{"id":11143,"date":"2025-09-15T11:21:28","date_gmt":"2025-09-15T11:21:28","guid":{"rendered":"https:\/\/csiag.eu\/?p=11143"},"modified":"2025-09-15T11:31:02","modified_gmt":"2025-09-15T11:31:02","slug":"prepinace-a-kabelaz-sitove-technologie","status":"publish","type":"post","link":"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/","title":{"rendered":"S\u00ed\u0165ov\u00e9 technologie - p\u0159ep\u00edna\u010de a kabel\u00e1\u017e"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Netzwerk-Kabel\" >S\u00ed\u0165ov\u00fd kabel<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Abschirmung\" >St\u00edn\u011bn\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Klassifizierung_CAT\" >Klasifikace (CAT)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Glasfaser_vs_Kupfer\" >Optick\u00e1 vl\u00e1kna vs. m\u011b\u010f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Preisfrage\" >Cenov\u00e1 ot\u00e1zka<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Hub_vs_Switch\" >Rozbo\u010dova\u010d vs. p\u0159ep\u00edna\u010d<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Hub\" >Mrtvice<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Switch\" >P\u0159ep\u00edna\u010d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Ports\" >Porty<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Switches_%E2%80%93_unmanaged\" >P\u0159ep\u00edna\u010de - (ne)\u0159\u00edzen\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Hersteller_von_Switches\" >V\u00fdrobce sp\u00edna\u010d\u016f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Cisco\" >Cisco<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/#Ubiquiti\" >Ubiquiti<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Doba \u010dten\u00ed<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minuty<\/span><\/span>\n<p class=\"wp-block-paragraph\">P\u0159ep\u00edna\u010de a kabel\u00e1\u017e hraj\u00ed v s\u00ed\u0165ov\u00e9 technologii \u00fast\u0159edn\u00ed roli. N\u00ed\u017ee jsou pops\u00e1ny rozd\u00edly a krit\u00e9ria v\u00fdb\u011bru, kter\u00e1 je t\u0159eba zv\u00e1\u017eit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Netzwerk-Kabel\"><\/span>S\u00ed\u0165ov\u00fd kabel<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Abschirmung\"><\/span>St\u00edn\u011bn\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u00ed\u0165ov\u00e9 kabely jsou navr\u017eeny jako 4p\u00e1rov\u00e9 kroucen\u00e1 jednoduch\u00e9 kabely se spole\u010dn\u00fdm m\u011bd\u011bn\u00fdm opleten\u00edm pro odst\u00edn\u011bn\u00ed vn\u011bj\u0161\u00edch ru\u0161iv\u00fdch pol\u00ed (S\/FTP - <em><strong>S<\/strong>creened <strong>F<\/strong>naolejovan\u00e9 <strong>T<\/strong>wisted <strong>P<\/strong>vzduch<\/em>). Zkroucen\u00ed eliminuje interferen\u010dn\u00ed pole, kter\u00e1 se vyskytuj\u00ed uvnit\u0159.<br>Kabely s jednotliv\u00fdmi p\u00e1ry vodi\u010d\u016f dodate\u010dn\u011b st\u00edn\u011bn\u00fdmi opleten\u00edm se ozna\u010duj\u00ed jako kabely S\/STP (<em><strong>S<\/strong>creened <strong>S<\/strong>hielded <strong>T<\/strong>wisted<strong> P<\/strong>vzduch<\/em>). <br>Pro kabely FTP (<em><em><strong>F<\/strong>naolejovan\u00e9 <strong>T<\/strong>wisted <strong>P<\/strong>vzduch<\/em><\/em>) se m\u00edsto m\u011bd\u011bn\u00e9ho opleten\u00ed pou\u017e\u00edv\u00e1 f\u00f3lie pota\u017een\u00e1 hlin\u00edkem.<br>Jako zemnic\u00ed vodi\u010d slou\u017e\u00ed ve v\u0161ech variant\u00e1ch tzv. vypou\u0161t\u011bc\u00ed vodi\u010d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kabely UTP (<em><strong>U<\/strong>st\u00edn\u011bn\u00e9 <strong>T<\/strong>wisted <strong>P<\/strong>vzduch<\/em>), kter\u00e9 nemaj\u00ed \u017e\u00e1dn\u00e9 st\u00edn\u011bn\u00ed, a proto nemaj\u00ed dvouvodi\u010dov\u00e9 p\u0159ipojen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Klassifizierung_CAT\"><\/span>Klasifikace (CAT)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kategorie CAT1 a\u017e CAT6(A) nejsou zahrnuty, proto\u017ee ji\u017e nespl\u0148uj\u00ed dne\u0161n\u00ed po\u017eadavky na \u0161\u00ed\u0159ku p\u00e1sma, pokud je po\u017eadov\u00e1n Ethernet 10 Gbit\/s nebo vy\u0161\u0161\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u00e1ry vodi\u010d\u016f CAT7 jsou samostatn\u011b st\u00edn\u011bn\u00e9. Spl\u0148uj\u00ed po\u017eadavky <a href=\"https:\/\/de.wikipedia.org\/wiki\/IEEE_802.3an\" target=\"_blank\" rel=\"noopener\">IEEE 802.3an<\/a>lze pou\u017e\u00edt a\u017e do frekvence 600 MHz, CAT7A a\u017e do 1000 MHz a rychlosti p\u0159enosu dat a\u017e 10 Gbit\/s v aplikac\u00edch 10GBASE-T.<br>Maxim\u00e1ln\u00ed d\u00e9lka kabelu je 100 m p\u0159i jmenovit\u00e9 p\u0159enosov\u00e9 rychlosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nejvy\u0161\u0161\u00ed p\u0159enosov\u00e9 rychlosti v sou\u010dasnosti dosahuj\u00ed kabely kategorie CAT8.2, kter\u00e9 maj\u00ed \u0161\u00ed\u0159ku p\u00e1sma 2 Gbit\/s a p\u0159enosovou rychlost 40 Gbit\/s pro aplikace 25 GBASE-T, resp. 40 GBASE-T.<br>U 40GBASE-T je d\u00e9lka kabelu omezena na 30 m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Glasfaser_vs_Kupfer\"><\/span>Optick\u00e1 vl\u00e1kna vs. m\u011b\u010f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdkon m\u011bd\u011bn\u00fdch kabel\u016f, zejm\u00e9na CAT8, je nyn\u00ed srovnateln\u00fd s optick\u00fdmi vl\u00e1kny. Nicm\u00e9n\u011b existuje jeden rozd\u00edl, kter\u00fd lze realizovat pouze s m\u011bd\u011bn\u00fdmi kabely, a to PoE (<em><strong>P<\/strong>ower <strong>o<\/strong>ver <strong>E<\/strong>thernet<\/em>), nap\u00e1jen\u00ed spot\u0159ebi\u010d\u016f, jako jsou kamery, p\u0159es ethernetov\u00fd kabel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud nen\u00ed vy\u017eadov\u00e1no PoE, p\u0159ech\u00e1z\u00ed se k optick\u00fdm vl\u00e1kn\u016fm, i kdy\u017e manipulace s nimi, nap\u0159\u00edklad mont\u00e1\u017e z\u00e1suvn\u00fdch spoj\u016f, je mnohem slo\u017eit\u011bj\u0161\u00ed a vy\u017eaduje speci\u00e1ln\u00ed n\u00e1\u0159ad\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preisfrage\"><\/span>Cenov\u00e1 ot\u00e1zka<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cenov\u00fd rozd\u00edl mezi CAT7(A) a CAT8(.1\/.2) je u 10% zanedbateln\u00fd. M\u016f\u017eete po\u010d\u00edtat s \u010d\u00e1stkou kolem 10 eur za 3m CAT7 a kolem 11 eur za CAT8.1.<br>Je v\u0161ak d\u016fle\u017eit\u00e9 m\u00edt na pam\u011bti, \u017ee po\u017eadavky na klasifikaci mus\u00ed spl\u0148ovat i infrastruktura, nap\u0159\u00edklad p\u0159ep\u00edna\u010de, pokud nemaj\u00ed b\u00fdt \u00fazk\u00fdm m\u00edstem v toku dat.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hub_vs_Switch\"><\/span>Rozbo\u010dova\u010d vs. p\u0159ep\u00edna\u010d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Rozbo\u010dova\u010de a p\u0159ep\u00edna\u010de slou\u017e\u00ed k distribuci p\u0159\u00edchoz\u00edho datov\u00e9ho toku, nap\u0159. ze sm\u011brova\u010de, prost\u0159ednictv\u00edm dostupn\u00fdch portov\u00fdch p\u0159ipojen\u00ed ke koncov\u00fdm za\u0159\u00edzen\u00edm, jako jsou po\u010d\u00edta\u010de, tisk\u00e1rny, skenery, kamery nebo jin\u00e1 s\u00ed\u0165ov\u00e1 za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hub\"><\/span>Mrtvice<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rozbo\u010dova\u010d rozd\u011bluje p\u0159\u00edchoz\u00ed datov\u00fd tok rovnom\u011brn\u011b na v\u0161echny porty. P\u0159ipojen\u00ed \u00fa\u010dastn\u00edci p\u0159ij\u00edmaj\u00ed datov\u00fd proud.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Switch\"><\/span>P\u0159ep\u00edna\u010d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159ep\u00edna\u010d analyzuje z\u00e1hlav\u00ed p\u0159ijat\u00e9ho datov\u00e9ho toku. Rozpoznan\u00e1 adresa MAC ur\u010duje c\u00edlov\u00e9 za\u0159\u00edzen\u00ed. Pokud nen\u00ed adresa MAC rozpozn\u00e1na, ode\u0161le datov\u00fd paket na v\u0161echny porty. Jakmile p\u0159\u00edslu\u0161n\u00e9 c\u00edlov\u00e9 za\u0159\u00edzen\u00ed odpov\u00ed, p\u0159ed\u00e1 svou adresu MAC, kterou p\u0159ep\u00edna\u010d n\u00e1sledn\u011b zap\u00ed\u0161e do sv\u00e9 pam\u011bti CAM (<em><strong>C<\/strong>ontent <strong>A<\/strong>obl\u00e9kac\u00ed <strong>M<\/strong>emory<\/em>), tak\u00e9 tabulka SAT (<em><strong>S<\/strong>ource-<strong>A<\/strong>\u0161aty -<strong>T<\/strong>schopen<\/em>). To znamen\u00e1, \u017ee pakety mohou b\u00fdt okam\u017eit\u011b p\u0159ed\u00e1ny na spr\u00e1vnou c\u00edlovou adresu bez jak\u00fdchkoli oklik pomoc\u00ed adresy MAC.<br>P\u0159\u00edm\u00e9 p\u0159i\u0159azen\u00ed prost\u0159ednictv\u00edm adresy MAC zabra\u0148uje koliz\u00edm mezi datov\u00fdmi pakety a umo\u017e\u0148uje pln\u011b duplexn\u00ed komunikaci, co\u017e optimalizuje datovou propustnost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159ep\u00edna\u010de mohou tak\u00e9 vytv\u00e1\u0159et virtu\u00e1ln\u00ed s\u00edt\u011b LAN (<em>VLAN<\/em>) a rozd\u011blit datov\u00fd provoz do r\u016fzn\u00fdch logick\u00fdch s\u00edt\u00ed a zpracov\u00e1vat je tak odd\u011blen\u011b od sebe.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ports\"><\/span>Porty<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Po\u010det port\u016f je variabiln\u00ed, od 4, 8, 16, 24 a\u017e po 48 port\u016f, v\u0161e je k dispozici na trhu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Proto byste si m\u011bli nejprve poznamenat v\u0161echna za\u0159\u00edzen\u00ed, kter\u00e1 maj\u00ed b\u00fdt p\u0159ipojena k p\u0159ep\u00edna\u010di prost\u0159ednictv\u00edm s\u00edt\u011b LAN.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U koncov\u00fdch za\u0159\u00edzen\u00ed, kter\u00e1 maj\u00ed b\u00fdt nap\u00e1jena prost\u0159ednictv\u00edm PoE, je t\u0159eba zohlednit spot\u0159ebu energie. Sou\u010det v\u0161ech port\u016f PoE toti\u017e ur\u010duje po\u017eadovan\u00fd celkov\u00fd v\u00fdkon nap\u00e1jen\u00ed p\u0159ep\u00edna\u010de - a tedy i cenu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nap\u0159\u00edklad 16portov\u00fd p\u0159ep\u00edna\u010d m\u016f\u017ee m\u00edt 12 port\u016f bez PoE a 4 porty PoE. Je proto d\u016fle\u017eit\u00e9 zkontrolovat, kolik port\u016f PoE je skute\u010dn\u011b k dispozici - a s jak\u00fdm v\u00fdkonem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vzhledem k obvykle rostouc\u00ed s\u00ed\u0165ov\u00e9 infrastruktu\u0159e je t\u0159eba po\u010d\u00edtat s ur\u010ditou rezervou v po\u010dtu port\u016f a port\u016f PoE.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Switches_%E2%80%93_unmanaged\"><\/span>P\u0159ep\u00edna\u010de - (ne)\u0159\u00edzen\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O trh se d\u011bl\u00ed mnoho v\u00fdrobc\u016f. Podle m\u00e9ho n\u00e1zoru je v\u017edy vhodn\u00e9 zvolit v\u00fdrobce, kter\u00fd p\u016fsob\u00ed v obchodn\u00edm sektoru, a m\u00e1 tedy v tomto segmentu trhu solidn\u00ed zku\u0161enosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Je t\u0159eba rozli\u0161ovat mezi tzv. <em>spravovan\u00e9<\/em> a <em>ne\u0159\u00edzen\u00e9<\/em> P\u0159ep\u00edna\u010de. Pouze <em>spravovan\u00e9<\/em> P\u0159ep\u00edna\u010de jsou konfigurovateln\u00e9. I kdy\u017e je konfigurovatelnost pro jednotliv\u00e9ho u\u017eivatele na za\u010d\u00e1tku z\u0159\u00eddka d\u016fle\u017eit\u00e1, jak tomu v \u017eivot\u011b obvykle b\u00fdv\u00e1, \u010dasem se po\u017eadavky zvy\u0161uj\u00ed a pot\u0159eba mo\u017enosti konfigurace se st\u00e1v\u00e1 p\u0159edv\u00eddatelnou.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jednoduchost konfigurace se sni\u017euje s rostouc\u00ed profesionalitou a s t\u00edm souvisej\u00edc\u00edm n\u00e1r\u016fstem administrativn\u00ed slo\u017eitosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159ep\u00edna\u010d v\u0161ak v\u017edy \"funguje\" v z\u00e1kladn\u00ed tov\u00e1rn\u00ed konfiguraci. To znamen\u00e1, \u017ee - prozat\u00edm - nen\u00ed nutn\u00e9 \u017e\u00e1dn\u00e9 \u00fasil\u00ed o konfiguraci, i kdy\u017e je voliteln\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V tomto ohledu se lze nyn\u00ed spolehnout na <em>spravovan\u00e9<\/em> p\u0159ep\u00edna\u010de.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hersteller_von_Switches\"><\/span>V\u00fdrobce sp\u00edna\u010d\u016f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Podle m\u00e9ho n\u00e1zoru se ag\u00f3nie v\u00fdb\u011bru omezuje na dva v\u00fdrobce. Ka\u017ed\u00fd, kdo m\u00e1 n\u00e1klonnost ke spole\u010dnosti Cisco, si ji bez debat vybere. Ka\u017ed\u00fd, kdo je\u0161t\u011b nen\u00ed zaujat\u00fd, nem\u00e1 k dispozici nekone\u010dn\u00fd rozpo\u010det a nen\u00ed profesion\u00e1lem v oboru, pokud jde o s\u00edt\u011b, se nau\u010d\u00ed oce\u0148ovat Ubiquiti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oba v\u00fdrobci maj\u00ed spole\u010dn\u00e9 to, \u017ee v\u011bt\u0161\u00ed p\u0159ep\u00edna\u010de (v n\u011bkter\u00fdch p\u0159\u00edpadech od 8 nebo 16 port\u016f) zpravidla poskytuj\u00ed porty uplink (SFP\/SFP+ s rychlost\u00ed 16 Gbit\/s nebo Enhanced Quad-Small Form-factor Pluggable s rychlost\u00ed 40 Gbit\/s (QSFP+)) pomoc\u00ed optick\u00fdch vl\u00e1ken, obvykle 2 nebo 4.<br>QSFP-DD (Double Density) podporuje rychlosti a\u017e 56 GBit\/s a 400 Gbit\/s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Maxim\u00e1ln\u00ed d\u00e9lka kabelu pro uplink porty podle v\u00fd\u0161e uveden\u00fdch norem je 550 m (multimode) nebo 10 km (singlemode LX), nebo 40 km (singlemode EX) a 80 km (singlemode ZX), v z\u00e1vislosti na typu vl\u00e1kna. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Moduly CWDM a DWDM umo\u017e\u0148uj\u00ed p\u0159enos na vzd\u00e1lenost a\u017e 80 nebo 120 km, pokud je k dispozici odpov\u00eddaj\u00edc\u00ed p\u0159enosov\u00fd v\u00fdkon a citlivost p\u0159\u00edjmu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cisco\"><\/span>Cisco<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Spole\u010dnost Cisco je pravd\u011bpodobn\u011b nejzn\u00e1m\u011bj\u0161\u00edm v\u00fdrobcem. Neprofesion\u00e1ln\u00ed u\u017eivatele \u010dasto odrazuje administrace, kter\u00e1 pokr\u00fdv\u00e1 t\u00e9m\u011b\u0159 v\u0161echny mo\u017enosti, a je proto velmi slo\u017eit\u00e1. V profesion\u00e1ln\u00edm prost\u0159ed\u00ed je Cisco nepostradateln\u00e9 a p\u0159edstavuje kvazi standard.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SG a CBS (<em>P\u0159ep\u00edna\u010d Cisco Business Switch<\/em>) slou\u017e\u00ed soukrom\u00fdm u\u017eivatel\u016fm, jako jsou mal\u00e9 a st\u0159edn\u00ed podniky, Cisco Catalyst je ur\u010den pro pr\u016fmyslov\u00e9 u\u017eivatele a Cisco Nexus pro s\u00ed\u0165ov\u00e9 struktury, kter\u00e9 vy\u017eaduj\u00ed vysokou \u0161k\u00e1lovatelnost a odpov\u00eddaj\u00edc\u00ed v\u00fdkon.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ubiquiti\"><\/span>Ubiquiti<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ubiquiti je v\u00fdrobce p\u016fvodn\u011b p\u016fsob\u00edc\u00ed v profesion\u00e1ln\u00edm sektoru, a to nejen p\u0159ep\u00edna\u010d\u016f, ale tak\u00e9 komponent WLAN a radiorel\u00e9ov\u00fdch za\u0159\u00edzen\u00ed, kter\u00fd nab\u00edz\u00ed spot\u0159ebitelsk\u00fd sortiment s profesion\u00e1ln\u00edmi technologiemi z podnikov\u00e9ho sektoru za dostupn\u00e9 ceny.<br>Vyzna\u010duje se tak\u00e9 nep\u0159etr\u017eitou online podporou RealTime, kterou lze vyvolat z grafick\u00e9ho rozhran\u00ed \u0159\u00eddic\u00ed jednotky a ke kter\u00e9 se lze p\u0159ipojit i vzd\u00e1len\u011b. Z\u00e1znamy relac\u00ed jsou zaznamen\u00e1v\u00e1ny a na konci relace jsou k dispozici prost\u0159ednictv\u00edm e-mailu. D\u00edky tomu je mo\u017en\u00e9 n\u00e1sledn\u011b podrobn\u011b sledovat jednotliv\u00e9 kroky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UniFi a Edge jsou divize nab\u00edzen\u00e9 spole\u010dnost\u00ed Ubiquiti pro spot\u0159ebitelsk\u00fd a podnikov\u00fd trh. V\u00fdhodou obou \u0159ad je komplexn\u00ed vizualizace cel\u00e9 s\u00edt\u011b a centr\u00e1ln\u00ed specializovan\u00e1 spr\u00e1va prost\u0159ednictv\u00edm UniFi CloudKey Controller nebo UniFi DreamMachine (UDM), zejm\u00e9na ve spojen\u00ed s kamerov\u00fdm syst\u00e9mem UniFi (UniFi Protect) nebo UniFi DreamRouter (UDR).<br>V\u0161echny varianty Pro nebo Enterprise podporuj\u00ed roz\u0161\u00ed\u0159en\u00e9 funkce 3. vrstvy, nap\u0159\u00edklad VLAN.<\/p>","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Doba \u010dten\u00ed<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minuty<\/span><\/span>In der Netzwerktechnik nehmen Switches und die Verkabelung zentrale Funktionen ein. Was zu beachtende Unterschiede und Auswahlkriterien betrifft, soll nachfolgend er\u00f6rtert werden. Netzwerk-Kabel Abschirmung Netzwerkkabel sind als 4-paarig verdrillte Einzelkabel mit gemeinsamem Kupfer-Geflecht zur Abschirmung externer St\u00f6rfelder ausgef\u00fchrt (S\/FTP &#8211; Screened Foiled Twisted Pair). Die Verdrillung eliminiert intern auftretende St\u00f6rfelder.Kabel mit einzeln zus\u00e4tzlich mit Geflecht&hellip;&nbsp;<a href=\"https:\/\/csiag.eu\/cs\/blog\/2025\/09\/15\/netzwerktechnik-switches-und-verkabelung\/\" rel=\"bookmark\">\u010c\u00edst d\u00e1le \"<span class=\"screen-reader-text\">S\u00ed\u0165ov\u00e9 technologie - p\u0159ep\u00edna\u010de a kabel\u00e1\u017e<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[2553],"tags":[],"class_list":["post-11143","post","type-post","status-publish","format-standard","hentry","category-netzwerk-technik"],"modified_by":"Achim Goerner","_links":{"self":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/posts\/11143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/comments?post=11143"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/posts\/11143\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/media?parent=11143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/categories?post=11143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/tags?post=11143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}