{"id":4241,"date":"2025-10-23T11:12:00","date_gmt":"2025-10-23T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/uplink-failure-detection-prevent-network-downtime-continuity\/"},"modified":"2026-06-22T06:01:09","modified_gmt":"2026-06-22T06:01:09","slug":"uplink-failure-detection-prevent-network-downtime-continuity","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/uplink-failure-detection-prevent-network-downtime-continuity","title":{"rendered":"Ph\u00e1t hi\u1ec7n S\u1ef1 c\u1ed1 Li\u00ean k\u1ebft L\u00ean (UFD): Ng\u01b0\u1eddi b\u1ea3o v\u1ec7 th\u1ea7m l\u1eb7ng cho th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng c\u1ee7a b\u1ea1n"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef.webp\" alt=\"Uplink Failure Detection (UFD)\" class=\"wp-image-4239\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6fb3b19480ad4d2985f2f4d76cfde6ef-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 si\u00eau k\u1ebft n\u1ed1i ng\u00e0y nay, th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t b\u1ea5t ti\u1ec7n; m\u00e0 c\u00f2n l\u00e0 \u0111\u00f2n gi\u00e1ng tr\u1ef1c ti\u1ebfp v\u00e0o n\u0103ng su\u1ea5t, doanh thu v\u00e0 danh ti\u1ebfng. Trong khi ph\u1ea7n l\u1edbn c\u00e1c \u0111\u1ed9i CNTT t\u1eadp trung v\u00e0o t\u01b0\u1eddng l\u1eeda, b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 m\u00e1y ch\u1ee7, th\u00ec m\u1ed9t th\u00e0nh ph\u1ea7n then ch\u1ed1t trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 th\u01b0\u1eddng v\u1eadn h\u00e0nh trong b\u00f3ng t\u1ed1i: \u0111\u01b0\u1eddng l\u00ean (uplink). \u0110i\u1ec1u g\u00ec x\u1ea3y ra khi \u0111\u1ed9ng m\u1ea1ch s\u1ed1ng c\u00f2n n\u00e0y \u00e2m th\u1ea7m g\u1eb7p s\u1ef1 c\u1ed1? H\u1ed7n lo\u1ea1n. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac <strong>Ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 \u0111\u01b0\u1eddng l\u00ean (UFD)<\/strong> n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t anh h\u00f9ng th\u1ea7m l\u1eb7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i ph\u00e2n t\u00edch chuy\u00ean s\u00e2u n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 <strong>UFD l\u00e0 g\u00ec<\/strong>, l\u00fd do v\u00ec sao n\u00f3 l\u00e0 y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, v\u00e0 c\u00e1ch th\u1ee9c s\u1ef1 k\u1ebft h\u1ee3p h\u00e0i h\u00f2a gi\u1eefa UFD v\u1edbi ph\u1ea7n c\u1ee9ng ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>transceiver quang h\u1ecdc LINK-PP<\/strong><\/a> t\u1ea1o n\u00ean m\u1ed9t chu\u1ed7i \u0111\u1ed9 tin c\u1eady kh\u00f4ng th\u1ec3 ph\u00e1 v\u1ee1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc Ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 \u0111\u01b0\u1eddng l\u00ean (UFD) l\u00e0 g\u00ec? V\u01b0\u1ee3t xa ch\u1ee9c n\u0103ng ping c\u01a1 b\u1ea3n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, <strong>Ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 \u0111\u01b0\u1eddng l\u00ean<\/strong> l\u00e0 m\u1ed9t giao th\u1ee9c gi\u00e1m s\u00e1t ch\u1ee7 \u0111\u1ed9ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn m\u1ea1ng. M\u1ee5c \u0111\u00edch duy nh\u1ea5t c\u1ee7a n\u00f3 l\u00e0 li\u00ean t\u1ee5c x\u00e1c minh t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe v\u00e0 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed5ng \u0111\u01b0\u1eddng l\u00ean \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh\u2014t\u1ee9c l\u00e0 k\u1ebft n\u1ed1i d\u1eabn t\u1edbi m\u1ea1ng l\u00f5i ho\u1eb7c Internet c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y coi \u0111\u00e2y nh\u01b0 m\u1ed9t thi\u1ebft b\u1ecb theo d\u00f5i nh\u1ecbp tim li\u00ean t\u1ee5c d\u00e0nh cho nh\u1eefng k\u1ebft n\u1ed1i quan tr\u1ecdng nh\u1ea5t c\u1ee7a m\u1ea1ng b\u1ea1n. M\u1ed9t l\u1ec7nh ping ICMP \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 cho bi\u1ebft li\u1ec7u m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 \u0111ang ho\u1ea1t \u0111\u1ed9ng hay kh\u00f4ng, nh\u01b0ng UFD cung c\u1ea5p hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u00e0 tinh t\u1ebf h\u01a1n nhi\u1ec1u v\u1ec1 tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng s\u1eb5n s\u00e0ng d\u1ecbch v\u1ee5.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc V\u00ec sao m\u1ea1ng c\u1ee7a b\u1ea1n kh\u1ea9n thi\u1ebft c\u1ea7n UFD: Chi ph\u00ed cao c\u1ee7a s\u1ef1 im l\u1eb7ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kh\u00f4ng c\u00f3 UFD, m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng c\u00f3 th\u1ec3 ho\u00e0n to\u00e0n kh\u00f4ng nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c r\u1eb1ng \u0111\u01b0\u1eddng d\u1eabn l\u00ean tr\u00ean c\u1ee7a n\u00f3 \u0111\u00e3 g\u1eb7p s\u1ef1 c\u1ed1. Li\u00ean k\u1ebft c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 v\u1eabn \u201cho\u1ea1t \u0111\u1ed9ng\u201d (L\u1edbp 1), nh\u01b0ng th\u1ef1c t\u1ebf l\u1ed9 tr\u00ecnh \u0111\u00f3 \u0111\u00e3 ch\u1ebft (L\u1edbp 3). \u0110i\u1ec1u n\u00e0y t\u1ea1o ra t\u00ecnh hu\u1ed1ng \u201cl\u1ed7 \u0111en\u201d, n\u01a1i c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111i nh\u01b0ng ch\u01b0a bao gi\u1edd \u0111\u1ebfn \u0111\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1eadu qu\u1ea3 r\u1ea5t nghi\u00eam tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Th\u1eddi gian ch\u1edd \u1ee9ng d\u1ee5ng:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng SaaS quan tr\u1ecdng nh\u01b0 h\u1ec7 th\u1ed1ng CRM v\u00e0 ERP tr\u1edf n\u00ean kh\u00f4ng ph\u1ea3n h\u1ed3i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Cu\u1ed9c g\u1ecdi VoIP b\u1ecb ng\u1eaft:<\/strong> Giao ti\u1ebfp ng\u1eebng tr\u1ec7 ho\u00e0n to\u00e0n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1ea5t d\u1eef li\u1ec7u \u00e2m th\u1ea7m:<\/strong> C\u00e1c giao d\u1ecbch v\u00e0 vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u th\u1ea5t b\u1ea1i m\u00e0 kh\u00f4ng c\u00f3 th\u00f4ng b\u00e1o l\u1ed7i r\u00f5 r\u00e0ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u01a1 ch\u1ebf d\u1ef1 ph\u00f2ng th\u1ea5t b\u1ea1i:<\/strong> \u0110\u01b0\u1eddng k\u1ebft n\u1ed1i ISP d\u1ef1 ph\u00f2ng \u0111\u1eaft ti\u1ec1n c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ch\u1eb3ng bao gi\u1edd k\u00edch ho\u1ea1t, b\u1edfi v\u00ec \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i ch\u00ednh <em>v\u1eabn hi\u1ec3n th\u1ecb l\u00e0<\/em> \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c <strong>UFD m\u1ea1nh m\u1ebd<\/strong> l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i c\u1ee7a <strong>thi\u1ebft k\u1ebf m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng s\u1eb5n s\u00e0ng cao<\/strong>, \u0111\u1ea3m b\u1ea3o c\u00e1c c\u01a1 ch\u1ebf chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 mong \u0111\u1ee3i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc C\u00e1ch UFD Ho\u1ea1t \u0110\u1ed9ng: C\u01a1 Ch\u1ebf Gi\u00e1m S\u00e1t Ch\u1ee7 \u0110\u1ed9ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>UFD<\/strong> ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch g\u1eedi c\u00e1c g\u00f3i th\u0103m d\u00f2 \u0111\u1ecbnh k\u1ef3 t\u1eeb thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i (v\u00ed d\u1ee5: b\u1ed9 chuy\u1ec3n m\u1ea1ch truy c\u1eadp) \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u1edf ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n (v\u00ed d\u1ee5: b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn l\u00f5i ho\u1eb7c m\u1ed9t \u0111\u1ecba ch\u1ec9 IP internet \u0111\u00e1ng tin c\u1eady nh\u01b0 <mark data-color=\"var(--qc-color21)\" style=\"background-color: var(--qc-color21); color: inherit;\">8.8.8.8<\/mark>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 ch\u1ebf n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>C\u1ea5u h\u00ecnh:<\/strong> B\u1ea1n \u0111\u1ecbnh ngh\u0129a m\u1ed9t ch\u00ednh s\u00e1ch UFD tr\u00ean c\u1ed5ng chuy\u1ec3n m\u1ea1ch, ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch v\u00e0 ng\u01b0\u1ee1ng th\u1ea5t b\u1ea1i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Vi\u1ec7c th\u0103m d\u00f2:<\/strong> B\u1ed9 chuy\u1ec3n m\u1ea1ch g\u1eedi c\u00e1c g\u00f3i th\u0103m d\u00f2 (nh\u01b0 l\u1ec7nh ping ICMP) theo c\u00e1c kho\u1ea3ng th\u1eddi gian \u0111\u1ec1u \u0111\u1eb7n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Gi\u00e1m s\u00e1t ng\u01b0\u1ee1ng:<\/strong> N\u00f3 l\u1eafng nghe ph\u1ea3n h\u1ed3i. N\u1ebfu s\u1ed1 l\u1ea7n ph\u1ea3n h\u1ed3i b\u1ecb b\u1ecf l\u1ee1 li\u00ean ti\u1ebfp \u0111\u1ea1t \u0111\u1ebfn ng\u01b0\u1ee1ng \u0111\u00e3 c\u1ea5u h\u00ecnh, UFD s\u1ebd k\u00edch ho\u1ea1t m\u1ed9t h\u00e0nh \u0111\u1ed9ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u00e0nh \u0111\u1ed9ng:<\/strong> B\u1ed9 chuy\u1ec3n m\u1ea1ch s\u1ebd t\u1eaft logic c\u1ed5ng b\u1ecb \u1ea3nh h\u01b0\u1edfng, bu\u1ed9c l\u01b0u l\u01b0\u1ee3ng ph\u1ea3i \u0111\u1ecbnh tuy\u1ebfn l\u1ea1i qua \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i d\u1ef1 ph\u00f2ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh s\u1eb5n.<\/p><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74.webp\" alt=\"Uplink Failure Detection (UFD)\" class=\"wp-image-4240\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e6213baf7bff4d78b27675998f216e74-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng sau so s\u00e1nh c\u00e1c ch\u1ebf \u0111\u1ed9 v\u1eadn h\u00e0nh UFD ch\u00ednh:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Ch\u1ebf \u0111\u1ed9 UFD<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u00f9 h\u1ee3p nh\u1ea5t cho<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ef1a tr\u00ean th\u0103m d\u00f2<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ee7 \u0111\u1ed9ng g\u1eedi c\u00e1c g\u00f3i ICMP ho\u1eb7c ARP \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch \u0111\u1ec3 x\u00e1c minh kh\u1ea3 n\u0103ng truy c\u1eadp.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u ki\u1ec3m tra nghi\u00eam ng\u1eb7t kh\u1ea3 n\u0103ng truy c\u1eadp IP t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ch\u1ec9 d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ec9 d\u1ef1a v\u00e0o tr\u1ea1ng th\u00e1i l\u1edbp v\u1eadt l\u00fd (L\u1edbp 1) c\u1ee7a c\u1ed5ng (v\u00ed d\u1ee5: \u201cli\u00ean k\u1ebft b\u1ecb ng\u1eaft\u201d).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c t\u00ecnh hu\u1ed1ng \u0111\u01a1n gi\u1ea3n, trong \u0111\u00f3 vi\u1ec7c ng\u1eaft c\u00e1p v\u1eadt l\u00fd l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft doanh nghi\u1ec7p t\u00ecm ki\u1ebfm kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i th\u1ef1c s\u1ef1, UFD d\u1ef1a tr\u00ean th\u0103m d\u00f2 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb v\u00ec n\u00f3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c nhi\u1ec1u lo\u1ea1i s\u1ef1 c\u1ed1 h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc V\u1ecb anh h\u00f9ng th\u1ea7m l\u1eb7ng: C\u00e1ch M\u00f4-\u0111un Quang \u1ea2nh H\u01b0\u1edfng \u0110\u1ebfn Hi\u1ec7u Qu\u1ea3 C\u1ee7a UFD<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecf qua: ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>m\u00f4-\u0111un b\u1ed9 thu ph\u00e1t quang<\/strong><\/a>. UFD l\u00e0 m\u1ed9t giao th\u1ee9c logic, nh\u01b0ng n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o l\u1edbp v\u1eadt l\u00fd \u0111\u1ec3 truy\u1ec1n c\u00e1c g\u00f3i th\u0103m d\u00f2. M\u1ed9t m\u00f4-\u0111un quang b\u1ecb l\u1ed7i ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p c\u00f3 th\u1ec3 t\u1ea1o ra t\u00ecnh hu\u1ed1ng nan gi\u1ea3i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Hi\u1ec7u su\u1ea5t k\u00e9m:<\/strong> M\u1ed9t m\u00f4-\u0111un quang k\u00e9m c\u00f3 th\u1ec3 c\u00f3 m\u1ee9c c\u00f4ng su\u1ea5t dao \u0111\u1ed9ng ho\u1eb7c t\u1ef7 l\u1ec7 l\u1ed7i cao. N\u00f3 c\u00f3 th\u1ec3 duy tr\u00ec tr\u1ea1ng th\u00e1i \u201cli\u00ean k\u1ebft b\u1eadt\u201d nh\u01b0ng l\u00e0m m\u1ea5t m\u1ed9t t\u1ef7 l\u1ec7 l\u1edbn g\u00f3i tin, bao g\u1ed3m c\u1ea3 g\u00f3i th\u0103m d\u00f2 UFD. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y \u2014 khi UFD li\u00ean t\u1ee5c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i c\u1ed5ng gi\u1eefa b\u1eadt v\u00e0 t\u1eaft.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Th\u1ea5t b\u1ea1i ho\u00e0n to\u00e0n:<\/strong> S\u1ef1 c\u1ed1 \u0111\u1ed9t ng\u1ed9t v\u00e0 to\u00e0n di\u1ec7n c\u1ee7a m\u00f4-\u0111un quang s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 ki\u1ec7n \u201cli\u00ean k\u1ebft b\u1ecb ng\u1eaft\u201d, \u0111i\u1ec1u m\u00e0 ngay c\u1ea3 UFD c\u01a1 b\u1ea3n c\u0169ng c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n. Tuy nhi\u00ean, s\u1ef1 suy gi\u1ea3m d\u1ea7n d\u1ea7n th\u00ec kh\u00f3 ph\u00e1t hi\u1ec7n h\u01a1n.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 n\u01a1i vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ed9t nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady nh\u01b0<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> t\u1ea1o n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t ho\u00e0n to\u00e0n.<br>. <strong>c\u00e1c module quang LINK-PP<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u n\u0103ng, cung c\u1ea5p d\u1eef li\u1ec7u ch\u00ednh x\u00e1c<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM)<\/strong><\/a> gi\u00fap b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng th\u00f4ng tin s\u00e2u s\u1eafc v\u1ec1 t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a k\u1ebft n\u1ed1i v\u1eadt l\u00fd<br> <em>tr\u01b0\u1edbc khi<\/em> n\u00f3 s\u1ebd k\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n UFD.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For instance, deploying a <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\"><strong>QSFP28 100G LR4<br><\/strong><\/a> ho\u1eb7c m\u1ed9t <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472000.htm\"><strong>QSFP-DD 400G FR4<br><\/strong><\/a> b\u1ed9 thu ph\u00e1t \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao c\u1ee7a b\u1ea1n c\u00f3 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00e1c g\u00f3i tin ki\u1ec3m tra c\u1ee7a UFD \u0111i qua k\u1ebft n\u1ed1i m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch gi\u00e1m s\u00e1t d\u1eef li\u1ec7u DDM t\u1eeb c\u00e1c b\u1ed9<br> <strong>LINK-PP<\/strong> quang\u2014nh\u01b0 nhi\u1ec7t \u0111\u1ed9, c\u00f4ng su\u1ea5t ph\u00e1t (TX) v\u00e0 c\u00f4ng su\u1ea5t thu (RX)\u2014b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n, thay th\u1ebf m\u00f4-\u0111un<br> <em>tr\u01b0\u1edbc khi<\/em> n\u00f3 g\u00e2y ra c\u1ea3nh b\u00e1o sai UFD ho\u1eb7c, t\u1ec7 h\u01a1n n\u1eefa, s\u1ef1 c\u1ed1 th\u1ef1c s\u1ef1.<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc Tri\u1ec3n khai UFD: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e3 s\u1eb5n s\u00e0ng lo\u1ea1i b\u1ecf v\u0129nh vi\u1ec5n c\u00e1c s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i tr\u00ean kh\u00f4ng? M\u1eb7c d\u00f9 c\u00e1c l\u1ec7nh CLI c\u1ee5 th\u1ec3 thay \u0111\u1ed5i t\u00f9y theo nh\u00e0 cung c\u1ea5p (Cisco, Arista, Juniper, v.v.), quy tr\u00ecnh logic l\u00e0 nh\u01b0 nhau.<br>.<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c k\u1ebft n\u1ed1i l\u00ean quan tr\u1ecdng:<br><\/strong> X\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c c\u1ed5ng m\u00e0 n\u1ebfu b\u1ecb l\u1ed7i s\u1ebd l\u00e0m c\u00f4 l\u1eadp thi\u1ebft b\u1ecb.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>X\u00e1c \u0111\u1ecbnh t\u00ednh d\u1ef1 ph\u00f2ng:<br><\/strong> \u0110\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i l\u00ean d\u1ef1 ph\u00f2ng. UFD s\u1ebd v\u00f4 d\u1ee5ng n\u1ebfu kh\u00f4ng c\u00f3 \u0111\u00edch chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng.<br>.<\/p><\/li><li><p style=\"margin: 0px 0px 8px;\"><strong>C\u1ea5u h\u00ecnh ch\u00ednh s\u00e1ch UFD:<br><\/strong><\/p><ul><li><p style=\"margin: 0px;\">Thi\u1ebft l\u1eadp \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch (m\u1ed9t th\u1ee9 g\u00ec \u0111\u00f3 c\u00f3 t\u00ednh kh\u1ea3 d\u1ee5ng cao trong \u0111\u01b0\u1eddng d\u1eabn upstream c\u1ee7a b\u1ea1n).<\/p><\/li><li><p style=\"margin: 0px;\">X\u00e1c \u0111\u1ecbnh kho\u1ea3ng th\u1eddi gian ki\u1ec3m tra (probe interval) v\u00e0 ng\u01b0\u1ee1ng th\u1ea5t b\u1ea1i.<\/p><\/li><li><p style=\"margin: 0px;\">Ch\u1ec9 \u0111\u1ecbnh h\u00e0nh \u0111\u1ed9ng (v\u00ed d\u1ee5: \u201cshutdown-port\u201d).<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>\u00c1p d\u1ee5ng Ch\u00ednh s\u00e1ch:<\/strong> G\u00e1n ch\u00ednh s\u00e1ch UFD v\u00e0o c\u00e1c c\u1ed5ng uplink v\u1eadt l\u00fd th\u00edch h\u1ee3p.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ki\u1ec3m tra m\u1ed9t c\u00e1ch nghi\u00eam ng\u1eb7t:<\/strong> \u0110\u1eebng bao gi\u1edd cho r\u1eb1ng n\u00f3 ho\u1ea1t \u0111\u1ed9ng. H\u00e3y m\u00f4 ph\u1ecfng th\u1ee7 c\u00f4ng s\u1ef1 c\u1ed1 b\u1eb1ng c\u00e1ch ch\u1eb7n l\u1ec7nh ping t\u1edbi \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch v\u00e0 quan s\u00e1t qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng (failover) di\u1ec5n ra m\u1ed9t c\u00e1ch m\u01b0\u1ee3t m\u00e0.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&gt; \ud83d\ude80 S\u1eb5n s\u00e0ng X\u00e2y d\u1ef1ng M\u1ed9t M\u1ea1ng L\u01b0\u1edbi B\u1ea5t Kh\u1ea3 X\u00e2m Ph\u1ea1m?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t chu\u1ed7i ch\u1ec9 m\u1ea1nh ngang v\u1edbi m\u1eaft x\u00edch y\u1ebfu nh\u1ea5t c\u1ee7a n\u00f3. \u0110\u1eebng \u0111\u1ec3 s\u1ef1 c\u1ed1 uplink \u00e2m th\u1ea7m tr\u1edf th\u00e0nh \u0111i\u1ec3m y\u1ebfu c\u1ee7a b\u1ea1n. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p logic th\u00f4ng minh c\u1ee7a Ph\u00e1t hi\u1ec7n S\u1ef1 c\u1ed1 Uplink (Uplink Failure Detection) v\u1edbi \u0111\u1ed9 tin c\u1eady v\u1eadt l\u00fd c\u1ee7a <strong>LINK-PP<\/strong>\u2018hi\u1ec7u n\u0103ng cao c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>module quang<br><\/strong><\/a>, b\u1ea1n t\u1ea1o ra m\u1ed9t m\u1ea1ng l\u01b0\u1edbi kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, m\u00e0 th\u1ef1c s\u1ef1 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdc C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o h\u1ed7 tr\u1ee3 Ph\u00e1t hi\u1ec7n S\u1ef1 c\u1ed1 Uplink (Uplink Failure Detection)?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1ebd t\u00ecm th\u1ea5y UFD tr\u00ean h\u1ea7u h\u1ebft c\u00e1c switch \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd. Nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng doanh nghi\u1ec7p, nh\u01b0 nh\u1eefng thi\u1ebft b\u1ecb t\u1eeb Juniper v\u00e0 Dell, h\u1ed7 tr\u1ee3 UFD. Lu\u00f4n ki\u1ec3m tra t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn c\u1ee7a thi\u1ebft b\u1ecb \u0111\u1ec3 x\u00e1c nh\u1eadn t\u00ednh n\u0103ng n\u00e0y \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec x\u1ea3y ra khi UFD ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 uplink?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UFD c\u00f3 th\u1ec3 t\u1eaft c\u00e1c c\u1ed5ng downlink ho\u1eb7c g\u1eedi c\u1ea3nh b\u00e1o. B\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o nhanh ch\u00f3ng. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n ng\u0103n ch\u1eb7n c\u00e1c v\u00f2ng l\u1eb7p m\u1ea1ng v\u00e0 gi\u1eef an to\u00e0n cho m\u1ea1ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u00f3m tr\u1ea1ng th\u00e1i uplink (uplink-state group) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00f3m tr\u1ea1ng th\u00e1i uplink l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c c\u1ed5ng uplink m\u00e0 b\u1ea1n nh\u00f3m l\u1ea1i v\u1edbi nhau. UFD theo d\u00f5i c\u00e1c c\u1ed5ng n\u00e0y nh\u01b0 m\u1ed9t \u0111\u01a1n v\u1ecb duy nh\u1ea5t. N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c li\u00ean k\u1ebft trong nh\u00f3m \u0111\u1ec1u g\u1eb7p s\u1ef1 c\u1ed1, UFD s\u1ebd th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n thu \u0111\u01b0\u1ee3c nh\u1eefng l\u1ee3i \u00edch g\u00ec khi s\u1eed d\u1ee5ng UFD?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 nhanh h\u01a1n, \u0111\u1ed9 tin c\u1eady m\u1ea1ng cao h\u01a1n v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u00edt h\u01a1n. UFD gi\u00fap b\u1ea1n duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng kinh doanh v\u00e0 gi\u1eef cho ng\u01b0\u1eddi d\u00f9ng lu\u00f4n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n n\u00ean l\u00e0m g\u00ec n\u1ebfu UFD kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra c\u1ea5u h\u00ecnh c\u1ee7a b\u1ea1n. \u0110\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111\u00e3 b\u1eadt ch\u1ee9c n\u0103ng theo d\u00f5i (tracking) v\u00e0 nh\u00f3m \u0111\u00fang c\u00e1c c\u1ed5ng. Xem l\u1ea1i nh\u1eadt k\u00fd (logs) \u0111\u1ec3 t\u00ecm l\u1ed7i. N\u1ebfu v\u1ea5n \u0111\u1ec1 v\u1eabn ti\u1ebfp di\u1ec5n, h\u00e3y li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ph\u00e1t hi\u1ec7n S\u1ef1 c\u1ed1 Li\u00ean k\u1ebft L\u00ean nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh c\u00e1c s\u1ef1 c\u1ed1 li\u00ean k\u1ebft m\u1ea1ng, cho ph\u00e9p ph\u1ea3n \u1ee9ng nhanh nh\u1eb1m ng\u0103n ng\u1eeba gi\u00e1n \u0111o\u1ea1n v\u00e0 duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c ho\u1ea1t \u0111\u1ed9ng kinh doanh.<\/p>","protected":false},"author":1,"featured_media":4239,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[13,14,16,18,24,26],"class_list":["post-4241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-100g-modules","tag-10g-sfp-transceivers","tag-link-pp-25g-sfp28-optical-modules","tag-40g-qsfp-transceivers","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4241"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4241\/revisions"}],"predecessor-version":[{"id":10980,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4241\/revisions\/10980"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4239"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}