{"id":3275,"date":"2026-02-27T00:00:00","date_gmt":"2026-02-27T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/how-to-test-sfp-compatibility\/"},"modified":"2026-06-22T04:10:33","modified_gmt":"2026-06-22T04:10:33","slug":"how-to-test-sfp-compatibility","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility","title":{"rendered":"H\u01b0\u1edbng d\u1eabn t\u01b0\u01a1ng th\u00edch SFP: Ki\u1ec3m tra, m\u00e3 h\u00f3a v\u00e0 x\u00e1c minh"},"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\/fbf8fb7d434748ff9358c20f3af47d80.jpg\" alt=\"SFP Compatibility Guide: Testing, Coding, and Verification\" class=\"wp-image-3265\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fbf8fb7d434748ff9358c20f3af47d80.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fbf8fb7d434748ff9358c20f3af47d80-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fbf8fb7d434748ff9358c20f3af47d80-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fbf8fb7d434748ff9358c20f3af47d80-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fbf8fb7d434748ff9358c20f3af47d80-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9 thu ph\u00e1t nh\u1ecf g\u1ecdn c\u00f3 th\u1ec3 c\u1eafm th\u00e1o \u0111\u01b0\u1ee3c (SFP) x\u00e1c \u0111\u1ecbnh xem m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">b\u1ed9 thu ph\u00e1t quang<\/a> c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee5 th\u1ec3 m\u00e0 kh\u00f4ng b\u1ecb t\u1eeb ch\u1ed1i b\u1edfi ph\u1ea7n s\u1ee5n ho\u1eb7c g\u1eb7p ph\u1ea3i c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 hi\u1ec7u n\u0103ng. M\u1eb7c d\u00f9 c\u00e1c m\u00f4-\u0111un SFP tu\u00e2n theo c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n v\u00e0 quang ti\u00eau chu\u1ea9n, t\u00ednh t\u01b0\u01a1ng th\u00edch th\u01b0\u1eddng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c ch\u00ednh s\u00e1ch ph\u1ea7n s\u1ee5n c\u1ee7a nh\u00e0 cung c\u1ea5p, c\u00e1c tr\u01b0\u1eddng nh\u1eadn d\u1ea1ng trong EEPROM v\u00e0 c\u00e1ch tri\u1ec3n khai ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP ho\u1ea1t \u0111\u1ed9ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi k\u1ef9 s\u01b0 m\u1ea1ng, chuy\u00ean gia t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c \u0111\u1ed9i mua s\u1eafm. Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00f4-\u0111un sai c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7i \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d, s\u1ef1 b\u1ea5t \u1ed5n c\u1ee7a k\u1ebft n\u1ed1i ho\u1eb7c th\u1ea5t b\u1ea1i trong vi\u1ec7c gi\u00e1m s\u00e1t. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u00e1ch ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc v\u00e0 c\u00e1ch m\u00e3 h\u00f3a EEPROM \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>T\u00ednh t\u01b0\u01a1ng th\u00edch SFP l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch SFP \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">B\u1ed9 thu ph\u00e1t SFP<\/a> c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch trong m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee5 th\u1ec3 m\u00e0 kh\u00f4ng b\u1ecb t\u1eeb ch\u1ed1i b\u1edfi ph\u1ea7n s\u1ee5n, xung \u0111\u1ed9t ph\u1ea7n c\u1ee9ng ho\u1eb7c c\u00e1c gi\u1edbi h\u1ea1n ch\u1ee9c n\u0103ng. T\u00ednh t\u01b0\u01a1ng th\u00edch kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi y\u1ebfu t\u1ed1 h\u00ecnh d\u00e1ng; n\u00f3 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 t\u00edn hi\u1ec7u \u0111i\u1ec7n, h\u1ed7 tr\u1ee3 giao th\u1ee9c, logic x\u00e1c th\u1ef1c ph\u1ea7n s\u1ee5n v\u00e0 c\u00e1c tr\u01b0\u1eddng nh\u1eadn d\u1ea1ng trong EEPROM \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c m\u00f4-\u0111un SFP tu\u00e2n theo <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> (MSA) nh\u01b0ng hai m\u00f4-\u0111un c\u00f3 c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc gi\u1ed1ng nhau (v\u00ed d\u1ee5: 10GBASE-LR, 1310 nm, 10 km) v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau tr\u00ean c\u00f9ng m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn. \u0110i\u1ec1u n\u00e0y l\u00e0 do t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf nhi\u1ec1u l\u1edbp k\u1ef9 thu\u1eadt \u2014 kh\u00f4ng ch\u1ec9 \u1edf \u0111\u1ea7u n\u1ed1i v\u1eadt l\u00fd.<\/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\/09570f8be8b4487ebd42608dbcdd875d.jpg\" alt=\"What Is SFP Compatibility?\" class=\"wp-image-3266\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/09570f8be8b4487ebd42608dbcdd875d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/09570f8be8b4487ebd42608dbcdd875d-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/09570f8be8b4487ebd42608dbcdd875d-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/09570f8be8b4487ebd42608dbcdd875d-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/09570f8be8b4487ebd42608dbcdd875d-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ed1n chi\u1ec1u k\u00edch ch\u00ednh x\u00e1c \u0111\u1ecbnh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ed9 thu ph\u00e1t \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 t\u00edn hi\u1ec7u, \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">SFP<\/a> and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a> c\u00e1c m\u00f4-\u0111un ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 giao di\u1ec7n \u0111i\u1ec7n \u0111\u01b0\u1ee3c n\u00eau trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFF-8431 (giao di\u1ec7n \u0111i\u1ec7n SFP+ 10 Gb\/s)<\/p><\/li><li><p>SFF-8472 (ph\u1ea7n m\u1edf r\u1ed9ng giao di\u1ec7n gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (1G, 10G, 25G, v.v.)<\/p><\/li><li><p>M\u1ee9c t\u00edn hi\u1ec7u vi ph\u00e2n truy\u1ec1n (Tx) v\u00e0 nh\u1eadn (Rx)<\/p><\/li><li><p>\u0110\u1ed9 dung sai \u0111i\u1ec7n \u00e1p ngu\u1ed3n (th\u01b0\u1eddng l\u00e0 3,3 V)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 t\u1ed1i \u0111a c\u1ee7a m\u00f4-\u0111un<\/p><\/li><li><p>S\u1ef1 tu\u00e2n th\u1ee7 giao di\u1ec7n qu\u1ea3n l\u00fd I\u00b2C<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t m\u00f4-\u0111un v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 ho\u1eb7c kh\u00f4ng \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u y\u00eau c\u1ea7u, n\u00f3 c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i trong qu\u00e1 tr\u00ecnh kh\u1edfi t\u1ea1o ho\u1eb7c g\u00e2y ra s\u1ef1 b\u1ea5t \u1ed5n c\u1ee7a k\u1ebft n\u1ed1i \u2014 ngay c\u1ea3 khi c\u00e1c th\u00e0nh ph\u1ea7n quang h\u1ecdc l\u00e0 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n l\u00e0 y\u1ebfu t\u1ed1 ki\u1ec3m so\u00e1t \u0111\u1ea7u ti\u00ean tr\u01b0\u1edbc khi thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i quang x\u1ea3y ra.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch giao th\u1ee9c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch giao th\u1ee9c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c m\u00f4-\u0111un c\u00f3 h\u1ed7 tr\u1ee3 ti\u00eau chu\u1ea9n Ethernet ho\u1eb7c Fibre Channel m\u00e0 thi\u1ebft b\u1ecb ch\u1ee7 mong \u0111\u1ee3i hay kh\u00f4ng.<\/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>A <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478230.htm\">m\u00f4-\u0111un 1000BASE-SX<\/a> ph\u1ea3i tu\u00e2n th\u1ee7 IEEE 802.3z<\/p><\/li><li><p>A <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">m\u00f4-\u0111un 10GBASE-LR<\/a> ph\u1ea3i tu\u00e2n th\u1ee7 IEEE 802.3ae<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi hai m\u00f4-\u0111un c\u00f3 c\u00f9ng b\u01b0\u1edbc s\u00f3ng (v\u00ed d\u1ee5: 1310 nm), ch\u00fang c\u0169ng kh\u00f4ng th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau tr\u1eeb khi ch\u00fang h\u1ed7 tr\u1ee3 c\u00f9ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ebf, m\u00e3 h\u00f3a v\u00e0 t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong \u0111i\u1ec1u kho\u1ea3n IEEE t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch giao th\u1ee9c c\u00f2n bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u00e0nh vi t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng (n\u1ebfu \u00e1p d\u1ee5ng)<\/p><\/li><li><p>C\u00e1c k\u1ef3 v\u1ecdng v\u1ec1 s\u1eeda l\u1ed7i ti\u1ebfn (Forward Error Correction \u2013<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fec-forward-error-correction-in-optical-communication\/\">FEC<\/a>) (trong c\u00e1c m\u00f4-\u0111un t\u1ed1c \u0111\u1ed9 cao h\u01a1n)<\/p><\/li><li><p>Y\u00eau c\u1ea7u hu\u1ea5n luy\u1ec7n k\u1ebft n\u1ed1i (trong SFP28 tr\u1edf l\u00ean)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ef1 kh\u00f4ng kh\u1edbp v\u1ec1 giao th\u1ee9c th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn vi\u1ec7c kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, ngay c\u1ea3 khi b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng nh\u1eadn di\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eadn di\u1ec7n b\u1edfi ph\u1ea7n s\u1ee5n nh\u00e0 cung c\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng tri\u1ec3n khai c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o \u1edf c\u1ea5p \u0111\u1ed9 ph\u1ea7n s\u1ee5n. Trong qu\u00e1 tr\u00ecnh kh\u1edfi t\u1ea1o, thi\u1ebft b\u1ecb \u0111\u1ecdc d\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng qua giao di\u1ec7n I\u00b2C v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c b\u1ea3ng ph\u00ea duy\u1ec7t n\u1ed9i b\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu d\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng c\u1ee7a m\u00f4-\u0111un kh\u00f4ng kh\u1edbp v\u1edbi c\u00e1c ti\u00eau ch\u00ed d\u1ef1 ki\u1ebfn c\u1ee7a nh\u00e0 cung c\u1ea5p, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o \u201cB\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>V\u00f4 hi\u1ec7u h\u00f3a c\u1ed5ng (tr\u1ea1ng th\u00e1i err-disabled)<\/p><\/li><li><p>Ch\u1eb7n vi\u1ec7c gi\u00e1m s\u00e1t DOM<\/p><\/li><li><p>Ghi l\u1ea1i c\u00e1c l\u1ed7i li\u00ean quan \u0111\u1ebfn t\u00ednh tu\u00e2n th\u1ee7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 ch\u1ebf n\u00e0y \u0111\u00f4i khi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00f3a nh\u00e0 cung c\u1ea5p ho\u1eb7c th\u1ef1c thi x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t. N\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3n \u00e1nh s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 ph\u1ea7n c\u1ee9ng; thay v\u00e0o \u0111\u00f3, n\u00f3 ph\u1ea3n \u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh ch\u00ednh s\u00e1ch ph\u1ea7n s\u1ee5n do nh\u00e0 cung c\u1ea5p h\u1ec7 th\u1ed1ng \u0111\u01b0a ra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt, vi\u1ec7c nh\u1eadn di\u1ec7n b\u1edfi nh\u00e0 cung c\u1ea5p x\u1ea3y ra tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp l\u01b0u l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9c l\u1eadp v\u1edbi hi\u1ec7u n\u0103ng quang h\u1ecdc. M\u1ed9t m\u00f4-\u0111un c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 m\u1eb7t \u0111i\u1ec7n v\u00e0 quang nh\u01b0ng v\u1eabn b\u1ecb t\u1eeb ch\u1ed1i do ch\u00ednh s\u00e1ch ph\u1ea7n s\u1ee5n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eadn d\u1ea1ng EEPROM v\u00e0 b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">All <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> ch\u1ee9a m\u1ed9t thi\u1ebft b\u1ecb b\u1ed9 nh\u1edb EEPROM c\u00f3 th\u1ec3 truy c\u1eadp qua giao di\u1ec7n n\u1ed1i ti\u1ebfp hai d\u00e2y (I\u00b2C). C\u1ea5u tr\u00fac b\u1ed9 nh\u1edb \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a theo SFP MSA v\u00e0 m\u1edf r\u1ed9ng b\u1edfi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Long-distance fiber links<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c tr\u01b0\u1eddng EEPROM quan tr\u1ecdng bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ean nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>OUI c\u1ee7a nh\u00e0 cung c\u1ea5p (Organizationally Unique Identifier)<\/p><\/li><li><p>S\u1ed1 ph\u1ee5 t\u00f9ng<\/p><\/li><li><p>S\u1ed1 s\u00ea-ri<\/p><\/li><li><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>B\u01b0\u1edbc s\u00f3ng<br><\/p><\/li><li><p>C\u00e1c c\u1edd kh\u1ea3 n\u0103ng ch\u1ea9n \u0111o\u00e1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Khi m\u1ed9t m\u00f4-\u0111un \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o, h\u1ec7 th\u1ed1ng ch\u1ee7 \u0111\u1ecdc c\u00e1c \u0111\u1ecba ch\u1ec9 b\u1ed9 nh\u1edb n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i m\u00f4-\u0111un<\/p><\/li><li><p>T\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>\u0110\u1eb7c t\u00ednh quang h\u1ecdc<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 c\u1ee7a ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu \u0111\u1ecbnh d\u1ea1ng d\u1eef li\u1ec7u EEPROM kh\u00f4ng h\u1ee3p l\u1ec7, gi\u00e1 tr\u1ecb ki\u1ec3m tra t\u1ed5ng (checksum) b\u1ecb l\u1ed7i ho\u1eb7c m\u00e3 \u0111\u1ecbnh danh nh\u00e0 cung c\u1ea5p kh\u00f4ng kh\u1edbp v\u1edbi k\u1ef3 v\u1ecdng c\u1ee7a ph\u1ea7n s\u1ee5n, m\u00f4-\u0111un c\u00f3 th\u1ec3 b\u1ecb t\u1eeb ch\u1ed1i \u2014 ngay c\u1ea3 khi ph\u1ea7n c\u1ee9ng c\u1ee7a n\u00f3 v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, nh\u1eadn d\u1ea1ng EEPROM \u0111\u00f3ng vai tr\u00f2 nh\u01b0 l\u1edbp danh t\u00ednh logic c\u1ee7a t\u00ednh t\u01b0\u01a1ng th\u00edch SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00ednh t\u01b0\u01a1ng th\u00edch so v\u1edbi kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u01b0\u01a1ng th\u00edch<\/strong> x\u00e1c \u0111\u1ecbnh li\u1ec7u h\u1ec7 th\u1ed1ng ch\u1ee7 c\u00f3 ch\u1ea5p nh\u1eadn v\u00e0 kh\u1edfi t\u1ea1o m\u00f4-\u0111un hay kh\u00f4ng.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/interoperability-in-networking-meaning-standards-connectivity\/\"><strong>T\u01b0\u01a1ng th\u00edch<\/strong><\/a> x\u00e1c \u0111\u1ecbnh li\u1ec7u hai m\u00f4-\u0111un \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp v\u00e0 duy tr\u00ec m\u1ed9t li\u00ean k\u1ebft quang \u1ed5n \u0111\u1ecbnh hay kh\u00f4ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00f4-\u0111un c\u00f3 th\u1ec3 t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch nh\u01b0ng l\u1ea1i th\u1ea5t b\u1ea1i v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c do ch\u00eanh l\u1ec7ch b\u01b0\u1edbc s\u00f3ng, ng\u00e2n s\u00e1ch li\u00ean k\u1ebft kh\u00f4ng \u0111\u1ee7 ho\u1eb7c s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n v\u1ec1 giao th\u1ee9c \u1edf ph\u00eda xa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai kh\u00eda c\u1ea1nh n\u00e0y \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch SFP l\u00e0 m\u1ed9t quy tr\u00ecnh x\u00e1c th\u1ef1c \u0111a l\u1edbp bao g\u1ed3m:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Tu\u00e2n th\u1ee7 \u0111i\u1ec7n v\u1ec1 m\u1eb7t \u0111\u1eb7c t\u1ea3 MSA<\/p><\/li><li><p>Tu\u00e2n th\u1ee7 giao th\u1ee9c theo ti\u00eau chu\u1ea9n IEEE Ethernet ho\u1eb7c Fibre Channel<\/p><\/li><li><p>Nh\u1eadn d\u1ea1ng nh\u00e0 cung c\u1ea5p \u1edf c\u1ea5p \u0111\u1ed9 firmware<\/p><\/li><li><p>C\u1ea5u tr\u00fac nh\u1eadn d\u1ea1ng EEPROM ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch bao tr\u00f9m c\u00e1c mi\u1ec1n v\u1eadt l\u00fd, logic v\u00e0 firmware, vi\u1ec7c x\u00e1c minh n\u00ean bao g\u1ed3m c\u1ea3 vi\u1ec7c xem x\u00e9t \u0111\u1eb7c t\u1ea3 v\u00e0 x\u00e1c th\u1ef1c th\u1ef1c t\u1ebf trong thi\u1ebft b\u1ecb \u0111\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u r\u00f5 c\u00e1c l\u1edbp n\u00e0y gi\u00fap gi\u1ea3m r\u1ee7i ro tri\u1ec3n khai, ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 ki\u1ec7n t\u1eeb ch\u1ed1i firmware v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>T\u1ea1i sao m\u1ed9t s\u1ed1 m\u00f4-\u0111un SFP l\u1ea1i kh\u00f4ng t\u01b0\u01a1ng th\u00edch?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi hai m\u00f4-\u0111un SFP c\u00f3 c\u00f9ng y\u1ebfu t\u1ed1 h\u00ecnh d\u1ea1ng v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u danh \u0111\u1ecbnh, ch\u00fang v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang trong c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb ch\u1ee7. Vi\u1ec7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch SFP hi\u1ebfm khi do c\u00e1c v\u1ea5n \u0111\u1ec1 c\u01a1 h\u1ecdc g\u00e2y ra; thay v\u00e0o \u0111\u00f3, nguy\u00ean nh\u00e2n th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb logic x\u00e1c th\u1ef1c firmware, s\u1ef1 kh\u00f4ng kh\u1edbp trong nh\u1eadn d\u1ea1ng EEPROM, r\u00e0ng bu\u1ed9c \u0111i\u1ec7n ho\u1eb7c s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n v\u1ec1 th\u00f4ng s\u1ed1 quang h\u1ecdc.<\/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\/d23831fa941d4ec2a877d1ee52ad1731.jpg\" alt=\"Why Are Some SFP Modules Not Compatible?\" class=\"wp-image-3267\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d23831fa941d4ec2a877d1ee52ad1731.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d23831fa941d4ec2a877d1ee52ad1731-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d23831fa941d4ec2a877d1ee52ad1731-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d23831fa941d4ec2a877d1ee52ad1731-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d23831fa941d4ec2a877d1ee52ad1731-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 n\u0103m l\u00fd do k\u1ef9 thu\u1eadt ch\u00ednh khi\u1ebfn m\u1ed9t m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 b\u1ecb t\u1eeb ch\u1ed1i ho\u1eb7c kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch trong m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/a>, or <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">card giao di\u1ec7n m\u1ea1ng m\u00e1y ch\u1ee7 (server NIC)<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong>1\ufe0f\u20e3 <\/strong>Vi\u1ec7c \u00e1p d\u1ee5ng kh\u00f3a nh\u00e0 cung c\u1ea5p th\u00f4ng qua firmware<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb m\u1ea1ng tri\u1ec3n khai c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t \u1edf c\u1ea5p \u0111\u1ed9 firmware. Khi m\u1ed9t m\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o, thi\u1ebft b\u1ecb ch\u1ee7 \u0111\u1ecdc d\u1eef li\u1ec7u EEPROM c\u1ee7a n\u00f3 qua giao di\u1ec7n I\u00b2C v\u00e0 so s\u00e1nh c\u00e1c tr\u01b0\u1eddng nh\u1eadn d\u1ea1ng c\u1ee5 th\u1ec3 theo nh\u00e0 cung c\u1ea5p v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00ea duy\u1ec7t n\u1ed9i b\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u00f4-\u0111un kh\u00f4ng kh\u1edbp v\u1edbi c\u00e1c \u0111\u1ecbnh danh \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o \u201cB\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>V\u00f4 hi\u1ec7u h\u00f3a giao di\u1ec7n (tr\u1ea1ng th\u00e1i err-disabled)<\/p><\/li><li><p>Ch\u1eb7n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/troubleshoot-optical-transceivers-digital-diagnostic-monitoring\/\">gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1<\/a> (DOM)<\/p><\/li><li><p>Ghi l\u1ea1i s\u1ef1 ki\u1ec7n tu\u00e2n th\u1ee7 ho\u1eb7c s\u1ef1 ki\u1ec7n b\u1ea3o m\u1eadt<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 ch\u1ebf n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00f3a nh\u00e0 cung c\u1ea5p (vendor lock-in). N\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3-ethernet-standard-explained\/\">ti\u00eau chu\u1ea9n Ethernet IEEE<\/a> nh\u01b0ng \u0111\u01b0\u1ee3c tri\u1ec3n khai \u1edf c\u1ea5p \u0111\u1ed9 firmware b\u1edfi t\u1eebng nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt, vi\u1ec7c \u00e1p d\u1ee5ng kh\u00f3a nh\u00e0 cung c\u1ea5p x\u1ea3y ra sau khi c\u1eafm v\u1eadt l\u00fd nh\u01b0ng tr\u01b0\u1edbc khi k\u00edch ho\u1ea1t c\u1ed5ng \u0111\u1ea7y \u0111\u1ee7. M\u1ed9t m\u00f4-\u0111un c\u00f3 th\u1ec3 tu\u00e2n th\u1ee7 v\u1ec1 m\u1eb7t \u0111i\u1ec7n v\u00e0 quang v\u1edbi \u0111i\u1ec1u kho\u1ea3n IEEE li\u00ean quan, th\u1ebf nh\u01b0ng v\u1eabn b\u1ecb t\u1eeb ch\u1ed1i do ch\u00ednh s\u00e1ch firmware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong>2\ufe0f\u20e3<\/strong> S\u1ef1 kh\u00f4ng kh\u1edbp v\u1ec1 ID nh\u00e0 cung c\u1ea5p EEPROM ho\u1eb7c b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ec1u bao g\u1ed3m m\u1ed9t thi\u1ebft b\u1ecb b\u1ed9 nh\u1edb EEPROM \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac theo Th\u1ecfa thu\u1eadn \u0110a Ngu\u1ed3n (MSA) d\u00e0nh ri\u00eang cho SFP. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t trong c\u00e1c t\u00ecnh hu\u1ed1ng sau x\u1ea3y ra, t\u00ednh t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00e1 tr\u1ecb t\u1ed5ng ki\u1ec3m (checksum) kh\u00f4ng h\u1ee3p l\u1ec7<\/p><\/li><li><p>B\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb b\u1ecb l\u1ed7i ho\u1eb7c kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7<\/p><\/li><li><p>\u0110\u1ecbnh d\u1ea1ng c\u00e1c tr\u01b0\u1eddng nh\u1eadn d\u1ea1ng kh\u00f4ng tu\u00e2n th\u1ee7<\/p><\/li><li><p>M\u00e3 OUI c\u1ee7a nh\u00e0 cung c\u1ea5p kh\u00f4ng \u0111\u01b0\u1ee3c firmware nh\u1eadn ra<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ph\u00e2n t\u00edch EEPROM trong giai \u0111o\u1ea1n kh\u1edfi t\u1ea1o, vi\u1ec7c m\u00e3 h\u00f3a b\u1ed9 nh\u1edb sai ho\u1eb7c kh\u00f4ng chu\u1ea9n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1eeb ch\u1ed1i ngay l\u1eadp t\u1ee9c \u2014 ngay c\u1ea3 khi ph\u1ea7n c\u1ee9ng quang v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, vi\u1ec7c x\u00e1c th\u1ef1c EEPROM l\u00e0 m\u1ed9t c\u1ed5ng ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch \u1edf m\u1ee9c logic, \u0111\u1ed9c l\u1eadp v\u1edbi hi\u1ec7u n\u0103ng quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong>3\ufe0f\u20e3<\/strong> C\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi m\u1ed9t m\u00f4-\u0111un \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng v\u1eadt l\u00fd, n\u00f3 v\u1eabn ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc m\u00e0 giao di\u1ec7n ch\u1ee7 k\u1ef3 v\u1ecdng.<\/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>M\u1ed9t m\u00f4-\u0111un 10GBASE-LR ph\u1ea3i tu\u00e2n th\u1ee7 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3ae-10-gigabit-ethernet\/\">IEEE 802.3ae<\/a><\/p><\/li><li><p>M\u1ed9t m\u00f4-\u0111un 1000BASE-SX ph\u1ea3i tu\u00e2n th\u1ee7 IEEE 802.3z<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u danh \u0111\u1ecbnh c\u1ee7a m\u00f4-\u0111un kh\u00e1c v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c c\u1ed5ng h\u1ed7 tr\u1ee3<\/p><\/li><li><p>\u0110\u1ecbnh d\u1ea1ng \u0111i\u1ec1u ch\u1ebf kh\u00f4ng kh\u1edbp (v\u00ed d\u1ee5: Ethernet so v\u1edbi Fibre Channel)<\/p><\/li><li><p>Ch\u1ebf \u0111\u1ed9 s\u1eeda l\u1ed7i ti\u1ebfn (FEC) y\u00eau c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch quang h\u1ecdc kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 ch\u1ec9 ri\u00eang b\u01b0\u1edbc s\u00f3ng quy\u1ebft \u0111\u1ecbnh t\u00ednh t\u01b0\u01a1ng th\u00edch. Tr\u00ean th\u1ef1c t\u1ebf, vi\u1ec7c tu\u00e2n th\u1ee7 to\u00e0n b\u1ed9 \u0111i\u1ec1u kho\u1ea3n IEEE \u2014 bao g\u1ed3m m\u00e3 h\u00f3a, dung sai nhi\u1ec5u (jitter), t\u1ef7 s\u1ed1 t\u1eaft m\u1edf (extinction ratio) v\u00e0 \u0111\u1ed9 nh\u1ea1y \u0111\u1ea7u thu \u2014 l\u00e0 b\u1eaft bu\u1ed9c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc n\u1eb1m ngo\u00e0i c\u1eeda s\u1ed5 \u0111\u1eb7c t\u1ea3 d\u1ef1 ki\u1ebfn, li\u00ean k\u1ebft c\u00f3 th\u1ec3 kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c ho\u1eb7c bi\u1ec3u hi\u1ec7n s\u1ef1 b\u1ea5t \u1ed5n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong>4\ufe0f\u20e3<\/strong> Gi\u1edbi h\u1ea1n ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i c\u1ed5ng SFP c\u00f3 gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t t\u1ed1i \u0111a \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n n\u00e0y c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c kh\u1edfi t\u1ea1o \u0111\u00fang c\u00e1ch ho\u1eb7c g\u00e2y ra c\u1ea3nh b\u00e1o nhi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c t\u1ea3 \u0111i\u1ec7n v\u00e0 c\u00f4ng su\u1ea5t cho c\u00e1c m\u00f4-\u0111un SFP+ \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFF-8431<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c l\u1edbp c\u00f4ng su\u1ea5t SFP \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1edbp 1: \u2264 1,0 W<\/p><\/li><li><p>L\u1edbp 2: \u2264 1,5 W<\/p><\/li><li><p>L\u1edbp 3: \u2264 2,0 W<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un t\u1ed1c \u0111\u1ed9 cao h\u01a1n ho\u1eb7c t\u1ea7m xa m\u1edf r\u1ed9ng (v\u00ed d\u1ee5: bi\u1ebfn th\u1ec3 ER ho\u1eb7c ZR) th\u01b0\u1eddng ti\u00eau th\u1ee5 nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n do \u0111\u1ea7u ra laser m\u1ea1nh h\u01a1n ho\u1eb7c m\u1ea1ch x\u1eed l\u00fd t\u00edn hi\u1ec7u b\u1ed5 sung.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t m\u00f4-\u0111un ti\u00eau th\u1ee5 d\u00f2ng \u0111i\u1ec7n v\u01b0\u1ee3t qu\u00e1 m\u1ee9c c\u1ed5ng ch\u1ee7 h\u1ed7 tr\u1ee3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un c\u00f3 th\u1ec3 kh\u00f4ng kh\u1edfi t\u1ea1o \u0111\u01b0\u1ee3c<\/p><\/li><li><p>C\u1ed5ng c\u00f3 th\u1ec3 t\u1ef1 ng\u1eaft \u0111\u1ec3 b\u1ea3o v\u1ec7<\/p><\/li><li><p>C\u1ea3nh b\u00e1o nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong ph\u1ea7n ch\u1ea9n \u0111o\u00e1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 c\u00f4ng su\u1ea5t \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao, n\u01a1i c\u00e1c gi\u1edbi h\u1ea1n nhi\u1ec7t v\u00e0 \u0111i\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong>5\ufe0f\u20e3<\/strong> S\u1ef1 kh\u00f4ng kh\u1edbp v\u1ec1 b\u01b0\u1edbc s\u00f3ng ho\u1eb7c kho\u1ea3ng c\u00e1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch quang h\u1ecdc c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 c\u0103n ch\u1ec9nh b\u01b0\u1edbc s\u00f3ng v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c thi\u1ebft k\u1ebf li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u00ed d\u1ee5 v\u1ec1 t\u00ecnh hu\u1ed1ng kh\u00f4ng kh\u1edbp:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t m\u00f4-\u0111un 1310 nm \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t m\u00f4-\u0111un \u0111a mode 850 nm<\/p><\/li><li><p>M\u1ed9t m\u00f4-\u0111un t\u1ea7m ng\u1eafn <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476059.htm\">(SR)<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1p s\u1ee3i quang \u0111\u01a1n mode d\u00e0i<\/p><\/li><li><p>M\u1ed9t m\u00f4-\u0111un t\u1ea7m xa m\u1edf r\u1ed9ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476852.htm\">(ER)<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u00e0 kh\u00f4ng c\u00f3 m\u1ee9c suy hao ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi hai m\u00f4-\u0111un chia s\u1ebb c\u00f9ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, ch\u00fang ph\u1ea3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng danh \u0111\u1ecbnh gi\u1ed1ng nhau<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 c\u00f9ng lo\u1ea1i s\u1ee3i quang (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">SMF so v\u1edbi MMF<\/a>)<\/p><\/li><li><p>Cung c\u1ea5p c\u00f4ng su\u1ea5t ph\u00e1t v\u00e0 \u0111\u1ed9 nh\u1ea1y \u0111\u1ea7u thu t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 s\u1ed1 kho\u1ea3ng c\u00e1ch ri\u00eang l\u1ebb kh\u00f4ng x\u00e1c \u0111\u1ecbnh t\u00ednh t\u01b0\u01a1ng th\u00edch. Thay v\u00e0o \u0111\u00f3, k\u1ef9 s\u01b0 ph\u1ea3i x\u00e1c minh r\u1eb1ng t\u1ed5ng ng\u00e2n s\u00e1ch li\u00ean k\u1ebft \u0111\u00e1p \u1ee9ng:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tx(min) \u2212 T\u1ed5ng t\u1ed5n hao s\u1ee3i quang \u2265 Rx(\u0111\u1ed9 nh\u1ea1y)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00e1c y\u00eau c\u1ea7u v\u1ec1 b\u01b0\u1edbc s\u00f3ng ho\u1eb7c ng\u00e2n s\u00e1ch quang kh\u00f4ng ph\u00f9 h\u1ee3p, li\u00ean k\u1ebft c\u00f3 th\u1ec3 kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c ho\u1eb7c g\u1eb7p t\u1ef7 l\u1ec7 l\u1ed7i bit cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >G\u00f3c nh\u00ecn k\u1ef9 thu\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP th\u01b0\u1eddng do m\u1ed9t ho\u1eb7c nhi\u1ec1u l\u1edbp k\u1ef9 thu\u1eadt sau g\u00e2y ra:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Vi\u1ec7c \u00e1p d\u1ee5ng h\u1ea1n ch\u1ebf t\u1eeb ph\u1ea7n m\u1ec1m\u56fa\u4ef6 theo nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>S\u1ef1 kh\u00f4ng kh\u1edbp trong nh\u1eadn d\u1ea1ng EEPROM<\/p><\/li><li><p>S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n v\u1ec1 ti\u00eau chu\u1ea9n IEEE ho\u1eb7c giao th\u1ee9c<\/p><\/li><li><p>C\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 \u0111i\u1ec7n n\u0103ng<\/p><\/li><li><p>S\u1ef1 kh\u00f4ng kh\u1edbp v\u1ec1 b\u01b0\u1edbc s\u00f3ng quang ho\u1eb7c ng\u00e2n s\u00e1ch li\u00ean k\u1ebft<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch bao tr\u00f9m c\u1ea3 ba mi\u1ec1n: ph\u1ea7n m\u1ec1m\u56fa\u4ef6, \u0111i\u1ec7n v\u00e0 quang, vi\u1ec7c x\u00e1c th\u1ef1c n\u00ean bao g\u1ed3m c\u1ea3 vi\u1ec7c r\u00e0 so\u00e1t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 ki\u1ec3m tra th\u1ef1c t\u1ebf tr\u00ean n\u1ec1n t\u1ea3ng m\u1ee5c ti\u00eau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c c\u01a1 ch\u1ebf th\u1ea5t b\u1ea1i n\u00e0y gi\u00fap k\u1ef9 s\u01b0 ch\u1ea9n \u0111o\u00e1n s\u1ef1 ki\u1ec7n \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng thay v\u00ec ch\u1ec9 quy nguy\u00ean nh\u00e2n duy nh\u1ea5t cho s\u1ef1 kh\u00e1c bi\u1ec7t th\u01b0\u01a1ng hi\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>C\u00e1ch x\u00e1c \u0111\u1ecbnh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP (theo l\u1edbp k\u1ef9 thu\u1eadt)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c c\u01a1 ch\u1ebf \u0111i\u1ec7n, logic v\u00e0 ph\u1ea7n m\u1ec1m\u56fa\u4ef6 ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc khi li\u00ean k\u1ebft quang \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ea7y \u0111\u1ee7. K\u1ef9 s\u01b0 c\u1ea7n hi\u1ec3u c\u00e1ch thi\u1ebft b\u1ecb ch\u1ee7 giao ti\u1ebfp v\u1edbi b\u1ed9 thu ph\u00e1t, x\u00e1c minh nh\u1eadn d\u1ea1ng v\u00e0 \u0111\u00e1nh gi\u00e1 ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 nh\u1eb1m \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang. Qu\u00e1 tr\u00ecnh n\u00e0y ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn <strong>Giao di\u1ec7n I\u00b2C<\/strong>, LINK-PP LPJ4014CNL Industrial RJ45 Magjack <strong>B\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM<\/strong>, <strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/strong> d\u1eef li\u1ec7u v\u00e0 c\u00e1c tr\u01b0\u1eddng nh\u1eadn d\u1ea1ng nh\u00e0 cung c\u1ea5p nh\u01b0 M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t theo t\u1ed5 ch\u1ee9c (OUI).<\/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\/ec1c69e155694612a04e3c1963f6e9eb.jpg\" alt=\"How SFP Compatibility Is Determined\" class=\"wp-image-3268\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ec1c69e155694612a04e3c1963f6e9eb.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ec1c69e155694612a04e3c1963f6e9eb-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ec1c69e155694612a04e3c1963f6e9eb-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ec1c69e155694612a04e3c1963f6e9eb-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ec1c69e155694612a04e3c1963f6e9eb-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Giao ti\u1ebfp qua giao di\u1ec7n I\u00b2C<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ec1u t\u00edch h\u1ee3p giao di\u1ec7n n\u1ed1i ti\u1ebfp hai d\u00e2y (I\u00b2C) \u0111\u1ec3 giao ti\u1ebfp v\u1edbi h\u1ec7 th\u1ed1ng ch\u1ee7. Giao di\u1ec7n n\u00e0y \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a theo <strong>Th\u1ecfa thu\u1eadn ngu\u1ed3n \u0111a (MSA) cho SFP<\/strong> v\u00e0 m\u1edf r\u1ed9ng trong <strong>Long-distance fiber links<\/strong> d\u00e0nh cho Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a giao di\u1ec7n I\u00b2C bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ecdc v\u00e0 ghi b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM<\/p><\/li><li><p>Truy c\u1eadp d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p, c\u00f4ng su\u1ea5t quang)<\/p><\/li><li><p>X\u00e1c minh lo\u1ea1i m\u00f4-\u0111un v\u00e0 l\u1edbp ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc khi kh\u1edfi t\u1ea1o<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft b\u1ecb ch\u1ee7 d\u00f2 giao di\u1ec7n I\u00b2C ngay sau khi l\u1eafp m\u00f4-\u0111un. N\u1ebfu m\u00f4-\u0111un kh\u00f4ng ph\u1ea3n h\u1ed3i \u0111\u00fang c\u00e1ch ho\u1eb7c tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u kh\u00f4ng h\u1ee3p l\u1ec7, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 g\u1eafn c\u1edd n\u00f3 l\u00e0 kh\u00f4ng t\u01b0\u01a1ng th\u00edch, ng\u0103n ch\u1eb7n vi\u1ec7c chuy\u1ec3n ti\u1ebfp l\u01b0u l\u01b0\u1ee3ng ngay c\u1ea3 khi c\u00e1c th\u00f4ng s\u1ed1 v\u1eadt l\u00fd v\u00e0 quang h\u1ecdc \u0111\u1ec1u tu\u00e2n th\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 X\u00e1c th\u1ef1c b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">EEPROM ch\u1ee9a c\u00e1c tr\u01b0\u1eddng c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ecbnh ngh\u0129a danh t\u00ednh v\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u00f4-\u0111un. T\u1ed5 ch\u1ee9c c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi <strong>Long-distance fiber links<\/strong> v\u00e0 ti\u00eau chu\u1ea9n SFF-8431. C\u00e1c ph\u1ea7n b\u1ed9 nh\u1edb quan tr\u1ecdng bao g\u1ed3m:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ecba ch\u1ec9 b\u1ed9 nh\u1edb<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x00\u20130x0F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ed9 nh\u1eadn d\u1ea1ng &amp; B\u1ed9 nh\u1eadn d\u1ea1ng m\u1edf r\u1ed9ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i m\u00f4-\u0111un (v\u00ed d\u1ee5: SFP, SFP+)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x10\u20130x17<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u00ean nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u00ean nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x18\u20130x1F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>OUI c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t theo t\u1ed5 ch\u1ee9c (3 byte)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x20\u20130x35<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ed1 ph\u1ee5 t\u00f9ng c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ed1 hi\u1ec7u m\u00f4-\u0111un<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x36\u20130x3B<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Phi\u00ean b\u1ea3n c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Phi\u00ean b\u1ea3n ph\u1ea7n c\u1ee9ng ho\u1eb7c phi\u00ean b\u1ea3n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x3C\u20130x3F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ed1 s\u00ea-ri<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ed9 nh\u1eadn d\u1ea1ng m\u00f4-\u0111un duy nh\u1ea5t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x40\u20130x4F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e3 ng\u00e0y s\u1ea3n xu\u1ea5t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ng\u00e0y s\u1ea3n xu\u1ea5t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x50\u20130x5F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1edd ch\u1ea9n \u0111o\u00e1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DOM) v\u00e0 c\u00e1c t\u00ednh n\u0103ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0x60\u20130x7F<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ef1 tr\u1eef \/ Ri\u00eang cho nh\u00e0 cung c\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c tr\u01b0\u1eddng d\u1eef li\u1ec7u m\u1edf r\u1ed9ng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng ch\u1ee7 \u0111\u1ecdc c\u00e1c \u0111\u1ecba ch\u1ec9 n\u00e0y \u0111\u1ec3:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c nh\u1eadn lo\u1ea1i m\u00f4-\u0111un kh\u1edbp v\u1edbi giao di\u1ec7n d\u1ef1 ki\u1ebfn (v\u00ed d\u1ee5: 1G so v\u1edbi 10G)<\/p><\/li><li><p>X\u00e1c th\u1ef1c danh t\u00ednh nh\u00e0 s\u1ea3n xu\u1ea5t th\u00f4ng qua OUI<\/p><\/li><li><p>X\u00e1c \u0111\u1ecbnh phi\u00ean b\u1ea3n v\u00e0 s\u1ed1 ph\u1ee5 t\u00f9ng m\u00f4-\u0111un nh\u1eb1m x\u00e1c th\u1ef1c ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/p><\/li><li><p>Ki\u1ec3m tra h\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n n\u1ebfu y\u00eau c\u1ea7u gi\u00e1m s\u00e1t DOM<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu d\u1eef li\u1ec7u EEPROM kh\u00f4ng h\u1ee3p l\u1ec7 ho\u1eb7c ki\u1ec3m tra t\u1ed5ng ki\u1ec3m (checksum) th\u1ea5t b\u1ea1i, m\u00f4-\u0111un c\u00f3 th\u1ec3 b\u1ecb t\u1eeb ch\u1ed1i ngay c\u1ea3 khi c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc v\u00e0 \u0111i\u1ec7n \u0111\u1ec1u t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1<\/a> cung c\u1ea5p ph\u00e9p \u0111o th\u1eddi gian th\u1ef1c c\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh quan tr\u1ecdng nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t quang ph\u00e1t (Tx)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang nh\u1eadn (Rx)<\/p><\/li><li><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/li><li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li><li><p>D\u00f2ng ph\u00e2n c\u1ef1c laser<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1eef li\u1ec7u DOM \u0111\u01b0\u1ee3c l\u01b0u trong EEPROM v\u00e0 c\u00f3 th\u1ec3 truy c\u1eadp qua giao di\u1ec7n I\u00b2C. Khi thi\u1ebft b\u1ecb ch\u1ee7 truy v\u1ea5n c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, n\u00f3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u1ec7u m\u00f4-\u0111un c\u00f3 ho\u1ea1t \u0111\u1ed9ng trong ph\u1ea1m vi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt hay kh\u00f4ng<\/p><\/li><li><p>Li\u00ean k\u1ebft quang c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch d\u1ef1 ki\u1ebfn hay kh\u00f4ng<\/p><\/li><li><p>\u0110i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c \u0111i\u1ec7n \u00e1p c\u00f3 n\u1eb1m trong gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c hay kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c minh DOM c\u0169ng \u0111\u00f3ng vai tr\u00f2 trong x\u00e1c th\u1ef1c t\u00ednh t\u01b0\u01a1ng th\u00edch. M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 DOM cho gi\u00e1m s\u00e1t n\u00e2ng cao; c\u00e1c m\u00f4-\u0111un thi\u1ebfu t\u00ednh n\u0103ng n\u00e0y c\u00f3 th\u1ec3 b\u1ecb g\u1eafn c\u1edd l\u00e0 kh\u00f4ng t\u01b0\u01a1ng th\u00edch, ngay c\u1ea3 khi ch\u00fang \u0111\u00fang v\u1ec1 m\u1eb7t \u0111i\u1ec7n v\u00e0 quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Tr\u01b0\u1eddng OUI c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 nh\u1eadn d\u1ea1ng ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t theo t\u1ed5 ch\u1ee9c (OUI) trong EEPROM x\u00e1c \u0111\u1ecbnh nh\u00e0 s\u1ea3n xu\u1ea5t. Nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng s\u1eed d\u1ee5ng tr\u01b0\u1eddng n\u00e0y \u0111\u1ec3 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch t\u01b0\u01a1ng th\u00edch \u1edf c\u1ea5p ph\u1ea7n m\u1ec1m\u56fa\u4ef6:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un t\u1eeb nh\u00e0 cung c\u1ea5p kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn c\u00f3 th\u1ec3 b\u1ecb t\u1eeb ch\u1ed1i<\/p><\/li><li><p>C\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t g\u1ed1c (OEM) ph\u00ea duy\u1ec7t \u0111\u01b0\u1ee3c \u01b0u ti\u00ean chuy\u1ec3n ti\u1ebfp l\u01b0u l\u01b0\u1ee3ng<\/p><\/li><li><p>D\u1eef li\u1ec7u DOM c\u00f3 th\u1ec3 b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a n\u1ebfu OUI kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1edbp n\u00e0y \u0111\u1ed9c l\u1eadp v\u1edbi hi\u1ec7u n\u0103ng v\u1eadt l\u00fd ho\u1eb7c quang h\u1ecdc. Vi\u1ec7c nh\u1eadn d\u1ea1ng OUI ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 m\u00f4-\u0111un v\u01b0\u1ee3t qua c\u00e1c ki\u1ec3m tra x\u00e1c th\u1ef1c ph\u1ea7n m\u1ec1m\u56fa\u4ef6 tr\u01b0\u1edbc khi k\u00edch ho\u1ea1t li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP bao g\u1ed3m:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>X\u00e1c minh t\u00edn hi\u1ec7u \u0111i\u1ec7n<\/strong> theo ti\u00eau chu\u1ea9n SFF-8431<\/p><\/li><li><p><strong>X\u00e1c th\u1ef1c b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh danh t\u00ednh, phi\u00ean b\u1ea3n v\u00e0 ch\u1ea9n \u0111o\u00e1n m\u00f4-\u0111un<\/p><\/li><li><p><strong>Truy c\u1eadp d\u1eef li\u1ec7u DOM<\/strong> nh\u1eb1m x\u00e1c nh\u1eadn t\u00ednh to\u00e0n v\u1eb9n v\u1eadn h\u00e0nh v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc<\/p><\/li><li><p><strong>Nh\u1eadn d\u1ea1ng OUI c\u1ee7a nh\u00e0 cung c\u1ea5p<\/strong> \u0111\u1ec3 th\u1ef1c thi t\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u00e1c l\u1edbp k\u1ef9 thu\u1eadt n\u00e0y, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 ki\u1ec3m tra m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng xem b\u1ed9 thu ph\u00e1t c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 hay kh\u00f4ng v\u00e0 tr\u00e1nh c\u00e1c s\u1ef1 ki\u1ec7n \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d b\u1ea5t ng\u1edd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e0i li\u1ec7u tham kh\u1ea3o (Ti\u00eau chu\u1ea9n &amp; \u0110\u1eb7c t\u1ea3)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-8472-standard-explained-ddm-for-optical-transceivers\/\">Long-distance fiber links<\/a> \u2014 Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n s\u1ed1 cho b\u1ed9 thu ph\u00e1t quang<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sff-8431-sfp-plus-10g-electrical-specification\/\">SFF-8431<\/a> \u2014 \u0110\u1eb7c t\u1ea3 giao di\u1ec7n \u0111i\u1ec7n 10 Gb\/s SFP+<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sff-8432-standard-mechanical-design-of-sfp-modules\/\">SFF-8432<\/a> \u2014 \u0110\u1eb7c t\u1ea3 m\u00f4-\u0111un SFP (b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM)<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>C\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a SFP (t\u1eebng b\u01b0\u1edbc)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478231.htm\">m\u00f4-\u0111un SFP<\/a> ho\u00e0n to\u00e0n t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u00f2i h\u1ecfi m\u1ed9t quy tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac, \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 x\u00e1c minh. H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc sau \u0111\u00e2y k\u1ebft h\u1ee3p vi\u1ec7c r\u00e0 so\u00e1t \u0111\u1eb7c t\u1ea3, x\u00e1c minh firmware v\u00e0 ki\u1ec3m tra th\u1ef1c t\u1ebf nh\u1eb1m x\u00e1c nh\u1eadn c\u1ea3 kh\u1ea3 n\u0103ng nh\u1eadn d\u1ea1ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra c\u00e1c s\u1ef1 ki\u1ec7n \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d c\u0169ng nh\u01b0 m\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft trong c\u00e1c m\u1ea1ng s\u1ea3n xu\u1ea5t.<\/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\/dcbc3d8499c34a1fa6f2be4792d902b2.jpg\" alt=\"How to Test SFP Compatibility\" class=\"wp-image-3269\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dcbc3d8499c34a1fa6f2be4792d902b2.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dcbc3d8499c34a1fa6f2be4792d902b2-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dcbc3d8499c34a1fa6f2be4792d902b2-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dcbc3d8499c34a1fa6f2be4792d902b2-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dcbc3d8499c34a1fa6f2be4792d902b2-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 1 \u2014 Ki\u1ec3m tra danh s\u00e1ch t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi c\u1eafm module v\u00e0o th\u1ef1c t\u1ebf, h\u00e3y tham kh\u1ea3o danh s\u00e1ch <strong>c\u00e1c b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t v\u1ec1 m\u1eb7t t\u01b0\u01a1ng th\u00edch<\/strong>. c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7. H\u1ea7u h\u1ebft nh\u00e0 cung c\u1ea5p b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ec1u c\u00f4ng b\u1ed1 danh s\u00e1ch n\u00e0y trong t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt ho\u1eb7c ghi ch\u00fa ph\u00e1t h\u00e0nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng \u0111i\u1ec1u c\u1ea7n ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c d\u1ea1ng th\u1ee9c SFP \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (SFP, SFP+, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP<\/a>, v.v.)<\/p><\/li><li><p>C\u00e1c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (1G, 10G, 25G, 100G)<\/p><\/li><li><p>Y\u00eau c\u1ea7u phi\u00ean b\u1ea3n firmware<\/p><\/li><li><p>B\u1ea5t k\u1ef3 h\u1ea1n ch\u1ebf n\u00e0o \u0111\u1ed1i v\u1edbi c\u00e1c module c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br\/>C\u00e1c module kh\u00f4ng \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea r\u00f5 r\u00e0ng c\u00f3 th\u1ec3 b\u1ecb firmware t\u1eeb ch\u1ed1i, ngay c\u1ea3 khi c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n v\u00e0 quang c\u1ee7a ch\u00fang \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n. B\u01b0\u1edbc n\u00e0y lo\u1ea1i b\u1ecf c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch do kh\u00f3a ph\u1ea7n m\u1ec1m (vendor lock-in) \u1edf c\u1ea5p firmware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 2 \u2014 C\u1eafm module v\u00e0 ki\u1ec3m tra nh\u1eadt k\u00fd CLI<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1eafm v\u1eadt l\u00fd module SFP v\u00e0o c\u1ed5ng \u0111\u00edch. Ngay l\u1eadp t\u1ee9c theo d\u00f5i nh\u1eadt k\u00fd thi\u1ebft b\u1ecb b\u1eb1ng c\u00e1c l\u1ec7nh CLI \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o module \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c l\u1ec7nh CLI ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>show interface transceiver<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u1ea7n l\u01b0u \u00fd nh\u1eefng y\u1ebfu t\u1ed1 sau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n m\u00e0 kh\u00f4ng c\u00f3 l\u1ed7i<\/p><\/li><li><p>Kh\u00f4ng c\u00f3 c\u1ea3nh b\u00e1o \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>Lo\u1ea1i module, nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 s\u1ed1 s\u00ea-ri ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa k\u1ef9 thu\u1eadt:<\/strong><br\/><br\/>Vi\u1ec7c t\u1eeb ch\u1ed1i \u1edf c\u1ea5p firmware th\u01b0\u1eddng x\u1ea3y ra trong qu\u00e1 tr\u00ecnh kh\u1edfi t\u1ea1o. C\u00e1c m\u1ee5c nh\u1eadt k\u00fd cung c\u1ea5p d\u1ea5u hi\u1ec7u s\u1edbm v\u1ec1 c\u00e1c s\u1ef1 c\u1ed1 EEPROM, sai l\u1ec7ch OUI nh\u00e0 s\u1ea3n xu\u1ea5t ho\u1eb7c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 3 \u2014 X\u00e1c minh d\u1eef li\u1ec7u DOM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM) cho ph\u00e9p k\u1ef9 s\u01b0 x\u00e1c nh\u1eadn r\u1eb1ng module \u0111ang ho\u1ea1t \u0111\u1ed9ng trong gi\u1edbi h\u1ea1n th\u00f4ng s\u1ed1 \u0111i\u1ec7n v\u00e0 quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>\u0110\u1ecdc d\u1eef li\u1ec7u DOM qua giao di\u1ec7n I\u00b2C ho\u1eb7c c\u00e1c l\u1ec7nh CLI:<\/p><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\">\n<code>hi\u1ec3n th\u1ecb chi ti\u1ebft b\u1ed9 thu ph\u00e1t giao di\u1ec7n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\" >\n<li><p>X\u00e1c minh c\u00e1c ch\u1ec9 s\u1ed1 then ch\u1ed1t:<\/p><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi d\u1ef1 ki\u1ebfn<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t quang ph\u00e1t (Tx)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trong ph\u1ea1m vi \u0111\u1eb7c t\u1ea3 c\u1ee7a module (dBm)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t quang thu (Rx)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trong gi\u1edbi h\u1ea1n \u0111\u1ed9 nh\u1ea1y c\u1ee7a b\u1ed9 thu (dBm)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh (\u00b0C)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec7n \u00e1p c\u1ea5p ngu\u1ed3n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>3,135\u20133,465 V (th\u00f4ng th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi SFP+)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>D\u00f2ng thi\u00ean \u00e1p laser<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trong gi\u1edbi h\u1ea1n d\u00f2ng cho ph\u00e9p<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br\/><br\/>Ngay c\u1ea3 m\u1ed9t module \u0111\u00e3 \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng c\u0169ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh n\u1ebfu m\u1ee9c Tx\/Rx ho\u1eb7c gi\u00e1 tr\u1ecb ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n n\u1eb1m ngo\u00e0i ph\u1ea1m vi cho ph\u00e9p. Vi\u1ec7c x\u00e1c minh DOM \u0111\u1ea3m b\u1ea3o c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n v\u00e0 quang \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 4 \u2014 X\u00e1c nh\u1eadn thi\u1ebft l\u1eadp li\u00ean k\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi module \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng v\u00e0 d\u1eef li\u1ec7u DOM \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh, h\u00e3y x\u00e1c nh\u1eadn r\u1eb1ng li\u00ean k\u1ebft quang \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i module SFP v\u1edbi c\u1ed5ng t\u1eeb xa t\u01b0\u01a1ng \u1ee9ng<\/p><\/li><li><p>X\u00e1c minh tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft b\u1eb1ng l\u1ec7nh CLI:<\/p><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\">\n<code>show interface status<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra c\u00e1c m\u1ee5c sau:<\/p><ul><li><p>Tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft \u0111ang ho\u1ea1t \u0111\u1ed9ng<\/p><\/li><li><p>Kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft qu\u00e1 m\u1ee9c<\/p><\/li><li><p>Kh\u00f4ng c\u00f3 l\u1ed7i CRC ho\u1eb7c l\u1ed7i c\u0103n ch\u1ec9nh<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa k\u1ef9 thu\u1eadt:<\/strong><br\/><br\/>Vi\u1ec7c thi\u1ebft l\u1eadp li\u00ean k\u1ebft x\u00e1c nh\u1eadn c\u1ea3 <strong>kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111i\u1ec7n v\u00e0 quang<\/strong>. M\u1ed9t module c\u00f3 th\u1ec3 t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb ch\u1ee7 nh\u01b0ng l\u1ea1i th\u1ea5t b\u1ea1i trong kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c do kh\u00f4ng kh\u1edbp b\u01b0\u1edbc s\u00f3ng, kh\u00f4ng kh\u1edbp lo\u1ea1i c\u00e1p quang ho\u1eb7c kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc 5 \u2014 Th\u1ef1c hi\u1ec7n ki\u1ec3m tra l\u01b0u l\u01b0\u1ee3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed1i c\u00f9ng, x\u00e1c th\u1ef1c hi\u1ec7u n\u0103ng th\u1ef1c t\u1ebf b\u1eb1ng c\u00e1ch g\u1eedi l\u01b0u l\u01b0\u1ee3ng qua module.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng b\u1ed9 t\u1ea1o l\u01b0u l\u01b0\u1ee3ng ho\u1eb7c l\u01b0u l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t (v\u1edbi s\u1ef1 th\u1eadn tr\u1ecdng)<\/p><\/li><li><p>\u0110o:<\/p><ul><li><p>\u0110\u1ed9 nh\u1ea5t qu\u00e1n th\u00f4ng l\u01b0\u1ee3ng<\/p><\/li><li><p>M\u1ea5t g\u00f3i tin<\/p><\/li><li><p>B\u1ed9 \u0111\u1ebfm l\u1ed7i<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br\/><br\/>Ki\u1ec3m tra l\u01b0u l\u01b0\u1ee3ng l\u00e0 ph\u00e9p x\u00e1c minh cu\u1ed1i c\u00f9ng. Ngay c\u1ea3 nh\u1eefng module v\u01b0\u1ee3t qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/eeprom-electrically-erasable-programmable-read-only-memory\/\">B\u1ed9 nh\u1edb EEPROM<\/a> c\u00e1c ki\u1ec3m tra v\u00e0 ch\u1ec9 s\u1ed1 DOM c\u0169ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i d\u01b0\u1edbi t\u1ea3i k\u00e9o d\u00e0i n\u1ebfu t\u00edn hi\u1ec7u \u0111i\u1ec7n ho\u1eb7c th\u00f4ng s\u1ed1 quang \u1edf m\u1ee9c gi\u1edbi h\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eb9o k\u1ef9 thu\u1eadt:<\/strong><br\/><br\/>\u0110\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai \u0111a nh\u00e0 cung c\u1ea5p, h\u00e3y l\u1eb7p l\u1ea1i ki\u1ec3m tra l\u01b0u l\u01b0\u1ee3ng v\u1edbi nhi\u1ec1u t\u1ed5 h\u1ee3p kh\u00e1c nhau gi\u1eefa c\u00e1c module SFP v\u00e0 c\u00e1c c\u1ed5ng thi\u1ebft b\u1ecb ch\u1ee7 nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f3m t\u1eaft quy tr\u00ecnh ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u1ee5c \u0111\u00edch<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m tra danh s\u00e1ch t\u01b0\u01a1ng th\u00edch thi\u1ebft b\u1ecb<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tr\u00e1nh vi\u1ec7c t\u1eeb ch\u1ed1i \u1edf c\u1ea5p firmware<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u1eafm module v\u00e0 ki\u1ec3m tra nh\u1eadt k\u00fd CLI<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c minh kh\u1ea3 n\u0103ng nh\u1eadn d\u1ea1ng v\u00e0 ID nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c minh d\u1eef li\u1ec7u DOM<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c nh\u1eadn c\u00e1c th\u00f4ng s\u1ed1 quang\/\u0111i\u1ec7n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c nh\u1eadn thi\u1ebft l\u1eadp li\u00ean k\u1ebft<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m ch\u1ee9ng kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra l\u01b0u l\u01b0\u1ee3ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>C\u00e1c l\u1ed7i t\u01b0\u01a1ng th\u00edch SFP ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi module SFP \u0111\u00e1p \u1ee9ng c\u00e1c \u0111\u1eb7c t\u1ea3 \u0111i\u1ec7n v\u00e0 quang, v\u1eabn c\u00f3 th\u1ec3 ph\u00e1t sinh c\u00e1c v\u1ea5n \u0111\u1ec1 tri\u1ec3n khai do s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 firmware, EEPROM ho\u1eb7c v\u1eadn h\u00e0nh. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c l\u1ed7i t\u01b0\u01a1ng th\u00edch th\u01b0\u1eddng g\u1eb7p nh\u1ea5t v\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra ch\u00fang l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu gi\u00fap k\u1ef9 s\u01b0 ch\u1ea9n \u0111o\u00e1n v\u00e0 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c lo\u1ea1i l\u1ed7i ch\u00ednh c\u00f9ng gi\u1ea3i th\u00edch k\u1ef9 thu\u1eadt t\u01b0\u01a1ng \u1ee9ng.<\/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\/d24f9538b3374d50900ad98781fdd7dd.jpg\" alt=\"Common SFP Compatibility Errors and Troubleshooting\" class=\"wp-image-3270\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d24f9538b3374d50900ad98781fdd7dd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d24f9538b3374d50900ad98781fdd7dd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d24f9538b3374d50900ad98781fdd7dd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d24f9538b3374d50900ad98781fdd7dd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d24f9538b3374d50900ad98781fdd7dd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 B\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00f4 t\u1ea3:<\/strong><br\/>Thi\u1ebft b\u1ecb ch\u1ee7 ph\u00e1t hi\u1ec7n module nh\u01b0ng t\u1eeb ch\u1ed1i k\u00edch ho\u1ea1t c\u1ed5ng, th\u01b0\u1eddng hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n k\u1ef9 thu\u1eadt:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c x\u00e1c th\u1ef1c firmware c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ea5t b\u1ea1i do OUI ho\u1eb7c m\u00e3 linh ki\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n<\/p><\/li><li><p>C\u00e1c tr\u01b0\u1eddng EEPROM kh\u00f4ng kh\u1edbp v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ec7 qu\u1ea3:<\/strong><br\/>Module c\u00f3 th\u1ec3 tu\u00e2n th\u1ee7 v\u1ec1 m\u1eb7t \u0111i\u1ec7n v\u00e0 quang, nh\u01b0ng c\u1ed5ng v\u1eabn kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng cho \u0111\u1ebfn khi c\u00e0i \u0111\u1eb7t module \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1eb7c \u00e1p d\u1ee5ng l\u1ec7nh ghi \u0111\u00e8 firmware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 B\u1ecb v\u00f4 hi\u1ec7u h\u00f3a do l\u1ed7i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00f4 t\u1ea3:<\/strong><br\/>C\u1ed5ng b\u1ecb \u0111\u1eb7t v\u00e0o tr\u1ea1ng th\u00e1i l\u1ed7i-v\u00f4 hi\u1ec7u h\u00f3a m\u1ed9t c\u00e1ch th\u1ee7 c\u00f4ng ho\u1eb7c t\u1ef1 \u0111\u1ed9ng ngay sau khi c\u1eafm m\u00f4-\u0111un.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n k\u1ef9 thu\u1eadt:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a c\u1ed5ng<\/p><\/li><li><p>Ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u \u0111i\u1ec7n kh\u00f4ng \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n SFF-8431 ho\u1eb7c IEEE<\/p><\/li><li><p>Ph\u1ea7n m\u1ec1m\u56fa\u4ef6 ph\u00e1t hi\u1ec7n \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng an to\u00e0n (v\u00ed d\u1ee5: nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t ng\u01b0\u1ee1ng)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ec7 qu\u1ea3:<\/strong><br\/>Giao di\u1ec7n b\u1ecb t\u1eaft \u0111\u1ec3 b\u1ea3o v\u1ec7 ph\u1ea7n c\u1ee9ng. K\u1ef9 s\u01b0 ph\u1ea3i ki\u1ec3m tra nh\u1eadt k\u00fd v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 tr\u01b0\u1edbc khi k\u00edch ho\u1ea1t l\u1ea1i c\u1ed5ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Dao \u0111\u1ed9ng li\u00ean k\u1ebft (Link Flap)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00f4 t\u1ea3:<\/strong><br\/>Li\u00ean k\u1ebft l\u1eb7p \u0111i l\u1eb7p l\u1ea1i chuy\u1ec3n tr\u1ea1ng th\u00e1i l\u00ean\/xu\u1ed1ng, g\u00e2y m\u1ea5t k\u1ebft n\u1ed1i gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n k\u1ef9 thu\u1eadt:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Sai l\u1ec7ch b\u01b0\u1edbc s\u00f3ng gi\u1eefa b\u1ed9 ph\u00e1t v\u00e0 b\u1ed9 thu<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch li\u00ean k\u1ebft quang kh\u00f4ng \u0111\u1ee7 (v\u1ea5n \u0111\u1ec1 v\u1ec1 kho\u1ea3ng c\u00e1ch ho\u1eb7c t\u1ed5n hao s\u1ee3i quang)<\/p><\/li><li><p>M\u1ee9c t\u00edn hi\u1ec7u Tx\/Rx \u1edf bi\u00ean gi\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1edfi DOM<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ec7 qu\u1ea3:<\/strong><br\/>Ngay c\u1ea3 c\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng v\u00e0 t\u01b0\u01a1ng th\u00edch c\u0169ng c\u00f3 th\u1ec3 g\u1eb7p t\u00ecnh tr\u1ea1ng b\u1ea5t \u1ed5n n\u1ebfu c\u00e1c \u0111i\u1ec1u ki\u1ec7n quang h\u1ecdc kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh lo\u1ea1i s\u1ee3i quang, t\u1ea7m xa c\u1ee7a m\u00f4-\u0111un ho\u1eb7c c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u th\u01b0\u1eddng l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u DOM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00f4 t\u1ea3:<\/strong><br\/>The <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26152-10-25-40g-100g-transceiver-modules.htm\">m\u00f4-\u0111un s\u1ee3i quang<\/a> \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng v\u00e0 li\u00ean k\u1ebft \u0111ang ho\u1ea1t \u0111\u1ed9ng, nh\u01b0ng h\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c gi\u00e1 tr\u1ecb Gi\u00e1m s\u00e1t Quang k\u1ef9 thu\u1eadt s\u1ed1 (DOM).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n k\u1ef9 thu\u1eadt:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un thi\u1ebfu kh\u1ea3 n\u0103ng DOM ho\u1eb7c c\u00e1c c\u1edd EEPROM \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp sai<\/p><\/li><li><p>S\u1ef1 c\u1ed1 giao ti\u1ebfp tr\u00ean giao di\u1ec7n I\u00b2C<\/p><\/li><li><p>Ph\u1ea7n m\u1ec1m\u56fa\u4ef6 v\u00f4 hi\u1ec7u h\u00f3a DOM \u0111\u1ed1i v\u1edbi nh\u00e0 cung c\u1ea5p kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ec7 qu\u1ea3:<\/strong><br\/>K\u1ef9 s\u01b0 m\u1ea5t kh\u1ea3 n\u0103ng quan s\u00e1t th\u1eddi gian th\u1ef1c c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 c\u00f4ng su\u1ea5t Tx\/Rx, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c \u0111i\u1ec7n \u00e1p ngu\u1ed3n. M\u1eb7c d\u00f9 l\u01b0u l\u01b0\u1ee3ng v\u1eabn c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c truy\u1ec1n qua, vi\u1ec7c gi\u00e1m s\u00e1t v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Ghi ch\u00fa<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c l\u1ed7i n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ea9n \u0111o\u00e1n m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra nh\u1eadt k\u00fd CLI (<code>show interface transceiver<\/code>, <code>show inventory<\/code>)<\/p><\/li><li><p>X\u00e1c minh DOM (<code>hi\u1ec3n th\u1ecb chi ti\u1ebft b\u1ed9 thu ph\u00e1t giao di\u1ec7n<\/code>)<\/p><\/li><li><p>So s\u00e1nh b\u1ea3n \u0111\u1ed3 b\u1ed9 nh\u1edb EEPROM c\u1ee7a m\u00f4-\u0111un (SFF-8472)<\/p><\/li><li><p>X\u00e1c nh\u1eadn c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n v\u00e0 quang theo ti\u00eau chu\u1ea9n SFF-8431 v\u00e0 IEEE<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u r\u00f5 c\u00e1c c\u01a1 ch\u1ebf l\u1ed7i n\u00e0y gi\u00fap k\u1ef9 s\u01b0 m\u1ea1ng nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n t\u1eeb ph\u1ea7n m\u1ec1m\u56fa\u4ef6, \u0111i\u1ec7n ho\u1eb7c quang, \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai SFP \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>Kh\u00f3a nh\u00e0 cung c\u1ea5p v\u00e0 m\u00f4-\u0111un SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ng\u00e0nh m\u1ea1ng, thu\u1eadt ng\u1eef <strong>kh\u00f3a nh\u00e0 cung c\u1ea5p<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c c\u01a1 ch\u1ebf h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 thu ph\u00e1t quang ch\u1ec9 v\u1edbi c\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb ch\u00ednh th\u1ee9c ph\u00ea duy\u1ec7t. Th\u1ef1c ti\u1ec5n n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 h\u00e0nh vi v\u1eadn h\u00e0nh, nh\u01b0ng \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 hi\u1ec3u n\u00f3 d\u01b0\u1edbi g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt m\u00e0 kh\u00f4ng \u0111\u01b0a ra ph\u00e1n x\u00e9t gi\u00e1 tr\u1ecb.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235.jpg\" alt=\"Vendor Locking and Third-Party SFPs\" class=\"wp-image-3271\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9262825bc801402da6c10b9e98e5c235-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u1ea1n ch\u1ebf t\u1eeb nh\u00e0 cung c\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb m\u1ea1ng tri\u1ec3n khai c\u00e1c ki\u1ec3m tra ph\u1ea7n m\u1ec1m\u56fa\u4ef6 nh\u1eb1m x\u00e1c minh c\u00e1c tr\u01b0\u1eddng <strong>EEPROM<\/strong>, c\u1ee7a m\u00f4-\u0111un, bao g\u1ed3m \u0110\u1ecbnh danh \u0110\u1ed9c nh\u1ea5t T\u1ed5 ch\u1ee9c (OUI), m\u00e3 linh ki\u1ec7n v\u00e0 phi\u00ean b\u1ea3n. N\u1ebfu m\u00f4-\u0111un kh\u00f4ng kh\u1edbp v\u1edbi h\u1ed3 s\u01a1 nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>V\u00f4 hi\u1ec7u h\u00f3a c\u1ed5ng ho\u1eb7c \u0111\u1eb7t c\u1ed5ng v\u00e0o tr\u1ea1ng th\u00e1i l\u1ed7i-v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li><li><p>H\u1ea1n ch\u1ebf truy c\u1eadp d\u1eef li\u1ec7u Gi\u00e1m s\u00e1t Quang k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y kh\u00f4ng do ti\u00eau chu\u1ea9n IEEE hay SFF quy \u0111\u1ecbnh; thay v\u00e0o \u0111\u00f3, ch\u00fang l\u00e0 c\u00e1c ch\u00ednh s\u00e1ch ph\u1ea7n m\u1ec1m\u56fa\u4ef6 \u0111\u1eb7c th\u00f9 c\u1ee7a nh\u00e0 cung c\u1ea5p, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00e1c m\u00f4-\u0111un \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 \u0111\u00e3 ki\u1ec3m tra m\u1edbi \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" ><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476091.htm\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a> H\u1ed7 tr\u1ee3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c cho ph\u00e9p <strong>m\u00f4-\u0111un c\u1ee7a b\u00ean th\u1ee9 ba ho\u1eb7c \u0111a nh\u00e0 cung c\u1ea5p<\/strong> ho\u1ea1t \u0111\u1ed9ng tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a h\u1ecd, mi\u1ec5n l\u00e0 ch\u00fang tu\u00e2n th\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n, quang v\u00e0 giao th\u1ee9c b\u1eaft bu\u1ed9c. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng v\u00e0 k\u00edch ho\u1ea1t ngay l\u1eadp t\u1ee9c<\/p><\/li><li><p>Gi\u00e1m s\u00e1t DOM \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7<\/p><\/li><li><p>Hi\u1ec7u n\u0103ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u00f4-\u0111un c\u1ee7a nh\u00e0 cung c\u1ea5p g\u1ed1c n\u1ebfu c\u00e1c th\u00f4ng s\u1ed1 ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c h\u1ed7 tr\u1ee3 m\u00f4-\u0111un c\u1ee7a b\u00ean th\u1ee9 ba l\u00e0m gi\u1ea3m s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t nh\u00e0 cung c\u1ea5p duy nh\u1ea5t v\u00e0 c\u00f3 th\u1ec3 mang l\u1ea1i t\u00ednh linh ho\u1ea1t v\u1ec1 chi ph\u00ed, tuy nhi\u00ean k\u1ef9 s\u01b0 ph\u1ea3i x\u00e1c minh r\u1eb1ng c\u00e1c m\u00f4-\u0111un \u0111\u00e1p \u1ee9ng \u0111\u00fang y\u00eau c\u1ea7u c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >D\u1ecbch v\u1ee5 m\u00e3 h\u00f3a v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 thu h\u1eb9p kho\u1ea3ng c\u00e1ch t\u01b0\u01a1ng th\u00edch, m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 k\u1ef9 thu\u1eadt t\u1ed3n t\u1ea1i nh\u1eb1m <strong>l\u1eadp tr\u00ecnh l\u1ea1i c\u00e1c tr\u01b0\u1eddng EEPROM<\/strong> \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi k\u1ef3 v\u1ecdng c\u1ee7a nh\u00e0 cung c\u1ea5p. C\u00e1c d\u1ecbch v\u1ee5 n\u00e0y c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tr\u01b0\u1eddng OUI v\u00e0 m\u00e3 linh ki\u1ec7n c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>M\u00e3 phi\u00ean b\u1ea3n v\u00e0 c\u1edd t\u00ednh n\u0103ng<\/p><\/li><li><p>C\u1edd kh\u1ea3 n\u0103ng DOM<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c d\u1ecbch v\u1ee5 m\u00e3 h\u00f3a nh\u01b0 v\u1eady cho ph\u00e9p c\u00e1c m\u00f4-\u0111un quang v\u1ed1n t\u01b0\u01a1ng th\u00edch \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng nh\u1eadn d\u1ea1ng, ngay c\u1ea3 khi h\u1ec7 th\u1ed1ng \u00e1p d\u1ee5ng ch\u00ednh s\u00e1ch ph\u1ea7n m\u1ec1m\u56fa\u4ef6 nghi\u00eam ng\u1eb7t h\u01a1n. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, vi\u1ec7c n\u00e0y kh\u00f4ng thay \u0111\u1ed5i hi\u1ec7u n\u0103ng \u0111i\u1ec7n ho\u1eb7c quang c\u1ee7a m\u00f4-\u0111un; n\u00f3 ch\u1ec9 s\u1eeda \u0111\u1ed5i si\u00eau d\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng logic x\u00e1c th\u1ef1c ph\u1ea7n m\u1ec1m\u56fa\u4ef6.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>Danh s\u00e1ch ki\u1ec3m tra x\u00e1c th\u1ef1c t\u00ednh t\u01b0\u01a1ng th\u00edch SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">module SFP quang<\/a> ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u00f2i h\u1ecfi vi\u1ec7c x\u00e1c minh h\u1ec7 th\u1ed1ng tr\u00ean c\u00e1c l\u1edbp \u0111i\u1ec7n, quang v\u00e0 ph\u1ea7n m\u1ec1m\u56fa\u4ef6. Danh s\u00e1ch ki\u1ec3m tra sau \u0111\u00e2y cung c\u1ea5p quy tr\u00ecnh ng\u1eafn g\u1ecdn, c\u00f3 th\u1ec3 ki\u1ec3m ch\u1ee9ng b\u1edfi k\u1ef9 s\u01b0 nh\u1eb1m x\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch tr\u01b0\u1edbc khi tri\u1ec3n khai. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u r\u1ee7i ro m\u1ea5t li\u00ean k\u1ebft, c\u1ed5ng b\u1ecb l\u1ed7i-v\u00f4 hi\u1ec7u h\u00f3a ho\u1eb7c l\u1ed7i \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d.<\/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\/4e21d2ea7ff64d28b36bbaa2f5556ea1.jpg\" alt=\"SFP Compatibility Validation Checklist\" class=\"wp-image-3272\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4e21d2ea7ff64d28b36bbaa2f5556ea1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4e21d2ea7ff64d28b36bbaa2f5556ea1-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4e21d2ea7ff64d28b36bbaa2f5556ea1-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4e21d2ea7ff64d28b36bbaa2f5556ea1-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4e21d2ea7ff64d28b36bbaa2f5556ea1-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Ph\u00f9 h\u1ee3p t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh r\u1eb1ng m\u00f4-\u0111un SFP h\u1ed7 tr\u1ee3 c\u00f9ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u v\u1edbi c\u1ed5ng ch\u1ee7 (v\u00ed d\u1ee5: 1G, 10G, 25G).<\/p><\/li><li><p>Ki\u1ec3m tra s\u1ef1 ph\u00f9 h\u1ee3p giao th\u1ee9c theo ti\u00eau chu\u1ea9n IEEE:<\/p><ul><li><p>1G: IEEE 802.3z<\/p><\/li><li><p>10G: IEEE 802.3ae<\/p><\/li><\/ul><\/li><li><p>Sai l\u1ec7ch t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c thi\u1ebft l\u1eadp li\u00ean k\u1ebft ngay c\u1ea3 khi c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n v\u00e0 quang l\u00e0 ch\u00ednh x\u00e1c.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ph\u00f9 h\u1ee3p b\u01b0\u1edbc s\u00f3ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn b\u01b0\u1edbc s\u00f3ng ph\u00e1t c\u1ee7a m\u00f4-\u0111un t\u01b0\u01a1ng \u1ee9ng v\u1edbi lo\u1ea1i s\u1ee3i quang v\u00e0 m\u00f4-\u0111un \u1edf \u0111\u1ea7u xa:<\/p><ul><li><p>M\u00f4-\u0111un SR: 850 nm (\u0111a mode)<\/p><\/li><li><p>M\u00f4-\u0111un LR\/ER: 1310 nm ho\u1eb7c 1550 nm (\u0111\u01a1n mode)<\/p><\/li><\/ul><\/li><li><p>Sai l\u1ec7ch b\u01b0\u1edbc s\u00f3ng d\u1eabn \u0111\u1ebfn c\u00f4ng su\u1ea5t quang kh\u00f4ng \u0111\u1ee7 t\u1ea1i b\u1ed9 thu v\u00e0 t\u1ef7 l\u1ec7 l\u1ed7i bit cao.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c nh\u1eadn ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u00f4ng su\u1ea5t quang ph\u00e1t (Tx) tr\u1eeb t\u1ed5ng t\u1ed5n hao li\u00ean k\u1ebft \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ee7a b\u1ed9 thu:<\/p><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\">\n<code>Tx(min) \u2212 T\u1ed5ng t\u1ed5n hao li\u00ean k\u1ebft \u2265 Rx(\u0111\u1ed9 nh\u1ea1y)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><span>Bao g\u1ed3m to\u00e0n b\u1ed9 suy hao s\u1ee3i quang, t\u1ed5n hao \u0111\u1ea7u n\u1ed1i v\u00e0 t\u1ed5n hao m\u1ed1i n\u1ed1i trong t\u00ednh to\u00e1n.<\/span><\/p><\/li><li><p><span>Ki\u1ec3m tra c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 (DOM) \u0111\u1ed1i v\u1edbi c\u00f4ng su\u1ea5t ph\u00e1t (Tx)\/thu (Rx) \u0111\u1ec3 x\u00e1c minh c\u00e1c bi\u00ean d\u1ef1 ph\u00f2ng ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c minh m\u00e3 h\u00f3a EEPROM<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn r\u1eb1ng c\u00e1c tr\u01b0\u1eddng trong EEPROM tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a Hi\u1ec7p \u0111\u1ecbnh Ti\u00eau chu\u1ea9n \u0110a nh\u00e0 s\u1ea3n xu\u1ea5t (MSA) v\u00e0 k\u1ef3 v\u1ecdng c\u1ee7a nh\u00e0 cung c\u1ea5p (SFF-8472):<\/p><ul><li><p>M\u00e3 \u0111\u1ecbnh danh nh\u00e0 cung c\u1ea5p (OUI) v\u00e0 t\u00ean nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>S\u1ed1 ph\u1ee5 t\u00f9ng<\/p><\/li><li><p>Phi\u00ean b\u1ea3n\/\u0111\u00e1nh d\u1ea5u t\u00ednh n\u0103ng<\/p><\/li><li><p>X\u00e1c th\u1ef1c t\u1ed5ng ki\u1ec3m tra (checksum)<\/p><\/li><\/ul><\/li><li><p>Vi\u1ec7c m\u00e3 h\u00f3a sai c\u00f3 th\u1ec3 g\u00e2y ra vi\u1ec7c firmware t\u1eeb ch\u1ed1i module, ngay c\u1ea3 khi module \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111i\u1ec7n v\u00e0 quang.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra phi\u00ean b\u1ea3n firmware<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh r\u1eb1ng firmware c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 h\u1ed7 tr\u1ee3 module \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o.<\/p><\/li><li><p>M\u1ed9t s\u1ed1 module y\u00eau c\u1ea7u phi\u00ean b\u1ea3n firmware t\u1ed1i thi\u1ec3u \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao nh\u01b0 ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 (DOM) ho\u1eb7c kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn m\u1edf r\u1ed9ng.<\/p><\/li><li><p>Vi\u1ec7c s\u1eed d\u1ee5ng firmware l\u1ed7i th\u1eddi c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u1ea3nh b\u00e1o \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d ho\u1eb7c ch\u1ec9 k\u00edch ho\u1ea1t m\u1ed9t ph\u1ea7n c\u00e1c t\u00ednh n\u0103ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ghi ch\u00fa k\u1ef9 thu\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ho\u00e0n t\u1ea5t danh s\u00e1ch ki\u1ec3m tra n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t module SFP l\u00e0 <strong>t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t \u0111i\u1ec7n, t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t quang, \u0111\u01b0\u1ee3c firmware nh\u1eadn di\u1ec7n v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7<\/strong>. Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p, h\u00e3y l\u1eb7p l\u1ea1i c\u00e1c ki\u1ec3m tra n\u00e0y cho t\u1eebng lo\u1ea1i module v\u00e0 t\u1eebng k\u1ecbch b\u1ea3n tri\u1ec3n khai nh\u1eb1m duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng d\u1ef1 b\u00e1o \u0111\u01b0\u1ee3c c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd34 <\/strong>C\u00e1c khuy\u1ebfn ngh\u1ecb v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng, t\u00ednh t\u01b0\u01a1ng th\u00edch SFP c\u1ea7n \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t quy tr\u00ecnh x\u00e1c th\u1ef1c \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t gi\u1ea3 \u0111\u1ecbnh. C\u00e1c khuy\u1ebfn ngh\u1ecb sau \u0111\u00e2y gi\u00fap gi\u1ea3m r\u1ee7i ro tri\u1ec3n khai v\u00e0 t\u00ecnh tr\u1ea1ng b\u1ea5t \u1ed5n trong v\u1eadn h\u00e0nh 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\/2b4a2d71183e41e99fe43b53facc755e.jpg\" alt=\"SFP Compatibility Recommendations\" class=\"wp-image-3273\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2b4a2d71183e41e99fe43b53facc755e.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2b4a2d71183e41e99fe43b53facc755e-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2b4a2d71183e41e99fe43b53facc755e-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2b4a2d71183e41e99fe43b53facc755e-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2b4a2d71183e41e99fe43b53facc755e-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Lu\u00f4n x\u00e1c th\u1ef1c tr\u01b0\u1edbc khi tri\u1ec3n khai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m tr\u01b0\u1edbc khi tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p><\/li><li><p>X\u00e1c nh\u1eadn vi\u1ec7c thi\u1ebft l\u1eadp li\u00ean k\u1ebft, c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 (DOM) v\u00e0 b\u1ed9 \u0111\u1ebfm l\u1ed7i.<\/p><\/li><li><p>X\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c trong m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c switch\/router d\u01b0\u1edbi t\u1ea3i l\u01b0u l\u01b0\u1ee3ng d\u1ef1 ki\u1ebfn.<\/p><\/li><li><p>Ghi l\u1ea1i c\u00e1c gi\u00e1 tr\u1ecb c\u01a1 s\u1edf v\u1ec1 c\u00f4ng su\u1ea5t quang, nhi\u1ec7t \u0111\u1ed9 v\u00e0 d\u00f2ng ph\u00e2n c\u1ef1c \u0111\u1ec3 tham kh\u1ea3o cho vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 trong t\u01b0\u01a1ng lai.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c th\u1ef1c tr\u01b0\u1edbc tri\u1ec3n khai gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 c\u00e1c s\u1ef1 c\u1ed1 x\u1ea3y ra t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng c\u0169ng nh\u01b0 c\u00e1c h\u1ea1n ch\u1ebf do firmware g\u00e2y ra m\u1ed9t c\u00e1ch b\u1ea5t ng\u1edd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Tr\u00e1nh c\u1ea5u h\u00ecnh b\u01b0\u1edbc s\u00f3ng h\u1ed7n h\u1ee3p<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng tr\u1ed9n l\u1eabn c\u00e1c module 850 nm (SR) v\u00e0 1310\/1550 nm (LR\/ER) tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng c\u00e1p s\u1ee3i quang.<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u c\u1ee7a li\u00ean k\u1ebft s\u1eed d\u1ee5ng c\u00f9ng b\u01b0\u1edbc s\u00f3ng v\u00e0 c\u00f9ng l\u1edbp kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn.<\/p><\/li><li><p>For <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27039-1g-bidi-sfp.htm\">BiDi<br><\/a> Trong c\u00e1c tri\u1ec3n khai, h\u00e3y x\u00e1c minh c\u00e1c c\u1eb7p b\u01b0\u1edbc s\u00f3ng kh\u1edbp nhau (v\u00ed d\u1ee5: ph\u00e1t 1310 nm \/ thu 1550 nm \u1edf m\u1ed9t ph\u00eda, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i \u1edf ph\u00eda kia).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00f4ng kh\u1edbp b\u01b0\u1edbc s\u00f3ng l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra c\u00e1c t\u00ecnh hu\u1ed1ng \u201cli\u00ean k\u1ebft b\u1eadt nh\u01b0ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh\u201d ho\u1eb7c ho\u00e0n to\u00e0n m\u1ea5t li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a firmware<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chu\u1ea9n h\u00f3a phi\u00ean b\u1ea3n firmware tr\u00ean to\u00e0n b\u1ed9 c\u00e1c n\u1ec1n t\u1ea3ng switch gi\u1ed1ng nhau.<\/p><\/li><li><p>Tr\u00e1nh tr\u1ed9n c\u00e1c phi\u00ean b\u1ea3n firmware kh\u00e1c nhau trong c\u00f9ng m\u1ed9t ph\u00e2n \u0111o\u1ea1n m\u1ea1ng.<\/p><\/li><li><p>Xem x\u00e9t c\u00e1c ghi ch\u00fa ph\u00e1t h\u00e0nh tr\u01b0\u1edbc khi n\u00e2ng c\u1ea5p \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c thay \u0111\u1ed5i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u00ednh s\u00e1ch x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a firmware ng\u0103n ng\u1eeba c\u00e1c h\u00e0nh vi kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ed7i \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d \u0111\u1ed9t ng\u1ed9t xu\u1ea5t hi\u1ec7n sau khi c\u1eadp nh\u1eadt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f3m t\u1eaft k\u1ef9 thu\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai SFP \u0111\u00e1ng tin c\u1eady \u0111\u00f2i h\u1ecfi s\u1ef1 \u0111\u1ed3ng b\u1ed9 tr\u00ean b\u1ed1n l\u1edbp:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t \u0111i\u1ec7n<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang h\u1ecdc<\/p><\/li><li><p>Nh\u1eadn d\u1ea1ng qua EEPROM<\/p><\/li><li><p>X\u00e1c th\u1ef1c b\u1edfi firmware thi\u1ebft b\u1ecb ch\u1ee7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch x\u00e1c minh h\u1ec7 th\u1ed1ng c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ecm c\u00e1c module quang \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n v\u00e0 h\u1ed7 tr\u1ee3 t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 cung c\u1ea5p, vui l\u00f2ng truy c\u1eadp <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> \u0111\u1ec3 xem th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch SFP, bao g\u1ed3m kh\u1edbp t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u, l\u1ef1a ch\u1ecdn b\u01b0\u1edbc s\u00f3ng, t\u00ednh to\u00e1n ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t, m\u00e3 h\u00f3a EEPROM, x\u00e1c th\u1ef1c firmware v\u00e0 kh\u00f3a nh\u00e0 cung c\u1ea5p (vendor locking).<\/p>","protected":false},"author":1,"featured_media":3274,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-3275","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3275","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=3275"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3275\/revisions"}],"predecessor-version":[{"id":10772,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3275\/revisions\/10772"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3274"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}