{"id":37036,"date":"2025-12-21T14:19:40","date_gmt":"2025-12-21T07:19:40","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=37036"},"modified":"2025-12-23T14:20:58","modified_gmt":"2025-12-23T07:20:58","slug":"sdn-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/sdn-la-gi\/","title":{"rendered":"SDN l\u00e0 g\u00ec? T\u1ed5ng quan Software-Defined Networking t\u1eeb A\u2013Z"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#SDN-la-gi\" >SDN l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Vi-sao-SDN-ra-doi\" >V\u00ec sao SDN ra \u0111\u1eddi?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Kien-truc-SDN-gom-nhung-thanh-phan-nao\" >Ki\u1ebfn tr\u00fac SDN g\u1ed3m nh\u1eefng th\u00e0nh ph\u1ea7n n\u00e0o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Application-Layer-Lop-Ung-dung\" >Application Layer (L\u1edbp \u1ee8ng d\u1ee5ng)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Control-Layer-Lop-Dieu-khien-%E2%80%93-SDN-Controller\" >Control Layer (L\u1edbp \u0110i\u1ec1u khi\u1ec3n &#8211; SDN Controller)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Infrastructure-Layer-Lop-Co-so-ha-tang\" >Infrastructure Layer (L\u1edbp C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Nguyen-ly-hoat-dong-cua-SDN\" >Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Cac-giao-thuc-pho-bien-trong-SDN\" >C\u00e1c giao th\u1ee9c ph\u1ed5 bi\u1ebfn trong SDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Uu-diem-cua-SDN\" >\u01afu \u0111i\u1ec3m c\u1ee7a SDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Han-che-va-thach-thuc-cua-SDN\" >H\u1ea1n ch\u1ebf v\u00e0 th\u00e1ch th\u1ee9c c\u1ee7a SDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#So-sanh-SDN-va-mang-truyen-thong\" >So s\u00e1nh SDN v\u00e0 m\u1ea1ng truy\u1ec1n th\u1ed1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Ung-dung-thuc-te-cua-SDN\" >\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a SDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#SDN-co-lien-quan-gi-den-Cloud-Ao-hoa-va-NFV\" >SDN c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn Cloud, \u1ea2o h\u00f3a v\u00e0 NFV?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Khi-nao-nen-can-nhac-su-dung-SDN\" >Khi n\u00e0o n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng SDN?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Cau-hoi-thuong-gap-ve-SDN-FAQ\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 SDN (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#SDN-co-thay-the-hoan-toan-mang-truyen-thong-khong\" >SDN c\u00f3 thay th\u1ebf ho\u00e0n to\u00e0n m\u1ea1ng truy\u1ec1n th\u1ed1ng kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#SDN-co-phu-hop-doanh-nghiep-nho-khong\" >SDN c\u00f3 ph\u00f9 h\u1ee3p doanh nghi\u1ec7p nh\u1ecf kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#SDN-co-kho-trien-khai-khong\" >SDN c\u00f3 kh\u00f3 tri\u1ec3n khai kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/#Ket-luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng truy\u1ec1n th\u1ed1ng \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec1u th\u00e1ch th\u1ee9c l\u1edbn trong vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 v\u1eadn h\u00e0nh. S\u1ef1 gia t\u0103ng c\u1ee7a d\u1eef li\u1ec7u di \u0111\u1ed9ng, nhu c\u1ea7u \u1ea3o h\u00f3a m\u00e1y ch\u1ee7 v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y (Cloud Computing) \u0111\u00f2i h\u1ecfi h\u1ea1 t\u1ea7ng m\u1ea1ng ph\u1ea3i linh ho\u1ea1t h\u01a1n. M\u00f4 h\u00ecnh qu\u1ea3n l\u00fd ph\u1ea7n c\u1ee9ng t\u0129nh, c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng t\u1eebng thi\u1ebft b\u1ecb kh\u00f4ng c\u00f2n \u0111\u00e1p \u1ee9ng \u0111\u1ee7 t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>Software-Defined Networking (SDN) xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t h\u01b0\u1edbng ti\u1ebfp c\u1eadn m\u1edbi \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y. Ki\u1ebfn tr\u00fac n\u00e0y thay \u0111\u1ed5i c\u00e1ch thi\u1ebft k\u1ebf, x\u00e2y d\u1ef1ng v\u00e0 v\u1eadn h\u00e0nh m\u1ea1ng b\u1eb1ng c\u00e1ch t\u00e1ch bi\u1ec7t ph\u1ea7n \u0111i\u1ec1u khi\u1ec3n ra kh\u1ecfi ph\u1ea7n c\u1ee9ng chuy\u1ec3n m\u1ea1ch. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u00e0 khoa h\u1ecdc v\u1ec1 SDN, t\u1eeb kh\u00e1i ni\u1ec7m, ki\u1ebfn tr\u00fac \u0111\u1ebfn \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SDN-la-gi\"><\/span>SDN l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/sdn-la-gi\/\"><strong>SDN (Software-Defined Networking)<\/strong><\/a>, hay m\u1ea1ng \u0111\u1ecbnh ngh\u0129a b\u1eb1ng ph\u1ea7n m\u1ec1m, l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac m\u1ea1ng m\u00e1y t\u00ednh h\u01b0\u1edbng t\u1edbi vi\u1ec7c l\u00e0m cho m\u1ea1ng tr\u1edf n\u00ean linh ho\u1ea1t v\u00e0 d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. \u0110i\u1ec3m c\u1ed1t l\u00f5i c\u1ee7a SDN l\u00e0 s\u1ef1 t\u00e1ch bi\u1ec7t gi\u1eefa l\u1edbp \u0111i\u1ec1u khi\u1ec3n m\u1ea1ng (Control Plane) v\u00e0 l\u1edbp chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u (Data Plane).<\/p>\n<p>Trong c\u00e1c m\u1ea1ng truy\u1ec1n th\u1ed1ng, m\u1ed7i thi\u1ebft b\u1ecb m\u1ea1ng (nh\u01b0 router hay switch) \u0111\u1ec1u c\u00f3 b\u1ed9 n\u00e3o ri\u00eang. Thi\u1ebft b\u1ecb t\u1ef1 quy\u1ebft \u0111\u1ecbnh c\u00e1ch x\u1eed l\u00fd v\u00e0 chuy\u1ec3n ti\u1ebfp g\u00f3i tin d\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t s\u1eb5n b\u00ean trong. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c thay \u0111\u1ed5i ch\u00ednh s\u00e1ch m\u1ea1ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p v\u00ec qu\u1ea3n tr\u1ecb vi\u00ean ph\u1ea3i can thi\u1ec7p v\u00e0o t\u1eebng thi\u1ebft b\u1ecb v\u1eadt l\u00fd.<\/p>\n<p>SDN thay \u0111\u1ed5i t\u01b0 duy n\u00e0y b\u1eb1ng c\u00e1ch t\u1eadp trung tr\u00ed tu\u1ec7 c\u1ee7a m\u1ea1ng v\u00e0o m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m b\u1eb1ng ph\u1ea7n m\u1ec1m. C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng b\u00ean d\u01b0\u1edbi ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 th\u1ef1c thi vi\u1ec7c chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u theo ch\u1ec9 th\u1ecb t\u1eeb b\u1ed9 \u0111i\u1ec1u khi\u1ec3n. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean l\u1eadp tr\u00ecnh v\u00e0 ki\u1ec3m so\u00e1t h\u00e0nh vi c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u1ea1ng th\u00f4ng qua m\u1ed9t giao di\u1ec7n duy nh\u1ea5t, thay v\u00ec thao t\u00e1c th\u1ee7 c\u00f4ng tr\u00ean h\u00e0ng tr\u0103m thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng.<\/p>\n<p>M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a SDN l\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n m\u1ea1ng m\u1ed9t c\u00e1ch \u0111\u1ed9ng, c\u1edfi m\u1edf v\u00e0 c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c. Ki\u1ebfn tr\u00fac n\u00e0y gi\u00fap h\u1ea1 t\u1ea7ng m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m, c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt v\u00e0 thay \u0111\u1ed5i nhanh ch\u00f3ng theo nhu c\u1ea7u kinh doanh m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c qu\u00e1 nhi\u1ec1u v\u00e0o ph\u1ea7n c\u1ee9ng b\u00ean d\u01b0\u1edbi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37039\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-1.jpg\" alt=\"Software-Defined Networking (SDN) 1\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-1.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-1-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vi-sao-SDN-ra-doi\"><\/span>V\u00ec sao SDN ra \u0111\u1eddi?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S\u1ef1 ra \u0111\u1eddi c\u1ee7a SDN xu\u1ea5t ph\u00e1t t\u1eeb nh\u1eefng h\u1ea1n ch\u1ebf ng\u00e0y c\u00e0ng r\u00f5 r\u1ec7t c\u1ee7a ki\u1ebfn tr\u00fac m\u1ea1ng truy\u1ec1n th\u1ed1ng tr\u01b0\u1edbc s\u1ef1 b\u00f9ng n\u1ed5 c\u1ee7a c\u00f4ng ngh\u1ec7 th\u00f4ng tin.<\/p>\n<p>\u0110\u1ea7u ti\u00ean l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 qu\u1ea3n l\u00fd. M\u1ea1ng truy\u1ec1n th\u1ed1ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng v\u1edbi c\u00e1c giao th\u1ee9c \u0111\u1ed9c quy\u1ec1n. Vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng ho\u1eb7c thay \u0111\u1ed5i c\u1ea5u h\u00ecnh y\u00eau c\u1ea7u k\u1ef9 s\u01b0 ph\u1ea3i truy c\u1eadp v\u00e0o t\u1eebng thi\u1ebft b\u1ecb, g\u00f5 t\u1eebng d\u00f2ng l\u1ec7nh c\u1ea5u h\u00ecnh. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ed1n nhi\u1ec1u th\u1eddi gian, d\u1ec5 x\u1ea3y ra l\u1ed7i do con ng\u01b0\u1eddi v\u00e0 kh\u00f3 \u0111\u1ed3ng b\u1ed9 h\u00f3a tr\u00ean quy m\u00f4 l\u1edbn.<\/p>\n<p>Th\u1ee9 hai l\u00e0 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 m\u00f4 h\u00ecnh l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u. Tr\u01b0\u1edbc \u0111\u00e2y, ph\u1ea7n l\u1edbn l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng \u0111i theo h\u01b0\u1edbng Client-Server (North-South traffic). Hi\u1ec7n nay, trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, l\u01b0u l\u01b0\u1ee3ng ch\u1ee7 y\u1ebfu di chuy\u1ec3n gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 v\u1edbi nhau (East-West traffic) \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho c\u00e1c \u1ee9ng d\u1ee5ng ph\u00e2n t\u00e1n, Big Data v\u00e0 \u1ea3o h\u00f3a. C\u00e1c ki\u1ebfn tr\u00fac m\u1ea1ng ph\u00e2n t\u1ea7ng c\u0169 (Hierarchical) kh\u00f4ng c\u00f2n t\u1ed1i \u01b0u cho lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0y, d\u1eabn \u0111\u1ebfn \u0111\u1ed9 tr\u1ec5 cao v\u00e0 hi\u1ec7u su\u1ea5t k\u00e9m.<\/p>\n<p>Th\u1ee9 ba l\u00e0 nhu c\u1ea7u t\u1eeb Cloud Computing v\u00e0 \u1ea3o h\u00f3a. C\u00e1c m\u00e1y \u1ea3o (VM) v\u00e0 container c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra, di chuy\u1ec3n ho\u1eb7c x\u00f3a b\u1ecf ch\u1ec9 trong v\u00e0i gi\u00e2y. H\u1ea1 t\u1ea7ng m\u1ea1ng v\u1eadt l\u00fd t\u0129nh kh\u00f4ng th\u1ec3 theo k\u1ecbp t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i n\u00e0y. M\u1ed9t m\u00e1y \u1ea3o di chuy\u1ec3n sang m\u00e1y ch\u1ee7 v\u1eadt l\u00fd kh\u00e1c c\u1ea7n m\u1ea1ng ph\u1ea3i t\u1ef1 \u0111\u1ed9ng c\u1ea5u h\u00ecnh l\u1ea1i VLAN, ACL v\u00e0 QoS ngay l\u1eadp t\u1ee9c.<\/p>\n<p>SDN \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n tr\u00ean. C\u00f4ng ngh\u1ec7 n\u00e0y mang l\u1ea1i kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng h\u00f3a, gi\u1ea3m s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c nh\u00e0 cung c\u1ea5p ph\u1ea7n c\u1ee9ng \u0111\u1ed9c quy\u1ec1n v\u00e0 cho ph\u00e9p m\u1ea1ng l\u01b0\u1edbi th\u00edch nghi nhanh ch\u00f3ng v\u1edbi c\u00e1c y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng m\u1edbi.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Kien-truc-SDN-gom-nhung-thanh-phan-nao\"><\/span>Ki\u1ebfn tr\u00fac SDN g\u1ed3m nh\u1eefng th\u00e0nh ph\u1ea7n n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ki\u1ebfn tr\u00fac SDN \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ph\u00e2n l\u1edbp r\u00f5 r\u00e0ng, t\u1ea1o n\u00ean s\u1ef1 linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng l\u1eadp tr\u00ecnh cao. M\u00f4 h\u00ecnh ti\u00eau chu\u1ea9n c\u1ee7a SDN bao g\u1ed3m ba l\u1edbp ch\u00ednh:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Application-Layer-Lop-Ung-dung\"><\/span>Application Layer (L\u1edbp \u1ee8ng d\u1ee5ng)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L\u1edbp \u1ee9ng d\u1ee5ng n\u1eb1m \u1edf t\u1ea7ng cao nh\u1ea5t trong ki\u1ebfn tr\u00fac SDN. \u0110\u00e2y l\u00e0 n\u01a1i ch\u1ee9a c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 \u1ee9ng d\u1ee5ng m\u1ea1ng ph\u1ee5c v\u1ee5 cho nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a doanh nghi\u1ec7p. C\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y giao ti\u1ebfp v\u1edbi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 y\u00eau c\u1ea7u t\u00e0i nguy\u00ean m\u1ea1ng ho\u1eb7c \u0111\u1ecbnh ngh\u0129a c\u00e1c ch\u00ednh s\u00e1ch x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng.<\/p>\n<p>V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 \u1ee9ng d\u1ee5ng t\u1ea1i l\u1edbp n\u00e0y bao g\u1ed3m h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t m\u1ea1ng, t\u01b0\u1eddng l\u1eeda (firewall), c\u00e2n b\u1eb1ng t\u1ea3i (load balancing) ho\u1eb7c c\u00e1c c\u00f4ng c\u1ee5 t\u1ed1i \u01b0u h\u00f3a n\u0103ng l\u01b0\u1ee3ng. L\u1edbp \u1ee9ng d\u1ee5ng kh\u00f4ng c\u1ea7n quan t\u00e2m \u0111\u1ebfn chi ti\u1ebft ph\u1ea7n c\u1ee9ng b\u00ean d\u01b0\u1edbi. C\u00e1c ch\u01b0\u01a1ng tr\u00ecnh ch\u1ec9 c\u1ea7n g\u1eedi y\u00eau c\u1ea7u logic v\u1ec1 c\u00e1ch m\u1ea1ng n\u00ean ho\u1ea1t \u0111\u1ed9ng t\u1edbi l\u1edbp \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Control-Layer-Lop-Dieu-khien-%E2%80%93-SDN-Controller\"><\/span>Control Layer (L\u1edbp \u0110i\u1ec1u khi\u1ec3n &#8211; SDN Controller)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L\u1edbp \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3ng vai tr\u00f2 l\u00e0 &#8220;b\u1ed9 n\u00e3o&#8221; c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng SDN. Th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i t\u1ea1i \u0111\u00e2y l\u00e0 <strong>SDN Controller<\/strong>. Controller ch\u1ecbu tr\u00e1ch nhi\u1ec7m duy tr\u00ec c\u00e1i nh\u00ecn to\u00e0n c\u1ea3nh (Global View) v\u1ec1 tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ea1ng l\u01b0\u1edbi.<\/p>\n<p>Controller ti\u1ebfp nh\u1eadn c\u00e1c y\u00eau c\u1ea7u t\u1eeb l\u1edbp \u1ee9ng d\u1ee5ng b\u00ean tr\u00ean v\u00e0 chuy\u1ec3n d\u1ecbch ch\u00fang th\u00e0nh c\u00e1c ch\u1ec9 th\u1ecb c\u1ee5 th\u1ec3 cho thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng b\u00ean d\u01b0\u1edbi. \u0110\u1ed3ng th\u1eddi, Controller c\u0169ng thu th\u1eadp th\u00f4ng tin th\u1ed1ng k\u00ea v\u00e0 tr\u1ea1ng th\u00e1i t\u1eeb c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u1ec3 cung c\u1ea5p d\u1eef li\u1ec7u cho l\u1edbp \u1ee9ng d\u1ee5ng. T\u1ea1i l\u1edbp n\u00e0y, kh\u00e1i ni\u1ec7m &#8220;tr\u00ed th\u00f4ng minh c\u1ee7a m\u1ea1ng&#8221; \u0111\u01b0\u1ee3c t\u1eadp trung h\u00f3a v\u1ec1 m\u1eb7t logic, gi\u00fap vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn v\u00e0 b\u1ea3o m\u1eadt tr\u1edf n\u00ean nh\u1ea5t qu\u00e1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Infrastructure-Layer-Lop-Co-so-ha-tang\"><\/span>Infrastructure Layer (L\u1edbp C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L\u1edbp c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng, hay c\u00f2n g\u1ecdi l\u00e0 Data Plane, bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng th\u1ef1c t\u1ebf nh\u01b0 switch, router ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb \u1ea3o h\u00f3a. Trong ki\u1ebfn tr\u00fac SDN, c\u00e1c thi\u1ebft b\u1ecb n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;thi\u1ebft b\u1ecb chuy\u1ec3n ti\u1ebfp&#8221; (forwarding devices).<\/p>\n<p>Kh\u00e1c v\u1edbi thi\u1ebft b\u1ecb truy\u1ec1n th\u1ed1ng, thi\u1ebft b\u1ecb t\u1ea1i l\u1edbp n\u00e0y kh\u00f4ng th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n ph\u1ee9c t\u1ea1p hay ch\u1ea1y c\u00e1c giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn r\u1eafc r\u1ed1i. Nhi\u1ec7m v\u1ee5 ch\u00ednh l\u00e0 nh\u1eadn g\u00f3i tin v\u00e0 chuy\u1ec3n ti\u1ebfp ch\u00fang d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc (flow rules) do Controller cung c\u1ea5p. S\u1ef1 \u0111\u01a1n gi\u1ea3n h\u00f3a n\u00e0y gi\u00fap thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng c\u00f3 th\u1ec3 t\u1eadp trung t\u1ed1i \u0111a v\u00e0o hi\u1ec7u su\u1ea5t chuy\u1ec3n m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen-ly-hoat-dong-cua-SDN\"><\/span>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SDN d\u1ef1a tr\u00ean s\u1ef1 giao ti\u1ebfp li\u00ean t\u1ee5c gi\u1eefa ba l\u1edbp ki\u1ebfn tr\u00fac th\u00f4ng qua c\u00e1c giao di\u1ec7n l\u1eadp tr\u00ecnh \u1ee9ng d\u1ee5ng (API). D\u00f2ng ch\u1ea3y th\u00f4ng tin v\u00e0 \u0111i\u1ec1u khi\u1ec3n di\u1ec5n ra nh\u01b0 sau:<\/p>\n<p><strong>Giao ti\u1ebfp Northbound (B\u1eafc):<\/strong> \u0110\u00e2y l\u00e0 k\u1ebft n\u1ed1i gi\u1eefa L\u1edbp \u1ee8ng d\u1ee5ng v\u00e0 L\u1edbp \u0110i\u1ec1u khi\u1ec3n. Th\u00f4ng qua Northbound API, c\u00e1c \u1ee9ng d\u1ee5ng g\u1eedi y\u00eau c\u1ea7u xu\u1ed1ng Controller. V\u00ed d\u1ee5, m\u1ed9t \u1ee9ng d\u1ee5ng VoIP c\u00f3 th\u1ec3 y\u00eau c\u1ea7u Controller \u0111\u1ea3m b\u1ea3o b\u0103ng th\u00f4ng \u01b0u ti\u00ean cho c\u00e1c cu\u1ed9c g\u1ecdi tho\u1ea1i.<\/p>\n<p><strong>Giao ti\u1ebfp Southbound (Nam):<\/strong> \u0110\u00e2y l\u00e0 k\u1ebft n\u1ed1i gi\u1eefa L\u1edbp \u0110i\u1ec1u khi\u1ec3n v\u00e0 L\u1edbp C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng. Controller s\u1eed d\u1ee5ng Southbound API (ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 OpenFlow) \u0111\u1ec3 \u0111\u1ea9y c\u00e1c b\u1ea3ng d\u00f2ng (flow table) xu\u1ed1ng switch v\u00e0 router. \u0110\u1ed3ng th\u1eddi, c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u0169ng d\u00f9ng giao th\u1ee9c n\u00e0y \u0111\u1ec3 b\u00e1o c\u00e1o tr\u1ea1ng th\u00e1i \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c g\u1eedi c\u00e1c g\u00f3i tin l\u1ea1 l\u00ean Controller \u0111\u1ec3 xin ch\u1ec9 th\u1ecb.<\/p>\n<p><strong>Quy tr\u00ecnh x\u1eed l\u00fd g\u00f3i tin:<\/strong> Khi m\u1ed9t g\u00f3i tin \u0111i v\u00e0o thi\u1ebft b\u1ecb switch trong m\u1ea1ng SDN, switch s\u1ebd ki\u1ec3m tra b\u1ea3ng d\u00f2ng c\u1ee7a m\u00ecnh. N\u1ebfu t\u00ecm th\u1ea5y quy t\u1eafc kh\u1edbp, switch s\u1ebd th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng t\u01b0\u01a1ng \u1ee9ng (nh\u01b0 chuy\u1ec3n ti\u1ebfp c\u1ed5ng n\u00e0o, thay \u0111\u1ed5i header, ho\u1eb7c ch\u1eb7n). N\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y quy t\u1eafc n\u00e0o kh\u1edbp (table-miss), switch s\u1ebd \u0111\u00f3ng g\u00f3i ph\u1ea7n header c\u1ee7a g\u00f3i tin v\u00e0 g\u1eedi l\u00ean Controller.<\/p>\n<p>Controller s\u1ebd ph\u00e2n t\u00edch g\u00f3i tin, x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng \u0111i ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean topo m\u1ea1ng v\u00e0 c\u00e1c ch\u00ednh s\u00e1ch \u0111ang \u00e1p d\u1ee5ng. Sau \u0111\u00f3, Controller g\u1eedi m\u1ed9t quy t\u1eafc m\u1edbi xu\u1ed1ng switch (v\u00e0 c\u00e1c switch kh\u00e1c tr\u00ean \u0111\u01b0\u1eddng \u0111i). T\u1eeb th\u1eddi \u0111i\u1ec3m n\u00e0y, c\u00e1c g\u00f3i tin t\u01b0\u01a1ng t\u1ef1 ti\u1ebfp theo s\u1ebd \u0111\u01b0\u1ee3c switch x\u1eed l\u00fd tr\u1ef1c ti\u1ebfp \u1edf t\u1ed1c \u0111\u1ed9 ph\u1ea7n c\u1ee9ng m\u00e0 kh\u00f4ng c\u1ea7n h\u1ecfi l\u1ea1i Controller.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37040\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-2.jpg\" alt=\"Software-Defined Networking (SDN) 2\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-2.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-2-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-giao-thuc-pho-bien-trong-SDN\"><\/span>C\u00e1c giao th\u1ee9c ph\u1ed5 bi\u1ebfn trong SDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SDN d\u1ef1a tr\u00ean c\u00e1c giao th\u1ee9c chu\u1ea9n h\u00f3a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau c\u00f3 th\u1ec3 hi\u1ec3u v\u00e0 l\u00e0m vi\u1ec7c c\u00f9ng nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 giao th\u1ee9c quan tr\u1ecdng:<\/p>\n<p><strong>OpenFlow:<\/strong> \u0110\u00e2y l\u00e0 giao th\u1ee9c Southbound \u0111\u1ea7u ti\u00ean v\u00e0 n\u1ed5i ti\u1ebfng nh\u1ea5t trong th\u1ebf gi\u1edbi SDN. OpenFlow \u0111\u1ecbnh ngh\u0129a c\u00e1ch th\u1ee9c Controller giao ti\u1ebfp v\u1edbi switch \u0111\u1ec3 c\u1eadp nh\u1eadt b\u1ea3ng d\u00f2ng (flow table). Giao th\u1ee9c n\u00e0y cho ph\u00e9p thao t\u00e1c tr\u1ef1c ti\u1ebfp tr\u00ean c\u00e1c g\u00f3i tin \u1edf m\u1ee9c r\u1ea5t chi ti\u1ebft. Tuy nhi\u00ean, OpenFlow kh\u00f4ng ph\u1ea3i l\u00e0 giao th\u1ee9c duy nh\u1ea5t v\u00e0 hi\u1ec7n nay nhi\u1ec1u h\u1ec7 th\u1ed1ng SDN hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c kh\u00e1c.<\/p>\n<p><strong>NETCONF v\u00e0 RESTCONF:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c giao th\u1ee9c d\u00f9ng \u0111\u1ec3 c\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd thi\u1ebft b\u1ecb m\u1ea1ng. Ch\u00fang th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh d\u1eef li\u1ec7u YANG. Kh\u00e1c v\u1edbi OpenFlow t\u1eadp trung v\u00e0o lu\u1ed3ng g\u00f3i tin, NETCONF th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 c\u00e0i \u0111\u1eb7t c\u1ea5u h\u00ecnh t\u1ed5ng th\u1ec3 cho thi\u1ebft b\u1ecb.<\/p>\n<p><strong>OVSDB (Open vSwitch Database Management Protocol):<\/strong> Giao th\u1ee9c n\u00e0y chuy\u00ean d\u00f9ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c switch \u1ea3o (Open vSwitch) trong m\u00f4i tr\u01b0\u1eddng \u1ea3o h\u00f3a. N\u00f3 cho ph\u00e9p Controller t\u1ea1o m\u1edbi, c\u1ea5u h\u00ecnh ho\u1eb7c x\u00f3a c\u00e1c c\u1ed5ng v\u00e0 bridge tr\u00ean switch \u1ea3o.<\/p>\n<p><strong>REST API:<\/strong> \u1ede h\u01b0\u1edbng Northbound, REST API l\u00e0 chu\u1ea9n ph\u1ed5 bi\u1ebfn nh\u1ea5t. C\u00e1c Controller th\u01b0\u1eddng cung c\u1ea5p h\u1ec7 th\u1ed1ng REST API \u0111\u1ec3 c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng vi\u1ebft \u1ee9ng d\u1ee5ng m\u1ea1ng b\u1eb1ng c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh ph\u1ed5 th\u00f4ng nh\u01b0 Python, Java m\u00e0 kh\u00f4ng c\u1ea7n hi\u1ec3u s\u00e2u v\u1ec1 giao th\u1ee9c m\u1ea1ng ph\u1ee9c t\u1ea1p.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Uu-diem-cua-SDN\"><\/span>\u01afu \u0111i\u1ec3m c\u1ee7a SDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang m\u00f4 h\u00ecnh SDN mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch thi\u1ebft th\u1ef1c cho doanh nghi\u1ec7p v\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5. C\u00e1c \u01b0u \u0111i\u1ec3m n\u00e0y gi\u1ea3i quy\u1ebft tr\u1ef1c ti\u1ebfp nh\u1eefng \u0111i\u1ec3m ngh\u1ebdn c\u1ee7a m\u1ea1ng truy\u1ec1n th\u1ed1ng.<\/p>\n<p><strong>Qu\u1ea3n l\u00fd t\u1eadp trung v\u00e0 tr\u1ef1c quan:<\/strong> V\u1edbi SDN, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u1ea1ng t\u1eeb m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n duy nh\u1ea5t. Vi\u1ec7c c\u1ea5u h\u00ecnh, gi\u00e1m s\u00e1t v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi vi\u1ec7c ph\u1ea3i \u0111\u0103ng nh\u1eadp v\u00e0o t\u1eebng thi\u1ebft b\u1ecb ri\u00eang l\u1ebb.<\/p>\n<p><strong>T\u0103ng kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng h\u00f3a:<\/strong> SDN h\u1ed7 tr\u1ee3 l\u1eadp tr\u00ecnh h\u00f3a m\u1ea1ng l\u01b0\u1edbi. C\u00e1c quy tr\u00ecnh c\u1ea5p ph\u00e1t t\u00e0i nguy\u00ean, ph\u00e2n quy\u1ec1n truy c\u1eadp hay \u0111\u1ecbnh tuy\u1ebfn l\u1ea1i khi c\u00f3 s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng th\u00f4ng qua script ho\u1eb7c ph\u1ea7n m\u1ec1m. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng DevOps, n\u01a1i h\u1ea1 t\u1ea7ng c\u1ea7n \u0111\u01b0\u1ee3c tri\u1ec3n khai nhanh nh\u01b0 code.<\/p>\n<p><strong>Linh ho\u1ea1t trong tri\u1ec3n khai ch\u00ednh s\u00e1ch:<\/strong> Vi\u1ec7c thay \u0111\u1ed5i ch\u00ednh s\u00e1ch m\u1ea1ng (v\u00ed d\u1ee5: ch\u1eb7n m\u1ed9t d\u1ea3i IP, \u01b0u ti\u00ean b\u0103ng th\u00f4ng cho video) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c thi ngay l\u1eadp t\u1ee9c tr\u00ean to\u00e0n m\u1ea1ng ch\u1ec9 v\u1edbi v\u00e0i thao t\u00e1c t\u1ea1i Controller. H\u1ec7 th\u1ed1ng m\u1ea1ng tr\u1edf n\u00ean &#8220;\u0111\u1ed9ng&#8221; v\u00e0 ph\u1ea3n \u1ee9ng nhanh v\u1edbi c\u00e1c thay \u0111\u1ed5i kinh doanh.<\/p>\n<p><strong>Ti\u1ebft ki\u1ec7m chi ph\u00ed:<\/strong> SDN gi\u00fap gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh (OpEx) nh\u1edd t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 gi\u1ea3m thi\u1ec3u l\u1ed7i con ng\u01b0\u1eddi. Ngo\u00e0i ra, SDN c\u0169ng c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m chi ph\u00ed \u0111\u1ea7u t\u01b0 (CapEx) b\u1eb1ng c\u00e1ch cho ph\u00e9p s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng ph\u1ed5 th\u00f4ng (white-box switches) thay v\u00ec c\u00e1c thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u1eaft ti\u1ec1n, do ph\u1ea7n th\u00f4ng minh \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n sang ph\u1ea7n m\u1ec1m.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37041\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-3.jpg\" alt=\"Software-Defined Networking (SDN) 3\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-3.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-3-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Han-che-va-thach-thuc-cua-SDN\"><\/span>H\u1ea1n ch\u1ebf v\u00e0 th\u00e1ch th\u1ee9c c\u1ee7a SDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u00ean c\u1ea1nh nh\u1eefng l\u1ee3i \u00edch, SDN c\u0169ng t\u1ed3n t\u1ea1i nh\u1eefng h\u1ea1n ch\u1ebf v\u00e0 th\u00e1ch th\u1ee9c m\u00e0 t\u1ed5 ch\u1ee9c c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n<p><strong>Ph\u1ee5 thu\u1ed9c v\u00e0o Controller (Single Point of Failure):<\/strong> Do to\u00e0n b\u1ed9 tr\u00ed th\u00f4ng minh c\u1ee7a m\u1ea1ng t\u1eadp trung t\u1ea1i Controller, n\u1ebfu th\u00e0nh ph\u1ea7n n\u00e0y g\u1eb7p s\u1ef1 c\u1ed1, to\u00e0n b\u1ed9 m\u1ea1ng c\u00f3 th\u1ec3 b\u1ecb t\u00ea li\u1ec7t. \u0110\u1ec3 kh\u1eafc ph\u1ee5c, ng\u01b0\u1eddi ta th\u01b0\u1eddng ph\u1ea3i tri\u1ec3n khai Controller theo m\u00f4 h\u00ecnh c\u1ee5m (cluster) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng cao, nh\u01b0ng \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p.<\/p>\n<p><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p khi tri\u1ec3n khai ban \u0111\u1ea7u:<\/strong> Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i t\u1eeb m\u1ea1ng truy\u1ec1n th\u1ed1ng sang SDN kh\u00f4ng ph\u1ea3i l\u00e0 qu\u00e1 tr\u00ecnh \u0111\u01a1n gi\u1ea3n. Doanh nghi\u1ec7p th\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi m\u00f4i tr\u01b0\u1eddng lai (Hybrid) gi\u1eefa thi\u1ebft b\u1ecb c\u0169 v\u00e0 m\u1edbi. Vi\u1ec7c t\u00edch h\u1ee3p v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u00f2i h\u1ecfi k\u1ebf ho\u1ea1ch chi ti\u1ebft.<\/p>\n<p><strong>Y\u00eau c\u1ea7u \u0111\u1ed9i ng\u0169 c\u00f3 chuy\u00ean m\u00f4n m\u1edbi:<\/strong> Qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng quen thu\u1ed9c v\u1edbi d\u00f2ng l\u1ec7nh CLI (Command Line Interface). SDN y\u00eau c\u1ea7u k\u1ef9 s\u01b0 m\u1ea1ng ph\u1ea3i c\u00f3 th\u00eam ki\u1ebfn th\u1ee9c v\u1ec1 l\u1eadp tr\u00ecnh, API v\u00e0 c\u00e1c ng\u00f4n ng\u1eef nh\u01b0 Python. S\u1ef1 thi\u1ebfu h\u1ee5t nh\u00e2n s\u1ef1 c\u00f3 k\u1ef9 n\u0103ng k\u00e9p n\u00e0y l\u00e0 m\u1ed9t r\u00e0o c\u1ea3n l\u1edbn.<\/p>\n<p><strong>V\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt m\u1edbi:<\/strong> Controller tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau gi\u00e1 tr\u1ecb cao \u0111\u1ed1i v\u1edbi tin t\u1eb7c. N\u1ebfu chi\u1ebfm \u0111\u01b0\u1ee3c quy\u1ec1n ki\u1ec3m so\u00e1t Controller, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 thao t\u00fang to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u1ea1ng. Do \u0111\u00f3, vi\u1ec7c b\u1ea3o v\u1ec7 k\u00eanh giao ti\u1ebfp gi\u1eefa Controller v\u00e0 c\u00e1c thi\u1ebft b\u1ecb l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"So-sanh-SDN-va-mang-truyen-thong\"><\/span>So s\u00e1nh SDN v\u00e0 m\u1ea1ng truy\u1ec1n th\u1ed1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n s\u1ef1 kh\u00e1c bi\u1ec7t, ch\u00fang ta c\u00f3 th\u1ec3 xem x\u00e9t s\u1ef1 so s\u00e1nh d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed qu\u1ea3n l\u00fd, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 v\u1eadn h\u00e0nh.<\/p>\n<p>Trong m\u1ea1ng truy\u1ec1n th\u1ed1ng, m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n tr\u00ean t\u1eebng thi\u1ebft b\u1ecb. M\u1ed7i router t\u1ef1 trao \u0111\u1ed5i th\u00f4ng tin v\u1edbi c\u00e1c router l\u00e2n c\u1eadn \u0111\u1ec3 x\u00e2y d\u1ef1ng b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 \u1ed5n \u0111\u1ecbnh nh\u01b0ng thi\u1ebfu c\u00e1i nh\u00ecn t\u1ed5ng th\u1ec3. Ng\u01b0\u1ee3c l\u1ea1i, SDN t\u00e1ch r\u1eddi m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 t\u1eadp trung n\u00f3 l\u1ea1i. Controller nh\u00ecn th\u1ea5y to\u00e0n b\u1ed9 topo m\u1ea1ng v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh t\u1ed1i \u01b0u nh\u1ea5t cho to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n<p>V\u1ec1 kh\u1ea3 n\u0103ng c\u1ea5u h\u00ecnh, m\u1ea1ng truy\u1ec1n th\u1ed1ng ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng ho\u1eb7c c\u00e1c script \u0111\u01a1n gi\u1ea3n tr\u00ean t\u1eebng box. SDN s\u1eed d\u1ee5ng c\u00e1ch ti\u1ebfp c\u1eadn l\u1eadp tr\u00ecnh, cho ph\u00e9p c\u1ea5u h\u00ecnh h\u00e0ng lo\u1ea1t v\u00e0 t\u1ef1 \u0111\u1ed9ng d\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n.<\/p>\n<p>V\u1ec1 ph\u1ea7n c\u1ee9ng, m\u1ea1ng truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng g\u1eafn li\u1ec1n v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u1ed9c quy\u1ec1n c\u1ee7a t\u1eebng h\u00e3ng (Vendor Lock-in). C\u00e1c t\u00ednh n\u0103ng m\u1edbi ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng ho\u1eb7c firmware t\u1eeb h\u00e3ng. SDN c\u00f3 xu h\u01b0\u1edbng s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng m\u1edf ho\u1eb7c ph\u1ea7n c\u1ee9ng ph\u1ed5 th\u00f4ng, t\u00ednh n\u0103ng m\u1edbi \u0111\u01b0\u1ee3c tri\u1ec3n khai th\u00f4ng qua vi\u1ec7c c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m t\u1ea1i Controller.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37042\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-4.jpg\" alt=\"Software-Defined Networking (SDN) 4\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-4.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/12\/Software-Defined-Networking-SDN-4-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-thuc-te-cua-SDN\"><\/span>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a SDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SDN \u0111\u00e3 v\u01b0\u1ee3t qua giai \u0111o\u1ea1n th\u1eed nghi\u1ec7m v\u00e0 \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<p><strong>Trung t\u00e2m d\u1eef li\u1ec7u (Data Center):<\/strong> \u0110\u00e2y l\u00e0 n\u01a1i SDN \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng m\u1ea1nh m\u1ebd nh\u1ea5t. C\u00e1c \u00f4ng l\u1edbn c\u00f4ng ngh\u1ec7 nh\u01b0 Google, Facebook hay Amazon \u0111\u1ec1u s\u1eed d\u1ee5ng SDN \u0111\u1ec3 qu\u1ea3n l\u00fd h\u00e0ng tr\u0103m ngh\u00ecn m\u00e1y ch\u1ee7, t\u1ed1i \u01b0u h\u00f3a l\u01b0u l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<p><strong>Cloud Computing v\u00e0 ISP:<\/strong> C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Cloud s\u1eed d\u1ee5ng SDN \u0111\u1ec3 cung c\u1ea5p t\u00ednh n\u0103ng VPC (Virtual Private Cloud), cho ph\u00e9p kh\u00e1ch h\u00e0ng t\u1ef1 \u0111\u1ecbnh ngh\u0129a m\u1ea1ng ri\u00eang c\u1ee7a h\u1ecd tr\u00ean h\u1ea1 t\u1ea7ng chia s\u1ebb. T\u1ea1i Vi\u1ec7t Nam, c\u00e1c \u0111\u01a1n v\u1ecb cung c\u1ea5p h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u00e0 Cloud chuy\u00ean nghi\u1ec7p nh\u01b0 <strong>InterData<\/strong> c\u0169ng ch\u00fa tr\u1ecdng \u0111\u1ea7u t\u01b0 v\u00e0o c\u00f4ng ngh\u1ec7 m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t, \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh cao cho kh\u00e1ch h\u00e0ng doanh nghi\u1ec7p.<\/p>\n<p><strong>M\u1ea1ng doanh nghi\u1ec7p (Enterprise WAN):<\/strong> \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 SD-WAN (Software-Defined Wide Area Network). SD-WAN cho ph\u00e9p doanh nghi\u1ec7p k\u1ebft n\u1ed1i c\u00e1c chi nh\u00e1nh, v\u0103n ph\u00f2ng t\u1eeb xa m\u1ed9t c\u00e1ch an to\u00e0n, hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng \u0111a d\u1ea1ng c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n (Internet, 4G, MPLS) v\u00e0 \u0111i\u1ec1u ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng th\u00f4ng minh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SDN-co-lien-quan-gi-den-Cloud-Ao-hoa-va-NFV\"><\/span>SDN c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn Cloud, \u1ea2o h\u00f3a v\u00e0 NFV?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SDN th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn ho\u1eb7c \u0111\u00e1nh \u0111\u1ed3ng v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m nh\u01b0 Cloud hay NFV, nh\u01b0ng ch\u00fang l\u00e0 nh\u1eefng m\u1ea3nh gh\u00e9p kh\u00e1c nhau trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 v\u1ec1 h\u1ea1 t\u1ea7ng CNTT hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p><strong>SDN v\u00e0 \u1ea2o h\u00f3a (Virtualization):<\/strong> \u1ea2o h\u00f3a m\u00e1y ch\u1ee7 cho ph\u00e9p ch\u1ea1y nhi\u1ec1u m\u00e1y \u1ea3o tr\u00ean m\u1ed9t m\u00e1y v\u1eadt l\u00fd. SDN th\u1ef1c hi\u1ec7n \u0111i\u1ec1u t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng \u0111\u1ed1i v\u1edbi m\u1ea1ng: n\u00f3 tr\u1eebu t\u01b0\u1ee3ng h\u00f3a h\u1ea1 t\u1ea7ng m\u1ea1ng v\u1eadt l\u00fd th\u00e0nh c\u00e1c m\u1ea1ng \u1ea3o logic. SDN l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 m\u1ea1ng c\u00f3 th\u1ec3 b\u1eaft k\u1ecbp t\u1ed1c \u0111\u1ed9 c\u1ee7a \u1ea3o h\u00f3a m\u00e1y ch\u1ee7.<\/p>\n<p><strong>SDN v\u00e0 Cloud:<\/strong> Cloud Computing l\u00e0 m\u00f4 h\u00ecnh cung c\u1ea5p d\u1ecbch v\u1ee5. SDN l\u00e0 ki\u1ebfn tr\u00fac h\u1ea1 t\u1ea7ng gi\u00fap Cloud ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. Kh\u00f4ng c\u00f3 SDN, vi\u1ec7c cung c\u1ea5p d\u1ecbch v\u1ee5 Cloud s\u1ebd g\u1eb7p kh\u00f3 kh\u0103n l\u1edbn trong vi\u1ec7c t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 ph\u00e2n l\u1eadp kh\u00e1ch h\u00e0ng (multi-tenancy).<\/p>\n<p><strong>SDN v\u00e0 NFV (Network Functions Virtualization):<\/strong> NFV l\u00e0 vi\u1ec7c chuy\u1ec3n c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng chuy\u00ean d\u1ee5ng (nh\u01b0 Firewall c\u1ee9ng, Load Balancer c\u1ee9ng) th\u00e0nh c\u00e1c ph\u1ea7n m\u1ec1m ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7 ti\u00eau chu\u1ea9n. SDN v\u00e0 NFV b\u1ed5 tr\u1ee3 cho nhau: NFV cung c\u1ea5p c\u00e1c ch\u1ee9c n\u0103ng m\u1ea1ng d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n m\u1ec1m, c\u00f2n SDN \u0111i\u1ec1u ph\u1ed1i c\u00e1ch l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng \u0111i qua c\u00e1c chu\u1ed7i ch\u1ee9c n\u0103ng \u0111\u00f3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-nen-can-nhac-su-dung-SDN\"><\/span>Khi n\u00e0o n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng SDN?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang SDN kh\u00f4ng ph\u1ea3i l\u00e0 quy\u1ebft \u0111\u1ecbnh ph\u00f9 h\u1ee3p cho m\u1ecdi t\u1ed5 ch\u1ee9c. Doanh nghi\u1ec7p c\u1ea7n \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean nhu c\u1ea7u th\u1ef1c t\u1ebf v\u00e0 ngu\u1ed3n l\u1ef1c hi\u1ec7n c\u00f3.<\/p>\n<p>B\u1ea1n n\u00ean c\u00e2n nh\u1eafc SDN n\u1ebfu h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee7a b\u1ea1n c\u00f3 quy m\u00f4 l\u1edbn, ph\u1ee9c t\u1ea1p v\u00e0 y\u00eau c\u1ea7u thay \u0111\u1ed5i c\u1ea5u h\u00ecnh th\u01b0\u1eddng xuy\u00ean. C\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0 Data Center, Campus m\u1ea1ng l\u1edbn ho\u1eb7c c\u00e1c c\u00f4ng ty cung c\u1ea5p d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn l\u00e0 nh\u1eefng \u1ee9ng vi\u00ean s\u00e1ng gi\u00e1. Nhu c\u1ea7u t\u1ef1 \u0111\u1ed9ng h\u00f3a quy tr\u00ecnh v\u1eadn h\u00e0nh v\u00e0 t\u00edch h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kinh doanh c\u0169ng l\u00e0 \u0111\u1ed9ng l\u1ef1c \u0111\u1ec3 ch\u1ecdn SDN.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu m\u1ea1ng l\u01b0\u1edbi c\u1ee7a b\u1ea1n c\u00f3 quy m\u00f4 nh\u1ecf, \u00edt thay \u0111\u1ed5i, c\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n v\u00e0 ng\u00e2n s\u00e1ch h\u1ea1n h\u1eb9p, m\u00f4 h\u00ecnh m\u1ea1ng truy\u1ec1n th\u1ed1ng v\u1eabn l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn an to\u00e0n v\u00e0 ti\u1ebft ki\u1ec7m. Vi\u1ec7c tri\u1ec3n khai SDN trong c\u00e1c m\u00f4i tr\u01b0\u1eddng n\u00e0y c\u00f3 th\u1ec3 mang l\u1ea1i s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft m\u00e0 kh\u00f4ng \u0111em l\u1ea1i l\u1ee3i \u00edch r\u00f5 r\u1ec7t v\u1ec1 hi\u1ec7u qu\u1ea3 \u0111\u1ea7u t\u01b0.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-ve-SDN-FAQ\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 SDN (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"SDN-co-thay-the-hoan-toan-mang-truyen-thong-khong\"><\/span>SDN c\u00f3 thay th\u1ebf ho\u00e0n to\u00e0n m\u1ea1ng truy\u1ec1n th\u1ed1ng kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng ho\u00e0n to\u00e0n. SDN l\u00e0 m\u1ed9t s\u1ef1 ti\u1ebfn h\u00f3a ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf tri\u1ec7t \u0111\u1ec3 trong m\u1ed9t s\u1edbm m\u1ed9t chi\u1ec1u. Trong t\u01b0\u01a1ng lai g\u1ea7n, m\u00f4 h\u00ecnh m\u1ea1ng lai (Hybrid) k\u1ebft h\u1ee3p gi\u1eefa \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb truy\u1ec1n th\u1ed1ng v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a SDN s\u1ebd l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"SDN-co-phu-hop-doanh-nghiep-nho-khong\"><\/span>SDN c\u00f3 ph\u00f9 h\u1ee3p doanh nghi\u1ec7p nh\u1ecf kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng, c\u00e1c gi\u1ea3i ph\u00e1p SDN tr\u1ecdn g\u00f3i (full-stack) c\u00f3 chi ph\u00ed \u0111\u1ea7u t\u01b0 v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt cao, kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi doanh nghi\u1ec7p nh\u1ecf. Tuy nhi\u00ean, c\u00e1c bi\u1ebfn th\u1ec3 nh\u01b0 SD-WAN l\u1ea1i r\u1ea5t ph\u00f9 h\u1ee3p cho doanh nghi\u1ec7p nh\u1ecf c\u00f3 nhi\u1ec1u chi nh\u00e1nh c\u1ea7n k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh v\u00e0 ti\u1ebft ki\u1ec7m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"SDN-co-kho-trien-khai-khong\"><\/span>SDN c\u00f3 kh\u00f3 tri\u1ec3n khai kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong giai \u0111o\u1ea1n \u0111\u1ea7u. Vi\u1ec7c tri\u1ec3n khai SDN \u0111\u00f2i h\u1ecfi quy ho\u1ea1ch l\u1ea1i ki\u1ebfn tr\u00fac, thay \u0111\u1ed5i t\u01b0 duy v\u1eadn h\u00e0nh v\u00e0 \u0111\u00e0o t\u1ea1o nh\u00e2n s\u1ef1. Tuy nhi\u00ean, sau khi h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111i v\u00e0o ho\u1ea1t \u0111\u1ed9ng, vi\u1ec7c qu\u1ea3n l\u00fd h\u00e0ng ng\u00e0y s\u1ebd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ket-luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Software-Defined Networking (SDN) \u0111\u00e3 v\u00e0 \u0111ang thay \u0111\u1ed5i c\u0103n b\u1ea3n c\u00e1ch th\u1ee9c th\u1ebf gi\u1edbi x\u00e2y d\u1ef1ng v\u00e0 v\u1eadn h\u00e0nh m\u1ea1ng m\u00e1y t\u00ednh. B\u1eb1ng c\u00e1ch t\u00e1ch bi\u1ec7t l\u1edbp \u0111i\u1ec1u khi\u1ec3n kh\u1ecfi l\u1edbp v\u1eadt l\u00fd, SDN mang l\u1ea1i s\u1ef1 linh ho\u1ea1t, kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 hi\u1ec7u qu\u1ea3 qu\u1ea3n l\u00fd m\u00e0 c\u00e1c m\u1ea1ng truy\u1ec1n th\u1ed1ng kh\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. D\u00f9 v\u1eabn c\u00f2n nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 y\u00eau c\u1ea7u k\u1ef9 n\u0103ng nh\u00e2n s\u1ef1, xu h\u01b0\u1edbng chuy\u1ec3n d\u1ecbch sang c\u00e1c h\u1ea1 t\u1ea7ng \u0111\u1ecbnh ngh\u0129a b\u1eb1ng ph\u1ea7n m\u1ec1m l\u00e0 \u0111i\u1ec1u t\u1ea5t y\u1ebfu trong k\u1ef7 nguy\u00ean s\u1ed1.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 qu\u1ea3n tr\u1ecb m\u1ea1ng v\u00e0 l\u00e3nh \u0111\u1ea1o c\u00f4ng ngh\u1ec7, vi\u1ec7c hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a SDN l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 h\u1ea1 t\u1ea7ng th\u00f4ng minh. D\u00f9 l\u00e0 t\u1ef1 x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng Private Cloud hay s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p h\u1ea1 t\u1ea7ng chuy\u00ean nghi\u1ec7p nh\u01b0 <strong>InterData<\/strong>, t\u01b0 duy v\u1ec1 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c s\u1ebd l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 doanh nghi\u1ec7p th\u00edch \u1ee9ng nhanh ch\u00f3ng v\u1edbi t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng truy\u1ec1n th\u1ed1ng \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec1u th\u00e1ch th\u1ee9c l\u1edbn trong vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 v\u1eadn h\u00e0nh. S\u1ef1 gia t\u0103ng c\u1ee7a d\u1eef li\u1ec7u di \u0111\u1ed9ng, nhu c\u1ea7u \u1ea3o h\u00f3a m\u00e1y ch\u1ee7 v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y (Cloud Computing) \u0111\u00f2i h\u1ecfi h\u1ea1 t\u1ea7ng m\u1ea1ng ph\u1ea3i linh ho\u1ea1t<\/p>\n","protected":false},"author":2,"featured_media":37043,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-37036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=37036"}],"version-history":[{"count":2,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37036\/revisions"}],"predecessor-version":[{"id":37045,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/37036\/revisions\/37045"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/37043"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=37036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=37036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=37036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}