{"id":476005,"date":"2023-08-09T07:25:33","date_gmt":"2023-08-09T07:25:33","guid":{"rendered":""},"modified":"2023-09-05T11:11:49","modified_gmt":"2023-09-05T11:11:49","slug":"bgp","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/bgp\/","title":{"rendered":"BGP"},"content":{"rendered":"<p>Giao th\u1ee9c c\u1ed5ng bi\u00ean (BGP) l\u00e0 m\u1ed9t giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn ph\u1ee9c t\u1ea1p v\u00e0 quan tr\u1ecdng chi ph\u1ed1i c\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean internet. Tr\u00e1ch nhi\u1ec7m c\u1ee7a giao th\u1ee9c n\u00e0y l\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn ch\u00ednh x\u00e1c th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi ph\u1ee9c t\u1ea1p g\u1ed3m c\u00e1c m\u1ea1ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i bao g\u1ed3m Internet to\u00e0n c\u1ea7u.<\/p>\n<h2>S\u1ef1 xu\u1ea5t hi\u1ec7n v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a BGP<\/h2>\n<p>BGP l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong RFC 1105 v\u00e0o th\u00e1ng 6 n\u0103m 1989, nh\u1eb1m \u0111\u00e1p \u1ee9ng nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a Giao th\u1ee9c c\u1ed5ng b\u00ean ngo\u00e0i (EGP) hi\u1ec7n c\u00f3. Internet \u0111ang ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng v\u00e0 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u01a1 b\u1ea3n c\u1ee7a EGP ng\u00e0y c\u00e0ng tr\u1edf n\u00ean kh\u00f4ng \u0111\u1ee7 cho c\u1ea5u tr\u00fac li\u00ean k\u1ebft ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p c\u1ee7a Internet. Gi\u1ea3i ph\u00e1p l\u00e0 BGP, m\u1ed9t giao th\u1ee9c ti\u00ean ti\u1ebfn v\u00e0 linh ho\u1ea1t h\u01a1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn ph\u1ee9c t\u1ea1p gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 tr\u1ecb (AS) \u2014 c\u00e1c m\u1ea1ng ri\u00eang l\u1ebb t\u1ea1o n\u00ean internet.<\/p>\n<p>BGP \u0111\u00e3 tr\u1ea3i qua nhi\u1ec1u l\u1ea7n s\u1eeda \u0111\u1ed5i k\u1ec3 t\u1eeb khi th\u00e0nh l\u1eadp, m\u1ed7i l\u1ea7n \u0111\u1ec1u mang \u0111\u1ebfn nh\u1eefng c\u1ea3i ti\u1ebfn v\u00e0 kh\u1ea3 n\u0103ng b\u1ed5 sung. Phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t, BGP-4, \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 2006 v\u00e0 v\u1eabn l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u0111\u1ebfn ng\u00e0y nay.<\/p>\n<h2>\u0110i s\u00e2u v\u00e0o BGP: Giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn m\u1edf r\u1ed9ng<\/h2>\n<p>BGP l\u00e0 giao th\u1ee9c vect\u01a1 \u0111\u01b0\u1eddng d\u1eabn cho ph\u00e9p c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn li\u00ean l\u1ea1c v\u1ec1 \u0111\u01b0\u1eddng d\u1eabn t\u1ed1t nh\u1ea5t \u0111\u1ec3 d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch. M\u1ed7i h\u1ec7 th\u1ed1ng t\u1ef1 tr\u1ecb (AS) tr\u00ean internet s\u1eed d\u1ee5ng BGP \u0111\u1ec3 qu\u1ea3ng c\u00e1o th\u00f4ng tin v\u1ec1 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1ee7a n\u00f3 t\u1edbi c\u00e1c AS kh\u00e1c.<\/p>\n<p>Th\u00f4ng tin \u0111\u01b0\u1eddng d\u1eabn \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 bao g\u1ed3m nhi\u1ec1u lo\u1ea1i d\u1eef li\u1ec7u nh\u01b0 AS g\u1ed1c, \u0111\u01b0\u1eddng d\u1eabn AS m\u00e0 th\u00f4ng tin \u0111\u00e3 \u0111i v\u00e0 nhi\u1ec1u d\u1eef li\u1ec7u kh\u00e1c. C\u00e1c thu\u1ed9c t\u00ednh n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh quy\u1ebft \u0111\u1ecbnh BGP s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1ed1i \u01b0u nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<p>C\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn BGP trao \u0111\u1ed5i th\u00f4ng tin kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn m\u1ea1ng trong c\u00e1c tin nh\u1eafn BGP. Th\u00f4ng tin n\u00e0y bao g\u1ed3m danh s\u00e1ch c\u00e1c m\u1ea1ng ho\u1eb7c &#039;ti\u1ec1n t\u1ed1&#039; m\u00e0 AS c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn, c\u00f9ng v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh BGP cho m\u1ed7i ti\u1ec1n t\u1ed1, cung c\u1ea5p th\u00f4ng tin h\u1ed7 tr\u1ee3 trong vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng d\u1eabn.<\/p>\n<h2>C\u01a1 ch\u1ebf b\u00ean trong c\u1ee7a BGP: \u0110\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3<\/h2>\n<p>BGP ho\u1ea1t \u0111\u1ed9ng th\u00f4ng qua h\u1ec7 th\u1ed1ng qu\u1ea3ng c\u00e1o v\u00e0 ra quy\u1ebft \u0111\u1ecbnh. B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn BGP g\u1eedi &#039;qu\u1ea3ng c\u00e1o&#039; v\u1ec1 \u0111\u01b0\u1eddng d\u1eabn m\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111i \u0111\u1ebfn c\u00e1c m\u1ea1ng kh\u00e1c. Nh\u1eefng qu\u1ea3ng c\u00e1o n\u00e0y ch\u1ee9a th\u00f4ng tin \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ea7y \u0111\u1ee7, khi\u1ebfn BGP tr\u1edf th\u00e0nh giao th\u1ee9c vect\u01a1 \u0111\u01b0\u1eddng d\u1eabn.<\/p>\n<p>Khi b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn BGP nh\u1eadn \u0111\u01b0\u1ee3c nh\u1eefng qu\u1ea3ng c\u00e1o n\u00e0y, n\u00f3 s\u1ebd \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean thu\u1ed9c t\u00ednh \u0111\u01b0\u1eddng d\u1eabn c\u1ee7a n\u00f3, \u01b0u ti\u00ean c\u00e1c \u0111\u01b0\u1eddng d\u1eabn ng\u1eafn nh\u1ea5t, \u1ed5n \u0111\u1ecbnh nh\u1ea5t v\u00e0 \u0111\u00e1ng tin c\u1eady nh\u1ea5t. Qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh tu\u00e2n theo m\u1ed9t b\u1ed9 quy t\u1eafc c\u00f3 c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Thu\u1eadt to\u00e1n Quy\u1ebft \u0111\u1ecbnh BGP. Khi m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn \u0111\u01b0\u1ee3c ch\u1ecdn, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn BGP s\u1ebd qu\u1ea3ng c\u00e1o quy\u1ebft \u0111\u1ecbnh n\u00e0y t\u1edbi c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn kh\u00e1c, truy\u1ec1n b\u00e1 th\u00f4ng tin \u0111\u1ecbnh tuy\u1ebfn \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt tr\u00ean to\u00e0n m\u1ea1ng.<\/p>\n<p>BGP s\u1eed d\u1ee5ng TCP (Giao th\u1ee9c \u0111i\u1ec1u khi\u1ec3n truy\u1ec1n) l\u00e0m giao th\u1ee9c truy\u1ec1n t\u1ea3i. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o vi\u1ec7c cung c\u1ea5p th\u00f4ng tin \u0111\u1ecbnh tuy\u1ebfn m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady, v\u00ec TCP cung c\u1ea5p c\u01a1 ch\u1ebf x\u00e1c nh\u1eadn c\u00e1c g\u00f3i \u0111\u00e3 nh\u1eadn v\u00e0 truy\u1ec1n l\u1ea1i c\u00e1c g\u00f3i b\u1ecb m\u1ea5t.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a BGP<\/h2>\n<ol>\n<li>\n<p><strong>\u0110\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c mi\u1ec1n<\/strong>: BGP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 tr\u1ecb (li\u00ean mi\u1ec1n), khi\u1ebfn n\u00f3 tr\u1edf n\u00ean quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Internet.<\/p>\n<\/li>\n<li>\n<p><strong>Giao th\u1ee9c vector \u0111\u01b0\u1eddng d\u1eabn<\/strong>: BGP l\u00e0 giao th\u1ee9c vect\u01a1 \u0111\u01b0\u1eddng d\u1eabn, ngh\u0129a l\u00e0 n\u00f3 s\u1eed d\u1ee5ng nhi\u1ec1u thu\u1ed9c t\u00ednh \u0111\u01b0\u1eddng d\u1eabn (PA) kh\u00e1c nhau \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1ed1t nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00f2ng ng\u1eeba v\u00f2ng l\u1eb7p<\/strong>: BGP v\u1ed1n \u0111\u00e3 ng\u0103n ch\u1eb7n c\u00e1c v\u00f2ng l\u1eb7p \u0111\u1ecbnh tuy\u1ebfn b\u1eb1ng c\u00e1ch ki\u1ec3m tra thu\u1ed9c t\u00ednh \u0111\u01b0\u1eddng d\u1eabn AS, t\u1eeb ch\u1ed1i c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng \u0111\u00e3 bao g\u1ed3m AS c\u1ee7a ch\u00ednh n\u00f3.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ecbnh tuy\u1ebfn d\u1ef1a tr\u00ean ch\u00ednh s\u00e1ch<\/strong>: BGP r\u1ea5t linh ho\u1ea1t, cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng \u0111i\u1ec1u khi\u1ec3n lu\u1ed3ng l\u01b0u l\u01b0\u1ee3ng d\u1ef1a tr\u00ean nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau nh\u01b0 hi\u1ec7u su\u1ea5t, chi ph\u00ed ho\u1eb7c nhu c\u1ea7u b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i BGP: N\u1ed9i b\u1ed9 v\u00e0 B\u00ean ngo\u00e0i<\/h2>\n<p>BGP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai lo\u1ea1i ch\u00ednh: BGP n\u1ed9i b\u1ed9 (iBGP) v\u00e0 BGP b\u00ean ngo\u00e0i (eBGP).<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>iBGP<\/th>\n<th>eBGP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>C\u00e1ch s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn trong AS<\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c AS kh\u00e1c nhau<\/td>\n<\/tr>\n<tr>\n<td><strong>Thu\u1ed9c t\u00ednh \u0111\u01b0\u1eddng d\u1eabn AS<\/strong><\/td>\n<td>Kh\u00f4ng \u0111\u01b0\u1ee3c xem x\u00e9t trong qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng d\u1eabn<\/td>\n<td>R\u1ea5t quan tr\u1ecdng cho vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng \u0111i, \u0111\u01b0\u1eddng \u0111i ng\u1eafn nh\u1ea5t \u0111\u01b0\u1ee3c \u01b0u ti\u00ean<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u00f2ng ng\u1eeba v\u00f2ng l\u1eb7p<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c ph\u1ea3n \u00e1nh l\u1ed9 tr\u00ecnh ho\u1eb7c li\u00ean minh<\/td>\n<td>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua ki\u1ec3m tra \u0111\u01b0\u1eddng d\u1eabn AS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng BGP: Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p ti\u1ec1m n\u0103ng<\/h2>\n<p>BGP \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong ho\u1ea1t \u0111\u1ed9ng internet, cung c\u1ea5p c\u01a1 ch\u1ebf cho c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn chia s\u1ebb th\u00f4ng tin v\u1ec1 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1ee7a m\u1ea1ng. Tuy nhi\u00ean, n\u00f3 c\u0169ng \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh, ch\u1ee7 y\u1ebfu trong l\u0129nh v\u1ef1c b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n<p>M\u1ed9t trong nh\u1eefng m\u1ed1i lo ng\u1ea1i b\u1ea3o m\u1eadt l\u1edbn nh\u1ea5t v\u1edbi BGP l\u00e0 thi\u1ebfu x\u00e1c minh t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a tuy\u1ebfn \u0111\u01b0\u1eddng, d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n BGP, trong \u0111\u00f3 AS c\u00f3 th\u1ec3 th\u00f4ng b\u00e1o c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng sai. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng kh\u00f3a c\u00f4ng khai t\u00e0i nguy\u00ean (RPKI) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c th\u1ef1c c\u00e1c qu\u1ea3ng c\u00e1o tuy\u1ebfn \u0111\u01b0\u1eddng b\u1eb1ng m\u1eadt m\u00e3.<\/p>\n<p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c kh\u00e1c do s\u1ef1 t\u0103ng tr\u01b0\u1edfng theo c\u1ea5p s\u1ed1 nh\u00e2n c\u1ee7a Internet v\u00e0 s\u1ef1 gia t\u0103ng t\u01b0\u01a1ng \u1ee9ng v\u1ec1 k\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn to\u00e0n c\u1ea7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u th\u00f4ng qua c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 \u0110\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c mi\u1ec1n kh\u00f4ng ph\u00e2n lo\u1ea1i (CIDR) v\u00e0 t\u1ed5ng h\u1ee3p tuy\u1ebfn \u0111\u01b0\u1eddng.<\/p>\n<h2>BGP: So s\u00e1nh v\u1edbi c\u00e1c giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn kh\u00e1c<\/h2>\n<p>So v\u1edbi c\u00e1c giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn kh\u00e1c nh\u01b0 OSPF (M\u1edf \u0111\u01b0\u1eddng d\u1eabn ng\u1eafn nh\u1ea5t tr\u01b0\u1edbc ti\u00ean) ho\u1eb7c RIP (Giao th\u1ee9c th\u00f4ng tin \u0111\u1ecbnh tuy\u1ebfn), BGP c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>BGP<\/th>\n<th>OSPF<\/th>\n<th>X\u00c9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ki\u1ec3u<\/strong><\/td>\n<td>Vector \u0111\u01b0\u1eddng d\u1eabn<\/td>\n<td>Li\u00ean k\u1ebft nh\u00e0 n\u01b0\u1edbc<\/td>\n<td>Kho\u1ea3ng c\u00e1ch-Vector<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong><\/td>\n<td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao<\/td>\n<td>C\u00f3 th\u1ec3 m\u1edf r\u1ed9ng trong mi\u1ec1n<\/td>\n<td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1ch s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>Li\u00ean mi\u1ec1n<\/td>\n<td>N\u1ed9i mi\u1ec1n<\/td>\n<td>N\u1ed9i mi\u1ec1n<\/td>\n<\/tr>\n<tr>\n<td><strong>H\u1ec7 m\u00e9t<\/strong><\/td>\n<td>Nhi\u1ec1u thu\u1ed9c t\u00ednh<\/td>\n<td>Chi ph\u00ed d\u1ef1a tr\u00ean b\u0103ng th\u00f4ng<\/td>\n<td>S\u1ed1 b\u01b0\u1edbc nh\u1ea3y<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>BGP: Vi\u1ec5n c\u1ea3nh t\u01b0\u01a1ng lai<\/h2>\n<p>M\u1eb7c d\u00f9 BGP \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u01a1n 30 n\u0103m nh\u01b0ng n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng v\u1eabn l\u00e0 trung t\u00e2m trong ho\u1ea1t \u0111\u1ed9ng internet do t\u00ednh m\u1ea1nh m\u1ebd, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng c\u1ee7a n\u00f3. Tuy nhi\u00ean, tr\u1ecdng t\u00e2m \u0111ang chuy\u1ec3n sang c\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a n\u00f3 b\u1eb1ng c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 RPKI v\u00e0 s\u00e1ng ki\u1ebfn SIDR (\u0110\u1ecbnh tuy\u1ebfn gi\u1eefa c\u00e1c mi\u1ec1n an to\u00e0n).<\/p>\n<p>M\u1ed1i quan t\u00e2m \u0111\u1ebfn vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a BGP cho nhu c\u1ea7u k\u1ebft n\u1ed1i m\u1ea1ng hi\u1ec7n \u0111\u1ea1i c\u0169ng ng\u00e0y c\u00e0ng t\u0103ng. Nh\u1eefng n\u1ed7 l\u1ef1c \u0111ang \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh BGP v\u00e0 c\u1ea3i thi\u1ec7n k\u1ef9 thu\u1eadt l\u01b0u l\u01b0\u1ee3ng.<\/p>\n<h2>M\u00e1y ch\u1ee7 BGP v\u00e0 Proxy<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, \u0111\u00f3ng vai tr\u00f2 trung gian cho c\u00e1c y\u00eau c\u1ea7u t\u1eeb kh\u00e1ch h\u00e0ng \u0111ang t\u00ecm ki\u1ebfm t\u00e0i nguy\u00ean t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng BGP \u0111\u1ec3 n\u00e2ng cao ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng BGP, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn s\u00e1ng su\u1ed1t h\u01a1n \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, \u0111\u1ed9 tin c\u1eady v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n<p>V\u00ed d\u1ee5: m\u1ea1ng m\u00e1y ch\u1ee7 proxy tr\u1ea3i r\u1ed9ng tr\u00ean nhi\u1ec1u AS c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng BGP \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn t\u1ed1t nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u, c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m m\u00e1y kh\u00e1ch b\u1eb1ng c\u00e1ch gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng cao.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/border-gateway-protocol-bgp\/index.html\" target=\"_new\" rel=\"noopener nofollow\">Giao th\u1ee9c c\u1ed5ng bi\u00ean (BGP) \u2013 Cisco<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4271\" target=\"_new\" rel=\"noopener nofollow\">RFC 4271 \u2013 Giao th\u1ee9c c\u1ed5ng bi\u00ean 4 (BGP-4)<\/a><\/li>\n<li><a href=\"https:\/\/bgpmon.net\/bgp-the-story-behind-the-internets-success\/\" target=\"_new\" rel=\"noopener nofollow\">BGP: C\u00e2u chuy\u1ec7n \u0111\u1eb1ng sau s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a Internet \u2013 BGPmon<\/a><\/li>\n<li><a href=\"https:\/\/www.juniper.net\/documentation\/en_US\/junos\/topics\/concept\/bgp-routing.html\" target=\"_new\" rel=\"noopener nofollow\">\u0110\u1ecbnh tuy\u1ebfn BGP \u2013 Juniper Networks<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476006,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476005","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Border Gateway Protocol (BGP): The Internet's Backbone<\/mark>","faq_items":[{"question":"What is Border Gateway Protocol (BGP)?","answer":"<p>Border Gateway Protocol (BGP) is a critical routing protocol responsible for determining how data is transferred across the internet. It ensures that packets of data are correctly routed through the complex interconnected networks that make up the internet.<\/p>"},{"question":"When was BGP first defined?","answer":"<p>BGP was first defined in June 1989 in RFC 1105. It was developed to address the limitations of the existing Exterior Gateway Protocol (EGP) as the internet's growth demanded a more advanced and flexible protocol.<\/p>"},{"question":"What is the latest version of BGP?","answer":"<p>The latest version of BGP, known as BGP-4, was introduced in 2006 and is the standard currently used.<\/p>"},{"question":"What are the key features of BGP?","answer":"<p>Key features of BGP include inter-domain routing, its status as a path-vector protocol, its inherent loop prevention capability, and the ability to provide policy-based routing.<\/p>"},{"question":"What types of BGP exist?","answer":"<p>BGP is categorized into two main types: Internal BGP (iBGP) and External BGP (eBGP). iBGP is used for routing within an Autonomous System (AS), while eBGP is used for routing between different ASes.<\/p>"},{"question":"What are the challenges associated with using BGP?","answer":"<p>The primary challenges associated with using BGP relate to security and scalability. In terms of security, BGP lacks route authenticity verification, which can lead to BGP hijacking. As for scalability, the exponential growth of the internet has led to an increase in the size of global routing tables, putting pressure on BGP's capacity.<\/p>"},{"question":"How does BGP compare with other routing protocols like OSPF and RIP?","answer":"<p>BGP is a path-vector protocol, used for inter-domain routing, and is highly scalable. In contrast, OSPF is a link-state protocol used for intra-domain routing, scalable within the domain. RIP is a distance-vector protocol also used for intra-domain routing, but it has limited scalability.<\/p>"},{"question":"How is BGP related to proxy servers?","answer":"<p>Proxy servers, which act as intermediaries for requests from clients seeking resources from other servers, can use BGP to enhance their functionality. By leveraging BGP, proxy servers can make more informed routing decisions to optimize performance, reliability, and security.<\/p>"},{"question":"What are future perspectives of BGP?","answer":"<p>Future perspectives of BGP involve improving its security with solutions like RPKI and the SIDR (Secure Inter-Domain Routing) initiative. There's also growing interest in optimizing BGP for modern networking needs, such as developing machine learning algorithms that can optimize BGP configurations and improve traffic engineering.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476005\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476006"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}