{"id":143468,"date":"2021-02-22T05:35:00","date_gmt":"2021-02-22T05:35:00","guid":{"rendered":"https:\/\/alliedtelesisprod.smmile.com\/lever-le-voile-expliquer-le-sd-wan\/"},"modified":"2026-05-29T17:24:36","modified_gmt":"2026-05-29T17:24:36","slug":"lifting-lid-explaining-sd-wan","status":"publish","type":"post","link":"https:\/\/alliedtelesisprod.smmile.com\/fr\/lifting-lid-explaining-sd-wan\/","title":{"rendered":"Lever le voile : Expliquer le SD-WAN"},"content":{"rendered":"<p>Si votre entreprise moderne poss\u00e8de plus d&#8217;un site g\u00e9ographique, vous avez certainement d\u00e9j\u00e0 entendu le terme SD-WAN. Abr\u00e9viation de Software-Defined Wide Area Networking (r\u00e9seau \u00e9tendu d\u00e9fini par logiciel), le SD-WAN se caract\u00e9rise notamment par la facilit\u00e9 de d\u00e9ploiement, la gestion centralis\u00e9e, la r\u00e9duction des co\u00fbts et l&#8217;am\u00e9lioration de la connectivit\u00e9.<\/p>\n<h2>Qu&#8217;est-ce que le SD-WAN et quels sont ses principaux avantages ?<\/h2>\n<p>Nous nous sommes entretenus avec Greg Hoggarth d&#8217;Allied Telesis Labs pour le savoir.<\/p>\n<h3>Pouvez-vous nous parler un peu de vous et de ce que vous faites chez Allied Telesis ?<\/h3>\n<p>Bonjour, je suis le chef de l&#8217;\u00e9quipe de d\u00e9veloppement logiciel pour les projets SD-WAN d&#8217;AlliedWare Plus. Cela implique de travailler avec le propri\u00e9taire du produit pour d\u00e9terminer les exigences en mati\u00e8re de fonctionnalit\u00e9s, puis de travailler avec l&#8217;\u00e9quipe d&#8217;ing\u00e9nieurs logiciels et de testeurs pour que le SD-WAN soit mis en \u0153uvre et v\u00e9rifi\u00e9.<\/p>\n<h3>Qu&#8217;est-ce que le SD-WAN ?<\/h3>\n<p>D&#8217;une mani\u00e8re g\u00e9n\u00e9rale, il s&#8217;agit de solutions de gestion centralis\u00e9e du r\u00e9seau \u00e9tendu (WAN) qui offrent une forme de transfert dynamique, bas\u00e9 sur des r\u00e8gles, au niveau de la couche application, sur un groupe de liaisons WAN. En dehors de cette d\u00e9finition tr\u00e8s large, chaque fournisseur tend \u00e0 avoir sa propre id\u00e9e de ce qu&#8217;est le SD-WAN, ou de ce qu&#8217;il est pour ses intentions et ses objectifs. Un podcast que j&#8217;ai \u00e9cout\u00e9 r\u00e9cemment l&#8217;a tr\u00e8s bien expliqu\u00e9 : un client ne devrait pas chercher \u00e0 savoir ce que le SD-WAN peut faire ; il devrait plut\u00f4t r\u00e9fl\u00e9chir aux probl\u00e8mes qu&#8217;il a \u00e0 r\u00e9soudre. Ensuite, il faut trouver un fournisseur capable de r\u00e9pondre \u00e0 ces besoins urgents particuliers.<\/p>\n<h3>Il s&#8217;agit donc d&#8217;une d\u00e9cision fond\u00e9e sur les besoins, et non d&#8217;une simple adh\u00e9sion \u00e0 l&#8217;engouement pour le &#8220;SD-WAN&#8221; &#8211; le mot \u00e0 la mode ?<\/h3>\n<p>En effet, le r\u00e9seau WAN n&#8217;est pas une solution \u00e0 tous les probl\u00e8mes. Quels sont mes probl\u00e8mes de r\u00e9seau \u00e9tendu et comment\/qui peut le mieux les r\u00e9soudre ?<\/p>\n<h3>Et comment le SD-WAN r\u00e9sout-il les probl\u00e8mes li\u00e9s aux r\u00e9seaux \u00e9tendus ?<\/h3>\n<p>En g\u00e9n\u00e9ral, la plupart des solutions SD-WAN visent \u00e0 am\u00e9liorer les performances et le contr\u00f4le du trafic applicatif sur les interfaces WAN redondantes et les liaisons VPN en prenant des d\u00e9cisions de transfert bas\u00e9es sur la qualit\u00e9 de la liaison. Elles utilisent des sondes de liaison pour d\u00e9terminer la qualit\u00e9 du chemin (latence, gigue, perte de paquets, etc.). Le routage adapt\u00e9 aux applications redirige le trafic sensible aux performances, comme la vid\u00e9o ou la voix, vers un groupe de liaisons redondantes qui r\u00e9pondent aux exigences de performance de l&#8217;application. Lorsque les performances d&#8217;une liaison donn\u00e9e ne r\u00e9pondent plus aux exigences d&#8217;une application donn\u00e9e, le trafic associ\u00e9 \u00e0 cette application est dynamiquement redirig\u00e9 vers une liaison qui y r\u00e9pond.<\/p>\n<h3>Quels sont les avantages du SD-WAN s\u00e9curis\u00e9 d&#8217;Allied Telesis ?<\/h3>\n<p><a data-entity-substitution=\"canonical\" data-entity-type=\"node\" data-entity-uuid=\"eb2cb646-8b9d-493e-97ef-043cdd4b0776\" href=\"https:\/\/alliedtelesisprod.smmile.com\/fr\/solutions\/sd-wan\/\">Secure SD-WAN<\/a> d&#8217;Allied Telesis simplifie la gestion du WAN car nous avons int\u00e9gr\u00e9 un orchestrateur SD-WAN \u00e0 notre plateforme de gestion graphique, Vista Manager, pour permettre la visibilit\u00e9 et la gestion centralis\u00e9e de tous les sites distants. Les administrateurs peuvent \u00e9quilibrer la charge du trafic entre les succursales sur plusieurs liaisons WAN et d\u00e9finir des mesures de performance acceptables pour les applications critiques et en temps r\u00e9el, de sorte que la livraison est assur\u00e9e et la performance est automatiquement optimis\u00e9e.<\/p>\n<p>Une fois que le SD-WAN est op\u00e9rationnel, l&#8217;orchestrateur permet aux utilisateurs de surveiller facilement le WAN, avec la possibilit\u00e9 d&#8217;effectuer une analyse d\u00e9taill\u00e9e et de voir le fonctionnement et l&#8217;\u00e9tat de liens WAN ou d&#8217;applications sp\u00e9cifiques. Ainsi, les administrateurs r\u00e9seau peuvent \u00eatre certains que le SD-WAN am\u00e9liore le d\u00e9bit des applications, voir les changements dans l&#8217;utilisation des liens WAN au fil du temps et \u00eatre proactifs en apportant des changements \u00e0 la gestion des applications en fonction des besoins de l&#8217;entreprise pour obtenir les meilleures performances possibles.<\/p>\n<h3>Comment le SD-WAN r\u00e9duit-il les co\u00fbts ?<\/h3>\n<p>Le SD-WAN d&#8217;Allied Telesis est s\u00e9curis\u00e9 parce que nous utilisons des pare-feu UTM comme points d&#8217;extr\u00e9mit\u00e9, de sorte que l&#8217;inspection de la s\u00e9curit\u00e9 au niveau de l&#8217;application peut avoir lieu sur les sites des succursales, ce qui fournit une s\u00e9curit\u00e9 WAN et une solution d&#8217;optimisation du trafic WAN dans un seul appareil. Il s&#8217;agit l\u00e0 d&#8217;un gain de temps et d&#8217;argent ind\u00e9niable pour tous les clients.<\/p>\n<p>En outre, la possibilit\u00e9 de remplacer les liaisons MPLS existantes par des tunnels crypt\u00e9s permet de r\u00e9aliser d&#8217;importantes \u00e9conomies. Les entreprises peuvent remplacer les liaisons MPLS interbranches d\u00e9di\u00e9es et co\u00fbteuses par de multiples liaisons Internet \u00e0 faible co\u00fbt, le SD-WAN fournissant l&#8217;intelligence n\u00e9cessaire pour maximiser les performances du r\u00e9seau \u00e9tendu.<\/p>\n<h3>Comment le SD-WAN remplace-t-il le MPLS ?<\/h3>\n<p>Les deux technologies WAN site \u00e0 site les plus utilis\u00e9es aujourd&#8217;hui sont les tunnels crypt\u00e9s sur une connexion internet (liens VPN) et le MPLS. Les tunnels crypt\u00e9s sur une connexion internet sont bon march\u00e9 et flexibles, mais souffrent de taux de latence variables et de perte de paquets, ce qui les rend inadapt\u00e9s au transport de trafic sensible aux performances, tel que la voix et la vid\u00e9o.<\/p>\n<p>Pour cette raison, les liaisons MPLS ont toujours \u00e9t\u00e9 utilis\u00e9es lorsque le trafic entre les sites \u00e9tait sensible aux performances. Les liaisons MPLS sont nettement plus co\u00fbteuses, mais leur performance est garantie par le fournisseur de services.<\/p>\n<p>Le SD-WAN r\u00e9duit le besoin de liaisons MPLS en utilisant un m\u00e9canisme de sondage pour d\u00e9terminer la performance d&#8217;un tunnel donn\u00e9. Si les performances du tunnel ne r\u00e9pondent pas aux exigences d&#8217;une application, le trafic associ\u00e9 \u00e0 cette application est dynamiquement redirig\u00e9 vers un tunnel qui y r\u00e9pond.<\/p>\n<h3>Qui peut b\u00e9n\u00e9ficier du SD-WAN ?<\/h3>\n<p>Toute entreprise moderne poss\u00e9dant plusieurs sites, en particulier celles qui utilisent des liaisons WAN conventionnelles co\u00fbteuses. Celles-ci peuvent \u00eatre remplac\u00e9es par une solution SD-WAN afin de r\u00e9duire \u00e0 la fois le co\u00fbt et la complexit\u00e9 de la gestion du r\u00e9seau \u00e9tendu, tout en optimisant automatiquement les performances du trafic inter-succursales et la fourniture d&#8217;applications &#8211; il n&#8217;y a vraiment pas d&#8217;inconv\u00e9nient.<\/p>\n<h3>Le SD-WAN d&#8217;Allied Telesis peut aider votre entreprise<\/h3>\n<p>Le SD-WAN est un march\u00e9 en pleine expansion &#8211; les r\u00e9seaux WAN traditionnels, \u00e0 l&#8217;ancienne, ne r\u00e9pondent plus vraiment aux besoins des entreprises num\u00e9riques modernes. Le SD-WAN d&#8217;Allied Telesis est motiv\u00e9 par la n\u00e9cessit\u00e9 d&#8217;une gestion dynamique et automatis\u00e9e prenant en charge les connexions WAN haute performance. Celles-ci permettent aux applications d&#8217;aujourd&#8217;hui de soutenir les op\u00e9rations commerciales, avec une meilleure connectivit\u00e9 pour les clients et une meilleure exp\u00e9rience pour l&#8217;utilisateur final.<\/p>\n<p>Vous voulez en savoir plus ? D\u00e9couvrez notre <a data-entity-substitution=\"canonical\" data-entity-type=\"node\" data-entity-uuid=\"eb2cb646-8b9d-493e-97ef-043cdd4b0776\" href=\"https:\/\/alliedtelesisprod.smmile.com\/fr\/solutions\/sd-wan\/\">solution Secure SD-WAN.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is SD-WAN, and what does it do? We asked one of our top software engineers to explain the benefits of our Secure SD-WAN solution.<\/p>\n","protected":false},"author":3,"featured_media":116867,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"location":[],"markets":[],"partners":[],"posttype":[7993],"products":[8017],"services":[],"solutions":[8171],"site_tags":[8149],"technologies":[8194],"class_list":["post-143468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","posttype-blogpost","products-firewallsrouters","solutions-securesd-wan","site_tags-sd-wan","technologies-advancedrouting"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lever le voile : Expliquer le SD-WAN - Allied Telesis<\/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:\/\/alliedtelesisprod.smmile.com\/fr\/lifting-lid-explaining-sd-wan\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lever le voile : Expliquer le SD-WAN - Allied Telesis\" \/>\n<meta property=\"og:description\" content=\"What is SD-WAN, and what does it do? 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