, optick\u00e9 vl\u00e1kna Single mode alebo Multi mode, r\u00f4zna vlnov\u00e1 d\u013a\u017eka, Short Range \u010di Long Range, FC Longwave alebo Shortwave, apod). V\u010faka tomu m\u00f4\u017eeme napr\u00edklad do prep\u00edna\u010da prip\u00e1ja\u0165 na jednotliv\u00e9 porty r\u00f4zne typy m\u00e9di\u00ed. Zni\u017euje sa cena z\u00e1kladn\u00e9ho syst\u00e9mu (ale celkov\u00e1 cena narast\u00e1, preto\u017ee v\u00e4\u010d\u0161ina typov transceiverov nie je lacn\u00e1, ale m\u00f4\u017eeme vyu\u017ei\u0165 Twinax k\u00e1ble) a z\u00edskava sa flexibilita.<\/span><\/p>\n

          \"\" \u00a0\"\"\u00a0\u00a0\"\"<\/p>\n

          Pozn .:<\/em><\/strong>\u00a0V praxi b\u00fdva probl\u00e9m, \u017ee v\u00fdrobcovia ofici\u00e1lne podporuj\u00fa iba svoje vlastn\u00e9 Transceivery, aj ke\u010f in\u00e9 \u010dasto funguj\u00fa, tak sa m\u00f4\u017eu objavi\u0165 probl\u00e9my.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

          Sie\u0165ov\u00e9 konektory Siete s metalickou kabel\u00e1\u017eou\u00a0(kr\u00faten\u00e1 dvojlinka – Twisted Pair) s\u00fa dnes zalo\u017een\u00e9 na technol\u00f3gii\u00a0Ethernet\u00a0a m\u00f4\u017eu by\u0165 ur\u010den\u00e9 ako pre\u00a0telekomunika\u010dn\u00e9 siete\u00a0(napr\u00edklad LAN), tak pre\u00a0d\u00e1tov\u00e9 siete\u00a0(Storage,…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":14,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/pages\/666"}],"collection":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/comments?post=666"}],"version-history":[{"count":1,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/pages\/666\/revisions"}],"predecessor-version":[{"id":683,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/pages\/666\/revisions\/683"}],"up":[{"embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/pages\/14"}],"wp:attachment":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/media?parent=666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}