{"id":3126,"date":"2026-03-10T00:00:00","date_gmt":"2026-03-10T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/sfp-troubleshooting-quick-checklist\/"},"modified":"2026-06-22T04:03:25","modified_gmt":"2026-06-22T04:03:25","slug":"sfp-troubleshooting-quick-checklist","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-troubleshooting-quick-checklist","title":{"rendered":"Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP: S\u1eeda l\u1ed7i \u201ckh\u00f4ng k\u1ebft n\u1ed1i\u201d, l\u1ed7i ph\u00e1t hi\u1ec7n v\u00e0 s\u1ef1 c\u1ed1 c\u00e1p quang"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1.jpg\" alt=\"SFP Troubleshooting\" class=\"wp-image-3116\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7883a3134c5482094c314afd1e02fd1-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng Ethernet v\u00e0 s\u1ee3i quang hi\u1ec7n \u0111\u1ea1i, <strong>B\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm th\u00e1o \u0111\u01b0\u1ee3c (SFP)<\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>SFP<\/strong><\/a><strong>)<\/strong> \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong vi\u1ec7c cho ph\u00e9p k\u1ebft n\u1ed1i quang linh ho\u1ea1t gi\u1eefa c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 m\u00e1y ch\u1ee7. Tuy nhi\u00ean, ngay c\u1ea3 trong c\u00e1c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u1ef9 l\u01b0\u1ee1ng, k\u1ef9 s\u01b0 th\u01b0\u1eddng xuy\u00ean g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 c\u00e1c m\u00f4-\u0111un SFP kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n, kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o li\u00ean k\u1ebft sau khi l\u1eafp \u0111\u1eb7t, ho\u1eb7c k\u1ebft n\u1ed1i s\u1ee3i quang kh\u00f4ng \u1ed5n \u0111\u1ecbnh. Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n hi\u1ec7u su\u1ea5t m\u1ea1ng v\u00e0 \u0111\u00f2i h\u1ecfi quy tr\u00ecnh g\u1ee1 l\u1ed7i h\u1ec7 th\u1ed1ng \u0111\u1ec3 kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn SFP kh\u00f4ng do ch\u00ednh m\u00f4-\u0111un g\u00e2y ra m\u00e0 do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 nhi\u1ec5m b\u1ea9n s\u1ee3i quang, c\u1ef1c t\u00ednh c\u00e1p sai, quang h\u1ecdc kh\u00f4ng t\u01b0\u01a1ng th\u00edch ho\u1eb7c sai l\u1ec7ch c\u1ea5u h\u00ecnh. M\u1ed9t quy tr\u00ecnh g\u1ee1 l\u1ed7i c\u00f3 c\u1ea5u tr\u00fac\u2014b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c ki\u1ec3m tra v\u1eadt l\u00fd c\u01a1 b\u1ea3n v\u00e0 ti\u1ebfn t\u1edbi ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc\u2014c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 ng\u0103n ng\u1eeba vi\u1ec7c thay th\u1ebf ph\u1ea7n c\u1ee9ng kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t khung g\u1ee1 l\u1ed7i SFP th\u1ef1c ti\u1ec5n, t\u1eadp trung v\u00e0o k\u1ef9 s\u01b0, gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn bao g\u1ed3m <strong>kh\u00f4ng c\u00f3 li\u00ean k\u1ebft, l\u1ed7i ph\u00e1t hi\u1ec7n m\u00f4-\u0111un v\u00e0 s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i s\u1ee3i quang<\/strong>. N\u00f3 c\u0169ng gi\u1edbi thi\u1ec7u c\u00e1c l\u1ec7nh ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng doanh nghi\u1ec7p l\u1edbn nh\u01b0 Cisco, Juniper v\u00e0 Brocade \u0111\u1ec3 ph\u00e2n t\u00edch tr\u1ea1ng th\u00e1i b\u1ed9 thu ph\u00e1t v\u00e0 m\u1ee9c c\u00f4ng su\u1ea5t quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd h\u1ecdc c\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ea9n \u0111o\u00e1n <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> c\u00e1c m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb m\u1ea1ng ph\u00e1t hi\u1ec7n<\/p><\/li><li><p>Kh\u1eafc ph\u1ee5c t\u00ecnh tr\u1ea1ng kh\u00f4ng c\u00f3 li\u00ean k\u1ebft ho\u1eb7c k\u1ebft n\u1ed1i s\u1ee3i quang b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/p><\/li><li><p>S\u1eed d\u1ee5ng d\u1eef li\u1ec7u Gi\u00e1m s\u00e1t Quang K\u1ef9 thu\u1eadt s\u1ed1 (DOM) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c s\u1ef1 c\u1ed1 t\u00edn hi\u1ec7u<\/p><\/li><li><p>\u00c1p d\u1ee5ng c\u00e1c l\u1ec7nh CLI \u0111\u1eb7c th\u00f9 theo nh\u00e0 cung c\u1ea5p \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n s\u00e2u h\u01a1n<\/p><\/li><li><p>Tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba nh\u1eb1m c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a SFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n \u0111ang qu\u1ea3n l\u00fd m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p hay \u0111\u01b0\u1eddng truy\u1ec1n s\u1ee3i quang n\u1ec1n t\u1ea3ng, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch g\u1ee1 l\u1ed7i m\u00f4-\u0111un SFP m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi k\u1ef9 s\u01b0 m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >G\u1ee1 l\u1ed7i SFP l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh ch\u1ea9n \u0111o\u00e1n v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn b\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm th\u00e1o \u0111\u01b0\u1ee3c (SFP) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">servers<\/a>, and <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">card giao di\u1ec7n m\u1ea1ng<\/a> (NIC). C\u00e1c m\u00f4-\u0111un quang nh\u1ecf g\u1ecdn n\u00e0y cho ph\u00e9p k\u1ebft n\u1ed1i s\u1ee3i quang linh ho\u1ea1t, nh\u01b0ng s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 x\u1ea3y ra do c\u00e1c y\u1ebfu t\u1ed1 ph\u1ea7n c\u1ee9ng, c\u00e1p, t\u01b0\u01a1ng th\u00edch ho\u1eb7c c\u1ea5u h\u00ecnh.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68.jpg\" alt=\"What Is SFP Troubleshooting?\" class=\"wp-image-3117\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/912bb1848e094a63bb2c84110c26fa68-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476862.htm\">m\u00f4-\u0111un SFP<\/a> m\u00f4-\u0111un SFP kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch, k\u1ef9 s\u01b0 m\u1ea1ng th\u01b0\u1eddng th\u1ef1c hi\u1ec7n m\u1ed9t lo\u1ea1t ki\u1ec3m tra\u2014bao g\u1ed3m ki\u1ec3m tra v\u1eadt l\u00fd, x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc\u2014\u0111\u1ec3 x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c tri\u1ec7u ch\u1ee9ng ph\u1ed5 bi\u1ebfn c\u1ee7a s\u1ef1 c\u1ed1 SFP bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u00f4-\u0111un SFP kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n<\/strong> b\u1edfi thi\u1ebft b\u1ecb sau khi c\u1eafm v\u00e0o<\/p><\/li><li><p><strong>Kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o li\u00ean k\u1ebft<\/strong> ho\u1eb7c giao di\u1ec7n v\u1eabn \u1edf tr\u1ea1ng th\u00e1i t\u1eaft<\/p><\/li><li><p><strong>Nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft<\/strong> ho\u1eb7c k\u1ebft n\u1ed1i m\u1ea1ng b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/p><\/li><li><p><strong>C\u1ea3nh b\u00e1o c\u00f4ng su\u1ea5t quang nh\u1eadn (Rx) th\u1ea5p<\/strong> trong ch\u1ea9n \u0111o\u00e1n<\/p><\/li><li><p><strong>M\u00f4-\u0111un thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/strong> ho\u1eb7c l\u1ed7i t\u01b0\u01a1ng th\u00edch trong nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c s\u1ef1 c\u1ed1 n\u00e0y c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n ti\u1ec1m \u1ea9n, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ee3i quang b\u1ecb nhi\u1ec5m b\u1ea9n, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/common-fiber-connector-types-optical-transceivers\/\">c\u00e1p quang<\/a>, lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang, c\u00e1c m\u00f4-\u0111un quang kh\u00f4ng t\u01b0\u01a1ng th\u00edch, l\u1ed7i c\u1ea5u h\u00ecnh b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c h\u1ecfng ph\u1ea7n c\u1ee9ng<strong>s<\/strong>. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang nguy\u00ean nh\u00e2n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 kh\u00f4i ph\u1ee5c k\u1ebft n\u1ed1i m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 tr\u00e1nh thay th\u1ebf thi\u1ebft b\u1ecb kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Danh s\u00e1ch ki\u1ec3m tra nhanh g\u1ee1 l\u1ed7i SFP (t\u1eebng b\u01b0\u1edbc)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n ch\u1ea9n \u0111o\u00e1n n\u00e2ng cao, k\u1ef9 s\u01b0 m\u1ea1ng n\u00ean tu\u00e2n theo m\u1ed9t tr\u00ecnh t\u1ef1 g\u1ee1 l\u1ed7i c\u00f3 c\u1ea5u tr\u00fac. Nhi\u1ec1u s\u1ef1 c\u1ed1 SFP\u2014nh\u01b0 <em>kh\u00f4ng c\u00f3 li\u00ean k\u1ebft, l\u1ed7i ph\u00e1t hi\u1ec7n m\u00f4-\u0111un ho\u1eb7c k\u1ebft n\u1ed1i b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/em>\u2014c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch ki\u1ec3m tra c\u00e1c y\u1ebfu t\u1ed1 v\u1eadt l\u00fd v\u00e0 c\u1ea5u h\u00ecnh c\u01a1 b\u1ea3n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb.jpg\" alt=\"Quick SFP Troubleshooting Checklist\" class=\"wp-image-3118\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72a253394349402e91b53b041d1596bb-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Danh s\u00e1ch ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc sau \u0111\u00e2y gi\u00fap nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a c\u00e1c s\u1ef1 c\u1ed1 SFP ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u1eadt l\u00fd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c c\u1eafm \u0111\u1ea7y \u0111\u1ee7 v\u00e0 kh\u00f3a ch\u1eafc ch\u1eafn v\u00e0o c\u1ed5ng. Vi\u1ec7c c\u1eafm kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 khi\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c b\u1ed9 thu ph\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c minh c\u00e1c \u0111i\u1ec3m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>The <strong>ch\u1ed1t kh\u00f3a ho\u1eb7c ch\u1ed1t g\u1eadp c\u1ee7a m\u00f4-\u0111un<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00f3ng ho\u00e0n to\u00e0n<\/p><\/li><li><p>The <strong>\u0111\u00e8n LED ch\u1ec9 th\u1ecb c\u1ed5ng b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/strong> hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i d\u1ef1 ki\u1ebfn<\/p><\/li><li><p>The <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-21645-sfp-cages-connectors.htm\"><strong>ng\u0103n ch\u1ee9a SFP<\/strong><\/a> kh\u00f4ng b\u1ecb cong, l\u1ecfng l\u1ebbo ho\u1eb7c h\u01b0 h\u1ecfng v\u1ec1 m\u1eb7t v\u1eadt l\u00fd<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c c\u1eafm m\u00f4-\u0111un kh\u00f4ng \u0111\u00fang l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra l\u1ed7i ph\u00e1t hi\u1ec7n m\u00f4-\u0111un SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra c\u00e1p v\u00e0 \u0111\u1ea7u n\u1ed1i s\u1ee3i quang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ea9n ho\u1eb7c h\u01b0 h\u1ecfng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u quang v\u00e0 g\u00e2y ra <strong>m\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft ho\u1eb7c m\u1ea5t t\u00edn hi\u1ec7u<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc ki\u1ec3m tra khuy\u1ebfn ngh\u1ecb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i s\u1ee3i quang b\u1eb1ng k\u00ednh hi\u1ec3n vi chuy\u00ean d\u1ee5ng cho s\u1ee3i quang<\/p><\/li><li><p>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i b\u1eb1ng b\u00fat l\u00e0m s\u1ea1ch s\u1ee3i quang ho\u1eb7c kh\u0103n lau kh\u00f4ng x\u01a1<\/p><\/li><li><p>Thay th\u1ebf c\u00e1c d\u00e2y n\u1ed1i b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c b\u1ecb u\u1ed1n cong qu\u00e1 m\u1ee9c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 c\u00e1c h\u1ea1t b\u1ee5i vi m\u00f4 c\u0169ng c\u00f3 th\u1ec3 ch\u1eb7n t\u00edn hi\u1ec7u quang v\u00e0 d\u1eabn \u0111\u1ebfn c\u1ea3nh b\u00e1o c\u00f4ng su\u1ea5t Rx th\u1ea5p ho\u1eb7c li\u00ean k\u1ebft b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a lo\u1ea1i s\u1ee3i quang v\u00e0 b\u01b0\u1edbc s\u00f3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n s\u1ee3i quang \u0111\u1ec1u ph\u1ea3i s\u1eed d\u1ee5ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\"><strong>B\u1ed9 thu ph\u00e1t quang t\u01b0\u01a1ng th\u00edch<\/strong><\/a>. Vi\u1ec7c s\u1eed d\u1ee5ng quang h\u1ecdc kh\u00f4ng kh\u1edbp l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i li\u00ean k\u1ebft.<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea3i kh\u1edbp nhau<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF) so v\u1edbi s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 (MMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\">B\u01b0\u1edbc s\u00f3ng<br><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850 nm \/ 1310 nm \/ 1550 nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1G \/ 10G \/ 25G<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un kh\u00f4ng t\u01b0\u01a1ng th\u00edch ho\u1eb7c lo\u1ea1i s\u1ee3i quang kh\u00f4ng kh\u1edbp c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>kh\u00f4ng c\u00f3 li\u00ean k\u1ebft, k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c hi\u1ec7u su\u1ea5t suy gi\u1ea3m<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Th\u1ef1c hi\u1ec7n ki\u1ec3m tra loopback<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra loopback gi\u00fap x\u00e1c \u0111\u1ecbnh xem s\u1ef1 c\u1ed1 c\u00f3 li\u00ean quan \u0111\u1ebfn <strong>m\u00f4-\u0111un SFP, c\u1ed5ng b\u1ed9 chuy\u1ec3n m\u1ea1ch hay c\u00e1p s\u1ee3i quang b\u00ean ngo\u00e0i hay kh\u00f4ng<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>N\u1ed1i c\u1ed5ng <strong>Tx (ph\u00e1t)<\/strong> and <strong>Rx (thu)<\/strong> b\u1eb1ng c\u00e1p loopback.<\/p><\/li><li><p>Ki\u1ec3m tra xem giao di\u1ec7n c\u00f3 b\u00e1o tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft ho\u1ea1t \u0111\u1ed9ng hay kh\u00f4ng.<\/p><\/li><li><p>N\u1ebfu li\u00ean k\u1ebft tr\u1edf n\u00ean ho\u1ea1t \u0111\u1ed9ng, m\u00f4-\u0111un SFP v\u00e0 c\u1ed5ng \u0111ang ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang, v\u00e0 v\u1ea5n \u0111\u1ec1 c\u00f3 kh\u1ea3 n\u0103ng n\u1eb1m \u1edf \u0111\u01b0\u1eddng truy\u1ec1n s\u1ee3i quang b\u00ean ngo\u00e0i.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra v\u00f2ng l\u1eb7p (loopback) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p nhanh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh l\u1ed7i ph\u1ea7n c\u1ee9ng trong qu\u00e1 tr\u00ecnh g\u1ee1 r\u1ed1i m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra c\u1ea5u h\u00ecnh b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, c\u00e1c m\u00f4-\u0111un SFP kh\u00f4ng kh\u1edfi t\u1ea1o \u0111\u01b0\u1ee3c do c\u1ea5u h\u00ecnh c\u1ed5ng kh\u00f4ng ch\u00ednh x\u00e1c <strong>c\u00e0i \u0111\u1eb7t c\u1ea5u h\u00ecnh c\u1ed5ng<\/strong> tr\u00ean b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c minh c\u00e1c tham s\u1ed1 c\u1ea5u h\u00ecnh sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e0i \u0111\u1eb7t t\u1ed1c \u0111\u1ed9 c\u1ed5ng<\/strong> (v\u00ed d\u1ee5, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/blog\/what-is-the-difference-between-sfp-and-sfp.htm\">1G so v\u1edbi 10G<\/a>)<\/p><\/li><li><p><strong>Tr\u1ea1ng th\u00e1i t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng (auto-negotiation)<\/strong><\/p><\/li><li><p>Giao di\u1ec7n c\u00f3 \u0111ang b\u1ecb <strong>t\u1eaft qu\u1ea3n tr\u1ecb (administratively shut down) hay kh\u00f4ng<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ed5ng c\u1ea5u h\u00ecnh sai c\u00f3 th\u1ec3 ng\u0103n m\u00f4-\u0111un SFP thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i ngay c\u1ea3 khi ph\u1ea7n c\u1ee9ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tu\u00e2n theo danh s\u00e1ch ki\u1ec3m tra g\u1ee1 r\u1ed1i c\u00f3 c\u1ea5u tr\u00fac s\u1ebd gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn SFP. B\u1eb1ng c\u00e1ch b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c ki\u1ec3m tra v\u1eadt l\u00fd c\u01a1 b\u1ea3n v\u00e0 d\u1ea7n chuy\u1ec3n sang ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc c\u0169ng nh\u01b0 x\u00e1c minh c\u1ea5u h\u00ecnh, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u1ed1c c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, ph\u1ea7n l\u1edbn c\u00e1c s\u1ef1 c\u1ed1 SFP li\u00ean quan \u0111\u1ebfn vi\u1ec7c l\u1eafp \u0111\u1eb7t m\u00f4-\u0111un <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/5-steps-transceiver-installation-success\/\">kh\u00f4ng \u0111\u00fang c\u00e1ch<\/a>, \u0111\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ecb nhi\u1ec5m b\u1ea9n, thi\u1ebft b\u1ecb quang kh\u00f4ng t\u01b0\u01a1ng th\u00edch ho\u1eb7c sai l\u1ec7ch c\u1ea5u h\u00ecnh. Vi\u1ec7c th\u1ef1c hi\u1ec7n ki\u1ec3m tra v\u00f2ng l\u1eb7p (loopback) v\u00e0 x\u00e1c minh c\u00e0i \u0111\u1eb7t b\u1ed9 chuy\u1ec3n m\u1ea1ch th\u01b0\u1eddng gi\u00fap x\u00e1c \u0111\u1ecbnh xem s\u1ef1 c\u1ed1 b\u1eaft ngu\u1ed3n t\u1eeb b\u1ed9 thu ph\u00e1t (transceiver), \u0111\u01b0\u1eddng d\u1eabn s\u1ee3i quang hay thi\u1ebft b\u1ecb m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc n\u00e0y nh\u01b0 m\u1ed9t quy tr\u00ecnh g\u1ee1 r\u1ed1i ti\u00eau chu\u1ea9n gi\u00fap \u0111\u1ea3m b\u1ea3o vi\u1ec7c x\u00e1c \u0111\u1ecbnh s\u1ef1 c\u1ed1 nhanh h\u01a1n, gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a \u0111\u01b0\u1eddng d\u1eabn s\u1ee3i quang.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1c s\u1ef1 c\u1ed1 SFP ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 trong c\u00e1c m\u1ea1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">B\u1ed9 thu ph\u00e1t SFP<\/a> \u0111\u00f4i khi v\u1eabn g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 v\u1ec1 k\u1ebft n\u1ed1i. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng s\u1ef1 c\u1ed1 SFP ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c c\u1ee7a ch\u00fang gi\u00fap k\u1ef9 s\u01b0 ch\u1ea9n \u0111o\u00e1n v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 nhanh ch\u00f3ng m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd.jpg\" alt=\"Common SFP Issues and How to Fix Them\" class=\"wp-image-3119\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7782b177279c45819b30f34414016dbd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 SFP \u0111i\u1ec3n h\u00ecnh c\u00f9ng c\u00e1c h\u00e0nh \u0111\u1ed9ng g\u1ee1 r\u1ed1i \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00f4ng ph\u00e1t hi\u1ec7n th\u1ea5y m\u00f4-\u0111un SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p nh\u1ea5t x\u1ea3y ra khi thi\u1ebft b\u1ecb m\u1ea1ng kh\u00f4ng nh\u1eadn ra m\u00f4-\u0111un SFP \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un SFP kh\u00f4ng t\u01b0\u01a1ng th\u00edch, kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ed9 chuy\u1ec3n m\u1ea1ch h\u1ed7 tr\u1ee3<\/p><\/li><li><p>Ph\u1ea7n m\u1ec1m\u56fa\u4ef6 (firmware) kh\u00f3a nh\u00e0 s\u1ea3n xu\u1ea5t t\u1eeb ch\u1ed1i thi\u1ebft b\u1ecb quang c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li><li><p>D\u1eef li\u1ec7u EEPROM c\u1ee7a m\u00f4-\u0111un b\u1ecb l\u1ed7i ho\u1eb7c h\u1ecfng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh m\u00f4-\u0111un v\u1edbi <strong>ma tr\u1eadn t\u01b0\u01a1ng th\u00edch c\u1ee7a thi\u1ebft b\u1ecb<\/strong><\/p><\/li><li><p>Th\u1eed nghi\u1ec7m c\u1ed5ng b\u1eb1ng m\u1ed9t m\u00f4-\u0111un SFP \u0111\u00e3 bi\u1ebft l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/p><\/li><li><p>Xem l\u1ea1i nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng \u0111\u1ec3 t\u00ecm c\u00e1c th\u00f4ng b\u00e1o l\u1ed7i li\u00ean quan \u0111\u1ebfn thi\u1ebft b\u1ecb thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Cisco, Juniper ho\u1eb7c Brocade s\u1ebd t\u1ea1o c\u00e1c m\u1ee5c nh\u1eadt k\u00fd khi c\u1eafm m\u00f4-\u0111un SFP kh\u00f4ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o k\u1ebft n\u1ed1i (No Link Light)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn kh\u00e1c x\u1ea3y ra khi m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n nh\u01b0ng giao di\u1ec7n v\u1eabn <strong>\u1edf tr\u1ea1ng th\u00e1i xu\u1ed1ng (down) v\u00e0 kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o k\u1ebft n\u1ed1i<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3o c\u1ef1c s\u1ee3i quang (Tx\/Rx b\u1ecb ho\u00e1n \u0111\u1ed5i)<\/p><\/li><li><p>Lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang (l\u1ed7i kh\u1edbp gi\u1eefa s\u1ee3i \u0111\u01a1n mode v\u00e0 \u0111a mode)<\/p><\/li><li><p>D\u00e2y c\u00e1p s\u1ee3i quang b\u1ecb h\u01b0 h\u1ea1i ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ho\u00e1n \u0111\u1ed5i <strong>S\u1ee3i Tx v\u00e0 Rx<\/strong> \u0111\u1ec3 kh\u00f4i ph\u1ee5c c\u1ef1c t\u00ednh \u0111\u00fang<\/p><\/li><li><p>Thay d\u00e2y c\u00e1p s\u1ee3i quang b\u1eb1ng m\u1ed9t <strong>d\u00e2y c\u00e1p n\u1ed1i (patch cord) \u0111\u00e3 bi\u1ebft l\u00e0 t\u1ed1t<\/strong><\/p><\/li><li><p>Ki\u1ec3m tra <strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/strong> \u0111\u1ec3 x\u00e1c nh\u1eadn xem c\u00f4ng su\u1ea5t quang c\u00f3 \u0111ang \u0111\u01b0\u1ee3c nh\u1eadn hay kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh xem s\u1ef1 c\u1ed1 c\u00f3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u01b0\u1eddng d\u1eabn s\u1ee3i quang hay t\u1eeb <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476868.htm\">b\u1ed9 thu ph\u00e1t quang<\/a> ch\u00ednh n\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >K\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn ho\u1eb7c nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c (Intermittent Link or Link Flapping)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi thi\u1ebft l\u1eadp r\u1ed3i sau \u0111\u00f3 b\u1ecb ng\u1eaft l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, g\u00e2y ra k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c (link flapping).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ecb nhi\u1ec5m b\u1ea9n ho\u1eb7c b\u1ea9n<\/p><\/li><li><p>T\u1ed5n hao s\u1ee3i quang qu\u00e1 m\u1ee9c do kho\u1ea3ng c\u00e1ch d\u00e0i ho\u1eb7c \u0111\u1ea7u n\u1ed1i k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng<\/p><\/li><li><p>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng cao \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4-\u0111un SFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang b\u1eb1ng d\u1ee5ng c\u1ee5 l\u00e0m s\u1ea1ch s\u1ee3i quang<\/p><\/li><li><p>X\u00e1c minh <strong>M\u1ee9c c\u00f4ng su\u1ea5t quang Tx v\u00e0 Rx<\/strong> th\u00f4ng qua ch\u1ea9n \u0111o\u00e1n DOM<\/p><\/li><li><p>C\u1ea3i thi\u1ec7n h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t v\u00e0 l\u01b0u th\u00f4ng kh\u00ed xung quanh b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c gi\u1ea3i quy\u1ebft c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u n\u00e0y th\u01b0\u1eddng kh\u00f4i ph\u1ee5c l\u1ea1i k\u1ebft n\u1ed1i quang \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >G\u1ee1 r\u1ed1i SFP \u0111\u1eb7c th\u00f9 theo nh\u00e0 s\u1ea3n xu\u1ea5t (Cisco, Brocade, Juniper)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau cung c\u1ea5p c\u00e1c l\u1ec7nh CLI v\u00e0 c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n ri\u00eang bi\u1ec7t nh\u1eb1m x\u00e1c \u0111\u1ecbnh c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn m\u00f4-\u0111un SFP.<br\/>Vi\u1ec7c hi\u1ec3u c\u00e1ch m\u1ed7i n\u1ec1n t\u1ea3ng b\u00e1o c\u00e1o <strong>ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc, l\u1ed7i t\u01b0\u01a1ng th\u00edch v\u00e0 tr\u1ea1ng th\u00e1i c\u1ed5ng<\/strong> gi\u00fap k\u1ef9 s\u01b0 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3, m\u1ea5t c\u00f4ng su\u1ea5t quang ho\u1eb7c h\u1ea1n ch\u1ebf do ph\u1ea7n m\u1ec1m\u56fa\u4ef6 (firmware).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9.jpg\" alt=\"Vendor-Specific SFP Troubleshooting\" class=\"wp-image-3120\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1fe7b8ab232b469895cae507ba6465b9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c l\u1ec7nh v\u00e0 nh\u1eadt k\u00fd g\u1ee1 r\u1ed1i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng m\u1ea1ng doanh nghi\u1ec7p h\u00e0ng \u0111\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >G\u1ee1 r\u1ed1i SFP c\u1ee7a Cisco \u2014 C\u00e1c l\u1ec7nh IOS &amp; Nh\u1eadt k\u00fd ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch Cisco cung c\u1ea5p nhi\u1ec1u l\u1ec7nh CLI \u0111\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i SFP, m\u1ee9c c\u00f4ng su\u1ea5t quang v\u00e0 c\u1ea3nh b\u00e1o t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c l\u1ec7nh g\u1ee1 r\u1ed1i Cisco h\u1eefu \u00edch<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>show interfaces status<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c nh\u1eadt k\u00fd l\u1ed7i SFP Cisco ph\u1ed5 bi\u1ebfn<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><code>%SFP-4-THI\u1ebeT_B\u1eca_THU_PH\u00c1T_KH\u00d4NG_H\u1ed6_TR\u1ee2<\/code><\/p><\/li><li><p><code>%PM-4-V\u00d4_HI\u1ec6U_H\u00d3A_DO_L\u1ed6I: gbic-invalid<\/code><\/p><\/li><li><p><code>%PHY-4-SFP_KH\u00d4NG_\u0110\u01af\u1ee2C_H\u1ed6_TR\u1ee2<\/code><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u1eadt k\u00fd n\u00e0y th\u01b0\u1eddng cho th\u1ea5y ph\u1ea7n m\u1ec1m\u56fa\u4ef6 (firmware) b\u1ecb kh\u00f3a nh\u00e0 s\u1ea3n xu\u1ea5t, d\u1eef li\u1ec7u EEPROM kh\u00f4ng t\u01b0\u01a1ng th\u00edch ho\u1eb7c thi\u1ebft b\u1ecb quang kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>X\u1eed l\u00fd tr\u1ea1ng th\u00e1i errdisable<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t c\u1ed5ng r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i errdisable do thi\u1ebft b\u1ecb thu ph\u00e1t b\u1ecb t\u1eeb ch\u1ed1i, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c t\u1ea1m th\u1eddi giao di\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>shutdown<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 n\u1ec1n t\u1ea3ng Cisco cho ph\u00e9p b\u1ecf qua h\u1ea1n ch\u1ebf c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t:<\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>service unsupported-transceiver<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f <strong>L\u01b0u \u00fd:<\/strong> L\u1ec7nh n\u00e0y n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch th\u1eadn tr\u1ecdng v\u00ec c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u1ed7 tr\u1ee3 ho\u1eb7c b\u1ea3o h\u00e0nh t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >G\u1ee1 r\u1ed1i SFP c\u1ee7a Brocade \u2014 Tr\u01b0\u1eddng h\u1ee3p k\u00eanh truy\u1ec1n s\u1ee3i quang (Fiber Channel) v\u00e0 Ethernet<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch Brocade th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-you-should-know-about-storage-area-network-san\/\">m\u1ea1ng khu v\u1ef1c l\u01b0u tr\u1eef<\/a> (SAN) v\u00e0 c\u00f3 th\u1ec3 ch\u1ea1y h\u1ec7 \u0111i\u1ec1u h\u00e0nh k\u00eanh truy\u1ec1n s\u1ee3i quang (FOS) ho\u1eb7c ph\u1ea7n m\u1ec1m\u56fa\u4ef6 (firmware) Ethernet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c l\u1ec7nh ch\u1ea9n \u0111o\u00e1n Brocade ph\u1ed5 bi\u1ebfn<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>sfpshow<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c l\u1ec7nh n\u00e0y ti\u1ebft l\u1ed9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u00f4ng tin nh\u00e0 s\u1ea3n xu\u1ea5t SFP<\/p><\/li><li><p>M\u1ee9c c\u00f4ng su\u1ea5t quang (Tx\/Rx)<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceivers-operating-temperature-range\/\">Nhi\u1ec7t \u0111\u1ed9<\/a> v\u00e0 \u0111i\u1ec7n \u00e1p<\/p><\/li><li><p>B\u1ed9 \u0111\u1ebfm l\u1ed7i li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c l\u01b0u \u00fd v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c n\u1ec1n t\u1ea3ng Brocade n\u1ed5i ti\u1ebfng v\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c ch\u00ednh s\u00e1ch t\u01b0\u01a1ng th\u00edch nghi\u00eam ng\u1eb7t \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 module quang, \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng Fibre Channel. C\u00e1c module kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1ed7i kh\u1edfi t\u1ea1o c\u1ed5ng<\/p><\/li><li><p>V\u00f2ng l\u1eb7p \u0111\u1eb7t l\u1ea1i li\u00ean k\u1ebft li\u00ean t\u1ee5c<\/p><\/li><li><p>Gi\u1ea3m kh\u1ea3 n\u0103ng th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y, k\u1ef9 s\u01b0 th\u01b0\u1eddng x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a module quang v\u1edbi ma tr\u1eadn t\u01b0\u01a1ng th\u00edch Brocade tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP Juniper \u2014 Ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc Junos &amp; Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb Juniper ch\u1ea1y <strong>H\u1ec7 \u0111i\u1ec1u h\u00e0nh Junos (Junos OS)<\/strong> cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM) t\u00edch h\u1ee3p \u0111\u1ec3 ph\u00e2n t\u00edch chi ti\u1ebft SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u1ec7nh quan tr\u1ecdng c\u1ee7a Juniper<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>show interfaces diagnostics optics &lt;interface&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u ra v\u00ed d\u1ee5 th\u01b0\u1eddng bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t \u0111\u1ea7u ra laser (Tx)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang nh\u1eadn \u0111\u01b0\u1ee3c (Rx)<\/p><\/li><li><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/li><li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li><li><p>D\u00f2ng ph\u00e2n c\u1ef1c (Bias current)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i th\u00edch ng\u01b0\u1ee1ng DOM<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea1m vi c\u00f4ng su\u1ea5t quang ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111i\u1ec3n h\u00ecnh:<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx power)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u22129 \u0111\u1ebfn +3 dBm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t thu (Rx power)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u221220 \u0111\u1ebfn 0 dBm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec7t \u0111\u1ed9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0\u201370\u00b0C (module quang th\u01b0\u01a1ng m\u1ea1i)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu <strong>c\u00f4ng su\u1ea5t Rx gi\u1ea3m d\u01b0\u1edbi ng\u01b0\u1ee1ng<\/strong>, c\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i c\u00e1p quang b\u1ea9n<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch s\u1ee3i quang qu\u00e1 d\u00e0i ho\u1eb7c suy hao qu\u00e1 m\u1ee9c<\/p><\/li><li><p>Lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">MMF so v\u1edbi SMF<\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 c\u00e1c gi\u00e1 tr\u1ecb DOM gi\u00fap k\u1ef9 s\u01b0 ph\u00e1t hi\u1ec7n suy gi\u1ea3m quang h\u1ecdc tr\u01b0\u1edbc khi x\u1ea3y ra s\u1ef1 c\u1ed1 m\u1ea5t li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00f3m t\u1eaft nhanh l\u1ec7nh theo nh\u00e0 cung c\u1ea5p<\/strong><\/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>Nh\u00e0 cung c\u1ea5p<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>L\u1ec7nh quan tr\u1ecdng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u1ee5c \u0111\u00edch<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Cisco<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><code>show interfaces transceiver detail<\/code><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m tra ch\u1ea9n \u0111o\u00e1n DOM<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Brocade<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><code>sfpshow<\/code><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hi\u1ec3n th\u1ecb chi ti\u1ebft SFP<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Juniper<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><code>show interfaces diagnostics optics<br><\/code><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Xem gi\u00e1m s\u00e1t quang h\u1ecdc<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1ch s\u1eed d\u1ee5ng ch\u1ea9n \u0111o\u00e1n DOM \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 c\u1ed1 s\u1ee3i quang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1<\/strong><\/a><strong> (DOM)<\/strong> cung c\u1ea5p th\u00f4ng tin th\u1eddi gian th\u1ef1c v\u1ec1 tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a module SFP v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng li\u00ean k\u1ebft quang h\u1ecdc. H\u1ea7u h\u1ebft c\u00e1c b\u1ed9 thu ph\u00e1t hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 DOM, cho ph\u00e9p k\u1ef9 s\u01b0 m\u1ea1ng gi\u00e1m s\u00e1t tr\u1ef1c ti\u1ebfp t\u1eeb switch ho\u1eb7c router c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 c\u00f4ng su\u1ea5t ph\u00e1t, c\u00f4ng su\u1ea5t nh\u1eadn, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111i\u1ec7n \u00e1p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh xem s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i c\u00f3 li\u00ean quan \u0111\u1ebfn <strong>li\u00ean k\u1ebft s\u1ee3i quang, <\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476870.htm\"><strong>m\u00f4-\u0111un quang<\/strong><\/a><strong>, hay c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c th\u00f4ng s\u1ed1 DOM \u0111i\u1ec3n h\u00ecnh:<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042.jpg\" alt=\"Typical DOM Parameters:\" class=\"wp-image-3121\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4dacb4f25c244048873ae6b9945e3042-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t TX<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ee9c \u0111\u1ea7u ra quang do module ph\u00e1t ra<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t RX<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ee9c t\u00edn hi\u1ec7u quang nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb s\u1ee3i quang<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec7t \u0111\u1ed9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 thu ph\u00e1t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec7n \u00e1p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n c\u1ee7a module<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong s\u1ed1 c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y, <strong>C\u00f4ng su\u1ea5t quang RX<\/strong> th\u01b0\u1eddng l\u00e0 ch\u1ec9 b\u00e1o h\u1eefu \u00edch nh\u1ea5t khi ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1 s\u1ee3i quang. N\u1ebfu c\u00f4ng su\u1ea5t nh\u1eadn \u0111\u01b0\u1ee3c th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi ph\u1ea1m vi d\u1ef1 ki\u1ebfn, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 cho th\u1ea5y c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ecb nhi\u1ec5m b\u1ea9n l\u00e0m ch\u1eb7n m\u1ed9t ph\u1ea7n t\u00edn hi\u1ec7u quang<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch s\u1ee3i quang qu\u00e1 d\u00e0i ho\u1eb7c suy hao v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi h\u1ed7 tr\u1ee3 c\u1ee7a module<\/p><\/li><li><p>\u0110\u1ea7u n\u1ed1i k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c b\u1ecb h\u01b0 h\u1ecfng g\u00e2y t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u<\/p><\/li><li><p>Lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang ho\u1eb7c module quang kh\u00f4ng t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 c\u00e1c gi\u00e1 tr\u1ecb DOM cho ph\u00e9p k\u1ef9 s\u01b0 m\u1ea1ng ph\u00e1t hi\u1ec7n s\u1edbm suy gi\u1ea3m quang h\u1ecdc v\u00e0 ng\u0103n ng\u1eeba m\u1ea5t li\u00ean k\u1ebft b\u1ea5t ng\u1edd, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u1ea1ng s\u1ee3i quang trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c doanh nghi\u1ec7p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP hi\u1ec7u qu\u1ea3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP hi\u1ec7u qu\u1ea3 \u0111\u00f2i h\u1ecfi t\u1eadp h\u1ee3p \u0111\u00fang c\u00e1c c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n. M\u1eb7c d\u00f9 nhi\u1ec1u s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua l\u1ec7nh tr\u00ean switch v\u00e0 ki\u1ec3m tra tr\u1ef1c quan, nh\u01b0ng c\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng gi\u00fap k\u1ef9 s\u01b0 nhanh ch\u00f3ng x\u00e1c minh <strong>\u0111\u1ed9 s\u1ea1ch c\u1ee7a s\u1ee3i quang, m\u1ee9c t\u00edn hi\u1ec7u quang v\u00e0 ch\u1ee9c n\u0103ng ph\u1ea7n c\u1ee9ng<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f.jpg\" alt=\"Tools Needed for Effective SFP Troubleshooting\" class=\"wp-image-3122\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/88852f870a0540b590b51890a3e1664f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n SFP:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>K\u00ednh hi\u1ec3n vi ki\u1ec3m tra s\u1ee3i quang<\/strong><br\/>D\u00f9ng \u0111\u1ec3 ki\u1ec3m tra m\u1eb7t cu\u1ed1i \u0111\u1ea7u n\u1ed1i s\u1ee3i quang nh\u1eb1m ph\u00e1t hi\u1ec7n b\u1ee5i, d\u1ea7u ho\u1eb7c v\u1ebft x\u01b0\u1edbc c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u quang.<\/p><\/li><li><p><strong>B\u1ed9 v\u1ec7 sinh s\u1ee3i quang<\/strong><br\/>Bao g\u1ed3m b\u00fat v\u1ec7 sinh, kh\u0103n lau kh\u00f4ng x\u01a1 v\u00e0 dung d\u1ecbch l\u00e0m s\u1ea1ch \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c ch\u1ea5t g\u00e2y nhi\u1ec5m b\u1ea9n tr\u00ean \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i s\u1ee3i quang.<\/p><\/li><li><p><strong>Module SFP \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng l\u00e0 t\u1ed1t<\/strong><br\/>M\u1ed9t b\u1ed9 thu ph\u00e1t \u0111ang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh, c\u00f3 th\u1ec3 thay th\u1ebf v\u00e0o thi\u1ebft b\u1ecb \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem s\u1ef1 c\u1ed1 c\u00f3 ph\u1ea3i do module b\u1ecb l\u1ed7i hay kh\u00f4ng.<\/p><\/li><li><p><strong>\u0110\u1ed3ng h\u1ed3 \u0111o c\u00f4ng su\u1ea5t quang<\/strong><br\/>\u0110o c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u quang th\u1ef1c t\u1ebf truy\u1ec1n qua li\u00ean k\u1ebft s\u1ee3i quang, gi\u00fap x\u00e1c nh\u1eadn xem m\u1ee9c c\u00f4ng su\u1ea5t c\u00f3 n\u1eb1m trong ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng d\u1ef1 ki\u1ebfn hay kh\u00f4ng.<\/p><\/li><li><p><strong>C\u00e1p s\u1ee3i quang loopback<\/strong><br\/>D\u00f9ng \u0111\u1ec3 n\u1ed1i \u0111\u1ea7u ph\u00e1t (Tx) v\u00e0 \u0111\u1ea7u thu (Rx) c\u1ee7a c\u00f9ng m\u1ed9t c\u1ed5ng nh\u1eb1m ki\u1ec3m tra xem module SFP v\u00e0 c\u1ed5ng switch c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang hay kh\u00f4ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang c\u00f4ng c\u1ee5 gi\u00fap k\u1ef9 s\u01b0 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c s\u1ef1 c\u1ed1 b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1p s\u1ee3i quang, module quang hay thi\u1ebft b\u1ecb m\u1ea1ng, t\u1eeb \u0111\u00f3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 h\u1ea1n ch\u1ebf th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Th\u1ef1c h\u00e0nh ph\u00f2ng ng\u1eeba nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP hi\u1ec7u qu\u1ea3 l\u00e0 r\u1ea5t quan tr\u1ecdng, nh\u01b0ng ph\u00f2ng ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn SFP ngay t\u1eeb \u0111\u1ea7u c\u00f2n c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n n\u1eefa trong vi\u1ec7c duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng \u1ed5n \u0111\u1ecbnh. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 m\u1ed9t s\u1ed1 th\u1ef1c h\u00e0nh ph\u00f2ng ng\u1eeba, qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro <strong>m\u1ea5t li\u00ean k\u1ebft, suy gi\u1ea3m t\u00edn hi\u1ec7u quang v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng b\u1ea5t ng\u1edd<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u s\u1ef1 c\u1ed1 SFP:<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd.jpg\" alt=\"Minimize SFP Failures Practices:\" class=\"wp-image-3123\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2ef9cfff642b44f7800beff518b26cfd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Lu\u00f4n l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t<\/strong><br\/>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch tr\u01b0\u1edbc khi k\u1ebft n\u1ed1i. Ngay c\u1ea3 nh\u1eefng h\u1ea1t b\u1ee5i nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t t\u00edn hi\u1ec7u quang ho\u1eb7c t\u0103ng suy hao.<\/p><\/li><li><p><strong>S\u1eed d\u1ee5ng module \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p ph\u00ea duy\u1ec7t ho\u1eb7c t\u01b0\u01a1ng th\u00edch<\/strong><br\/>Tri\u1ec3n khai c\u00e1c module SFP \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn ho\u1eb7c x\u00e1c minh l\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb m\u1ea1ng. C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 khi\u1ebfn module b\u1ecb t\u1eeb ch\u1ed1i ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p><\/li><li><p><strong>Gi\u00e1m s\u00e1t \u0111\u1ecbnh k\u1ef3 c\u00e1c ch\u1ec9 s\u1ed1 DOM<\/strong><br\/>Th\u01b0\u1eddng xuy\u00ean xem x\u00e9t d\u1eef li\u1ec7u gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM), ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00f4ng su\u1ea5t ph\u00e1t, c\u00f4ng su\u1ea5t nh\u1eadn v\u00e0 nhi\u1ec7t \u0111\u1ed9, \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm kh\u1ea3 n\u0103ng suy gi\u1ea3m t\u00edn hi\u1ec7u.<\/p><\/li><li><p><strong>Duy tr\u00ec lu\u1ed3ng kh\u00f4ng kh\u00ed th\u00edch h\u1ee3p xung quanh c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/strong><br\/>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u00f3 th\u00f4ng gi\u00f3 \u0111\u1ea7y \u0111\u1ee7. Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 thu ph\u00e1t v\u00e0 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c m\u00f4-\u0111un quang.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba n\u00e0y gi\u00fap duy tr\u00ec k\u1ebft n\u1ed1i quang \u1ed5n \u0111\u1ecbnh, gi\u1ea3m t\u1ea7n su\u1ea5t kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 m\u1ea1ng ngo\u00e0i \u00fd mu\u1ed1n trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c c\u00e2u tr\u1ea3 l\u1eddi cho m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 k\u1ef9 s\u01b0 g\u1eb7p ph\u1ea3i khi ch\u1ea9n \u0111o\u00e1n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 k\u1ebft n\u1ed1i SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 1. T\u1ea1i sao m\u00f4-\u0111un SFP c\u1ee7a t\u00f4i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n do <strong>c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch, gi\u1edbi h\u1ea1n ph\u1ea7n\u56fa\u4ef6 ho\u1eb7c b\u1ed9 thu ph\u00e1t b\u1ecb l\u1ed7i<\/strong>. Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Cisco, Juniper ho\u1eb7c Brocade \u00e1p d\u1ee5ng c\u00e1c ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch nh\u1eb1m \u0111\u1ea3m b\u1ea3o ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n quang h\u1ecdc \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh m\u00f4-\u0111un tr\u00ean thi\u1ebft b\u1ecb <strong>ma tr\u1eadn t\u01b0\u01a1ng th\u00edch c\u1ee7a thi\u1ebft b\u1ecb<\/strong><\/p><\/li><li><p>Ki\u1ec3m tra c\u1ed5ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t <strong>m\u00f4-\u0111un SFP \u0111\u00e3 bi\u1ebft l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/strong><\/p><\/li><li><p>Xem l\u1ea1i nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng (v\u00ed d\u1ee5: s\u1eed d\u1ee5ng l\u1ec7nh <code>hi\u1ec3n th\u1ecb nh\u1eadt k\u00fd<\/code>) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1ed7i ph\u00e1t hi\u1ec7n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 2. T\u1ea1i sao m\u00f4-\u0111un SFP c\u1ee7a t\u00f4i b\u1ecb \u0111\u00e1nh d\u1ea5u l\u00e0 \u201cKh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>\u201cTransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/strong> Th\u00f4ng b\u00e1o n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n khi ph\u1ea7n\u56fa\u4ef6 c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch kh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c m\u00f4-\u0111un SFP. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra do:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u1ea3 n\u0103ng c\u1ea5u h\u00ecnh t\u1ed1c \u0111\u1ed9 c\u1ed5ng<\/p><\/li><li><p>Th\u00f4ng tin sai ho\u1eb7c thi\u1ebfu <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-eeprom-powers-sfp-and-qsfp-optical-modules\/\"><strong>B\u1ed9 nh\u1edb EEPROM<\/strong><\/a><strong> nh\u1eadn d\u1ea1ng<\/strong> trong m\u00f4-\u0111un<\/p><\/li><li><p>Gi\u1edbi h\u1ea1n v\u1ec1 phi\u00ean b\u1ea3n ph\u1ea7n\u56fa\u4ef6 ho\u1eb7c ph\u1ea7n m\u1ec1m tr\u00ean b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1, h\u00e3y ki\u1ec3m tra danh s\u00e1ch t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 xem l\u1ea1i nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng nh\u1eb1m x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n c\u1ee5 th\u1ec3 khi\u1ebfn m\u00f4-\u0111un b\u1ecb t\u1eeb ch\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 3. Nguy\u00ean nh\u00e2n n\u00e0o g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft SFP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft<\/strong> Hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft x\u1ea3y ra khi m\u1ed9t giao di\u1ec7n m\u1ea1ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i chuy\u1ec3n tr\u1ea1ng th\u00e1i gi\u1eefa \u201cl\u00ean\u201d v\u00e0 \u201cxu\u1ed1ng\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ecb b\u1ea9n ho\u1eb7c nhi\u1ec5m b\u1ea9n<\/p><\/li><li><p>T\u00edn hi\u1ec7u quang y\u1ebfu ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li><li><p>D\u00e2y c\u00e1p quang b\u1ecb l\u1ed7i<\/p><\/li><li><p>L\u1ed7i ph\u1ea7n c\u1ee9ng trong m\u00f4-\u0111un SFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0m s\u1ea1ch c\u00e1c \u0111\u1ea7u n\u1ed1i v\u00e0 x\u00e1c minh m\u1ee9c c\u00f4ng su\u1ea5t quang th\u00f4ng qua ch\u1ea9n \u0111o\u00e1n DOM th\u01b0\u1eddng gi\u00fap \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 4. T\u00f4i n\u00ean l\u00e0m g\u00ec n\u1ebfu li\u00ean k\u1ebft quang b\u1ecb gi\u00e1n \u0111o\u1ea1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu k\u1ebft n\u1ed1i ho\u1ea1t \u0111\u1ed9ng gi\u00e1n \u0111o\u1ea1n, h\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c ki\u1ec3m tra sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch c\u00e1c <strong>m\u1eb7t cu\u1ed1i c\u1ee7a \u0111\u1ea7u n\u1ed1i c\u00e1p quang<\/strong>.<\/p><\/li><li><p>Ki\u1ec3m tra <strong>m\u1ee9c c\u00f4ng su\u1ea5t quang ph\u00e1t v\u00e0 nh\u1eadn<\/strong> th\u00f4ng qua gi\u00e1m s\u00e1t DOM.<\/p><\/li><li><p>Th\u1ef1c hi\u1ec7n m\u1ed9t <strong>ph\u00e9p th\u1eed ho\u00e1n \u0111\u1ed5i m\u00f4-\u0111un<\/strong> b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t m\u00f4-\u0111un SFP \u0111\u00e3 bi\u1ebft l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu v\u1ea5n \u0111\u1ec1 v\u1eabn ti\u1ebfp di\u1ec5n sau c\u00e1c b\u01b0\u1edbc n\u00e0y, h\u00e3y thu th\u1eadp nh\u1eadt k\u00fd ch\u1ea9n \u0111o\u00e1n v\u00e0 li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb \u0111\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 5. C\u00e1c m\u00f4-\u0111un SFP c\u1ee7a b\u00ean th\u1ee9 ba c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p h\u1ed7 tr\u1ee3 <strong>v\u1edbi c\u00e1c th\u01b0\u01a1ng hi\u1ec7u m\u1ea1ng h\u00e0ng \u0111\u1ea7u (Cisco, Juniper, Arista, HPE, v.v.) m\u00e0 kh\u00f4ng \u0111i k\u00e8m m\u1ee9c gi\u00e1 cao ng\u1ea5t ng\u01b0\u1edfng c\u1ee7a c\u00e1c module mang nh\u00e3n hi\u1ec7u nh\u00e0 s\u1ea3n xu\u1ea5t. Vi\u1ec7c s\u1eed d\u1ee5ng <\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\"><strong>SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/strong><\/a><strong> m\u00f4-\u0111un<\/strong>, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 mang l\u1ea1i gi\u1ea3i ph\u00e1p thay th\u1ebf ti\u1ebft ki\u1ec7m chi ph\u00ed so v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n quang h\u1ecdc g\u1ed1c c\u1ee7a nh\u00e0 cung c\u1ea5p. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p \u00e1p d\u1ee5ng c\u00e1c ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 t\u1ea1o c\u1ea3nh b\u00e1o ho\u1eb7c ng\u0103n ch\u1eb7n c\u00e1c m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi tri\u1ec3n khai <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476873.htm\">Thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/a> trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t, khuy\u1ebfn ngh\u1ecb th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi m\u1eabu b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u1ee5 th\u1ec3<\/p><\/li><li><p>Ki\u1ec3m tra m\u00f4-\u0111un trong m\u00f4i tr\u01b0\u1eddng ki\u1ec3m so\u00e1t<\/p><\/li><li><p>Hi\u1ec3u r\u00f5 m\u1ecdi t\u00e1c \u0111\u1ed9ng ti\u1ec1m \u1ea9n \u0111\u1ebfn ch\u00ednh s\u00e1ch h\u1ed7 tr\u1ee3 ho\u1eb7c b\u1ea3o h\u00e0nh c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >K\u1ebft lu\u1eadn: C\u00e1ch ch\u1ea9n \u0111o\u00e1n v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n \u0111\u00e1ng k\u1ec3 khi k\u1ef9 s\u01b0 tu\u00e2n theo quy tr\u00ecnh ch\u1ea9n \u0111o\u00e1n c\u00f3 c\u1ea5u tr\u00fac thay v\u00ec thay th\u1ebf linh ki\u1ec7n m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u01b0 <strong>kh\u00f4ng c\u00f3 li\u00ean k\u1ebft, th\u1ea5t b\u1ea1i trong vi\u1ec7c ph\u00e1t hi\u1ec7n m\u00f4-\u0111un ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch ki\u1ec3m tra tu\u1ea7n t\u1ef1 c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u1eadt l\u00fd<\/strong> c\u1ee7a m\u00f4-\u0111un SFP<\/p><\/li><li><p><strong>\u0110\u1ed9 s\u1ea1ch c\u1ee7a c\u00e1p quang v\u00e0 t\u00ecnh tr\u1ea1ng \u0111\u1ea7u n\u1ed1i<\/strong><\/p><\/li><li><p><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch quang h\u1ecdc<\/strong> (lo\u1ea1i c\u00e1p quang, b\u01b0\u1edbc s\u00f3ng v\u00e0 t\u1ed1c \u0111\u1ed9)<\/p><\/li><li><p><strong>Ch\u1ea9n \u0111o\u00e1n gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tu\u00e2n th\u1ee7 quy tr\u00ecnh t\u1eebng b\u01b0\u1edbc n\u00e0y gi\u00fap k\u1ef9 s\u01b0 m\u1ea1ng nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c s\u1ef1 c\u1ed1 n\u1eb1m \u1edf b\u1ed9 thu ph\u00e1t, c\u00e1p quang hay c\u1ea5u h\u00ecnh b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, vi\u1ec7c t\u00ecm hi\u1ec3u c\u00e1c l\u1ec7nh ch\u1ea9n \u0111o\u00e1n \u0111\u1eb7c th\u00f9 theo nh\u00e0 cung c\u1ea5p<strong>s<\/strong> v\u00e0 gi\u00e1m s\u00e1t li\u00ean t\u1ee5c c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 <strong>m\u1ee9c c\u00f4ng su\u1ea5t TX\/RX v\u00e0 nhi\u1ec7t \u0111\u1ed9<\/strong>\u2014gi\u00fap ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 t\u00e1i di\u1ec5n v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u1ea1ng quang \u1ed5n \u0111\u1ecbnh, \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng s\u1ea3n xu\u1ea5t, vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111\u00fang c\u00e1ch c\u00f9ng c\u00e1c th\u1ef1c ti\u1ec5n b\u1ea3o tr\u00ec ph\u00f2ng ng\u1eeba l\u00e0 c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 duy tr\u00ec \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a m\u1ea1ng quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai m\u1ea1ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i quang \u0111\u00e1ng tin c\u1eady, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c m\u00f4-\u0111un SFP ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng th\u00edch l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1m ph\u00e1 c\u00e1c th\u00e0nh ph\u1ea7n m\u1ea1ng chuy\u00ean nghi\u1ec7p v\u00e0 gi\u1ea3i ph\u00e1p quang h\u1ecdc t\u1ea1i <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\">C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/a>, ho\u1eb7c li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch c\u0169ng nh\u01b0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7.jpg\" alt=\"LINK-PP Optical Modules\" class=\"wp-image-3124\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9bed335daff64fd598cb558037dbede7-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<div><div widgetid=\"c7308864405a11f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"c7308864405a11f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP \u0111\u1ec3 s\u1eeda l\u1ed7i \u201ckh\u00f4ng k\u1ebft n\u1ed1i\u201d, l\u1ed7i kh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c m\u00f4-\u0111un v\u00e0 s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i c\u00e1p quang. Bao g\u1ed3m c\u00e1c l\u1ec7nh ch\u1ea9n \u0111o\u00e1n v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t.<\/p>","protected":false},"author":1,"featured_media":3125,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[24,26],"class_list":["post-3126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3126","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=3126"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3126\/revisions"}],"predecessor-version":[{"id":10759,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3126\/revisions\/10759"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3125"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}