{"id":2833,"date":"2026-03-26T00:00:00","date_gmt":"2026-03-26T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/qsfp28-msa-explained-compatibility-standards-risks\/"},"modified":"2026-06-22T03:46:26","modified_gmt":"2026-06-22T03:46:26","slug":"qsfp28-msa-explained-compatibility-standards-risks","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp28-msa-explained-compatibility-standards-risks","title":{"rendered":"QSFP28 MSA \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch: T\u01b0\u01a1ng th\u00edch, ti\u00eau chu\u1ea9n v\u00e0 r\u1ee7i ro"},"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\/28368bcfa4a34a62b9c73e0e991aa66d.jpg\" alt=\"QSFP28 MSA Explained: Compatibility, Standards, and Risks\" class=\"wp-image-2824\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28368bcfa4a34a62b9c73e0e991aa66d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28368bcfa4a34a62b9c73e0e991aa66d-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28368bcfa4a34a62b9c73e0e991aa66d-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28368bcfa4a34a62b9c73e0e991aa66d-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28368bcfa4a34a62b9c73e0e991aa66d-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i v\u00e0 m\u1ea1ng doanh nghi\u1ec7p t\u1ed1c \u0111\u1ed9 cao, k\u1ebft n\u1ed1i 100G \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n m\u1edbi. Trong s\u1ed1 c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\">b\u1ed9 thu ph\u00e1t QSFP28<\/a>, m\u1ed9t d\u1ea1ng h\u00ecnh h\u1ecdc nh\u1ecf g\u1ecdn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p th\u00f4ng l\u01b0\u1ee3ng 100 Gbps b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng b\u1ed1n k\u00eanh song song 25 G. \u1ede trung t\u00e2m c\u1ee7a s\u1ef1 ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i n\u00e0y l\u00e0 kh\u00e1i ni\u1ec7m v\u1ec1 Ti\u00eau chu\u1ea9n t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 s\u1ea3n xu\u1ea5t QSFP28 (QSFP28 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>\u2014m\u1ed9t ti\u00eau chu\u1ea9n nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa nhi\u1ec1u nh\u00e0 cung c\u1ea5p kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng \u0111\u00e2y l\u00e0 th\u1ef1c t\u1ebf quan tr\u1ecdng:<br\/>m\u1eb7c d\u00f9 QSFP28 MSA quy \u0111\u1ecbnh c\u00e1c k\u00edch th\u01b0\u1edbc c\u01a1 h\u1ecdc, giao di\u1ec7n \u0111i\u1ec7n v\u00e0 h\u00e0nh vi quang h\u1ecdc c\u01a1 b\u1ea3n, ti\u00eau chu\u1ea9n n\u00e0y kh\u00f4ng \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch li\u1ec1n m\u1ea1ch trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kho\u1ea3ng c\u00e1ch gi\u1eefa <em>vi\u1ec7c chu\u1ea9n h\u00f3a<\/em> and <em>v\u00e0 hi\u1ec7u n\u0103ng th\u1ef1c t\u1ebf<\/em> ch\u00ednh l\u00e0 l\u00fd do v\u00ec sao nhi\u1ec1u k\u1ef9 s\u01b0 m\u1ea1ng th\u01b0\u1eddng t\u00ecm ki\u1ebfm c\u00e1c c\u1ee5m t\u1eeb nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><em>\u201cSFP tu\u00e2n th\u1ee7 MSA l\u00e0 g\u00ec?\u201d<\/em><\/p><\/li><li><p><em>\u201c\u2018T\u01b0\u01a1ng th\u00edch MSA\u2019 th\u1ef1c s\u1ef1 c\u00f3 ngh\u0129a l\u00e0 g\u00ec?\u201d<\/em><\/p><\/li><li><p><em>\u201cT\u1ea1i sao c\u00e1c module QSFP28 l\u1ea1i th\u1ea5t b\u1ea1i ngay c\u1ea3 khi ch\u00fang tu\u00e2n theo MSA?\u201d<\/em><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c module kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f4ng t\u1eafc nh\u1eadn di\u1ec7n<\/p><\/li><li><p>l\u1ed7i li\u00ean k\u1ebft do ph\u1ea7n m\u1ec1m\u56fa\u4ef6 ho\u1eb7c <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fec-forward-error-correction-in-optical-communication\/\">FEC<\/a> s\u1ef1 kh\u00f4ng kh\u1edbp<\/p><\/li><li><p>s\u1ef1 b\u1ea5t \u1ed5n v\u1ec1 hi\u1ec7u n\u0103ng d\u00f9 module \u201ctu\u00e2n th\u1ee7 MSA\u201d<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y l\u00e0m n\u1ed5i b\u1eadt m\u1ed9t s\u1ef1 th\u1eadt quan tr\u1ecdng: QSFP28 MSA \u0111\u1ea3m b\u1ea3o m\u1ed9t n\u1ec1n t\u1ea3ng chung\u2014nh\u01b0ng vi\u1ec7c tri\u1ec3n khai th\u00e0nh c\u00f4ng c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 h\u01a1n h\u1eb3n ti\u00eau chu\u1ea9n \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u00e0 th\u1ef1c ti\u1ec5n v\u1ec1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>The <strong>\u00fd ngh\u0129a th\u1ef1c s\u1ef1 c\u1ee7a QSFP28 MSA<\/strong> v\u00e0 nh\u1eefng g\u00ec ti\u00eau chu\u1ea9n n\u00e0y th\u1ef1c s\u1ef1 quy \u0111\u1ecbnh<\/p><\/li><li><p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa <strong>vi\u1ec7c tu\u00e2n th\u1ee7 MSA v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch th\u1ef1c t\u1ebf<\/strong><\/p><\/li><li><p>C\u00e1ch so s\u00e1nh QSFP28 v\u1edbi SFP v\u00e0 c\u00e1c lo\u1ea1i b\u1ed9 thu ph\u00e1t kh\u00e1c<\/p><\/li><li><p>Li\u1ec7u QSFP28 c\u00f3 h\u1ed7 tr\u1ee3 <strong>c\u00e1p quang \u0111\u01a1n mode hay \u0111a mode<\/strong><\/p><\/li><li><p>The <strong>c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ea5t b\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t trong th\u1ef1c t\u1ebf<\/strong> (d\u1ef1a tr\u00ean nh\u1eadn \u0111\u1ecbnh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng)<\/p><\/li><li><p>A <strong>danh s\u00e1ch ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc<\/strong> nh\u1eb1m \u0111\u1ea3m b\u1ea3o vi\u1ec7c tri\u1ec3n khai QSFP28 \u0111\u00e1ng tin c\u1eady<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch cho m\u1ed9t m\u1ea1ng 100G m\u1edbi, kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, hay t\u00ecm ngu\u1ed3n cung c\u1ea5p c\u00e1c module quang \u0111\u00e1ng tin c\u1eady, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u00e0 \u00edt r\u1ee7i ro.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c ph\u00e2n t\u00edch c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n: QSFP28 MSA th\u1ef1c ch\u1ea5t l\u00e0 g\u00ec, v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 QSFP28 MSA L\u00e0 G\u00ec V\u00e0 V\u00ec Sao N\u00f3 Quan Tr\u1ecdng<\/h2>\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\/c282be35616a46b38ec787a76018f748.jpg\" alt=\"What Is QSFP28 MSA and Why It Matters\" class=\"wp-image-2825\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c282be35616a46b38ec787a76018f748.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c282be35616a46b38ec787a76018f748-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c282be35616a46b38ec787a76018f748-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c282be35616a46b38ec787a76018f748-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c282be35616a46b38ec787a76018f748-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >QSFP28 C\u00f3 Ngh\u0129a L\u00e0 G\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 (Quad Small Form-factor Pluggable 28) l\u00e0 m\u1ed9t chu\u1ea9n t\u1ed1c \u0111\u1ed9 cao <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488422.htm\">b\u1ed9 thu ph\u00e1t quang<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng Ethernet 100 Gigabit (100G). Chu\u1ea9n n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau \u0111\u00f3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>4 k\u00eanh \u0111\u1ed9c l\u1eadp, m\u1ed7i k\u00eanh ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 25 Gbps<\/strong><\/p><\/li><li><p><strong>T\u1ed5ng b\u0103ng th\u00f4ng t\u00edch h\u1ee3p l\u00ean \u0111\u1ebfn 100 Gbps<\/strong><\/p><\/li><li><p>Y\u1ebfu t\u1ed1 h\u00ecnh d\u1ea1ng nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng (hot-pluggable) d\u00e0nh cho b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472126.htm\">M\u00f4-\u0111un QSFP28<\/a> \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>Trung t\u00e2m d\u1eef li\u1ec7u (ki\u1ebfn tr\u00fac spine-leaf)<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-modules-high-performance-computing-applications\/\">\u0110i\u1ec7n to\u00e1n hi\u1ec7u n\u0103ng cao<\/a> (T\u00ednh to\u00e1n hi\u1ec7u n\u0103ng cao \u2013 HPC)<\/p><\/li><li><p>M\u1ea1ng l\u00f5i doanh nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >MSA (Th\u1ecfa thu\u1eadn \u0110a ngu\u1ed3n) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MSA (Multi-Source Agreement \u2013 Th\u1ecfa thu\u1eadn \u0110a ngu\u1ed3n) l\u00e0 m\u1ed9t \u0111\u1eb7c t\u1ea3 do ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u1edfi x\u01b0\u1edbng, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t nh\u1eb1m chu\u1ea9n h\u00f3a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd<\/strong> (k\u00edch th\u01b0\u1edbc, lo\u1ea1i \u0111\u1ea7u n\u1ed1i)<\/p><\/li><li><p><strong>Giao di\u1ec7n \u0111i\u1ec7n<\/strong> (c\u1ea5u tr\u00fac k\u00eanh, t\u00edn hi\u1ec7u)<\/p><\/li><li><p><strong>Giao di\u1ec7n qu\u1ea3n l\u00fd<\/strong> (giao ti\u1ebfp I2C, ch\u1ea9n \u0111o\u00e1n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi QSFP28, MSA \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c module t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau c\u00f3 th\u1ec3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705 V\u1eeba kh\u00edt v\u00e0o c\u00f9ng m\u1ed9t c\u1ed5ng QSFP28<br\/>\u2705 Tu\u00e2n theo c\u00f9ng m\u1ed9t c\u1ea5u tr\u00fac t\u00edn hi\u1ec7u \u0111i\u1ec7n<br\/>\u2705 Cung c\u1ea5p ch\u1ee9c n\u0103ng ch\u1ea9n \u0111o\u00e1n s\u1ed1 chu\u1ea9n h\u00f3a (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/troubleshoot-optical-transceivers-digital-diagnostic-monitoring\/\">DDM<\/a>)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u01b0u \u00fd quan tr\u1ecdng: Nh\u1eefng g\u00ec MSA QSFP28 Th\u1ef1c hi\u1ec7n <em>NOT<\/em> \u0110\u1ea3m b\u1ea3o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 n\u01a1i ph\u1ea7n l\u1edbn s\u1ef1 nh\u1ea7m l\u1eabn \u2014 v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf \u2014 b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 MSA QSFP28 x\u00e1c \u0111\u1ecbnh n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n, nh\u01b0ng n\u00f3 KH\u00d4NG chu\u1ea9n h\u00f3a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c H\u00e0nh vi firmware c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>\u274c M\u00e3 h\u00f3a EEPROM (nh\u1eadn d\u1ea1ng ID nh\u00e0 cung c\u1ea5p)<\/p><\/li><li><p>\u274c Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch s\u1eeda l\u1ed7i truy\u1ec1n d\u1eabn (FEC)<\/p><\/li><li><p>\u274c T\u01b0\u01a1ng t\u00e1c gi\u1eefa h\u1ec7 \u0111i\u1ec1u h\u00e0nh b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c m\u1ee9c ASIC<\/p><\/li><li><p>\u274c Ch\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c \u0111\u1ed9 tin c\u1eady s\u1ea3n ph\u1ea9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y gi\u1ea3i th\u00edch m\u1ed9t v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn: Ngay c\u1ea3 khi hai module QSFP28 \u0111\u1ec1u \u201ctu\u00e2n th\u1ee7 MSA\u201d, ch\u00fang v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch tr\u00ean c\u00f9ng m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao MSA QSFP28 Quan tr\u1ecdng trong Tri\u1ec3n khai Th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 MSA QSFP28 l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >T\u00ednh Linh ho\u1ea1t trong Vi\u1ec7c Thu Mua T\u1eeb Nhi\u1ec1u Nh\u00e0 Cung C\u1ea5p<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p \u0111\u1ed9i mua s\u1eafm tr\u00e1nh b\u1ecb ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t nh\u00e0 cung c\u1ea5p duy nh\u1ea5t<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 t\u1ed1i \u01b0u chi ph\u00ed b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >Kh\u1ea3 N\u0103ng M\u1edf R\u1ed9ng Thi\u1ebft K\u1ebf M\u1ea1ng<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o y\u1ebfu t\u1ed1 h\u00ecnh d\u1ea1ng nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n b\u1ed9 h\u1ea1 t\u1ea7ng 100G<\/p><\/li><li><p>\u0110\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c n\u00e2ng c\u1ea5p t\u1eeb 40G (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP+<\/a>) l\u00ean 100G (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482496.htm\">QSFP28<br><\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >Nh\u1eadn Th\u1ee9c R\u1ee7i Ro V\u1ec1 T\u00ednh T\u01b0\u01a1ng Th\u00edch<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00fap k\u1ef9 s\u01b0 nh\u1eadn ra r\u1eb1ng: <em>\u201cTu\u00e2n th\u1ee7 MSA\u201d KH\u00d4NG c\u00f3 ngh\u0129a l\u00e0 c\u1eafm v\u00e0o l\u00e0 ch\u1ea1y ngay<\/em><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Kho\u1ea3ng C\u00e1ch \u1ea2o MSA (Th\u00f4ng tin Nh\u1eadn th\u1ee9c Tr\u1ecdng y\u1ebfu)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t kh\u00e1i ni\u1ec7m then ch\u1ed1t d\u00e0nh cho k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 344px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"344\"><p>K\u1ef3 v\u1ecdng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Th\u1ef1c t\u1ebf<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"344\"><p>MSA = t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MSA = ch\u1ec9 v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00e0 n\u1ec1n t\u1ea3ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"344\"><p>T\u1ea5t c\u1ea3 c\u00e1c module QSFP28 \u0111\u1ec1u t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c v\u1edbi nhau<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u1eabn c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh theo nh\u00e0 cung c\u1ea5p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"344\"><p>Chu\u1ea9n \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ea5t l\u01b0\u1ee3ng tri\u1ec3n khai m\u1edbi quy\u1ebft \u0111\u1ecbnh t\u00ednh \u1ed5n \u0111\u1ecbnh<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>D\u00f2ng cu\u1ed1i c\u00f9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>QSFP28<br><\/strong> x\u00e1c \u0111\u1ecbnh d\u1ea1ng 100G v\u00e0 ki\u1ebfn tr\u00fac k\u00eanh<\/p><\/li><li><p><strong>MSA<\/strong> x\u00e1c \u0111\u1ecbnh ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p chung cho d\u1ea1ng \u0111\u00f3<\/p><\/li><li><p>Nh\u01b0ng th\u00e0nh c\u00f4ng trong th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p><ul><li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>S\u1ef1 \u0111\u1ed3ng b\u1ed9 h\u00f3a firmware<\/p><\/li><li><p>C\u00e1c quy tr\u00ecnh tri\u1ec3n khai \u0111\u00fang c\u00e1ch<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd \u0111i s\u00e2u h\u01a1n v\u00e0o m\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng \u0111\u1eb7t ra: \u201cT\u01b0\u01a1ng th\u00edch MSA\u201d th\u1ef1c s\u1ef1 c\u00f3 ngh\u0129a l\u00e0 g\u00ec \u2014 v\u00e0 t\u1ea1i sao \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 \u201cT\u01b0\u01a1ng th\u00edch MSA\u201d th\u1ef1c s\u1ef1 c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cT\u01b0\u01a1ng th\u00edch MSA\u201d c\u00f3 ngh\u0129a l\u00e0 b\u1ed9 thu ph\u00e1t tu\u00e2n theo c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ea7n c\u1ee9ng v\u00e0 giao di\u1ec7n chung do Th\u1ecfa thu\u1eadn \u0110a Ngu\u1ed3n (MSA) quy \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, module QSFP28 t\u01b0\u01a1ng th\u00edch MSA:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>V\u1eeba kh\u00edt v\u1edbi b\u1ea5t k\u1ef3 c\u1ed5ng QSFP28 n\u00e0o<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00f9ng c\u1ea5u tr\u00fac k\u00eanh \u0111i\u1ec7n (4\u00d725G)<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 ti\u00eau chu\u1ea9n (DDM\/DOM)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng \u0111\u00e2y l\u00e0 \u0111i\u1ec3m m\u1ea5u ch\u1ed1t: T\u00ednh t\u01b0\u01a1ng th\u00edch MSA ch\u1ec9 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u1ec1 m\u1eb7t v\u1eadt l\u00fd \u2014 ch\u1ee9 kh\u00f4ng \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t v\u1eadn h\u00e0nh<strong>.<\/strong><\/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\/0e21d2a242ae441d8c9556f610d3f977.jpg\" alt=\"What Does \u201cMSA Compatible\u201d Really Mean?\" class=\"wp-image-2826\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0e21d2a242ae441d8c9556f610d3f977.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0e21d2a242ae441d8c9556f610d3f977-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0e21d2a242ae441d8c9556f610d3f977-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0e21d2a242ae441d8c9556f610d3f977-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0e21d2a242ae441d8c9556f610d3f977-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u01b0\u01a1ng th\u00edch MSA so v\u1edbi T\u01b0\u01a1ng th\u00edch Nh\u00e0 cung c\u1ea5p (S\u1ef1 kh\u00e1c bi\u1ec7t then ch\u1ed1t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00ednh s\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y l\u00e0 n\u01a1i ph\u00e1t sinh ph\u1ea7n l\u1edbn c\u00e1c v\u1ea5n \u0111\u1ec1 tri\u1ec3n khai.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 223px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"223\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u00dd ngh\u0129a c\u1ee7a n\u00f3<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"223\"><p><strong>T\u01b0\u01a1ng th\u00edch MSA<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tu\u00e2n th\u1ee7 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ea7n c\u1ee9ng c\u00f4ng nghi\u1ec7p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ebd v\u1eeba kh\u00edt v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00e0 b\u1eadt ngu\u1ed3n \u0111\u01b0\u1ee3c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"223\"><p><strong>T\u01b0\u01a1ng th\u00edch Nh\u00e0 cung c\u1ea5p<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c l\u1eadp tr\u00ecnh\/th\u1eed nghi\u1ec7m d\u00e0nh ri\u00eang cho th\u01b0\u01a1ng hi\u1ec7u switch c\u1ee5 th\u1ec3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ea3n ph\u1ea9m chung chung <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\">m\u00f4-\u0111un QSFP28<\/a> c\u00f3 th\u1ec3 tu\u00e2n th\u1ee7 MSA<\/p><\/li><li><p>Nh\u01b0ng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a EEPROM \u0111\u00fang c\u00e1ch, n\u00f3 c\u00f3 th\u1ec3:<\/p><ul><li><p>Kh\u00f4ng \u0111\u01b0\u1ee3c switch nh\u1eadn di\u1ec7n<\/p><\/li><li><p>G\u00e2y ra c\u1ea3nh b\u00e1o kh\u00f4ng t\u01b0\u01a1ng th\u00edch<\/p><\/li><li><p>V\u00f4 hi\u1ec7u h\u00f3a ho\u00e0n to\u00e0n c\u1ed5ng<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao \u201cT\u01b0\u01a1ng th\u00edch MSA\u201d th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 cung c\u1ea5p s\u1eed d\u1ee5ng c\u1ee5m \u201ct\u01b0\u01a1ng th\u00edch MSA\u201d trong ti\u1ebfp th\u1ecb nh\u1eb1m ng\u1ee5 \u00fd:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201cHo\u1ea1t \u0111\u1ed9ng v\u1edbi m\u1ecdi thi\u1ebft b\u1ecb\u201d<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, d\u1ef1a tr\u00ean c\u1ea3 h\u00e0nh vi ng\u00e0nh v\u00e0 ph\u1ea3n h\u1ed3i t\u1eeb ng\u01b0\u1eddi d\u00f9ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ed1 switch \u00e1p d\u1ee5ng kh\u00f3a nh\u00e0 cung c\u1ea5p (danh s\u00e1ch tr\u1eafng)<\/p><\/li><li><p>Nh\u1eefng switch kh\u00e1c y\u00eau c\u1ea7u:<\/p><ul><li><p>C\u00e1c phi\u00ean b\u1ea3n firmware c\u1ee5 th\u1ec3<\/p><\/li><li><p>C\u00e0i \u0111\u1eb7t FEC kh\u1edbp nhau<\/p><\/li><\/ul><\/li><li><p>Ngay c\u1ea3 khi li\u00ean k\u1ebft \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp:<\/p><ul><li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn: MSA = c\u1eafm v\u00e0o l\u00e0 ch\u1ea1y (\u0111i\u1ec1u n\u00e0y KH\u00d4NG \u0111\u00fang).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u1edbp \u1ea9n: EEPROM &amp; Firmware<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb1ng sau m\u1ed7i module QSFP28 l\u00e0 m\u1ed9t chip nh\u1edb nh\u1ecf (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/eeprom-electrically-erasable-programmable-read-only-memory\/\">B\u1ed9 nh\u1edb EEPROM<\/a>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u h\u1ed7 tr\u1ee3<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ean nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/li><li><p>M\u00e3 linh ki\u1ec7n<\/p><\/li><li><p>M\u00e3 \u0111\u1ecbnh danh t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Switch \u0111\u1ecdc d\u1eef li\u1ec7u n\u00e0y trong qu\u00e1 tr\u00ecnh kh\u1edfi t\u1ea1o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu module kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Switch c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i n\u00f3<\/p><\/li><li><p>Ho\u1eb7c v\u1eadn h\u00e0nh \u1edf ch\u1ebf \u0111\u1ed9 suy gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao hai m\u00f4-\u0111un gi\u1ed1ng h\u1ec7t nhau v\u1ec1 m\u1eb7t v\u1eadt l\u00fd c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf (d\u1ef1a tr\u00ean tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0 th\u01b0\u1eddng b\u00e1o c\u00e1o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c L\u1ed7i \u201cm\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>\u274c Li\u00ean k\u1ebft kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng d\u00f9 c\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ea5u n\u1ed1i \u0111\u00fang<\/p><\/li><li><p>\u274c Li\u00ean k\u1ebft b\u1ecb gi\u1eadt (flapping) ng\u1eabu nhi\u00ean khi c\u00f3 t\u1ea3i<\/p><\/li><li><p>\u274c T\u1ef1 \u0111\u1ed9ng gi\u1ea3m t\u1ed1c \u0111\u1ed9 (t\u1eeb 100G xu\u1ed1ng 40G ho\u1eb7c th\u1ea5p h\u01a1n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nguy\u00ean nh\u00e2n g\u1ed1c ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng kh\u1edbp EEPROM<\/p><\/li><li><p>Kh\u00f4ng t\u01b0\u01a1ng th\u00edch firmware<\/p><\/li><li><p>Kh\u00f4ng \u0111\u1ed3ng b\u1ed9 FEC<\/p><\/li><li><p>Ch\u1ea5t l\u01b0\u1ee3ng quang k\u00e9m (\u0111\u1eb7c bi\u1ec7t \u1edf c\u00e1c m\u00f4-\u0111un gi\u00e1 r\u1ebb)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Khi n\u00e0o t\u00ednh t\u01b0\u01a1ng th\u00edch MSA th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un QSFP28 t\u01b0\u01a1ng th\u00edch MSA th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 C\u00e1c switch s\u1eed d\u1ee5ng n\u1ec1n t\u1ea3ng m\u1edf (kh\u00f4ng b\u1ecb kh\u00f3a b\u1edfi nh\u00e0 cung c\u1ea5p)<\/p><\/li><li><p>\u2714 C\u00e1c m\u00f4-\u0111un \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a s\u1eb5n cho th\u01b0\u01a1ng hi\u1ec7u \u0111\u00edch<\/p><\/li><li><p>\u2714 C\u00e1c phi\u00ean b\u1ea3n firmware \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9<\/p><\/li><li><p>\u2714 Th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa th\u1ef1c ti\u1ec5n<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u01b0\u01a1ng th\u00edch MSA = chu\u1ea9n h\u00f3a \u1edf m\u1ee9c ph\u1ea7n c\u1ee9ng<\/p><\/li><li><p>T\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p = kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng trong th\u1ef1c t\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n coi \u201ct\u01b0\u01a1ng th\u00edch MSA\u201d l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 l\u1eddi \u0111\u1ea3m b\u1ea3o<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi mua ho\u1eb7c tri\u1ec3n khai <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491586.htm\">100G QSFP28<\/a> module:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi model switch c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n<\/p><\/li><li><p>Y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 m\u00e3 h\u00f3a t\u1eeb nh\u00e0 cung c\u1ea5p n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc b\u00ean th\u1ee9 ba<\/p><\/li><li><p>Th\u1eed nghi\u1ec7m module trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m<\/p><\/li><li><p>Tr\u00e1nh gi\u1ea3 \u0111\u1ecbnh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd l\u00e0m r\u00f5 m\u1ed9t c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn kh\u00e1c trong thi\u1ebft k\u1ebf m\u1ea1ng: S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa QSFP28 v\u00e0 SFP l\u00e0 g\u00ec, v\u00e0 khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 QSFP28 so v\u1edbi SFP: Gi\u1ea3i th\u00edch nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi thi\u1ebft k\u1ebf ho\u1eb7c n\u00e2ng c\u1ea5p m\u1ea1ng, m\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0: S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa SFP v\u00e0 QSFP28 l\u00e0 g\u00ec \u2014 v\u00e0 b\u1ea1n n\u00ean d\u00f9ng lo\u1ea1i n\u00e0o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491548.htm\">b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi<\/a>, ch\u00fang \u0111\u1ea3m nhi\u1ec7m nh\u1eefng vai tr\u00f2 r\u1ea5t kh\u00e1c nhau trong ki\u1ebfn tr\u00fac m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/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\/33d2bb2298244efe84275d24ca7ed165.jpg\" alt=\"QSFP28 vs. SFP: Key Differences\" class=\"wp-image-2827\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/33d2bb2298244efe84275d24ca7ed165.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/33d2bb2298244efe84275d24ca7ed165-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/33d2bb2298244efe84275d24ca7ed165-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/33d2bb2298244efe84275d24ca7ed165-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/33d2bb2298244efe84275d24ca7ed165-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 205px;\"\/><col style=\"width: 244px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>SFP \/ SFP+ \/ SFP28<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>T\u00ean \u0111\u1ea7y \u0111\u1ee7<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>Typical Medium<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quad Small Form-factor Pluggable 28<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>C\u1ea5u tr\u00fac k\u00eanh (lane)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>1 k\u00eanh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 k\u00eanh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>T\u1ed1c \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>1G \/ 10G \/ 25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100G (4 \u00d7 25G)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p><a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\">LC<\/a> (s\u1ee3i quang duplex)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/understanding-polarity-in-mtp-mpo-system-for-signal-integrity\/\">MPO\/MTP<\/a> (nhi\u1ec1u s\u1ee3i quang)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>M\u1eadt \u0111\u1ed9 c\u1ed5ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (b\u0103ng th\u00f4ng m\u1ed7i c\u1ed5ng g\u1ea5p 4 l\u1ea7n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"205\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"244\"><p>Truy c\u1eadp \/ bi\u00ean m\u1ea1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Spine \/ l\u00f5i \/ t\u1ed5ng h\u1ee3p<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00e1c bi\u1ec7t v\u1ec1 ki\u1ebfn tr\u00fac: \u0110\u01a1n k\u00eanh so v\u1edbi \u0111a k\u00eanh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt l\u1edbn nh\u1ea5t n\u1eb1m \u1edf c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\"><strong>SFP<\/strong><\/a><strong> <\/strong>(bao g\u1ed3m <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28<\/a>) s\u1eed d\u1ee5ng:<\/p><ul><li><p><strong>1 k\u00eanh<\/strong> (t\u1ed1i \u0111a 25Gbps)<\/p><\/li><\/ul><\/li><li><p><strong>QSFP28<br><\/strong> s\u1eed d\u1ee5ng:<\/p><ul><li><p><strong>4 k\u00eanh song song<\/strong>, m\u1ed7i k\u00eanh 25Gbps<\/p><\/li><li><p>K\u1ebft h\u1ee3p th\u00e0nh 100Gbps<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf \u0111a k\u00eanh n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 gi\u00fap QSFP28 cung c\u1ea5p b\u0103ng th\u00f4ng cao trong m\u1ed9t d\u1ea1ng h\u00ecnh nh\u1ecf g\u1ecdn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00e1c bi\u1ec7t v\u1ec1 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng (v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p cho t\u1eebng lo\u1ea1i)<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >SFP \/ SFP28 \u2014 L\u1edbp truy c\u1eadp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7<\/p><\/li><li><p>M\u1ea1ng bi\u00ean doanh nghi\u1ec7p<\/p><\/li><li><p>Li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i l\u00ean m\u00e1y ch\u1ee7 10G ho\u1eb7c 25G<\/p><\/li><li><p>Chuy\u1ec3n ti\u1ebfp t\u1eeb switch truy c\u1eadp l\u00ean switch t\u1eadp h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >QSFP28 \u2014 L\u00f5i &amp; Spine Trung t\u00e2m D\u1eef li\u1ec7u<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng dung l\u01b0\u1ee3ng cao<\/p><\/li><li><p>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quy m\u00f4 \u0111\u00e1m m\u00e2y<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa spine v\u00e0 leaf<\/p><\/li><li><p>Li\u00ean k\u1ebft 100G gi\u1eefa c\u00e1c switch<\/p><\/li><li><p>C\u00e1c c\u1ee5m t\u00ednh to\u00e1n hi\u1ec7u n\u0103ng cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u1ea3 n\u0103ng chia t\u00e1ch (\u01afu \u0111i\u1ec3m quan tr\u1ecdng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u01b0u \u0111i\u1ec3m l\u1edbn c\u1ee7a QSFP28: C\u00f3 th\u1ec3 chia t\u00e1ch th\u00e0nh nhi\u1ec1u li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1 \u00d7 100G QSFP28<br\/>\u27a1\ufe0f c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh<\/p><\/li><li><p>4 \u00d7 k\u1ebft n\u1ed1i SFP28 25G (th\u00f4ng qua c\u00e1p chia t\u00e1ch)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh n\u0103ng n\u00e0y cho ph\u00e9p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft k\u1ebf m\u1ea1ng linh ho\u1ea1t<\/p><\/li><li><p>N\u00e2ng c\u1ea5p d\u1ea7n t\u1eeb 25G l\u00ean 100G<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 t\u01b0\u01a1ng th\u00edch c\u1ea7n xem x\u00e9t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh linh ho\u1ea1t, c\u00e1c module n\u00e0y KH\u00d4NG th\u1ec3 thay th\u1ebf tr\u1ef1c ti\u1ebfp cho nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c QSFP28 kh\u00f4ng th\u1ec3 c\u1eafm v\u00e0o c\u1ed5ng SFP<\/p><\/li><li><p>\u274c SFP kh\u00f4ng th\u1ec3 c\u1eafm v\u00e0o c\u1ed5ng QSFP28<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi d\u00f9ng chia t\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Y\u00eau c\u1ea7u:<\/p><ul><li><p>H\u1ed7 tr\u1ee3 t\u1eeb switch<\/p><\/li><li><p>C\u1ea5u h\u00ecnh \u0111\u00fang<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u00e1nh \u0111\u1ed5i chi ph\u00ed \u2013 hi\u1ec7u n\u0103ng<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 236px;\"\/><col style=\"width: 224px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"236\"><p>Y\u1ebfu t\u1ed1<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>SFP<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>QSFP28<br><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"236\"><p>Chi ph\u00ed m\u1ed7i module<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"236\"><p>Chi ph\u00ed tr\u00ean m\u1ed7i Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>Cao h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"236\"><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>H\u1ea1n ch\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Xu\u1ea5t s\u1eafc<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi tri\u1ec3n khai quy m\u00f4 l\u1edbn: QSFP28 mang l\u1ea1i hi\u1ec7u qu\u1ea3 d\u00e0i h\u1ea1n t\u1ed1t h\u01a1n d\u00f9 chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u01b0\u1edbng d\u1eabn ra quy\u1ebft \u0111\u1ecbnh th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">SFP\/SFP28<br><\/a> n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u1ea7n \u226425G tr\u00ean m\u1ed7i li\u00ean k\u1ebft<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch b\u1ecb h\u1ea1n ch\u1ebf<\/p><\/li><li><p>M\u1ea1ng t\u1eadp trung \u1edf l\u1edbp truy c\u1eadp<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">QSFP28<br><\/a> n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u1ea7n b\u0103ng th\u00f4ng 100G<\/p><\/li><li><p>B\u1ea1n \u0111ang x\u00e2y d\u1ef1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/p><\/li><li><p>B\u1ea1n mu\u1ed1n t\u00ednh linh ho\u1ea1t khi chia t\u00e1ch<\/p><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP = \u0111\u01a1n k\u00eanh, t\u1ed1c \u0111\u1ed9 th\u1ea5p, k\u1ebft n\u1ed1i bi\u00ean<\/p><\/li><li><p>QSFP28 = \u0111a k\u00eanh, t\u1ed1c \u0111\u1ed9 cao, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng l\u00f5i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang kh\u00f4ng c\u1ea1nh tranh m\u00e0 b\u1ed5 sung l\u1eabn nhau\u2014\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c l\u1edbp kh\u00e1c nhau trong m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y c\u00f9ng tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi tri\u1ec3n khai ph\u1ed5 bi\u1ebfn kh\u00e1c: QSFP28 l\u00e0 single mode hay multimode\u2014v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 QSFP28 l\u00e0 single mode hay multimode? (Gi\u1ea3i th\u00edch SR4 v\u00e0 LR4)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 h\u1ed7 tr\u1ee3 C\u1ea2 hai lo\u1ea1i s\u1ee3i quang single-mode v\u00e0 multimode\u2014s\u1ef1 kh\u00e1c bi\u1ec7t ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i module c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: SR4, LR4, CWDM4).<\/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\/73675e435685433bb96b581d67c9400c.jpg\" alt=\"Is QSFP28 Single Mode or Multimode? (SR4 vs. LR4 Explained)\" class=\"wp-image-2828\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/73675e435685433bb96b581d67c9400c.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/73675e435685433bb96b581d67c9400c-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/73675e435685433bb96b581d67c9400c-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/73675e435685433bb96b581d67c9400c-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/73675e435685433bb96b581d67c9400c-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Hi\u1ec3u hai lo\u1ea1i ch\u00ednh: SR4 v\u00e0 LR4<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >\ud83d\udfe2 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473116.htm\">QSFP28 SR4<\/a> (S\u1ee3i quang multimode \u2013 MMF)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">SR4 = Ph\u1ea1m vi ng\u1eafn (4 k\u00eanh tr\u00ean s\u1ee3i quang multimode)<\/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>Lo\u1ea1i s\u1ee3i: Multimode (OM3 \/ OM4)<\/p><\/li><li><p>\u0110\u1ea7u n\u1ed1i: MPO\/MTP (12 s\u1ee3i)<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh:<\/p><ul><li><p>~70 m (OM3)<\/p><\/li><li><p>~100 m (OM4)<\/p><\/li><\/ul><\/li><li><p>B\u01b0\u1edbc s\u00f3ng: 850nm<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng kho\u1ea3ng c\u00e1ch ng\u1eafn, m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>C\u00e1c tri\u1ec3n khai nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SR4 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ki\u1ebfn tr\u00fac leaf-spine trong c\u00f9ng m\u1ed9t t\u1ee7 ho\u1eb7c h\u00e0ng<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\ud83d\udd35 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491587.htm\">QSFP28 LR4<\/a> (S\u1ee3i quang single mode \u2013 SMF)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">LR4 = Kho\u1ea3ng c\u00e1ch xa (4 b\u01b0\u1edbc s\u00f3ng \u0111\u01b0\u1ee3c gh\u00e9p k\u00eanh tr\u00ean m\u1ed9t c\u1eb7p s\u1ee3i quang \u0111\u01a1n)<\/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>Lo\u1ea1i s\u1ee3i: \u0110\u01a1n mode (OS2)<\/p><\/li><li><p>\u0110\u1ea7u n\u1ed1i: LC duplex<\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh:<\/p><ul><li><p>L\u00ean t\u1edbi 10 km<\/p><\/li><\/ul><\/li><li><p>B\u01b0\u1edbc s\u00f3ng: CWDM (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-cwdm-understanding-coarse-wavelength-division-multiplexing\/\">gh\u00e9p k\u00eanh ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng th\u00f4<\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng khu\u00f4n vi\u00ean<\/p><\/li><li><p>K\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\">DCI<\/a>)<\/p><\/li><li><p>Li\u00ean k\u1ebft \u0111\u01b0\u1eddng tr\u1ee5c kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">LR4 l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng khi kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a s\u1ee3i \u0111a mode<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/qsfp28-100g-sr4-vs-lr4-100g-transceiver-comparison\/\">SR4 so v\u1edbi LR4<\/a>: So s\u00e1nh song song<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 215px;\"\/><col style=\"width: 249px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473118.htm\">SR4<\/a> (\u0110a mode)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/472127.htm\">LR4<\/a> (\u0110\u01a1n mode)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>MMF (OM3\/OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n mode (SMF, OS2)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>\u0110\u1ea7u n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>MPO\/MTP<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC hai chi\u1ec1u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Kho\u1ea3ng c\u00e1ch<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>\u2264100 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u226410 km<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Chi ph\u00ed (module)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Chi ph\u00ed (c\u00e1p quang)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>Cao h\u01a1n (c\u00e1p MPO)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (s\u1ee3i quang LC \u0111\u01a1n gi\u1ea3n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>B\u00ean trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch xa<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" >Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong tri\u1ec3n khai th\u1ef1c t\u1ebf<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean kinh nghi\u1ec7m th\u1ef1c t\u1ebf, nhi\u1ec1u s\u1ef1 c\u1ed1 b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c hi\u1ec3u nh\u1ea7m gi\u1eefa SR4 v\u00e0 LR4:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c Tr\u1ed9n l\u1eabn c\u00e1c lo\u1ea1i s\u1ee3i quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473115.htm\">M\u00f4-\u0111un SR4<\/a> + s\u1ee3i quang \u0111\u01a1n mode \u2192 <strong>l\u1ed7i li\u00ean k\u1ebft<\/strong><\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488423.htm\">M\u00f4-\u0111un LR4<\/a> + s\u1ee3i quang \u0111a mode \u2192 <strong>kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c Kh\u00f4ng kh\u1edbp \u0111\u1ea7u n\u1ed1i<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>MPO (SR4) \u2260 LC (LR4)<br\/>\ud83d\udc49 Y\u00eau c\u1ea7u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p ho\u00e0n to\u00e0n kh\u00e1c nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c Quang h\u1ecdc qu\u00e1 m\u1ea1nh (s\u1eed d\u1ee5ng LR4 cho kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng LR4 cho c\u00e1c li\u00ean k\u1ebft r\u1ea5t ng\u1eafn c\u00f3 th\u1ec3 g\u00e2y ra:<\/p><ul><li><p>T\u00edn hi\u1ec7u qu\u00e1 t\u1ea3i<\/p><\/li><li><p>T\u1ef7 l\u1ec7 l\u1ed7i bit t\u0103ng cao<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >\u0110\u00e1nh \u0111\u1ed5i chi ph\u00ed \u2013 kho\u1ea3ng c\u00e1ch<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa SR4 v\u00e0 LR4 kh\u00f4ng ch\u1ec9 mang t\u00ednh k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n mang t\u00ednh kinh t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Kho\u1ea3ng c\u00e1ch ng\u1eafn (&lt;100 m): <\/strong>SR4 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n v\u1ec1 t\u1ed5ng th\u1ec3<\/p><\/li><li><p><strong>Kho\u1ea3ng c\u00e1ch d\u00e0i (&gt;500 m\u201310 km): <\/strong>LR4 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn kh\u1ea3 thi duy nh\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch ch\u1ecdn \u0111\u00fang lo\u1ea1i QSFP28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng khung ra quy\u1ebft \u0111\u1ecbnh nhanh sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch \u2264100 m \u2192 <strong>SR4 (\u0111a mode)<\/strong><\/p><\/li><li><p>Kho\u1ea3ng c\u00e1ch \u2265500 m \u2192 <strong>LR4 (\u0111\u01a1n mode)<\/strong><\/p><\/li><li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3:<\/p><ul><li><p>C\u00e1p MPO \u2192 SR4<\/p><\/li><li><p>S\u1ee3i quang LC \u2192 LR4<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP28 kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi m\u1ed9t lo\u1ea1i s\u1ee3i quang duy nh\u1ea5t<\/p><\/li><li><p>Thay v\u00e0o \u0111\u00f3, n\u00f3 l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng linh ho\u1ea1t h\u1ed7 tr\u1ee3 nhi\u1ec1u ti\u00eau chu\u1ea9n quang h\u1ecdc kh\u00e1c nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy\u1ebft \u0111\u1ecbnh th\u1ef1c s\u1ef1 l\u00e0: Kho\u1ea3ng c\u00e1ch ng\u1eafn + chi ph\u00ed th\u1ea5p h\u01a1n (SR4) so v\u1edbi kho\u1ea3ng c\u00e1ch d\u00e0i + t\u1ea7m ph\u1ee7 r\u1ed9ng h\u01a1n (LR4)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u m\u1ed9t v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf quan tr\u1ecdng: T\u1ea1i sao c\u00e1c m\u00f4-\u0111un QSFP28 tu\u00e2n th\u1ee7 MSA v\u1eabn th\u1ea5t b\u1ea1i trong tri\u1ec3n khai th\u1ef1c t\u1ebf?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 T\u1ea1i sao c\u00e1c m\u00f4-\u0111un QSFP28 tu\u00e2n th\u1ee7 MSA v\u1eabn th\u1ea5t b\u1ea1i?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c ghi nh\u00e3n l\u00e0 \u201ctu\u00e2n th\u1ee7 MSA\u201d, c\u00e1c m\u00f4-\u0111un QSFP28 kh\u00f4ng lu\u00f4n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong m\u1ea1ng th\u1ef1c t\u1ebf. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 g\u00e2y b\u1ef1c b\u1ed9i nh\u1ea5t\u2014v\u00e0 c\u0169ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm ki\u1ebfm nh\u1ea5t\u2014trong s\u1ed1 c\u00e1c k\u1ef9 s\u01b0 tri\u1ec3n khai li\u00ean k\u1ebft 100G.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd do c\u1ed1t l\u00f5i r\u1ea5t \u0111\u01a1n gi\u1ea3n: MSA x\u00e1c \u0111\u1ecbnh c\u00e1c ti\u00eau chu\u1ea9n ph\u1ea7n c\u1ee9ng, nh\u01b0ng hi\u1ec7u n\u0103ng trong th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 b\u1ed5 sung KH\u00d4NG \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a<strong>.<\/strong><\/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\/591f0528d82948bb8a3d85d3cb88aad9.jpg\" alt=\"Why MSA-Compliant QSFP28 Modules Still Fail?\" class=\"wp-image-2829\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/591f0528d82948bb8a3d85d3cb88aad9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/591f0528d82948bb8a3d85d3cb88aad9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/591f0528d82948bb8a3d85d3cb88aad9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/591f0528d82948bb8a3d85d3cb88aad9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/591f0528d82948bb8a3d85d3cb88aad9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Kh\u00f3a nh\u00e0 cung c\u1ea5p v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch EEPROM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng (\u0111\u1eb7c bi\u1ec7t l\u00e0 t\u1eeb c\u00e1c th\u01b0\u01a1ng hi\u1ec7u l\u1edbn) tri\u1ec3n khai c\u00e1c c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c \u0111\u1eb7c th\u00f9 c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec1u x\u1ea3y ra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ecdc d\u1eef li\u1ec7u EEPROM c\u1ee7a m\u00f4-\u0111un<\/p><\/li><li><p>N\u1ebfu ID nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n:<\/p><ul><li><p>\u274c C\u1ed5ng c\u00f3 th\u1ec3 b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li><li><p>\u274c C\u00e1c th\u00f4ng b\u00e1o c\u1ea3nh b\u00e1o xu\u1ea5t hi\u1ec7n<\/p><\/li><li><p>\u274c C\u00e1c t\u00ednh n\u0103ng c\u00f3 th\u1ec3 b\u1ecb gi\u1edbi h\u1ea1n<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf: <\/strong>Ngay c\u1ea3 khi m\u1ed9t m\u00f4-\u0111un v\u1ec1 m\u1eb7t v\u1eadt l\u00fd t\u01b0\u01a1ng th\u00edch: N\u00f3 v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng ch\u1ea5p nh\u1eadn<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 firmware v\u00e0 FEC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9c n\u0103ng s\u1eeda l\u1ed7i truy\u1ec1n d\u1eabn (FEC) r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft 100G \u2014 nh\u01b0ng n\u00f3 ch\u01b0a \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a \u0111\u1ea7y \u0111\u1ee7 gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng RS-FEC, thi\u1ebft b\u1ecb kh\u00e1c s\u1eed d\u1ee5ng FC-FEC<\/p><\/li><li><p>C\u00e1c thi\u1ebft l\u1eadp m\u1eb7c \u0111\u1ecbnh kh\u00e1c nhau gi\u1eefa c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c Li\u00ean k\u1ebft kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li><li><p>\u274c T\u1ef7 l\u1ec7 l\u1ed7i cao<\/p><\/li><li><p>\u274c Li\u00ean k\u1ebft ch\u1eadp ch\u1eddn ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra c\u00e1c t\u00ecnh hu\u1ed1ng \u201cl\u00fd thuy\u1ebft l\u00e0 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng, nh\u01b0ng th\u1ef1c t\u1ebf th\u00ec kh\u00f4ng\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c v\u1ea5n \u0111\u1ec1 \u1edf t\u1ea7ng quang h\u1ecdc (th\u01b0\u1eddng b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p nh\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi s\u1eed d\u1ee5ng \u0111\u00fang m\u00f4-\u0111un, c\u00e1c s\u1ef1 c\u1ed1 \u1edf t\u1ea7ng v\u1eadt l\u00fd v\u1eabn c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i MPO b\u1ea9n (r\u1ea5t ph\u1ed5 bi\u1ebfn)<\/p><\/li><li><p>Sai ph\u00e2n c\u1ef1c s\u1ee3i quang<\/p><\/li><li><p>Lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">MMF so v\u1edbi SMF<\/a>)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang qu\u00e1 cao (li\u00ean k\u1ebft ng\u1eafn v\u1edbi LR4)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi ti\u1ebft quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 s\u1eed d\u1ee5ng 4 k\u00eanh; n\u1ebfu m\u1ed9t k\u00eanh b\u1ecb l\u1ed7i, to\u00e0n b\u1ed9 li\u00ean k\u1ebft 100G s\u1ebd ng\u1eebng ho\u1ea1t \u0111\u1ed9ng<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">C\u00e1c m\u00f4-\u0111un b\u00ean th\u1ee9 ba<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un \u201ctu\u00e2n th\u1ee7 MSA\u201d \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t nh\u01b0 nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 quan s\u00e1t \u0111\u01b0\u1ee3c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ef7 l\u1ec7 h\u1ecfng cao h\u01a1n \u1edf c\u00e1c thi\u1ebft b\u1ecb quang chi ph\u00ed th\u1ea5p<\/p><\/li><li><p>Ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u<\/p><\/li><li><p>Thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t y\u1ebfu<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c M\u00f4-\u0111un h\u1ecfng s\u1edbm<\/p><\/li><li><p>\u274c Hi\u1ec7u n\u0103ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh khi t\u1ea3i cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 nhi\u1ec7t v\u00e0 c\u00f4ng su\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un QSFP28 ti\u00eau th\u1ee5 nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n c\u00e1c thi\u1ebft b\u1ecb quang t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c r\u1ee7i ro:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Qu\u00e1 nhi\u1ec7t tr\u00ean c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>L\u01b0u l\u01b0\u1ee3ng kh\u00ed kh\u00f4ng \u0111\u1ee7<\/p><\/li><li><p>S\u1ef1 c\u1ed1 do nhi\u1ec7t \u0111\u1ed9 g\u00e2y ra<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un \u0111\u1ed3ng<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/direct-attach-cables-dac-in-networking\/\">SFF-8472<\/a>)<\/p><\/li><li><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482686.htm\">C\u00e1c b\u1ed9 thu ph\u00e1t SFP RJ45<\/a><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u1ea5u h\u00ecnh sai v\u00e0 l\u1ed7i chia nh\u00e1nh (breakout)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP28 h\u1ed7 tr\u1ee3 c\u00e1c ch\u1ebf \u0111\u1ed9 chia nh\u00e1nh \u2014 nh\u01b0ng y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ebf \u0111\u1ed9 c\u1ed5ng sai (100G so v\u1edbi 4\u00d725G)<\/p><\/li><li><p>C\u00e1c c\u00e1p chia nh\u00e1nh kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>Sai l\u1ec7ch c\u1ea5u h\u00ecnh ph\u00eda b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c Kh\u00f4ng c\u00f3 li\u00ean k\u1ebft<\/p><\/li><li><p>\u274c T\u1ed1c \u0111\u1ed9 gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5: Chu\u1ea9n h\u00f3a so v\u1edbi th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>L\u1edbp<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>MSA bao ph\u1ee7<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>R\u1ee7i ro h\u1ecfng th\u1ef1c t\u1ebf<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>S\u1ef1 v\u1eeba kh\u00edt v\u1ec1 m\u1eb7t v\u1eadt l\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 C\u00f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hi\u1ebfm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Giao di\u1ec7n \u0111i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 C\u00f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>H\u00e0nh vi firmware<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c Kh\u00f4ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec1u ki\u1ec7n quang h\u1ecdc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c Kh\u00f4ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>R\u1ea5t cao<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>T\u00ednh t\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c Kh\u00f4ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quan tr\u1ecdng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1ch gi\u1ea3m r\u1ee7i ro h\u1ecfng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean kinh nghi\u1ec7m tri\u1ec3n khai th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Tr\u01b0\u1edbc khi tri\u1ec3n khai:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh danh s\u00e1ch t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch<\/p><\/li><li><p>\u0110\u1ed3ng b\u1ed9 c\u00e0i \u0111\u1eb7t FEC<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u n\u1ed1i s\u1ee3i quang (\u0111\u1eb7c bi\u1ec7t l\u00e0 MPO)<\/p><\/li><li><p>X\u00e1c minh lo\u1ea1i s\u1ee3i quang v\u00e0 c\u1ef1c t\u00ednh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 Trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra m\u1ee9c c\u00f4ng su\u1ea5t quang<\/p><\/li><li><p>Gi\u00e1m s\u00e1t b\u1ed9 \u0111\u1ebfm l\u1ed7i v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1ef1 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA \u0111\u1ea3m b\u1ea3o \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u00e0nh c\u00f4ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 xu\u1ea5t ph\u00e1t t\u1eeb:<\/p><ul><li><p>Kho\u1ea3ng c\u00e1ch t\u01b0\u01a1ng th\u00edch<\/p><\/li><li><p>V\u1ea5n \u0111\u1ec1 \u1edf t\u1ea7ng v\u1eadt l\u00fd<\/p><\/li><li><p>S\u1ef1 thi\u1ebfu nh\u1ea5t qu\u00e1n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea1t hi\u1ec7u n\u0103ng 100G \u0111\u00e1ng tin c\u1eady, b\u1ea1n ph\u1ea3i v\u01b0\u1ee3t xa ti\u00eau chu\u1ea9n v\u00e0 t\u1eadp trung v\u00e0o <strong>x\u00e1c th\u1ef1c \u0111\u1ea7u cu\u1ed1i<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y chuy\u1ec3n t\u1eeb v\u1ea5n \u0111\u1ec1 sang gi\u1ea3i ph\u00e1p: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a QSFP28 v\u00e0 tr\u00e1nh nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y trong tri\u1ec3n khai th\u1ef1c t\u1ebf?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 C\u00e1ch \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch QSFP28 trong tri\u1ec3n khai th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi hi\u1ec3u r\u00f5 l\u00fd do v\u00ec sao c\u00e1c module QSFP28 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA v\u1eabn c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 x\u00e2y d\u1ef1ng quy tr\u00ecnh tri\u1ec3n khai \u0111\u00e1ng tin c\u1eady. Trong m\u1ea1ng th\u1ef1c t\u1ebf, th\u00e0nh c\u00f4ng \u0111\u1ebfn t\u1eeb vi\u1ec7c x\u00e1c th\u1ef1c h\u1ec7 th\u1ed1ng \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb nh\u1eefng gi\u1ea3 \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c ti\u1ec5n, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng tr\u00ean th\u1ef1c \u0111\u1ecba v\u00e0 \u0111\u01b0\u1ee3c c\u00e1c k\u1ef9 s\u01b0 \u00e1p d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/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\/49fb32be119e435d8449bed5dadf9ce9.jpg\" alt=\"Ensure QSFP28 Compatibility in Real Deployments\" class=\"wp-image-2830\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/49fb32be119e435d8449bed5dadf9ce9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/49fb32be119e435d8449bed5dadf9ce9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/49fb32be119e435d8449bed5dadf9ce9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/49fb32be119e435d8449bed5dadf9ce9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/49fb32be119e435d8449bed5dadf9ce9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Quy tr\u00ecnh x\u00e1c th\u1ef1c t\u1eebng b\u01b0\u1edbc<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" >\u2705 X\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 firmware<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eaft \u0111\u1ea7u t\u1eeb l\u1edbp quan tr\u1ecdng nh\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra danh s\u00e1ch t\u01b0\u01a1ng th\u00edch ph\u1ea7n c\u1ee9ng c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch (HCL)<\/p><\/li><li><p>X\u00e1c minh:<\/p><ul><li><p>C\u00e1c lo\u1ea1i module QSFP28 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (SR4, LR4, v.v.)<\/p><\/li><li><p>Y\u00eau c\u1ea7u v\u1ec1 phi\u00ean b\u1ea3n firmware \/ h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/p><\/li><\/ul><\/li><li><p>X\u00e1c \u0111\u1ecbnh:<\/p><ul><li><p>H\u1ea1n ch\u1ebf kh\u00f3a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>M\u00e3 h\u00f3a EEPROM b\u1eaft bu\u1ed9c<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eb9o chuy\u00ean gia:<\/strong> Ngay c\u1ea3 tr\u00ean c\u00f9ng m\u1ed9t m\u1eabu b\u1ed9 chuy\u1ec3n m\u1ea1ch, c\u00e1c phi\u00ean b\u1ea3n firmware kh\u00e1c nhau c\u00f3 th\u1ec3 thay \u0111\u1ed5i h\u00e0nh vi t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\ud83d\udd0c Ph\u00f9 h\u1ee3p lo\u1ea1i quang h\u1ecdc v\u1edbi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o s\u1ef1 ph\u00f9 h\u1ee3p gi\u1eefa module v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch:<\/p><ul><li><p>\u2264100 m \u2192 SR4 (s\u1ee3i quang \u0111a mode)<\/p><\/li><li><p>\u2265500 m \u2192 LR4 (s\u1ee3i quang \u0111\u01a1n mode)<\/p><\/li><\/ul><\/li><li><p>\u0110\u1ea7u n\u1ed1i:<\/p><ul><li><p>MPO (SR4) so v\u1edbi LC (LR4)<\/p><\/li><\/ul><\/li><li><p>Lo\u1ea1i s\u1ee3i quang:<\/p><ul><li><p>OM3\/OM4 so v\u1edbi OS2<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng sai module quang h\u1ecdc l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y l\u1ed7i li\u00ean k\u1ebft.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\u2699\ufe0f \u0110\u1ed3ng b\u1ed9 h\u00f3a FEC v\u00e0 c\u1ea5u h\u00ecnh c\u1ed5ng<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea5u h\u00ecnh c\u1ea3 hai \u0111\u1ea7u c\u1ee7a li\u00ean k\u1ebft:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed3ng b\u1ed9 ch\u1ebf \u0111\u1ed9 FEC:<\/p><ul><li><p>RS-FEC so v\u1edbi FC-FEC<\/p><\/li><\/ul><\/li><li><p>Thi\u1ebft l\u1eadp \u0111\u00fang ch\u1ebf \u0111\u1ed9 c\u1ed5ng:<\/p><ul><li><p>100G so v\u1edbi ph\u00e2n nh\u00e1nh (4\u00d725G)<\/p><\/li><\/ul><\/li><li><p>\u0110\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft l\u1eadp t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng (auto-negotiation) nh\u1ea5t qu\u00e1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c kh\u00f4ng \u0111\u1ed3ng b\u1ed9 FEC l\u00e0 m\u1ed9t \u0111i\u1ec3m l\u1ed7i ti\u1ec1m \u1ea9n nh\u01b0ng r\u1ea5t nghi\u00eam tr\u1ecdng.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\ud83e\uddfc Ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch t\u1ea7ng quang h\u1ecdc<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng bao gi\u1edd b\u1ecf qua vi\u1ec7c ki\u1ec3m tra v\u1eadt l\u00fd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u n\u1ed1i (\u0111\u1eb7c bi\u1ec7t l\u00e0 MPO)<\/p><\/li><li><p>Ki\u1ec3m tra:<\/p><ul><li><p>C\u1ef1c t\u00ednh s\u1ee3i quang<\/p><\/li><li><p>\u0110\u1ed9 nguy\u00ean v\u1eb9n c\u1ee7a c\u00e1p<\/p><\/li><\/ul><\/li><li><p>S\u1eed d\u1ee5ng:<\/p><ul><li><p>K\u00ednh hi\u1ec3n vi ki\u1ec3m tra s\u1ee3i quang<\/p><\/li><li><p>B\u1ed9 d\u1ee5ng c\u1ee5 l\u00e0m s\u1ea1ch<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t k\u00eanh b\u1ecb b\u1ea9n duy nh\u1ea5t c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n to\u00e0n b\u1ed9 li\u00ean k\u1ebft 100G.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\ud83e\uddea Th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u01b0\u1edbc khi tri\u1ec3n khai<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o ho\u1ea1t \u0111\u1ed9ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o:<\/p><ul><li><p>C\u00f4ng su\u1ea5t quang TX\/RX<br><\/p><\/li><li><p>T\u1ed5n hao li\u00ean k\u1ebft (dB)<br><\/p><\/li><\/ul><\/li><li><p>Gi\u00e1m s\u00e1t:<\/p><ul><li><p>B\u1ed9 \u0111\u1ebfm l\u1ed7i<\/p><\/li><li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh t\u00edn hi\u1ec7u<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro s\u1ea3n xu\u1ea5t.<br>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Danh s\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch QSFP28<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra n\u00e0y tr\u01b0\u1edbc khi tri\u1ec3n khai:<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u1ea7n c\u1ee9ng &amp; Quang h\u1ecdc<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 Lo\u1ea1i m\u00f4-\u0111un QSFP28 ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch v\u00e0 s\u1ee3i quang<br><\/p><\/li><li><p>\u2714 Lo\u1ea1i \u0111\u1ea7u n\u1ed1i (MPO\/LC) ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng c\u00e1p<br><\/p><\/li><li><p>\u2714 M\u00f4-\u0111un \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a cho b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ee5c ti\u00eau (n\u1ebfu c\u1ea7n)<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1ed9 chuy\u1ec3n m\u1ea1ch &amp; C\u1ea5u h\u00ecnh<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 Firmware b\u1ed9 chuy\u1ec3n m\u1ea1ch h\u1ed7 tr\u1ee3 m\u00f4-\u0111un<br><\/p><\/li><li><p>\u2714 Thi\u1ebft l\u1eadp FEC kh\u1edbp \u1edf c\u1ea3 hai \u0111\u1ea7u<br><\/p><\/li><li><p>\u2714 Ch\u1ebf \u0111\u1ed9 c\u1ed5ng \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u1edbp V\u1eadt L\u00fd (Physical Layer)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 Lo\u1ea1i s\u1ee3i quang (MMF\/SMF) l\u00e0 ch\u00ednh x\u00e1c<br><\/p><\/li><li><p>\u2714 C\u00e1c \u0111\u1ea7u n\u1ed1i s\u1ea1ch v\u00e0 kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i<br><\/p><\/li><li><p>\u2714 \u0110\u00e3 x\u00e1c minh c\u1ef1c t\u00ednh<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra &amp; X\u00e1c th\u1ef1c<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 C\u00f4ng su\u1ea5t quang n\u1eb1m trong ph\u1ea1m vi an to\u00e0n<br><\/p><\/li><li><p>\u2714 Kh\u00f4ng c\u00f3 l\u1ed7i CRC ho\u1eb7c l\u1ed7i bit<br><\/p><\/li><li><p>\u2714 Li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi t\u1ea3i<br><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Chi\u1ebfn l\u01b0\u1ee3c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p (Y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh)<br><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ch\u1ecdn nh\u00e0 cung c\u1ea5p ph\u00f9 h\u1ee3p quan tr\u1ecdng ngang b\u1eb1ng v\u1edbi vi\u1ec7c x\u00e1c th\u1ef1c k\u1ef9 thu\u1eadt.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u01afu ti\u00ean h\u1ed7 tr\u1ee3 t\u00ednh t\u01b0\u01a1ng th\u00edch<br><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u00ecm c\u00e1c nh\u00e0 cung c\u1ea5p cung c\u1ea5p:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a s\u1eb5n cho c\u00e1c th\u01b0\u01a1ng hi\u1ec7u c\u1ee5 th\u1ec3<br><\/p><\/li><li><p>Cam k\u1ebft v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/p><\/li><li><p>T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un gi\u00e1 c\u1ef1c th\u1ea5p c\u00f3 th\u1ec3:<br><\/p><ul><li><p>C\u00f3 t\u1ef7 l\u1ec7 h\u1ecfng cao h\u01a1n<br><\/p><\/li><li><p>Thi\u1ebfu quy tr\u00ecnh ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7<br><\/p><\/li><\/ul><\/li><li><p>C\u00e1c m\u00f4-\u0111un cao c\u1ea5p:<br><\/p><ul><li><p>\u0110em l\u1ea1i \u0111\u1ed9 nh\u1ea5t qu\u00e1n t\u1ed1t h\u01a1n<br><\/p><\/li><li><p>Gi\u1ea3m r\u1ee7i ro d\u00e0i h\u1ea1n<br><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng \u00e1n r\u1ebb nh\u1ea5t th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn chi ph\u00ed v\u1eadn h\u00e0nh cao h\u01a1n<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u00e1nh gi\u00e1 quy tr\u00ecnh ki\u1ec3m tra &amp; ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<br><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady n\u00ean cung c\u1ea5p:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra \u201cburn-in\u201d<br><\/p><\/li><li><p>X\u00e1c th\u1ef1c hi\u1ec7u n\u0103ng quang h\u1ecdc<br><\/p><\/li><li><p>B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt r\u00f5 r\u00e0ng<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 &amp; quy tr\u00ecnh RMA<br><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean ph\u1ea3n h\u1ed3i th\u1ef1c t\u1ebf:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c thay th\u1ebf nhanh quan tr\u1ecdng h\u01a1n gi\u00e1 c\u1ea3<br><\/p><\/li><li><p>D\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 RMA k\u00e9m c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm ti\u1ebfn \u0111\u1ed9 d\u1ef1 \u00e1n \u0111\u00e1ng k\u1ec3<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t: Tr\u00e1nh r\u1ee7i ro t\u1eeb m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t<br><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t nh\u00e0 cung c\u1ea5p:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c th\u1ef1c 2\u20133 nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady<br><\/p><\/li><li><p>Chu\u1ea9n h\u00f3a quy tr\u00ecnh ki\u1ec3m tra<br><\/p><\/li><li><p>D\u1ef1 tr\u1eef h\u00e0ng d\u1ef1 ph\u00f2ng cho c\u00e1c li\u00ean k\u1ebft quan tr\u1ecdng<br><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o<br> <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473134.htm\">QSFP28<br><\/a> T\u00ednh t\u01b0\u01a1ng th\u00edch trong tri\u1ec3n khai th\u1ef1c t\u1ebf:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1eebng ch\u1ec9 d\u1ef1a v\u00e0o tu\u00e2n th\u1ee7 chu\u1ea9n MSA<br><\/p><\/li><li><p>Tu\u00e2n theo quy tr\u00ecnh x\u00e1c th\u1ef1c c\u00f3 c\u1ea5u tr\u00fac<br><\/p><\/li><li><p>K\u1ebft h\u1ee3p:<\/p><ul><li><p>S\u1ef1 \u0111\u1ed3ng b\u1ed9 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt<br><\/p><\/li><li><p>Ki\u1ec3m tra v\u1eadt l\u00fd<br><\/p><\/li><li><p>\u0110\u1ed9 tin c\u1eady c\u1ee7a nh\u00e0 cung c\u1ea5p<br><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai th\u00e0nh c\u00f4ng 100G kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ecdn \u0111\u00fang m\u00f4-\u0111un\u2014<br><br\/>m\u00e0 c\u00f2n l\u00e0 x\u00e1c th\u1ef1c to\u00e0n b\u1ed9 m\u00f4i tr\u01b0\u1eddng li\u00ean k\u1ebft \u0111\u1ea7u cu\u1ed1i<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, h\u00e3y t\u1ed5ng h\u1ee3p m\u1ecdi th\u1ee9 d\u01b0\u1edbi g\u00f3c nh\u00ecn mua s\u1eafm th\u1ef1c ti\u1ec5n: C\u00e1ch ch\u1ecdn c\u00e1c m\u00f4-\u0111un QSFP28 \u0111\u00e1ng tin c\u1eady (h\u01b0\u1edbng d\u1eabn ra quy\u1ebft \u0111\u1ecbnh + danh s\u00e1ch ki\u1ec3m tra)<strong>.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c module QSFP28 \u0111\u00e1ng tin c\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai th\u00e0nh c\u00f4ng m\u1ea1ng 100G b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">M\u00f4-\u0111un QSFP28<\/a>. Ngay c\u1ea3 trong n\u0103m 2026, c\u00e1c k\u1ef9 s\u01b0 v\u1eabn g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 do quang h\u1ecdc ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p ho\u1eb7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch. Tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ea3m b\u1ea3o c\u1ea3 hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady 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\/0facd170f530413abe9b7c873b30df55.jpg\" alt=\"Choosing Reliable QSFP28 Modules Practices\" class=\"wp-image-2831\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0facd170f530413abe9b7c873b30df55.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0facd170f530413abe9b7c873b30df55-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0facd170f530413abe9b7c873b30df55-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0facd170f530413abe9b7c873b30df55-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0facd170f530413abe9b7c873b30df55-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\ud83d\udd39 1. S\u1eed d\u1ee5ng khung mua s\u1eafm c\u00f3 c\u1ea5u tr\u00fac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn module QSFP28, h\u00e3y \u0111\u00e1nh gi\u00e1 c\u00e1c l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean ba y\u1ebfu t\u1ed1 then ch\u1ed1t:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A. Hi\u1ec7u n\u0103ng so v\u1edbi chi ph\u00ed<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Module hi\u1ec7u n\u0103ng cao<\/strong>:<\/p><ul><li><p>Th\u01b0\u1eddng \u0111\u1eaft h\u01a1n<\/p><\/li><li><p>Cung c\u1ea5p t\u1ef7 l\u1ec7 l\u1ed7i th\u1ea5p h\u01a1n, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t h\u01a1n v\u00e0 h\u1ed7 tr\u1ee3 t\u1eeb nh\u00e0 cung c\u1ea5p m\u1ea1nh m\u1ebd h\u01a1n<\/p><\/li><\/ul><\/li><li><p><strong>Module gi\u00e1 r\u1ebb<\/strong>:<\/p><ul><li><p>Chi ph\u00ed ban \u0111\u1ea7u th\u1ea5p h\u01a1n<\/p><\/li><li><p>R\u1ee7i ro cao h\u01a1n v\u1ec1 s\u1ef1 b\u1ea5t \u1ed5n c\u1ee7a li\u00ean k\u1ebft, v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch ho\u1eb7c h\u1ecfng s\u1edbm<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc chung: <\/strong>H\u00e3y c\u00e2n nh\u1eafc chi ph\u00ed tr\u00ean m\u1ed7i Gbps v\u00e0 \u0111\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n, ch\u1ee9 kh\u00f4ng ch\u1ec9 gi\u00e1 ban \u0111\u1ea7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B. Ki\u1ec3m tra &amp; Ch\u1ee9ng nh\u1eadn<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n \u01b0u ti\u00ean c\u00e1c module \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ch\u1ee9ng nh\u1eadn do nh\u00e0 cung c\u1ea5p b\u1ea3o l\u00e3nh<\/strong> cho c\u00e1c th\u01b0\u01a1ng hi\u1ec7u switch l\u1edbn<\/p><\/li><li><p><strong>X\u00e1c minh t\u00ednh tu\u00e2n th\u1ee7<\/strong> v\u1edbi ti\u00eau chu\u1ea9n MSA QSFP28 (SR4, LR4, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482370.htm\">CWDM4<\/a>)<\/p><\/li><li><p><strong>B\u00e1o c\u00e1o ki\u1ec3m tra tr\u01b0\u1edbc khi tri\u1ec3n khai<\/strong> v\u1ec1 c\u00f4ng su\u1ea5t quang, BER v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch FEC<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eb9o chuy\u00ean gia:<\/strong> C\u00e1c module \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf \u0111\u00e1ng tin c\u1eady h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c module quang h\u1ecdc chung \u201ct\u01b0\u01a1ng th\u00edch MSA\u201d ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C. Uy t\u00edn &amp; H\u1ed7 tr\u1ee3 c\u1ee7a nh\u00e0 cung c\u1ea5p<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady gi\u00fap gi\u1ea3m r\u1ee7i ro v\u1eadn h\u00e0nh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cung c\u1ea5p <strong>module \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a s\u1eb5n ho\u1eb7c t\u01b0\u01a1ng th\u00edch th\u01b0\u01a1ng hi\u1ec7u<\/strong><\/p><\/li><li><p>C\u00f3 <strong>quy tr\u00ecnh RMA nhanh v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<\/strong><\/p><\/li><li><p>Duy tr\u00ec <strong>ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra \u201cburn-in\u201d<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\ud83d\udd39 2. T\u00edch h\u1ee3p ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QA) v\u00e0 ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0o quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 sau khi \u0111\u00e3 ch\u1ecdn nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t:<\/p><ul><li><p>X\u00e1c minh c\u00f4ng su\u1ea5t quang TX\/RX<\/p><\/li><li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft d\u01b0\u1edbi t\u1ea3i<\/p><\/li><li><p>X\u00e1c th\u1ef1c FEC v\u00e0 ph\u00e2n nh\u00e1nh (breakout)<\/p><\/li><\/ul><\/li><li><p>Ki\u1ec3m tra t\u1ea5t c\u1ea3 k\u1ebft n\u1ed1i s\u1ee3i quang (MPO\/LC) v\u00e0 ki\u1ec3m tra c\u1ef1c t\u00ednh (polarity)<\/p><\/li><li><p>Theo d\u00f5i hi\u1ec7u n\u0103ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">DDM\/DOM<\/a> c\u00e1c ch\u1ec9 s\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o m\u1ea1ng 100G c\u1ee7a b\u1ea1n \u0111\u1ee7 v\u1eefng ch\u1eafc tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o tri\u1ec3n khai s\u1ea3n xu\u1ea5t.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >\ud83d\udd39 3. T\u00ecm ngu\u1ed3n cung c\u1ea5p module QSFP28 \u0111\u00e1ng tin c\u1eady<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 qu\u1ea3n l\u00fd CNTT \u0111ang t\u00ecm ki\u1ebfm <strong>c\u00e1c module QSFP28 ch\u1ea5t l\u01b0\u1ee3ng cao, tu\u00e2n th\u1ee7 MSA<\/strong> v\u1edbi \u0111\u1ed9 tin c\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u00e3y xem qua <\/strong><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<ul class=\"wp-block-list\">\n<li><p>To\u00e0n b\u1ed9 d\u00f2ng module QSFP28 SR4, LR4 v\u00e0 CWDM4<\/p><\/li><li><p>\u0110\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>C\u00f3 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt v\u00e0 b\u1ea3o h\u00e0nh \u0111i k\u00e8m<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Vi\u1ec7c mua t\u1eeb nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c tri\u1ec3n khai v\u00e0 gi\u1ea3m r\u1ee7i ro, cho ph\u00e9p c\u00e1c nh\u00f3m t\u1eadp trung v\u00e0o m\u1edf r\u1ed9ng m\u1ea1ng thay v\u00ec kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >\ud83d\udd39 4. Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110\u00e1nh gi\u00e1 c\u00e1c m\u00f4-\u0111un d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t, ki\u1ec3m th\u1eed v\u00e0 uy t\u00edn c\u1ee7a nh\u00e0 cung c\u1ea5p<\/strong><\/p><\/li><li><p><strong>\u0110\u1eebng ch\u1ec9 d\u1ef1a v\u00e0o vi\u1ec7c tu\u00e2n th\u1ee7 MSA<\/strong>\u2014vi\u1ec7c x\u00e1c minh trong th\u1ef1c t\u1ebf l\u00e0 r\u1ea5t quan tr\u1ecdng<\/p><\/li><li><p><strong>S\u1eed d\u1ee5ng khung mua h\u00e0ng c\u00f3 c\u1ea5u tr\u00fac<\/strong> \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady<\/p><\/li><li><p><strong>H\u1ee3p t\u00e1c v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady<\/strong> nh\u01b0 LINK-PP \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<div><div widgetid=\"3ef779ac451211f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"3ef779ac451211f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u ti\u00eau chu\u1ea9n QSFP28 MSA, gi\u1edbi h\u1ea1n t\u01b0\u01a1ng th\u00edch v\u00e0 r\u1ee7i ro th\u1ef1c t\u1ebf. H\u1ecdc c\u00e1ch ch\u1ecdn \u0111\u00fang quang h\u1ecdc 100G \u0111\u00e1ng tin c\u1eady v\u00e0 tr\u00e1nh th\u1ea5t b\u1ea1i trong tri\u1ec3n khai.<\/p>","protected":false},"author":1,"featured_media":2832,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[13],"class_list":["post-2833","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-100g-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2833","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=2833"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2833\/revisions"}],"predecessor-version":[{"id":10728,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2833\/revisions\/10728"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2832"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}