{"id":1581,"date":"2026-08-23T00:18:52","date_gmt":"2026-08-22T17:18:52","guid":{"rendered":"https:\/\/yourapx.com\/?p=1581"},"modified":"2026-08-23T00:24:37","modified_gmt":"2026-08-22T17:24:37","slug":"sua-switch-juniper-ex4300-24t-loi-nguon-quat-boot-va-mat-cong","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=1581","title":{"rendered":"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng"},"content":{"rendered":"

1. Gi\u1edbi thi\u1ec7u Juniper EX4300-24T<\/h2>\n

Juniper EX4300-24T<\/strong> l\u00e0 switch Ethernet doanh nghi\u1ec7p c\u00f3 24 c\u1ed5ng 10\/100\/1000BASE-T, b\u1ed1n c\u1ed5ng QSFP+ v\u00e0 h\u1ed7 tr\u1ee3 module uplink SFP+ t\u00f9y c\u1ea5u h\u00ecnh. Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng t\u1ea1i campus, ph\u00f2ng m\u00e1y v\u00e0 l\u1edbp aggregation\/access y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao.<\/p>\n

EX4300-24T l\u00e0 phi\u00ean b\u1ea3n kh\u00f4ng PoE<\/strong>. Thi\u1ebft b\u1ecb d\u00f9ng ngu\u1ed3n AC 350 W, hai fan module v\u00e0 h\u1ed7 tr\u1ee3 c\u00e1c th\u00e0nh ph\u1ea7n thay th\u1ebf t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. Khi ki\u1ec3m tra ph\u1ea3i b\u1ea3o \u0111\u1ea3m h\u01b0\u1edbng gi\u00f3 c\u1ee7a ngu\u1ed3n v\u00e0 qu\u1ea1t \u0111\u1ed3ng nh\u1ea5t.<\/p>\n

\"C\u1ea5u
C\u1ea5u tr\u00fac mainboard, ngu\u1ed3n v\u00e0 t\u1ea3n nhi\u1ec7t c\u1ee7a Juniper EX4300-24T.<\/figcaption><\/figure>\n

2. D\u1ea5u hi\u1ec7u l\u1ed7i th\u01b0\u1eddng g\u1eb7p<\/h2>\n
    \n
  • Kh\u00f4ng l\u00ean ngu\u1ed3n, ngu\u1ed3n b\u00e1o l\u1ed7i ho\u1eb7c thi\u1ebft b\u1ecb t\u1eaft khi t\u1ea3i t\u0103ng.<\/li>\n
  • Qu\u1ea1t ch\u1ea1y t\u1ed1i \u0111a, b\u00e1o fan\/temperature ho\u1eb7c t\u1ef1 t\u1eaft b\u1ea3o v\u1ec7 nhi\u1ec7t.<\/li>\n
  • D\u1eebng trong qu\u00e1 tr\u00ecnh boot Junos, l\u1eb7p boot ho\u1eb7c kh\u00f4ng v\u00e0o ch\u1ebf \u0111\u1ed9 v\u1eadn h\u00e0nh.<\/li>\n
  • M\u1ea5t m\u1ed9t nh\u00f3m c\u1ed5ng Ethernet, uplink SFP+ ho\u1eb7c QSFP+ kh\u00f4ng nh\u1eadn module.<\/li>\n
  • Virtual Chassis kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c th\u00e0nh vi\u00ean r\u01a1i kh\u1ecfi h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

    3. Ki\u1ec3m tra kh\u1ed1i ngu\u1ed3n v\u00e0 l\u00e0m m\u00e1t<\/h2>\n

    Ngu\u1ed3n v\u00e0 fan tr\u00ean EX4300 l\u00e0 c\u00e1c module \u0111\u1ed9c l\u1eadp nh\u01b0ng l\u1ed7i v\u1eabn c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb \u0111\u1ea7u n\u1ed1i, t\u00edn hi\u1ec7u gi\u00e1m s\u00e1t ho\u1eb7c t\u1ea3i tr\u00ean mainboard. C\u1ea7n ki\u1ec3m tra ri\u00eang t\u1eebng ngu\u1ed3n, \u0111\u1ed1i chi\u1ebfu c\u1ea3nh b\u00e1o chassis v\u00e0 x\u00e1c nh\u1eadn \u0111\u00fang AIR IN\/AIR OUT tr\u01b0\u1edbc khi thay th\u1ebf.<\/p>\n

    Kh\u00f4ng v\u1eadn h\u00e0nh k\u00e9o d\u00e0i khi thi\u1ebfu fan ho\u1eb7c airflow sai chi\u1ec1u. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u00f3 th\u1ec3 g\u00e2y l\u1ed7i gi\u00e1n \u0111o\u1ea1n, suy gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a uplink v\u00e0 l\u00e0m thi\u1ebft b\u1ecb kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/p>\n

    \"M\u1eb7t
    M\u1eb7t d\u01b0\u1edbi mainboard \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u1ea1i trung t\u00e2m k\u1ef9 thu\u1eadt APX.<\/figcaption><\/figure>\n

    4. Ki\u1ec3m tra l\u1ed7i boot v\u00e0 c\u1ed5ng<\/h2>\n

    Log console v\u00e0 tr\u1ea1ng th\u00e1i LCD trong giai \u0111o\u1ea1n boot l\u00e0 d\u1eef li\u1ec7u quan tr\u1ecdng. K\u1ef9 thu\u1eadt vi\u00ean ki\u1ec3m tra ngu\u1ed3n, b\u1ed9 nh\u1edb l\u01b0u tr\u1eef v\u00e0 t\u00ednh to\u00e0n v\u1eb9n ph\u1ea7n m\u1ec1m tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh n\u1ea1p l\u1ea1i Junos. V\u1edbi l\u1ed7i c\u1ed5ng, c\u1ea7n th\u1eed ch\u00e9o d\u00e2y\/module, ki\u1ec3m tra c\u1ea5u h\u00ecnh v\u00e0 \u0111\u1ebfm l\u1ed7i giao di\u1ec7n \u0111\u1ec3 t\u00e1ch l\u1ed7i logic kh\u1ecfi l\u1ed7i PHY.<\/p>\n

    \"Chi
    \u1ea2nh chi ti\u1ebft ph\u1ee5c v\u1ee5 khoanh v\u00f9ng v\u00e0 \u0111o ki\u1ec3m ph\u1ea7n c\u1ee9ng.<\/figcaption><\/figure>\n

    5. Quy tr\u00ecnh s\u1eeda ch\u1eefa Juniper EX4300 t\u1ea1i APX<\/h2>\n
      \n
    1. Ghi nh\u1eadn c\u1ea5u h\u00ecnh, vai tr\u00f2 Virtual Chassis v\u00e0 tri\u1ec7u ch\u1ee9ng th\u1ef1c t\u1ebf.<\/li>\n
    2. \u0110\u1ecdc alarm, log console, ki\u1ec3m tra ngu\u1ed3n, qu\u1ea1t v\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/li>\n
    3. \u0110o ki\u1ec3m mainboard theo t\u1eebng kh\u1ed1i v\u00e0 th\u1eed ch\u00e9o module.<\/li>\n
    4. Ch\u1ea1y burn-in, ki\u1ec3m tra to\u00e0n b\u1ed9 c\u1ed5ng v\u00e0 theo d\u00f5i l\u1ed7i l\u1eb7p.<\/li>\n
    5. B\u00e0n giao c\u00f9ng bi\u00ean b\u1ea3n ki\u1ec3m th\u1eed v\u00e0 khuy\u1ebfn ngh\u1ecb airflow.<\/li>\n<\/ol>\n

      Li\u00ean h\u1ec7 APX qua Hotline 0367 247 577<\/strong> ho\u1eb7c Zalo 0978 626 298<\/strong> khi Juniper EX4300 g\u1eb7p l\u1ed7i.<\/p>\n","protected":false},"excerpt":{"rendered":"

      1. Gi\u1edbi thi\u1ec7u Juniper EX4300-24T Juniper EX4300-24T l\u00e0 switch Ethernet doanh nghi\u1ec7p c\u00f3 24 c\u1ed5ng 10\/100\/1000BASE-T, b\u1ed1n c\u1ed5ng QSFP+ v\u00e0 h\u1ed7 tr\u1ee3 module uplink SFP+ t\u00f9y c\u1ea5u h\u00ecnh. Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng t\u1ea1i campus, ph\u00f2ng m\u00e1y v\u00e0 l\u1edbp aggregation\/access y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao. EX4300-24T l\u00e0 phi\u00ean b\u1ea3n kh\u00f4ng PoE. Thi\u1ebft b\u1ecb d\u00f9ng ngu\u1ed3n […]<\/p>\n","protected":false},"author":1,"featured_media":1569,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[47,45,46],"class_list":["post-1581","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet-moi","tag-ex4300-24t","tag-juniper-ex4300","tag-sua-switch-juniper"],"yoast_head":"\nS\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng - APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/yourapx.com\/?p=1581\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng - APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG\" \/>\n<meta property=\"og:description\" content=\"1. Gi\u1edbi thi\u1ec7u Juniper EX4300-24T Juniper EX4300-24T l\u00e0 switch Ethernet doanh nghi\u1ec7p c\u00f3 24 c\u1ed5ng 10\/100\/1000BASE-T, b\u1ed1n c\u1ed5ng QSFP+ v\u00e0 h\u1ed7 tr\u1ee3 module uplink SFP+ t\u00f9y c\u1ea5u h\u00ecnh. Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng t\u1ea1i campus, ph\u00f2ng m\u00e1y v\u00e0 l\u1edbp aggregation\/access y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao. EX4300-24T l\u00e0 phi\u00ean b\u1ea3n kh\u00f4ng PoE. Thi\u1ebft b\u1ecb d\u00f9ng ngu\u1ed3n […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/yourapx.com\/?p=1581\" \/>\n<meta property=\"og:site_name\" content=\"APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-22T17:18:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-22T17:24:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/yourapx.com\/wp-content\/uploads\/2026\/08\/ex4300-front.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1086\" \/>\n\t<meta property=\"og:image:height\" content=\"1448\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Lenhnamphong\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lenhnamphong\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1581#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1581\"},\"author\":{\"name\":\"Lenhnamphong\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/#\\\/schema\\\/person\\\/cc22ac5cd50e2713a0975d9e39d34434\"},\"headline\":\"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng\",\"datePublished\":\"2026-08-22T17:18:52+00:00\",\"dateModified\":\"2026-08-22T17:24:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1581\"},\"wordCount\":677,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/#\\\/schema\\\/person\\\/cc22ac5cd50e2713a0975d9e39d34434\"},\"image\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1581#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/yourapx.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/ex4300-front.jpg\",\"keywords\":[\"EX4300-24T\",\"Juniper EX4300\",\"s\u1eeda switch Juniper\"],\"articleSection\":[\"S\u1eefa ch\u1eefa\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/yourapx.com\\\/?p=1581#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1581\",\"url\":\"https:\\\/\\\/yourapx.com\\\/?p=1581\",\"name\":\"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng - 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APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/yourapx.com\/?p=1581","og_locale":"vi_VN","og_type":"article","og_title":"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng - APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG","og_description":"1. Gi\u1edbi thi\u1ec7u Juniper EX4300-24T Juniper EX4300-24T l\u00e0 switch Ethernet doanh nghi\u1ec7p c\u00f3 24 c\u1ed5ng 10\/100\/1000BASE-T, b\u1ed1n c\u1ed5ng QSFP+ v\u00e0 h\u1ed7 tr\u1ee3 module uplink SFP+ t\u00f9y c\u1ea5u h\u00ecnh. Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng t\u1ea1i campus, ph\u00f2ng m\u00e1y v\u00e0 l\u1edbp aggregation\/access y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao. EX4300-24T l\u00e0 phi\u00ean b\u1ea3n kh\u00f4ng PoE. Thi\u1ebft b\u1ecb d\u00f9ng ngu\u1ed3n […]","og_url":"https:\/\/yourapx.com\/?p=1581","og_site_name":"APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG","article_published_time":"2026-08-22T17:18:52+00:00","article_modified_time":"2026-08-22T17:24:37+00:00","og_image":[{"width":1086,"height":1448,"url":"https:\/\/yourapx.com\/wp-content\/uploads\/2026\/08\/ex4300-front.jpg","type":"image\/jpeg"}],"author":"Lenhnamphong","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"Lenhnamphong","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"4 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/yourapx.com\/?p=1581#article","isPartOf":{"@id":"https:\/\/yourapx.com\/?p=1581"},"author":{"name":"Lenhnamphong","@id":"https:\/\/yourapx.com\/#\/schema\/person\/cc22ac5cd50e2713a0975d9e39d34434"},"headline":"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng","datePublished":"2026-08-22T17:18:52+00:00","dateModified":"2026-08-22T17:24:37+00:00","mainEntityOfPage":{"@id":"https:\/\/yourapx.com\/?p=1581"},"wordCount":677,"commentCount":0,"publisher":{"@id":"https:\/\/yourapx.com\/#\/schema\/person\/cc22ac5cd50e2713a0975d9e39d34434"},"image":{"@id":"https:\/\/yourapx.com\/?p=1581#primaryimage"},"thumbnailUrl":"https:\/\/yourapx.com\/wp-content\/uploads\/2026\/08\/ex4300-front.jpg","keywords":["EX4300-24T","Juniper EX4300","s\u1eeda switch Juniper"],"articleSection":["S\u1eefa ch\u1eefa"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/yourapx.com\/?p=1581#respond"]}]},{"@type":"WebPage","@id":"https:\/\/yourapx.com\/?p=1581","url":"https:\/\/yourapx.com\/?p=1581","name":"S\u1eeda switch Juniper EX4300-24T l\u1ed7i ngu\u1ed3n, qu\u1ea1t, boot v\u00e0 m\u1ea5t c\u1ed5ng - 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