{"id":2799,"date":"2026-03-30T00:00:00","date_gmt":"2026-03-30T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/qsfp-data-rate-explained-40g-100g-and-compatibility\/"},"modified":"2026-05-26T08:12:43","modified_gmt":"2026-05-26T08:12:43","slug":"qsfp-data-rate-explained-40g-100g-and-compatibility","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp-data-rate-explained-40g-100g-and-compatibility","title":{"rendered":"QSFP T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch: H\u01b0\u1edbng d\u1eabn t\u1ed1c \u0111\u1ed9 t\u1eeb 40G \u0111\u1ebfn 800G"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1.jpg\" alt=\"QSFP Data Rate Explained\" class=\"wp-image-2789\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c499fb237b464b90b37c8aa5e833f4d1-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP dao \u0111\u1ed9ng t\u1eeb 40G \u0111\u1ebfn 800G t\u00f9y thu\u1ed9c v\u00e0o th\u1ebf h\u1ec7 module.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491590.htm\"><strong>QSFP+<\/strong><\/a> h\u1ed7 tr\u1ee3 <strong>40Gbps (4 \u00d7 10G)<\/strong><\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491586.htm\"><strong>QSFP28<br><\/strong><\/a> h\u1ed7 tr\u1ee3 <strong>100Gbps (4 \u00d7 25G)<\/strong><\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\"><strong>QSFP56<\/strong><\/a> h\u1ed7 tr\u1ee3 <strong>200Gbps (4 \u00d7 50G, PAM4)<\/strong><\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\"><strong>QSFP-DD<\/strong><\/a> h\u1ed7 tr\u1ee3 <strong>400Gbps \u0111\u1ebfn 800Gbps (8 k\u00eanh, PAM4)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, QSFP kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t chu\u1ea9n t\u1ed1c \u0111\u1ed9 duy nh\u1ea5t\u2014m\u00e0 l\u00e0 m\u1ed9t d\u1ea1ng h\u00ecnh th\u1ee9c b\u1ed9 thu ph\u00e1t c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng vi\u1ec5n th\u00f4ng. B\u0103ng th\u00f4ng t\u1ed5ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi t\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh \u00d7 s\u1ed1 l\u01b0\u1ee3ng k\u00eanh, v\u00ec v\u1eady c\u00e1c th\u1ebf h\u1ec7 m\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491588.htm\">C\u00e1c module QSFP<\/a> \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 giao di\u1ec7n v\u1eadt l\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao vi\u1ec7c hi\u1ec3u r\u00f5 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP l\u1ea1i quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec7u n\u0103ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng c\u1ee7a m\u1ea1ng<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi switch v\u00e0 c\u1ed5ng<\/p><\/li><li><p>N\u00e2ng c\u1ea5p hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed (40G \u2192 100G \u2192 400G)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u hay n\u00e2ng c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ti\u1ebfn h\u00f3a s\u1ebd gi\u00fap b\u1ea1n tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch v\u00e0 t\u1ed1i \u01b0u h\u00f3a kho\u1ea3n \u0111\u1ea7u t\u01b0 d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3u r\u00f5 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ch\u00ednh x\u00e1c c\u1ee7a QSFP, QSFP+, QSFP28 v\u00e0 QSFP-DD<\/p><\/li><li><p>So s\u00e1nh ki\u1ebfn tr\u00fac 40G, 100G, 400G v\u00e0 800G<\/p><\/li><li><p>T\u00ecm hi\u1ec3u c\u00e1ch t\u1ed1c \u0111\u1ed9 k\u00eanh v\u00e0 k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng<\/p><\/li><li><p>X\u00e1c \u0111\u1ecbnh module QSFP ph\u00f9 h\u1ee3p nh\u1ea5t cho k\u1ecbch b\u1ea3n tri\u1ec3n khai c\u1ee7a b\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1edd h\u00e3y ph\u00e2n t\u00edch chi ti\u1ebft h\u1ecd QSFP v\u00e0 c\u00e1ch m\u1ed7i th\u1ebf h\u1ec7 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>QSFP l\u00e0 g\u00ec? M\u1ed9t h\u1ecd d\u1ea1ng h\u00ecnh th\u1ee9c t\u1ed1c \u0111\u1ed9 cao<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>QSFP (Quad Small Form-factor Pluggable)<\/strong> l\u00e0 d\u1ea1ng h\u00ecnh th\u1ee9c b\u1ed9 thu ph\u00e1t quang ho\u1eb7c \u0111\u1ed3ng c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng, d\u00f9ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao tr\u00ean c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng nh\u01b0 switch, router v\u00e0 m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1i ni\u1ec7m quan tr\u1ecdng nh\u1ea5t c\u1ea7n hi\u1ec3u: QSFP kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ed1c \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh\u2014m\u00e0 l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng ph\u1ea7n c\u1ee9ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau qua c\u00e1c th\u1ebf h\u1ec7.<\/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\/35c5a71cd30045e0babd8986d37a6199.jpg\" alt=\"What Is QSFP? A Family of High-Speed Form Factors\" class=\"wp-image-2790\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/35c5a71cd30045e0babd8986d37a6199.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/35c5a71cd30045e0babd8986d37a6199-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/35c5a71cd30045e0babd8986d37a6199-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/35c5a71cd30045e0babd8986d37a6199-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/35c5a71cd30045e0babd8986d37a6199-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >QSFP = D\u1ea1ng h\u00ecnh th\u1ee9c, Kh\u00f4ng ph\u1ea3i t\u1ed1c \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng gi\u1ea3 \u0111\u1ecbnh \u201cQSFP\u201d t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ed9t t\u1ed1c \u0111\u1ed9 c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5 40G), nh\u01b0ng \u0111i\u1ec1u n\u00e0y kh\u00f4ng ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00e0o \u0111\u00f3, QSFP x\u00e1c \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd v\u00e0 ti\u00eau chu\u1ea9n k\u1ebft n\u1ed1i<\/p><\/li><li><p>Giao di\u1ec7n \u0111i\u1ec7n \u0111a k\u00eanh (th\u01b0\u1eddng l\u00e0 4 ho\u1eb7c 8 k\u00eanh)<\/p><\/li><li><p>Thi\u1ebft k\u1ebf c\u1eafm r\u1eddi nh\u1eb1m n\u00e2ng c\u1ea5p linh ho\u1ea1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ebf h\u1ec7 module QSFP, ch\u1ee9 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u00ean g\u1ecdi \u201cQSFP\u201d t\u1ef1 th\u00e2n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch QSFP \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u kh\u00e1c nhau<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un QSFP m\u1edf r\u1ed9ng hi\u1ec7u n\u0103ng b\u1eb1ng m\u1ed9t c\u00f4ng th\u1ee9c \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>T\u1ed5ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u = T\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh \u00d7 S\u1ed1 l\u01b0\u1ee3ng k\u00eanh<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP+ \u2192 4 k\u00eanh \u00d7 10G = 40G<\/p><\/li><li><p>QSFP28 \u2192 4 k\u00eanh \u00d7 25G = 100G<\/p><\/li><li><p>QSFP56 \u2192 4 k\u00eanh \u00d7 50G = 200G<\/p><\/li><li><p>QSFP-DD \u2192 8 k\u00eanh \u00d7 50G \/ 100G = 400G \/ 800G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ebfn tr\u00fac m\u00f4-\u0111un d\u1ef1a tr\u00ean k\u00eanh n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 cho ph\u00e9p QSFP ph\u00e1t tri\u1ec3n t\u1eeb 40G l\u00ean 800G+ m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i ho\u00e0n to\u00e0n giao di\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c QSFP<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u1eadt \u0111\u1ed9 cao<\/strong><br\/>C\u1ed5ng QSFP cho ph\u00e9p nhi\u1ec1u k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao trong kh\u00f4ng gian nh\u1ecf g\u1ecdn, r\u1ea5t ph\u00f9 h\u1ee3p cho trung t\u00e2m d\u1eef li\u1ec7u.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/are-sfp-modules-hot-swappable-safe-sfp-hot-swap-guide\/\"><strong>Ph\u1ea7n C\u1ee9ng C\u00f3 Th\u1ec3 Thay Th\u1ebf Khi \u0110ang Ho\u1ea1t \u0110\u1ed9ng (Hot-Swappable)<\/strong><\/a><strong> Thi\u1ebft k\u1ebf<\/strong><br\/>C\u00e1c m\u00f4-\u0111un c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o ho\u1eb7c th\u00e1o ra m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n h\u1ec7 th\u1ed1ng.<\/p><\/li><li><p><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c (m\u1ed9t ph\u1ea7n)<\/strong><br\/>M\u1ed9t s\u1ed1 th\u1ebf h\u1ec7 QSFP c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c m\u00f4-\u0111un t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p><\/li><li><p><strong>Tri\u1ec3n khai linh ho\u1ea1t<\/strong><br\/>H\u1ed7 tr\u1ee3 c\u00e1p s\u1ee3i quang v\u00e0 c\u00e1p DAC (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/direct-attach-cables-dac-in-networking\/\">\u0110\u1ed3ng tr\u1ef1c ti\u1ebfp g\u1eafn<\/a>).<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00fd do QSFP tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n ng\u00e0nh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i v\u00ec mang l\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u0103ng th\u00f4ng m\u1edf r\u1ed9ng (t\u1eeb 40G \u0111\u1ebfn 800G)<\/p><\/li><li><p>Hi\u1ec7u qu\u1ea3 chi ph\u00ed tr\u00ean m\u1ed7i bit<\/p><\/li><li><p>T\u00ednh linh ho\u1ea1t cho vi\u1ec7c n\u00e2ng c\u1ea5p m\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do QSFP chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c l\u0129nh v\u1ef1c hi\u1ec7n \u0111\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li><li><p>\u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\">HPC<\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP l\u00e0 m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\">b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi<\/a> d\u1ea1ng h\u00ecnh th\u1ee9c h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t t\u1ed1c \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh duy nh\u1ea5t<strong>.<\/strong> Hi\u1ec7u n\u0103ng c\u1ee7a n\u00f3 t\u0103ng l\u00ean b\u1eb1ng c\u00e1ch n\u00e2ng cao t\u1ed1c \u0111\u1ed9 k\u00eanh v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u00eanh qua c\u00e1c th\u1ebf h\u1ec7 nh\u01b0 QSFP+, QSFP28 v\u00e0 QSFP-DD.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u th\u1ebf h\u1ec7 \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i: QSFP+ v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u 40G c\u1ee7a n\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u c\u1ee7a QSFP+ l\u00e0 bao nhi\u00eau?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u 40 Gbps (Ethernet 40G). QSFP+ \u0111\u1ea1t 40 Gbps b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng 4 k\u00eanh, m\u1ed7i k\u00eanh 10 Gbps, do \u0111\u00f3 tr\u1edf th\u00e0nh b\u1ed9 thu ph\u00e1t ti\u00eau chu\u1ea9n cho c\u00e1c m\u1ea1ng Ethernet 40G.<br\/>N\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y nh\u1edd ki\u1ebfn tr\u00fac 4 k\u00eanh, trong \u0111\u00f3 m\u1ed7i k\u00eanh v\u1eadn h\u00e0nh \u1edf kho\u1ea3ng 10 Gbps (4 \u00d7 10G). <\/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\/0398208a5d984d2f9b91343cc4f6c730.jpg\" alt=\"What Is the Data Rate of QSFP+ ?\" class=\"wp-image-2791\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0398208a5d984d2f9b91343cc4f6c730.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0398208a5d984d2f9b91343cc4f6c730-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0398208a5d984d2f9b91343cc4f6c730-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0398208a5d984d2f9b91343cc4f6c730-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0398208a5d984d2f9b91343cc4f6c730-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac k\u00eanh QSFP+<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ s\u1eed d\u1ee5ng \u0111i\u1ec1u ch\u1ebf NRZ (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-non-return-to-zero-in-digital-communication\/\">Kh\u00f4ng quay v\u1ec1 m\u1ee9c kh\u00f4ng<\/a>), truy\u1ec1n 1 bit tr\u00ean m\u1ed7i chu k\u1ef3 t\u00edn hi\u1ec7u. C\u1ea5u tr\u00fac nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed5ng s\u1ed1 k\u00eanh:<\/strong> 4<\/p><\/li><li><p><strong>T\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh:<\/strong> ~10,3125 Gbps<\/p><\/li><li><p><strong>B\u0103ng th\u00f4ng t\u1ed5ng h\u1ee3p:<\/strong> ~40\u201341,25 Gbps<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean k\u00eanh n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 x\u00e1c \u0111\u1ecbnh QSFP+ nh\u01b0 gi\u1ea3i ph\u00e1p ti\u00eau chu\u1ea9n cho m\u1ea1ng 40G.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a QSFP+<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ \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 l\u1edbp t\u1eadp trung trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>\u0110\u1ea7u t\u1ee7 (<span class=\"math\">ToR<\/span>)<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-tor-top-of-rack-switch\/\">ToR<\/a>\u0111\u1ebfn cu\u1ed1i d\u00e3y (<span class=\"math\">EoR<\/span>)<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/end-of-row-eor-switches-architecture-benefits-and-deployment\/\">EoR<\/a>k\u1ebft n\u1ed1i<\/p><\/li><li><p>K\u1ebft n\u1ed1i li\u00ean k\u1ebft gi\u1eefa c\u00e1c switch<\/p><\/li><li><p>N\u00e2ng c\u1ea5p x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p t\u1eeb 10G l\u00ean 40G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn v\u00ec cung c\u1ea5p b\u0103ng th\u00f4ng g\u1ea5p 4 l\u1ea7n <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a> (10G) trong khi v\u1eabn duy tr\u00ec chi ph\u00ed v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c lo\u1ea1i m\u00f4-\u0111un QSFP+ ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 b\u1ed9 thu ph\u00e1t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP+ \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i<\/a> include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>40GBASE-SR4<\/strong><\/a><\/p><ul><li><p>S\u1ee3i quang \u0111a mode (MMF)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh: t\u1ed1i \u0111a 100\u2013150 m<\/p><\/li><\/ul><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482604.htm\"><strong>40GBASE-LR4<\/strong><\/a><\/p><ul><li><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh: t\u1ed1i \u0111a 10 km<\/p><\/li><\/ul><\/li><li><p><strong>40GBASE-CR4 (DAC)<\/strong><\/p><ul><li><p>\u0110\u1ed3ng tr\u1ef1c ti\u1ebfp g\u1eafn<\/p><\/li><li><p>K\u1ebft n\u1ed1i t\u1ea7m ng\u1eafn, hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u1ea3 n\u0103ng chia t\u00e1ch QSFP+ (quan tr\u1ecdng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng l\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a QSFP+ l\u00e0 kh\u1ea3 n\u0103ng chia t\u00e1ch th\u00e0nh nhi\u1ec1u li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>1 \u00d7 40G \u2192 4 \u00d7 10G (SFP+)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u0103ng t\u00ednh linh ho\u1ea1t c\u1ed5ng<\/p><\/li><li><p>K\u1ebft n\u1ed1i nhi\u1ec1u m\u00e1y ch\u1ee7 10G v\u00e0o m\u1ed9t c\u1ed5ng switch 40G<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng m\u00f4-\u0111un QSFP+?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng 40G k\u1ebf th\u1eeba<\/p><\/li><li><p>C\u00e1c tri\u1ec3n khai nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li><li><p>Li\u00ean k\u1ebft t\u1ea7m ng\u1eafn \u0111\u1ebfn trung b\u00ecnh trong c\u00e1c m\u1ea1ng hi\u1ec7n c\u00f3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, trong c\u00e1c tri\u1ec3n khai m\u1edbi, nhi\u1ec1u m\u1ea1ng \u0111ang chuy\u1ec3n sang d\u00f9ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488422.htm\">QSFP28 100G<\/a> \u0111\u1ec3 m\u1edf r\u1ed9ng quy m\u00f4 t\u1ed1t h\u01a1n<\/p><\/li><li><p>Hi\u1ec7u su\u1ea5t cao h\u01a1n tr\u00ean m\u1ed7i bit<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y xem c\u00e1ch QSFP28 t\u0103ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u l\u00ean 100G v\u00e0 l\u00fd do n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh chu\u1ea9n th\u1ed1ng tr\u1ecb trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u c\u1ee7a QSFP28 l\u00e0 bao nhi\u00eau?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u 100 Gbps (Ethernet 100G).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 h\u1ed7 tr\u1ee3 100 Gbps b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng 4 k\u00eanh, m\u1ed7i k\u00eanh 25 Gbps, do \u0111\u00f3 tr\u1edf th\u00e0nh b\u1ed9 thu ph\u00e1t ti\u00eau chu\u1ea9n cho c\u00e1c m\u1ea1ng Ethernet 100G. N\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y nh\u1edd ki\u1ebfn tr\u00fac 4 k\u00eanh, trong \u0111\u00f3 m\u1ed7i k\u00eanh v\u1eadn h\u00e0nh \u1edf kho\u1ea3ng 25 Gbps (4 \u00d7 25G).<\/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\/755f20a05f9a41c58cdd5e778578715d.jpg\" alt=\"What Is the Data Rate of QSFP28 ?\" class=\"wp-image-2792\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/755f20a05f9a41c58cdd5e778578715d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/755f20a05f9a41c58cdd5e778578715d-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/755f20a05f9a41c58cdd5e778578715d-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/755f20a05f9a41c58cdd5e778578715d-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/755f20a05f9a41c58cdd5e778578715d-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac k\u00eanh QSFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 k\u1ebf th\u1eeba c\u00f9ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd v\u1edbi QSFP+, nh\u01b0ng t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 tr\u00ean m\u1ed7i k\u00eanh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed5ng s\u1ed1 k\u00eanh:<\/strong> 4<\/p><\/li><li><p><strong>T\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh:<\/strong> ~25,78125 Gbps<\/p><\/li><li><p><strong>B\u0103ng th\u00f4ng t\u1ed5ng h\u1ee3p:<\/strong> ~100\u2013103 Gbps<\/p><\/li><li><p><strong>\u0110i\u1ec1u ch\u1ebf:<\/strong> NRZ (trong h\u1ea7u h\u1ebft c\u00e1c chu\u1ea9n 100GBASE)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd v\u1eady, QSFP28 cung c\u1ea5p b\u0103ng th\u00f4ng cao g\u1ea5p 2,5 l\u1ea7n QSFP+ m\u00e0 kh\u00f4ng c\u1ea7n t\u0103ng s\u1ed1 k\u00eanh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao QSFP28 tr\u1edf th\u00e0nh chu\u1ea9n cho 100G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i v\u00ec \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t nh\u1ea5t gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u0103ng th\u00f4ng cao (100G)<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng (c\u00f9ng k\u00edch th\u01b0\u1edbc v\u1edbi QSFP+)<\/p><\/li><li><p>Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng tr\u00ean m\u1ed7i bit<\/p><\/li><li><p>M\u1edf r\u1ed9ng quy m\u00f4 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed t\u1eeb 40G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn QSFP28 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn th\u1ed1ng tr\u1ecb cho c\u00e1c m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c ki\u1ebfn tr\u00fac spine-leaf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a m\u00f4-\u0111un QSFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c l\u1edbp spine v\u00e0 l\u00f5i c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>C\u00e1c k\u1ebft n\u1ed1i gi\u1eefa leaf v\u00e0 spine<\/p><\/li><li><p>High-performance computing (HPC)<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 quy m\u00f4 si\u00eau l\u1edbn (hyperscale)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p m\u1eb7c \u0111\u1ecbnh cho c\u00e1c m\u1ea1ng chuy\u1ec3n t\u1eeb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ebfn tr\u00fac 10G \u2192 25G \u2192 100G<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c lo\u1ea1i m\u00f4-\u0111un QSFP28 ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 lo\u1ea1i \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i nh\u1ea5t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482496.htm\">b\u1ed9 thu ph\u00e1t QSFP28<\/a> include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473115.htm\"><strong>100GBASE-SR4<\/strong><\/a><\/p><ul><li><p>S\u1ee3i quang \u0111a mode (MMF)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh: l\u00ean \u0111\u1ebfn 70\u2013100 m<\/p><\/li><\/ul><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\"><strong>100GBASE-LR4<\/strong><\/a><\/p><ul><li><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh: t\u1ed1i \u0111a 10 km<\/p><\/li><\/ul><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\"><strong>100GBASE-CWDM4<\/strong><\/a><\/p><ul><li><p>S\u1ee3i quang \u0111\u01a1n mode (SMF), t\u1ed1i \u01b0u chi ph\u00ed<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh: l\u00ean \u0111\u1ebfn 2 km<\/p><\/li><\/ul><\/li><li><p><strong>100GBASE-CR4 (DAC)<\/strong><\/p><ul><li><p>C\u00e1p \u0111\u1ed3ng<\/p><\/li><li><p>K\u1ebft n\u1ed1i t\u1ea7m ng\u1eafn, chi ph\u00ed th\u1ea5p<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u1ea3 n\u0103ng chia nh\u00e1nh (breakout) v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a QSFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng l\u1ee3i th\u1ebf l\u1edbn nh\u1ea5t c\u1ee7a QSFP28 l\u00e0 kh\u1ea3 n\u0103ng chia nh\u00e1nh linh ho\u1ea1t<strong>y<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1 \u00d7 100G \u2192 4 \u00d7 25G (SFP28)<\/p><\/li><li><p>1 \u00d7 100G \u2192 2 \u00d7 50G (\u00edt ph\u1ed5 bi\u1ebfn h\u01a1n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y cho ph\u00e9p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7 hi\u1ec7u qu\u1ea3<\/p><\/li><li><p>Di chuy\u1ec3n d\u1ea7n t\u1eeb 25G l\u00ean 100G<\/p><\/li><li><p>T\u1eadn d\u1ee5ng c\u1ed5ng t\u1ed1t h\u01a1n tr\u00ean c\u00e1c switch m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao QSFP28 l\u00e0 l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 \u0111\u01b0\u1ee3c coi l\u00e0 n\u00e2ng c\u1ea5p t\u1ef1 nhi\u00ean t\u1eeb QSFP+ (40G) v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u00f3 s\u1eed d\u1ee5ng c\u00f9ng k\u00edch th\u01b0\u1edbc c\u1ed5ng v\u1eadt l\u00fd<\/p><\/li><li><p>N\u00f3 cung c\u1ea5p b\u0103ng th\u00f4ng cao h\u01a1n 2,5 l\u1ea7n<\/p><\/li><li><p>N\u00f3 ph\u00f9 h\u1ee3p v\u1edbi m\u00e1y ch\u1ee7 25G hi\u1ec7n \u0111\u1ea1i <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">NIC<\/a> h\u1ec7 sinh th\u00e1i<\/p><\/li><li><p>N\u00f3 mang l\u1ea1i chi ph\u00ed th\u1ea5p h\u01a1n m\u1ed7i Gbps theo th\u1eddi gian<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng, 100G l\u00e0 \u0111i\u1ec3m c\u00e2n b\u1eb1ng l\u00fd t\u01b0\u1edfng gi\u1eefa hi\u1ec7u n\u0103ng, chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd so s\u00e1nh tr\u1ef1c ti\u1ebfp QSFP, QSFP+ v\u00e0 QSFP28 \u0111\u1ec3 hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, c\u1ea5u tr\u00fac k\u00eanh (lane) v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>So s\u00e1nh QSFP vs. QSFP+ vs. QSFP28: T\u1ed1c \u0111\u1ed9, K\u00eanh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP, QSFP+ v\u00e0 QSFP28 kh\u00e1c nhau ch\u1ee7 y\u1ebfu \u1edf t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u v\u00e0 t\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh: QSFP h\u1ed7 tr\u1ee3 4G (1G m\u1ed7i k\u00eanh), QSFP+ h\u1ed7 tr\u1ee3 40G (4 \u00d7 10G), v\u00e0 QSFP28 h\u1ed7 tr\u1ee3 100G (4 \u00d7 25G).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi so s\u00e1nh c\u00e1c th\u1ebf h\u1ec7 QSFP, nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, t\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n tri\u1ec3n khai \u0111i\u1ec3n h\u00ecnh. M\u1eb7c d\u00f9 c\u1ea3 ba \u0111\u1ec1u c\u00f3 c\u00f9ng d\u1ea1ng h\u00ecnh h\u1ecdc v\u1eadt l\u00fd, kh\u1ea3 n\u0103ng hi\u1ec7u n\u0103ng c\u1ee7a ch\u00fang kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3.<\/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\/30a43cc56aad41dba0e1e6ccd181ae8f.jpg\" alt=\"QSFP+ vs. QSFP28: Speed, Lanes, and Use Cases\" class=\"wp-image-2793\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/30a43cc56aad41dba0e1e6ccd181ae8f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/30a43cc56aad41dba0e1e6ccd181ae8f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/30a43cc56aad41dba0e1e6ccd181ae8f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/30a43cc56aad41dba0e1e6ccd181ae8f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/30a43cc56aad41dba0e1e6ccd181ae8f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea3ng so s\u00e1nh QSFP vs. QSFP+ vs. QSFP28<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i QSFP<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ti\u00eau chu\u1ea9n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed5ng s\u1ed1 k\u00eanh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec1u ch\u1ebf<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP (l\u1ed7i th\u1eddi)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vi\u1ec5n th\u00f4ng s\u01a1 k\u1ef3 \/ h\u1ec7 th\u1ed1ng l\u1ed7i th\u1eddi<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP+<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u c\u00e1p s\u1ee3i quang v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n, nh\u01b0ng m\u1edf r\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n cho s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1ng trong t\u01b0\u01a1ng lai.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1eadp h\u1ee3p trung t\u00e2m d\u1eef li\u1ec7u, \u0111\u01b0\u1eddng truy\u1ec1n n\u1ec1n 40G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, m\u1ea1ng spine-leaf<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c kh\u00e1c bi\u1ec7t ch\u00ednh \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >S\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP \u2192 QSFP+ \u2192 QSFP28 th\u1ec3 hi\u1ec7n m\u1ed9t l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p r\u00f5 r\u00e0ng:<\/p><ul><li><p>4G \u2192 40G \u2192 100G<\/p><\/li><\/ul><\/li><li><p>M\u1ed7i th\u1ebf h\u1ec7 t\u0103ng \u0111\u00e1ng k\u1ec3 b\u0103ng th\u00f4ng m\u00e0 kh\u00f4ng thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ed5ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c nh\u00e0 khai th\u00e1c m\u1ea1ng m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i b\u1ed1 tr\u00ed ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 m\u1ed7i k\u00eanh (lane)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u1ebfu t\u1ed1 ch\u00ednh th\u00fac \u0111\u1ea9y t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n l\u00e0 t\u00edn hi\u1ec7u nhanh h\u01a1n tr\u00ean m\u1ed7i k\u00eanh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP: <strong>1G tr\u00ean m\u1ed7i k\u00eanh<\/strong><\/p><\/li><li><p>QSFP+: <strong>10G tr\u00ean m\u1ed7i k\u00eanh<\/strong><\/p><\/li><li><p>QSFP28: <strong>25G tr\u00ean m\u1ed7i k\u00eanh<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec th\u00eam nhi\u1ec1u k\u00eanh h\u01a1n, c\u00e1c th\u1ebf h\u1ec7 m\u1edbi t\u0103ng hi\u1ec7u su\u1ea5t tr\u00ean m\u1ed7i k\u00eanh, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u1ec1 \u0111i\u1ec7n n\u0103ng v\u00e0 chi ph\u00ed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >C\u00f4ng ngh\u1ec7 \u0111i\u1ec1u ch\u1ebf<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 ba th\u1ebf h\u1ec7 \u0111\u1ec1u s\u1eed d\u1ee5ng \u0111i\u1ec1u ch\u1ebf NRZ (Non-Return-to-Zero).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>NRZ = 1 bit tr\u00ean m\u1ed7i chu k\u1ef3 t\u00edn hi\u1ec7u<\/p><\/li><li><p>\u0110\u00e1ng tin c\u1eady v\u00e0 \u0111\u01a1n gi\u1ea3n, nh\u01b0ng b\u1ecb gi\u1edbi h\u1ea1n trong vi\u1ec7c m\u1edf r\u1ed9ng v\u01b0\u1ee3t qu\u00e1 25G tr\u00ean m\u1ed7i k\u00eanh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do c\u00e1c chu\u1ea9n m\u1edbi h\u01a1n (nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp56-optical-transceiver-overview-for-data-centers\/\">QSFP56<\/a>) chuy\u1ec3n sang <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\/\">PAM4<\/a> \u0111\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 cao h\u01a1n.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >C\u00e1c t\u00ecnh hu\u1ed1ng tri\u1ec3n khai<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP (l\u1ed7i th\u1eddi)<\/strong><br\/>Ng\u00e0y nay r\u1ea5t hi\u1ebfm, ch\u1ee7 y\u1ebfu xu\u1ea5t hi\u1ec7n trong thi\u1ebft b\u1ecb vi\u1ec5n th\u00f4ng c\u0169<\/p><\/li><li><p><strong>QSFP+ (40G)<\/strong><\/p><ul><li><p>T\u00edch h\u1ee3p doanh nghi\u1ec7p<\/p><\/li><li><p>N\u00e2ng c\u1ea5p trung t\u00e2m d\u1eef li\u1ec7u c\u0169<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li><\/ul><\/li><li><p><strong>QSFP28 (100G)<\/strong><\/p><ul><li><p>Ki\u1ebfn tr\u00fac spine-leaf<\/p><\/li><li><p>Trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 si\u00eau l\u1edbn<\/p><\/li><li><p>\u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c tri\u1ec3n khai m\u1edbi, trong khi QSFP+ \u0111ang d\u1ea7n b\u1ecb lo\u1ea1i b\u1ecf.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP<\/strong> \u2192 Chu\u1ea9n \u0111\u1ea7u ti\u00ean, t\u1ed1c \u0111\u1ed9 th\u1ea5p (4G)<\/p><\/li><li><p><strong>QSFP+<\/strong> \u2192 40G, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ea1ng c\u0169 v\u00e0 m\u1ea1ng t\u1ea7m trung<\/p><\/li><li><p><strong>QSFP28<br><\/strong> \u2192 100G, chu\u1ea9n ph\u1ed5 bi\u1ebfn hi\u1ec7n t\u1ea1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin th\u1ef1c ti\u1ec5n d\u00e0nh cho ng\u01b0\u1eddi mua<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c lo\u1ea1i n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ecdn QSFP+ (40G) ch\u1ec9 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ec7 th\u1ed1ng c\u0169<\/p><\/li><li><p>Ch\u1ecdn QSFP28 (100G) cho h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i<\/p><\/li><li><p>Tr\u00e1nh d\u00f9ng QSFP (c\u0169) tr\u1eeb khi b\u1eaft bu\u1ed9c ph\u1ea3i h\u1ed7 tr\u1ee3 c\u00e1c h\u1ec7 th\u1ed1ng c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u00e0i h\u1ea1n v\u00e0 l\u1ee3i t\u1ee9c \u0111\u1ea7u t\u01b0 (ROI) t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u c\u00e1ch ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p nh\u1ea5t cho m\u00f4i tr\u01b0\u1eddng m\u1ea1ng c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>C\u00e1ch ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ecdn t\u00f9y ch\u1ecdn nhanh nh\u1ea5t\u2014m\u00e0 c\u00f2n l\u00e0 vi\u1ec7c kh\u1edbp b\u0103ng th\u00f4ng v\u1edbi l\u1edbp m\u1ea1ng, m\u00f4 h\u00ecnh l\u01b0u l\u01b0\u1ee3ng v\u00e0 chi\u1ebfn l\u01b0\u1ee3c n\u00e2ng c\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn t\u1ed1i \u01b0u l\u00e0 \u00e1nh x\u1ea1 c\u00e1c t\u1ed1c \u0111\u1ed9 QSFP v\u00e0o c\u00e1c t\u00ecnh hu\u1ed1ng tri\u1ec3n khai th\u1ef1c t\u1ebf: truy c\u1eadp, t\u00edch h\u1ee3p v\u00e0 l\u00f5i.<\/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\/e861cf5e60284b3292bf016597c0a527.jpg\" alt=\"How to Choose the Right QSFP Data Rate for Your Network\" class=\"wp-image-2795\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e861cf5e60284b3292bf016597c0a527.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e861cf5e60284b3292bf016597c0a527-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e861cf5e60284b3292bf016597c0a527-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e861cf5e60284b3292bf016597c0a527-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e861cf5e60284b3292bf016597c0a527-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1ea3ng so s\u00e1nh t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP d\u1ef1a tr\u00ean l\u1edbp m\u1ea1ng c\u1ee7a b\u1ea1n: 40G cho truy c\u1eadp k\u1ebf th\u1eeba, 100G cho l\u1edbp t\u1ed5ng h\u1ee3p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, v\u00e0 400G+ cho m\u1ea1ng l\u00f5i v\u00e0 m\u1ea1ng quy m\u00f4 l\u1edbn.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i QSFP<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 Ethernet ti\u00eau chu\u1ea9n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 k\u00eanh \u0111i\u1ec7n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec1u ch\u1ebf<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed5ng s\u1ed1 k\u00eanh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP (l\u1ed7i th\u1eddi)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1G tr\u00ean m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng s\u01a1 khai<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP+<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40G (40GbE)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10G tr\u00ean m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ea7ng t\u1ed5ng h\u1ee3p trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G (100GbE)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25G tr\u00ean m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ea1ng l\u00f5i &amp; m\u1ea1ng spine<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP28 (chia nh\u00e1nh)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 25G \/ 2 \u00d7 50G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25G tr\u00ean m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP56<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>200G (200GbE)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>50G m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 cao<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP112<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>400G (400GbE)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ea1ng quy m\u00f4 l\u1edbn \/ \u0111\u00e1m m\u00e2y<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP-DD<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>200G \/ 400G \/ 800G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>50G \/ 100G m\u1ed7i k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c c\u1ea5u tr\u00fac chuy\u1ec3n m\u1ea1ch th\u1ebf h\u1ec7 ti\u1ebfp theo<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1edbp truy c\u1eadp: M\u00e1y ch\u1ee7 10G \/ 25G \u2192 Li\u00ean k\u1ebft l\u00ean 40G ho\u1eb7c 100G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede l\u1edbp truy c\u1eadp (c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch Top-of-Rack), tr\u1ecdng t\u00e2m l\u00e0 k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7 v\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c t\u00f9y ch\u1ecdn QSFP \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491589.htm\"><strong>QSFP+ 40G<\/strong><\/a> \u2192 m\u00f4i tr\u01b0\u1eddng k\u1ebf th\u1eeba v\u1edbi m\u00e1y ch\u1ee7 10G<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473118.htm\"><strong>100G QSFP28 <\/strong><\/a> \u2192 tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i v\u1edbi m\u00e1y ch\u1ee7 25G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>40G h\u1ed7 tr\u1ee3 chia nh\u00e1nh 4 \u00d7 10G<\/p><\/li><li><p>100G h\u1ed7 tr\u1ee3 chia nh\u00e1nh 4 \u00d7 25G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>NIC 10G \u2192 ch\u1ecdn 40G (QSFP+)<\/p><\/li><li><p>NIC 25G \u2192 ch\u1ecdn 100G (QSFP28)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1edbp t\u1ed5ng h\u1ee3p: C\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 b\u0103ng th\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede l\u1edbp t\u1ed5ng h\u1ee3p (l\u1edbp leaf ho\u1eb7c ph\u00e2n ph\u1ed1i), l\u01b0u l\u01b0\u1ee3ng t\u1eeb nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch truy c\u1eadp \u0111\u01b0\u1ee3c g\u1ed9p l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c t\u00f9y ch\u1ecdn QSFP \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP28 (100G)<\/strong> \u2192 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/p><\/li><li><p><strong>QSFP56 (200G)<\/strong> \u2192 \u0111ang gia t\u0103ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cung c\u1ea5p kh\u1ea3 n\u0103ng li\u00ean k\u1ebft l\u00ean cao h\u01a1n<\/p><\/li><li><p>Gi\u1ea3m t\u1ef7 l\u1ec7 qu\u00e1 t\u1ea3i (oversubscription)<\/p><\/li><li><p>C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t l\u01b0u l\u01b0\u1ee3ng east-west<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">100G hi\u1ec7n l\u00e0 \u0111i\u1ec3m c\u00e2n b\u1eb1ng l\u00fd t\u01b0\u1edfng cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed tr\u00ean m\u1ed7i Gbps<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1edbp l\u00f5i \/ spine: Th\u00f4ng l\u01b0\u1ee3ng cao v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede l\u1edbp l\u00f5i (l\u1edbp spine), \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u l\u00e0 th\u00f4ng l\u01b0\u1ee3ng t\u1ed1i \u0111a v\u00e0 kh\u1ea3 n\u0103ng n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c t\u00f9y ch\u1ecdn QSFP \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP28 (100G)<\/strong> \u2192 spine c\u1ea5p nh\u1eadp m\u00f4n<\/p><\/li><li><p><strong>QSFP56 (200G)<\/strong> \u2192 m\u1edf r\u1ed9ng \u1edf m\u1ee9c trung b\u00ecnh<\/p><\/li><li><p><strong>QSFP-DD (400G \/ 800G)<\/strong> \u2192 m\u1ea1ng quy m\u00f4 l\u1edbn v\u00e0 m\u1ea1ng th\u1ebf h\u1ec7 ti\u1ebfp theo<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft l\u00f5i v\u1eadn chuy\u1ec3n l\u01b0u l\u01b0\u1ee3ng \u0111\u00e3 \u0111\u01b0\u1ee3c g\u1ed9p t\u1eeb to\u00e0n b\u1ed9 m\u1ea1ng<\/p><\/li><li><p>T\u1ed1c \u0111\u1ed9 cao h\u01a1n l\u00e0m gi\u1ea3m c\u00e1c \u0111i\u1ec3m ngh\u1ebdn \u0111\u1ed9 tr\u1ec5<\/p><\/li><li><p>Vi\u1ec7c n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n nh\u1edd c\u00e1c c\u1ed5ng c\u00f3 dung l\u01b0\u1ee3ng cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">400G \u0111ang tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n trong c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">800G \u0111ang n\u1ed5i l\u00ean cho <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/artificial-intelligence-what-it-is-and-how-it-works-explained\/\">AI<\/a> v\u00e0 c\u00e1c kh\u1ed1i c\u00f4ng vi\u1ec7c hi\u1ec7u n\u0103ng cao<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Xem x\u00e9t kho\u1ea3ng c\u00e1ch v\u00e0 ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP c\u1ee7a b\u1ea1n c\u0169ng ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 lo\u1ea1i c\u00e1p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ph\u1ea1m vi ng\u1eafn (\u2264100m):<\/strong><\/p><ul><li><p>DAC (\u0110\u1ed3ng n\u1ed1i tr\u1ef1c ti\u1ebfp)<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473116.htm\">quang h\u1ecdc SR<\/a> (MMF)<br><\/p><\/li><\/ul><\/li><li><p><strong>Ph\u1ea1m vi trung b\u00ecnh (\u22642km):<\/strong><\/p><ul><li><p>CWDM4 \/ PSM4<\/p><\/li><\/ul><\/li><li><p><strong>Ph\u1ea1m vi xa (10km+):<\/strong><\/p><ul><li><p>LR4 \/ <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472709.htm\">Quang h\u1ecdc ER<\/a> (SMF)<br><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 cao h\u01a1n (200G\/400G) th\u01b0\u1eddng y\u00eau c\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ea5t l\u01b0\u1ee3ng s\u1ee3i quang t\u1ed1t h\u01a1n<\/p><\/li><li><p>Quang h\u1ecdc ti\u00ean ti\u1ebfn h\u01a1n (PAM4)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Chi ph\u00ed so v\u1edbi s\u1ef1 b\u1ea3o v\u1ec7 cho t\u01b0\u01a1ng lai (Future-Proofing)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP, lu\u00f4n c\u1ea7n c\u00e2n b\u1eb1ng gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 ng\u00e2n s\u00e1ch hi\u1ec7n t\u1ea1i<\/p><\/li><li><p>S\u1ef1 gia t\u0103ng b\u0103ng th\u00f4ng trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi\u1ebfn l\u01b0\u1ee3c chung:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tri\u1ec3n khai ng\u1eafn h\u1ea1n \u2192 ch\u1ecdn 40G \/ 100G<\/p><\/li><li><p>\u0110\u1ea7u t\u01b0 d\u00e0i h\u1ea1n \u2192 c\u00e2n nh\u1eafc 100G \/ 400G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ecf qua c\u00e1c n\u00e2ng c\u1ea5p trung gian (v\u00ed d\u1ee5: chuy\u1ec3n tr\u1ef1c ti\u1ebfp l\u00ean 100G thay v\u00ec qua 40G) th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO) th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u01b0\u1edbng d\u1eabn ra quy\u1ebft \u0111\u1ecbnh nhanh<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng nh\u1ecf \/ m\u1ea1ng k\u1ebf th\u1eeba: \u2192 QSFP+ (40G)<\/p><\/li><li><p>H\u1ea7u h\u1ebft c\u00e1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<br><\/a>: \u2192 QSFP28 (100G)<\/p><\/li><li><p>M\u1ea1ng m\u1eadt \u0111\u1ed9 cao \/ AI \/ quy m\u00f4 si\u00eau l\u1edbn (hyperscale): \u2192 QSFP-DD (400G\/800G)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t t\u1ed1c \u0111\u1ed9 QSFP \u201cph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi tr\u01b0\u1eddng h\u1ee3p\u201d.<br\/>L\u1ef1a ch\u1ecdn \u0111\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n<\/p><\/li><li><p>D\u1ef1 b\u00e1o t\u0103ng tr\u01b0\u1edfng l\u01b0u l\u01b0\u1ee3ng<\/p><\/li><li><p>L\u1ecbch tr\u00ecnh n\u00e2ng c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, 100G (QSFP28) l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u t\u1ed1i \u01b0u, v\u1edbi l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p r\u00f5 r\u00e0ng l\u00ean 400G v\u00e0 cao h\u01a1n n\u1eefa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y xem x\u00e9t m\u1ed9t y\u1ebfu t\u1ed1 then ch\u1ed1t m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi mua th\u01b0\u1eddng b\u1ecf qua: kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch QSFP, ch\u1ebf \u0111\u1ed9 t\u00e1ch k\u00eanh (breakout), v\u00e0 kh\u1edbp c\u1ed5ng<strong>.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0 <\/strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch QSFP, ch\u1ebf \u0111\u1ed9 t\u00e1ch k\u00eanh (breakout) v\u00e0 kh\u1edbp c\u1ed5ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1ef1c ti\u1ec5n quan tr\u1ecdng nh\u1ea5t khi l\u00e0m vi\u1ec7c v\u1edbi module QSFP l\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch (switch), thi\u1ebft b\u1ecb quang h\u1ecdc (optics) v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p. Nhi\u1ec1u s\u1ef1 c\u1ed1 tri\u1ec3n khai th\u1ef1c t\u1ebf b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c kh\u00f4ng kh\u1edbp t\u1ed1c \u0111\u1ed9 c\u1ed5ng, lo\u1ea1i b\u1ed9 thu ph\u00e1t (transceiver) ho\u1eb7c c\u1ea5u h\u00ecnh t\u00e1ch k\u00eanh \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i do b\u0103ng th\u00f4ng.<\/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\/f1b0e4ee902d434d96d89bdbe8588bc9.jpg\" alt=\"QSFP Compatibility, Breakout Modes, and Port Matching\" class=\"wp-image-2796\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1b0e4ee902d434d96d89bdbe8588bc9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1b0e4ee902d434d96d89bdbe8588bc9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1b0e4ee902d434d96d89bdbe8588bc9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1b0e4ee902d434d96d89bdbe8588bc9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1b0e4ee902d434d96d89bdbe8588bc9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch QSFP: Nh\u1eefng \u0111i\u1ec1u b\u1ea1n c\u1ea7n bi\u1ebft tr\u01b0\u1edbc ti\u00ean<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch QSFP ph\u1ee5 thu\u1ed9c v\u00e0o ba y\u1ebfu t\u1ed1 ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u1ea3 n\u0103ng c\u1ee7a c\u1ed5ng switch (h\u1ed7 tr\u1ee3 ph\u1ea7n c\u1ee9ng)<\/p><\/li><li><p>Th\u1ebf h\u1ec7 b\u1ed9 thu ph\u00e1t (QSFP+, QSFP28, QSFP56, v.v.)<\/p><\/li><li><p>T\u00ednh tu\u00e2n th\u1ee7 nh\u00e0 cung c\u1ea5p ho\u1eb7c ti\u00eau chu\u1ea9n MSA<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd gi\u1ed1ng nhau, m\u1ed9t module QSFP+ c\u0169ng c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c tr\u00ean c\u1ed5ng ch\u1ec9 h\u1ed7 tr\u1ee3 QSFP28, tr\u1eeb khi switch h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 T\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u00e0 t\u01b0\u01a1ng th\u00edch ti\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch trong h\u1ecd QSFP kh\u00f4ng mang t\u00ednh ph\u1ed5 qu\u00e1t, nh\u01b0ng th\u01b0\u1eddng c\u00f3 m\u1ee9c \u0111\u1ed9 linh ho\u1ea1t nh\u1ea5t \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u1ed5ng QSFP28<\/strong><\/p><ul><li><p>Th\u01b0\u1eddng h\u1ed7 tr\u1ee3 QSFP28 (100G)<\/p><\/li><li><p>Th\u01b0\u1eddng h\u1ed7 tr\u1ee3 QSFP+ (40G) \u1edf ch\u1ebf \u0111\u1ed9 gi\u1ea3m t\u1ed1c (ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p)<\/p><\/li><\/ul><\/li><li><p><strong>C\u1ed5ng QSFP+<\/strong><\/p><ul><li><p>Th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ch\u1ea1y QSFP28 \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc quan tr\u1ecdng:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\">T\u01b0\u01a1ng th\u00edch <\/a>\u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u1ed5ng switch, ch\u1ee9 kh\u00f4ng ch\u1ec9 b\u1edfi module<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n ki\u1ec3m tra b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (datasheet) c\u1ee7a switch tr\u01b0\u1edbc khi k\u1ebft h\u1ee3p c\u00e1c th\u1ebf h\u1ec7 kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Ch\u1ebf \u0111\u1ed9 t\u00e1ch k\u00eanh (Breakout Modes): M\u1ed9t c\u1ed5ng, nhi\u1ec1u li\u00ean k\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng m\u1ea1nh m\u1ebd nh\u1ea5t c\u1ee7a QSFP l\u00e0 kh\u1ea3 n\u0103ng chia t\u00e1ch (breakout), trong \u0111\u00f3 m\u1ed9t c\u1ed5ng t\u1ed1c \u0111\u1ed9 cao duy nh\u1ea5t \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn v\u1ec1 chia t\u00e1ch (breakout):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>100G QSFP28 \u2192 4 \u00d7 25G SFP28<\/p><\/li><li><p>40G QSFP+ \u2192 4 \u00d7 10G SFP+<\/p><\/li><li><p>100G QSFP28 \u2192 2 \u00d7 50G (trong m\u1ed9t s\u1ed1 ki\u1ebfn tr\u00fac)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao chia t\u00e1ch (breakout) l\u1ea1i quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ebf \u0111\u1ed9 chia t\u00e1ch (breakout) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c m\u1ee5c \u0111\u00edch sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1i \u01b0u h\u00f3a k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7<\/p><\/li><li><p>M\u1edf r\u1ed9ng m\u1ea1ng theo t\u1eebng giai \u0111o\u1ea1n (10G \u2192 25G \u2192 100G)<\/p><\/li><li><p>S\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 h\u01a1n c\u00e1c c\u1ed5ng tr\u00ean c\u00e1c switch t\u1ed1c \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec tri\u1ec3n khai nhi\u1ec1u c\u1ed5ng switch, chia t\u00e1ch (breakout) cho ph\u00e9p m\u1ed9t c\u1ed5ng t\u1ed1c \u0111\u1ed9 cao ph\u1ee5c v\u1ee5 nhi\u1ec1u \u0111i\u1ec3m cu\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Ph\u00f9 h\u1ee3p c\u1ed5ng: Tr\u00e1nh c\u00e1c sai l\u1ea7m tri\u1ec3n khai ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c gh\u00e9p sai c\u1ed5ng l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra s\u1ef1 c\u1ed1 khi tri\u1ec3n khai QSFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c quy t\u1eafc ch\u00ednh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00f9 h\u1ee3p t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u v\u1edbi kh\u1ea3 n\u0103ng c\u1ee7a switch<\/p><ul><li><p>QSFP28 100G y\u00eau c\u1ea7u c\u1ed5ng h\u1ed7 tr\u1ee3 100G<\/p><\/li><\/ul><\/li><li><p>Ph\u00f9 h\u1ee3p lo\u1ea1i quang h\u1ecdc (optics)<\/p><ul><li><p>SR (s\u1ee3i \u0111a mode \u2013 MMF) \u2260 LR (s\u1ee3i \u0111\u01a1n mode \u2013 SMF)<\/p><\/li><\/ul><\/li><li><p>Ph\u00f9 h\u1ee3p lo\u1ea1i \u0111\u1ea7u n\u1ed1i<\/p><ul><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/understanding-polarity-in-mtp-mpo-system-for-signal-integrity\/\">MPO<\/a> (quang h\u1ecdc song song) \u2260 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\">LC<\/a> (quang h\u1ecdc duplex)<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 M\u00e3 nh\u00e0 cung c\u1ea5p v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module QSFP hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA (t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 cung c\u1ea5p)<\/p><\/li><li><p>\u0110\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1edfi nh\u00e0 cung c\u1ea5p (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472659.htm\">Cisco<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472128.htm\">Juniper<br><\/a>, v.v.)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c m\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c module c\u00f3 \u0111\u01b0\u1ee3c switch nh\u1eadn di\u1ec7n hay kh\u00f4ng<\/p><\/li><li><p>C\u1ea3nh b\u00e1o ho\u1eb7c c\u1ea3nh b\u00e1o t\u01b0\u01a1ng th\u00edch<\/p><\/li><li><p>Vi\u1ec7c ch\u1ea5p nh\u1eadn firmware<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi mua module QSFP, h\u00e3y x\u00e1c minh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 C\u1ed5ng switch h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 y\u00eau c\u1ea7u (40G \/ 100G \/ 400G)<\/p><\/li><li><p>\u2714 Y\u00eau c\u1ea7u ch\u1ebf \u0111\u1ed9 ph\u00e2n nh\u00e1nh (n\u1ebfu c\u1ea7n)<\/p><\/li><li><p>\u2714 Lo\u1ea1i c\u00e1p quang (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">MMF so v\u1edbi SMF<\/a>)<\/p><\/li><li><p>\u2714 Lo\u1ea1i \u0111\u1ea7u n\u1ed1i (SR, LR, DAC, AOC)<\/p><\/li><li><p>\u2714 T\u00ednh t\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p ho\u1eb7c h\u1ed7 tr\u1ee3 m\u1edf kh\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 QSFP kh\u00f4ng li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9\u2014m\u00e0 li\u00ean quan \u0111\u1ebfn t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 \u00e1nh x\u1ea1 c\u1ed5ng. Vi\u1ec7c hi\u1ec3u r\u00f5 ch\u1ebf \u0111\u1ed9 ph\u00e2n nh\u00e1nh v\u00e0 kh\u1edbp c\u1ed5ng \u0111\u1ea3m b\u1ea3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u00cdt th\u1ea5t b\u1ea1i khi tri\u1ec3n khai h\u01a1n<\/p><\/li><li><p>Hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng c\u1ed5ng t\u1ed1t h\u01a1n<\/p><\/li><li><p>Chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng t\u1ed5ng th\u1ec3 th\u1ea5p h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN.\u00a0<\/strong>K\u1ebft lu\u1eadn: B\u1ea1n n\u00ean ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p cu\u1ed1i c\u00f9ng ph\u1ee5 thu\u1ed9c v\u00e0o quy m\u00f4 m\u1ea1ng, y\u00eau c\u1ea7u hi\u1ec7u n\u0103ng v\u00e0 chi\u1ebfn l\u01b0\u1ee3c n\u00e2ng c\u1ea5p c\u1ee7a b\u1ea1n. M\u1eb7c d\u00f9 c\u00f4ng ngh\u1ec7 QSFP c\u00f3 d\u1ea3i t\u1ed1c \u0111\u1ed9 t\u1eeb 40G \u0111\u1ebfn 800G, l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 t\u1ed1c \u0111\u1ed9 cao nh\u1ea5t\u2014m\u00e0 l\u00e0 t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p nh\u1ea5t v\u1ec1 chi ph\u00ed v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai \u0111\u1ed1i v\u1edbi ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f3m t\u1eaft quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP+ (40G)<\/strong><br\/>Ph\u00f9 h\u1ee3p nh\u1ea5t cho m\u00f4i tr\u01b0\u1eddng k\u1ebf th\u1eeba, n\u00e2ng c\u1ea5p m\u00e1y ch\u1ee7 10G v\u00e0 c\u00e1c tri\u1ec3n khai nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed. V\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u1edbp t\u1eadp h\u1ee3p trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n h\u1eefu.<\/p><\/li><li><p><strong>QSFP28 (100G)<\/strong><br\/>Ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn nh\u1ea5t, l\u00fd t\u01b0\u1edfng cho ki\u1ebfn tr\u00fac spine-leaf, trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i v\u00e0 m\u1ea1ng doanh nghi\u1ec7p c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p><\/li><li><p><strong>QSFP56 (200G)<\/strong><br\/>Ph\u00f9 h\u1ee3p cho c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1eadt \u0111\u1ed9 cao n\u01a1i nhu c\u1ea7u b\u0103ng th\u00f4ng \u0111ang gia t\u0103ng, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao.<\/p><\/li><li><p><strong>QSFP-DD (400G \/ 800G)<\/strong><br\/>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 si\u00eau l\u1edbn, kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c AI v\u00e0 m\u1ea1ng l\u00f5i th\u1ebf h\u1ec7 ti\u1ebfp theo y\u00eau c\u1ea7u th\u00f4ng l\u01b0\u1ee3ng t\u1ed1i \u0111a.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Khung l\u1ef1a ch\u1ecdn th\u1ef1c ti\u1ec5n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP ph\u00f9 h\u1ee3p, h\u00e3y tu\u00e2n theo quy t\u1eafc \u0111\u01a1n gi\u1ea3n sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ea7n hi\u1ec7u qu\u1ea3 chi ph\u00ed + h\u1ed7 tr\u1ee3 h\u1ec7 th\u1ed1ng k\u1ebf th\u1eeba \u2192 40G (QSFP+)<\/p><\/li><li><p>C\u1ea7n hi\u1ec7u n\u0103ng c\u00e2n b\u1eb1ng + kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng \u2192 100G (QSFP28)<\/p><\/li><li><p>C\u1ea7n hi\u1ec7u n\u0103ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y m\u1eadt \u0111\u1ed9 cao \u2192 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">200G (QSFP56)<\/a><\/p><\/li><li><p>C\u1ea7n b\u0103ng th\u00f4ng quy m\u00f4 si\u00eau l\u1edbn ho\u1eb7c c\u1ea5p \u0111\u1ed9 AI \u2192 400G\u2013800G (QSFP-DD)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n l\u1edbn tri\u1ec3n khai th\u1ef1c t\u1ebf ng\u00e0y nay, 100G (QSFP28) v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn n\u1ec1n t\u1ea3ng t\u1ed1i \u01b0u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ec1 t\u1ed1c \u0111\u1ed9\u2014m\u00e0 c\u00f2n l\u00e0 v\u1ec1 chi\u1ebfn l\u01b0\u1ee3c ti\u1ebfn h\u00f3a m\u1ea1ng. M\u1ed7i th\u1ebf h\u1ec7 \u0111\u1ec1u k\u1ebf th\u1eeba c\u00f9ng k\u00edch th\u01b0\u1edbc h\u00ecnh d\u00e1ng, cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i to\u00e0n b\u1ed9 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng.<\/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\/be042a1a002142d3a03db8c730d248dd.jpg\" alt=\"Which QSFP Data Rate Should You Choose?\" class=\"wp-image-2797\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/be042a1a002142d3a03db8c730d248dd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/be042a1a002142d3a03db8c730d248dd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/be042a1a002142d3a03db8c730d248dd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/be042a1a002142d3a03db8c730d248dd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/be042a1a002142d3a03db8c730d248dd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch tri\u1ec3n khai m\u1edbi ho\u1eb7c n\u00e2ng c\u1ea5p v\u00e0o n\u0103m 2026, h\u00e3y \u01b0u ti\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi n\u1ec1n t\u1ea3ng switch c\u1ee7a b\u1ea1n<\/p><\/li><li><p>\u0110\u01b0\u1eddng d\u1eabn n\u00e2ng c\u1ea5p r\u00f5 r\u00e0ng (40G \u2192 100G \u2192 400G)<\/p><\/li><li><p>T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO), ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 b\u0103ng th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7, lu\u00f4n ch\u1ecdn c\u00e1c module <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491587.htm\">C\u00e1c module QSFP<\/a> t\u1eeb nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Kh\u00e1m ph\u00e1 c\u00e1c b\u1ed9 thu ph\u00e1t quang ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i t\u1ea1i <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>, n\u01a1i b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y c\u00e1c module QSFP+, QSFP28 v\u00e0 th\u1ebf h\u1ec7 QSFP ti\u1ebfp theo \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho \u1ee9ng d\u1ee5ng c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 vi\u1ec5n th\u00f4ng v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u QSFP t\u1eeb 40G \u0111\u1ebfn 800G, bao g\u1ed3m QSFP+, QSFP28 v\u00e0 QSFP-DD. So s\u00e1nh t\u1ed1c \u0111\u1ed9, c\u1ea5u tr\u00fac l\u00f5i v\u00e0 ch\u1ecdn \u0111\u00fang module.<\/p>","protected":false},"author":1,"featured_media":2798,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[13,17,18],"class_list":["post-2799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-100g-modules","tag-400g-optical-modules","tag-40g-qsfp-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2799","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=2799"}],"version-history":[{"count":2,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2799\/revisions"}],"predecessor-version":[{"id":8142,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2799\/revisions\/8142"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2798"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}