{"id":4502,"date":"2013-11-08T11:24:25","date_gmt":"2013-11-08T10:24:25","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=4502"},"modified":"2015-01-21T09:53:04","modified_gmt":"2015-01-21T08:53:04","slug":"le-reseau-de-demain-sera-t-il-hybride","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/","title":{"rendered":"Le r\u00e9seau de demain sera-t-il hybride ?"},"content":{"rendered":"<p>Le concept de r\u00e9seau hybride devient de plus en plus pr\u00e9sent dans les r\u00e9flexions des grands comptes autour de leurs r\u00e9seaux WAN. En effet, face \u00e0 l\u2019augmentation des besoins en bande passante et sous la pression du contexte \u00e9conomique, le r\u00e8gne du tout-MPLS semble s\u2019achever. Les technologies r\u00e9seaux hybrides font la promesse de performances et de disponibilit\u00e9 accrues pour un co\u00fbt moindre. Promesse tenue\u00a0?<\/p>\n<h2>Qu\u2019est-ce qu\u2019un r\u00e9seau hybride\u00a0?<\/h2>\n<p>Les r\u00e9seaux d\u2019interconnexion (WAN) des grands comptes se sont majoritairement construits ces derni\u00e8res ann\u00e9es sur la technologie MPLS. Ces r\u00e9seaux se concentraient autour de quelques sites centraux (Datacenters) o\u00f9 \u00e9taient h\u00e9berg\u00e9s applications et acc\u00e8s internet centralis\u00e9s. Dans certains cas, un acc\u00e8s secondaire (MPLS ou internet) \u00e9tait \u00e9galement pr\u00e9sent sur les sites distants afin d\u2019assurer le secours du lien primaire.<\/p>\n<p style=\"text-align: left;\">A contrario, les r\u00e9seaux hybrides combinent l\u2019utilisation beaucoup plus massive de liens internet \u00e0 une limitation de l\u2019usage des r\u00e9seaux MPLS. Des acc\u00e8s internet locaux permettent ainsi d\u2019acheminer les flux non critiques vers les datacenters et peuvent m\u00eame constituer des passerelles locales de sortie vers le web. Seuls les flux critiques restent alors v\u00e9hicul\u00e9s par les r\u00e9seaux MPLS, conduisant \u00e0 une r\u00e9duction massive du d\u00e9bit de ces liens, voire \u00e0 leur suppression dans un certain nombre de cas.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-4503\" title=\"r\u00e9seaux hybrides\" src=\"http:\/\/www.solucominsight.fr\/wp-content\/uploads\/2013\/11\/r\u00e9seaux-hybrides.jpg\" alt=\"\" width=\"396\" height=\"342\" srcset=\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/r\u00e9seaux-hybrides.jpg 440w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/r\u00e9seaux-hybrides-221x191.jpg 221w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/r\u00e9seaux-hybrides-45x39.jpg 45w\" sizes=\"auto, (max-width: 396px) 100vw, 396px\" \/><\/p>\n<h2>De potentiels b\u00e9n\u00e9fices \u00e9conomiques et fonctionnels<\/h2>\n<p>Outre l\u2019utilisation de toute la bande passante disponible sur chaque site, les r\u00e9seaux hybrides peuvent amener des b\u00e9n\u00e9fices\u00a0de nature \u00e9conomique ou fonctionnelle.<\/p>\n<p>Les liaisons MPLS traditionnelles offrent des garanties de performance mais co\u00fbtent cher, en particulier \u00e0 l\u2019international. Les liens internet offrent au contraire un meilleur ratio bande passante \/ co\u00fbt. Par ailleurs, leurs caract\u00e9ristiques (tr\u00e8s standards) permettent d\u2019optimiser l\u2019\u00e9quation \u00e9conomique en recourant \u00e0 des op\u00e9rateurs domestiques plus comp\u00e9titifs.<\/p>\n<p>En outre, le mouvement de fond des entreprises vers le cloud entra\u00eene un d\u00e9placement de plus en plus marqu\u00e9 des ressources de l\u2019entreprise vers internet (messagerie, applications bureautiques voire m\u00e9tier). Dans ce contexte, les r\u00e9seaux hybrides permettent de \u00ab\u00a0rapprocher\u00a0\u00bb l\u2019acc\u00e8s internet des utilisateurs, et d\u2019augmenter le d\u00e9bit moyen disponible.<\/p>\n<h2>Des risques de s\u00e9curit\u00e9 et de performance \u00e0 ne pas n\u00e9gliger<\/h2>\n<p>La mise en place de r\u00e9seaux hybrides implique l\u2019utilisation massive d\u2019acc\u00e8s internet sur les sites distants. Il convient donc de traiter avec attention les risques associ\u00e9s sur les performances et la s\u00e9curit\u00e9.<\/p>\n<p>Internet fonctionne en \u00ab\u00a0Best Effort\u00a0\u00bb et ne garantit pas les performances ou encore la priorisation des donn\u00e9es. L\u2019identification fine des flux est donc primordiale pour garantir la performance n\u00e9cessaire aux applications critiques (en les routant vers le MPLS) et faire transiter les autres par les acc\u00e8s internet. Ceci pose \u00e9galement la question du bon dimensionnement de chacun des liens (MPLS et internet).<\/p>\n<p>Par ailleurs, les acc\u00e8s internet sur les sites deviennent une porte d\u2019entr\u00e9e vuln\u00e9rable\u00a0pour le r\u00e9seau de l\u2019entreprise. Il convient donc de redoubler de vigilance pour prot\u00e9ger les sites des attaques, qu\u2019elles soient localis\u00e9es (DoS\u2026)\u00a0ou plus globales (intrusion, contamination virale\u2026).<\/p>\n<h2>O\u00f9 en sommes-nous aujourd\u2019hui\u00a0?<\/h2>\n<p>Les acteurs du march\u00e9 (acteurs r\u00e9seaux\u00a0&#8211; Cisco, Juniper, Ipanema, Riverbed\u2026 \u2013 ou acteurs s\u00e9curit\u00e9 &#8211; Fortinet, Stonesoft\u2026)\u00a0 disposent de solutions techniques qui atteignent un bon niveau de maturit\u00e9 aujourd\u2019hui. Ces solutions assurent l\u2019identification des flux, leur routage et peuvent int\u00e9grer les fonctions de s\u00e9curit\u00e9.<\/p>\n<p>Les grands comptes, attir\u00e9s par les apports financiers et fonctionnels des r\u00e9seaux hybrides, ont quasiment tous entam\u00e9 leur r\u00e9flexion autour de ces sujets. Cette tendance est surtout vraie pour les p\u00e9rim\u00e8tres internationaux. Les d\u00e9ploiements restent en revanche encore limit\u00e9s.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4504  aligncenter\" title=\"chiffres r\u00e9seaux hybrides\" src=\"http:\/\/www.solucominsight.fr\/wp-content\/uploads\/2013\/11\/chiffres-r\u00e9seaux-hybrides.png\" alt=\"\" width=\"404\" height=\"218\" srcset=\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/chiffres-r\u00e9seaux-hybrides.png 404w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/chiffres-r\u00e9seaux-hybrides-354x191.png 354w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/chiffres-r\u00e9seaux-hybrides-71x39.png 71w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\" \/><\/p>\n<address style=\"text-align: center;\"><em>chiffres bas\u00e9s sur un \u00e9chantillon de 8 grands comptes \u00e0 pr\u00e9sence internationale<\/em><\/address>\n<address style=\"text-align: center;\">\u00a0<\/address>\n<p>Les entreprises doivent \u00e9galement prendre en compte les impacts de cette\u00a0transformation qui ne sont pas uniquement techniques\u00a0: le changement de mod\u00e8le implique une complexification de l\u2019architecture et de l\u2019exploitation (li\u00e9e \u00e0 la multiplication des liens et des acteurs). Les impacts associ\u00e9s, qu\u2019ils soient op\u00e9rationnels ou \u00e9conomiques, doivent bien \u00eatre pris en compte dans le <em>business case<\/em> du projet. Pour \u00e9viter que ce risque ne neutralise les gains escompt\u00e9s, nous pr\u00e9conisons ainsi d\u2019initier le d\u00e9ploiement par la mise en place d\u2019un p\u00e9rim\u00e8tre pilote, permettant de confirmer la pertinence de la strat\u00e9gie retenue en fonction de l\u2019environnement.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le concept de r\u00e9seau hybride devient de plus en plus pr\u00e9sent dans les r\u00e9flexions des grands comptes autour de leurs r\u00e9seaux WAN. En effet, face \u00e0 l\u2019augmentation des besoins en bande passante et sous la pression du contexte \u00e9conomique, le&#8230;<\/p>\n","protected":false},"author":216,"featured_media":6213,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[1406,516,1405,68,1404,351,350],"coauthors":[1402,1403],"class_list":["post-4502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-acces-internet","tag-datacenter","tag-mpls","tag-performance","tag-reseaux-hybrides","tag-telecoms-dentreprise","tag-wan"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Le r\u00e9seau de demain sera-t-il hybride ?<\/title>\n<meta name=\"description\" content=\"Le concept de r\u00e9seau hybride devient de plus en plus pr\u00e9sent dans les r\u00e9flexions des grands comptes autour de leurs r\u00e9seaux WAN. En effet, face \u00e0 l\u2019augmentation des besoins en bande passante et sous la pression du contexte \u00e9conomique, le r\u00e8gne du tout-MPLS semble s\u2019achever. Les technologies r\u00e9seaux hybrides font la promesse de performances et de disponibilit\u00e9 accrues pour un co\u00fbt moindre. Promesse tenue ?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le r\u00e9seau de demain sera-t-il hybride ?\" \/>\n<meta property=\"og:description\" content=\"Le concept de r\u00e9seau hybride devient de plus en plus pr\u00e9sent dans les r\u00e9flexions des grands comptes autour de leurs r\u00e9seaux WAN. En effet, face \u00e0 l\u2019augmentation des besoins en bande passante et sous la pression du contexte \u00e9conomique, le r\u00e8gne du tout-MPLS semble s\u2019achever. Les technologies r\u00e9seaux hybrides font la promesse de performances et de disponibilit\u00e9 accrues pour un co\u00fbt moindre. Promesse tenue ?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\" \/>\n<meta property=\"og:site_name\" content=\"RiskInsight\" \/>\n<meta property=\"article:published_time\" content=\"2013-11-08T10:24:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-01-21T08:53:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/faisceaux-573.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"573\" \/>\n\t<meta property=\"og:image:height\" content=\"217\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Guillaume Vaquero, Youssef\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Guillaume Vaquero, Youssef\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\"},\"author\":{\"name\":\"Guillaume Vaquero\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/en\/#\/schema\/person\/1441caf8a03d6ae70284927d0abc601f\"},\"headline\":\"Le r\u00e9seau de demain sera-t-il hybride ?\",\"datePublished\":\"2013-11-08T10:24:25+00:00\",\"dateModified\":\"2015-01-21T08:53:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\"},\"wordCount\":780,\"publisher\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/faisceaux-573.jpg\",\"keywords\":[\"acc\u00e8s internet\",\"datacenter\",\"MPLS\",\"performance\",\"r\u00e9seaux hybrides\",\"t\u00e9l\u00e9coms d'entreprise\",\"WAN\"],\"articleSection\":[\"M\u00e9tiers - Strat\u00e9gie &amp; projets IT\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\",\"url\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/\",\"name\":\"Le r\u00e9seau de demain sera-t-il hybride ?\",\"isPartOf\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2013\/11\/le-reseau-de-demain-sera-t-il-hybride\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2013\/11\/faisceaux-573.jpg\",\"datePublished\":\"2013-11-08T10:24:25+00:00\",\"dateModified\":\"2015-01-21T08:53:04+00:00\",\"description\":\"Le concept de r\u00e9seau hybride devient de plus en plus pr\u00e9sent dans les r\u00e9flexions des grands comptes autour de leurs r\u00e9seaux WAN. 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