{"id":18230,"date":"2021-01-19T10:39:41","date_gmt":"2021-01-19T03:39:41","guid":{"rendered":"https:\/\/speed.family\/?p=18230"},"modified":"2023-07-24T03:44:18","modified_gmt":"2023-07-23T20:44:18","slug":"anycast-la-gi","status":"publish","type":"post","link":"https:\/\/kiencang.net\/anycast-la-gi\/","title":{"rendered":"Anycast l\u00e0 g\u00ec &#038; L\u00e0m th\u1ebf n\u00e0o m\u1ea1ng CDN c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cho c\u00e1c m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o website c\u1ee7a b\u1ea1n kh\u00f4ng qu\u00e1 t\u1ea3i, ngay c\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p b\u1ecb DDoS \u1edf m\u1ee9c \u0111\u1ed9 nh\u1eb9"},"content":{"rendered":"\n<p>Anycast l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1ea1ng (network addressing) v\u00e0 ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn (routing method) c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau ho\u1eb7c c\u00e1c c\u00e1c n\u00fat \/ nodes. <\/p>\n\n\n\n<p>Trong b\u1ed1i c\u1ea3nh c\u1ee7a <a href=\"https:\/\/kiencang.net\/cdn-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN<\/a>, Anycast th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn trung t\u00e2m d\u1eef li\u1ec7u g\u1ea7n nh\u1ea5t v\u1edbi kh\u1ea3 n\u0103ng x\u1eed l\u00fd y\u00eau c\u1ea7u hi\u1ec7u qu\u1ea3. <\/p>\n\n\n\n<p>Kh\u1ea3 n\u0103ng l\u1ef1a ch\u1ecdn \u0111\u1ecbnh tuy\u1ebfn cho ph\u00e9p m\u1ea1ng Anycast c\u00f3 kh\u1ea3 n\u0103ng \u0111\u00e0n h\u1ed3i, ch\u1ed1ng ch\u1ecdi khi \u0111\u1ed1i m\u1eb7t v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn, t\u1eafc ngh\u1ebdn m\u1ea1ng, v\u00e0 <a href=\"https:\/\/kiencang.net\/ddos-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea5n c\u00f4ng DDoS<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"624\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-la-gi.png\" alt=\"Anycast l\u00e0 g\u00ec\" class=\"wp-image-18234\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-la-gi.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-la-gi-300x183.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-la-gi-768x468.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/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\" role=\"button\"><label for=\"item-6577d74e190b0\" ><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><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d74e190b0\"  type=\"checkbox\" id=\"item-6577d74e190b0\"><\/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:\/\/kiencang.net\/anycast-la-gi\/#Cach_Anycast_lam_viec\" title=\"C\u00e1ch Anycast l\u00e0m vi\u1ec7c?\">C\u00e1ch Anycast l\u00e0m vi\u1ec7c?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/anycast-la-gi\/#Tai_sao_su_dung_mang_Anycast\" title=\"T\u1ea1i sao s\u1eed d\u1ee5ng m\u1ea1ng Anycast?\">T\u1ea1i sao s\u1eed d\u1ee5ng m\u1ea1ng Anycast?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/anycast-la-gi\/#Su_khac_biet_giua_Anycast_va_Unicast_la_gi\" title=\"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Anycast v\u00e0 Unicast l\u00e0 g\u00ec?\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Anycast v\u00e0 Unicast 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-4\" href=\"https:\/\/kiencang.net\/anycast-la-gi\/#Lam_the_nao_Anycast_giam_nhe_duoc_cac_cuoc_tan_cong_DDoS\" title=\"L\u00e0m th\u1ebf n\u00e0o Anycast gi\u1ea3m nh\u1eb9 \u0111\u01b0\u1ee3c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS?\">L\u00e0m th\u1ebf n\u00e0o Anycast gi\u1ea3m nh\u1eb9 \u0111\u01b0\u1ee3c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"cach-anycast-lam-vi\u1ec7c\"><span class=\"ez-toc-section\" id=\"Cach_Anycast_lam_viec\"><\/span>C\u00e1ch Anycast l\u00e0m vi\u1ec7c?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a m\u1ea1ng Anycast c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh tuy\u1ebfn c\u00e1c y\u00eau c\u1ea7u k\u1ebft n\u1ed1i \u0111\u1ebfn qua nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u. Khi y\u00eau c\u1ea7u \u0111i \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t li\u00ean k\u1ebft \u0111\u1ebfn m\u1ea1ng Anycast, m\u1ea1ng s\u1ebd ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u d\u1ef1a tr\u00ean m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c \u01b0u ti\u00ean.<\/p>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn \u0111\u1eb1ng sau vi\u1ec7c ch\u1ecdn l\u1ef1a m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u nh\u1ea5t \u0111\u1ecbnh s\u1ebd th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ed1i \u01b0u gi\u1ea3m thi\u1ec3u \u0111\u1ed9 tr\u1ec5 (latency) b\u1eb1ng c\u00e1ch ch\u1ecdn trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u t\u00ednh t\u1eeb n\u01a1i y\u00eau c\u1ea7u. Anycast \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi s\u1ef1 k\u1ebft h\u1ee3p 1-\u0111\u1ed1i-1 c\u1ee7a nhi\u1ec1u b\u00ean li\u00ean quan, v\u00e0 l\u00e0 m\u1ed9t trong 5 ph\u01b0\u01a1ng th\u00fac giao th\u1ee9c m\u1ea1ng ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giao th\u1ee9c Internet.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"t\u1ea1i-sao-s\u1eed-d\u1ee5ng-m\u1ea1ng-anycast\"><span class=\"ez-toc-section\" id=\"Tai_sao_su_dung_mang_Anycast\"><\/span>T\u1ea1i sao s\u1eed d\u1ee5ng m\u1ea1ng Anycast?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>N\u1ebfu nhi\u1ec1u y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ed3ng th\u1eddi t\u1edbi c\u00f9ng m\u00e1y ch\u1ee7 g\u1ed1c, m\u00e1y ch\u1ee7 g\u1ed1c c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u00f3 v\u00e0 kh\u00f4ng th\u1ec3 ph\u1ea3n h\u1ed3i hi\u1ec7u qu\u1ea3 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn sau \u0111\u00f3.<\/p>\n\n\n\n<p>V\u1edbi m\u1ea1ng Anycast, thay v\u00ec ch\u1ec9 m\u1ed9t m\u00e1y ch\u1ee7 g\u1ed1c nh\u1eadn l\u00e3nh g\u00e1nh n\u1eb7ng c\u1ee7a l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, t\u1ea3i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n ra nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n c\u00f3 kh\u00e1c, t\u1eebng n\u01a1i s\u1ebd c\u00f3 c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 ph\u1ea3n h\u1ed3i c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn. <\/p>\n\n\n\n<p>Ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn n\u00e0y c\u00f3 th\u1ec3 gi\u00fap m\u00e1y ch\u1ee7 g\u1ed1c kh\u00f4ng c\u1ea7n n\u00e2ng c\u1ea5p (extending capacity) v\u00e0 tr\u00e1nh d\u1ecbch v\u1ee5 b\u1ecb gi\u00e1n \u0111o\u1ea1n (service interruptions) cho m\u00e1y kh\u00e1ch y\u00eau c\u1ea7u n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"s\u1ef1-khac-bi\u1ec7t-gi\u1eefa-anycast-va-unicast-la-gi\"><span class=\"ez-toc-section\" id=\"Su_khac_biet_giua_Anycast_va_Unicast_la_gi\"><\/span>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Anycast v\u00e0 Unicast l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>H\u1ea7u h\u1ebft Internet ho\u1ea1t \u0111\u1ed9ng th\u00f4ng qua s\u01a1 \u0111\u1ed3 \u0111\u1ecbnh tuy\u1ebfn g\u1ecdi l\u00e0 Unicast. B\u00ean d\u01b0\u1edbi Unicast, t\u1eebng node trong m\u1ea1ng s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t. M\u1ea1ng t\u1ea1i nh\u00e0 v\u00e0 v\u0103n ph\u00f2ng s\u1eed d\u1ee5ng Unicast, khi m\u1ed9t m\u00e1y t\u00ednh k\u1ebft n\u1ed1i \u0111\u1ebfn m\u1ea1ng kh\u00f4ng d\u00e2y v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng \u0111i\u1ec7p n\u00f3i r\u1eb1ng \u0111\u1ecba ch\u1ec9 IP \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, v\u1ea5n \u0111\u1ec1 xung \u0111\u1ed9t \u0111\u1ecba ch\u1ec9 IP x\u1ea3y ra b\u1edfi v\u00ec m\u1ed9t m\u00e1y t\u00ednh kh\u00e1c tr\u00ean c\u00f9ng m\u1ea1ng Unicast \u0111\u00f3 \u0111\u00e3 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP \u0111\u1ea5y r\u1ed3i. Trong ph\u1ea7n l\u1edbn tr\u01b0\u1eddng h\u1ee3p, \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"548\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/Unicast-1024x548.png\" alt=\"\" class=\"wp-image-18238\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/Unicast-1024x548.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/Unicast-300x160.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/Unicast-768x411.png 768w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/Unicast.png 1161w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p>Khi m\u1ed9t CDN s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 ki\u1ec3u unicast, l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn tr\u1ef1c ti\u1ebfp t\u1edbi node c\u1ee5 th\u1ec3. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra l\u1ed7 h\u1ed5ng khi m\u1ea1ng g\u1eb7p ph\u1ea3i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp b\u1ea5t th\u01b0\u1eddng, ch\u1eb3ng h\u1ea1n nh\u01b0 trong giai \u0111o\u1ea1n t\u1ea5n c\u00f4ng DDoS. <\/p>\n\n\n\n<p>V\u00ec l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u c\u1ee5 th\u1ec3, do \u0111\u00f3 m\u1ed9t v\u1ecb tr\u00ed ho\u1eb7c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng xung quanh c\u00f3 th\u1ec3 tr\u1edf n\u00ean b\u1ecb qu\u00e1 t\u1ea3i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn \u0111\u1ebfn t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (denial-of-service) v\u1edbi m\u1ed9t y\u00eau c\u1ea7u h\u1ee3p l\u1ec7.<\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng Anycast ngh\u0129a l\u00e0 m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng \u0111\u00e0n h\u1ed3i m\u1ea1nh m\u1ebd. V\u00ec l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd t\u00ecm \u0111\u1ebfn con \u0111\u01b0\u1eddng t\u1ed1t nh\u1ea5t, to\u00e0n b\u1ed9 m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 th\u1ec3 offline v\u00e0 l\u01b0u l\u01b0\u1ee3ng s\u1ebd t\u1ef1 \u0111\u1ed9ng di chuy\u1ec3n \u0111\u1ebfn trung t\u00e2m d\u1eef li\u1ec7u \u1edf g\u1ea7n \u0111\u00f3.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lam-th\u1ebf-nao-anycast-gi\u1ea3m-nh\u1eb9-d\u01b0\u1ee3c-cac-cu\u1ed9c-t\u1ea5n-cong-ddos\"><span class=\"ez-toc-section\" id=\"Lam_the_nao_Anycast_giam_nhe_duoc_cac_cuoc_tan_cong_DDoS\"><\/span>L\u00e0m th\u1ebf n\u00e0o Anycast gi\u1ea3m nh\u1eb9 \u0111\u01b0\u1ee3c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sau khi c\u00e1c c\u00f4ng c\u1ee5 kh\u00e1c gi\u1ea3m nh\u1eb9 DDoS b\u1eb1ng c\u00e1ch l\u1ecdc ra m\u1ed9t s\u1ed1 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1ea5n c\u00f4ng, Anycast s\u1ebd ph\u00e2n ph\u1ed1i c\u00e1c l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1ea5n c\u00f4ng c\u00f2n l\u1ea1i ra nhi\u1ec1u trung t\u00e2m d\u1eef li\u1ec7u, ng\u0103n b\u1ea5t c\u1ee7a v\u1ecb tr\u00ed n\u00e0o b\u1ecb qu\u00e1 t\u1ea3i v\u00ec c\u00e1c y\u00eau c\u1ea7u. N\u1ebfu kh\u1ea3 n\u0103ng c\u1ee7a m\u1ea1ng Anycast l\u1edbn h\u01a1n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1ea5n c\u00f4ng, cu\u1ed9c t\u1ea5n c\u00f4ng s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3m nh\u1eb9 hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p>Trong ph\u1ea7n l\u1edbn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS, nhi\u1ec1u m\u00e1y t\u00ednh l\u00e0 zoombie ho\u1eb7c bot \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong d\u1ea1ng c\u00f3 t\u00ean g\u1ecdi l\u00e0 botnet. Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y c\u00f3 th\u1ec3 n\u1eb1m r\u1ea3i r\u00e1c tr\u00ean web v\u00e0 th\u01b0\u1eddng t\u1ea1o ra r\u1ea5t nhi\u1ec1u l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u00e0 ch\u00fang c\u00f3 th\u1ec3 g\u00e2y qu\u00e1 t\u1ea3i trong ki\u1ec3u k\u1ebft n\u1ed1i Unicast th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-unicast-1024x485.png\" alt=\"Anycast v\u00e0 Unicast\" class=\"wp-image-18243\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-unicast-1024x485.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-unicast-300x142.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-unicast-768x363.png 768w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/anycast-unicast.png 1196w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><em>(L\u01b0\u1ee3c d\u1ecbch t\u1eeb b\u00e0i vi\u1ebft <a href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/glossary\/anycast-network\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">What is Anycast? How does Anycast Work? c\u1ee7a Cloudflare<\/a>)<\/em> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anycast l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1ea1ng (network addressing) v\u00e0 ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn (routing method) c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau ho\u1eb7c c\u00e1c c\u00e1c n\u00fat \/ nodes. Trong b\u1ed1i c\u1ea3nh c\u1ee7a CDN, Anycast th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn trung t\u00e2m &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252,257],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Anycast l\u00e0 g\u00ec &amp; L\u00e0m th\u1ebf n\u00e0o m\u1ea1ng CDN c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cho c\u00e1c m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o website c\u1ee7a b\u1ea1n kh\u00f4ng qu\u00e1 t\u1ea3i, ngay c\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p b\u1ecb DDoS \u1edf m\u1ee9c \u0111\u1ed9 nh\u1eb9 &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/anycast-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Anycast l\u00e0 g\u00ec &amp; L\u00e0m th\u1ebf n\u00e0o m\u1ea1ng CDN c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cho c\u00e1c m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o website c\u1ee7a b\u1ea1n kh\u00f4ng qu\u00e1 t\u1ea3i, ngay c\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p b\u1ecb DDoS \u1edf m\u1ee9c \u0111\u1ed9 nh\u1eb9 &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Anycast l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1ea1ng (network addressing) v\u00e0 ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn (routing method) c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau ho\u1eb7c c\u00e1c c\u00e1c n\u00fat \/ nodes. 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Email li\u00ean h\u1ec7: guiemailchotoi@gmail.com","sameAs":["https:\/\/www.facebook.com\/anhducnguyen87\/"],"url":"https:\/\/kiencang.net\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/18230"}],"collection":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/comments?post=18230"}],"version-history":[{"count":1,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/18230\/revisions"}],"predecessor-version":[{"id":24381,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/18230\/revisions\/24381"}],"wp:attachment":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/media?parent=18230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/categories?post=18230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/tags?post=18230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}