{"id":33410,"date":"2019-10-07T11:48:47","date_gmt":"2019-10-07T08:18:47","guid":{"rendered":"https:\/\/airoserver.com\/?p=1525"},"modified":"2022-04-04T09:22:27","modified_gmt":"2022-04-04T04:52:27","slug":"ip-address-classes","status":"publish","type":"post","link":"https:\/\/airoserver.com\/fr\/dedie\/classes-dadresses-ip\/","title":{"rendered":"Classes d'adresses IP"},"content":{"rendered":"<p>Dans un article pr\u00e9c\u00e9dent, nous avons expliqu\u00e9 ce qu'est la <a href=\"https:\/\/airoserver.com\/fr\/blog\/what-is-ip\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"IP (s&#039;ouvre dans un nouvel onglet)\">IP<\/a> et <a href=\"https:\/\/airoserver.com\/fr\/dedie\/regions-ip\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"R\u00e9gions IP (s&#039;ouvre dans un nouvel onglet)\">R\u00e9gions IP<\/a>. Dans ce billet, nous allons expliquer les classes d'adresses IP.<\/p>\r\n\r\n\r\n\r\n<p>Comme nous l'avons expliqu\u00e9 pr\u00e9c\u00e9demment \u00e0 propos de la structure des IP, toutes les adresses IPv4 comportent 4 octets. C'est en fonction de ce fait que sont d\u00e9finis l'ID du r\u00e9seau et l'ID de l'h\u00f4te.<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><strong>ID du r\u00e9seau<\/strong><\/h4>\r\n\r\n\r\n\r\n<p>Tous les appareils re\u00e7oivent une IP lorsqu'ils veulent se connecter \u00e0 un r\u00e9seau. Imaginons donc que vous ayez deux appareils et leur IP. Comment savoir s'ils font partie du m\u00eame r\u00e9seau ou non ? L'ID du r\u00e9seau.<\/p>\r\n\r\n\r\n\r\n<p>L'ID du r\u00e9seau correspond aux octets fixes de vos IP. Par exemple : supposons que 172.16.2.1 et 172.16.3.1 soient deux IP. Les deux premiers octets sont identiques et fixes pour les deux IP. Ainsi, ces deux IP se trouvent dans le m\u00eame <a href=\"https:\/\/en.wikipedia.org\/wiki\/Computer_network\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"r\u00e9seau (s&#039;ouvre dans un nouvel onglet)\">r\u00e9seau<\/a> et leur ID r\u00e9seau est 172.16.<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><strong>ID de l'h\u00f4te<\/strong><\/h4>\r\n\r\n\r\n\r\n<p>L'ID de l'h\u00f4te correspond aux octets variables des IP. Cela signifie qu'en consid\u00e9rant les exemples d'IP ci-dessus (172.16.3.1 , 172.16.2.1), 3.1 et 2.1 sont les ID d'h\u00f4te de nos IP.<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><strong>Classes IPv4 :<\/strong><\/h4>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter\"><img decoding=\"async\" class=\"wp-image-1526\" src=\"https:\/\/airoserver.com\/wp-content\/uploads\/2019\/10\/images_text_subnet.png\" alt=\"Classes IPv4\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p><strong>Classe A<\/strong>classe IP : le premier octet de cette classe IP est fixe. Cela signifie que le premier octet est l'ID du r\u00e9seau et que tous les autres octets sont l'ID de l'h\u00f4te. La plage d'octets pour cette classe est de 1 \u00e0 126.<\/p>\r\n\r\n\r\n\r\n<p><strong>Classe B :<\/strong> les deux premiers octets de cette classe d'IP sont fixes. Cela signifie que les deux premiers octets correspondent \u00e0 l'ID du r\u00e9seau et les deux autres \u00e0 l'ID de l'h\u00f4te. La plage d'octets pour cette classe est comprise entre 128 et 191.<\/p>\r\n\r\n\r\n\r\n<p><strong>Classe C :<\/strong> les trois premiers octets de cette classe d'IP sont fixes. Cela signifie que les trois premiers octets correspondent \u00e0 l'ID du r\u00e9seau et que le dernier octet correspond \u00e0 l'ID de l'h\u00f4te. La plage d'octets pour cette classe est comprise entre 192 et 223.<\/p>\r\n\r\n\r\n\r\n<p><strong>Classe D :<\/strong> Cette classe d'IP est une classe sp\u00e9ciale que nous utilisons pour la multidiffusion. La multidiffusion est utilis\u00e9e lorsque nous voulons envoyer des paquets sp\u00e9cifiques \u00e0 des stations sp\u00e9cifiques. La plage d'octets pour cette classe est comprise entre 224 et 239.<\/p>\r\n\r\n\r\n\r\n<p>Si vous avez appr\u00e9ci\u00e9 cet article, visitez notre site web <a href=\"https:\/\/airoserver.com\/fr\/blog\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"blog (s&#039;ouvre dans un nouvel onglet)\">blog<\/a> pour en savoir plus.<\/p>","protected":false},"excerpt":{"rendered":"<p>In an earlier post, we&#8217;ve explained about IP and IP Regions. In this post, we are going to explain about IP Address Classes. As we&#8217;ve explained about IPs&#8217; structure before,all IPv4 addresses have 4 octets. According to this fact, Network ID and Host ID are defined. Network ID All devices get an IP when they [&hellip;]<\/p>","protected":false},"author":5,"featured_media":33970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[179,176,182,187,178],"tags":[85,184],"class_list":["post-33410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-airoserver","category-dedicated","category-shared-hosting","category-uncategorized","category-airo-vps","tag-airoserver","tag-network"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>IP Address Classes<\/title>\n<meta name=\"description\" content=\"Every IP address contains Host ID and Network ID. The fixed octets of an IP are called Network ID and the others are Host ID.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/airoserver.com\/fr\/dedie\/classes-dadresses-ip\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IP Address Classes\" \/>\n<meta property=\"og:description\" content=\"Every IP address contains Host ID and Network ID. 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