{"id":814,"date":"2023-03-27T08:56:09","date_gmt":"2023-03-27T08:56:09","guid":{"rendered":"https:\/\/vtechsolutions.vn\/blog\/?p=814"},"modified":"2023-10-17T12:53:22","modified_gmt":"2023-10-17T12:53:22","slug":"chuyen-mach-switch-layer-3-la-gi","status":"publish","type":"post","link":"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-3-la-gi\/","title":{"rendered":"Chuy\u1ec3n m\u1ea1ch switch layer 3 l\u00e0 g\u00ec? Nh\u1eefng t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a switch layer 3"},"content":{"rendered":"<p><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-3-la-gi\/\">Chuy\u1ec3n m\u1ea1ch switch layer 3 <\/a> l\u00e0 c\u00f4ng c\u1ee5 quen thu\u1ed9c c\u1ee7a c\u00e1c nh\u00e0 qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee5c b\u1ed9 c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c hay doanh nghi\u1ec7p. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft chuy\u1ec3n m\u1ea1ch layer 3 l\u00e0 g\u00ec, nguy\u00ean l\u00fd v\u00e0 t\u00ednh n\u0103ng n\u1ed5i b\u1eadt nh\u01b0 th\u1ebf n\u00e0o? \u0110\u1ec3 gi\u1ea3i \u0111\u00e1p th\u1eafc m\u1eafc n\u00e0y, m\u1eddi b\u1ea1n \u0111\u1ecdc tham kh\u1ea3o b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/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_Chuyen_mach_Switch_layer_3_la_gi\">1\/ Chuy\u1ec3n m\u1ea1ch Switch layer 3 l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#2_Nguyen_ly_hoat_dong_cua_chuyen_mach_Switch_layer_3\">2\/ Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a chuy\u1ec3n m\u1ea1ch Switch layer 3<\/a><\/li><li><a href=\"#3_Tinh_nang_noi_bat_cua_Switch_layer_3\">3\/ T\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3<\/a><ul><li><a href=\"#31_Chuc_nang_noi_bat_cua_Switch_layer_3\">3.1\/ Ch\u1ee9c n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3<\/a><ul><li><a href=\"#311_Thuc_hien_dinh_tuyen_Router\">3.1.1\/ Th\u1ef1c hi\u1ec7n \u0111\u1ecbnh tuy\u1ebfn Router<\/a><\/li><li><a href=\"#312_Xu_ly_tac_nghen_bang_thong\">3.1.2\/ X\u1eed l\u00fd t\u1eafc ngh\u1ebdn b\u0103ng th\u00f4ng<\/a><\/li><li><a href=\"#313_Ket_noi_nhieu_segment\">3.1.3\/ K\u1ebft n\u1ed1i nhi\u1ec1u segment<\/a><\/li><li><a href=\"#314_Chia_nho_he_thong_mang_ao\">3.1.4\/ Chia nh\u1ecf h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ea3o<\/a><\/li><li><a href=\"#315_Xay_dung_bang_thong_tin\">3.1.5\/ X\u00e2y d\u1ef1ng b\u1ea3ng th\u00f4ng tin<\/a><\/li><\/ul><\/li><\/ul><\/li><li><a href=\"#4_Ung_dung_cua_chuyen_mach_Switch_layer_3\">4\/ \u1ee8ng d\u1ee5ng c\u1ee7a chuy\u1ec3n m\u1ea1ch Switch layer 3<\/a><\/li><li><a href=\"#5_Su_khac_nhau_giua_chuyen_mach_Switch_layer_2_va_chuyen_mach_Switch_layer_3\">5\/ S\u1ef1 kh\u00e1c nhau gi\u1eefa chuy\u1ec3n m\u1ea1ch Switch layer 2 v\u00e0 chuy\u1ec3n m\u1ea1ch Switch layer 3<\/a><\/li><\/ul><\/div>\n<h2><span id=\"1_Chuyen_mach_Switch_layer_3_la_gi\">1\/ Chuy\u1ec3n m\u1ea1ch Switch layer 3 l\u00e0 g\u00ec?<\/span><\/h2>\n<p><strong>Chuy\u1ec3n m\u1ea1ch layer 3<\/strong> l\u00e0 thi\u1ebft b\u1ecb c\u00f3 s\u1ef1 k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng gi\u1eefa <a href=\"https:\/\/vtechsolutions.vn\/blog\/bo-chuyen-mach-switch-la-gi\/\">switch<\/a> v\u00e0 <a href=\"https:\/\/vtechsolutions.vn\/blog\/bo-dinh-tuyen-router-la-gi\/\">router<\/a>. C\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng Switch Layer l\u00e0 thi\u1ebft b\u1ecb d\u00f9ng \u0111\u1ec3 chuy\u1ec3n m\u1ea1ch c\u00f3 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00f4ng t\u1eafc k\u1ebft n\u1ed1i nh\u1eefng thi\u1ebft b\u1ecb c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng VLAN. Nh\u1edd c\u00f4ng c\u1ee5 chuy\u1ec3n m\u1ea1ch n\u00e0y, t\u1ed1c \u0111\u1ed9 m\u1ea1ng nhanh h\u01a1n v\u00e0 t\u00edch h\u1ee3p \u0111\u1ecbnh tuy\u1ebfn IP th\u00f4ng minh.<\/p>\n<p>T\u00ecm hi\u1ec3u <strong>chuy\u1ec3n m\u1ea1ch layer 3 l\u00e0 g\u00ec<\/strong> s\u1ebd gi\u00fap b\u1ea1n c\u00f3 th\u00eam nh\u1eefng hi\u1ec3u bi\u1ebft nh\u1ea5t \u0111\u1ecbnh v\u1ec1 c\u00f4ng c\u1ee5 n\u00e0y. Nh\u00ecn chung, c\u00f4ng c\u1ee5 chuy\u1ec3n m\u1ea1ch Switch Layer l\u00e0 thi\u1ebft b\u1ecb r\u1ea5t c\u1ea7n thi\u1ebft gi\u00fap h\u1ed7 tr\u1ee3 th\u1ef1c hi\u1ec7n nh\u1eefng giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn ph\u1ea3i k\u1ec3 \u0111\u1ebfn nh\u01b0 ki\u1ec3m tra g\u00f3i th\u00f4ng tin, quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn, lu\u00e2n chuy\u1ec3n\u2026<\/p>\n<figure id=\"attachment_790\" aria-describedby=\"caption-attachment-790\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-790\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/Switch-Layer-3-e1680093653206.jpg\" alt=\"Switch Layer 3\" width=\"800\" height=\"437\" 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: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-790\" class=\"wp-caption-text\">Chuy\u1ec3n m\u1ea1ch Switch layer 3<\/figcaption><\/figure>\n<h2><span id=\"2_Nguyen_ly_hoat_dong_cua_chuyen_mach_Switch_layer_3\">2\/ Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a chuy\u1ec3n m\u1ea1ch Switch layer 3<\/span><\/h2>\n<p>Ngo\u00e0i vi\u1ec7c hi\u1ec3u <strong>Switch layer 3 l\u00e0 g\u00ec<\/strong>, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Switch layer 3 c\u0169ng l\u00e0 v\u1ea5n \u0111\u1ec1 nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m. Switch layer l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u00f3ng vai tr\u00f2 k\u1ebft n\u1ed1i v\u00e0 truy\u1ec1n t\u1ea3i th\u00f4ng tin \u1edf c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0 cu\u1ed1i l\u1ea1i v\u1edbi nhau. Switch layer 3 nh\u00ecn chung \u0111\u01b0\u1ee3c trang b\u1ecb \u0111a d\u1ea1ng t\u00ednh n\u0103ng h\u01a1n so v\u1edbi <a href=\"https:\/\/vtechsolutions.vn\/blog\/chuyen-mach-switch-layer-2-la-gi\/\">Switch layer 2<\/a>. Thi\u1ebft b\u1ecb n\u00e0y v\u1eeba \u0111\u1ea3m b\u1ea3o t\u00ednh n\u0103ng nh\u01b0 thi\u1ebft b\u1ecb Switch m\u1ea1ng v\u1eeba l\u01b0u c\u1eadp nh\u1eadt \u0111\u1ecba ch\u1ec9 MAC v\u00e0 \u0111\u1ecbnh tuy\u1ebfn nh\u01b0 router.<\/p>\n<ul>\n<li>Nh\u00ecn chung, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Switch layer 3 nh\u01b0 sau:<\/li>\n<li>PC-A g\u1eedi tin \u0111\u1ebfn PC-D qua k\u00eanh \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi switch.<\/li>\n<li>Chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u d\u1ea1ng khung d\u1eef li\u1ec7u v\u00e0 ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 MAC, l\u01b0u \u0111\u1ecba ch\u1ec9 trong b\u1ea3ng MAC v\u00e0 s\u1ed1 c\u1ed5ng \u0111\u1ebfn.<\/li>\n<li>Chuy\u1ec3n \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 MAC trong tr\u01b0\u1eddng MAC \u0111\u00edch v\u00e0 ki\u1ec3m tra b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 bi\u1ebft c\u00f3 m\u1ee5c nh\u1eadp \u0111\u1ecba ch\u1ec9 hay kh\u00f4ng.<\/li>\n<li>M\u1ee5c nh\u1eadp \u0111\u1ecba ch\u1ec9 MAC \u0111\u00edch c\u1ea7n li\u1ec7t k\u00ea trong b\u1ea3ng MAC \u0111\u1ec3 c\u00f4ng t\u1eafc ph\u00e1t d\u1eef li\u1ec7u khung \u0111\u1ebfn c\u00e1c c\u1ed5ng \u0111ang k\u1ebft n\u1ed1i.<\/li>\n<li>Nh\u1eadp khung \u1edf d\u1ea1ng g\u00f3i, so s\u00e1nh \u0111\u1ecba ch\u1ec9 IP c\u1ee7a PC-B, PC-C, PC-D v\u1edbi \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch.<\/li>\n<li>PC-B, PC-C t\u1eeb ch\u1ed1i g\u00f3i tin \u0111\u1ecba ch\u1ec9 kh\u00f4ng kh\u1edbp \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch. PC-D kh\u1edbp v\u1edbi \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch.<\/li>\n<li>PC-D g\u1eedi g\u00f3i x\u00e1c nh\u1eadn qua switch.<\/li>\n<li>Chuy\u1ec3n khung x\u00e1c nh\u1eadn tr\u00ean c\u1ed5ng 4 v\u00e0 ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 MAC trong tr\u01b0\u1eddng h\u1ee3p MAC ngu\u1ed3n c\u00f9ng s\u1ed1 c\u1ed5ng \u0111\u1ebfn.<\/li>\n<li>Chuy\u1ec3n \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 MAC \u0111\u00edch v\u00e0 x\u00e1c minh m\u1ee5c nh\u1eadp \u0111\u1ecba ch\u1ec9 MAC.<\/li>\n<li>Switch \u0111\u00e3 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a c\u00e1c mode trong m\u1ea1ng v\u00e0 l\u01b0u tr\u1eef c\u00e1c node \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/li>\n<\/ul>\n<figure id=\"attachment_851\" aria-describedby=\"caption-attachment-851\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-851\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/chuyen-mach-switch-layer-3-1024x654.jpg\" alt=\"Chuy\u1ec3n m\u1ea1ch Switch layer 3\" width=\"800\" height=\"511\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/chuyen-mach-switch-layer-3-1024x654.jpg 1024w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/chuyen-mach-switch-layer-3-300x192.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/chuyen-mach-switch-layer-3-768x491.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/chuyen-mach-switch-layer-3.jpg 1094w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-851\" class=\"wp-caption-text\">S\u01a1 \u0111\u1ed3 l\u1eafp \u0111\u1eb7t Switch layer 3<\/figcaption><\/figure>\n<h2><span id=\"3_Tinh_nang_noi_bat_cua_Switch_layer_3\">3\/ T\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3<\/span><\/h2>\n<p>Chuy\u1ec3n m\u1ea1ch layer 3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng truy\u1ec1n \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ed9ng. Nh\u1eefng giao th\u1ee9c n\u00e0y hi\u1ec7n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 li\u00ean k\u1ebft nh\u1eefng m\u1ea1ng l\u1edbn v\u1edbi nhau v\u00e0 \u0111\u1ed3ng th\u1eddi chia s\u1ebb b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a c\u00e1c m\u1ea1ng n\u00e0y. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb Switch nh\u1eb1m x\u1eed l\u00fd \u0111\u1ecbnh tuy\u1ebfn li\u00ean v\u00e0 d\u00f9ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u00e0i nguy\u00ean Router trong h\u1ec7 th\u1ed1ng LAN c\u00f9ng c\u00e1c t\u01b0\u1eddng l\u1eeda kh\u00e1c.<\/p>\n<p>C\u1ee5 th\u1ec3 c\u00e1c ch\u1ee9c n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3 v\u00e0 s\u1ef1 kh\u00e1c nhau gi\u1eefa hai th\u1ebf h\u1ec7 Switch layer 3, Switch layer 2 nh\u01b0 sau:<\/p>\n<h3><span id=\"31_Chuc_nang_noi_bat_cua_Switch_layer_3\">3.1\/ Ch\u1ee9c n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3<\/span><\/h3>\n<p>Switch layer 3 l\u00e0 thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch \u0111a ch\u1ee9c n\u0103ng r\u1ea5t ph\u1ed5 bi\u1ebfn hi\u1ec7n nay. Ngo\u00e0i d\u00f9ng \u0111\u1ec3 li\u00ean th\u00f4ng m\u1ea1ng, thi\u1ebft b\u1ecb c\u00f2n nhi\u1ec1u ch\u1ee9c n\u0103ng th\u00f4ng minh kh\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h4><span id=\"311_Thuc_hien_dinh_tuyen_Router\">3.1.1\/ Th\u1ef1c hi\u1ec7n \u0111\u1ecbnh tuy\u1ebfn Router<\/span><\/h4>\n<p>Ch\u1ee9c n\u0103ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ecbnh tuy\u1ebfn router nh\u1eb1m li\u00ean th\u00f4ng v\u1edbi nh\u1eefng m\u1ea1ng con kh\u00e1c trong h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ea3o. Switch layer 3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 h\u1ed7 tr\u1ee3 truy\u1ec1n t\u1ea3i t\u1eadp tin \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n, b\u1ea3o m\u1eadt tuy\u1ec7t \u0111\u1ed1i. Trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1eadp tin, layer \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00fang th\u1eddi \u0111i\u1ec3m v\u00e0 \u0111\u1ecba ch\u1ec9 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh s\u1eb5n. Nh\u1edd v\u1eady, ng\u01b0\u1eddi d\u00f9ng s\u1ebd h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c t\u1ed1i \u0111a c\u00e1c s\u1ef1 c\u1ed1 truy c\u1eadp ngo\u00e0i k\u1ebft n\u1ed1i.<\/p>\n<h4><span id=\"312_Xu_ly_tac_nghen_bang_thong\">3.1.2\/ X\u1eed l\u00fd t\u1eafc ngh\u1ebdn b\u0103ng th\u00f4ng<\/span><\/h4>\n<p>Ch\u1ee9c n\u0103ng quan tr\u1ecdng ti\u1ebfp theo ph\u1ea3i k\u1ec3 \u0111\u1ebfn c\u1ee7a chuy\u1ec3n m\u1ea1ch layer 3 l\u00e0 ki\u1ec3m so\u00e1t v\u00e0 x\u1eed l\u00fd c\u00e1c v\u1ea5n \u0111\u1ec1 t\u1eafc ngh\u1ebdn b\u0103ng th\u00f4ng. Khi nhu c\u1ea7u s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng t\u0103ng l\u00ean, c\u00e1c c\u1ed5ng SFP s\u1ebd ho\u1ea1t \u0111\u1ed9ng h\u1ebft c\u00f4ng su\u1ea5t v\u00e0 x\u1eed l\u00fd c\u00f4ng vi\u1ec7c di chuy\u1ec3n c\u00e1c t\u1eadp tin tr\u00ean h\u1ec7 th\u1ed1ng m\u1ea1ng.<\/p>\n<p>Hi\u1ec7n nay, h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch n\u00e0y \u0111\u1ec1u l\u00e0 \u0111i\u1ec3m k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y c\u00f3 th\u1ec3 x\u1eed l\u00fd 1G b\u0103ng th\u00f4ng ho\u1eb7c l\u1edbn h\u01a1n tu\u1ef3 m\u1ea1ng. Nh\u1eefng WAP c\u00f3 trong layer 3 s\u1ebd d\u00f9ng c\u1ed5ng Ethernet 1G k\u00e9p t\u1ed5ng h\u1ee3p c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y v\u00e0 t\u0103ng t\u1ed5ng dung l\u01b0\u1ee3ng b\u0103ng th\u00f4ng x\u1eed l\u00fd nh\u1eb1m h\u1ea1n ch\u1ebf t\u1eafc ngh\u1ebdn b\u0103ng th\u00f4ng.<\/p>\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\">T\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Switch layer 3<\/figcaption><\/figure>\n<h4><span id=\"313_Ket_noi_nhieu_segment\">3.1.3\/ K\u1ebft n\u1ed1i nhi\u1ec1u segment<\/span><\/h4>\n<p>Trong h\u1ec7 th\u1ed1ng m\u1ea1ng ch\u00ednh s\u1ebd c\u00f3 nhi\u1ec1u m\u00e1y t\u00ednh c\u00f9ng tham gia. Khi hai m\u00e1y t\u00ednh c\u00f9ng li\u00ean k\u1ebft th\u00ec chuy\u1ec3n m\u1ea1ch layer 3 s\u1ebd c\u00f3 nhi\u1ec7m v\u1ee5 t\u00ecm hi\u1ec3u thi\u1ebft b\u1ecb m\u00e1y t\u00ednh n\u00e0o \u0111ang k\u1ebft n\u1ed1i v\u1edbi c\u1ed5ng c\u1ee7a m\u00ecnh. Thi\u1ebft b\u1ecb n\u00e0y s\u1ebd thi\u1ebft l\u1eadp m\u1ea1ng \u1ea3o gi\u1eefa hai c\u1ed5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch t\u1ed1t nh\u1ea5t, tr\u00e1nh gi\u00e1n \u0111o\u1ea1n chuy\u1ec3n ti\u1ebfp th\u00f4ng tin.<\/p>\n<h4><span id=\"314_Chia_nho_he_thong_mang_ao\">3.1.4\/ Chia nh\u1ecf h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ea3o<\/span><\/h4>\n<p>Th\u00eam m\u1ed9t t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a Switch Layer 3 l\u00e0 chia nh\u1ecf h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ea3o th\u00e0nh c\u00e1c m\u1ea1ng nh\u1ecf h\u01a1n gi\u00fap thi\u1ebft b\u1ecb d\u1ec5 d\u00e0ng h\u01a1n khi c\u1ea7n k\u1ebft n\u1ed1i. Nh\u1edd ch\u1ee9c n\u0103ng n\u00e0y, chuy\u1ec3n m\u1ea1ch layer 3 s\u1ebd gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c mi\u1ec1n \u0111\u1ee5ng \u0111\u1ed9 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/p>\n<h4><span id=\"315_Xay_dung_bang_thong_tin\">3.1.5\/ X\u00e2y d\u1ef1ng b\u1ea3ng th\u00f4ng tin<\/span><\/h4>\n<p>Chuy\u1ec3n m\u1ea1ch Switch layer 3 c\u00f3 t\u00ednh n\u0103ng h\u1ed7 tr\u1ee3 x\u00e2y d\u1ef1ng b\u1ea3ng t\u1ed5ng h\u1ee3p li\u00ean quan \u0111\u1ebfn g\u00f3i th\u00f4ng tin. Nh\u1edd v\u1eady, qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i th\u00f4ng tin s\u1ebd tr\u00e1nh x\u1ea3y ra nh\u1ea7m l\u1eabn v\u1ec1 \u0111\u1ecba ch\u1ec9 chuy\u1ec3n \u0111\u1ebfn, \u0111\u1ea3m b\u1ea3o chuy\u1ec3n tin \u0111\u1ebfn \u0111\u00fang \u0111\u1ecba ch\u1ec9 ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u. C\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch s\u1ebd nh\u1eadn d\u1eef li\u1ec7u \u1edf c\u1ed5ng port v\u00e0 chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c m\u00e1y t\u00ednh trong h\u1ec7 th\u1ed1ng.<\/p>\n<h2><span id=\"4_Ung_dung_cua_chuyen_mach_Switch_layer_3\">4\/ \u1ee8ng d\u1ee5ng c\u1ee7a chuy\u1ec3n m\u1ea1ch Switch layer 3<\/span><\/h2>\n<p>Chuy\u1ec3n m\u1ea1ch layer 3 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng s\u1eed d\u1ee5ng trong nhi\u1ec1u h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00f4ng nghi\u1ec7p \u00e2m thanh v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng AV. C\u1ee5 th\u1ec3 \u1ee9ng d\u1ee5ng c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y trong th\u1ef1c t\u1ebf nh\u01b0 sau:<\/p>\n<ul>\n<li><strong>T\u1ea1o m\u1ea1ng VLANs \u1ea3o:<\/strong> Thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch layer 3 t\u1ea1o h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ea3o h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp. C\u00e1c router tr\u01b0\u1edbc \u0111\u00f3 th\u01b0\u1eddng \u0111\u1ea3m nh\u1eadn c\u00f4ng vi\u1ec7c n\u00e0y nh\u01b0ng hi\u1ec7n nay \u0111a s\u1ed1 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng l\u1ef1a ch\u1ecdn chuy\u1ec3n m\u1ea1ch layer 3 v\u00ec nhi\u1ec1u ch\u1ee9c n\u0103ng h\u1eefu \u00edch m\u00e0 thi\u1ebft b\u1ecb mang l\u1ea1i.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng AV:<\/strong> AV t\u1eadn d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch nh\u1eafm t\u1ea1o ra c\u00e1c t\u00ednh n\u0103ng ri\u00eang bi\u1ec7t cho \u1ee9ng d\u1ee5ng khi c\u1ea7n s\u1eeda \u0111\u1ed5i. Nh\u1edd s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y, m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng AV hi\u1ec7n nay c\u00f3 giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn \u0111a h\u01b0\u1edbng \u0111\u1ed9ng t\u0103ng tr\u1ea3i nghi\u1ec7m cho ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-791\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/phan-loai-bo-chuyen-mach-switch.jpg\" alt=\"ph\u00e2n lo\u1ea1i b\u1ed9 chuy\u1ec3n m\u1ea1ch switch\" width=\"800\" height=\"336\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/phan-loai-bo-chuyen-mach-switch.jpg 800w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/phan-loai-bo-chuyen-mach-switch-300x126.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/phan-loai-bo-chuyen-mach-switch-768x323.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li>\n<\/ul>\n<h2><span id=\"5_Su_khac_nhau_giua_chuyen_mach_Switch_layer_2_va_chuyen_mach_Switch_layer_3\">5\/ S\u1ef1 kh\u00e1c nhau gi\u1eefa chuy\u1ec3n m\u1ea1ch Switch layer 2 v\u00e0 chuy\u1ec3n m\u1ea1ch Switch layer 3<\/span><\/h2>\n<p>Th\u1ef1c t\u1ebf c\u1ea3 hai lo\u1ea1i chuy\u1ec3n m\u1ea1ch tr\u00ean \u0111\u1ec1u c\u00f3 \u0111i\u1ec3m chung l\u00e0 trang b\u1ecb b\u1ea3ng CAM ch\u1ee9a th\u00f4ng tin c\u1ee7a \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c cho g\u00f3i tin. Tuy nhi\u00ean, Switch layer 3 hi\u1ec7n nay v\u1eabn \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao h\u01a1n v\u00ec s\u1edf h\u1eefu nhi\u1ec1u t\u00ednh n\u0103ng v\u01b0\u1ee3t tr\u1ed9i.<br \/>\nTrong khi Switch layer 2 ch\u1ec9 th\u1ef1c hi\u1ec7n giao th\u1ee9c th\u1ee7 c\u00f4ng th\u00ec layer 3 ph\u00e2n lo\u1ea1i QoS d\u1ef1a tr\u00ean IP. Ngo\u00e0i ra, v\u1ec1 k\u1ebft c\u1ea5u layer 3 \u0111\u1ecbnh tuy\u1ebfn gi\u1ed1ng nh\u01b0 router gi\u00fap li\u00ean th\u00f4ng d\u1ec5 d\u00e0ng v\u1edbi c\u00e1c m\u1ea1ng con v\u00e0 m\u1ea1ng \u1ea3o. Trong khi \u0111\u00f3, layer 2 ch\u1ec9 truy xu\u1ea5t \u0111\u1ecba ch\u1ec9 MAC c\u00f3 trong frame.<\/p>\n<p>Switch layer 3 \u0111\u01b0\u1ee3c trang b\u1ecb th\u00eam b\u1ea3ng FIB nh\u1eadn nhi\u1ec7m v\u1ee5 chuy\u1ec3n tin v\u00e0 n\u1ed9i dung nh\u01b0 \u0111\u1ecba ch\u1ec9 IP, \u0111\u1ecba ch\u1ec9 MAC. Chuy\u1ec3n m\u1ea1ch layer 3 \u0111\u1ed3ng th\u1eddi c\u00f2n c\u00f3 th\u00eam c\u00e1c t\u00ednh n\u0103ng kh\u00e1c nh\u01b0 t\u00ednh n\u0103ng ACL truy\u1ec1n t\u1ea3i t\u1eadp tin b\u1ea3o m\u1eadt cao ng\u0103n ch\u1eb7n k\u1ebft n\u1ed1i kh\u00f4ng c\u00f3 quy\u1ec1n truy c\u1eadp.<\/p>\n<p>B\u00e0i vi\u1ebft tr\u00ean l\u00e0 nh\u1eefng chia s\u1ebb v\u1ec1 chuy\u1ec3n m\u1ea1ch layer 3 v\u00e0 c\u00e1c th\u00f4ng tin li\u00ean quan v\u1ec1 c\u00f4ng c\u1ee5 n\u00e0y. Hy v\u1ecdng \u0111\u00e2y l\u00e0 c\u00e1c ki\u1ebfn th\u1ee9c h\u1eefu \u00edch gi\u00fap \u0111\u1ee1 v\u00e0 h\u1ed7 tr\u1ee3 b\u1ea1n trong qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c v\u1edbi h\u1ec7 th\u1ed1ng m\u1ea1ng.<\/p>\n<p><strong>Tham kh\u1ea3o th\u00eam:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/so-sanh-chuyen-mach-switch-layer-2-va-chuyen-mach-switch-layer-3\/\">So s\u00e1nh \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Switch layer 2, Switch layer 2+ v\u00e0 Switch layer 3<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/bo-chuyen-mach-switch-la-gi\/#4_So_sanh_giua_thiet_bi_bo_chuyen_mach_Switch_Hub_va_Router_khac_nhau_nhu_the_nao\">So s\u00e1nh gi\u1eefa thi\u1ebft b\u1ecb b\u1ed9 chuy\u1ec3n m\u1ea1ch Switch, Hub v\u00e0 Router kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/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>Chuy\u1ec3n m\u1ea1ch switch layer 3 l\u00e0 c\u00f4ng c\u1ee5 quen thu\u1ed9c c\u1ee7a c\u00e1c nh\u00e0 qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee5c b\u1ed9 c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c hay doanh nghi\u1ec7p. Tuy nhi\u00ean, kh\u00f4ng<\/p>\n","protected":false},"author":1,"featured_media":851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181,5],"tags":[],"class_list":["post-814","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>Chuy\u1ec3n m\u1ea1ch switch layer 3 l\u00e0 g\u00ec? T\u00ednh n\u0103ng c\u1ee7a switch layer 3<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 chuy\u1ec3n m\u1ea1ch switch layer 3 l\u00e0 g\u00ec? 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