{"id":3347,"date":"2025-12-08T00:00:00","date_gmt":"2025-12-08T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/xlaui-vs-xlppi-40g-electrical-interface-comparison\/"},"modified":"2026-06-22T04:14:52","modified_gmt":"2026-06-22T04:14:52","slug":"xlaui-vs-xlppi-40g-electrical-interface-comparison","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/xlaui-vs-xlppi-40g-electrical-interface-comparison","title":{"rendered":"XLPPI contre XLAUI expliqu\u00e9 : interfaces \u00e9lectriques pour modules QSFP"},"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\/2e2d466bb30d4bea9b595f0115996a62.webp\" alt=\"XLPPI vs. XLAUI\" class=\"wp-image-3340\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e2d466bb30d4bea9b595f0115996a62.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e2d466bb30d4bea9b595f0115996a62-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e2d466bb30d4bea9b595f0115996a62-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e2d466bb30d4bea9b595f0115996a62-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e2d466bb30d4bea9b595f0115996a62-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dans les syst\u00e8mes Ethernet haute vitesse, les interfaces \u00e9lectriques d\u00e9terminent comment les donn\u00e9es circulent entre un appareil h\u00f4te et un transpondeur optique. Deux interfaces largement r\u00e9f\u00e9renc\u00e9es dans les architectures de r\u00e9seau 40G et 100G sont <strong>XLPPI<\/strong> and <strong>XLAUI<\/strong>. Bien qu'elles puissent sembler similaires en surface\u2014toutes deux d\u00e9finissant une signalisation \u00e9lectrique multi-lane\u2014elles servent <strong>des objectifs diff\u00e9rents<\/strong>, proviennent de <strong>diff\u00e9rentes organisations de normes<\/strong>, et prennent en charge <strong>diff\u00e9rentes g\u00e9n\u00e9rations de performances<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cet article fournit une comparaison structur\u00e9e et autoritaire de <strong>XLPPI vs. XLAUI<\/strong>, clarifiant la fa\u00e7on dont chaque interface s'int\u00e8gre aux \u00e9cosyst\u00e8mes modernes de modules optiques, notamment <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">QSFP+<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\">QSFP28<\/a>, and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">QSFP56<\/a> les modules largement d\u00e9ploy\u00e9s dans les centres de donn\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Les fondements : IEEE 802.3ba et l'architecture 40G<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"721\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054.webp\" alt=\"IEEE 802.3ba standard\" class=\"wp-image-3341\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054-300x180.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054-1024x615.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054-768x461.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3426d25714404c1993f09e9f21abe054-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Avant d'aborder les diff\u00e9rences, nous devons comprendre le terrain commun. XLAUI et XLPPI sont tous deux d\u00e9finis dans la norme <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/what-is-ieee-802-3ba-standard\/\"><strong>IEEE 802.3ba<\/strong> pour<\/a> l'Ethernet 40 Gigabit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le \u201c XL \u201d dans les deux acronymes repr\u00e9sente le chiffre romain pour 40. Les deux interfaces utilisent une <strong>architecture parall\u00e8le \u00e0 4 voies<\/strong>, o\u00f9 chaque voie fonctionne \u00e0 <strong>10,3125 Gbps<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>D\u00e9bit total :<\/strong> 41,25 Gbps (y compris le surcro\u00eet de codage 64b\/66b).<\/p><\/li><li><p><strong>D\u00e9bit de donn\u00e9es effectif :<\/strong> 40 Gbps.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cependant, c'est au niveau de leur positionnement dans la hi\u00e9rarchie de la couche physique (PHY) OSI que leurs chemins divergent.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Qu'est-ce que XLAUI ? (Interface d'unit\u00e9 d'attachement 40G)<\/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\/cd32dba2684e4869a0a76d8a1ab143eb.webp\" alt=\"What Is XLAUI? (40G Attachment Unit Interface)\" class=\"wp-image-3342\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd32dba2684e4869a0a76d8a1ab143eb.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd32dba2684e4869a0a76d8a1ab143eb-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd32dba2684e4869a0a76d8a1ab143eb-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd32dba2684e4869a0a76d8a1ab143eb-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd32dba2684e4869a0a76d8a1ab143eb-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/xlaui-10-lane-attachment-unit-interface-ethernet-explained\/\"><strong>XLAUI (40G Attachment Unit Interface)<\/strong><\/a> est une interface \u00e9lectrique d\u00e9finie par l'IEEE introduite dans <strong>IEEE 802.3ba<\/strong> for <strong>l'Ethernet 40 Gigabit (40GbE)<\/strong>. Elle fonctionne en utilisant :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>4 voies \u00e9lectriques<\/strong><\/p><\/li><li><p><strong>10,3125 Gbps par voie<\/strong><\/p><\/li><li><p><strong>Codage de ligne 64B\/66B<\/strong><\/p><\/li><li><p><strong>Signalisation NRZ<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 Objectif de XLAUI dans l'Ethernet 40G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XLAUI agit comme un lien \u00e9lectrique interne entre :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>MAC \u21c6 PHY<\/strong><\/p><\/li><li><p><strong>MAC \u21c6 PMA\/PMD<\/strong><\/p><\/li><li><p><strong>PHY \u21c6 moteur optique interne (dans les plateformes \u00e0 optique fixe)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Elle n'est pas directement utilis\u00e9e \u00e0 l'interface du module enfichable. Au lieu de cela, XLAUI fait partie du chemin de signal interne des commutateurs, routeurs et cartes r\u00e9seau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 O\u00f9 XLAUI est utilis\u00e9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XLAUI est principalement associ\u00e9 \u00e0 :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\"><strong>40GBASE-SR4<\/strong><\/a><strong> (fibre MPO-12)<\/strong><\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\"><strong>Une des principales avantages du QSFP+ est sa capacit\u00e9 \u00e0 d\u00e9bordner en plusieurs liens de faible vitesse :<\/strong><\/a><strong> (4\u00d710G \u03bb WDM)<\/strong><\/p><\/li><li><p><strong>40GBASE-CR4 (c\u00e2bles DAC)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bien que ces modules utilisent quatre voies 10G, l'interface XLAUI est g\u00e9n\u00e9ralement impl\u00e9ment\u00e9e <strong>\u00e0 l'int\u00e9rieur de l'h\u00f4te<\/strong>, et non au connecteur QSFP+.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Qu'est-ce que XLPPI ? (Interface parall\u00e8le \u00e0 faible puissance\/tension \u00e9tendue)<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd.webp\" alt=\"What Is XLPPI? \" class=\"wp-image-3343\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9cd1ef29cc8048e184bfce71116e12dd-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/xlppi-electrical-interface-in-40g-qsfp-plus-modules-explained\/\"><strong>XLPPI <\/strong><\/a><strong>(Interface parall\u00e8le \u00e0 faible puissance\/tension \u00e9tendue)<\/strong> est une interface \u00e9lectrique d\u00e9finie par l'MSA utilis\u00e9e entre :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u00f4te PHY\/ASIC \u21c6 Modules optiques pluggables de la famille QSFP<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Contrairement \u00e0 XLAUI (limit\u00e9 \u00e0 40G), XLPPI couvre <strong>plusieurs g\u00e9n\u00e9rations d'Ethernet<\/strong> et plusieurs facteurs de forme QSFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Vitesses et modulation prises en charge<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XLPPI prend en charge :<\/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=\"width: 111px;\"\/><col style=\"width: 152px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>G\u00e9n\u00e9ration Ethernet<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Type de module<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>Voies<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>D\u00e9bit par voie<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Modulation<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>40G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\">QSFP+<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>10G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>100G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491587.htm\">QSFP28<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>200G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">QSFP56<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>4<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>50G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>400G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">QSFP-DD<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>8<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>50G PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>800G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>QSFP-DD800<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"111\"><p>8<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"152\"><p>100 G PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Objectif de XLPPI<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XLPPI garantit :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Signalisation parall\u00e8le \u00e0 basse tension, basse consommation<\/p><\/li><li><p>Connectivit\u00e9 \u00e9lectrique haute vitesse fiable entre h\u00f4te et module<\/p><\/li><li><p>Compatibilit\u00e9 \u00e0 travers toutes les g\u00e9n\u00e9rations QSFP<\/p><\/li><li><p>Fonctionnement stable sur des pistes PCB courtes avec des exigences strictes d'int\u00e9grit\u00e9 du signal (SI)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cela fait de XLPPI l'interface \u00e9lectrique dominante derri\u00e8re les optiques pluggables modernes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >XLPPI vs. XLAUI \u2014 Diff\u00e9rences cl\u00e9s<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7.webp\" alt=\"XLPPI vs. XLAUI\" class=\"wp-image-3344\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9302b83d121c4c5c9a0967b7511658c7-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Les deux interfaces fonctionnent dans diff\u00e9rentes parties de l'architecture Ethernet et servent diff\u00e9rents objectifs de conception.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Organismes de normes diff\u00e9rents<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 168px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"168\"><p>Interface<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>D\u00e9fini par<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Port\u00e9e principale<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"168\"><p><strong>XLAUI<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/what-is-ieee-802-3ba-standard\/\">IEEE 802.3ba<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Interface interne MAC \u21c6 PHY<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"168\"><p><strong>XLPPI<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>QSFP\/QSFP-DD MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u00f4te \u21c6 Module optique pluggable<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">XLPPI est \u00e9troitement li\u00e9 \u00e0 la famille QSFP, tandis que XLAUI est li\u00e9 aux couches logiques internes de l'Ethernet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Couches d'application diff\u00e9rentes<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Couche<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/xlaui-10-lane-attachment-unit-interface-ethernet-explained\/\">XLAUI<\/a><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/maximizing-network-performance-with-xlppi-electrical-interface\/\">XLPPI<\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Emplacement de l'interface<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u00c0 l'int\u00e9rieur du commutateur\/routeur<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Au connecteur du module<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Utilisateurs<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MAC, PHY, PMA\/PMD<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>ASIC\/PHY \u21c6 Module QSFP<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Exposition aux ing\u00e9nieurs mat\u00e9riels<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Conception silicium interne<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Conception PCB pour transceivers pluggables<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Utilisation dans les optiques pluggables<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Indirecte<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Directe<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Vitesses prises en charge diff\u00e9rentes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XLAUI est fix\u00e9 \u00e0 :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>4 \u00d7 10,3125 Gbps (40G)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">XLPPI s'adapte de <strong>40G \u2192 800G<\/strong>, selon le facteur de forme du module et la g\u00e9n\u00e9ration SerDes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Technologies de signalisation<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 211px;\"\/><col style=\"width: 221px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"211\"><p>Fonctionnalit\u00e9<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>XLAUI<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>XLPPI<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"211\"><p>Signalisation<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>NRZ<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/what-is-the-difference-between-nrz-and-pam4\/\">NRZ + PAM4<\/a><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"211\"><p>Tension<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>Norme<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tension faible \/ optimis\u00e9e \u00e9nergie<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"211\"><p>Optimisation SI<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>H\u00e9ritage<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Avanc\u00e9e, sp\u00e9cifique QSFP<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"211\"><p>Adaptabilit\u00e9 future<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"221\"><p>Non (40G uniquement)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Oui (40G\u2013800G)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >Pourquoi les modules QSFP modernes utilisent XLPPI au lieu de XLAUI<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd.webp\" alt=\"QSFP Modules\" class=\"wp-image-3345\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/399a4d95a67d409e804dd80bb6e79bbd-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Parce que XLPPI :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Supporte <strong>modules interchangeables \u00e0 chaud<\/strong><\/p><\/li><li><p>Optimise <strong>consommation d'\u00e9nergie<br><\/strong><\/p><\/li><li><p>Maintient <strong>signal<\/strong> \u00e0 des vitesses plus \u00e9lev\u00e9es<\/p><\/li><li><p>S'adapte \u00e0 <strong>transmission PAM4<\/strong> requise par 200G\/400G\/800G<\/p><\/li><li><p>Correspond aux contraintes m\u00e9caniques et \u00e9lectriques des connecteurs QSFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Toutes les optiques pluggables modernes\u2014<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a>\/<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">QSFP+<\/a>\/<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491587.htm\">QSFP28<\/a>,<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\"> QSFP56<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">QSFP-DD<\/a>\u2014utilisent <strong>Interfaces \u00e0 basse tension d\u00e9finis par MSA<\/strong>, y compris XLPPI.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Pertinence des cas d'utilisation pour les clients LINK-PP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les clients s\u00e9lectionnant des modules optiques haute vitesse aupr\u00e8s de <a target=\"_blank\" rel=\"\" href=\"https:\/\/l-p.com\"><strong>LIEN-PP<\/strong><\/a>, comprendre XLPPI et XLAUI aide \u00e0 clarifier :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Pourquoi <strong>Les modules QSFP+ et QSFP28 s'appuient sur XLPPI<\/strong><\/p><\/li><li><p>Comment les interfaces \u00e9lectriques affectent <strong>l'interop\u00e9rabilit\u00e9 des modules<\/strong><\/p><\/li><li><p>Quels types de modules prennent en charge <strong>les d\u00e9bits de voie de 10G, 25G, 50G ou 100G<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >XLPPI vs. XLAUI \u2014 Tableau r\u00e9capitulatif<\/h2>\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>Cat\u00e9gorie<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/xlppi-electrical-interface-in-40g-qsfp-plus-modules-explained\/\"><strong>XLPPI<\/strong><\/a><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/xlaui-10-lane-attachment-unit-interface-ethernet-explained\/\"><strong>XLAUI<\/strong><\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Standards<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IEEE<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>G\u00e9n\u00e9rations Ethernet<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40G\u2013800G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40G uniquement<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Vitesses de voie<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10G \/ 25G \/ 50G \/ 100G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Modulation<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ &amp; PAM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>NRZ<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Emplacement de l'interface<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u00f4te \u21c6 Module enfichable<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MAC \u21c6 PHY (interne)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Utilis\u00e9 dans<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\">QSFP+<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491587.htm\">QSFP28<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\">QSFP56<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472016.htm\">QSFP-DD<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Silicium interne<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Extensibilit\u00e9 future<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>High<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Aucune<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >R\u00e9flexions finales<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">XLPPI et XLAUI sont tous deux des composants critiques de l'architecture \u00e9lectrique d'Ethernet, mais ils r\u00e9pondent \u00e0 des exigences fondamentalement diff\u00e9rentes. <strong>XLPPI<\/strong> est l'interface derri\u00e8re les transceivers optiques QSFP modernes, permettant un r\u00e9seau \u00e9volutif, \u00e9conome en \u00e9nergie et haute densit\u00e9 de 40G \u00e0 800G. <strong>XLAUI<\/strong>, quant \u00e0 lui, reste une interface IEEE importante dans la logique interne de l'Ethernet 40G mais n'est pas utilis\u00e9e au connecteur du module enfichable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comprendre ces diff\u00e9rences aide les ing\u00e9nieurs r\u00e9seau \u00e0 choisir le bon mat\u00e9riel et aide les organisations \u00e0 assurer la stabilit\u00e9 et la compatibilit\u00e9 future de leur infrastructure optique.<\/p>","protected":false},"excerpt":{"rendered":"<p>Comprenez les diff\u00e9rences cl\u00e9s entre les interfaces \u00e9lectriques XLPPI et XLAUI, leur fonctionnement dans les syst\u00e8mes Ethernet 40G\/100G, et quelle interface utilisent les modules QSFP modernes.<\/p>","protected":false},"author":1,"featured_media":3346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[18,26],"class_list":["post-3347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-40g-qsfp-transceivers","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/3347","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=3347"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/3347\/revisions"}],"predecessor-version":[{"id":10781,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/3347\/revisions\/10781"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media\/3346"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media?parent=3347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/categories?post=3347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/tags?post=3347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}