{"id":5244,"date":"2025-09-03T00:00:00","date_gmt":"2025-09-03T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/ddmi-vs-ddm-in-optical-transceivers\/"},"modified":"2026-06-22T07:51:52","modified_gmt":"2026-06-22T07:51:52","slug":"ddmi-vs-ddm-in-optical-transceivers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/ddmi-vs-ddm-in-optical-transceivers","title":{"rendered":"DDMI contre DDM : Comprendre la diff\u00e9rence entre interfaces et diagnostics dans les modules optiques"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3.webp\" alt=\"DDMI vs DDM\" class=\"wp-image-5240\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7d2dca7277a84801b22e6575b03717b3-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u2019est-ce que le DDM ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>DDM<\/strong><\/a> signifie <strong>Surveillance num\u00e9rique des diagnostics<\/strong> (\u00e9galement appel\u00e9 surveillance optique num\u00e9rique, ou DOM). Il d\u00e9signe la <strong>fonction<\/strong> qui permet aux op\u00e9rateurs r\u00e9seau d\u2019acc\u00e9der \u00e0 des informations op\u00e9rationnelles en temps r\u00e9el provenant des \u00e9metteurs-r\u00e9cepteurs optiques. Cela inclut des param\u00e8tres cl\u00e9s tels que la temp\u00e9rature, la tension d\u2019alimentation, le courant de polarisation de la diode laser, ainsi que la puissance optique \u00e9mise\/re\u00e7ue. Ces mesures permettent de d\u00e9tecter les probl\u00e8mes avant qu\u2019ils n\u2019affectent les performances.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Qu\u2019est-ce que le DDMI ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/what-is-ddmi-digital-diagnostic-monitoring-interface\/\"><strong>DDMI<\/strong><\/a> refers to the <strong>100% retain all original HTML format.<\/strong>\u2014c\u2019est-\u00e0-dire le m\u00e9canisme normalis\u00e9 (g\u00e9n\u00e9ralement sur bus I\u00b2C) d\u00e9fini par l\u2019MSA SFF-8472, au moyen duquel les donn\u00e9es DDM sont accessibles. C\u2019est cette interface qui permet aux dispositifs h\u00f4tes d\u2019interroger de fa\u00e7on coh\u00e9rente les donn\u00e9es de diagnostic du module.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comparaison c\u00f4te \u00e0 c\u00f4te<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 115px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"115\"><p>Term<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Signification<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Focus<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"115\"><p><strong>DDM<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Surveillance num\u00e9rique des diagnostics (fonctionnalit\u00e9)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quels diagnostics sont disponibles<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"115\"><p><strong>DDMI<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100% retain all original HTML format.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Comment les diagnostics sont-ils accessibles<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">En bref : <strong>Le DDM est la donn\u00e9e<\/strong>, and <strong>Le DDMI est le chemin<\/strong> permettant de la r\u00e9cup\u00e9rer.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi cette distinction est-elle importante<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Clart\u00e9 dans la communication<\/strong>: L\u2019utilisation du terme correct aide les \u00e9quipes techniques \u00e0 comprendre si vous faites r\u00e9f\u00e9rence \u00e0 la capacit\u00e9 de diagnostic (DDM) ou \u00e0 la m\u00e9thode permettant de l\u2019obtenir (DDMI).<\/p><\/li>\n\n\n\n<li><p><strong>Connaissance pratique de l\u2019impl\u00e9mentation<\/strong>: Lors de la recherche ou de la r\u00e9solution de probl\u00e8mes li\u00e9s aux modules optiques, savoir si vous traitez avec une couche de pr\u00e9sentation (DDM) ou une couche d\u2019interface (DDMI) permet d\u2019\u00e9viter toute confusion.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Applications pratiques<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39-1024x608.webp\" alt=\"Applications in Practice\" class=\"wp-image-5241\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7682375c738442eb9bb736b53abcae39.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Surveillance en temps r\u00e9el<\/strong><br>Le DDM \/ DDMI permet un acc\u00e8s continu \u00e0 des m\u00e9triques telles que la temp\u00e9rature, la tension, le courant laser, la puissance TX\/RX, essentielles pour une maintenance proactive.<\/p><\/li>\n\n\n\n<li><p><strong>Compatibilit\u00e9 d\u2019interface standard<\/strong><br>The <a href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/sfp-8472-standard-explained-ddm-for-optical-transceivers\/\" target=\"_blank\" rel=\"\">Norme SFF-8472<\/a> garantit que les modules provenant de diff\u00e9rents fournisseurs offrent un acc\u00e8s coh\u00e9rent aux diagnostics via le DDMI.<\/p><\/li>\n\n\n\n<li><p><strong>D\u00e9tection et signalisation des pannes<\/strong><br>Certains syst\u00e8mes d\u00e9tectent les violations de seuil indiqu\u00e9es par le DDM et d\u00e9clenchent des alarmes via la r\u00e9cup\u00e9ration des donn\u00e9es DDMI.<\/p><\/li>\n\n\n\n<li><p><strong>D\u00e9pannage simplifi\u00e9<\/strong><br>Par l\u2019interm\u00e9diaire de l\u2019interface en ligne de commande (CLI) ou du protocole SNMP\u2014en acc\u00e9dant au DDMI\u2014les techniciens peuvent rapidement isoler les modules en panne ou d\u00e9grad\u00e9s.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Exemple LINK-PP : DDMI + DDM en action<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442.webp\" alt=\"LINK-PP Optical Modules\" class=\"wp-image-5242\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f1de02f7d0e14ca48b46c9ad50c0d442-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Un exemple concret de cette synergie est <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/products\/ls-mm8532-s1c-sfp28-transceivers-for-data-center-upgrade\/\"><strong>le LS-MM8532-S1C de LINK-PP<\/strong> LS-SM5510-40C<\/a>\u2014un <strong>transceiver SFP28 de 32 Gb\/s \u00e0 850 nm, port\u00e9e de 100 m, dot\u00e9 d\u2019un support complet du DDMI<\/strong>. Ce produit permet au dispositif h\u00f4te de lire les diagnostics en direct\u2014via son interface DDMI\u2014sur la temp\u00e9rature, la tension, la polarisation laser et la puissance TX\/RX, illustrant ainsi l\u2019avantage pratique de combiner les deux.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment cela vous aide-t-il<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Achats \u00e9clair\u00e9s<\/strong>: V\u00e9rifiez la fonctionnalit\u00e9 DDM et la compatibilit\u00e9 DDMI dans les sp\u00e9cifications produits.<\/p><\/li>\n\n\n\n<li><p><strong>Confiance op\u00e9rationnelle<\/strong>: Utilisez le DDMI pour extraire des diagnostics d\u00e9taill\u00e9s, ce qui permet des interventions proactives avant tout impact sur le service.<\/p><\/li>\n\n\n\n<li><p><strong>Interop\u00e9rabilit\u00e9 universelle<\/strong>: Comptez sur le DDMI et le DDM conformes \u00e0 la norme SFF-8472, compatibles avec une large gamme de marques de transceivers, y compris LINK-PP.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Comprendre la diff\u00e9rence entre <strong>DDM<\/strong> (les diagnostics) et <strong>DDMI<\/strong> (l\u2019interface) permettent une prise de d\u00e9cision plus avis\u00e9e et une maintenance r\u00e9seau plus efficace. Pour des performances robustes et des diagnostics sans accroc, explorez la gamme de <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488477.htm\">transceivers optiques am\u00e9lior\u00e9s DDMI<\/a> de LINK-PP dans leur <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">boutique officielle de produits.<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>D\u00e9couvrez la diff\u00e9rence entre DDMI (interface) et DDM (diagnostics) dans les transceivers optiques. Apprenez comment chacun permet une surveillance en temps r\u00e9el et comment les produits LINK-PP les exploitent.<\/p>","protected":false},"author":1,"featured_media":5243,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5244","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\/fr\/wp-json\/wp\/v2\/posts\/5244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/comments?post=5244"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/5244\/revisions"}],"predecessor-version":[{"id":11191,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/5244\/revisions\/11191"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media\/5243"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media?parent=5244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/categories?post=5244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/tags?post=5244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}