{"id":1353,"date":"2014-09-09T19:11:23","date_gmt":"2014-09-09T19:11:23","guid":{"rendered":"http:\/\/tomaskalabis.com\/wordpress\/?p=1353"},"modified":"2016-03-09T09:00:06","modified_gmt":"2016-03-09T09:00:06","slug":"troubleshooting-trable-s-mtu","status":"publish","type":"post","link":"https:\/\/tomaskalabis.com\/wordpress\/troubleshooting-trable-s-mtu\/","title":{"rendered":"Troubleshooting – Trable s MTU"},"content":{"rendered":"

Pokud m\u00e1te probl\u00e9my s p\u0159ipojen\u00edm k internetu p\u0159i odes\u00edl\u00e1n\u00ed v\u011bt\u0161\u00edch dat, m\u016f\u017ee b\u00fdt probl\u00e9m zp\u016fsobem, \u017ee je router, kter\u00fd je v cest\u011b se chov\u00e1 jako \u010dern\u00e1 d\u00edra. K tomuto chov\u00e1n\u00ed doch\u00e1z\u00ed, pokud je nastavena ni\u017e\u0161\u00ed hodnota MTU (Maximum Transmission Untit) na routeru ne\u017e na na hodnota MTU na PC.<\/p>\n

Pro nalezen\u00ed \u010dern\u00e9 d\u00edry na va\u0161em routru jednodu\u0161e poslou\u017e\u00ed n\u00e1stroj PING s parametry -f<\/strong> a -l<\/strong> kdy -f<\/strong> (ode\u0161le paket sign\u00e1lu protokolu ICMP, kter\u00fd m\u00e1 na vrstv\u011b IP nastaven\u00fd bit p\u0159\u00edznaku nefragmentovat)<\/em> a -l<\/strong> ( nastav\u00ed datovou \u010d\u00e1st – tedy velikost sign\u00e1lu echo protokolu ICMP).<\/em><\/p>\n

Testov\u00e1n\u00ed m\u016f\u017eeme prov\u00e9st pomoc\u00ed syntaxe: ping ip_nebo_hostname -f -l 1472 (1500 – 28), p\u0159i\u010dem\u017e postupn\u00fdm zvy\u0161ov\u00e1n\u00edm parametru -l m\u016f\u017eeme ur\u010dit, jak velk\u00fd nefragmentovan\u00fd paket m\u016f\u017ee ur\u010ditou cestou proj\u00edt. \u00a0Nejmen\u0161\u00ed pou\u017e\u00edvan\u00e1 jedntka MTU je 576.<\/p>\n

Nastaven\u00ed MTU ve Windows se prov\u00e1d\u00ed editac\u00ed registru<\/strong><\/p>\n

    \n
  1. V nab\u00eddce Start klepn\u011bte na p\u0159\u00edkaz Ovl\u00e1dac\u00ed panely.<\/li>\n
  2. Poklepejte na mo\u017enost P\u0159ipojen\u00ed k s\u00edti a Internetu a potom klepnut\u00edm otev\u0159ete slo\u017eku S\u00ed\u0165ov\u00e1 p\u0159ipojen\u00ed.<\/li>\n
  3. Pokud je zde uvedeno v\u00edce s\u00ed\u0165ov\u00fdch p\u0159ipojen\u00ed, poklepejte na ka\u017ed\u00e9 z nich a v zobrazen\u00e9m dialogov\u00e9m okn\u011b Stav klepn\u011bte na kartu Podpora. P\u0159ipojen\u00ed, u kter\u00e9ho je zobrazena polo\u017eka V\u00fdchoz\u00ed br\u00e1na, je pravd\u011bpodobn\u011b s\u00ed\u0165ov\u00e9 p\u0159ipojen\u00ed pou\u017e\u00edvan\u00e9 pro p\u0159ipojen\u00ed k Internetu. Poznamenejte si n\u00e1zev tohoto p\u0159ipojen\u00ed (nap\u0159\u00edklad P\u0159ipojen\u00ed k m\u00edstn\u00ed s\u00edti 2).<\/li>\n
  4. Spus\u0165te Editor registru (Regedit.exe).<\/li>\n
  5. HKEY_LOCAL_MACHINE a vyhledejte n\u00e1sleduj\u00edc\u00ed kl\u00ed\u010d:
    \nSYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\ID_pro_adapt\u00e9r , pokud se zde vyskytuje v\u00edce Interfaces, m\u016f\u017eeme si pomoci nap\u0159 v\u00fdchoz\u00ed br\u00e1nou (default gateway) a tak naj\u00edt ten spr\u00e1vn\u00fd, u kter\u00e9ho provedeme p\u0159id\u00e1n\u00ed hodnoty MTU.<\/li>\n
  6. Klepn\u011bte prav\u00fdm tla\u010d\u00edtkem v prav\u00e9 \u010d\u00e1sti obrazovky, klepn\u011bte na p\u0159\u00edkaz Nov\u00fd a potom na mo\u017enost Hodnota DWORD. Hodnotu pojmenujte MTU.<\/li>\n
  7. Poklepejte na hodnotu, abyste ji mohli upravit. Ve skupinov\u00e9m r\u00e1me\u010dku \u010c\u00edseln\u00e1 soustava vyberte mo\u017enost Des\u00edtkov\u00e1 a potom zadejte nejvy\u0161\u0161\u00ed p\u0159ijatelnou velikost jednotky MTU, kterou jste zjistili testov\u00e1n\u00edm pomoc\u00ed n\u00e1stroje Ping.<\/li>\n
  8. Ukon\u010dete Editor registru.<\/li>\n<\/ol>\n

    viz.\u00a0http:\/\/www.root.cz\/clanky\/velke-trable-s-malym-mtu\/<\/a><\/p>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    Pokud m\u00e1te probl\u00e9my s p\u0159ipojen\u00edm k internetu p\u0159i odes\u00edl\u00e1n\u00ed v\u011bt\u0161\u00edch dat, m\u016f\u017ee b\u00fdt probl\u00e9m zp\u016fsobem, \u017ee je router, kter\u00fd je v cest\u011b se chov\u00e1 jako \u010dern\u00e1 d\u00edra. K tomuto chov\u00e1n\u00ed …<\/p>\n","protected":false},"author":2,"featured_media":2087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[61,12],"tags":[213],"yoast_head":"\nTroubleshooting - Trable s MTU<\/title>\n<meta name=\"description\" content=\"Troubleshooting - Trable s MTU - jak zm\u011bnit hodnotu MTU ve Windows?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tomaskalabis.com\/wordpress\/troubleshooting-trable-s-mtu\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Troubleshooting - Trable s MTU\" \/>\n<meta property=\"og:description\" content=\"Troubleshooting - 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