{"id":4541,"date":"2025-10-31T11:12:00","date_gmt":"2025-10-31T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/how-25gbase-sr-works-in-modern-data-centers\/"},"modified":"2026-06-22T05:43:04","modified_gmt":"2026-06-22T05:43:04","slug":"how-25gbase-sr-works-in-modern-data-centers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-25gbase-sr-works-in-modern-data-centers","title":{"rendered":"C\u00e1ch 25GBASE-SR Ho\u1ea1t \u0111\u1ed9ng trong C\u00e1c Trung t\u00e2m D\u1eef li\u1ec7u Hi\u1ec7n \u0111\u1ea1i"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"852\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9.webp\" alt=\"25GBASE-SR SFP28 Module in Data Centers\" class=\"wp-image-4538\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9-300x213.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9-1024x727.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9-768x545.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c14847fbc9c644ac937d61918081b3c9-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f Gi\u1edbi thi\u1ec7u: V\u00ec sao 25GBASE-SR quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476099.htm\"><strong>M\u00f4-\u0111un quang 25GBASE-SR<\/strong><\/a> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t kh\u1ed1i x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng cho k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7\u2013c\u00f4ng t\u1eafc trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn hi\u1ec7n \u0111\u1ea1i v\u00e0 doanh nghi\u1ec7p <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\"><strong>trung t\u00e2m d\u1eef li\u1ec7u<br><\/strong><\/a>. \u0110\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean d\u1ea1ng h\u00ecnh SFP28 v\u00e0 t\u1ed1i \u01b0u h\u00f3a cho <strong>s\u1ee3i quang \u0111a mode kho\u1ea3ng c\u00e1ch ng\u1eafn (MMF)<\/strong>, nh\u1eefng m\u00f4-\u0111un n\u00e0y cung c\u1ea5p t\u1ed1c \u0111\u1ed9 25 Gbps tr\u00ean m\u1ed7i k\u00eanh\u2014gi\u00fap ch\u00fang tr\u1edf th\u00e0nh ng\u01b0\u1eddi k\u1ebf nhi\u1ec7m t\u1ef1 nhi\u00ean c\u1ee7a c\u00e1c li\u00ean k\u1ebft 10G v\u00e0 m\u1ed9t b\u01b0\u1edbc \u0111i then ch\u1ed1t h\u01b0\u1edbng t\u1edbi c\u00e1c c\u1ea5u tr\u00fac m\u1ea1ng 100G v\u00e0 400G c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u00f4i tr\u01b0\u1eddng m\u1eadt \u0111\u1ed9 cao, 25GBASE-SR \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng tuy\u1ec7t v\u1eddi gi\u1eefa <strong>b\u0103ng th\u00f4ng, hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng, t\u00ednh \u0111\u01a1n gi\u1ea3n khi n\u00e2ng c\u1ea5p v\u00e0 chi ph\u00ed<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f Ti\u00eau chu\u1ea9n &amp; D\u1ea1ng h\u00ecnh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">25GBASE-SR tu\u00e2n theo ki\u1ebfn tr\u00fac IEEE 802.3 cho Ethernet 25 Gbps v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p \u1edf d\u1ea1ng h\u00ecnh <strong>SFP28<\/strong> C\u00e1c m\u00f4-\u0111un SFP28 duy tr\u00ec kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u01a1 h\u1ecdc ng\u01b0\u1ee3c v\u1edbi c\u00e1c c\u1ed5ng SFP+, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p t\u00edn hi\u1ec7u \u0111i\u1ec7n c\u1ea3i ti\u1ebfn \u0111\u1ec3 h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 25 Gbps.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00eau c\u1ea7u c\u1eb7p m\u00f4-\u0111un c\u00f3 b\u01b0\u1edbc s\u00f3ng b\u1ed5 sung<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed1c \u0111\u1ed9:<\/strong> 25 Gbps tr\u00ean m\u1ed7i k\u00eanh<\/p><\/li><li><p><strong>\u0110\u1ea7u n\u1ed1i:<\/strong> LC hai chi\u1ec1u<\/p><\/li><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<br><\/p><\/li><li><p><strong>Lo\u1ea1i laser:<\/strong> Laser VCSEL.<\/p><\/li><li><p><strong>Giao di\u1ec7n:<\/strong> Giao di\u1ec7n \u0111i\u1ec7n ch\u1ee7 SFP28<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f C\u00f4ng ngh\u1ec7 quang h\u1ecdc: B\u01b0\u1edbc s\u00f3ng 850 nm &amp; Thi\u1ebft k\u1ebf VCSEL<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un 25GBASE-SR truy\u1ec1n t\u00edn hi\u1ec7u g\u1ea7n <strong>850 nm<\/strong> s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/overview-of-vcsel\/\"><strong>VCSEL (Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t khoang d\u1ecdc)<\/strong><\/a> VCSEL mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m cho c\u00e1c c\u1ea5u tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch ng\u1eafn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>D\u1ea3i t\u1ea7n s\u1ed1 \u0111i\u1ec1u ch\u1ebf cao \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u 25 Gbps<\/p><\/li><li><p>Hi\u1ec7u su\u1ea5t gh\u00e9p n\u1ed1i t\u1ed1t v\u1edbi s\u1ee3i MMF<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n th\u1ea5p h\u01a1n nhi\u1ec1u gi\u1ea3i ph\u00e1p s\u1ee3i \u0111\u01a1n mode<\/p><\/li><li><p>Chi ph\u00ed th\u1ea5p v\u00e0 t\u1ef7 l\u1ec7 s\u1ea3n xu\u1ea5t cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00eda thu th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111i-\u1ed1t quang PIN \u0111\u1ec3 ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u nh\u1ea1y cao \u1edf t\u1ed1c \u0111\u1ed9 25 Gbps.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f Kho\u1ea3ng c\u00e1ch truy\u1ec1n &amp; C\u00e1c lo\u1ea1i s\u1ee3i quang (OM3 \/ OM4 \/ OM5)<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 135px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi truy\u1ec1n \u0111i\u1ec3n h\u00ecnh \u1edf t\u1ed1c \u0111\u1ed9 25G<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ghi ch\u00fa<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p><p>Up to 550 m (1,800 ft)<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~70 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hi\u1ec7u qu\u1ea3 chi ph\u00ed cho c\u00e1c \u0111o\u1ea1n c\u00e1p ng\u1eafn<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>OM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~100 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn cho c\u00e1c l\u1eafp \u0111\u1eb7t m\u1edbi<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"135\"><p>OM5<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn ~150 m trong m\u1ed9t s\u1ed1 tri\u1ec3n khai nh\u1ea5t \u0111\u1ecbnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i MMF d\u1ea3i t\u1ea7n r\u1ed9ng n\u00e2ng cao<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Kho\u1ea3ng c\u00e1ch ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng s\u1ee3i, t\u1ed5n hao \u0111\u1ea7u n\u1ed1i v\u00e0 vi\u1ec7c<strong> <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fec-forward-error-correction-in-optical-communication\/\"><strong>s\u1eeda l\u1ed7i ti\u1ebfn (FEC)<\/strong><\/a> c\u00f3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t tr\u00ean thi\u1ebft b\u1ecb ch\u1ee7 hay kh\u00f4ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f Vai tr\u00f2 trong ki\u1ebfn tr\u00fac trung t\u00e2m d\u1eef li\u1ec7u<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >K\u1ebft n\u1ed1i Top-of-Rack (ToR) &amp; c\u1ea5u tr\u00fac m\u1ea1ng Leaf-Spine<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>25GBASE-LR<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c k\u1ebft n\u1ed1i ToR t\u1eeb <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">c\u00e1c NIC d\u00e0nh cho m\u00e1y ch\u1ee7<\/a> \u0111\u1ebfn c\u00e1c c\u00f4ng t\u1eafc leaf. N\u00f3 cung c\u1ea5p b\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft cho c\u00e1c n\u00fat x\u1eed l\u00fd gi\u00e0u CPU v\u00e0 GPU m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u00e1c th\u1ef1c ti\u1ec5n c\u00e1p v\u1eadt l\u00fd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u01b0\u1eddng d\u1eabn n\u00e2ng c\u1ea5p: 10G \u2192 25G \u2192 100G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai 25G tu\u00e2n theo m\u1ed9t l\u1ed9 tr\u00ecnh ph\u00e1t tri\u1ec3n t\u1ef1 nhi\u00ean:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 133px;\"\/><col style=\"width: 231px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"133\"><p>Giai \u0111o\u1ea1n<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>C\u1ea5u tr\u00fac k\u00eanh \u0111i\u1ec3n h\u00ecnh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>L\u1ee3i \u00edch<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"133\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>1\u00d710G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tri\u1ec3n khai c\u0169<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"133\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">25G<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>1\u00d725G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e1y ch\u1ee7 hi\u1ec7n \u0111\u1ea1i &amp; c\u00f4ng t\u1eafc leaf<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"133\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">100G<br><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>4\u00d725G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1eed d\u1ee5ng c\u00f9ng c\u00e1c \u0111\u01b0\u1eddng d\u1eabn 25G cho c\u00e1c k\u1ebft n\u1ed1i uplink<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c c\u0103n ch\u1ec9nh n\u00e0y \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng quang v\u00e0 \u0111\u1ea3m b\u1ea3o chi\u1ebfn l\u01b0\u1ee3c n\u00e2ng c\u1ea5p tr\u01a1n tru.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t v\u1ec1 hi\u1ec7u n\u0103ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >FEC &amp; \u0110\u1ed9 tin c\u1eady c\u1ee7a li\u00ean k\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 giao ti\u1ebfp m\u1ea1ng (NIC) d\u1ef1a v\u00e0o <strong>RS-FEC<\/strong> \u0111\u1ec3 m\u1edf r\u1ed9ng kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 duy tr\u00ec m\u1ee9c \u0111\u1ed9 th\u1ea5p c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>BER (t\u1ef7 l\u1ec7 l\u1ed7i bit)<\/strong><\/a>. H\u00e3y x\u00e1c nh\u1eadn xem n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea1n c\u00f3 y\u00eau c\u1ea7u FEC \u0111\u1ec3 \u0111\u1ea1t kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a hay kh\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Thi\u1ebft k\u1ebf v\u1ec1 \u0111i\u1ec7n n\u0103ng &amp; nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quang h\u1ecdc SFP28<\/strong> ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, nh\u01b0ng c\u00e1c c\u1ed5ng chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao v\u1eabn \u0111\u00f2i h\u1ecfi quy ho\u1ea1ch lu\u1ed3ng kh\u00ed l\u00e0m m\u00e1t ph\u00f9 h\u1ee3p. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh n\u00ean ki\u1ec3m tra x\u1ebfp h\u1ea1ng c\u00f4ng su\u1ea5t c\u1ee7a b\u1ed9 thu ph\u00e1t v\u00e0 gi\u1edbi h\u1ea1n nhi\u1ec7t c\u1ee7a khung m\u00e1y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c m\u00f4-\u0111un 25GBASE-SR h\u1ed7 tr\u1ee3 <strong>DOM\/DDM<\/strong>, cho ph\u00e9p gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9, c\u00f4ng su\u1ea5t quang, d\u00f2ng ph\u00e2n c\u1ef1c v\u00e0 \u0111i\u1ec7n \u00e1p\u2014r\u1ea5t h\u1eefu \u00edch cho vi\u1ec7c x\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u00e0 b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f C\u00e1c th\u1ef1c ti\u1ec5n tri\u1ec3n khai t\u1ed1t nh\u1ea5t<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1eed d\u1ee5ng lo\u1ea1i s\u1ee3i quang \u0111\u00fang ti\u00eau chu\u1ea9n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai m\u1edbi, <strong>OM4<\/strong> mang l\u1ea1i bi\u00ean d\u1ef1 ph\u00f2ng l\u00fd t\u01b0\u1edfng v\u00e0 gi\u00e1 tr\u1ecb v\u00f2ng \u0111\u1eddi cao. <strong><p>Up to 550 m (1,800 ft)<\/p><\/strong> v\u1eabn kh\u1ea3 thi cho c\u00e1c kho\u1ea3ng c\u00e1ch ng\u1eafn trong c\u00f9ng t\u1ee7 ho\u1eb7c gi\u1eefa c\u00e1c t\u1ee7 li\u1ec1n k\u1ec1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00e0m s\u1ea1ch &amp; ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ee5i b\u1ea9n v\u00e0 nhi\u1ec5m b\u1ea9n g\u00e2y suy hao v\u00e0 l\u1ed7i\u2014vi\u1ec7c ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch ph\u1ea3i l\u00e0 quy tr\u00ecnh ti\u00eau chu\u1ea9n trong m\u1ecdi l\u1ea7n l\u1eafp \u0111\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\"><strong>C\u00e1c m\u00f4-\u0111un SFP28<\/strong><\/a> v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc t\u01b0\u01a1ng th\u00edch v\u1edbi <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-24689-sfp-cages-connectors.htm\"><strong>v\u1ecf b\u1ecdc SFP+<\/strong><\/a>, nh\u01b0ng h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 25G ph\u1ee5 thu\u1ed9c v\u00e0o firmware c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 v\u00e0 ch\u00ednh s\u00e1ch c\u1ee7a nh\u00e0 cung c\u1ea5p chuy\u1ec3n m\u1ea1ch. Lu\u00f4n x\u00e1c th\u1ef1c t\u00ednh t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c t\u1ee7 m\u00e1y ch\u1ee7 m\u1eadt \u0111\u1ed9 cao (x\u1eed l\u00fd t\u00ednh to\u00e1n, \u1ea3o h\u00f3a, c\u1ee5m AI)<\/p><\/li><li><p>M\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u ki\u1ebfn tr\u00fac leaf-spine<\/p><\/li><li><p>Trung t\u00e2m d\u1eef li\u1ec7u t\u1ea1i bi\u00ean v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u c\u1ee1 nh\u1ecf (micro data centers)<\/p><\/li><li><p>C\u00e1c ph\u00e2n \u0111o\u1ea1n truy nh\u1eadp vi\u1ec5n th\u00f4ng v\u00e0 fronthaul 5G khi s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a mode (MMF)<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f V\u00ed d\u1ee5 s\u1ea3n ph\u1ea9m: M\u00f4-\u0111un LINK-PP SFP28 25GBASE-SR<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559.webp\" alt=\"LINK-PP SFP28 25GBASE-SR\" class=\"wp-image-4539\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ad1fc9e056854a1abffed59610842559-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi tri\u1ec3n khai c\u00f4ng nghi\u1ec7p v\u00e0 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, m\u00f4-\u0111un <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476099.htm\"><strong>LINK-PP LS-MM8525-S1I<\/strong><\/a> SFP28 25GBASE-SR cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 k\u00eanh 25 Gbps<\/p><\/li><li><p>B\u1ed9 ph\u00e1t VCSEL b\u01b0\u1edbc s\u00f3ng 850 nm<\/p><\/li><li><p>giao di\u1ec7n LC duplex<\/p><\/li><li><p>Ph\u1ea1m vi v\u1edbi s\u1ee3i OM3\/OM4 l\u00ean t\u1edbi ~70 m \/ ~100 m<\/p><\/li><li><p>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/p><\/li><li><p>C\u00e1c t\u00f9y ch\u1ecdn nhi\u1ec7t \u0111\u1ed9 d\u00e0nh cho m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >25GBASE-SR c\u00f3 t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi SFP+ kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t v\u1eadt l\u00fd th\u00ec c\u00f3, nh\u01b0ng c\u00e1c thi\u1ebft b\u1ecb 10G kh\u00f4ng th\u1ec3 \u0111\u1ecdc t\u00edn hi\u1ec7u quang 25G. N\u1ec1n t\u1ea3ng ch\u1ee7 ph\u1ea3i h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 25 Gbps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f4i n\u00ean ch\u1ecdn OM3 hay OM4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">OM3 chi ph\u00ed hi\u1ec7u qu\u1ea3 h\u01a1n cho c\u00e1c \u0111o\u1ea1n c\u00e1p ng\u1eafn; <strong>OM4 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong> cho c\u00e1c tri\u1ec3n khai m\u1edbi do c\u00f3 bi\u00ean d\u1ef1 ph\u00f2ng v\u00e0 ph\u1ea1m vi t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u27a1\ufe0f K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>25GBASE-LR<\/strong> cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch leaf trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i c\u00f3 m\u1eadt \u0111\u1ed9 cao. V\u1edbi<br> <strong>850 nm VCSEL<br><\/strong> quang h\u1ecdc, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p v\u00e0 h\u1ed7 tr\u1ee3<br> <strong>S\u1ee3i quang \u0111a mode OM3\/OM4<\/strong>, n\u00f3 cho ph\u00e9p n\u00e2ng c\u1ea5p d\u1ec5 d\u00e0ng t\u1eeb 10G v\u00e0 cung c\u1ea5p n\u1ec1n t\u1ea3ng quang h\u1ecdc cho vi\u1ec7c t\u1ed5ng h\u1ee3p 100G (4\u00d725G) v\u00e0 cao h\u01a1n n\u1eefa.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady \u0111\u1ea1t chu\u1ea9n c\u00f4ng nghi\u1ec7p,<br>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476099.htm\"><strong>m\u00f4-\u0111un SFP28 25GBASE-SR c\u1ee7a LINK-PP<br><\/strong><\/a> mang l\u1ea1i hi\u1ec7u n\u0103ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c m\u1ea1ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 doanh nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c module quang SFP28 25GBASE-SR k\u00edch ho\u1ea1t c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn kho\u1ea3ng c\u00e1ch, m\u1eadt \u0111\u1ed9 cao gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, bao g\u1ed3m ph\u1ea1m vi truy\u1ec1n tr\u00ean c\u00e1p OM3\/OM4, diode ph\u00e1t s\u00e1ng laser m\u1eb7t ph\u1eb3ng (VCSEL) v\u00e0 c\u00e1c th\u1ef1c ti\u1ec5n tri\u1ec3n khai t\u1ed1t nh\u1ea5t.<\/p>","protected":false},"author":1,"featured_media":4540,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[16,21,26],"class_list":["post-4541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-link-pp-25g-sfp28-optical-modules","tag-fiber-optic-cage-and-connector","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4541","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=4541"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4541\/revisions"}],"predecessor-version":[{"id":10950,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4541\/revisions\/10950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4540"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}