{"id":5430,"date":"2025-08-16T00:00:00","date_gmt":"2025-08-16T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/ieee-802-3-ethernet-standard-explained\/"},"modified":"2026-06-22T09:08:51","modified_gmt":"2026-06-22T09:08:51","slug":"ieee-802-3-ethernet-standard-explained","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/ieee-802-3-ethernet-standard-explained","title":{"rendered":"Norme IEEE 802.3 Ethernet expliqu\u00e9e \u2013 R\u00f4le, applications et conformit\u00e9 du produit LINK-PP"},"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\/6d9d849b02c74d56827b46e71f2b405a.webp\" alt=\"IEEE 802.3 compliance,IEEE 802.3af, 802.3at, 802.3bt\" class=\"wp-image-5428\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d9d849b02c74d56827b46e71f2b405a.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d9d849b02c74d56827b46e71f2b405a-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d9d849b02c74d56827b46e71f2b405a-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d9d849b02c74d56827b46e71f2b405a-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d9d849b02c74d56827b46e71f2b405a-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 Introduction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Institut des ing\u00e9nieurs \u00e9lectriciens et \u00e9lectroniciens (IEEE)<\/strong> est un leader mondial dans l\u2019\u00e9laboration de normes techniques qui fa\u00e7onnent les technologies modernes. Parmi ses nombreuses contributions, <strong>IEEE 802.3<\/strong> se distingue comme la norme de r\u00e9f\u00e9rence pour Ethernet \u2014 l\u2019\u00e9pine dorsale des r\u00e9seaux filaires. Elle d\u00e9finit les couches physique et liaison de donn\u00e9es du mod\u00e8le OSI, garantissant l\u2019interop\u00e9rabilit\u00e9, la fiabilit\u00e9 et l\u2019\u00e9volutivit\u00e9 des dispositifs \u00e0 l\u2019\u00e9chelle mondiale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 Qu\u2019est-ce que l\u2019IEEE 802.3 ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Initialement publi\u00e9e en 1983, l\u2019IEEE 802.3 sp\u00e9cifie les r\u00e8gles de communication Ethernet, couvrant notamment :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Sp\u00e9cifications de la couche physique<\/strong> \u2013 types de c\u00e2bles, codage des signaux et d\u00e9bits de transmission<\/p><\/li>\n\n\n\n<li><p><strong>Protocoles de la couche liaison de donn\u00e9es<\/strong> \u2013 structuration des trames, adressage et d\u00e9tection des erreurs<\/p><\/li>\n\n\n\n<li><p><strong>Contr\u00f4le d\u2019acc\u00e8s au support (<\/strong><a href=\"https:\/\/resourceslp.szlogic.cn\/fr\/knowledge-center\/what-are-ethernet-mac-and-phy\/\" target=\"_blank\" rel=\"\"><strong>MAC<\/strong><\/a><strong>)<\/strong> \u2013 utilisant l\u2019acc\u00e8s multiple par d\u00e9tection de porteuse avec d\u00e9tection de collisions (CSMA\/CD)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Au fil du temps, l\u2019IEEE 802.3 s\u2019est d\u00e9velopp\u00e9e pour inclure des d\u00e9bits plus \u00e9lev\u00e9s (<strong>de 10 Mbit\/s \u00e0 400 Gbit\/s<\/strong>, avec des travaux en cours sur 800 Gbit\/s), le support des fibres optiques et <strong>Alimentation par Ethernet (PoE)<\/strong> des fonctionnalit\u00e9s avanc\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 Pourquoi l\u2019IEEE 802.3 est-elle essentielle ?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Compatibilit\u00e9 universelle<\/strong> \u2013 Garantit l\u2019interop\u00e9rabilit\u00e9 du mat\u00e9riel r\u00e9seau provenant de diff\u00e9rents fabricants.<\/p><\/li>\n\n\n\n<li><p><strong>\u00c9volutivit\u00e9 du d\u00e9bit<\/strong> \u2013 Couvre une large gamme de d\u00e9bits, allant de <strong>10 Mbit\/s (10BASE-T)<\/strong> and <strong>100 Mbit\/s (Ethernet rapide)<\/strong> to <strong>1 Gbit\/s, 10 Gbit\/s<\/strong>, jusqu\u2019\u00e0 <strong>400 Gbit\/s<\/strong>.<\/p><\/li>\n\n\n\n<li><p><strong>Innovation technologique<\/strong> \u2013 Int\u00e8gre des progr\u00e8s dans les c\u00e2blages, <a href=\"https:\/\/resourceslp.szlogic.cn\/fr\/glossary\/what-you-need-to-know-about-power-over-ethernet\/\" target=\"_blank\" rel=\"\">PoE<\/a> la livraison de donn\u00e9es et l\u2019efficacit\u00e9 \u00e9nerg\u00e9tique (IEEE 802.3az).<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 Structure technique de l\u2019IEEE 802.3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">MAC et format des trames<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Les trames Ethernet standard ont une <strong>longueur minimale de 64 octets<\/strong> and a <strong>et une longueur maximale de 1518 octets sans \u00e9tiquettes VLAN<\/strong>.<\/p><\/li>\n\n\n\n<li><p>Avec l\u2019\u00e9tiquetage VLAN IEEE 802.1Q, la taille maximale de trame passe \u00e0 <strong>1522 octets<\/strong>.<\/p><\/li>\n\n\n\n<li><p><em>Trames jumbo<\/em> (&gt; 9000 octets) sont sp\u00e9cifiques aux fournisseurs et ne font pas partie de la norme fondamentale IEEE 802.3.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Contr\u00f4le d\u2019acc\u00e8s au support<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Les premiers r\u00e9seaux Ethernet utilisaient CSMA\/CD pour les supports partag\u00e9s.<\/p><\/li>\n\n\n\n<li><p>L\u2019Ethernet moderne repose principalement sur des commutateurs en duplex int\u00e9gral, sans collisions.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Variantes de la couche physique<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Cuivre \u00e0 paires torsad\u00e9es<\/strong>: 10BASE-T, 100BASE-TX, 1000BASE-T, jusqu\u2019\u00e0 10GBASE-T<\/p><\/li>\n\n\n\n<li><p><strong>Fibre optique<\/strong>: multimode et monomode (p. ex. 10GBASE-SR\/LR, 100GBASE-LR4)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Normes PoE<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>3af (PoE)<\/strong> \u2013 Puissance de sortie du PSE jusqu\u2019\u00e0 <strong>15,4 W<\/strong> (l\u2019aliment\u00e9 re\u00e7oit environ 12,95 W)<\/p><\/li>\n\n\n\n<li><p><strong>3at (PoE+)<\/strong> \u2013 Puissance de sortie du PSE jusqu\u2019\u00e0 <strong>30 W<\/strong> (l\u2019aliment\u00e9 re\u00e7oit environ 25,5 W)<\/p><\/li>\n\n\n\n<li><p><strong>3bt (PoE++)<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p><em>(PoE++)<\/em>: puissance de sortie du PSE jusqu\u2019\u00e0 <strong>60 W<\/strong> (l\u2019aliment\u00e9 re\u00e7oit environ 51 W)<\/p><\/li>\n\n\n\n<li><p><em>Clients minces, terminaux POS<\/em>: puissance de sortie du PSE jusqu\u2019\u00e0 <strong>90 W<\/strong> (l\u2019aliment\u00e9 re\u00e7oit environ 71 W)<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ethernet \u00e0 efficacit\u00e9 \u00e9nerg\u00e9tique (EEE)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>IEEE <strong>3az<\/strong> (2010) r\u00e9duit la consommation d\u2019\u00e9nergie pendant les p\u00e9riodes de faible activit\u00e9 des donn\u00e9es, sans modifier l\u2019interface Ethernet.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 \u00c9volution de l\u2019IEEE 802.3 \u2013 R\u00e9sum\u00e9<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 179px;\"\/><col style=\"width: 157px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>Norme<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>Ann\u00e9e<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Fonctionnalit\u00e9 notable<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>10BASE-T<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>Ann\u00e9es 1990<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ethernet sur cuivre \u00e0 10 Mbit\/s<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>Ethernet rapide<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>1995<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100 Mbit\/s<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>1000BASE-T<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>1999<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gigabit sur cuivre<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>10GBASE-T<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2006<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10 Gbit\/s sur cuivre<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>2,5\/5GBASE-T<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2016<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u00e9bits interm\u00e9diaires sur c\u00e2bles Cat5e\/Cat6<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>40\/100GBASE<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2010+<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Fibre haute vitesse pour centres de donn\u00e9es<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>200\/400GBASE<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2018<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ethernet ultra-haute vitesse<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>Alimentation par c\u00e2ble (PoE\/PoE+\/PoE++)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2003\u20132018<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Alimentation par Ethernet<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"179\"><p>EEE (802.3az)<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>2010<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u00c9conomies d\u2019\u00e9nergie en veille<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 LINK-PP et IEEE 802.3 : compatibilit\u00e9 totale<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">LIEN-PP<\/a>, tous les connecteurs RJ45 PoE et transformateurs LAN font l\u2019objet d\u2019un contr\u00f4le qualit\u00e9 rigoureux afin de garantir <strong>une conformit\u00e9 compl\u00e8te \u00e0 la norme IEEE 802.3<\/strong>, y compris le respect pr\u00e9cis du format des trames, des contraintes temporelles et des sp\u00e9cifications de livraison d\u2019\u00e9nergie PoE.<\/p>\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\/ed04ce8541e344ee8501d7be8271ee87-1024x608.webp\" alt=\"LINK-PP &amp; IEEE 802.3: Full Compatibility\" class=\"wp-image-5429\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed04ce8541e344ee8501d7be8271ee87-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed04ce8541e344ee8501d7be8271ee87-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed04ce8541e344ee8501d7be8271ee87-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed04ce8541e344ee8501d7be8271ee87-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed04ce8541e344ee8501d7be8271ee87.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Connecteurs RJ45 PoE<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Exemples : <a href=\"https:\/\/www.link-pp.com\/products\/2611.html\" target=\"_blank\" rel=\"\">LPJG4928HENL<\/a><\/p><\/li>\n\n\n\n<li><p>Certifi\u00e9 pour <strong>10\/100\/1000 Mbit\/s<\/strong><\/p><\/li>\n\n\n\n<li><p>Respecte <strong>la norme IEEE 802.3at PoE+<\/strong> pour les caract\u00e9ristiques \u00e9lectriques.<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">RJ45 int\u00e9gr\u00e9 avec magn\u00e9tiques et transformateurs LAN<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Associe les magn\u00e9tiques de signal et le filtrage LAN dans un format compact unique.<\/p><\/li>\n\n\n\n<li><p>Prend en charge <strong>10 Mbit\/s \u2013 10 Gbit\/s<\/strong>, PoE, ma\u00eetrise des interf\u00e9rences \u00e9lectromagn\u00e9tiques (EMI) et <strong>une plage de fonctionnement de<\/strong> \u221240 \u00b0C \u00e0 +85 \u00b0C.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf10 <strong>Conclusion<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>La norme IEEE 802.3<\/strong> constitue le fondement des r\u00e9seaux Ethernet, permettant l\u2019interop\u00e9rabilit\u00e9 mondiale et l\u2019\u00e9volutivit\u00e9. En suivant strictement les sp\u00e9cifications IEEE \u2014 notamment la livraison pr\u00e9cise de puissance PoE et le format des trames \u2014 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LIEN-PP<\/strong><\/a> fournit des composants pr\u00eats \u00e0 r\u00e9pondre aux exigences actuelles et futures des r\u00e9seaux.<\/p>","protected":false},"excerpt":{"rendered":"<p>D\u00e9couvrez la norme Ethernet IEEE 802.3, son r\u00f4le dans les communications r\u00e9seau et la mani\u00e8re dont les magn\u00e9tiques PoE de LINK-PP sont conformes \u00e0 cette r\u00e9f\u00e9rence mondiale.<\/p>","protected":false},"author":1,"featured_media":5428,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22,23],"class_list":["post-5430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/5430","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=5430"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/5430\/revisions"}],"predecessor-version":[{"id":11393,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/posts\/5430\/revisions\/11393"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media\/5428"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/media?parent=5430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/categories?post=5430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/fr\/wp-json\/wp\/v2\/tags?post=5430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}