{"id":1505,"date":"2017-08-24T15:53:22","date_gmt":"2017-08-24T19:53:22","guid":{"rendered":"https:\/\/www.precisionot.com\/?p=1505"},"modified":"2021-08-28T18:00:28","modified_gmt":"2021-08-28T22:00:28","slug":"evolution-100-g-lr4-normes-ethernet","status":"publish","type":"post","link":"https:\/\/www.precisionot.com\/fr\/evolution-100-g-lr4-ethernet-standards\/","title":{"rendered":"L&#039;\u00e9volution des normes Ethernet 100G LR4"},"content":{"rendered":"<p class=\"wp-block-paragraph\">La technologie 100 Gigabit Ethernet (GbE), qui transmet des trames Ethernet \u00e0 un d\u00e9bit de 100 Gb\/s, a d&#039;abord \u00e9t\u00e9 d\u00e9finie par la norme IEEE 802.3ba-2010 et plus tard par les normes 802.3bg-2011, 802.3bj-2014 et 802.3bm -Normes 2015. La premi\u00e8re sp\u00e9cification 100 G pour 10 km, <a href=\"https:\/\/www.precisionot.com\/fr\/produit\/pre-qsfp28-lr4\/\">100GBASE-LR4<\/a>, introduit en juin 2010, ne r\u00e9pondait pas aux besoins de toutes les applications, stimulant les progr\u00e8s techniques pour une op\u00e9rabilit\u00e9 et une rentabilit\u00e9 am\u00e9lior\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La premi\u00e8re g\u00e9n\u00e9ration de <a href=\"https:\/\/www.precisionot.com\/fr\/categorie-produit\/100g\/\">Normes 100G<\/a> utilis\u00e9 la voie 10 x 10 G dans la signalisation \u00e9lectrique. La g\u00e9n\u00e9ration suivante a appliqu\u00e9 une signalisation 4 x 10 G pour l&#039;\u00e9lectricit\u00e9 et les m\u00e9dias. En termes de distances de transmission, diff\u00e9rentes normes prennent en charge diff\u00e9rentes distances de transmission. Les facteurs de forme des packages ont \u00e9galement consid\u00e9rablement chang\u00e9 au fil du temps.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Selon John D&#039;Ambrosia, pr\u00e9sident de l&#039;Ethernet Alliance et ing\u00e9nieur principal chez Huawei, les impl\u00e9mentations initiales utilisaient le facteur de forme CFP (C-form factor pluggable), qui \u00e9tait reconnu comme \u00e9tant trop encombrant pour les applications de centre de donn\u00e9es haute densit\u00e9. Aujourd&#039;hui, <a href=\"https:\/\/www.precisionot.com\/fr\/categorie-produit\/100g\/100g-qsfp28\/\">QSFP<\/a> (Quad Small Form-factor Pluggable), un \u00e9metteur-r\u00e9cepteur compact enfichable \u00e0 chaud utilis\u00e9 pour les applications de communication de donn\u00e9es, est le facteur de forme dominant pour <a href=\"https:\/\/www.precisionot.com\/fr\/produit\/pre-qsfp28-lr4\/\">100GBASE-LR4<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Des r\u00e9ductions de largeur d&#039;interface \u00e9lectrique sont \u00e9galement apparues. L&#039;interface \u00e9lectrique originale de 10 x 10 Gb\/s a \u00e9t\u00e9 r\u00e9duite \u00e0 quatre voies de 25 G chacune pour r\u00e9aliser une interface \u00e9lectrique de 4 x 25 Gb\/s. D&#039;Ambrosia note que le groupe de travail Ethernet IEEE 802.3 discute actuellement d&#039;une activit\u00e9 qui pourrait r\u00e9duire cela \u00e0 une seule voie de 100 Gb\/s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une autre transformation est l&#039;introduction de solutions de fibre monomode \u00e0 plus courte port\u00e9e, un changement qui d\u00e9coule des r\u00e9ductions de co\u00fbts et de puissance. L&#039;approche PSM-4 cible 1 km en utilisant quatre fibres optiques monomodes parall\u00e8les dans chaque direction. L&#039;accord multi-sources (MSA) 4 x 25\u00a0G multiplex\u00e9 par r\u00e9partition en longueur d&#039;onde grossi\u00e8re cible des port\u00e9es de 2\u00a0km \u00e0 l&#039;aide d&#039;un multiplexeur et d&#039;un d\u00e9multiplexeur optiques pour r\u00e9duire le nombre de fibres \u00e0 deux. Le d\u00e9veloppement des deux architectures s&#039;est d\u00e9roul\u00e9 en parall\u00e8le.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tandis que le <a href=\"https:\/\/www.precisionot.com\/fr\/produit\/pre-qsfp28-lr4\/\">100GBASE-LR4<\/a> la sp\u00e9cification optique ne repose pas sur la correction d&#039;erreur directe (FEC), les MSA de l&#039;industrie ont \u00e9volu\u00e9 et tirent parti de la FEC pour un co\u00fbt moindre, une plus grande port\u00e9e et une interop\u00e9rabilit\u00e9 am\u00e9lior\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Au-del\u00e0 <a href=\"https:\/\/www.precisionot.com\/fr\/produit\/pre-qsfp28-lr4\/\">100GBASE-LR4<\/a>, l&#039;IEEE formule des sp\u00e9cifications optiques pour 200GBASE-LR8 et 400GBASE-LR8 qui ciblent 200 GbE et 400 GbE et sont bas\u00e9es sur 4 x 50 Gb\/s et 8 x 50 Gb\/s respectivement. Ces nouveaux d\u00e9bits, auxquels s&#039;ajoutent 100 GbE, suscitent un int\u00e9r\u00eat consid\u00e9rable pour les solutions bas\u00e9es uniquement sur le 100 Gb\/s, tant \u00e9lectriquement qu&#039;optiquement. Les r\u00e9seaux optiques 1 x 100 Gb\/s et 4 x 100 Gb\/s sont d\u00e9j\u00e0 en cours dans IEEE 802.3, ainsi que dans les premi\u00e8res discussions sur le d\u00e9veloppement d&#039;une signalisation \u00e9lectrique \u00e0 100 Gb\/s par voie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&quot;Avec la technologie \u00e9lectrique et optique 100 Gb\/s, nous voyons l&#039;opportunit\u00e9 pour l&#039;industrie de migrer vers le &#039;Saint Graal&#039; de l&#039;optique dont l&#039;Ethernet Alliance discute depuis des ann\u00e9es : l&#039;\u00e9volution de la solution totale 100 Gb\/s s&#039;int\u00e9grant dans un facteur de forme SFP \u00bb, d\u00e9clare D&#039;Ambrosia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour plus d&#039;informations sur ce sujet ou sur tout autre sujet li\u00e9 \u00e0 l&#039;industrie, veuillez&nbsp;<a href=\"https:\/\/www.precisionot.com\/fr\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">Nous contacter<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>La technologie 100 Gigabit Ethernet (GbE), qui transmet des trames Ethernet \u00e0 un d\u00e9bit de 100 Gb\/s, a d&#039;abord \u00e9t\u00e9 d\u00e9finie par la norme IEEE 802.3ba-2010 et plus tard par les normes 802.3bg-2011, 802.3bj-2014 et 802.3bm -Normes 2015.<\/p>","protected":false},"author":33,"featured_media":1506,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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