{"id":4392,"date":"2013-10-22T20:11:15","date_gmt":"2013-10-22T19:11:15","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=4392"},"modified":"2015-01-21T09:53:23","modified_gmt":"2015-01-21T08:53:23","slug":"le-sdn-ce-quil-faut-savoir-sur-le-cisco-killer","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2013\/10\/le-sdn-ce-quil-faut-savoir-sur-le-cisco-killer\/","title":{"rendered":"Le SDN : ce qu\u2019il faut savoir sur le \u00ab Cisco killer \u00bb"},"content":{"rendered":"

Le SDN<\/strong>\u00a0(Software Defined Networking) constitue l\u2019un des buzzwords du moment dans le monde des infrastructures informatiques. Ce concept, n\u00e9 en 2006 d\u2019un groupe de recherche de l\u2019Universit\u00e9 de Berkeley et Stanford, a boulevers\u00e9 l\u2019approche traditionnelle des r\u00e9seaux. Mais qu\u2019en est-il r\u00e9ellement\u00a0? Au-del\u00e0 de la th\u00e9orie, qu\u2019a-t-il chang\u00e9 concr\u00e8tement\u00a0?<\/p>\n

Les pr\u00e9mices du SDN<\/h2>\n

Il n\u2019existe pas de d\u00e9finition unique du SDN (Software Defined Networking)<\/strong>, chaque acteur du march\u00e9 (\u00e9quipementiers, \u00e9diteurs logiciels \u2026) l\u2019adapte \u00e0 sa propre vision. Pour comprendre cette notion SDN, il faut s\u2019attacher \u00e0 son principe de fonctionnement\u00a0: centraliser la gestion des flux r\u00e9seaux.<\/p>\n

Le SDN est n\u00e9 des travaux de recherche r\u00e9alis\u00e9s \u00e0 l\u2019Universit\u00e9 de Berkley et Stanford. Son objectif est de revoir le fonctionnement des r\u00e9seaux traditionnels actuels, caract\u00e9ris\u00e9s par la concentration du control plane<\/em> (couche de gestion des flux, signalisation) et du data plane<\/em> (couche de transit des donn\u00e9es) au sein des \u00e9quipements r\u00e9seaux. Le principe du SDN est de d\u00e9solidariser ces deux couches en rassemblant les fonctions \u2018\u2018intelligentes\u2019\u2019 (control plane<\/em>) au sein d\u2019un \u00e9quipement centralis\u00e9 (le contr\u00f4leur).<\/p>\n

\u00a0\"\"<\/a><\/p>\n

Fin 2006, afin de concr\u00e9tiser cette nouvelle approche, Martin Cassado et Nick McKeown de l\u2019Universit\u00e9 de Stanford, lancent de nouveaux travaux de d\u00e9veloppement d\u2019un protocole permettant de mettre en pratique les principes du SDN. Ces travaux vont aboutir au d\u00e9veloppement du protocole OpenFlow<\/strong>.<\/p>\n

Quelques \u00e9quipementiers r\u00e9seaux se sont int\u00e9ress\u00e9s au concept d\u00e8s ses pr\u00e9mices, notamment en contribuant \u00e0 des projets de recherche en collaboration avec les universit\u00e9s \u00e0 l\u2019initiative du SDN. Parmi ces soci\u00e9t\u00e9s, HP<\/strong> a collabor\u00e9 d\u00e8s 2007 avec l\u2019Universit\u00e9 de Stanford au d\u00e9veloppement d\u2019Ethane, pr\u00e9d\u00e9cesseur d’OpenFlow.<\/p>\n

C\u2019est en 2011, avec la cr\u00e9ation de la Open Networking Foundation<\/strong><\/a> (ONF)<\/strong>, que les travaux de normalisation autour du SDN et de l\u2019OpenFlow vont commencer. L\u2019Open Networking Foundation est un consortium d\u2019entreprises (op\u00e9rateurs, constructeurs \u2026) qui travaille au d\u00e9veloppement du SDN et \u00e0 sa standardisation.<\/p>\n

Le SDN est encore \u00e0 l\u2019\u00e9poque un march\u00e9 en retrait, en d\u00e9pit d\u2019initiatives \u00e0 l\u2019image de celle lanc\u00e9e aux US par Internet2 (Internet r\u00e9serv\u00e9 \u00e0 l’\u00e9ducation et \u00e0 la recherche) pour un r\u00e9seau SDN \u00e0 100 Gbit\/s Ethernet au standard OpenFlow pr\u00e9vu pour mi-2013.<\/p>\n

Rachat de Nicira Networks par VMware\u00a0: coup d\u2019acc\u00e9l\u00e9rateur pour le SDN<\/h2>\n

Le 23 Juillet 2012, VMware<\/strong> cr\u00e9e l\u2019\u00e9v\u00e9nement en annon\u00e7ant le rachat de Nicira Networks, jeune entreprise pionni\u00e8re et sp\u00e9cialis\u00e9e dans le domaine du SDN, pour la somme de 1,26 milliard de dollars. Nicira Networks qui n\u2019a que 5 ans, n\u2019est autre que l\u2019entreprise fond\u00e9e en 2007 par Martin Cassado, Nick McKeown et Scott Shenker les p\u00e8res du SDN et de l\u2019OpenFlow.<\/p>\n

Cette nouvelle alliance entre le g\u00e9ant de la virtualisation et l\u2019un des pionniers du SDN confirme l\u2019entr\u00e9e de VMware dans le domaine du r\u00e9seau et sa volont\u00e9 de le faire \u00e9voluer. Les propos de Paul Maritz, CEO de VMware \u00e0 l\u2019\u00e9poque de l\u2019acquisition, confirment cette analyse\u00a0: \u00ab\u00a0VMware a conduit la r\u00e9volution de la virtualisation des serveurs, et nous avons l’opportunit\u00e9 de faire la m\u00eame chose dans l’univers du datacenter et du r\u00e9seau en tant que service\u00a0\u00bb<\/em>.<\/p>\n

Nicira Networks et sa technologie SDN s\u2019adosse \u00e0 la force de frappe commerciale de VMWare, ce qui pose la question de l\u2019arriv\u00e9e du SDN dans les datacenters. Ceci marque le d\u00e9but de la diffusion du SDN et de sa vulgarisation dans le domaine de l\u2019lT.<\/p>\n

Avril 2013, est marqu\u00e9 par la cr\u00e9ation du OpenDaylight project<\/strong>, qui travaille au d\u00e9veloppement d\u2019un contr\u00f4leur open-source. Ce projet de d\u00e9veloppement est soutenu par la plupart des acteurs r\u00e9seaux.<\/p>\n

Le SDN, o\u00f9 en est le march\u00e9\u00a0?<\/h2>\n

Le SDN remet en question le mod\u00e8le des grands acteurs du r\u00e9seau\u00a0: s\u2019ils n\u2019int\u00e8grent pas le SDN \u00e0 leur strat\u00e9gie, ils pourraient se retrouver cantonn\u00e9s \u00e0 vendre des bo\u00eetiers de commutation. Les \u00e9quipementiers doivent donc int\u00e9grer le SDN \u00e0 leur strat\u00e9gie.<\/p>\n

Ainsi, pouvoir proposer des \u00e9quipements ou technologies bas\u00e9es sur du SDN devient une priorit\u00e9 et on assiste au rapprochement ou au rachat de petites startups sp\u00e9cialis\u00e9es dans le SDN par les grands acteurs des r\u00e9seaux et du logiciel\u00a0: Oracle<\/strong> rachetant la startup Xsigo qui offre des services r\u00e9seaux bas\u00e9s sur le SDN, Brocade<\/strong> d\u00e9cidant de renforcer ses recherches de R&D \u00e0 travers le rachat de Vyatta, Juniper<\/strong> s\u2019alliant \u00e0 la soci\u00e9t\u00e9 Contrail ou encore Cisco<\/strong> se rapprochant de la soci\u00e9t\u00e9 Insiemi. Des acteurs comme HP<\/strong> se sont int\u00e9ress\u00e9s tr\u00e8s t\u00f4t au SDN et se positionnent aujourd\u2019hui parmi les leaders du march\u00e9.<\/p>\n

Le 16 septembre dernier, le grand public a pu assister en direct au Webcast de Juniper, pr\u00e9sentant sa solution SDN bas\u00e9e sur le contr\u00f4leur Contrail qui s\u2019int\u00e8gre dans l\u2019orchestrateur IBM SmartCloud Orchestrator. La strat\u00e9gie pr\u00e9sent\u00e9e par Juniper vise le secteur priv\u00e9 en offrant des solutions intra et inter-datacenter, mais l\u2019ambition affich\u00e9e est aussi de faire sortir le SDN des datacenters en \u00a0s\u2019adressant aux r\u00e9seaux op\u00e9rateurs.<\/p>\n

Pour les entreprises, le SDN peut repr\u00e9senter un levier pour gagner en flexibilit\u00e9 et optimiser les co\u00fbts r\u00e9seaux. Par ailleurs, le march\u00e9 du SDN reste tr\u00e8s orient\u00e9 datacenter et doit encore convaincre les r\u00e9seaux op\u00e9rateurs qui restent, \u00e0 l\u2019heure actuelle, la chasse gard\u00e9e des solutions r\u00e9seaux traditionnelles.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le SDN\u00a0(Software Defined Networking) constitue l\u2019un des buzzwords du moment dans le monde des infrastructures informatiques. Ce concept, n\u00e9 en 2006 d\u2019un groupe de recherche de l\u2019Universit\u00e9 de Berkeley et Stanford, a boulevers\u00e9 l\u2019approche traditionnelle des r\u00e9seaux. Mais qu\u2019en est-il…<\/p>\n","protected":false},"author":138,"featured_media":6222,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[1366,983,1367],"coauthors":[1003,1041],"class_list":["post-4392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-infrastructures-informatiques","tag-sdn","tag-software-defined-networking"],"acf":[],"yoast_head":"\nLe SDN : Ce qu\u2019il faut savoir sur le \u00ab Cisco killer \u00bb<\/title>\n<meta name=\"description\" content=\"Le SDN (Software Defined Networking) constitue l\u2019un des buzzwords du moment dans le monde des infrastructures informatiques. Ce concept, n\u00e9 en 2006 d\u2019un groupe de recherche de l\u2019Universit\u00e9 de Berkeley et Stanford, a boulevers\u00e9 l\u2019approche traditionnelle des r\u00e9seaux. Mais qu\u2019en est-il r\u00e9ellement ? Au-del\u00e0 de la th\u00e9orie, qu\u2019a-t-il chang\u00e9 concr\u00e8tement ?\" \/>\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\/10\/le-sdn-ce-quil-faut-savoir-sur-le-cisco-killer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le SDN : Ce qu\u2019il faut savoir sur le \u00ab Cisco killer \u00bb\" \/>\n<meta property=\"og:description\" content=\"Le SDN (Software Defined Networking) constitue l\u2019un des buzzwords du moment dans le monde des infrastructures informatiques. Ce concept, n\u00e9 en 2006 d\u2019un groupe de recherche de l\u2019Universit\u00e9 de Berkeley et Stanford, a boulevers\u00e9 l\u2019approche traditionnelle des r\u00e9seaux. Mais qu\u2019en est-il r\u00e9ellement ? 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