{"id":38790,"date":"2026-01-30T14:12:13","date_gmt":"2026-01-30T07:12:13","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=38790"},"modified":"2026-01-30T14:12:13","modified_gmt":"2026-01-30T07:12:13","slug":"anycast-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/anycast-la-gi\/","title":{"rendered":"Anycast L\u00e0 G\u00ec? C\u00e1ch \u0110\u1ecbnh Tuy\u1ebfn Anycast Ho\u1ea1t \u0110\u1ed9ng &#038; \u1ee8ng D\u1ee5ng"},"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\/anycast-la-gi\/#Anycast-la-gi\" >Anycast 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\/anycast-la-gi\/#Anycast-hoat-dong-nhu-the-nao\" >Anycast ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/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\/anycast-la-gi\/#So-sanh-Anycast-Unicast-Multicast-va-Broadcast\" >So s\u00e1nh Anycast, Unicast, Multicast v\u00e0 Broadcast<\/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\/anycast-la-gi\/#Unicast-1-to-1-Pho-bien-nhat-nhung-de-nghen\" >Unicast (1-to-1): Ph\u1ed5 bi\u1ebfn nh\u1ea5t nh\u01b0ng d\u1ec5 ngh\u1ebdn<\/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\/anycast-la-gi\/#Broadcast-1-to-all-Gui-cho-tat-ca-trong-mang-noi-bo\" >Broadcast (1-to-all): G\u1eedi cho t\u1ea5t c\u1ea3 trong m\u1ea1ng n\u1ed9i b\u1ed9<\/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\/anycast-la-gi\/#Multicast-1-to-many-Gui-cho-mot-nhom-doi-tuong\" >Multicast (1-to-many): G\u1eedi cho m\u1ed9t nh\u00f3m \u0111\u1ed1i t\u01b0\u1ee3ng<\/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\/anycast-la-gi\/#Anycast-1-to-nearest-Toi-uu-hoa-khoang-cach-va-hieu-suat\" >Anycast (1-to-nearest): T\u1ed1i \u01b0u h\u00f3a kho\u1ea3ng c\u00e1ch v\u00e0 hi\u1ec7u su\u1ea5t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast\" >\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng Anycast<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Uu-diem-cua-Anycast\" >\u01afu \u0111i\u1ec3m c\u1ee7a Anycast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Nhuoc-diem-cua-Anycast\" >Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Anycast<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Ung-dung-thuc-te-cua-cong-nghe-Anycast\" >\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00f4ng ngh\u1ec7 Anycast<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-DNS-Giam-thoi-gian-giai-quyet-ten-mien\" >Anycast DNS: Gi\u1ea3m th\u1eddi gian gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Content-Delivery-Network-CDN\" >Content Delivery Network (CDN)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Chong-tan-cong-DDoS-bang-Anycast\" >Ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS b\u1eb1ng Anycast<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Cach-su-dung-Anycast-trong-thuc-te\" >C\u00e1ch s\u1eed d\u1ee5ng Anycast trong th\u1ef1c t\u1ebf<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Cac-buoc-cau-hinh-may-chu-Anycast\" >C\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 Anycast<\/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\/anycast-la-gi\/#Cac-buoc-cau-hinh-bo-dinh-tuyen-cho-Anycast\" >C\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn cho Anycast<\/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\/anycast-la-gi\/#Vi-du-minh-hoa-trien-khai-Anycast\" >V\u00ed d\u1ee5 minh h\u1ecda tri\u1ec3n khai Anycast<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#FAQs-%E2%80%93-Cac-cau-hoi-thuong-gap-ve-Anycast\" >FAQs &#8211; C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Anycast<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-dung-de-lam-gi\" >Anycast d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-co-an-toan-khong\" >Anycast c\u00f3 an to\u00e0n kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-co-phu-hop-voi-website-nho-khong\" >Anycast c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi website nh\u1ecf kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-khac-Geo-DNS-nhu-the-nao\" >Anycast kh\u00e1c Geo DNS nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-co-anh-huong-SEO-khong\" >Anycast c\u00f3 \u1ea3nh h\u01b0\u1edfng SEO kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-co-phai-la-mot-dia-chi-IP-vat-ly-khong\" >Anycast c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u1eadt l\u00fd kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Anycast-va-Load-Balancing-thong-thuong-khac-nhau-nhu-the-nao\" >Anycast v\u00e0 Load Balancing th\u00f4ng th\u01b0\u1eddng kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Tai-sao-cac-dich-vu-lon-nhu-Cloudflare-hay-Google-lai-dung-Anycast\" >T\u1ea1i sao c\u00e1c d\u1ecbch v\u1ee5 l\u1edbn nh\u01b0 Cloudflare hay Google l\u1ea1i d\u00f9ng Anycast?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/#Tong-ket\" >T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<p>Trong b\u1ed1i c\u1ea3nh c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn ng\u00e0y c\u00e0ng y\u00eau c\u1ea7u <strong>t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh<\/strong>, <strong>\u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao<\/strong> v\u00e0 <strong>kh\u1ea3 n\u0103ng ph\u1ee5c v\u1ee5 ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ea7u<\/strong>, b\u00e0i to\u00e1n \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft. C\u00e1c m\u00f4 h\u00ecnh truy\u1ec1n th\u1ed1ng nh\u01b0 Unicast hay Multicast d\u1ea7n b\u1ed9c l\u1ed9 h\u1ea1n ch\u1ebf khi s\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng t\u0103ng v\u00e0 ph\u00e2n b\u1ed1 \u1edf nhi\u1ec1u khu v\u1ef1c \u0111\u1ecba l\u00fd kh\u00e1c nhau. \u0110\u00e2y c\u0169ng l\u00e0 l\u00fd do <strong>Anycast<\/strong> ra \u0111\u1eddi v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn nh\u01b0 <strong><a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">DNS<\/a> to\u00e0n c\u1ea7u, <a href=\"https:\/\/interdata.vn\/blog\/cdn-la-gi\/\">CDN<\/a>, h\u1ea1 t\u1ea7ng Cloud v\u00e0 gi\u1ea3i ph\u00e1p ch\u1ed1ng <a href=\"https:\/\/interdata.vn\/blog\/ddos-la-gi\/\">DDoS<\/a><\/strong>.<\/p>\n<p>V\u1eady <a href=\"https:\/\/interdata.vn\/blog\/anycast-la-gi\/\"><strong>Anycast l\u00e0 g\u00ec<\/strong><\/a>, c\u01a1 ch\u1ebf \u0111\u1ecbnh tuy\u1ebfn Anycast ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o v\u00e0 v\u00ec sao m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u00e1n cho nhi\u1ec1u <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> kh\u00e1c nhau nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng lu\u00f4n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u0111\u1ebfn \u0111i\u1ec3m g\u1ea7n nh\u1ea5t? B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a <strong>ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh tuy\u1ebfn Anycast<\/strong>, so s\u00e1nh Anycast v\u1edbi c\u00e1c m\u00f4 h\u00ecnh \u0111\u1ecbnh tuy\u1ebfn ph\u1ed5 bi\u1ebfn kh\u00e1c, \u0111\u1ed3ng th\u1eddi ph\u00e2n t\u00edch c\u00e1c <strong>\u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf <\/strong>gi\u00fap b\u1ea1n x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng m\u1ea1ng m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Anycast-la-gi\"><\/span>Anycast l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Anycast<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh tuy\u1ebfn m\u1ea1ng trong \u0111\u00f3 nhi\u1ec1u m\u00e1y ch\u1ee7 t\u1ea1i c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau c\u00f9ng chia s\u1ebb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t. Khi m\u1ed9t y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn IP Anycast, h\u1ec7 th\u1ed1ng \u0111\u1ecbnh tuy\u1ebfn s\u1ebd t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u h\u01b0\u1edbng d\u1eef li\u1ec7u \u0111\u1ebfn m\u00e1y ch\u1ee7 c\u00f3 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t ho\u1eb7c c\u00f3 th\u1eddi gian ph\u1ea3n h\u1ed3i ng\u1eafn nh\u1ea5t trong m\u1ea1ng l\u01b0\u1edbi.<\/p>\n<p>Kh\u00e1c v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng, kh\u00e1i ni\u1ec7m Anycast kh\u00f4ng x\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111\u00edch \u0111\u1ebfn c\u1ed1 \u0111\u1ecbnh duy nh\u1ea5t. Thay v\u00e0o \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y h\u01b0\u1edbng t\u1edbi vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a l\u1ed9 tr\u00ecnh truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u. \u0110\u1ec3 d\u1ec5 h\u00ecnh dung, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng vi\u1ec7c g\u1ecdi \u0111\u1ebfn s\u1ed1 \u0111i\u1ec7n tho\u1ea1i c\u1ea5p c\u1ee9u 115. D\u00f9 s\u1ed1 \u0111i\u1ec7n tho\u1ea1i l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n qu\u1ed1c, nh\u01b0ng cu\u1ed9c g\u1ecdi s\u1ebd \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i t\u1edbi trung t\u00e2m \u0111i\u1ec1u ph\u1ed1i g\u1ea7n nh\u1ea5t v\u1edbi v\u1ecb tr\u00ed c\u1ee7a ng\u01b0\u1eddi g\u1ecdi. \u0110\u00e2y ch\u00ednh l\u00e0 c\u00e1ch th\u1ee9c v\u1eadn h\u00e0nh c\u1ed1t l\u00f5i c\u1ee7a <strong>\u0111\u1ecbnh tuy\u1ebfn Anycast<\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38794\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anycast-la-gi.jpg\" alt=\"Anycast l\u00e0 g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anycast-la-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anycast-la-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Anycast-la-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Trong h\u1ea1 t\u1ea7ng k\u1ef9 thu\u1eadt, <strong>IP Anycast l\u00e0 g\u00ec?<\/strong> \u0110\u00e2y l\u00e0 \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c qu\u1ea3ng b\u00e1 t\u1eeb nhi\u1ec1u \u0111i\u1ec3m truy c\u1eadp (node) kh\u00e1c nhau tr\u00ean m\u1ea1ng l\u01b0\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/mang-internet\/\">Internet<\/a> th\u00f4ng qua giao th\u1ee9c BGP. K\u1ef9 thu\u1eadt Anycast cho ph\u00e9p h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng nh\u1eadn di\u1ec7n v\u1ecb tr\u00ed c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 hi\u1ec7u qu\u1ea3 nh\u1ea5t, gi\u00fap gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 t\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd th\u00f4ng tin.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Anycast-hoat-dong-nhu-the-nao\"><\/span>Anycast ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi m\u1ed9t g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn <strong>\u0111\u1ecba ch\u1ec9 IP Anycast<\/strong>, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n g\u00f3i tin \u0111\u00f3 \u0111\u1ebfn <strong>m\u00e1y ch\u1ee7 g\u1ea7n nh\u1ea5t<\/strong> trong c\u1ee5m c\u00e1c m\u00e1y ch\u1ee7 Anycast. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u01a1 ch\u1ebf \u0111\u1ecbnh tuy\u1ebfn <strong>BGP (Border Gateway Protocol)<\/strong>, c\u00f3 nhi\u1ec7m v\u1ee5 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng truy\u1ec1n t\u1ed1i \u01b0u v\u1edbi <strong>\u0111\u1ed9 tr\u1ec5 th\u1ea5p nh\u1ea5t<\/strong> t\u1ea1i th\u1eddi \u0111i\u1ec3m truy c\u1eadp.<\/p>\n<p>Nh\u1edd c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn n\u00e0y, Anycast kh\u00f4ng ch\u1ec9 gi\u00fap <strong>ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng h\u1ee3p l\u00fd<\/strong> m\u00e0 c\u00f2n g\u00f3p ph\u1ea7n <strong>c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a m\u1ea1ng<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"So-sanh-Anycast-Unicast-Multicast-va-Broadcast\"><\/span>So s\u00e1nh Anycast, Unicast, Multicast v\u00e0 Broadcast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 gi\u00e1 tr\u1ecb c\u1ee7a Anycast, c\u1ea7n \u0111\u1eb7t ph\u01b0\u01a1ng ph\u00e1p n\u00e0y trong m\u1ed1i t\u01b0\u01a1ng quan v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt \u0111\u1ecbnh tuy\u1ebfn kh\u00e1c. M\u1ed7i ph\u01b0\u01a1ng ph\u00e1p c\u00f3 m\u1ed9t c\u00e1ch th\u1ee9c ph\u00e2n ph\u1ed1i g\u00f3i tin (packet) ri\u00eang bi\u1ec7t, ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Unicast-1-to-1-Pho-bien-nhat-nhung-de-nghen\"><\/span>Unicast (1-to-1): Ph\u1ed5 bi\u1ebfn nh\u1ea5t nh\u01b0ng d\u1ec5 ngh\u1ebdn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Unicast l\u00e0 ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n tin ph\u1ed5 bi\u1ebfn nh\u1ea5t, n\u01a1i m\u1ed9t g\u00f3i tin \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb m\u1ed9t ngu\u1ed3n duy nh\u1ea5t \u0111\u1ebfn m\u1ed9t \u0111\u00edch duy nh\u1ea5t th\u00f4ng qua m\u1ed9t \u0111\u1ecba ch\u1ec9 IP ri\u00eang bi\u1ec7t.<\/p>\n<p>Trong m\u00f4 h\u00ecnh n\u00e0y, n\u1ebfu h\u00e0ng tri\u1ec7u ng\u01b0\u1eddi d\u00f9ng c\u00f9ng truy c\u1eadp v\u00e0o m\u1ed9t \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 t\u1ea1i M\u1ef9, t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u0111\u1ec1u ph\u1ea3i b\u0103ng qua \u0111\u1ea1i d\u01b0\u01a1ng \u0111\u1ec3 t\u1edbi \u0111\u00edch. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i (<a href=\"https:\/\/interdata.vn\/blog\/bottleneck-la-gi\/\">bottleneck<\/a>) v\u00e0 \u0111\u1ed9 tr\u1ec5 cao \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u1edf xa. <strong>Unicast l\u00e0 g\u00ec<\/strong>? \u0110\u00f3 l\u00e0 s\u1ef1 k\u1ebft n\u1ed1i \u0111\u01a1n l\u1ebb, tr\u1ef1c ti\u1ebfp nh\u01b0ng thi\u1ebfu linh ho\u1ea1t khi quy m\u00f4 ng\u01b0\u1eddi d\u00f9ng t\u0103ng l\u1edbn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Broadcast-1-to-all-Gui-cho-tat-ca-trong-mang-noi-bo\"><\/span>Broadcast (1-to-all): G\u1eedi cho t\u1ea5t c\u1ea3 trong m\u1ea1ng n\u1ed9i b\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Broadcast l\u00e0 k\u1ef9 thu\u1eadt g\u1eedi g\u00f3i tin t\u1eeb m\u1ed9t ngu\u1ed3n \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t ph\u00e2n \u0111o\u1ea1n m\u1ea1ng (subnet). Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c giao d\u1ecbch nh\u01b0 t\u00ecm ki\u1ebfm <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-mac-la-gi\/\">\u0111\u1ecba ch\u1ec9 MAC<\/a> (ARP) ho\u1eb7c c\u1ea5p ph\u00e1t IP t\u1ef1 \u0111\u1ed9ng (<a href=\"https:\/\/interdata.vn\/blog\/dhcp-la-gi\/\">DHCP<\/a>). Tuy nhi\u00ean, Broadcast kh\u00f4ng th\u1ec3 truy\u1ec1n qua c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn Internet v\u00ec s\u1ebd g\u00e2y ra t\u00ecnh tr\u1ea1ng b\u00e3o tin (broadcast storm), l\u00e0m t\u00ea li\u1ec7t m\u1ea1ng di\u1ec7n r\u1ed9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Multicast-1-to-many-Gui-cho-mot-nhom-doi-tuong\"><\/span>Multicast (1-to-many): G\u1eedi cho m\u1ed9t nh\u00f3m \u0111\u1ed1i t\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Multicast cho ph\u00e9p m\u1ed9t ngu\u1ed3n g\u1eedi g\u00f3i tin \u0111\u1ebfn m\u1ed9t nh\u00f3m c\u00e1c thi\u1ebft b\u1ecb \u0111\u00edch \u0111\u00e3 \u0111\u0103ng k\u00fd nh\u1eadn th\u00f4ng tin. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng th\u1ea5y trong c\u00e1c d\u1ecbch v\u1ee5 truy\u1ec1n h\u00ecnh tr\u1ef1c ti\u1ebfp (IPTV) ho\u1eb7c h\u1ecdp tr\u1ef1c tuy\u1ebfn, gi\u00fap ti\u1ebft ki\u1ec7m <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> v\u00ec d\u1eef li\u1ec7u ch\u1ec9 \u0111\u01b0\u1ee3c sao ch\u00e9p khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-1-to-nearest-Toi-uu-hoa-khoang-cach-va-hieu-suat\"><\/span>Anycast (1-to-nearest): T\u1ed1i \u01b0u h\u00f3a kho\u1ea3ng c\u00e1ch v\u00e0 hi\u1ec7u su\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>So v\u1edbi ba ph\u01b0\u01a1ng ph\u00e1p tr\u00ean, Anycast n\u1ed5i b\u1eadt nh\u1edd kh\u1ea3 n\u0103ng &#8220;ch\u1ecdn l\u1ecdc th\u00f4ng minh&#8221;. Thay v\u00ec g\u1eedi cho m\u1ed9t ng\u01b0\u1eddi (Unicast), t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi (Broadcast) hay m\u1ed9t nh\u00f3m (Multicast), Anycast g\u1eedi g\u00f3i tin \u0111\u1ebfn &#8220;ng\u01b0\u1eddi g\u1ea7n nh\u1ea5t&#8221;.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38795\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/So-sanh-Anycast-Unicast-Multicast-va-Broadcast.jpg\" alt=\"So s\u00e1nh Anycast, Unicast, Multicast v\u00e0 Broadcast\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/So-sanh-Anycast-Unicast-Multicast-va-Broadcast.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/So-sanh-Anycast-Unicast-Multicast-va-Broadcast-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/So-sanh-Anycast-Unicast-Multicast-va-Broadcast-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng <strong>so s\u00e1nh Anycast v\u00e0 Unicast<\/strong>, Multicast v\u00e0 Broadcast d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial,Helvetica,sans-serif; font-size: 14px; box-shadow: 0 4px 12px rgba(0,0,0,0.08);\">\n<thead>\n<tr style=\"background: linear-gradient(90deg,#0C40F4,#077FFA,#0497FC); color: #ffffff;\">\n<th style=\"padding: 12px; border: 1px solid #e5e7eb; text-align: left;\">Ti\u00eau ch\u00ed<\/th>\n<th style=\"padding: 12px; border: 1px solid #e5e7eb; text-align: center;\">Unicast<\/th>\n<th style=\"padding: 12px; border: 1px solid #e5e7eb; text-align: center;\">Broadcast<\/th>\n<th style=\"padding: 12px; border: 1px solid #e5e7eb; text-align: center;\">Multicast<\/th>\n<th style=\"padding: 12px; border: 1px solid #e5e7eb; text-align: center;\">Anycast<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f9fbff;\">\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600;\">T\u1ef7 l\u1ec7 truy\u1ec1n<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">1:1<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">1:All<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">1:Many<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">1:Nearest<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600;\">\u0110\u1ecba ch\u1ec9 \u0111\u00edch<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Duy nh\u1ea5t<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">\u0110\u1ecba ch\u1ec9 Broadcast<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">\u0110\u1ecba ch\u1ec9 nh\u00f3m<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">\u0110\u1ecba ch\u1ec9 d\u00f9ng chung<\/td>\n<\/tr>\n<tr style=\"background: #f9fbff;\">\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600;\">Ph\u1ea1m vi<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">To\u00e0n m\u1ea1ng<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">M\u1ea1ng c\u1ee5c b\u1ed9<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Nh\u00f3m c\u1ee5 th\u1ec3<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">To\u00e0n m\u1ea1ng<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600;\">\u0110\u1ed9 tr\u1ec5<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Ph\u1ee5 thu\u1ed9c kho\u1ea3ng c\u00e1ch<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Th\u1ea5p (c\u1ee5c b\u1ed9)<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Trung b\u00ecnh<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Th\u1ea5p nh\u1ea5t<\/td>\n<\/tr>\n<tr style=\"background: #f9fbff;\">\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; font-weight: 600;\">\u1ee8ng d\u1ee5ng<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">Web, Email<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">DHCP, ARP<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">IPTV, Video<\/td>\n<td style=\"padding: 10px; border: 1px solid #e5e7eb; text-align: center;\">DNS, CDN, DDoS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Vi\u1ec7c ph\u00e2n bi\u1ec7t Anycast Multicast v\u00e0 Broadcast gi\u00fap c\u00e1c k\u1ef9 s\u01b0 h\u1ea1 t\u1ea7ng t\u1ea1i InterData l\u1ef1a ch\u1ecdn \u0111\u00fang gi\u1ea3i ph\u00e1p cho t\u1eebng nhu c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng, \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng cao nh\u1ea5t cho d\u1ecbch v\u1ee5.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast\"><\/span>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng Anycast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u1ea5t k\u1ef3 c\u00f4ng ngh\u1ec7 n\u00e0o c\u0169ng c\u00f3 hai m\u1eb7t. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Anycast l\u00e0 g\u00ec s\u1ebd gi\u00fap doanh nghi\u1ec7p t\u1ed1i \u01b0u h\u00f3a ngu\u1ed3n l\u1ef1c \u0111\u1ea7u t\u01b0.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu-diem-cua-Anycast\"><\/span>\u01afu \u0111i\u1ec3m c\u1ee7a Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi \u00e1p d\u1ee5ng Anycast v\u00e0o qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i DNS, gi\u1ea3i ph\u00e1p n\u00e0y mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng, c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n<ul>\n<li><strong>Gi\u1ea3m <a href=\"https:\/\/interdata.vn\/blog\/latency-la-gi\/\">Latency<\/a> m\u1ea1ng:<\/strong> \u0110\u00e2y l\u00e0 \u01b0u \u0111i\u1ec3m l\u1edbn nh\u1ea5t. Vi\u1ec7c r\u00fat ng\u1eafn kho\u1ea3ng c\u00e1ch v\u1eadt l\u00fd gi\u1eefa ngu\u1ed3n v\u00e0 \u0111\u00edch gi\u00fap gi\u1ea3m th\u1eddi gian ph\u1ea3n h\u1ed3i t\u1eeb m\u1ee9c h\u00e0ng tr\u0103m mili gi\u00e2y v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 latency.<\/li>\n<li><strong>T\u00ednh s\u1eb5n s\u00e0ng cao (<a href=\"https:\/\/interdata.vn\/blog\/high-availability-la-gi\/\">High Availability<\/a>):<\/strong> N\u1ebfu m\u1ed9t m\u00e1y ch\u1ee7 trong m\u1ea1ng l\u01b0\u1edbi Anycast g\u1eb7p s\u1ef1 c\u1ed1, giao th\u1ee9c BGP s\u1ebd t\u1ef1 \u0111\u1ed9ng lo\u1ea1i b\u1ecf l\u1ed9 tr\u00ecnh \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00f3. L\u01b0u l\u01b0\u1ee3ng s\u1ebd ngay l\u1eadp t\u1ee9c \u0111\u01b0\u1ee3c chuy\u1ec3n sang m\u00e1y ch\u1ee7 g\u1ea7n nh\u1ea5t c\u00f2n ho\u1ea1t \u0111\u1ed9ng m\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng h\u1ec1 nh\u1eadn ra s\u1ef1 gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>C\u00e2n b\u1eb1ng t\u1ea3i Anycast t\u1ef1 nhi\u00ean:<\/strong> L\u01b0u l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 d\u1ef1a tr\u00ean v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, gi\u00fap d\u00e0n \u0111\u1ec1u \u00e1p l\u1ef1c cho c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/data-center-la-gi\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a> kh\u00e1c nhau.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i t\u1ed1t:<\/strong> H\u1ec7 th\u1ed1ng kh\u00f4ng c\u00f3 &#8220;\u0111i\u1ec3m ch\u1ebft duy nh\u1ea5t&#8221; (Single Point of Failure).<\/li>\n<li>Kh\u00f4ng y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m \u0111\u1eb7c bi\u1ec7t tr\u00ean client, server ho\u1eb7c router.<\/li>\n<li>Kh\u00f4ng g\u00e2y \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n t\u1ea1i, ch\u1ec9 t\u1eadn d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n s\u1eb5n c\u00f3.<\/li>\n<li><strong>Ph\u00e2n t\u00e1n r\u1ee7i ro v\u00e0 gi\u1ea3m nguy c\u01a1 DoS<\/strong>: h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean nhi\u1ec1u ISP kh\u00e1c nhau, cho ph\u00e9p linh ho\u1ea1t chuy\u1ec3n h\u01b0\u1edbng traffic khi m\u1ed9t ISP g\u1eb7p s\u1ef1 c\u1ed1.<\/li>\n<\/ul>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38796\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast.jpg\" alt=\"\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng Anycast\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Uu-diem-va-nhuoc-diem-khi-su-dung-Anycast-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"Nhuoc-diem-cua-Anycast\"><\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Chi ph\u00ed tri\u1ec3n khai cao:<\/strong> Vi\u1ec7c thi\u1ebft l\u1eadp m\u1ea1ng Anycast \u0111\u00f2i h\u1ecfi s\u1edf h\u1eefu d\u1ea3i IP ri\u00eang (PI Space), s\u1ed1 hi\u1ec7u m\u1ea1ng t\u1ef1 tr\u1ecb (ASN) v\u00e0 h\u1ea1 t\u1ea7ng server \u1edf nhi\u1ec1u v\u1ecb tr\u00ed.<\/li>\n<li><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p trong c\u1ea5u h\u00ecnh:<\/strong> Qu\u1ea3n tr\u1ecb b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn BGP \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n s\u00e2u v\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p v\u1edbi nhi\u1ec1u nh\u00e0 m\u1ea1ng l\u1edbn.<\/li>\n<li><strong>Kh\u00f3 <a href=\"https:\/\/interdata.vn\/blog\/wordpress-debug-la-gi\/\">debug<\/a>:<\/strong> Vi\u1ec7c ki\u1ec3m tra xem ng\u01b0\u1eddi d\u00f9ng \u0111ang th\u1ef1c s\u1ef1 k\u1ebft n\u1ed1i \u0111\u1ebfn node n\u00e0o c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n v\u00ec k\u1ebft qu\u1ea3 thay \u0111\u1ed5i t\u00f9y theo v\u1ecb tr\u00ed \u0111\u1ee9ng ki\u1ec3m tra.<\/li>\n<li><strong>Kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi Session Stateful:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u duy tr\u00ec phi\u00ean l\u00e0m vi\u1ec7c li\u00ean t\u1ee5c (nh\u01b0 chuy\u1ec3n kho\u1ea3n ng\u00e2n h\u00e0ng, gi\u1ecf h\u00e0ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ph\u1ee9c t\u1ea1p) c\u00f3 th\u1ec3 g\u1eb7p r\u1ee7i ro n\u1ebfu \u0111\u01b0\u1eddng \u0111i \u0111\u1ecbnh tuy\u1ebfn b\u1ecb thay \u0111\u1ed5i gi\u1eefa ch\u1eebng (route flapping).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-thuc-te-cua-cong-nghe-Anycast\"><\/span>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00f4ng ngh\u1ec7 Anycast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh tuy\u1ebfn Anycast kh\u00f4ng c\u00f2n l\u00e0 kh\u00e1i ni\u1ec7m xa l\u1ea1 m\u00e0 hi\u1ec7n \u0111ang hi\u1ec7n h\u1eefu trong h\u1ea7u h\u1ebft c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u1ef1c tuy\u1ebfn h\u00e0ng ng\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-DNS-Giam-thoi-gian-giai-quyet-ten-mien\"><\/span>Anycast DNS: Gi\u1ea3m th\u1eddi gian gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS l\u00e0 \u1ee9ng d\u1ee5ng th\u00e0nh c\u00f4ng nh\u1ea5t c\u1ee7a Anycast. Khi b\u1ea1n nh\u1eadp m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/domain-la-gi\/\">t\u00ean mi\u1ec1n<\/a>, tr\u00ecnh duy\u1ec7t c\u1ea7n h\u1ecfi m\u00e1y ch\u1ee7 DNS \u0111\u1ec3 l\u1ea5y \u0111\u1ecba ch\u1ec9 IP. N\u1ebfu s\u1eed d\u1ee5ng <strong>Anycast DNS l\u00e0 g\u00ec<\/strong>, y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (lookup time) s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi t\u1edbi m\u00e1y ch\u1ee7 DNS g\u1ea7n b\u1ea1n nh\u1ea5t.<\/p>\n<p>V\u00ed d\u1ee5, d\u1ecbch v\u1ee5 Google Public DNS (8.8.8.8) ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/cloudflare-la-gi\/\">Cloudflare<\/a> (1.1.1.1) s\u1eed d\u1ee5ng Anycast \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng \u1edf b\u1ea5t k\u1ef3 \u0111\u00e2u tr\u00ean th\u1ebf gi\u1edbi c\u0169ng nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i DNS ch\u1ec9 trong v\u00e0i miligi\u00e2y. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i <a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a> ngay t\u1eeb b\u01b0\u1edbc kh\u1edfi \u0111\u1ea7u.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38797\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Ung-dung-thuc-te-cua-cong-nghe-Anycast.jpg\" alt=\"\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00f4ng ngh\u1ec7 Anycast\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Ung-dung-thuc-te-cua-cong-nghe-Anycast.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Ung-dung-thuc-te-cua-cong-nghe-Anycast-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Ung-dung-thuc-te-cua-cong-nghe-Anycast-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Content-Delivery-Network-CDN\"><\/span>Content Delivery Network (CDN)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>CDN s\u1eed d\u1ee5ng Anycast l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a truy\u1ec1n t\u1ea3i n\u1ed9i dung hi\u1ec7n \u0111\u1ea1i. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP Anycast cho c\u00e1c node l\u01b0u tr\u1eef \u0111\u1ec7m (cache), n\u1ed9i dung h\u00ecnh \u1ea3nh, video s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i t\u1eeb m\u00e1y ch\u1ee7 s\u00e1t c\u1ea1nh ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 (latency) m\u00e0 c\u00f2n gi\u00fap ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng qu\u1ed1c t\u1ebf cho c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chong-tan-cong-DDoS-bang-Anycast\"><\/span>Ch\u1ed1ng t\u1ea5n c\u00f4ng DDoS b\u1eb1ng Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u1ea3 n\u0103ng <strong>ch\u1ed1ng DDoS b\u1eb1ng Anycast<\/strong> d\u1ef1a tr\u00ean nguy\u00ean l\u00fd &#8220;chia \u0111\u1ec3 tr\u1ecb&#8221;. Trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS), h\u00e0ng tri\u1ec7u thi\u1ebft b\u1ecb ma (<a href=\"https:\/\/interdata.vn\/blog\/botnet-la-gi\/\">botnet<\/a>) s\u1ebd g\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp kh\u1ed5ng l\u1ed3 nh\u1eb1m l\u00e0m s\u1eadp m\u00e1y ch\u1ee7.<\/p>\n<p>N\u1ebfu s\u1eed d\u1ee5ng Unicast, to\u00e0n b\u1ed9 l\u01b0u l\u01b0\u1ee3ng n\u00e0y s\u1ebd t\u1eadp trung v\u00e0o m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t, g\u00e2y t\u00ea li\u1ec7t h\u1ec7 th\u1ed1ng. V\u1edbi Anycast, l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng s\u1ebd b\u1ecb ph\u00e2n t\u00e1n ra nhi\u1ec1u node kh\u00e1c nhau tr\u00ean to\u00e0n c\u1ea7u. M\u1ed7i node ch\u1ec9 ph\u1ea3i ch\u1ecbu m\u1ed9t ph\u1ea7n nh\u1ecf \u00e1p l\u1ef1c, gi\u00fap h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3 v\u1eabn \u0111\u1ee9ng v\u1eefng. \u0110\u00e2y l\u00e0 l\u1edbp ph\u00f2ng th\u1ee7 th\u1ee5 \u0111\u1ed9ng nh\u01b0ng c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 m\u00e0 <strong>InterData<\/strong> lu\u00f4n khuy\u1ebfn ngh\u1ecb cho c\u00e1c doanh nghi\u1ec7p c\u00f3 l\u01b0u l\u01b0\u1ee3ng l\u1edbn.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-su-dung-Anycast-trong-thuc-te\"><\/span>C\u00e1ch s\u1eed d\u1ee5ng Anycast trong th\u1ef1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 tri\u1ec3n khai Anycast, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh c\u00e1c <strong>m\u00e1y ch\u1ee7 Anycast s\u1eed d\u1ee5ng chung m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u1ed5ng<\/strong>, \u0111\u1ed3ng th\u1eddi thi\u1ebft l\u1eadp b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP Anycast n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cac-buoc-cau-hinh-may-chu-Anycast\"><\/span>C\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 Anycast, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ul>\n<li>C\u00e0i \u0111\u1eb7t <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh\/\">h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> c\u00f3 h\u1ed7 tr\u1ee3 Anycast.<\/li>\n<li>C\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 s\u1eed d\u1ee5ng <strong>c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u1ed5ng<\/strong>.<\/li>\n<li>Kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y ch\u1ee7 \u0111\u1ec3 \u00e1p d\u1ee5ng c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cac-buoc-cau-hinh-bo-dinh-tuyen-cho-Anycast\"><\/span>C\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn cho Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u00f3 th\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP Anycast, b\u1ea1n c\u1ea7n:<\/p>\n<ul>\n<li>Truy c\u1eadp v\u00e0o giao di\u1ec7n qu\u1ea3n tr\u1ecb web c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/li>\n<li>T\u00ecm \u0111\u1ebfn m\u1ee5c ho\u1eb7c tab <strong>\u201c\u0110\u1ecbnh tuy\u1ebfn\u201d<\/strong>.<\/li>\n<li>Th\u00eam m\u1ed9t tuy\u1ebfn m\u1edbi v\u1edbi <strong>\u0111\u1ecba ch\u1ec9 IP Anycast<\/strong> l\u00e0m \u0111\u1ecba ch\u1ec9 \u0111\u00edch v\u00e0 <strong>c\u1ed5ng Anycast<\/strong> l\u00e0m c\u1ed5ng k\u1ebft n\u1ed1i.<\/li>\n<li>L\u01b0u l\u1ea1i c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Vi-du-minh-hoa-trien-khai-Anycast\"><\/span>V\u00ed d\u1ee5 minh h\u1ecda tri\u1ec3n khai Anycast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Gi\u1ea3 s\u1eed b\u1ea1n c\u00f3 <strong>ba m\u00e1y ch\u1ee7 Anycast<\/strong> v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 IP l\u1ea7n l\u01b0\u1ee3t l\u00e0 <strong>192.168.1.10, 192.168.1.11 v\u00e0 192.168.1.12<\/strong>, v\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng Anycast \u0111\u1ec3 <strong>c\u00e2n b\u1eb1ng t\u1ea3i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cho m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a><\/strong>.<\/p>\n<p>\u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y, b\u1ea1n c\u1ea7n:<\/p>\n<ul>\n<li>C\u00e0i \u0111\u1eb7t h\u1ec7 \u0111i\u1ec1u h\u00e0nh h\u1ed7 tr\u1ee3 Anycast tr\u00ean c\u1ea3 ba m\u00e1y ch\u1ee7.<\/li>\n<li>Tr\u00ean m\u1ed7i m\u00e1y ch\u1ee7, c\u1ea5u h\u00ecnh s\u1eed d\u1ee5ng <strong>chung m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u1ed5ng<\/strong>, trong v\u00ed d\u1ee5 n\u00e0y l\u00e0 <strong>192.168.1.10:80<\/strong>.<\/li>\n<li>Kh\u1edfi \u0111\u1ed9ng l\u1ea1i c\u00e1c m\u00e1y ch\u1ee7.<\/li>\n<li>Ti\u1ebfp theo, truy c\u1eadp giao di\u1ec7n qu\u1ea3n tr\u1ecb c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, v\u00e0o m\u1ee5c <strong>\u201c\u0110\u1ecbnh tuy\u1ebfn\u201d<\/strong>, v\u00e0 th\u00eam m\u1ed9t tuy\u1ebfn m\u1edbi v\u1edbi <strong>\u0111\u1ecba ch\u1ec9 IP \u0111\u00edch l\u00e0 192.168.1.10<\/strong> c\u00f9ng <strong>c\u1ed5ng 80<\/strong>.<\/li>\n<li>L\u01b0u l\u1ea1i c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<p>Sau khi ho\u00e0n t\u1ea5t, m\u1ed7i khi c\u00f3 thi\u1ebft b\u1ecb g\u1eedi y\u00eau c\u1ea7u truy c\u1eadp website, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn s\u1ebd t\u1ef1 \u0111\u1ed9ng <strong>chuy\u1ec3n y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 Anycast g\u1ea7n nh\u1ea5t<\/strong>. M\u00e1y ch\u1ee7 n\u00e0y s\u1ebd x\u1eed l\u00fd y\u00eau c\u1ea7u v\u00e0 g\u1eedi ph\u1ea3n h\u1ed3i l\u1ea1i cho client.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs-%E2%80%93-Cac-cau-hoi-thuong-gap-ve-Anycast\"><\/span>FAQs &#8211; C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Anycast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-dung-de-lam-gi\"><\/span>Anycast d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh tuy\u1ebfn n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 truy c\u1eadp Internet, t\u0103ng c\u01b0\u1eddng t\u00ednh \u1ed5n \u0111\u1ecbnh cho c\u00e1c d\u1ecbch v\u1ee5 quan tr\u1ecdng v\u00e0 b\u1ea3o v\u1ec7 h\u1ea1 t\u1ea7ng tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng quy m\u00f4 l\u1edbn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-co-an-toan-khong\"><\/span>Anycast c\u00f3 an to\u00e0n kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1ec1 c\u01a1 b\u1ea3n, Anycast t\u0103ng t\u00ednh an to\u00e0n b\u1eb1ng c\u00e1ch ph\u00e2n t\u00e1n l\u01b0u l\u01b0\u1ee3ng. Tuy nhi\u00ean, n\u1ebfu c\u1ea5u h\u00ecnh BGP kh\u00f4ng ch\u00ednh x\u00e1c, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1ed1i m\u1eb7t v\u1edbi nguy c\u01a1 b\u1ecb chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u h\u01b0\u1edbng (BGP Hijacking). Vi\u1ec7c h\u1ee3p t\u00e1c v\u1edbi c\u00e1c \u0111\u1ed1i t\u00e1c h\u1ea1 t\u1ea7ng uy t\u00edn nh\u01b0 <strong>InterData<\/strong> gi\u00fap gi\u1ea3m thi\u1ec3u r\u1ee7i ro n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-co-phu-hop-voi-website-nho-khong\"><\/span>Anycast c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi website nh\u1ecf kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c website nh\u1ecf c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp c\u1ee5c b\u1ed9, Anycast c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t s\u1ef1 \u0111\u1ea7u t\u01b0 qu\u00e1 m\u1ee9c c\u1ea7n thi\u1ebft. Tuy nhi\u00ean, n\u1ebfu website c\u1ee7a b\u1ea1n b\u1eaft \u0111\u1ea7u c\u00f3 t\u1ec7p kh\u00e1ch h\u00e0ng t\u1eeb nhi\u1ec1u khu v\u1ef1c ho\u1eb7c th\u01b0\u1eddng xuy\u00ean b\u1ecb t\u1ea5n c\u00f4ng ph\u00e1 ho\u1ea1i, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 Anycast (nh\u01b0 Cloudflare ho\u1eb7c DNS chuy\u00ean nghi\u1ec7p) l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-khac-Geo-DNS-nhu-the-nao\"><\/span>Anycast kh\u00e1c Geo DNS nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/interdata.vn\/blog\/geo-generative-engine-optimization\/\">Geo<\/a> DNS d\u1ef1a tr\u00ean ph\u1ea7n m\u1ec1m \u0111\u1ec3 tr\u1ea3 v\u1ec1 IP m\u00e1y ch\u1ee7 g\u1ea7n nh\u1ea5t theo v\u1ecb tr\u00ed c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. Trong khi \u0111\u00f3, Anycast d\u1ef1a tr\u00ean ph\u1ea7n c\u1ee9ng v\u00e0 giao th\u1ee9c m\u1ea1ng m\u1ea1ng (BGP) \u0111\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng. Anycast th\u01b0\u1eddng ph\u1ea3n h\u1ed3i nhanh h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n \u1edf c\u1ea5p \u0111\u1ed9 h\u1ea1 t\u1ea7ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-co-anh-huong-SEO-khong\"><\/span>Anycast c\u00f3 \u1ea3nh h\u01b0\u1edfng SEO kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3, nh\u01b0ng theo h\u01b0\u1edbng t\u00edch c\u1ef1c. T\u1ed1c \u0111\u1ed9 t\u1ea3i trang (Page Speed) l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong <a href=\"https:\/\/interdata.vn\/blog\/thuat-toan-algorithm\/\">thu\u1eadt to\u00e1n<\/a> x\u1ebfp h\u1ea1ng c\u1ee7a Google. Vi\u1ec7c gi\u1ea3m latency th\u00f4ng qua Anycast gi\u00e1n ti\u1ebfp gi\u00fap c\u1ea3i thi\u1ec7n \u0111i\u1ec3m s\u1ed1 <a href=\"https:\/\/interdata.vn\/blog\/seo-la-gi\/\">SEO<\/a> v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-co-phai-la-mot-dia-chi-IP-vat-ly-khong\"><\/span>Anycast c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 IP v\u1eadt l\u00fd kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng. M\u1ed9t \u0111\u1ecba ch\u1ec9 IP Anycast l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 logic \u0111\u01b0\u1ee3c g\u00e1n cho nhi\u1ec1u giao di\u1ec7n m\u1ea1ng v\u1eadt l\u00fd kh\u00e1c nhau tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 kh\u00e1c nhau.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anycast-va-Load-Balancing-thong-thuong-khac-nhau-nhu-the-nao\"><\/span>Anycast v\u00e0 Load Balancing th\u00f4ng th\u01b0\u1eddng kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/interdata.vn\/blog\/load-balancing\/\">Load Balancing<\/a> (C\u00e2n b\u1eb1ng t\u1ea3i) th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng \u1ee9ng d\u1ee5ng ho\u1eb7c t\u1ea7ng v\u1eadn chuy\u1ec3n t\u1ea1i m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u \u0111\u01a1n l\u1ebb. Anycast ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7ng m\u1ea1ng v\u00e0 \u0111i\u1ec1u h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u tr\u00ean ph\u1ea1m vi to\u00e0n c\u1ea7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai-sao-cac-dich-vu-lon-nhu-Cloudflare-hay-Google-lai-dung-Anycast\"><\/span>T\u1ea1i sao c\u00e1c d\u1ecbch v\u1ee5 l\u1edbn nh\u01b0 Cloudflare hay Google l\u1ea1i d\u00f9ng Anycast?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u00ec h\u1ecd c\u1ea7n ph\u1ee5c v\u1ee5 h\u00e0ng t\u1ef7 ng\u01b0\u1eddi d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh nh\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i cao nh\u1ea5t. Anycast l\u00e0 c\u00f4ng ngh\u1ec7 duy nh\u1ea5t \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c quy m\u00f4 n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong-ket\"><\/span>T\u1ed5ng k\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Qua nh\u1eefng ph\u00e2n t\u00edch chi ti\u1ebft, c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng <strong>\u0111\u1ecbnh tuy\u1ebfn Anycast<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng c\u1ed9t tr\u1ee5 v\u1eefng ch\u1eafc nh\u1ea5t c\u1ee7a h\u1ea1 t\u1ea7ng Internet to\u00e0n c\u1ea7u. B\u1eb1ng c\u00e1ch gi\u1ea3i quy\u1ebft b\u00e0i to\u00e1n v\u1ec1 kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh s\u1eb5n s\u00e0ng, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y mang l\u1ea1i tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0 h\u01a1n cho ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i v\u00e0 s\u1ef1 an t\u00e2m cho ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb.<\/p>\n<p>Vi\u1ec7c \u00e1p d\u1ee5ng Anycast n\u00ean d\u1ef1a tr\u00ean nhu c\u1ea7u th\u1ef1c t\u1ebf v\u1ec1 quy m\u00f4 v\u00e0 m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng c\u1ee7a d\u1ecbch v\u1ee5. V\u1edbi c\u00e1c doanh nghi\u1ec7p \u0111ang h\u01b0\u1edbng t\u1edbi s\u1ef1 chuy\u00ean nghi\u1ec7p v\u00e0 \u1ed5n \u0111\u1ecbnh t\u1ed1i \u0111a, Anycast kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn k\u1ef9 thu\u1eadt, m\u00e0 l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 cho hi\u1ec7u su\u1ea5t b\u1ec1n v\u1eefng. <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong> <\/a>lu\u00f4n s\u1eb5n s\u00e0ng \u0111\u1ed3ng h\u00e0nh c\u00f9ng b\u1ea1n trong vi\u1ec7c t\u01b0 v\u1ea5n v\u00e0 tri\u1ec3n khai c\u00e1c gi\u1ea3i ph\u00e1p h\u1ea1 t\u1ea7ng t\u1ed1i \u01b0u nh\u1ea5t, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n lu\u00f4n v\u1eadn h\u00e0nh v\u1edbi hi\u1ec7u su\u1ea5t \u0111\u1ec9nh cao.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong b\u1ed1i c\u1ea3nh c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn ng\u00e0y c\u00e0ng y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c v\u1ee5 ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ea7u, b\u00e0i to\u00e1n \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft. C\u00e1c m\u00f4 h\u00ecnh truy\u1ec1n th\u1ed1ng nh\u01b0 Unicast<\/p>\n","protected":false},"author":11,"featured_media":38798,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-38790","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\/38790","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=38790"}],"version-history":[{"count":4,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38790\/revisions"}],"predecessor-version":[{"id":38799,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38790\/revisions\/38799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/38798"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=38790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=38790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=38790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}