{"id":2448,"date":"2026-04-20T10:06:00","date_gmt":"2026-04-20T10:06:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/sfp-technology-explained-types-compatibility-and-fixes\/"},"modified":"2026-06-22T03:32:47","modified_gmt":"2026-06-22T03:32:47","slug":"sfp-technology-explained-types-compatibility-and-fixes","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-technology-explained-types-compatibility-and-fixes","title":{"rendered":"Gi\u1ea3i th\u00edch c\u00f4ng ngh\u1ec7 SFP: C\u00e1c lo\u1ea1i, t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c-1024x536.jpg\" alt=\"SFP (Small Form-factor Pluggable) modules enable flexible\" class=\"wp-image-2438\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/36578f35adfa4d33b0860a167adc6f2c.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi hi\u1ec7n \u0111\u1ea1i t\u1ed1c \u0111\u1ed9 cao, l\u1ea5y d\u1eef li\u1ec7u l\u00e0m trung t\u00e2m, <strong>How to choose compatible SFP modules<\/strong> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n n\u1ec1n t\u1ea3ng c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. Cho d\u00f9 b\u1ea1n \u0111ang tri\u1ec3n khai c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p, n\u00e2ng c\u1ea5p c\u00e1c li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u hay x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng, c\u00e1c m\u00f4-\u0111un SFP (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-small-form-factor-pluggable-transceiver-guide\/\">Typical Medium<\/a>) cho ph\u00e9p k\u1ebft n\u1ed1i linh ho\u1ea1t, m\u1edf r\u1ed9ng quy m\u00f4 v\u00e0 hi\u1ec7u su\u1ea5t cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, c\u00f4ng ngh\u1ec7 SFP \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478230.htm\">c\u00e1c b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng<\/a> cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 <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\/knowledge-center\/what-is-servers-components-types-functions\/\">, and fiber optic links through interchangeable transceiver modules. Unlike standard RJ45 Ethernet ports, SFP ports can support both fiber optic and copper Ethernet connections depending on the installed module.<\/a>\u2014truy\u1ec1n d\u1eef li\u1ec7u qua k\u1ebft n\u1ed1i c\u00e1p quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng. Thay v\u00ec b\u1ecb kh\u00f3a v\u00e0o c\u00e1c c\u1ed5ng c\u1ed1 \u0111\u1ecbnh, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 thay th\u1ebf <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> d\u1ef1a tr\u00ean y\u00eau c\u1ea7u v\u1ec1 kho\u1ea3ng c\u00e1ch, t\u1ed1c \u0111\u1ed9 v\u00e0 \u1ee9ng d\u1ee5ng, gi\u00fap m\u1ea1ng tr\u1edf n\u00ean linh ho\u1ea1t v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, m\u1eb7c d\u00f9 kh\u00e1i ni\u1ec7m nghe c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng vi\u1ec7c s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf l\u1ea1i ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u. Ng\u01b0\u1eddi d\u00f9ng t\u00ecm ki\u1ebfm c\u1ee5m t\u1eeb \u201cc\u00f4ng ngh\u1ec7 SFP\u201d kh\u00f4ng ch\u1ec9 mu\u1ed1n bi\u1ebft \u0111\u1ecbnh ngh\u0129a\u2014m\u00e0 th\u01b0\u1eddng \u0111ang c\u1ed1 g\u1eafng gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c th\u1ef1c ti\u1ec5n nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ea1i sao m\u00f4-\u0111un SFP c\u1ee7a t\u00f4i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng?<\/p><\/li>\n\n\n\n<li><p>Nguy\u00ean nh\u00e2n n\u00e0o g\u00e2y ra l\u1ed7i \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d?<\/p><\/li>\n\n\n\n<li><p>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng <a href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\" target=\"_self\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a> c\u00e1c m\u00f4-\u0111un m\u1ed9t c\u00e1ch an to\u00e0n kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn gi\u1eefa SFP, SFP+ v\u00e0 QSFP?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng c\u00e2u h\u1ecfi n\u00e0y ph\u1ea3n \u00e1nh m\u1ed9t th\u1ef1c t\u1ebf quan tr\u1ecdng: <strong>C\u00f4ng ngh\u1ec7 SFP n\u1eb1m \u1edf giao \u0111i\u1ec3m c\u1ee7a hi\u1ec7u n\u0103ng, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 x\u1eed s\u1ef1 c\u1ed1<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i xa h\u01a1n nh\u1eefng gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c hi\u1ec3u bi\u1ebft k\u1ef9 thu\u1eadt th\u1ef1c ti\u1ec5n, c\u00e1c t\u00ecnh hu\u1ed1ng h\u1ecfng h\u00f3c ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c khu\u00f4n kh\u1ed5 ra quy\u1ebft \u0111\u1ecbnh khi mua h\u00e0ng, b\u1ea1n s\u1ebd h\u1ecdc \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng ngh\u1ec7 SFP l\u00e0 g\u00ec v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa SFP, SFP+ v\u00e0 QSFP<\/p><\/li>\n\n\n\n<li><p>C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch v\u00e0 tri\u1ec3n khai ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/p><\/li>\n\n\n\n<li><p>C\u00e1ch x\u1eed l\u00fd s\u1ef1 c\u1ed1 <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-issue-troubleshooting-guide\/\" target=\"_blank\" rel=\"\">c\u00e1c v\u1ea5n \u0111\u1ec1 SFP<\/a> m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<\/p><\/li>\n\n\n\n<li><p>C\u00e1ch l\u1ef1a ch\u1ecdn m\u00f4-\u0111un SFP ph\u00f9 h\u1ee3p nh\u1ea5t cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n l\u00e0 chuy\u00ean gia CNTT, k\u1ef9 s\u01b0 m\u1ea1ng hay ng\u01b0\u1eddi mua thi\u1ebft b\u1ecb k\u1ef9 thu\u1eadt, b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t, th\u1ef1c ti\u1ec5n\u2014v\u00e0 tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u1ed1n k\u00e9m th\u01b0\u1eddng x\u1ea3y ra khi tri\u1ec3n khai SFP.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 C\u00f4ng ngh\u1ec7 SFP l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How to choose compatible SFP modules<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm (Small Form-factor Pluggable \u2013 SFP)\u2014nh\u1ecf g\u1ecdn, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491474.htm\">c\u00e1c m\u00f4-\u0111un c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u1ea1ng linh ho\u1ea1t tr\u00ean c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede c\u1ea5p \u0111\u1ed9 c\u01a1 b\u1ea3n, m\u00f4-\u0111un SFP ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t giao di\u1ec7n gi\u1eefa thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn. N\u00f3 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eeb thi\u1ebft b\u1ecb th\u00e0nh t\u00edn hi\u1ec7u quang (cho c\u00e1p quang) ho\u1eb7c truy\u1ec1n tr\u1ef1c ti\u1ebfp t\u00edn hi\u1ec7u \u0111i\u1ec7n (cho c\u00e1p \u0111\u1ed3ng), cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/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\/5dede57c7cf74f7d9e505410b585cf0b.jpg\" alt=\"What is SFP Technology?\" class=\"wp-image-2439\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5dede57c7cf74f7d9e505410b585cf0b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5dede57c7cf74f7d9e505410b585cf0b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5dede57c7cf74f7d9e505410b585cf0b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5dede57c7cf74f7d9e505410b585cf0b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5dede57c7cf74f7d9e505410b585cf0b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00e2n t\u00edch thu\u1eadt ng\u1eef \u201cSFP\u201d<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u1ec7 s\u1ed1 h\u00ecnh d\u1ea1ng nh\u1ecf (Small Form-factor)<\/strong> \u2192 K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, cho ph\u00e9p m\u1eadt \u0111\u1ed9 c\u1ed5ng cao tr\u00ean c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/the-hot-pluggable-nature-of-optical-modules\/\" target=\"_blank\" rel=\"\"><strong>C\u00f3 th\u1ec3 c\u1eafm r\u1eddi (Pluggable)<\/strong><\/a> \u2192 H\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng (hot-swappable), ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ch\u00e8n ho\u1eb7c th\u00e1o m\u00f4-\u0111un m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf m\u00f4-\u0111un n\u00e0y ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 l\u00e0m n\u00ean s\u1ee9c m\u1ea1nh c\u1ee7a c\u00f4ng ngh\u1ec7 SFP\u2014n\u00f3 cho ph\u00e9p k\u1ef9 s\u01b0 m\u1ea1ng t\u00f9y ch\u1ec9nh k\u1ebft n\u1ed1i m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao c\u00f4ng ngh\u1ec7 SFP l\u1ea1i quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. C\u00f4ng ngh\u1ec7 SFP \u0111\u00f3ng vai tr\u00f2 ch\u1ee7 ch\u1ed1t b\u1eb1ng c\u00e1ch cho ph\u00e9p:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ti\u1ec7n linh ho\u1ea1t<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/488475.htm\" target=\"_self\"><strong>M\u00f4-\u0111un SFP quang h\u1ecdc (fiber optic SFP modules)<\/strong><\/a> (truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa, t\u1ed1c \u0111\u1ed9 cao)<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476770.htm\" target=\"_self\"><strong>M\u00f4-\u0111un SFP \u0111\u1ed3ng<\/strong><\/a> (k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn, chi ph\u00ed hi\u1ec7u qu\u1ea3)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>N\u00e2ng c\u1ea5p m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec thay th\u1ebf to\u00e0n b\u1ed9 switch ho\u1eb7c router, b\u1ea1n ch\u1ec9 c\u1ea7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u00e2ng c\u1ea5p t\u1eeb <a href=\"https:\/\/www.l-p.com\/products\/476763.htm\" target=\"_self\">SFP 1G<\/a> to <a href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\" target=\"_self\">SFP+ 10G<\/a><\/p><\/li>\n\n\n\n<li><p>Thay \u0111\u1ed5i kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn (v\u00ed d\u1ee5: t\u1eeb SR sang LR)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eadt \u0111\u1ed9 c\u1ed5ng cao<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, c\u00e1c c\u1ed5ng SFP cho ph\u00e9p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec1u giao di\u1ec7n h\u01a1n tr\u00ean m\u1ed7i thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>T\u0103ng c\u01b0\u1eddng t\u1ed5ng b\u0103ng th\u00f4ng trong kh\u00f4ng gian rack h\u1ea1n ch\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ec7 sinh th\u00e1i \u0111a nh\u00e0 cung c\u1ea5p (ti\u00eau chu\u1ea9n MSA)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP tu\u00e2n theo ti\u00eau chu\u1ea9n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/multi-source-agreements-optical-transceivers\/\">Th\u1ecfa thu\u1eadn \u0110a ngu\u1ed3n<\/a> (MSA), \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch v\u1edbi nhau<\/p><\/li>\n\n\n\n<li><p>Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u00eam s\u1ef1 linh ho\u1ea1t ngo\u00e0i c\u00e1c nh\u00e0 cung c\u1ea5p OEM<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y c\u0169ng \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch, v\u1ea5n \u0111\u1ec1 ch\u00fang ta s\u1ebd \u0111\u1ec1 c\u1eadp sau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng ngh\u1ec7 SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c switch m\u1ea1ng doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\" target=\"_blank\" rel=\"\">```html<\/a><\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n\n\n\n<li><p>C\u00e1c \u1ee9ng d\u1ee5ng Ethernet c\u00f4ng nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-an-isp-internet-service-provider\/\" target=\"_blank\" rel=\"\">However, many beginners are confused by common questions such as:<\/a> v\u00e0 c\u00e1c m\u1ea1ng truy c\u1eadp quang (fiber access networks)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng ngh\u1ec7 SFP kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng\u2014m\u00e0 c\u00f2n l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t th\u00fac \u0111\u1ea9y thi\u1ebft k\u1ebf m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p k\u1ef9 s\u01b0 c\u00e2n b\u1eb1ng gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec7u su\u1ea5t<\/p><\/li>\n\n\n\n<li><p>Cost<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 n\u1ec1n t\u1ea3ng n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o c\u00e1ch c\u00e1c m\u00f4-\u0111un SFP th\u1ef1c s\u1ef1 v\u1eadn h\u00e0nh trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c module SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 hi\u1ec3u c\u00f4ng ngh\u1ec7 SFP trong c\u00e1c m\u1ea1ng th\u1ef1c t\u1ebf, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 xem x\u00e9t c\u00e1ch m\u1ed9t module SFP th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng b\u00ean trong thi\u1ebft b\u1ecb. V\u1ec1 b\u1ea3n ch\u1ea5t, m\u1ed9t module SFP ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 thu ph\u00e1t (transceiver \u2014 k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng truy\u1ec1n v\u00e0 nh\u1eadn), cho ph\u00e9p truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u hai chi\u1ec1u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng.<\/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\/02bace91073f482e96876351862500f6.jpg\" alt=\"How SFP Modules Work\" class=\"wp-image-2440\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02bace91073f482e96876351862500f6.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02bace91073f482e96876351862500f6-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02bace91073f482e96876351862500f6-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02bace91073f482e96876351862500f6-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02bace91073f482e96876351862500f6-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u: \u0110i\u1ec7n \u2194 Quang (ho\u1eb7c \u0110i\u1ec7n \u2194 \u0110i\u1ec7n)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vai tr\u00f2 ch\u00ednh c\u1ee7a module SFP l\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>In <a href=\"https:\/\/www.l-p.com\/products\/476093.htm\" target=\"_self\">c\u00e1c module SFP s\u1ee3i quang<\/a>:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n \u2192 t\u00edn hi\u1ec7u quang \u0111\u1ec3 truy\u1ec1n \u0111i<\/p><\/li>\n\n\n\n<li><p>Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u quang \u2192 t\u00edn hi\u1ec7u \u0111i\u1ec7n khi nh\u1eadn v\u1ec1<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>Trong c\u00e1c module SFP \u0111\u1ed3ng (RJ45):<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Truy\u1ec1n tr\u1ef1c ti\u1ebfp t\u00edn hi\u1ec7u \u0111i\u1ec7n qua c\u00e1p Ethernet<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng (ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng t\u00edn hi\u1ec7u \u0111i\u1ec7n) giao ti\u1ebfp qua c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n v\u1eadt l\u00fd kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 c\u00e1c li\u00ean k\u1ebft s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u00eanh truy\u1ec1n v\u00e0 k\u00eanh nh\u1eadn (Tx\/Rx)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i module SFP \u0111\u1ec1u ch\u1ee9a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 truy\u1ec1n (Tx) \u2192 G\u1eedi d\u1eef li\u1ec7u ra ngo\u00e0i<\/p><\/li>\n\n\n\n<li><p>B\u1ed9 nh\u1eadn (Rx) \u2192 Nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u1ee9ng d\u1ee5ng s\u1ee3i quang:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u01b0\u1eddng s\u1eed d\u1ee5ng hai s\u1ee3i quang (duplex): m\u1ed9t s\u1ee3i cho Tx v\u00e0 m\u1ed9t s\u1ee3i cho Rx<\/p><\/li>\n\n\n\n<li><p>Ho\u1eb7c m\u1ed9t s\u1ee3i quang (<span class=\"math\">)<\/span> s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau<a href=\"https:\/\/www.l-p.com\/store-27039-1g-bidi-sfp.htm\" target=\"_blank\" rel=\"\">BiDi<br><\/a>S\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy\u1ec1n th\u00f4ng duplex \u0111\u1ea7y \u0111\u1ee7, ngh\u0129a l\u00e0 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u01b0u th\u00f4ng theo c\u1ea3 hai h\u01b0\u1edbng \u0111\u1ed3ng th\u1eddi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thi\u1ebft k\u1ebf thay th\u1ebf n\u00f3ng (Hot-Swappable \u2014 \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a c\u00f4ng ngh\u1ec7 SFP l\u00e0 kh\u1ea3 n\u0103ng thay th\u1ebf n\u00f3ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u00f3 th\u1ec3 c\u1eafm ho\u1eb7c r\u00fat module SFP m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea3o tr\u00ec nhanh ch\u00f3ng<\/p><\/li>\n\n\n\n<li><p>N\u00e2ng c\u1ea5p d\u1ec5 d\u00e0ng<\/p><\/li>\n\n\n\n<li><p>Th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng t\u1ed1i thi\u1ec3u<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh n\u0103ng n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>```html<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n\n\n\n<li><p>M\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Giao ti\u1ebfp th\u00f4ng minh gi\u1eefa c\u00e1c module (EEPROM &amp; Ch\u1ea9n \u0111o\u00e1n)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP kh\u00f4ng ch\u1ec9 l\u00e0 th\u00e0nh ph\u1ea7n th\u1ee5 \u0111\u1ed9ng \u2014 ch\u00fang t\u00edch h\u1ee3p b\u1ed9 nh\u1edb trong (<span class=\"math\">)<\/span>) l\u01b0u tr\u1eef:<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-eeprom-powers-sfp-and-qsfp-optical-modules\/\">B\u1ed9 nh\u1edb EEPROM<\/a>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u h\u1ed7 tr\u1ee3<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u00f4ng tin nh\u00e0 cung c\u1ea5p<br><\/p><\/li>\n\n\n\n<li><p>S\u1ed1 s\u00ea-ri<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng<br><\/p><\/li>\n\n\n\n<li><p>Nhi\u1ec1u module c\u00f2n h\u1ed7 tr\u1ee3 Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1 (<span class=\"math\">)<\/span> (DOM), cung c\u1ea5p d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c nh\u01b0:<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u1ea5t quang ph\u00e1t\/\u0111\u00f3n<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">DOM<\/a>\u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng cho vi\u1ec7c ch\u1ea9n \u0111o\u00e1n m\u1ea1ng v\u00e0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec7t \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>\u0110i\u1ec7n \u00e1p<\/p><\/li>\n\n\n\n<li><p>V\u1ecb tr\u00ed c\u1ee7a SFP trong ng\u0103n x\u1ebfp m\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ki\u1ebfn tr\u00fac m\u1ea1ng \u0111i\u1ec3n h\u00ecnh, c\u00e1c module SFP n\u1eb1m \u1edf t\u1ea7ng V\u1eadt l\u00fd (T\u1ea7ng 1) c\u1ee7a m\u00f4 h\u00ecnh <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-troubleshooting-quick-checklist\/\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"math\">)<\/span>.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5 lu\u1ed3ng d\u1eef li\u1ec7u: <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/open-system-interconnect-osi-model-seven-layers-networking\/\">OSI<\/a> m\u00f4 h\u00ecnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5 v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o ra \u1edf c\u00e1c l\u1edbp cao h\u01a1n (\u1ee9ng d\u1ee5ng, giao th\u1ee9c)<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c truy\u1ec1n xu\u1ed1ng thi\u1ebft b\u1ecb m\u1ea1ng (b\u1ed9 chuy\u1ec3n m\u1ea1ch\/b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn)<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebft b\u1ecb g\u1eedi t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ebfn c\u1ed5ng SFP<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un SFP chuy\u1ec3n \u0111\u1ed5i v\u00e0 truy\u1ec1n t\u00edn hi\u1ec7u th\u00f4ng qua:<\/p>\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\" target=\"_blank\" rel=\"\">C\u00e1p quang<\/a><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-twisted-pair-copper-cable-and-how-does-it-work\/\" target=\"_blank\" rel=\"\">C\u00e1p Ethernet \u0111\u1ed3ng<\/a><\/p><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n: <strong>SFP = c\u1ea7u n\u1ed1i gi\u1eefa thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n v\u00e0 m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn v\u1eadt l\u00fd<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5 tri\u1ec3n khai th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y xem x\u00e9t m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 chuy\u1ec3n m\u1ea1ch c\u00f3 nhi\u1ec1u c\u1ed5ng SFP<\/p><\/li>\n\n\n\n<li><p>K\u1ef9 s\u01b0 c\u00f3 th\u1ec3 c\u1eafm v\u00e0o:<\/p>\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/478230.htm\" target=\"_self\"><strong>SFP SX 1G<\/strong> <\/a>cho c\u00e1p quang kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/475586.htm\" target=\"_self\"><strong>10G LR SFP+<\/strong><\/a> cho c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476770.htm\" target=\"_self\"><strong>SFP RJ45<\/strong><\/a> cho k\u1ebft n\u1ed1i \u0111\u1ed3ng<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb, nh\u01b0ng kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i kh\u00e1c nhau\u2014ho\u00e0n to\u00e0n nh\u1edd c\u00e1c m\u00f4-\u0111un SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>Truy\u1ec1n d\u1eabn hai chi\u1ec1u<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng thay th\u1ebf n\u00f3ng linh ho\u1ea1t<\/p><\/li>\n\n\n\n<li><p>Th\u00f4ng minh t\u00edch h\u1ee3p s\u1eb5n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t l\u1edbp giao di\u1ec7n then ch\u1ed1t, cho ph\u00e9p c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1edf r\u1ed9ng quy m\u00f4 d\u1ec5 d\u00e0ng<\/p><\/li>\n\n\n\n<li><p>Linh ho\u1ea1t<\/p><\/li>\n\n\n\n<li><p>D\u1ec5 b\u1ea3o tr\u00ec<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 SFP so v\u1edbi SFP+ so v\u1edbi QSFP: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi m\u1ea1ng ph\u00e1t tri\u1ec3n t\u1eeb 1G l\u00ean 10G, 40G v\u00e0 cao h\u01a1n, c\u00e1c d\u1ea1ng module thu ph\u00e1t kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u b\u0103ng th\u00f4ng ng\u00e0y c\u00e0ng t\u0103ng. C\u00e1c d\u1ea1ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 SFP, SFP+ v\u00e0 QSFP\u2014nh\u01b0ng vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9, \u1ee9ng d\u1ee5ng v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\">t\u01b0\u01a1ng th\u00edch<\/a>.<\/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\/3b42dca3490a4ed7834a39d18dfd50ff.jpg\" alt=\"SFP vs. SFP+ vs. QSFP: What Is the Difference?\" class=\"wp-image-2441\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b42dca3490a4ed7834a39d18dfd50ff.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b42dca3490a4ed7834a39d18dfd50ff-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b42dca3490a4ed7834a39d18dfd50ff-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b42dca3490a4ed7834a39d18dfd50ff-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b42dca3490a4ed7834a39d18dfd50ff-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 So s\u00e1nh t\u1ed1c \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n nh\u1ea5t l\u00e0 <strong>100G<\/strong>:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 177px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"177\"><p>Lo\u1ea1i m\u00f4-\u0111un<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u00e1c ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"177\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\"><strong>SFP<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1 Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1000BASE-SX \/ LX \/ T<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"177\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\"><strong>SFP+<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10 Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10GBASE-SR \/ LR \/ ER<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"177\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\"><strong>QSFP<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40 Gbps (QSFP+) \/ 100 Gbps (QSFP28)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\">40GBASE-SR4<\/a> \/ <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\">100GBASE-LR4<\/a><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP = 1G<\/p><\/li>\n\n\n\n<li><p>SFP+ = 10G<\/p><\/li>\n\n\n\n<li><p>QSFP = 40G \/ 100G+<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 Y\u1ebfu t\u1ed1 h\u00ecnh d\u00e1ng v\u00e0 thi\u1ebft k\u1ebf c\u1ed5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 tr\u00f4ng t\u01b0\u01a1ng t\u1ef1 nhau, c\u00e1c module n\u00e0y kh\u00f4ng th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SFP v\u00e0 SFP+<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>C\u00f9ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd<\/p><\/li>\n\n\n\n<li><p>L\u1eafp v\u1eeba c\u00f9ng lo\u1ea1i c\u1ed5ng (trong nhi\u1ec1u thi\u1ebft b\u1ecb)<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>QSFP<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>Y\u1ebfu t\u1ed1 h\u00ecnh d\u00e1ng l\u1edbn h\u01a1n<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn m\u1eadt \u0111\u1ed9 cao, \u0111a k\u00eanh<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482750.htm\">C\u00e1c module QSFP <\/a>s\u1eed d\u1ee5ng nhi\u1ec1u k\u00eanh (v\u00ed d\u1ee5: 4\u00d710G = 40G), v\u00ec v\u1eady ch\u00fang y\u00eau c\u1ea7u c\u1ed5ng ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 T\u01b0\u01a1ng th\u00edch c\u1ed5ng (quan tr\u1ecdng \u0111\u1ed1i v\u1edbi tri\u1ec3n khai th\u1ef1c t\u1ebf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u01b0\u01a1ng th\u00edch l\u00e0 m\u1ed9t trong nh\u1eefng l\u0129nh v\u1ef1c d\u1ec5 g\u00e2y hi\u1ec3u l\u1ea7m nh\u1ea5t:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u01b0\u01a1ng th\u00edch gi\u1eefa SFP \u2194 SFP+<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module SFP th\u01b0\u1eddng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong c\u1ed5ng SFP+ (t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c)<\/p><\/li>\n\n\n\n<li><p>NH\u01afNG:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 s\u1ebd b\u1ecb gi\u1edbi h\u1ea1n \u1edf m\u1ee9c 1G<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebft b\u1ecb ph\u1ea3i h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng n\u00e0y<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SFP+ trong c\u1ed5ng SFP<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n\n\n\n<li><p>C\u1ed5ng SFP kh\u00f4ng th\u1ec3 x\u1eed l\u00fd t\u00edn hi\u1ec7u 10G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u01b0\u01a1ng th\u00edch QSFP<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c c\u1ed5ng QSFP kh\u00f4ng t\u01b0\u01a1ng th\u00edch tr\u1ef1c ti\u1ebfp v\u1edbi SFP\/SFP+<\/p><\/li>\n\n\n\n<li><p>Tuy nhi\u00ean:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ed1 c\u1ed5ng QSFP h\u1ed7 tr\u1ee3 c\u00e1p chia nh\u00e1nh (v\u00ed d\u1ee5: 1\u00d7QSFP \u2192 4\u00d7SFP+)<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n x\u00e1c minh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb v\u00e0 h\u1ed7 tr\u1ee3 firmware tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 C\u00e1c t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i lo\u1ea1i module \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u1ee5 th\u1ec3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 SFP (1G)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ec7 th\u1ed1ng c\u0169<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng l\u1edbp truy c\u1eadp<\/p><\/li>\n\n\n\n<li><p>Ethernet c\u00f4ng nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tri\u1ec3n khai nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 SFP+ (10G)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng l\u00f5i doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>T\u1ea7ng t\u1ed5ng h\u1ee3p trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i t\u1eeb m\u00e1y ch\u1ee7 \u0111\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y hi\u1ec7n l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 QSFP (40G\/100G+)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ebfn tr\u00fac spine-leaf trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\" target=\"_blank\" rel=\"\">\u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao<\/a> (T\u00ednh to\u00e1n hi\u1ec7u n\u0103ng cao \u2013 HPC)<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u00f4i tr\u01b0\u1eddng b\u0103ng th\u00f4ng c\u1ef1c cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 \u0110\u00e1nh \u0111\u1ed5i gi\u1eefa chi ph\u00ed v\u00e0 hi\u1ec7u n\u0103ng<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 125px;\"\/><col style=\"width: 123px;\"\/><col style=\"width: 186px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"125\"><p>M\u00f4-\u0111un<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"123\"><p>Cost<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"186\"><p>Hi\u1ec7u su\u1ea5t<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ng\u01b0\u1eddi mua \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"125\"><p>SFP<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"123\"><p>Th\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"186\"><p>Basic<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf \/ m\u1ea1ng c\u0169<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"125\"><p>SFP+<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"123\"><p>M\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"186\"><p>Cao<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CNTT doanh nghi\u1ec7p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"125\"><p>QSFP<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"123\"><p>Cao<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"186\"><p>R\u1ea5t cao<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u \/ quy m\u00f4 si\u00eau l\u1edbn<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn SFP+ l\u00e0m \u0111i\u1ec3m c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 hi\u1ec7u n\u0103ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 Nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf th\u01b0\u1eddng g\u1eb7p (D\u1ef1a tr\u00ean tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf v\u00e0 ph\u1ea3n h\u1ed3i t\u1eeb c\u1ed9ng \u0111\u1ed3ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed1 g\u1eafng s\u1eed d\u1ee5ng SFP+ trong c\u1ed5ng SFP \u2192 kh\u00f4ng b\u1eaft \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>Tr\u1ed9n c\u00e1c t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau \u2192 c\u1ed5ng b\u1ecb t\u1eaft<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng module kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u2192 l\u1ed7i \u201ckh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c b\u1ed9 thu ph\u00e1t\u201d<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y kh\u00f4ng ph\u1ea3i s\u1ef1 c\u1ed1 ph\u1ea7n c\u1ee9ng \u2014 m\u00e0 l\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 c\u1ea5u h\u00ecnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP, SFP+ v\u00e0 QSFP \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u1ee9c t\u1ed1c \u0111\u1ed9 v\u00e0 quy m\u00f4 m\u1ea1ng kh\u00e1c nhau<\/p><\/li>\n\n\n\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch kh\u00f4ng ch\u1ec9 \u1edf m\u1eb7t v\u1eadt l\u00fd \u2014 m\u00e0 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ed7 tr\u1ee3 thi\u1ebft b\u1ecb v\u00e0 firmware<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c l\u1ef1a ch\u1ecdn module ph\u00f9 h\u1ee3p \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n nh\u1eafc gi\u1eefa:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Y\u00eau c\u1ea7u v\u1ec1 t\u1ed1c \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng c\u1ee7a h\u1ea1 t\u1ea7ng<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-link-budget-calculation-formula-example\/\" target=\"_blank\" rel=\"\">Ng\u00e2n s\u00e1ch<\/a><\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch SFP ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00f4ng ngh\u1ec7 SFP \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n Th\u1ecfa thu\u1eadn Ngu\u1ed3n \u0110a (MSA) nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c, nh\u01b0ng trong th\u1ef1c t\u1ebf tri\u1ec3n khai th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n m\u1ed9t th\u00e1ch th\u1ee9c l\u1edbn: t\u00ednh t\u01b0\u01a1ng th\u00edch kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o trong th\u1ef1c ti\u1ec5n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ef1c t\u1ebf, m\u1ed9t l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng t\u00ecm ki\u1ebfm t\u1eeb kh\u00f3a \u201cc\u00f4ng ngh\u1ec7 SFP\u201d \u0111\u1ebfn t\u1eeb nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u0111ang c\u1ed1 g\u1eafng gi\u1ea3i quy\u1ebft c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 l\u1ed7i b\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3, m\u1ea5t k\u1ebft n\u1ed1i v\u00e0 h\u1ea1n ch\u1ebf theo nh\u00e0 cung c\u1ea5p.<\/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\/93158b71d2484d18a93fcba8a30f2041.jpg\" alt=\"Common SFP Compatibility Problems\" class=\"wp-image-2442\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/93158b71d2484d18a93fcba8a30f2041.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/93158b71d2484d18a93fcba8a30f2041-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/93158b71d2484d18a93fcba8a30f2041-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/93158b71d2484d18a93fcba8a30f2041-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/93158b71d2484d18a93fcba8a30f2041-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">L\u1ed7i \u201cB\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d (Kh\u00f3a theo nh\u00e0 cung c\u1ea5p)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 c\u1ea3nh b\u00e1o \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d ho\u1eb7c \u201ckh\u00f4ng h\u1ed7 tr\u1ee3 SFP\u201d hi\u1ec3n th\u1ecb tr\u00ean c\u00e1c switch v\u00e0 router.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do x\u1ea3y ra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec1u nh\u00e0 cung c\u1ea5p (v\u00ed d\u1ee5:, <a href=\"https:\/\/www.l-p.com\/products\/476756.htm\" target=\"_self\">Cisco<\/a>, <a href=\"https:\/\/www.l-p.com\/products\/491627.htm\" target=\"_self\">Juniper<br><\/a>, <a href=\"https:\/\/www.l-p.com\/products\/491634.htm\" target=\"_self\">HPE<\/a>) tri\u1ec3n khai x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean EEPROM<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebft b\u1ecb ki\u1ec3m tra:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>ID Nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>M\u00e3 linh ki\u1ec7n<\/p><\/li>\n\n\n\n<li><p>Ch\u1eef k\u00fd s\u1ed1 \/ m\u00e3 h\u00f3a<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u00f4-\u0111un kh\u00f4ng n\u1eb1m trong danh s\u00e1ch \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, c\u1ed5ng c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1eb7n li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>V\u00f4 hi\u1ec7u h\u00f3a giao di\u1ec7n<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o c\u1ea3nh b\u00e1o<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng tin tr\u1ecdng t\u00e2m: \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 c\u1ed1 ph\u1ea7n c\u1ee9ng, m\u00e0 l\u00e0 h\u1ea1n ch\u1ebf \u1edf c\u1ea5p \u0111\u1ed9 firmware th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <em>kh\u00f3a nh\u00e0 cung c\u1ea5p<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u00f3a nh\u00e0 cung c\u1ea5p trong h\u1ec7 sinh th\u00e1i SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f3a nh\u00e0 cung c\u1ea5p l\u00e0 r\u00e0o c\u1ea3n th\u01b0\u01a1ng m\u1ea1i v\u00e0 k\u1ef9 thu\u1eadt l\u1edbn trong tri\u1ec3n khai SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c t\u00ecnh hu\u1ed1ng ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 chuy\u1ec3n m\u1ea1ch Cisco t\u1eeb ch\u1ed1i <a href=\"https:\/\/www.l-p.com\/products\/482749.htm\" target=\"_self\">Thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/a><\/p><\/li>\n\n\n\n<li><p>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn do ISP cung c\u1ea5p y\u00eau c\u1ea7u c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed9c quy\u1ec1n<\/p><\/li>\n\n\n\n<li><p>C\u1eadp nh\u1eadt firmware si\u1ebft ch\u1eb7t quy t\u1eafc t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1c \u0111\u1ed9ng kinh doanh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed cao h\u01a1n cho c\u00e1c m\u00f4-\u0111un OEM<\/p><\/li>\n\n\n\n<li><p>Linh ho\u1ea1t h\u1ea1n ch\u1ebf trong m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>R\u00e0ng bu\u1ed9c mua s\u1eafm \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9i IT<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do l\u1edbn nh\u1ea5t khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng ch\u1ee7 \u0111\u1ed9ng t\u00ecm ki\u1ebfm:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201c<a href=\"https:\/\/www.l-p.com\/products\/476762.htm\" target=\"_self\">c\u00e1c m\u00f4-\u0111un SFP t\u01b0\u01a1ng th\u00edch v\u1edbi Cisco<\/a>\u201d ho\u1eb7c \u201cSFP c\u1ee7a b\u00ean th\u1ee9 ba c\u00f3 an to\u00e0n kh\u00f4ng\u201d<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 c\u1ed1 li\u00ean k\u1ebft (kh\u00f4ng c\u00f3 \u0111\u00e8n li\u00ean k\u1ebft \/ kh\u00f4ng k\u1ebft n\u1ed1i)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c t\u00ecm ki\u1ebfm nhi\u1ec1u kh\u00e1c l\u00e0 m\u00f4-\u0111un SFP kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 \u0111\u00e8n li\u00ean k\u1ebft tr\u00ean c\u1ed5ng switch<\/p><\/li>\n\n\n\n<li><p>Giao di\u1ec7n v\u1eabn \u1edf tr\u1ea1ng th\u00e1i \u201cdown\/down\u201d<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t ph\u00eda \u0111\u00e3 k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u26a0\ufe0f Sai l\u1ec7ch t\u1ed1c \u0111\u1ed9 (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/difference-between-sfp-and-sfp-plus-transceivers\/\" target=\"_blank\" rel=\"\">1G so v\u1edbi 10G<\/a> c\u1ea5u h\u00ecnh)<\/p><\/li>\n\n\n\n<li><p>\u26a0\ufe0f Lo\u1ea1i c\u00e1p quang kh\u00f4ng \u0111\u00fang (\u0111\u01a1n mode so v\u1edbi \u0111a mode)<\/p><\/li>\n\n\n\n<li><p>\u26a0\ufe0f \u0110\u1ea7u n\u1ed1i c\u00e1p quang b\u1ea9n ho\u1eb7c b\u1ecb h\u01b0 h\u1ecfng<\/p><\/li>\n\n\n\n<li><p>\u26a0\ufe0f Lo\u1ea1i m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n\n\n\n<li><p>\u26a0\ufe0f V\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng c\u00e1ch cho ph\u00e9p (t\u1ed5n hao quang qu\u00e1 cao)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, ng\u01b0\u1eddi d\u00f9ng gi\u1ea3 \u0111\u1ecbnh m\u00f4-\u0111un b\u1ecb l\u1ed7i, trong khi nguy\u00ean nh\u00e2n g\u1ed1c l\u1ea1i l\u00e0 <strong>sai l\u1ec7ch \u1edf t\u1ea7ng v\u1eadt l\u00fd<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u1ea1n ch\u1ebf firmware v\u00e0 \u0111i\u1ec1u khi\u1ec3n ph\u1ea7n m\u1ec1m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i ng\u00e0y c\u00e0ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t m\u00f4-\u0111un SFP \u1edf c\u1ea5p \u0111\u1ed9 firmware.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng g\u00ec firmware ki\u1ec3m so\u00e1t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Danh s\u00e1ch tr\u1eafng b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c ph\u00e9p<\/p><\/li>\n\n\n\n<li><p>H\u00e0nh vi \u0111\u00e0m ph\u00e1n t\u1ed1c \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>Ph\u00e1t hi\u1ec7n t\u1ef1 \u0111\u1ed9ng lo\u1ea1i m\u00f4-\u0111un<\/p><\/li>\n\n\n\n<li><p>Logic k\u00edch ho\u1ea1t\/v\u00f4 hi\u1ec7u h\u00f3a c\u1ed5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t m\u00f4-\u0111un ho\u1ea1t \u0111\u1ed9ng t\u1ed1t tr\u00ean phi\u00ean b\u1ea3n firmware n\u00e0y nh\u01b0ng c\u00f3 th\u1ec3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng sau khi c\u1eadp nh\u1eadt<\/p><\/li>\n\n\n\n<li><p>\u201cC\u00e1c t\u00ecnh hu\u1ed1ng \u201dt\u01b0\u01a1ng th\u00edch h\u00f4m qua, b\u1ecb ch\u1eb7n h\u00f4m nay\u201d kh\u00e1 ph\u1ed5 bi\u1ebfn trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t ph\u1ee5 thu\u1ed9c ng\u1ea7m gi\u1eefa h\u1ec7 sinh th\u00e1i ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u1ea5n \u0111\u1ec1 c\u00f4ng su\u1ea5t quang v\u00e0 sai l\u1ec7ch t\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi m\u1ed9t m\u00f4-\u0111un \u201ct\u01b0\u01a1ng th\u00edch\u201d, c\u00e1c s\u1ef1 c\u1ed1 \u1edf t\u1ea7ng v\u1eadt l\u00fd v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (TX) th\u1ea5p \u2192 t\u00edn hi\u1ec7u y\u1ebfu<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t nh\u1eadn (RX) cao \u2192 qu\u00e1 t\u1ea3i<\/p><\/li>\n\n\n\n<li><p>Sai l\u1ec7ch c\u00e1p quang (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\" target=\"_blank\" rel=\"\">SMF so v\u1edbi MMF<\/a>)<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\" target=\"_blank\" rel=\"\">B\u01b0\u1edbc s\u00f3ng<br><\/a> s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch (850nm so v\u1edbi 1310nm so v\u1edbi 1550nm)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i ng\u1eaft qu\u00e3ng<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t g\u00f3i tin<\/p><\/li>\n\n\n\n<li><p>hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft (chu k\u1ef3 b\u1eadt\/t\u1eaft)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u00f4ng tin quan tr\u1ecdng ch\u00ednh (L\u00fd do nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y r\u1ea5t ph\u1ed5 bi\u1ebfn)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i h\u1ecdc ch\u1ee7 ch\u1ed1t t\u1eeb c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a m\u00f4-\u0111un SFP kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 ph\u1ea7n c\u1ee9ng\u2014m\u00e0 l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c ch\u00ednh s\u00e1ch firmware<\/p><\/li>\n\n\n\n<li><p>h\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>\u0111i\u1ec1u ki\u1ec7n l\u1edbp v\u1eadt l\u00fd<\/p><\/li>\n\n\n\n<li><p>c\u00e1c thi\u1ebft l\u1eadp c\u1ea5u h\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c t\u00ecm ki\u1ebfm v\u1ec1 \u201cc\u00f4ng ngh\u1ec7 SFP\u201d th\u01b0\u1eddng \u0111\u01b0a ng\u01b0\u1eddi d\u00f9ng tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c t\u00ecnh hu\u1ed1ng kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 thay v\u00ec c\u00e1c gi\u1ea3i th\u00edch l\u00fd thuy\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00f3m T\u1eaft<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch SFP ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c L\u1ed7i b\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (kh\u00f3a nh\u00e0 cung c\u1ea5p)<\/p><\/li>\n\n\n\n<li><p>\u274c Ch\u1eb7n m\u00f4-\u0111un d\u1ef1a tr\u00ean firmware<\/p><\/li>\n\n\n\n<li><p>\u274c Kh\u00f4ng c\u00f3 li\u00ean k\u1ebft ho\u1eb7c li\u00ean k\u1ebft kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>\u274c S\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch t\u00edn hi\u1ec7u quang v\u00e0 s\u1ef1 c\u1ed1 l\u1edbp v\u1eadt l\u00fd<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 C\u00e1ch ch\u1ecdn m\u00f4-\u0111un SFP ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00f4-\u0111un SFP \u0111\u00fang l\u00e0 m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng nh\u1ea5t trong thi\u1ebft k\u1ebf m\u1ea1ng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch l\u00e2u d\u00e0i. Trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf, ph\u1ea7n l\u1edbn c\u00e1c s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i kh\u00f4ng b\u1eaft ngu\u1ed3n t\u1eeb b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c c\u00e1p\u2014m\u00e0 do vi\u1ec7c ch\u1ecdn sai lo\u1ea1i SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh \u0111i\u1ec1u n\u00e0y, k\u1ef9 s\u01b0 \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4-\u0111un SFP d\u1ef1a tr\u00ean m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt then ch\u1ed1t: t\u1ed1c \u0111\u1ed9, kho\u1ea3ng c\u00e1ch, lo\u1ea1i s\u1ee3i quang, b\u01b0\u1edbc s\u00f3ng, lo\u1ea1i \u0111\u1ea7u n\u1ed1i v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb.<\/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\/2297bcf9497f4da68a4a8151705dd0e4.jpg\" alt=\"How to Choose the Right SFP Module\" class=\"wp-image-2443\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2297bcf9497f4da68a4a8151705dd0e4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2297bcf9497f4da68a4a8151705dd0e4-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2297bcf9497f4da68a4a8151705dd0e4-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2297bcf9497f4da68a4a8151705dd0e4-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2297bcf9497f4da68a4a8151705dd0e4-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Ch\u1ecdn d\u1ef1a tr\u00ean y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u1ebfu t\u1ed1 \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1ec1 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP 1G \u2192 m\u1ea1ng 1000BASE (l\u00f5i c\u0169 ho\u1eb7c l\u1edbp truy c\u1eadp)<\/p><\/li>\n\n\n\n<li><p>SFP+ 10G \u2192 x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>QSFP 25G \/ 40G \/ 100G \u2192 m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao v\u00e0 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc chung: Lu\u00f4n kh\u1edbp t\u1ed1c \u0111\u1ed9 SFP v\u1edbi kh\u1ea3 n\u0103ng c\u1ed5ng c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch\/b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o nhu c\u1ea7u m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Ch\u1ecdn d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP kh\u00e1c nhau \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c ph\u1ea1m vi kh\u00e1c nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/473141.htm\" target=\"_self\"><strong>SR<\/strong><\/a><strong> (Ph\u1ea1m vi ng\u1eafn)<\/strong> \u2192 l\u00ean t\u1edbi ~300 m (s\u1ee3i quang \u0111a mode)<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482487.htm\" target=\"_self\"><strong>LR<\/strong><\/a><strong> (Ph\u1ea1m vi xa)<\/strong> \u2192 l\u00ean t\u1edbi ~10 km (s\u1ee3i quang \u0111\u01a1n mode)<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/475852.htm\" target=\"_self\"><strong>ER<\/strong><\/a><strong>\/<\/strong><a href=\"https:\/\/www.l-p.com\/products\/476089.htm\" target=\"_self\"><strong>ZR<\/strong><\/a><strong> (Ph\u1ea1m vi m\u1edf r\u1ed9ng)<\/strong> \u2192 40 km\u201380 km tr\u1edf l\u00ean (m\u1ea1ng nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng tin quan tr\u1ecdng: Kho\u1ea3ng c\u00e1ch kh\u00f4ng linh ho\u1ea1t\u2014v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n \u0111\u01b0\u1ee3c ghi nh\u1eadn s\u1ebd d\u1eabn \u0111\u1ebfn m\u1ea5t g\u00f3i ho\u1eb7c l\u1ed7i li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Lo\u1ea1i s\u1ee3i quang: \u0110\u01a1n mode so v\u1edbi \u0111a mode<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i s\u1ee3i quang l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eabn \u1ed5n \u0111\u1ecbnh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c gh\u00e9p v\u1edbi b\u01b0\u1edbc s\u00f3ng 850nm (<a href=\"https:\/\/www.l-p.com\/products\/475415.htm\" target=\"_self\">M\u00f4-\u0111un SR<\/a>)<\/p><\/li>\n\n\n\n<li><p>Chi ph\u00ed th\u1ea5p h\u01a1n, t\u00e1n s\u1eafc cao h\u01a1n tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 1310nm ho\u1eb7c 1550nm<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao t\u00edn hi\u1ec7u th\u1ea5p h\u01a1n, ph\u00f9 h\u1ee3p cho m\u1ea1ng l\u00f5i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng kh\u1edbp gi\u1eefa lo\u1ea1i s\u1ee3i v\u00e0 m\u00f4-\u0111un = kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i ho\u1eb7c t\u00edn hi\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 L\u1ef1a ch\u1ecdn b\u01b0\u1edbc s\u00f3ng (Y\u1ebfu t\u1ed1 then ch\u1ed1t v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng quang h\u1ecdc c\u1ee5 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>850nm \u2192 \u0110a ch\u1ebf \u0111\u1ed9 (SR)<\/p><\/li>\n\n\n\n<li><p>1310nm \u2192 \u0110\u01a1n ch\u1ebf \u0111\u1ed9 ti\u00eau chu\u1ea9n (LR)<\/p><\/li>\n\n\n\n<li><p>1550nm \u2192 Ph\u1ea1m vi xa m\u1edf r\u1ed9ng (ER\/ZR)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc quan tr\u1ecdng: C\u1ea3 hai \u0111\u1ea7u k\u1ebft n\u1ed1i \u0111\u1ec1u ph\u1ea3i s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng kh\u1edbp nhau, tr\u1eeb khi d\u00f9ng m\u00f4-\u0111un BiDi (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">Hai chi\u1ec1u<\/a>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Lo\u1ea1i \u0111\u1ea7u n\u1ed1i (LC, SC, RJ45)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP kh\u00e1c nhau s\u1eed d\u1ee5ng c\u00e1c giao di\u1ec7n v\u1eadt l\u00fd kh\u00e1c nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\" target=\"_self\">\u0110\u1ea7u n\u1ed1i LC<\/a> \u2192 ph\u1ed5 bi\u1ebfn nh\u1ea5t trong SFP\/SFP+ quang<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea7u n\u1ed1i SC \u2192 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng c\u0169<\/p><\/li>\n\n\n\n<li><p>RJ45 (SFP \u0111\u1ed3ng) \u2192 Ethernet qua c\u00e1p \u0111\u1ed3ng (Cat5e\/Cat6)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>D\u00f9ng LC cho m\u1ea1ng s\u1ee3i quang hi\u1ec7n \u0111\u1ea1i<\/p><\/li>\n\n\n\n<li><p>Ch\u1ec9 d\u00f9ng SFP RJ45 cho nhu c\u1ea7u c\u00e1p \u0111\u1ed3ng kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 T\u00ednh t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb (Y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong th\u1ef1c t\u1ebf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi t\u1ea5t c\u1ea3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u1edbp, m\u00f4-\u0111un v\u1eabn c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i do h\u1ea1n ch\u1ebf \u1edf c\u1ea5p thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n ph\u1ea3i ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Danh s\u00e1ch t\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p switch\/router<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 firmware \u0111\u1ed1i v\u1edbi quang h\u1ecdc b\u00ean th\u1ee9 ba<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c c\u00f3 cho ph\u00e9p hay ch\u1eb7n \u201cSFP chung chung\u201d hay kh\u00f4ng<\/p><\/li>\n\n\n\n<li><p>Y\u00eau c\u1ea7u v\u1ec1 m\u00e3 h\u00f3a (l\u1eadp tr\u00ecnh EEPROM)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cisco<\/p><\/li>\n\n\n\n<li><p>Juniper<br><\/p><\/li>\n\n\n\n<li><p>HPE<\/p><\/li>\n\n\n\n<li><p>MikroTik<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Nh\u1eadn th\u1ee9c c\u1ed1t l\u00f5i: Chi\u1ebfn l\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u00fang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh l\u1ef1a ch\u1ecdn SFP \u0111\u00e1ng tin c\u1eady tu\u00e2n theo th\u1ee9 t\u1ef1 sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb tr\u01b0\u1edbc ti\u00ean (nh\u00e0 cung c\u1ea5p + firmware)<\/p><\/li>\n\n\n\n<li><p>Kh\u1edbp t\u1ed1c \u0111\u1ed9 (1G \/ 10G \/ 25G+)<\/p><\/li>\n\n\n\n<li><p>Y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch (SR \/ LR \/ ER)<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i s\u1ee3i (MMF so v\u1edbi SMF)<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed3ng b\u1ed9 b\u01b0\u1edbc s\u00f3ng (850 \/ 1310 \/ 1550nm)<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i (LC \/ RJ45 \/ SC)<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u2605 Sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u ng\u01b0\u1eddi ch\u1ec9 t\u1eadp trung v\u00e0o:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cSFP n\u00e0y c\u00f3 v\u1eeba khe c\u1eafm c\u1ee7a t\u00f4i kh\u00f4ng?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf, th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed3ng th\u1eddi c\u1ee7a: t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n + quang + firmware<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ch\u1ecdn m\u00f4-\u0111un SFP ph\u00f9 h\u1ee3p, lu\u00f4n c\u00e2n b\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec7u n\u0103ng (t\u1ed1c \u0111\u1ed9 + kho\u1ea3ng c\u00e1ch)<\/p><\/li>\n\n\n\n<li><p>L\u1edbp v\u1eadt l\u00fd (s\u1ee3i + b\u01b0\u1edbc s\u00f3ng + \u0111\u1ea7u n\u1ed1i)<\/p><\/li>\n\n\n\n<li><p>L\u1edbp h\u1ec7 th\u1ed1ng (t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb + firmware)<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP: C\u00e1ch kh\u1eafc ph\u1ee5c l\u1ed7i kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i, l\u1ed7i v\u00e0 m\u1ea5t \u1ed5n \u0111\u1ecbnh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng th\u1ef1c t\u1ebf, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-issue-troubleshooting-guide\/\">C\u00e1c s\u1ef1 c\u1ed1 SFP<\/a> hi\u1ebfm khi do m\u1ed9t \u0111i\u1ec3m l\u1ed7i duy nh\u1ea5t g\u00e2y ra. Thay v\u00e0o \u0111\u00f3, ch\u00fang th\u01b0\u1eddng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c v\u1ea5n \u0111\u1ec1 \u1edf t\u1ea7ng v\u1eadt l\u00fd, sai l\u1ec7ch c\u1ea5u h\u00ecnh ho\u1eb7c h\u1ea1n ch\u1ebf t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n n\u00e0y cung c\u1ea5p m\u1ed9t khu\u00f4n kh\u1ed5 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u1ef1c ti\u1ec5n, t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c s\u1ef1 c\u1ed1 SFP ph\u1ed5 bi\u1ebfn nh\u1ea5t, bao g\u1ed3m: kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i, k\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn, c\u00f4ng su\u1ea5t quang th\u1ea5p v\u00e0 l\u1ed7i kh\u00f4ng kh\u1edbp module.<\/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\/4ec7f698b3a4457e9d6e5c35e7a137ba.jpg\" alt=\"SFP Troubleshooting: How to Fix No Link, Errors, and Instability\" class=\"wp-image-2444\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4ec7f698b3a4457e9d6e5c35e7a137ba.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4ec7f698b3a4457e9d6e5c35e7a137ba-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4ec7f698b3a4457e9d6e5c35e7a137ba-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4ec7f698b3a4457e9d6e5c35e7a137ba-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4ec7f698b3a4457e9d6e5c35e7a137ba-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u00e8n b\u00e1o k\u1ebft n\u1ed1i kh\u00f4ng s\u00e1ng (giao di\u1ec7n t\u1eaft \/ kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 s\u1ef1 c\u1ed1 SFP \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o nhi\u1ec1u nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00e8n LED tr\u00ean c\u1ed5ng switch<\/p><\/li>\n\n\n\n<li><p>Tr\u1ea1ng th\u00e1i giao di\u1ec7n hi\u1ec3n th\u1ecb down\/down<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng \u0111i qua li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udee0\ufe0f C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: Ki\u1ec3m tra k\u1ebft n\u1ed1i v\u1eadt l\u00fd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o module SFP \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1ea7y \u0111\u1ee7 v\u00e0o c\u1ed5ng<\/p><\/li>\n\n\n\n<li><p>C\u1eafm l\u1ea1i module ch\u1eafc ch\u1eafn<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i s\u1ee3i quang xem c\u00f3 b\u1ee5i ho\u1eb7c h\u01b0 h\u1ecfng kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2: X\u00e1c minh lo\u1ea1i c\u00e1p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn s\u1ef1 ph\u00f9 h\u1ee3p gi\u1eefa s\u1ee3i quang \u0111\u01a1n mode v\u00e0 \u0111a mode<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra ph\u00e2n c\u1ef1c \u0111\u00fang (Tx \u2194 Rx \u0111\u01b0\u1ee3c ho\u00e1n \u0111\u1ed5i ch\u00ednh x\u00e1c)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3: X\u00e1c th\u1ef1c c\u00e0i \u0111\u1eb7t t\u1ed1c \u0111\u1ed9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp c\u00f9ng t\u1ed1c \u0111\u1ed9 (1G \/ 10G)<\/p><\/li>\n\n\n\n<li><p>V\u00f4 hi\u1ec7u h\u00f3a t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng n\u1ebfu nh\u00e0 s\u1ea3n xu\u1ea5t y\u00eau c\u1ea7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 4: Ki\u1ec3m tra b\u1eb1ng module t\u1ed1t \u0111\u00e3 bi\u1ebft<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thay th\u1ebf b\u1eb1ng module SFP \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/p><\/li>\n\n\n\n<li><p>Gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa s\u1ef1 c\u1ed1 ph\u1ea7n c\u1ee9ng v\u00e0 s\u1ef1 c\u1ed1 c\u1ea5u h\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn (k\u1ebft n\u1ed1i l\u00ean\/xu\u1ed1ng ng\u1eaft qu\u00e3ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn th\u01b0\u1eddng kh\u00f3 ch\u1ea9n \u0111o\u00e1n h\u01a1n v\u00ec li\u00ean k\u1ebft d\u01b0\u1eddng nh\u01b0 ho\u1ea1t \u0111\u1ed9ng \u2014 nh\u01b0ng ch\u1ec9 m\u1ed9t c\u00e1ch kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Giao di\u1ec7n li\u00ean t\u1ee5c chuy\u1ec3n tr\u1ea1ng th\u00e1i l\u00ean\/xu\u1ed1ng<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-does-packet-loss-mean-for-your-internet-connection\/\" target=\"_blank\" rel=\"\">M\u1ea5t g\u00f3i tin<\/a> ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>Gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 &amp; gi\u1ea3i ph\u00e1p:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f B\u1ea5t \u1ed5n t\u00edn hi\u1ec7u quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ea9n \u2192 l\u00e0m s\u1ea1ch b\u1eb1ng d\u1ee5ng c\u1ee5 l\u00e0m s\u1ea1ch s\u1ee3i quang chuy\u00ean d\u1ee5ng<\/p><\/li>\n\n\n\n<li><p>C\u00e1p s\u1ee3i quang b\u1ecb h\u01b0 h\u1ecfng \u2192 thay c\u00e1p n\u1ed1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f V\u1ea5n \u0111\u1ec1 m\u1ee9c c\u00f4ng su\u1ea5t<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (TX) th\u1ea5p ho\u1eb7c m\u1ea5t c\u00e2n b\u1eb1ng c\u00f4ng su\u1ea5t thu (RX) cao<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f V\u01b0\u1ee3t kho\u1ea3ng c\u00e1ch cho ph\u00e9p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng <a href=\"https:\/\/www.l-p.com\/products\/476764.htm\" target=\"_self\">module LR<\/a> v\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng c\u00e1ch quy \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>Thay b\u1eb1ng module ph\u00f9 h\u1ee3p v\u1edbi ph\u1ea1m vi c\u1ea7n thi\u1ebft (SR\/LR\/ER)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00f4ng su\u1ea5t quang th\u1ea5p \/ suy gi\u1ea3m t\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 c\u1ed1 n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 hi\u1ec7u n\u0103ng \u1ea9n nh\u01b0 \u0111\u1ed9 tr\u1ec5 ho\u1eb7c m\u1ea5t g\u00f3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i bit cao<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec7u su\u1ea5t m\u1ea1ng ch\u1eadm ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>DOM hi\u1ec3n th\u1ecb c\u00f4ng su\u1ea5t RX\/TX th\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi\u1ebfn l\u01b0\u1ee3c kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh \u0111\u1ed9 d\u00e0i s\u1ee3i quang n\u1eb1m trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a module<\/p><\/li>\n\n\n\n<li><p>Thay th\u1ebf c\u00e1p s\u1ee3i quang \u0111\u00e3 l\u00e3o h\u00f3a ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o kh\u1edbp \u0111\u00fang b\u01b0\u1edbc s\u00f3ng (850nm \/ 1310nm \/ 1550nm)<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh tr\u1ed9n l\u1eabn c\u00e1c lo\u1ea1i s\u1ee3i quang kh\u00f4ng t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 nh\u1eefng ch\u00eanh l\u1ec7ch nh\u1ecf v\u1ec1 c\u00f4ng su\u1ea5t quang c\u0169ng c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m hi\u1ec7u n\u0103ng \u0111\u00e1ng k\u1ec3 theo kho\u1ea3ng c\u00e1ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u201cB\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d ho\u1eb7c b\u1ecb module t\u1eeb ch\u1ed1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 \u1edf c\u1ea5p firmware, kh\u00f4ng ph\u1ea3i l\u1ed7i ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \u201ctransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>Giao di\u1ec7n b\u1ecb t\u1eaft qu\u1ea3n tr\u1ecb t\u1ef1 \u0111\u1ed9ng<\/p><\/li>\n\n\n\n<li><p>Ho\u1ea1t \u0111\u1ed9ng tr\u00ean thi\u1ebft b\u1ecb n\u00e0y nh\u01b0ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean thi\u1ebft b\u1ecb kh\u00e1c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi\u1ebfn l\u01b0\u1ee3c kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra danh s\u00e1ch t\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>C\u1eadp nh\u1eadt firmware b\u1ed9 chuy\u1ec3n m\u1ea1ch\/b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng module SFP do nh\u00e0 cung c\u1ea5p m\u00e3 h\u00f3a ho\u1eb7c module t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>V\u00f4 hi\u1ec7u h\u00f3a x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t (n\u1ebfu \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00e0 cho ph\u00e9p)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn tr\u00ean Cisco, Juniper v\u00e0 c\u00e1c h\u1ec7 sinh th\u00e1i doanh nghi\u1ec7p kh\u00e1c c\u00f3 quy t\u1eafc x\u00e1c th\u1ef1c nghi\u00eam ng\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u00eanh l\u1ec7ch t\u1ed1c \u0111\u1ed9 v\u00e0 c\u1ea5u h\u00ecnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n th\u01b0\u1eddng b\u1ecb b\u1ecf qua nh\u1ea5t g\u00e2y h\u1ecfng module SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t ph\u00eda hi\u1ec3n th\u1ecb c\u00f3 li\u00ean k\u1ebft, ph\u00eda kia th\u00ec kh\u00f4ng<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng \u1ed5n \u0111\u1ecbnh khi ch\u1ecbu t\u1ea3i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi\u1ebfn l\u01b0\u1ee3c kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u s\u1eed d\u1ee5ng c\u00f9ng t\u1ed1c \u0111\u1ed9 (v\u00ed d\u1ee5: 1G \u2194 1G)<\/p><\/li>\n\n\n\n<li><p>V\u00f4 hi\u1ec7u h\u00f3a t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng (n\u1ebfu c\u1ea7n)<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh c\u00e0i \u0111\u1eb7t song c\u00f4ng (khuy\u1ebfn ngh\u1ecb d\u00f9ng song c\u00f4ng to\u00e0n ph\u1ea7n)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Quy tr\u00ecnh g\u1ee1 l\u1ed7i h\u1ec7 th\u1ed1ng (th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ch\u1ea9n \u0111o\u00e1n nhanh, h\u00e3y tu\u00e2n theo c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 B\u01b0\u1edbc 1: Ki\u1ec3m tra l\u1edbp v\u1eadt l\u00fd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1p, s\u1ee3i quang, \u0111\u1ea7u n\u1ed1i, v\u1ecb tr\u00ed l\u1eafp module<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 B\u01b0\u1edbc 2: Ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 nh\u00e0 cung c\u1ea5p + m\u00e3 h\u00f3a module<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 B\u01b0\u1edbc 3: Ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra gi\u00e1 tr\u1ecb DOM (c\u00f4ng su\u1ea5t, nhi\u1ec7t \u0111\u1ed9)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 B\u01b0\u1edbc 4: Ki\u1ec3m tra c\u1ea5u h\u00ecnh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9, song c\u00f4ng, c\u00e0i \u0111\u1eb7t c\u1ed5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 B\u01b0\u1edbc 5: Ki\u1ec3m tra b\u1eb1ng c\u00e1ch thay th\u1ebf<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thay module SFP ho\u1eb7c c\u00e1p b\u1eb1ng \u0111\u01a1n v\u1ecb \u0111\u00e3 bi\u1ebft l\u00e0 t\u1ed1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin ch\u00ednh<br><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 SFP kh\u00f4ng ph\u1ea3i do l\u1ed7i ph\u1ea7n c\u1ee9ng, m\u00e0 xu\u1ea5t ph\u00e1t t\u1eeb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c Sai lo\u1ea1i s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>\u274c C\u1ea5u h\u00ecnh t\u1ed1c \u0111\u1ed9 sai<\/p><\/li>\n\n\n\n<li><p>\u274c Gi\u1edbi h\u1ea1n firmware c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>\u274c \u0110i\u1ec1u ki\u1ec7n quang h\u1ecdc k\u00e9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1 SFP m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1eaft \u0111\u1ea7u t\u1eeb l\u1edbp v\u1eadt l\u00fd (s\u1ee3i quang + v\u1ecb tr\u00ed l\u1eafp module)<\/p><\/li>\n\n\n\n<li><p>Ti\u1ebfp \u0111\u1ebfn ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc (gi\u00e1 tr\u1ecb DOM)<\/p><\/li>\n\n\n\n<li><p>Sau \u0111\u00f3 ki\u1ec3m tra c\u1ea5u h\u00ecnh v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>Cu\u1ed1i c\u00f9ng, c\u00f4 l\u1eadp nguy\u00ean nh\u00e2n b\u1eb1ng ki\u1ec3m tra thay th\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 c\u00f4ng ngh\u1ec7 SFP<\/h2>\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\/e07f5914600344b9a0e416bca41c0d56.jpg\" alt=\"FAQ About SFP Technology\" class=\"wp-image-2445\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e07f5914600344b9a0e416bca41c0d56.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e07f5914600344b9a0e416bca41c0d56-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e07f5914600344b9a0e416bca41c0d56-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e07f5914600344b9a0e416bca41c0d56-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e07f5914600344b9a0e416bca41c0d56-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 C\u00f4ng ngh\u1ec7 SFP trong m\u1ea1ng m\u00e1y t\u00ednh l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How to choose compatible SFP modules<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c b\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm th\u00e1o \u0111\u01b0\u1ee3c (Small Form-factor Pluggable) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ec3 cho ph\u00e9p k\u1ebft n\u1ed1i m\u1ea1ng linh ho\u1ea1t qua c\u00e1p quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng. Ch\u00fang chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u quang (ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i) \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 B\u1ed9 m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng qua c\u00e1p quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng<\/p><\/li>\n\n\n\n<li><p>M\u1edf r\u1ed9ng kho\u1ea3ng c\u00e1ch m\u1ea1ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n c\u1ee7a Ethernet<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p n\u00e2ng c\u1ea5p theo m\u00f4-\u0111un m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 T\u1ea1i sao b\u1ed9 SFP c\u1ee7a t\u00f4i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c kh\u00f4ng hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i k\u1ebft n\u1ed1i?<\/h3>\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>Lo\u1ea1i c\u00e1p quang kh\u00f4ng \u0111\u00fang (\u0111\u01a1n ch\u1ebf \u0111\u1ed9 so v\u1edbi \u0111a ch\u1ebf \u0111\u1ed9)<\/p><\/li>\n\n\n\n<li><p>T\u1ed1c \u0111\u1ed9 kh\u00f4ng kh\u1edbp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea7u n\u1ed1i c\u00e1p quang b\u1ecb b\u1ea9n ho\u1eb7c h\u01b0 h\u1ecfng<\/p><\/li>\n\n\n\n<li><p>B\u1ed9 m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1eb7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>V\u1ea5n \u0111\u1ec1 c\u1ea5u h\u00ecnh c\u1ed5ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 \u201cB\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng b\u00e1o n\u00e0y th\u01b0\u1eddng ch\u1ec9 ra vi\u1ec7c nh\u00e0 s\u1ea3n xu\u1ea5t h\u1ea1n ch\u1ebf ho\u1eb7c l\u1ed7i x\u00e1c th\u1ef1c firmware, khi b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn ch\u1eb7n c\u00e1c b\u1ed9 m\u00f4-\u0111un SFP c\u1ee7a b\u00ean th\u1ee9 ba ho\u1eb7c kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 m\u00f4-\u0111un SFP c\u1ee7a b\u00ean th\u1ee9 ba kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, c\u00e1c b\u1ed9 m\u00f4-\u0111un SFP c\u1ee7a b\u00ean th\u1ee9 ba ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c n\u1ebfu ch\u00fang:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt y\u00eau c\u1ea7u (t\u1ed1c \u0111\u1ed9, b\u01b0\u1edbc s\u00f3ng, <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-distance-real-world-range-optics-explained\/\" target=\"_blank\" rel=\"\">kho\u1ea3ng c\u00e1ch<br><\/a>)<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb \u0111\u00edch<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea1t y\u00eau c\u1ea7u m\u00e3 h\u00f3a ho\u1eb7c ki\u1ec3m tra firmware c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t (n\u1ebfu \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng th\u00f4ng qua c\u00e1c ch\u00ednh s\u00e1ch firmware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 C\u00e1c b\u1ed9 m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. C\u00e1c b\u1ed9 m\u00f4-\u0111un SFP l\u00e0 <strong>Cat5e\/Cat6 Ethernet<\/strong>, ngh\u0129a l\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o ho\u1eb7c th\u00e1o ra m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb, cho ph\u00e9p b\u1ea3o tr\u00ec v\u00e0 n\u00e2ng c\u1ea5p d\u1ec5 d\u00e0ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a c\u1ee7a m\u1ed9t b\u1ed9 m\u00f4-\u0111un SFP l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP SR \u2192 l\u00ean \u0111\u1ebfn ~300 m\u00e9t (s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9)<\/p><\/li>\n\n\n\n<li><p>SFP LR \u2192 l\u00ean \u0111\u1ebfn ~10 km (s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9)<\/p><\/li>\n\n\n\n<li><p>SFP ER\/ZR \u2192 40 km \u0111\u1ebfn 80 km ho\u1eb7c h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang b\u1ed9 m\u00f4-\u0111un SFP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean xem x\u00e9t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 y\u00eau c\u1ea7u (1G \/ 10G \/ 25G+)<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch (SR, LR, ER)<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i s\u1ee3i quang (\u0111\u01a1n ch\u1ebf \u0111\u1ed9 ho\u1eb7c \u0111a ch\u1ebf \u0111\u1ed9)<\/p><\/li>\n\n\n\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1ec1 b\u01b0\u1edbc s\u00f3ng (850nm, 1310nm, 1550nm)<\/p><\/li>\n\n\n\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa b\u1ed9 SFP quang v\u00e0 b\u1ed9 SFP \u0111\u1ed3ng l\u00e0 g\u00ec?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/478919.htm\" target=\"_self\"><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed1i \u0111a<\/strong><\/a> s\u1eed d\u1ee5ng s\u1ee3i quang \u0111\u1ec3 truy\u1ec1n d\u1eabn t\u1ed1c \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476813.htm\" target=\"_self\"><strong>SFP \u0111\u1ed3ng<\/strong><\/a><strong> (RJ45)<\/strong> s\u1eed d\u1ee5ng c\u00e1p Ethernet \u0111\u1ec3 k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn (th\u01b0\u1eddng t\u1ed1i \u0111a 100 m)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 T\u1ea1i sao c\u00e1c li\u00ean k\u1ebft SFP b\u1ecb nh\u1ea5p nh\u00e1y ho\u1eb7c tr\u1edf n\u00ean kh\u00f4ng \u1ed5n \u0111\u1ecbnh?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u1ee7a li\u00ean k\u1ebft th\u01b0\u1eddng do:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u quang k\u00e9m<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea7u n\u1ed1i c\u00e1p quang b\u1ecb b\u1ea9n ho\u1eb7c h\u01b0 h\u1ecfng<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng ho\u1eb7c lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a module<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe9 Module SFP OEM so v\u1edbi module SFP b\u00ean th\u1ee9 ba: Lo\u1ea1i n\u00e0o t\u1ed1t h\u01a1n?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn module SFP cho tri\u1ec3n khai th\u1ef1c t\u1ebf, m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng nh\u1ea5t l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng <a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/oem-sfp-modules-guide-compatibility\/\">OEM<\/a> (Nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c) hay module SFP t\u01b0\u01a1ng th\u00edch <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476093.htm\">b\u00ean th\u1ee9 ba.<\/a> Quy\u1ebft \u0111\u1ecbnh n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn chi ph\u00ed, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u1ea1ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u00e0i h\u1ea1n.<\/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\/6b685fd0185a4a0da9ca8ba3fbaace3b.jpg\" alt=\"OEM vs. Third-Party SFP Modules: Which Is Better?\" class=\"wp-image-2446\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b685fd0185a4a0da9ca8ba3fbaace3b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b685fd0185a4a0da9ca8ba3fbaace3b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b685fd0185a4a0da9ca8ba3fbaace3b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b685fd0185a4a0da9ca8ba3fbaace3b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b685fd0185a4a0da9ca8ba3fbaace3b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">So s\u00e1nh gi\u00e1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 Module SFP OEM<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi c\u00e1c nh\u00e0 cung c\u1ea5p switch (v\u00ed d\u1ee5: Cisco, Juniper, HPE)<\/p><\/li>\n\n\n\n<li><p>Chi ph\u00ed cao \u0111\u00e1ng k\u1ec3 do th\u01b0\u01a1ng hi\u1ec7u v\u00e0 ch\u1ee9ng nh\u1eadn<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng c\u00f3 gi\u00e1 cao g\u1ea5p 2\u201310 l\u1ea7n so v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 Module SFP b\u00ean th\u1ee9 ba<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi c\u00e1c nh\u00e0 cung c\u1ea5p quang h\u1ecdc \u0111\u1ed9c l\u1eadp<\/p><\/li>\n\n\n\n<li><p>Chi ph\u00ed th\u1ea5p h\u01a1n nhi\u1ec1u nh\u01b0ng v\u1eabn c\u00f3 ch\u1ee9c n\u0103ng l\u00f5i t\u01b0\u01a1ng t\u1ef1<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn nh\u1eb1m gi\u1ea3m CAPEX<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t: S\u1ef1 ch\u00eanh l\u1ec7ch chi ph\u00ed l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do l\u1edbn nh\u1ea5t khi\u1ebfn c\u00e1c doanh nghi\u1ec7p c\u00e2n nh\u1eafc l\u1ef1a ch\u1ecdn b\u00ean th\u1ee9 ba.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 Module OEM<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o 100% kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng g\u1eb7p s\u1ef1 c\u1ed1 x\u00e1c th\u1ef1c firmware ho\u1eb7c EEPROM<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 tin c\u1eady \u201cc\u1eafm v\u00e0o l\u00e0 ch\u1ea1y\u201d<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 Module b\u00ean th\u1ee9 ba<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>M\u00e3 h\u00f3a (l\u1eadp tr\u00ecnh EEPROM)<\/p><\/li>\n\n\n\n<li><p>H\u1ea1n ch\u1ebf firmware thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>Ch\u00ednh s\u00e1ch danh s\u00e1ch tr\u1eafng c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nhi\u1ec1u m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476093.htm\">c\u00e1c m\u00f4-\u0111un b\u00ean th\u1ee9 ba<br><\/a> c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cC\u1ea3nh b\u00e1o \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>V\u00f4 hi\u1ec7u h\u00f3a c\u1ed5ng tr\u00ean c\u00e1c phi\u00ean b\u1ea3n firmware nghi\u00eam ng\u1eb7t<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Hi\u1ec7u n\u0103ng v\u00e0 tri\u1ec3n khai th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ea3 module SFP OEM v\u00e0 b\u00ean th\u1ee9 ba th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n quang h\u1ecdc t\u01b0\u01a1ng t\u1ef1 nhau<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec7u n\u0103ng l\u00f5i (t\u1ed1c \u0111\u1ed9, b\u01b0\u1edbc s\u00f3ng, kho\u1ea3ng c\u00e1ch) c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng n\u1ebfu \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i \u0111\u00fang c\u00e1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, s\u1ef1 kh\u00e1c bi\u1ec7t trong th\u1ef1c t\u1ebf xu\u1ea5t hi\u1ec7n \u1edf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tri\u1ec3n khai quy m\u00f4 l\u1edbn (t\u00ednh nh\u1ea5t qu\u00e1n tr\u00ean h\u00e0ng ngh\u00ecn c\u1ed5ng)<\/p><\/li>\n\n\n\n<li><p>M\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 nh\u1ea1y v\u1edbi n\u00e2ng c\u1ea5p firmware<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Module OEM \u01b0u ti\u00ean t\u00ednh d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, trong khi module b\u00ean th\u1ee9 ba \u01b0u ti\u00ean hi\u1ec7u qu\u1ea3 chi ph\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u1ed7 tr\u1ee3 v\u00e0 b\u1ea3o tr\u00ec<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 H\u1ed7 tr\u1ee3 OEM<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u0111\u1ea7y \u0111\u1ee7 t\u1eeb nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>Quy tr\u00ecnh RMA v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 d\u1ec5 d\u00e0ng h\u01a1n<\/p><\/li>\n\n\n\n<li><p>T\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn \u0111\u1ed3ng b\u1ed9 t\u1ed1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 H\u1ed7 tr\u1ee3 b\u00ean th\u1ee9 ba<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>C\u00f3 th\u1ec3 y\u00eau c\u1ea7u vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111\u1ed9c l\u1eadp nhi\u1ec1u h\u01a1n<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c cam k\u1ebft t\u01b0\u01a1ng th\u00edch (t\u00f9y theo nh\u00e0 cung c\u1ea5p)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0 m\u1ea1ng th\u01b0\u1eddng \u0111\u00e1nh gi\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un n\u00e0y c\u00f3 v\u01b0\u1ee3t qua quy tr\u00ecnh x\u00e1c th\u1ef1c firmware c\u1ee7a nh\u00e0 cung c\u1ea5p hay kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i c\u1ee7a firmware c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o hay kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean nhi\u1ec1u th\u01b0\u01a1ng hi\u1ec7u switch kh\u00e1c nhau hay kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi l\u00e0 bao nhi\u00eau (kh\u00f4ng ch\u1ec9 gi\u00e1 mua)?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p, c\u00e1c chi\u1ebfn l\u01b0\u1ee3c lai (hybrid) kh\u00e1 ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ea3n ph\u1ea9m OEM cho c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng (backbone) quan tr\u1ecdng<\/p><\/li>\n\n\n\n<li><p>S\u1ea3n ph\u1ea9m b\u00ean th\u1ee9 ba cho c\u00e1c tri\u1ec3n khai \u1edf t\u1ea7ng truy c\u1eadp (access) ho\u1eb7c quy m\u00f4 l\u1edbn t\u1ea1i bi\u00ean m\u1ea1ng (edge)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eadn \u0111\u1ecbnh cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng t\u1ed3n t\u1ea1i l\u1ef1a ch\u1ecdn \u201ct\u1ed1t h\u01a1n\u201d chung chung gi\u1eefa m\u00f4-\u0111un SFP OEM v\u00e0 m\u00f4-\u0111un SFP b\u00ean th\u1ee9 ba. Quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>R\u00e0ng bu\u1ed9c v\u1ec1 ng\u00e2n s\u00e1ch<\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ea1n ch\u1ebf t\u1eeb h\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>M\u1ee9c \u0111\u1ed9 quan tr\u1ecdng c\u1ee7a m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p>Quy m\u00f4 tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Hi\u1ec7u n\u0103ng c\u00f4ng ngh\u1ec7 SFP kh\u00f4ng ch\u1ec9 n\u1eb1m \u1edf ph\u1ea7n c\u1ee9ng\u2014m\u00e0 c\u00f2n \u1edf kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, h\u00e0nh vi firmware v\u00e0 chi\u1ebfn l\u01b0\u1ee3c tri\u1ec3n khai.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 \u0111\u1ed9i ng\u0169 mua h\u00e0ng \u0111ang t\u00ecm ki\u1ebfm c\u00e1c gi\u1ea3i ph\u00e1p quang h\u1ecdc ti\u1ebft ki\u1ec7m chi ph\u00ed, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 v\u00e0 x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> cho m\u1ed9t lo\u1ea1t r\u1ed9ng c\u00e1c m\u00f4-\u0111un SFP t\u01b0\u01a1ng th\u00edch \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ea1ng doanh nghi\u1ec7p v\u00e0 m\u1ea1ng c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00f4ng ngh\u1ec7 SFP l\u00e0 g\u00ec, c\u00e1ch c\u00e1c module SFP ho\u1ea1t \u0111\u1ed9ng, c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch ch\u1ecdn b\u1ed9 thu ph\u00e1t ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>","protected":false},"author":1,"featured_media":2447,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-2448","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2448","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=2448"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2448\/revisions"}],"predecessor-version":[{"id":10700,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2448\/revisions\/10700"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2447"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}