{"id":30982,"date":"2025-06-26T13:27:19","date_gmt":"2025-06-26T06:27:19","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=30982"},"modified":"2025-06-26T13:28:16","modified_gmt":"2025-06-26T06:28:16","slug":"tat-dhcp-de-lam-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/","title":{"rendered":"T\u1eaft DHCP \u0110\u1ec3 L\u00e0m G\u00ec? 5 Tr\u01b0\u1eddng H\u1ee3p B\u1eaft Bu\u1ed9c &#038; H\u01b0\u1edbng D\u1eabn A-Z"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#DHCP-la-gi\" >DHCP l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Tai-sao-can-tat-DHCP\" >T\u1ea1i sao c\u1ea7n t\u1eaft DHCP?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#5-Truong-hop-ban-bat-buoc-phai-tat-DHCP\" >5 Tr\u01b0\u1eddng h\u1ee3p b\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i t\u1eaft DHCP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#1-Bien-router-cu-thanh-diem-phat-WiFi-Access-Point\" >1. Bi\u1ebfn router c\u0169 th\u00e0nh \u0111i\u1ec3m ph\u00e1t WiFi (Access Point)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#2-Cau-hinh-router-lam-Repeater-bo-lap-song\" >2. C\u1ea5u h\u00ecnh router l\u00e0m Repeater (b\u1ed9 l\u1eb7p s\u00f3ng)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#3-Ket-noi-nhieu-router-qua-mang-LAN\" >3. K\u1ebft n\u1ed1i nhi\u1ec1u router qua m\u1ea1ng LAN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#4-Khac-phuc-loi-%E2%80%9CIP-Address-Conflict%E2%80%9D\" >4. Kh\u1eafc ph\u1ee5c l\u1ed7i &#8220;IP Address Conflict&#8221;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#5-Su-dung-dia-chi-IP-tinh-cho-thiet-bi-quan-trong\" >5. S\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP t\u0129nh cho thi\u1ebft b\u1ecb quan tr\u1ecdng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Huong-dan-cach-tat-DHCP-chi-tiet\" >H\u01b0\u1edbng d\u1eabn c\u00e1ch t\u1eaft DHCP chi ti\u1ebft<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Cach-tat-DHCP-tren-router-TP-Link\" >C\u00e1ch t\u1eaft DHCP tr\u00ean router TP-Link<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Cach-tat-DHCP-tren-router-Tenda\" >C\u00e1ch t\u1eaft DHCP tr\u00ean router Tenda<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Cach-tat-DHCP-tren-modem-nha-mang-Viettel-FPT-VNPT\" >C\u00e1ch t\u1eaft DHCP tr\u00ean modem nh\u00e0 m\u1ea1ng (Viettel, FPT, VNPT)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Bat-lai-DHCP-khi-can-Phai-lam-sao\" >B\u1eadt l\u1ea1i DHCP khi c\u1ea7n: Ph\u1ea3i l\u00e0m sao?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Giai-dap-cac-cau-hoi-thuong-gap-FAQ\" >Gi\u1ea3i \u0111\u00e1p c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Tat-DHCP-co-lam-mat-Internet-khong\" >T\u1eaft DHCP c\u00f3 l\u00e0m m\u1ea5t Internet kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Lam-sao-de-biet-mang-co-2-DHCP-Server\" >L\u00e0m sao \u0111\u1ec3 bi\u1ebft m\u1ea1ng c\u00f3 2 DHCP Server?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Co-nen-tat-DHCP-tren-modem-chinh-khong\" >C\u00f3 n\u00ean t\u1eaft DHCP tr\u00ean modem ch\u00ednh kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/tat-dhcp-de-lam-gi\/#Tat-DHCP-roi-nhung-van-khong-vao-duoc-mang\" >T\u1eaft DHCP r\u1ed3i nh\u01b0ng v\u1eabn kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>B\u1ea1n \u0111ang t\u00ecm c\u00e1ch m\u1edf r\u1ed9ng s\u00f3ng WiFi nh\u01b0ng l\u1ea1i \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn ph\u1ea3i t\u1eaft DHCP tr\u00ean router ph\u1ee5 m\u00e0 kh\u00f4ng hi\u1ec3u r\u00f5 l\u00fd do? Vi\u1ec7c t\u1eaft DHCP \u0111\u00fang c\u00e1ch ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ed5n \u0111\u1ecbnh, tr\u00e1nh xung \u0111\u1ed9t v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. Trong b\u00e0i vi\u1ebft n\u00e0y, InterData s\u1ebd gi\u1ea3i th\u00edch c\u1eb7n k\u1ebd l\u00fd do, ch\u1ec9 ra 5 tr\u01b0\u1eddng h\u1ee3p b\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i l\u00e0m \u0111i\u1ec1u n\u00e0y, c\u00f9ng h\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1eebng b\u01b0\u1edbc.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi.jpg\" alt=\"T\u1eaft DHCP \u0111\u1ec3 l\u00e0m g\u00ec\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-30984\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi.jpg 600w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"DHCP-la-gi\"><\/span>DHCP l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/dhcp-la-gi\/\">DHCP<\/a> (Dynamic Host Configuration Protocol) l\u00e0 m\u1ed9t giao th\u1ee9c m\u1ea1ng cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb (nh\u01b0 m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i, m\u00e1y in,&#8230;) t\u1ef1 \u0111\u1ed9ng nh\u1eadn \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u00e1c th\u00f4ng tin c\u1ea5u h\u00ecnh m\u1ea1ng c\u1ea7n thi\u1ebft kh\u00e1c khi ch\u00fang k\u1ebft n\u1ed1i v\u00e0o m\u1ea1ng. Thay v\u00ec ph\u1ea3i c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng t\u1eebng thi\u1ebft b\u1ecb, DHCP Server s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1ea5p ph\u00e1t c\u00e1c \u0111\u1ecba ch\u1ec9 IP v\u00e0 th\u00f4ng tin c\u1ea5u h\u00ecnh, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd m\u1ea1ng v\u00e0 tr\u00e1nh c\u00e1c xung \u0111\u1ed9t \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/DHCP.jpg\" alt=\"DHCP\" width=\"600\" height=\"400\" class=\"aligncenter wp-image-30952\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/DHCP.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/DHCP-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-can-tat-DHCP\"><\/span>T\u1ea1i sao c\u1ea7n t\u1eaft DHCP?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c t\u1eaft DHCP kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch v\u00ec n\u00f3 s\u1ebd l\u00e0m m\u1ea5t \u0111i s\u1ef1 ti\u1ec7n l\u1ee3i c\u1ee7a vi\u1ec7c t\u1ef1 \u0111\u1ed9ng c\u1ea5u h\u00ecnh m\u1ea1ng. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c t\u1eaft DHCP c\u00f3 th\u1ec3 c\u1ea7n thi\u1ebft:<\/p>\n<ul>\n<li><strong>Qu\u1ea3n l\u00fd m\u1ea1ng l\u1edbn:<\/strong> Trong c\u00e1c m\u1ea1ng l\u1edbn, vi\u1ec7c s\u1eed d\u1ee5ng DHCP c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 qu\u1ea3n l\u00fd. Vi\u1ec7c c\u1ea5u h\u00ecnh IP t\u0129nh cho m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb quan tr\u1ecdng c\u00f3 th\u1ec3 gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 theo d\u00f5i c\u00e1c thi\u1ebft b\u1ecb n\u00e0y.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh IP t\u0129nh:<\/strong> M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb, nh\u01b0 m\u00e1y in, m\u00e1y ch\u1ee7, ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb y\u00eau c\u1ea7u \u0111\u1ecba ch\u1ec9 IP c\u1ed1 \u0111\u1ecbnh, th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh IP t\u0129nh. Vi\u1ec7c t\u1eaft DHCP tr\u00ean c\u00e1c thi\u1ebft b\u1ecb n\u00e0y v\u00e0 c\u1ea5u h\u00ecnh IP t\u0129nh s\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o ch\u00fang lu\u00f4n c\u00f3 \u0111\u1ecba ch\u1ec9 IP \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>B\u1ea3o m\u1eadt:<\/strong> Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c t\u1eaft DHCP c\u00f3 th\u1ec3 gi\u00fap t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho m\u1ea1ng b\u1eb1ng c\u00e1ch ng\u0103n ch\u1eb7n c\u00e1c thi\u1ebft b\u1ecb l\u1ea1 t\u1ef1 \u0111\u1ed9ng k\u1ebft n\u1ed1i v\u00e0 nh\u1eadn \u0111\u1ecba ch\u1ec9 IP.<\/li>\n<li><strong>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/strong> Trong qu\u00e1 tr\u00ecnh kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 m\u1ea1ng, vi\u1ec7c t\u1eaft DHCP c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh xem v\u1ea5n \u0111\u1ec1 c\u00f3 li\u00ean quan \u0111\u1ebfn DHCP hay kh\u00f4ng.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"5-Truong-hop-ban-bat-buoc-phai-tat-DHCP\"><\/span>5 Tr\u01b0\u1eddng h\u1ee3p b\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i t\u1eaft DHCP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c l\u00fd thuy\u1ebft l\u00e0 m\u1ed9t chuy\u1ec7n, \u00e1p d\u1ee5ng v\u00e0o th\u1ef1c t\u1ebf l\u1ea1i l\u00e0 m\u1ed9t chuy\u1ec7n kh\u00e1c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 5 k\u1ecbch b\u1ea3n c\u1ee5 th\u1ec3 m\u00e0 vi\u1ec7c t\u1eaft DHCP kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-01.jpg\" alt=\"T\u1eaft DHCP \u0111\u1ec3 l\u00e0m g\u00ec\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-30985\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-01.jpg 600w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-01-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Bien-router-cu-thanh-diem-phat-WiFi-Access-Point\"><\/span>1. Bi\u1ebfn router c\u0169 th\u00e0nh \u0111i\u1ec3m ph\u00e1t WiFi (Access Point)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 t\u00ecnh hu\u1ed1ng ph\u1ed5 bi\u1ebfn nh\u1ea5t. B\u1ea1n c\u00f3 m\u1ed9t chi\u1ebfc router c\u0169 v\u00e0 mu\u1ed1n t\u1eadn d\u1ee5ng \u0111\u1ec3 m\u1edf r\u1ed9ng v\u00f9ng ph\u1ee7 s\u00f3ng WiFi cho t\u1ea7ng tr\u00ean ho\u1eb7c ph\u00f2ng l\u00e0m vi\u1ec7c \u1edf xa. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n mu\u1ed1n router ph\u1ee5 ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t &#8220;c\u00e1i loa&#8221; ph\u00e1t s\u00f3ng, kh\u00f4ng ph\u1ea3i l\u00e0 &#8220;b\u1ed9 n\u00e3o&#8221; qu\u1ea3n l\u00fd m\u1ea1ng.<\/p>\n<p>Khi b\u1ea1n t\u1eaft DHCP tr\u00ean router ph\u1ee5, b\u1ea1n \u0111ang ra l\u1ec7nh cho router \u0111\u00f3 ng\u1eebng vi\u1ec7c c\u1ea5p ph\u00e1t \u0111\u1ecba ch\u1ec9 IP. Thay v\u00e0o \u0111\u00f3, n\u00f3 s\u1ebd cho ph\u00e9p modem ch\u00ednh th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c n\u00e0y. C\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u00e0o s\u00f3ng WiFi c\u1ee7a router ph\u1ee5 s\u1ebd nh\u1eadn \u0111\u1ecba ch\u1ec9 IP t\u1eeb modem ch\u00ednh, \u0111\u1ea3m b\u1ea3o ch\u00fang lu\u00f4n thu\u1ed9c c\u00f9ng m\u1ed9t l\u1edbp m\u1ea1ng v\u00e0 c\u00f3 th\u1ec3 &#8220;giao ti\u1ebfp&#8221; v\u1edbi nhau m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Cau-hinh-router-lam-Repeater-bo-lap-song\"><\/span>2. C\u1ea5u h\u00ecnh router l\u00e0m Repeater (b\u1ed9 l\u1eb7p s\u00f3ng)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ch\u1ebf \u0111\u1ed9 Repeater (b\u1ed9 l\u1eb7p s\u00f3ng) c\u00f3 ch\u1ee9c n\u0103ng thu l\u1ea1i s\u00f3ng WiFi t\u1eeb modem ch\u00ednh v\u00e0 ph\u00e1t l\u1ea1i \u1edf c\u01b0\u1eddng \u0111\u1ed9 m\u1ea1nh h\u01a1n \u0111\u1ec3 m\u1edf r\u1ed9ng v\u00f9ng ph\u1ee7. C\u01a1 ch\u1ebf n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t s\u1ef1 li\u1ec1n m\u1ea1ch tuy\u1ec7t \u0111\u1ed1i trong h\u1ec7 th\u1ed1ng m\u1ea1ng.<\/p>\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng t\u1eaft DHCP tr\u00ean thi\u1ebft b\u1ecb Repeater, n\u00f3 c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o ra m\u1ed9t d\u1ea3i IP ri\u00eang. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn m\u1ed9t v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng: thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u00e0o Repeater s\u1ebd kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y m\u00e1y in hay c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c \u0111ang k\u1ebft n\u1ed1i v\u00e0o modem ch\u00ednh. Vi\u1ec7c t\u1eaft DHCP \u0111\u1ea3m b\u1ea3o Repeater ch\u1ec9 l\u00e0 m\u1ed9t tr\u1ea1m trung chuy\u1ec3n t\u00edn hi\u1ec7u thu\u1ea7n t\u00fay.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Ket-noi-nhieu-router-qua-mang-LAN\"><\/span>3. K\u1ebft n\u1ed1i nhi\u1ec1u router qua m\u1ea1ng LAN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Gi\u1ea3 s\u1eed b\u1ea1n c\u1ea7n nhi\u1ec1u c\u1ed5ng m\u1ea1ng c\u00f3 d\u00e2y (c\u1ed5ng LAN) h\u01a1n \u1edf ph\u00f2ng kh\u00e1ch \u0111\u1ec3 k\u1ebft n\u1ed1i TV, m\u00e1y ch\u01a1i game v\u00e0 m\u00e1y t\u00ednh. B\u1ea1n s\u1eed d\u1ee5ng m\u1ed9t router ph\u1ee5 v\u00e0 n\u1ed1i d\u00e2y LAN t\u1eeb modem ch\u00ednh \u0111\u1ebfn router ph\u1ee5 n\u00e0y.<\/p>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng c\u00f3 d\u00e2y. \u0110\u1ec3 t\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb, d\u00f9 c\u1eafm v\u00e0o modem ch\u00ednh hay router ph\u1ee5, \u0111\u1ec1u thu\u1ed9c c\u00f9ng m\u1ed9t m\u1ea1ng, b\u1ea1n ph\u1ea3i t\u1eaft DHCP tr\u00ean router ph\u1ee5. N\u1ebfu kh\u00f4ng, router ph\u1ee5 s\u1ebd t\u1ea1o ra m\u1ed9t m\u1ea1ng con ri\u00eang bi\u1ec7t, c\u00f4 l\u1eadp c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi n\u00f3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-Khac-phuc-loi-%E2%80%9CIP-Address-Conflict%E2%80%9D\"><\/span>4. Kh\u1eafc ph\u1ee5c l\u1ed7i &#8220;IP Address Conflict&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 bao gi\u1edd th\u1ea5y th\u00f4ng b\u00e1o l\u1ed7i &#8220;IP Address Conflict&#8221; (Xung \u0111\u1ed9t \u0111\u1ecba ch\u1ec9 IP) tr\u00ean m\u00e1y t\u00ednh c\u1ee7a m\u00ecnh ch\u01b0a? \u0110\u00e2y l\u00e0 tri\u1ec7u ch\u1ee9ng r\u00f5 r\u00e0ng nh\u1ea5t cho th\u1ea5y c\u00f3 hai thi\u1ebft b\u1ecb trong m\u1ea1ng \u0111ang c\u1ed1 g\u1eafng s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<p>M\u1ed9t trong nh\u1eefng th\u1ee7 ph\u1ea1m h\u00e0ng \u0111\u1ea7u g\u00e2y ra l\u1ed7i n\u00e0y ch\u00ednh l\u00e0 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a hai m\u00e1y ch\u1ee7 DHCP trong c\u00f9ng m\u1ed9t m\u1ea1ng. Khi m\u1ea1ng c\u1ee7a b\u1ea1n \u0111\u1ed9t nhi\u00ean tr\u1edf n\u00ean b\u1ea5t \u1ed5n v\u00e0 xu\u1ea5t hi\u1ec7n l\u1ed7i n\u00e0y, h\u00e0nh \u0111\u1ed9ng \u0111\u1ea7u ti\u00ean b\u1ea1n n\u00ean l\u00e0m l\u00e0 ki\u1ec3m tra v\u00e0 t\u1eaft ngay t\u00ednh n\u0103ng DHCP tr\u00ean c\u00e1c router ph\u1ee5 ho\u1eb7c thi\u1ebft b\u1ecb m\u1edbi \u0111\u01b0\u1ee3c th\u00eam v\u00e0o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5-Su-dung-dia-chi-IP-tinh-cho-thiet-bi-quan-trong\"><\/span>5. S\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP t\u0129nh cho thi\u1ebft b\u1ecb quan tr\u1ecdng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb nh\u01b0 camera an ninh, m\u00e1y in m\u1ea1ng, ho\u1eb7c m\u00e1y ch\u1ee7 n\u1ed9i b\u1ed9 c\u1ea7n m\u1ed9t \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i (IP t\u0129nh) \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp ch\u00fang m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. B\u1ea1n th\u01b0\u1eddng s\u1ebd thi\u1ebft l\u1eadp c\u00e1c \u0111\u1ecba ch\u1ec9 IP n\u00e0y th\u1ee7 c\u00f4ng.<\/p>\n<p>Tuy nhi\u00ean, n\u1ebfu m\u1ed9t m\u00e1y ch\u1ee7 DHCP &#8220;tr\u00e1i ph\u00e9p&#8221; \u0111ang ho\u1ea1t \u0111\u1ed9ng, n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng &#8220;bi\u1ebft&#8221; \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 IP t\u0129nh b\u1ea1n \u0111\u00e3 \u0111\u1eb7t v\u00e0 v\u00f4 t\u00ecnh c\u1ea5p m\u1ed9t \u0111\u1ecba ch\u1ec9 tr\u00f9ng l\u1eb7p cho m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c. Vi\u1ec7c t\u1eaft h\u1ebft c\u00e1c DHCP server kh\u00f4ng c\u1ea7n thi\u1ebft gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd d\u1ea3i IP t\u0129nh c\u1ee7a m\u00ecnh m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 tr\u00e1nh xung \u0111\u1ed9t kh\u00f4ng \u0111\u00e1ng c\u00f3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-cach-tat-DHCP-chi-tiet\"><\/span>H\u01b0\u1edbng d\u1eabn c\u00e1ch t\u1eaft DHCP chi ti\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>V\u1ec1 c\u01a1 b\u1ea3n, quy tr\u00ecnh tr\u00ean c\u00e1c router l\u00e0 t\u01b0\u01a1ng t\u1ef1 nhau: \u0111\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb, t\u00ecm \u0111\u1ebfn m\u1ee5c c\u00e0i \u0111\u1eb7t m\u1ea1ng LAN (LAN Setup) ho\u1eb7c M\u1ea1ng (Network), sau \u0111\u00f3 t\u00ecm t\u00f9y ch\u1ecdn DHCP Server v\u00e0 v\u00f4 hi\u1ec7u h\u00f3a (Disable) n\u00f3 \u0111i. \u0110\u1ecba ch\u1ec9 IP \u0111\u1ec3 \u0111\u0103ng nh\u1eadp th\u01b0\u1eddng l\u00e0 <code>192.168.1.1<\/code> ho\u1eb7c <code>192.168.0.1<\/code>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-02.jpg\" alt=\"T\u1eaft DHCP \u0111\u1ec3 l\u00e0m g\u00ec\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-30986\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-02.jpg 600w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/06\/tat-dhcp-de-lam-gi-02-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-tat-DHCP-tren-router-TP-Link\"><\/span>C\u00e1ch t\u1eaft DHCP tr\u00ean router TP-Link<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Router TP-Link c\u00f3 giao di\u1ec7n r\u1ea5t ph\u1ed5 bi\u1ebfn v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng.<\/p>\n<ul>\n<li><strong>B\u01b0\u1edbc 1:<\/strong> M\u1edf tr\u00ecnh duy\u1ec7t web v\u00e0 nh\u1eadp <code>192.168.0.1<\/code> ho\u1eb7c <code>192.168.1.1<\/code> v\u00e0o thanh \u0111\u1ecba ch\u1ec9. \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00e0i kho\u1ea3n qu\u1ea3n tr\u1ecb c\u1ee7a b\u1ea1n (th\u01b0\u1eddng l\u00e0 <code>admin<\/code>\/<code>admin<\/code> n\u1ebfu ch\u01b0a \u0111\u1ed5i).<\/li>\n<li><strong>B\u01b0\u1edbc 2:<\/strong> Trong menu b\u00ean tr\u00e1i, t\u00ecm v\u00e0 nh\u1ea5p v\u00e0o m\u1ee5c <strong>DHCP<\/strong>. M\u1ed9t menu con s\u1ebd hi\u1ec7n ra.<\/li>\n<li><strong>B\u01b0\u1edbc 3:<\/strong> Ch\u1ecdn <strong>DHCP Settings<\/strong>. \u1ede m\u00e0n h\u00ecnh ch\u00ednh, b\u1ea1n s\u1ebd th\u1ea5y t\u00f9y ch\u1ecdn <strong>DHCP Server<\/strong> \u0111ang \u1edf tr\u1ea1ng th\u00e1i <strong>Enable<\/strong> (B\u1eadt). [H\u00ecnh \u1ea3nh: Giao di\u1ec7n DHCP Settings c\u1ee7a TP-Link v\u1edbi t\u00f9y ch\u1ecdn Enable \u0111\u01b0\u1ee3c ch\u1ecdn]<\/li>\n<li><strong>B\u01b0\u1edbc 4:<\/strong> Ch\u1ecdn <strong>Disable<\/strong> (T\u1eaft) v\u00e0 nh\u1ea5n n\u00fat <strong>Save<\/strong> (L\u01b0u) \u1edf ph\u00eda d\u01b0\u1edbi. Router c\u00f3 th\u1ec3 s\u1ebd y\u00eau c\u1ea7u kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111\u1ec3 \u00e1p d\u1ee5ng thay \u0111\u1ed5i.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cach-tat-DHCP-tren-router-Tenda\"><\/span>C\u00e1ch t\u1eaft DHCP tr\u00ean router Tenda<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Router Tenda c\u0169ng l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn v\u1edbi c\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh \u0111\u01a1n gi\u1ea3n.<\/p>\n<ul>\n<li><strong>B\u01b0\u1edbc 1:<\/strong> \u0110\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb c\u1ee7a Tenda, th\u01b0\u1eddng l\u00e0 <code>192.168.0.1<\/code>.<\/li>\n<li><strong>B\u01b0\u1edbc 2:<\/strong> T\u00ecm \u0111\u1ebfn m\u1ee5c <strong>Administration<\/strong> (Qu\u1ea3n tr\u1ecb) ho\u1eb7c <strong>Advanced Settings<\/strong> (C\u00e0i \u0111\u1eb7t n\u00e2ng cao) trong menu.<\/li>\n<li><strong>B\u01b0\u1edbc 3:<\/strong> Trong c\u00e1c t\u00f9y ch\u1ecdn, t\u00ecm \u0111\u1ebfn m\u1ee5c <strong>LAN Settings<\/strong> (C\u00e0i \u0111\u1eb7t LAN).<\/li>\n<li><strong>B\u01b0\u1edbc 4:<\/strong> B\u1ea1n s\u1ebd th\u1ea5y m\u1ed9t m\u1ee5c c\u00f3 t\u00ean <strong>DHCP Server<\/strong>. B\u1ecf d\u1ea5u t\u00edch \u1edf \u00f4 <strong>Enable<\/strong>. Nh\u1ea5n <strong>OK<\/strong> ho\u1eb7c <strong>Save<\/strong> \u0111\u1ec3 l\u01b0u l\u1ea1i c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cach-tat-DHCP-tren-modem-nha-mang-Viettel-FPT-VNPT\"><\/span>C\u00e1ch t\u1eaft DHCP tr\u00ean modem nh\u00e0 m\u1ea1ng (Viettel, FPT, VNPT)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng, b\u1ea1n s\u1ebd kh\u00f4ng t\u1eaft DHCP tr\u00ean modem ch\u00ednh c\u1ee7a nh\u00e0 m\u1ea1ng. B\u1ea1n ch\u1ec9 th\u1ef1c hi\u1ec7n vi\u1ec7c n\u00e0y tr\u00ean c\u00e1c router ph\u1ee5 mua th\u00eam. Tuy nhi\u00ean, n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng ph\u1ee9c t\u1ea1p h\u01a1n v\u00e0 mu\u1ed1n d\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c l\u00e0m DHCP server, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u1eaft t\u00ednh n\u0103ng n\u00e0y tr\u00ean modem ch\u00ednh theo c\u00e1c b\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bat-lai-DHCP-khi-can-Phai-lam-sao\"><\/span>B\u1eadt l\u1ea1i DHCP khi c\u1ea7n: Ph\u1ea3i l\u00e0m sao?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>N\u1ebfu b\u1ea1n c\u1ea5u h\u00ecnh sai ho\u1eb7c mu\u1ed1n \u0111\u01b0a router ph\u1ee5 tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp, b\u1ea1n c\u00f3 th\u1ec3 b\u1eadt l\u1ea1i DHCP m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. Quy tr\u00ecnh ho\u00e0n to\u00e0n ng\u01b0\u1ee3c l\u1ea1i v\u1edbi c\u00e1c b\u01b0\u1edbc tr\u00ean: \u0111\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb, t\u00ecm \u0111\u1ebfn m\u1ee5c c\u00e0i \u0111\u1eb7t DHCP Server v\u00e0 chuy\u1ec3n t\u00f9y ch\u1ecdn t\u1eeb <strong>Disable<\/strong> (T\u1eaft) v\u1ec1 <strong>Enable<\/strong> (B\u1eadt), sau \u0111\u00f3 l\u01b0u l\u1ea1i.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Giai-dap-cac-cau-hoi-thuong-gap-FAQ\"><\/span>Gi\u1ea3i \u0111\u00e1p c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 th\u1eafc m\u1eafc ph\u1ed5 bi\u1ebfn m\u00e0 \u0111\u1ed9i ng\u0169 InterData \u0111\u00e3 t\u1ed5ng h\u1ee3p l\u1ea1i \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tat-DHCP-co-lam-mat-Internet-khong\"><\/span>T\u1eaft DHCP c\u00f3 l\u00e0m m\u1ea5t Internet kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 <strong>Kh\u00f4ng<\/strong>, n\u1ebfu b\u1ea1n c\u1ea5u h\u00ecnh \u0111\u00fang. Ng\u01b0\u1ee3c l\u1ea1i, vi\u1ec7c t\u1eaft DHCP tr\u00ean router ph\u1ee5 c\u00f2n l\u00e0 b\u01b0\u1edbc c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i Internet \u1ed5n \u0111\u1ecbnh cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u1ea1ng c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf c\u00e1c xung \u0111\u1ed9t ti\u1ec1m t\u00e0ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lam-sao-de-biet-mang-co-2-DHCP-Server\"><\/span>L\u00e0m sao \u0111\u1ec3 bi\u1ebft m\u1ea1ng c\u00f3 2 DHCP Server?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra r\u1ea5t d\u1ec5 d\u00e0ng tr\u00ean m\u00e1y t\u00ednh Windows.<\/p>\n<ol>\n<li>Nh\u1ea5n t\u1ed5 h\u1ee3p ph\u00edm <code>Windows + R<\/code>, g\u00f5 <code>cmd<\/code> v\u00e0 nh\u1ea5n Enter \u0111\u1ec3 m\u1edf Command Prompt.<\/li>\n<li>G\u00f5 l\u1ec7nh sau v\u00e0 nh\u1ea5n Enter: <code>ipconfig \/all<\/code><\/li>\n<li>T\u00ecm \u0111\u1ebfn d\u00f2ng <strong>DHCP Server<\/strong>. \u0110\u1ecba ch\u1ec9 IP hi\u1ec3n th\u1ecb \u1edf \u0111\u00e2y ch\u00ednh l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a thi\u1ebft b\u1ecb \u0111ang c\u1ea5p IP cho m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n nghi ng\u1edd c\u00f3 2 DHCP server, h\u00e3y c\u1eafm d\u00e2y m\u1ea1ng v\u00e0o c\u00e1c router kh\u00e1c nhau v\u00e0 ch\u1ea1y l\u1ea1i l\u1ec7nh n\u00e0y \u0111\u1ec3 xem \u0111\u1ecba ch\u1ec9 DHCP Server c\u00f3 thay \u0111\u1ed5i kh\u00f4ng.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Co-nen-tat-DHCP-tren-modem-chinh-khong\"><\/span>C\u00f3 n\u00ean t\u1eaft DHCP tr\u00ean modem ch\u00ednh kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e2u tr\u1ea3 l\u1eddi th\u01b0\u1eddng l\u00e0 <strong>Kh\u00f4ng<\/strong>. Modem ch\u00ednh do nh\u00e0 m\u1ea1ng cung c\u1ea5p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u00e0m thi\u1ebft b\u1ecb trung t\u00e2m, qu\u1ea3n l\u00fd v\u00e0 c\u1ea5p ph\u00e1t IP cho to\u00e0n b\u1ed9 m\u1ea1ng c\u1ee7a b\u1ea1n. B\u1ea1n ch\u1ec9 n\u00ean xem x\u00e9t t\u1eaft DHCP tr\u00ean modem ch\u00ednh n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng kh\u00e1c (nh\u01b0 m\u1ed9t m\u00e1y ch\u1ee7 ri\u00eang ho\u1eb7c m\u1ed9t router cao c\u1ea5p) \u0111\u1ec3 \u0111\u1ea3m nh\u1eadn vai tr\u00f2 n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tat-DHCP-roi-nhung-van-khong-vao-duoc-mang\"><\/span>T\u1eaft DHCP r\u1ed3i nh\u01b0ng v\u1eabn kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n \u0111\u00e3 t\u1eaft DHCP tr\u00ean router ph\u1ee5 m\u00e0 v\u1eabn g\u1eb7p s\u1ef1 c\u1ed1, h\u00e3y ki\u1ec3m tra hai v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn sau:<\/p>\n<ol>\n<li><strong>C\u1eafm sai c\u1ed5ng:<\/strong> Khi bi\u1ebfn router th\u00e0nh Access Point, b\u1ea1n ph\u1ea3i c\u1eafm d\u00e2y m\u1ea1ng t\u1eeb modem ch\u00ednh v\u00e0o c\u1ed5ng <strong>LAN<\/strong> (m\u00e0u v\u00e0ng) c\u1ee7a router ph\u1ee5, kh\u00f4ng ph\u1ea3i c\u1ed5ng <strong>WAN<\/strong> (m\u00e0u xanh).<\/li>\n<li><strong>Tr\u00f9ng \u0111\u1ecba ch\u1ec9 IP c\u1ee7a router:<\/strong> H\u00e3y \u0111\u1ea3m b\u1ea3o \u0111\u1ecba ch\u1ec9 IP c\u1ee7a router ph\u1ee5 kh\u00e1c v\u1edbi modem ch\u00ednh. V\u00ed d\u1ee5, n\u1ebfu modem ch\u00ednh l\u00e0 <code>192.168.1.1<\/code>, b\u1ea1n n\u00ean \u0111\u1ed5i IP c\u1ee7a router ph\u1ee5 th\u00e0nh <code>192.168.1.2<\/code>.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111ang t\u00ecm c\u00e1ch m\u1edf r\u1ed9ng s\u00f3ng WiFi nh\u01b0ng l\u1ea1i \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn ph\u1ea3i t\u1eaft DHCP tr\u00ean router ph\u1ee5 m\u00e0 kh\u00f4ng hi\u1ec3u r\u00f5 l\u00fd do? Vi\u1ec7c t\u1eaft DHCP \u0111\u00fang c\u00e1ch ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng \u1ed5n \u0111\u1ecbnh, tr\u00e1nh xung \u0111\u1ed9t v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. Trong b\u00e0i vi\u1ebft n\u00e0y,<\/p>\n","protected":false},"author":2,"featured_media":30984,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-30982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/30982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=30982"}],"version-history":[{"count":3,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/30982\/revisions"}],"predecessor-version":[{"id":30989,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/30982\/revisions\/30989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/30984"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=30982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=30982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=30982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}