{"id":3288,"date":"2026-02-07T00:00:00","date_gmt":"2026-02-07T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/what-is-qsfp-dd-400g-transceiver\/"},"modified":"2026-06-22T04:13:50","modified_gmt":"2026-06-22T04:13:50","slug":"what-is-qsfp-dd-400g-transceiver","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-qsfp-dd-400g-transceiver","title":{"rendered":"QSFP-DD l\u00e0 g\u00ec? Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng 400G"},"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\/783dcec9f5e14b6d82a95444e3da61e7.jpg\" alt=\"What Is QSFP-DD\" class=\"wp-image-3276\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/783dcec9f5e14b6d82a95444e3da61e7.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/783dcec9f5e14b6d82a95444e3da61e7-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/783dcec9f5e14b6d82a95444e3da61e7-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/783dcec9f5e14b6d82a95444e3da61e7-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/783dcec9f5e14b6d82a95444e3da61e7-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u01b0u l\u01b0\u1ee3ng trung t\u00e2m d\u1eef li\u1ec7u ti\u1ebfp t\u1ee5c gia t\u0103ng\u2014do \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao (HPC)\u2014c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng ph\u1ea3i m\u1edf r\u1ed9ng quy m\u00f4 v\u01b0\u1ee3t xa chu\u1ea9n Ethernet 100G truy\u1ec1n th\u1ed1ng. C\u00e1c vi m\u1ea1ch chuy\u1ec3n m\u1ea1ch (ASIC) hi\u1ec7n \u0111\u1ea1i gi\u1edd \u0111\u00e2y cung c\u1ea5p dung l\u01b0\u1ee3ng chuy\u1ec3n m\u1ea1ch v\u01b0\u1ee3t qu\u00e1 12,8 Tbps, t\u1eeb \u0111\u00f3 l\u00e0m gia t\u0103ng nhu c\u1ea7u v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p li\u00ean k\u1ebft quang m\u1eadt \u0111\u1ed9 cao h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>QSFP-DD (Quad Small Form-factor Pluggable Double Density)<\/strong> l\u00e0 m\u1ed9t module quang c\u1eafm r\u1eddi c\u00f3 t\u00e1m k\u00eanh <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm\">pluggable optical module<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 <strong>t\u1ed1c \u0111\u1ed9 400G v\u00e0 cao h\u01a1n n\u1eefa<\/strong> trong khi v\u1eabn duy tr\u00ec k\u00edch th\u01b0\u1edbc c\u01a1 h\u1ecdc t\u01b0\u01a1ng t\u1ef1 c\u00e1c module QSFP tr\u01b0\u1edbc \u0111\u00e2y. B\u1eb1ng c\u00e1ch t\u0103ng g\u1ea5p \u0111\u00f4i giao di\u1ec7n \u0111i\u1ec7n t\u1eeb b\u1ed1n k\u00eanh l\u00ean t\u00e1m k\u00eanh, module 400G cho ph\u00e9p k\u1ef9 s\u01b0 m\u1ea1ng t\u0103ng \u0111\u00e1ng k\u1ec3 b\u0103ng th\u00f4ng m\u1eb7t tr\u01b0\u1edbc m\u00e0 kh\u00f4ng c\u1ea7n m\u1edf r\u1ed9ng k\u00edch th\u01b0\u1edbc b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c c\u1ed5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7n nay, QSFP-DD \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn, m\u1ea1ng l\u01b0\u1edbi k\u1ebft n\u1ed1i c\u1ee5m AI v\u00e0 m\u1ea1ng t\u1ed5ng h\u1ee3p c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>QSFP-DD l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">QSFP-DD<\/a> (Quad Small Form-factor Pluggable \u2013 Double Density) l\u00e0 m\u1ed9t d\u1ea1ng module thu ph\u00e1t quang c\u1eafm r\u1eddi c\u00f3 t\u00e1m k\u00eanh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng li\u00ean k\u1ebft Ethernet v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u l\u00ean m\u1ee9c <strong>400G<\/strong> v\u00e0 c\u00e1c m\u1ee9c t\u1ed1c \u0111\u1ed9 m\u1edbi n\u1ed5i <strong>800G<\/strong> N\u00f3 m\u1edf r\u1ed9ng giao di\u1ec7n \u0111i\u1ec7n t\u1eed QSFP truy\u1ec1n th\u1ed1ng t\u1eeb <strong>b\u1ed1n k\u00eanh l\u00ean t\u00e1m k\u00eanh<\/strong>, t\u1eeb \u0111\u00f3 hi\u1ec7u qu\u1ea3 nh\u00e2n \u0111\u00f4i b\u0103ng th\u00f4ng kh\u1ea3 d\u1ee5ng trong c\u00f9ng m\u1ed9t k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thu\u1eadt ng\u1eef <strong>\u201cm\u1eadt \u0111\u1ed9 k\u00e9p\u201d<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ki\u1ebfn tr\u00fac \u0111i\u1ec7n m\u1edf r\u1ed9ng n\u00e0y. B\u1eb1ng c\u00e1ch b\u1ed5 sung th\u00eam m\u1ed9t h\u00e0ng ti\u1ebfp \u0111i\u1ec3m \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao th\u1ee9 hai, QSFP-DD cung c\u1ea5p t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed5ng cao h\u01a1n trong khi v\u1eabn <strong>duy tr\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc ng\u01b0\u1ee3c<\/strong> v\u1edbi c\u00e1c module <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491590.htm\">QSFP+<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\">QSFP28<br><\/a>, and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">QSFP56<\/a> hi\u1ec7n c\u00f3. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00e0 v\u1eadn h\u00e0nh trung t\u00e2m d\u1eef li\u1ec7u th\u1ef1c hi\u1ec7n l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p li\u1ec1n m\u1ea1ch m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i ho\u00e0n to\u00e0n c\u00e1c c\u1ed5ng chuy\u1ec3n m\u1ea1ch ho\u1eb7c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p.<\/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\/5a4db047f5c84901b0b1e10f4f5cb77e.jpg\" alt=\"What Is QSFP-DD, Key Characteristics\" class=\"wp-image-3277\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5a4db047f5c84901b0b1e10f4f5cb77e.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5a4db047f5c84901b0b1e10f4f5cb77e-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5a4db047f5c84901b0b1e10f4f5cb77e-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5a4db047f5c84901b0b1e10f4f5cb77e-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5a4db047f5c84901b0b1e10f4f5cb77e-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a QSFP-DD<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u00e1m k\u00eanh \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao<\/strong> nh\u1eb1m t\u0103ng m\u1eadt \u0111\u1ed9 b\u0103ng th\u00f4ng<\/p><\/li><li><p><strong>H\u1ed7 tr\u1ee3 <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\/\"><strong>PAM4<\/strong><\/a><strong> v\u00e0 t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-non-return-to-zero-in-digital-communication\/\"><strong>v\u1edbi \u0111i\u1ec1u ch\u1ebf NRZ<\/strong><\/a>, t\u00f9y thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9 v\u00e0 \u1ee9ng d\u1ee5ng<\/p><\/li><li><p><strong>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho Ethernet 200G, 400G v\u00e0 c\u00e1c chu\u1ea9n Ethernet 800G m\u1edbi n\u1ed5i<\/strong> Vi\u1ec7c tri\u1ec3n khai m\u1ea1ng<\/p><\/li><li><p><strong>T\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc ng\u01b0\u1ee3c<\/strong> v\u1edbi c\u00e1c module QSFP+\/QSFP28<\/p><\/li><li><p><strong>\u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng AI\/ML<\/strong>, n\u01a1i m\u1eadt \u0111\u1ed9 c\u1ed5ng v\u00e0 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7n nay, QSFP-DD \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u01b0 n\u1ec1n t\u1ea3ng quang h\u1ecdc c\u1eafm r\u1eddi 400G ch\u00ednh trong c\u00e1c m\u00f4i tr\u01b0\u1eddng chuy\u1ec3n m\u1ea1ch trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, t\u1ea1o n\u1ec1n t\u1ea3ng cho c\u00e1c m\u1ea1ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>QSFP-DD gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-application-specific-integrated-circuit-asic\/\">ASIC<\/a> Khi b\u0103ng th\u00f4ng t\u0103ng nhanh v\u01b0\u1ee3t qu\u00e1 12,8 Tbps, c\u00e1c module QSFP28 truy\u1ec1n th\u1ed1ng\u2014b\u1ecb gi\u1edbi h\u1ea1n \u1edf b\u1ed1n \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n\u2014tr\u1edf th\u00e0nh \u0111i\u1ec3m ngh\u1ebdn v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/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\/c0b24c0e85b24ceaac39641a6458741b.jpg\" alt=\"What Problem Does QSFP-DD Solve?\" class=\"wp-image-3278\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b24c0e85b24ceaac39641a6458741b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b24c0e85b24ceaac39641a6458741b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b24c0e85b24ceaac39641a6458741b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b24c0e85b24ceaac39641a6458741b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b24c0e85b24ceaac39641a6458741b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD gi\u1ea3i quy\u1ebft ba th\u00e1ch th\u1ee9c c\u01a1 b\u1ea3n trong vi\u1ec7c tri\u1ec3n khai m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u1ea1n ch\u1ebf v\u1ec1 m\u1eadt \u0111\u1ed9 c\u1ed5ng tr\u00ean m\u1eb7t tr\u01b0\u1edbc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c d\u1ea1ng th\u00e2n QSFP th\u00f4ng th\u01b0\u1eddng gi\u1edbi h\u1ea1n l\u01b0\u1ee3ng b\u0103ng th\u00f4ng c\u00f3 th\u1ec3 cung c\u1ea5p cho m\u1ed7i c\u1ed5ng chuy\u1ec3n m\u1ea1ch. Vi\u1ec7c t\u0103ng th\u00f4ng l\u01b0\u1ee3ng chuy\u1ec3n m\u1ea1ch m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc khung y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng. QSFP-DD gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch cho ph\u00e9p truy\u1ec1n d\u1eabn 400G trong khi v\u1eabn duy tr\u00ec k\u00edch th\u01b0\u1edbc c\u1ed5ng t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00f4ng kh\u1edbp v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ASIC th\u1ebf h\u1ec7 ti\u1ebfp theo h\u1ed7 tr\u1ee3 s\u1ed1 l\u01b0\u1ee3ng \u0111\u01b0\u1eddng d\u1eabn v\u00e0 t\u1ed1c \u0111\u1ed9 cao h\u01a1n. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/serdes-interfaces-high-speed-data-transfer-and-signal-integrity\/\">SerDes<\/a> QSFP-DD ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng n\u00e0y b\u1eb1ng c\u00e1ch m\u1edf r\u1ed9ng l\u00ean <strong>t\u00e1m \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n<\/strong>, cho ph\u00e9p \u00e1nh x\u1ea1 hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n c\u1ee7a ASIC ch\u1ee7 v\u00e0 giao di\u1ec7n quang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u0103ng th\u00f4ng cao h\u01a1n \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng x\u1eed l\u00fd t\u00edn hi\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1 (DSP) v\u00e0 s\u1eeda l\u1ed7i ti\u1ebfn tr\u01b0\u1edbc (FEC) t\u0103ng l\u00ean. B\u1ed9 thu ph\u00e1t 400G \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u n\u00e0y \u0111\u1ed3ng th\u1eddi c\u00e2n b\u1eb1ng c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 l\u00e0m m\u00e1t v\u00e0 l\u01b0u l\u01b0\u1ee3ng kh\u00ed trong c\u00e1c tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/digital-signal-processor-functionality-in-optical-transceivers\/\">x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1<\/a> B\u1eb1ng c\u00e1ch nh\u00e2n \u0111\u00f4i giao di\u1ec7n \u0111i\u1ec7n l\u00ean t\u00e1m \u0111\u01b0\u1eddng d\u1eabn, QSFP-DD \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng l\u01b0\u1ee3ng 400G m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng di\u1ec7n t\u00edch chi\u1ebfm ch\u1ed7 tr\u00ean m\u1eb7t tr\u01b0\u1edbc, gi\u00fap trung t\u00e2m d\u1eef li\u1ec7u m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng trong khu\u00f4n kh\u1ed5 h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng \u0111i\u1ec1u k\u1ef9 s\u01b0 c\u1ea7n ki\u1ec3m tra tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng QSFP-DD.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c nh\u1eadn s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a ASIC v\u00e0 ph\u1ea7n m\u1ec1m\u56fa\u4ef6 chuy\u1ec3n m\u1ea1ch \u0111\u1ed1i v\u1edbi s\u01a1 \u0111\u1ed3 ch\u00e2n \u0111i\u1ec7n v\u00e0 ch\u1ebf \u0111\u1ed9 ph\u00e2n nh\u00e1nh (breakout) c\u1ee7a QSFP-DD.<\/h3>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>H\u1ed7 tr\u1ee3 n\u1ec1n t\u1ea3ng:<\/strong> Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t:.<\/p><\/li><li><p><strong>Ki\u1ec3m tra d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t tr\u00ean m\u1ed7i c\u1ed5ng v\u00e0 to\u00e0n b\u1ed9 khung trong \u0111i\u1ec1u ki\u1ec7n ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t l\u1edbn nh\u1ea5t c\u1ee7a module.<\/strong> K\u1ebf ho\u1ea1ch t\u1ea3n nhi\u1ec7t:.<\/p><\/li><li><p><strong>X\u00e1c th\u1ef1c l\u01b0u l\u01b0\u1ee3ng kh\u00ed, \u0111\u1eb7c tuy\u1ebfn qu\u1ea1t v\u00e0 c\u1ea3nh b\u00e1o nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi t\u1ea3i l\u01b0u l\u01b0\u1ee3ng li\u00ean t\u1ee5c.<\/strong> \u0110\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u:.<\/p><\/li><li><p><strong>\u0110\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u:<\/strong> \u0110\u00e1nh gi\u00e1 \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng d\u1eabn theo d\u00f5i m\u00e1y ch\u1ee7 v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 n\u1ed1i; \u01b0u ti\u00ean c\u00e1c \u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ng\u1eafn cho c\u00e1c k\u00eanh PAM4.<\/p><\/li><li><p><strong>Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c:<\/strong> Th\u1ef1c hi\u1ec7n ki\u1ec3m tra chung gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p (ma tr\u1eadn t\u01b0\u01a1ng th\u00edch, ch\u1ea1y r\u00e0, v\u00e0 x\u00e1c th\u1ef1c bi\u00ean \u0111\u1ed9 li\u00ean k\u1ebft) tr\u01b0\u1edbc khi tri\u1ec3n khai s\u1ea3n xu\u1ea5t.<\/p><\/li><li><p><strong>Monitoring:<\/strong> \u0110\u1ea3m b\u1ea3o h\u1ed7 tr\u1ee3 v\u00e0 t\u00edch h\u1ee3p d\u1eef li\u1ec7u gi\u00e1m s\u00e1t\/diagnostic (DOM) v\u1ec1 nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t quang v\u00e0o h\u1ec7 th\u1ed1ng NMS\/gi\u00e1m s\u00e1t.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt k\u1ef9 thu\u1eadt ch\u00ednh c\u1ee7a QSFP-DD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472202.htm\">400G QSFP-DD<\/a> H\u1ed7 tr\u1ee3 nhi\u1ec1u t\u1ed1c \u0111\u1ed9 k\u00eanh v\u00e0 c\u00f4ng ngh\u1ec7 \u0111i\u1ec1u ch\u1ebf \u0111\u1ec3 cho ph\u00e9p thi\u1ebft k\u1ebf li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao linh ho\u1ea1t.<\/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\/153a9da94b624c3cb7aa0a52d50fa497.jpg\" alt=\"QSFP-DD Key Technical Specifications\" class=\"wp-image-3279\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/153a9da94b624c3cb7aa0a52d50fa497.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/153a9da94b624c3cb7aa0a52d50fa497-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/153a9da94b624c3cb7aa0a52d50fa497-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/153a9da94b624c3cb7aa0a52d50fa497-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/153a9da94b624c3cb7aa0a52d50fa497-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP-DD<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c k\u00eanh \u0111i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25G \/ 50G PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed5ng h\u1ee3p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>200G \/ 400G \/ 800G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec1u ch\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ (c\u0169), PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea7u n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ed9 n\u1ed1i vi\u1ec1n QSFP-DD<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>QSFP+, QSFP28 (h\u1ed7 tr\u1ee3 v\u1ecf b\u1ecdc v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chuy\u1ec3n m\u1ea1ch spine-leaf trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u1ea3i th\u00edch chi ti\u1ebft v\u00e0 gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c k\u00eanh \u0111i\u1ec7n v\u00e0 t\u1ed1c \u0111\u1ed9 k\u00eanh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>L\u00e0 g\u00ec:<\/strong> QSFP-DD t\u0103ng s\u1ed1 l\u01b0\u1ee3ng k\u00eanh \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0a \u0111\u1ebfn m\u00e1y ch\u1ee7 t\u1eeb 4 (QSFP28) l\u00ean <strong>8 k\u00eanh<\/strong>.<\/p><\/li><li><p><strong>T\u1ed1c \u0111\u1ed9 k\u00eanh th\u1ef1c t\u1ebf:<\/strong> 25G NRZ (c\u0169 \/ li\u00ean k\u1ebft ch\u1eadm h\u01a1n), <strong>50G PAM4<\/strong> (ph\u1ed5 bi\u1ebfn cho 400G), v\u00e0 <strong>PAM4 100G<\/strong> (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u th\u1eed nghi\u1ec7m\/c\u00e0i \u0111\u1eb7t 800G).<\/p><\/li><li><p><strong>T\u00e1c \u0111\u1ed9ng thi\u1ebft k\u1ebf:<\/strong> Vi\u1ec7c b\u1ed1 tr\u00ed m\u1ea1ch in tr\u00ean bo m\u1ea1ch ch\u1ee7 (PCB), ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9 n\u1ed1i v\u00e0 c\u1ea5u h\u00ecnh SerDes ph\u1ea3i h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 k\u00eanh v\u00e0 ki\u1ec3u t\u00edn hi\u1ec7u \u0111\u00e3 ch\u1ecdn.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed5ng h\u1ee3p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1ch h\u00ecnh th\u00e0nh t\u1ed1c \u0111\u1ed9 t\u1ed5ng h\u1ee3p:<\/strong> t\u1ed1c \u0111\u1ed9 t\u1ed5ng h\u1ee3p = (s\u1ed1 k\u00eanh) \u00d7 (t\u1ed1c \u0111\u1ed9 k\u00eanh). V\u00ed d\u1ee5: 8 \u00d7 50G = 400G.<\/p><\/li><li><p><strong>C\u00e1c t\u1ed1c \u0111\u1ed9 t\u1ed5ng h\u1ee3p ph\u1ed5 bi\u1ebfn:<\/strong> 200G (v\u00ed d\u1ee5: 8 \u00d7 25G), 400G (8 \u00d7 50G), 800G (8 \u00d7 100G ho\u1eb7c c\u00e1c c\u00e1ch g\u1ed9p k\u00eanh kh\u00e1c).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec1u ch\u1ebf (<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-the-difference-between-nrz-and-pam4\/\"><strong>NRZ so v\u1edbi PAM4<\/strong><\/a><strong>)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>NRZ (kh\u00f4ng quay v\u1ec1 zero):<\/strong> \u0111\u01a1n gi\u1ea3n h\u01a1n, t\u1eebng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng truy\u1ec1n th\u1ed1ng \u1edf m\u1ee9c 10\/25\/28G m\u1ed7i k\u00eanh.<\/p><\/li><li><p><strong>PAM4 (\u0111i\u1ec1u ch\u1ebf bi\u00ean \u0111\u1ed9 xung 4 m\u1ee9c):<\/strong> nh\u00e2n \u0111\u00f4i s\u1ed1 bit tr\u00ean m\u1ed7i k\u00fd hi\u1ec7u so v\u1edbi NRZ, cho ph\u00e9p \u0111\u1ea1t 50G\/100G m\u1ed7i k\u00eanh v\u1edbi c\u00f9ng t\u1ed1c \u0111\u1ed9 baud nh\u01b0ng \u0111\u00f2i h\u1ecfi x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP) n\u00e2ng cao, c\u00e2n b\u1eb1ng m\u1ea1nh h\u01a1n v\u00e0 m\u00e3 h\u00f3a s\u1eeda l\u1ed7i (FEC) \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p><\/li><li><p><strong>H\u1ec7 qu\u1ea3 th\u1ef1c t\u1ebf:<\/strong> PAM4 l\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p, c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 c\u1ee7a module c\u0169ng nh\u01b0 y\u00eau c\u1ea7u v\u1ec1 t\u1ef7 l\u1ec7 SNR v\u00e0 c\u00e2n b\u1eb1ng k\u00eanh.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1ed9 n\u1ed1i v\u00e0 y\u1ebfu t\u1ed1 h\u00ecnh h\u1ecdc c\u01a1 h\u1ecdc<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>B\u1ed9 n\u1ed1i QSFP-DD:<\/strong> s\u1eed d\u1ee5ng m\u1ea3ng ti\u1ebfp \u0111i\u1ec3m hai h\u00e0ng (m\u1eadt \u0111\u1ed9 k\u00e9p) trong v\u1ecf b\u1ecdc k\u00edch th\u01b0\u1edbc QSFP \u0111\u1ec3 truy\u1ec1n 8 k\u00eanh t\u1ed1c \u0111\u1ed9 cao.<\/p><\/li><li><p><strong>T\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc:<\/strong> nhi\u1ec1u v\u1ecf b\u1ecdc QSFP-DD ch\u1ea5p nh\u1eadn module QSFP28\/QSFP+ v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc, nh\u01b0ng <strong>t\u01b0\u01a1ng th\u00edch ch\u1ee9c n\u0103ng<\/strong> ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ea1ch in b\u1ea3ng m\u1ea1ch ch\u1ee7 (PCB) v\u00e0 h\u1ed7 tr\u1ee3 firmware (xem ph\u1ea7n t\u01b0\u01a1ng th\u00edch).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>V\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc so v\u1edbi ch\u1ee9c n\u0103ng:<\/strong> <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-24695-qsfp-dd-cages-connectors.htm\">V\u1ecf b\u1ecdc QSFP-DD<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf c\u00f3 ch\u1ee7 \u0111\u00edch \u0111\u1ec3 ch\u1ea5p nh\u1eadn h\u00ecnh d\u1ea1ng c\u01a1 h\u1ecdc c\u1ee7a module QSFP c\u0169, nh\u01b0ng b\u1ea1n ph\u1ea3i x\u00e1c minh r\u1eb1ng <strong>b\u1ea3ng m\u1ea1ch ch\u1ee7 \/ ASIC \/ firmware<\/strong> h\u1ed7 tr\u1ee3 vi\u1ec7c \u00e1nh x\u1ea1 \u0111i\u1ec7n v\u00e0 th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 c\u1ea7n thi\u1ebft cho c\u00e1c module c\u0169 h\u01a1n.<\/p><\/li><li><p><strong>H\u00e0nh vi chia k\u00eanh (breakout):<\/strong> m\u1ed9t s\u1ed1 n\u1ec1n t\u1ea3ng h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 chia k\u00eanh (v\u00ed d\u1ee5: 1\u00d7400G \u2192 4\u00d7100G), nh\u01b0ng \u0111i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o tri\u1ec3n khai ASIC v\u00e0 firmware.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t (ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh)<\/strong><\/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>QSFP28 100G<\/strong><\/a><strong>:<\/strong> ~3,5\u20134,5 W (\u0111i\u1ec3m tham chi\u1ebfu)<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472208.htm\"><strong>C\u00e1c module QSFP-DD 400G<\/strong><\/a><strong>:<\/strong> c\u00e1c module s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf th\u01b0\u1eddng ti\u00eau th\u1ee5 <strong>~10\u201314 W<\/strong>; h\u00e3y thi\u1ebft k\u1ebf theo tr\u01b0\u1eddng h\u1ee3p x\u1ea5u nh\u1ea5t (gi\u00e1 tr\u1ecb t\u1ed1i \u0111a do nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh) khi l\u1eadp k\u1ebf ho\u1ea1ch ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t\/nhi\u1ec7t.<\/p><\/li><li><p><strong>QSFP-DD 800G:<\/strong> c\u00e1c chip\/module \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 ti\u00eau th\u1ee5 <strong>16\u201320 W<\/strong> ho\u1eb7c cao h\u01a1n.<\/p><\/li><li><p><strong>Ghi ch\u00fa thi\u1ebft k\u1ebf:<\/strong> s\u1eed d\u1ee5ng m\u1ee9c c\u00f4ng su\u1ea5t x\u1ea5u nh\u1ea5t\/tr\u00ean m\u1ed7i module \u0111\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n v\u00e0 t\u1ea3n nhi\u1ec7t cho khung m\u00e1y; c\u1ea3 t\u1ea3i t\u1ee9c th\u1eddi v\u00e0 t\u1ea3i \u1ed5n \u0111\u1ecbnh \u0111\u1ec1u quan tr\u1ecdng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Giao di\u1ec7n quang v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n (c\u00e1c s\u01a1 \u0111\u1ed3 400G \u0111i\u1ec3n h\u00ecnh)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SR8 (s\u1ee3i quang \u0111a mode \u2013 MMF):<\/strong> kho\u1ea3ng c\u00e1ch ng\u1eafn, th\u01b0\u1eddng l\u00ean \u0111\u1ebfn ~100 m tr\u00ean s\u1ee3i quang \u0111a mode OM4\/OM5 b\u1eb1ng \u0111\u1ea7u n\u1ed1i MPO\/MTP.<\/p><\/li><li><p><strong>DR4 (s\u1ee3i quang \u0111\u01a1n mode \u2013 SMF):<\/strong> ~500 m tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (4 k\u00eanh 100G ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng).<\/p><\/li><li><p><strong>FR4 (SMF):<\/strong> lo\u1ea1i kho\u1ea3ng c\u00e1ch ~2 km.<\/p><\/li><li><p><strong>LR4 (SMF):<\/strong> lo\u1ea1i kho\u1ea3ng c\u00e1ch ~10 km.<br\/>(Kho\u1ea3ng c\u00e1ch th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o quang h\u1ecdc c\u1ee7a nh\u00e0 cung c\u1ea5p, lo\u1ea1i s\u1ee3i quang, ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n, t\u1ed5n hao t\u1ea1i \u0111\u1ea7u n\u1ed1i\/v\u1ebft n\u1ed1i v\u00e0 m\u00e3 h\u00f3a FEC.)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ea9n \u0111o\u00e1n v\u00e0 qu\u1ea3n l\u00fd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>DDM\/DOM:<\/strong> C\u00e1c module QSFP-DD cung c\u1ea5p ch\u1ee9c n\u0103ng ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (truy c\u1eadp qua I\u00b2C) \u0111\u1ec3 gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p c\u1ea5p, d\u00f2ng thi\u00ean \u00e1p laser, c\u00f4ng su\u1ea5t quang ph\u00e1t\/thu, v.v. H\u00e3y t\u00edch h\u1ee3p d\u1eef li\u1ec7u t\u1eeb xa v\u00e0o <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/network-management-system-nms-monitoring-control-security\/\">h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u1ea1ng (NMS)<\/a> \u0111\u1ec3 gi\u00e1m s\u00e1t ch\u1ee7 \u0111\u1ed9ng.<\/p><\/li><li><p><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1 d\u1eef li\u1ec7u t\u1eeb xa:<\/strong> thi\u1ebft l\u1eadp ng\u01b0\u1ee1ng c\u1ea3nh b\u00e1o\/t\u1edbi h\u1ea1n nghi\u00eam ng\u1eb7t v\u00e0 ki\u1ec3m ch\u1ee9ng d\u1ef1a tr\u00ean h\u00e0nh vi gi\u1ea3m xung nh\u1ecbp do nhi\u1ec7t.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 thi\u1ebft k\u1ebf k\u00eanh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110\u1ed9 nh\u1ea1y k\u00eanh:<\/strong> 8 k\u00eanh \u1edf ch\u1ebf \u0111\u1ed9 PAM4 l\u00e0m gia t\u0103ng y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u\u2014vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn tr\u1edf kh\u00e1ng ki\u1ec3m so\u00e1t, r\u00fat ng\u1eafn chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng d\u1eabn, x\u1eed l\u00fd c\u1ea9n th\u1eadn ph\u1ea7n d\u01b0 c\u1ee7a l\u1ed7 khoan (via stubs) v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i ch\u1ea5t l\u01b0\u1ee3ng cao l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu.<\/p><\/li><li><p><strong>Vai tr\u00f2 c\u1ee7a DSP\/FEC:<\/strong> DSP v\u00e0 FEC t\u00edch h\u1ee3p tr\u00ean module b\u00f9 tr\u1eeb c\u00e1c suy gi\u1ea3m k\u00eanh, nh\u01b0ng kh\u00f4ng th\u1ec3 thay th\u1ebf cho vi\u1ec7c thi\u1ebft k\u1ebf k\u00eanh \u0111\u00fang c\u00e1ch.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ti\u00eau chu\u1ea9n v\u00e0 h\u1ec7 sinh th\u00e1i<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceivers-msa-standards-guide\/\"><strong>C\u00e1c hi\u1ec7p h\u1ed9i ti\u00eau chu\u1ea9n \u0111a nh\u00e0 s\u1ea3n xu\u1ea5t (MSAs)<\/strong><\/a><strong> &amp; <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ieee-institute-of-electrical-and-electronics-engineers\/\"><strong>IEEE<\/strong><\/a><strong>:<\/strong> C\u00e1c chi ti\u1ebft c\u01a1 kh\u00ed\/\u0111i\u1ec7n c\u1ee7a QSFP-DD \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong Hi\u1ec7p \u0111\u1ecbnh \u0110a ngu\u1ed3n QSFP-DD (QSFP-DD MSA); c\u00e1c PHY quang 400G v\u00e0 PMD \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong IEEE 802.3 (v\u00ed d\u1ee5: \u0111\u1eb7c t\u1ea3 400GBASE). S\u1eed d\u1ee5ng t\u00e0i li\u1ec7u MSA v\u00e0 ti\u00eau chu\u1ea9n IEEE l\u00e0m t\u00e0i li\u1ec7u tham kh\u1ea3o ch\u00ednh th\u1ee9c khi x\u00e1c th\u1ef1c thi\u1ebft k\u1ebf v\u00e0 tuy\u00ean b\u1ed1.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng g\u00ec c\u1ea7n ki\u1ec3m tra cho t\u1eebng m\u1ee5c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472204.htm\">Module QSFP-DD<\/a><\/h3>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>C\u1ea5u h\u00ecnh k\u00eanh (lane):<\/strong> X\u00e1c nh\u1eadn s\u1ed1 l\u01b0\u1ee3ng k\u00eanh v\u00e0 t\u1ed1c \u0111\u1ed9 k\u00eanh (v\u00ed d\u1ee5: 8 \u00d7 50G PAM4).<\/p><\/li><li><p><strong>L\u1edbp c\u00f4ng su\u1ea5t (Power class):<\/strong> Ki\u1ec3m tra m\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t \u0111i\u1ec3n h\u00ecnh v\u00e0 t\u1ed1i \u0111a; l\u1eadp k\u1ebf ho\u1ea1ch c\u00f4ng su\u1ea5t khung m\u00e1y\/b\u1ed9 ngu\u1ed3n (PSU) t\u01b0\u01a1ng \u1ee9ng.<\/p><\/li><li><p><strong>Bao b\u00ec nhi\u1ec7t (Thermal envelope):<\/strong> X\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t c\u1ee7a module v\u00e0 y\u00eau c\u1ea7u l\u01b0u l\u01b0\u1ee3ng kh\u00ed l\u00e0m m\u00e1t (airflow) c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 (host).<\/p><\/li><li><p><strong>Giao di\u1ec7n quang v\u00e0 t\u1ea7m ho\u1ea1t \u0111\u1ed9ng (reach):<\/strong> \u00c1nh x\u1ea1 SR8\/DR4\/FR4\/LR4 v\u00e0 ng\u00e2n s\u00e1ch li\u00ean k\u1ebft (c\u00f4ng su\u1ea5t ph\u00e1t\/thu, \u0111\u1ed9 nh\u1ea1y b\u1ed9 thu).<\/p><\/li><li><p><strong>FEC &amp; DSP:<\/strong> Ki\u1ec3m tra ch\u1ebf \u0111\u1ed9 y\u00eau c\u1ea7u <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fec-forward-error-correction-in-optical-communication\/\">FEC<\/a> v\u00e0 m\u1ecdi h\u1ec7 qu\u1ea3 v\u1ec1 \u0111\u1ed9 tr\u1ec5 (latency).<\/p><\/li><li><p><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch:<\/strong> X\u00e1c nh\u1eadn h\u1ed7 tr\u1ee3 ASIC thi\u1ebft b\u1ecb ch\u1ee7, c\u00e1c ch\u1ebf \u0111\u1ed9 chia nh\u00e1nh (breakout modes) v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch firmware.<\/p><\/li><li><p><strong>\u0110\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u:<\/strong> Xem l\u1ea1i chi\u1ec1u d\u00e0i m\u1ea1ch in (trace) thi\u1ebft b\u1ecb ch\u1ee7, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ea7u n\u1ed1i\/v\u1ecf (connector\/cage) v\u00e0 c\u00e1c thi\u1ebft l\u1eadp c\u00e2n b\u1eb1ng SerDes (equalization settings) y\u00eau c\u1ea7u.<\/p><\/li><li><p><strong>\u0110o l\u01b0\u1eddng t\u1eeb xa (Telemetry):<\/strong> \u0110\u1ea3m b\u1ea3o \u00e1nh x\u1ea1 I\u00b2C DOM\/DDM v\u00e0 t\u00edch h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u1ea1ng (NMS).<\/p><\/li><li><p><strong>Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c:<\/strong> Th\u1ef1c hi\u1ec7n ki\u1ec3m tra ch\u1ea1y r\u00e0 (burn-in) n\u1ec1n t\u1ea3ng v\u00e0 ki\u1ec3m tra li\u00ean k\u1ebft hai chi\u1ec1u (mutual link tests) trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9\/c\u00f4ng su\u1ea5t x\u1ea5u nh\u1ea5t.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>Gi\u1ea3i th\u00edch Ki\u1ebfn tr\u00fac \u0110i\u1ec7n c\u1ee7a QSFP-DD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD (Quad Small Form Factor Pluggable \u2013 Double Density) \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u0103ng th\u00f4ng c\u1ed5ng cao h\u01a1n b\u1eb1ng c\u00e1ch <strong>nh\u00e2n \u0111\u00f4i s\u1ed1 l\u01b0\u1ee3ng k\u00eanh \u0111i\u1ec7n t\u1eeb 4 l\u00ean 8<\/strong> trong c\u00f9ng k\u00edch th\u01b0\u1edbc d\u1ea1ng th\u1ee9c (form factor) QSFP. Thay \u0111\u1ed5i ki\u1ebfn tr\u00fac n\u00e0y cho ph\u00e9p c\u00e1c ASIC chuy\u1ec3n m\u1ea1ch th\u1ebf h\u1ec7 ti\u1ebfp theo m\u1edf r\u1ed9ng quy m\u00f4 v\u01b0\u1ee3t qu\u00e1 100G m\u00e0 kh\u00f4ng t\u0103ng chi\u1ec1u r\u1ed9ng m\u1eb7t tr\u01b0\u1edbc (front-panel).<\/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\/cd96cd1546c344068df2f034d931c536.jpg\" alt=\"QSFP-DD Electrical Architecture, Block Diagram\" class=\"wp-image-3280\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd96cd1546c344068df2f034d931c536.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd96cd1546c344068df2f034d931c536-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd96cd1546c344068df2f034d931c536-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd96cd1546c344068df2f034d931c536-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd96cd1546c344068df2f034d931c536-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 So s\u00e1nh B\u1ed1 tr\u00ed K\u00eanh (Lane Layout)<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 s\u1ed1 d\u1ea1ng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u00e1c k\u00eanh \u0111i\u1ec7n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP+<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 10G<\/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><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>QSFP-DD<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>8 \u00d7 25G \/ 50G<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>400G \/ 800G<\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa k\u1ef9 thu\u1eadt: Ph\u1ea7n l\u1edbn c\u00e1c module <strong>400G \u0111ang tri\u1ec3n khai s\u1eed d\u1ee5ng 8 \u00d7 50G PAM4<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 C\u00e1ch \u0110\u1ea1t \u0110\u01b0\u1ee3c M\u1eadt \u0110\u1ed9 G\u1ea5p \u0110\u00f4i (Double Density)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472205.htm\">B\u1ed9 thu ph\u00e1t QSFP-DD<\/a> gi\u1edbi thi\u1ec7u <strong>h\u00e0ng th\u1ee9 hai c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao<\/strong> b\u00ean trong \u0111\u1ea7u n\u1ed1i, \u0111\u1ed3ng th\u1eddi duy tr\u00ec k\u00edch th\u01b0\u1edbc v\u1ecf (cage) QSFP quen thu\u1ed9c. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u0103n ch\u1ec9nh \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp v\u1edbi SerDes 8 k\u00eanh c\u1ee7a ASIC chuy\u1ec3n m\u1ea1ch<\/p><\/li><li><p>B\u0103ng th\u00f4ng tr\u00ean m\u1ed7i c\u1ed5ng cao h\u01a1n m\u00e0 kh\u00f4ng gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng tr\u00ean m\u1eb7t tr\u01b0\u1edbc<\/p><\/li><li><p>T\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc v\u1edbi c\u00e1c v\u1ecf QSFP c\u0169 (v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 t\u1eeb thi\u1ebft b\u1ecb ch\u1ee7)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 H\u1ec7 qu\u1ea3 Ki\u1ebfn tr\u00fac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e2n \u0111\u00f4i m\u1eadt \u0111\u1ed9 k\u00eanh v\u00e0 \u00e1p d\u1ee5ng \u0111i\u1ec1u ch\u1ebf PAM4 mang l\u1ea1i m\u1ed9t s\u1ed1 h\u1ec7 qu\u1ea3 \u1edf c\u1ea5p \u0111\u1ed9 h\u1ec7 th\u1ed1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110\u1ed9 nh\u1ea1y v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u cao h\u01a1n<\/strong> do s\u1ed1 l\u01b0\u1ee3ng lane t\u0103ng v\u00e0 t\u1ed5n th\u1ea5t k\u00eanh t\u0103ng<\/p><\/li><li><p><strong>X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP) v\u00e0 m\u00e3 h\u00f3a s\u1eeda l\u1ed7i (FEC) b\u1eaft bu\u1ed9c<\/strong> \u0111\u1ec3 b\u00f9 l\u1ea1i bi\u00ean \u0111\u1ed9 nhi\u1ec5u gi\u1ea3m c\u1ee7a PAM4<\/p><\/li><li><p><strong>M\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t t\u0103ng<\/strong>, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t v\u00e0 lu\u1ed3ng kh\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u1ebfu t\u1ed1 n\u00e0y khi\u1ebfn vi\u1ec7c t\u00edch h\u1ee3p module 400G tr\u1edf n\u00ean kh\u1eaft khe h\u01a1n so v\u1edbi QSFP28 v\u00e0 y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn cho b\u1ea3ng m\u1ea1ch in ch\u1ee7 (PCB), ngu\u1ed3n \u0111i\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 V\u00ec sao ki\u1ebfn tr\u00fac n\u00e0y quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ebfn tr\u00fac \u0111i\u1ec7n c\u1ee7a QSFP-DD thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa b\u0103ng th\u00f4ng ASIC chuy\u1ec3n m\u1ea1ch \u0111ang m\u1edf r\u1ed9ng nhanh ch\u00f3ng (\u226512,8 Tbps) v\u00e0 m\u1eadt \u0111\u1ed9 m\u1eb7t tr\u01b0\u1edbc th\u1ef1c t\u1ebf. N\u00f3 h\u1ed7 tr\u1ee3 400G\u2014v\u00e0 \u0111\u1eb7t n\u1ec1n t\u1ea3ng \u0111i\u1ec7n h\u1ecdc cho 800G\u2014m\u00e0 kh\u00f4ng b\u1eaft bu\u1ed9c ph\u1ea3i thi\u1ebft k\u1ebf l\u1ea1i c\u01a1 h\u1ecdc g\u00e2y gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>C\u00e1c lo\u1ea1i module QSFP-DD 400G<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD h\u1ed7 tr\u1ee3 nhi\u1ec1u chu\u1ea9n giao di\u1ec7n quang \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang kh\u00e1c nhau.<\/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\/ecee655e42824b16b812d98802fb28c9.jpg\" alt=\"400G QSFP-DD Module Types\" class=\"wp-image-3281\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecee655e42824b16b812d98802fb28c9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecee655e42824b16b812d98802fb28c9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecee655e42824b16b812d98802fb28c9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecee655e42824b16b812d98802fb28c9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ecee655e42824b16b812d98802fb28c9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea3ng tra c\u1ee9u nhanh<\/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 m\u00f4-\u0111un<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng \u0111i\u1ec3n h\u00ecnh (ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea7u n\u1ed1i \u0111i\u1ec3n h\u00ecnh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>S\u1ed1 l\u01b0\u1ee3ng lane \/ t\u1ed5ng h\u1ee3p<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>400GBASE-SR8<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110a mode (OM3\/OM4\/OM5)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~100 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MPO\/MTP (song song)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8 \u00d7 50G (song song)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft ng\u1eafn trong t\u1ee7, gi\u1eefa c\u00e1c l\u1edbp leaf\/spine<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>400GBASE-DR4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~500 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MPO\/MTP ho\u1eb7c nhi\u1ec1u \u0111\u1ea7u n\u1ed1i LC (theo nh\u00e0 cung c\u1ea5p)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u00c1nh x\u1ea1 4 \u00d7 100G ho\u1eb7c 8 \u00d7 50G (ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c t\u1ee7 trong trung t\u00e2m d\u1eef li\u1ec7u, t\u1eadp h\u1ee3p khu v\u1ef1c khu\u00f4n vi\u00ean<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>400GBASE-FR4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~2 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC (th\u01b0\u1eddng duplex tr\u00ean m\u1ed7i k\u00eanh ho\u1eb7c MPO)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 (t\u1ed5ng h\u1ee3p con) \u2014 \u00e1nh x\u1ea1 PHY theo ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft \u0111\u00f4 th\u1ecb, li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u d\u00e0i h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>400GBASE-LR4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~10 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC (duplex \/ WDM)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u03bb WDM ho\u1eb7c t\u1ed5ng h\u1ee3p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u00f9ng l\u00e2n c\u1eadn \u0111\u00f4 th\u1ecb, t\u1eadp h\u1ee3p khu v\u1ef1c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>800GBASE-DR8 \/ FR8<\/strong> (\u0111ang ph\u00e1t tri\u1ec3n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c bi\u1ebfn th\u1ec3 s\u1ee3i \u0111\u01a1n mode (SMF) \/ \u0111a mode (MMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DR8: kho\u1ea3ng c\u00e1ch ng\u1eafn\u2013trung b\u00ecnh t\u01b0\u01a1ng t\u1ef1; FR8: kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MPO \/ LC (ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8 \u00d7 100G ho\u1eb7c 16 \u00d7 50G (ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n t\u1ea3i kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn (hyperscale), m\u1ea1ng l\u01b0\u1edbi m\u1eadt \u0111\u1ed9 cao trong t\u01b0\u01a1ng lai<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Note:<\/strong> C\u00e1c gi\u00e1 tr\u1ecb ph\u1ea1m vi n\u00eau tr\u00ean l\u00e0 gi\u00e1 tr\u1ecb l\u1eadp k\u1ebf ho\u1ea1ch \u0111i\u1ec3n h\u00ecnh. Ph\u1ea1m vi li\u00ean k\u1ebft th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o c\u00f4ng su\u1ea5t quang \u0111\u1ea7u ra (Tx) c\u1ee7a nh\u00e0 cung c\u1ea5p, \u0111\u1ed9 nh\u1ea1y b\u1ed9 thu, lo\u1ea1i s\u1ee3i quang, t\u1ed5n hao \u0111\u1ea7u n\u1ed1i\/th\u00e1p gh\u00e9p v\u00e0 m\u00e3 h\u00f3a s\u1eeda l\u1ed7i (FEC) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Lu\u00f4n ki\u1ec3m tra b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n ng\u00e2n s\u00e1ch li\u00ean k\u1ebft cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >400GBASE-SR8<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111a mode (MMF)<\/p><\/li><li><p>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li><li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng \u0111\u1ea7u n\u1ed1i MPO\/MTP<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/470377.htm\">400GBASE-DR4<\/a><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/li><li><p>L\u00ean \u0111\u1ebfn kho\u1ea3ng 500 m\u00e9t<\/p><\/li><li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ki\u1ebfn tr\u00fac spine-leaf quy m\u00f4 l\u1edbn<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472000.htm\">400GBASE-FR4<\/a><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>What Does SFP Stand For?<\/p><\/li><li><p>L\u00ean \u0111\u1ebfn kho\u1ea3ng 2 kil\u00f4m\u00e9t<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 WDM v\u1edbi \u0111\u1ea7u n\u1ed1i LC duplex<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">400GBASE-LR4<\/a><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>What Does SFP Stand For?<\/p><\/li><li><p>L\u00ean \u0111\u1ebfn kho\u1ea3ng 10 kil\u00f4m\u00e9t<\/p><\/li><li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c li\u00ean k\u1ebft t\u1ed5ng h\u1ee3p trong m\u1ea1ng \u0111\u00f4 th\u1ecb ho\u1eb7c khu\u00f4n vi\u00ean tr\u01b0\u1eddng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c bi\u1ebfn th\u1ec3 800G m\u1edbi n\u1ed5i<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>800GBASE-DR8<\/p><\/li><li><p>800GBASE-FR8<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ti\u00eau chu\u1ea9n m\u1edbi n\u1ed5i n\u00e0y m\u1edf r\u1ed9ng kh\u1ea3 n\u0103ng c\u1ee7a m\u00f4-\u0111un 800G b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 k\u00eanh PAM4 cao h\u01a1n, d\u00f9 y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n n\u0103ng v\u00e0 t\u1ea3n nhi\u1ec7t v\u1eabn l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt then ch\u1ed1t c\u1ea7n xem x\u00e9t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>QSFP-DD so v\u1edbi QSFP28 so v\u1edbi OSFP \u2014 \u0110i\u1ec7n n\u0103ng, T\u1ea3n nhi\u1ec7t v\u00e0 Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n n\u00e0y so s\u00e1nh ba h\u1ec7 sinh th\u00e1i module c\u1eafm r\u1eddi t\u1ed1c \u0111\u1ed9 cao ph\u1ed5 bi\u1ebfn, t\u00f3m t\u1eaft h\u1ec7 qu\u1ea3 v\u1ec1 \u0111i\u1ec7n n\u0103ng\/t\u1ea3n nhi\u1ec7t khi chuy\u1ec3n sang QSFP-DD\/800G, v\u00e0 li\u1ec7t k\u00ea c\u00e1c r\u00e0ng bu\u1ed9c t\u01b0\u01a1ng th\u00edch c\u1ee5 th\u1ec3 m\u00e0 k\u1ef9 s\u01b0 ph\u1ea3i x\u00e1c minh tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/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\/fc5b4b9c7d4441f0b2df6d45bb7bc777.jpg\" alt=\"QSFP-DD vs. QSFP28 vs. OSFP \u2014 Power, Thermal, and Backward-compatibility\" class=\"wp-image-3282\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc5b4b9c7d4441f0b2df6d45bb7bc777.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc5b4b9c7d4441f0b2df6d45bb7bc777-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc5b4b9c7d4441f0b2df6d45bb7bc777-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc5b4b9c7d4441f0b2df6d45bb7bc777-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc5b4b9c7d4441f0b2df6d45bb7bc777-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng \u2014 Ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh tr\u00ean m\u1ed7i m\u00f4-\u0111un<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(s\u1eed d\u1ee5ng th\u00f4ng s\u1ed1 \u0111i\u1ec7n n\u0103ng t\u1ed1i \u0111a do nh\u00e0 cung c\u1ea5p \u0111\u01b0a ra \u0111\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch cu\u1ed1i c\u00f9ng v\u1ec1 \u0111i\u1ec7n n\u0103ng\/b\u1ed9 ngu\u1ed3n; \u0111\u00e2y l\u00e0 c\u00e1c ph\u1ea1m vi s\u1ea3n xu\u1ea5t \u0111i\u1ec3n h\u00ecnh d\u00f9ng cho l\u1eadp k\u1ebf ho\u1ea1ch dung l\u01b0\u1ee3ng s\u01a1 b\u1ed9)<\/em><\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i m\u00f4-\u0111un<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 \u0111i\u1ec3n h\u00ecnh (tr\u00ean m\u1ed7i m\u00f4-\u0111un)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>QSFP28 (100G)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>3,5\u20134,5 W<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>QSFP-DD (400G)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>~10\u201314 W<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>QSFP-DD (800G, giai \u0111o\u1ea1n \u0111\u1ea7u)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>~16\u201320 W<\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa k\u1ef9 thu\u1eadt:<\/strong> lu\u00f4n thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng \u0111i\u1ec7n n\u0103ng v\u00e0 t\u1ea3n nhi\u1ec7t cho khung m\u00e1y \u0111\u1ec3 \u0111\u00e1p \u1ee9ng <strong>tr\u01b0\u1eddng h\u1ee3p x\u1ea5u nh\u1ea5t<\/strong> \u0111i\u1ec7n n\u0103ng c\u1ee7a m\u00f4-\u0111un (gi\u00e1 tr\u1ecb t\u1ed1i \u0111a do nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh), t\u1ea3i \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng qu\u00e1 t\u1ea3i t\u1ea1m th\u1eddi (kh\u1edfi \u0111\u1ed9ng\/h\u1ec7 th\u1ed1ng \u0111\u1ea1t l\u01b0u l\u01b0\u1ee3ng \u0111\u1ec9nh).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u1ea2nh h\u01b0\u1edfng k\u1ef9 thu\u1eadt th\u1ef1c t\u1ebf do \u0111i\u1ec7n n\u0103ng tr\u00ean m\u1ed7i c\u1ed5ng t\u0103ng cao<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u01b0\u1edbng d\u00f2ng kh\u00ed l\u00e0m m\u00e1t c\u1ee7a switch tr\u1edf n\u00ean quan tr\u1ecdng.<\/strong> C\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau s\u1eed d\u1ee5ng h\u01b0\u1edbng d\u00f2ng kh\u00ed t\u1eeb tr\u01b0\u1edbc ra sau ho\u1eb7c t\u1eeb sau ra tr\u01b0\u1edbc; hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t m\u00f4-\u0111un ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c kh\u1edbp \u0111\u01b0\u1eddng d\u1eabn t\u1ea3n nhi\u1ec7t c\u1ee7a m\u00f4-\u0111un v\u1edbi h\u01b0\u1edbng d\u00f2ng kh\u00ed c\u1ee7a khung m\u00e1y.<\/p><\/li><li><p><strong>Chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 tr\u00ed c\u1ed5ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 do nhi\u1ec7t.<\/strong> T\u1eadp trung c\u00e1c m\u00f4-\u0111un ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng cao \u1edf c\u00e1c c\u1ed5ng li\u1ec1n k\u1ec1 c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng v\u00e0 k\u00edch ho\u1ea1t gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 do nhi\u1ec7t; c\u1ea7n ph\u00e2n b\u1ed5 c\u00e1c c\u1ed5ng ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng cao ho\u1eb7c cung c\u1ea5p th\u00eam kh\u1ea3 n\u0103ng l\u00e0m m\u00e1t.<\/p><\/li><li><p><strong>Vi\u1ec7c gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 qua DOM l\u00e0 b\u1eaft bu\u1ed9c.<\/strong> T\u00edch h\u1ee3p d\u1eef li\u1ec7u telemetry DOM\/DDM v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u1ea1ng (NMS) \u0111\u1ec3 c\u1ea3nh b\u00e1o ch\u1ee7 \u0111\u1ed9ng v\u00e0 ph\u00e2n t\u00edch xu h\u01b0\u1edbng; ng\u01b0\u1ee1ng nhi\u1ec7t \u0111\u1ed9 c\u1ea7n k\u00edch ho\u1ea1t c\u00e1c bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u t\u1ef1 \u0111\u1ed9ng (gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9, thay \u0111\u1ed5i c\u1ea5p \u0111\u1ed9 qu\u1ea1t ho\u1eb7c thay th\u1ebf m\u00f4-\u0111un).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c h\u00e0nh \u0111\u1ed9ng th\u1ef1c t\u1ebf<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>S\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb <strong>\u0111i\u1ec7n n\u0103ng t\u1ed1i \u0111a do nh\u00e0 cung c\u1ea5p quy \u0111\u1ecbnh<\/strong> \u0111\u1ec3 l\u1eadp ng\u00e2n s\u00e1ch \u0111i\u1ec7n n\u0103ng tr\u00ean m\u1ed7i c\u1ed5ng v\u00e0 to\u00e0n b\u1ed9 khung m\u00e1y.<\/p><\/li><li><p>Ch\u1ea1y th\u1eed nghi\u1ec7m bu\u1ed3ng nhi\u1ec7t v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un l\u1eafp \u0111\u1ea7y \u1edf \u0111i\u1ec1u ki\u1ec7n x\u1ea5u nh\u1ea5t.<\/p><\/li><li><p>X\u00e1c th\u1ef1c \u0111\u01b0\u1eddng cong \u0111i\u1ec1u khi\u1ec3n qu\u1ea1t d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng x\u1ea5u nh\u1ea5t v\u00e0 t\u1ea3i \u1ed5n \u0111\u1ecbnh.<\/p><\/li><li><p>Tri\u1ec3n khai c\u00e1c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n gi\u00e1m s\u00e1t t\u1eeb xa (telemetry) nh\u1eb1m li\u00ean h\u1ec7 d\u1eef li\u1ec7u v\u1ec1 c\u00f4ng su\u1ea5t c\u1ed5ng, nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u1ed1 l\u01b0\u1ee3ng l\u1ed7i.<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c \u2014 Nh\u1eefng g\u00ec ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c v\u00e0 nh\u1eefng g\u00ec kh\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c khe c\u1eafm QSFP-DD l\u00e0 <strong>v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea5p nh\u1eadn c\u00e1c d\u1ea1ng module QSFP c\u0169 h\u01a1n (QSFP+ v\u00e0 QSFP28). Tuy nhi\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>S\u1ef1 v\u1eeba kh\u00edt v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc \u2260 t\u00ednh t\u01b0\u01a1ng th\u00edch ch\u1ee9c n\u0103ng.<\/strong> M\u1ed9t module QSFP28 \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o khe QSFP-DD s\u1ebd v\u1eeba kh\u00edt v\u1ec1 m\u1eb7t v\u1eadt l\u00fd, nh\u01b0ng ASIC ch\u1ee7, m\u1ea1ch in (PCB) v\u00e0 firmware ph\u1ea3i h\u1ed7 tr\u1ee3 s\u01a1 \u0111\u1ed3 \u00e1nh x\u1ea1 \u0111i\u1ec7n v\u00e0 c\u01a1 ch\u1ebf th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 c\u1ee7a module c\u0169 h\u01a1n.<\/p><\/li><li><p><strong>C\u00e1c module t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c ch\u1ec9 ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 g\u1ed1c c\u1ee7a ch\u00fang.<\/strong> M\u1ed9t module QSFP28 kh\u00f4ng th\u1ec3 \u0111\u1ed9t ng\u1ed9t ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 400G khi \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o khe QSFP-DD.<\/p><\/li><li><p><strong>S\u01a1 \u0111\u1ed3 \u00e1nh x\u1ea1 \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n (electrical lane mapping) kh\u00e1c nhau.<\/strong> Logic chia nh\u00e1nh (breakout), th\u1ee9 t\u1ef1\/th\u1ef1c c\u1ef1c (polarity) c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng d\u1eabn v\u00e0 c\u1ea5u h\u00ecnh SerDes ph\u1ea3i \u0111\u01b0\u1ee3c ASIC chuy\u1ec3n m\u1ea1ch v\u00e0 firmware h\u1ed7 tr\u1ee3 \u0111\u1ec3 v\u1eadn h\u00e0nh \u0111\u00fang.<\/p><\/li><li><p><strong>H\u1ed3 s\u01a1 ti\u00eau th\u1ee5 \u0111i\u1ec7n v\u00e0 l\u00e0m m\u00e1t kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3.<\/strong> D\u1ef1 ki\u1ebfn nhu c\u1ea7u l\u00e0m m\u00e1t tr\u00ean m\u1ed7i c\u1ed5ng cao h\u01a1n \u0111\u1ed1i v\u1edbi QSFP-DD\/800G; c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u1ec1 c\u00f4ng su\u1ea5t c\u1ee7a QSFP28 c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n hi\u1ec7u l\u1ef1c khi tr\u1ed9n l\u1eabn v\u1edbi QSFP-DD trong c\u00f9ng m\u1ed9t khung (chassis).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Danh s\u00e1ch ki\u1ec3m tra tr\u01b0\u1edbc khi tr\u1ed9n c\u00e1c lo\u1ea1i module<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn ASIC ch\u1ee7 v\u00e0 firmware h\u1ed7 tr\u1ee3 c\u00e1c d\u1ea1ng module k\u1ebft h\u1ee3p v\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 chia nh\u00e1nh (breakout modes).<\/p><\/li><li><p>Ki\u1ec3m tra l\u1ea1i vi\u1ec7c b\u1ed1 tr\u00ed m\u1ea1ch in (board routing) v\u00e0 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n c\u00f3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u1ea3 hai lo\u1ea1i module hay kh\u00f4ng.<\/p><\/li><li><p>Ki\u1ec3m tra thao t\u00e1c c\u1eafm\/r\u00fat c\u01a1 h\u1ecdc v\u00e0 b\u00e1o c\u00e1o d\u1eef li\u1ec7u gi\u00e1m s\u00e1t quang (DOM) cho t\u1eebng lo\u1ea1i module \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p><\/li><li><p>C\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u1ea1ng (NMS) \u0111\u1ec3 nh\u1eadn di\u1ec7n v\u00e0 x\u1eed l\u00fd c\u00e1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">DOM<\/a> thanh ghi v\u00e0 ng\u01b0\u1ee1ng kh\u00e1c nhau.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >So s\u00e1nh nhanh: QSFP28 so v\u1edbi QSFP-DD so v\u1edbi OSFP<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP-DD<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>OSFP<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a (th\u00f4ng th\u01b0\u1eddng)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>400G \/ 800G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>800G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ed1 \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng \u00e1p d\u1ee5ng (l\u1ed7i th\u1eddi)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc: c\u00f3; V\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng: c\u00f3 \u0111i\u1ec1u ki\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng (b\u1ea3n v\u1ebd c\u01a1 h\u1ecdc kh\u00e1c nhau)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ea1n ch\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>H\u1ec7 sinh th\u00e1i ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ecb tr\u01b0\u1eddng r\u1ed9ng r\u00e3i \u0111\u00e3 tr\u01b0\u1edfng th\u00e0nh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn (hyperscale) v\u00e0 ph\u1ed5 th\u00f4ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn (c\u00e1c n\u1ec1n t\u1ea3ng ti\u00eau t\u1ed1n nhi\u1ec1u \u0111i\u1ec7n n\u0103ng)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Di\u1ec5n gi\u1ea3i:<\/strong> QSFP-DD \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng th\u1ef1c ti\u1ec5n \u2014 n\u00f3 mang l\u1ea1i m\u1eadt \u0111\u1ed9 cao h\u01a1n trong khi v\u1eabn duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc cho ph\u1ea7n l\u1edbn h\u1ec7 sinh th\u00e1i QSFP. OSFP cung c\u1ea5p d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t cao h\u01a1n (\u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 nh\u00e0 v\u1eadn h\u00e0nh hyperscale \u01b0a chu\u1ed9ng), nh\u01b0ng y\u00eau c\u1ea7u khe c\u1eafm v\u00e0 kh\u00f4ng gian m\u1eb7t tr\u01b0\u1edbc (front-panel real estate) kh\u00e1c bi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >K\u1ebft lu\u1eadn k\u1ef9 thu\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD l\u00e0 con \u0111\u01b0\u1eddng th\u1ef1c ti\u1ec5n nh\u1ea5t \u0111\u1ec3 nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 400G m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i c\u01a1 h\u1ecdc to\u00e0n b\u1ed9. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y l\u00e0m gia t\u0103ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n, c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t m\u00e0<br> <strong>ph\u1ea3i<br><\/strong> \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c \u1edf c\u1ea5p \u0111\u1ed9 n\u1ec1n t\u1ea3ng:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1eadp k\u1ebf ho\u1ea1ch cho<br> <strong>m\u1ee9c c\u00f4ng su\u1ea5t cao nh\u1ea5t<br><\/strong> v\u00e0 t\u1ea3i nhi\u1ec7t cao nh\u1ea5t, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh.<br>.<\/p><\/li><li><p>Coi t\u00ednh t\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc ch\u1ec9 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u2014 x\u00e1c th\u1ef1c t\u00ednh<br> <strong>t\u01b0\u01a1ng th\u00edch ch\u1ee9c n\u0103ng<br><\/strong> (ASIC, firmware, \u00e1nh x\u1ea1 k\u00eanh).<br>.<\/p><\/li><li><p>T\u00edch h\u1ee3p d\u1eef li\u1ec7u gi\u00e1m s\u00e1t quang h\u1ecdc (DOM) v\u00e0 c\u01a1 ch\u1ebf gi\u1ea3m nhi\u1ec7t t\u1ef1 \u0111\u1ed9ng v\u00e0o v\u1eadn h\u00e0nh.<br>.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n mu\u1ed1n, t\u00f4i c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t v\u00ed d\u1ee5 minh h\u1ecda chi ti\u1ebft v\u1ec1 ng\u00e2n s\u00e1ch nhi\u1ec7t (c\u00f4ng su\u1ea5t tr\u00ean m\u1ed7i khung v\u00e0 \u0111\u1eb7c tuy\u1ebfn qu\u1ea1t) s\u1eed d\u1ee5ng c\u1ea5u h\u00ecnh QSFP-DD 32\u00d7400G, ho\u1eb7c t\u1ea1o danh s\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u1ec3 b\u1ea1n chuy\u1ec3n cho \u0111\u1ed9i ki\u1ec3m \u0111\u1ecbnh ph\u1ea7n c\u1ee9ng. \u0110i\u1ec1u n\u00e0o trong hai l\u1ef1a ch\u1ecdn n\u00e0y s\u1ebd h\u1eefu \u00edch h\u01a1n v\u1edbi b\u1ea1n ti\u1ebfp theo?<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>C\u00e1c k\u1ecbch b\u1ea3n tri\u1ec3n khai QSFP-DD \u0111i\u1ec3n h\u00ecnh<br><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c tri\u1ec3n khai t\u1ea1i nh\u1eefng n\u01a1i m\u00e0<br> <strong>m\u1eadt \u0111\u1ed9 c\u1ed5ng, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<br><\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t, k\u00e8m b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt th\u1ef1c ti\u1ec5n thay v\u00ec nh\u1eefng tuy\u00ean b\u1ed1 chung chung mang t\u00ednh ti\u1ebfp th\u1ecb.<br>.<\/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\/6f678a7d06ad4e6ba0bce3da1e30d233.jpg\" alt=\"Typical QSFP-DD Deployment Scenarios\" class=\"wp-image-3283\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6f678a7d06ad4e6ba0bce3da1e30d233.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6f678a7d06ad4e6ba0bce3da1e30d233-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6f678a7d06ad4e6ba0bce3da1e30d233-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6f678a7d06ad4e6ba0bce3da1e30d233-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6f678a7d06ad4e6ba0bce3da1e30d233-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 B\u1ed9 chuy\u1ec3n m\u1ea1ch spine trong trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD l\u00e0 d\u1ea1ng h\u00ecnh chu\u1ea9n th\u1ed1ng tr\u1ecb cho l\u1edbp spine 400G trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 \u0111\u00e1m m\u00e2y l\u1edbn.<br>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p m\u1edf r\u1ed9ng \u0111\u00e1ng k\u1ec3 b\u0103ng th\u00f4ng east-west gi\u1eefa c\u00e1c t\u1ea7ng leaf m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng t\u1ee7 rack<br><\/p><\/li><li><p>Ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi c\u00e1c chip ASIC chuy\u1ec3n m\u1ea1ch c\u00f3 t\u1ed1c \u0111\u1ed9 \u226512,8 Tbps v\u00e0 25,6 Tbps<br><\/p><\/li><li><p>Th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi c\u00e1c module quang 400GBASE-DR4 ho\u1eb7c FR4 t\u00f9y thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch m\u1ea1ng<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do QSFP-DD ph\u00f9 h\u1ee3p:<br><\/strong> m\u1eadt \u0111\u1ed9 c\u1ed5ng cao, h\u1ec7 sinh th\u00e1i ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 t\u00ednh li\u00ean t\u1ee5c c\u01a1 h\u1ecdc v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng d\u1ef1a tr\u00ean QSFP gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c tri\u1ec3n khai quy m\u00f4 l\u1edbn v\u00e0 qu\u1ea3n l\u00fd linh ki\u1ec7n d\u1ef1 ph\u00f2ng.<br>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 B\u1ed9 chuy\u1ec3n m\u1ea1ch leaf c\u00f3 s\u1ed1 c\u1ed5ng cao (32 \u00d7 400G tr\u1edf l\u00ean)<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch leaf hi\u1ec7n \u0111\u1ea1i ng\u00e0y c\u00e0ng s\u1eed d\u1ee5ng<br> <strong>m\u1eb7t tr\u01b0\u1edbc d\u1ea1ng QSFP-DD c\u00f3 s\u1ed1 c\u1ed5ng cao<br><\/strong> (v\u00ed d\u1ee5: thi\u1ebft k\u1ebf 32 \u00d7 400G ho\u1eb7c 64 \u00d7 400G).<br>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb leaf c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t c\u00f9ng dung l\u01b0\u1ee3ng m\u1ea1ng<br><\/p><\/li><li><p>\u0110\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c \u0111i c\u00e1p v\u00e0 gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p trong v\u1eadn h\u00e0nh<br><\/p><\/li><li><p>H\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 ph\u00e2n nh\u00e1nh (breakout) (v\u00ed d\u1ee5: 400G \u2192 4 \u00d7 100G) khi ASIC v\u00e0 firmware cho ph\u00e9p<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa thi\u1ebft k\u1ebf:<\/strong> Vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch m\u1eadt \u0111\u1ed9 c\u00f4ng su\u1ea5t v\u00e0 lu\u1ed3ng kh\u00ed l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu, \u0111\u1eb7c bi\u1ec7t khi nhi\u1ec1u c\u1ed5ng li\u1ec1n k\u1ec1 c\u00f9ng \u0111\u01b0\u1ee3c l\u1eafp module c\u00f3 c\u00f4ng su\u1ea5t \u226512 W.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 C\u00e1c c\u1ee5m AI \/ HPC y\u00eau c\u1ea7u b\u0103ng th\u00f4ng ngang (east-west) d\u00e0y \u0111\u1eb7c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e0o t\u1ea1o AI v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\">HPC<\/a> c\u00e1c kh\u1ed1i c\u00f4ng vi\u1ec7c t\u1ea1o ra l\u01b0u l\u01b0\u1ee3ng ngang (east-west) c\u1ef1c cao, khi\u1ebfn QSFP-DD tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn t\u1ef1 nhi\u00ean.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 c\u00e1c m\u1ea1ng l\u01b0\u1edbi b\u0103ng th\u00f4ng cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p cho c\u00e1c c\u1ee5m GPU\/b\u1ed9 t\u0103ng t\u1ed1c<\/p><\/li><li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng c\u00e1c b\u1ed9 quang h\u1ecdc DR4 ho\u1eb7c SR8 t\u1ea7m ng\u1eafn b\u00ean trong c\u00e1c c\u1ee5m AI<\/p><\/li><li><p>Cung c\u1ea5p l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p l\u00ean 800G m\u00e0 kh\u00f4ng thay \u0111\u1ed5i y\u1ebfu t\u1ed1 h\u00ecnh h\u1ecdc (mechanical form factor)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd v\u1eadn h\u00e0nh:<\/strong> bi\u00ean nhi\u1ec7t \u0111\u1ed9 ch\u1eadt h\u1eb9p v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng cao li\u00ean t\u1ee5c \u0111\u00f2i h\u1ecfi gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 DOM ch\u1ee7 \u0111\u1ed9ng v\u00e0 x\u00e1c th\u1ef1c l\u00e0m m\u00e1t nghi\u00eam ng\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 T\u00edch h\u1ee3p l\u00f5i v\u1edbi b\u1ed9 quang h\u1ecdc DR4 \/ FR4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u1edf l\u1edbp l\u00f5i ho\u1eb7c l\u1edbp t\u00edch h\u1ee3p, n\u01a1i c\u00e1c k\u1ebft n\u1ed1i 400G h\u1ee3p nh\u1ea5t nhi\u1ec1u k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>DR4 (~500 m) ph\u00f9 h\u1ee3p v\u1edbi khu\u00f4n vi\u00ean quy m\u00f4 l\u1edbn ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u \u0111a t\u00f2a nh\u00e0<\/p><\/li><li><p>FR4 (~2 km) cho ph\u00e9p t\u00edch h\u1ee3p \u1edf ph\u1ea1m vi \u0111\u00f4 th\u1ecb li\u1ec1n k\u1ec1 m\u00e0 kh\u00f4ng c\u1ea7n b\u1ed9 quang h\u1ecdc \u0111\u1ed3ng pha (coherent optics)<\/p><\/li><li><p>Gi\u1ea3m s\u1ed1 s\u1ee3i c\u00e1p quang v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ed5ng so v\u1edbi nhi\u1ec1u k\u1ebft n\u1ed1i 100G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eb9o l\u1eadp k\u1ebf ho\u1ea1ch:<\/strong> lu\u00f4n x\u00e1c th\u1ef1c ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n (link budgets) v\u00e0 y\u00eau c\u1ea7u FEC, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi FR4 v\u00e0 c\u00e1c kho\u1ea3ng c\u00e1ch xa h\u01a1n, \u0111\u1ec3 tr\u00e1nh c\u00e1c k\u1ebft n\u1ed1i \u1edf ng\u01b0\u1ee1ng gi\u1edbi h\u1ea1n khi tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 T\u00f3m t\u1eaft tri\u1ec3n khai (Khi n\u00e0o n\u00ean d\u00f9ng QSFP-DD)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u0103ng th\u00f4ng 400G m\u1ed7i c\u1ed5ng hi\u1ec7n t\u1ea1i, k\u00e8m l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p l\u00ean 800G<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 m\u1eb7t tr\u01b0\u1edbc cao m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i y\u1ebfu t\u1ed1 h\u00ecnh h\u1ecdc<\/p><\/li><li><p>B\u1ed9 quang h\u1ecdc ti\u00eau chu\u1ea9n h\u00f3a tr\u00ean to\u00e0n b\u1ed9 c\u00e1c l\u1edbp spine, leaf v\u00e0 t\u00edch h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng m\u1eadt \u0111\u1ed9 th\u1ea5p h\u01a1n ho\u1eb7c b\u1ecb gi\u1edbi h\u1ea1n v\u1ec1 c\u00f4ng su\u1ea5t, QSFP28 c\u00f3 th\u1ec3 v\u1eabn \u0111\u1ee7 d\u00f9ng. \u0110\u1ed1i v\u1edbi c\u00e1c thi\u1ebft k\u1ebf si\u00eau quy m\u00f4 (hyperscale) ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t c\u1ef1c cao, OSFP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t \u2014 nh\u01b0ng QSFP-DD v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn c\u00e2n b\u1eb1ng nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong to\u00e0n ng\u00e0nh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>C\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t khi l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai QSFP-DD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai c\u00e1c module QSFP-DD kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 quy\u1ebft \u0111\u1ecbnh v\u1ec1 t\u1ed1c \u0111\u1ed9 \u2014 m\u00e0 l\u00e0 m\u1ed9t b\u00e0i to\u00e1n k\u1ef9 thu\u1eadt c\u1ea5p h\u1ec7 th\u1ed1ng, bao g\u1ed3m quang h\u1ecdc, kh\u1ea3 n\u0103ng c\u1ee7a ASIC, c\u00f4ng su\u1ea5t, thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t v\u00e0 kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh l\u00e2u d\u00e0i. C\u00e1c th\u1ef1c ti\u1ec5n d\u01b0\u1edbi \u0111\u00e2y ph\u1ea3n \u00e1nh nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e3 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf t\u1ea1i trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u00e1c c\u1ee5m AI\/HPC.<\/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\/b03664ba26524d55bb331989b63823b4.jpg\" alt=\"QSFP-DD Modules Selection and Deployment\" class=\"wp-image-3284\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b03664ba26524d55bb331989b63823b4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b03664ba26524d55bb331989b63823b4-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b03664ba26524d55bb331989b63823b4-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b03664ba26524d55bb331989b63823b4-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b03664ba26524d55bb331989b63823b4-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u01b0\u1eddng truy\u1ec1n, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb module<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n ch\u1ecdn ti\u00eau chu\u1ea9n quang h\u1ecdc d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch v\u00e0 h\u1ea1 t\u1ea7ng c\u00e1p quang, sau \u0111\u00f3 ch\u1ecdn module <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472197.htm\">QSFP-DD t\u01b0\u01a1ng th\u00edch<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u2264100 m, s\u1ee3i quang \u0111a mode (MMF) kh\u1ea3 d\u1ee5ng:<\/strong> 400GBASE-SR8<\/p><\/li><li><p><strong>\u2264500 m, s\u1ee3i quang \u0111\u01a1n mode (SMF):<\/strong> 400GBASE-DR4<\/p><\/li><li><p><strong>\u22642 km, s\u1ee3i quang \u0111\u01a1n mode (SMF):<\/strong> 400GBASE-FR4<\/p><\/li><li><p><strong>\u226410 km, s\u1ee3i quang \u0111\u01a1n mode (SMF):<\/strong> 400GBASE-LR4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong> th\u1ef1c hi\u1ec7n ng\u00e2n s\u00e1ch li\u00ean k\u1ebft ch\u00ednh th\u1ee9c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb ph\u00e1t t\u1ed1i thi\u1ec3u (Tx(min)) v\u00e0 nh\u1eadn t\u1ed1i \u0111a (Rx(max)) c\u1ee7a nh\u00e0 cung c\u1ea5p, t\u1ed5n hao \u0111\u1ea7u n\u1ed1i\/vi\u1ec7c h\u00e0n n\u1ed1i, v\u00e0 bi\u00ean d\u1ef1 ph\u00f2ng k\u1ef9 thu\u1eadt \u22652\u20133 dB.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c minh h\u1ed7 tr\u1ee3 ASIC v\u00e0 firmware c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472199.htm\">M\u00f4-\u0111un 400G<\/a> ch\u1ee9c n\u0103ng ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o kh\u1ea3 n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c nh\u1eadn c\u00e1c \u0111i\u1ec1u sau tr\u01b0\u1edbc khi mua ho\u1eb7c tri\u1ec3n khai:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 k\u00eanh \u0111i\u1ec7n \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (8 \u00d7 50G PAM4 so v\u1edbi c\u00e1c ch\u1ebf \u0111\u1ed9 k\u1ebf th\u1eeba)<\/p><\/li><li><p>C\u00e1c t\u00f9y ch\u1ecdn chia t\u00e1ch \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (v\u00ed d\u1ee5: 400G \u2192 4 \u00d7 100G)<\/p><\/li><li><p>C\u00e1c lo\u1ea1i FEC b\u1eaft bu\u1ed9c v\u00e0 m\u1eb7c \u0111\u1ecbnh<\/p><\/li><li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch thanh ghi DOM\/DDM v\u00e0 b\u00e1o c\u00e1o d\u1eef li\u1ec7u gi\u00e1m s\u00e1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u00e0i h\u1ecdc th\u1ef1c t\u1ebf:<\/strong> nhi\u1ec1u \u201cv\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch\u201d th\u1ef1c ch\u1ea5t l\u00e0 do gi\u1edbi h\u1ea1n firmware, ch\u1ee9 kh\u00f4ng ph\u1ea3i do l\u1ed7i quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Thi\u1ebft k\u1ebf cho t\u1ea3i c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 x\u1ea5u nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un QSFP-DD ho\u1ea1t \u0111\u1ed9ng \u1edf <strong>m\u1ee9c c\u00f4ng su\u1ea5t cao h\u01a1n \u0111\u00e1ng k\u1ec3<\/strong> so v\u1edbi QSFP28.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1eadp ng\u00e2n s\u00e1ch d\u1ef1a tr\u00ean <strong>c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a<\/strong>, ch\u1ee9 kh\u00f4ng ph\u1ea3i gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/p><\/li><li><p>X\u00e1c minh h\u01b0\u1edbng lu\u1ed3ng kh\u00ed (tr\u01b0\u1edbc-sau hay sau-tr\u01b0\u1edbc)<\/p><\/li><li><p>Tr\u00e1nh b\u1ed1 tr\u00ed c\u00e1c thi\u1ebft b\u1ecb quang ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao li\u1ec1n k\u1ec1 nhau<\/p><\/li><li><p>X\u00e1c nh\u1eadn \u0111\u01b0\u1eddng cong qu\u1ea1t v\u00e0 c\u1ea3nh b\u00e1o nhi\u1ec7t d\u01b0\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp k\u00e9o d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc chung:<\/strong> n\u1ebfu m\u1ed9t n\u1ec1n t\u1ea3ng \u1ed5n \u0111\u1ecbnh khi kh\u00f4ng t\u1ea3i nh\u01b0ng g\u1eb7p s\u1ef1 c\u1ed1 khi c\u00f3 t\u1ea3i, th\u00ec d\u1ef1 tr\u1eef nhi\u1ec7t kh\u00f4ng \u0111\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Coi t\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c l\u00e0 c\u00f3 \u0111i\u1ec1u ki\u1ec7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 khe c\u1eafm QSFP-DD <strong>ch\u1ea5p nh\u1eadn c\u01a1 h\u1ecdc c\u00e1c m\u00f4-\u0111un QSFP+\/QSFP28<\/strong>, nh\u01b0ng t\u00ednh t\u01b0\u01a1ng th\u00edch ch\u1ee9c n\u0103ng kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 g\u1ed1c<\/p><\/li><li><p>Vi\u1ec7c \u00e1nh x\u1ea1 k\u00eanh v\u00e0 c\u1ef1c t\u00ednh ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ed9 chuy\u1ec3n m\u1ea1ch h\u1ed7 tr\u1ee3<\/p><\/li><li><p>Vi\u1ec7c tri\u1ec3n khai h\u1ed7n h\u1ee3p y\u00eau c\u1ea7u x\u00e1c th\u1ef1c firmware c\u1ea9n th\u1eadn<\/p><\/li><li><p>Gi\u1ea3 \u0111\u1ecbnh l\u00e0m m\u00e1t kh\u00e1c nhau gi\u1eefa thi\u1ebft b\u1ecb quang 100G v\u00e0 400G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong> ki\u1ec3m tra c\u1ea5u h\u00ecnh m\u00f4-\u0111un h\u1ed7n h\u1ee3p trong m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m tr\u01b0\u1edbc khi tri\u1ec3n khai s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Chu\u1ea9n h\u00f3a thi\u1ebft b\u1ecb quang \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u1eadn h\u00e0nh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede quy m\u00f4 l\u1edbn, t\u00ednh nh\u1ea5t qu\u00e1n quan tr\u1ecdng h\u01a1n t\u00ednh linh ho\u1ea1t l\u00fd thuy\u1ebft.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng SKU m\u00f4-\u0111un tr\u00ean m\u1ed7i l\u1edbp kho\u1ea3ng c\u00e1ch<\/p><\/li><li><p>Chu\u1ea9n h\u00f3a lo\u1ea1i \u0111\u1ea7u n\u1ed1i (MPO ho\u1eb7c LC) theo t\u1eebng l\u1edbp<\/p><\/li><li><p>\u0110\u1ed3ng b\u1ed9 h\u00f3a vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p v\u1edbi h\u1ed7 tr\u1ee3, chu k\u1ef3 c\u1eadp nh\u1eadt firmware v\u00e0 \u0111\u1ed9 tin c\u1eady v\u1ec1 th\u1eddi gian giao h\u00e0ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m nhu c\u1ea7u d\u1ef1 ph\u00f2ng, th\u1eddi gian kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 sai s\u00f3t t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Coi vi\u1ec7c gi\u00e1m s\u00e1t DOM l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a v\u1eadn h\u00e0nh, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u00f9ng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1eef li\u1ec7u gi\u00e1m s\u00e1t DOM\/DDM n\u00ean \u0111\u01b0\u1ee3c theo d\u00f5i li\u00ean t\u1ee5c, ch\u1ee9 kh\u00f4ng ch\u1ec9 ki\u1ec3m tra khi x\u1ea3y ra s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Theo d\u00f5i t\u1ed1i thi\u1ec3u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/li><li><p>c\u00f4ng su\u1ea5t quang ph\u00e1t\/thu (Tx\/Rx)<\/p><\/li><li><p>\u0110i\u1ec7n \u00e1p c\u1ea5p v\u00e0 d\u00f2ng ph\u00e2n c\u1ef1c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin chi ti\u1ebft c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c:<\/strong> D\u1eef li\u1ec7u DOM theo xu h\u01b0\u1edbng th\u01b0\u1eddng ti\u1ebft l\u1ed9 suy gi\u1ea3m s\u1ee3i quang ho\u1eb7c v\u1ea5n \u0111\u1ec1 l\u00e0m m\u00e1t <strong>Nhi\u1ec1u tu\u1ea7n tr\u01b0\u1edbc khi li\u00ean k\u1ebft b\u1ecb l\u1ed7i<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1eadp k\u1ebf ho\u1ea1ch cho kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u1ec1 ph\u00eda tr\u01b0\u1edbc (400G \u2192 800G)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi tri\u1ec3n khai 400G h\u00f4m nay, c\u0169ng c\u1ea7n l\u1eadp k\u1ebf ho\u1ea1ch v\u1edbi th\u1ebf h\u1ec7 ti\u1ebfp theo trong t\u00e2m tr\u00ed.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn \u0111\u1ed9 s\u1eb5n s\u00e0ng c\u1ee7a khung k\u1eb9p v\u00e0 \u0111\u1ea7u n\u1ed1i cho c\u00e1c module c\u00f4ng su\u1ea5t cao h\u01a1n<\/p><\/li><li><p>Ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a d\u1ef1 tr\u1eef c\u00f4ng su\u1ea5t v\u00e0 lu\u1ed3ng kh\u00ed l\u00e0m m\u00e1t \u0111\u1ed1i v\u1edbi c\u00e1c module quang h\u1ecdc QSFP-DD 800G s\u01a1 k\u1ef3<\/p><\/li><li><p>Tr\u00e1nh kh\u00f3a v\u00e0o c\u00e1c module quang h\u1ecdc c\u1ea3n tr\u1edf kh\u1ea3 n\u0103ng n\u00e2ng c\u1ea5p t\u1ed1c \u0111\u1ed9 k\u00eanh trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u1ee3i th\u1ebf chi\u1ebfn l\u01b0\u1ee3c:<\/strong> <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472195.htm\">C\u00e1c module QSFP-DD 400G<\/a> Cho ph\u00e9p m\u1edf r\u1ed9ng t\u1eebng b\u01b0\u1edbc m\u00e0 kh\u00f4ng c\u1ea7n t\u00e1i thi\u1ebft k\u1ebf c\u01a1 h\u1ecdc m\u1eb7t tr\u01b0\u1edbc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Danh s\u00e1ch ki\u1ec3m tra tri\u1ec3n khai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 Ti\u00eau chu\u1ea9n quang h\u1ecdc ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 h\u1ec7 th\u1ed1ng c\u00e1p quang<\/p><\/li><li><p>\u2705 Ng\u00e2n s\u00e1ch li\u00ean k\u1ebft \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh k\u00e8m d\u1ef1 ph\u00f2ng<\/p><\/li><li><p>\u2705 T\u00ednh t\u01b0\u01a1ng th\u00edch gi\u1eefa ASIC ch\u1ee7 v\u00e0 firmware \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn<\/p><\/li><li><p>\u2705 D\u1ef1 tr\u1eef c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng \u1edf t\u1ea3i \u0111\u1ea7y<\/p><\/li><li><p>\u2705 C\u00e1c k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p module \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra<\/p><\/li><li><p>\u2705 D\u1eef li\u1ec7u gi\u00e1m s\u00e1t quang h\u1ecdc (DOM) \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u1ea1ng (NMS)<\/p><\/li><li><p>\u2705 \u0110\u00e3 xem x\u00e9t l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p l\u00ean 800G<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>400G<strong> <\/strong>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 b\u1ed9 thu ph\u00e1t quang QSFP-DD<\/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\/abf63f48159943f1b0297288f28a4659.jpg\" alt=\"400G QSFP-DD Transceiver FAQs\" class=\"wp-image-3285\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/abf63f48159943f1b0297288f28a4659.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/abf63f48159943f1b0297288f28a4659-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/abf63f48159943f1b0297288f28a4659-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/abf63f48159943f1b0297288f28a4659-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/abf63f48159943f1b0297288f28a4659-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 1: QSFP-DD l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>B\u1ed9 thu ph\u00e1t d\u1ea1ng nh\u1ecf g\u1ecdn \u2013 M\u1eadt \u0111\u1ed9 k\u00e9p (Quad Small Form-factor Pluggable \u2013 Double Density)<\/strong>, \u00e1m ch\u1ec9 s\u1ed1 l\u01b0\u1ee3ng \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n \u0111\u01b0\u1ee3c nh\u00e2n \u0111\u00f4i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 2: QSFP-DD c\u00f3 gi\u1ed1ng QSFP56-DD kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP56-DD l\u00e0 m\u1ed9t bi\u1ebfn th\u1ec3 \u0111\u1eb7t t\u00ean ban \u0111\u1ea7u. Tr\u00ean th\u1ef1c t\u1ebf, c\u1ea3 hai \u0111\u1ec1u \u0111\u1ec1 c\u1eadp \u0111\u1ebfn QSFP-DD h\u1ed7 tr\u1ee3 <strong>c\u00e1c \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n 50G PAM4<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 3: QSFP-DD c\u00f3 h\u1ed7 tr\u1ee3 800G kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. C\u00e1c module QSFP-DD 800G s\u01a1 k\u1ef3 <strong>s\u1eed d\u1ee5ng<\/strong> 8 \u00d7 100G PAM4 <strong>, nh\u01b0ng c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 c\u00f4ng su\u1ea5t v\u00e0 nhi\u1ec7t v\u1eabn c\u00f2n th\u00e1ch th\u1ee9c.<\/strong>, C\u00e2u h\u1ecfi 4: QSFP-DD c\u00f3 y\u00eau c\u1ea7u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang m\u1edbi kh\u00f4ng?.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00f4ng nh\u1ea5t thi\u1ebft. DR4 v\u00e0 FR4 t\u00e1i s\u1eed d\u1ee5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">c\u00e1p quang \u0111\u01a1n mode hi\u1ec7n c\u00f3 <strong>, d\u00f9 lo\u1ea1i \u0111\u1ea7u n\u1ed1i (MPO hay LC) c\u00f3 th\u1ec3 thay \u0111\u1ed5i.<\/strong>, C\u00e2u h\u1ecfi 5: QSFP-DD c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi m\u1ea1ng doanh nghi\u1ec7p kh\u00f4ng?.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >N\u00f3i chung l\u00e0 kh\u00f4ng. QSFP-DD nh\u1eafm v\u00e0o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 c\u00e1c n\u00fat t\u1eadp h\u1ee3p c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 vi\u1ec5n th\u00f4ng <strong>, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ea1ng truy c\u1eadp doanh nghi\u1ec7p th\u00f4ng th\u01b0\u1eddng.<\/strong>, K\u1ebft lu\u1eadn v\u00e0 khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng v\u1ec1 QSFP-DD.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u21aa\ufe0f\u00a0<\/strong>QSFP-DD \u0111\u00e3 n\u1ed5i l\u00ean nh\u01b0 l\u00e0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">d\u1ea1ng module 400G ch\u1ee7 l\u1ef1c <strong>kh\u00f4ng ch\u1ec9 v\u00ec n\u00f3 nhanh h\u01a1n QSFP28, m\u00e0 c\u00f2n v\u00ec n\u00f3 t\u1ea1o ra<\/strong> b\u01b0\u1edbc nh\u1ea3y v\u1ecdt v\u1ec1 m\u1eadt \u0111\u1ed9 b\u0103ng th\u00f4ng <strong>m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng di\u1ec7n t\u00edch m\u1eb7t tr\u01b0\u1edbc c\u1ee7a thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch. B\u1eb1ng c\u00e1ch nh\u00e2n \u0111\u00f4i giao di\u1ec7n \u0111i\u1ec7n th\u00e0nh t\u00e1m \u0111\u01b0\u1eddng d\u1eabn, QSFP-DD \u0111\u1ed3ng b\u1ed9 h\u00f3a kh\u1ea3 n\u0103ng c\u1ee7a module quang v\u1edbi s\u1ef1 gia t\u0103ng b\u0103ng th\u00f4ng c\u1ee7a ASIC chuy\u1ec3n m\u1ea1ch th\u1ebf h\u1ec7 ti\u1ebfp theo.<\/strong> without expanding switch front-panel real estate. By doubling the electrical interface to eight lanes, QSFP-DD aligns optics capability with next-generation switch ASIC bandwidth growth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1eabu v\u1eady, QSFP-DD gi\u1edbi thi\u1ec7u<br> <strong>c\u00e1c r\u00e0ng bu\u1ed9c k\u1ef9 thu\u1eadt m\u1edbi<br><\/strong>. M\u1eadt \u0111\u1ed9 \u0111\u01b0\u1eddng d\u1eabn cao h\u01a1n, t\u00edn hi\u1ec7u PAM4 v\u00e0 c\u00f4ng su\u1ea5t tr\u00ean m\u1ed7i c\u1ed5ng t\u0103ng l\u00ean l\u00e0m thay \u0111\u1ed5i c\u01a1 b\u1ea3n c\u00e1c \u01b0u ti\u00ean tri\u1ec3n khai h\u01b0\u1edbng t\u1edbi<br> <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u, thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t, \u0111\u1ed9 tr\u01b0\u1edfng th\u00e0nh c\u1ee7a firmware v\u00e0 x\u00e1c th\u1ef1c n\u1ec1n t\u1ea3ng<br><\/strong>. Coi m\u00f4-\u0111un 400G nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf tr\u1ef1c ti\u1ebfp thay v\u00ec m\u1ed9t n\u00e2ng c\u1ea5p \u1edf c\u1ea5p \u0111\u1ed9 h\u1ec7 th\u1ed1ng l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y m\u1ea5t \u1ed5n \u0111\u1ecbnh trong c\u00e1c \u0111\u1ee3t tri\u1ec3n khai \u0111\u1ea7u ti\u00ean.<br>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP-DD h\u1ed7 tr\u1ee3 400G v\u00e0 cao h\u01a1n<br><\/strong> m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng di\u1ec7n t\u00edch m\u1eb7t tr\u01b0\u1edbc<br><\/p><\/li><li><p><strong>PAM4 v\u00e0 m\u1eadt \u0111\u1ed9 \u0111\u01b0\u1eddng d\u1eabn cao h\u01a1n<br><\/strong> l\u00e0m thu h\u1eb9p bi\u00ean \u0111\u1ed9 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 t\u1ea3n nhi\u1ec7t<br><\/p><\/li><li><p><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c ch\u1ec9 mang t\u00ednh c\u01a1 h\u1ecdc<br><\/strong>, ch\u1ee9 kh\u00f4ng t\u1ef1 \u0111\u1ed9ng ho\u1ea1t \u0111\u1ed9ng<br><\/p><\/li><li><p><strong>Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 x\u00e1c th\u1ef1c<br><\/strong> l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng s\u1ea3n xu\u1ea5t<br><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0 \u0111\u00e1nh gi\u00e1 m\u00f4-\u0111un QSFP-DD n\u00ean:<br><\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>B\u1eaft \u0111\u1ea7u t\u1eeb n\u1ec1n t\u1ea3ng switch<br><\/strong>, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb b\u1ed9 quang\u2014ki\u1ec3m tra h\u1ed7 tr\u1ee3 ASIC, h\u01b0\u1edbng lu\u1ed3ng kh\u00ed v\u00e0 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<br><\/p><\/li><li><p><strong>X\u00e1c th\u1ef1c trong \u0111i\u1ec1u ki\u1ec7n x\u1ea5u nh\u1ea5t<br><\/strong>, bao g\u1ed3m vi\u1ec7c \u0111i\u1ec1n \u0111\u1ea7y \u0111\u1ee7 t\u1ea5t c\u1ea3 c\u1ed5ng v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp li\u00ean t\u1ee5c<br><\/p><\/li><li><p><strong>Chu\u1ea9n h\u00f3a ki\u1ebfn tr\u00fac b\u1ed9 quang v\u00e0 c\u00e1p<br><\/strong> nh\u1eb1m gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u1eadn h\u00e0nh<br><\/p><\/li><li><p><strong>Gi\u00e1m s\u00e1t ch\u1ee7 \u0111\u1ed9ng d\u1eef li\u1ec7u telemetry DOM<br><\/strong>, \u0111\u1eb7c bi\u1ec7t l\u00e0 nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00f4ng su\u1ea5t quang<br><\/p><\/li><li><p><strong>L\u1eadp k\u1ebf ho\u1ea1ch cho vi\u1ec7c m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai<br><\/strong>, \u0111\u1ea3m b\u1ea3o c\u00e1c quy\u1ebft \u0111\u1ecbnh 400G ng\u00e0y h\u00f4m nay s\u1ebd kh\u00f4ng h\u1ea1n ch\u1ebf l\u1ed9 tr\u00ecnh 800G.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP-DD kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t phi\u00ean b\u1ea3n QSFP nhanh h\u01a1n\u2014m\u00e0 c\u00f2n \u0111\u1ea1i di\u1ec7n cho m\u1ed9t b\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed5i c\u0103n b\u1ea3n trong chi\u1ebfn l\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 c\u1ed5ng d\u00e0nh cho trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, c\u00e1c c\u1ee5m AI v\u00e0 m\u1ea1ng c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5. Th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c \u00edt h\u01a1n v\u00e0o t\u1ed1c \u0111\u1ed9 n\u1ed5i b\u1eadt tr\u00ean ti\u00eau \u0111\u1ec1 v\u00e0 nhi\u1ec1u h\u01a1n v\u00e0o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u1edf c\u1ea5p h\u1ec7 th\u1ed1ng c\u0169ng nh\u01b0 t\u00ednh k\u1ef7 lu\u1eadt trong v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00e1m ph\u00e1 C\u00e1c Gi\u1ea3i Ph\u00e1p QSFP-DD t\u1eeb LINK-PP<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1.jpg\" alt=\" LINK-PP 400G QSFP-DD Transceiver\" class=\"wp-image-3286\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/595d3d91035047359fb2f83f161c38d1-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e0nh cho \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c <strong>QSFP-DD <\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/470377.htm\"><strong>m\u00f4-\u0111un quang 400G<\/strong><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho ki\u1ebfn tr\u00fac spine\u2013leaf, c\u00e1c c\u1ee5m AI\/HPC v\u00e0 t\u1ed5ng h\u1ee3p m\u1eadt \u0111\u1ed9 cao, h\u00e3y truy c\u1eadp trang <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong>.<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LINK-PP cung c\u1ea5p th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft, h\u01b0\u1edbng d\u1eabn v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc QSFP-DD s\u1eb5n s\u00e0ng s\u1ea3n xu\u1ea5t \u0111\u1ec3 h\u1ed7 tr\u1ee3 tri\u1ec3n khai quy m\u00f4 l\u1edbn m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Xem Th\u00eam<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp-dd-optical-transceivers-faster-connections\/\">B\u1ed9 thu ph\u00e1t quang QSFP-DD Cho Ph\u00e9p Thi\u1ebft L\u1eadp K\u1ebft N\u1ed1i T\u1ed1c \u0110\u1ed9 Cao<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/the-benefits-of-100g-sfp-dd-lr-optical-transceiver\/\">Nh\u1eefng \u01afu \u0110i\u1ec3m Khi S\u1eed D\u1ee5ng B\u1ed9 Thu Ph\u00e1t 100G SFP-DD LR<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/100g-sfp-dd-transceivers-high-density-networks\/\">N\u00e2ng Cao Hi\u1ec7u Qu\u1ea3 M\u1ea1ng M\u1eadt \u0110\u1ed9 Cao Nh\u1edd B\u1ed9 Thu Ph\u00e1t 100G SFP-DD<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/cfp-vs-qsfp28-transceivers-comparison\/\">So S\u00e1nh CFP v\u00e0 QSFP28 Trong Cu\u1ed9c Tranh Lu\u1eadn V\u1ec1 B\u1ed9 Thu Ph\u00e1t 100G<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/qsfp-dd-lr4-transceiver-400g-10km-solution\/\">LINK-PP LQD-CW400-LR4C: Gi\u1ea3i Ph\u00e1p QSFP-DD 400G Cho Kho\u1ea3ng C\u00e1ch 10 km<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>QSFP-DD l\u00e0 g\u00ec? QSFP-DD h\u1ed7 tr\u1ee3 Ethernet t\u1ed1c \u0111\u1ed9 cao v\u1edbi m\u1eadt \u0111\u1ed9 k\u00e9p (double density), kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u00e0 b\u0103ng th\u00f4ng l\u00ean t\u1edbi 800G cho trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>","protected":false},"author":1,"featured_media":3287,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[17],"class_list":["post-3288","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-400g-optical-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3288","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=3288"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3288\/revisions"}],"predecessor-version":[{"id":10778,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3288\/revisions\/10778"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3287"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}