{"id":31849,"date":"2025-11-08T08:27:59","date_gmt":"2025-11-08T01:27:59","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=31849"},"modified":"2025-11-08T09:13:32","modified_gmt":"2025-11-08T02:13:32","slug":"switch-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/switch-la-gi\/","title":{"rendered":"Switch l\u00e0 g\u00ec? Vai tr\u00f2, ch\u1ee9c n\u0103ng &#038; So s\u00e1nh Switch vs Hub, Router"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\/switch-la-gi\/#Switch-la-gi\" >Switch 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\/switch-la-gi\/#Vai-tro-cua-switch-trong-mang-may-tinh\" >Vai tr\u00f2 c\u1ee7a switch trong m\u1ea1ng m\u00e1y t\u00ednh<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Ket-noi-cac-thiet-bi-mang\" >K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Tang-hieu-suat-mang\" >T\u0103ng hi\u1ec7u su\u1ea5t m\u1ea1ng<\/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\/switch-la-gi\/#Giam-loi-va-cai-thien-chat-luong-truyen-du-lieu\" >Gi\u1ea3m l\u1ed7i v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eef li\u1ec7u<\/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\/switch-la-gi\/#Tang-tinh-bao-mat\" >T\u0103ng t\u00ednh b\u1ea3o m\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Chia-nho-mien-dung-do-collision-domain\" >Chia nh\u1ecf mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 (collision domain)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Tiet-kiem-chi-phi-va-quan-ly-de-dang\" >Ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng<\/a><\/li><\/ul><\/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\/switch-la-gi\/#Chuc-nang-cua-switch-la-gi%E2%80%8B\" >Ch\u1ee9c n\u0103ng c\u1ee7a switch l\u00e0 g\u00ec\u200b?<\/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\/switch-la-gi\/#Loi-ich-khi-su-dung-switch-trong-he-thong-mang\" >L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng switch trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Tang-cuong-hieu-suat-va-bang-thong\" >T\u0103ng c\u01b0\u1eddng hi\u1ec7u su\u1ea5t v\u00e0 b\u0103ng th\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Cai-thien-bao-mat-mang\" >C\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Kha-nang-quan-ly-va-linh-hoat-cao\" >Kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd v\u00e0 linh ho\u1ea1t cao<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Toi-uu-hoa-chi-phi-va-tai-nguyen\" >T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed v\u00e0 t\u00e0i nguy\u00ean<\/a><\/li><\/ul><\/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\/switch-la-gi\/#Cac-loai-switch-mang-pho-bien\" >C\u00e1c lo\u1ea1i switch m\u1ea1ng ph\u1ed5 bi\u1ebfn<\/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\/switch-la-gi\/#Phan-loai-theo-Layer-Switch-Layer-2-va-Layer-3\" >Ph\u00e2n lo\u1ea1i theo Layer: Switch Layer 2 v\u00e0 Layer 3<\/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\/switch-la-gi\/#Phan-loai-theo-kha-nang-quan-ly\" >Ph\u00e2n lo\u1ea1i theo kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd<\/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\/switch-la-gi\/#Phan-loai-theo-tinh-nang\" >Ph\u00e2n lo\u1ea1i theo t\u00ednh n\u0103ng<\/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\/switch-la-gi\/#Diem-khac-nhau-cua-Switch-va-Hub-la-gi%E2%80%8B\" >\u0110i\u1ec3m kh\u00e1c nhau c\u1ee7a Switch v\u00e0 Hub l\u00e0 g\u00ec\u200b?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Su-khac-nhau-giua-Switch-va-Router\" >S\u1ef1 kh\u00e1c nhau gi\u1eefa Switch v\u00e0 Router<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Khac-biet-ve-Layer-hoat-dong-Layer-2-vs-Layer-3\" >Kh\u00e1c bi\u1ec7t v\u1ec1 Layer ho\u1ea1t \u0111\u1ed9ng (Layer 2 vs Layer 3)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Chuc-nang-chinh\" >Ch\u1ee9c n\u0103ng ch\u00ednh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Pham-vi-hoat-dong-va-muc-dich-su-dung\" >Ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Ung-dung-cua-switch-trong-thuc-te\" >\u1ee8ng d\u1ee5ng c\u1ee7a switch trong th\u1ef1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Tieu-chi-de-lua-chon-switch-mang-phu-hop\" >Ti\u00eau ch\u00ed \u0111\u1ec3 l\u1ef1a ch\u1ecdn switch m\u1ea1ng ph\u00f9 h\u1ee3p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#So-luong-cong\" >S\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Toc-do-cong\" >T\u1ed1c \u0111\u1ed9 c\u1ed5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Loai-switch\" >Lo\u1ea1i switch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Ho-tro-PoE-Power-over-Ethernet\" >H\u1ed7 tr\u1ee3 PoE (Power over Ethernet)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Cac-tinh-nang-mang-nang-cao\" >C\u00e1c t\u00ednh n\u0103ng m\u1ea1ng n\u00e2ng cao<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Thuong-hieu-va-ho-tro-ky-thuat\" >Th\u01b0\u01a1ng hi\u1ec7u v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Moi-truong-hoat-dong\" >M\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Kha-nang-mo-rong-va-tuong-thich\" >Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 t\u01b0\u01a1ng th\u00edch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Ngan-sach-dau-tu\" >Ng\u00e2n s\u00e1ch \u0111\u1ea7u t\u01b0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/#Chon-thuong-hieu-uy-tin\" >Ch\u1ecdn th\u01b0\u01a1ng hi\u1ec7u uy t\u00edn<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>Trong b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng m\u1ea1ng n\u00e0o \u2013 t\u1eeb v\u0103n ph\u00f2ng nh\u1ecf \u0111\u1ebfn trung t\u00e2m <a href=\"https:\/\/interdata.vn\/blog\/big-data-la-gi\/\">d\u1eef li\u1ec7u l\u1edbn<\/a> \u2013 Switch (thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch) lu\u00f4n \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t gi\u00fap k\u1ebft n\u1ed1i, qu\u1ea3n l\u00fd v\u00e0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb. C\u00f9ng InterData t\u00ecm hi\u1ec3u <strong><a href=\"https:\/\/interdata.vn\/blog\/switch-la-gi\/\">switch l\u00e0 g\u00ec<\/a>, <\/strong>vai tr\u00f2, ch\u1ee9c n\u0103ng c\u1ee7a Switch l\u00e0 g\u00ec, ph\u00e2n bi\u1ec7t c\u00e1c lo\u1ea1i switch, \u0111\u1ed3ng th\u1eddi so s\u00e1nh Switch v\u1edbi Hub, <a href=\"https:\/\/interdata.vn\/blog\/router-la-gi\/\">Router<\/a> trong h\u1ec7 th\u1ed1ng m\u1ea1ng. \u0110\u1ecdc ngay!<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Switch-la-gi\"><\/span>Switch l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Switch m\u1ea1ng (hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng quan tr\u1ecdng d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t m\u1ea1ng n\u1ed9i b\u1ed9 (LAN)<\/strong>. Switch m\u1ea1ng c\u00f3 vai tr\u00f2 gi\u1ed1ng nh\u01b0 m\u1ed9t c\u1ea3nh s\u00e1t giao th\u00f4ng, gi\u00fap \u0111i\u1ec1u h\u01b0\u1edbng c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u00fang n\u01a1i c\u1ea7n \u0111\u1ebfn m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<figure id=\"attachment_31863\" aria-describedby=\"caption-attachment-31863\" style=\"width: 780px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31863\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Switch-la-gi.webp\" alt=\"Switch l\u00e0 g\u00ec?\" width=\"780\" height=\"400\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Switch-la-gi.webp 780w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Switch-la-gi-300x154.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Switch-la-gi-768x394.webp 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Switch-la-gi-750x385.webp 750w\" sizes=\"auto, (max-width: 780px) 100vw, 780px\" \/><figcaption id=\"caption-attachment-31863\" class=\"wp-caption-text\">Switch l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>Kh\u00e1c v\u1edbi Hub \u2013 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng, Switch th\u00f4ng minh h\u01a1n khi ch\u1ec9 g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn c\u1ed5ng \u0111ang k\u1ebft n\u1ed1i v\u1edbi thi\u1ebft b\u1ecb c\u1ea7n nh\u1eadn, gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 gi\u1ea3m t\u1eafc ngh\u1ebdn m\u1ea1ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vai-tro-cua-switch-trong-mang-may-tinh\"><\/span>Vai tr\u00f2 c\u1ee7a switch trong m\u1ea1ng m\u00e1y t\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00e2u h\u1ecfi \u0111\u1eb7t ra khi t\u00ecm hi\u1ec3u v\u1ec1 switch l\u00e0: Switch c\u00f3 nhi\u1ec7m v\u1ee5 g\u00ec? Switch d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec? Switch trong m\u1ea1ng m\u00e1y t\u00ednh c\u00f3 vai tr\u00f2 g\u00ec? D\u01b0\u1edbi \u0111\u00e2y l\u00e0 vai tr\u00f2 c\u1ee7a switch\u00a0trong m\u1ea1ng m\u00e1y t\u00ednh:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ket-noi-cac-thiet-bi-mang\"><\/span>K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch li\u00ean k\u1ebft c\u00e1c host trong m\u1ea1ng LAN, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb giao ti\u1ebfp v\u1edbi nhau qua c\u00e1c c\u1ed5ng v\u1eadt l\u00fd c\u1ee7a switch, d\u1ef1a tr\u00ean <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-mac-la-gi\/\">\u0111\u1ecba ch\u1ec9 MAC<\/a> \u0111\u1ec3 nh\u1eadn bi\u1ebft v\u00e0 \u0111\u1ecbnh tuy\u1ebfn d\u1eef li\u1ec7u ch\u00ednh x\u00e1c \u0111\u1ebfn thi\u1ebft b\u1ecb \u0111\u00edch.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-hieu-suat-mang\"><\/span>T\u0103ng hi\u1ec7u su\u1ea5t m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch thi\u1ebft l\u1eadp c\u00e1c m\u1ea1ch \u1ea3o gi\u1eefa hai c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng, cho ph\u00e9p c\u00e1c k\u00eanh truy\u1ec1n d\u1eef li\u1ec7u ri\u00eang bi\u1ec7t \u0111\u1ed3ng th\u1eddi ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng l\u1eabn nhau, gi\u00fap gi\u1ea3m t\u1eafc ngh\u1ebdn m\u1ea1ng v\u00e0 t\u0103ng <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> cho t\u1eebng thi\u1ebft b\u1ecb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Giam-loi-va-cai-thien-chat-luong-truyen-du-lieu\"><\/span>Gi\u1ea3m l\u1ed7i v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eef li\u1ec7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch ki\u1ec3m tra l\u1ed7i trong c\u00e1c khung d\u1eef li\u1ec7u (frame) v\u00e0 ch\u1ec9 truy\u1ec1n d\u1eef li\u1ec7u ch\u00ednh x\u00e1c, nh\u1edd c\u01a1 ch\u1ebf l\u01b0u tr\u1eef v\u00e0 chuy\u1ec3n ti\u1ebfp (store-and-forward), t\u1eeb \u0111\u00f3 gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i trong m\u1ea1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-tinh-bao-mat\"><\/span>T\u0103ng t\u00ednh b\u1ea3o m\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1eb1ng c\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u ch\u1ec9 t\u1edbi c\u1ed5ng \u0111\u00edch d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 MAC, switch h\u1ea1n ch\u1ebf vi\u1ec7c d\u1eef li\u1ec7u b\u1ecb ph\u00e1t t\u00e1n tr\u00ean to\u00e0n m\u1ea1ng, gi\u00fap gi\u1ea3m nguy c\u01a1 b\u1ecb nghe l\u00e9n hay truy c\u1eadp tr\u00e1i ph\u00e9p. Switch qu\u1ea3n l\u00fd c\u00f2n h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/vlan-la-gi\/\">VLAN<\/a>, <a href=\"https:\/\/interdata.vn\/blog\/port-la-gi\/\">Port<\/a> Security nh\u1eb1m t\u0103ng c\u01b0\u1eddng an ninh m\u1ea1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chia-nho-mien-dung-do-collision-domain\"><\/span>Chia nh\u1ecf mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 (collision domain)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch <a href=\"https:\/\/interdata.vn\/blog\/network-slicing-la-gi\/\">ph\u00e2n chia m\u1ea1ng<\/a> th\u00e0nh nhi\u1ec1u segment nh\u1ecf v\u1edbi mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 ri\u00eang, cho ph\u00e9p nhi\u1ec1u thi\u1ebft b\u1ecb truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi m\u00e0 kh\u00f4ng xung \u0111\u1ed9t, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tiet-kiem-chi-phi-va-quan-ly-de-dang\"><\/span>Ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch gi\u00fap t\u1eadp trung k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb, t\u1ea1o m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c m\u1ea1ng hi\u1ec7u qu\u1ea3, n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u1ea1 t\u1ea7ng cho t\u1ed5 ch\u1ee9c.<\/p>\n<p>Switch l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, \u0111\u00f3ng vai tr\u00f2 nh\u01b0 &#8220;c\u1ea3nh s\u00e1t giao th\u00f4ng&#8221; ph\u00e2n lu\u1ed3ng d\u1eef li\u1ec7u, gi\u00fap m\u1ea1ng LAN ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh, hi\u1ec7u qu\u1ea3 v\u00e0 b\u1ea3o m\u1eadt h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Chuc-nang-cua-switch-la-gi%E2%80%8B\"><\/span>Ch\u1ee9c n\u0103ng c\u1ee7a switch l\u00e0 g\u00ec\u200b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Switch c\u00f3 ch\u1ee9c n\u0103ng g\u00ec? C\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a switch m\u1ea1ng (thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch) trong m\u1ea1ng m\u00e1y t\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Chuy\u1ec3n ti\u1ebfp khung d\u1eef li\u1ec7u ch\u00ednh x\u00e1c theo \u0111\u1ecba ch\u1ec9 MAC<\/strong>: Switch nh\u1eadn v\u00e0 \u0111\u1ecdc \u0111\u1ecba ch\u1ec9 MAC ngu\u1ed3n, \u0111\u00edch trong c\u00e1c frame d\u1eef li\u1ec7u r\u1ed3i chuy\u1ec3n ti\u1ebfp \u0111\u1ebfn \u0111\u00fang c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng, gi\u00fap d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111\u00fang \u0111\u00edch, tr\u00e1nh t\u1eafc ngh\u1ebdn m\u1ea1ng.<\/li>\n<li><strong>Ph\u00e2n chia m\u1ea1ng LAN th\u00e0nh c\u00e1c segment\/microsegment nh\u1ecf<\/strong>: Switch chia nh\u1ecf m\u1ea1ng th\u00e0nh c\u00e1c \u0111o\u1ea1n nh\u1ecf h\u01a1n, ri\u00eang bi\u1ec7t, gi\u00fap nhi\u1ec1u thi\u1ebft b\u1ecb truy\u1ec1n d\u1eef li\u1ec7u c\u00f9ng l\u00fac kh\u00f4ng g\u00e2y xung \u0111\u1ed9t, n\u00e2ng cao b\u0103ng th\u00f4ng v\u00e0 hi\u1ec7u su\u1ea5t m\u1ea1ng. &#8220;Microsegment&#8221; l\u00e0 m\u00f4i tr\u01b0\u1eddng m\u1ea1ng n\u01a1i m\u1ed7i thi\u1ebft b\u1ecb c\u00f3 b\u0103ng th\u00f4ng ri\u00eang bi\u1ec7t, kh\u00f4ng chia s\u1ebb collision domain nh\u01b0 hub.<\/li>\n<li><strong>Thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i m\u1ea1ng \u1ea3o (m\u1ea1ch \u1ea3o) gi\u1eefa hai c\u1ed5ng<\/strong>: Khi hai thi\u1ebft b\u1ecb li\u00ean l\u1ea1c, switch t\u1ea1o m\u1ed9t li\u00ean k\u1ebft \u1ea3o ri\u00eang bi\u1ec7t gi\u1eefa hai c\u1ed5ng, tr\u00e1nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c c\u1ed5ng kh\u00e1c, b\u1ea3o \u0111\u1ea3m l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng lu\u00f4n th\u00f4ng su\u1ed1t.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 song c\u00f4ng (Full Duplex)<\/strong>: Cho ph\u00e9p truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi tr\u00ean c\u00f9ng m\u1ed9t c\u1ed5ng, t\u0103ng hi\u1ec7u su\u1ea5t truy\u1ec1n t\u1ea3i so v\u1edbi thi\u1ebft b\u1ecb hub truy\u1ec1n th\u1ed1ng.<\/li>\n<li><strong>T\u1ef1 \u0111\u1ed9ng ki\u1ec3m tra l\u1ed7i v\u00e0 gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i frame<\/strong>: Switch \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 store-and-forward, ki\u1ec3m tra l\u1ed7i \u1edf frame tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp, lo\u1ea1i b\u1ecf frame b\u1ecb l\u1ed7i, t\u0103ng t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng.<\/li>\n<li><strong>M\u1edf r\u1ed9ng b\u0103ng th\u00f4ng v\u00e0 k\u1ebft n\u1ed1i \u0111a c\u1ed5ng<\/strong>: Switch c\u00f3 nhi\u1ec1u c\u1ed5ng k\u1ebft n\u1ed1i \u0111\u1ec3 li\u00ean k\u1ebft h\u00e0ng ch\u1ee5c thi\u1ebft b\u1ecb m\u1ed9t l\u00fac, \u0111\u1ed3ng th\u1eddi h\u1ed7 tr\u1ee3 li\u00ean k\u1ebft nhi\u1ec1u c\u1ed5ng v\u1eadt l\u00fd th\u00e0nh m\u1ed9t k\u00eanh logic (Link Aggregation) nh\u1eb1m t\u0103ng b\u0103ng th\u00f4ng v\u00e0 d\u1ef1 ph\u00f2ng.<\/li>\n<li><strong>Ph\u00e2n lo\u1ea1i v\u00e0 \u01b0u ti\u00ean l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng (QoS)<\/strong>: Tr\u00ean c\u00e1c switch qu\u1ea3n l\u00fd (managed switch), c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh \u0111\u1ec3 \u01b0u ti\u00ean c\u00e1c lo\u1ea1i l\u01b0u l\u01b0\u1ee3ng quan tr\u1ecdng nh\u01b0 tho\u1ea1i <a href=\"https:\/\/interdata.vn\/blog\/voip-la-gi\/\">VoIP<\/a>, video streaming gi\u00fap duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 VLAN (Virtual LAN)<\/strong>: Switch cho ph\u00e9p t\u1ea1o c\u00e1c m\u1ea1ng logic ri\u00eang bi\u1ec7t tr\u00ean c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb v\u1eadt l\u00fd, gi\u00fap c\u00f4 l\u1eadp l\u01b0u l\u01b0\u1ee3ng, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng thu\u1eadn ti\u1ec7n h\u01a1n.<\/li>\n<li><strong>T\u00ednh n\u0103ng b\u1ea3o v\u1ec7 m\u1ea1ng nh\u01b0 Spanning <a href=\"https:\/\/interdata.vn\/blog\/cau-truc-du-lieu-tree-cay\/\">Tree<\/a> Protocol (STP)<\/strong>: Gi\u00fap ph\u00e1t hi\u1ec7n v\u00e0 lo\u1ea1i b\u1ecf <a href=\"https:\/\/interdata.vn\/blog\/vong-lap-la-gi\/\">v\u00f2ng l\u1eb7p<\/a> m\u1ea1ng trong c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 nhi\u1ec1u \u0111\u01b0\u1eddng d\u1ef1 ph\u00f2ng, \u0111\u1ea3m b\u1ea3o m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>C\u1ea5p ngu\u1ed3n qua Ethernet (PoE) (\u0111\u1ed1i v\u1edbi switch h\u1ed7 tr\u1ee3)<\/strong>: Cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 camera IP, <a href=\"https:\/\/interdata.vn\/blog\/ip-telephony-la-gi\/\">\u0111i\u1ec7n tho\u1ea1i IP<\/a> qua c\u00e1p m\u1ea1ng, t\u0103ng t\u00ednh linh ho\u1ea1t v\u00e0 gi\u1ea3m chi ph\u00ed tri\u1ec3n khai.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 ph\u00e2n t\u1ea7ng m\u1ea1ng (theo m\u00f4 h\u00ecnh 3 l\u1edbp)<\/strong>: Switch c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp Access, Distribution ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/nhan-cpu-la-gi\/\">Core<\/a> trong ki\u1ebfn tr\u00fac m\u1ea1ng, \u0111\u1ea3m b\u1ea3o qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng, t\u1ed1c \u0111\u1ed9 cao v\u00e0 t\u00ednh d\u1ef1 ph\u00f2ng cho h\u1ec7 th\u1ed1ng m\u1ea1ng l\u1edbn.<\/li>\n<\/ul>\n<p>Switch kh\u00f4ng ch\u1ec9 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng chuy\u1ec3n m\u1ea1ch \u0111\u01a1n thu\u1ea7n m\u00e0 c\u00f2n \u0111\u1ea3m nh\u1eadn vai tr\u00f2 qu\u1ea3n l\u00fd, ph\u00e2n \u0111o\u1ea1n, t\u1ed1i \u01b0u b\u0103ng th\u00f4ng, \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt v\u00e0 \u1ed5n \u0111\u1ecbnh m\u1ea1ng trong c\u00e1c h\u1ec7 th\u1ed1ng LAN hi\u1ec7n \u0111\u1ea1i. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng doanh nghi\u1ec7p v\u00e0 t\u1ed5 ch\u1ee9c.<\/p>\n<figure id=\"attachment_31865\" aria-describedby=\"caption-attachment-31865\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31865\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Chuc-nang-noi-bat-cua-thiet-bi-switch.jpg\" alt=\"Ch\u1ee9c n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a thi\u1ebft b\u1ecb switch\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Chuc-nang-noi-bat-cua-thiet-bi-switch.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Chuc-nang-noi-bat-cua-thiet-bi-switch-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Chuc-nang-noi-bat-cua-thiet-bi-switch-768x480.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Chuc-nang-noi-bat-cua-thiet-bi-switch-750x469.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-31865\" class=\"wp-caption-text\">Ch\u1ee9c n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a thi\u1ebft b\u1ecb switch<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Loi-ich-khi-su-dung-switch-trong-he-thong-mang\"><\/span>L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng switch trong h\u1ec7 th\u1ed1ng m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S\u1eed d\u1ee5ng switch thay v\u00ec c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u0169 nh\u01b0 hub mang l\u1ea1i r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3, gi\u00fap n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-cuong-hieu-suat-va-bang-thong\"><\/span>T\u0103ng c\u01b0\u1eddng hi\u1ec7u su\u1ea5t v\u00e0 b\u0103ng th\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 l\u1ee3i \u00edch r\u00f5 r\u00e0ng nh\u1ea5t. Nh\u1edd kh\u1ea3 n\u0103ng chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u00edch, switch gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng c\u1ea7n thi\u1ebft trong m\u1ea1ng. M\u1ed7i c\u1ed5ng tr\u00ean switch ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 ri\u00eang bi\u1ec7t, cho ph\u00e9p c\u00e1c c\u1eb7p thi\u1ebft b\u1ecb kh\u00e1c nhau giao ti\u1ebfp \u0111\u1ed3ng th\u1eddi m\u00e0 kh\u00f4ng b\u1ecb xung \u0111\u1ed9t. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn:<\/p>\n<ul>\n<li><strong>T\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111i nhanh h\u01a1n, gi\u1ea3m \u0111\u1ed9 tr\u1ec5.<\/li>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a b\u0103ng th\u00f4ng:<\/strong> B\u0103ng th\u00f4ng m\u1ea1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 h\u01a1n, kh\u00f4ng b\u1ecb l\u00e3ng ph\u00ed.<\/li>\n<li><strong>C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0 h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao nh\u01b0 video conference, truy\u1ec1n t\u1ea3i file l\u1edbn.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cai-thien-bao-mat-mang\"><\/span>C\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o m\u1eadt chuy\u00ean bi\u1ec7t nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/tuong-lua-firewall\/\">t\u01b0\u1eddng l\u1eeda<\/a>, switch v\u1eabn g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n b\u1ea3o m\u1eadt m\u1ea1ng theo m\u1ed9t s\u1ed1 c\u00e1ch:<\/p>\n<ul>\n<li><strong>Gi\u1ea3m r\u1ee7i ro nghe l\u00e9n:<\/strong> V\u00ec d\u1eef li\u1ec7u ch\u1ec9 \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn c\u1ed5ng \u0111\u00edch, nguy c\u01a1 c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng li\u00ean quan thu th\u1eadp \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u tr\u00ean m\u1ea1ng s\u1ebd gi\u1ea3m \u0111i \u0111\u00e1ng k\u1ec3 so v\u1edbi hub (n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e1t t\u00e1n \u0111\u1ebfn m\u1ecdi c\u1ed5ng).<\/li>\n<li><strong>T\u00ednh n\u0103ng b\u1ea3o m\u1eadt n\u00e2ng cao:<\/strong> C\u00e1c <strong>managed switch<\/strong> cung c\u1ea5p nhi\u1ec1u t\u00ednh n\u0103ng nh\u01b0 Port Security (ch\u1ec9 cho ph\u00e9p c\u00e1c \u0111\u1ecba ch\u1ec9 MAC c\u1ee5 th\u1ec3 truy c\u1eadp v\u00e0o c\u1ed5ng), <a href=\"https:\/\/interdata.vn\/blog\/802-1x-la-gi\/\">802.1X<\/a> (x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng\/thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi cho ph\u00e9p truy c\u1eadp m\u1ea1ng), <a href=\"https:\/\/interdata.vn\/blog\/acl-la-gi\/\">ACL<\/a> (Access Control <a href=\"https:\/\/interdata.vn\/blog\/list-trong-python\/\">List<\/a>) gi\u00fap ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng c\u01a1 b\u1ea3n.<\/li>\n<li><strong>Ph\u00e2n \u0111o\u1ea1n m\u1ea1ng v\u1edbi VLAN:<\/strong> Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp, <strong>VLAN<\/strong> gi\u00fap c\u00f4 l\u1eadp c\u00e1c nh\u00f3m ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb, ng\u0103n ch\u1eb7n s\u1ef1 l\u00e2y lan c\u1ee7a c\u00e1c m\u1ed1i \u0111e d\u1ecda trong to\u00e0n b\u1ed9 m\u1ea1ng.<\/li>\n<\/ul>\n<figure id=\"attachment_31866\" aria-describedby=\"caption-attachment-31866\" style=\"width: 779px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31866\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Loi-ich-khi-su-dung-switch-trong-he-thong-mang.jpg\" alt=\"L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng switch trong h\u1ec7 th\u1ed1ng m\u1ea1ng\" width=\"779\" height=\"536\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Loi-ich-khi-su-dung-switch-trong-he-thong-mang.jpg 779w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Loi-ich-khi-su-dung-switch-trong-he-thong-mang-300x206.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Loi-ich-khi-su-dung-switch-trong-he-thong-mang-768x528.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Loi-ich-khi-su-dung-switch-trong-he-thong-mang-750x516.jpg 750w\" sizes=\"auto, (max-width: 779px) 100vw, 779px\" \/><figcaption id=\"caption-attachment-31866\" class=\"wp-caption-text\">L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng switch trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Kha-nang-quan-ly-va-linh-hoat-cao\"><\/span>Kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd v\u00e0 linh ho\u1ea1t cao<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c <strong>managed switch<\/strong> cung c\u1ea5p m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 t\u00f9y ch\u1ec9nh m\u1ea1ng c\u1ee7a m\u00ecnh:<\/p>\n<ul>\n<li><strong>C\u1ea5u h\u00ecnh linh ho\u1ea1t:<\/strong> D\u1ec5 d\u00e0ng c\u1ea5u h\u00ecnh c\u00e1c th\u00f4ng s\u1ed1 m\u1ea1ng nh\u01b0 VLAN, QoS, Port Security, Link Aggregation, v.v.<\/li>\n<li><strong>Gi\u00e1m s\u00e1t v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/strong> C\u00f3 th\u1ec3 theo d\u00f5i l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, t\u00ecnh tr\u1ea1ng c\u1ed5ng, ph\u00e1t hi\u1ec7n v\u00e0 ch\u1ea9n \u0111o\u00e1n l\u1ed7i nhanh ch\u00f3ng th\u00f4ng qua giao di\u1ec7n qu\u1ea3n l\u00fd.<\/li>\n<li><strong>M\u1edf r\u1ed9ng d\u1ec5 d\u00e0ng:<\/strong> Kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i th\u00eam thi\u1ebft b\u1ecb, m\u1edf r\u1ed9ng m\u1ea1ng khi nhu c\u1ea7u ph\u00e1t tri\u1ec3n.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Toi-uu-hoa-chi-phi-va-tai-nguyen\"><\/span>T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed v\u00e0 t\u00e0i nguy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1eb7c d\u00f9 \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u v\u00e0o m\u1ed9t switch c\u00f3 th\u1ec3 cao h\u01a1n hub, nh\u01b0ng v\u1ec1 l\u00e2u d\u00e0i, switch l\u1ea1i gi\u00fap t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed v\u00e0 t\u00e0i nguy\u00ean:<\/p>\n<ul>\n<li><strong>Gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh:<\/strong> Hi\u1ec7u su\u1ea5t cao h\u01a1n, \u00edt t\u1eafc ngh\u1ebdn h\u01a1n gi\u00fap gi\u1ea3m th\u1eddi gian kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 t\u0103ng n\u0103ng su\u1ea5t lao \u0111\u1ed9ng.<\/li>\n<li><strong>T\u1eadn d\u1ee5ng t\u1ed1i \u0111a b\u0103ng th\u00f4ng:<\/strong> Kh\u00f4ng l\u00e3ng ph\u00ed b\u0103ng th\u00f4ng, gi\u00fap tr\u00ec ho\u00e3n vi\u1ec7c n\u00e2ng c\u1ea5p \u0111\u01b0\u1eddng truy\u1ec1n Internet ho\u1eb7c thi\u1ebft b\u1ecb \u0111\u1eaft ti\u1ec1n h\u01a1n.<\/li>\n<li><strong>Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng:<\/strong> Nhi\u1ec1u switch hi\u1ec7n \u0111\u1ea1i c\u00f3 t\u00ednh n\u0103ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Energy-Efficient_Ethernet\" rel=\"nofollow noopener\" target=\"_blank\">Energy Efficient Ethernet<\/a> &#8211; EEE) gi\u00fap gi\u1ea3m ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac-loai-switch-mang-pho-bien\"><\/span>C\u00e1c lo\u1ea1i switch m\u1ea1ng ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i switch m\u1ea1ng kh\u00e1c nhau, \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean nhi\u1ec1u ti\u00eau ch\u00ed \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng nhu c\u1ea7u s\u1eed d\u1ee5ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phan-loai-theo-Layer-Switch-Layer-2-va-Layer-3\"><\/span>Ph\u00e2n lo\u1ea1i theo Layer: Switch Layer 2 v\u00e0 Layer 3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4>Switch Layer 2<\/h4>\n<p><strong>Switch Layer 2<\/strong> (chuy\u1ec3n m\u1ea1ch t\u1ea7ng 2) l\u00e0 lo\u1ea1i switch ph\u1ed5 bi\u1ebfn nh\u1ea5t, ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng li\u00ean k\u1ebft d\u1eef li\u1ec7u c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/mo-hinh-osi-la-gi\/\">m\u00f4 h\u00ecnh OSI<\/a>. N\u00f3 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp g\u00f3i tin trong c\u00f9ng m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9 (LAN).<\/p>\n<p>C\u00e1c <strong>switch Layer 2<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m switch truy c\u1eadp (access layer switch), k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i nh\u01b0 m\u00e1y t\u00ednh, m\u00e1y in. V\u00ed d\u1ee5: M\u1ed9t switch 24 c\u1ed5ng trong v\u0103n ph\u00f2ng nh\u1ecf ch\u1ec9 \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u00e1y t\u00ednh c\u1ee7a nh\u00e2n vi\u00ean.<\/p>\n<h4>Switch Layer 3<\/h4>\n<p><strong>Switch Layer 3<\/strong> (chuy\u1ec3n m\u1ea1ch t\u1ea7ng 3) k\u1ebft h\u1ee3p c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a switch Layer 2 v\u1edbi kh\u1ea3 n\u0103ng \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a router. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng m\u1ea1ng (Layer 3) v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a> \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp g\u00f3i tin gi\u1eefa c\u00e1c m\u1ea1ng con (VLAN) kh\u00e1c nhau.<\/p>\n<p><strong>Switch Layer 3<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m switch ph\u00e2n ph\u1ed1i (distribution layer switch) ho\u1eb7c switch l\u00f5i (core layer switch) trong c\u00e1c m\u1ea1ng l\u1edbn, n\u01a1i c\u1ea7n hi\u1ec7u su\u1ea5t \u0111\u1ecbnh tuy\u1ebfn cao gi\u1eefa c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng. L\u1ee3i \u00edch ch\u00ednh l\u00e0 t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh tuy\u1ebfn cao h\u01a1n so v\u1edbi router ph\u1ea7n m\u1ec1m, gi\u00fap gi\u1ea3m \u0111\u1ed9 tr\u1ec5 khi giao ti\u1ebfp gi\u1eefa c\u00e1c VLAN.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phan-loai-theo-kha-nang-quan-ly\"><\/span>Ph\u00e2n lo\u1ea1i theo kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4>Switch Unmanaged<\/h4>\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i switch c\u01a1 b\u1ea3n nh\u1ea5t, ho\u1ea1t \u0111\u1ed9ng theo ki\u1ec3u &#8220;c\u1eafm v\u00e0 ch\u1ea1y&#8221; (plug-and-play), n\u00f3 kh\u00f4ng y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh v\u00e0 kh\u00f4ng c\u00f3 giao di\u1ec7n qu\u1ea3n l\u00fd. Unmanaged switch ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng gia \u0111\u00ecnh ho\u1eb7c v\u0103n ph\u00f2ng nh\u1ecf, n\u01a1i ch\u1ec9 c\u1ea7n k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n.<\/p>\n<p>V\u00ed d\u1ee5: B\u1ea1n mua m\u1ed9t switch 5 c\u1ed5ng v\u1ec1 \u0111\u1ec3 chia s\u1ebb k\u1ebft n\u1ed1i internet cho TV v\u00e0 console ch\u01a1i game.<\/p>\n<h4>Switch Managed<\/h4>\n<p>Managed switch cung c\u1ea5p <strong>\u0111\u1ea7y \u0111\u1ee7 c\u00e1c t\u00ednh n\u0103ng qu\u1ea3n l\u00fd v\u00e0 c\u1ea5u h\u00ecnh n\u00e2ng cao<\/strong> th\u00f4ng qua giao di\u1ec7n d\u00f2ng l\u1ec7nh (CLI &#8211; Command Line Interface) ho\u1eb7c giao di\u1ec7n \u0111\u1ed3 h\u1ecda web (GUI &#8211; Graphical <a href=\"https:\/\/interdata.vn\/blog\/ui-la-gi\/\">User Interface<\/a>).<\/p>\n<p>C\u00e1c t\u00ednh n\u0103ng nh\u01b0 VLAN, QoS, STP, SNMP (Simple Network Management Protocol) cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng c\u00f3 to\u00e0n quy\u1ec1n ki\u1ec3m so\u00e1t v\u00e0 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng. Lo\u1ea1i n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c doanh nghi\u1ec7p l\u1edbn v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/data-center-la-gi\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a>.<\/p>\n<h4>Switch Smart<\/h4>\n<p>Smart switch l\u00e0 m\u1ed9t ph\u00e2n kh\u00fac n\u1eb1m gi\u1eefa unmanaged v\u00e0 managed switch, ch\u00fang cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng qu\u1ea3n l\u00fd c\u01a1 b\u1ea3n v\u00e0 th\u01b0\u1eddng c\u00f3 giao di\u1ec7n web \u0111\u1ec3 c\u1ea5u h\u00ecnh, nh\u01b0ng kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ph\u1ee9c t\u1ea1p nh\u01b0 managed switch cao c\u1ea5p.<\/p>\n<p>\u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t cho c\u00e1c doanh nghi\u1ec7p nh\u1ecf v\u00e0 v\u1eeba (SMB) mu\u1ed1n c\u00f3 kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ea7u t\u01b0 qu\u00e1 nhi\u1ec1u v\u00e0o thi\u1ebft b\u1ecb ho\u1eb7c ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phan-loai-theo-tinh-nang\"><\/span>Ph\u00e2n lo\u1ea1i theo t\u00ednh n\u0103ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4>Workgroup Switch<\/h4>\n<p>Workgroup Switch l\u00e0 lo\u1ea1i switch \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u00e1y t\u00ednh v\u1edbi nhau trong c\u00f9ng m\u1ed9t nh\u00f3m m\u1ea1ng theo chi\u1ec1u ngang. Nh\u1edd \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y, thi\u1ebft b\u1ecb kh\u00f4ng c\u1ea7n t\u1edbi kh\u1ea3 n\u0103ng x\u1eed l\u00fd qu\u00e1 m\u1ea1nh ho\u1eb7c b\u1ed9 nh\u1edb l\u1edbn, v\u00ec nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a n\u00f3 ch\u1ec9 xoay quanh vi\u1ec7c duy tr\u00ec k\u1ebft n\u1ed1i c\u01a1 b\u1ea3n trong m\u1ed9t m\u1ea1ng nh\u1ecf.<\/p>\n<h4>Segment Switch<\/h4>\n<p>Segment Switch c\u00f3 nhi\u1ec7m v\u1ee5 k\u1ebft n\u1ed1i c\u00e1c Hub ho\u1eb7c c\u00e1c Workgroup Switch l\u1ea1i v\u1edbi nhau, t\u1ea1o th\u00e0nh m\u1ed9t t\u1ea7ng k\u1ebft n\u1ed1i th\u1ee9 hai trong ki\u1ebfn tr\u00fac m\u1ea1ng.<\/p>\n<p>Ch\u00ednh v\u00ec v\u1eady, thi\u1ebft b\u1ecb n\u00e0y c\u1ea7n kh\u1ea3 n\u0103ng x\u1eed l\u00fd nhanh h\u01a1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n hi\u1ec7u qu\u1ea3.<\/p>\n<h4>Backbone Switch<\/h4>\n<p>Backbone Switch \u0111\u1ea3m nh\u1eadn vai tr\u00f2 li\u00ean k\u1ebft c\u00e1c Segment Switch v\u1edbi nhau, ho\u1ea1t \u0111\u1ed9ng \u1edf l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ea1ng, v\u1edbi vai tr\u00f2 quan tr\u1ecdng n\u00e0y, n\u00f3 c\u1ea7n c\u00f3 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd c\u1ef1c cao v\u00e0 b\u1ed9 nh\u1edb l\u1edbn \u0111\u1ec3 l\u01b0u tr\u1eef nhi\u1ec1u \u0111\u1ecba ch\u1ec9 c\u0169ng nh\u01b0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua l\u1ea1i gi\u1eefa c\u00e1c m\u1ea1ng m\u1ed9t c\u00e1ch tr\u01a1n tru v\u00e0 k\u1ecbp th\u1eddi.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Diem-khac-nhau-cua-Switch-va-Hub-la-gi%E2%80%8B\"><\/span>\u0110i\u1ec3m kh\u00e1c nhau c\u1ee7a Switch v\u00e0 Hub l\u00e0 g\u00ec\u200b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u01afu \u0111i\u1ec3m ch\u00ednh c\u1ee7a switch so v\u1edbi hub l\u00e0 g\u00ec? C\u00f9ng t\u00ecm hi\u1ec3u <a href=\"https:\/\/interdata.vn\/blog\/so-sanh-hub-va-switch\/\">switch v\u00e0 hub<\/a> qua c\u00e1c kh\u00eda c\u1ea1nh sau:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 16px; border: 1px solid #0D6EFD; border-radius: 12px; overflow: hidden;\">\n<caption style=\"caption-side: top; text-align: left; font-weight: 600; padding: 12px 10px; color: #0d6efd;\">So s\u00e1nh Hub v\u00e0 Switch theo c\u00e1c ti\u00eau ch\u00ed c\u01a1 b\u1ea3n<\/caption>\n<thead>\n<tr>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px 10px; border-right: 1px solid #0b5ed7; text-align: center;\">Ti\u00eau ch\u00ed<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px 10px; border-right: 1px solid #0b5ed7; text-align: center;\">Hub<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px 10px; text-align: center;\">Switch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #F7FAFF;\">\n<td style=\"padding: 12px 10px; border-top: 1px solid #0D6EFD; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">L\u1edbp ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #0D6EFD; border-right: 1px solid #E0ECFF;\">Ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp v\u1eadt l\u00fd (Physical Layer &#8211; l\u1edbp 1 c\u1ee7a m\u00f4 h\u00ecnh OSI)<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #0D6EFD;\">Ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u (<a href=\"https:\/\/interdata.vn\/blog\/data-link-layer-la-gi\/\">Data Link Layer<\/a> &#8211; l\u1edbp 2), c\u00f3 th\u1ec3 c\u1ea3 l\u1edbp m\u1ea1ng (Layer 3)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">C\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng, kh\u00f4ng ph\u00e2n bi\u1ec7t \u0111\u00edch g\u1eedi (broadcast)<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">Ch\u1ec9 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ebfn c\u1ed5ng \u0111\u00edch d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 MAC (unicast)<\/td>\n<\/tr>\n<tr style=\"background: #F7FAFF;\">\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">Ch\u1ebf \u0111\u1ed9 truy\u1ec1n<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">B\u00e1n song c\u00f4ng (Half Duplex)<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">C\u00f3 th\u1ec3 l\u00e0 b\u00e1n song c\u00f4ng ho\u1eb7c song c\u00f4ng to\u00e0n ph\u1ea7n (Full Duplex)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">Kh\u1ea3 n\u0103ng <a href=\"https:\/\/interdata.vn\/blog\/data-preprocessing-la-gi\/\">x\u1eed l\u00fd d\u1eef li\u1ec7u<\/a><\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng l\u1ecdc ho\u1eb7c x\u1eed l\u00fd d\u1eef li\u1ec7u th\u00f4ng minh<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">C\u00f3 kh\u1ea3 n\u0103ng l\u1ecdc, ph\u00e2n t\u00edch \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh g\u1eedi d\u1eef li\u1ec7u \u0111\u00fang c\u1ed5ng<\/td>\n<\/tr>\n<tr style=\"background: #F7FAFF;\">\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">Thi\u1ebft b\u1ecb<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Thi\u1ebft b\u1ecb th\u1ee5 \u0111\u1ed9ng<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">Thi\u1ebft b\u1ecb ch\u1ee7 \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">T\u1ed1c \u0111\u1ed9 truy\u1ec1n<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Th\u01b0\u1eddng 10 Mbps<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">T\u1eeb 10 Mbps \u0111\u1ebfn 1 Gbps ho\u1eb7c h\u01a1n<\/td>\n<\/tr>\n<tr style=\"background: #F7FAFF;\">\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ea1ng<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">D\u1ec5 g\u00e2y xung \u0111\u1ed9t, t\u1eafc ngh\u1ebdn m\u1ea1ng do ph\u00e1t t\u1edbi t\u1ea5t c\u1ea3 c\u1ed5ng<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">Gi\u1ea3m xung \u0111\u1ed9t v\u00e0 t\u1eafc ngh\u1ebdn do ch\u1ec9 chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u \u0111\u1ebfn thi\u1ebft b\u1ecb \u0111\u00edch<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">Kh\u1ea3 n\u0103ng t\u1ea1o VLAN<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Kh\u00f4ng<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">C\u00f3 th\u1ec3 t\u1ea1o m\u1ea1ng LAN \u1ea3o VLAN<\/td>\n<\/tr>\n<tr style=\"background: #F7FAFF;\">\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF; font-weight: 600; color: #0d6efd;\">B\u1ed9 nh\u1edb \u0111\u1ecba ch\u1ec9 MAC<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF; border-right: 1px solid #E0ECFF;\">Kh\u00f4ng l\u01b0u \u0111\u1ecba ch\u1ec9 MAC<\/td>\n<td style=\"padding: 12px 10px; border-top: 1px solid #E0ECFF;\">L\u01b0u b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 qu\u1ea3n l\u00fd vi\u1ec7c chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Hub d\u1eebng l\u1ea1i \u1edf vi\u1ec7c k\u1ebft n\u1ed1i v\u1eadt l\u00fd \u0111\u01a1n gi\u1ea3n, truy\u1ec1n d\u1eef li\u1ec7u t\u1edbi m\u1ecdi thi\u1ebft b\u1ecb n\u00ean hi\u1ec7u su\u1ea5t th\u1ea5p v\u00e0 g\u00e2y xung \u0111\u1ed9t m\u1ea1ng. Switch th\u00f4ng minh h\u01a1n, bi\u1ebft \u0111\u1ecba ch\u1ec9 \u0111\u00edch v\u00e0 qu\u1ea3n l\u00fd truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 h\u01a1n, t\u1ed1c \u0111\u1ed9 cao h\u01a1n, \u0111\u1ed3ng th\u1eddi h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng m\u1ea1ng ti\u00ean ti\u1ebfn nh\u01b0 VLAN. V\u00ec v\u1eady, trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, switch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n hub.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Su-khac-nhau-giua-Switch-va-Router\"><\/span>S\u1ef1 kh\u00e1c nhau gi\u1eefa Switch v\u00e0 Router<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1eb7c d\u00f9 c\u1ea3 <strong>switch<\/strong> v\u00e0 <strong>router<\/strong> \u0111\u1ec1u l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb m\u1ea1ng quan tr\u1ecdng, ch\u00fang c\u00f3 vai tr\u00f2 v\u00e0 ch\u1ee9c n\u0103ng r\u1ea5t kh\u00e1c nhau trong m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng. Vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa router v\u00e0 switch l\u00e0 g\u00ec l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng hi\u1ec7u qu\u1ea3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Khac-biet-ve-Layer-hoat-dong-Layer-2-vs-Layer-3\"><\/span>Kh\u00e1c bi\u1ec7t v\u1ec1 Layer ho\u1ea1t \u0111\u1ed9ng (Layer 2 vs Layer 3)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n nh\u1ea5t:<\/p>\n<ul>\n<li><strong>Switch:<\/strong> Ch\u1ee7 y\u1ebfu ho\u1ea1t \u0111\u1ed9ng \u1edf <strong>Layer 2<\/strong> (T\u1ea7ng li\u00ean k\u1ebft d\u1eef li\u1ec7u) c\u1ee7a m\u00f4 h\u00ecnh OSI. N\u00f3 s\u1eed d\u1ee5ng <strong>\u0111\u1ecba ch\u1ec9 MAC<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u trong c\u00f9ng m\u1ed9t m\u1ea1ng LAN (m\u1ea1ng n\u1ed9i b\u1ed9).<\/li>\n<li><strong>Router:<\/strong> Ho\u1ea1t \u0111\u1ed9ng \u1edf <strong>Layer 3<\/strong> (T\u1ea7ng m\u1ea1ng) c\u1ee7a m\u00f4 h\u00ecnh OSI. N\u00f3 s\u1eed d\u1ee5ng <strong>\u0111\u1ecba ch\u1ec9 IP<\/strong> \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u1ea1ng kh\u00e1c nhau (v\u00ed d\u1ee5: m\u1ea1ng LAN c\u1ee7a b\u1ea1n v\u00e0 Internet, ho\u1eb7c gi\u1eefa c\u00e1c m\u1ea1ng LAN ri\u00eang bi\u1ec7t).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Chuc-nang-chinh\"><\/span>Ch\u1ee9c n\u0103ng ch\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Switch:<\/strong> Ch\u1ee9c n\u0103ng ch\u00ednh l\u00e0 <strong>chuy\u1ec3n m\u1ea1ch c\u1ee5c b\u1ed9<\/strong>. N\u00f3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t m\u1ea1ng LAN v\u00e0 chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u gi\u1eefa ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, t\u1ea1o ra c\u00e1c mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 nh\u1ecf. N\u00f3 gi\u00fap c\u00e1c thi\u1ebft b\u1ecb trong m\u1ea1ng n\u1ed9i b\u1ed9 giao ti\u1ebfp v\u1edbi nhau nhanh ch\u00f3ng.<\/li>\n<li><strong>Router:<\/strong> Ch\u1ee9c n\u0103ng ch\u00ednh l\u00e0 <strong>\u0111\u1ecbnh tuy\u1ebfn li\u00ean m\u1ea1ng<\/strong>. N\u00f3 ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u00ecm \u0111\u01b0\u1eddng \u0111i t\u1ed1t nh\u1ea5t cho c\u00e1c g\u00f3i d\u1eef li\u1ec7u khi ch\u00fang c\u1ea7n di chuy\u1ec3n t\u1eeb m\u1ed9t m\u1ea1ng n\u00e0y sang m\u1ed9t m\u1ea1ng kh\u00e1c. <strong>Router<\/strong> l\u00e0 &#8220;c\u1ed5ng&#8221; \u0111\u1ec3 m\u1ea1ng LAN c\u1ee7a b\u1ea1n giao ti\u1ebfp v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i (Internet) ho\u1eb7c v\u1edbi c\u00e1c m\u1ea1ng LAN kh\u00e1c.<\/li>\n<\/ul>\n<figure id=\"attachment_31867\" aria-describedby=\"caption-attachment-31867\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31867\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Su-khac-nhau-giua-bo-chuyen-mach-Switch-va-Router.jpg\" alt=\"S\u1ef1 kh\u00e1c nhau gi\u1eefa b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch v\u00e0 Router\" width=\"800\" height=\"457\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Su-khac-nhau-giua-bo-chuyen-mach-Switch-va-Router.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Su-khac-nhau-giua-bo-chuyen-mach-Switch-va-Router-300x171.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Su-khac-nhau-giua-bo-chuyen-mach-Switch-va-Router-768x439.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Su-khac-nhau-giua-bo-chuyen-mach-Switch-va-Router-750x428.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-31867\" class=\"wp-caption-text\">S\u1ef1 kh\u00e1c nhau gi\u1eefa b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch v\u00e0 Router<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Pham-vi-hoat-dong-va-muc-dich-su-dung\"><\/span>Ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Switch:<\/strong> Ho\u1ea1t \u0111\u1ed9ng trong <strong>ph\u1ea1m vi n\u1ed9i b\u1ed9 m\u1ed9t m\u1ea1ng LAN<\/strong>. M\u1ee5c \u0111\u00edch l\u00e0 t\u1ea1o ra m\u1ed9t m\u1ea1ng n\u1ed9i b\u1ed9 hi\u1ec7u qu\u1ea3, n\u01a1i c\u00e1c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 chia s\u1ebb t\u00e0i nguy\u00ean v\u00e0 giao ti\u1ebfp nhanh ch\u00f3ng.<\/li>\n<li><strong>Router:<\/strong> Ho\u1ea1t \u0111\u1ed9ng \u1edf <strong>ph\u1ea1m vi li\u00ean m\u1ea1ng (WAN &#8211; Wide Area Network)<\/strong>. M\u1ee5c \u0111\u00edch l\u00e0 k\u1ebft n\u1ed1i c\u00e1c m\u1ea1ng kh\u00e1c nhau, cho ph\u00e9p truy c\u1eadp Internet, ho\u1eb7c li\u00ean k\u1ebft c\u00e1c chi nh\u00e1nh c\u1ee7a m\u1ed9t c\u00f4ng ty \u1edf c\u00e1c \u0111\u1ecba \u0111i\u1ec3m \u0111\u1ecba l\u00fd kh\u00e1c nhau.<\/li>\n<\/ul>\n<p><strong>V\u00ed d\u1ee5 minh h\u1ecda: <\/strong><\/p>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n c\u00f3 m\u1ed9t v\u0103n ph\u00f2ng v\u1edbi nhi\u1ec1u m\u00e1y t\u00ednh v\u00e0 m\u00e1y in.<\/p>\n<ul>\n<li>B\u1ea1n c\u1ea7n m\u1ed9t <strong>switch<\/strong> \u0111\u1ec3 c\u00e1c m\u00e1y t\u00ednh trong v\u0103n ph\u00f2ng c\u00f3 th\u1ec3 n\u00f3i chuy\u1ec7n \u0111\u01b0\u1ee3c v\u1edbi nhau v\u00e0 v\u1edbi m\u00e1y in. <strong>Switch<\/strong> gi\u00fap ch\u00fang k\u1ebft n\u1ed1i n\u1ed9i b\u1ed9.<\/li>\n<li>N\u1ebfu v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n mu\u1ed1n truy c\u1eadp Internet \u0111\u1ec3 g\u1eedi email ho\u1eb7c duy\u1ec7t web, b\u1ea1n c\u1ea7n m\u1ed9t <strong>router<\/strong>. <strong>Router<\/strong> s\u1ebd l\u00e0 thi\u1ebft b\u1ecb gi\u00fap v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n &#8220;n\u00f3i chuy\u1ec7n&#8221; \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> tr\u00ean Internet.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-cua-switch-trong-thuc-te\"><\/span>\u1ee8ng d\u1ee5ng c\u1ee7a switch trong th\u1ef1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u1ee8ng d\u1ee5ng c\u1ee7a thi\u1ebft b\u1ecb switch trong th\u1ef1c t\u1ebf r\u1ea5t r\u1ed9ng r\u00e3i v\u00e0 quan tr\u1ecdng trong \u0111a d\u1ea1ng m\u00f4i tr\u01b0\u1eddng m\u1ea1ng, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>M\u1ea1ng doanh nghi\u1ec7p<\/strong>: Switch \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y t\u00ednh, m\u00e1y ch\u1ee7, \u0111i\u1ec7n tho\u1ea1i IP v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng kh\u00e1c trong m\u1ed9t m\u1ea1ng n\u1ed9i b\u1ed9 (LAN). N\u00f3 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u, gi\u1ea3m \u0111\u1ed9 tr\u1ec5, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt m\u1ea1ng doanh nghi\u1ec7p.<\/li>\n<li><strong>M\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u (Data Center)<\/strong>: Switch k\u1ebft n\u1ed1i c\u00e1c m\u00e1y ch\u1ee7, thi\u1ebft b\u1ecb l\u01b0u tr\u1eef v\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng ph\u1ee9c t\u1ea1p, \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u cao v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p, gi\u00fap v\u1eadn h\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng l\u1edbn v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3.<\/li>\n<li><strong>M\u1ea1ng vi\u1ec5n th\u00f4ng<\/strong>: Switch \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c m\u1ea1ng vi\u1ec5n th\u00f4ng \u0111\u1ec3 k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb nh\u01b0 \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, thi\u1ebft b\u1ecb \u0111\u1ecbnh v\u1ecb GPS, gi\u00fap \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u trong h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng camera gi\u00e1m s\u00e1t v\u00e0 truy\u1ec1n t\u1ea3i video<\/strong>: Switch k\u1ebft n\u1ed1i camera IP, server video v\u00e0 c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng, cung c\u1ea5p b\u0103ng th\u00f4ng l\u1edbn, \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u1ea3i video \u1ed5n \u0111\u1ecbnh, kh\u00f4ng gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>M\u1ea1ng IoT (<a href=\"https:\/\/interdata.vn\/blog\/internet-of-things\/\">Internet of Things<\/a>)<\/strong>: Switch k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb IoT kh\u00e1c gi\u00fap truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb nhanh ch\u00f3ng v\u00e0 \u1ed5n \u0111\u1ecbnh, ph\u1ee5c v\u1ee5 c\u00e1c \u1ee9ng d\u1ee5ng t\u1ef1 \u0111\u1ed9ng h\u00f3a, nh\u00e0 th\u00f4ng minh, c\u00f4ng nghi\u1ec7p th\u00f4ng minh.<\/li>\n<li><strong>M\u1ea1ng c\u00f4ng nghi\u1ec7p v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a<\/strong>: Switch \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng, k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng, c\u1ea3m bi\u1ebfn, thi\u1ebft b\u1ecb ki\u1ec3m so\u00e1t nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tin c\u1eady cao trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/li>\n<li><strong>M\u1ea1ng gia \u0111\u00ecnh v\u00e0 v\u0103n ph\u00f2ng nh\u1ecf<\/strong>: Switch gi\u00fap t\u0103ng c\u01b0\u1eddng k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111a ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 m\u00e1y t\u00ednh, TV, m\u00e1y in, thi\u1ebft b\u1ecb th\u00f4ng minh, n\u00e2ng cao hi\u1ec7u su\u1ea5t m\u1ea1ng n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n<p>Ngo\u00e0i ra, c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch switch hi\u1ec7n \u0111\u1ea1i c\u00f2n h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u00ednh n\u0103ng m\u1edf r\u1ed9ng nh\u01b0:<\/p>\n<ul>\n<li>H\u1ed7 tr\u1ee3 chia VLAN gi\u00fap ph\u00e2n \u0111o\u1ea1n m\u1ea1ng logic, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng d\u1ec5 d\u00e0ng.<\/li>\n<li>QoS \u01b0u ti\u00ean l\u01b0u l\u01b0\u1ee3ng quan tr\u1ecdng nh\u01b0 tho\u1ea1i VoIP, video nh\u1eb1m gi\u1eef ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 \u1ed5n \u0111\u1ecbnh.<\/li>\n<li>H\u1ed7 tr\u1ee3 Link Aggregation \u0111\u1ec3 t\u0103ng b\u0103ng th\u00f4ng v\u00e0 n\u00e2ng cao \u0111\u1ed9 d\u1ef1 ph\u00f2ng cho k\u1ebft n\u1ed1i.<\/li>\n<li>C\u00f4ng ngh\u1ec7 PoE cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp cho thi\u1ebft b\u1ecb qua c\u00e1p m\u1ea1ng, \u0111\u01a1n gi\u1ea3n h\u00f3a l\u1eafp \u0111\u1eb7t.<\/li>\n<li>M\u1ed9t s\u1ed1 switch cao c\u1ea5p t\u00edch h\u1ee3p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 nh\u01b0 ACL, <a href=\"https:\/\/interdata.vn\/blog\/dhcp-la-gi\/\">DHCP<\/a> Snooping, Dynamic ARP Inspection.<\/li>\n<\/ul>\n<p>Switch m\u1ea1ng l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, t\u1eeb doanh nghi\u1ec7p l\u1edbn, trung t\u00e2m d\u1eef li\u1ec7u, vi\u1ec5n th\u00f4ng cho \u0111\u1ebfn nh\u00e0 th\u00f4ng minh v\u00e0 IoT, gi\u00fap \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i nhanh, \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tieu-chi-de-lua-chon-switch-mang-phu-hop\"><\/span>Ti\u00eau ch\u00ed \u0111\u1ec3 l\u1ef1a ch\u1ecdn switch m\u1ea1ng ph\u00f9 h\u1ee3p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"So-luong-cong\"><\/span>S\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>X\u00e1c \u0111\u1ecbnh r\u00f5 s\u1ed1 thi\u1ebft b\u1ecb c\u1ea7n k\u1ebft n\u1ed1i hi\u1ec7n t\u1ea1i v\u00e0 d\u1ef1 ki\u1ebfn t\u01b0\u01a1ng lai (m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i IP, camera, thi\u1ebft b\u1ecb IoT, v.v.). C\u00e2n nh\u1eafc lo\u1ea1i c\u1ed5ng: RJ45 (c\u00e1p \u0111\u1ed3ng), SFP (c\u00e1p quang) hay c\u1ed5ng PoE cho c\u1ea5p ngu\u1ed3n. \u0110\u1ea3m b\u1ea3o s\u1ed1 c\u1ed5ng \u0111\u1ee7 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u hi\u1ec7n t\u1ea1i v\u00e0 d\u01b0 \u0111\u1ecba cho m\u1edf r\u1ed9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toc-do-cong\"><\/span>T\u1ed1c \u0111\u1ed9 c\u1ed5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L\u1ef1a ch\u1ecdn t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p: 10\/100Mbps cho m\u1ea1ng \u0111\u01a1n gi\u1ea3n, Gigabit (10\/100\/1000Mbps) l\u00e0 ph\u1ed5 bi\u1ebfn cho v\u0103n ph\u00f2ng hi\u1ec7n \u0111\u1ea1i, ho\u1eb7c switch 10GbE cho trung t\u00e2m d\u1eef li\u1ec7u, doanh nghi\u1ec7p l\u1edbn. T\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p gi\u00fap duy tr\u00ec b\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft, tr\u00e1nh ngh\u1ebdn m\u1ea1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Loai-switch\"><\/span>Lo\u1ea1i switch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi m\u1ea1ng \u0111\u01a1n gi\u1ea3n, m\u1ea1ng nh\u1ecf, Unmanaged switch \u0111\u1ee7 d\u00f9ng. V\u1edbi m\u1ea1ng doanh nghi\u1ec7p l\u1edbn, y\u00eau c\u1ea7u qu\u1ea3n l\u00fd, b\u1ea3o m\u1eadt, thi\u1ebft l\u1eadp VLAN, QoS, c\u1ea7n s\u1eed d\u1ee5ng Managed switch \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n, gi\u00e1m s\u00e1t v\u00e0 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ho-tro-PoE-Power-over-Ethernet\"><\/span>H\u1ed7 tr\u1ee3 PoE (Power over Ethernet)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu c\u1ea7n c\u1ea5p ngu\u1ed3n tr\u1ef1c ti\u1ebfp qua c\u00e1p m\u1ea1ng cho thi\u1ebft b\u1ecb nh\u01b0 IP phone, camera, \u0111i\u1ec3m truy c\u1eadp Wi-Fi, n\u00ean ch\u1ecdn switch PoE \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed l\u1eafp \u0111\u1eb7t ngu\u1ed3n \u0111i\u1ec7n ri\u00eang bi\u1ec7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cac-tinh-nang-mang-nang-cao\"><\/span>C\u00e1c t\u00ednh n\u0103ng m\u1ea1ng n\u00e2ng cao<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>VLAN ph\u00e2n \u0111o\u1ea1n m\u1ea1ng, QoS \u01b0u ti\u00ean l\u01b0u l\u01b0\u1ee3ng, Link Aggregation t\u0103ng b\u0103ng th\u00f4ng, Spanning Tree Protocol ng\u0103n v\u00f2ng l\u1eb7p m\u1ea1ng, b\u1ea3o m\u1eadt c\u1ed5ng (MAC Binding) l\u00e0 c\u00e1c t\u00ednh n\u0103ng c\u1ea7n thi\u1ebft cho m\u1ea1ng doanh nghi\u1ec7p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt cao.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thuong-hieu-va-ho-tro-ky-thuat\"><\/span>Th\u01b0\u01a1ng hi\u1ec7u v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u00ean ch\u1ecdn c\u00e1c h\u00e3ng c\u00f3 uy t\u00edn nh\u01b0 Cisco, HP-Aruba, Dell, Allied Telesis, Fortinet \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng thi\u1ebft b\u1ecb, h\u1ed7 tr\u1ee3 c\u1eadp nh\u1eadt firmware, kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 b\u1ea3o h\u00e0nh l\u00e2u d\u00e0i.<\/p>\n<figure id=\"attachment_31870\" aria-describedby=\"caption-attachment-31870\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31870\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Tieu-chi-de-lua-chon-switch-mang-phu-hop.jpg\" alt=\"Ti\u00eau ch\u00ed \u0111\u1ec3 l\u1ef1a ch\u1ecdn switch m\u1ea1ng ph\u00f9 h\u1ee3p\" width=\"800\" height=\"396\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Tieu-chi-de-lua-chon-switch-mang-phu-hop.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Tieu-chi-de-lua-chon-switch-mang-phu-hop-300x149.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Tieu-chi-de-lua-chon-switch-mang-phu-hop-768x380.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Tieu-chi-de-lua-chon-switch-mang-phu-hop-750x371.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-31870\" class=\"wp-caption-text\">Ti\u00eau ch\u00ed \u0111\u1ec3 l\u1ef1a ch\u1ecdn switch m\u1ea1ng ph\u00f9 h\u1ee3p<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Moi-truong-hoat-dong\"><\/span>M\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Switch c\u00f4ng nghi\u1ec7p (Industrial Switch) c\u1ea7n cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 nh\u00e0 m\u00e1y v\u1edbi nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, rung l\u1eafc cao, Switch ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p v\u0103n ph\u00f2ng, trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kha-nang-mo-rong-va-tuong-thich\"><\/span>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 t\u01b0\u01a1ng th\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ea3m b\u1ea3o switch c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n t\u1ea1i, d\u1ec5 d\u00e0ng n\u00e2ng c\u1ea5p ho\u1eb7c th\u00eam thi\u1ebft b\u1ecb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ngan-sach-dau-tu\"><\/span>Ng\u00e2n s\u00e1ch \u0111\u1ea7u t\u01b0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e2n \u0111\u1ed1i gi\u1eefa t\u00ednh n\u0103ng v\u00e0 chi ph\u00ed, kh\u00f4ng n\u00ean ch\u1ecdn switch qu\u00e1 \u0111\u1eaft cho nhu c\u1ea7u \u0111\u01a1n gi\u1ea3n, c\u0169ng kh\u00f4ng n\u00ean ch\u1ecdn switch qu\u00e1 y\u1ebfu, kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u d\u00e0i h\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chon-thuong-hieu-uy-tin\"><\/span>Ch\u1ecdn th\u01b0\u01a1ng hi\u1ec7u uy t\u00edn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ecdn c\u00e1c th\u01b0\u01a1ng hi\u1ec7u c\u00f3 ti\u1ebfng trong l\u0129nh v\u1ef1c thi\u1ebft b\u1ecb m\u1ea1ng nh\u01b0 Cisco, HP, Juniper, TP-Link, D-Link, Netgear, Mikrotik. C\u00e1c th\u01b0\u01a1ng hi\u1ec7u n\u00e0y th\u01b0\u1eddng cung c\u1ea5p s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng, \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 t\u1ed1t, h\u00e3y \u0111\u1ecdc c\u00e1c \u0111\u00e1nh gi\u00e1 t\u1eeb ng\u01b0\u1eddi d\u00f9ng kh\u00e1c v\u00e0 chuy\u00ean gia \u0111\u1ec3 c\u00f3 c\u00e1i nh\u00ecn kh\u00e1ch quan.<\/p>\n<p>Mu\u1ed1n l\u1ef1a ch\u1ecdn switch m\u1ea1ng ph\u00f9 h\u1ee3p, b\u1ea1n c\u1ea7n ph\u00e2n t\u00edch chi ti\u1ebft nhu c\u1ea7u s\u1eed d\u1ee5ng, bao g\u1ed3m s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb, b\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft, y\u00eau c\u1ea7u v\u1ec1 t\u00ednh n\u0103ng qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o m\u1eadt, c\u0169ng nh\u01b0 t\u00ednh linh ho\u1ea1t m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e2n nh\u1eafc \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng v\u00e0 ng\u00e2n s\u00e1ch \u0111\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb t\u1ed1i \u01b0u v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 chi ph\u00ed.<\/p>\n<p>Vi\u1ec7c n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch switch kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch m\u1ea1ng m\u00e1y t\u00ednh v\u1eadn h\u00e0nh m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t cho nhu c\u1ea7u c\u1ee7a m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng m\u1ea1ng n\u00e0o \u2013 t\u1eeb v\u0103n ph\u00f2ng nh\u1ecf \u0111\u1ebfn trung t\u00e2m d\u1eef li\u1ec7u l\u1edbn \u2013 Switch (thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch) lu\u00f4n \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t gi\u00fap k\u1ebft n\u1ed1i, qu\u1ea3n l\u00fd v\u00e0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb. C\u00f9ng InterData t\u00ecm hi\u1ec3u switch l\u00e0 g\u00ec, vai tr\u00f2,<\/p>\n","protected":false},"author":11,"featured_media":31871,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-31849","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\/31849","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=31849"}],"version-history":[{"count":7,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/31849\/revisions"}],"predecessor-version":[{"id":35720,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/31849\/revisions\/35720"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/31871"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=31849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=31849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=31849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}