{"id":5261,"date":"2025-09-02T00:00:00","date_gmt":"2025-09-02T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-ddmi-digital-diagnostic-monitoring-interface\/"},"modified":"2026-06-22T07:55:08","modified_gmt":"2026-06-22T07:55:08","slug":"what-is-ddmi-digital-diagnostic-monitoring-interface","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/vi\/glossary\/what-is-ddmi-digital-diagnostic-monitoring-interface","title":{"rendered":"DDMI (Giao di\u1ec7n Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1): H\u01b0\u1edbng d\u1eabn r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c b\u1ed9 thu ph\u00e1t quang th\u00f4ng minh h\u01a1n"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204.webp\" alt=\"DDMI\uff1aDigital Diagnostic Monitoring Interface\" class=\"wp-image-5258\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/fabf931c6d8245e5919af771987a5204-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 <\/strong>DDMI L\u00e0 G\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ecbnh ngh\u0129a<br><\/strong><br\/>DDMI l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Giao di\u1ec7n Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1<\/strong>. \u0110\u00e2y l\u00e0 m\u1ed9t giao di\u1ec7n ti\u00eau chu\u1ea9n\u2014theo th\u1ecfa thu\u1eadn SFF-8472\u2014cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ecdc th\u00f4ng tin s\u1ee9c kh\u1ecfe th\u1eddi gian th\u1ef1c tr\u1ef1c ti\u1ebfp t\u1eeb c\u00e1c b\u1ed9 thu ph\u00e1t quang nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">SFP<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a>, and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP<\/a> hay \u0111\u01a1n mode (SMF).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u01a1 ch\u1ebf Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Giao di\u1ec7n<\/strong><br\/>S\u1eed d\u1ee5ng bus hai d\u00e2y I\u00b2C, DDMI giao ti\u1ebfp v\u1edbi vi \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u00f4-\u0111un, v\u1ed1n chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 n\u1ed9i b\u1ed9 th\u00e0nh d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n d\u01b0\u1edbi d\u1ea1ng k\u1ef9 thu\u1eadt s\u1ed1. Th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c v\u00f9ng b\u1ed9 nh\u1edb chuy\u00ean bi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/sfp-8472-standard-explained-ddm-for-optical-transceivers\/\">Long-distance fiber links<\/a> v\u00e0 c\u00f3 th\u1ec3 truy c\u1eadp th\u00f4ng qua c\u00e1c \u0111\u1ecba ch\u1ec9 I\u00b2C c\u1ee5 th\u1ec3 (A2h cho ch\u1ea9n \u0111o\u00e1n).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 <\/strong>V\u00ec Sao DDMI Quan Tr\u1ecdng?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ph\u00e1t Hi\u1ec7n S\u1ef1 C\u1ed1 Ch\u1ee7 \u0110\u1ed9ng<\/strong><br\/>V\u1edbi c\u00e1c ch\u1ec9 s\u1ed1 tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 lu\u00f4n s\u1eb5n c\u00f3, c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n c\u00e1c d\u1ea5u hi\u1ec7u s\u1edbm c\u1ee7a s\u1ef1 c\u1ed1\u2014nh\u01b0 qu\u00e1 nhi\u1ec7t ho\u1eb7c suy gi\u1ea3m t\u00edn hi\u1ec7u\u2014tr\u01b0\u1edbc khi ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng.<\/p><\/li><li><p><strong>T\u00ednh T\u01b0\u01a1ng th\u00edch Ti\u00eau Chu\u1ea9n H\u00f3a<\/strong><br\/>C\u00e1c m\u00f4-\u0111un tu\u00e2n th\u1ee7 SFF-8472, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">m\u00f4-\u0111un quang h\u1ed7 tr\u1ee3 DDM c\u1ee7a LINK-PP<\/a>, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ea9n \u0111o\u00e1n nh\u1ea5t qu\u00e1n tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau.<\/p><\/li><li><p><strong>Kh\u1eafc Ph\u1ee5c S\u1ef1 C\u1ed1 Nhanh H\u01a1n<\/strong><br\/>Vi\u1ec7c truy c\u1eadp d\u1eef li\u1ec7u DDMI th\u1eddi gian th\u1ef1c th\u00f4ng qua CLI, SNMP ho\u1eb7c NMS gi\u00fap x\u00e1c \u0111\u1ecbnh nhanh ch\u00f3ng v\u1ecb tr\u00ed s\u1ef1 c\u1ed1 v\u00e0 thay th\u1ebf c\u00e1c m\u00f4-\u0111un g\u1eb7p v\u1ea5n \u0111\u1ec1 m\u00e0 kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 <\/strong>C\u00e1c Tham S\u1ed1 Ch\u00ednh \u0110\u01b0\u1ee3c Gi\u00e1m S\u00e1t Qua DDMI<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff.webp\" alt=\"What Is DDMI? Digital Diagnostic Monitoring Interface\" class=\"wp-image-5259\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/c91e18b5c0d9407ab449aecbaabf13ff-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">DDMI cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o th\u1eddi gian th\u1ef1c \u0111\u1ed1i v\u1edbi nhi\u1ec1u tham s\u1ed1 quan tr\u1ecdng:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Nhi\u1ec7t \u0111\u1ed9<\/strong> \u2013 Theo d\u00f5i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00f4-\u0111un, y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 tr\u00e1nh c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn nhi\u1ec7t.<\/p><\/li><li><p><strong>\u0110i\u1ec7n \u00e1p c\u1ea5p ngu\u1ed3n<\/strong> \u2013 \u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un quang nh\u1eadn \u0111\u01b0\u1ee3c ngu\u1ed3n \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh; c\u00e1c sai l\u1ec7ch c\u00f3 th\u1ec3 cho th\u1ea5y v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111i\u1ec7n.<\/p><\/li><li><p><strong>D\u00f2ng thi\u00ean \u00e1p laser<\/strong> \u2013 Gi\u00e1m s\u00e1t d\u00f2ng \u0111i\u1ec7n \u0111i\u1ec1u khi\u1ec3n \u0111i-\u1ed1t laser, cho bi\u1ebft t\u00ecnh tr\u1ea1ng l\u00e3o h\u00f3a ho\u1eb7c s\u1ef1 c\u1ed1 s\u1eafp x\u1ea3y ra.<\/p><\/li><li><p><strong>C\u00f4ng su\u1ea5t Quang Ph\u00e1t (TX)<\/strong> \u2013 Ki\u1ec3m tra xem t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u00f3 n\u1eb1m trong d\u1ea3i t\u1ed1i \u01b0u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i t\u1ed1t hay kh\u00f4ng.<\/p><\/li><li><p><strong>C\u00f4ng su\u1ea5t Quang Thu (RX)<\/strong> \u2013 Gi\u00e1m s\u00e1t c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o; gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 s\u1ee3i quang ho\u1eb7c c\u0103n ch\u1ec9nh.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ch\u1ec9 s\u1ed1 th\u1eddi gian th\u1ef1c n\u00e0y cho ph\u00e9p th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec ch\u1ee7 \u0111\u1ed9ng v\u00e0 duy tr\u00ec t\u00ednh \u1ed5n \u0111\u1ecbnh trong hi\u1ec7u n\u0103ng m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 <\/strong>C\u00e1ch Truy C\u1eadp D\u1eef Li\u1ec7u DDMI<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Giao Di\u1ec7n CLI<\/strong>: Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn cho ph\u00e9p s\u1eed d\u1ee5ng l\u1ec7nh (v\u00ed d\u1ee5: \u201cshow interface transceiver\u201d) \u0111\u1ec3 hi\u1ec3n th\u1ecb c\u00e1c gi\u00e1 tr\u1ecb DDMI.<\/p><\/li><li><p><strong>T\u00edch H\u1ee3p SNMP\/NMS<\/strong>: C\u00e1c gi\u00e1 tr\u1ecb DDMI c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy v\u1ea5n v\u00e0 l\u01b0u l\u1ea1i nh\u1eb1m ph\u00e2n t\u00edch xu h\u01b0\u1edbng ho\u1eb7c c\u1ea5u h\u00ecnh c\u1ea3nh b\u00e1o.<\/p><\/li><li><p><strong>C\u00f4ng C\u1ee5 C\u1ee7a Nh\u00e0 S\u1ea3n Xu\u1ea5t<\/strong>: M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ed9 thu ph\u00e1t cung c\u1ea5p c\u00e1c ti\u1ec7n \u00edch ph\u1ea7n m\u1ec1m \u0111\u1ec3 hi\u1ec3n th\u1ecb ch\u1ea9n \u0111o\u00e1n th\u1eddi gian th\u1ef1c.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 <\/strong> DDMI Trong Th\u1ef1c T\u1ebf: M\u00f4-\u0111un LS-MM8532-S1C c\u1ee7a LINK-PP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u00ed d\u1ee5 n\u1ed5i b\u1eadt v\u1ec1 kh\u1ea3 n\u0103ng DDMI trong danh m\u1ee5c s\u1ea3n ph\u1ea9m c\u1ee7a LINK-PP l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488477.htm\"><strong>LS-MM8532-S1C<\/strong> <\/a>\u2014 m\u1ed9t <strong>b\u1ed9 thu ph\u00e1t 32 Gb\/s (SFP28) 850 nm<\/strong> h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn 100 m tr\u00ean c\u00e1p quang \u0111a mode (MMF) v\u00e0 t\u00edch h\u1ee3p \u0111\u1ea7y \u0111\u1ee7 <strong>ch\u1ee9c n\u0103ng DDMI<\/strong>. M\u00f4-\u0111un n\u00e0y t\u00edch h\u1ee3p b\u1ed9 ph\u00e1t VCSEL, \u0111i-\u1ed1t quang PIN k\u00e8m khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u quang (TIA), v\u00e0 vi \u0111i\u1ec1u khi\u1ec3n (MCU) nh\u1eb1m h\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n tr\u1ef1c ti\u1ebfp trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00f4-\u0111un n\u00e0y ch\u1ee9ng minh r\u1eb1ng ngay c\u1ea3 \u1edf t\u1ed1c \u0111\u1ed9 cao (32 Gb\/s), vi\u1ec7c truy c\u1eadp ch\u1ea9n \u0111o\u00e1n \u0111\u00e1ng tin c\u1eady v\u1eabn c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua c\u00e1c giao di\u1ec7n ti\u00eau chu\u1ea9n\u2014l\u00e0m cho n\u00f3 l\u00fd t\u01b0\u1edfng cho trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u00e1c c\u1ea5u h\u00ecnh m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4<\/strong> L\u1ee3i \u00cdch C\u1ee7a C\u00e1c M\u00f4-\u0111un H\u1ed7 Tr\u1ee3 DDMI<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u1ec7 Th\u1ed1ng C\u1ea3nh B\u00e1o S\u1edbm<\/strong>: C\u00e1c xu h\u01b0\u1edbng nh\u01b0 nhi\u1ec7t \u0111\u1ed9 t\u0103ng d\u1ea7n ho\u1eb7c c\u00f4ng su\u1ea5t TX gi\u1ea3m d\u1ea7n c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u nhu c\u1ea7u b\u1ea3o tr\u00ec ph\u00f2ng ng\u1eeba.<\/p><\/li><li><p><strong>Chu\u1ea9n h\u00f3a<\/strong>: Truy c\u1eadp nh\u1ea5t qu\u00e1n tr\u00ean <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">m\u00f4-\u0111un<\/a>\u2014ngay c\u1ea3 t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau\u2014gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u1ea3n l\u00fd t\u00e0i s\u1ea3n.<\/p><\/li><li><p><strong>Gi\u1ea3m Th\u1eddi Gian Ng\u1eebng Ho\u1ea1t \u0110\u1ed9ng<\/strong>: C\u00e1c m\u00f4-\u0111un l\u1ed7i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 thay th\u1ebf nhanh ch\u00f3ng, n\u00e2ng cao kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ee7a m\u1ea1ng.<\/p><\/li><li><p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong>: T\u1eeb c\u00e1c h\u1ec7 th\u1ed1ng nh\u1ecf \u0111\u1ebfn m\u1ea1ng quy m\u00f4 l\u1edbn, vi\u1ec7c gi\u00e1m s\u00e1t t\u1eadp trung DDMI m\u1edf r\u1ed9ng linh ho\u1ea1t v\u00e0 li\u1ec1n m\u1ea1ch.<\/p><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 c\u00e1ch DDMI \u2014 Giao di\u1ec7n Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1 \u2014 cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft th\u1eddi gian th\u1ef1c v\u1ec1 c\u00e1c b\u1ed9 thu ph\u00e1t quang. T\u00ecm hi\u1ec3u c\u00e1c ch\u1ec9 s\u1ed1 ch\u00ednh, l\u1ee3i \u00edch v\u00e0 c\u00e1ch c\u00e1c m\u00f4-\u0111un LINK-PP h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng n\u00e0y.<\/p>","protected":false},"author":1,"featured_media":5260,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-5261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/comments?post=5261"}],"version-history":[{"count":5,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5261\/revisions"}],"predecessor-version":[{"id":11197,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5261\/revisions\/11197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media\/5260"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media?parent=5261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/categories?post=5261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/tags?post=5261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}