{"id":1531,"date":"2025-06-25T17:40:28","date_gmt":"2025-06-25T16:40:28","guid":{"rendered":"https:\/\/workboot.fr\/ciela\/?page_id=1531"},"modified":"2025-06-25T17:45:41","modified_gmt":"2025-06-25T16:45:41","slug":"ip-internet-protocole","status":"publish","type":"page","link":"https:\/\/workboot.fr\/ciela\/ip-internet-protocole\/","title":{"rendered":"IP Internet Protocole V4\/V6"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/sites.google.com\/view\/snir1\/cours\/r%C3%A9seau\/ipv4\">IPV4<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">4 octets&nbsp; (2^32 = 4294967296 , 4 294 967 296&nbsp; environ <mark style=\"background-color:rgba(0, 0, 0, 0);color:#cf2e2e\" class=\"has-inline-color\">4 Milliards d&rsquo;adresses<\/mark>)&nbsp; en 2020 il y aurait environ 8 Milliards d&rsquo;humains sur terre et 0 sur Mars . Il est donc \u00e9vident que l&rsquo;ip V4 risque de dispara\u00eetre, pour l&rsquo;instant l&rsquo;ip V4 reste fonctionnel et peut coexister avec l&rsquo;ip V6 .<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/sites.google.com\/view\/snir1\/cours\/r%C3%A9seau\/ipv6\">IPV6<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">16 octets ,2<sup>128<\/sup>&nbsp;\u2248 3,4 \u00d7 10<sup>38<\/sup>&nbsp;= 340<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Sextillion\" target=\"_blank\" rel=\"noreferrer noopener\">&nbsp;<strong>sextillions<\/strong><\/a><strong>&nbsp;<\/strong>d&rsquo;adresses IPv6<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">exemple IPV6: fe80::d000:1754:e8af:4fce&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">exemple IPV4: 172.22.1.3&nbsp; adresse de r\u00e9seau locale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Adresse_IP\" target=\"_blank\" rel=\"noreferrer noopener\">Wiki<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019IPv4 reste tr\u00e8s utilis\u00e9 aujourd\u2019hui malgr\u00e9 l\u2019existence de l\u2019IPv6 pour plusieurs raisons techniques, \u00e9conomiques et historiques. Voici les principales :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udf10 1. <strong>Compatibilit\u00e9 et Infrastructure existante<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>La majorit\u00e9 de l\u2019Internet repose encore sur l\u2019IPv4<\/strong> : des millions de serveurs, routeurs, logiciels, syst\u00e8mes d\u2019exploitation ont \u00e9t\u00e9 con\u00e7us avec IPv4. Le changer partout co\u00fbte cher et prend du temps.<\/li>\n\n\n\n<li><strong>L\u2019IPv6 n\u2019est pas compatible nativement avec l\u2019IPv4<\/strong> : il faut mettre en place des m\u00e9canismes comme le <em>dual stack<\/em> (utiliser IPv4 et IPv6 en parall\u00e8le), la traduction d\u2019adresses (<em>NAT64<\/em>, <em>DNS64<\/em>), ce qui complique le d\u00e9ploiement.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcb0 2. <strong>Co\u00fbt et complexit\u00e9 du passage \u00e0 IPv6<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La mise \u00e0 jour des \u00e9quipements r\u00e9seaux, des logiciels et des configurations demande du <strong>temps, des comp\u00e9tences et de l\u2019argent<\/strong>.<\/li>\n\n\n\n<li>Beaucoup d\u2019entreprises ou de fournisseurs d\u2019acc\u00e8s \u00e0 Internet (FAI) pr\u00e9f\u00e8rent retarder cette transition aussi longtemps que possible.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcf6 3. <strong>Prolongement artificiel de la vie de l\u2019IPv4<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Des technologies comme le <strong>NAT (Network Address Translation)<\/strong> permettent \u00e0 plusieurs appareils de partager une seule adresse IPv4 publique, ce qui retarde l\u2019\u00e9puisement des adresses IPv4.<\/li>\n\n\n\n<li>L\u2019utilisation de <strong>VPN, proxies, CGNAT<\/strong> (Carrier-Grade NAT) a permis d\u2019\u00e9viter le basculement imm\u00e9diat vers l\u2019IPv6.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc9 4. <strong>Manque de pression \u00e9conomique ou r\u00e9glementaire<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le syst\u00e8me IPv4 fonctionne encore \u00ab\u00a0bien assez\u00a0\u00bb pour la majorit\u00e9 des cas d\u2019usage.<\/li>\n\n\n\n<li>Peu de pays ou d\u2019organismes imposent r\u00e9ellement l\u2019usage de l\u2019IPv6.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc8 5. <strong>Le d\u00e9ploiement d\u2019IPv6 progresse lentement<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u2019IPv6 est en croissance constante, en particulier dans certains pays (Inde, Allemagne, Belgique, \u00c9tats-Unis\u2026).<\/li>\n\n\n\n<li>De plus en plus de FAI et d\u2019appareils sont compatibles, mais <strong>le d\u00e9ploiement complet prendra encore plusieurs ann\u00e9es<\/strong>, car IPv4 est profond\u00e9ment enracin\u00e9.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">En r\u00e9sum\u00e9 :<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>IPv6 est l\u2019avenir, mais IPv4 reste le pr\u00e9sent.<\/strong><br>Tant que l\u2019ensemble de l\u2019\u00e9cosyst\u00e8me Internet ne bascule pas massivement vers IPv6, l\u2019IPv4 restera n\u00e9cessaire, au moins en parall\u00e8le.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>4 octets&nbsp; (2^32 = 4294967296 , 4 294 967 296&nbsp; environ 4 Milliards d&rsquo;adresses)&nbsp; en 2020 il y aurait environ 8 Milliards d&rsquo;humains sur terre et 0 sur Mars . [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-1531","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IP Internet Protocole V4\/V6 - workboot<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/workboot.fr\/ciela\/ip-internet-protocole\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IP Internet Protocole V4\/V6 - workboot\" \/>\n<meta property=\"og:description\" content=\"4 octets&nbsp; (2^32 = 4294967296 , 4 294 967 296&nbsp; environ 4 Milliards d&rsquo;adresses)&nbsp; en 2020 il y aurait environ 8 Milliards d&rsquo;humains sur terre et 0 sur Mars . 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