{"id":476106,"date":"2023-08-09T07:25:33","date_gmt":"2023-08-09T07:25:33","guid":{"rendered":""},"modified":"2023-09-05T11:12:01","modified_gmt":"2023-09-05T11:12:01","slug":"bridge-protocol-data-unit","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/bridge-protocol-data-unit\/","title":{"rendered":"\u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i"},"content":{"rendered":"

\u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i (BPDU) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a giao ti\u1ebfp m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t trong b\u1ed1i c\u1ea3nh m\u00e1y ch\u1ee7 proxy v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng. N\u00f3 ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa c\u00e1c c\u1ea7u n\u1ed1i m\u1ea1ng, cho ph\u00e9p ch\u00fang giao ti\u1ebfp v\u00e0 l\u00e0m vi\u1ec7c c\u00f9ng nhau m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch. BPDU \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng, d\u1ef1 ph\u00f2ng v\u00e0 ng\u0103n ch\u1eb7n v\u00f2ng l\u1eb7p, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu \u0111\u1ec3 qu\u1ea3n l\u00fd m\u1ea1ng hi\u1ec7u qu\u1ea3 v\u00e0 ch\u1ee9c n\u0103ng m\u00e1y ch\u1ee7 proxy.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n

Kh\u00e1i ni\u1ec7m \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1980 khi c\u00e1c m\u1ea1ng d\u1ef1a tr\u00ean Ethernet ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn. Ti\u1ebfn s\u0129 Radia Perlman, m\u1ed9t nh\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh ng\u01b0\u1eddi M\u1ef9, \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t \u00fd t\u01b0\u1edfng v\u1ec1 Giao th\u1ee9c Spanning Tree (STP), d\u1ef1a v\u00e0o BPDU \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c v\u00f2ng l\u1eb7p m\u1ea1ng v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng d\u1ef1 ph\u00f2ng c\u1ee7a m\u1ea1ng. Kh\u00e1i ni\u1ec7m n\u00e0y sau \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a th\u00e0nh m\u1ed9t ph\u1ea7n c\u1ee7a \u0111\u1eb7c t\u1ea3 IEEE 802.1D v\u00e0o n\u0103m 1990, c\u1ee7ng c\u1ed1 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong truy\u1ec1n th\u00f4ng m\u1ea1ng.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c Bridge<\/h2>\n

\u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t \u0111\u1ecbnh d\u1ea1ng khung ch\u1ee9a th\u00f4ng tin quan tr\u1ecdng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c c\u1ea7u n\u1ed1i ho\u1eb7c b\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ec3 trao \u0111\u1ed5i d\u1eef li\u1ec7u. Khi m\u1ed9t c\u00e2y c\u1ea7u nh\u1eadn \u0111\u01b0\u1ee3c BPDU, n\u00f3 s\u1ebd s\u1eed d\u1ee5ng th\u00f4ng tin trong \u0111\u00f3 \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u1ea5u tr\u00fac li\u00ean k\u1ebft c\u00e2y kh\u00f4ng c\u00f3 v\u00f2ng l\u1eb7p. C\u1ea5u tr\u00fac c\u00e2y n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n xung \u0111\u1ed9t g\u00f3i d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 trong m\u1ea1ng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Giao th\u1ee9c Spanning Tree, BPDU \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ea1ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 khi c\u00f3 nhi\u1ec1u \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn \u0111\u00edch.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n

BPDU ch\u1ee9a m\u1ed9t s\u1ed1 tr\u01b0\u1eddng ch\u00ednh h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3:<\/p>\n

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  1. \n

    M\u00e3 \u0111\u1ecbnh danh giao th\u1ee9c (PID):<\/strong> X\u00e1c \u0111\u1ecbnh giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 trao \u0111\u1ed5i BPDU, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 0x0000 (bi\u1ec3u th\u1ecb Giao th\u1ee9c c\u00e2y k\u00e9o d\u00e0i).<\/p>\n<\/li>\n

  2. \n

    M\u00e3 \u0111\u1ecbnh danh phi\u00ean b\u1ea3n giao th\u1ee9c (PVID):<\/strong> Cho bi\u1ebft phi\u00ean b\u1ea3n c\u1ee7a Giao th\u1ee9c Spanning Tree \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n<\/li>\n

  3. \n

    ID c\u1ea7u (BID):<\/strong> X\u00e1c \u0111\u1ecbnh duy nh\u1ea5t t\u1eebng c\u00e2y c\u1ea7u trong m\u1ea1ng. N\u00f3 bao g\u1ed3m gi\u00e1 tr\u1ecb \u01afu ti\u00ean c\u1ea7u v\u00e0 \u0111\u1ecba ch\u1ec9 Ki\u1ec3m so\u00e1t truy c\u1eadp ph\u01b0\u01a1ng ti\u1ec7n (MAC) c\u1ee7a c\u1ea7u.<\/p>\n<\/li>\n

  4. \n

    ID c\u1ed5ng:<\/strong> X\u00e1c \u0111\u1ecbnh c\u1ed5ng m\u00e0 BPDU \u0111\u01b0\u1ee3c g\u1eedi qua \u0111\u00f3.<\/p>\n<\/li>\n

  5. \n

    Tu\u1ed5i tin nh\u1eafn:<\/strong> Bi\u1ec3u th\u1ecb th\u1eddi gian \u0111\u00e3 tr\u00f4i qua k\u1ec3 t\u1eeb khi BPDU \u0111\u01b0\u1ee3c t\u1ea1o.<\/p>\n<\/li>\n

  6. \n

    Tu\u1ed5i t\u1ed1i \u0111a:<\/strong> X\u00e1c \u0111\u1ecbnh th\u1eddi gian t\u1ed1i \u0111a m\u1ed9t BPDU c\u00f3 hi\u1ec7u l\u1ef1c tr\u01b0\u1edbc khi b\u1ecb lo\u1ea1i b\u1ecf.<\/p>\n<\/li>\n

  7. \n

    Xin ch\u00e0o th\u1eddi gian:<\/strong> Ch\u1ec9 \u0111\u1ecbnh kho\u1ea3ng th\u1eddi gian gi\u1eefa hai BPDU li\u00ean ti\u1ebfp.<\/p>\n<\/li>\n

  8. \n

    \u0110\u1ed9 tr\u1ec5 chuy\u1ec3n ti\u1ebfp:<\/strong> Th\u1eddi gian m\u00e0 m\u1ed9t c\u1ed5ng c\u1ea7u tr\u1ea3i qua \u1edf tr\u1ea1ng th\u00e1i Nghe v\u00e0 H\u1ecdc tr\u01b0\u1edbc khi chuy\u1ec3n sang tr\u1ea1ng th\u00e1i Chuy\u1ec3n ti\u1ebfp.<\/p>\n<\/li>\n<\/ol>\n

    Khi m\u1ea1ng kh\u1edfi \u0111\u1ed9ng ho\u1eb7c tr\u1ea3i qua c\u00e1c thay \u0111\u1ed5i, c\u00e1c c\u1ea7u n\u1ed1i s\u1ebd trao \u0111\u1ed5i BPDU \u0111\u1ec3 thi\u1ebft l\u1eadp li\u00ean l\u1ea1c v\u00e0 x\u00e2y d\u1ef1ng c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng t\u1ed1i \u01b0u. Qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i BPDU bao g\u1ed3m vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7u g\u1ed1c, g\u00e1n vai tr\u00f2 c\u1ed5ng (root, ch\u1ec9 \u0111\u1ecbnh ho\u1eb7c ch\u1eb7n) v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng \u0111i t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ebfn c\u1ea7u g\u1ed1c.<\/p>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i<\/h2>\n

    \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i t\u1ef1 h\u00e0o c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng thi\u1ebft y\u1ebfu khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong ho\u1ea1t \u0111\u1ed9ng giao ti\u1ebfp m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7 proxy:<\/p>\n

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    1. \n

      Ph\u00f2ng ng\u1eeba v\u00f2ng l\u1eb7p:<\/strong> M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a BPDU l\u00e0 ng\u0103n ch\u1eb7n c\u00e1c v\u00f2ng l\u1eb7p m\u1ea1ng, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn xung \u0111\u1ed9t g\u00f3i v\u00e0 d\u1eabn \u0111\u1ebfn m\u1ea5t \u1ed5n \u0111\u1ecbnh m\u1ea1ng.<\/p>\n<\/li>\n

    2. \n

      D\u1ef1 ph\u00f2ng v\u00e0 dung sai l\u1ed7i:<\/strong> B\u1eb1ng c\u00e1ch x\u00e2y d\u1ef1ng c\u1ea5u tr\u00fac li\u00ean k\u1ebft c\u00e2y kh\u00f4ng c\u00f3 v\u00f2ng l\u1eb7p, BPDU cho ph\u00e9p m\u1ea1ng c\u00f3 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u1ef1 ph\u00f2ng \u0111\u1ebfn \u0111\u00edch, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i v\u00e0 m\u1ea1ng ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 khi m\u1ed9t s\u1ed1 \u0111\u01b0\u1eddng d\u1eabn b\u1ecb l\u1ed7i.<\/p>\n<\/li>\n

    3. \n

      S\u1eed d\u1ee5ng m\u1ea1ng hi\u1ec7u qu\u1ea3:<\/strong> BPDU gi\u00fap x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u, gi\u1ea3m thi\u1ec3u \u0111\u1ed9 tr\u1ec5 kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea1ng.<\/p>\n<\/li>\n

    4. \n

      Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c:<\/strong> BPDU tu\u00e2n theo ti\u00eau chu\u1ea9n IEEE 802.1D, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau c\u00f3 th\u1ec3 giao ti\u1ebfp hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i<\/h2>\n

      Ch\u1ee7 y\u1ebfu c\u00f3 hai lo\u1ea1i \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i:<\/p>\n

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      1. \n

        C\u1ea5u h\u00ecnh BPDU:<\/strong> C\u00e1c BPDU n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng v\u00e0 duy tr\u00ec c\u1ea5u tr\u00fac li\u00ean k\u1ebft Spanning Tree trong m\u1ea1ng. BPDU c\u1ea5u h\u00ecnh \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 c\u1eadp nh\u1eadt m\u1ea1ng v\u1ec1 nh\u1eefng thay \u0111\u1ed5i v\u1ec1 tr\u1ea1ng th\u00e1i c\u1ea7u n\u1ed1i v\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a li\u00ean k\u1ebft.<\/p>\n<\/li>\n

      2. \n

        Th\u00f4ng b\u00e1o thay \u0111\u1ed5i c\u1ea5u tr\u00fac li\u00ean k\u1ebft (TCN) BPDU:<\/strong> Khi m\u1ed9t c\u1ea7u n\u1ed1i m\u1ea1ng g\u1eb7p ph\u1ea3i s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u1ea1ng th\u00e1i, n\u00f3 s\u1ebd g\u1eedi TCN BPDU \u0111\u1ec3 th\u00f4ng b\u00e1o cho c\u00e1c c\u1ea7u n\u1ed1i kh\u00e1c v\u1ec1 s\u1ef1 thay \u0111\u1ed5i \u0111\u00f3. \u0110i\u1ec1u n\u00e0y nh\u1eafc nh\u1edf c\u00e1c c\u1ea7u n\u1ed1i kh\u00e1c \u0111\u00e1nh gi\u00e1 l\u1ea1i c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng, gi\u1ea3m th\u1eddi gian th\u00edch \u1ee9ng v\u1edbi nh\u1eefng thay \u0111\u1ed5i.<\/p>\n<\/li>\n<\/ol>\n

        B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i BPDU:<\/p>\n\n\n\n\n\n\n
        Lo\u1ea1i BPDU<\/th>\nM\u1ee5c \u0111\u00edch<\/th>\nC\u00f2 s\u00fang<\/th>\n<\/tr>\n<\/thead>\n
        C\u1ea5u h\u00ecnh BPDU<\/td>\nX\u00e2y d\u1ef1ng v\u00e0 duy tr\u00ec Spanning Tree<\/td>\nG\u1eedi \u0111\u1ecbnh k\u1ef3 ho\u1eb7c \u0111\u1ec3 \u0111\u00e1p \u1ee9ng v\u1edbi nh\u1eefng thay \u0111\u1ed5i c\u1ee7a m\u1ea1ng<\/td>\n<\/tr>\n
        TCN BPDU<\/td>\nTh\u00f4ng b\u00e1o cho c\u00e1c c\u1ea7u n\u1ed1i kh\u00e1c v\u1ec1 thay \u0111\u1ed5i m\u1ea1ng<\/td>\n\u0110\u01b0\u1ee3c g\u1eedi khi c\u00f3 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u1ea1ng th\u00e1i c\u1ea7u n\u1ed1i ho\u1eb7c li\u00ean k\u1ebft<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u Giao th\u1ee9c Bridge, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

        \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau \u0111\u1ec3 n\u00e2ng cao t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n

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        1. \n

          D\u1ef1 ph\u00f2ng m\u1ea1ng:<\/strong> B\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u1ea5u tr\u00fac li\u00ean k\u1ebft Spanning Tree, BPDU \u0111\u1ea3m b\u1ea3o t\u00ednh d\u1ef1 ph\u00f2ng c\u1ee7a m\u1ea1ng, cho ph\u00e9p ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 khi m\u1ed9t s\u1ed1 \u0111\u01b0\u1eddng d\u1eabn b\u1ecb l\u1ed7i.<\/p>\n<\/li>\n

        2. \n

          C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> BPDU cho ph\u00e9p c\u00e1c c\u1ea7u n\u1ed1i t\u00ednh to\u00e1n c\u00e1c \u0111\u01b0\u1eddng \u0111i ng\u1eafn nh\u1ea5t t\u1edbi c\u1ea7u g\u1ed1c, th\u00fac \u0111\u1ea9y c\u00e2n b\u1eb1ng t\u1ea3i hi\u1ec7u qu\u1ea3 tr\u00ean c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng.<\/p>\n<\/li>\n<\/ol>\n

          Tuy nhi\u00ean, c\u1ea5u h\u00ecnh ho\u1eb7c thay \u0111\u1ed5i m\u1ea1ng kh\u00f4ng \u0111\u00fang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0:<\/p>\n

            \n
          1. \n

            V\u00f2ng l\u1eb7p m\u1ea1ng:<\/strong> C\u1ea5u h\u00ecnh sai c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng l\u1eb7p m\u1ea1ng, d\u1eabn \u0111\u1ebfn b\u00e3o ph\u00e1t s\u00f3ng v\u00e0 t\u1eafc ngh\u1ebdn m\u1ea1ng.<\/p>\n<\/li>\n

          2. \n

            \u0110\u01b0\u1eddng d\u1eabn d\u01b0\u1edbi m\u1ee9c t\u1ed1i \u01b0u:<\/strong> N\u1ebfu vi\u1ec7c trao \u0111\u1ed5i BPDU kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a th\u00ec c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u01b0\u1edbi m\u1ee9c t\u1ed1i \u01b0u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ecdn, d\u1eabn \u0111\u1ebfn vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<\/ol>\n

            \u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng ph\u1ea3i:<\/p>\n

              \n
            1. \n

              C\u1ea5u h\u00ecnh BPDU \u0111\u00fang c\u00e1ch:<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng BPDU \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c \u0111\u1ec3 ng\u0103n ch\u1eb7n v\u00f2ng l\u1eb7p m\u1ea1ng v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn m\u1ea1ng.<\/p>\n<\/li>\n

            2. \n

              Gi\u00e1m s\u00e1t th\u01b0\u1eddng xuy\u00ean:<\/strong> Li\u00ean t\u1ee5c gi\u00e1m s\u00e1t m\u1ea1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c k\u1ecbp th\u1eddi m\u1ecdi b\u1ea5t th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn BPDU.<\/p>\n<\/li>\n<\/ol>\n

              C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 nh\u1eefng so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n\n\n\n\n\n\n\n\n
              Thu\u1eadt ng\u1eef<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
              \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i (BPDU)<\/td>\nM\u1ed9t \u0111\u1ecbnh d\u1ea1ng khung \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa c\u00e1c c\u1ea7u n\u1ed1i m\u1ea1ng nh\u1eb1m x\u00e2y d\u1ef1ng v\u00e0 duy tr\u00ec c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng kh\u00f4ng c\u00f3 v\u00f2ng l\u1eb7p.<\/td>\n<\/tr>\n
              M\u00e1y ch\u1ee7 proxy<\/td>\nM\u1ed9t m\u00e1y ch\u1ee7 trung gian ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 internet, chuy\u1ec3n ti\u1ebfp c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y kh\u00e1ch.<\/td>\n<\/tr>\n
              Giao th\u1ee9c c\u00e2y k\u00e9o d\u00e0i (STP)<\/td>\nM\u1ed9t giao th\u1ee9c m\u1ea1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c c\u1ea7u n\u1ed1i v\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c v\u00f2ng l\u1eb7p trong m\u1ea1ng Ethernet v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng d\u1ef1 ph\u00f2ng c\u1ee7a m\u1ea1ng.<\/td>\n<\/tr>\n
              \u0110\u1ecba ch\u1ec9 Ki\u1ec3m so\u00e1t truy c\u1eadp ph\u01b0\u01a1ng ti\u1ec7n (MAC)<\/td>\nM\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u00e1n cho th\u1ebb giao di\u1ec7n m\u1ea1ng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh \u0111\u1ecba ch\u1ec9 v\u00e0 li\u00ean l\u1ea1c trong m\u1ea1ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i<\/h2>\n

              Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i d\u1ef1 ki\u1ebfn s\u1ebd ph\u00e1t tri\u1ec3n h\u01a1n n\u1eefa, b\u1eaft k\u1ecbp nhu c\u1ea7u c\u1ee7a m\u1ea1ng hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 proxy. S\u1ef1 ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o:<\/p>\n

                \n
              1. \n

                T\u1ed1c \u0111\u1ed9 m\u1ea1ng n\u00e2ng cao:<\/strong> V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00f4ng ngh\u1ec7 m\u1ea1ng nhanh h\u01a1n, BPDU c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 x\u1eed l\u00fd t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u cao h\u01a1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<\/li>\n

              2. \n

                T\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 t\u00edch h\u1ee3p AI:<\/strong> Tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh BPDU v\u00e0 qu\u1ea3n l\u00fd c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng.<\/p>\n<\/li>\n<\/ol>\n

                C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi \u0111\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i<\/h2>\n

                M\u00e1y ch\u1ee7 proxy v\u00e0 \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi nhau trong b\u1ed1i c\u1ea3nh qu\u1ea3n l\u00fd v\u00e0 truy\u1ec1n th\u00f4ng m\u1ea1ng. M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng th\u00f4ng tin \u0111\u01b0\u1ee3c trao \u0111\u1ed5i th\u00f4ng qua BPDU \u0111\u1ec3:<\/p>\n

                  \n
                1. \n

                  C\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 m\u1ea1ng:<\/strong> B\u1eb1ng c\u00e1ch hi\u1ec3u c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng th\u00f4ng qua BPDU, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

                2. \n

                  \u0110\u1ea3m b\u1ea3o t\u00ednh d\u1ef1 ph\u00f2ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00f4ng tin BPDU \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u1ef1 ph\u00f2ng v\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ecbch v\u1ee5 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n ngay c\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p m\u1ea1ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n<\/li>\n<\/ol>\n

                  Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

                  \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 \u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u giao th\u1ee9c c\u1ea7u n\u1ed1i v\u00e0 vai tr\u00f2 c\u1ee7a ch\u00fang trong m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7 proxy, vui l\u00f2ng tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                    \n
                  1. Ti\u00eau chu\u1ea9n IEEE 802.1D<\/a><\/li>\n
                  2. Gi\u1ea3i th\u00edch v\u1ec1 Giao th\u1ee9c C\u00e2y Spanning (STP)<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476107,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476106","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Bridge Protocol Data Unit: Enhancing Proxy Server Communication<\/mark>","faq_items":[{"question":"What is a Bridge Protocol Data Unit (BPDU)?","answer":"

                    A Bridge Protocol Data Unit (BPDU) is a frame format used for exchanging information between network bridges, ensuring a loop-free network topology and enhancing network stability.<\/p>"},{"question":"Who introduced the concept of Bridge Protocol Data Unit?","answer":"

                    The concept of Bridge Protocol Data Unit was first introduced by Dr. Radia Perlman, an American computer scientist, in the early 1980s. It later became standardized as part of the IEEE 802.1D specification.<\/p>"},{"question":"How does Bridge Protocol Data Unit prevent network loops?","answer":"

                    BPDU helps prevent network loops by constructing a loop-free tree topology, which ensures efficient data transmission and reduces the chances of packet collisions.<\/p>"},{"question":"What are the two types of Bridge Protocol Data Units?","answer":"

                    There are two types of BPDUs: Configuration BPDUs, used for building and maintaining the Spanning Tree, and Topology Change Notification (TCN) BPDUs, sent to notify other bridges about network changes.<\/p>"},{"question":"How can Bridge Protocol Data Unit be used with proxy servers?","answer":"

                    Bridge Protocol Data Units can be utilized by proxy servers to optimize network efficiency, ensure redundancy, and improve fault tolerance, making the network more reliable and responsive.<\/p>"},{"question":"How does Bridge Protocol Data Unit contribute to network redundancy?","answer":"

                    BPDU information allows bridges to compute the shortest paths to the root bridge, ensuring network redundancy and fault tolerance in the face of link failures.<\/p>"},{"question":"What are the key features of Bridge Protocol Data Unit?","answer":"

                    The key features of BPDU include loop prevention, redundancy and fault tolerance, efficient network utilization, and interoperability with devices from different vendors.<\/p>"},{"question":"How can I ensure proper configuration of BPDUs?","answer":"

                    To ensure proper configuration of BPDUs, network administrators should correctly set up BPDUs to prevent network loops and regularly monitor the network for any anomalies related to BPDU exchange.<\/p>"},{"question":"How can Bridge Protocol Data Unit evolve in the future?","answer":"

                    In the future, Bridge Protocol Data Units are expected to adapt to faster network technologies and may integrate automation and AI for optimized configuration and network management.<\/p>"},{"question":"How do Bridge Protocol Data Units help proxy servers optimize routing?","answer":"

                    Proxy servers utilize BPDU information to optimize routing decisions, leading to improved data transmission efficiency and better network performance.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476106","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\/476106\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476107"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}