{"id":477804,"date":"2023-08-09T09:20:41","date_gmt":"2023-08-09T09:20:41","guid":{"rendered":""},"modified":"2023-09-05T11:15:27","modified_gmt":"2023-09-05T11:15:27","slug":"layer-2-forwarding-protocol","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/layer-2-forwarding-protocol\/","title":{"rendered":"Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2"},"content":{"rendered":"

Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong m\u1ea1ng m\u00e1y t\u00ednh t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf L\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u (L\u1edbp 2) c\u1ee7a m\u00f4 h\u00ecnh OSI v\u00e0 \u0111\u00f3ng vai tr\u00f2 c\u01a1 b\u1ea3n trong vi\u1ec7c chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9 (LAN). Giao th\u1ee9c n\u00e0y t\u0103ng c\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t m\u1ea1ng b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng c\u1ea7n thi\u1ebft, cu\u1ed1i c\u00f9ng l\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n

Kh\u00e1i ni\u1ec7m v\u1ec1 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh. V\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1970, giao th\u1ee9c Ethernet \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u, cho ph\u00e9p c\u00e1c m\u00e1y t\u00ednh giao ti\u1ebfp trong m\u1ea1ng c\u1ee5c b\u1ed9. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, vi\u1ec7c chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n v\u00ec m\u1ea1ng LAN t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf v\u00e0 s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb b\u1ecb h\u1ea1n ch\u1ebf.<\/p>\n

Khi m\u1ea1ng m\u00e1y t\u00ednh ph\u00e1t tri\u1ec3n v\u00e0 m\u1edf r\u1ed9ng, nhu c\u1ea7u v\u1ec1 c\u01a1 ch\u1ebf chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng tr\u1edf n\u00ean r\u00f5 r\u00e0ng. \u0110\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 quy tr\u00ecnh chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p h\u01a1n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n C\u1ea7u n\u1ed1i minh b\u1ea1ch. Ti\u00eau chu\u1ea9n IEEE 802.1D, \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n n\u0103m 1990, \u0111\u00e3 \u0111\u01b0a ra kh\u00e1i ni\u1ec7m v\u1ec1 thu\u1eadt to\u00e1n b\u1eafc c\u1ea7u v\u00e0 c\u00e2y bao tr\u00f9m, h\u00ecnh th\u00e0nh n\u00ean n\u1ec1n t\u1ea3ng c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 nh\u01b0 ch\u00fang ta bi\u1ebft ng\u00e0y nay.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/h2>\n

Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 ho\u1ea1t \u0111\u1ed9ng \u1edf L\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u, gi\u1ea3i quy\u1ebft c\u1ee5 th\u1ec3 c\u00e1c \u0111\u1ecba ch\u1ec9 MAC (\u0110i\u1ec1u khi\u1ec3n truy c\u1eadp ph\u01b0\u01a1ng ti\u1ec7n) c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng. Khi m\u1ed9t thi\u1ebft b\u1ecb g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c trong c\u00f9ng m\u1ea1ng LAN, thi\u1ebft b\u1ecb \u0111\u00f3 s\u1ebd s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u00edch \u0111\u1ebfn. Qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp bao g\u1ed3m vi\u1ec7c ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 MAC \u0111\u00edch v\u00e0 x\u00e1c \u0111\u1ecbnh c\u1ed5ng th\u00edch h\u1ee3p m\u00e0 d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi t\u1edbi. B\u1eb1ng c\u00e1ch \u0111\u00f3, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 thi\u1ebft l\u1eadp li\u00ean l\u1ea1c tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u00e0 kh\u00f4ng li\u00ean quan \u0111\u1ebfn c\u00e1c giao th\u1ee9c l\u1edbp cao h\u01a1n nh\u01b0 IP.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2: C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n

Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc h\u1ecdc \u0111\u1ecba ch\u1ec9 MAC v\u00e0 chuy\u1ec3n \u0111\u1ed5i d\u1ef1a tr\u00ean b\u1ea3ng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch t\u1eebng b\u01b0\u1edbc v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao th\u1ee9c:<\/p>\n

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    H\u1ecdc \u0111\u1ecba ch\u1ec9 MAC: Khi m\u1ed9t thi\u1ebft b\u1ecb nh\u1eadn \u0111\u01b0\u1ee3c g\u00f3i d\u1eef li\u1ec7u, n\u00f3 s\u1ebd ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 MAC ngu\u1ed3n v\u00e0 c\u1eadp nh\u1eadt b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a n\u00f3 v\u1edbi c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng. Qu\u00e1 tr\u00ecnh n\u00e0y cho ph\u00e9p thi\u1ebft b\u1ecb li\u00ean k\u1ebft \u0111\u1ecba ch\u1ec9 MAC v\u1edbi c\u00e1c c\u1ed5ng c\u1ee5 th\u1ec3 tr\u00ean b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng.<\/p>\n<\/li>\n

  2. \n

    Chuy\u1ec3n m\u1ea1ch d\u1ef1a tr\u00ean b\u1ea3ng: Khi m\u1ed9t thi\u1ebft b\u1ecb c\u1ea7n chuy\u1ec3n ti\u1ebfp g\u00f3i d\u1eef li\u1ec7u sang thi\u1ebft b\u1ecb kh\u00e1c, n\u00f3 s\u1ebd ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 MAC \u0111\u00edch trong b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a n\u00f3. N\u1ebfu t\u00ecm th\u1ea5y \u0111\u1ecba ch\u1ec9 MAC \u0111\u00edch, thi\u1ebft b\u1ecb s\u1ebd chuy\u1ec3n ti\u1ebfp g\u00f3i \u0111\u1ebfn c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng. Tuy nhi\u00ean, n\u1ebfu \u0111\u1ecba ch\u1ec9 \u0111\u00edch kh\u00f4ng c\u00f3 trong b\u1ea3ng, thi\u1ebft b\u1ecb s\u1ebd ph\u00e1t g\u00f3i tin \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng kh\u00e1c, cho ph\u00e9p thi\u1ebft b\u1ecb \u0111\u00edch ph\u1ea3n h\u1ed3i v\u00e0 c\u1eadp nh\u1eadt b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a n\u00f3.<\/p>\n<\/li>\n

  3. \n

    Unicast, Broadcast v\u00e0 Multicast: Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eef li\u1ec7u unicast, Broadcast v\u00e0 Multicast. Unicast g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn m\u1ed9t thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3, Broadcast g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb trong m\u1ea1ng v\u00e0 Multicast g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn m\u1ed9t nh\u00f3m thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 quan t\u00e2m \u0111\u1ebfn th\u00f4ng tin.<\/p>\n<\/li>\n<\/ol>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/h2>\n

    Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3 trong vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u m\u1ea1ng:<\/p>\n

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      Hi\u1ec7u qu\u1ea3:<\/strong> B\u1eb1ng c\u00e1ch chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i d\u1eef li\u1ec7u d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 MAC, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 lo\u1ea1i b\u1ecf nhu c\u1ea7u \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ecba ch\u1ec9 IP ph\u1ee9c t\u1ea1p, d\u1eabn \u0111\u1ebfn ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u nhanh h\u01a1n v\u00e0 gi\u1ea3m chi ph\u00ed m\u1ea1ng.<\/p>\n<\/li>\n

    2. \n

      \u0110\u1ed9 tr\u1ec5 th\u1ea5p:<\/strong> C\u01a1 ch\u1ebf chuy\u1ec3n m\u1ea1ch d\u1ef1a tr\u00ean b\u1ea3ng c\u1ee7a giao th\u1ee9c cho ph\u00e9p li\u00ean l\u1ea1c nhanh ch\u00f3ng v\u00e0 tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, gi\u1ea3m thi\u1ec3u \u0111\u1ed9 tr\u1ec5 x\u1eed l\u00fd g\u00f3i v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5.<\/p>\n<\/li>\n

    3. \n

      Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong> Khi m\u1ea1ng ph\u00e1t tri\u1ec3n, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 v\u1eabn c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u1ea3 m\u1ea1ng nh\u1ecf v\u00e0 l\u1edbn.<\/p>\n<\/li>\n

    4. \n

      Ph\u00f2ng ng\u1eeba v\u00f2ng l\u1eb7p:<\/strong> Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 s\u1eed d\u1ee5ng nhi\u1ec1u c\u01a1 ch\u1ebf ng\u0103n ch\u1eb7n v\u00f2ng l\u1eb7p kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 Giao th\u1ee9c c\u00e2y k\u00e9o d\u00e0i (STP), \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u00f2ng l\u1eb7p m\u1ea1ng v\u00e0 \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n

    5. \n

      \u0110\u1ed9c l\u1eadp thi\u1ebft b\u1ecb:<\/strong> Giao th\u1ee9c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng, cho ph\u00e9p nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c nhau giao ti\u1ebfp li\u1ec1n m\u1ea1ch trong m\u1ea1ng LAN.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/h2>\n

      Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 bao g\u1ed3m nhi\u1ec1u lo\u1ea1i ph\u1ee5 kh\u00e1c nhau, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho c\u00e1c y\u00eau c\u1ea7u v\u00e0 m\u00f4i tr\u01b0\u1eddng m\u1ea1ng c\u1ee5 th\u1ec3. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n\n\n\n\n\n\n\n\n
      Ki\u1ec3u<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      C\u1ea7u n\u1ed1i trong su\u1ed1t<\/td>\nD\u1ea1ng c\u01a1 b\u1ea3n c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2, n\u01a1i c\u00e1c thi\u1ebft b\u1ecb t\u00ecm hi\u1ec3u v\u00e0 chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 MAC. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng Ethernet.<\/td>\n<\/tr>\n
      C\u1ea7u n\u1ed1i \u0111\u1ecbnh tuy\u1ebfn ngu\u1ed3n<\/td>\nTrong lo\u1ea1i n\u00e0y, thi\u1ebft b\u1ecb ngu\u1ed3n ch\u1ec9 \u0111\u1ecbnh tuy\u1ebfn ho\u00e0n ch\u1ec9nh cho g\u00f3i, ghi \u0111\u00e8 quy tr\u00ecnh chuy\u1ec3n ti\u1ebfp ti\u00eau chu\u1ea9n.<\/td>\n<\/tr>\n
      C\u1ea7u n\u1ed1i trong su\u1ed1t tuy\u1ebfn \u0111\u01b0\u1eddng ngu\u1ed3n<\/td>\nM\u1ed9t ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p k\u1ebft h\u1ee3p c\u00e1c t\u00ednh n\u0103ng c\u1ee7a C\u1ea7u n\u1ed1i trong su\u1ed1t v\u00e0 C\u1ea7u n\u1ed1i \u0111\u1ecbnh tuy\u1ebfn ngu\u1ed3n. N\u00f3 cung c\u1ea5p nhi\u1ec1u quy\u1ec1n ki\u1ec3m so\u00e1t h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn g\u00f3i trong khi v\u1eabn duy tr\u00ec kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u1ea7u n\u1ed1i truy\u1ec1n th\u1ed1ng.<\/td>\n<\/tr>\n
      C\u1ea7u n\u1ed1i v\u00f2ng m\u00e3 th\u00f4ng b\u00e1o ngu\u1ed3n-\u0111\u1ecbnh tuy\u1ebfn<\/td>\n\u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n cho m\u1ea1ng Token Ring, lo\u1ea1i n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb ch\u1ec9 \u0111\u1ecbnh tuy\u1ebfn cho t\u1eebng g\u00f3i b\u1eb1ng th\u00f4ng tin \u0111\u1ecbnh tuy\u1ebfn ngu\u1ed3n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2, 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

      Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 t\u00ecm th\u1ea5y \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c t\u00ecnh hu\u1ed1ng m\u1ea1ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n

        \n
      1. \n

        Chuy\u1ec3n m\u1ea1ch Ethernet:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 trong c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch Ethernet, n\u01a1i n\u00f3 cho ph\u00e9p chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 trong m\u1ea1ng LAN.<\/p>\n<\/li>\n

      2. \n

        M\u1ea1ng c\u1ee5c b\u1ed9:<\/strong> Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 t\u1ea1o th\u00e0nh x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a giao ti\u1ebfp trong m\u1ea1ng LAN, \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u li\u1ec1n m\u1ea1ch gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n<\/li>\n

      3. \n

        Vlan (M\u1ea1ng LAN \u1ea3o):<\/strong> B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng Vlan, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 ph\u00e2n \u0111o\u1ea1n m\u1ea1ng d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed kh\u00e1c nhau v\u00e0 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 cho ph\u00e9p li\u00ean l\u1ea1c gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t Vlan.<\/p>\n<\/li>\n

      4. \n

        C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u:<\/strong> Trong trung t\u00e2m d\u1eef li\u1ec7u, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o trao \u0111\u1ed5i d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<\/li>\n<\/ol>\n

        M\u1eb7c d\u00f9 hi\u1ec7u qu\u1ea3 v\u00e0 hi\u1ec7u qu\u1ea3, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh:<\/p>\n

          \n
        1. \n

          B\u00e3o ph\u00e1t s\u00f3ng:<\/strong> C\u00e1c g\u00f3i ph\u00e1t s\u00f3ng qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c c\u01a1n b\u00e3o ph\u00e1t s\u00f3ng, l\u00e0m qu\u00e1 t\u1ea3i t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 khi\u1ebfn hi\u1ec7u su\u1ea5t b\u1ecb suy gi\u1ea3m.<\/p>\n<\/li>\n

        2. \n

          H\u00ecnh th\u00e0nh v\u00f2ng l\u1eb7p:<\/strong> V\u00f2ng l\u1eb7p m\u1ea1ng c\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i kh\u00f4ng ch\u00ednh x\u00e1c, d\u1eabn \u0111\u1ebfn xung \u0111\u1ed9t g\u00f3i v\u00e0 m\u1ea5t d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

        3. \n

          Tr\u00e0n b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC:<\/strong> Trong c\u00e1c m\u1ea1ng l\u1edbn, b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC c\u00f3 th\u1ec3 \u0111\u1ea7y, d\u1eabn \u0111\u1ebfn tr\u00e0n c\u00e1c g\u00f3i tin qu\u1ea3ng b\u00e1.<\/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 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c chi\u1ebfn l\u01b0\u1ee3c nh\u01b0 ki\u1ec3m so\u00e1t c\u01a1n b\u00e3o ph\u00e1t s\u00f3ng, c\u01a1 ch\u1ebf ng\u0103n ng\u1eeba v\u00f2ng l\u1eb7p v\u00e0 t\u1ed1i \u01b0u h\u00f3a k\u00edch th\u01b0\u1edbc b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru.<\/p>\n

          C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n

          D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m m\u1ea1ng kh\u00e1c:<\/p>\n\n\n\n\n\n\n\n\n\n\n
          \u00dd t\u01b0\u1edfng<\/th>\nGiao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/th>\nChuy\u1ec3n ti\u1ebfp l\u1edbp 3 (\u0110\u1ecbnh tuy\u1ebfn)<\/th>\n<\/tr>\n<\/thead>\n
          L\u1edbp ho\u1ea1t \u0111\u1ed9ng<\/td>\nL\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u (L\u1edbp 2)<\/td>\nL\u1edbp m\u1ea1ng (L\u1edbp 3)<\/td>\n<\/tr>\n
          S\u01a1 \u0111\u1ed3 \u0111\u1ecba ch\u1ec9<\/td>\n\u0110\u1ecba ch\u1ec9 MAC<\/td>\n\u0110\u1ecba ch\u1ec9 IP<\/td>\n<\/tr>\n
          Ph\u1ea1m vi<\/td>\nM\u1ea1ng c\u1ee5c b\u1ed9 (LAN)<\/td>\nM\u1ea1ng di\u1ec7n r\u1ed9ng (WAN)<\/td>\n<\/tr>\n
          C\u01a1 ch\u1ebf chuy\u1ec3n ti\u1ebfp<\/td>\nTra c\u1ee9u b\u1ea3ng \u0111\u1ecba ch\u1ec9 MAC<\/td>\nTra c\u1ee9u b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn<\/td>\n<\/tr>\n
          V\u00ed d\u1ee5 v\u1ec1 giao th\u1ee9c<\/td>\nChuy\u1ec3n m\u1ea1ch Ethernet, C\u1ea7u n\u1ed1i trong su\u1ed1t<\/td>\n\u0110\u1ecbnh tuy\u1ebfn IP, OSPF, BGP<\/td>\n<\/tr>\n
          Hi\u1ec7u qu\u1ea3 truy\u1ec1n th\u00f4ng<\/td>\nCao do chuy\u1ec3n ti\u1ebfp d\u1ef1a tr\u00ean MAC tr\u1ef1c ti\u1ebfp<\/td>\nY\u00eau c\u1ea7u tra c\u1ee9u b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn v\u00e0 quy\u1ebft \u0111\u1ecbnh \u0111\u1ecbnh tuy\u1ebfn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Vi\u1ec5n c\u1ea3nh v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/h2>\n

          Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9 v\u00e0 y\u00eau c\u1ea7u m\u1ea1ng ph\u00e1t tri\u1ec3n, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong giao ti\u1ebfp m\u1ea1ng. C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn giao th\u1ee9c bao g\u1ed3m:<\/p>\n

            \n
          1. \n

            Ng\u0103n ch\u1eb7n v\u00f2ng l\u1eb7p n\u00e2ng cao:<\/strong> C\u00e1c c\u01a1 ch\u1ebf ng\u0103n ng\u1eeba v\u00f2ng l\u1eb7p m\u1edbi s\u1ebd \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ea1ng \u1ed5n \u0111\u1ecbnh h\u01a1n n\u1eefa.<\/p>\n<\/li>\n

          2. \n

            Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c c\u1ee7a nhi\u1ec1u nh\u00e0 cung c\u1ea5p:<\/strong> Nh\u1eefng n\u1ed7 l\u1ef1c s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 n\u00e2ng cao kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau, cho ph\u00e9p li\u00ean l\u1ea1c li\u1ec1n m\u1ea1ch trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng ph\u1ee9c t\u1ea1p.<\/p>\n<\/li>\n

          3. \n

            T\u00edch h\u1ee3p SDN:<\/strong> M\u1ea1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u1ea7n m\u1ec1m (SDN) s\u1ebd t\u1ed1i \u01b0u h\u00f3a h\u01a1n n\u1eefa vi\u1ec7c ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2, n\u00e2ng cao kh\u1ea3 n\u0103ng l\u1eadp tr\u00ecnh v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a m\u1ea1ng.<\/p>\n<\/li>\n

          4. \n

            T\u0103ng t\u1ed1c ph\u1ea7n c\u1ee9ng:<\/strong> T\u1ed1i \u01b0u h\u00f3a c\u1ea5p ph\u1ea7n c\u1ee9ng s\u1ebd \u0111\u01b0\u1ee3c tri\u1ec3n khai \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t m\u1ea1ng t\u1ed5ng th\u1ec3.<\/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 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2<\/h2>\n

            C\u00e1c m\u00e1y ch\u1ee7 proxy, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p, c\u00f3 th\u1ec3 b\u1ed5 sung ch\u1ee9c n\u0103ng c\u1ee7a Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau:<\/p>\n

              \n
            1. \n

              C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng hi\u1ec7u qu\u1ea3 gi\u1eefa nhi\u1ec1u m\u00e1y ch\u1ee7, t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 gi\u1ea3m thi\u1ec3u th\u1eddi gian ph\u1ea3n h\u1ed3i.<\/p>\n<\/li>\n

            2. \n

              B\u1ed9 nh\u1edb \u0111\u1ec7m:<\/strong> Proxy c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean v\u00e0o b\u1ed9 \u0111\u1ec7m, gi\u1ea3m nhu c\u1ea7u y\u00eau c\u1ea7u l\u1eb7p l\u1ea1i v\u00e0 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

            3. \n

              \u1ea8n danh v\u00e0 b\u1ea3o m\u1eadt:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 \u0111\u00edch \u0111\u1ebfn, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch \u1ea9n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y kh\u00e1ch.<\/p>\n<\/li>\n

            4. \n

              L\u1ecdc n\u1ed9i dung:<\/strong> Proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 l\u1ecdc n\u1ed9i dung, ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web ho\u1eb7c lo\u1ea1i n\u1ed9i dung c\u1ee5 th\u1ec3 d\u1ef1a tr\u00ean c\u00e1c ch\u00ednh s\u00e1ch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/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 Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2, h\u00e3y xem x\u00e9t kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                \n
              1. Ti\u00eau chu\u1ea9n IEEE 802.1D<\/a><\/li>\n
              2. C\u1ea7u n\u1ed1i minh b\u1ea1ch v\u00e0 Giao th\u1ee9c c\u00e2y k\u00e9o d\u00e0i<\/a><\/li>\n
              3. M\u00e1y ch\u1ee7 proxy v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang<\/a><\/li>\n<\/ol>\n

                T\u00f3m l\u1ea1i, Giao th\u1ee9c chuy\u1ec3n ti\u1ebfp l\u1edbp 2 \u0111\u00f3ng vai tr\u00f2 l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong m\u1ea1ng m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady trong m\u1ea1ng c\u1ee5c b\u1ed9. C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 c\u01a1 ch\u1ebf chuy\u1ec3n ti\u1ebfp c\u1ee7a n\u00f3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u, \u0111\u1ed3ng th\u1eddi kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c t\u00ecnh hu\u1ed1ng m\u1ea1ng kh\u00e1c nhau. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, giao th\u1ee9c n\u00e0y s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u00e0 v\u1eabn l\u00e0 y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n trong vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 hi\u1ec7u su\u1ea5t m\u1ea1ng. Khi k\u1ebft h\u1ee3p v\u1edbi m\u00e1y ch\u1ee7 proxy, n\u00f3 s\u1ebd n\u00e2ng cao h\u01a1n n\u1eefa kh\u1ea3 n\u0103ng c\u1ee7a m\u1ea1ng, g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt.<\/p>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477804","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Layer 2 Forwarding Protocol: Enhancing Network Efficiency and Reliability<\/mark>","faq_items":[{"question":"What is Layer 2 Forwarding Protocol?","answer":"

                Layer 2 Forwarding Protocol is a critical element in computer networking that operates at the Data Link Layer (Layer 2) of the OSI model. It facilitates efficient and reliable data transmission between devices within the same local area network (LAN), optimizing network performance and user experience.<\/p>"},{"question":"How did Layer 2 Forwarding Protocol originate?","answer":"

                The concept of Layer 2 Forwarding Protocol can be traced back to the early days of computer networking when Ethernet was introduced in the late 1970s. The first mention of a more sophisticated data forwarding process similar to Layer 2 Forwarding Protocol can be found in the development of Transparent Bridging and the IEEE 802.1D standard published in 1990.<\/p>"},{"question":"How does Layer 2 Forwarding Protocol work?","answer":"

                Layer 2 Forwarding Protocol operates by forwarding data packets between devices based on their MAC addresses. When a device sends data, it examines the destination MAC address and determines the appropriate port to which the data should be sent. This enables direct communication between devices within the LAN without involving higher-layer protocols like IP.<\/p>"},{"question":"What are the key features of Layer 2 Forwarding Protocol?","answer":"

                Layer 2 Forwarding Protocol offers several key features, including high efficiency, low latency, scalability, loop prevention, and device independence. These features contribute to faster data delivery, reduced network overhead, and stable data transmission.<\/p>"},{"question":"What types of Layer 2 Forwarding Protocol exist?","answer":"

                There are various types of Layer 2 Forwarding Protocol, each catering to specific network environments. The common types include Transparent Bridging, Source Routing Bridging, Source-Route Transparent Bridging, and Source-Route Token Ring Bridging.<\/p>"},{"question":"How is Layer 2 Forwarding Protocol used?","answer":"

                Layer 2 Forwarding Protocol finds applications in Ethernet switching, local area networks (LANs), VLANs, and data centers, among others. It enables efficient communication between devices within the same LAN, ensuring high-speed data exchange.<\/p>"},{"question":"What are the challenges related to Layer 2 Forwarding Protocol?","answer":"

                Challenges related to Layer 2 Forwarding Protocol include broadcast storms, loop formation, and MAC address table overflow. These issues can impact network performance but can be mitigated with proper configurations and loop prevention mechanisms.<\/p>"},{"question":"How does Layer 2 Forwarding Protocol relate to proxy servers?","answer":"

                Proxy servers, such as those provided by OneProxy, can complement Layer 2 Forwarding Protocol by enhancing network performance through load balancing, caching, content filtering, and improving security and anonymity.<\/p>"},{"question":"What technologies are in the future for Layer 2 Forwarding Protocol?","answer":"

                In the future, Layer 2 Forwarding Protocol is expected to see enhancements in loop prevention, improved multi-vendor interoperability, SDN integration, and hardware acceleration, further optimizing network communication.<\/p>"},{"question":"Where can I find more information about Layer 2 Forwarding Protocol?","answer":"

                For more in-depth information about Layer 2 Forwarding Protocol, you can explore resources like the IEEE 802.1D Standard, articles on Transparent Bridging and Spanning Tree Protocol, and Proxy Servers and their applications.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477804","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\/477804\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}