{"id":13229,"date":"2024-08-09T15:51:31","date_gmt":"2024-08-09T12:51:31","guid":{"rendered":"https:\/\/vasexperts.com\/?p=13229"},"modified":"2025-09-01T16:22:43","modified_gmt":"2025-09-01T13:22:43","slug":"how-monitoring-subscriber-activity-affects-the-operators-business","status":"publish","type":"post","link":"https:\/\/vasexperts.com\/fr\/blog\/bng\/how-monitoring-subscriber-activity-affects-the-operators-business\/","title":{"rendered":"Comment la surveillance de l&rsquo;activit\u00e9 des abonn\u00e9s affecte l&rsquo;activit\u00e9 de l&rsquo;op\u00e9rateur"},"content":{"rendered":"<h2>Qu\u2019est-ce que la surveillance de l\u2019activit\u00e9 des abonn\u00e9s ?<\/h2>\r\nLa surveillance de l\u2019activit\u00e9 des abonn\u00e9s est une fonctionnalit\u00e9 L2 BRAS qui permet aux op\u00e9rateurs de surveiller la disponibilit\u00e9 de la connexion des abonn\u00e9s et, si n\u00e9cessaire, de r\u00e9guler ou de mettre fin \u00e0 leur session. FastDPI dispose de deux m\u00e9canismes pour surveiller l\u2019activit\u00e9 des abonn\u00e9s en fonction du trafic sortant des abonn\u00e9s vers Internet :\r\n<ol>\r\n \t<li><strong>Couper le trafic entrant sans mettre fin \u00e0 la session :<\/strong> une m\u00e9thode r\u00e9active qui surveille les paquets arrivant chez l\u2019abonn\u00e9 depuis Internet. Ce type de contr\u00f4le d\u2019activit\u00e9 limite le trafic entrant vers l\u2019abonn\u00e9 en cas d\u2019inactivit\u00e9, mais ne met pas fin \u00e0 la session de l\u2019abonn\u00e9.<\/li>\r\n \t<li><strong>Fermeture de la session en cas d\u2019inactivit\u00e9 :<\/strong> une m\u00e9thode proactive qui surveille l\u2019\u00e9tat des sessions DHCP et les interrompt lorsqu\u2019elles sont inactives pendant une longue p\u00e9riode. SHCV (Subscriber Host Connectivity Verification) est similaire au contr\u00f4le Nokia BNG : comme le DHCP ne dispose pas d\u2019un m\u00e9canisme permettant de maintenir l\u2019activit\u00e9, d\u2019autres m\u00e9thodes sont utilis\u00e9es pour v\u00e9rifier la disponibilit\u00e9 des n\u0153uds DHCP.<\/li>\r\n<\/ol>\r\nCes m\u00e9canismes sont compatibles et peuvent fonctionner ensemble.\r\n\r\n[product id=\u00a0\u00bb132\u2033 type=\u00a0\u00bbdark\u00a0\u00bb]\r\n<h2>Sc\u00e9narios d\u2019application<\/h2>\r\n<h3>Sc\u00e9nario 1. Surveillance de l\u2019activit\u00e9 des abonn\u00e9s avec coupure du trafic entrant sans fermeture de la session<\/h3>\r\nD\u00e9finissez les param\u00e8tres suivants dans le fichier de configuration fastdpi.conf :\r\n<ul>\r\n \t<li><strong>bras_subs_activity_timeout<\/strong> \u2014 d\u00e9finit l\u2019intervalle d\u2019activit\u00e9 en secondes.\r\nLa valeur par d\u00e9faut est 0 \u2014 d\u00e9sactive la surveillance de l\u2019activit\u00e9.<\/li>\r\n \t<li><strong>bras_subs_activity_ping_timeout<\/strong> \u2014 d\u00e9lai d\u2019expiration en secondes pour envoyer une requ\u00eate ping \u00e0 l\u2019abonn\u00e9 avec une requ\u00eate ARP.\r\nLa valeur par d\u00e9faut est 0 \u2014 d\u00e9sactive le ping ARP de l\u2019abonn\u00e9.<\/li>\r\n<\/ul>\r\nLa surveillance de l\u2019activit\u00e9 des abonn\u00e9s coupe le trafic inet \u2192 subs s\u2019il n\u2019y a pas de trafic subs \u2192 inet. L\u2019abonn\u00e9 devient inactif lorsque bras_subs_activity_timeout secondes se sont \u00e9coul\u00e9es depuis la r\u00e9ception du dernier paquet subs \u2192 inet.\r\n\r\nLe ping est \u00e9galement envoy\u00e9 au souscripteur : une requ\u00eate ARP unicast est envoy\u00e9e toutes les bras_subs_activity_ping_timeout secondes. Si une r\u00e9ponse \u00e0 la requ\u00eate est re\u00e7ue, l\u2019intervalle d\u2019activit\u00e9 bras_subs_activity_timeout est mis \u00e0 jour et le souscripteur est \u00e0 nouveau consid\u00e9r\u00e9 comme actif.\r\n<h3>Sc\u00e9nario 2. Surveillance de l\u2019activit\u00e9 des abonn\u00e9s avec interruption de session en cas d\u2019inactivit\u00e9<\/h3>\r\nD\u00e9finissez les param\u00e8tres suivants dans le fichier de configuration fastdpi.conf :\r\n<ul>\r\n \t<li><strong>bras_dhcp_shcv_interval<\/strong> \u2014 intervalle d\u2019inactivit\u00e9 des abonn\u00e9s, en secondes.\r\nValeur par d\u00e9faut = 0 (SHCV d\u00e9sactiv\u00e9).<\/li>\r\n \t<li><strong>bras_dhcp_shcv_retry_timeout<\/strong> \u2014 temps d\u2019attente de r\u00e9ponse \u00e0 la requ\u00eate ARP, en secondes.\r\nValeur par d\u00e9faut = 3 secondes.<\/li>\r\n \t<li><strong>bras_dhcp_shcv_retry_count<\/strong> \u2014 nombre de requ\u00eates ARP sans r\u00e9ponse.\r\nValeur par d\u00e9faut = 3 requ\u00eates.<\/li>\r\n<\/ul>\r\nLa surveillance de l\u2019activit\u00e9 des abonn\u00e9s ferme la session DHCP de l\u2019abonn\u00e9 en cas d\u2019inactivit\u00e9 prolong\u00e9e et d\u2019absence de r\u00e9ponse \u00e0 une requ\u00eate ARP unicast :\r\n<ol>\r\n \t<li>S\u2019il n\u2019y a pas de trafic subs \u2192 inet pendant bras_dhcp_shcv_interval secondes apr\u00e8s l\u2019envoi du dernier paquet subs \u2192 inet, fastDPI envoie des requ\u00eates ARP unicast \u00e0 l\u2019abonn\u00e9. Le d\u00e9lai d\u2019attente de r\u00e9ponse est de bras_dhcp_shcv_retry_timeout secondes.<\/li>\r\n \t<li>S\u2019il n\u2019y a pas de r\u00e9ponse aux requ\u00eates ARP bras_dhcp_shcv_retry_count (pcs) ou si la r\u00e9ponse ARP contient une adresse MAC diff\u00e9rente, l\u2019abonn\u00e9 est consid\u00e9r\u00e9 comme inactif.<\/li>\r\n \t<li>La session est ferm\u00e9e. M\u00e9canisme :\r\n<ul>\r\n\t<li>Envoi d\u2019Acct Stop ;<\/li>\r\n\t<li>D\u00e9sinscription de l\u2019adresse IP de l\u2019abonn\u00e9 ;<\/li>\r\n\t<li>Mise \u00e0 jour du statut de la session sur \u00ab lib\u00e9r\u00e9e \u00bb. Dans le m\u00eame temps, le d\u00e9lai de r\u00e9autorisation ne change pas afin qu\u2019il n\u2019y ait pas d\u2019autorisations L3 parasites si l\u2019abonn\u00e9 devient actif avant l\u2019expiration du d\u00e9lai de location et envoie autre chose que DHCP ;<\/li>\r\n\t<li>Suppression de la session DHCP (dans la base de donn\u00e9es DHCP).<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ol>\r\n<strong>Pour plus d\u2019informations sur la configuration du contr\u00f4le de l\u2019activit\u00e9 des abonn\u00e9s et ses m\u00e9canismes, consultez <a href=\"https:\/\/wiki.vasexperts.com\/doku.php?id=dpi:bras_bng:bras_l2_options:subs_activity\" rel=\"nofollow\">la documentation VAS Experts.<\/a><\/strong>\r\n<h2>Impact sur les processus op\u00e9rationnels de l\u2019op\u00e9rateur<\/h2>\r\n<ol>\r\n\t<li>La surveillance de l\u2019activit\u00e9 des abonn\u00e9s avec coupure du trafic entrant sans fermeture de la session est particuli\u00e8rement pertinente pour les abonn\u00e9s disposant d\u2019une adresse publique statique. Si un tel abonn\u00e9 devient inactif mais que le trafic continue de lui \u00eatre achemin\u00e9, celui-ci est coup\u00e9 par le BRAS et n\u2019atteint pas l\u2019abonn\u00e9. Cela permet de supprimer toute charge inutile sur l\u2019\u00e9quipement de l\u2019op\u00e9rateur.<\/li>\r\n\t<li>La surveillance de l\u2019activit\u00e9 des abonn\u00e9s avec fermeture de session (v\u00e9rification de la connectivit\u00e9 de l\u2019h\u00f4te de l\u2019abonn\u00e9) permet de d\u00e9sannoncer rapidement l\u2019adresse IP publique d\u2019un abonn\u00e9 d\u2019un BRAS \u00e0 un autre. Cette proc\u00e9dure est tr\u00e8s souvent effectu\u00e9e par l\u2019op\u00e9rateur en cas d\u2019accident ou de maintenance du r\u00e9seau.<\/li>\r\n\t<li>Dans les deux cas, lorsque la surveillance de l\u2019activit\u00e9 est utilis\u00e9e, le statut de l\u2019abonn\u00e9 est transmis plus rapidement au service de facturation. Cela vous permet de d\u00e9tecter rapidement un probl\u00e8me si la session a \u00e9t\u00e9 ferm\u00e9e par erreur et de commencer \u00e0 le r\u00e9soudre.<\/li>\r\n<\/ol>\r\n<h2>Conclusion<\/h2>\r\nLe contr\u00f4le de l\u2019activit\u00e9 des abonn\u00e9s est un outil important pour les op\u00e9rateurs qui cherchent \u00e0 am\u00e9liorer la qualit\u00e9 de leurs services et \u00e0 optimiser l\u2019utilisation de leurs ressources. Ce m\u00e9canisme r\u00e9duit la charge sur les \u00e9quipements, permet de lib\u00e9rer plus rapidement des ressources et transf\u00e8re les informations au syst\u00e8me de facturation, ce qui a finalement un impact positif sur l\u2019activit\u00e9 de l\u2019op\u00e9rateur.<\/strong>","protected":false},"excerpt":{"rendered":"<p>Dans un environnement hautement concurrentiel entre les fournisseurs d&rsquo;acc\u00e8s \u00e0 Internet, il est important non seulement d&rsquo;attirer de nouveaux clients, mais aussi de g\u00e9rer efficacement les ressources actuelles et la qualit\u00e9 du service. L&rsquo;un des outils qui aide \u00e0 cela est la surveillance de l&rsquo;activit\u00e9 des abonn\u00e9s. Voyons comment ce m\u00e9canisme peut affecter l&rsquo;activit\u00e9 d&rsquo;un op\u00e9rateur.<\/p>\n","protected":false},"author":7,"featured_media":13230,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-13229","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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