{"id":1083,"date":"2017-08-14T16:59:45","date_gmt":"2017-08-14T23:59:45","guid":{"rendered":"http:\/\/blog.netgear.com\/?p=1083"},"modified":"2025-10-03T17:03:39","modified_gmt":"2025-10-03T15:03:39","slug":"active-or-passive","status":"publish","type":"page","link":"https:\/\/frhub.netgear.com\/fr\/hub\/business\/enterprise-it\/active-or-passive\/","title":{"rendered":"PoE actif ou passif, telle est la question"},"content":{"rendered":"<p><a href=\"https:\/\/www.netgear.com\/fr\/business\/solutions\/poe\/devices\/?utm_source=blog\">Les switches Power over Ethernet (PoE)<\/a>  utilisent des c\u00e2bles Ethernet pour fournir de l\u2019alimentation \u00e0 d\u2019autres appareils compatibles PoE sur le r\u00e9seau comme des points d\u2019acc\u00e8s sans fil, des cam\u00e9ras IP, des t\u00e9l\u00e9phones VoIP, d\u2019autres switches, etc. Cette fonctionnalit\u00e9 permet \u00e0 l&#8217;utilisateur d\u2019alimenter ces appareils sans avoir besoin d\u2019une alimentation s\u00e9par\u00e9e ni de prise \u00e9lectrique \u00e0 proximit\u00e9 de l&#8217;appareil \u00e0 alimenter.<\/p>\n<p>Si votre appareil PoE utilise la norme PoE 48V 802.3af ou 802.3at, on consid\u00e8re qu\u2019il utilise le PoE actif. Cela signifie que l\u2019appareil v\u00e9rifiera l\u2019alimentation entrante et, si celle-ci ne correspond pas aux exigences de l\u2019appareil, celui-ci ne s\u2019allumera tout simplement pas.<\/p>\n<p>Les normes PoE ont \u00e9t\u00e9 optimis\u00e9es pour garantir la s\u00e9curit\u00e9. En plus de fonctionner dans une plage de tension s\u00e9curis\u00e9e, les appareils doivent communiquer selon des proc\u00e9dures \u00e9tablies. Avant de fournir la tension, l\u2019unit\u00e9 d\u2019alimentation PoE teste la connexion. La norme 802.3at effectue ensuite une sorte de \u00ab\u202fhandshake\u202f\u00bb, c\u2019est-\u00e0-dire qu\u2019elle v\u00e9rifie que l\u2019alimentation est compatible entre l\u2019\u00e9metteur et le r\u00e9cepteur PoE, et n\u2019alimente pas l\u2019appareil si le r\u00e9cepteur ne r\u00e9pond pas favorablement.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1086 size-medium\" src=\"https:\/\/www.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/PoE-image-300x214.jpg\" alt=\"Cables\" width=\"300\" height=\"214\" srcset=\"https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/PoE-image-300x214.jpg 300w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/PoE-image-768x548.jpg 768w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/PoE-image-600x428.jpg 600w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/PoE-image.jpg 1000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Le PoE passif fait g\u00e9n\u00e9ralement r\u00e9f\u00e9rence \u00e0 tout appareil utilisant le PoE sans respecter les normes 802.3af ou 802.3at. Cela inclut des appareils tels que des cam\u00e9ras ou des antennes radio fonctionnant en PoE 24V. Le PoE passif ne r\u00e9alise pas de \u00ab handshake \u00bb, il est donc extr\u00eamement important de conna\u00eetre la tension requise par votre appareil avant de brancher le c\u00e2ble Ethernet et de l\u2019alimenter. Si vous utilisez une mauvaise tension, vous risquez de causer des dommages \u00e9lectriques irr\u00e9versibles \u00e0 l&#8217;appareil. Utiliser du PoE passif revient \u00e0 brancher un appareil 120V dans une prise 240V, mais avec des \u00e9quipements qui co\u00fbtent bien plus cher qu\u2019un simple grille-pain.<\/p>\n<p>NETGEAR a fait le choix de suivre les normes pour offrir une s\u00e9curit\u00e9 accrue et une meilleure compatibilit\u00e9 avec les appareils PoE, car la grande majorit\u00e9 de ces appareils suivent ces standards. Les commutateurs NETGEAR peuvent alimenter n\u2019importe quel appareil conforme aux normes 802.3af ou 802.3at du march\u00e9, ce qui en fait les commutateurs PoE les plus flexibles, s\u00fbrs et polyvalents.<\/p>\n<p>Au d\u00e9part, choisir le PoE passif peut sembler une bonne id\u00e9e face au PoE actif, qui est la norme industrielle, mais cela pourrait vous co\u00fbter bien plus cher \u00e0 long terme. La seule fa\u00e7on de garantir une compatibilit\u00e9 totale avec la majorit\u00e9 des appareils PoE sur le march\u00e9 est de respecter la norme industrielle, \u00e0 savoir le PoE actif.<\/p>\n<p>D\u00e9couvrez-en davantage sur<strong><a href=\"https:\/\/www.netgear.com\/fr\/business\/solutions\/poe\/overview\/?utm_source=blog\">le PoE et les solutions PoE actif de NETGEAR<\/a><\/strong> y compris les nouveaux switches PoE++ offrant jusqu\u2019\u00e0 60 W par port !<br \/>\n<a href=\"https:\/\/www.netgear.com\/fr\/business\/solutions\/poe\/overview\/?utm_source=blog\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-5245\" src=\"https:\/\/www.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-1024x294.jpg\" alt=\"Premium 48 Port PoE+ Switch\" width=\"900\" height=\"258\" srcset=\"https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-1024x294.jpg 1024w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-300x86.jpg 300w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-768x221.jpg 768w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-1536x441.jpg 1536w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-2048x588.jpg 2048w, https:\/\/frhub.netgear.com\/fr\/hub\/wp-content\/uploads\/2017\/08\/poe-switch-cropped-blog-600x172.jpg 600w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/a><\/p>\n<p><strong>Plus d&#8217;informations<\/strong><\/p>\n<p>\n<!--SOLUTIONS NETGEAR ENTERPRISE--><\/p>\n<p>Plus d\u2019informations sur nos solutions Business<\/p>\n<div class=\"hs-cta-embed hs-cta-simple-placeholder hs-cta-embed-241151168190\"\n  style=\"max-width:100%; max-height:100%; width:310px;height:50.395835876464844px\" data-hubspot-wrapper-cta-id=\"241151168190\"><br 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PRO-IT--><\/p>\n<p>Nos ing\u00e9nieurs vous accompagnent gratuitement dans la r\u00e9alisation de vos projets<\/p>\n<div class=\"hs-cta-embed hs-cta-simple-placeholder hs-cta-embed-245601455827\"\n  style=\"max-width:100%; max-height:100%; width:287px;height:50.390625px\" data-hubspot-wrapper-cta-id=\"245601455827\"><br \/>\n  <a href=\"https:\/\/cta-na2.hubspot.com\/web-interactives\/public\/v1\/track\/redirect?encryptedPayload=AVxigLInaPY6CKjdDpPVYzjXnEGvPfbouzJx88Hc1CLeTaYRtnOO25E9XicF7pvzMQdle10f103Z%2F0L%2BbiJE2NwgOQVCpgxtwv3X4ZjoLQkEp5IHfzWjQzeN8Zq44UJQhsPMIst0b69UmgxZlIyrErVjJxyPRNNMsT41p87bUD9JAGKJ2ih7inbvBJTAWKny5YWUD0fN29FFl16U6g1urHYkE5vRzSSaFw%3D%3D&#038;webInteractiveContentId=245601455827&#038;portalId=242128791\" target=\"_blank\" rel=\"noopener\" crossorigin=\"anonymous\"><br \/>\n    <img decoding=\"async\" alt=\"CONTACTEZ L'EQUIPE PRO-IT\" loading=\"lazy\" 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[&hellip;]<\/p>\n","protected":false},"author":68,"featured_media":10671,"parent":6714,"menu_order":9,"comment_status":"open","ping_status":"closed","template":"templates\/blog-wifi.php","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-1083","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PoE actif ou passif, telle est la question<\/title>\n<meta name=\"description\" content=\"PoE actif ou passif, telle est la question\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/frhub.netgear.com\/fr\/hub\/business\/enterprise-it\/active-or-passive\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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