{"id":2018,"date":"2023-08-18T19:23:57","date_gmt":"2023-08-18T19:23:57","guid":{"rendered":"https:\/\/www.xadv.eu\/?p=2018"},"modified":"2024-05-13T07:54:34","modified_gmt":"2024-05-13T07:54:34","slug":"sdn-vs-nfv-vs-vnf","status":"publish","type":"post","link":"https:\/\/www.xadv.eu\/hu\/2023\/08\/18\/sdn-vs-nfv-vs-vnf\/","title":{"rendered":"SDN a NFV \u00e9s VNF"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SDN &#8211; Software-Defined Network<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A Software Defined Network (SDN) egy h\u00e1l\u00f3zati architekt\u00fara modell, amely lehet\u0151v\u00e9 teszi a h\u00e1l\u00f3zati er\u0151forr\u00e1sok programozott kezel\u00e9s\u00e9t, vez\u00e9rl\u00e9s\u00e9t \u00e9s optimaliz\u00e1l\u00e1s\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A (SDN) architekt\u00fara elv\u00e1lasztja egym\u00e1st\u00f3l a h\u00e1l\u00f3zati protokol SDN vez\u00e9rl\u0151s\u00edkj\u00e1t (Control Plane) \u00e9s SDN adats\u00edkj\u00e1t (User Plane).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A szoftver \u00e1ltal defini\u00e1lt h\u00e1l\u00f3zat (SDN) egy olyan architekt\u00fara, amely a h\u00e1l\u00f3zat k\u00fcl\u00f6nb\u00f6z\u0151, megk\u00fcl\u00f6nb\u00f6ztethet\u0151 r\u00e9tegeit absztrah\u00e1lja, hogy a h\u00e1l\u00f3zatokat agiliss\u00e1 \u00e9s rugalmass\u00e1 tegye. Az SDN c\u00e9lja a h\u00e1l\u00f3zatvez\u00e9rl\u00e9s jav\u00edt\u00e1sa az\u00e1ltal, hogy lehet\u0151v\u00e9 teszi a v\u00e1llalatok \u00e9s szolg\u00e1ltat\u00f3k sz\u00e1m\u00e1ra, hogy gyorsan reag\u00e1ljanak a v\u00e1ltoz\u00f3 \u00fczleti k\u00f6vetelm\u00e9nyekre.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hagyom\u00e1nyosan a h\u00e1l\u00f3zati architekt\u00fara SDN control plane \u00e9s user plane elemeit egy szabadalmaztatott sz\u00e1ll\u00edt\u00f3i megold\u00e1sba csomagolt\u00e1k. Az OpenFlow ny\u00edlt forr\u00e1sk\u00f3d\u00fa szabv\u00e1ny volt az els\u0151 SDN architekt\u00fara, amely meghat\u00e1rozta, hogyan kell elv\u00e1lasztani a vez\u00e9rl\u0151- \u00e9s adats\u00edk elemeket, \u00e9s hogyan tudnak egym\u00e1ssal kommunik\u00e1lni az OpenFlow protokoll seg\u00edts\u00e9g\u00e9vel. Vannak m\u00e1s szabv\u00e1nyok \u00e9s ny\u00edlt forr\u00e1sk\u00f3d\u00fa szervezetek is SDN er\u0151forr\u00e1sokkal, \u00edgy nem az OpenFlow az egyetlen protokol, amely az SDN-t vez\u00e9rli.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ha az SDN-t a h\u00e1l\u00f3zati funkci\u00f3k virtualiz\u00e1l\u00e1s\u00e1val (NFV) egy\u00fctt haszn\u00e1lj\u00e1k, a kett\u0151 egy\u00fctt egy olyan virtu\u00e1lis h\u00e1l\u00f3zati k\u00f6rnyezetet hoz l\u00e9tre, amely a fizikai h\u00e1l\u00f3zati infrastrukt\u00far\u00e1n telep\u00fcl. Az SDN architekt\u00fara vez\u00e9rl\u0151kre (Controllers) t\u00e1maszkodik, hogy lehet\u0151v\u00e9 tegye a h\u00e1l\u00f3zati rendszergazd\u00e1knak a h\u00e1l\u00f3zat kezel\u00e9s\u00e9t.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"796\" height=\"357\" src=\"https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/image-37.png\" alt=\"\" class=\"wp-image-2052\" style=\"width:500px;height:undefinedpx\" srcset=\"https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/image-37.png 796w, https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/image-37-300x135.png 300w, https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/image-37-768x344.png 768w, https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/image-37-18x8.png 18w\" sizes=\"(max-width: 796px) 100vw, 796px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SDN Architekt\u00fara<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN architekt\u00far\u00e1ban a control \u00e9s adat funkci\u00f3k fel vannak osztva \u00e9s ezek a funkci\u00f3k k\u00fcl\u00f6n-k\u00fcl\u00f6n kezelhet\u0151k, nem pedig egyetlen integr\u00e1lt rendszerk\u00e9nt telep\u00edtve. Ez az architekt\u00fara t\u00f6bb inform\u00e1ci\u00f3t ad az alkalmaz\u00e1soknak a teljes h\u00e1l\u00f3zat \u00e1llapot\u00e1r\u00f3l, szemben a hagyom\u00e1nyos h\u00e1l\u00f3zatokkal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN architekt\u00far\u00e1k h\u00e1rom \u00f6sszetev\u0151b\u0151l vagy funkcionalit\u00e1s csoportb\u00f3l \u00e1llnak:<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">SDN alkalmaz\u00e1sok<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN-alkalmaz\u00e1sok olyan programok, amelyek alkalmaz\u00e1s programoz\u00e1si fel\u00fcleteken (API-k) kereszt\u00fcl kommunik\u00e1lnak a sz\u00fcks\u00e9ges er\u0151forr\u00e1sokkal az SDN Controller-el.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">SDN Controller<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN Controller egy logikai entit\u00e1s, amely utas\u00edt\u00e1sokat vagy k\u00f6vetelm\u00e9nyeket kap az SDN-alkalmaz\u00e1si r\u00e9tegt\u0151l, \u00e9s tov\u00e1bb\u00edtja azokat a h\u00e1l\u00f3zati \u00f6sszetev\u0151knek.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">SDN h\u00e1l\u00f3zati eszk\u00f6z\u00f6k<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN h\u00e1l\u00f3zati eszk\u00f6z\u00f6k vez\u00e9rlik a h\u00e1l\u00f3zat adat- \u00e9s adatfeldolgoz\u00e1si k\u00e9pess\u00e9geit. Ez mag\u00e1ban foglalja az adatokat \u00e9s az adat\u00fat feldolgoz\u00e1s\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>NFV<\/strong> -Network Functions Virtualization<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Az NFV (Network Functions Virtualization) egy architekt\u00fara, amely meghat\u00e1rozza, hogyan kell<br>az SDN-funkci\u00f3kat hardverplatformt\u00f3l f\u00fcggetlen\u00fcl futtatni. Az NFV a Virtu\u00e1lis Network Funkci\u00f3 VNF-ek l\u00e9tesit\u00e9se \u00e1ltal\u00e1nos hardvereken, ahol a NFV a szoftver \u00e9s a hardver sz\u00e9tv\u00e1laszt\u00e1s\u00e1val \u00e9ri el ezt a c\u00e9lt. Az NFV lehet\u0151v\u00e9 teszi a szoftver \u00e9s a hardver egym\u00e1st\u00f3l f\u00fcggetlen m\u0171k\u00f6d\u00e9s\u00e9t \u00e9s fejleszt\u00e9s\u00e9t. A h\u00e1l\u00f3zati funkci\u00f3k \u00faj szoftvermegval\u00f3s\u00edt\u00e1sa optimaliz\u00e1lhat\u00f3 a h\u00e1l\u00f3zati teljes\u00edtm\u00e9ny sk\u00e1l\u00e1z\u00e1s\u00e1nak biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben, biztos\u00edtva, hogy a h\u00e1l\u00f3zat megfeleljen a testreszabott alkalmaz\u00e1sok meghat\u00e1rozott QoS-\u00e9nek.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A Network Functions Virtualization (NFV) a hardvereszk\u00f6z\u00f6k virtualiz\u00e1lt, szoftveres alternat\u00edv\u00e1ja diszkr\u00e9t h\u00e1l\u00f3zati szolg\u00e1ltat\u00e1sok tervez\u00e9s\u00e9re, telep\u00edt\u00e9s\u00e9re \u00e9s kezel\u00e9s\u00e9re. Az NFV az SDN-el kieg\u00e9sz\u00edtve  k\u00f6zpontos\u00edtott m\u00f3dja a h\u00e1l\u00f3zati  control plane funkcionalit\u00e1s megval\u00f3s\u00edt\u00e1s\u00e1nak.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az NFV megold\u00e1s az IT virtualiz\u00e1ci\u00f3s technol\u00f3gi\u00e1khoz vezethet\u0151 vissza. A technol\u00f3gia akkor indult el \u0171tj\u00e1ra, amikor a szolg\u00e1ltat\u00f3k szerett\u00e9k volna felgyors\u00edtani az \u00faj h\u00e1l\u00f3zati szolg\u00e1ltat\u00e1sok bevezet\u00e9s\u00e9t a bev\u00e9teli \u00e9s n\u00f6veked\u00e9si terveik el\u0151mozd\u00edt\u00e1sa \u00e9rdek\u00e9ben. Meg\u00e1llap\u00edtott\u00e1k, hogy a dedik\u00e1lt hardver alap\u00fa eszk\u00f6z\u00f6k korl\u00e1tozz\u00e1k ezeknek a c\u00e9loknak az el\u00e9r\u00e9s\u00e9t. Az IT virtualiz\u00e1ci\u00f3s technol\u00f3gi\u00e1k tapasztalatait k\u00f6vetve azt tal\u00e1lt\u00e1k, hogy az NFV ott seg\u00edtett felgyors\u00edtani a szolg\u00e1ltat\u00e1sok innov\u00e1ci\u00f3j\u00e1t \u00e9s ki\u00e9p\u00edt\u00e9s\u00e9t. Ebb\u0151l kiindulva a telekommunik\u00e1ci\u00f3ban is megindult az alkalmaz\u00e1sa.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"600\" height=\"397\" src=\"https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/VNFs_desktop.webp\" alt=\"\" class=\"wp-image-2050\" srcset=\"https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/VNFs_desktop.webp 600w, https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/VNFs_desktop-300x199.webp 300w, https:\/\/www.xadv.eu\/wp-content\/uploads\/2023\/08\/VNFs_desktop-18x12.webp 18w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Sorce: Calsoft<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Az SDN Szerepe  az NFV-ben<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Az NFV \u00e9s az SDN kifejez\u00e9sek gyakran egy\u00fctt szerepelnek, ami azt a benyom\u00e1st keltheti, hogy az SDN az NFV architekt\u00fara alapvet\u0151 eleme. Az SDN \u00e9s az NFV meglehet\u0151sen elterjedt megold\u00e1sok, \u00e9s mindkett\u0151 hozz\u00e1j\u00e1rul a h\u00e1l\u00f3zatkezel\u00e9s szoftverk\u00f6zpont\u00fa \u00e9s automatiz\u00e1lt megk\u00f6zel\u00edt\u00e9s\u00e9hez, hogy az agilisabb \u00e9s k\u00f6lts\u00e9ghat\u00e9konyabb legyen. Azonban technikailag az SDN \u00e9s NFV k\u00fcl\u00f6nb\u00f6znek egym\u00e1st\u00f3l. Mindkett\u0151 hozz\u00e1j\u00e1rul a szoftverk\u00f6zpont\u00fa \u00e9s automatiz\u00e1lt h\u00e1l\u00f3zatkezel\u00e9si megk\u00f6zel\u00edt\u00e9s el\u0151mozd\u00edt\u00e1s\u00e1hoz, azzal a c\u00e9llal, hogy agilisabb \u00e9s k\u00f6lts\u00e9ghat\u00e9konyabb legyen. Mindkett\u0151 hozz\u00e1j\u00e1rul a h\u00e1l\u00f3zati funkci\u00f3k k\u00fcl\u00f6nb\u00f6z\u0151 tengelyeken t\u00f6rt\u00e9n\u0151 sz\u00e9tv\u00e1laszt\u00e1s\u00e1hoz. A vez\u00e9rl\u00e9si \u00e9s felhaszn\u00e1l\u00f3i s\u00edkok elv\u00e1laszt\u00e1sa SDN-hez, hardver \u00e9s szoftver elv\u00e1laszt\u00e1sa pedig az NFV-hez k\u00f6thet\u0151.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az SDN technol\u00f3gia nagym\u00e9rt\u00e9kben jav\u00edtja az NFV infrastrukt\u00fara h\u00e1l\u00f3zat vez\u00e9rl\u00e9s\u00e9t \u00e9s kezel\u00e9s\u00e9t. Ezzel szemben az SDN architekt\u00fara funkcion\u00e1lis blokkjai NFV infrastrukt\u00far\u00e1ban t\u00e1rolt virtualiz\u00e1lt h\u00e1l\u00f3zati funkci\u00f3k form\u00e1j\u00e1ban is telep\u00edthet\u0151k. Az SDN azonban nem k\u00f6telez\u0151 technol\u00f3gia az NFV l\u00e9trehoz\u00e1s\u00e1ban.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>VNF<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A Virtual Network Functions (VNF-ek) ny\u00edlt platformokon fut\u00f3 virtualiz\u00e1lt h\u00e1l\u00f3zati szolg\u00e1ltat\u00e1sok, amelyeket kor\u00e1bban saj\u00e1t fejleszt\u00e9s\u0171, dedik\u00e1lt hardveren fut\u00f3 applik\u00e1ci\u00f3 hajtott v\u00e9gre. Az ismert VNF-ek k\u00f6z\u00e9 tartoznak a virtualiz\u00e1lt rooterek, t\u0171zfalak, WAN-optimaliz\u00e1l\u00e1si \u00e9s NAT szolg\u00e1ltat\u00e1sok.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A VNF-ek virtualiz\u00e1ci\u00f3s technol\u00f3gi\u00e1val, Network Function Virtualization (NFV) hozhat\u00f3ak l\u00e9tre. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A VNF-ek n\u00f6velik a h\u00e1l\u00f3zat m\u00e9retezhet\u0151s\u00e9g\u00e9t \u00e9s agilit\u00e1s\u00e1t (scalability and agility), mik\u00f6zben lehet\u0151v\u00e9 teszik a h\u00e1l\u00f3zati infrastrukt\u00fara er\u0151forr\u00e1sainak jobb kihaszn\u00e1l\u00e1s\u00e1t is. Fontos c\u00e9lok k\u00f6z\u00e9 tartozik az energiafogyaszt\u00e1s cs\u00f6kkent\u00e9se, valamint a biztons\u00e1g n\u00f6vel\u00e9se. Mivel a VNF-ek helyettes\u00edtik a fizikai hardvert ez a m\u0171k\u00f6d\u00e9si \u00e9s t\u0151kekiad\u00e1sok cs\u00f6kken\u00e9s\u00e9t is eredm\u00e9nyezi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>SDN &#8211; Software-Defined Network A Software Defined Network (SDN) egy h\u00e1l\u00f3zati architekt\u00fara modell, amely lehet\u0151v\u00e9 teszi a h\u00e1l\u00f3zati er\u0151forr\u00e1sok programozott kezel\u00e9s\u00e9t, vez\u00e9rl\u00e9s\u00e9t \u00e9s optimaliz\u00e1l\u00e1s\u00e1t. A (SDN) architekt\u00fara elv\u00e1lasztja egym\u00e1st\u00f3l a h\u00e1l\u00f3zati protokol SDN vez\u00e9rl\u0151s\u00edkj\u00e1t (Control Plane) \u00e9s SDN adats\u00edkj\u00e1t (User Plane). A szoftver \u00e1ltal defini\u00e1lt h\u00e1l\u00f3zat (SDN) egy olyan architekt\u00fara, amely a h\u00e1l\u00f3zat k\u00fcl\u00f6nb\u00f6z\u0151, megk\u00fcl\u00f6nb\u00f6ztethet\u0151 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.xadv.eu\/hu\/2023\/08\/18\/sdn-vs-nfv-vs-vnf\/\"> <span class=\"screen-reader-text\">SDN a NFV \u00e9s VNF<\/span> Read More &raquo;<\/a><\/p>","protected":false},"author":1,"featured_media":2054,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[21,23],"tags":[],"class_list":["post-2018","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5g","category-network-slicing"],"_links":{"self":[{"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/posts\/2018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/comments?post=2018"}],"version-history":[{"count":5,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/posts\/2018\/revisions"}],"predecessor-version":[{"id":2703,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/posts\/2018\/revisions\/2703"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/media\/2054"}],"wp:attachment":[{"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/media?parent=2018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/categories?post=2018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xadv.eu\/hu\/wp-json\/wp\/v2\/tags?post=2018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}