{"id":1885,"date":"2026-07-29T02:05:02","date_gmt":"2026-07-29T02:05:02","guid":{"rendered":"https:\/\/viettelvtt.com\/?p=1885"},"modified":"2026-07-29T03:17:29","modified_gmt":"2026-07-29T03:17:29","slug":"loi-internet-viettel","status":"publish","type":"post","link":"https:\/\/viettelvtt.com\/loi-internet-viettel\/","title":{"rendered":"L\u1ed7i Internet Viettel: Nguy\u00ean Nh\u00e2n &#038; C\u00e1ch Kh\u1eafc Ph\u1ee5c"},"content":{"rendered":"<p><span style=\"font-family: 'times new roman', times, serif;\"><strong><a href=\"https:\/\/viettelvtt.com\/\">L\u1ed7i Internet Viettel<\/a> <\/strong>c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau nh\u01b0 m\u1ea5t m\u1ea1ng ho\u00e0n to\u00e0n, c\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c Internet, modem b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf, t\u1ed1c \u0111\u1ed9 t\u1ea3i ch\u1eadm, ping cao ho\u1eb7c k\u1ebft n\u1ed1i th\u01b0\u1eddng xuy\u00ean b\u1ecb gi\u00e1n \u0111o\u1ea1n. M\u1ed7i hi\u1ec7n t\u01b0\u1ee3ng c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb m\u1ed9t nguy\u00ean nh\u00e2n ri\u00eang, v\u00ec v\u1eady ng\u01b0\u1eddi d\u00f9ng c\u1ea7n ki\u1ec3m tra \u0111\u00fang tr\u00ecnh t\u1ef1 tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u1ea5u h\u00ecnh modem ho\u1eb7c g\u1ecdi k\u1ef9 thu\u1eadt vi\u00ean.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, s\u1ef1 c\u1ed1 kh\u00f4ng n\u1eb1m \u1edf \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang Viettel m\u00e0 xu\u1ea5t ph\u00e1t t\u1eeb v\u1ecb tr\u00ed \u0111\u1eb7t modem, thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i qu\u00e1 xa, d\u00e2y LAN b\u1ecb l\u1ecfng, \u0111i\u1ec7n tho\u1ea1i l\u01b0u sai c\u1ea5u h\u00ecnh m\u1ea1ng ho\u1eb7c c\u00f3 qu\u00e1 nhi\u1ec1u thi\u1ebft b\u1ecb c\u00f9ng s\u1eed d\u1ee5ng Internet. Nh\u1eefng l\u1ed7i n\u00e0y th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u1ef1 x\u1eed l\u00fd t\u1ea1i nh\u00e0 b\u1eb1ng c\u00e1c thao t\u00e1c \u0111\u01a1n gi\u1ea3n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu modem b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf, \u0111\u00e8n PON kh\u00f4ng s\u00e1ng, d\u00e2y c\u00e1p quang b\u1ecb \u0111\u1ee9t, modem t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i ho\u1eb7c to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb m\u1ea5t m\u1ea1ng trong th\u1eddi gian d\u00e0i, ng\u01b0\u1eddi d\u00f9ng n\u00ean li\u00ean h\u1ec7 b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt. Vi\u1ec7c t\u1ef1 th\u00e1o \u0111\u1ea7u n\u1ed1i quang, c\u1eaft n\u1ed1i d\u00e2y ho\u1eb7c reset modem khi ch\u01b0a c\u00f3 th\u00f4ng tin c\u1ea5u h\u00ecnh c\u00f3 th\u1ec3 khi\u1ebfn s\u1ef1 c\u1ed1 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p nh\u1eefng l\u1ed7i Internet Viettel th\u01b0\u1eddng g\u1eb7p, c\u00e1ch nh\u1eadn bi\u1ebft nguy\u00ean nh\u00e2n, quy tr\u00ecnh ki\u1ec3m tra t\u1ea1i nh\u00e0 v\u00e0 th\u1eddi \u0111i\u1ec3m c\u1ea7n y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt vi\u00ean h\u1ed7 tr\u1ee3. Ng\u01b0\u1eddi d\u00f9ng c\u0169ng c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ebfn t\u1eebng h\u01b0\u1edbng d\u1eabn chuy\u00ean s\u00e2u \u0111\u1ec3 x\u1eed l\u00fd \u0111\u00fang t\u00ecnh hu\u1ed1ng \u0111ang g\u1eb7p ph\u1ea3i.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Mu\u0323c Lu\u0323c<\/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 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Loi_Internet_Viettel_la_gi\" >L\u1ed7i Internet Viettel 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:\/\/viettelvtt.com\/loi-internet-viettel\/#Dau_hieu_nhan_biet_Internet_Viettel_dang_gap_su_co\" >D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft Internet Viettel \u0111ang g\u1eb7p s\u1ef1 c\u1ed1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Nguyen_nhan_khien_Internet_Viettel_bi_loi\" >Nguy\u00ean nh\u00e2n khi\u1ebfn Internet Viettel b\u1ecb l\u1ed7i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Quy_trinh_kiem_tra_Internet_Viettel_theo_7_buoc\" >Quy tr\u00ecnh ki\u1ec3m tra Internet Viettel theo 7 b\u01b0\u1edbc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Cach_khac_phuc_tung_loi_Internet_Viettel_thuong_gap\" >C\u00e1ch kh\u1eafc ph\u1ee5c t\u1eebng l\u1ed7i Internet Viettel th\u01b0\u1eddng g\u1eb7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Khi_nao_co_the_tu_xu_ly_va_khi_nao_can_goi_ky_thuat\" >Khi n\u00e0o c\u00f3 th\u1ec3 t\u1ef1 x\u1eed l\u00fd v\u00e0 khi n\u00e0o c\u1ea7n g\u1ecdi k\u1ef9 thu\u1eadt?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Cach_bao_hong_Internet_Viettel_nhanh_nhat\" >C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Cach_han_che_loi_Internet_Viettel_tai_dien\" >C\u00e1ch h\u1ea1n ch\u1ebf l\u1ed7i Internet Viettel t\u00e1i di\u1ec5n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Cau_hoi_thuong_gap_ve_loi_Internet_Viettel\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 l\u1ed7i Internet Viettel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Loi_Internet_Viettel_la_gi\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i Internet Viettel l\u00e0 g\u00ec?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1893\" aria-describedby=\"caption-attachment-1893\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1893 size-full\" title=\"L\u1ed7i Internet Viettel tr\u00ean modem WiFi\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-1.jpg\" alt=\"L\u1ed7i Internet Viettel tr\u00ean modem WiFi\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-1.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-1-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-1-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1893\" class=\"wp-caption-text\">L\u1ed7i Internet Viettel tr\u00ean modem WiFi<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i Internet Viettel l\u00e0 t\u00ecnh tr\u1ea1ng \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang, modem GPON, b\u1ed9 ph\u00e1t WiFi ho\u1eb7c thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 b\u00ecnh th\u01b0\u1eddng. Khi x\u1ea3y ra s\u1ef1 c\u1ed1, k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 b\u1ecb m\u1ea5t ho\u00e0n to\u00e0n, ho\u1ea1t \u0111\u1ed9ng ch\u1eadp ch\u1eddn, t\u1ed1c \u0111\u1ed9 th\u1ea5p ho\u1eb7c ch\u1ec9 kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 website v\u00e0 \u1ee9ng d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ed9t k\u1ebft n\u1ed1i Internet gia \u0111\u00ecnh th\u01b0\u1eddng \u0111i qua nhi\u1ec1u th\u00e0nh ph\u1ea7n tr\u01b0\u1edbc khi d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u01b0\u1ee3c \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh ho\u1eb7c tivi:<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u1ea1 t\u1ea7ng m\u1ea1ng Viettel \u2192 \u0110\u01b0\u1eddng c\u00e1p quang v\u00e0o nh\u00e0 \u2192 Modem GPON \u2192 WiFi ho\u1eb7c d\u00e2y LAN \u2192 Thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng \u2192 Website v\u00e0 \u1ee9ng d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 c\u1ea7n m\u1ed9t th\u00e0nh ph\u1ea7n trong chu\u1ed7i n\u00e0y g\u1eb7p v\u1ea5n \u0111\u1ec1, tr\u1ea3i nghi\u1ec7m Internet c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng. V\u00ec v\u1eady, vi\u1ec7c nh\u00ecn th\u1ea5y bi\u1ec3u t\u01b0\u1ee3ng WiFi y\u1ebfu ho\u1eb7c m\u1ed9t website t\u1ea3i ch\u1eadm ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 k\u1ebft lu\u1eadn \u0111\u01b0\u1eddng truy\u1ec1n Viettel \u0111ang b\u1ecb l\u1ed7i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">V\u00ed d\u1ee5, \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 v\u1eabn hi\u1ec3n th\u1ecb k\u1ebft n\u1ed1i WiFi nh\u01b0ng modem \u0111\u00e3 m\u1ea5t t\u00edn hi\u1ec7u Internet. M\u00e1y t\u00ednh c\u00f3 th\u1ec3 v\u00e0o m\u1ea1ng b\u00ecnh th\u01b0\u1eddng trong khi m\u1ed9t \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c do l\u1ed7i \u0111\u1ecba ch\u1ec9 IP. T\u01b0\u01a1ng t\u1ef1, \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u01b0ng WiFi y\u1ebfu v\u00ec modem \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1ee7 ho\u1eb7c c\u00e1ch ng\u01b0\u1eddi d\u00f9ng qu\u00e1 xa.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ph\u00e2n bi\u1ec7t l\u1ed7i Internet v\u00e0 l\u1ed7i WiFi Viettel<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i WiFi v\u00e0 l\u1ed7i Internet th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u00e0 m\u1ed9t, nh\u01b0ng \u0111\u00e2y l\u00e0 hai v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i WiFi x\u1ea3y ra khi thi\u1ebft b\u1ecb kh\u00f4ng nh\u00ecn th\u1ea5y t\u00ean m\u1ea1ng, kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi modem ho\u1eb7c t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y qu\u00e1 y\u1ebfu. Nguy\u00ean nh\u00e2n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn b\u1ed9 ph\u00e1t WiFi, kho\u1ea3ng c\u00e1ch, v\u1eadt c\u1ea3n, nhi\u1ec5u s\u00f3ng ho\u1eb7c thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i Internet x\u1ea3y ra khi thi\u1ebft b\u1ecb \u0111\u00e3 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi WiFi ho\u1eb7c d\u00e2y LAN nh\u01b0ng kh\u00f4ng th\u1ec3 truy c\u1eadp website, \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, bi\u1ec3u t\u01b0\u1ee3ng WiFi v\u1eabn c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb \u0111\u1ea7y \u0111\u1ee7 nh\u01b0ng thi\u1ebft b\u1ecb b\u00e1o \u201cKh\u00f4ng c\u00f3 Internet\u201d ho\u1eb7c \u201cConnected without Internet\u201d.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch ph\u00e2n bi\u1ec7t nhanh nh\u1ea5t l\u00e0 th\u1eed truy c\u1eadp b\u1eb1ng nhi\u1ec1u thi\u1ebft b\u1ecb. N\u1ebfu to\u00e0n b\u1ed9 \u0111i\u1ec7n tho\u1ea1i v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec1u m\u1ea5t m\u1ea1ng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf modem ho\u1eb7c \u0111\u01b0\u1eddng truy\u1ec1n. N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb g\u1eb7p l\u1ed7i, c\u1ea7n \u01b0u ti\u00ean ki\u1ec3m tra ch\u00ednh thi\u1ebft b\u1ecb \u0111\u00f3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1eefng nh\u00f3m s\u1ef1 c\u1ed1 Internet Viettel th\u01b0\u1eddng g\u1eb7p<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1c s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed1n nh\u00f3m ch\u00ednh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00f3m th\u1ee9 nh\u1ea5t l\u00e0 l\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang, th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn d\u00e2y quang b\u1ecb \u0111\u1ee9t, g\u1eadp, suy hao ho\u1eb7c \u0111\u1ea7u n\u1ed1i g\u1eb7p v\u1ea5n \u0111\u1ec1. D\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn l\u00e0 modem b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf v\u00e0 \u0111\u00e8n PON kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00f3m th\u1ee9 hai l\u00e0 l\u1ed7i modem ho\u1eb7c router WiFi. Modem c\u00f3 th\u1ec3 qu\u00e1 n\u00f3ng, l\u1ed7i ngu\u1ed3n, ho\u1ea1t \u0111\u1ed9ng qu\u00e1 l\u00e2u, treo b\u1ed9 nh\u1edb ho\u1eb7c h\u1ecfng c\u1ed5ng LAN. Khi \u0111\u00f3, m\u1ea1ng th\u01b0\u1eddng ch\u1eadp ch\u1eddn, thi\u1ebft b\u1ecb t\u1ef1 kh\u1edfi \u0111\u1ed9ng ho\u1eb7c t\u00ean WiFi bi\u1ebfn m\u1ea5t.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00f3m th\u1ee9 ba l\u00e0 l\u1ed7i v\u00f9ng ph\u1ee7 s\u00f3ng. \u0110\u01b0\u1eddng truy\u1ec1n v\u1eabn \u1ed5n \u0111\u1ecbnh nh\u01b0ng t\u00edn hi\u1ec7u WiFi kh\u00f4ng ph\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1ebfn ph\u00f2ng xa, t\u1ea7ng tr\u00ean ho\u1eb7c v\u1ecb tr\u00ed c\u00f3 nhi\u1ec1u t\u01b0\u1eddng b\u00ea t\u00f4ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00f3m cu\u1ed1i c\u00f9ng l\u00e0 l\u1ed7i tr\u00ean \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh, tivi ho\u1eb7c \u1ee9ng d\u1ee5ng. \u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng trong khi c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c v\u1eabn s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dau_hieu_nhan_biet_Internet_Viettel_dang_gap_su_co\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft Internet Viettel \u0111ang g\u1eb7p s\u1ef1 c\u1ed1<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1894\" aria-describedby=\"caption-attachment-1894\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1894 size-full\" title=\"D\u1ea5u hi\u1ec7u Internet Viettel g\u1eb7p s\u1ef1 c\u1ed1\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-2.jpg\" alt=\"D\u1ea5u hi\u1ec7u Internet Viettel g\u1eb7p s\u1ef1 c\u1ed1\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-2.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-2-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-2-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1894\" class=\"wp-caption-text\">D\u1ea5u hi\u1ec7u Internet Viettel g\u1eb7p s\u1ef1 c\u1ed1<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ed7i l\u1ed7i Internet Viettel th\u01b0\u1eddng c\u00f3 m\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u \u0111\u1eb7c tr\u01b0ng. Vi\u1ec7c quan s\u00e1t \u0111\u00fang hi\u1ec7n t\u01b0\u1ee3ng gi\u00fap ng\u01b0\u1eddi d\u00f9ng khoanh v\u00f9ng nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c.<\/span><\/p>\n<table dir=\"ltr\" style=\"width: 53.0791%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"283\" \/>\n<col width=\"286\" \/>\n<col width=\"304\" \/><\/colgroup>\n<tbody>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">Hi\u1ec7n t\u01b0\u1ee3ng<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 x\u1ea3y ra<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">H\u01b0\u1edbng ki\u1ec3m tra<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n LOS \u0111\u1ecf ho\u1eb7c nh\u1ea5p nh\u00e1y<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea5t t\u00edn hi\u1ec7u quang, \u0111\u1ee9t d\u00e2y, suy hao quang<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra d\u00e2y b\u1eb1ng m\u1eaft th\u01b0\u1eddng v\u00e0 b\u00e1o k\u1ef9 thu\u1eadt<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n PON kh\u00f4ng s\u00e1ng<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u GPON<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra c\u00f9ng \u0111\u00e8n LOS<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o m\u1ea1ng<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem m\u1ea5t Internet, l\u1ed7i IP, DNS ho\u1eb7c thi\u1ebft b\u1ecb<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Th\u1eed b\u1eb1ng nhi\u1ec1u \u0111i\u1ec7n tho\u1ea1i v\u00e0 m\u00e1y t\u00ednh<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">To\u00e0n b\u1ed9 thi\u1ebft b\u1ecb m\u1ea5t m\u1ea1ng<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n, modem ho\u1eb7c h\u1ea1 t\u1ea7ng khu v\u1ef1c<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra \u0111\u00e8n modem v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i m\u1ea5t m\u1ea1ng<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i c\u1ea5u h\u00ecnh tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Qu\u00ean m\u1ea1ng v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">WiFi y\u1ebfu \u1edf ph\u00f2ng xa<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">V\u00f9ng ph\u1ee7 k\u00e9m ho\u1eb7c c\u00f3 nhi\u1ec1u v\u1eadt c\u1ea3n<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ee9ng g\u1ea7n modem \u0111\u1ec3 ki\u1ec3m tra<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea1ng ch\u1eadp ch\u1eddn<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Nhi\u1ec5u WiFi, modem n\u00f3ng ho\u1eb7c qu\u00e1 t\u1ea3i<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Th\u1eed b\u1eb1ng d\u00e2y LAN v\u00e0 gi\u1ea3m thi\u1ebft b\u1ecb<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea1ng ch\u1eadm v\u00e0o bu\u1ed5i t\u1ed1i<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Nhi\u1ec1u thi\u1ebft b\u1ecb d\u00f9ng \u0111\u1ed3ng th\u1eddi ho\u1eb7c nhi\u1ec5u s\u00f3ng<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110o t\u1ed1c \u0111\u1ed9 t\u1ea1i nhi\u1ec1u th\u1eddi \u0111i\u1ec3m<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem t\u1ef1 t\u1eaft r\u1ed3i b\u1eadt l\u1ea1i<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ngu\u1ed3n \u0111i\u1ec7n, qu\u00e1 nhi\u1ec7t ho\u1eb7c l\u1ed7i ph\u1ea7n c\u1ee9ng<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra \u1ed5 c\u1eafm v\u00e0 b\u1ed9 ngu\u1ed3n<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">D\u00f9ng WiFi \u0111\u01b0\u1ee3c nh\u01b0ng LAN kh\u00f4ng \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y LAN ho\u1eb7c c\u1ed5ng m\u1ea1ng b\u1ecb l\u1ed7i<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ed5i d\u00e2y v\u00e0 \u0111\u1ed5i c\u1ed5ng LAN<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">D\u00f9ng LAN \u0111\u01b0\u1ee3c nh\u01b0ng WiFi kh\u00f4ng \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">B\u1ed9 ph\u00e1t WiFi ho\u1eb7c c\u1ea5u h\u00ecnh kh\u00f4ng d\u00e2y l\u1ed7i<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra ch\u1ee9c n\u0103ng WLAN<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 m\u1ed9t website kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">Website, tr\u00ecnh duy\u1ec7t, DNS ho\u1eb7c m\u00e1y ch\u1ee7 l\u1ed7i<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1edf website kh\u00e1c \u0111\u1ec3 so s\u00e1nh<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea5t m\u1ea1ng sau m\u01b0a l\u1edbn<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0\u1eddng d\u00e2y ho\u1eb7c h\u1ed9p c\u00e1p b\u1ecb \u1ea3nh h\u01b0\u1edfng<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra LOS v\u00e0 b\u00e1o h\u1ecfng<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 32.3394%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ping cao khi ch\u01a1i game<\/span><\/td>\n<td style=\"width: 32.6835%;\"><span style=\"font-family: 'times new roman', times, serif;\">WiFi nhi\u1ec5u, t\u1ea3i n\u1ec1n ho\u1eb7c m\u00e1y ch\u1ee7 xa<\/span><\/td>\n<td style=\"width: 47.6615%;\"><span style=\"font-family: 'times new roman', times, serif;\">T\u1eaft t\u1ea3i xu\u1ed1ng v\u00e0 th\u1eed d\u00e2y LAN<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n LOS \u0111\u1ecf tr\u00ean modem Viettel<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">LOS l\u00e0 \u0111\u00e8n t\u00edn hi\u1ec7u li\u00ean quan \u0111\u1ebfn k\u1ebft n\u1ed1i quang. Trong tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, \u0111\u00e8n LOS th\u01b0\u1eddng t\u1eaft. Khi \u0111\u00e8n chuy\u1ec3n sang m\u00e0u \u0111\u1ecf ho\u1eb7c li\u00ean t\u1ee5c nh\u1ea5p nh\u00e1y, modem c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u quang t\u1eeb h\u1ea1 t\u1ea7ng m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Theo n\u1ed9i dung h\u1ed7 tr\u1ee3 c\u1ee7a Viettel, t\u00ecnh tr\u1ea1ng \u0111\u00e8n PON ho\u1eb7c LOS \u0111\u1ecf th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 tr\u00ean \u0111\u01b0\u1eddng d\u00e2y c\u00e1p quang t\u1ea1i \u0111\u1ecba ch\u1ec9 s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 l\u00e0 d\u00e2y quang b\u1ecb \u0111\u1ee9t, g\u1eadp qu\u00e1 m\u1ee9c, \u0111\u1ea7u n\u1ed1i b\u1ecb l\u1ecfng, suy hao t\u00edn hi\u1ec7u ho\u1eb7c h\u1ea1 t\u1ea7ng khu v\u1ef1c \u0111ang g\u1eb7p s\u1ef1 c\u1ed1. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u1ed7i c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft b\u1eb1ng vi\u1ec7c \u0111\u1ed5i m\u1eadt kh\u1ea9u WiFi ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111i\u1ec7n tho\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 n\u00ean quan s\u00e1t d\u00e2y b\u1eb1ng m\u1eaft th\u01b0\u1eddng \u0111\u1ec3 ki\u1ec3m tra xem c\u00f3 \u0111o\u1ea1n n\u00e0o b\u1ecb \u0111\u1ee9t, k\u1eb9p ho\u1eb7c k\u00e9o c\u0103ng hay kh\u00f4ng. Kh\u00f4ng n\u00ean t\u1ef1 c\u1eaft n\u1ed1i d\u00e2y, th\u00e1o \u0111\u1ea7u quang ho\u1eb7c nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea7u s\u1ee3i quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem h\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1ea1i b\u00e0i: \u0110\u00e8n LOS \u0111\u1ecf tr\u00ean modem Viettel l\u00e0 l\u1ed7i g\u00ec?.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i WiFi Viettel ph\u1ed5 bi\u1ebfn nh\u1ea5t. \u0110i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh v\u1eabn k\u1ebft n\u1ed1i v\u1edbi t\u00ean WiFi nh\u01b0ng kh\u00f4ng th\u1ec3 m\u1edf website, xem video ho\u1eb7c s\u1eed d\u1ee5ng \u1ee9ng d\u1ee5ng tr\u1ef1c tuy\u1ebfn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu l\u1ed7i x\u1ea3y ra tr\u00ean to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb, modem c\u00f3 th\u1ec3 \u0111\u00e3 m\u1ea5t k\u1ebft n\u1ed1i Internet d\u00f9 ch\u1ee9c n\u0103ng ph\u00e1t WiFi v\u1eabn ho\u1ea1t \u0111\u1ed9ng. N\u1ebfu ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i g\u1eb7p v\u1ea5n \u0111\u1ec1, nguy\u00ean nh\u00e2n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP, DNS, VPN ho\u1eb7c c\u1ea5u h\u00ecnh m\u1ea1ng tr\u00ean thi\u1ebft b\u1ecb \u0111\u00f3.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u1ea7n th\u1eed b\u1eb1ng \u00edt nh\u1ea5t hai thi\u1ebft b\u1ecb kh\u00e1c nhau tr\u01b0\u1edbc khi k\u1ebft lu\u1eadn \u0111\u01b0\u1eddng truy\u1ec1n \u0111ang c\u00f3 s\u1ef1 c\u1ed1. H\u01b0\u1edbng d\u1eabn x\u1eed l\u00fd ri\u00eang \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y t\u1ea1i b\u00e0i C\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng: Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet Viettel ch\u1eadp ch\u1eddn<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Internet ch\u1eadp ch\u1eddn l\u00e0 t\u00ecnh tr\u1ea1ng m\u1ea1ng l\u00fac ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, l\u00fac gi\u1ea3m t\u1ed1c \u0111\u1ed9 ho\u1eb7c b\u1ecb m\u1ea5t k\u1ebft n\u1ed1i trong v\u00e0i gi\u00e2y. L\u1ed7i c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n tr\u00ean to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb ho\u1eb7c ch\u1ec9 t\u1ea1i m\u1ed9t khu v\u1ef1c trong nh\u00e0.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ea1ng \u1ed5n \u0111\u1ecbnh khi d\u00f9ng d\u00e2y LAN nh\u01b0ng th\u01b0\u1eddng xuy\u00ean gi\u00e1n \u0111o\u1ea1n khi d\u00f9ng WiFi, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf v\u00f9ng ph\u1ee7 s\u00f3ng, nhi\u1ec5u k\u00eanh ho\u1eb7c v\u1ecb tr\u00ed \u0111\u1eb7t modem. N\u1ebfu c\u1ea3 WiFi v\u00e0 d\u00e2y LAN \u0111\u1ec1u m\u1ea5t k\u1ebft n\u1ed1i c\u00f9ng l\u00fac, c\u1ea7n ki\u1ec3m tra modem, ngu\u1ed3n \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 xem th\u00eam b\u00e0i Internet Viettel ch\u1eadp ch\u1eddn? 9 nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet m\u1ea5t k\u1ebft n\u1ed1i ho\u00e0n to\u00e0n<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi t\u1ea5t c\u1ea3 \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh, tivi v\u00e0 camera \u0111\u1ec1u kh\u00f4ng th\u1ec3 truy c\u1eadp Internet, s\u1ef1 c\u1ed1 th\u01b0\u1eddng n\u1eb1m \u1edf modem, c\u00e1p quang ho\u1eb7c h\u1ea1 t\u1ea7ng khu v\u1ef1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u1ea5u hi\u1ec7u c\u1ea7n ki\u1ec3m tra ngay l\u00e0 tr\u1ea1ng th\u00e1i \u0111\u00e8n Power, PON, LOS v\u00e0 Internet. N\u1ebfu Power t\u1eaft, modem c\u00f3 th\u1ec3 ch\u01b0a \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n. N\u1ebfu LOS \u0111\u1ecf v\u00e0 PON t\u1eaft, kh\u1ea3 n\u0103ng cao modem \u0111\u00e3 m\u1ea5t t\u00edn hi\u1ec7u quang. N\u1ebfu c\u00e1c \u0111\u00e8n \u0111\u1ec1u b\u00ecnh th\u01b0\u1eddng, c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem v\u00e0 th\u1eed k\u1ebft n\u1ed1i b\u1eb1ng thi\u1ebft b\u1ecb kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Quy tr\u00ecnh ki\u1ec3m tra ri\u00eang \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y t\u1ea1i b\u00e0i Internet Viettel kh\u00f4ng c\u00f3 m\u1ea1ng? Ki\u1ec3m tra theo 7 b\u01b0\u1edbc.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen_nhan_khien_Internet_Viettel_bi_loi\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">Nguy\u00ean nh\u00e2n khi\u1ebfn Internet Viettel b\u1ecb l\u1ed7i<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1896\" aria-describedby=\"caption-attachment-1896\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1896 size-full\" title=\"Nguy\u00ean nh\u00e2n Internet Viettel b\u1ecb l\u1ed7i\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-3-1.jpg\" alt=\"Nguy\u00ean nh\u00e2n Internet Viettel b\u1ecb l\u1ed7i\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-3-1.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-3-1-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-3-1-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1896\" class=\"wp-caption-text\">Nguy\u00ean nh\u00e2n Internet Viettel b\u1ecb l\u1ed7i<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i Internet Viettel kh\u00f4ng ch\u1ec9 xu\u1ea5t ph\u00e1t t\u1eeb nh\u00e0 m\u1ea1ng. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng nh\u01b0ng thi\u1ebft b\u1ecb, v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t ho\u1eb7c nhu c\u1ea7u s\u1eed d\u1ee5ng trong gia \u0111\u00ecnh khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng c\u1ea3m th\u1ea5y m\u1ea1ng ch\u1eadm v\u00e0 thi\u1ebfu \u1ed5n \u0111\u1ecbnh.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0\u1eddng c\u00e1p quang b\u1ecb \u0111\u1ee9t ho\u1eb7c suy hao<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1p quang c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng khi b\u1ecb k\u00e9o c\u0103ng, k\u1eb9p v\u00e0o c\u1eeda, g\u1eadp t\u1ea1i g\u00f3c h\u1eb9p, chu\u1ed9t c\u1eafn ho\u1eb7c va ch\u1ea1m trong qu\u00e1 tr\u00ecnh s\u1eeda ch\u1eefa nh\u00e0 c\u1eeda. Tuy\u1ebfn c\u00e1p b\u00ean ngo\u00e0i c\u0169ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi thi c\u00f4ng, c\u00e2y \u0111\u1ed5, ph\u01b0\u01a1ng ti\u1ec7n l\u1edbn ho\u1eb7c th\u1eddi ti\u1ebft x\u1ea5u.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi \u0111\u01b0\u1eddng quang b\u1ecb \u0111\u1ee9t ho\u00e0n to\u00e0n, modem th\u01b0\u1eddng b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf v\u00e0 to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb m\u1ea5t Internet. N\u1ebfu \u0111\u01b0\u1eddng d\u00e2y ch\u1ec9 b\u1ecb g\u1eadp ho\u1eb7c \u0111\u1ea7u n\u1ed1i suy hao, k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 ch\u1eadp ch\u1eddn ho\u1eb7c m\u1ea5t t\u00edn hi\u1ec7u theo t\u1eebng th\u1eddi \u0111i\u1ec3m.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng n\u00ean c\u1ed1 n\u1ed1i d\u00e2y quang b\u1eb1ng b\u0103ng d\u00ednh ho\u1eb7c d\u00e2y \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng. C\u00e1p quang c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng \u0111\u1ea7u n\u1ed1i v\u00e0 d\u1ee5ng c\u1ee5 chuy\u00ean d\u1ee5ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem ho\u1ea1t \u0111\u1ed9ng qu\u00e1 l\u00e2u<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1eadt li\u00ean t\u1ee5c \u0111\u1ec3 duy tr\u00ec Internet cho gia \u0111\u00ecnh. Sau th\u1eddi gian d\u00e0i ho\u1ea1t \u0111\u1ed9ng, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 n\u00f3ng, x\u1eed l\u00fd ch\u1eadm ho\u1eb7c g\u1eb7p l\u1ed7i t\u1ea1m th\u1eddi trong qu\u00e1 tr\u00ecnh c\u1ea5p ph\u00e1t \u0111\u1ecba ch\u1ec9 IP.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Bi\u1ec3u hi\u1ec7n th\u01b0\u1eddng g\u1eb7p l\u00e0 WiFi v\u1eabn xu\u1ea5t hi\u1ec7n nh\u01b0ng thi\u1ebft b\u1ecb kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng, t\u1ed1c \u0111\u1ed9 gi\u1ea3m, modem ph\u1ea3n h\u1ed3i ch\u1eadm ho\u1eb7c k\u1ebft n\u1ed1i ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i sau khi t\u1eaft v\u00e0 b\u1eadt ngu\u1ed3n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i ph\u00f3ng l\u1ed7i t\u1ea1m th\u1eddi, nh\u01b0ng kh\u00f4ng n\u00ean t\u1eaft b\u1eadt li\u00ean t\u1ee5c. Sau khi b\u1eadt l\u1ea1i, c\u1ea7n ch\u1edd modem ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh nh\u1eadn t\u00edn hi\u1ec7u v\u00e0 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem ho\u1eb7c b\u1ed9 ngu\u1ed3n b\u1ecb h\u1ecfng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 khi\u1ebfn modem t\u1ef1 t\u1eaft, t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i ho\u1eb7c m\u1ea5t Internet ng\u1eabu nhi\u00ean. \u1ed4 c\u1eafm l\u1ecfng, d\u00e2y ngu\u1ed3n b\u1ecb g\u00e3y ng\u1ea7m ho\u1eb7c b\u1ed9 chuy\u1ec3n ngu\u1ed3n xu\u1ed1ng c\u1ea5p \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng n\u00e0y.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu \u0111\u00e8n Power li\u00ean t\u1ee5c ch\u1edbp t\u1eaft, modem m\u1ea5t ngu\u1ed3n khi ch\u1ea1m v\u00e0o d\u00e2y ho\u1eb7c thi\u1ebft b\u1ecb c\u00f3 m\u00f9i b\u1ea5t th\u01b0\u1eddng, ng\u01b0\u1eddi d\u00f9ng n\u00ean ng\u1eaft \u0111i\u1ec7n v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ki\u1ec3m tra.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n kh\u00e1c ch\u1ec9 v\u00ec \u0111\u1ea7u c\u1eafm v\u1eeba v\u1edbi modem. \u0110i\u1ec7n \u00e1p ho\u1eb7c d\u00f2ng \u0111i\u1ec7n kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u1ecb tr\u00ed \u0111\u1eb7t modem kh\u00f4ng ph\u00f9 h\u1ee3p<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem \u0111\u1eb7t trong t\u1ee7 k\u00edn, s\u00e1t m\u1eb7t s\u00e0n, ph\u00eda sau tivi ho\u1eb7c t\u1ea1i m\u1ed9t g\u00f3c c\u1ee7a ng\u00f4i nh\u00e0 th\u01b0\u1eddng kh\u00f4ng th\u1ec3 ph\u1ee7 WiFi t\u1ed1t \u0111\u1ebfn c\u00e1c khu v\u1ef1c c\u00f2n l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u01b0\u1eddng b\u00ea t\u00f4ng, c\u1eeda kim lo\u1ea1i, g\u01b0\u01a1ng l\u1edbn, b\u1ec3 c\u00e1 v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 l\u00e0m t\u00edn hi\u1ec7u suy gi\u1ea3m. V\u00ec v\u1eady, d\u00f9 g\u00f3i c\u01b0\u1edbc c\u00f3 t\u1ed1c \u0111\u1ed9 cao, ng\u01b0\u1eddi d\u00f9ng \u1edf ph\u00f2ng xa v\u1eabn c\u00f3 th\u1ec3 g\u1eb7p t\u00ecnh tr\u1ea1ng WiFi y\u1ebfu ho\u1eb7c ch\u1eadp ch\u1eddn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">V\u1ecb tr\u00ed ph\u00f9 h\u1ee3p th\u01b0\u1eddng l\u00e0 n\u01a1i kh\u00f4 r\u00e1o, th\u00f4ng tho\u00e1ng, t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00e0 g\u1ea7n trung t\u00e2m khu v\u1ef1c s\u1eed d\u1ee5ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kho\u1ea3ng c\u00e1ch gi\u1eefa thi\u1ebft b\u1ecb v\u00e0 modem qu\u00e1 xa<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00edn hi\u1ec7u WiFi gi\u1ea3m d\u1ea7n theo kho\u1ea3ng c\u00e1ch. Khi ph\u1ea3i \u0111i qua nhi\u1ec1u t\u01b0\u1eddng ho\u1eb7c t\u1ea7ng, t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 suy gi\u1ea3m r\u00f5 r\u1ec7t.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng b\u0103ng t\u1ea7n 5 GHz, t\u1ed1c \u0111\u1ed9 \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n th\u01b0\u1eddng t\u1ed1t nh\u01b0ng kh\u1ea3 n\u0103ng xuy\u00ean v\u1eadt c\u1ea3n th\u1ea5p h\u01a1n. B\u0103ng t\u1ea7n 2,4 GHz c\u00f3 th\u1ec3 ph\u1ee7 xa h\u01a1n nh\u01b0ng d\u1ec5 b\u1ecb nhi\u1ec5u trong khu v\u1ef1c c\u00f3 nhi\u1ec1u m\u1ea1ng WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch ki\u1ec3m tra \u0111\u01a1n gi\u1ea3n l\u00e0 mang \u0111i\u1ec7n tho\u1ea1i \u0111\u1ebfn g\u1ea7n modem. N\u1ebfu m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t tr\u1edf l\u1ea1i, nguy\u00ean nh\u00e2n ch\u1ee7 y\u1ebfu n\u1eb1m \u1edf v\u00f9ng ph\u1ee7 ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 qu\u00e1 nhi\u1ec1u thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng c\u00f9ng l\u00fac<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ed9t gia \u0111\u00ecnh c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh, tivi, camera, m\u00e1y ch\u01a1i game, loa th\u00f4ng minh v\u00e0 nhi\u1ec1u thi\u1ebft b\u1ecb gia d\u1ee5ng v\u00e0o c\u00f9ng m\u1ed9t m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi c\u00f3 thi\u1ebft b\u1ecb \u0111ang t\u1ea3i tr\u00f2 ch\u01a1i, sao l\u01b0u d\u1eef li\u1ec7u, c\u1eadp nh\u1eadt h\u1ec7 \u0111i\u1ec1u h\u00e0nh ho\u1eb7c xem video ch\u1ea5t l\u01b0\u1ee3ng cao, b\u0103ng th\u00f4ng d\u00e0nh cho c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c s\u1ebd gi\u1ea3m. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 c\u1ea3m th\u1ea5y m\u1ea1ng ch\u1eadm, ping cao ho\u1eb7c video th\u01b0\u1eddng xuy\u00ean b\u1ecb d\u1eebng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u01b0\u1edbc khi b\u00e1o l\u1ed7i, n\u00ean t\u1ea1m d\u1eebng c\u00e1c t\u00e1c v\u1ee5 t\u1ea3i d\u1eef li\u1ec7u v\u00e0 ng\u1eaft nh\u1eefng thi\u1ebft b\u1ecb kh\u00f4ng c\u1ea7n thi\u1ebft \u0111\u1ec3 ki\u1ec3m tra l\u1ea1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">S\u00f3ng WiFi b\u1ecb nhi\u1ec5u<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u1ea1i chung c\u01b0 ho\u1eb7c khu d\u00e2n c\u01b0 \u0111\u00f4ng \u0111\u00fac, nhi\u1ec1u modem c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00f9ng m\u1ed9t k\u00eanh WiFi. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y b\u1ecb nhi\u1ec5u, \u0111\u1eb7c bi\u1ec7t tr\u00ean b\u0103ng t\u1ea7n 2,4 GHz.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn l\u00e0 m\u1ea1ng ch\u1eadm v\u00e0o th\u1eddi \u0111i\u1ec3m nhi\u1ec1u ng\u01b0\u1eddi \u1edf nh\u00e0, WiFi kh\u00f4ng \u1ed5n \u0111\u1ecbnh d\u00f9 \u0111\u1ee9ng g\u1ea7n modem ho\u1eb7c t\u1ed1c \u0111\u1ed9 \u0111o qua d\u00e2y LAN cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Vi\u1ec7c thay \u0111\u1ed5i k\u00eanh WiFi c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ecnh tr\u1ea1ng nhi\u1ec5u, nh\u01b0ng ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u00f3 kinh nghi\u1ec7m c\u1ea5u h\u00ecnh n\u00ean tr\u00e1nh thay \u0111\u1ed5i h\u00e0ng lo\u1ea1t th\u00f4ng s\u1ed1 n\u00e2ng cao.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y LAN ho\u1eb7c c\u1ed5ng m\u1ea1ng b\u1ecb l\u1ed7i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u00e1y t\u00ednh k\u1ebft n\u1ed1i b\u1eb1ng d\u00e2y kh\u00f4ng c\u00f3 m\u1ea1ng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf d\u00e2y LAN ho\u1eb7c c\u1ed5ng m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y b\u1ecb g\u00e3y ng\u1ea7m, \u0111\u1ea7u c\u1eafm l\u1ecfng, l\u1eaby nh\u1ef1a b\u1ecb g\u00e3y ho\u1eb7c c\u1ed5ng LAN tr\u00ean modem kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec1u c\u00f3 th\u1ec3 l\u00e0m k\u1ebft n\u1ed1i b\u1ecb gi\u00e1n \u0111o\u1ea1n. Khi \u0111\u00f3, WiFi tr\u00ean \u0111i\u1ec7n tho\u1ea1i v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3 \u0111\u1ed5i sang c\u1ed5ng LAN kh\u00e1c ho\u1eb7c th\u1eed m\u1ed9t d\u00e2y m\u1ea1ng kh\u00e1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh g\u1eb7p l\u1ed7i c\u1ea5u h\u00ecnh<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 l\u01b0u sai m\u1eadt kh\u1ea9u, nh\u1eadn \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng ch\u00ednh x\u00e1c, s\u1eed d\u1ee5ng DNS th\u1ee7 c\u00f4ng ho\u1eb7c \u0111ang b\u1eadt VPN v\u00e0 proxy.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb m\u1ea5t m\u1ea1ng, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra c\u1ea5u h\u00ecnh c\u1ee7a thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi thay \u0111\u1ed5i modem. Vi\u1ec7c qu\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i l\u1ea1i v\u00e0 \u0111\u01b0a DNS v\u1ec1 ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng th\u01b0\u1eddng c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c l\u1ed7i \u0111\u01a1n gi\u1ea3n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Website ho\u1eb7c \u1ee9ng d\u1ee5ng \u0111ang g\u1eb7p s\u1ef1 c\u1ed1<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ed9t website kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c ch\u01b0a ch\u1eafc \u0111\u1ed3ng ngh\u0129a Internet Viettel b\u1ecb l\u1ed7i. M\u00e1y ch\u1ee7 c\u1ee7a website c\u00f3 th\u1ec3 \u0111ang b\u1ea3o tr\u00ec, qu\u00e1 t\u1ea3i ho\u1eb7c g\u1eb7p v\u1ea5n \u0111\u1ec1 \u0111\u1ecbnh tuy\u1ebfn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng n\u00ean m\u1edf th\u00eam m\u1ed9t s\u1ed1 website ph\u1ed5 bi\u1ebfn ho\u1eb7c th\u1eed b\u1eb1ng tr\u00ecnh duy\u1ec7t kh\u00e1c. N\u1ebfu c\u00e1c d\u1ecbch v\u1ee5 c\u00f2n l\u1ea1i v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf website ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea5t m\u1ea1ng sau m\u01b0a l\u1edbn<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u01b0a l\u1edbn c\u00f3 th\u1ec3 \u0111i k\u00e8m c\u00e2y \u0111\u1ed5, m\u1ea5t \u0111i\u1ec7n, d\u00e2y b\u1ecb k\u00e9o ho\u1eb7c h\u1ed9p c\u00e1p ngo\u00e0i tr\u1eddi b\u1ecb \u1ea3nh h\u01b0\u1edfng. V\u00ec v\u1eady, ng\u01b0\u1eddi d\u00f9ng \u0111\u00f4i khi g\u1eb7p t\u00ecnh tr\u1ea1ng Internet m\u1ea5t ngay sau khi th\u1eddi ti\u1ebft x\u1ea5u.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu modem b\u00e1o LOS \u0111\u1ecf sau m\u01b0a l\u1edbn, kh\u00f4ng n\u00ean t\u1ef1 leo l\u00ean m\u00e1i nh\u00e0 ho\u1eb7c c\u1ed9t \u0111i\u1ec7n \u0111\u1ec3 ki\u1ec3m tra. H\u00e3y quan s\u00e1t t\u1eeb v\u1ecb tr\u00ed an to\u00e0n v\u00e0 g\u1eedi y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem th\u00eam b\u00e0i Internet Viettel b\u1ecb m\u1ea5t sau m\u01b0a l\u1edbn: Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch x\u1eed l\u00fd.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">H\u1ea1 t\u1ea7ng Viettel \u0111ang b\u1ea3o tr\u00ec ho\u1eb7c g\u1eb7p s\u1ef1 c\u1ed1<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu nhi\u1ec1u h\u1ed9 gia \u0111\u00ecnh g\u1ea7n nhau c\u00f9ng m\u1ea5t m\u1ea1ng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf h\u1ea1 t\u1ea7ng khu v\u1ef1c thay v\u00ec thi\u1ebft b\u1ecb ri\u00eang c\u1ee7a m\u1ed9t kh\u00e1ch h\u00e0ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong t\u00ecnh hu\u1ed1ng n\u00e0y, kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem nhi\u1ec1u l\u1ea7n th\u01b0\u1eddng kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1. Ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra th\u00f4ng b\u00e1o tr\u00ean My Viettel ho\u1eb7c li\u00ean h\u1ec7 t\u1ed5ng \u0111\u00e0i \u0111\u1ec3 x\u00e1c nh\u1eadn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 c\u00f3 t\u1ea1i b\u00e0i C\u00e1ch ki\u1ec3m tra Internet Viettel c\u00f3 \u0111ang b\u1ea3o tr\u00ec hay kh\u00f4ng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Quy_trinh_kiem_tra_Internet_Viettel_theo_7_buoc\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">Quy tr\u00ecnh ki\u1ec3m tra Internet Viettel theo 7 b\u01b0\u1edbc<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1897\" aria-describedby=\"caption-attachment-1897\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1897 size-full\" title=\"Quy tr\u00ecnh ki\u1ec3m tra Internet Viettel 7 b\u01b0\u1edbc\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-4.jpg\" alt=\"Quy tr\u00ecnh ki\u1ec3m tra Internet Viettel 7 b\u01b0\u1edbc\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-4.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-4-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-4-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1897\" class=\"wp-caption-text\">Quy tr\u00ecnh ki\u1ec3m tra Internet Viettel 7 b\u01b0\u1edbc<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi Internet Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra t\u1eeb thao t\u00e1c \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn chuy\u00ean s\u00e2u. Quy tr\u00ecnh d\u01b0\u1edbi \u0111\u00e2y gi\u00fap x\u00e1c \u0111\u1ecbnh l\u1ed7i n\u1eb1m \u1edf thi\u1ebft b\u1ecb, WiFi, modem hay \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 1: Ki\u1ec3m tra l\u1ed7i x\u1ea3y ra tr\u00ean bao nhi\u00eau thi\u1ebft b\u1ecb<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y th\u1eed m\u1edf Internet tr\u00ean m\u1ed9t \u0111i\u1ec7n tho\u1ea1i kh\u00e1c, m\u00e1y t\u00ednh ho\u1eb7c tivi \u0111ang k\u1ebft n\u1ed1i c\u00f9ng m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb g\u1eb7p l\u1ed7i, nguy\u00ean nh\u00e2n th\u01b0\u1eddng n\u1eb1m \u1edf thi\u1ebft b\u1ecb \u0111\u00f3. N\u1ebfu to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb c\u00f9ng m\u1ea5t m\u1ea1ng, c\u1ea7n chuy\u1ec3n sang ki\u1ec3m tra modem v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e2y l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng gi\u00fap tr\u00e1nh vi\u1ec7c reset modem kh\u00f4ng c\u1ea7n thi\u1ebft ch\u1ec9 v\u00ec m\u1ed9t \u0111i\u1ec7n tho\u1ea1i g\u1eb7p l\u1ed7i c\u1ea5u h\u00ecnh.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 2: Quan s\u00e1t c\u00e1c \u0111\u00e8n tr\u00ean modem<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c \u0111\u00e8n Power, PON, LOS, Internet, WiFi v\u00e0 LAN.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n Power ph\u1ea3i s\u00e1ng \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 x\u00e1c nh\u1eadn modem \u0111ang \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n. \u0110\u00e8n PON th\u01b0\u1eddng s\u00e1ng khi modem nh\u1eadn t\u00edn hi\u1ec7u quang. \u0110\u00e8n LOS th\u00f4ng th\u01b0\u1eddng ph\u1ea3i t\u1eaft. N\u1ebfu LOS \u0111\u1ecf ho\u1eb7c nh\u1ea5p nh\u00e1y, c\u1ea7n nghi ng\u1edd l\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n WiFi cho bi\u1ebft ch\u1ee9c n\u0103ng ph\u00e1t kh\u00f4ng d\u00e2y \u0111ang ho\u1ea1t \u0111\u1ed9ng. \u0110\u00e8n LAN th\u01b0\u1eddng s\u00e1ng ho\u1eb7c nh\u1ea5p nh\u00e1y khi c\u00f3 thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i b\u1eb1ng d\u00e2y.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00ean g\u1ecdi v\u00e0 c\u00e1ch hi\u1ec3n th\u1ecb c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y m\u1eabu modem, nh\u01b0ng PON v\u00e0 LOS l\u00e0 hai \u0111\u00e8n quan tr\u1ecdng nh\u1ea5t khi ki\u1ec3m tra t\u00edn hi\u1ec7u c\u00e1p quang.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 3: Ki\u1ec3m tra ngu\u1ed3n \u0111i\u1ec7n v\u00e0 d\u00e2y k\u1ebft n\u1ed1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y ch\u1eafc ch\u1eafn b\u1ed9 ngu\u1ed3n \u0111\u01b0\u1ee3c c\u1eafm ch\u1eb7t, \u1ed5 \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng v\u00e0 d\u00e2y kh\u00f4ng b\u1ecb l\u1ecfng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y LAN c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c r\u00fat ra r\u1ed3i c\u1eafm l\u1ea1i. \u0110\u1ed1i v\u1edbi d\u00e2y c\u00e1p quang, ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 n\u00ean ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng xem d\u00e2y c\u00f3 b\u1ecb \u0111\u1ee9t, k\u1eb9p ho\u1eb7c g\u1eadp hay kh\u00f4ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean t\u1ef1 th\u00e1o \u0111\u1ea7u quang n\u1ebfu ch\u01b0a \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn. B\u1ee5i b\u1ea9n ho\u1eb7c thao t\u00e1c sai t\u1ea1i \u0111\u1ea7u n\u1ed1i c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m t\u00edn hi\u1ec7u.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 4: Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem \u0111\u00fang c\u00e1ch<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1ea5n n\u00fat ngu\u1ed3n \u0111\u1ec3 t\u1eaft modem, ch\u1edd kho\u1ea3ng hai \u0111\u1ebfn ba ph\u00fat r\u1ed3i b\u1eadt l\u1ea1i. Sau \u0111\u00f3 c\u1ea7n ch\u1edd c\u00e1c \u0111\u00e8n t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc khi ki\u1ec3m tra Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean r\u00fat v\u00e0 c\u1eafm ngu\u1ed3n li\u00ean t\u1ee5c. Modem c\u1ea7n th\u1eddi gian \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng, nh\u1eadn t\u00edn hi\u1ec7u GPON v\u00e0 thi\u1ebft l\u1eadp phi\u00ean k\u1ebft n\u1ed1i Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1eb7c bi\u1ec7t, kh\u00f4ng nh\u1ea5n n\u00fat Reset. Reset kh\u00f4ng gi\u1ed1ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i. Thao t\u00e1c n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0a thi\u1ebft b\u1ecb v\u1ec1 tr\u1ea1ng th\u00e1i m\u1eb7c \u0111\u1ecbnh v\u00e0 x\u00f3a c\u1ea5u h\u00ecnh Internet, t\u00ean WiFi ho\u1eb7c m\u1eadt kh\u1ea9u \u0111ang s\u1eed d\u1ee5ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 5: X\u1eed l\u00fd tr\u00ean \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu c\u00e1c \u0111\u00e8n modem b\u00ecnh th\u01b0\u1eddng nh\u01b0ng m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng, h\u00e3y t\u1eaft r\u1ed3i b\u1eadt WiFi, ch\u1ecdn qu\u00ean m\u1ea1ng v\u00e0 nh\u1eadp l\u1ea1i m\u1eadt kh\u1ea9u.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u0169ng n\u00ean t\u1eaft VPN, proxy ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3o m\u1eadt c\u00f3 kh\u1ea3 n\u0103ng can thi\u1ec7p k\u1ebft n\u1ed1i. IP v\u00e0 DNS n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng n\u1ebfu tr\u01b0\u1edbc \u0111\u00f3 \u0111\u00e3 c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u00ean m\u00e1y t\u00ednh, c\u1ea7n ki\u1ec3m tra th\u00eam driver card m\u1ea1ng, ch\u1ebf \u0111\u1ed9 m\u00e1y bay v\u00e0 d\u00e2y LAN. Tr\u00ean \u0111i\u1ec7n tho\u1ea1i, c\u00f3 th\u1ec3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i ho\u1eb7c \u0111\u1eb7t l\u1ea1i c\u00e0i \u0111\u1eb7t m\u1ea1ng n\u1ebfu nh\u1eefng thao t\u00e1c c\u01a1 b\u1ea3n kh\u00f4ng hi\u1ec7u qu\u1ea3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 6: Ki\u1ec3m tra v\u00f9ng ph\u1ee7 v\u00e0 s\u1ed1 thi\u1ebft b\u1ecb \u0111ang s\u1eed d\u1ee5ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Mang \u0111i\u1ec7n tho\u1ea1i \u0111\u1ebfn g\u1ea7n modem v\u00e0 th\u1eed l\u1ea1i. \u0110\u1ed3ng th\u1eddi t\u1ea1m d\u1eebng c\u00e1c thi\u1ebft b\u1ecb \u0111ang t\u1ea3i t\u1ec7p, xem video ch\u1ea5t l\u01b0\u1ee3ng cao ho\u1eb7c sao l\u01b0u d\u1eef li\u1ec7u.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ea1ng nhanh khi \u0111\u1ee9ng g\u1ea7n modem nh\u01b0ng y\u1ebfu t\u1ea1i ph\u00f2ng xa, \u0111\u01b0\u1eddng truy\u1ec1n c\u00f3 th\u1ec3 v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. V\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf v\u00f9ng ph\u1ee7 WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong nh\u00e0 nhi\u1ec1u t\u1ea7ng ho\u1eb7c di\u1ec7n t\u00edch l\u1edbn, c\u00f3 th\u1ec3 c\u1ea7n b\u1ed1 tr\u00ed l\u1ea1i modem ho\u1eb7c b\u1ed5 sung h\u1ec7 th\u1ed1ng Mesh WiFi.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 7: \u0110o t\u1ed1c \u0111\u1ed9 v\u00e0 b\u00e1o h\u1ed7 tr\u1ee3 n\u1ebfu c\u1ea7n<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi Internet \u0111\u00e3 truy c\u1eadp \u0111\u01b0\u1ee3c nh\u01b0ng t\u1ed1c \u0111\u1ed9 th\u1ea5p, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111o b\u1eb1ng Speedtest trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n ch\u1ebf t\u1ed1i \u0111a t\u00e1c \u0111\u1ed9ng t\u1eeb WiFi v\u00e0 thi\u1ebft b\u1ecb kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u00ean \u0111o khi ch\u1ec9 c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng, t\u1eaft VPN, d\u1eebng t\u1ea3i d\u1eef li\u1ec7u v\u00e0 \u0111\u1ee9ng g\u1ea7n modem. N\u1ebfu c\u00f3 th\u1ec3, h\u00e3y k\u1ebft n\u1ed1i m\u00e1y t\u00ednh b\u1eb1ng d\u00e2y LAN \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1eddng truy\u1ec1n kh\u00e1ch quan h\u01a1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean k\u1ebft lu\u1eadn m\u1ea1ng l\u1ed7i ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t l\u1ea7n \u0111o. H\u00e3y th\u1eed nhi\u1ec1u l\u1ea7n, t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau v\u00e0 ghi l\u1ea1i k\u1ebft qu\u1ea3 download, upload c\u00f9ng ping.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u1ee7 b\u1ea3y b\u01b0\u1edbc nh\u01b0ng to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb v\u1eabn kh\u00f4ng v\u00e0o m\u1ea1ng, ng\u01b0\u1eddi d\u00f9ng n\u00ean g\u1eedi y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_khac_phuc_tung_loi_Internet_Viettel_thuong_gap\"><\/span><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch kh\u1eafc ph\u1ee5c t\u1eebng l\u1ed7i Internet Viettel th\u01b0\u1eddng g\u1eb7p<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Sau khi x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nh\u00f3m nguy\u00ean nh\u00e2n, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1ch x\u1eed l\u00fd ph\u00f9 h\u1ee3p. Kh\u00f4ng n\u00ean thay \u0111\u1ed5i to\u00e0n b\u1ed9 c\u1ea5u h\u00ecnh modem khi ch\u01b0a bi\u1ebft s\u1ef1 c\u1ed1 n\u1eb1m \u1edf \u0111\u00e2u.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c Internet Viettel m\u1ea5t m\u1ea1ng ho\u00e0n to\u00e0n<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ea7u ti\u00ean, ki\u1ec3m tra modem c\u00f3 ngu\u1ed3n \u0111i\u1ec7n hay kh\u00f4ng. Sau \u0111\u00f3 quan s\u00e1t PON v\u00e0 LOS.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu LOS \u0111\u1ecf, n\u00ean gi\u1eef nguy\u00ean \u0111\u1ea7u n\u1ed1i v\u00e0 b\u00e1o k\u1ef9 thu\u1eadt. N\u1ebfu \u0111\u00e8n quang b\u00ecnh th\u01b0\u1eddng, h\u00e3y kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem, ch\u1edd t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh r\u1ed3i th\u1eed tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong tr\u01b0\u1eddng h\u1ee3p WiFi kh\u00f4ng d\u00f9ng \u0111\u01b0\u1ee3c nh\u01b0ng m\u00e1y t\u00ednh k\u1ebft n\u1ed1i d\u00e2y LAN v\u1eabn truy c\u1eadp Internet, v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 n\u1eb1m \u1edf ch\u1ee9c n\u0103ng ph\u00e1t WiFi. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu c\u1ea3 LAN v\u00e0 WiFi \u0111\u1ec1u m\u1ea5t m\u1ea1ng, c\u1ea7n ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c c\u1ea5u h\u00ecnh Internet.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y th\u1eed tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c. N\u1ebfu to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb c\u00f9ng b\u00e1o kh\u00f4ng c\u00f3 Internet, ki\u1ec3m tra \u0111\u00e8n PON, LOS v\u00e0 Internet tr\u00ean modem r\u1ed3i kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft b\u1ecb.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i g\u1eb7p l\u1ed7i, ch\u1ecdn qu\u00ean m\u1ea1ng WiFi, nh\u1eadp l\u1ea1i m\u1eadt kh\u1ea9u v\u00e0 t\u1eaft VPN. Sau \u0111\u00f3 ki\u1ec3m tra IP c\u00f9ng DNS.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ed9t s\u1ed1 website ho\u1ea1t \u0111\u1ed9ng nh\u01b0ng m\u1ed9t website c\u1ee5 th\u1ec3 kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c, h\u00e3y \u0111\u1ed5i tr\u00ecnh duy\u1ec7t ho\u1eb7c ch\u1edd d\u1ecbch v\u1ee5 \u0111\u00f3 kh\u00f4i ph\u1ee5c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c modem Viettel b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi LOS \u0111\u1ecf, ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng n\u00ean ti\u1ebfp t\u1ee5c reset ho\u1eb7c kh\u1edfi \u0111\u1ed9ng modem nhi\u1ec1u l\u1ea7n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y ki\u1ec3m tra d\u00e2y c\u00f3 b\u1ecb k\u1eb9p d\u01b0\u1edbi ch\u00e2n b\u00e0n, m\u1eafc v\u00e0o c\u1eeda ho\u1eb7c b\u1ecb k\u00e9o c\u0103ng kh\u00f4ng. N\u1ebfu nh\u00ecn th\u1ea5y d\u00e2y b\u1ecb \u0111\u1ee9t, c\u1ea7n gi\u1eef nguy\u00ean hi\u1ec7n tr\u1ea1ng \u0111\u1ec3 k\u1ef9 thu\u1eadt vi\u00ean x\u1eed l\u00fd.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng t\u1ef1 c\u1eaft n\u1ed1i d\u00e2y, d\u00f9ng b\u0103ng d\u00ednh ho\u1eb7c th\u00e1o \u0111\u1ea7u connector. Nh\u1eefng thao t\u00e1c n\u00e0y kh\u00f4ng kh\u00f4i ph\u1ee5c \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u quang v\u00e0 c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng th\u00eam linh ki\u1ec7n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c WiFi Viettel ch\u1eadp ch\u1eddn<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1eb7t modem t\u1ea1i n\u01a1i th\u00f4ng tho\u00e1ng, tr\u00e1nh t\u1ee7 k\u00edn v\u00e0 thi\u1ebft b\u1ecb t\u1ecfa nhi\u1ec7t. Sau \u0111\u00f3 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u00e0 th\u1eed l\u1ea1i \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ea1ng qua d\u00e2y LAN \u1ed5n \u0111\u1ecbnh nh\u01b0ng WiFi v\u1eabn ch\u1eadp ch\u1eddn, c\u1ea7n t\u1eadp trung v\u00e0o v\u1ecb tr\u00ed modem, v\u1eadt c\u1ea3n v\u00e0 nhi\u1ec5u s\u00f3ng. N\u1ebfu c\u1ea3 d\u00e2y LAN c\u0169ng m\u1ea5t k\u1ebft n\u1ed1i, ki\u1ec3m tra modem v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u0169ng n\u00ean theo d\u00f5i xem modem c\u00f3 qu\u00e1 n\u00f3ng ho\u1eb7c t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i hay kh\u00f4ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c Internet Viettel ch\u1eadm<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u01b0\u1edbc ti\u00ean, t\u1ea1m d\u1eebng t\u1ea3i t\u1ec7p, c\u1eadp nh\u1eadt h\u1ec7 \u0111i\u1ec1u h\u00e0nh, sao l\u01b0u \u0111\u00e1m m\u00e2y v\u00e0 video \u0111ang ph\u00e1t tr\u00ean thi\u1ebft b\u1ecb kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Sau \u0111\u00f3 \u0111o t\u1ed1c \u0111\u1ed9 \u1edf g\u1ea7n modem. N\u1ebfu k\u1ebft qu\u1ea3 qua WiFi th\u1ea5p nh\u01b0ng k\u1ebft n\u1ed1i b\u1eb1ng d\u00e2y LAN t\u1ed1t, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 l\u00e0 v\u00f9ng ph\u1ee7 ho\u1eb7c gi\u1edbi h\u1ea1n c\u1ee7a thi\u1ebft b\u1ecb.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu t\u1ed1c \u0111\u1ed9 qua d\u00e2y LAN li\u00ean t\u1ee5c th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 trong nhi\u1ec1u th\u1eddi \u0111i\u1ec3m, n\u00ean ghi l\u1ea1i k\u1ebft qu\u1ea3 v\u00e0 li\u00ean h\u1ec7 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c m\u1ea1ng ch\u1eadm v\u00e0o bu\u1ed5i t\u1ed1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Bu\u1ed5i t\u1ed1i th\u01b0\u1eddng l\u00e0 th\u1eddi \u0111i\u1ec3m nhi\u1ec1u th\u00e0nh vi\u00ean trong gia \u0111\u00ecnh c\u00f9ng xem video, ch\u01a1i game, s\u1eed d\u1ee5ng m\u1ea1ng x\u00e3 h\u1ed9i v\u00e0 t\u1ea3i d\u1eef li\u1ec7u. \u0110\u00e2y c\u0169ng l\u00e0 th\u1eddi \u0111i\u1ec3m c\u00f3 nhi\u1ec1u m\u1ea1ng WiFi xung quanh ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra thi\u1ebft b\u1ecb n\u00e0o \u0111ang d\u00f9ng nhi\u1ec1u b\u0103ng th\u00f4ng, th\u1eed b\u1eb1ng d\u00e2y LAN v\u00e0 \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0o c\u1ea3 ban ng\u00e0y l\u1eabn bu\u1ed5i t\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ea1ng ch\u1ec9 ch\u1eadm tr\u00ean m\u1ed9t website ho\u1eb7c m\u00e1y ch\u1ee7 n\u01b0\u1edbc ngo\u00e0i, v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 n\u1eb1m \u1edf d\u1ecbch v\u1ee5 \u0111ang truy c\u1eadp. N\u1ebfu to\u00e0n b\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ec1u ch\u1eadm v\u00e0 k\u1ebft qu\u1ea3 qua LAN li\u00ean t\u1ee5c b\u1ea5t th\u01b0\u1eddng, n\u00ean b\u00e1o ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem ph\u00e2n t\u00edch chuy\u00ean s\u00e2u t\u1ea1i b\u00e0i V\u00ec sao Internet Viettel ch\u1eadm v\u00e0o bu\u1ed5i t\u1ed1i?.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c WiFi y\u1ebfu \u1edf ph\u00f2ng xa<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Di chuy\u1ec3n modem \u0111\u1ebfn v\u1ecb tr\u00ed trung t\u00e2m h\u01a1n n\u1ebfu \u0111i\u1ec1u ki\u1ec7n d\u00e2y cho ph\u00e9p. Thi\u1ebft b\u1ecb n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t cao, tho\u00e1ng v\u00e0 tr\u00e1nh v\u1eadt c\u1ea3n kim lo\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ed1i v\u1edbi nh\u00e0 nhi\u1ec1u t\u1ea7ng ho\u1eb7c c\u00f3 nhi\u1ec1u ph\u00f2ng, m\u1ed9t modem \u0111\u01a1n l\u1ebb c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7 v\u00f9ng ph\u1ee7. Khi \u0111\u00f3, Mesh WiFi l\u00e0 ph\u01b0\u01a1ng \u00e1n ph\u00f9 h\u1ee3p h\u01a1n vi\u1ec7c \u0111\u1eb7t nhi\u1ec1u b\u1ed9 k\u00edch s\u00f3ng kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tuy nhi\u00ean, n\u00e2ng c\u1ea5p g\u00f3i c\u01b0\u1edbc kh\u00f4ng t\u1ef1 \u0111\u1ed9ng l\u00e0m WiFi ph\u1ee7 xa h\u01a1n. T\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n v\u00e0 v\u00f9ng ph\u1ee7 WiFi l\u00e0 hai y\u1ebfu t\u1ed1 kh\u00e1c nhau.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i ch\u1ec9 x\u1ea3y ra tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng, kh\u00f4ng n\u00ean reset modem.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y qu\u00ean m\u1ea1ng WiFi, nh\u1eadp l\u1ea1i m\u1eadt kh\u1ea9u, t\u1eaft VPN, \u0111\u01b0a DNS v\u1ec1 t\u1ef1 \u0111\u1ed9ng v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft b\u1ecb. Tr\u00ean m\u00e1y t\u00ednh, c\u00f3 th\u1ec3 th\u1eed c\u1eadp nh\u1eadt driver card m\u1ea1ng ho\u1eb7c s\u1eed d\u1ee5ng d\u00e2y LAN \u0111\u1ec3 so s\u00e1nh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb kh\u00f4ng k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi b\u1ea5t k\u1ef3 m\u1ea1ng WiFi n\u00e0o kh\u00e1c, kh\u1ea3 n\u0103ng cao l\u1ed7i n\u1eb1m \u1edf ph\u1ea7n m\u1ec1m ho\u1eb7c ph\u1ea7n c\u1ee9ng c\u1ee7a thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c modem t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Th\u1eed c\u1eafm modem v\u00e0o m\u1ed9t \u1ed5 \u0111i\u1ec7n kh\u00e1c, ki\u1ec3m tra d\u00e2y ngu\u1ed3n v\u00e0 \u0111\u1eb7t thi\u1ebft b\u1ecb \u1edf n\u01a1i th\u00f4ng tho\u00e1ng h\u01a1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu modem v\u1eabn t\u1ef1 t\u1eaft b\u1eadt, \u0111\u1eb7c bi\u1ec7t khi c\u00f3 m\u00f9i b\u1ea5t th\u01b0\u1eddng ho\u1eb7c b\u1ed9 ngu\u1ed3n n\u00f3ng qu\u00e1 m\u1ee9c, n\u00ean ng\u1eaft \u0111i\u1ec7n v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ki\u1ec3m tra.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng t\u1ef1 m\u1edf v\u1ecf modem ho\u1eb7c d\u00f9ng b\u1ed9 ngu\u1ed3n kh\u00e1c th\u00f4ng s\u1ed1.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi_nao_co_the_tu_xu_ly_va_khi_nao_can_goi_ky_thuat\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">Khi n\u00e0o c\u00f3 th\u1ec3 t\u1ef1 x\u1eed l\u00fd v\u00e0 khi n\u00e0o c\u1ea7n g\u1ecdi k\u1ef9 thu\u1eadt?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1898\" aria-describedby=\"caption-attachment-1898\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1898 size-full\" title=\"T\u1ef1 x\u1eed l\u00fd ho\u1eb7c g\u1ecdi k\u1ef9 thu\u1eadt Viettel\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-5.jpg\" alt=\"T\u1ef1 x\u1eed l\u00fd ho\u1eb7c g\u1ecdi k\u1ef9 thu\u1eadt Viettel\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-5.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-5-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-5-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1898\" class=\"wp-caption-text\">T\u1ef1 x\u1eed l\u00fd ho\u1eb7c g\u1ecdi k\u1ef9 thu\u1eadt Viettel<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ef1 x\u1eed l\u00fd khi l\u1ed7i ch\u1ec9 xu\u1ea5t hi\u1ec7n tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb, WiFi y\u1ebfu v\u00ec \u0111\u1ee9ng xa modem, d\u00e2y LAN b\u1ecb l\u1ecfng, modem c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i ho\u1eb7c thi\u1ebft b\u1ecb \u0111ang b\u1eadt VPN.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1eefng thao t\u00e1c an to\u00e0n bao g\u1ed3m t\u1eaft b\u1eadt modem b\u1eb1ng n\u00fat ngu\u1ed3n, qu\u00ean m\u1ea1ng WiFi, kh\u1edfi \u0111\u1ed9ng \u0111i\u1ec7n tho\u1ea1i, ki\u1ec3m tra d\u00e2y LAN, di chuy\u1ec3n \u0111\u1ebfn g\u1ea7n modem v\u00e0 d\u1eebng c\u00e1c t\u00e1c v\u1ee5 t\u1ea3i d\u1eef li\u1ec7u.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">K\u1ef9 thu\u1eadt vi\u00ean n\u00ean \u0111\u01b0\u1ee3c li\u00ean h\u1ec7 khi \u0111\u00e8n LOS \u0111\u1ecf, PON kh\u00f4ng s\u00e1ng, d\u00e2y quang b\u1ecb \u0111\u1ee9t, modem m\u1ea5t ngu\u1ed3n, thi\u1ebft b\u1ecb t\u1ef1 kh\u1edfi \u0111\u1ed9ng nhi\u1ec1u l\u1ea7n ho\u1eb7c to\u00e0n b\u1ed9 gia \u0111\u00ecnh m\u1ea5t Internet k\u00e9o d\u00e0i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ngo\u00e0i ra, n\u1ebfu Internet v\u1eabn ch\u1eadm b\u1ea5t th\u01b0\u1eddng khi \u0111o b\u1eb1ng d\u00e2y LAN trong nhi\u1ec1u th\u1eddi \u0111i\u1ec3m, ng\u01b0\u1eddi d\u00f9ng c\u0169ng n\u00ean y\u00eau c\u1ea7u ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1eefng tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng n\u00ean t\u1ef1 s\u1eeda<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean t\u1ef1 th\u00e1o \u0111\u1ea7u c\u00e1p quang, c\u1eaft n\u1ed1i d\u00e2y, m\u1edf v\u1ecf modem, thay ngu\u1ed3n kh\u00f4ng \u0111\u00fang th\u00f4ng s\u1ed1 ho\u1eb7c ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 GPON.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u0169ng kh\u00f4ng n\u00ean reset modem khi ch\u01b0a c\u00f3 t\u00e0i kho\u1ea3n v\u00e0 th\u00f4ng tin c\u1ea5u h\u00ecnh. Sau khi reset, modem c\u00f3 th\u1ec3 m\u1ea5t k\u1ebft n\u1ed1i ho\u00e0n to\u00e0n v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng leo l\u00ean m\u00e1i nh\u00e0, c\u1ed9t \u0111i\u1ec7n ho\u1eb7c v\u1ecb tr\u00ed cao \u0111\u1ec3 ki\u1ec3m tra d\u00e2y sau m\u01b0a b\u00e3o. An to\u00e0n c\u1ea7n \u0111\u01b0\u1ee3c \u01b0u ti\u00ean tr\u01b0\u1edbc vi\u1ec7c kh\u00f4i ph\u1ee5c Internet.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">D\u1ea5u hi\u1ec7u c\u1ea7n b\u00e1o k\u1ef9 thu\u1eadt ngay<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu modem c\u00f3 m\u00f9i kh\u00e9t, ngu\u1ed3n \u0111i\u1ec7n ph\u00e1t tia l\u1eeda, d\u00e2y b\u00ean ngo\u00e0i b\u1ecb \u0111\u1ee9t ho\u1eb7c n\u1eb1m g\u1ea7n \u0111\u01b0\u1eddng \u0111i\u1ec7n, h\u00e3y ng\u1eaft ngu\u1ed3n modem n\u1ebfu c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n an to\u00e0n v\u00e0 li\u00ean h\u1ec7 h\u1ed7 tr\u1ee3.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi LOS \u0111\u1ecf k\u00e9o d\u00e0i, vi\u1ec7c t\u1eaft b\u1eadt modem nhi\u1ec1u l\u1ea7n th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng. Ng\u01b0\u1eddi d\u00f9ng n\u00ean g\u1eedi y\u00eau c\u1ea7u s\u1edbm \u0111\u1ec3 \u0111\u01b0\u1eddng quang \u0111\u01b0\u1ee3c \u0111o v\u00e0 ki\u1ec3m tra tr\u1ef1c ti\u1ebfp.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_bao_hong_Internet_Viettel_nhanh_nhat\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1899\" aria-describedby=\"caption-attachment-1899\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1899 size-full\" title=\"C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-6.jpg\" alt=\"C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-6.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-6-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-6-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1899\" class=\"wp-caption-text\">C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 b\u00e1o s\u1ef1 c\u1ed1 qua \u1ee9ng d\u1ee5ng My Viettel ho\u1eb7c t\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5 Internet c\u00e1p quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel c\u00f3 h\u01b0\u1edbng d\u1eabn kh\u00e1ch h\u00e0ng g\u1eedi y\u00eau c\u1ea7u b\u00e1o h\u1ecfng Internet tr\u1ef1c ti\u1ebfp tr\u00ean \u1ee9ng d\u1ee5ng My Viettel.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Quy tr\u00ecnh tr\u00ean \u1ee9ng d\u1ee5ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo t\u1eebng phi\u00ean b\u1ea3n, nh\u01b0ng th\u00f4ng th\u01b0\u1eddng ng\u01b0\u1eddi d\u00f9ng c\u1ea7n \u0111\u0103ng nh\u1eadp t\u00e0i kho\u1ea3n qu\u1ea3n l\u00fd d\u1ecbch v\u1ee5, ch\u1ecdn Internet ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ed1 \u0111\u1ecbnh, m\u1edf ph\u1ea7n h\u1ed7 tr\u1ee3 v\u00e0 g\u1eedi y\u00eau c\u1ea7u b\u00e1o h\u1ecfng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ngo\u00e0i My Viettel, kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 g\u1ecdi 1800 8119 \u0111\u1ec3 t\u01b0 v\u1ea5n, b\u00e1o h\u1ecfng v\u00e0 nh\u1eadn h\u1ed7 tr\u1ee3 \u0111\u1ed1i v\u1edbi d\u1ecbch v\u1ee5 Internet c\u1ed1 \u0111\u1ecbnh. Viettel c\u00f4ng b\u1ed1 \u0111\u00e2y l\u00e0 t\u1ed5ng \u0111\u00e0i mi\u1ec5n ph\u00ed d\u00e0nh cho d\u1ecbch v\u1ee5 c\u1ed1 \u0111\u1ecbnh, truy\u1ec1n h\u00ecnh v\u00e0 Internet c\u00e1p quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Do \u0111\u1ea7u s\u1ed1 v\u00e0 quy tr\u00ecnh t\u1ed5ng \u0111\u00e0i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra l\u1ea1i tr\u00ean \u1ee9ng d\u1ee5ng My Viettel ho\u1eb7c website ch\u00ednh th\u1ee9c c\u1ee7a Viettel t\u1ea1i th\u1eddi \u0111i\u1ec3m li\u00ean h\u1ec7.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Th\u00f4ng tin n\u00ean chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi b\u00e1o h\u1ecfng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ec3 y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c ti\u1ebfp nh\u1eadn nhanh, ng\u01b0\u1eddi d\u00f9ng n\u00ean chu\u1ea9n b\u1ecb s\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u0103ng k\u00fd d\u1ecbch v\u1ee5, m\u00e3 kh\u00e1ch h\u00e0ng n\u1ebfu c\u00f3, \u0111\u1ecba ch\u1ec9 l\u1eafp \u0111\u1eb7t v\u00e0 th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u x\u1ea3y ra l\u1ed7i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ngo\u00e0i ra, c\u1ea7n m\u00f4 t\u1ea3 r\u00f5 tr\u1ea1ng th\u00e1i \u0111\u00e8n modem, l\u1ed7i x\u1ea3y ra tr\u00ean m\u1ed9t hay nhi\u1ec1u thi\u1ebft b\u1ecb v\u00e0 nh\u1eefng thao t\u00e1c \u0111\u00e3 th\u1ef1c hi\u1ec7n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ed9t m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng c\u00f3 th\u1ec3 nh\u01b0 sau:<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u201cInternet t\u1ea1i \u0111\u1ecba ch\u1ec9 c\u1ee7a t\u00f4i m\u1ea5t t\u1eeb kho\u1ea3ng 20 gi\u1edd. T\u1ea5t c\u1ea3 \u0111i\u1ec7n tho\u1ea1i v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec1u kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng. Modem v\u1eabn c\u00f3 ngu\u1ed3n nh\u01b0ng \u0111\u00e8n LOS \u0111ang nh\u1ea5p nh\u00e1y \u0111\u1ecf. T\u00f4i \u0111\u00e3 t\u1eaft v\u00e0 b\u1eadt l\u1ea1i modem nh\u01b0ng ch\u01b0a kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c.\u201d<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch m\u00f4 t\u1ea3 n\u00e0y gi\u00fap b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 nhanh ch\u00f3ng nh\u1eadn bi\u1ebft \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 l\u1ed7i \u0111\u01b0\u1eddng quang thay v\u00ec l\u1ed7i ri\u00eang tr\u00ean \u0111i\u1ec7n tho\u1ea1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u00e1o h\u1ecfng qua My Viettel<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Sau khi \u0111\u0103ng nh\u1eadp My Viettel, ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn d\u1ecbch v\u1ee5 Internet \u0111ang qu\u1ea3n l\u00fd r\u1ed3i truy c\u1eadp khu v\u1ef1c h\u1ed7 tr\u1ee3 ho\u1eb7c b\u00e1o h\u1ecfng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u1ea7n ki\u1ec3m tra l\u1ea1i \u0111\u1ecba ch\u1ec9, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i li\u00ean h\u1ec7 v\u00e0 n\u1ed9i dung s\u1ef1 c\u1ed1 tr\u01b0\u1edbc khi g\u1eedi. Sau \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 theo d\u00f5i tr\u1ea1ng th\u00e1i ti\u1ebfp nh\u1eadn tr\u00ean \u1ee9ng d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng cung c\u1ea5p m\u00e3 OTP, m\u1eadt kh\u1ea9u ng\u00e2n h\u00e0ng ho\u1eb7c th\u00f4ng tin \u0111\u0103ng nh\u1eadp cho ng\u01b0\u1eddi li\u00ean h\u1ec7 qua k\u00eanh kh\u00f4ng x\u00e1c minh \u0111\u01b0\u1ee3c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">G\u1ecdi t\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi g\u1ecdi t\u1ed5ng \u0111\u00e0i, n\u00ean \u0111\u1ee9ng g\u1ea7n modem \u0111\u1ec3 c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 tr\u1ea1ng th\u00e1i \u0111\u00e8n ho\u1eb7c th\u1ef1c hi\u1ec7n thao t\u00e1c theo h\u01b0\u1edbng d\u1eabn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu s\u1ef1 c\u1ed1 c\u1ea7n ki\u1ec3m tra t\u1ea1i nh\u00e0, h\u00e3y cung c\u1ea5p khung gi\u1edd c\u00f3 ng\u01b0\u1eddi ti\u1ebfp nh\u1eadn k\u1ef9 thu\u1eadt vi\u00ean. Sau khi \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u01b0\u1ee3c x\u1eed l\u00fd, n\u00ean ki\u1ec3m tra l\u1ea1i c\u1ea3 WiFi v\u00e0 d\u00e2y LAN.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem h\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1ea1i b\u00e0i C\u00e1ch b\u00e1o h\u1ecfng Internet Viettel nhanh nh\u1ea5t.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra Viettel c\u00f3 \u0111ang b\u1ea3o tr\u00ec kh\u00f4ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu nhi\u1ec1u h\u1ed9 xung quanh c\u00f9ng m\u1ea5t m\u1ea1ng, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra th\u00f4ng b\u00e1o tr\u00ean My Viettel ho\u1eb7c h\u1ecfi t\u1ed5ng \u0111\u00e0i v\u1ec1 t\u00ecnh tr\u1ea1ng h\u1ea1 t\u1ea7ng khu v\u1ef1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean thay \u0111\u1ed5i c\u1ea5u h\u00ecnh modem khi ch\u01b0a x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n. N\u1ebfu s\u1ef1 c\u1ed1 l\u00e0 b\u1ea3o tr\u00ec ho\u1eb7c l\u1ed7i tuy\u1ebfn c\u00e1p, vi\u1ec7c reset thi\u1ebft b\u1ecb s\u1ebd kh\u00f4ng gi\u00fap kh\u00f4i ph\u1ee5c Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem b\u00e0i C\u00e1ch ki\u1ec3m tra Internet Viettel c\u00f3 \u0111ang b\u1ea3o tr\u00ec hay kh\u00f4ng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_han_che_loi_Internet_Viettel_tai_dien\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch h\u1ea1n ch\u1ebf l\u1ed7i Internet Viettel t\u00e1i di\u1ec5n<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1900\" aria-describedby=\"caption-attachment-1900\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1900 size-full\" title=\"C\u00e1ch h\u1ea1n ch\u1ebf l\u1ed7i Internet Viettel t\u00e1i di\u1ec5n\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-7.jpg\" alt=\"C\u00e1ch h\u1ea1n ch\u1ebf l\u1ed7i Internet Viettel t\u00e1i di\u1ec5n\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-7.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-7-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/loi-internet-viettel-7-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1900\" class=\"wp-caption-text\">C\u00e1ch h\u1ea1n ch\u1ebf l\u1ed7i Internet Viettel t\u00e1i di\u1ec5n<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng th\u1ec3 ph\u00f2ng tr\u00e1nh ho\u00e0n to\u00e0n c\u00e1c s\u1ef1 c\u1ed1 h\u1ea1 t\u1ea7ng, nh\u01b0ng ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 l\u1ed7i WiFi v\u00e0 modem b\u1eb1ng c\u00e1ch b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb h\u1ee3p l\u00fd.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1eb7t modem \u1edf v\u1ecb tr\u00ed th\u00f4ng tho\u00e1ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i v\u1ecb tr\u00ed cao, kh\u00f4 r\u00e1o v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i g\u1ea7n trung t\u00e2m c\u0103n nh\u00e0.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean \u0111\u1eb7t thi\u1ebft b\u1ecb trong t\u1ee7 k\u00edn, s\u00e1t s\u00e0n, sau tivi ho\u1eb7c g\u1ea7n ngu\u1ed3n nhi\u1ec7t. Kho\u1ea3ng tr\u1ed1ng xung quanh gi\u00fap modem t\u1ea3n nhi\u1ec7t v\u00e0 ph\u00e1t s\u00f3ng \u1ed5n \u0111\u1ecbnh h\u01a1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u1ea3o v\u1ec7 \u0111\u01b0\u1eddng d\u00e2y c\u00e1p quang<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y quang c\u1ea7n \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh g\u1ecdn, tr\u00e1nh b\u1ecb k\u00e9o c\u0103ng, k\u1eb9p v\u00e0o c\u1eeda ho\u1eb7c g\u1eadp th\u00e0nh v\u00f2ng qu\u00e1 nh\u1ecf.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu c\u1ea7n chuy\u1ec3n modem sang ph\u00f2ng kh\u00e1c, n\u00ean y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt h\u1ed7 tr\u1ee3 thay v\u00ec t\u1ef1 k\u00e9o d\u00e2y. Vi\u1ec7c di chuy\u1ec3n sai c\u00e1ch c\u00f3 th\u1ec3 g\u00e2y suy hao ho\u1eb7c \u0111\u1ee9t s\u1ee3i quang.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m so\u00e1t thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u00ean ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb \u0111ang s\u1eed d\u1ee5ng m\u1ea1ng. Camera, tivi v\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 ti\u00eau th\u1ee5 b\u0103ng th\u00f4ng ngay c\u1ea3 khi ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng tr\u1ef1c ti\u1ebfp thao t\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ph\u00e1t hi\u1ec7n thi\u1ebft b\u1ecb l\u1ea1, h\u00e3y \u0111\u1ed5i m\u1eadt kh\u1ea9u WiFi v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i c\u00e1c thi\u1ebft b\u1ecb h\u1ee3p l\u1ec7.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">D\u00f9ng Mesh WiFi cho nh\u00e0 r\u1ed9ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00e0 nhi\u1ec1u t\u1ea7ng, nhi\u1ec1u ph\u00f2ng ho\u1eb7c c\u00f3 t\u01b0\u1eddng b\u00ea t\u00f4ng th\u01b0\u1eddng c\u1ea7n nhi\u1ec1u \u0111i\u1ec3m ph\u00e1t WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Mesh WiFi c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00f9ng ph\u1ee7 v\u00e0 gi\u00fap thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c \u0111i\u1ec3m ph\u00e1t thu\u1eadn ti\u1ec7n h\u01a1n. Tuy nhi\u00ean, hi\u1ec7u qu\u1ea3 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o v\u1ecb tr\u00ed c\u00e1c \u0111i\u1ec3m Mesh v\u00e0 c\u00e1ch k\u1ebft n\u1ed1i gi\u1eefa ch\u00fang.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e1nh gi\u00e1 l\u1ea1i nhu c\u1ea7u s\u1eed d\u1ee5ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi s\u1ed1 th\u00e0nh vi\u00ean, camera v\u00e0 thi\u1ebft b\u1ecb th\u00f4ng minh t\u0103ng l\u00ean, g\u00f3i c\u01b0\u1edbc ho\u1eb7c modem c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n \u0111\u00e1p \u1ee9ng t\u1ed1t.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u01b0\u1edbc khi n\u00e2ng c\u1ea5p, c\u1ea7n x\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n hay v\u00f9ng ph\u1ee7 WiFi. N\u00e2ng g\u00f3i c\u01b0\u1edbc kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c \u0111i\u1ec3m ch\u1ebft WiFi, trong khi l\u1eafp th\u00eam b\u1ed9 ph\u00e1t kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c g\u00f3i c\u01b0\u1edbc thi\u1ebfu b\u0103ng th\u00f4ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ghi l\u1ea1i th\u1eddi \u0111i\u1ec3m x\u1ea3y ra l\u1ed7i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ea1ng th\u01b0\u1eddng xuy\u00ean ch\u1eadp ch\u1eddn nh\u01b0ng t\u1ef1 ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i, ng\u01b0\u1eddi d\u00f9ng n\u00ean ghi l\u1ea1i th\u1eddi gian, tr\u1ea1ng th\u00e1i \u0111\u00e8n modem v\u00e0 k\u1ebft qu\u1ea3 \u0111o t\u1ed1c \u0111\u1ed9.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Th\u00f4ng tin n\u00e0y gi\u00fap k\u1ef9 thu\u1eadt vi\u00ean x\u00e1c \u0111\u1ecbnh l\u1ed7i x\u1ea3y ra theo gi\u1edd, theo thi\u1ebft b\u1ecb hay theo \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_loi_Internet_Viettel\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 l\u1ed7i Internet Viettel<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet Viettel b\u1ecb l\u1ed7i ph\u1ea3i l\u00e0m g\u00ec \u0111\u1ea7u ti\u00ean?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y ki\u1ec3m tra l\u1ed7i x\u1ea3y ra tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb hay to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb. Sau \u0111\u00f3 quan s\u00e1t \u0111\u00e8n Power, PON, LOS v\u00e0 Internet tr\u00ean modem. N\u1ebfu LOS \u0111\u1ecf, n\u00ean b\u00e1o k\u1ef9 thu\u1eadt. N\u1ebfu c\u00e1c \u0111\u00e8n b\u00ecnh th\u01b0\u1eddng, h\u00e3y kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem v\u00e0 ki\u1ec3m tra b\u1eb1ng thi\u1ebft b\u1ecb kh\u00e1c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet Viettel kh\u00f4ng c\u00f3 m\u1ea1ng nh\u01b0ng \u0111\u00e8n v\u1eabn s\u00e1ng l\u00e0 sao?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n ngu\u1ed3n v\u00e0 WiFi c\u00f3 th\u1ec3 v\u1eabn s\u00e1ng d\u00f9 modem \u0111\u00e3 m\u1ea5t k\u1ebft n\u1ed1i Internet. C\u1ea7n ki\u1ec3m tra th\u00eam PON, LOS v\u00e0 Internet. N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng v\u00e0o m\u1ea1ng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m tr\u00ean thi\u1ebft b\u1ecb \u0111\u00f3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng ph\u1ea3i l\u00e0m g\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y th\u1eed tr\u00ean m\u1ed9t \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh kh\u00e1c. N\u1ebfu t\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb c\u00f9ng l\u1ed7i, kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem v\u00e0 ki\u1ec3m tra t\u00edn hi\u1ec7u quang. N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb g\u1eb7p v\u1ea5n \u0111\u1ec1, qu\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i l\u1ea1i v\u00e0 t\u1eaft VPN.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n LOS \u0111\u1ecf c\u00f3 t\u1ef1 s\u1eeda \u0111\u01b0\u1ee3c kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 n\u00ean ki\u1ec3m tra d\u00e2y b\u1eb1ng m\u1eaft th\u01b0\u1eddng. Kh\u00f4ng n\u00ean t\u1ef1 th\u00e1o ho\u1eb7c n\u1ed1i d\u00e2y quang. \u0110\u00e8n LOS \u0111\u1ecf th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn m\u1ea5t ho\u1eb7c suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 c\u1ea7n k\u1ef9 thu\u1eadt vi\u00ean ki\u1ec3m tra.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 n\u00ean nh\u1ea5n Reset modem khi m\u1ea5t m\u1ea1ng kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean. Reset c\u00f3 th\u1ec3 x\u00f3a c\u1ea5u h\u00ecnh Internet, t\u00ean WiFi v\u00e0 m\u1eadt kh\u1ea9u. Ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 n\u00ean kh\u1edfi \u0111\u1ed9ng l\u1ea1i b\u1eb1ng n\u00fat ngu\u1ed3n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem c\u00f3 m\u1ea5t m\u1eadt kh\u1ea9u kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i b\u1eb1ng n\u00fat ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng kh\u00f4ng l\u00e0m m\u1ea5t m\u1eadt kh\u1ea9u. Ch\u1ec9 thao t\u00e1c Reset m\u1edbi c\u00f3 th\u1ec3 \u0111\u01b0a modem v\u1ec1 c\u1ea5u h\u00ecnh m\u1eb7c \u0111\u1ecbnh.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">T\u1ea1i sao m\u1ea1ng Viettel ch\u1eadm v\u00e0o bu\u1ed5i t\u1ed1i?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do nhi\u1ec1u thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng c\u00f9ng l\u00fac, nhi\u1ec5u WiFi, t\u1ea3i d\u1eef li\u1ec7u n\u1ec1n ho\u1eb7c website \u0111ang truy c\u1eadp ph\u1ea3n h\u1ed3i ch\u1eadm. N\u00ean th\u1eed b\u1eb1ng d\u00e2y LAN v\u00e0 \u0111o t\u1ea1i nhi\u1ec1u th\u1eddi \u0111i\u1ec3m.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Speedtest th\u1ea5p c\u00f3 ch\u1eafc ch\u1eafn l\u00e0 l\u1ed7i nh\u00e0 m\u1ea1ng kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng. K\u1ebft qu\u1ea3 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch \u0111\u1ebfn modem, thi\u1ebft b\u1ecb \u0111o, VPN, m\u00e1y ch\u1ee7 Speedtest v\u00e0 nh\u1eefng t\u00e1c v\u1ee5 \u0111ang s\u1eed d\u1ee5ng m\u1ea1ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">T\u1ea1i sao ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c WiFi?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 l\u01b0u sai m\u1eadt kh\u1ea9u, l\u1ed7i IP, DNS ho\u1eb7c VPN. H\u00e3y qu\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i l\u1ea1i v\u00e0 kh\u1edfi \u0111\u1ed9ng thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea1ng d\u00f9ng d\u00e2y LAN \u1ed5n nh\u01b0ng WiFi ch\u1eadm l\u00e0 l\u1ed7i g\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0\u1eddng truy\u1ec1n c\u00f3 th\u1ec3 v\u1eabn ho\u1ea1t \u0111\u1ed9ng t\u1ed1t. Nguy\u00ean nh\u00e2n th\u01b0\u1eddng n\u1eb1m \u1edf v\u00f9ng ph\u1ee7, nhi\u1ec5u s\u00f3ng, v\u1ecb tr\u00ed modem ho\u1eb7c kh\u1ea3 n\u0103ng WiFi c\u1ee7a thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet m\u1ea5t sau m\u01b0a l\u1edbn ph\u1ea3i l\u00e0m g\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Quan s\u00e1t d\u00e2y v\u00e0 modem t\u1eeb v\u1ecb tr\u00ed an to\u00e0n. N\u1ebfu LOS \u0111\u1ecf ho\u1eb7c nh\u00ecn th\u1ea5y d\u00e2y b\u1ecb \u0111\u1ee9t, h\u00e3y b\u00e1o k\u1ef9 thu\u1eadt. Kh\u00f4ng t\u1ef1 leo cao ho\u1eb7c n\u1ed1i d\u00e2y.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">L\u00e0m sao bi\u1ebft Viettel \u0111ang b\u1ea3o tr\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3 ki\u1ec3m tra tr\u00ean My Viettel ho\u1eb7c li\u00ean h\u1ec7 t\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3. N\u1ebfu nhi\u1ec1u h\u1ed9 g\u1ea7n nhau c\u00f9ng m\u1ea5t m\u1ea1ng, kh\u1ea3 n\u0103ng cao h\u1ea1 t\u1ea7ng khu v\u1ef1c \u0111ang g\u1eb7p s\u1ef1 c\u1ed1 ho\u1eb7c \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u00e1o h\u1ecfng Internet Viettel b\u1eb1ng c\u00e1ch n\u00e0o?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 g\u1eedi y\u00eau c\u1ea7u tr\u00ean My Viettel ho\u1eb7c g\u1ecdi t\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3 Internet c\u1ed1 \u0111\u1ecbnh 1800 8119. N\u00ean chu\u1ea9n b\u1ecb s\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u0103ng k\u00fd, \u0111\u1ecba ch\u1ec9 l\u1eafp \u0111\u1eb7t v\u00e0 tr\u1ea1ng th\u00e1i \u0111\u00e8n modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Khi n\u00e0o k\u1ef9 thu\u1eadt vi\u00ean c\u1ea7n \u0111\u1ebfn nh\u00e0?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">K\u1ef9 thu\u1eadt vi\u00ean th\u01b0\u1eddng c\u1ea7n \u0111\u1ebfn khi d\u00e2y c\u00e1p quang b\u1ecb \u0111\u1ee9t, \u0111\u1ea7u n\u1ed1i suy hao, modem h\u1ecfng, c\u1ed5ng LAN l\u1ed7i ho\u1eb7c t\u00edn hi\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c \u0111o tr\u1ef1c ti\u1ebfp.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem n\u00f3ng c\u00f3 ph\u1ea3i b\u1ecb h\u1ecfng kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem c\u00f3 th\u1ec3 \u1ea5m khi ho\u1ea1t \u0111\u1ed9ng. Tuy nhi\u00ean, n\u1ebfu thi\u1ebft b\u1ecb n\u00f3ng b\u1ea5t th\u01b0\u1eddng, t\u1ef1 t\u1eaft ho\u1eb7c c\u00f3 m\u00f9i l\u1ea1, n\u00ean ng\u1eaft ngu\u1ed3n v\u00e0 li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea1ng ch\u1eadp ch\u1eddn c\u00f3 ph\u1ea3i do modem h\u1ecfng kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u01b0a ch\u1eafc. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 l\u00e0 nhi\u1ec5u WiFi, v\u1ecb tr\u00ed \u0111\u1eb7t modem, ngu\u1ed3n \u0111i\u1ec7n, qu\u00e1 nhi\u1ec1u thi\u1ebft b\u1ecb ho\u1eb7c l\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 n\u00ean n\u00e2ng g\u00f3i c\u01b0\u1edbc khi WiFi y\u1ebfu?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean n\u00e2ng g\u00f3i ngay khi ch\u01b0a ki\u1ec3m tra v\u00f9ng ph\u1ee7. G\u00f3i c\u01b0\u1edbc nhanh h\u01a1n kh\u00f4ng gi\u00fap t\u00edn hi\u1ec7u WiFi xuy\u00ean qua nhi\u1ec1u t\u01b0\u1eddng ho\u1eb7c ph\u1ee7 xa h\u01a1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Nh\u00e0 nhi\u1ec1u t\u1ea7ng n\u00ean d\u00f9ng b\u1ed9 k\u00edch s\u00f3ng hay Mesh WiFi?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Mesh WiFi th\u01b0\u1eddng ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi nh\u00e0 nhi\u1ec1u t\u1ea7ng v\u00ec c\u00e1c \u0111i\u1ec3m ph\u00e1t c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng. Tuy nhi\u00ean, c\u1ea7n b\u1ed1 tr\u00ed \u0111\u00fang v\u1ecb tr\u00ed \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 m\u1ed9t website kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c c\u00f3 ph\u1ea3i l\u1ed7i Viettel kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u01b0a ch\u1eafc. Website c\u00f3 th\u1ec3 \u0111ang b\u1ea3o tr\u00ec ho\u1eb7c m\u00e1y ch\u1ee7 g\u1eb7p s\u1ef1 c\u1ed1. H\u00e3y th\u1eed c\u00e1c website kh\u00e1c v\u00e0 \u0111\u1ed5i tr\u00ecnh duy\u1ec7t tr\u01b0\u1edbc khi b\u00e1o l\u1ed7i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet v\u1eabn ch\u1eadm sau khi kh\u1edfi \u0111\u1ed9ng modem ph\u1ea3i l\u00e0m sao?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y d\u1eebng t\u1ea3i d\u1eef li\u1ec7u, gi\u1ea3m thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u00e0 th\u1eed Speedtest b\u1eb1ng d\u00e2y LAN. N\u1ebfu t\u1ed1c \u0111\u1ed9 v\u1eabn b\u1ea5t th\u01b0\u1eddng trong nhi\u1ec1u th\u1eddi \u0111i\u1ec3m, n\u00ean b\u00e1o h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">K\u1ebft lu\u1eadn<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i Internet Viettel c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb \u0111\u01b0\u1eddng c\u00e1p quang, modem GPON, ngu\u1ed3n \u0111i\u1ec7n, d\u00e2y LAN, v\u00f9ng ph\u1ee7 WiFi ho\u1eb7c thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng. V\u00ec v\u1eady, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n x\u00e1c \u0111\u1ecbnh l\u1ed7i x\u1ea3y ra tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb hay to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n kh\u1eafc ph\u1ee5c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1eefng l\u1ed7i \u0111\u01a1n gi\u1ea3n nh\u01b0 sai m\u1eadt kh\u1ea9u, VPN, WiFi y\u1ebfu \u1edf ph\u00f2ng xa ho\u1eb7c modem g\u1eb7p l\u1ed7i t\u1ea1m th\u1eddi th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u1ef1 x\u1eed l\u00fd. Ng\u01b0\u1ee3c l\u1ea1i, khi LOS \u0111\u1ecf, PON m\u1ea5t t\u00edn hi\u1ec7u, d\u00e2y quang b\u1ecb \u0111\u1ee9t ho\u1eb7c modem t\u1ef1 kh\u1edfi \u0111\u1ed9ng li\u00ean t\u1ee5c, ng\u01b0\u1eddi d\u00f9ng n\u00ean y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt vi\u00ean ki\u1ec3m tra.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ec3 x\u1eed l\u00fd nhanh h\u01a1n, h\u00e3y chu\u1ea9n b\u1ecb s\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u0103ng k\u00fd, \u0111\u1ecba ch\u1ec9 l\u1eafp \u0111\u1eb7t, th\u1eddi \u0111i\u1ec3m x\u1ea3y ra l\u1ed7i v\u00e0 tr\u1ea1ng th\u00e1i \u0111\u00e8n modem tr\u01b0\u1edbc khi b\u00e1o h\u1ecfng.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1ed7i Internet Viettel c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau nh\u01b0 m\u1ea5t m\u1ea1ng ho\u00e0n to\u00e0n, c\u00f3 WiFi nh\u01b0ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c Internet, modem b\u00e1o \u0111\u00e8n LOS \u0111\u1ecf, t\u1ed1c \u0111\u1ed9 t\u1ea3i ch\u1eadm, ping cao ho\u1eb7c k\u1ebft n\u1ed1i th\u01b0\u1eddng xuy\u00ean b\u1ecb gi\u00e1n \u0111o\u1ea1n. M\u1ed7i hi\u1ec7n t\u01b0\u1ee3ng c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb m\u1ed9t nguy\u00ean nh\u00e2n<\/p>\n","protected":false},"author":1,"featured_media":1893,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92,1],"tags":[556,551,552,554,507,557,553,555],"class_list":["post-1885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","category-uncategorized","tag-internet-mat-ket-noi","tag-internet-viettel-khong-vao-duoc-mang","tag-khac-phuc-mang-viettel","tag-loi-modem-viettel","tag-loi-wifi-viettel","tag-su-co-internet-viettel","tag-sua-loi-internet","tag-wifi-chap-chon"],"_links":{"self":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1885","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/comments?post=1885"}],"version-history":[{"count":6,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1885\/revisions"}],"predecessor-version":[{"id":1901,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1885\/revisions\/1901"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/media\/1893"}],"wp:attachment":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/media?parent=1885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/categories?post=1885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/tags?post=1885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}