{"id":477549,"date":"2023-08-09T09:16:28","date_gmt":"2023-08-09T09:16:28","guid":{"rendered":""},"modified":"2023-09-05T11:14:57","modified_gmt":"2023-09-05T11:14:57","slug":"ieee-802","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/ieee-802\/","title":{"rendered":"IEEE 802"},"content":{"rendered":"<p>IEEE 802 l\u00e0 m\u1ed9t nh\u00f3m ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Vi\u1ec7n K\u1ef9 s\u01b0 \u0110i\u1ec7n v\u00e0 \u0110i\u1ec7n t\u1eed (IEEE) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u00f4ng ngh\u1ec7 M\u1ea1ng c\u1ee5c b\u1ed9 (LAN) v\u00e0 M\u1ea1ng khu v\u1ef1c \u0111\u00f4 th\u1ecb (MAN). N\u00f3 \u0111\u01b0\u1ee3c th\u00e0nh l\u1eadp v\u00e0o n\u0103m 1980 v\u00e0 k\u1ec3 t\u1eeb \u0111\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n m\u1ea1ng c\u00f3 \u1ea3nh h\u01b0\u1edfng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u00e1c ti\u00eau chu\u1ea9n IEEE 802 bao g\u1ed3m nhi\u1ec1u ch\u1ee7 \u0111\u1ec1, bao g\u1ed3m c\u00e1c giao th\u1ee9c l\u1edbp li\u00ean k\u1ebft d\u1eef li\u1ec7u, c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a l\u1edbp v\u1eadt l\u00fd v\u00e0 c\u00e1c giao th\u1ee9c qu\u1ea3n l\u00fd m\u1ea1ng. C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y cho ph\u00e9p c\u00e1c c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng kh\u00e1c nhau ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru v\u00e0 hi\u1ec7u qu\u1ea3, th\u00fac \u0111\u1ea9y k\u1ebft n\u1ed1i li\u1ec1n m\u1ea1ch gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a IEEE 802 v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>L\u1ecbch s\u1eed c\u1ee7a IEEE 802 b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1980 khi c\u00f3 nhu c\u1ea7u ti\u00eau chu\u1ea9n h\u00f3a c\u00e1c c\u00f4ng ngh\u1ec7 m\u1ea1ng LAN \u0111\u1ec3 cho ph\u00e9p kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Trong th\u1eddi gian n\u00e0y, Ethernet, m\u1ed9t c\u00f4ng ngh\u1ec7 m\u1ea1ng LAN \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i, \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn nh\u01b0ng n\u00f3 thi\u1ebfu th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, Ti\u1ebfn s\u0129 Robert M. Metcalfe \u0111\u00e3 th\u00e0nh l\u1eadp \u1ee6y ban K\u1ef9 thu\u1eadt Ethernet (ETC) v\u00e0o n\u0103m 1980. Sau \u0111\u00f3, v\u00e0o n\u0103m 1983, ETC tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n c\u1ee7a IEEE, d\u1eabn \u0111\u1ebfn vi\u1ec7c th\u00e0nh l\u1eadp d\u1ef1 \u00e1n IEEE 802.<\/p>\n<p>S\u1ef1 \u0111\u1ec1 c\u1eadp ch\u00ednh th\u1ee9c \u0111\u1ea7u ti\u00ean v\u1ec1 IEEE 802 x\u1ea3y ra v\u00e0o n\u0103m 1983 khi IEEE th\u00e0nh l\u1eadp m\u1ed9t \u1ee7y ban m\u1edbi g\u1ecdi l\u00e0 \u1ee6y ban Ti\u00eau chu\u1ea9n LAN\/MAN IEEE 802. \u1ee6y ban n\u00e0y \u0111\u01b0\u1ee3c giao nhi\u1ec7m v\u1ee5 ph\u00e1t tri\u1ec3n v\u00e0 duy tr\u00ec c\u00e1c ti\u00eau chu\u1ea9n m\u1ea1ng trong d\u00f2ng 802.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 IEEE 802. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 IEEE 802<\/h2>\n<p>Nh\u00f3m ti\u00eau chu\u1ea9n IEEE 802 bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c giao th\u1ee9c v\u00e0 c\u00f4ng ngh\u1ec7, m\u1ed7i giao th\u1ee9c ph\u1ee5c v\u1ee5 cho c\u00e1c nhu c\u1ea7u m\u1ea1ng c\u1ee5 th\u1ec3. M\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n \u0111\u00e1ng ch\u00fa \u00fd v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong h\u1ecd IEEE 802 bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p>IEEE 802.3 (Ethernet): Ti\u00eau chu\u1ea9n n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho m\u1ea1ng Ethernet c\u00f3 d\u00e2y. N\u00f3 bao g\u1ed3m nhi\u1ec1u bi\u1ebfn th\u1ec3 kh\u00e1c nhau nh\u01b0 10BASE-T, 100BASE-TX v\u00e0 1000BASE-T, cung c\u1ea5p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u kh\u00e1c nhau qua c\u00e1p \u0111\u1ed3ng xo\u1eafn \u0111\u00f4i.<\/p>\n<\/li>\n<li>\n<p>IEEE 802.11 (Wi-Fi): C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Wi-Fi, ti\u00eau chu\u1ea9n n\u00e0y li\u00ean quan \u0111\u1ebfn c\u00f4ng ngh\u1ec7 m\u1ea1ng LAN kh\u00f4ng d\u00e2y. N\u00f3 h\u1ed7 tr\u1ee3 c\u00e1c d\u1ea3i t\u1ea7n kh\u00e1c nhau (v\u00ed d\u1ee5: 2,4 GHz v\u00e0 5 GHz) v\u00e0 nhi\u1ec1u th\u1ebf h\u1ec7 kh\u00e1c nhau nh\u01b0 802.11a\/b\/g\/n\/ac\/ax, cung c\u1ea5p k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y ng\u00e0y c\u00e0ng nhanh h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p>\n<\/li>\n<li>\n<p>IEEE 802.1Q (VLAN): Ti\u00eau chu\u1ea9n n\u00e0y x\u1eed l\u00fd c\u00e1c m\u1ea1ng LAN \u1ea3o (VLAN) v\u00e0 x\u00e1c \u0111\u1ecbnh ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n v\u00f9ng m\u1ea1ng v\u1eadt l\u00fd th\u00e0nh nhi\u1ec1u ph\u00e2n \u0111o\u1ea1n logic. Vlan c\u1ea3i thi\u1ec7n an ninh m\u1ea1ng, hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd.<\/p>\n<\/li>\n<li>\n<p>IEEE 802.15 (M\u1ea1ng c\u00e1 nh\u00e2n kh\u00f4ng d\u00e2y \u2013 WPAN): Nh\u00f3m ti\u00eau chu\u1ea9n n\u00e0y t\u1eadp trung v\u00e0o c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00f4ng d\u00e2y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 li\u00ean l\u1ea1c t\u1ea7m ng\u1eafn, ch\u1eb3ng h\u1ea1n nh\u01b0 Bluetooth v\u00e0 Zigbee.<\/p>\n<\/li>\n<li>\n<p>IEEE 802.16 (WiMAX): WiMAX l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c to\u00e0n c\u1ea7u \u0111\u1ec3 truy c\u1eadp vi s\u00f3ng v\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng truy c\u1eadp b\u0103ng r\u1ed9ng kh\u00f4ng d\u00e2y t\u1ed1c \u0111\u1ed9 cao tr\u00ean kho\u1ea3ng c\u00e1ch xa, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p cho vi\u1ec7c tri\u1ec3n khai MAN.<\/p>\n<\/li>\n<li>\n<p>IEEE 802.22 (M\u1ea1ng khu v\u1ef1c kh\u00f4ng d\u00e2y \u2013 WRAN): Ti\u00eau chu\u1ea9n n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u00e1c t\u1ea7n s\u1ed1 truy\u1ec1n h\u00ecnh ch\u01b0a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c ch\u01b0a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang m\u1ee9c \u0111\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng truy c\u1eadp Internet b\u0103ng th\u00f4ng r\u1ed9ng \u0111\u1ebfn c\u00e1c v\u00f9ng n\u00f4ng th\u00f4n v\u00e0 v\u00f9ng s\u00e2u v\u00f9ng xa.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a IEEE 802. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a IEEE 802<\/h2>\n<p>C\u00e1c ti\u00eau chu\u1ea9n IEEE 802 tu\u00e2n theo c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p bao g\u1ed3m c\u00e1c nh\u00f3m l\u00e0m vi\u1ec7c ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u00e1t tri\u1ec3n v\u00e0 duy tr\u00ec c\u00e1c ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3. M\u1ed7i nh\u00f3m l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng m\u1ed9t gi\u00e1 tr\u1ecb s\u1ed1 v\u00e0 c\u00e1c nh\u00f3m m\u1edbi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00e0nh l\u1eadp khi c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c y\u00eau c\u1ea7u v\u00e0 c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i.<\/p>\n<p>\u1ee6y ban Ti\u00eau chu\u1ea9n LAN\/MAN IEEE 802 gi\u00e1m s\u00e1t to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh v\u00e0 c\u00e1c nh\u00f3m l\u00e0m vi\u1ec7c c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng ti\u1ec1n t\u1ed1 \u201c802\u201d. V\u00ed d\u1ee5: c\u00e1c ti\u00eau chu\u1ea9n Wi-Fi \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n trong nh\u00f3m l\u00e0m vi\u1ec7c IEEE 802.11, trong khi c\u00e1c ti\u00eau chu\u1ea9n Ethernet n\u1eb1m trong nh\u00f3m l\u00e0m vi\u1ec7c IEEE 802.3.<\/p>\n<p>Qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n m\u1ed9t ti\u00eau chu\u1ea9n m\u1edbi trong IEEE 802 bao g\u1ed3m nhi\u1ec1u giai \u0111o\u1ea1n, bao g\u1ed3m c\u00e1c nh\u00f3m nghi\u00ean c\u1ee9u, nh\u00f3m nhi\u1ec7m v\u1ee5 v\u00e0 b\u1ecf phi\u1ebfu, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ti\u00eau chu\u1ea9n n\u00e0y tr\u1ea3i qua qu\u00e1 tr\u00ecnh xem x\u00e9t v\u00e0 ph\u00ea duy\u1ec7t nghi\u00eam ng\u1eb7t tr\u01b0\u1edbc khi ho\u00e0n thi\u1ec7n.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a IEEE 802<\/h2>\n<p>H\u1ecd ti\u00eau chu\u1ea9n IEEE 802 cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh g\u00f3p ph\u1ea7n v\u00e0o s\u1ef1 th\u00e0nh c\u00f4ng v\u00e0 \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a n\u00f3:<\/p>\n<ol>\n<li>\n<p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c: Ti\u00eau chu\u1ea9n IEEE 802 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch v\u1edbi nhau trong c\u00f9ng m\u1ed9t m\u1ea1ng, th\u00fac \u0111\u1ea9y kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 t\u00ednh linh ho\u1ea1t.<\/p>\n<\/li>\n<li>\n<p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng: Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, c\u00e1c ti\u00eau chu\u1ea9n IEEE 802 m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n, t\u0103ng dung l\u01b0\u1ee3ng v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t.<\/p>\n<\/li>\n<li>\n<p>T\u00ednh linh ho\u1ea1t: V\u1edbi nhi\u1ec1u ti\u00eau chu\u1ea9n kh\u00e1c nhau \u0111\u00e1p \u1ee9ng c\u1ea3 c\u00f4ng ngh\u1ec7 c\u00f3 d\u00e2y v\u00e0 kh\u00f4ng d\u00e2y, IEEE 802 \u0111\u00e1p \u1ee9ng c\u00e1c nhu c\u1ea7u k\u1ebft n\u1ed1i m\u1ea1ng \u0111a d\u1ea1ng, t\u1eeb m\u1ea1ng LAN quy m\u00f4 nh\u1ecf \u0111\u1ebfn MAN quy m\u00f4 l\u1edbn.<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ed9 tin c\u1eady: C\u00e1c quy tr\u00ecnh th\u1eed nghi\u1ec7m v\u00e0 x\u00e1c nh\u1eadn r\u1ed9ng r\u00e3i li\u00ean quan \u0111\u1ebfn ph\u00e1t tri\u1ec3n ti\u00eau chu\u1ea9n mang l\u1ea1i gi\u1ea3i ph\u00e1p m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n<li>\n<p>S\u1ef1 c\u00f4ng nh\u1eadn c\u1ee7a ng\u00e0nh: C\u00e1c ti\u00eau chu\u1ea9n IEEE 802 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00e0 \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n c\u1ea7u, d\u1eabn \u0111\u1ebfn m\u1ed9t h\u1ec7 sinh th\u00e1i r\u1ed9ng l\u1edbn g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb v\u00e0 thi\u1ebft b\u1ecb t\u01b0\u01a1ng th\u00edch.<\/p>\n<\/li>\n<\/ol>\n<h2>Vi\u1ebft nh\u1eefng lo\u1ea1i IEEE 802 t\u1ed3n t\u1ea1i. S\u1eed d\u1ee5ng b\u1ea3ng v\u00e0 danh s\u00e1ch \u0111\u1ec3 vi\u1ebft.<\/h2>\n<p>H\u1ecd IEEE 802 bao g\u1ed3m nhi\u1ec1u lo\u1ea1i ti\u00eau chu\u1ea9n kh\u00e1c nhau, m\u1ed7i lo\u1ea1i ph\u1ee5c v\u1ee5 nh\u1eefng m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch m\u1ed9t s\u1ed1 lo\u1ea1i ch\u00ednh:<\/p>\n<ol>\n<li>\n<p>Ti\u00eau chu\u1ea9n m\u1ea1ng LAN:<\/p>\n<ul>\n<li>IEEE 802.3 (Ethernet)<\/li>\n<li>IEEE 802.1Q (M\u1ea1ng LAN \u1ea3o \u2013 VLAN)<\/li>\n<li>IEEE 802.1X (Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng d\u1ef1a tr\u00ean c\u1ed5ng)<\/li>\n<li>IEEE 802.1D (Giao th\u1ee9c c\u00e2y bao tr\u00f9m)<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>Ti\u00eau chu\u1ea9n m\u1ea1ng LAN kh\u00f4ng d\u00e2y (Wi-Fi):<\/p>\n<ul>\n<li>IEEE 802.11a\/b\/g\/n\/ac\/ax<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>Ti\u00eau chu\u1ea9n m\u1ea1ng khu v\u1ef1c c\u00e1 nh\u00e2n kh\u00f4ng d\u00e2y (WPAN):<\/p>\n<ul>\n<li>IEEE 802.15.1 (Bluetooth)<\/li>\n<li>IEEE 802.15.4 (Zigbee)<\/li>\n<li>IEEE 802.15.6 (M\u1ea1ng v\u00f9ng c\u01a1 th\u1ec3 y t\u1ebf \u2013 MBAN)<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>Ti\u00eau chu\u1ea9n m\u1ea1ng khu v\u1ef1c \u0111\u00f4 th\u1ecb (MAN):<\/p>\n<ul>\n<li>IEEE 802.16 (WiMAX)<\/li>\n<li>IEEE 802.22 (M\u1ea1ng khu v\u1ef1c kh\u00f4ng d\u00e2y \u2013 WRAN)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng IEEE 802, 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<p>C\u00e1c ti\u00eau chu\u1ea9n IEEE 802 t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/p>\n<ol>\n<li>\n<p><strong>M\u1ea1ng doanh nghi\u1ec7p:<\/strong> IEEE 802.3 (Ethernet) v\u00e0 IEEE 802.11 (Wi-Fi) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng c\u00f4ng ty \u0111\u1ec3 cung c\u1ea5p k\u1ebft n\u1ed1i nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady cho m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>Nh\u00e0 th\u00f4ng minh v\u00e0 IoT:<\/strong> Wi-Fi (IEEE 802.11) v\u00e0 Bluetooth (IEEE 802.15.1) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u00e0 th\u00f4ng minh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb Internet of Things (IoT), cho ph\u00e9p li\u00ean l\u1ea1c v\u00e0 \u0111i\u1ec1u khi\u1ec3n li\u1ec1n m\u1ea1ch.<\/p>\n<\/li>\n<li>\n<p><strong>T\u01b0\u0323 \u0111\u00f4\u0323ng trong c\u00f4ng nghi\u00ea\u0323p:<\/strong> Ethernet (IEEE 802.3) ph\u1ed5 bi\u1ebfn trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p \u0111\u1ec3 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh v\u00e0 trao \u0111\u1ed5i d\u1eef li\u1ec7u gi\u1eefa m\u00e1y m\u00f3c v\u00e0 h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>Vi\u1ec5n th\u00f4ng:<\/strong> WiMAX (IEEE 802.16) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cung c\u1ea5p truy c\u1eadp b\u0103ng th\u00f4ng r\u1ed9ng kh\u00f4ng d\u00e2y t\u1ea7m xa \u0111\u1ebfn c\u00e1c v\u00f9ng s\u00e2u v\u00f9ng xa, n\u01a1i c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f3 d\u00e2y truy\u1ec1n th\u1ed1ng \u0111ang g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c tri\u1ec3n khai.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe:<\/strong> IEEE 802.15.6 (MBAN) cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf giao ti\u1ebfp kh\u00f4ng d\u00e2y, h\u1ed7 tr\u1ee3 theo d\u00f5i b\u1ec7nh nh\u00e2n t\u1eeb xa v\u00e0 cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<\/ol>\n<p><strong>Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p:<\/strong><\/p>\n<ul>\n<li>\n<p><strong>Nhi\u1ec5u v\u00e0 t\u1eafc ngh\u1ebdn:<\/strong> Trong m\u1ea1ng kh\u00f4ng d\u00e2y, nhi\u1ec5u v\u00e0 t\u1eafc ngh\u1ebdn c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m s\u1eed d\u1ee5ng b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn hai b\u0103ng t\u1ea7n ho\u1eb7c ba b\u0103ng t\u1ea7n v\u00e0 tri\u1ec3n khai c\u01a1 ch\u1ebf Ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS) \u0111\u1ec3 \u01b0u ti\u00ean l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp quan tr\u1ecdng.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 an ninh:<\/strong> M\u1ea1ng kh\u00f4ng d\u00e2y c\u00f3 th\u1ec3 ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, IEEE 802.1X cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng d\u1ef1a tr\u00ean c\u1ed5ng v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n Wi-Fi h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c x\u00e1c th\u1ef1c v\u00e0 m\u00e3 h\u00f3a nh\u01b0 WPA2 (Wi-Fi Protected Access 2) v\u00e0 WPA3.<\/p>\n<\/li>\n<li>\n<p><strong>Nh\u1eefng v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch:<\/strong> Trong c\u00e1c m\u1ea1ng kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, c\u00e1c thi\u1ebft b\u1ecb t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau c\u00f3 th\u1ec3 g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch. Vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n IEEE 802 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 t\u01b0\u01a1ng th\u00edch t\u1ed1t h\u01a1n.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n<p>\u0110\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh gi\u1eefa Ethernet (IEEE 802.3) v\u00e0 Wi-Fi (IEEE 802.11):<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>Ethernet (IEEE 802.3)<\/th>\n<th>Wi-Fi (IEEE 802.11)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn<\/td>\n<td>C\u00e1p \u0111\u1ed3ng xo\u1eafn \u0111\u00f4i<\/td>\n<td>S\u00f3ng radio<\/td>\n<\/tr>\n<tr>\n<td>T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td>10 Mb\/gi\u00e2y \u0111\u1ebfn 100 Mb\/gi\u00e2y<\/td>\n<td>1 Mb\/gi\u00e2y \u0111\u1ebfn 10,53 Gb\/gi\u00e2y (Wi-Fi 6E)<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ea1m vi<\/td>\n<td>Th\u00f4ng th\u01b0\u1eddng gi\u1edbi h\u1ea1n \u1edf 100 m\u00e9t<\/td>\n<td>Kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o th\u1ebf h\u1ec7 Wi-Fi<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh c\u01a1 \u0111\u1ed9ng<\/td>\n<td>K\u1ebft n\u1ed1i c\u00f3 d\u00e2y, c\u1ed1 \u0111\u1ecbnh<\/td>\n<td>Kh\u00f4ng d\u00e2y, cho ph\u00e9p di chuy\u1ec3n<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3o v\u1ec7<\/td>\n<td>N\u00f3i chung an to\u00e0n h\u01a1n (v\u1eadt l\u00fd)<\/td>\n<td>Y\u00eau c\u1ea7u m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c<\/td>\n<\/tr>\n<tr>\n<td>S\u1ef1 can thi\u1ec7p<\/td>\n<td>D\u1ec5 b\u1ecb \u0111i\u1ec7n t\u1eeb<\/td>\n<td>B\u1ecb nhi\u1ec5u t\u00edn hi\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>nhi\u1ec5u v\u00e0 nhi\u1ec5u xuy\u00ean \u00e2m<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn IEEE 802<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a IEEE 802 c\u00f3 nhi\u1ec1u tri\u1ec3n v\u1ecdng v\u00e0 ti\u1ebfn b\u1ed9 th\u00fa v\u1ecb:<\/p>\n<ol>\n<li>\n<p><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n:<\/strong> Khi nhu c\u1ea7u truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n t\u0103ng l\u00ean, c\u00e1c phi\u00ean b\u1ea3n Wi-Fi trong t\u01b0\u01a1ng lai (v\u00ed d\u1ee5: IEEE 802.11be) d\u1ef1 ki\u1ebfn s\u1ebd mang l\u1ea1i t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>Ti\u00eau chu\u1ea9n IoT c\u00f4ng su\u1ea5t th\u1ea5p:<\/strong> V\u1edbi s\u1ef1 m\u1edf r\u1ed9ng c\u1ee7a Internet of Things, c\u00e1c ti\u00eau chu\u1ea9n IEEE 802 m\u1edbi ph\u1ee5c v\u1ee5 cho c\u00e1c thi\u1ebft b\u1ecb IoT t\u1ea7m xa, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p c\u00f3 th\u1ec3 s\u1ebd xu\u1ea5t hi\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p 5G:<\/strong> C\u00f3 s\u1ef1 h\u1ed9i t\u1ee5 ng\u00e0y c\u00e0ng t\u0103ng gi\u1eefa c\u00f4ng ngh\u1ec7 di \u0111\u1ed9ng IEEE 802.11 (Wi-Fi) v\u00e0 5G, cho ph\u00e9p chuy\u1ec3n giao li\u1ec1n m\u1ea1ch gi\u1eefa Wi-Fi v\u00e0 m\u1ea1ng di \u0111\u1ed9ng.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ea2o h\u00f3a m\u1ea1ng:<\/strong> C\u00e1c ti\u00eau chu\u1ea9n IEEE 802 trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c k\u1ef9 thu\u1eadt \u1ea3o h\u00f3a m\u1ea1ng, t\u0103ng c\u01b0\u1eddng t\u00ednh linh ho\u1ea1t v\u00e0 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean.<\/p>\n<\/li>\n<li>\n<p><strong>C\u1ea3i ti\u1ebfn b\u1ea3o m\u1eadt:<\/strong> \u0110\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt \u0111ang gia t\u0103ng, c\u00e1c ti\u00eau chu\u1ea9n IEEE 802 s\u1eafp t\u1edbi c\u00f3 th\u1ec3 s\u1ebd gi\u1edbi thi\u1ec7u c\u00e1c c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c v\u00e0 m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi IEEE 802<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1eadn d\u1ee5ng l\u1ee3i \u00edch c\u1ee7a c\u00f4ng ngh\u1ec7 IEEE 802. M\u1ed9t s\u1ed1 c\u00e1ch c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi IEEE 802 bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Quy\u1ec1n ri\u00eang t\u01b0 n\u00e2ng cao:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 Internet, cung c\u1ea5p th\u00eam l\u1edbp b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 trong khi s\u1eed d\u1ee5ng c\u00e1c m\u1ea1ng kh\u00f4ng d\u00e2y nh\u01b0 Wi-Fi.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd b\u0103ng th\u00f4ng:<\/strong> Trong c\u00e1c t\u1ed5 ch\u1ee9c ho\u1eb7c m\u1ea1ng Wi-Fi c\u00f4ng c\u1ed9ng, proxy c\u00f3 th\u1ec3 gi\u00fap qu\u1ea3n l\u00fd vi\u1ec7c s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng, t\u1ed1i \u01b0u h\u00f3a t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 \u0111\u1ea3m b\u1ea3o ph\u00e2n ph\u1ed1i c\u00f4ng b\u1eb1ng gi\u1eefa nh\u1eefng ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ecdc n\u1ed9i dung:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 l\u1ecdc n\u1ed9i dung, h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0o m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh v\u00e0 \u0111\u1ea3m b\u1ea3o m\u00f4i tr\u01b0\u1eddng m\u1ea1ng an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>T\u0103ng t\u1ed1c ph\u00e2n ph\u1ed1i n\u1ed9i dung:<\/strong> B\u1eb1ng c\u00e1ch l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m n\u1ed9i dung \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c m\u1ea1ng b\u1ecb t\u1eafc ngh\u1ebdn.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ecf qua \u1ea9n danh v\u00e0 h\u1ea1n ch\u1ebf \u0111\u1ecba l\u00fd:<\/strong> Proxy c\u00f3 th\u1ec3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng b\u1ecf qua c\u00e1c gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd tr\u00ean m\u1ed9t s\u1ed1 trang web ho\u1eb7c d\u1ecbch v\u1ee5 nh\u1ea5t \u0111\u1ecbnh v\u00e0 duy tr\u00ec t\u00ednh \u1ea9n danh b\u1eb1ng c\u00e1ch che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a h\u1ecd.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 IEEE 802, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/standards.ieee.org\/\" target=\"_new\" rel=\"noopener nofollow\">Hi\u1ec7p h\u1ed9i ti\u00eau chu\u1ea9n IEEE<\/a><\/li>\n<li><a href=\"https:\/\/www.ieee802.org\/\" target=\"_new\" rel=\"noopener nofollow\">\u1ee6y ban Ti\u00eau chu\u1ea9n IEEE 802 LAN\/MAN<\/a><\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch kh\u00e1m ph\u00e1 nh\u1eefng t\u00e0i nguy\u00ean n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u00e1c ti\u00eau chu\u1ea9n IEEE 802 kh\u00e1c nhau v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u00fang trong c\u00e1c c\u00f4ng ngh\u1ec7 m\u1ea1ng v\u00e0 truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p>","protected":false},"featured_media":477550,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477549","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>IEEE 802: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is IEEE 802?","answer":"<p>IEEE 802 is a family of standards developed by the Institute of Electrical and Electronics Engineers (IEEE) for defining Local Area Network (LAN) and Metropolitan Area Network (MAN) technologies. It encompasses a wide range of protocols, including Ethernet, Wi-Fi, and more, ensuring seamless connectivity across devices and systems.<\/p>"},{"question":"How did IEEE 802 originate?","answer":"<p>The roots of IEEE 802 trace back to the early 1980s when the Ethernet Technical Committee (ETC) was formed to standardize LAN technologies. In 1983, it became part of the IEEE, leading to the creation of the IEEE 802 project, focusing on LAN\/MAN standards.<\/p>"},{"question":"What are some key IEEE 802 standards?","answer":"<p>Some notable IEEE 802 standards include:<\/p><ul><li>IEEE 802.3 (Ethernet)<\/li><li>IEEE 802.11 (Wi-Fi)<\/li><li>IEEE 802.1Q (VLANs)<\/li><li>IEEE 802.15 (Wireless Personal Area Network - WPAN)<\/li><li>IEEE 802.16 (WiMAX)<\/li><li>IEEE 802.22 (Wireless Regional Area Network - WRAN)<\/li><\/ul>"},{"question":"How does IEEE 802 work?","answer":"<p>IEEE 802 follows a hierarchical structure with working groups assigned to specific standards. Each working group is identified by a numeric value (e.g., IEEE 802.11 for Wi-Fi). The standards development process involves study groups, task groups, and thorough balloting for approval.<\/p>"},{"question":"What are the key features of IEEE 802?","answer":"<p>IEEE 802 offers interoperability, scalability, versatility, reliability, and global recognition. Its standards ensure seamless communication between devices, adapt to evolving technologies, and cover various networking needs.<\/p>"},{"question":"What types of IEEE 802 exist?","answer":"<p>IEEE 802 encompasses LAN, wireless LAN, WPAN, and MAN standards. Some examples are Ethernet (IEEE 802.3), Wi-Fi (IEEE 802.11), Bluetooth (IEEE 802.15.1), WiMAX (IEEE 802.16), and more.<\/p>"},{"question":"How is IEEE 802 used, and what are the challenges?","answer":"<p>IEEE 802 is widely used in enterprise networks, IoT, industrial automation, and telecommunications. Challenges include interference, security concerns, and compatibility issues. Solutions involve advanced routers, encryption, and adherence to IEEE 802 standards.<\/p>"},{"question":"What are the future prospects of IEEE 802?","answer":"<p>The future holds higher data rates, low-power IoT standards, integration with 5G, network virtualization, and enhanced security measures within IEEE 802.<\/p>"},{"question":"How do proxy servers relate to IEEE 802?","answer":"<p>Proxy servers enhance privacy, manage bandwidth, filter content, and accelerate data delivery in IEEE 802 networks. They act as intermediaries, providing additional security and efficiency for users.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477549","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\/477549\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477550"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}