{"id":2514,"date":"2026-04-11T00:00:00","date_gmt":"2026-04-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/cfp4-vs-qsfp28-differences-guide\/"},"modified":"2026-06-22T03:34:41","modified_gmt":"2026-06-22T03:34:41","slug":"cfp4-vs-qsfp28-differences-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/cfp4-vs-qsfp28-differences-guide","title":{"rendered":"So s\u00e1nh CFP4 v\u00e0 QSFP28: Gi\u1ea3i th\u00edch nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh trong c\u00f4ng ngh\u1ec7 quang h\u1ecdc 100G"},"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\/9ba2c6ab8d894f88a55c668788bb17c9.jpg\" alt=\"CFP4 vs. QSFP28: Key Differences Explained in 100G Optics\" class=\"wp-image-2504\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9ba2c6ab8d894f88a55c668788bb17c9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9ba2c6ab8d894f88a55c668788bb17c9-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9ba2c6ab8d894f88a55c668788bb17c9-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9ba2c6ab8d894f88a55c668788bb17c9-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9ba2c6ab8d894f88a55c668788bb17c9-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u00e1c m\u1ea1ng 100G ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng tr\u00ean to\u00e0n b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng, vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang d\u1ea1ng module thu ph\u00e1t quang \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t quy\u1ebft \u0111\u1ecbnh mang t\u00ednh then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 \u0111\u1ed9i ng\u0169 mua s\u1eafm. Trong s\u1ed1 c\u00e1c l\u1ef1a ch\u1ecdn th\u01b0\u1eddng \u0111\u01b0\u1ee3c so s\u00e1nh nh\u1ea5t, <strong>CFP4 so v\u1edbi QSFP28<\/strong> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t truy v\u1ea5n t\u00ecm ki\u1ebfm c\u00f3 \u00fd \u0111\u1ecbnh cao\u2014b\u1edfi v\u00ec c\u1ea3 hai module \u0111\u1ec1u cung c\u1ea5p hi\u1ec7u n\u0103ng 100G, nh\u01b0ng l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 tri\u1ebft l\u00fd thi\u1ebft k\u1ebf, hi\u1ec7u qu\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng t\u1ed3n t\u1ea1i l\u00e2u d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00ecn s\u01a1 qua, CFP4 v\u00e0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\">QSFP28<br><\/a> QSFP28 <strong>k\u00edch th\u01b0\u1edbc, m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng, m\u1eadt \u0111\u1ed9 c\u1ed5ng v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n tri\u1ec3n khai<\/strong>, nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y tr\u1edf n\u00ean c\u1ef1c k\u1ef3 \u1ea3nh h\u01b0\u1edfng\u2014\u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u1ed1i \u01b0u h\u00f3a kh\u00f4ng gian rack l\u00e0 nh\u1eefng \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y ch\u00ednh x\u00e1c l\u00e0 l\u00fd do v\u00ec sao c\u00e1c chuy\u00ean gia t\u00ecm ki\u1ebfm <em>\u201cCFP4 so v\u1edbi QSFP28\u201d<\/em> kh\u00f4ng ch\u1ec9 \u0111ang t\u00ecm ki\u1ebfm c\u00e1c \u0111\u1ecbnh ngh\u0129a\u2014h\u1ecd th\u1ef1c s\u1ef1 \u0111ang c\u1ed1 g\u1eafng tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi th\u1ef1c ti\u1ec5n h\u01a1n nhi\u1ec1u:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Module quang <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">100G<\/a> n\u00e0o l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n cho m\u1ea1ng c\u1ee7a t\u00f4i\u2014c\u1ea3 hi\u1ec7n t\u1ea1i l\u1eabn t\u01b0\u01a1ng lai?<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay, n\u01a1i c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y \u0111\u00f2i h\u1ecfi m\u1eadt \u0111\u1ed9 cao h\u01a1n v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i bit, QSFP28 \u0111\u00e3 nhanh ch\u00f3ng tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ed1ng tr\u1ecb. \u0110\u1ed3ng th\u1eddi, CFP4 v\u1eabn t\u1ed3n t\u1ea1i trong m\u1ed9t s\u1ed1 tri\u1ec3n khai vi\u1ec5n th\u00f4ng v\u00e0 truy\u1ec1n d\u1eabn xa c\u00f3 t\u00ednh k\u1ebf th\u1eeba, t\u1ea1o n\u00ean m\u1ed9t b\u1ed1i c\u1ea3nh chuy\u1ec3n \u0111\u1ed5i n\u01a1i c\u1ea3 hai c\u00f4ng ngh\u1ec7 c\u00f3 th\u1ec3 c\u00f9ng t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m cung c\u1ea5p cho b\u1ea1n m\u1ed9t so s\u00e1nh r\u00f5 r\u00e0ng, t\u1eadp trung v\u00e0o k\u1ef9 thu\u1eadt gi\u1eefa CFP4 v\u00e0 QSFP28, ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u tri\u1ec3n khai th\u1ef1c t\u1ebf v\u00e0 xu h\u01b0\u1edbng ng\u00e0nh. \u0110\u1ebfn cu\u1ed1i b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i gi\u1eefa CFP4 v\u00e0 QSFP28<\/p><\/li><li><p>Bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u00e2u l\u00e0 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p cho t\u1eebng d\u1ea1ng module<\/p><\/li><li><p>\u0110\u00e1nh gi\u00e1 c\u00e1c y\u1ebfu t\u1ed1 \u0111\u00e1nh \u0111\u1ed5i li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n n\u0103ng, chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/p><\/li><li><p>C\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t khu\u00f4n kh\u1ed5 ra quy\u1ebft \u0111\u1ecbnh th\u1ef1c ti\u1ec5n cho c\u00e1c n\u00e2ng c\u1ea5p ho\u1eb7c tri\u1ec3n khai m\u1edbi<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch tri\u1ec3n khai 100G m\u1edbi, t\u1ed1i \u01b0u h\u00f3a m\u1ea1ng hi\u1ec7n c\u00f3 hay c\u00e2n nh\u1eafc vi\u1ec7c di chuy\u1ec3n kh\u1ecfi CFP4, b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn t\u1ef1 tin v\u00e0 b\u1ec1n v\u1eefng v\u1ec1 m\u1eb7t t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 CFP4 v\u00e0 QSFP28 l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi so s\u00e1nh CFP4 v\u00e0 QSFP28, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u r\u00f5 t\u1eebng d\u1ea1ng module l\u00e0 g\u00ec v\u00e0 l\u00fd do c\u1ea3 hai \u0111\u1ec1u t\u1ed3n t\u1ea1i trong h\u1ec7 sinh th\u00e1i quang 100G.<\/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\/3693dcd02c1247d6b283793ba1eb5204.jpg\" alt=\"What Are CFP4 and QSFP28?\" class=\"wp-image-2505\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3693dcd02c1247d6b283793ba1eb5204.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3693dcd02c1247d6b283793ba1eb5204-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3693dcd02c1247d6b283793ba1eb5204-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3693dcd02c1247d6b283793ba1eb5204-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3693dcd02c1247d6b283793ba1eb5204-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >CFP4 l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CFP4 (B\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi d\u1ea1ng C, th\u1ebf h\u1ec7 4)<\/strong> l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n module thu ph\u00e1t quang 100G \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n nh\u01b0 m\u1ed9t phi\u00ean b\u1ea3n nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n c\u1ee7a c\u00e1c module CFP tr\u01b0\u1edbc \u0111\u00f3 (CFP\/CFP2). N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u1ee7 y\u1ebfu cho c\u00e1c \u1ee9ng d\u1ee5ng vi\u1ec5n th\u00f4ng v\u00e0 c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5, n\u01a1i y\u00eau c\u1ea7u truy\u1ec1n d\u1eabn quang hi\u1ec7u n\u0103ng cao\u2014\u0111\u1eb7c bi\u1ec7t tr\u00ean kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module CFP4 th\u01b0\u1eddng s\u1eed d\u1ee5ng ki\u1ebfn tr\u00fac 4\u00d725G, ngh\u0129a l\u00e0 k\u1ebft h\u1ee3p b\u1ed1n k\u00eanh \u0111i\u1ec7n 25 Gbps \u0111\u1ec3 \u0111\u1ea1t t\u1ed5ng b\u0103ng th\u00f4ng 100G. So v\u1edbi c\u00e1c th\u1ebf h\u1ec7 CFP tr\u01b0\u1edbc, CFP4 gi\u1ea3m \u0111\u00e1ng k\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng<\/p><\/li><li><p>Nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, d\u00f9 c\u00f3 nh\u1eefng c\u1ea3i ti\u1ebfn n\u00e0y, c\u00e1c module CFP4 v\u1eabn l\u1edbn h\u01a1n v\u00e0 ti\u00eau t\u1ed1n nhi\u1ec1u \u0111i\u1ec7n n\u0103ng h\u01a1n c\u00e1c gi\u1ea3i ph\u00e1p m\u1edbi h\u01a1n, \u0111i\u1ec1u n\u00e0y h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f3 m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >QSFP28 l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>QSFP28 (B\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi d\u1ea1ng nh\u1ecf b\u1ed1n k\u00eanh, t\u1ed1c \u0111\u1ed9 28G)<\/strong> l\u00e0 d\u1ea1ng module <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488422.htm\">thu ph\u00e1t quang 100G <\/a>th\u1ed1ng tr\u1ecb trong m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ed1ng nh\u01b0 CFP4, QSFP28 c\u0169ng s\u1eed d\u1ee5ng ki\u1ebfn tr\u00fac 4\u00d725G, nh\u01b0ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1edbi k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn h\u01a1n nhi\u1ec1u. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng\u2014nh\u01b0 switch v\u00e0 router\u2014h\u1ed7 tr\u1ee3 m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n \u0111\u00e1ng k\u1ec3, v\u1ed1n l\u00e0 y\u00eau c\u1ea7u then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module QSFP28 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<br><\/a><\/p><\/li><li><p>M\u1ea1ng l\u00f5i doanh nghi\u1ec7p<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\">\u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao<\/a> (HPC)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a ch\u00fang bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n (m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n)<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i v\u1edbi h\u1ec7 sinh th\u00e1i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao c\u1ea7n so s\u00e1nh CFP4 v\u00e0 QSFP28?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u1ea3 CFP4 v\u00e0 QSFP28 \u0111\u1ec1u cung c\u1ea5p c\u00f9ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp-data-rate-explained-40g-100g-and-compatibility\/\">100G<\/a>, v\u00e0 c\u1ea3 hai \u0111\u1ec1u d\u1ef1a tr\u00ean c\u1ea5u tr\u00fac k\u00eanh t\u01b0\u01a1ng t\u1ef1. V\u00ec v\u1eady, m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean, nhi\u1ec1u k\u1ef9 s\u01b0 \u0111\u1eb7t c\u00e2u h\u1ecfi:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>N\u1ebfu hi\u1ec7u n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, th\u00ec \u0111i\u1ec1u g\u00ec th\u1ef1c s\u1ef1 l\u00e0m n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang?<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf <strong>hi\u1ec7u qu\u1ea3, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 b\u1ed1i c\u1ea3nh tri\u1ec3n khai.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi d\u00f9ng so s\u00e1nh CFP4 v\u00e0 QSFP28 v\u00ec h\u1ecd c\u1ea7n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f3 n\u00ean ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CFP4 hi\u1ec7n c\u00f3 hay kh\u00f4ng<\/p><\/li><li><p>Hay chuy\u1ec3n sang QSFP28 \u0111\u1ec3 \u0111\u1ea1t m\u1eadt \u0111\u1ed9 cao h\u01a1n v\u00e0 chi ph\u00ed tr\u00ean m\u1ed7i bit th\u1ea5p h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i c\u00e1ch kh\u00e1c, \u0111\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ph\u00e9p so s\u00e1nh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt\u2014m\u00e0 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c v\u1ec1 thi\u1ebft k\u1ebf m\u1ea1ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ec1n v\u1eefng trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1c kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i theo t\u1eebng kh\u00eda c\u1ea1nh, gi\u00fap b\u1ea1n nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh d\u1ea1ng module n\u00e0o ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 CFP4 so v\u1edbi QSFP28: C\u00e1c kh\u00e1c bi\u1ec7t ch\u00ednh trong c\u00e1i nh\u00ecn t\u1ed5ng quan<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1nh gi\u00e1 <strong>CFP4 so v\u1edbi QSFP28<\/strong>, nh\u1eefng kh\u00e1c bi\u1ec7t quan tr\u1ecdng nh\u1ea5t n\u1eb1m \u1edf thi\u1ebft k\u1ebf v\u1eadt l\u00fd, hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh linh ho\u1ea1t trong tri\u1ec3n khai. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eabn 100G b\u1eb1ng c\u00e1c ki\u1ebfn tr\u00fac \u0111i\u1ec7n t\u01b0\u01a1ng t\u1ef1, nh\u01b0ng t\u00e1c \u0111\u1ed9ng hi\u1ec7u n\u0103ng th\u1ef1c t\u1ebf c\u1ee7a ch\u00fang l\u1ea1i r\u1ea5t kh\u00e1c nhau\u2014\u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng hi\u1ec7n \u0111\u1ea1i c\u00f3 m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng so s\u00e1nh d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y t\u1eebng y\u1ebfu t\u1ed1 then ch\u1ed1t m\u00e0 c\u00e1c k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi ra quy\u1ebft \u0111\u1ecbnh quan t\u00e2m nh\u1ea5t:<\/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\/1e2531332cf840bca2e32faa3d6f0338.jpg\" alt=\"CFP4 vs. QSFP28: Key Differences at a Glance\" class=\"wp-image-2506\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e2531332cf840bca2e32faa3d6f0338.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e2531332cf840bca2e32faa3d6f0338-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e2531332cf840bca2e32faa3d6f0338-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e2531332cf840bca2e32faa3d6f0338-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e2531332cf840bca2e32faa3d6f0338-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea3ng so s\u00e1nh CFP4 v\u00e0 QSFP28<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 221px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>CFP4<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>K\u00edch th\u01b0\u1edbc d\u1ea1ng module<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u1edbn h\u01a1n (h\u01b0\u1edbng t\u1edbi vi\u1ec5n th\u00f4ng)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nh\u1ecf g\u1ecdn (t\u1ed1i \u01b0u cho trung t\u00e2m d\u1eef li\u1ec7u)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (th\u01b0\u1eddng t\u1eeb 6\u201312W)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (th\u01b0\u1eddng t\u1eeb 2,5\u20134W)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>M\u1eadt \u0111\u1ed9 c\u1ed5ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ea1n ch\u1ebf (\u00edt c\u1ed5ng h\u01a1n tr\u00ean m\u1ed7i switch)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao (nhi\u1ec1u c\u1ed5ng h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb rack)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>Ki\u1ebfn tr\u00fac k\u00eanh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 \u00d7 25G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>Hi\u1ec7u su\u1ea5t nhi\u1ec7t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>Tri\u1ec3n khai \u0111i\u1ec3n h\u00ecnh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vi\u1ec5n th\u00f4ng, \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i, h\u1ec7 th\u1ed1ng c\u0169<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, m\u1ea1ng doanh nghi\u1ec7p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p><strong>S\u1ef1 ch\u1ea5p nh\u1eadn tr\u00ean th\u1ecb tr\u01b0\u1eddng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1ea3m d\u1ea7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi\u1ebfm \u01b0u th\u1ebf<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >K\u00edch th\u01b0\u1edbc v\u00e0 m\u1eadt \u0111\u1ed9 c\u1ed5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng kh\u00e1c bi\u1ec7t d\u1ec5 nh\u1eadn th\u1ea5y nh\u1ea5t gi\u1eefa CFP4 v\u00e0 QSFP28 l\u00e0 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/collateral\/interfaces-modules\/transceiver-modules\/data_sheet_c78-633027.html\"><strong>M\u00f4-\u0111un CFP4<\/strong><\/a> l\u1edbn h\u01a1n \u0111\u00e1ng k\u1ec3, l\u00e0m h\u1ea1n ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t tr\u00ean m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn duy nh\u1ea5t.<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482496.htm\"><strong>M\u00f4-\u0111un QSFP28<\/strong><\/a>, ng\u01b0\u1ee3c l\u1ea1i, nh\u1ecf h\u01a1n nhi\u1ec1u\u2014cho ph\u00e9p m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n 3\u20134 l\u1ea7n tr\u00ean c\u00f9ng ph\u1ea7n c\u1ee9ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn QSFP28 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 si\u00eau l\u1edbn<\/p><\/li><li><p>Ki\u1ebfn tr\u00fac spine-leaf<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1eed d\u1ee5ng \u0111i\u1ec7n n\u0103ng v\u00e0 hi\u1ec7u su\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong thi\u1ebft k\u1ebf m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>CFP4<\/strong> <strong>m\u00f4-\u0111un<\/strong> th\u01b0\u1eddng ti\u00eau th\u1ee5 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n, d\u1eabn \u0111\u1ebfn y\u00eau c\u1ea7u l\u00e0m m\u00e1t cao h\u01a1n v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh t\u0103ng l\u00ean.<\/p><\/li><li><p><strong>QSFP28<br><\/strong> <strong>m\u00f4-\u0111un<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng tr\u00ean m\u1ed7i bit, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Theo th\u1eddi gian, \u0111i\u1ec1u n\u00e0y chuy\u1ec3n h\u00f3a th\u00e0nh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed v\u1eadn h\u00e0nh (OPEX) th\u1ea5p h\u01a1n<\/p><\/li><li><p>\u0110\u1ed9 ph\u1ee9c t\u1ea1p trong qu\u1ea3n l\u00fd nhi\u1ec7t gi\u1ea3m \u0111i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ebfn tr\u00fac k\u00eanh (T\u1ea1i sao hi\u1ec7u n\u0103ng tr\u00f4ng t\u01b0\u01a1ng t\u1ef1 nhau)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00fa v\u1ecb thay, c\u1ea3 CFP4 l\u1eabn QSFP28 \u0111\u1ec1u s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac c\u01a1 b\u1ea3n gi\u1ed1ng nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>4 k\u00eanh \u00d7 25 Gbps = t\u1ed5ng b\u0103ng th\u00f4ng 100G<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 v\u1ec1 m\u1eb7t th\u00f4ng l\u01b0\u1ee3ng th\u00f4, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn. Tuy nhi\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP28 t\u00edch h\u1ee3p ki\u1ebfn tr\u00fac n\u00e0y v\u00e0o m\u1ed9t thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n<\/p><\/li><li><p>CFP4 gi\u1eef l\u1ea1i c\u00e1ch tri\u1ec3n khai c\u1ed3ng k\u1ec1nh, h\u01b0\u1edbng t\u1edbi h\u1ec7 th\u1ed1ng c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec v\u1eady, kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1 kh\u00f4ng n\u1eb1m \u1edf t\u1ed1c \u0111\u1ed9\u2014m\u00e0 \u1edf m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 khi cung c\u1ea5p t\u1ed1c \u0111\u1ed9 \u0111\u00f3<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u00f4i tr\u01b0\u1eddng tri\u1ec3n khai<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng d\u1ef1 ki\u1ebfn c\u00e0ng l\u00e0m n\u1ed5i b\u1eadt s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa CFP4 v\u00e0 QSFP28:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>CFP4<\/strong> v\u1eabn c\u00f2n \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong:<\/p><ul><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng<\/p><\/li><li><p>M\u1ea1ng \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i ho\u1eb7c m\u1ea1ng \u0111\u00f4 th\u1ecb<\/p><\/li><li><p>H\u1ec7 th\u1ed1ng c\u0169 y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<\/p><\/li><\/ul><\/li><li><p><strong>QSFP28<br><\/strong> chi\u1ebfm \u01b0u th\u1ebf trong:<\/p><ul><li><p>```html<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/google-cloud-platform-gcp-networking-architecture-guide\/\">\u0110i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/a> m\u00f4i tr\u01b0\u1eddng<\/p><\/li><li><p>L\u1edbp l\u00f5i v\u00e0 l\u1edbp t\u1eadp h\u1ee3p doanh nghi\u1ec7p<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u1ea3 hai m\u00f4-\u0111un \u0111\u1ec1u cung c\u1ea5p hi\u1ec7u n\u0103ng 100G, nh\u01b0ng so s\u00e1nh CFP4 v\u1edbi QSFP28 cu\u1ed1i c\u00f9ng quy v\u1ec1 \u0111i\u1ec1u sau \u0111\u00e2y:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>CFP4 l\u00e0 d\u1ea1ng chu\u1ea9n mang t\u00ednh chuy\u1ec3n ti\u1ebfp, t\u1eadp trung v\u00e0o vi\u1ec5n th\u00f4ng, trong khi QSFP28 l\u00e0 ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u00e0nh ri\u00eang cho m\u1ea1ng c\u00f3 m\u1eadt \u0111\u1ed9 cao v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 CFP4 so v\u1edbi QSFP28 d\u00e0nh cho trung t\u00e2m d\u1eef li\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong thi\u1ebft k\u1ebf trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c so s\u00e1nh CFP4 v\u00e0 QSFP28 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng m\u1ea1nh b\u1edfi m\u1ed9t \u01b0u ti\u00ean n\u1ed5i b\u1eadt: m\u1eadt \u0111\u1ed9 c\u1ed5ng tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb gi\u00e1 (rack unit). Khi c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1m m\u00e2y quy m\u00f4 l\u1edbn (hyperscale) v\u00e0 c\u00e1c nh\u00e0 khai th\u00e1c doanh nghi\u1ec7p ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng m\u1ea1ng 100G, hi\u1ec7u qu\u1ea3 v\u1eadt l\u00fd c\u1ee7a c\u00e1c d\u1ea1ng th\u1ee9c b\u1ed9 thu ph\u00e1t (transceiver form factors) \u0111\u00e3 tr\u1edf n\u00ean quan tr\u1ecdng ngang b\u1eb1ng v\u1edbi b\u0103ng th\u00f4ng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077.jpg\" alt=\"CFP4 vs. QSFP28 for Data Centers\" class=\"wp-image-2507\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c78844a8d7f04b2f89a7029734bd1077-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao QSFP28 chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c tri\u1ec3n khai trung t\u00e2m d\u1eef li\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft m\u1ecdi h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i <strong>ki\u1ebfn tr\u00fac l\u00e1-gai (leaf-spine architectures)<br><\/strong>, <strong>QSFP28 \u0111\u00e3 tr\u1edf th\u00e0nh giao di\u1ec7n 100G m\u1eb7c \u0111\u1ecbnh<\/strong>. C\u00e1c l\u00fd do r\u1ea5t r\u00f5 r\u00e0ng v\u00e0 g\u1eafn ch\u1eb7t v\u1edbi hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u1eadt \u0111\u1ed9 c\u1ed5ng cao:<\/strong> Nhi\u1ec1u c\u1ed5ng QSFP28 h\u01a1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o m\u1ed9t chassis c\u00f4ng t\u1eafc duy nh\u1ea5t, t\u1ed1i \u0111a h\u00f3a th\u00f4ng l\u01b0\u1ee3ng tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb gi\u00e1<\/p><\/li><li><p><strong>C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng:<\/strong> Quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m t\u1ea3i l\u00e0m m\u00e1t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng d\u00e0y \u0111\u1eb7c<\/p><\/li><li><p><strong>Kh\u1ea3 n\u0103ng tri\u1ec3n khai linh ho\u1ea1t:<\/strong> H\u1ed7 tr\u1ee3 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473115.htm\">SR4<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\">LR4<\/a>, c\u0169ng nh\u01b0 c\u00e1c t\u00f9y ch\u1ecdn DAC\/AOC trong c\u00e1c k\u1ecbch b\u1ea3n kho\u1ea3ng c\u00e1ch ng\u1eafn v\u00e0 d\u00e0i<\/p><\/li><li><p><strong>\u0110\u1ed9 tr\u01b0\u1edfng th\u00e0nh c\u1ee7a h\u1ec7 sinh th\u00e1i:<\/strong> \u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i b\u1edfi nhi\u1ec1u nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb c\u00f4ng t\u1eafc, card giao di\u1ec7n m\u1ea1ng (NIC) v\u00e0 module quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t th\u1ef1c ti\u1ec5n, QSFP28 cho ph\u00e9p c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u m\u1edf r\u1ed9ng theo chi\u1ec1u ngang m\u00e0 kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi kh\u00f4ng gian v\u1eadt l\u00fd hay c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 nhi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao CFP4 hi\u1ebfm khi xu\u1ea5t hi\u1ec7n trong trung t\u00e2m d\u1eef li\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 CFP4 c\u0169ng h\u1ed7 tr\u1ee3 100G, nh\u01b0ng n\u00f3 hi\u1ebfm khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i do m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd l\u1edbn h\u01a1n l\u00e0m gi\u1ea3m m\u1eadt \u0111\u1ed9 c\u1ed5ng tr\u00ean c\u00f4ng t\u1eafc<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao h\u01a1n l\u00e0m t\u0103ng chi ph\u00ed v\u1eadn h\u00e0nh<\/p><\/li><li><p>Linh ho\u1ea1t k\u00e9m h\u01a1n tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>Vi\u1ec7c \u00e1p d\u1ee5ng h\u1ea1n ch\u1ebf trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y m\u1edbi (cloud-native)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, CFP4 th\u01b0\u1eddng v\u1eafng m\u1eb7t trong c\u00e1c tri\u1ec3n khai trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi (greenfield) v\u00e0 ch\u1ee7 y\u1ebfu ch\u1ec9 xu\u1ea5t hi\u1ec7n trong c\u00e1c h\u1ec7 th\u1ed1ng c\u0169 ho\u1eb7c \u0111ang trong giai \u0111o\u1ea1n chuy\u1ec3n \u0111\u1ed5i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Hi\u1ec7u qu\u1ea3 gi\u00e1 (Rack Efficiency): Y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1nh gi\u00e1 CFP4 so v\u1edbi QSFP28, hi\u1ec7u qu\u1ea3 gi\u00e1 tr\u1edf th\u00e0nh ch\u1ec9 s\u1ed1 quy\u1ebft \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP28 cho ph\u00e9p nhi\u1ec1u k\u1ebft n\u1ed1i 100G h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb gi\u00e1, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n tr\u1ef1c ti\u1ebfp:<\/p><ul><li><p>M\u1eadt \u0111\u1ed9 b\u0103ng th\u00f4ng<\/p><\/li><li><p>Vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng gian<\/p><\/li><li><p>Chi ph\u00ed tr\u00ean m\u1ed7i gigabit<\/p><\/li><\/ul><\/li><li><p>CFP4, d\u00f9 c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ea1t c\u00f9ng m\u1ee9c th\u00f4ng l\u01b0\u1ee3ng 100G, l\u1ea1i l\u00e0m gi\u1ea3m:<\/p><ul><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng<\/p><\/li><li><p>Hi\u1ec7u qu\u1ea3 chuy\u1ec3n m\u1ea1ch tr\u00ean m\u1ed7i chassis<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao QSFP28 \u0111\u01b0\u1ee3c \u01b0u ti\u00ean m\u1ea1nh m\u1ebd trong c\u00e1c m\u00f4i tr\u01b0\u1eddng hyperscale, n\u01a1i t\u1eebng \u0111\u01a1n v\u1ecb gi\u00e1 \u0111\u1ec1u c\u00f3 \u00fd ngh\u0129a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, k\u1ebft lu\u1eadn l\u00e0 r\u00f5 r\u00e0ng:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>QSFP28 l\u00e0 l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n cho c\u00e1c tri\u1ec3n khai 100G nh\u1edd m\u1eadt \u0111\u1ed9, hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a n\u00f3. CFP4 ph\u1ea7n l\u1edbn \u0111\u01b0\u1ee3c coi l\u00e0 c\u00f4ng ngh\u1ec7 l\u1ed7i th\u1eddi trong m\u00f4i tr\u01b0\u1eddng n\u00e0y.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 So s\u00e1nh CFP4 v\u00e0 QSFP28 cho m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng kho\u1ea3ng c\u00e1ch xa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 QSFP28 chi\u1ebfm \u01b0u th\u1ebf trong trung t\u00e2m d\u1eef li\u1ec7u, ph\u00e9p so s\u00e1nh thay \u0111\u1ed5i khi ch\u00fang ta chuy\u1ec3n sang <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-in-telecom-meaning-types-applications\/\">vi\u1ec5n th\u00f4ng<\/a>, m\u1ea1ng \u0111\u00f4 th\u1ecb (metro) v\u00e0 m\u1ea1ng truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa (long-haul). Trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng n\u00e0y, c\u00e1c \u01b0u ti\u00ean thi\u1ebft k\u1ebf d\u1ecbch chuy\u1ec3n t\u1eeb m\u1eadt \u0111\u1ed9 sang t\u1ea7m ph\u1ee7 quang h\u1ecdc, \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch h\u1ec7 th\u1ed1ng.<\/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\/619b6c36de2e430ea5d84152bc750d83.jpg\" alt=\"CFP4 vs. QSFP28 for Telecom and Long-Distance Networks\" class=\"wp-image-2508\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/619b6c36de2e430ea5d84152bc750d83.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/619b6c36de2e430ea5d84152bc750d83-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/619b6c36de2e430ea5d84152bc750d83-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/619b6c36de2e430ea5d84152bc750d83-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/619b6c36de2e430ea5d84152bc750d83-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng n\u01a1i CFP4 v\u1eabn xu\u1ea5t hi\u1ec7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CFP4 ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng v\u00e0 c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 (carrier-grade), \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng t\u1eadp h\u1ee3p \u0111\u00f4 th\u1ecb (Metro aggregation networks)<\/p><\/li><li><p>C\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa (Long-haul transmission systems \u2013 ki\u1ebfn tr\u00fac d\u1ef1a tr\u00ean DWDM)<\/p><\/li><li><p>C\u00e1c n\u1ec1n t\u1ea3ng truy\u1ec1n t\u1ea3i 100G c\u0169 (Legacy 100G transport platforms)<\/p><\/li><li><p>Thi\u1ebft b\u1ecb truy\u1ec1n t\u1ea3i quang hi\u1ec7u n\u0103ng cao (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-otn-optical-transport-network\/\">OTN<\/a> )<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y, CFP4 th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tr\u01b0\u1edbc khi QSFP28 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00fd do CFP4 v\u1eabn c\u00f2n li\u00ean quan trong l\u0129nh v\u1ef1c vi\u1ec5n th\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng vi\u1ec5n th\u00f4ng \u01b0u ti\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ea7m ph\u1ee7 quang h\u1ecdc v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u00edn hi\u1ec7u<\/p><\/li><li><p>T\u00edch h\u1ee3p v\u1edbi thi\u1ebft b\u1ecb truy\u1ec1n t\u1ea3i hi\u1ec7n c\u00f3<\/p><\/li><li><p>\u0110\u1ed9 tin c\u1eady c\u1ea5p nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 (carrier-grade) h\u01a1n l\u00e0 m\u1eadt \u0111\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un CFP4 th\u01b0\u1eddng \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c n\u1ec1n t\u1ea3ng quang h\u1ecdc \u0111\u1ed3ng pha (Coherent optics platforms)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch xa <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-dwdm-explaining-dense-wavelength-division-multiplexing\/\">DWDM<\/a> )<\/p><\/li><li><p>C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng d\u00e2y quang (optical line systems) y\u00eau c\u1ea7u ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t m\u1ea1nh m\u1ebd<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, k\u00edch th\u01b0\u1edbc h\u00ecnh th\u1ee9c l\u1edbn h\u01a1n c\u1ee7a CFP4 \u00edt g\u00e2y b\u1ea5t l\u1ee3i h\u01a1n v\u00e0 \u0111\u00f4i khi th\u1eadm ch\u00ed c\u00f2n c\u00f3 l\u1ee3i cho vi\u1ec7c qu\u1ea3n l\u00fd hi\u1ec7u n\u0103ng nhi\u1ec7t v\u00e0 quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Khi QSFP28 xu\u1ea5t hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ng vi\u1ec5n th\u00f4ng, nh\u01b0ng th\u01b0\u1eddng \u1edf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c l\u1edbp t\u1eadp h\u1ee3p \u0111\u1ea7u cu\u1ed1i (Edge aggregation layers)<\/p><\/li><li><p>C\u00e1c k\u1ebft n\u1ed1i ng\u1eafn gi\u1eefa c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn (Short-reach interconnects between routers)<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\">K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (Data center interconnect)<\/a> (DCI)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi truy\u1ec1n d\u1eabn th\u1ef1c s\u1ef1 kho\u1ea3ng c\u00e1ch xa, CFP4 (ho\u1eb7c th\u1eadm ch\u00ed CFP2-DCO\/CFP8 trong c\u00e1c h\u1ec7 th\u1ed1ng m\u1edbi h\u01a1n) v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n t\u00f9y thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng y\u1ebfu t\u1ed1 nh\u00e0 quy ho\u1ea1ch m\u1ea1ng c\u1ea7n \u0111\u00e1nh gi\u00e1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn gi\u1eefa CFP4 v\u00e0 QSFP28 trong m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng, k\u1ef9 s\u01b0 c\u1ea7n \u0111\u00e1nh gi\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u00e3 l\u1eafp \u0111\u1eb7t<\/strong><\/p><\/li><li><p>Y\u00eau c\u1ea7u v\u1ec1 t\u1ea7m ph\u1ee7 quang h\u1ecdc (h\u1ec7 th\u1ed1ng ZR\/ZR+ ho\u1eb7c DWDM)<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 t\u1eeb h\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb<\/p><\/li><li><p>\u0110\u01b0\u1eddng d\u1eabn n\u00e2ng c\u1ea5p h\u01b0\u1edbng t\u1edbi c\u00f4ng ngh\u1ec7 \u0111\u1ed3ng pha (coherent) <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/492340.htm\">QSFP-DD<\/a> ho\u1eb7c m\u00f4-\u0111un OSFP<\/p><\/li><li><p>T\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi c\u1ee7a vi\u1ec7c di chuy\u1ec3n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy\u1ebft \u0111\u1ecbnh then ch\u1ed1t kh\u00f4ng ch\u1ec9 l\u00e0 hi\u1ec7u n\u0103ng\u2014m\u00e0 c\u00f2n l\u00e0<br> <strong>t\u00ednh li\u00ean t\u1ee5c c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 r\u1ee7i ro n\u00e2ng c\u1ea5p<br><\/strong>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Trong m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng quang \u0111\u01b0\u1eddng d\u00e0i, CFP4 ch\u01b0a l\u1ed7i th\u1eddi\u2014m\u00e0 v\u1eabn c\u00f3 t\u00ednh ph\u00f9 h\u1ee3p trong t\u1eebng t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3, \u0111\u1eb7c bi\u1ec7t \u1edf c\u00e1c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng k\u1ebf th\u1eeba ho\u1eb7c t\u1eadp trung v\u00e0o v\u1eadn chuy\u1ec3n. Tuy nhi\u00ean, QSFP28 ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n t\u1ea1i bi\u00ean m\u1ea1ng v\u00e0 trong c\u00e1c ki\u1ebfn tr\u00fac lai.<br>.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 C\u00f4ng su\u1ea5t, m\u1eadt \u0111\u1ed9 c\u1ed5ng v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO)<br><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1nh gi\u00e1 CFP4 so v\u1edbi QSFP28, hi\u1ec7u n\u0103ng \u0111\u01a1n thu\u1ea7n kh\u00f4ng ph\u1ea3i y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh\u2014\u0111\u1eb7c bi\u1ec7t v\u00ec c\u1ea3 hai \u0111\u1ec1u cung c\u1ea5p c\u00f9ng kh\u1ea3 n\u0103ng b\u0103ng th\u00f4ng 100G. Trong quy ho\u1ea1ch m\u1ea1ng th\u1ef1c t\u1ebf, nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t l\u00e0 hi\u1ec7u qu\u1ea3 c\u00f4ng su\u1ea5t, m\u1eadt \u0111\u1ed9 c\u1ed5ng v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO) trong su\u1ed1t v\u00f2ng \u0111\u1eddi tri\u1ec3n khai.<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\/9c7040d966e44451b77ca77e5eda7259.jpg\" alt=\"Power, Density, and Total Cost of Ownership\" class=\"wp-image-2509\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9c7040d966e44451b77ca77e5eda7259.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9c7040d966e44451b77ca77e5eda7259-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9c7040d966e44451b77ca77e5eda7259-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9c7040d966e44451b77ca77e5eda7259-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9c7040d966e44451b77ca77e5eda7259-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t: Hi\u1ec7u qu\u1ea3 \u1edf quy m\u00f4 l\u1edbn<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng su\u1ea5t l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng nh\u1ea5t trong c\u00e1c m\u1ea1ng quang hi\u1ec7n \u0111\u1ea1i.<br>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u00f4-\u0111un CFP4<\/strong> th\u01b0\u1eddng ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng, th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng ~6\u201312W t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i quang h\u1ecdc v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n.<br>.<\/p><\/li><li><p><strong>M\u00f4-\u0111un QSFP28<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m t\u1ed1i \u01b0u hi\u1ec7u qu\u1ea3, th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c kho\u1ea3ng 2,5\u20134W tr\u00ean m\u1ed7i c\u1ed5ng.<br>.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 s\u1ef1 ch\u00eanh l\u1ec7ch n\u00e0y c\u00f3 v\u1ebb nh\u1ecf \u1edf c\u1ea5p \u0111\u1ed9 module \u0111\u01a1n l\u1ebb, nh\u01b0ng n\u00f3 tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3 khi m\u1edf r\u1ed9ng quy m\u00f4:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u00f3 128 c\u1ed5ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u0103ng th\u00eam h\u00e0ng tr\u0103m watt c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 n\u1ebfu s\u1eed d\u1ee5ng CFP4 thay v\u00ec QSFP28.<br>.<\/p><\/li><li><p>C\u00f4ng su\u1ea5t cao h\u01a1n tr\u1ef1c ti\u1ebfp l\u00e0m t\u0103ng:<br><\/p><ul><li><p>Y\u00eau c\u1ea7u l\u00e0m m\u00e1t<br><\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u<br><\/p><\/li><li><p>Chi ph\u00ed v\u1eadn h\u00e0nh (OPEX)<br><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t:<br><\/strong> QSFP28 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u cho \u201chi\u1ec7u qu\u1ea3 c\u00f4ng su\u1ea5t tr\u00ean m\u1ed7i bit\u201d, do \u0111\u00f3 ph\u00f9 h\u1ee3p h\u01a1n nhi\u1ec1u cho c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn.<br>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1eadt \u0111\u1ed9 c\u1ed5ng: H\u1ec7 s\u1ed1 nh\u00e2n kh\u00f4ng gian k\u1ec7 rack<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ki\u1ebfn tr\u00fac m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, kh\u00f4ng gian v\u1eadt l\u00fd ch\u00ednh l\u00e0 ti\u1ec1n b\u1ea1c.<br>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Y\u1ebfu t\u1ed1 h\u00ecnh th\u1ee9c l\u1edbn h\u01a1n c\u1ee7a CFP4<br><\/strong> h\u1ea1n ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng c\u00f3 th\u1ec3 l\u1eafp v\u1eeba v\u00e0o m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c th\u1ebb \u0111\u01b0\u1eddng truy\u1ec1n.<br>.<\/p><\/li><li><p><strong>Thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn c\u1ee7a QSFP28<br><\/strong> cho ph\u00e9p \u0111\u1ea1t m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n \u0111\u00e1ng k\u1ec3 trong c\u00f9ng di\u1ec7n t\u00edch ph\u1ea7n c\u1ee9ng.<br>.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ed1 l\u01b0\u1ee3ng li\u00ean k\u1ebft 100G tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb rack (RU)<br><\/p><\/li><li><p>N\u0103ng l\u1ef1c chuy\u1ec3n m\u1ea1ch tr\u00ean m\u1ed7i chassis<br><\/p><\/li><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed5ng th\u1ec3 c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng si\u00eau quy m\u00f4 (hyperscale), QSFP28 c\u00f3 th\u1ec3 cung c\u1ea5p m\u1eadt \u0111\u1ed9 c\u1ed5ng cao g\u1ea5p 2\u20134 l\u1ea7n so v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean CFP4.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao QSFP28 \u0111\u00e3 tr\u1edf th\u00e0nh chu\u1ea9n m\u1ef1c cho:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u ki\u1ebfn tr\u00fac leaf-spine<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li><li><p>C\u00e1c l\u1edbp t\u1eadp h\u1ee3p m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi so s\u00e1nh CFP4 v\u1edbi QSFP28, TCO l\u00e0 ch\u1ec9 s\u1ed1 d\u00e0i h\u1ea1n quan tr\u1ecdng nh\u1ea5t\u2014kh\u00f4ng ch\u1ec9 l\u00e0 gi\u00e1 ban \u0111\u1ea7u c\u1ee7a module.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TCO bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed ph\u1ea7n c\u1ee9ng (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a> + quang h\u1ecdc)<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng l\u00e0m m\u00e1t<\/p><\/li><li><p>Vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng gian rack<\/p><\/li><li><p>Chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 m\u1edf r\u1ed9ng quy m\u00f4<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >H\u1ed3 s\u01a1 TCO c\u1ee7a CFP4<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c h\u1ec7 th\u1ed1ng CFP4 th\u01b0\u1eddng c\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng cao h\u01a1n \u2192 chi ph\u00ed \u0111i\u1ec7n cao h\u01a1n<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng th\u1ea5p h\u01a1n \u2192 c\u1ea7n nhi\u1ec1u thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng h\u01a1n \u0111\u1ec3 \u0111\u1ea1t c\u00f9ng c\u00f4ng su\u1ea5t<\/p><\/li><li><p>Nhu c\u1ea7u l\u00e0m m\u00e1t t\u0103ng cao<\/p><\/li><li><p>Chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng tr\u00ean m\u1ed7i bit ti\u1ec1m \u1ea9n cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">CFP4 v\u1eabn c\u00f3 th\u1ec3 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed trong c\u00e1c m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng k\u1ebf th\u1eeba \u1ed5n \u0111\u1ecbnh, nh\u01b0ng kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng k\u00e9m trong c\u00e1c tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i, d\u00e0y \u0111\u1eb7c.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >H\u1ed3 s\u01a1 TCO c\u1ee7a QSFP28<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng \u2192 gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh (OPEX)<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 cao h\u01a1n \u2192 c\u1ea7n \u00edt switch h\u01a1n<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t h\u01a1n \u2192 ho\u00e3n vi\u1ec7c m\u1edf r\u1ed9ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/p><\/li><li><p>H\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p m\u1ea1nh \u2192 gi\u00e1 c\u1ea1nh tranh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn chi ph\u00ed th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i li\u00ean k\u1ebft 100G theo th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng quy m\u00f4 \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf: V\u00ec sao c\u00e1c nh\u00e0 khai th\u00e1c ch\u1ecdn QSFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf, c\u00e1c nh\u00e0 khai th\u00e1c th\u01b0\u1eddng nh\u1eadn th\u1ea5y r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ngay c\u1ea3 khi c\u00e1c module CFP4 v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng l\u00e0 \u0111\u1ee7,<\/p><\/li><li><p>G\u00e1nh n\u1eb7ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u01b0\u1ee3t qu\u00e1 l\u1ee3i \u00edch mang l\u1ea1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 l\u00e0m gi\u1ea3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng gian rack<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng<\/p><\/li><li><p>T\u1ea3i l\u00ean h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e0 t\u0103ng c\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u0103ng th\u00f4ng tr\u00ean m\u1ed7i rack<\/p><\/li><li><p>T\u00ednh linh ho\u1ea1t khi tri\u1ec3n khai<\/p><\/li><li><p>ROI d\u00e0i h\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1eb7c d\u00f9 CFP4 v\u00e0 QSFP28 \u0111\u1ec1u cung c\u1ea5p th\u00f4ng l\u01b0\u1ee3ng 100G nh\u01b0 nhau, QSFP28 mang l\u1ea1i t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO) th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 nh\u1edd hi\u1ec7u su\u1ea5t \u0111i\u1ec7n n\u0103ng v\u01b0\u1ee3t tr\u1ed9i v\u00e0 m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn QSFP28 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, trong khi CFP4 ch\u1ec9 c\u00f2n ph\u00f9 h\u1ee3p trong c\u00e1c m\u00f4i tr\u01b0\u1eddng chuy\u00ean bi\u1ec7t ho\u1eb7c k\u1ebf th\u1eeba, n\u01a1i vi\u1ec7c di chuy\u1ec3n ch\u01b0a kh\u1ea3 thi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 B\u1ea1n c\u00f3 n\u00ean thay th\u1ebf CFP4 b\u1eb1ng QSFP28 kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi th\u1ef1c ti\u1ec5n v\u00e0 c\u00f3 t\u00ednh h\u00e0nh \u0111\u1ed9ng cao nh\u1ea5t \u0111\u1eb1ng sau so s\u00e1nh CFP4 v\u00e0 QSFP28 kh\u00f4ng mang t\u00ednh l\u00fd thuy\u1ebft\u2014m\u00e0 mang t\u00ednh v\u1eadn h\u00e0nh:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\u201cT\u00f4i c\u00f3 n\u00ean thay th\u1ebf c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CFP4 hi\u1ec7n t\u1ea1i b\u1eb1ng QSFP28 kh\u00f4ng?\u201d<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi kh\u00f4ng mang t\u00ednh ph\u1ed5 qu\u00e1t. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o ki\u1ebfn tr\u00fac m\u1ea1ng hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n, y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 th\u1eddi \u0111i\u1ec3m chu k\u1ef3 n\u00e2ng c\u1ea5p. Tr\u00ean th\u1ef1c t\u1ebf, \u0111\u00e2y l\u00e0 m\u1ed9t khu\u00f4n kh\u1ed5 ra quy\u1ebft \u0111\u1ecbnh di chuy\u1ec3n, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t ph\u00e9p so s\u00e1nh s\u1ea3n ph\u1ea9m \u0111\u01a1n gi\u1ea3n.<\/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\/924a95ce983849bdae5714d6ec38f7bf.jpg\" alt=\"Should You Replace CFP4 with QSFP28?\" class=\"wp-image-2510\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/924a95ce983849bdae5714d6ec38f7bf.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/924a95ce983849bdae5714d6ec38f7bf-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/924a95ce983849bdae5714d6ec38f7bf-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/924a95ce983849bdae5714d6ec38f7bf-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/924a95ce983849bdae5714d6ec38f7bf-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 1: \u0110\u00e1nh gi\u00e1 C\u01a1 s\u1edf H\u1ea1 t\u1ea7ng Hi\u1ec7n c\u00f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u1ebfu t\u1ed1 \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 nh\u1eefng g\u00ec b\u1ea1n \u0111\u00e3 tri\u1ec3n khai.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >B\u1ea1n n\u00ean c\u00e2n nh\u1eafc <em>gi\u1eef l\u1ea1i CFP4<\/em> n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng vi\u1ec5n th\u00f4ng ho\u1eb7c v\u1eadn chuy\u1ec3n 100G l\u1ed7i th\u1eddi<\/p><\/li><li><p>C\u00e1c m\u00f4-\u0111un CFP4 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u00e2u v\u00e0o c\u00e1c th\u1ebb \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n quang<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u01b0a ti\u1ebfn g\u1ea7n \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 t\u1eeb nh\u00e0 cung c\u1ea5p \u0111\u1ed1i v\u1edbi CFP4 v\u1eabn c\u00f2n ho\u1ea1t \u0111\u1ed9ng trong h\u1ec7 sinh th\u00e1i c\u1ee7a b\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, vi\u1ec7c thay th\u1ebf CFP4 c\u00f3 th\u1ec3 g\u00e2y ra chi ph\u00ed v\u00e0 r\u1ee7i ro v\u1eadn h\u00e0nh kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >B\u1ea1n n\u00ean c\u00e2n nh\u1eafc <em>di chuy\u1ec3n sang QSFP28<\/em> n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n \u0111ang v\u1eadn h\u00e0nh ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c h\u01b0\u1edbng t\u1edbi \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li><li><p>B\u1ea1n \u0111ang g\u1eb7p t\u00ecnh tr\u1ea1ng thi\u1ebfu c\u1ed5ng ho\u1eb7c gi\u1edbi h\u1ea1n v\u1ec1 m\u1eadt \u0111\u1ed9<\/p><\/li><li><p>C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3 QSFP28 m\u1ed9t c\u00e1ch natively<\/p><\/li><li><p>B\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch cho chu k\u1ef3 l\u00e0m m\u1edbi ho\u1eb7c n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng<strong>e<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i d\u1ef1a tr\u00ean Ethernet, QSFP28 th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn m\u1eb7c \u0111\u1ecbnh \u0111\u1ec3 ph\u00e1t tri\u1ec3n ti\u1ebfp.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 2: \u0110\u00e1nh gi\u00e1 Y\u00eau c\u1ea7u v\u1ec1 Kh\u1ea3 n\u0103ng M\u1edf r\u1ed9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t th\u00fac \u0111\u1ea9y h\u1ea7u h\u1ebft c\u00e1c quy\u1ebft \u0111\u1ecbnh di chuy\u1ec3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u1ef1 h\u1ecfi b\u1ea3n th\u00e2n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u01b0u l\u01b0\u1ee3ng s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i ho\u1eb7c g\u1ea5p ba trong v\u00f2ng 2\u20133 n\u0103m t\u1edbi kh\u00f4ng?<\/p><\/li><li><p>T\u00f4i c\u00f3 c\u1ea7n nhi\u1ec1u c\u1ed5ng 100G h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb rack kh\u00f4ng?<\/p><\/li><li><p>T\u00f4i c\u00f3 b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi kh\u00f4ng gian v\u1eadt l\u00fd ho\u1eb7c m\u1eadt \u0111\u1ed9 b\u1ed9 chuy\u1ec3n m\u1ea1ch kh\u00f4ng?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a CFP4 trong vi\u1ec7c m\u1edf r\u1ed9ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n l\u00e0m h\u1ea1n ch\u1ebf kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng s\u1ed1 c\u1ed5ng<\/p><\/li><li><p>C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 cao h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng l\u00e0m gia t\u0103ng c\u00e1c \u0111i\u1ec3m ngh\u1ebdn nhi\u1ec7t<\/p><\/li><li><p>\u0110\u01b0\u1eddng d\u1eabn ch\u1eadm h\u01a1n t\u1edbi c\u00e1c ki\u1ebfn tr\u00fac c\u00f3 m\u1eadt \u0111\u1ed9 cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a QSFP28 trong vi\u1ec7c m\u1edf r\u1ed9ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p thi\u1ebft k\u1ebf leaf-spine m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 m\u1edf r\u1ed9ng theo m\u00f4-\u0111un v\u00e0 t\u1eebng b\u01b0\u1edbc<\/p><\/li><li><p>Gi\u1ea3m chi ph\u00ed tr\u00ean m\u1ed7i k\u1ebft n\u1ed1i 100G b\u1ed5 sung<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ea1ng c\u1ee7a b\u1ea1n h\u01b0\u1edbng t\u1edbi s\u1ef1 t\u0103ng tr\u01b0\u1edfng, th\u00ec QSFP28 g\u1ea7n nh\u01b0 lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn b\u1ec1n v\u1eefng h\u01a1n cho t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 3: C\u00e2n nh\u1eafc Th\u1eddi \u0111i\u1ec3m N\u00e2ng c\u1ea5p (Chi\u1ebfn l\u01b0\u1ee3c Chu k\u1ef3 S\u1ed1ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c di chuy\u1ec3n kh\u00f4ng ch\u1ec9 mang t\u00ednh k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n r\u1ea5t nh\u1ea1y c\u1ea3m v\u1ec1 m\u1eb7t th\u1eddi gian.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1eddi \u0111i\u1ec3m l\u00fd t\u01b0\u1edfng \u0111\u1ec3 thay th\u1ebf CFP4:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trong c\u00e1c chu k\u1ef3 l\u00e0m m\u1edbi ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c l\u00ean l\u1ecbch tr\u01b0\u1edbc<\/p><\/li><li><p>Khi di chuy\u1ec3n sang c\u00e1c th\u1ebf h\u1ec7 b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1edbi<\/p><\/li><li><p>Khi m\u1edf r\u1ed9ng n\u0103ng l\u1ef1c trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>Khi chuy\u1ec3n \u0111\u1ed5i sang ki\u1ebfn tr\u00fac g\u1ed1c \u0111\u00e1m m\u00e2y ho\u1eb7c <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/software-defined-networking-centralized-flexible-network-management\/\">SDN<\/a> architectures<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00e1nh thay th\u1ebf CFP4 khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft b\u1ecb v\u1eabn c\u00f2n trong chu k\u1ef3 kh\u1ea5u hao<\/p><\/li><li><p>Vi\u1ec7c di chuy\u1ec3n y\u00eau c\u1ea7u thay th\u1ebf to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng (g\u00e2y gi\u00e1n \u0111o\u1ea1n l\u1edbn)<\/p><\/li><li><p>Kh\u00f4ng c\u00f3 t\u1eafc ngh\u1ebdn hi\u1ec7u su\u1ea5t ho\u1eb7c dung l\u01b0\u1ee3ng n\u00e0o x\u1ea3y ra ngay l\u1eadp t\u1ee9c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t cu\u1ed9c di chuy\u1ec3n kh\u00f4ng \u0111\u00fang th\u1eddi \u0111i\u1ec3m c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 c\u1ea3 chi ph\u00ed CAPEX l\u1eabn th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 4: \u0110\u00e1nh gi\u00e1 c\u00e1c Chi\u1ebfn l\u01b0\u1ee3c Chuy\u1ec3n \u0111\u1ed5i H\u1ed7n h\u1ee3p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nhi\u1ec1u tri\u1ec3n khai th\u1ef1c t\u1ebf, c\u00e2u tr\u1ea3 l\u1eddi t\u1ed1t nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00e0 \u201cthay th\u1ebf ngay l\u1eadp t\u1ee9c\u201d, m\u00e0 l\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u1eebng b\u01b0\u1edbc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn h\u1ed7n h\u1ee3p ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1eef CFP4 \u1edf l\u1edbp l\u00f5i ho\u1eb7c l\u1edbp truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i<\/p><\/li><li><p>Gi\u1edbi thi\u1ec7u QSFP28 \u1edf l\u1edbp bi\u00ean, l\u1edbp t\u1eadp trung v\u00e0 l\u1edbp trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>L\u1eadp k\u1ebf ho\u1ea1ch chuy\u1ec3n \u0111\u1ed5i d\u1ea7n sang c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng d\u1ef1a tr\u00ean QSFP28<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y gi\u1ea3m r\u1ee7i ro \u0111\u1ed3ng th\u1eddi v\u1eabn c\u1ea3i thi\u1ec7n m\u1eadt \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >CFP4 \u0111\u00e3 l\u1ed7i th\u1eddi v\u00e0o n\u0103m 2026 ch\u01b0a?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CFP4 ch\u01b0a ho\u00e0n to\u00e0n l\u1ed7i th\u1eddi v\u00e0o n\u0103m 2026, nh\u01b0ng r\u00f5 r\u00e0ng \u0111ang \u1edf giai \u0111o\u1ea1n suy gi\u1ea3m trong m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Nh\u1eefng n\u01a1i CFP4 ng\u00e0y c\u00e0ng \u00edt li\u00ean quan:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi x\u00e2y d\u1ef1ng (g\u1ea7n nh\u01b0 ho\u00e0n to\u00e0n do QSFP28\/QSFP-DD chi ph\u1ed1i)<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng chuy\u1ec3n m\u1ea1ch Ethernet m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>Ki\u1ebfn tr\u00fac \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y g\u1ed1c v\u00e0 quy m\u00f4 si\u00eau l\u1edbn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y, CFP4 ng\u00e0y c\u00e0ng b\u1ecb tr\u00e1nh d\u00f9ng do:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n<\/p><\/li><li><p>Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng th\u1ea5p h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao QSFP28 \u0111\u00e3 th\u1ef1c s\u1ef1 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n 100G m\u1eb7c \u0111\u1ecbnh trong c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean Ethernet.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Nh\u1eefng n\u01a1i CFP4 v\u1eabn c\u00f2n li\u00ean quan:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">CFP4 ti\u1ebfp t\u1ee5c t\u1ed3n t\u1ea1i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng v\u00e0 truy\u1ec1n d\u1eabn c\u1ee5 th\u1ec3, \u0111\u1eb7c bi\u1ec7t l\u00e0 n\u01a1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean CFP4 hi\u1ec7n h\u1eefu v\u1eabn \u0111ang ho\u1ea1t \u0111\u1ed9ng<\/p><\/li><li><p>C\u00e1c n\u1ec1n t\u1ea3ng truy\u1ec1n d\u1eabn quang \u0111\u01b0\u1eddng d\u00e0i ho\u1eb7c \u0111\u00f4 th\u1ecb \u0111\u01b0\u1ee3c tri\u1ec3n khai<\/p><\/li><li><p>Vi\u1ec7c n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng t\u1ed1n k\u00e9m ho\u1eb7c g\u00e2y gi\u00e1n \u0111o\u1ea1n v\u1eadn h\u00e0nh<\/p><\/li><li><p>H\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p v\u1eabn h\u1ed7 tr\u1ee3 quang h\u1ecdc CFP4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, CFP4 v\u1eabn l\u00e0 c\u00f4ng ngh\u1ec7 ph\u1ee5c v\u1ee5 b\u1ea3o tr\u00ec, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Xu h\u01b0\u1edbng ng\u00e0nh c\u00f3 th\u1ec3 t\u00f3m l\u01b0\u1ee3c nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP28 = ti\u00eau chu\u1ea9n Ethernet 100G ch\u1ee7 l\u01b0u<\/p><\/li><li><p>CFP4 = d\u1ea1ng nh\u00e2n t\u1ed1 k\u1ebf th\u1eeba + chuy\u00ean bi\u1ec7t cho vi\u1ec5n th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn nh\u00e0 khai th\u00e1c kh\u00f4ng c\u00f2n l\u1ef1a ch\u1ecdn CFP4 cho thi\u1ebft k\u1ebf m\u1edbi \u2014 h\u1ecd ch\u1ec9 <strong>duy tr\u00ec ho\u1eb7c thay th\u1ebf d\u1ea7n n\u00f3<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>CFP4 ch\u01b0a ho\u00e0n to\u00e0n l\u1ed7i th\u1eddi v\u00e0o n\u0103m 2026, nh\u01b0ng n\u00f3 kh\u00f4ng c\u00f2n l\u00e0 l\u1ef1a ch\u1ecdn h\u01b0\u1edbng t\u1edbi t\u01b0\u01a1ng lai cho c\u00e1c tri\u1ec3n khai m\u1edbi. QSFP28 \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ed1ng tr\u1ecb cho c\u00e1c m\u1ea1ng Ethernet 100G c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CFP4 so v\u1edbi QSFP28<\/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\/b26bf75f6bb24537bd8bd0d83155d666.jpg\" alt=\"FAQ About CFP4 vs. QSFP28\" class=\"wp-image-2511\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b26bf75f6bb24537bd8bd0d83155d666.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b26bf75f6bb24537bd8bd0d83155d666-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b26bf75f6bb24537bd8bd0d83155d666-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b26bf75f6bb24537bd8bd0d83155d666-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b26bf75f6bb24537bd8bd0d83155d666-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa CFP4 v\u00e0 QSFP28 l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 CFP4 v\u00e0 QSFP28 \u0111\u1ec1u h\u1ed7 tr\u1ee3 Ethernet 100G, nh\u01b0ng kh\u00e1c nhau v\u1ec1 hi\u1ec7u qu\u1ea3 thi\u1ebft k\u1ebf. CFP4 l\u1edbn h\u01a1n v\u00e0 thi\u00ean v\u1ec1 vi\u1ec5n th\u00f4ng, trong khi QSFP28 nh\u1ecf h\u01a1n, ti\u1ebft ki\u1ec7m \u0111i\u1ec7n n\u0103ng h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c tri\u1ec3n khai trung t\u00e2m d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, CFP4 hay QSFP28 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n \u0111\u00e1ng k\u1ec3 ng\u00e0y nay v\u00ec n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh d\u1ea1ng nh\u00e2n t\u1ed1 (form factor) ti\u00eau chu\u1ea9n 100G trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p, trong khi CFP4 ch\u1ee7 y\u1ebfu b\u1ecb gi\u1edbi h\u1ea1n \u1edf c\u00e1c h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng k\u1ebf th\u1eeba ho\u1eb7c chuy\u00ean bi\u1ec7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >CFP4 v\u00e0 QSFP28 c\u00f3 h\u1ed7 tr\u1ee3 c\u00f9ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. C\u1ea3 CFP4 v\u00e0 QSFP28 \u0111\u1ec1u th\u01b0\u1eddng h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eabn 100G b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng 4 k\u00eanh 25G, ngh\u0129a l\u00e0 kh\u1ea3 n\u0103ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u th\u00f4 c\u1ee7a ch\u00fang v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao QSFP28 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n cho chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n v\u00ec k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n cho ph\u00e9p l\u1eafp nhi\u1ec1u c\u1ed5ng h\u01a1n tr\u00ean m\u1ed7i b\u1ed9 chuy\u1ec3n m\u1ea1ch, c\u1ea3i thi\u1ec7n vi\u1ec7c s\u1eed d\u1ee5ng gi\u00e1 \u0111\u1ee1 (rack) v\u00e0 cho ph\u00e9p ki\u1ebfn tr\u00fac l\u00e1\u2013c\u1ed9t (leaf-spine) c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u1edbi b\u0103ng th\u00f4ng cao h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb kh\u00f4ng gian.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >CFP4 v\u00e0 QSFP28 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f9ng m\u1ed9t m\u1ea1ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, ch\u00fang c\u00f3 th\u1ec3 c\u00f9ng t\u1ed3n t\u1ea1i trong c\u00f9ng m\u1ed9t m\u1ea1ng, nh\u01b0ng th\u01b0\u1eddng \u1edf c\u00e1c l\u1edbp kh\u00e1c nhau. CFP4 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong <strong>h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n ho\u1eb7c h\u1ec7 th\u1ed1ng l\u00f5i k\u1ebf th\u1eeba, trong khi QSFP28 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c l\u1edbp t\u1eadp h\u1ee3p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u00f4-\u0111un n\u00e0o c\u00f3 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng t\u1ed1t h\u01a1n: CFP4 hay QSFP28?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 c\u00f3 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng t\u1ed1t h\u01a1n. N\u00f3 ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng, t\u1eeb \u0111\u00f3 l\u00e0m gi\u1ea3m nhu c\u1ea7u l\u00e0m m\u00e1t v\u00e0 h\u1ea1 th\u1ea5p chi ph\u00ed v\u1eadn h\u00e0nh t\u1ed5ng th\u1ec3 trong c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 hi\u1ec7u n\u0103ng gi\u1eefa CFP4 v\u00e0 QSFP28 hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 th\u00f4ng l\u01b0\u1ee3ng th\u00f4, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 hi\u1ec7u n\u0103ng, v\u00ec c\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 100G. Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u1ee7 ch\u1ed1t n\u1eb1m \u1edf hi\u1ec7u qu\u1ea3, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 thi\u1ebft k\u1ebf v\u1eadt l\u00fd, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ed1c \u0111\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o n\u00ean \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa CFP4 v\u00e0 QSFP28?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quy\u1ebft \u0111\u1ecbnh n\u00ean d\u1ef1a tr\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i ki\u1ebfn tr\u00fac m\u1ea1ng (trung t\u00e2m d\u1eef li\u1ec7u so v\u1edbi vi\u1ec5n th\u00f4ng)<\/p><\/li><li><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng y\u00eau c\u1ea7u<\/p><\/li><li><p>R\u00e0ng bu\u1ed9c v\u1ec1 n\u0103ng l\u01b0\u1ee3ng v\u00e0 l\u00e0m m\u00e1t<\/p><\/li><li><p>K\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p v\u00e0 m\u1edf r\u1ed9ng<\/p><\/li><li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ea7n c\u1ee9ng hi\u1ec7n c\u00f3<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u23e9 K\u1ebft lu\u1eadn: B\u1ea1n n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi so s\u00e1nh CFP4 v\u1edbi QSFP28, \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd nh\u1ea5t l\u00e0 c\u1ea3 hai c\u00f4ng ngh\u1ec7 \u0111\u1ec1u cung c\u1ea5p kh\u1ea3 n\u0103ng Ethernet 100G nh\u01b0 nhau, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 nh\u1eefng tri\u1ebft l\u00fd thi\u1ebft k\u1ebf m\u1ea1ng r\u1ea5t kh\u00e1c nhau.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>CFP4<\/strong> CFP4 \u0111\u01b0\u1ee3c hi\u1ec3u t\u1ed1t nh\u1ea5t nh\u01b0 m\u1ed9t d\u1ea1ng h\u1ec7 s\u1ed1 h\u00ecnh th\u1ee9c th\u00e2n thi\u1ec7n v\u1edbi h\u1ec7 th\u1ed1ng k\u1ebf th\u1eeba, h\u01b0\u1edbng t\u1edbi vi\u1ec5n th\u00f4ng, v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p trong m\u1ed9t s\u1ed1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u1eadn chuy\u1ec3n ho\u1eb7c \u0111\u01b0\u1eddng d\u00e0i c\u1ee5 th\u1ec3, n\u01a1i t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch quan tr\u1ecdng h\u01a1n m\u1eadt \u0111\u1ed9.<\/p><\/li><li><p><strong>QSFP28<br><\/strong>, QSFP28, m\u1eb7t kh\u00e1c, l\u00e0 ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i cho Ethernet 100G, \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, n\u1ec1n t\u1ea3ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 m\u1ea1ng doanh nghi\u1ec7p nh\u1edd m\u1eadt \u0111\u1ed9 c\u1ed5ng v\u01b0\u1ee3t tr\u1ed9i, hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng cao v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t.<\/p><\/li>\n<\/ul>\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\/3db779fd851543ba9878c7c7dd14f4ad.jpg\" alt=\"CFP4 vs. QSFP28: Which One Should You Choose?\" class=\"wp-image-2512\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3db779fd851543ba9878c7c7dd14f4ad.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3db779fd851543ba9878c7c7dd14f4ad-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3db779fd851543ba9878c7c7dd14f4ad-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3db779fd851543ba9878c7c7dd14f4ad-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3db779fd851543ba9878c7c7dd14f4ad-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>N\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng m\u1edbi ho\u1eb7c l\u00ean k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p linh ho\u1ea1t, QSFP28 r\u00f5 r\u00e0ng l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn v\u00e0 b\u1ec1n v\u1eefng cho t\u01b0\u01a1ng lai.<br\/>N\u1ebfu b\u1ea1n \u0111ang duy tr\u00ec m\u1ed9t h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng ho\u1eb7c v\u1eadn chuy\u1ec3n k\u1ebf th\u1eeba, CFP4 c\u00f3 th\u1ec3 v\u1eabn ph\u00f9 h\u1ee3p, nh\u01b0ng n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 c\u00f4ng ngh\u1ec7 chuy\u1ec3n ti\u1ebfp ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u1ed9 tr\u00ecnh ph\u00e1t tri\u1ec3n.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i, xu h\u01b0\u1edbng ng\u00e0nh l\u00e0 d\u1ee9t kho\u00e1t: c\u00e1c m\u1ea1ng \u0111ang d\u1ea7n chu\u1ea9n h\u00f3a quanh QSFP28 v\u00e0 c\u00e1c h\u1ec7 s\u1ed1 h\u00ecnh th\u1ee9c c\u00f3 m\u1eadt \u0111\u1ed9 cao h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\ud83d\udd17 B\u1ea1n c\u1ea7n gi\u1ea3i ph\u00e1p quang h\u1ecdc 100G \u0111\u00e1ng tin c\u1eady?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ecm c\u00e1c m\u00f4-\u0111un quang h\u1ecdc v\u00e0 gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>, n\u01a1i cung c\u1ea5p \u0111a d\u1ea1ng c\u00e1c s\u1ea3n ph\u1ea9m quang h\u1ecdc QSFP28 v\u00e0 li\u00ean quan nh\u1eb1m h\u1ed7 tr\u1ee3 tri\u1ec3n khai trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 vi\u1ec5n th\u00f4ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh CFP4 v\u00e0 QSFP28 theo k\u00edch th\u01b0\u1edbc, c\u00f4ng su\u1ea5t, m\u1eadt \u0111\u1ed9 v\u00e0 m\u1ee9c \u0111\u1ed9 ph\u00f9 h\u1ee3p tri\u1ec3n khai. T\u00ecm hi\u1ec3u m\u00f4-\u0111un 100G n\u00e0o ph\u00f9 h\u1ee3p h\u01a1n cho trung t\u00e2m d\u1eef li\u1ec7u, vi\u1ec5n th\u00f4ng v\u00e0 n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng.<\/p>","protected":false},"author":1,"featured_media":2513,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[13],"class_list":["post-2514","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-100g-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2514","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=2514"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2514\/revisions"}],"predecessor-version":[{"id":10704,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2514\/revisions\/10704"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2513"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}