{"id":1583,"date":"2026-08-23T00:32:48","date_gmt":"2026-08-22T17:32:48","guid":{"rendered":"https:\/\/yourapx.com\/?p=1583"},"modified":"2026-08-23T00:32:48","modified_gmt":"2026-08-22T17:32:48","slug":"sua-switch-cisco-c9300-48uxm-a-loi-upoe-multigigabit-va-khoi-dong","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=1583","title":{"rendered":"S\u1eeda switch Cisco C9300-48UXM-A l\u1ed7i UPOE, multigigabit v\u00e0 kh\u1edfi \u0111\u1ed9ng"},"content":{"rendered":"

1. Gi\u1edbi thi\u1ec7u Cisco C9300-48UXM-A<\/h2>\n

Cisco Catalyst C9300-48UXM-A<\/strong> l\u00e0 switch access cao c\u1ea5p 48 c\u1ed5ng multigigabit, trong \u0111\u00f3 c\u00f3 12 c\u1ed5ng h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 \u0111\u1ebfn 10G\/mGig, uplink module, UPOE v\u00e0 gi\u1ea5y ph\u00e9p Network Advantage. Thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi Wi-Fi m\u1eadt \u0111\u1ed9 cao, camera, \u0111i\u1ec7n tho\u1ea1i IP v\u00e0 endpoint c\u1ea7n b\u0103ng th\u00f4ng ho\u1eb7c c\u00f4ng su\u1ea5t c\u1ea5p ngu\u1ed3n l\u1edbn.<\/p>\n

So v\u1edbi b\u1ea3n C9300-24T, 48UXM c\u00f3 kh\u1ed1i ngu\u1ed3n v\u00e0 c\u1ea5p UPOE ph\u1ee9c t\u1ea1p h\u01a1n. Quy tr\u00ecnh ch\u1ea9n \u0111o\u00e1n ph\u1ea3i t\u00e1ch r\u00f5 l\u1ed7i d\u1eef li\u1ec7u, l\u1ed7i c\u1ea5p ngu\u1ed3n v\u00e0 l\u1ed7i ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t.<\/p>\n

\"Mainboard
Mainboard th\u1ef1c t\u1ebf c\u1ee7a Cisco C9300-48UXM-A v\u1edbi c\u00e1c kh\u1ed1i t\u1ea3n nhi\u1ec7t v\u00e0 ngu\u1ed3n c\u00f4ng su\u1ea5t.<\/figcaption><\/figure>\n

2. Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p<\/h2>\n
    \n
  • Kh\u00f4ng l\u00ean ngu\u1ed3n, boot ch\u1eadm, d\u1eebng boot ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n
  • M\u1ed9t nh\u00f3m c\u1ed5ng multigigabit ch\u1ec9 ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p ho\u1eb7c m\u1ea5t link.<\/li>\n
  • C\u1ed5ng truy\u1ec1n d\u1eef li\u1ec7u b\u00ecnh th\u01b0\u1eddng nh\u01b0ng kh\u00f4ng c\u1ea5p UPOE.<\/li>\n
  • Kh\u00f4ng nh\u1eadn uplink module, StackWise ho\u1eb7c c\u1ea3nh b\u00e1o ngu\u1ed3n.<\/li>\n
  • Nhi\u1ec7t \u0111\u1ed9 cao, qu\u1ea1t ch\u1ea1y t\u1ed1i \u0111a v\u00e0 c\u00f4ng su\u1ea5t PoE kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/li>\n<\/ul>\n

    3. Ch\u1ea9n \u0111o\u00e1n l\u1ed7i UPOE v\u00e0 c\u1ed5ng multigigabit<\/h2>\n

    \u0110\u1ea7u ti\u00ean c\u1ea7n x\u00e1c nh\u1eadn c\u00f4ng su\u1ea5t ngu\u1ed3n, t\u1ed5ng ng\u00e2n s\u00e1ch PoE, c\u1ea5u h\u00ecnh c\u1ed5ng v\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i. Sau \u0111\u00f3 th\u1eed ch\u00e9o c\u00e1p \u0111\u1ea1t chu\u1ea9n, ki\u1ec3m tra negotiation v\u00e0 log PoE. Ch\u1ec9 khi lo\u1ea1i tr\u1eeb c\u1ea5u h\u00ecnh, d\u00e2y v\u00e0 endpoint m\u1edbi chuy\u1ec3n sang \u0111o ki\u1ec3m ph\u1ea7n c\u1ee9ng.<\/p>\n

    M\u1ed7i c\u1ee5m c\u1ed5ng c\u00f3 m\u1ea1ch b\u1ea3o v\u1ec7, PHY v\u00e0 kh\u1ed1i c\u1ea5p ngu\u1ed3n li\u00ean quan. Shock \u0111i\u1ec7n, qu\u00e1 \u00e1p t\u1eeb c\u00e1p ngo\u00e0i tr\u1eddi ho\u1eb7c t\u1ea3i PoE b\u1ea5t th\u01b0\u1eddng c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng ri\u00eang ch\u1ee9c n\u0103ng c\u1ea5p ngu\u1ed3n trong khi Ethernet v\u1eabn ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

    \"C\u1ea5u
    C\u1ea5u tr\u00fac ph\u1ea7n c\u1ee9ng b\u00ean trong sau khi th\u00e1o ki\u1ec3m tra.<\/figcaption><\/figure>\n

    4. L\u1ed7i ngu\u1ed3n, boot v\u00e0 nhi\u1ec7t \u0111\u1ed9<\/h2>\n

    Thi\u1ebft b\u1ecb ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u1edbi ngu\u1ed3n ph\u00f9 h\u1ee3p v\u00e0 airflow \u0111\u00fang h\u01b0\u1edbng. V\u1edbi l\u1ed7i boot l\u1eb7p, APX thu log console, ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng ngu\u1ed3n v\u00e0 b\u1ed9 nh\u1edb tr\u01b0\u1edbc khi x\u1eed l\u00fd ph\u1ea7n m\u1ec1m. Vi\u1ec7c thay ho\u1eb7c n\u1ea1p linh ki\u1ec7n khi ch\u01b0a khoanh v\u00f9ng c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t d\u1eef li\u1ec7u c\u1ea5u h\u00ecnh v\u00e0 t\u0103ng r\u1ee7i ro cho mainboard.<\/p>\n

    \"Chi
    \u1ea2nh chi ti\u1ebft khu v\u1ef1c c\u1ea7n khoanh v\u00f9ng khi thi\u1ebft b\u1ecb l\u1ed7i c\u1ed5ng ho\u1eb7c ngu\u1ed3n.<\/figcaption><\/figure>\n

    5. Quy tr\u00ecnh ki\u1ec3m th\u1eed sau s\u1eeda ch\u1eefa<\/h2>\n
      \n
    1. Ki\u1ec3m tra cold boot v\u00e0 warm reboot nhi\u1ec1u l\u1ea7n.<\/li>\n
    2. Test link\/t\u1ed1c \u0111\u1ed9 tr\u00ean c\u00e1c nh\u00f3m c\u1ed5ng 1G, mGig v\u00e0 uplink.<\/li>\n
    3. Test UPOE b\u1eb1ng t\u1ea3i ph\u00f9 h\u1ee3p, theo d\u00f5i c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/li>\n
    4. Ki\u1ec3m tra qu\u1ea1t, ngu\u1ed3n d\u1ef1 ph\u00f2ng, log h\u1ec7 th\u1ed1ng v\u00e0 c\u1ea3nh b\u00e1o.<\/li>\n
    5. Ch\u1ea1y t\u1ea3i \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc khi b\u00e0n giao.<\/li>\n<\/ol>\n

      APX ti\u1ebfp nh\u1eadn Cisco Catalyst 9300 tr\u00ean to\u00e0n qu\u1ed1c. Li\u00ean h\u1ec7 0367 247 577<\/strong> ho\u1eb7c Zalo 0978 626 298<\/strong> \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n.<\/p>\n","protected":false},"excerpt":{"rendered":"

      1. Gi\u1edbi thi\u1ec7u Cisco C9300-48UXM-A Cisco Catalyst C9300-48UXM-A l\u00e0 switch access cao c\u1ea5p 48 c\u1ed5ng multigigabit, trong \u0111\u00f3 c\u00f3 12 c\u1ed5ng h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 \u0111\u1ebfn 10G\/mGig, uplink module, UPOE v\u00e0 gi\u1ea5y ph\u00e9p Network Advantage. Thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi Wi-Fi m\u1eadt \u0111\u1ed9 cao, camera, \u0111i\u1ec7n tho\u1ea1i IP v\u00e0 endpoint c\u1ea7n b\u0103ng th\u00f4ng ho\u1eb7c c\u00f4ng […]<\/p>\n","protected":false},"author":1,"featured_media":1572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[48,50,43,49],"class_list":["post-1583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet-moi","tag-cisco-c9300-48uxm","tag-multigigabit","tag-sua-switch-cisco","tag-upoe"],"yoast_head":"\nS\u1eeda switch Cisco C9300-48UXM-A l\u1ed7i UPOE, multigigabit v\u00e0 kh\u1edfi \u0111\u1ed9ng - 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=1583\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u1eeda switch Cisco C9300-48UXM-A l\u1ed7i UPOE, multigigabit v\u00e0 kh\u1edfi \u0111\u1ed9ng - APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG\" \/>\n<meta property=\"og:description\" content=\"1. Gi\u1edbi thi\u1ec7u Cisco C9300-48UXM-A Cisco Catalyst C9300-48UXM-A l\u00e0 switch access cao c\u1ea5p 48 c\u1ed5ng multigigabit, trong \u0111\u00f3 c\u00f3 12 c\u1ed5ng h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 \u0111\u1ebfn 10G\/mGig, uplink module, UPOE v\u00e0 gi\u1ea5y ph\u00e9p Network Advantage. Thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi Wi-Fi m\u1eadt \u0111\u1ed9 cao, camera, \u0111i\u1ec7n tho\u1ea1i IP v\u00e0 endpoint c\u1ea7n b\u0103ng th\u00f4ng ho\u1eb7c c\u00f4ng […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/yourapx.com\/?p=1583\" \/>\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=\"2026-08-22T17:32:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/yourapx.com\/wp-content\/uploads\/2026\/08\/c9300-48uxm-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=\"1 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1583#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1583\"},\"author\":{\"name\":\"Lenhnamphong\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/#\\\/schema\\\/person\\\/cc22ac5cd50e2713a0975d9e39d34434\"},\"headline\":\"S\u1eeda switch Cisco C9300-48UXM-A l\u1ed7i UPOE, multigigabit v\u00e0 kh\u1edfi \u0111\u1ed9ng\",\"datePublished\":\"2026-08-22T17:32:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1583\"},\"wordCount\":690,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/#\\\/schema\\\/person\\\/cc22ac5cd50e2713a0975d9e39d34434\"},\"image\":{\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1583#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/yourapx.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/c9300-48uxm-front.jpg\",\"keywords\":[\"Cisco C9300-48UXM\",\"multigigabit\",\"s\u1eeda switch Cisco\",\"UPOE\"],\"articleSection\":[\"S\u1eefa ch\u1eefa\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/yourapx.com\\\/?p=1583#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/yourapx.com\\\/?p=1583\",\"url\":\"https:\\\/\\\/yourapx.com\\\/?p=1583\",\"name\":\"S\u1eeda switch Cisco C9300-48UXM-A l\u1ed7i UPOE, multigigabit v\u00e0 kh\u1edfi \u0111\u1ed9ng - 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