{"id":71069,"date":"2020-02-23T22:07:58","date_gmt":"2020-02-23T19:07:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/chetvertushka-ethernet-a-staraya-skorost-novye-vozmozhnosti"},"modified":"2020-03-03T16:14:34","modified_gmt":"2020-03-03T13:14:34","slug":"chetvertushka-ethernet-a-staraya-skorost-novye-vozmozhnosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/administrirovanie\/chetvertushka-ethernet-a-staraya-skorost-novye-vozmozhnosti","title":{"rendered":"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/d10d96c9523f873599b9e858dfb50ce7.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nDen 5 februari i \u00e5r godk\u00e4ndes en ny standard f\u00f6r 10-megabit Ethernet. Ja, du l\u00e4ste r\u00e4tt: tio megabit per sekund.<\/p>\n<p>Vad beh\u00f6vs en s\u00e5 \"liten\" hastighet f\u00f6r i 21:a seklet? F\u00f6r att ers\u00e4tta den djungel som d\u00f6ljer sig under det betungande namnet \"f\u00e4lldatabuss\" \u2014 Profibus, Modbus, CC-Link, CAN, FlexRay, HART, etc. Det finns alldeles f\u00f6r m\u00e5nga, de \u00e4r inkompatibla med varandra och relativt sv\u00e5ra att konfigurera. Man vill helt enkelt bara koppla in en kabel till switchen, och that's it. Precis som med vanlig Ethernet.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nOch snart kommer det att bli m\u00f6jligt! L\u00e5t oss presentera: \"802.3cg-2019 \u2014 IEEE Standard for Ethernet \u2014 Amendment 5: Physical Layer Specifications and Management Parameters for 10 Mb\/s Operation and Associated Power Delivery over a Single Balanced Pair of Conductors.\" <\/p>\n<p>Vad \u00e4r det som g\u00f6r denna nya Ethernet s\u00e5 intressant? Framf\u00f6rallt fungerar den \u00f6ver ett enda tvinnat par, och inte \u00f6ver fyra. Det inneb\u00e4r att den har f\u00e4rre kontakter och tunnare kablar. Man kan \u00e4ven anv\u00e4nda redan installerade tvinnade par som g\u00e5r till sensorer och aktuatorer.<\/p>\n<p>Du kan inv\u00e4nda att Ethernet fungerar upp till 100 meter, men sensorerna \u00e4r placerade mycket l\u00e4ngre bort. Det var faktiskt ett problem tidigare. Men 802.3cg fungerar p\u00e5 avst\u00e5nd upp till 1 km! \u00d6ver ett par! Inte illa va? <\/p>\n<p>Faktiskt \u00e4r det \u00e4nnu b\u00e4ttre: \u00f6ver samma par kan ocks\u00e5 str\u00f6m levereras. Det \u00e4r d\u00e4r vi b\u00f6rjar.<\/p>\n<h3>IEEE 802.3bu Power over Data Lines (PoDL)<\/h3>\n<p>\nJag tror att m\u00e5nga av er har h\u00f6rt talas om PoE (Power over Ethernet) och vet att tv\u00e5 par ledningar kr\u00e4vs f\u00f6r att \u00f6verf\u00f6ra str\u00f6m. Ing\u00e5ng\/utg\u00e5ng av str\u00f6m g\u00f6rs i mittpunkterna av transformatorerna f\u00f6r varje par. Att g\u00f6ra detta med ett enda par \u00e4r om\u00f6jligt. D\u00e4rf\u00f6r var vi tvungna att g\u00f6ra p\u00e5 ett annat s\u00e4tt. Hur exakt beskrivs i bilden nedan. F\u00f6r exempel har \u00e4ven klassisk PoE lagts till.<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/bb89378da53efb0a9bbf0a9edf583155.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nH\u00e4r:<br \/>\nPSE \u2013 power sourcing equipment (str\u00f6mf\u00f6rs\u00f6rjningsutrustning)<br \/>\nPD \u2013 powered device (enhet i den andra \u00e4nden som anv\u00e4nder elektricitet)<\/p>\n<p>Ursprungligen hade 802.3bu 10 klasser av str\u00f6mf\u00f6rs\u00f6rjning:<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/5d089748498a37f5ae75cc0b8629dc42.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTre villkorsfulla sp\u00e4nningsgraderingar av str\u00f6mk\u00e4llan markeras med f\u00e4rg: 12, 24 och 48 V.<\/p>\n<p>Beteckningar:<br \/>\nVpse \u2014 str\u00f6mk\u00e4llans sp\u00e4nning, V<br \/>\nVpd min \u2014 minimi sp\u00e4nning p\u00e5 PD, V<br \/>\nI max \u2014 maximal str\u00f6m i linjen, A<br \/>\nPpd max \u2014 maximal effekt som PD drar, W<\/p>\n<p>Med protokollet 802.3cg tillkom ytterligare 6 klasser:<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/cb2677254d132ad27c4daf06489795ea.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNaturligtvis m\u00e5ste PSE och PD samordna effektklassningen innan full sp\u00e4nning tillf\u00f6rs. Detta g\u00f6rs med hj\u00e4lp av SCCP (Serial Communications Classification Protocol). Det \u00e4r ett l\u00e5ghastighetsprotokoll (333 bit\/s) baserat p\u00e5 1-Wire. Det fungerar endast n\u00e4r det inte finns n\u00e5gon huvudsaklig str\u00f6mf\u00f6rs\u00f6rjning p\u00e5 linjen (inklusive i vilol\u00e4ge).<\/p>\n<p>I blockdiagrammet visas hur str\u00f6mf\u00f6rs\u00f6rjningen tillf\u00f6rs:<\/p>\n<ul>\n<li>en str\u00f6m p\u00e5 10 mA tillf\u00f6rs och f\u00f6rekomsten av en 4 V zenerdiod p\u00e5 andra \u00e4nden kontrolleras<\/li>\n<li>effektklassningen samordnas<\/li>\n<li>huvudstr\u00f6mf\u00f6rs\u00f6rjningen tillf\u00f6rs<\/li>\n<li>om f\u00f6rbrukningen faller under 10 mA \u2013 aktiveras vilol\u00e4get (tillf\u00f6rsel av standby-str\u00f6m p\u00e5 3.3 V)<\/li>\n<li>om f\u00f6rbrukningen \u00f6verskrider 1 mA \u2013 sker en uttr\u00e4de ur vilol\u00e4get<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/ac282970ea69804211da01c9c6a384b8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nEffektklassningen beh\u00f6ver inte g\u00f6ras om den redan \u00e4r k\u00e4nd. Denna variant kallas Fast Startup Mode. Den anv\u00e4nds till exempel i bilar, eftersom det inte finns n\u00e5got behov av att \u00e4ndra konfigurationen av den anslutna utrustningen.<\/p>\n<p>\u00d6verg\u00e5ngen till vilol\u00e4ge kan initieras av b\u00e5de PSE och PD.<\/p>\n<p>Nu g\u00e5r vi vidare till beskrivningen av data\u00f6verf\u00f6ring. D\u00e4r \u00e4r det ocks\u00e5 intressant: standarden definierar tv\u00e5 arbetsl\u00e4gen \u2013 l\u00e5ngdistans och kortdistans. <\/p>\n<h3>10BASE-T1L<\/h3>\n<p>\nDetta \u00e4r en variant f\u00f6r l\u00e5ng r\u00e4ckvidd (long reach). Huvudegenskaperna \u00e4r f\u00f6ljande:<\/p>\n<ul>\n<li>r\u00e4ckvidd \u2013 upp till 1 km<\/li>\n<li>ledningar 18AWG (0.8 mm\u00b2)<\/li>\n<li>upp till 10 mellanliggande anslutningar (och tv\u00e5 \u00e4ndanslutningar)<\/li>\n<li>punkt-till-punkt-l\u00e4ge<\/li>\n<li>full duplex<\/li>\n<li>symbolhastighet 7.5 Mbaud<\/li>\n<li>modulering PAM-3, kodning 4B3T<\/li>\n<li>signal med amplitud 1 V (1 Vpp) eller 2.4 V<\/li>\n<li>st\u00f6d f\u00f6r Energy Efficient Ethernet (\u201cquiet\/refresh\u201d EEE)<\/li>\n<\/ul>\n<p>\nDet \u00e4r uppenbart att denna variant \u00e4r avsedd f\u00f6r industriell anv\u00e4ndning, \u00e5tkomstkontrollsystem, fastighetsautomation, hissar. F\u00f6r att styra chillers, luftkonditioneringar och fl\u00e4ktar som \u00e4r placerade p\u00e5 taket. Eller v\u00e4rmepannor och pumpar som finns i tekniska utrymmen. Det vill s\u00e4ga, m\u00e5nga olika till\u00e4mpningar ut\u00f6ver industrin. F\u00f6r att inte tala om Internet of Things (IoT).<\/p>\n<p>Det \u00e4r v\u00e4rt att n\u00e4mna att 10BASE-T1 bara \u00e4r en av standarderna f\u00f6r Single Pair Ethernet (SPE). Det finns \u00e4ven 100BASE-T1 (802.3bw) och 1000BASE-T1 (802.3bp). Sanningen \u00e4r att de utvecklades f\u00f6r fordonsapplikationer, s\u00e5 d\u00e4r \u00e4r r\u00e4ckvidden bara 15 (UTP) eller 40 meter (STP). Men det finns planer f\u00f6r en l\u00e5ngdistansversion av 100BASE-T1L. S\u00e5 i framtiden kommer autotuning av hastighet att l\u00e4ggas till. <\/p>\n<p>Under the current agreement, a 'quick start' interface is declared: less than 100ms from power-on to the beginning of data exchange.<\/p>\n<p>Another optional feature is the increase of transmission amplitude from 1 to 2.4V to improve the signal\/noise ratio, reduce errors, and counteract industrial interference.<\/p>\n<p>And, of course, EEE. This is a way to save electricity by turning off the transmitter when there is no data to send. The diagram shows how this looks:<br \/>\n<img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/888029d8582e22cb5c5bb39d5f485aa9.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNo data \u2013 we send the message 'I\u2019ve gone to sleep' and disconnect. Occasionally, we wake up and send the message 'I\u2019m still here.' When data is available, the other side receives a warning 'I\u2019m waking up' and transmission begins. That is, only the receivers are constantly active.<\/p>\n<p>Now let\u2019s see what has been devised for the second option of the standard.<\/p>\n<h3>10BASE-T1S<\/h3>\n<p>\nAlready from the last letter, it's clear that this is a protocol for short distances (short reach). But why is it needed if T1L also works at short distances? Let\u2019s read the specifications:<\/p>\n<ul>\n<li>range up to 15m in point-to-point mode<\/li>\n<li>duplex or half-duplex<\/li>\n<li>conductors 24-26AWG (0.2-0.13mm\u00b2)<\/li>\n<li>symbol rate 12.5Mbaud<\/li>\n<li>DME, 4B5B encoding<\/li>\n<li>signal with an amplitude of 1V (1Vpp)<\/li>\n<li>up to 4 intermediate connectors (and two terminal ones)<\/li>\n<li>no support for EEE<\/li>\n<\/ul>\n<p>\nNothing special so far. So what is it needed for? Here\u2019s why:<\/p>\n<ul>\n<li>range up to 25m in multi-point mode (up to 8 nodes)<\/li>\n<\/ul>\n<p>\nAnd this:<\/p>\n<ul>\n<li>operating mode with collision avoidance PLCA RS (PHY-Level Collision Avoidance Reconciliation Sublayer)<\/li>\n<\/ul>\n<p>\nAnd this is already much more interesting, isn't it? It significantly helps reduce the number of wires in control cabinets, machines, robots, and cars. There are already suggestions to use it as a replacement for I2C in <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/dts-gdansk\/\"   title=\"servrar\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4502\">servrar<\/a>, switches and other electronics.<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/98614d57cc671efc36bee4d3251f8e60.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nBut the multi-point mode has drawbacks. The main one is the shared data transmission medium. Naturally, collisions are resolved with CSMA\/CD. But it is unknown how much delay there will be. This is critical for some applications. Therefore, the new standard has supplemented multi-point with a special mode PLCA RS (see the next section).<\/p>\n<p>The second downside is that PoDL does not work in multi-point mode. This means that power will have to be supplied through a separate cable or sourced locally. <\/p>\n<p>PoDL fungerar dock i punkt-till-punkt-l\u00e4ge \u00e4ven p\u00e5 T1S.<\/p>\n<h3>PLCA RS<\/h3>\n<p>\nDetta l\u00e4ge fungerar enligt f\u00f6ljande:<\/p>\n<ul>\n<li>noderna f\u00f6rdelar identifierare sinsemellan, noden med ID=0 blir koordinator<\/li>\n<li>koordinatorn s\u00e4nder ut ett BEACON-signal i n\u00e4tverket som markerar b\u00f6rjan p\u00e5 en ny \u00f6verf\u00f6ringscykel och \u00f6verf\u00f6r sitt datapaket<\/li>\n<li>efter att datapaketet har skickats, g\u00e5r \u00f6verf\u00f6ringsk\u00f6n till n\u00e4sta nod<\/li>\n<li>om noden inte har inlett \u00f6verf\u00f6ringen inom den tid som kr\u00e4vs f\u00f6r att skicka 20 bitar, g\u00e5r k\u00f6n vidare till n\u00e4sta nod<\/li>\n<li>n\u00e4r alla noder har skickat data (eller missat sin tur) inleder koordinatorn en ny cykel<\/li>\n<\/ul>\n<p>\nTotalt liknar detta TDMA. Men med den egenskapen att noden inte anv\u00e4nder sin tidsram om den inte har n\u00e5got att \u00f6verf\u00f6ra. Och ramstorleken \u00e4r inte strikt definierad, eftersom den beror p\u00e5 storleken p\u00e5 datapaketet som noden skickar. Och allt detta fungerar ovanp\u00e5 standard Ethernet-ramar 802.3 (PLCA RS \u00e4r inte obligatoriskt, s\u00e5 kompatibilitet m\u00e5ste finnas).<\/p>\n<p>Resultatet av att anv\u00e4nda PLCA visas nedan i graferna. Den f\u00f6rsta \u2013 f\u00f6rdr\u00f6jningen beroende p\u00e5 belastningen, den andra \u2013 kapaciteten beroende p\u00e5 antalet s\u00e4ndande noder. Det \u00e4r tydligt att f\u00f6rdr\u00f6jningen har blivit mycket mer f\u00f6ruts\u00e4gbar. I v\u00e4rsta fall \u00e4r den tv\u00e5 ordningar l\u00e4gre \u00e4n i v\u00e4rsta fallet med CSMA\/CD:<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/62bd8e271e7d882095281b37f63d8426.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOch kapaciteten i fallet med PLCA \u00e4r h\u00f6gre, eftersom den inte anv\u00e4nds f\u00f6r att l\u00f6sa kollisioner:<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/b66a9bb8836a6d8d9aa0b21d1136f186.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Kontakter<\/h3>\n<p>\nUrsprungligen valde vi mellan 6 olika kontaktalternativ f\u00f6reslagna av olika f\u00f6retag. I slut\u00e4ndan valde vi dessa tv\u00e5 alternativ: <\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/0edb52b01e5d082069a10d46a57cd540.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nF\u00f6r vanliga driftsf\u00f6rh\u00e5llanden valdes LC-kontakten IEC 63171-1 fr\u00e5n CommScope. <\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/a4b8c60e1ffbb0008973a0c5fe1d8dca.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nF\u00f6r sv\u00e5ra driftf\u00f6rh\u00e5llanden valdes IEC 63171-6 (tidigare 61076-3-125) kontaktfamiljen fr\u00e5n HARTING. Dessa kontakter \u00e4r designade f\u00f6r skyddsniv\u00e5er fr\u00e5n IP20 till IP67.<\/p>\n<p><img decoding=\"async\" alt=\"Kvarten Ethernet: gammal hastighet, nya m\u00f6jligheter\" src=\"\/wp-content\/uploads\/2020\/02\/88150dd0f844444ab76d6c3f394658f0.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSj\u00e4lvklart kan kontakter och kablar vara b\u00e5de UTP och STP. <\/p>\n<h3>\u00d6vrigt<\/h3>\n<p>\nVanlig fyrledarkabel Ethernet kan anv\u00e4ndas, d\u00e4r varje par anv\u00e4nds f\u00f6r en separat SPE-kanal. F\u00f6r att inte beh\u00f6va dra fyra separata kablar l\u00e5ngt bort. Eller anv\u00e4nda en enkelparskabel, och p\u00e5 den fj\u00e4rr\u00e4ndan s\u00e4tta en switch f\u00f6r enkelparsad Ethernet. <\/p>\n<p>Kan man ansluta denna switch direkt till f\u00f6retagets lokala n\u00e4tverk om n\u00e4tverket redan \u00e4r draget med fiber l\u00e5ngt bort? Anslut d\u00e4r sensorer och se m\u00e4tv\u00e4rden h\u00e4r. Direkt \u00f6ver n\u00e4tverket. Utan gr\u00e4nssnittskonverterare och gateways. <\/p>\n<p>Och det beh\u00f6ver inte n\u00f6dv\u00e4ndigtvis vara sensorer. Det kan vara \u00f6vervakningskameror, d\u00f6rrtelefoner eller \"smarta\" lampor. Aktuatorer f\u00f6r ventil eller turbin p\u00e5 passerkontroll.<\/p>\n<p>S\u00e5 det \u00f6ppnar intressanta perspektiv. \u00c4ven om SPE knappast kommer att ers\u00e4tta alla f\u00e4ltbussar. Men en betydande del av dem kommer den att ta. Speciellt inom bilindustrin.<\/p>\n<p><i>PS Jag har inte funnit texten till standarden i \u00f6ppen tillg\u00e5ng. Informationen ovan har samlats fr\u00e5n olika presentationer och material som finns tillg\u00e4ngliga p\u00e5 internet. S\u00e5 det kan finnas fel i den.<\/i><br \/>\n<br \/>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/489314\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>5 \u0444\u0435\u0432\u0440\u0430\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0433\u043e\u0434\u0430 \u0431\u044b\u043b \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d \u043d\u043e\u0432\u044b\u0439 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442 \u043d\u0430 10-\u043c\u0435\u0433\u0430\u0431\u0438\u0442\u043d\u044b\u0439 Ethernet. \u0414\u0430, \u0432\u044b \u0432\u0435\u0440\u043d\u043e \u043f\u0440\u043e\u0447\u0438\u0442\u0430\u043b\u0438: \u0434\u0435\u0441\u044f\u0442\u044c \u043c\u0435\u0433\u0430\u0431\u0438\u0442 \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443. \u0414\u043b\u044f \u0447\u0435\u0433\u043e \u0432 21-\u043c \u0432\u0435\u043a\u0435 \u043d\u0443\u0436\u043d\u0430 \u0442\u0430\u043a\u0430\u044f \u00ab\u043c\u0430\u043b\u0435\u043d\u044c\u043a\u0430\u044f\u00bb \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c? \u0414\u043b\u044f \u0437\u0430\u043c\u0435\u043d\u044b \u0442\u043e\u0433\u043e \u0437\u043e\u043e\u043f\u0430\u0440\u043a\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043a\u0440\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u0451\u043c\u043a\u0438\u043c \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c \u00ab\u043f\u043e\u043b\u0435\u0432\u0430\u044f \u0448\u0438\u043d\u0430\u00bb \u2014 Profibus, Modbus, CC-Link, CAN, FlexRay, HART \u0438 \u0442.\u0434. \u0418\u0445 \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u043c\u043d\u043e\u0433\u043e, \u043e\u043d\u0438 \u043d\u0435\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":71070,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-71069","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"5 \u0444\u0435\u0432\u0440\u0430\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0433\u043e\u0434\u0430 \u0431\u044b\u043b.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sv\/blog\/administrirovanie\/chetvertushka-ethernet-a-staraya-skorost-novye-vozmozhnosti\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO 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