{"id":5115,"date":"2025-09-11T00:00:00","date_gmt":"2025-09-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/what-is-ieee-802-3ba-standard\/"},"modified":"2026-06-22T09:06:00","modified_gmt":"2026-06-22T09:06:00","slug":"what-is-ieee-802-3ba-standard","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/it\/knowledge-center\/what-is-ieee-802-3ba-standard","title":{"rendered":"Comprendere lo standard IEEE 802.3ba: spiegazione di 40GbE e 100GbE"},"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\/c07817e45dec4d99923b86dbda116251.webp\" alt=\" IEEE 802.3ba Standard\" class=\"wp-image-5112\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c07817e45dec4d99923b86dbda116251.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c07817e45dec4d99923b86dbda116251-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c07817e45dec4d99923b86dbda116251-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c07817e45dec4d99923b86dbda116251-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c07817e45dec4d99923b86dbda116251-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">1. Introduction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019emendamento IEEE 802.3ba, ratificato il <strong>17 giugno 2010<\/strong>, ha introdotto due velocit\u00e0 dati fondamentali\u2014<strong>40 Gbps e 100 Gbps<\/strong>\u2014all\u2019interno di uno standard Ethernet unificato. \u00c8 emerso in risposta alla rapida crescita delle esigenze di aggregazione nei data center e di rete dorsale, che superavano la capacit\u00e0 delle reti 10GbE.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Architettura standard e principi di progettazione<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Architettura unificata<\/strong>: mantiene le caratteristiche fondamentali di Ethernet\u2014identico formato della trama, funzionamento full-duplex, utilizzo del livello MAC esistente per garantire la compatibilit\u00e0 con le versioni precedenti.<\/p><\/li>\n\n\n\n<li><p><strong>Livelli fisici (PHY)<\/strong>: definisce una gamma di opzioni per diversi tipi di supporto\u2014<a href=\"https:\/\/resourceslp.szlogic.cn\/it\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\" target=\"_blank\" rel=\"\">fibra monomodale, fibra multimodale<\/a>, cavo rame twinax e collegamenti su backplane.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Supporto PHY per i vari supporti fisici e portata<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">I principali tipi PHY supportati e le relative portate includono:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 213px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Tipo di supporto<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>PHY 40GbE (esempi)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>PHY 100GbE (esempi)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Backplane<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40GBASE-KR4 (\u2265 1 m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2014<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Cavo rame twinax<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40GBASE-CR4 (\u2264 7 m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBASE-CR10 (\u2264 7 m)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Fibra multimodale (OM3)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40GBASE-SR4 (\u2265 100 m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBASE-SR10 (\u2265 100 m)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Fibra multimodale (OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>(Fino a \u2265 150 m)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>(Fino a \u2265 150 m)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"213\"><p>Copper Direct Attach (DAC)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482487.htm\">40GBASE-LR4<br><\/a> (\u2265 10 km)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488452.htm\">100GBASE-LR4<br><\/a> (\u2265 10 km); <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482592.htm\">100GBASE-ER4<br><\/a> (\u2265 40 km) <\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Queste opzioni PHY garantiscono una distribuzione versatile nei data center, nelle reti aziendali e nelle dorsali dei fornitori di servizi.<\/p>\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 for 40GbE &amp; 100GbE\" 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<h2 class=\"wp-block-heading\">Distribuzione dei canali dati e codifica<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lo standard utilizza una struttura a canali multipli:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>40GbE<br><\/strong>: utilizza 4 canali paralleli.<\/p><\/li>\n\n\n\n<li><p><strong>100GbE<\/strong>: impiega fino a 10 canali.<br>La codifica utilizza la <strong>codifica a linea 64b\/66b<\/strong> (BASE-R), con il sottolivello PCS che distribuisce i dati sui canali con allineamento per la correzione dello skew.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Perch\u00e9 \u00e8 importante: impatto e casi d\u2019uso<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Larghezza di banda scalabile<\/strong>: offre incrementi significativi rispetto a 10GbE, ideale per applicazioni ad alta intensit\u00e0 di dati e infrastrutture cloud.<\/p><\/li>\n\n\n\n<li><p><strong>Compatibilit\u00e0 industriale<\/strong>: si allinea agli ecosistemi Ethernet esistenti, consentendo aggiornamenti agevoli.<\/p><\/li>\n\n\n\n<li><p><strong>Distribuzione modulare<\/strong>: supporta diversi supporti fisici e connettori, facilitando ambienti eterogenei e progetti hardware diversificati.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Moduli 40G QSFP+ LINK-PP<\/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\/106002b8f3c14eed8fe77adaaeb1e16d-1024x608.webp\" alt=\"LINK-PP\u2019s 40G QSFP+ Modules\" class=\"wp-image-5113\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/106002b8f3c14eed8fe77adaaeb1e16d-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/106002b8f3c14eed8fe77adaaeb1e16d-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/106002b8f3c14eed8fe77adaaeb1e16d-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/106002b8f3c14eed8fe77adaaeb1e16d-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/106002b8f3c14eed8fe77adaaeb1e16d.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LINK-PP fornisce <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">moduli ottici 40G QSFP+<\/a> progettati per soddisfare le specifiche IEEE 802.3ba. Sebbene la pagina prodotto non specifichi metriche tecniche esatte, i moduli QSFP+ supportano intrinsecamente standard come 40GBASE-SR4, 40GBASE-LR4 e 40GBASE-ER4\u2014PHY comuni definiti da IEEE 802.3ba. Questi moduli si integrano quindi perfettamente nelle implementazioni di data center e reti ad alta densit\u00e0 basate su 40GbE, rappresentando una soluzione ideale per ambienti che richiedono affidabilit\u00e0, compatibilit\u00e0 e prestazioni.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusione<\/h2>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">The <strong>IEEE 802.3ba<\/strong>, introdotto nel <strong>2010<\/strong>, ha segnato una svolta fondamentale verso <strong>40GbE e 100GbE<\/strong>, offrendo Ethernet flessibile e ad alta larghezza di banda su diversi tipi di supporto fisico. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm?ca=1455&amp;cv=8050\">I moduli 40G QSFP+ LINK-PP<\/a> forniscono un\u2019hardware pratico e conforme agli standard, allineato a questa evoluzione\u2014ideale per infrastrutture di rete orientate al futuro.<\/p>","protected":false},"excerpt":{"rendered":"<p>Explore the IEEE 802.3ba standard\u2014defining both 40GbE &#038; 100GbE\u2014its technical design and applications, plus how LINK-PP\u2019s 40G QSFP+ modules align perfectly with this high-speed Ethernet evolution.<\/p>","protected":false},"author":1,"featured_media":5114,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5115","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\/it\/wp-json\/wp\/v2\/posts\/5115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/comments?post=5115"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/posts\/5115\/revisions"}],"predecessor-version":[{"id":11376,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/posts\/5115\/revisions\/11376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/media\/5114"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/media?parent=5115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/categories?post=5115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/it\/wp-json\/wp\/v2\/tags?post=5115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}