{"id":2913,"date":"2026-03-24T00:00:00","date_gmt":"2026-03-24T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/sfp28-standard-explained-25g-vs-sfp-plus-guide\/"},"modified":"2026-06-22T03:49:42","modified_gmt":"2026-06-22T03:49:42","slug":"sfp28-standard-explained-25g-vs-sfp-plus-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/sfp28-standard-explained-25g-vs-sfp-plus-guide","title":{"rendered":"Gi\u1ea3i Th\u00edch Chu\u1ea9n SFP28: \u00dd Ngh\u0129a 25G v\u00e0 Kh\u00e1c Bi\u1ec7t v\u1edbi SFP+"},"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\/844662cdb0c8453488a63dfd786231d3.jpg\" alt=\"SFP28 Standard Explained\" class=\"wp-image-2901\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/844662cdb0c8453488a63dfd786231d3.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/844662cdb0c8453488a63dfd786231d3-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/844662cdb0c8453488a63dfd786231d3-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/844662cdb0c8453488a63dfd786231d3-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/844662cdb0c8453488a63dfd786231d3-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 m\u1ea1ng doanh nghi\u1ec7p ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng quy m\u00f4, nhu c\u1ea7u v\u1ec1 k\u1ebft n\u1ed1i nhanh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n \u0111\u00e3 d\u1eabn \u0111\u1ebfn vi\u1ec7c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i ti\u00eau chu\u1ea9n SFP28. \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 Ethernet 25 Gigabit (25GbE), SFP28 \u0111\u1ea1i di\u1ec7n cho m\u1ed9t b\u01b0\u1edbc ti\u1ebfn quan tr\u1ecdng v\u01b0\u1ee3t ra ngo\u00e0i c\u00e1c gi\u1ea3i ph\u00e1p 10G truy\u1ec1n th\u1ed1ng, cung c\u1ea5p b\u0103ng th\u00f4ng cao h\u01a1n m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng hay m\u1eadt \u0111\u1ed9 c\u1ed5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, ti\u00eau chu\u1ea9n SFP28 x\u00e1c \u0111\u1ecbnh m\u1ed9t d\u1ea1ng b\u1ed9 thu ph\u00e1t nh\u1ecf g\u1ecdn, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491665.htm\">c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 <strong>25 Gbps qua k\u1ebft n\u1ed1i s\u1ee3i quang ho\u1eb7c \u0111\u1ed3ng<\/strong>. Ti\u00eau chu\u1ea9n n\u00e0y k\u1ebf th\u1eeba thi\u1ebft k\u1ebf SFP+ quen thu\u1ed9c nh\u01b0ng gi\u1edbi thi\u1ec7u hi\u1ec7u n\u0103ng \u0111i\u1ec7n n\u00e2ng cao, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i nh\u01b0 trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 ki\u1ebfn tr\u00fac spine-leaf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng t\u00ecm ki\u1ebfm c\u1ee5m t\u1eeb \u201cti\u00eau chu\u1ea9n SFP28\u201d kh\u00f4ng ch\u1ec9 nh\u1eb1m m\u1ee5c \u0111\u00edch tra \u0111\u1ecbnh ngh\u0129a \u2014 h\u1ecd mu\u1ed1n hi\u1ec3u r\u00f5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP28 th\u1ef1c ch\u1ea5t c\u00f3 ngh\u0129a l\u00e0 g\u00ec<\/p><\/li><li><p>C\u00e1ch so s\u00e1nh SFP28 v\u1edbi SFP+<\/p><\/li><li><p>Li\u1ec7u n\u00f3 s\u1eed d\u1ee5ng s\u1ee3i quang hay \u0111\u1ed3ng<\/p><\/li><li><p>Khi n\u00e0o n\u00ean tri\u1ec3n khai n\u00f3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c nh\u1eefng c\u00e2u h\u1ecfi tr\u00ean b\u1eb1ng c\u00e1c gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng, c\u00f3 c\u1ea5u tr\u00fac, t\u1ed1i \u01b0u h\u00f3a c\u1ea3 cho ng\u01b0\u1eddi \u0111\u1ecdc v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm d\u1ef1a tr\u00ean AI.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1ea1n S\u1ebd H\u1ecdc \u0110\u01b0\u1ee3c G\u00ec Trong H\u01b0\u1edbng D\u1eabn N\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd n\u1eafm \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng v\u1ec1 <strong>ti\u00eau chu\u1ea9n SFP28<\/strong> v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong m\u1ea1ng 25G<\/p><\/li><li><p>So s\u00e1nh th\u1ef1c t\u1ebf gi\u1eefa <strong>SFP28 v\u00e0 SFP+<\/strong><\/p><\/li><li><p>Hi\u1ec3u bi\u1ebft v\u1ec1 <strong>c\u00e1c t\u00f9y ch\u1ecdn SFP28 d\u00f9ng s\u1ee3i quang ho\u1eb7c \u0111\u1ed3ng<\/strong><\/p><\/li><li><p>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh, c\u00e1c y\u1ebfu t\u1ed1 t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/p><\/li><li><p>Nh\u1eefng th\u00f4ng tin h\u00e0nh \u0111\u1ed9ng gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p SFP28 ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n l\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng, chuy\u00ean gia t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng hay chuy\u00ean vi\u00ean mua s\u1eafm, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t khi tri\u1ec3n khai <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28 25G<\/a> k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>Ti\u00eau chu\u1ea9n SFP28 L\u00e0 G\u00ec? (\u0110\u1ecbnh ngh\u0129a &amp; T\u1ed5ng quan v\u1ec1 25G)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 (Small Form-Factor Pluggable 28) l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ea1ng Ethernet 25 Gigabit (25GbE). N\u00f3 s\u1eed d\u1ee5ng c\u00f9ng k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-form-factor-compatibility-standards-guide\/\">y\u1ebfu t\u1ed1 h\u00ecnh d\u1ea1ng<\/a> nh\u01b0 SFP+, nh\u01b0ng \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 25 Gbps tr\u00ean m\u1ed7i k\u00eanh, nh\u1edd \u0111\u00f3 tr\u1edf th\u00e0nh m\u1ed9t b\u1ea3n n\u00e2ng c\u1ea5p hi\u1ec7u qu\u1ea3 cao cho c\u00e1c m\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i.<\/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\/1ad03da8c8fc479f9b8e9be0d6fdb817.jpg\" alt=\"What Is the SFP28 Standard?\" class=\"wp-image-2902\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ad03da8c8fc479f9b8e9be0d6fdb817.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ad03da8c8fc479f9b8e9be0d6fdb817-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ad03da8c8fc479f9b8e9be0d6fdb817-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ad03da8c8fc479f9b8e9be0d6fdb817-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1ad03da8c8fc479f9b8e9be0d6fdb817-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch Ho\u1ea1t \u0110\u1ed9ng C\u1ee7a Ti\u00eau Chu\u1ea9n SFP28 (T\u00ean g\u1ecdi, T\u1ed1c \u0111\u1ed9 v\u00e0 Y\u1ebfu t\u1ed1 H\u00ecnh d\u1ea1ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP28 \u0111\u1ea1i di\u1ec7n cho b\u01b0\u1edbc ti\u1ebfn h\u00f3a ti\u1ebfp theo sau <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a>, duy tr\u00ec c\u00f9ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd trong khi t\u0103ng \u0111\u00e1ng k\u1ec3 th\u00f4ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u1eeb 10 Gbps l\u00ean 25 Gbps. C\u1ea3i ti\u1ebfn n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1edd t\u00edn hi\u1ec7u \u0111i\u1ec7n n\u00e2ng cao v\u00e0 hi\u1ec7u su\u1ea5t k\u00eanh \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng truy\u1ec1n t\u1ea3i nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng hay di\u1ec7n t\u00edch ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Con s\u1ed1 \u201c28\u201d trong SFP28 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u x\u1ea5p x\u1ec9 (~28 Gbps), cho ph\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng l\u01b0\u1ee3ng 25GbE hi\u1ec7u qu\u1ea3 sau khi tr\u1eeb \u0111i chi ph\u00ed m\u00e3 h\u00f3a. Thi\u1ebft k\u1ebf n\u00e0y ph\u1ea3n \u00e1nh xu h\u01b0\u1edbng ng\u00e0nh chuy\u1ec3n sang truy\u1ec1n d\u1eabn t\u1ed1c \u0111\u1ed9 cao tr\u00ean m\u1ed9t k\u00eanh duy nh\u1ea5t, c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p \u0111a k\u00eanh c\u0169 h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u0110\u1eb7c \u0110i\u1ec3m Ch\u00ednh C\u1ee7a Y\u1ebfu T\u1ed1 H\u00ecnh D\u00e1ng SFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac v\u00e0 tri\u1ec3n khai, c\u00e1c module SFP28 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 thay n\u00f3ng<\/strong> \u0111\u1ec3 d\u1ec5 b\u1ea3o tr\u00ec v\u00e0 n\u00e2ng c\u1ea5p<\/p><\/li><li><p><strong>M\u1eadt \u0111\u1ed9 c\u1ed5ng cao<\/strong>, l\u00fd t\u01b0\u1edfng cho c\u00e1c switch trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p><strong>H\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn<\/strong>, bao g\u1ed3m s\u1ee3i quang v\u00e0 c\u00e1p DAC \u0111\u1ed3ng<\/p><\/li><li><p><strong>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i Gbps<\/strong> so v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec Sao SFP28 Quan Tr\u1ecdng Trong C\u00e1c M\u1ea1ng 25G Hi\u1ec7n \u0110\u1ea1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng hi\u1ec7u n\u0103ng cao ng\u00e0y nay, ti\u00eau chu\u1ea9n SFP28 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c t\u1ea1o n\u1ec1n t\u1ea3ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed. N\u00f3 \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><strong>Ki\u1ebfn tr\u00fac x\u01b0\u01a1ng s\u1ed1ng\u2013l\u00e1 (spine-leaf) c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u<\/strong><\/p><\/li><li><p><strong>K\u1ebft n\u1ed1i 25G t\u1eeb m\u00e1y ch\u1ee7 t\u1edbi switch<\/strong><\/p><\/li><li><p><strong>Tri\u1ec3n khai \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn<\/strong><\/p><\/li><li><p><strong>High-performance computing (HPC)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd k\u1ebft h\u1ee3p b\u0103ng th\u00f4ng cao h\u01a1n, thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ea3i thi\u1ec7n, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478238.htm\">SFP28<\/a> \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho c\u00e1c m\u1ea1ng Ethernet th\u1ebf h\u1ec7 ti\u1ebfp theo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>SFP28 L\u00e0 Vi\u1ebft T\u1eaft C\u1ee7a G\u00ec? (Gi\u1ea3i Th\u00edch \u0110\u01a1n Gi\u1ea3n)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Small Form-Factor Pluggable 28, m\u1ed9t \u0111\u1ecbnh d\u1ea1ng b\u1ed9 thu ph\u00e1t nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft n\u1ed1i Ethernet 25 Gigabit (25GbE). N\u00f3 x\u00e1c \u0111\u1ecbnh c\u1ea3 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a module v\u00e0 giao di\u1ec7n \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/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\/e8f01228220e4bb3b3371d3807ee5331.jpg\" alt=\"What Does SFP28 Stand For?\" class=\"wp-image-2903\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e8f01228220e4bb3b3371d3807ee5331.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e8f01228220e4bb3b3371d3807ee5331-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e8f01228220e4bb3b3371d3807ee5331-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e8f01228220e4bb3b3371d3807ee5331-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e8f01228220e4bb3b3371d3807ee5331-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Ph\u00e2n T\u00edch Thu\u1eadt Ng\u1eef \u201cSFP28\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7 ti\u00eau chu\u1ea9n SFP28, ta n\u00ean ph\u00e2n t\u00edch t\u1eebng th\u00e0nh ph\u1ea7n trong t\u00ean g\u1ecdi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u1ec7 s\u1ed1 d\u1ea1ng nh\u1ecf (<i>Small Form-Factor<\/i>)<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-form-factor-compatibility-standards-guide\/\"><strong>SFF<\/strong><\/a><strong>)<\/strong> \u2192 \u0110\u1ec1 c\u1eadp \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, cho ph\u00e9p m\u1eadt \u0111\u1ed9 c\u1ed5ng cao tr\u00ean switch v\u00e0 m\u00e1y ch\u1ee7<\/p><\/li><li><p><strong>C\u00f3 th\u1ec3 c\u1eafm r\u1eddi (Pluggable)<\/strong> \u2192 Cho bi\u1ebft module c\u00f3 th\u1ec3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/are-sfp-modules-hot-swappable-safe-sfp-hot-swap-guide\/\"><strong>Cat5e\/Cat6 Ethernet<\/strong><\/a>, ngh\u0129a l\u00e0 c\u00f3 th\u1ec3 c\u1eafm v\u00e0o ho\u1eb7c r\u00fat ra m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft h\u1ec7 th\u1ed1ng<\/p><\/li><li><p><strong>28<\/strong> \u2192 \u0110\u1ea1i di\u1ec7n cho <strong>t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u x\u1ea5p x\u1ec9 (~28 Gbps)<\/strong>, h\u1ed7 tr\u1ee3 th\u00f4ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u th\u1ef1c t\u1ebf 25 Gbps sau khi t\u00ednh \u0111\u1ebfn chi ph\u00ed m\u00e3 h\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean n\u00e0y tu\u00e2n theo qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n tr\u01b0\u1edbc \u0111\u00f3 nh\u01b0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\">SFP (1G)<\/a> and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\">SFP+ (10G)<\/a>, khi\u1ebfn SFP28 tr\u1edf th\u00e0nh b\u01b0\u1edbc ti\u1ebfn t\u1ef1 nhi\u00ean trong thi\u1ebft k\u1ebf giao di\u1ec7n Ethernet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec Sao Con S\u1ed1 \u201c28\u201d L\u1ea1i Quan Tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Con s\u1ed1 \u201c28\u201d trong SFP28 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 t\u1ed1c \u0111\u1ed9 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c l\u00e0 28 Gbps \u2014 thay v\u00e0o \u0111\u00f3, n\u00f3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00f4. Sau khi t\u00ednh \u0111\u1ebfn chi ph\u00ed m\u00e3 h\u00f3a, t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u hi\u1ec7u d\u1ee5ng \u0111\u1ea1t 25 Gbps, v\u00ec v\u1eady SFP28 th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n Ethernet 25G (25GbE).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u00fd \u0111\u1ecbnh t\u00ecm ki\u1ebfm, b\u1edfi v\u00ec nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng gi\u1ea3 \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP28 = t\u1ed1c \u0111\u1ed9 28G (sai)<\/p><\/li><li><p>SFP28 = th\u00f4ng l\u01b0\u1ee3ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c 25G (\u0111\u00fang)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch SFP28 Ph\u00f9 H\u1ee3p V\u1edbi Qu\u00e1 Tr\u00ecnh Ti\u1ebfn H\u00f3a C\u1ee7a Ethernet<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 l\u00e0 m\u1ed9t ph\u1ea7n trong ti\u1ebfn tr\u00ecnh ph\u00e1t tri\u1ec3n r\u1ed9ng h\u01a1n c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SFP \u2192 1 Gbps<\/strong><\/p><\/li><li><p><strong>SFP+ \u2192 10 Gbps<\/strong><\/p><\/li><li><p><strong>SFP28 \u2192 25 Gbps<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch duy tr\u00ec c\u00f9ng m\u1ed9t k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd trong khi t\u0103ng t\u1ed1c \u0111\u1ed9, SFP28 cho ph\u00e9p c\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng n\u00e2ng c\u1ea5p hi\u1ec7u n\u0103ng m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf l\u1ea1i b\u1ed1 tr\u00ed ph\u1ea7n c\u1ee9ng, \u0111\u00e2y l\u00e0 l\u00fd do ch\u00ednh khi\u1ebfn n\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, SFP28 l\u00e0 m\u1ed9t m\u00f4-\u0111un nh\u1ecf d\u1ea1ng c\u1eafm v\u00e0o, cho ph\u00e9p k\u1ebft n\u1ed1i m\u1ea1ng 25G. N\u00f3 k\u1ebft h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 cao (25 Gbps)<\/p><\/li><li><p>K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn (gi\u1ed1ng SFP+)<\/p><\/li><li><p>Tri\u1ec3n khai linh ho\u1ea1t (t\u00f9y ch\u1ecdn s\u1ee3i quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn SFP28 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 m\u1edf r\u1ed9ng quy m\u00f4 t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u m\u1ea1ng b\u0103ng th\u00f4ng cao ng\u00e0y nay.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>C\u00e1c ti\u00eau chu\u1ea9n v\u00e0 \u0111\u1eb7c t\u1ea3 SFP28 ph\u1ed5 bi\u1ebfn<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP28 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i truy\u1ec1n d\u1eabn Ethernet 25 Gigabit (25GbE), m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c lo\u1ea1i s\u1ee3i quang kh\u00e1c nhau, kho\u1ea3ng c\u00e1ch v\u00e0 k\u1ecbch b\u1ea3n tri\u1ec3n khai. C\u00e1c ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 25GBASE-SR v\u00e0 25GBASE-LR, bao ph\u1ee7 truy\u1ec1n th\u00f4ng quang t\u1ea7m ng\u1eafn v\u00e0 t\u1ea7m xa.<\/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\/183a398a9fbc44568a3445c4c5b29aa9.jpg\" alt=\"Common SFP28 Standards\" class=\"wp-image-2904\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/183a398a9fbc44568a3445c4c5b29aa9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/183a398a9fbc44568a3445c4c5b29aa9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/183a398a9fbc44568a3445c4c5b29aa9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/183a398a9fbc44568a3445c4c5b29aa9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/183a398a9fbc44568a3445c4c5b29aa9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473141.htm\">25GBASE-LR<\/a> (T\u1ea7m ng\u1eafn, s\u1ee3i quang \u0111a mode)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">25GBASE-SR \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch ng\u1eafn s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a mode (MMF) v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 850 nm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u c\u1eb7p m\u00f4-\u0111un c\u00f3 b\u01b0\u1edbc s\u00f3ng b\u1ed5 sung<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Lo\u1ea1i s\u1ee3i quang:<\/strong> C\u00e1p s\u1ee3i quang \u0111a mode (OM3 \/ OM4)<\/p><\/li><li><p><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> 850 nm<\/p><\/li><li><p><strong>\u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa \u0111\u00e1ng tin c\u1eady \u0111\u1ed3ng th\u1eddi duy tr\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi c\u00e1c<\/strong><\/p><ul><li><p>OM3: l\u00ean \u0111\u1ebfn ~70\u2013100 m\u00e9t<\/p><\/li><li><p>OM4: l\u00ean \u0111\u1ebfn ~100 m\u00e9t<\/p><\/li><\/ul><\/li><li><p><strong>\u0110\u1ea7u n\u1ed1i:<\/strong> LC hai chi\u1ec1u<\/p><\/li><li><p><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p><ul><li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u1ee7 m\u00e1y trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-tor-top-of-rack-switch\/\">Tr\u00ean c\u00f9ng m\u1ed9t rack <\/a>T\u1eeb b\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ea7u t\u1ee7 (ToR) \u0111\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch t\u1eadp trung<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng m\u1eadt \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao n\u00ean ch\u1ecdn SR:<\/strong><br\/>N\u00f3 mang l\u1ea1i chi ph\u00ed th\u1ea5p v\u00e0 hi\u1ec7u su\u1ea5t cao cho c\u00e1c tri\u1ec3n khai kho\u1ea3ng c\u00e1ch ng\u1eafn b\u00ean trong trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\">25GBASE-ER<\/a> (T\u1ea7m xa, s\u1ee3i quang \u0111\u01a1n mode)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">25GBASE-LR \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF), ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u c\u1eb7p m\u00f4-\u0111un c\u00f3 b\u01b0\u1edbc s\u00f3ng b\u1ed5 sung<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Lo\u1ea1i s\u1ee3i quang:<\/strong> S\u1ee3i quang \u0111\u01a1n mode (OS2)<\/p><\/li><li><p><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> 1310 nm<\/p><\/li><li><p><strong>\u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa \u0111\u00e1ng tin c\u1eady \u0111\u1ed3ng th\u1eddi duy tr\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi c\u00e1c<\/strong> l\u00ean \u0111\u1ebfn <strong>10 kil\u00f4m\u00e9t<\/strong><\/p><\/li><li><p><strong>\u0110\u1ea7u n\u1ed1i:<\/strong> LC hai chi\u1ec1u<\/p><\/li><li><p><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p><ul><li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0<\/p><\/li><li><p>M\u1ea1ng khu\u00f4n vi\u00ean<\/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\/\">Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u<\/a> (DCI)<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao n\u00ean ch\u1ecdn LR:<\/strong><br\/>N\u00f3 cho ph\u00e9p truy\u1ec1n th\u00f4ng kho\u1ea3ng c\u00e1ch xa \u0111\u00e1ng tin c\u1eady v\u1edbi t\u1ed5n hao t\u00edn hi\u1ec7u t\u1ed1i thi\u1ec3u, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c li\u00ean k\u1ebft l\u00f5i m\u1ea1ng v\u00e0 m\u1ea1ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >So s\u00e1nh kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa SR v\u00e0 LR ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 chi ph\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng <strong>25GBASE-LR<\/strong> khi:<\/p><ul><li><p>Kho\u1ea3ng c\u00e1ch trong ph\u1ea1m vi 100 m\u00e9t<\/p><\/li><li><p>\u0110\u00e3 tri\u1ec3n khai s\u1ee3i quang \u0111a mode<\/p><\/li><li><p>T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u<\/p><\/li><\/ul><\/li><li><p>S\u1eed d\u1ee5ng <strong>25GBASE-ER<\/strong> khi:<\/p><ul><li><p>Kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 100 m\u00e9t<\/p><\/li><li><p>C\u1ea7n k\u1ebft n\u1ed1i t\u1ea7m xa (l\u00ean \u0111\u1ebfn 10 km)<\/p><\/li><li><p>B\u1ea1n \u0111ang s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang \u0111\u01a1n mode<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea3ng tra c\u1ee9u nhanh: C\u00e1c ti\u00eau chu\u1ea9n quang h\u1ecdc SFP28<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc s\u00f3ng<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>25GBASE-LR<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MMF (OM3\/OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>70\u2013100 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn t\u1ea1i trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>25GBASE-ER<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n mode (SMF, OS2)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ebfn 10 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa &amp; trong khu\u00f4n vi\u00ean<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 nh\u1eefng ti\u00eau chu\u1ea9n SFP28 ph\u1ed5 bi\u1ebfn n\u00e0y, k\u1ef9 s\u01b0 m\u1ea1ng c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn m\u00f4-\u0111un ph\u00f9 h\u1ee3p nh\u1ea5t d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch, chi ph\u00ed v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u trong c\u00e1c tri\u1ec3n khai 25G.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>SFP28 so v\u1edbi SFP+: Nh\u1eefng kh\u00e1c bi\u1ec7t quan tr\u1ecdng b\u1ea1n c\u1ea7n bi\u1ebft<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 v\u00e0 SFP+ chia s\u1ebb c\u00f9ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd, nh\u01b0ng SFP28 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 25 Gbps trong khi SFP+ ch\u1ec9 h\u1ed7 tr\u1ee3 10 Gbps. SFP28 s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u \u0111i\u1ec7n n\u00e2ng cao \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao h\u01a1n, trong khi SFP+ b\u1ecb gi\u1edbi h\u1ea1n \u1edf hi\u1ec7u n\u0103ng 10 G. T\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 v\u00e0 c\u1ea5u h\u00ecnh c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344.jpg\" alt=\"SFP28 vs. SFP+: Key Differences You Must Know\" class=\"wp-image-2905\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5b9cf90cf10642e780e4551f782e3344-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ed1c \u0111\u1ed9: 25 G so v\u1edbi 10 G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 b\u1ea3n nh\u1ea5t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/blog\/sfp-vs-sfp-plus-vs-sfp28.htm\">kh\u00e1c bi\u1ec7t gi\u1eefa SFP28 v\u00e0 SFP+<\/a> l\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SFP+ \u2192 M\u1ea1ng Ethernet Gigabit 10 (10 Gbps)<\/strong><\/p><\/li><li><p><strong>SFP28 \u2192 M\u1ea1ng Ethernet Gigabit 25 (25 Gbps)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 cung c\u1ea5p b\u0103ng th\u00f4ng cao h\u01a1n 2,5 l\u1ea7n m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc c\u1ed5ng, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i c\u00f3 m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Thi\u1ebft k\u1ebf \u0111i\u1ec7n: T\u00edn hi\u1ec7u n\u00e2ng cao so v\u1edbi t\u00edn hi\u1ec7u 10G truy\u1ec1n th\u1ed1ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 SFP28 v\u00e0 SFP+ \u0111\u1ec1u s\u1eed d\u1ee5ng ki\u1ebfn tr\u00fac m\u1ed9t k\u00eanh, nh\u01b0ng kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf hi\u1ec7u qu\u1ea3 t\u00edn hi\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SFP+<\/strong> s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u 10G truy\u1ec1n th\u1ed1ng<\/p><\/li><li><p><strong>SFP28<\/strong> s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1ed1c \u0111\u1ed9 cao h\u01a1n (~25\u201328 Gbps tr\u00ean m\u1ed7i k\u00eanh)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00edn hi\u1ec7u c\u1ea3i ti\u1ebfn n\u00e0y cho ph\u00e9p SFP28 \u0111\u1ea1t th\u00f4ng l\u01b0\u1ee3ng cao h\u01a1n trong khi v\u1eabn duy tr\u00ec thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng v\u00e0 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch gi\u1eefa SFP28 v\u00e0 SFP+ ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb m\u1ea1ng (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/a>\/<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">NIC<\/a>):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec1u c\u1ed5ng SFP28 h\u1ed7 tr\u1ee3 m\u00f4-\u0111un SFP+, cho ph\u00e9p gi\u1ea3m t\u1ed1c v\u1ec1 m\u1ee9c 10G<\/p><\/li><li><p>Tuy nhi\u00ean, c\u1ed5ng SFP+ th\u01b0\u1eddng KH\u00d4NG h\u1ed7 tr\u1ee3 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491477.htm\">C\u00e1c m\u00f4-\u0111un SFP28<\/a> \u1edf t\u1ed1c \u0111\u1ed9 25G<\/p><\/li><li><p>M\u1ed9t s\u1ed1 n\u1ec1n t\u1ea3ng cho ph\u00e9p gi\u1ea3m t\u1ed1c m\u00f4-\u0111un SFP28 xu\u1ed1ng 10G, nh\u01b0ng \u0111i\u1ec1u n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u00f5 r\u00e0ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng \u0111i\u1ec7p ch\u00ednh:<\/strong><br\/>SFP28 mang l\u1ea1i t\u00ednh linh ho\u1ea1t h\u01b0\u1edbng t\u1edbi t\u01b0\u01a1ng lai, nh\u01b0ng t\u00ednh t\u01b0\u01a1ng th\u00edch kh\u00f4ng lu\u00f4n hai chi\u1ec1u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: Khi n\u00e0o n\u00ean ch\u1ecdn SFP28 hay SFP+<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ecdn SFP+ (10G) khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u00e2ng c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u0169<\/p><\/li><li><p>Y\u00eau c\u1ea7u b\u0103ng th\u00f4ng \u1edf m\u1ee9c v\u1eeba ph\u1ea3i<\/p><\/li><li><p>\u0110\u1ed9 nh\u1ea1y v\u1ec1 chi ph\u00ed cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ecdn SFP28 (25G) khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e2y d\u1ef1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi<\/p><\/li><li><p>C\u1ea7n th\u00f4ng l\u01b0\u1ee3ng cao h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng<\/p><\/li><li><p>T\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea3ng so s\u00e1nh: SFP28 so v\u1edbi SFP+<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 237px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP+ (10G)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP28 (25G)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed1i \u0111a<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10 Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25 Gbps<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>H\u1ec7 s\u1ed1 d\u1ea1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ed9 thu ph\u00e1t nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm r\u1eddi<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1ed1ng nh\u01b0 SFP+<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>C\u00e1c k\u00eanh \u0111i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ed9t k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ed9t l\u00e0n (t\u00edn hi\u1ec7u n\u00e2ng cao)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>T\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~10 Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~25\u201328 Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ea1n ch\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u1eddng h\u1ed7 tr\u1ee3 c\u00e1c module SFP+<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Doanh nghi\u1ec7p, h\u1ec7 th\u1ed1ng k\u1ebf th\u1eeba<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao (HPC)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"237\"><p>Chi ph\u00ed tr\u00ean m\u1ed7i Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (hi\u1ec7u qu\u1ea3 h\u01a1n)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\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 SFP+ v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ea1ng 10G, SFP28 l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho c\u00e1c tri\u1ec3n khai 25G hi\u1ec7n \u0111\u1ea1i, mang l\u1ea1i hi\u1ec7u n\u0103ng cao h\u01a1n, hi\u1ec7u qu\u1ea3 t\u1ed1t h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng m\u1ea1nh m\u1ebd h\u01a1n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u m\u1ea1ng trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>SFP28 d\u00f9ng c\u00e1p quang hay c\u00e1p \u0111\u1ed3ng? (Gi\u1ea3i th\u00edch c\u00e1c lo\u1ea1i module)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 h\u1ed7 tr\u1ee3 c\u1ea3 k\u1ebft n\u1ed1i c\u00e1p quang v\u00e0 c\u00e1p \u0111\u1ed3ng. N\u00f3 kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n \u1edf m\u1ed9t m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn\u2014SFP28 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/direct-attach-cables-dac-in-networking\/\">SFF-8472 <\/a>(c\u00e1p \u0111\u1ed3ng), AOC (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/aoc-explained-active-optical-cable-benefits-uses-advancements-guide\/\">c\u00e1p quang ch\u1ee7 \u0111\u1ed9ng<\/a>) ho\u1eb7c b\u1ed9 thu ph\u00e1t quang (SR\/LR) t\u00f9y theo y\u00eau c\u1ea7u v\u1ec1 kho\u1ea3ng c\u00e1ch, chi ph\u00ed v\u00e0 hi\u1ec7u n\u0103ng.<\/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\/5d6e758522874ce0bb3900517a88f008.jpg\" alt=\"Is SFP28 Fiber or Copper? (Module Types Explained)\" class=\"wp-image-2906\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5d6e758522874ce0bb3900517a88f008.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5d6e758522874ce0bb3900517a88f008-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5d6e758522874ce0bb3900517a88f008-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5d6e758522874ce0bb3900517a88f008-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5d6e758522874ce0bb3900517a88f008-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >SFP28 DAC (C\u00e1p \u0111\u1ed3ng g\u1eafn tr\u1ef1c ti\u1ebfp)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p \u0111\u1ed3ng g\u1eafn tr\u1ef1c ti\u1ebfp (DAC) l\u00e0 c\u00e1c c\u00e1p \u0111\u1ed3ng c\u1ed1 \u0111\u1ecbnh c\u00f3 \u0111\u1ea7u n\u1ed1i SFP28 \u1edf c\u1ea3 hai \u0111\u1ea7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u c\u1eb7p m\u00f4-\u0111un c\u00f3 b\u01b0\u1edbc s\u00f3ng b\u1ed5 sung<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ph\u01b0\u01a1ng ti\u1ec7n:<\/strong> \u0110\u1ed3ng<\/p><\/li><li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong> Th\u01b0\u1eddng t\u1ed1i \u0111a <strong>3\u20135 m\u00e9t<\/strong><\/p><\/li><li><p><strong>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng:<\/strong> R\u1ea5t th\u1ea5p<\/p><\/li><li><p><strong>Chi ph\u00ed:<\/strong> Ph\u01b0\u01a1ng \u00e1n ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7 t\u1edbi switch trong c\u00f9ng m\u1ed9t t\u1ee7 rack<\/p><\/li><li><p>Li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch ng\u1eafn trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khi n\u00e0o n\u00ean ch\u1ecdn DAC:<\/strong><br\/>Ch\u1ecdn DAC khi b\u1ea1n c\u1ea7n chi ph\u00ed c\u1ef1c th\u1ea5p, \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn trong c\u00f9ng m\u1ed9t t\u1ee7 rack ho\u1eb7c gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb li\u1ec1n k\u1ec1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >SFP28 AOC (C\u00e1p quang ch\u1ee7 \u0111\u1ed9ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p quang ch\u1ee7 \u0111\u1ed9ng (AOC) t\u00edch h\u1ee3p s\u1ee3i quang v\u1edbi b\u1ed9 thu ph\u00e1t t\u00edch h\u1ee3p \u1edf c\u1ea3 hai \u0111\u1ea7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u c\u1eb7p m\u00f4-\u0111un c\u00f3 b\u01b0\u1edbc s\u00f3ng b\u1ed5 sung<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ph\u01b0\u01a1ng ti\u1ec7n:<\/strong> Quang (c\u00e1p t\u00edch h\u1ee3p)<\/p><\/li><li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong> Th\u00f4ng th\u01b0\u1eddng <strong>10\u2013100 m\u00e9t<\/strong><\/p><\/li><li><p><strong>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng:<\/strong> Trung b\u00ecnh (cao h\u01a1n DAC, nh\u01b0ng th\u1ea5p h\u01a1n gi\u1ea3i ph\u00e1p quang \u0111\u1ea7y \u0111\u1ee7 trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p)<\/p><\/li><li><p><strong>D\u1ec5 s\u1eed d\u1ee5ng:<\/strong> C\u1eafm v\u00e0o l\u00e0 s\u1eed d\u1ee5ng ngay (plug-and-play)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u1ee7 rack trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>C\u00e1c li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao kho\u1ea3ng c\u00e1ch trung b\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khi n\u00e0o n\u00ean ch\u1ecdn AOC:<\/strong><br\/>S\u1eed d\u1ee5ng AOC khi b\u1ea1n c\u1ea7n t\u1ea7m xa h\u01a1n DAC nh\u01b0ng \u01b0a chu\u1ed9ng c\u00e1ch tri\u1ec3n khai \u0111\u01a1n gi\u1ea3n h\u01a1n so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng ri\u00eang l\u1ebb c\u00e1c module quang v\u00e0 c\u00e1p n\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 thu ph\u00e1t quang SFP28 (SR &amp; LR)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473143.htm\">c\u00e1c module quang SFP28<br><\/a> cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i linh ho\u1ea1t v\u00e0 m\u1edf r\u1ed9ng nh\u1ea5t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 thu ph\u00e1t ri\u00eang bi\u1ec7t v\u00e0 c\u00e1p quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>25GBASE-SR (T\u1ea7m ng\u1eafn)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Lo\u1ea1i s\u1ee3i quang:<\/strong> \u0110a mode (MMF)<\/p><\/li><li><p><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> 850 nm<\/p><\/li><li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong> L\u00ean t\u1edbi ~100 m\u00e9t<\/p><\/li><li><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong> Li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn t\u1ea1i trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>25GBASE-LR (T\u1ea7m xa)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Lo\u1ea1i s\u1ee3i quang:<\/strong> \u0110\u01a1n mode (SMF)<\/p><\/li><li><p><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> 1310 nm<\/p><\/li><li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong> T\u1ed1i \u0111a <strong>10 km<\/strong><\/p><\/li><li><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong> K\u1ebft n\u1ed1i khu\u00f4n vi\u00ean v\u00e0 kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khi n\u00e0o n\u00ean ch\u1ecdn <\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476099.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a><strong>:<\/strong><br\/>Ch\u1ecdn module SR ho\u1eb7c LR khi b\u1ea1n c\u1ea7n t\u00ednh linh ho\u1ea1t t\u1ed1i \u0111a, kho\u1ea3ng c\u00e1ch xa h\u01a1n v\u00e0 ki\u1ebfn tr\u00fac m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch ch\u1ecdn lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n SFP28 ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 336px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>T\u00ecnh hu\u1ed1ng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u01b0\u01a1ng \u00e1n \u0111\u1ec1 xu\u1ea5t<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>C\u00f9ng m\u1ed9t t\u1ee7 rack (\u22645m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DAC (\u0111\u1ed3ng)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>T\u1eeb t\u1ee7 rack n\u00e0y sang t\u1ee7 rack kh\u00e1c (10\u2013100m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>AOC<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>Li\u00ean k\u1ebft c\u00e1p quang ng\u1eafn (\u2264100m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quang SR<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"336\"><p>Kho\u1ea3ng c\u00e1ch xa (l\u00ean \u0111\u1ebfn 10 km)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LR Quang h\u1ecdc<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n k\u1ebft n\u1ed1i linh ho\u1ea1t, kh\u00f4ng g\u1eafn b\u00f3 v\u1edbi m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n duy nh\u1ea5t. Vi\u1ec7c b\u1ea1n ch\u1ecdn c\u00e1p \u0111\u1ed3ng (DAC) hay c\u00e1p quang (AOC\/SR\/LR) ph\u1ee5 thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch, ng\u00e2n s\u00e1ch v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p tri\u1ec3n khai, khi\u1ebfn SFP28 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u t\u00ecnh hu\u1ed1ng m\u1ea1ng 25G kh\u00e1c nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 tri\u1ec3n khai SFP28<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP28 t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u1edbi c\u1ed5ng SFP28 v\u00e0 th\u01b0\u1eddng h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng ng\u01b0\u1ee3c tr\u1edf l\u1ea1i v\u1edbi c\u00e1c c\u1ed5ng SFP+ (10G), t\u00f9y thu\u1ed9c v\u00e0o b\u1ed9 chuy\u1ec3n m\u1ea1ch. Tuy nhi\u00ean, SFP28 kh\u00f4ng lu\u00f4n ch\u1ea1y \u0111\u01b0\u1ee3c \u1edf t\u1ed1c \u0111\u1ed9 25G tr\u00ean c\u00e1c c\u1ed5ng SFP+, v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c m\u1ea1nh v\u00e0o h\u1ed7 tr\u1ee3 v\u00e0 c\u1ea5u h\u00ecnh c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c.jpg\" alt=\"SFP28 Compatibility and Deployment Considerations\" class=\"wp-image-2907\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40edff50e7664084b85fcc2fcaf8801c-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch (h\u1ed7 tr\u1ee3 ph\u1ea7n c\u1ee9ng v\u00e0 c\u1ed5ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch SFP28 b\u1eaft \u0111\u1ea7u t\u1eeb ph\u1ea7n c\u1ee9ng b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c giao di\u1ec7n m\u1ea1ng. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng c\u00f3 th\u1ec3 c\u1eafm v\u1eadt l\u00fd module SFP28 \u0111\u1ec1u h\u1ed7 tr\u1ee3 hi\u1ec7u n\u0103ng \u0111\u1ea7y \u0111\u1ee7 25G.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u1ed5ng SFP28 g\u1ed1c<\/strong> \u2192 H\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 ho\u1ea1t \u0111\u1ed9ng 25GbE<\/p><\/li><li><p><strong>C\u1ed5ng \u0111a t\u1ed1c \u0111\u1ed9 (10G\/25G)<\/strong> \u2192 C\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng th\u01b0\u01a1ng l\u01b0\u1ee3ng gi\u1eefa t\u1ed1c \u0111\u1ed9 SFP+ v\u00e0 SFP28<\/p><\/li><li><p><strong>C\u1ed5ng ch\u1ec9 h\u1ed7 tr\u1ee3 SFP+<\/strong> \u2192 C\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn module SFP28 nh\u01b0ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 10G (n\u1ebfu \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491478.htm\">Cisco<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477932.htm\">Arista<\/a>, v\u00e0 c\u00e1c n\u1ec1n t\u1ea3ng d\u1ef1a tr\u00ean Mellanox \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi h\u1ed7 tr\u1ee3 SFP28 \u0111a t\u1ed1c \u0111\u1ed9 nh\u1eb1m tri\u1ec3n khai linh ho\u1ea1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi SFP+ (ho\u1ea1t \u0111\u1ed9ng \u1edf 10G)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 li\u1ec7u SFP28 c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c trong m\u00f4i tr\u01b0\u1eddng SFP+ hay kh\u00f4ng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, c\u1ed5ng SFP28 c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng ch\u1ebf \u0111\u1ed9 10G khi s\u1eed d\u1ee5ng module SFP+<\/p><\/li><li><p>M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng cho ph\u00e9p module SFP28 ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 10G (gi\u1ea3m t\u1ed1c)<\/p><\/li><li><p>Tuy nhi\u00ean, c\u1ed5ng SFP+ th\u01b0\u1eddng kh\u00f4ng th\u1ec3 n\u00e2ng c\u1ea5p l\u00ean t\u1ed1c \u0111\u1ed9 25G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn SFP28 tr\u1edf th\u00e0nh l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p t\u01b0\u01a1ng th\u00edch v\u1ec1 ph\u00eda tr\u01b0\u1edbc, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t ti\u00eau chu\u1ea9n hai chi\u1ec1u \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Li\u1ec7u SFP28 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong c\u1ed5ng SFP+? (L\u00e0m r\u00f5 quan tr\u1ecdng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u00ecnh d\u1ea1ng v\u1eadt l\u00fd gi\u1ed1ng nhau, n\u00ean vi\u1ec7c c\u1eafm v\u00e0o l\u00e0 kh\u1ea3 thi v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc<\/p><\/li><li><p>V\u1ec1 m\u1eb7t \u0111i\u1ec7n, hi\u1ec7u n\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o firmware v\u00e0 chipset c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ed1 c\u1ed5ng SFP+ c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i module SFP28<\/p><\/li><li><p>M\u1ed9t s\u1ed1 c\u1ed5ng kh\u00e1c c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn ch\u00fang nh\u01b0ng gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 \u1edf m\u1ee9c 10 Gbps<\/p><\/li><li><p>Ho\u1ea1t \u0111\u1ed9ng th\u1ef1c s\u1ef1 \u1edf t\u1ed1c \u0111\u1ed9 25G \u0111\u00f2i h\u1ecfi m\u1ed9t c\u1ed5ng h\u1ed7 tr\u1ee3 SFP28<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch theo nh\u00e0 cung c\u1ea5p (Cisco, Arista v\u00e0 c\u00e1c h\u00e3ng kh\u00e1c)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau tri\u1ec3n khai c\u00e1c ch\u00ednh s\u00e1ch x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng SFP28:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Cisco<\/strong> \u2192 Th\u01b0\u1eddng y\u00eau c\u1ea7u c\u00e1c module quang \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a ho\u1eb7c t\u01b0\u01a1ng th\u00edch tr\u1eeb khi \u0111\u00e3 m\u1edf kh\u00f3a<\/p><\/li><li><p><strong>Arista<\/strong> \u2192 H\u1ed7 tr\u1ee3 \u0111a nh\u00e0 cung c\u1ea5p linh ho\u1ea1t h\u01a1n tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng<\/p><\/li><li><p><strong>Mellanox\/NVIDIA<\/strong> \u2192 H\u1ed7 tr\u1ee3 natively m\u1ea1nh m\u1ebd cho m\u00f4i tr\u01b0\u1eddng SFP28 25G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng v\u1ec1 SEO v\u00e0 th\u1ef1c t\u1ebf:<br\/>\ud83d\udc49 \u201cT\u00ednh t\u01b0\u01a1ng th\u00edch SFP28 kh\u00f4ng mang t\u00ednh ph\u1ed5 qu\u00e1t\u2014m\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o ch\u00ednh s\u00e1ch c\u1ee7a nh\u00e0 cung c\u1ea5p.\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00f3a nh\u00e0 cung c\u1ea5p (vendor lock-in) so v\u1edbi c\u00e1c module b\u00ean th\u1ee9 ba<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477933.htm\"><strong>c\u00e1c m\u00f4-\u0111un OEM<br><\/strong><\/a><strong> (c\u00f3 nh\u00e3n hi\u1ec7u nh\u00e0 cung c\u1ea5p):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li><li><p>Chi ph\u00ed cao h\u01a1n<\/p><\/li><li><p>\u0110\u01b0\u1ee3c \u01b0u ti\u00ean trong c\u00e1c h\u1ee3p \u0111\u1ed3ng h\u1ed7 tr\u1ee3 doanh nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491663.htm\"><strong>C\u00e1c module SFP28 b\u00ean th\u1ee9 ba<\/strong><\/a><strong>:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed th\u1ea5p h\u01a1n<\/p><\/li><li><p>Ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i<\/p><\/li><li><p>C\u00f3 th\u1ec3 y\u00eau c\u1ea7u ghi \u0111\u00e8 th\u1ee7 c\u00f4ng t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u \u00e1p d\u1ee5ng c\u00e1c module b\u00ean th\u1ee9 ba \u0111\u1ec3 gi\u1ea3m chi ph\u00ed CAPEX trong khi v\u1eabn duy tr\u00ec hi\u1ec7u n\u0103ng 25G, nh\u01b0ng ph\u1ea3i ki\u1ec3m tra k\u1ef9 t\u00ednh t\u01b0\u01a1ng th\u00edch firmware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1eb9o tri\u1ec3n khai th\u1ef1c t\u1ebf cho m\u1ea1ng SFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai \u1ed5n \u0111\u1ecbnh chu\u1ea9n SFP28, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lu\u00f4n x\u00e1c minh ma tr\u1eadn t\u01b0\u01a1ng th\u00edch switch tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li><li><p>Ph\u00f9 h\u1ee3p lo\u1ea1i module (SR\/LR\/DAC\/AOC) v\u1edbi y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch<\/p><\/li><li><p>Tr\u00e1nh k\u1ebft h\u1ee3p c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 m\u00e0 kh\u00f4ng ki\u1ec3m tra tr\u01b0\u1edbc<\/p><\/li><li><p>L\u1eadp k\u1ebf ho\u1ea1ch cho kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai (25G \u2192 li\u00ean k\u1ebft l\u00ean 100G)<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00e1c ch\u00ednh s\u00e1ch m\u00e3 h\u00f3a nh\u1ea5t qu\u00e1n trong c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 cung c\u1ea5p l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p linh ho\u1ea1t l\u00ean Ethernet 25G, nh\u01b0ng t\u00ednh t\u01b0\u01a1ng th\u00edch th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o kh\u1ea3 n\u0103ng c\u1ee7a switch, ch\u00ednh s\u00e1ch nh\u00e0 cung c\u1ea5p v\u00e0 thi\u1ebft l\u1eadp c\u1ea5u h\u00ecnh. \u0110\u1ec3 tri\u1ec3n khai \u1ed5n \u0111\u1ecbnh, lu\u00f4n \u0111\u1ed3ng b\u1ed9 h\u00f3a h\u1ed7 tr\u1ee3 ph\u1ea7n c\u1ee9ng + lo\u1ea1i quang h\u1ecdc + quy t\u1eafc nh\u00e0 cung c\u1ea5p tr\u01b0\u1edbc khi m\u1edf r\u1ed9ng m\u1ea1ng 25G.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>Khi n\u00e0o b\u1ea1n n\u00ean ch\u1ecdn SFP28? (H\u01b0\u1edbng d\u1eabn t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 ph\u00f9 h\u1ee3p nh\u1ea5t trong c\u00e1c m\u1ea1ng 25GbE n\u01a1i y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 m\u1eadt \u0111\u1ed9 c\u1ed5ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng\u2014\u0111\u1eb7c bi\u1ec7t trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 c\u1ee5m \u0111i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao.<\/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\/298bf0d7d36f42a08c68ba58fca8d403.jpg\" alt=\"When Should You Choose SFP28?\" class=\"wp-image-2908\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/298bf0d7d36f42a08c68ba58fca8d403.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/298bf0d7d36f42a08c68ba58fca8d403-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/298bf0d7d36f42a08c68ba58fca8d403-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/298bf0d7d36f42a08c68ba58fca8d403-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/298bf0d7d36f42a08c68ba58fca8d403-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 Trung t\u00e2m d\u1eef li\u1ec7u (Ki\u1ebfn tr\u00fac spine\u2013leaf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c b\u1ed1 tr\u00ed spine-leaf, n\u01a1i l\u01b0u l\u01b0\u1ee3ng gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 switch \u0111\u00f2i h\u1ecfi th\u00f4ng l\u01b0\u1ee3ng cao v\u00e0 t\u1ef7 l\u1ec7 qu\u00e1 t\u1ea3i th\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ec sao SFP28 ph\u00f9 h\u1ee3p v\u1edbi trung t\u00e2m d\u1eef li\u1ec7u:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p<strong> K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7\u2013switch 25G<\/strong><\/p><\/li><li><p>Gi\u1ea3m t\u1eafc ngh\u1ebdn so v\u1edbi m\u1ea1ng 10G (SFP+)<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 c\u00e1c c\u1ed5ng chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng kh\u00f4ng gian gi\u00e1 \u0111\u1ee1<\/p><\/li><li><p>C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t l\u01b0u l\u01b0\u1ee3ng east-west<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 T\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh:<br\/>B\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ea7u t\u1ee7 (ToR) k\u1ebft n\u1ed1i nhi\u1ec1u m\u00e1y ch\u1ee7 b\u1eb1ng c\u00e1c li\u00ean k\u1ebft SFP28 25G<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y (M\u00f4i tr\u01b0\u1eddng quy m\u00f4 l\u1edbn)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y d\u1ef1a v\u00e0o SFP28 \u0111\u1ec3 m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong khi ki\u1ec3m so\u00e1t chi ph\u00ed v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c l\u1ee3i th\u1ebf ch\u00ednh trong m\u1ea1ng \u0111\u00e1m m\u00e2y:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u00f4ng l\u01b0\u1ee3ng cao h\u01a1n tr\u00ean m\u1ed7i c\u1ed5ng so v\u1edbi 10G<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i bit so v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng 10G truy\u1ec1n th\u1ed1ng<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t h\u01a1n cho c\u00e1c kh\u1ed1i c\u00f4ng vi\u1ec7c \u1ea3o h\u00f3a<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 lu\u1ed3ng l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 (east-west) quy m\u00f4 l\u1edbn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 T\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh:<br\/>C\u00e1c c\u1ee5m m\u00e1y \u1ea3o v\u00e0 n\u00fat l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i th\u00f4ng qua c\u00e1c li\u00ean k\u1ebft SFP28 25G<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 \u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao (HPC)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\">HPC<\/a> Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng n\u00e0y, hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tr\u1ec5 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. SFP28 mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed cho c\u00e1c kh\u1ed1i c\u00f4ng vi\u1ec7c \u0111\u00f2i h\u1ecfi t\u00ednh to\u00e1n n\u1eb7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do HPC s\u1eed d\u1ee5ng SFP28:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c li\u00ean k\u1ebft n\u1ed9i b\u1ed9 25G c\u00f3 \u0111\u1ed9 tr\u1ec5 th\u1ea5p<\/p><\/li><li><p>B\u0103ng th\u00f4ng cao cho c\u00e1c t\u00e1c v\u1ee5 \u0111i\u1ec7n to\u00e1n ph\u00e2n t\u00e1n<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng hi\u1ec7u qu\u1ea3 tr\u00ean c\u00e1c n\u00fat t\u00ednh to\u00e1n<\/p><\/li><li><p>Ph\u00f9 h\u1ee3p cho c\u00e1c c\u1ee5m hu\u1ea5n luy\u1ec7n AI\/ML<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 T\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh:<br\/><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-modules-in-gpu-clusters\/\">c\u1ee5m GPU<\/a> ho\u1eb7c c\u00e1c n\u00fat \u0111i\u1ec7n to\u00e1n ph\u00e2n t\u00e1n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi SFP28 25G<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2605 L\u00fd lu\u1eadn ra quy\u1ebft \u0111\u1ecbnh v\u1ec1 chi ph\u00ed so v\u1edbi hi\u1ec7u n\u0103ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn SFP28 th\u01b0\u1eddng l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng chi\u1ebfn l\u01b0\u1ee3c gi\u1eefa chi ph\u00ed, hi\u1ec7u n\u0103ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ecdn SFP28 khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n \u0111ang x\u00e2y d\u1ef1ng ho\u1eb7c n\u00e2ng c\u1ea5p l\u00ean ki\u1ebfn tr\u00fac m\u1ea1ng 25G<\/p><\/li><li><p>10G (SFP+) \u0111ang tr\u1edf th\u00e0nh \u0111i\u1ec3m ngh\u1ebdn hi\u1ec7u n\u0103ng<\/p><\/li><li><p>B\u1ea1n c\u1ea7n m\u1eadt \u0111\u1ed9 cao h\u01a1n m\u00e0 kh\u00f4ng t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng<\/p><\/li><li><p>B\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai l\u00ean c\u00e1c li\u00ean k\u1ebft l\u00ean (uplink) 100G (th\u00f4ng qua <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488454.htm\">4\u00d725G<\/a> t\u1ed5ng h\u1ee3p)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e2n nh\u1eafc c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ng\u00e2n s\u00e1ch b\u1ecb gi\u1edbi h\u1ea1n nghi\u00eam ng\u1eb7t v\u00e0 10G l\u00e0 \u0111\u1ee7<\/p><\/li><li><p>L\u01b0u l\u01b0\u1ee3ng m\u1ea1ng th\u1ea5p ho\u1eb7c kh\u00f4ng quan tr\u1ecdng<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n t\u1ea1i ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean 10G v\u00e0 \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP28 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 b\u1ea3n n\u00e2ng c\u1ea5p t\u1eeb SFP+\u2014m\u00e0 l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 chuy\u1ec3n \u0111\u1ed5i chi\u1ebfn l\u01b0\u1ee3c cho c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. N\u00f3 mang l\u1ea1i gi\u00e1 tr\u1ecb t\u1ed1t nh\u1ea5t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u00e0 nhu c\u1ea7u v\u1ec1 b\u0103ng th\u00f4ng, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng d\u00e0i h\u1ea1n l\u00e0 nh\u1eefng \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>Nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a SFP28<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP28 mang l\u1ea1i m\u1ed9t n\u00e2ng c\u1ea5p hi\u1ec7u n\u0103ng \u0111\u00e1ng k\u1ec3 cho m\u1ea1ng hi\u1ec7n \u0111\u1ea1i b\u1eb1ng c\u00e1ch h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i 25GbE trong c\u00f9ng k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn nh\u01b0 SFP+. Tuy nhi\u00ean, gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 c\u00f4ng ngh\u1ec7 n\u00e0o kh\u00e1c, n\u00f3 v\u1eeba c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m r\u00f5 r\u00e0ng v\u1eeba c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf th\u1ef1c t\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng trong qu\u00e1 tr\u00ecnh 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\/f5c6734a6fca4aea8969013401d1eb38.jpg\" alt=\"SFP28 Advantages\" class=\"wp-image-2909\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5c6734a6fca4aea8969013401d1eb38.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5c6734a6fca4aea8969013401d1eb38-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5c6734a6fca4aea8969013401d1eb38-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5c6734a6fca4aea8969013401d1eb38-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5c6734a6fca4aea8969013401d1eb38-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a SFP28<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >M\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t h\u01a1n<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 cho ph\u00e9p c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf m\u1ea1ng \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 25 Gbps tr\u00ean m\u1ed7i c\u1ed5ng m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd, nh\u1edd \u0111\u00f3 r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f9ng k\u00edch th\u01b0\u1edbc h\u00ecnh h\u1ecdc v\u1edbi SFP+<\/p><\/li><li><p>B\u0103ng th\u00f4ng cao h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb rack<\/p><\/li><li><p>M\u1edf r\u1ed9ng ki\u1ebfn tr\u00fac spine-leaf hi\u1ec7u qu\u1ea3<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c t\u1eadp h\u1ee3p trong t\u01b0\u01a1ng lai (v\u00ed d\u1ee5: 4\u00d725G \u2192 100G)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 K\u1ebft qu\u1ea3: Hi\u1ec7u n\u0103ng cao h\u01a1n trong c\u00f9ng kh\u00f4ng gian v\u1eadt l\u00fd<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i bit<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">So v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac 10G c\u0169 h\u01a1n, SFP28 cung c\u1ea5p hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 tr\u00ean m\u1ed7i gigabit \u0111\u01b0\u1ee3c truy\u1ec1n.<\/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 Gbps so v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u0169 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476089.htm\">H\u1ec7 th\u1ed1ng 10G<\/a><\/p><\/li><li><p>Gi\u1ea3m ph\u00e1t nhi\u1ec7t trong c\u00e1c tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>L\u00e0m m\u00e1t v\u00e0 chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7u qu\u1ea3 h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 K\u1ebft qu\u1ea3: Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng t\u1ed1t h\u01a1n trong 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>\n\n\n\n<h4 class=\"wp-block-heading\" >Hi\u1ec7u qu\u1ea3 chi ph\u00ed cao khi tri\u1ec3n khai quy m\u00f4 l\u1edbn<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 t\u1eebng module SFP28 c\u00e1 bi\u1ec7t c\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n SFP+, chi ph\u00ed tr\u00ean m\u1ed7i bit \u0111\u01b0\u1ee3c truy\u1ec1n l\u1ea1i th\u1ea5p h\u01a1n, do \u0111\u00f3 mang t\u00ednh h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t kinh t\u1ebf \u0111\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m nhu c\u1ea7u s\u1eed d\u1ee5ng nhi\u1ec1u li\u00ean k\u1ebft 10G<\/p><\/li><li><p>\u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y quy m\u00f4 l\u1edbn<\/p><\/li><li><p>Chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng d\u00e0i h\u1ea1n th\u1ea5p h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 K\u1ebft qu\u1ea3: T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO) t\u1ed1t h\u01a1n cho c\u00e1c m\u1ea1ng 25G<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >C\u00e1c t\u00f9y ch\u1ecdn tri\u1ec3n khai linh ho\u1ea1t<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>DAC (\u0110\u1ed3ng n\u1ed1i tr\u1ef1c ti\u1ebfp)<\/p><\/li><li><p>AOC (C\u00e1p quang ch\u1ee7 \u0111\u1ed9ng)<\/p><\/li><li><p>B\u1ed9 thu ph\u00e1t quang (SR\/LR)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 K\u1ebft qu\u1ea3: <strong>Ki\u1ebfn tr\u00fac linh ho\u1ea1t \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch kh\u00e1c nhau<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c h\u1ea1n ch\u1ebf ch\u00ednh c\u1ee7a SFP28<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >H\u1ea1n ch\u1ebf v\u1ec1 kho\u1ea3ng c\u00e1ch (so v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n t\u1ed1c \u0111\u1ed9 cao h\u01a1n)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 SFP28 h\u1ed7 tr\u1ee3 l\u00ean \u0111\u1ebfn 10 km v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477935.htm\">Quang h\u1ecdc LR<\/a>, ph\u1ea7n l\u1edbn c\u00e1c tri\u1ec3n khai ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u1ea5t l\u00e0 \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>DAC: l\u00ean \u0111\u1ebfn ~5 m\u00e9t<\/p><\/li><li><p>AOC: l\u00ean \u0111\u1ebfn ~100 m\u00e9t<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473145.htm\">quang h\u1ecdc SR<\/a>: t\u1ed1i \u0111a ~100 m\u00e9t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 H\u1ea1n ch\u1ebf: Kh\u00f4ng ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng \u0111\u01b0\u1eddng d\u00e0i n\u1ebfu kh\u00f4ng c\u00f3 th\u00eam c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quang h\u1ecdc<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 compatibility is not universally guaranteed across all devices.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ed1 c\u00f4ng t\u1eafc y\u00eau c\u1ea7u c\u00e1c module quang do nh\u00e0 cung c\u1ea5p m\u00e3 h\u00f3a<\/p><\/li><li><p>Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng SFP+ \u0111\u1ec1u h\u1ed7 tr\u1ee3 c\u00e1c module SFP28<\/p><\/li><li><p>H\u00e0nh vi \u0111a t\u1ed1c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c v\u00e0o ph\u1ea7n c\u1ee9ng v\u00e0 firmware<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 H\u1ea1n ch\u1ebf: Y\u00eau c\u1ea7u x\u00e1c th\u1ef1c c\u1ea9n th\u1eadn trong c\u00e1c m\u00f4i tr\u01b0\u1eddng h\u1ed7n h\u1ee3p<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\u0110\u1ed9 ph\u1ee9c t\u1ea1p khi n\u00e2ng c\u1ea5p t\u1eeb m\u1ea1ng 10G k\u1ebf th\u1eeba<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c n\u00e2ng c\u1ea5p t\u1eeb SFP+ (10G) l\u00ean SFP28 (25G) c\u00f3 th\u1ec3 y\u00eau c\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thay th\u1ebf ho\u1eb7c n\u00e2ng c\u1ea5p c\u00f4ng t\u1eafc<\/p><\/li><li><p>\u0110i\u1ec1u ch\u1ec9nh c\u00e1p (lo\u1ea1i s\u1ee3i quang, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1p DAC)<\/p><\/li><li><p>Thi\u1ebft k\u1ebf l\u1ea1i m\u1ea1ng trong m\u1ed9t s\u1ed1 ki\u1ebfn tr\u00fac<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 H\u1ea1n ch\u1ebf: Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 n\u00e2ng c\u1ea5p \u201cc\u1eafm v\u00e0o l\u00e0 ch\u1ea1y\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1i nh\u00ecn c\u00e2n b\u1eb1ng: Khi n\u00e0o SFP28 ph\u00e1t huy hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 ph\u00e1t huy hi\u1ec7u qu\u1ea3 nh\u1ea5t khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1edf r\u1ed9ng h\u1ea1 t\u1ea7ng t\u1eeb 10G l\u00ean 25G<\/p><\/li><li><p>X\u00e2y d\u1ef1ng c\u00e1c ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi<\/p><\/li><li><p>T\u1ed1i \u01b0u h\u00f3a v\u1ec1 m\u1eadt \u0111\u1ed9 b\u0103ng th\u00f4ng v\u00e0 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 \u00edt ph\u00f9 h\u1ee3p h\u01a1n khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ea7y \u0111\u1ee7 \u1edf m\u1ee9c 10G<\/p><\/li><li><p>Truy\u1ec1n d\u1eabn quang kho\u1ea3ng c\u00e1ch xa l\u00e0 y\u00eau c\u1ea7u ch\u00ednh<\/p><\/li><li><p>C\u00e1c h\u1ea1n ch\u1ebf c\u1ee7a nh\u00e0 cung c\u1ea5p l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u00ednh linh ho\u1ea1t c\u1ee7a module<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP28 mang \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p m\u1ea1nh m\u1ebd gi\u1eefa b\u0103ng th\u00f4ng cao, hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i c\u1ee7a m\u1ea1ng 25G hi\u1ec7n \u0111\u1ea1i. Tuy nhi\u00ean, l\u1ee3i \u00edch c\u1ee7a n\u00f3 ch\u1ec9 \u0111\u01b0\u1ee3c ph\u00e1t huy t\u1ed1i \u0111a khi t\u00ednh t\u01b0\u01a1ng th\u00edch, y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch v\u00e0 k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ti\u00eau chu\u1ea9n SFP28 <\/strong><\/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\/3b98b543fc6445be89259169216b8a0b.jpg\" alt=\"FAQ about SFP28 Standard\" class=\"wp-image-2910\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b98b543fc6445be89259169216b8a0b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b98b543fc6445be89259169216b8a0b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b98b543fc6445be89259169216b8a0b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b98b543fc6445be89259169216b8a0b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b98b543fc6445be89259169216b8a0b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 1: T\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 chu\u1ea9n SFP28 h\u1ed7 tr\u1ee3 l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Chu\u1ea9n SFP28 h\u1ed7 tr\u1ee3 l\u00ean \u0111\u1ebfn Ethernet 25 Gigabit (25GbE)<\/strong> tr\u00ean m\u1ed7i k\u00eanh. Chu\u1ea9n n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p b\u0103ng th\u00f4ng cao h\u01a1n so v\u1edbi SFP+, \u0111\u1ed3ng th\u1eddi v\u1eabn duy tr\u00ec c\u00f9ng k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, nh\u1edd \u0111\u00f3 ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 2: SFP28 ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong trung t\u00e2m d\u1eef li\u1ec7u hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. M\u1eb7c d\u00f9 SFP28 ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, nh\u01b0ng n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng l\u00f5i doanh nghi\u1ec7p, c\u00e1c c\u1ee5m t\u00ednh to\u00e1n hi\u1ec7u n\u0103ng cao (HPC) v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u01a1i y\u00eau c\u1ea7u k\u1ebft n\u1ed1i 25G c\u00f3 \u0111\u1ed9 tr\u1ec5 th\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 3: SFP28 c\u00f3 th\u1ec3 thay th\u1ebf nhi\u1ec1u k\u1ebft n\u1ed1i SFP+ 10G hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, m\u1ed9t k\u1ebft n\u1ed1i SFP28 25G \u0111\u01a1n l\u1ebb c\u00f3 th\u1ec3 thay th\u1ebf nhi\u1ec1u k\u1ebft n\u1ed1i SFP+ 10G, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 b\u0103ng th\u00f4ng v\u00e0 gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1p. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c ki\u1ebfn tr\u00fac m\u1ea1ng spine-leaf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 4: SFP28 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a n\u00e0o \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c 25GbE?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 th\u01b0\u1eddng s\u1eed d\u1ee5ng <strong>m\u00e3 h\u00f3a 64b\/66b<\/strong>, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy\u1ec1n d\u1eabn b\u1eb1ng c\u00e1ch gi\u1ea3m m\u1ee9c ti\u00eau hao so v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a c\u0169 h\u01a1n. Nh\u1edd \u0111\u00f3, chu\u1ea9n n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng l\u01b0\u1ee3ng s\u1eed d\u1ee5ng g\u1ea7n 25 Gbps tr\u00ean t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u kho\u1ea3ng 28 Gbps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 5: M\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t \u0111i\u1ec3n h\u00ecnh c\u1ee7a c\u00e1c module SFP28 l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft <strong>C\u00e1c b\u1ed9 thu ph\u00e1t quang SFP28 ti\u00eau th\u1ee5 kho\u1ea3ng 1W \u0111\u1ebfn 2,5W<\/strong>, t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i (SR, LR, DAC ho\u1eb7c AOC). V\u1ec1 m\u1eb7t \u0111o l\u01b0\u1eddng theo gigabit, m\u1ee9c ti\u00eau th\u1ee5 n\u00e0y th\u01b0\u1eddng hi\u1ec7u qu\u1ea3 h\u01a1n so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p k\u1ebf th\u1eeba c\u0169 h\u01a1n s\u1eed d\u1ee5ng nhi\u1ec1u k\u00eanh ho\u1eb7c c\u00f4ng su\u1ea5t cao h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 6: SFP28 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a chu\u1ea9n Ethernet hay ch\u1ec9 l\u00e0 m\u1ed9t d\u1ea1ng h\u00ecnh th\u1ee9c ph\u1ea7n c\u1ee9ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SFP28 l\u00e0 m\u1ed9t d\u1ea1ng h\u00ecnh th\u1ee9c ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi SFP MSA (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/multi-source-agreements-optical-transceivers\/\">Th\u1ecfa thu\u1eadn \u0110a ngu\u1ed3n<\/a>). N\u00f3 h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c Ethernet nh\u01b0 <strong>25GbE<\/strong>, nh\u01b0ng b\u1ea3n th\u00e2n n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t chu\u1ea9n Ethernet \u2014 thay v\u00e0o \u0111\u00f3, n\u00f3 l\u00e0 giao di\u1ec7n v\u1eadt l\u00fd d\u00f9ng \u0111\u1ec3 tri\u1ec3n khai chu\u1ea9n \u0111\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 7: SFP28 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c n\u00e2ng c\u1ea5p m\u1ea1ng 100G trong t\u01b0\u01a1ng lai hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, gi\u00e1n ti\u1ebfp. M\u1eb7c d\u00f9 SFP28 b\u1ea3n th\u00e2n l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p 25G, nh\u01b0ng n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong <strong>c\u00e1c c\u1ea5u h\u00ecnh chia t\u00e1ch (breakout) (4\u00d725G \u2192 100G)<\/strong>, do \u0111\u00f3 tr\u1edf th\u00e0nh m\u1ed9t kh\u1ed1i x\u00e2y d\u1ef1ng quan tr\u1ecdng trong c\u00e1c ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u 100G c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf1f <strong>T\u00f3m t\u1eaft cu\u1ed1i c\u00f9ng v\u1ec1 chu\u1ea9n SFP28<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Chu\u1ea9n SFP28 l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 then ch\u1ed1t cho c\u00e1c m\u1ea1ng Ethernet 25 Gigabit (25GbE), mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa b\u0103ng th\u00f4ng cao, thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng. L\u00e0 phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p c\u1ee7a SFP+, chu\u1ea9n n\u00e0y gi\u1eef nguy\u00ean k\u00edch th\u01b0\u1edbc h\u00ecnh th\u1ee9c nh\u01b0ng t\u0103ng \u0111\u00e1ng k\u1ec3 hi\u1ec7u n\u0103ng, nh\u1edd \u0111\u00f3 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 trong ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, SFP28 h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u00f9y ch\u1ecdn tri\u1ec3n khai bao g\u1ed3m DAC (\u0111\u1ed3ng), AOC (c\u00e1p quang ch\u1ee7 \u0111\u1ed9ng) v\u00e0 c\u00e1c b\u1ed9 thu ph\u00e1t quang (SR\/LR), cho ph\u00e9p th\u00edch \u1ee9ng v\u1edbi c\u00e1c y\u00eau c\u1ea7u kh\u00e1c nhau v\u1ec1 kho\u1ea3ng c\u00e1ch v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng. S\u1ef1 linh ho\u1ea1t n\u00e0y l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do ch\u00ednh khi\u1ebfn SFP28 tr\u1edf th\u00e0nh th\u00e0nh ph\u1ea7n n\u1ec1n t\u1ea3ng trong c\u00e1c thi\u1ebft k\u1ebf trung t\u00e2m d\u1eef li\u1ec7u spine-leaf, n\u1ec1n t\u1ea3ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 m\u00f4i tr\u01b0\u1eddng HPC.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP28 cung c\u1ea5p <strong>25 Gbps tr\u00ean m\u1ed7i k\u00eanh<\/strong> nh\u1eb1m \u0111\u00e1p \u1ee9ng hi\u1ec7u n\u0103ng Ethernet th\u1ebf h\u1ec7 ti\u1ebfp theo<\/p><\/li><li><p>N\u00f3 chia s\u1ebb c\u00f9ng k\u00edch th\u01b0\u1edbc h\u00ecnh th\u1ee9c v\u1edbi SFP+, cho ph\u00e9p tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>N\u00f3 h\u1ed7 tr\u1ee3 c\u1ea3 hai t\u00f9y ch\u1ecdn k\u1ebft n\u1ed1i <strong>s\u1ee3i quang v\u00e0 \u0111\u1ed3ng<\/strong><\/p><\/li><li><p>N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong <strong>trung t\u00e2m d\u1eef li\u1ec7u, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 m\u1ea1ng doanh nghi\u1ec7p<\/strong><\/p><\/li><li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o <strong>ph\u1ea7n c\u1ee9ng b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 c\u00e1ch tri\u1ec3n khai c\u1ee7a nh\u00e0 cung c\u1ea5p<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 g\u00f3c \u0111\u1ed9 l\u1eadp k\u1ebf ho\u1ea1ch c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng, SFP28 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t n\u00e2ng c\u1ea5p t\u1ed1c \u0111\u1ed9 \u2014 m\u00e0 c\u00f2n l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c m\u1edf r\u1ed9ng quy m\u00f4. C\u00e1c t\u1ed5 ch\u1ee9c \u00e1p d\u1ee5ng 25G d\u1ef1a tr\u00ean SFP28 s\u1ebd \u1edf v\u1ecb th\u1ebf t\u1ed1t h\u01a1n \u0111\u1ec3 ti\u1ebfn t\u1edbi c\u00e1c chuy\u1ec3n \u0111\u1ed5i 100G v\u00e0 400G trong t\u01b0\u01a1ng lai, \u0111\u1eb7c bi\u1ec7t khi s\u1eed d\u1ee5ng c\u00e1c ki\u1ebfn tr\u00fac chia t\u00e1ch (breakout) v\u00e0 t\u1eadp h\u1ee3p (aggregation).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai th\u00e0nh c\u00f4ng \u0111\u00f2i h\u1ecfi ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u00ednh s\u00e1ch t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>Vi\u1ec7c l\u1ef1a ch\u1ecdn module quang (SR so v\u1edbi LR so v\u1edbi DAC so v\u1edbi AOC)<\/p><\/li><li><p>K\u1ebf ho\u1ea1ch di chuy\u1ec3n t\u1eeb c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng 10G k\u1ebf th\u1eeba<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o c\u1ea3 s\u1ef1 \u1ed5n \u0111\u1ecbnh hi\u1ec7u n\u0103ng l\u1eabn hi\u1ec7u qu\u1ea3 chi ph\u00ed d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4.jpg\" alt=\"Choosing the Right SFP28 Solution\" class=\"wp-image-2911\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ceab1bb7c0da4684ad3ec569ef651eb4-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p SFP28 ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p ho\u1eb7c tri\u1ec3n khai m\u1ea1ng 25G, h\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c \u0111\u00e1nh gi\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn y\u00eau c\u1ea7u<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch hi\u1ec7n c\u00f3<\/p><\/li><li><p>Y\u00eau c\u1ea7u v\u1ec1 c\u00f4ng su\u1ea5t v\u00e0 m\u1eadt \u0111\u1ed9<\/p><\/li><li><p>B\u1ea3n \u0111\u1ed3 l\u1ed9 tr\u00ecnh m\u1edf r\u1ed9ng quy m\u00f4 trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i module SFP28 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u1ea3 hi\u1ec7u n\u0103ng l\u1eabn t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1m ph\u00e1 c\u00e1c gi\u1ea3i ph\u00e1p m\u1ea1ng hi\u1ec7u n\u0103ng cao, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 v\u00e0 t\u01b0\u01a1ng th\u00edch t\u1ea1i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49<br> <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\">N\u00e2ng c\u1ea5p m\u1ea1ng c\u1ee7a b\u1ea1n v\u1edbi c\u00e1c b\u1ed9 thu ph\u00e1t SFP28, c\u00e1p DAC v\u00e0 AOC \u0111\u00e1ng tin c\u1eady, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho hi\u1ec7u n\u0103ng trung t\u00e2m d\u1eef li\u1ec7u 25G hi\u1ec7n \u0111\u1ea1i.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u chu\u1ea9n SFP28, bao g\u1ed3m kh\u1ea3 n\u0103ng 25G, s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa SFP28 v\u00e0 SFP+, c\u00e1c l\u1ef1a ch\u1ecdn s\u1ee3i quang v\u00e0 \u0111\u1ed3ng, v\u00e0 c\u00e1ch ch\u1ecdn gi\u1ea3i ph\u00e1p 25G ph\u00f9 h\u1ee3p.<\/p>","protected":false},"author":1,"featured_media":2912,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[16],"class_list":["post-2913","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-link-pp-25g-sfp28-optical-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2913","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=2913"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2913\/revisions"}],"predecessor-version":[{"id":10734,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2913\/revisions\/10734"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2912"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}