{"id":801,"date":"2023-03-22T18:09:16","date_gmt":"2023-03-22T18:09:16","guid":{"rendered":"https:\/\/vtechsolutions.vn\/blog\/?p=801"},"modified":"2023-04-15T12:45:29","modified_gmt":"2023-04-15T12:45:29","slug":"so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3","status":"publish","type":"post","link":"https:\/\/vtechsolutions.vn\/blog\/so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3\/","title":{"rendered":"So s\u00e1nh switch layer 2, switch layer 2+ v\u00e0 chuy\u1ec3n m\u1ea1ch switch layer 3"},"content":{"rendered":"<p>Switch \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng quan tr\u1ecdng v\u1edbi m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. Ch\u00fang \u0111\u1ea3m nh\u1eadn ch\u1ee9c n\u0103ng k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i v\u00e0 chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i tin trong c\u00f9ng h\u1ec7 th\u1ed1ng m\u1ea1ng. Hi\u1ec7n nay, c\u00e1c thi\u1ebft b\u1ecb Switch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu l\u00e0 <a href=\"https:\/\/vtechsolutions.vn\/blog\/so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3\/\">chuy\u1ec3n m\u1ea1ch layer 2 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 3<\/a>. V\u1eady ch\u1ee9c n\u0103ng c\u00e1c lo\u1ea1i chuy\u1ec3n m\u1ea1ch n\u00e0y l\u00e0 g\u00ec, kh\u00e1c nhau ra sao, \u1ee9ng d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o? M\u1eddi b\u1ea1n c\u00f9ng VTech t\u00ecm hi\u1ec3u th\u00f4ng tin chi ti\u1ebft trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/p>\n<div id=\"toc_container\" class=\"toc_light_blue no_bullets\"><p class=\"toc_title\">T&oacute;m t\u1eaft n\u1ed9i dung<\/p><ul class=\"toc_list\"><li><a href=\"#1_Tim_hieu_Switch_layer_2_Switch_layer_2_Switch_layer_3\">1\/ T\u00ecm hi\u1ec3u Switch layer 2, Switch layer 2+, Switch layer 3<\/a><ul><li><a href=\"#11_Switch_layer_2_la_gi\">1.1\/ Switch layer 2 l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#12_Switch_layer_2_la_gi\">1.2\/ Switch layer 2+ l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#13_Switch_layer_3_la_gi\">1.3\/ Switch layer 3 l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><li><a href=\"#2_So_sanh_uu_nhuoc_diem_cua_Switch_Layer_2_Switch_layer_2_va_Switch_layer_3\">2\/ So s\u00e1nh \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch Layer 2, Switch layer 2+ v\u00e0 Switch layer 3?<\/a><ul><li><a href=\"#21_Uu_nhuoc_diem_cua_switch_layer_2\">2.1\/ \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a switch layer 2<\/a><\/li><li><a href=\"#22_Uu_nhuoc_diem_cua_switch_layer_3\">2.2\/ \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a switch layer 3<\/a><\/li><\/ul><\/li><li><a href=\"#3_Nen_chon_mua_Switch_Layer_2_Switch_layer_2_hay_Switch_layer_3\">3\/ N\u00ean ch\u1ecdn mua Switch Layer 2, Switch layer 2+ hay Switch layer 3<\/a><\/li><\/ul><\/div>\n<h2><span id=\"1_Tim_hieu_Switch_layer_2_Switch_layer_2_Switch_layer_3\">1\/ T\u00ecm hi\u1ec3u Switch layer 2, Switch layer 2+, Switch layer 3<\/span><\/h2>\n<p>Hi\u1ec7n nay, tr\u00ean th\u1ecb tr\u01b0\u1eddng c\u00f3 kh\u00e1 nhi\u1ec1u c\u00e1c d\u00f2ng Switch kh\u00e1c nhau, m\u1eb7c d\u00f9 c\u00f3 c\u1ea5u t\u1ea1o kh\u00e1c gi\u1ed1ng nhau nh\u1eefng gi\u00e1 th\u00e0nh c\u1ee7a ch\u00fang l\u1ea1i c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch r\u00f5 r\u1ec7t. V\u00ec v\u1eady, vi\u1ec7c t\u00ecm hi\u1ec3u v\u1ec1 b\u1ed9 chuy\u1ec3n m\u1ea1ch layer 2, chuy\u1ec3n m\u1ea1ch layer 3 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p.<\/p>\n<h3><span id=\"11_Switch_layer_2_la_gi\">1.1\/ Switch layer 2 l\u00e0 g\u00ec?<\/span><\/h3>\n<p><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-2-la-gi\/\">Chuy\u1ec3n m\u1ea1ch layer 2<\/a> l\u00e0 m\u1ed9t d\u1ea1ng chuy\u1ec3n m\u1ea1ch Ethernet chuy\u1ec3n \u0111\u1ed5i c\u00e1c g\u00f3i b\u1eb1ng c\u00e1ch xem \u0111\u1ecba ch\u1ec9 v\u1eadt l\u00fd (\u0111\u1ecba ch\u1ec9 MAC) c\u1ee7a ch\u00fang. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u (hay l\u1edbp 2) c\u1ee7a m\u00f4 h\u00ecnh tham chi\u1ebfu K\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng m\u1edf (OSI) .<\/p>\n<p><strong>B\u1ed9 chuy\u1ec3n m\u1ea1ch l\u1edbp 2<\/strong> nhanh h\u01a1n so v\u1edbi b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, v\u00ec ch\u00fang kh\u00f4ng m\u1ea5t nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 th\u00f4ng tin ti\u00eau \u0111\u1ec1 l\u1edbp m\u1ea1ng.<\/p>\n<p>V\u1ec1 c\u01a1 b\u1ea3n, ch\u00fang th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng c\u1ea7u n\u1ed1i gi\u1eefa c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng LAN v\u00ec ch\u00fang chuy\u1ec3n ti\u1ebfp c\u00e1c khung d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 \u0111\u00edch c\u1ee7a ch\u00fang m\u00e0 kh\u00f4ng c\u1ea7n quan t\u00e2m \u0111\u1ebfn giao th\u1ee9c m\u1ea1ng \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Do \u0111\u00f3, c\u00e1c c\u00f4ng t\u1eafc l\u1edbp 2 v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 c\u00e1c c\u1ea7u n\u1ed1i \u0111a c\u1ed5ng ho\u1ea1t \u0111\u1ed9ng g\u1ea7n t\u1ed1c \u0111\u1ed9 d\u00e2y v\u00e0 c\u00f3 \u0111\u1ed9 tr\u1ec5 c\u1ef1c th\u1ea5p.<\/p>\n<p>M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng c\u1ee7a Switch layer 2:<\/p>\n<ul>\n<li>Switch layer 2 c\u00f3 th\u1ec3 v\u1eadn chuy\u1ec3n d\u1eef li\u1ec7u d\u1ec5 d\u00e0ng v\u00e0 nhanh ch\u00f3ng gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 trong m\u1ea1ng LAN.<\/li>\n<li>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn n\u00e0y h\u1ecdc \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a n\u00fat \u0111\u00edch t\u1eeb b\u1ea3ng \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c duy tr\u00ec trong chuy\u1ec3n ti\u1ebfp. C\u00e1c khung d\u1eef li\u1ec7u t\u1eeb n\u00fat ngu\u1ed3n \u0111\u1ebfn n\u00fat \u0111\u00edch \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp tr\u00ean c\u01a1 s\u1edf \u0111\u1ecba ch\u1ec9 MAC n\u00e0y.<\/li>\n<li>Switch layer 2 chia c\u00e1c m\u1ea1ng LAN d\u00e0y \u0111\u1eb7c v\u00e0 c\u1ed3ng k\u1ec1nh th\u00e0nh c\u00e1c m\u1ea1ng Vlan nh\u1ecf kh\u00e1c nhau, gi\u00fap chuy\u1ec3n \u0111\u1ed5i d\u1ec5 d\u00e0ng h\u01a1n trong m\u1ea1ng LAN l\u1edbn v\u00ec kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i v\u1eadt l\u00fd n\u00e0o li\u00ean quan.<\/li>\n<\/ul>\n<figure id=\"attachment_794\" aria-describedby=\"caption-attachment-794\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-794\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-2.jpg\" alt=\"Switch Layer 2\" width=\"600\" height=\"298\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-2.jpg 600w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-2-300x149.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-794\" class=\"wp-caption-text\">Switch layer 2 l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h3><span id=\"12_Switch_layer_2_la_gi\">1.2\/ Switch layer 2+ l\u00e0 g\u00ec?<\/span><\/h3>\n<p>M\u1ed9t switch ch\u1ec9 \u0111\u01b0\u1ee3c b\u1ed5 sung \u0111\u1ecbnh tuy\u1ebfn t\u0129nh th\u00ec s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Layer 2+ ho\u1eb7c Layer 3 Lite. <strong>Switch Layer 2+<\/strong> (l\u1edbp 3 Lite) so v\u1edbi chuy\u1ec3n m\u1ea1ch 2 s\u1ebd \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p th\u00eam t\u00ednh n\u0103ng \u0111\u1ecbnh tuy\u1ebfn t\u0129nh. C\u00f2n v\u1ec1 c\u01a1 b\u1ea3n th\u00ec n\u00f3 s\u1ebd c\u00f3 ch\u1ee9c n\u0103ng gi\u1ed1ng v\u1edbi Switch layer 2.<\/p>\n<h3><span id=\"13_Switch_layer_3_la_gi\">1.3\/ Switch layer 3 l\u00e0 g\u00ec?<\/span><\/h3>\n<p>N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, <a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-3-la-gi\/\">chuy\u1ec3n m\u1ea1ch layer 3<\/a> k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u00f4ng t\u1eafc \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb tr\u00ean c\u00f9ng m\u1ed9t m\u1ea1ng con ho\u1eb7c m\u1ea1ng LAN \u1ea3o v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ef1c nhanh v\u00e0 c\u00f3 tr\u00ed th\u00f4ng minh \u0111\u1ecbnh tuy\u1ebfn IP t\u00edch h\u1ee3p \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn. N\u00f3 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn, ki\u1ec3m tra c\u00e1c g\u00f3i \u0111\u1ebfn v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn h\u1ed7 tr\u1ee3 \u0111\u1ecba ch\u1ec9 ngu\u1ed3n v\u00e0 \u0111\u00edch.<\/p>\n<p>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a switch l\u1edbp 3 l\u00e0:<\/p>\n<ul>\n<li>\u0110i k\u00e8m v\u1edbi 24 c\u1ed5ng Ethernet, nh\u01b0ng kh\u00f4ng c\u00f3 giao di\u1ec7n WAN.<\/li>\n<li>Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u00f4ng t\u1eafc \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t m\u1ea1ng con.<\/li>\n<li>Thu\u1eadt to\u00e1n chuy\u1ec3n m\u1ea1ch \u0111\u01a1n gi\u1ea3n v\u00e0 gi\u1ed1ng nhau \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c giao th\u1ee9c \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn.<\/li>\n<li>Ho\u1ea1t \u0111\u1ed9ng tr\u00ean hai l\u1edbp OSI: l\u1edbp 2 v\u00e0 l\u1edbp 3.<\/li>\n<\/ul>\n<figure id=\"attachment_790\" aria-describedby=\"caption-attachment-790\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-790\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-3-e1680093653206.jpg\" alt=\"Switch Layer 3\" width=\"600\" height=\"328\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-3-e1680093653206.jpg 600w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-3-e1680093653206-300x164.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-790\" class=\"wp-caption-text\">Switch layer 3 l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><span id=\"2_So_sanh_uu_nhuoc_diem_cua_Switch_Layer_2_Switch_layer_2_va_Switch_layer_3\">2\/ So s\u00e1nh \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch Layer 2, Switch layer 2+ v\u00e0 Switch layer 3?<\/span><\/h2>\n<p>Nh\u00ecn chung Chuy\u1ec3n m\u1ea1ch layer 2 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 2+ c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng \u0111\u1ed1i gi\u1ed1ng nhau, do \u0111\u00f3 ch\u00fang ta s\u1ebd \u0111i so s\u00e1nh \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m s\u1ef1 kh\u00e1c nhau gi\u1eefa chuy\u1ec3n m\u1ea1ch layer 2 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 3.<\/p>\n<h3><span id=\"21_Uu_nhuoc_diem_cua_switch_layer_2\">2.1\/ \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a switch layer 2<\/span><\/h3>\n<p><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Gi\u00fap chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i d\u1ef1a tr\u00ean c\u00e1c \u0111\u1ecba ch\u1ec9 MAC duy nh\u1ea5t<\/li>\n<li>Kh\u00f4ng cung c\u1ea5p b\u1ea5t k\u1ef3 thi\u1ebft l\u1eadp ho\u1eb7c qu\u1ea3n l\u00fd n\u00e0o<\/li>\n<li>N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai nhanh ch\u00f3ng v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n<\/li>\n<li>\u0110\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n<\/li>\n<\/ul>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>C\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch l\u1edbp 2 ph\u1ea3i chia nh\u1ecf c\u00e1c mi\u1ec1n xung \u0111\u1ed9t m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/li>\n<li>N\u00f3 kh\u00f4ng chia nh\u1ecf c\u00e1c mi\u1ec1n qu\u1ea3ng b\u00e1 theo m\u1eb7c \u0111\u1ecbnh.<\/li>\n<li>B\u1ed9 chuy\u1ec3n m\u1ea1ch L2 kh\u00f4ng cho ph\u00e9p b\u1ea1n tri\u1ec3n khai b\u1ea5t k\u1ef3 th\u00f4ng tin t\u00ecnh b\u00e1o n\u00e0o trong khi chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i.<\/li>\n<li>Kh\u00f4ng gi\u00fap b\u1ea1n th\u1ef1c hi\u1ec7n chuy\u1ec3n m\u1ea1ch ho\u1eb7c \u0111\u1ecbnh tuy\u1ebfn d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP.<\/li>\n<li>Kh\u00f4ng \u0111\u1ea3m b\u1ea3o b\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft cho ng\u01b0\u1eddi d\u00f9ng VoIP<\/li>\n<\/ul>\n<figure id=\"attachment_792\" aria-describedby=\"caption-attachment-792\" style=\"width: 974px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-792\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-la-gi.jpg\" alt=\"b\u1ed9 chuy\u1ec3n m\u1ea1ch switch l\u00e0 g\u00ec\" width=\"974\" height=\"554\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-la-gi.jpg 974w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-la-gi-300x171.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/bo-chuyen-mach-switch-la-gi-768x437.jpg 768w\" sizes=\"auto, (max-width: 974px) 100vw, 974px\" \/><figcaption id=\"caption-attachment-792\" class=\"wp-caption-text\">So s\u00e1nh Switch Layer 2, Switch layer 2+ v\u00e0 Switch layer 3<\/figcaption><\/figure>\n<h3><span id=\"22_Uu_nhuoc_diem_cua_switch_layer_3\">2.2\/ \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a switch layer 3<\/span><\/h3>\n<p><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Chuy\u1ec3n m\u1ea1ch layer 3 h\u1ed7 tr\u1ee3 \u0111\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c m\u1ea1ng LAN \u1ea3o.<\/li>\n<li>C\u1ea3i thi\u1ec7n c\u00e1ch ly l\u1ed7i.<\/li>\n<li>Cung c\u1ea5p d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd an ninh.<\/li>\n<li>Gi\u1ea3m l\u01b0u l\u01b0\u1ee3ng ph\u00e1t s\u00f3ng.<\/li>\n<li>D\u1ec5 d\u00e0ng th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh c\u1ea5u h\u00ecnh cho c\u00e1c VLAN, v\u00ec kh\u00f4ng c\u1ea7n m\u1ed9t b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn ri\u00eang bi\u1ec7t gi\u1eefa m\u1ed7i VLAN.<\/li>\n<li>Cung c\u1ea5p t\u00ednh to\u00e1n l\u01b0u l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li>\u0110\u1ed9 tr\u1ec5 m\u1ea1ng th\u1ea5p h\u01a1n d\u01b0\u1edbi d\u1ea1ng g\u00f3i kh\u00f4ng t\u1ea1o th\u00eam b\u01b0\u1edbc nh\u1ea3y \u0111\u1ec3 \u0111i qua b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/li>\n<\/ul>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Gi\u00e1 th\u00e0nh c\u1ee7a switch layer 3 kh\u00e1 cao so v\u1edbi switch layer 2.<\/li>\n<li>Chuy\u1ec3n m\u1ea1ch l\u1edbp 3 kh\u00f4ng cung c\u1ea5p ch\u1ee9c n\u0103ng WAN.<\/li>\n<li>Nhi\u1ec1u ng\u01b0\u1eddi thu\u00ea v\u00e0 \u1ea3o h\u00f3a.<\/li>\n<li>B\u1ed9 chuy\u1ec3n m\u1ea1ch l\u1edbp 3 ch\u1eadm h\u01a1n b\u1ed9 chuy\u1ec3n m\u1ea1ch l\u1edbp 2, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y lo ng\u1ea1i khi m\u1edf r\u1ed9ng VLAN tr\u00ean nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/li>\n<li>V\u00ec c\u00e1c switch l\u1edbp 3 \u0111\u1ecbnh tuy\u1ebfn \u1edf l\u1edbp truy c\u1eadp n\u00ean m\u1ed7i VLAN s\u1ebd \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi m\u1ed9t switch, d\u1eabn \u0111\u1ebfn thi\u1ebfu t\u00ednh linh ho\u1ea1t<\/li>\n<li>\u1ee8ng d\u1ee5ng h\u1ea1n ch\u1ebf v\u00ec n\u00f3 ch\u1ec9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u1ea1ng doanh nghi\u1ec7p l\u1edbn v\u1edbi nhi\u1ec1u m\u1ea1ng con thi\u1ebft b\u1ecb v\u00e0 nhi\u1ec1u l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp. C\u00e1c t\u1ed5 ch\u1ee9c v\u1eeba v\u00e0 nh\u1ecf kh\u00f4ng c\u1ea7n switch layer 3.<\/li>\n<\/ul>\n<p>B\u1ea3ng so s\u00e1nh d\u01b0\u1edbi \u0111\u00e2y s\u1ebd ch\u1ec9 ra m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng gi\u1eefa chuy\u1ec3n m\u1ea1ch layer 2 v\u00e0 layer 3:<\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Chuy\u1ec3n m\u1ea1ch layer 2\u00a0<\/b><\/td>\n<td><b>Chuy\u1ec3n m\u1ea1ch layer 3\u00a0<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ho\u1ea1t \u0111\u1ed9ng \u1edf L\u1edbp 2 c\u1ee7a M\u00f4 h\u00ecnh tham chi\u1ebfu OSI.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Th\u1ef1c hi\u1ec7n c\u1ea3 chuy\u1ec3n m\u1ea1ch c\u0169ng nh\u01b0 \u0111\u1ecbnh tuy\u1ebfn.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Chuy\u1ec3n m\u1ea1ch layer 2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m l\u01b0u l\u01b0\u1ee3ng tr\u00ean m\u1ea1ng c\u1ee5c b\u1ed9.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chuy\u1ec3n m\u1ea1ch layer 3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 Tri\u1ec3n khai VLAN.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u1ede L\u1edbp 2, c\u00e1c g\u00f3i chuy\u1ec3n m\u1ea1ch \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn l\u1ea1i t\u1eeb c\u1ed5ng ngu\u1ed3n \u0111\u1ebfn c\u1ed5ng \u0111\u00edch.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trong chuy\u1ec3n m\u1ea1ch l\u1edbp 3, c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch s\u1eed d\u1ee5ng m\u1ed9t \u00edt th\u1eddi gian \u0111\u1ec3 ki\u1ec3m tra c\u00e1c g\u00f3i d\u1eef li\u1ec7u tr\u01b0\u1edbc khi t\u00ecm tuy\u1ebfn \u0111\u01b0\u1eddng kh\u1ea3 d\u1ee5ng t\u1ed1t nh\u1ea5t \u0111\u1ec3 h\u01b0\u1edbng c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u1ebfn c\u1ed5ng \u0111\u00edch.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">L\u1edbp 2 s\u1eed d\u1ee5ng Giao th\u1ee9c ph\u00e2n gi\u1ea3i \u0111\u1ecba ch\u1ec9 (ARP) \u0111\u1ec3 kh\u00e1m ph\u00e1 \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u00e1c thi\u1ebft b\u1ecb l\u1edbp 3 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn trong m\u1ea1ng LAN \u1ea3o (VLAN).<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Switch layer 2 th\u1ef1c hi\u1ec7n chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n gi\u1ea3n b\u1eb1ng c\u00e1ch t\u00ecm v\u00e0 duy tr\u00ec m\u1ed9t b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Switch layer 3 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn c\u00e1c g\u00f3i d\u1eef li\u1ec7u th\u00f4ng qua \u0111\u1ecba ch\u1ec9 IP.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C\u00e1c thi\u1ebft b\u1ecb ch\u1ec9 c\u00f3 th\u1ec3 giao ti\u1ebfp trong c\u00f9ng m\u1ed9t m\u1ea1ng.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u00e1c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 giao ti\u1ebfp b\u00ean trong ho\u1eb7c b\u00ean ngo\u00e0i m\u1ea1ng.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ch\u1ee9c n\u0103ng \u0111\u1ecbnh tuy\u1ebfn: Ch\u1ec9 \u0111\u1ecba ch\u1ec9 MAC<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ee9c n\u0103ng \u0111\u1ecbnh tuy\u1ebfn: H\u1ed7 tr\u1ee3 \u0111\u1ecbnh tuy\u1ebfn cao h\u01a1n nh\u01b0 \u0111\u1ecbnh tuy\u1ebfn t\u0129nh v\u00e0 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ed9ng,<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">G\u1eafn th\u1ebb Vlan d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP v\u00e0 \u0111\u1ecbnh tuy\u1ebfn gi\u1eefa VLAN: Kh\u00f4ng:\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">G\u1eafn th\u1ebb Vlan d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP v\u00e0 \u0111\u1ecbnh tuy\u1ebfn gi\u1eefa VLAN: C\u00f3\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span id=\"3_Nen_chon_mua_Switch_Layer_2_Switch_layer_2_hay_Switch_layer_3\">3\/ N\u00ean ch\u1ecdn mua Switch Layer 2, Switch layer 2+ hay Switch layer 3<\/span><\/h2>\n<p>T\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ng ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ed9 x\u1eed l\u00fd, k\u1ebft c\u1ea5u chuy\u1ec3n m\u1ea1ch v\u00e0 c\u00e1c thu\u1eadt to\u00e1n c\u1ee7a n\u00f3. \u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c l\u1edbp m\u00e0 c\u00f4ng t\u1eafc ho\u1ea1t \u0111\u1ed9ng trong m\u00f4 h\u00ecnh K\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng m\u1edf (OSI).<\/p>\n<p>Nh\u00ecn chung, c\u00e1c m\u1ea1ng m\u00e1y t\u00ednh th\u00f4ng th\u01b0\u1eddng ch\u1ec9 c\u1ea7n s\u1eed d\u1ee5ng t\u1edbi Switch Layer 2 ho\u1eb7c Switch Layer 2+. Nh\u01b0ng khi \u0111\u1ed9 ph\u1ee9c t\u1ea1p t\u0103ng l\u00ean, c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh m\u1ea1ng m\u1ea1nh m\u1ebd v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n th\u00ec Switch Layer 3 s\u1ebd l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n. D\u00f9 b\u1ea1n ch\u1ecdn b\u1ed9 chuy\u1ec3n m\u1ea1ch n\u00e0o \u0111i ch\u0103ng n\u1eefa th\u00ec c\u00f3 m\u1ed9t \u0111i\u1ec1u quan tr\u1ecdng b\u1ea1n c\u1ea7n ghi nh\u1edb h\u00e3y tham kh\u1ea3o v\u00e0 ch\u1ecdn nh\u1eefng d\u00f2ng s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh.<\/p>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 c\u00e1c th\u00f4ng tin chia s\u1ebb v\u1ec1 chuy\u1ec3n m\u1ea1ch layer 3 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 2 m\u00e0 ch\u00fang t\u00f4i mu\u1ed1n g\u1eedi \u0111\u1ebfn b\u1ea1n \u0111\u1ecdc. \u0110\u1ed3ng th\u1eddi s\u1ebd gi\u00fap cho c\u00e1c b\u1ea1n c\u00f3 th\u00eam ki\u1ebfn th\u1ee9c trong vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c thi\u1ebft b\u1ecb Switch \u0111\u00fang theo nhu c\u1ea7u c\u1ee7a m\u00ecnh khi s\u1eed d\u1ee5ng. N\u1ebfu kh\u00e1ch h\u00e0ng \u0111ang c\u00f3 nhu c\u1ea7u t\u00ecm mua b\u1ed9 chuy\u1ec3n m\u1ea1ch h\u00e3y li\u00ean h\u1ec7 cho VTech \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n th\u00eam th\u00f4ng tin. VTech lu\u00f4n t\u1ef1 h\u00e0o l\u00e0 \u0111\u01a1n v\u1ecb uy t\u00edn lu\u00f4n mang \u0111\u1ebfn nh\u1eefng gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o nh\u1ea5t cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p><strong>Tham kh\u1ea3o th\u00eam:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-may-tinh-la-gi\/#4_Mot_mang_may_tinh_gom_cac_thanh_phan_gi\">M\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng bao g\u1ed3m nh\u1eefng thi\u1ebft b\u1ecb g\u00ec?<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/bo-chuyen-mach-switch-la-gi\/#2_Vai_tro_cua_bo_chuyen_mach_Switch_trong_he_thong_mang\">Vai tr\u00f2 c\u1ee7a b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-poe-la-gi\/#3_Tai_sao_nen_su_dung_Switch_PoE_thay_vi_Switch_thuong_trong_he_thong_mang\">T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng Switch PoE thay v\u00ec Switch th\u01b0\u1eddng trong h\u1ec7 th\u1ed1ng m\u1ea1ng<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Switch \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng quan tr\u1ecdng v\u1edbi m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. Ch\u00fang \u0111\u1ea3m nh\u1eadn ch\u1ee9c n\u0103ng k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u<\/p>\n","protected":false},"author":1,"featured_media":791,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181,5],"tags":[],"class_list":["post-801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-he-thong-thiet-bi-mang","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>So s\u00e1nh chuy\u1ec3n m\u1ea1ch layer 2 \/ 2+ v\u00e0 chuy\u1ec3n m\u1ea1ch layer 3<\/title>\n<meta name=\"description\" content=\"Chuy\u1ec3n m\u1ea1ch layer 3 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 2 l\u00e0 g\u00ec, ch\u00fang c\u00f3 nh\u1eefng \u0111i\u1ec3m g\u00ec kh\u00e1c nhau? C\u00f9ng t\u00ecm hi\u1ec3u \u0111i\u1ec1u qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vtechsolutions.vn\/blog\/so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"So s\u00e1nh chuy\u1ec3n m\u1ea1ch layer 2 \/ 2+ v\u00e0 chuy\u1ec3n m\u1ea1ch layer 3\" \/>\n<meta property=\"og:description\" content=\"Chuy\u1ec3n m\u1ea1ch layer 3 v\u00e0 chuy\u1ec3n m\u1ea1ch layer 2 l\u00e0 g\u00ec, ch\u00fang c\u00f3 nh\u1eefng \u0111i\u1ec3m g\u00ec kh\u00e1c nhau? 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