{"id":579,"date":"2023-03-07T08:38:07","date_gmt":"2023-03-07T08:38:07","guid":{"rendered":"https:\/\/vtechsolutions.vn\/blog\/?p=579"},"modified":"2023-10-17T13:04:25","modified_gmt":"2023-10-17T13:04:25","slug":"he-thong-mang-wan-la-gi","status":"publish","type":"post","link":"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-wan-la-gi\/","title":{"rendered":"H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec? M\u1ea1ng WAN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"<p><a href=\"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-wan-la-gi\/\">H\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/a> l\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng di\u1ec7n r\u1ed9ng xu\u1ea5t hi\u1ec7n s\u1edbm nh\u1ea5t ngay sau khi m\u1ea1ng \u0111i\u1ec7n to\u00e1n ra \u0111\u1eddi. \u0110\u1ebfn nay h\u1ec7 th\u1ed1ng m\u1ea1ng WAN v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong c\u00e1c c\u00f4ng ty, doanh nghi\u1ec7p. Chi ti\u1ebft \u0111\u1eb7c \u0111i\u1ec3m, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 giao th\u1ee9c m\u1ea1ng WAN s\u1ebd \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong 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_He_thong_mang_WAN_la_gi\">1\/ H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#2_He_thong_mang_WAN_hoat_dong_nhu_the_nao\">2\/ H\u1ec7 th\u1ed1ng m\u1ea1ng WAN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li><a href=\"#3_Dac_diem_cua_he_thong_mang_WAN\">3\/ \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/a><ul><li><a href=\"#31_Uu_diem_cua_mang_WAN\">3.1\/ \u01afu \u0111i\u1ec3m c\u1ee7a m\u1ea1ng WAN<\/a><\/li><li><a href=\"#32_Nhuoc_diem_cua_mang_WAN\">3.2\/ Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a m\u1ea1ng WAN<\/a><\/li><\/ul><\/li><li><a href=\"#4_Phan_biet_mang_WAN_va_mang_LAN\">4\/ Ph\u00e2n bi\u1ec7t m\u1ea1ng WAN v\u00e0 m\u1ea1ng LAN<\/a><ul><li><a href=\"#41_Phan_biet_qua_toc_do_mang\">4.1\/ Ph\u00e2n bi\u1ec7t qua t\u1ed1c \u0111\u1ed9 m\u1ea1ng<\/a><\/li><li><a href=\"#42_Phan_biet_qua_chuyen_doi_phan_cung\">4.2\/ Ph\u00e2n bi\u1ec7t qua chuy\u1ec3n \u0111\u1ed5i ph\u1ea7n c\u1ee9ng<\/a><\/li><li><a href=\"#43_Phan_biet_qua_pham_vi_ung_dung\">4.3\/ Ph\u00e2n bi\u1ec7t qua ph\u1ea1m vi \u1ee9ng d\u1ee5ng<\/a><\/li><li><a href=\"#44_Phan_biet_qua_chuan_ket_noi\">4.4\/ Ph\u00e2n bi\u1ec7t qua chu\u1ea9n k\u1ebft n\u1ed1i<\/a><\/li><\/ul><\/li><li><a href=\"#5_Khi_nao_mot_doanh_nghiep_can_trang_bi_he_thong_mang_WAN\">5\/ Khi n\u00e0o m\u1ed9t doanh nghi\u1ec7p c\u1ea7n trang b\u1ecb h\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/a><\/li><\/ul><\/div>\n<h2><span id=\"1_He_thong_mang_WAN_la_gi\">1\/ H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec?<\/span><\/h2>\n<p>H\u1ec7 th\u1ed1ng m\u1ea1ng Wire Area Network (WAN) c\u00f3 nhi\u1ec1u t\u00ean g\u1ecdi kh\u00e1c nh\u01b0 m\u1ea1ng di\u1ec7n r\u1ed9ng, m\u1ea1ng c\u00f3 d\u00e2y,&#8230; H\u1ec7 th\u1ed1ng m\u1ea1ng n\u00e0y g\u1ed3m nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng k\u1ebft n\u1ed1i v\u1edbi nhau tr\u00ean di\u1ec7n r\u1ed9ng (th\u01b0\u1eddng t\u1eeb 20 thi\u1ebft b\u1ecb tr\u1edf n\u00ean). <strong>H\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/strong> l\u1edbn nh\u1ea5t l\u00e0 m\u1ea1ng Internet to\u00e0n c\u1ea7u, \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u m\u1ea1ng WAN nh\u1ecf cho t\u1eebng khu v\u1ef1c s\u1eed d\u1ee5ng.<\/p>\n<figure id=\"attachment_690\" aria-describedby=\"caption-attachment-690\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-690\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-WAN-la-gi-1024x688.jpg\" alt=\"h\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec\" width=\"800\" height=\"537\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-WAN-la-gi-1024x688.jpg 1024w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-WAN-la-gi-300x201.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-WAN-la-gi-768x516.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/he-thong-mang-WAN-la-gi.jpg 1105w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-690\" class=\"wp-caption-text\">H\u1ec7 th\u1ed1ng m\u1ea1ng WAN g\u1ed3m nhi\u1ec1u thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i<\/figcaption><\/figure>\n<p>V\u1edbi c\u00e1c c\u00f4ng ty, doanh nghi\u1ec7p hay \u0111\u01a1n v\u1ecb nh\u1ecf th\u00ec m\u1ea1ng WAN \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, ch\u1ee7 y\u1ebfu d\u00f9ng m\u1ea1ng c\u1ee5c b\u1ed9 LAN. Trong m\u1ea1ng c\u1ee5c b\u1ed9 LAN c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi nhau v\u00e0 c\u00f9ng truy c\u1eadp v\u00e0o t\u00e0i nguy\u00ean c\u1ee5c b\u1ed9 c\u1ee7a m\u1ea1ng. N\u1ebfu c\u1ea7n truy c\u1eadp v\u00e0o t\u00e0i nguy\u00ean kh\u00f4ng c\u00f3 s\u1eb5n th\u00ec thi\u1ebft b\u1ecb c\u1ee7a LAN s\u1ebd ph\u1ea3i truy c\u1eadp li\u00ean k\u1ebft ngo\u00e0i. <strong>H\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/strong> s\u1ebd g\u1ed3m nhi\u1ec1u m\u1ea1ng LAN nh\u1ecf nh\u01b0 v\u1eady, n\u00ean t\u00e0i nguy\u00ean c\u1ee7a h\u1ec7 th\u1ed1ng r\u1ea5t l\u1edbn.<\/p>\n<p>\u1ede c\u00e1c t\u1eadp \u0111o\u00e0n, c\u00f4ng ty \u0111a qu\u1ed1c gia th\u00ec h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee5c b\u1ed9 WAN th\u01b0\u1eddng l\u00e0 h\u1ec7 th\u1ed1ng chia s\u1ebb d\u1eef li\u1ec7u ch\u00ednh. H\u1ec7 th\u1ed1ng s\u1ebd k\u1ebft n\u1ed1i c\u00e1c m\u1ea1ng LAN \u1edf c\u00e1c v\u0103n ph\u00f2ng, tr\u1ee5 s\u1edf kh\u00e1c nhau. Th\u00f4ng qua \u0111\u00f3 c\u00e1c chi nh\u00e1nh, tr\u1ee5 s\u1edf s\u1ebd d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u00e0 chia s\u1ebb d\u1eef li\u1ec7u v\u1edbi nhau.<\/p>\n<p><strong>&gt;&gt;&gt; Xem th\u00eam:<\/strong> <a href=\"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-may-tinh-la-gi\/\">H\u1ec7 th\u1ed1ng m\u1ea1ng l\u00e0 g\u00ec? C\u00e1c m\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng m\u1ea1ng cho doanh nghi\u1ec7p<\/a><\/p>\n<h2><span id=\"2_He_thong_mang_WAN_hoat_dong_nhu_the_nao\">2\/ H\u1ec7 th\u1ed1ng m\u1ea1ng WAN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/span><\/h2>\n<p>M\u1ea1ng di\u1ec7n r\u1ed9ng WAN c\u1ee7a m\u1ed9t \u0111\u01a1n v\u1ecb th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a m\u1ed9t b\u00ean cung c\u1ea5p th\u1ee9 ba, th\u01b0\u1eddng l\u00e0 c\u00f4ng ty \u0111i\u1ec7n tho\u1ea1i. \u0110\u01a1n v\u1ecb n\u00e0y s\u1ebd cung c\u1ea5p d\u1ecbch v\u1ee5 gi\u00fap k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c m\u1ea1ng LAN c\u1ee5c b\u1ed9 \u1edf kho\u1ea3ng c\u00e1ch xa.<\/p>\n<figure id=\"attachment_691\" aria-describedby=\"caption-attachment-691\" style=\"width: 746px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-691\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/cau-tao-he-thong-mang-WAB.jpg\" alt=\"c\u1ea5u t\u1ea1o h\u1ec7 th\u1ed1ng m\u1ea1ng WAN\" width=\"746\" height=\"681\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/cau-tao-he-thong-mang-WAB.jpg 746w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/cau-tao-he-thong-mang-WAB-300x274.jpg 300w\" sizes=\"auto, (max-width: 746px) 100vw, 746px\" \/><figcaption id=\"caption-attachment-691\" class=\"wp-caption-text\">C\u1ea5u h\u00ecnh m\u1ea1ng WAN c\u01a1 b\u1ea3n<\/figcaption><\/figure>\n<p>M\u1ed9t d\u1eef li\u1ec7u t\u1eeb thi\u1ebft b\u1ecb m\u1ea1ng trong WAN \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i nh\u01b0 sau:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb m\u1ea1ng trong WAN truy\u1ec1n t\u1ea3i \u0111\u1ebfn thi\u1ebft b\u1ecb x\u1eed l\u00fd g\u1ecdi l\u00e0 DTE.<\/li>\n<li>G\u00f3i d\u1eef li\u1ec7u sau khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn thi\u1ebft b\u1ecb DCE c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng WAN.<\/li>\n<li>Thi\u1ebft b\u1ecb DCE s\u1ebd ph\u00e2n lo\u1ea1i v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 \u0111\u00edch c\u1ee7a g\u00f3i tin, sau \u0111\u00f3 truy\u1ec1n trong h\u1ec7 th\u1ed1ng \u0111i \u0111\u1ebfn m\u00e1y ch\u1ee7 ho\u1eb7c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch.<\/li>\n<li>Thi\u1ebft b\u1ecb \u0111\u00edch nh\u1eadn \u0111\u01b0\u1ee3c g\u00f3i d\u1eef li\u1ec7u v\u00e0 k\u1ebft th\u00fac h\u00e0nh tr\u00ecnh.<\/li>\n<\/ul>\n<p>Nh\u01b0 v\u1eady v\u1ec1 c\u01a1 b\u1ea3n c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a <strong>h\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/strong> kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p. Tuy nhi\u00ean h\u1ec7 th\u1ed1ng ph\u1ea3i s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a b\u00ean th\u1ee9 ba, vi\u1ec7c g\u1eedi nh\u1eadn d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng v\u00ec v\u1eady s\u1ebd qua nhi\u1ec1u b\u01b0\u1edbc h\u01a1n. Kho\u1ea3ng c\u00e1ch g\u1eedi c\u00e0ng xa, th\u00f4ng qua c\u00e0ng nhi\u1ec1u c\u01a1 s\u1edf v\u00e0 thi\u1ebft b\u1ecb trung gian th\u00ec t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i c\u00e0ng ch\u1eadm.<\/p>\n<p>T\u00f9y v\u00e0o kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c khu v\u1ef1c m\u00e0 doanh nghi\u1ec7p c\u00f3 th\u1ec3 thu\u00ea c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng WAN kh\u00e1c nhau c\u1ee7a b\u00ean th\u1ee9 3. C\u00f3 th\u1ec3 l\u00e0 m\u1ea1ng WAN trong c\u00f9ng 1 t\u1ec9nh, c\u00f9ng 1 qu\u1ed1c gia, c\u00f9ng 1 khu v\u1ef1c ho\u1eb7c to\u00e0n c\u1ea7u. Thu\u00ea c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng tr\u00ean quy m\u00f4 c\u00e0ng l\u1edbn th\u00ec gi\u00e1 thu\u00ea c\u00e0ng \u0111\u1eaft. Nh\u01b0 v\u1eady h\u1ec7 th\u1ed1ng m\u1ea1ng WAN c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i kh\u00f4ng gi\u1edbi h\u1ea1n ph\u1ea1m vi, kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd.<\/p>\n<h2><span id=\"3_Dac_diem_cua_he_thong_mang_WAN\">3\/ \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/span><\/h2>\n<p>H\u1ec7 th\u1ed1ng m\u1ea1ng di\u1ec7n r\u1ed9ng WAN d\u00f9 ph\u00e1t tri\u1ec3n s\u1edbm nh\u1ea5t nh\u01b0ng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn \u0111\u1ebfn nay do c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m. M\u1ea1ng WAN l\u1edbn nh\u1ea5t v\u00e0 \u0111i\u1ec3n h\u00ecnh nh\u1ea5t \u0111\u00f3 l\u00e0 h\u1ec7 th\u1ed1ng Internet to\u00e0n c\u1ea7u &#8211; cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi k\u1ebft n\u1ed1i v\u00e0 chia s\u1ebb d\u1eef li\u1ec7u v\u1edbi nhau d\u1ec5 d\u00e0ng. Tuy v\u1eady m\u1ea1ng WAN c\u0169ng c\u00f3 nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang.<\/p>\n<h3><span id=\"31_Uu_diem_cua_mang_WAN\">3.1\/ \u01afu \u0111i\u1ec3m c\u1ee7a m\u1ea1ng WAN<\/span><\/h3>\n<p>M\u1ea1ng WAN gi\u00fap k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c v\u0103n ph\u00f2ng, chi nh\u00e1nh \u1edf kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd xa c\u00f3 th\u1ec3 gi\u1eefa c\u00e1c t\u1ec9nh th\u00e0nh trong c\u00f9ng 1 qu\u1ed1c gia ho\u1eb7c gi\u1eefa c\u00e1c qu\u1ed1c gia, khu v\u1ef1c kh\u00e1c nhau tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n<ul>\n<li>M\u1ea1ng WAN gi\u00fap truy\u1ec1n t\u1ea3i l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u c\u00f9ng m\u1ed9t l\u00fac gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng trong h\u1ec7 th\u1ed1ng v\u1edbi t\u1ed1c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh.<\/li>\n<li>M\u1ea1ng WAN c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i t\u1eeb m\u00e1y t\u00ednh b\u00e0n, laptop \u0111\u1ebfn \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t, m\u00e1y t\u00ednh b\u1ea3ng, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n tr\u00f2 ch\u01a1i,&#8230;<\/li>\n<li>M\u1ea1ng WAN s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng k\u1ebft n\u1ed1i c\u1ee7a b\u00ean th\u1ee9 ba, do v\u1eady d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng ph\u1ea1m vi ho\u1eb7c thay \u0111\u1ed5i l\u1ef1a ch\u1ecdn k\u1ebft n\u1ed1i n\u1ebfu mu\u1ed1n.<\/li>\n<li>H\u1ed7 tr\u1ee3 chia s\u1ebb nhi\u1ec1u lo\u1ea1i d\u1eef li\u1ec7u, t\u1ec7p tin v\u1edbi nhau c\u00f3 t\u00ednh b\u1ea3o m\u1eadt cao.<\/li>\n<li>H\u1ec7 th\u1ed1ng m\u1ea1ng WAN gi\u00fap k\u1ebft n\u1ed1i kh\u00f4ng gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd<\/li>\n<li>M\u1ea1ng WAN k\u1ebft n\u1ed1i c\u00e1c m\u1ea1ng LAN nh\u1ecf v\u1edbi nhau, ch\u1ee9a v\u00e0 chia s\u1ebb ph\u1ea7n m\u1ec1m, t\u00e0i nguy\u00ean l\u1edbn.<\/li>\n<\/ul>\n<figure id=\"attachment_688\" aria-describedby=\"caption-attachment-688\" style=\"width: 930px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-688\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-he-thong-mang-WAN.jpg\" alt=\"\u01b0u \u0111i\u1ec3m h\u1ec7 th\u1ed1ng m\u1ea1ng WAN\" width=\"930\" height=\"533\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-he-thong-mang-WAN.jpg 930w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-he-thong-mang-WAN-300x172.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/uu-diem-he-thong-mang-WAN-768x440.jpg 768w\" sizes=\"auto, (max-width: 930px) 100vw, 930px\" \/><figcaption id=\"caption-attachment-688\" class=\"wp-caption-text\">H\u1ec7 th\u1ed1ng m\u1ea1ng WAN gi\u00fap k\u1ebft n\u1ed1i kh\u00f4ng gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd<\/figcaption><\/figure>\n<h3><span id=\"32_Nhuoc_diem_cua_mang_WAN\">3.2\/ Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a m\u1ea1ng WAN<\/span><\/h3>\n<ul>\n<li>Chi ph\u00ed l\u1eafp \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh c\u1ee7a m\u1ea1ng WAN kh\u00e1 l\u1edbn, \u0111\u1eb7c bi\u1ec7t l\u00e0 chi ph\u00ed ban \u0111\u1ea7u.<\/li>\n<li>Qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng m\u1ea1ng WAN ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi m\u1ea1ng LAN hay c\u00e1c m\u1ea1ng quy m\u00f4 nh\u1ecf kh\u00e1c, do v\u1eady c\u1ea7n k\u1ef9 thu\u1eadt vi\u00ean ho\u1eb7c ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb c\u00f3 chuy\u00ean m\u00f4n gi\u1ecfi, nhi\u1ec1u kinh nghi\u1ec7m.<\/li>\n<li>M\u1ea1ng WAN khi x\u1ea3y ra s\u1ef1 c\u1ed1 th\u01b0\u1eddng c\u1ea7n th\u1eddi gian x\u1eed l\u00fd l\u00e2u h\u01a1n do h\u1ec7 th\u1ed1ng m\u1ea1ng v\u00e0 ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n t\u1ea3i ph\u1ee9c t\u1ea1p.<\/li>\n<li>Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng c\u1ee5c b\u1ed9 WAN c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng do v\u1ea5n \u0111\u1ec1 c\u1ee7a b\u00ean th\u1ee9 ba cung c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u00e0 d\u1ecbch v\u1ee5 m\u1ea1ng.<\/li>\n<li>M\u1ea1ng WAN d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng l\u1ea5y c\u1eafp d\u1eef li\u1ec7u do s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng chung c\u1ee7a b\u00ean th\u1ee9 ba, \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt ri\u00eang.<\/li>\n<\/ul>\n<p>Nh\u00ecn chung WAN v\u1eabn l\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng quan tr\u1ecdng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn hi\u1ec7n nay. D\u00f9 c\u00f3 nhi\u1ec1u h\u1ec7 th\u1ed1ng m\u1ea1ng m\u1edbi ra \u0111\u1eddi nh\u01b0 m\u1ea1ng LAN c\u1ee5c b\u1ed9, m\u1ea1ng MAN \u0111\u00f4 th\u1ecb hay m\u1ea1ng PAN c\u00e1 nh\u00e2n c\u0169ng kh\u00f4ng th\u1ec3 thay th\u1ebf m\u1ea1ng WAN di\u1ec7n r\u1ed9ng trong nh\u1eefng \u1ee9ng d\u1ee5ng \u0111\u1eb7c th\u00f9. Ng\u01b0\u1ee3c l\u1ea1i m\u1ea1ng WAN l\u1edbn c\u00f2n bao tr\u00f9m c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng nh\u1ecf MAN, LAN, PAN,&#8230;<\/p>\n<h2><span id=\"4_Phan_biet_mang_WAN_va_mang_LAN\">4\/ Ph\u00e2n bi\u1ec7t m\u1ea1ng WAN v\u00e0 m\u1ea1ng LAN<\/span><\/h2>\n<p>M\u1ea1ng WAN l\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng l\u1edbn bao g\u1ed3m nhi\u1ec1u <a href=\"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-lan-la-gi\/\">h\u1ec7 th\u1ed1ng m\u1ea1ng LAN<\/a> nh\u1ecf, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng tr\u00ean quy m\u00f4 r\u1ed9ng trong c\u00f9ng qu\u1ed1c gia ho\u1eb7c nhi\u1ec1u qu\u1ed1c gia tr\u00ean th\u1ebf gi\u1edbi. Hai h\u1ec7 th\u1ed1ng m\u1ea1ng n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u00e0 v\u1eadn h\u00e0nh theo c\u00e1c c\u00f4ng ngh\u1ec7 d\u1ea1ng t\u01b0\u01a1ng t\u1ef1 nhau. Ph\u00e2n bi\u1ec7t m\u1ea1ng WAN v\u00e0 LAN qua c\u00e1c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t sau:<\/p>\n<h3><span id=\"41_Phan_biet_qua_toc_do_mang\">4.1\/ Ph\u00e2n bi\u1ec7t qua t\u1ed1c \u0111\u1ed9 m\u1ea1ng<\/span><\/h3>\n<p>M\u1ea1ng WAN th\u01b0\u1eddng g\u1ed3m nhi\u1ec1u thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u1edf kho\u1ea3ng c\u00e1ch xa h\u01a1n nhi\u1ec1u so v\u1edbi m\u1ea1ng LAN c\u1ee5c b\u1ed9. Do \u0111\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u trong WAN kh\u00f4ng nhanh nh\u01b0 m\u1ea1ng n\u1ed9i b\u1ed9. Th\u00f4ng th\u01b0\u1eddng WAN s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i d\u00e2y cable, t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i m\u1ea1ng th\u01b0\u1eddng kh\u00f4ng l\u1edbn h\u01a1n 1 Gbps. Trong khi \u0111\u00f3 c\u00e1c m\u00e1y t\u00ednh trong m\u1ea1ng LAN c\u00f3 th\u1ec3 trao \u0111\u1ed5i d\u1eef li\u1ec7u v\u1edbi nhau r\u1ea5t nhanh, t\u1ed1c \u0111\u1ed9 l\u00ean t\u1edbi 10 Gbps th\u00f4ng qua card m\u1ea1ng.<\/p>\n<p><strong>&gt;&gt;&gt; Tham kh\u1ea3o th\u00eam:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuan-wifi-5-la-gi\/\">Chu\u1ea9n Wifi 5 l\u00e0 g\u00ec? Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a chu\u1ea9n Wifi 5<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/chuan-wifi-6-la-gi\/\">Chu\u1ea9n Wifi 6 l\u00e0 g\u00ec? Chu\u1ea9n Wifi 6 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n Wifi 5 \u1edf \u0111i\u1ec3m n\u00e0o?<\/a><\/li>\n<\/ul>\n<figure id=\"attachment_689\" aria-describedby=\"caption-attachment-689\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-689\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/toc-do-mang-WAN-1024x574.jpg\" alt=\"t\u1ed1c \u0111\u1ed9 m\u1ea1ng WAN\" width=\"640\" height=\"359\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/toc-do-mang-WAN-1024x574.jpg 1024w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/toc-do-mang-WAN-300x168.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/toc-do-mang-WAN-768x430.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/toc-do-mang-WAN.jpg 1053w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-689\" class=\"wp-caption-text\">T\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i c\u1ee7a m\u1ea1ng WAN th\u01b0\u1eddng th\u1ea5p h\u01a1n LAN<\/figcaption><\/figure>\n<h3><span id=\"42_Phan_biet_qua_chuyen_doi_phan_cung\">4.2\/ Ph\u00e2n bi\u1ec7t qua chuy\u1ec3n \u0111\u1ed5i ph\u1ea7n c\u1ee9ng<\/span><\/h3>\n<p>M\u1ea1ng n\u1ed9i b\u1ed9 LAN th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn kh\u00e1 \u0111\u01a1n gi\u1ea3n do s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u00edt v\u00e0 n\u1eb1m g\u1ea7n nhau. Nh\u01b0 v\u1eady s\u1ed1 l\u01b0\u1ee3ng v\u00e0 l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i trong m\u1ea1ng WAN kh\u00f4ng qu\u00e1 l\u1edbn. Trong khi \u0111\u00f3, m\u1ea1ng di\u1ec7n r\u1ed9ng WAN c\u1ea7n ph\u1ea7n c\u1ee9ng t\u1ed1t \u0111\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng l\u1edbn t\u00edn hi\u1ec7u v\u00e0 d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i (l\u00ean \u0111\u1ebfn h\u00e0ng tri\u1ec7u t\u00edn hi\u1ec7u trong 1 gi\u00e2y).<\/p>\n<h3><span id=\"43_Phan_biet_qua_pham_vi_ung_dung\">4.3\/ Ph\u00e2n bi\u1ec7t qua ph\u1ea1m vi \u1ee9ng d\u1ee5ng<\/span><\/h3>\n<p>H\u1ec7 th\u1ed1ng m\u1ea1ng LAN ch\u1ec9 ph\u00f9 h\u1ee3p cho c\u00e1c khu v\u1ef1c, t\u00f2a nh\u00e0 c\u00f3 ph\u1ea1m vi nh\u1ecf h\u01a1n 100 m\u00e9t. Ngo\u00e0i ra m\u1ea1ng LAN c\u0169ng kh\u00f4ng h\u1ed7 tr\u1ee3 s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb truy c\u1eadp l\u1edbn (th\u01b0\u1eddng nh\u1ecf h\u01a1n 20 thi\u1ebft b\u1ecb). C\u00e1c doanh nghi\u1ec7p, c\u00f4ng ty ho\u1eb7c khu v\u1ef1c c\u00f3 di\u1ec7n t\u00edch l\u1edbn h\u01a1n s\u1ebd c\u1ea7n s\u1eed d\u1ee5ng m\u1ea1ng WAN \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u1ea1ng LAN khu v\u1ef1c nh\u1ecf v\u1edbi nhau.<\/p>\n<h3><span id=\"44_Phan_biet_qua_chuan_ket_noi\">4.4\/ Ph\u00e2n bi\u1ec7t qua chu\u1ea9n k\u1ebft n\u1ed1i<\/span><\/h3>\n<p>M\u1ea1ng WAN s\u1eed d\u1ee5ng nhi\u1ec1u lo\u1ea1i k\u1ebft n\u1ed1i \u0111\u00e1p \u1ee9ng vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n m\u1ea1ng c\u00e1ch xa nhau. C\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng WAN ph\u1ed5 bi\u1ebfn nh\u01b0: Dedicate Connection (k\u1ebft n\u1ed1i d\u00e0nh ri\u00eang), Circuit &#8211; switched network (m\u1ea1ng chuy\u1ec3n m\u1ea1ch), Packet &#8211; switched (m\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i). C\u00e1c d\u1ecbch v\u1ee5 m\u1ea1ng di\u1ec7n r\u1ed9ng c\u0169ng r\u1ea5t \u0111a d\u1ea1ng nh\u01b0 PSTN (m\u1ea1ng chuy\u1ec3n m\u1ea1ch c\u00f4ng \u0111\u1ed9ng), Leased Line (\u0111\u01b0\u1eddng thu\u00ea ri\u00eang), X25, Frame Relay, ISDN, ATM,&#8230;<\/p>\n<p>Trong khi \u0111\u00f3 m\u1ea1ng n\u1ed9i b\u1ed9 LAN s\u1eed d\u1ee5ng chu\u1ea9n k\u1ebft n\u1ed1i Ethernet. C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng trong h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i v\u1edbi nhau \u0111\u01a1n gi\u1ea3n th\u00f4ng qua Ethernet d\u1ef1a v\u00e0o ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn. K\u1ebft n\u1ed1i n\u00e0y cho ph\u00e9p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh, l\u01b0u l\u01b0\u1ee3ng truy\u1ec1n l\u1edbn nh\u01b0ng ch\u1ec9 ph\u00f9 h\u1ee3p trong ph\u1ea1m vi d\u01b0\u1edbi 100 m\u00e9t.<\/p>\n<h2><span id=\"5_Khi_nao_mot_doanh_nghiep_can_trang_bi_he_thong_mang_WAN\">5\/ Khi n\u00e0o m\u1ed9t doanh nghi\u1ec7p c\u1ea7n trang b\u1ecb h\u1ec7 th\u1ed1ng m\u1ea1ng WAN<\/span><\/h2>\n<p>So v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng kh\u00e1c nh\u01b0 LAN hay MAN th\u00ec m\u1ea1ng WAN c\u00f3 chi ph\u00ed l\u1eafp \u0111\u1eb7t ban \u0111\u1ea7u r\u1ea5t cao. Do v\u1eady m\u1ea1ng WAN ch\u1ec9 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t s\u1eed d\u1ee5ng khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft. V\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t doanh nghi\u1ec7p hi\u1ec7n nay th\u00ec h\u1ec7 th\u1ed1ng m\u1ea1ng LAN c\u1ee5c b\u1ed9 v\u1eabn ph\u1ed5 bi\u1ebfn h\u01a1n c\u1ea3, tuy nhi\u00ean gi\u1edbi h\u1ea1n k\u1ebft n\u1ed1i c\u1ee7a m\u1ea1ng n\u00e0y l\u00e0 ch\u1ec9 \u00e1p d\u1ee5ng cho ph\u1ea1m vi nh\u1ecf h\u01a1n 100 m\u00e9t.<\/p>\n<p>Nh\u01b0 v\u1eady v\u1edbi c\u00e1c doanh nghi\u1ec7p c\u00f3 quy m\u00f4 l\u1edbn, ph\u1ea1m vi k\u1ebft n\u1ed1i l\u1edbn h\u01a1n 100 m\u00e9t th\u00ec ph\u1ea3i s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng m\u1ea1ng WAN m\u1edbi c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng. Ngo\u00e0i ra c\u00e1c doanh nghi\u1ec7p c\u00f3 nhi\u1ec1u chi nh\u00e1nh trong c\u00f9ng m\u1ed9t qu\u1ed1c gia ho\u1eb7c \u0111a qu\u1ed1c gia c\u0169ng c\u1ea7n c\u00f3 m\u1ea1ng WAN k\u1ebft n\u1ed1i c\u00e1c chi nh\u00e1nh v\u1edbi nhau. T\u1ea1i m\u1ed7i chi nh\u00e1nh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ea1ng LAN ho\u1eb7c WAN nh\u1ecf h\u01a1n t\u00f9y ch\u1ecdn.<\/p>\n<figure id=\"attachment_687\" aria-describedby=\"caption-attachment-687\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-687\" src=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/xay-dung-he-thong-mang-WAN-1024x560.jpg\" alt=\"x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng m\u1ea1ng WAN\" width=\"640\" height=\"350\" srcset=\"https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/xay-dung-he-thong-mang-WAN-1024x560.jpg 1024w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/xay-dung-he-thong-mang-WAN-300x164.jpg 300w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/xay-dung-he-thong-mang-WAN-768x420.jpg 768w, https:\/\/vtechsolutions.vn\/blog\/wp-content\/uploads\/2023\/03\/xay-dung-he-thong-mang-WAN.jpg 1052w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-687\" class=\"wp-caption-text\">H\u1ec7 th\u1ed1ng m\u1ea1ng WAN ph\u00f9 h\u1ee3p v\u1edbi doanh nghi\u1ec7p quy m\u00f4 l\u1edbn<\/figcaption><\/figure>\n<p>T\u00f9y theo nhu c\u1ea7u v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng m\u1ea1ng c\u1ee7a doanh nghi\u1ec7p m\u00e0 c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng WAN g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1ch th\u1ee9c giao ti\u1ebfp, truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u kh\u00e1c nhau. Chi ph\u00ed l\u1eafp \u0111\u1eb7t v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng v\u00ec v\u1eady c\u0169ng r\u1ea5t \u0111a d\u1ea1ng. Doanh nghi\u1ec7p n\u00ean t\u00ecm \u0111\u01a1n v\u1ecb chuy\u00ean c\u00f3 kinh nghi\u1ec7m \u0111\u1ec3 t\u01b0 v\u1ea5n gi\u1ea3i ph\u00e1p m\u1ea1ng ph\u00f9 h\u1ee3p, ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u1ea5t.<\/p>\n<p>Tr\u00ean \u0111\u00e2y VTech \u0111\u00e3 c\u00f9ng b\u1ea1n \u0111\u1ecdc t\u00ecm hi\u1ec3u v\u1ec1 m\u1ea1ng WAN v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ea1ng n\u00e0y trong doanh nghi\u1ec7p. N\u1ebfu c\u1ea7n t\u01b0 v\u1ea5n gi\u1ea3i ph\u00e1p v\u00e0 l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng m\u1ea1ng, h\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n nh\u00e9.<\/p>\n<p><strong>Tham kh\u1ea3o th\u00eam:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/quy-trinh-lap-dat-he-thong-mang\/\">Quy tr\u00ecnh l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng m\u1ea1ng v\u00e0 nh\u1eefng l\u01b0u \u00fd khi l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng m\u1ea1ng<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/he-thong-mang-ngoai-troi-outdoor-wifi-la-gi\/\">H\u1ec7 th\u1ed1ng m\u1ea1ng ngo\u00e0i tr\u1eddi l\u00e0 g\u00ec? L\u1ee3i \u00edch v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a Outdoor Wifi<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/thiet-bi-mang-bao-gom-nhung-gi-vai-tro-chuc-nang-cua-tung-thiet-bi-mang\/\">Thi\u1ebft b\u1ecb m\u1ea1ng bao g\u1ed3m nh\u1eefng g\u00ec? Vai tr\u00f2, ch\u1ee9c n\u0103ng c\u1ee7a t\u1eebng thi\u1ebft b\u1ecb m\u1ea1ng<\/a><\/li>\n<li><a href=\"https:\/\/vtechsolutions.vn\/blog\/cac-buoc-thiet-ke-he-thong-mang\/\">C\u00e1c b\u01b0\u1edbc thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng m\u1ea1ng? M\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng ho\u00e0n ch\u1ec9nh bao g\u1ed3m nh\u1eefng g\u00ec?<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng di\u1ec7n r\u1ed9ng xu\u1ea5t hi\u1ec7n s\u1edbm nh\u1ea5t ngay sau khi m\u1ea1ng \u0111i\u1ec7n to\u00e1n ra \u0111\u1eddi. \u0110\u1ebfn nay h\u1ec7 th\u1ed1ng m\u1ea1ng WAN v\u1eabn \u0111\u01b0\u1ee3c<\/p>\n","protected":false},"author":1,"featured_media":690,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181,5],"tags":[],"class_list":["post-579","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>H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec? 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M\u1ea1ng WAN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?\" \/>\n<meta property=\"og:description\" content=\"H\u1ec7 th\u1ed1ng m\u1ea1ng WAN l\u00e0 g\u00ec? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a m\u1ea1ng WAN nh\u01b0 th\u1ebf n\u00e0o? 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