{"id":478327,"date":"2023-08-09T09:31:12","date_gmt":"2023-08-09T09:31:12","guid":{"rendered":""},"modified":"2023-09-05T11:16:30","modified_gmt":"2023-09-05T11:16:30","slug":"packet-switching","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/packet-switching\/","title":{"rendered":"Chuy\u1ec3n m\u1ea1ch g\u00f3i"},"content":{"rendered":"<p>Chuy\u1ec3n m\u1ea1ch g\u00f3i l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 c\u01a1 b\u1ea3n t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i. \u0110\u00f3 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n d\u1eef li\u1ec7u qua m\u1ea1ng b\u1eb1ng c\u00e1ch chia d\u1eef li\u1ec7u th\u00e0nh c\u00e1c g\u00f3i nh\u1ecf h\u01a1n, sau \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ed9c l\u1eadp v\u00e0 t\u1eadp h\u1ee3p l\u1ea1i t\u1ea1i \u0111\u00edch \u0111\u1ebfn. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a c\u00e1ch truy\u1ec1n th\u00f4ng tin, cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 c\u1ea3i thi\u1ec7n vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea1ng.<\/p>\n<h2>L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a chuy\u1ec3n m\u1ea1ch g\u00f3i v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m chuy\u1ec3n m\u1ea1ch g\u00f3i ban \u0111\u1ea7u \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1960 b\u1edfi Paul Baran, m\u1ed9t k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh ng\u01b0\u1eddi M\u1ef9, nh\u01b0 m\u1ed9t ph\u1ea7n trong nghi\u00ean c\u1ee9u c\u1ee7a \u00f4ng cho T\u1eadp \u0111o\u00e0n RAND c\u1ee7a B\u1ed9 Qu\u1ed1c ph\u00f2ng Hoa K\u1ef3. C\u00f4ng vi\u1ec7c c\u1ee7a Baran nh\u1eb1m m\u1ee5c \u0111\u00edch t\u1ea1o ra m\u1ed9t m\u1ea1ng l\u01b0\u1edbi li\u00ean l\u1ea1c m\u1ea1nh m\u1ebd v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u1ed3n t\u1ea1i, c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c s\u1ef1 ph\u00e1 h\u1ee7y m\u1ed9t ph\u1ea7n do m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng h\u1ea1t nh\u00e2n trong Chi\u1ebfn tranh L\u1ea1nh.<\/p>\n<p>B\u00e0i b\u00e1o n\u1ed5i ti\u1ebfng n\u0103m 1964 c\u1ee7a \u00f4ng, \u201cV\u1ec1 Truy\u1ec1n th\u00f4ng Ph\u00e2n t\u00e1n: I. Gi\u1edbi thi\u1ec7u v\u1ec1 M\u1ea1ng Truy\u1ec1n th\u00f4ng Ph\u00e2n t\u00e1n,\u201d \u0111\u00e3 \u0111\u1eb7t n\u1ec1n m\u00f3ng cho \u00fd t\u01b0\u1edfng chia d\u1eef li\u1ec7u th\u00e0nh c\u00e1c kh\u1ed1i nh\u1ecf ho\u1eb7c \u201cg\u00f3i\u201d \u0111\u1ec3 truy\u1ec1n t\u1ea3i hi\u1ec7u qu\u1ea3. M\u1eb7c d\u00f9 c\u00f4ng vi\u1ec7c c\u1ee7a Baran kh\u00f4ng tr\u1ef1c ti\u1ebfp d\u1eabn \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u1ea7u ti\u00ean nh\u01b0ng n\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ARPANET, ti\u1ec1n th\u00e2n c\u1ee7a Internet ng\u00e0y nay.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 chuy\u1ec3n m\u1ea1ch g\u00f3i. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 Chuy\u1ec3n m\u1ea1ch g\u00f3i<\/h2>\n<p>Chuy\u1ec3n m\u1ea1ch g\u00f3i li\u00ean quan \u0111\u1ebfn vi\u1ec7c chia d\u1eef li\u1ec7u th\u00e0nh c\u00e1c \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 g\u00f3i, m\u1ed7i g\u00f3i c\u00f3 ti\u00eau \u0111\u1ec1 ri\u00eang ch\u1ee9a th\u00f4ng tin \u0111\u1ecbnh tuy\u1ebfn c\u1ea7n thi\u1ebft. C\u00e1c g\u00f3i n\u00e0y c\u00f3 th\u1ec3 \u0111i theo c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ebfn \u0111\u00edch v\u00e0 th\u1eadm ch\u00ed ch\u00fang c\u00f3 th\u1ec3 \u0111\u1ebfn kh\u00f4ng theo th\u1ee9 t\u1ef1. \u1ede \u0111\u1ea7u nh\u1eadn, c\u00e1c g\u00f3i \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p l\u1ea1i \u0111\u1ec3 x\u00e2y d\u1ef1ng l\u1ea1i d\u1eef li\u1ec7u g\u1ed1c.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t g\u00f3i bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>Ti\u00eau \u0111\u1ec1:<\/strong> Ch\u1ee9a \u0111\u1ecba ch\u1ec9 ngu\u1ed3n v\u00e0 \u0111\u00edch c\u0169ng nh\u01b0 th\u00f4ng tin b\u1ed5 sung c\u1ea7n thi\u1ebft cho vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn v\u00e0 ki\u1ec3m tra l\u1ed7i.<\/li>\n<li><strong>Kh\u1ed1i h\u00e0ng:<\/strong> D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i c\u00f3 th\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ng v\u00e0 c\u00e1c giao th\u1ee9c c\u1ee7a n\u00f3.<\/li>\n<li><strong>\u0110o\u1ea1n phim gi\u1edbi thi\u1ec7u:<\/strong> Ch\u1ee9a th\u00f4ng tin ki\u1ec3m tra l\u1ed7i, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ed5ng ki\u1ec3m tra, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u.<\/li>\n<\/ol>\n<p>Chuy\u1ec3n m\u1ea1ch g\u00f3i cung c\u1ea5p m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf so v\u1edbi c\u00e1c m\u1ea1ng chuy\u1ec3n m\u1ea1ch k\u00eanh truy\u1ec1n th\u1ed1ng, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Hi\u1ec7u qu\u1ea3:<\/strong> Chuy\u1ec3n m\u1ea1ch g\u00f3i cho ph\u00e9p s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean m\u1ea1ng t\u1ed1t h\u01a1n v\u00ec nhi\u1ec1u g\u00f3i c\u00f3 th\u1ec3 chia s\u1ebb c\u00f9ng m\u1ed9t k\u00eanh li\u00ean l\u1ea1c c\u00f9ng m\u1ed9t l\u00fac.<\/li>\n<li><strong>\u0110\u1ed9 b\u1ec1n:<\/strong> V\u00ec d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c g\u00f3i n\u00ean s\u1ef1 c\u1ed1 c\u1ee7a m\u1ed9t li\u00ean k\u1ebft \u0111\u01a1n l\u1ebb kh\u00f4ng d\u1eabn \u0111\u1ebfn m\u1ea5t li\u00ean l\u1ea1c ho\u00e0n to\u00e0n.<\/li>\n<li><strong>Uy\u1ec3n chuy\u1ec3n:<\/strong> C\u00e1c g\u00f3i kh\u00e1c nhau c\u00f3 th\u1ec3 \u0111i theo c\u00e1c \u0111\u01b0\u1eddng d\u1eabn kh\u00e1c nhau \u0111\u1ebfn \u0111\u00edch, th\u00edch \u1ee9ng v\u1edbi nh\u1eefng thay \u0111\u1ed5i trong c\u1ea5u tr\u00fac li\u00ean k\u1ebft m\u1ea1ng.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong> Khi l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng t\u0103ng l\u00ean, chuy\u1ec3n m\u1ea1ch g\u00f3i s\u1ebd m\u1edf r\u1ed9ng quy m\u00f4 hi\u1ec7u qu\u1ea3 h\u01a1n chuy\u1ec3n m\u1ea1ch k\u00eanh.<\/li>\n<\/ul>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a chuy\u1ec3n m\u1ea1ch g\u00f3i. C\u00e1ch chuy\u1ec3n m\u1ea1ch g\u00f3i ho\u1ea1t \u0111\u1ed9ng<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a m\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i bao g\u1ed3m m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>Thu\u1eadt to\u00e1n \u0111\u1ecbnh tuy\u1ebfn:<\/strong> C\u00e1c thu\u1eadt to\u00e1n n\u00e0y x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng d\u1eabn hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 m\u1ed7i g\u00f3i \u0111i t\u1eeb ngu\u1ed3n t\u1edbi \u0111\u00edch. H\u1ecd xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 t\u1eafc ngh\u1ebdn m\u1ea1ng, ch\u1ea5t l\u01b0\u1ee3ng li\u00ean k\u1ebft v\u00e0 b\u0103ng th\u00f4ng kh\u1ea3 d\u1ee5ng.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 chuy\u1ec3n m\u1ea1ch (B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn):<\/strong> B\u1ed9 chuy\u1ec3n m\u1ea1ch l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a m\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i. H\u1ecd ki\u1ec3m tra ti\u00eau \u0111\u1ec1 c\u1ee7a c\u00e1c g\u00f3i \u0111\u1ebfn, \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean thu\u1eadt to\u00e1n \u0111\u1ecbnh tuy\u1ebfn v\u00e0 chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i t\u1edbi b\u01b0\u1edbc nh\u1ea3y ti\u1ebfp theo c\u1ee7a ch\u00fang.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 \u0111\u1ec7m:<\/strong> V\u00ec c\u00e1c g\u00f3i c\u00f3 th\u1ec3 \u0111i theo c\u00e1c \u0111\u01b0\u1eddng d\u1eabn kh\u00e1c nhau v\u00e0 c\u00f3 \u0111\u1ed9 tr\u1ec5 kh\u00e1c nhau n\u00ean vi\u1ec7c \u0111\u1ec7m l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u01b0u tr\u1eef t\u1ea1m th\u1eddi c\u00e1c g\u00f3i t\u1ea1i c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch trong th\u1eddi gian t\u1eafc ngh\u1ebdn.<\/p>\n<\/li>\n<li>\n<p><strong>Gh\u00e9p k\u00eanh:<\/strong> M\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u1ed3ng th\u1eddi nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng c\u00e1ch chia b\u0103ng th\u00f4ng kh\u1ea3 d\u1ee5ng th\u00e0nh c\u00e1c khe th\u1eddi gian ho\u1eb7c k\u00eanh t\u1ea7n s\u1ed1 nh\u1ecf h\u01a1n cho c\u00e1c g\u00f3i c\u1ee7a m\u1ed7i ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a chuy\u1ec3n m\u1ea1ch g\u00f3i<\/h2>\n<p>Chuy\u1ec3n m\u1ea1ch g\u00f3i c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn n\u00f3 kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n d\u1eef li\u1ec7u kh\u00e1c:<\/p>\n<ol>\n<li>\n<p><strong>Truy\u1ec1n th\u00f4ng kh\u00f4ng k\u1ebft n\u1ed1i:<\/strong> Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c m\u1ea1ng chuy\u1ec3n m\u1ea1ch k\u00eanh y\u00eau c\u1ea7u k\u1ebft n\u1ed1i chuy\u00ean d\u1ee5ng trong to\u00e0n b\u1ed9 th\u1eddi gian li\u00ean l\u1ea1c, chuy\u1ec3n m\u1ea1ch g\u00f3i s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng k\u1ebft n\u1ed1i, trong \u0111\u00f3 c\u00e1c g\u00f3i c\u00f3 th\u1ec3 \u0111i theo c\u00e1c \u0111\u01b0\u1eddng d\u1eabn kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ebfn \u0111\u00edch.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u00f3ng g\u00f3i:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c g\u00f3i nh\u1ecf h\u01a1n, cho ph\u00e9p s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 truy\u1ec1n t\u1ea3i nhanh h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u00f4i ph\u1ee5c l\u1ed7i:<\/strong> C\u00e1c giao th\u1ee9c chuy\u1ec3n m\u1ea1ch g\u00f3i th\u01b0\u1eddng bao g\u1ed3m c\u00e1c c\u01a1 ch\u1ebf ph\u00e1t hi\u1ec7n v\u00e0 ph\u1ee5c h\u1ed3i l\u1ed7i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong> M\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u00e1p \u1ee9ng c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u00e1c nhau v\u00e0 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t \u0111\u00e1ng k\u1ec3.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n quy\u1ec1n:<\/strong> B\u1ea3n ch\u1ea5t ph\u00e2n t\u00e1n c\u1ee7a chuy\u1ec3n m\u1ea1ch g\u00f3i cho ph\u00e9p s\u1ef1 m\u1ea1nh m\u1ebd v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi nh\u1eefng thay \u0111\u1ed5i trong m\u1ea1ng.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i chuy\u1ec3n m\u1ea1ch g\u00f3i<\/h2>\n<p>C\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i chuy\u1ec3n m\u1ea1ch g\u00f3i, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ri\u00eang. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chuy\u1ec3n m\u1ea1ch g\u00f3i Datagram<\/td>\n<td>M\u1ed7i g\u00f3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u1ed9c l\u1eadp v\u00e0 c\u00f3 th\u1ec3 \u0111i theo c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ebfn \u0111\u00edch.<\/td>\n<\/tr>\n<tr>\n<td>Chuy\u1ec3n m\u1ea1ch \u1ea3o<\/td>\n<td>Thi\u1ebft l\u1eadp \u0111\u01b0\u1eddng d\u1eabn \u1ea3o gi\u1eefa ngu\u1ed3n v\u00e0 \u0111\u00edch tr\u01b0\u1edbc khi truy\u1ec1n g\u00f3i d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td>Chuy\u1ec3n tin nh\u1eafn<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c tin nh\u1eafn v\u00e0 m\u1ed7i tin nh\u1eafn \u0111\u01b0\u1ee3c truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng to\u00e0n b\u1ed9 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch.<\/td>\n<\/tr>\n<tr>\n<td>R\u01a1le di \u0111\u1ed9ng<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c \u00f4 c\u00f3 k\u00edch th\u01b0\u1edbc c\u1ed1 \u0111\u1ecbnh v\u00e0 c\u00e1c \u00f4 n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n qua m\u1ea1ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng Chuy\u1ec3n m\u1ea1ch g\u00f3i, 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>Chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Truy\u1ec1n th\u00f4ng Internet:<\/strong> Internet d\u1ef1a v\u00e0o chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u1ec3 cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u to\u00e0n c\u1ea7u gi\u1eefa h\u00e0ng tri\u1ec7u thi\u1ebft b\u1ecb.<\/p>\n<\/li>\n<li>\n<p><strong>Tho\u1ea1i qua IP (VoIP):<\/strong> D\u1ecbch v\u1ee5 VoIP s\u1eed d\u1ee5ng chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u tho\u1ea1i hi\u1ec7u qu\u1ea3 qua internet.<\/p>\n<\/li>\n<li>\n<p><strong>Truy\u1ec1n ph\u00e1t video:<\/strong> N\u1ec1n t\u1ea3ng ph\u00e1t tr\u1ef1c tuy\u1ebfn s\u1eed d\u1ee5ng chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u1ec3 cung c\u1ea5p n\u1ed9i dung \u0111a ph\u01b0\u01a1ng ti\u1ec7n cho ng\u01b0\u1eddi d\u00f9ng trong th\u1eddi gian th\u1ef1c.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u01a1i game tr\u1ef1c tuy\u1ebfn:<\/strong> Chuy\u1ec3n m\u1ea1ch g\u00f3i cho ph\u00e9p li\u00ean l\u1ea1c theo th\u1eddi gian th\u1ef1c gi\u1eefa nh\u1eefng ng\u01b0\u1eddi ch\u01a1i trong tr\u00f2 ch\u01a1i tr\u1ef1c tuy\u1ebfn.<\/p>\n<\/li>\n<\/ol>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0ng chuy\u1ec3n m\u1ea1ch g\u00f3i ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c:<\/p>\n<ul>\n<li>\n<p><strong>S\u1ef1 t\u1eafc ngh\u1ebdn:<\/strong> L\u01b0u l\u01b0\u1ee3ng m\u1ea1ng l\u1edbn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t g\u00f3i v\u00e0 t\u0103ng \u0111\u1ed9 tr\u1ec5. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u01a1 ch\u1ebf Ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS) \u01b0u ti\u00ean d\u1eef li\u1ec7u quan tr\u1ecdng h\u01a1n l\u01b0u l\u01b0\u1ee3ng \u00edt nh\u1ea1y c\u1ea3m v\u1ec1 th\u1eddi gian h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 an ninh:<\/strong> V\u00ec c\u00e1c g\u00f3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ed9c l\u1eadp n\u00ean ch\u00fang c\u00f3 th\u1ec3 b\u1ecb ch\u1eb7n ho\u1eb7c gi\u1ea3 m\u1ea1o trong qu\u00e1 tr\u00ecnh truy\u1ec1n. K\u1ef9 thu\u1eadt m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c m\u1ed1i lo ng\u1ea1i v\u1ec1 b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1eafp x\u1ebfp l\u1ea1i g\u00f3i:<\/strong> C\u00e1c g\u00f3i c\u00f3 th\u1ec3 \u0111\u1ebfn kh\u00f4ng theo th\u1ee9 t\u1ef1, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng. C\u00e1c giao th\u1ee9c nh\u01b0 TCP gi\u00fap s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c g\u00f3i v\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n<\/ul>\n<h2>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<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh gi\u1eefa chuy\u1ec3n m\u1ea1ch g\u00f3i v\u00e0 chuy\u1ec3n m\u1ea1ch k\u00eanh, m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i kh\u00e1c:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>Chuy\u1ec3n m\u1ea1ch g\u00f3i<\/th>\n<th>Chuy\u1ec3n m\u1ea1ch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c g\u00f3i v\u00e0 g\u1eedi \u0111\u1ed9c l\u1eadp.<\/td>\n<td>M\u1ed9t m\u1ea1ch chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp cho to\u00e0n b\u1ed9 phi\u00ean.<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed d\u1ee5ng m\u1ea1ng<\/td>\n<td>Hi\u1ec7u qu\u1ea3 h\u01a1n khi nhi\u1ec1u g\u00f3i chia s\u1ebb m\u1ed9t li\u00ean k\u1ebft.<\/td>\n<td>\u00cdt hi\u1ec7u qu\u1ea3 h\u01a1n do t\u00e0i nguy\u00ean d\u00e0nh ri\u00eang cho m\u1ed7i phi\u00ean.<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n<\/td>\n<td>C\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u00e1c l\u1ed7i m\u1ea1ng do \u0111\u1ecbnh tuy\u1ebfn g\u00f3i.<\/td>\n<td>D\u1ec5 b\u1ecb h\u1ecfng ho\u00e0n to\u00e0n n\u1ebfu m\u1ea1ch \u0111i\u1ec7n b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebft l\u1eadp th\u1eddi gian<\/td>\n<td>Th\u1eddi gian thi\u1ebft l\u1eadp t\u1ed1i thi\u1ec3u cho m\u1ed7i l\u1ea7n truy\u1ec1n g\u00f3i.<\/td>\n<td>Th\u1eddi gian thi\u1ebft l\u1eadp l\u00e2u h\u01a1n \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t m\u1ea1ch chuy\u00ean d\u1ee5ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn chuy\u1ec3n m\u1ea1ch g\u00f3i<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, m\u1ed9t s\u1ed1 xu h\u01b0\u1edbng v\u00e0 ti\u1ebfn b\u1ed9 li\u00ean quan \u0111\u1ebfn chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u01b0\u1ee3c mong \u0111\u1ee3i:<\/p>\n<ol>\n<li>\n<p><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u nhanh h\u01a1n:<\/strong> S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u1ea1ng nhanh h\u01a1n v\u00e0 c\u00f4ng ngh\u1ec7 chuy\u1ec3n m\u1ea1ch g\u00f3i t\u1ed1c \u0111\u1ed9 cao s\u1ebd cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p 5G:<\/strong> Vi\u1ec7c t\u00edch h\u1ee3p chuy\u1ec3n m\u1ea1ch g\u00f3i v\u1edbi m\u1ea1ng 5G s\u1ebd gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb Internet of Things (IoT).<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u1ea7n m\u1ec1m (SDN):<\/strong> SDN cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m so\u00e1t chuy\u1ec3n m\u1ea1ch g\u00f3i hi\u1ec7u qu\u1ea3 h\u01a1n, d\u1eabn \u0111\u1ebfn vi\u1ec7c ph\u00e2n b\u1ed5 v\u00e0 t\u1ed1i \u01b0u h\u00f3a t\u00e0i nguy\u00ean m\u1ea1ng t\u1ed1t h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>C\u1eaft m\u1ea1ng:<\/strong> C\u00f4ng ngh\u1ec7 n\u00e0y cho ph\u00e9p t\u1ea1o ra c\u00e1c m\u1ea1ng \u1ea3o v\u1edbi c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n g\u00f3i cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111a d\u1ea1ng.<\/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 chuy\u1ec3n m\u1ea1ch g\u00f3i<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd v\u1edbi chuy\u1ec3n m\u1ea1ch g\u00f3i v\u00ec ch\u00fang \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00edch. Khi m\u00e1y kh\u00e1ch y\u00eau c\u1ea7u d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 t\u1eeb xa, m\u00e1y ch\u1ee7 proxy s\u1ebd ch\u1eb7n y\u00eau c\u1ea7u \u0111\u00f3, thay m\u1eb7t m\u00e1y kh\u00e1ch t\u00ecm n\u1ea1p d\u1eef li\u1ec7u v\u00e0 chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u \u0111\u00f3 tr\u1edf l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m chuy\u1ec3n m\u1ea1ch g\u00f3i \u0111\u1ec3 truy\u1ec1n c\u00e1c g\u00f3i d\u1eef li\u1ec7u gi\u1eefa m\u00e1y kh\u00e1ch, m\u00e1y ch\u1ee7 proxy v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00edch.<\/p>\n<p>M\u00e1y ch\u1ee7 proxy cung c\u1ea5p m\u1ed9t s\u1ed1 l\u1ee3i \u00edch:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ed9 nh\u1edb \u0111\u1ec7m:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u th\u01b0\u1eddng xuy\u00ean v\u00e0o b\u1ed9 \u0111\u1ec7m, gi\u1ea3m nhu c\u1ea7u t\u00ecm n\u1ea1p d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 \u0111\u00edch m\u1ed7i l\u1ea7n, gi\u00fap c\u1ea3i thi\u1ec7n th\u1eddi gian ph\u1ea3n h\u1ed3i.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ea8n danh v\u00e0 b\u1ea3o m\u1eadt:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a kh\u00e1ch h\u00e0ng, cung c\u1ea5p m\u1ee9c \u0111\u1ed9 \u1ea9n danh v\u00e0 c\u0169ng c\u00f3 th\u1ec3 th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ecdc n\u1ed9i dung:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 trang web ho\u1eb7c n\u1ed9i dung nh\u1ea5t \u0111\u1ecbnh, t\u0103ng c\u01b0\u1eddng t\u00ednh tu\u00e2n th\u1ee7 v\u00e0 b\u1ea3o m\u1eadt m\u1ea1ng.<\/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 chuy\u1ec3n m\u1ea1ch g\u00f3i, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/solutions\/collateral\/service-provider\/ip-ngn-ip-next-generation-network\/white_paper_c11-481360.html\" target=\"_new\" rel=\"noopener nofollow\">Hi\u1ec3u chuy\u1ec3n m\u1ea1ch g\u00f3i<\/a><\/li>\n<li><a href=\"https:\/\/www.verizon.com\/business\/learn\/technology\/packet-switching\" target=\"_new\" rel=\"noopener nofollow\">Chuy\u1ec3n m\u1ea1ch g\u00f3i \u2013 N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li>\n<li><a href=\"https:\/\/ethw.org\/Packet_Switching:_A_Brief_History_of_the_Internet_Protocol\" target=\"_new\" rel=\"noopener nofollow\">S\u01a1 l\u01b0\u1ee3c v\u1ec1 l\u1ecbch s\u1eed chuy\u1ec3n m\u1ea1ch g\u00f3i<\/a><\/li>\n<\/ol>","protected":false},"featured_media":469099,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478327","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Packet Switching: The Backbone of Modern Data Communication<\/mark>","faq_items":[{"question":"<strong>What is packet switching?<\/strong>","answer":"<p>Packet switching is a fundamental technology used in modern data communication systems. It involves breaking data into smaller packets, each with its own header containing routing information. These packets are sent independently and reassembled at their destination, allowing for efficient data exchange and improved network utilization.<\/p>"},{"question":"<strong>Who proposed the concept of packet switching?<\/strong>","answer":"<p>The concept of packet switching was proposed by Paul Baran in the early 1960s. He was an American engineer and computer scientist working for the RAND Corporation. His research aimed to create a robust communication network that could withstand partial destruction caused by a nuclear attack during the Cold War.<\/p>"},{"question":"<strong>What are the advantages of packet switching over traditional circuit switching?<\/strong>","answer":"<p>Packet switching offers several advantages, including:<\/p><ul><li><strong>Efficiency:<\/strong> Multiple packets can share the same communication channel simultaneously, optimizing network resources.<\/li><li><strong>Robustness:<\/strong> Partial network failures do not lead to complete communication loss, as packets can take different paths.<\/li><li><strong>Flexibility:<\/strong> Packets can adapt to changes in network topology by following varied routes.<\/li><li><strong>Scalability:<\/strong> Packet switching scales more efficiently as network traffic increases.<\/li><\/ul>"},{"question":"<strong>How does packet switching work internally?<\/strong>","answer":"<p>The internal structure of packet switching networks includes routing algorithms, switches (routers), buffering, and multiplexing. Routing algorithms determine the most efficient path for each packet, switches forward packets based on routing decisions, buffering temporarily stores packets during congestion, and multiplexing divides available bandwidth for multiple users.<\/p>"},{"question":"<strong>What are the types of packet switching?<\/strong>","answer":"<p>There are several types of packet switching, including:<\/p><ul><li><strong>Datagram Packet Switching:<\/strong> Each packet takes different routes to reach its destination.<\/li><li><strong>Virtual Circuit Switching:<\/strong> Virtual paths are established before transmitting data packets.<\/li><li><strong>Message Switching:<\/strong> Data is divided into messages and transmitted as a whole between switches.<\/li><li><strong>Cell Relay:<\/strong> Data is divided into fixed-size cells and switched across the network.<\/li><\/ul>"},{"question":"<strong>How is packet switching used in the real world?<\/strong>","answer":"<p>Packet switching is extensively used in various applications, such as Internet communication, VoIP services, video streaming, and online gaming. Its efficiency and flexibility make it a key technology in modern data networks.<\/p>"},{"question":"<strong>What challenges does packet switching face?<\/strong>","answer":"<p>Packet switching may encounter challenges like congestion, security concerns, and packet reordering. Quality of Service (QoS) mechanisms address congestion, encryption ensures security, and protocols like TCP help reorder packets for reliable data delivery.<\/p>"},{"question":"<strong>What are the future perspectives of packet switching?<\/strong>","answer":"<p>The future of packet switching involves faster data rates, integration with 5G networks, Software-Defined Networking (SDN), and network slicing. These advancements will lead to improved performance, efficiency, and customization in data transmission.<\/p>"},{"question":"<strong>How are proxy servers associated with packet switching?<\/strong>","answer":"<p>Proxy servers act as intermediaries between clients and destination servers. They use packet switching to fetch data on behalf of clients and relay it back, offering benefits like caching, anonymity, and content filtering.<\/p>"},{"question":"<strong>Where can I find more information about packet switching?<\/strong>","answer":"<p>For more in-depth information about packet switching, you can refer to the following resources:<\/p><ol><li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/solutions\/collateral\/service-provider\/ip-ngn-ip-next-generation-network\/white_paper_c11-481360.html\" target=\"_new\">Understanding Packet Switching<\/a><\/li><li><a href=\"https:\/\/www.verizon.com\/business\/learn\/technology\/packet-switching\" target=\"_new\">Packet Switching - How Does It Work?<\/a><\/li><li><a href=\"https:\/\/ethw.org\/Packet_Switching:_A_Brief_History_of_the_Internet_Protocol\" target=\"_new\">A Brief History of Packet Switching<\/a><\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478327","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\/478327\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/469099"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=478327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}