{"id":9324,"date":"2023-06-10T15:35:37","date_gmt":"2023-06-10T12:35:37","guid":{"rendered":"https:\/\/vasexperts.com\/?p=9324"},"modified":"2025-08-11T14:13:42","modified_gmt":"2025-08-11T11:13:42","slug":"how-dhcp-nak-affects-isps-business","status":"publish","type":"post","link":"https:\/\/vasexperts.com\/fr\/blog\/bng\/how-dhcp-nak-affects-isps-business\/","title":{"rendered":"Comment DHCP NAK affecte l&rsquo;activit\u00e9 de l&rsquo;op\u00e9rateur"},"content":{"rendered":"<h2>Script d\u2019autorisation DHCP<\/h2>\r\nL\u2019autorisation DHCP est utilis\u00e9e dans les BNG L2-connected IPoE. Ce terme implique une autorisation par le message DHCP Discover de l\u2019abonn\u00e9. Ce sc\u00e9nario est d\u00e9crit en d\u00e9tail dans l\u2019Article <a href=\"\/blog\/bng\/bng-call-flows\/\" rel=\"noopener noreferrer\">BNG Call Flows<\/a>.\r\n\r\nL\u2019\u00e9change DHCP du client avec le serveur est repr\u00e9sent\u00e9 dans le sch\u00e9ma.\r\n\r\n<noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-server-dhcp.png\" alt=\"Client Server DHCP\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9330\" srcset=\"\/wp-content\/uploads\/2023\/07\/client-server-dhcp.png 2048w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-300x85.png 300w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-1024x289.png 1024w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-768x217.png 768w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-1536x434.png 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\"><\/noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-server-dhcp.png\" alt=\"Client Server DHCP\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9330 lazyload\" sizes=\"(max-width: 2048px) 100vw, 2048px\" data-src=\"\/wp-content\/uploads\/2023\/07\/client-server-dhcp.png\" data-srcset=\"\/wp-content\/uploads\/2023\/07\/client-server-dhcp.png 2048w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-300x85.png 300w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-1024x289.png 1024w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-768x217.png 768w, \/wp-content\/uploads\/2023\/07\/client-server-dhcp-1536x434.png 1536w\">\r\n\r\nApr\u00e8s l\u2019autorisation, le client re\u00e7oit une adresse IP pour le Lease-time et, apr\u00e8s la moiti\u00e9 du temps, envoie une demande DHCP afin de renouveler le bail de l\u2019adresse IP d\u00e9di\u00e9e, ce que DHCP ACK attend.\r\n\r\nMais il y a un sc\u00e9nario o\u00f9 l\u2019abonn\u00e9 doit \u00eatre r\u00e9autoris\u00e9, et cela ne se fait que par le message DHCP Discover. C\u2019est l\u00e0 que s\u2019applique la possibilit\u00e9 unique de Stingray BNG : nous pouvons accepter du serveur Radius COA Disconnect (PoD \u2013 Packet of Disconnect) et r\u00e9pondre au client <a href=\"https:\/\/wiki.vasexperts.com\/doku.php?id=dpi:bras_bng:radius_integration:radius_auth_server_integration:radius_auth_coa:start\" rel=\"nofollow noopener noreferrer\">DHCP NAK \u00e0 la prochaine demande de renouvellement (NAK \u2013 signifie Not Acknowledged)<\/a>.\r\n\r\n<noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius.png\" alt=\"Client BNG PCRF Radius\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9329\" srcset=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius.png 2048w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-300x117.png 300w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-1024x400.png 1024w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-768x300.png 768w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-1536x600.png 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\"><\/noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius.png\" alt=\"Client BNG PCRF Radius\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9329 lazyload\" sizes=\"(max-width: 2048px) 100vw, 2048px\" data-src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius.png\" data-srcset=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius.png 2048w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-300x117.png 300w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-1024x400.png 1024w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-768x300.png 768w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-1536x600.png 1536w\">\r\n\r\n   <strong>  Qu\u2019est-ce que \u00e7a nous donne ?   <\/strong>  \r\nL\u2019utilisation de NAK DHCP acc\u00e9l\u00e8re la r\u00e9autorisation exactement de 2 fois et ne n\u00e9cessite pas de red\u00e9marrage du routeur, comme sur les BNG Nokia, o\u00f9 il n\u2019y a aucun moyen de traiter les demandes DHCP apr\u00e8s avoir re\u00e7u le CoA.\r\n<h2>Comment NAK DHCP affecte-t-il le processus m\u00e9tier de l\u2019op\u00e9rateur ?<\/h2>\r\n   <strong>  Tout d\u2019abord, la r\u00e9ponse de NAK acc\u00e9l\u00e8re l\u2019application des options tarifaires   <\/strong>   directement \u00e0 l\u2019\u00e9quipement du client. Le client attend moins, ce qui signifie que sa loyaut\u00e9 augmente. Le changement est g\u00e9n\u00e9ralement n\u00e9cessaire au moment le plus critique, lorsque le client vient de payer le service et qu\u2019il a un besoin urgent d\u2019Internet.\r\n\r\n   <strong>  Deuxi\u00e8mement, l\u2019application des r\u00e9ponses NAK DHCP r\u00e9duit les co\u00fbts de connexion des nouveaux utilisateurs,   <\/strong>   car le temps de l\u2019Assistant sur le site est co\u00fbteux et le d\u00e9penser en attente sur les lignes de support technique est une perte pour l\u2019entreprise. L\u2019algorithme de connexion primaire standard du client suppose qu\u2019il se trouve dans un domaine avec des droits limit\u00e9s, o\u00f9 apr\u00e8s l\u2019authentification, il peut \u00eatre r\u00e9autoris\u00e9 et acc\u00e9der \u00e0 Internet. Stingray r\u00e9duit le temps d\u2019attente de moiti\u00e9, ce qui permettra de connecter plus d\u2019abonn\u00e9s \u00e0 un seul Assistant.\r\n\r\nIl ne faut pas non plus n\u00e9gliger l\u2019algorithme qui permet de ne pas interrompre la session en cours, mais seulement de transmettre les attributs qui ont \u00e9t\u00e9 modifi\u00e9s. Cette option est appel\u00e9e Full CoA ou simplement CoA.\r\n<h2>\u00c0 quoi sert Full CoA ?<\/h2>\r\n<noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa.png\" alt=\"Client BNG PCRF Radius CoA\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9328\" srcset=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa.png 1024w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa-300x88.png 300w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa-768x226.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa.png\" alt=\"Client BNG PCRF Radius CoA\" width=\"100%\" height=\"auto\" class=\"alignnone size-full wp-image-9328 lazyload\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-src=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa.png\" data-srcset=\"\/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa.png 1024w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa-300x88.png 300w, \/wp-content\/uploads\/2023\/07\/client-bng-pcrf-radius-coa-768x226.png 768w\">\r\n\r\nElle est activement utilis\u00e9e dans les op\u00e9rateurs o\u00f9 il n\u2019est pas n\u00e9cessaire de changer l\u2019adresse IP lors de la r\u00e9autorisation. Il suffit de modifier les param\u00e8tres de la session en cours. Un exemple est la connexion d\u2019un service de type \u00ab bouton Turbo \u00bb, qui augmente la vitesse de connexion d\u2019un certain intervalle de temps.\r\n\r\n[product id=\u00a0\u00bb132\u2033 type=\u00a0\u00bbdark\u00a0\u00bb]","protected":false},"excerpt":{"rendered":"<p>Aujourd&rsquo;hui, prenons un exemple de la fa\u00e7on dont la fonctionnalit\u00e9 sp\u00e9cifique de Stingray affecte l&rsquo;entreprise et \u00e9conomise les ressources de l&rsquo;entreprise. Or, \u00e9conomiser signifie r\u00e9aliser des b\u00e9n\u00e9fices.<\/p>\n","protected":false},"author":7,"featured_media":9327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-9324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bng"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>(English) VASExperts<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<script type=\"application\/ld+json\" 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