{"id":4690,"date":"2025-10-16T11:12:00","date_gmt":"2025-10-16T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-an-ipv4-address-and-why-ipv4-addresses-matter\/"},"modified":"2026-06-22T06:17:16","modified_gmt":"2026-06-22T06:17:16","slug":"what-is-an-ipv4-address-and-why-ipv4-addresses-matter","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/vi\/glossary\/what-is-an-ipv4-address-and-why-ipv4-addresses-matter","title":{"rendered":"\u0110\u1ecba ch\u1ec9 IPv4 l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao n\u00f3 quan tr\u1ecdng"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1408\" height=\"768\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f.jpg\" alt=\"What is an IPv4 Address and Why Does It Matter\" class=\"wp-image-4688\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f.jpg 1408w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-300x164.jpg 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-1024x559.jpg 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-768x419.jpg 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-18x10.jpg 18w\" sizes=\"(max-width: 1408px) 100vw, 1408px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ecdi thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi internet\u2014d\u00f9 l\u00e0 m\u00e1y t\u00ednh x\u00e1ch tay, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hay t\u1ee7 l\u1ea1nh th\u00f4ng minh c\u1ee7a b\u1ea1n\u2014\u0111\u1ec1u c\u1ea7n m\u1ed9t \u0111\u1ecbnh danh duy nh\u1ea5t \u0111\u1ec3 giao ti\u1ebfp. \u0110\u00e2y l\u00e0 l\u00fac <strong>IPv4<\/strong> <strong>IPv4<\/strong> <strong>Phi\u00ean b\u1ea3n 4 c\u1ee7a Giao th\u1ee9c Internet<\/strong>, l\u00e0 phi\u00ean b\u1ea3n th\u1ee9 t\u01b0 c\u1ee7a <strong>Internet Protocol (IP)<\/strong> <strong>Internet Protocol (IP)<\/strong> <strong>kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 IPv4<\/strong> v\u1eabn l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a m\u1ed9t ph\u1ea7n l\u1edbn m\u1ea1ng to\u00e0n c\u1ea7u. Vi\u1ec7c hi\u1ec3u r\u00f5 n\u00f3 l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 n\u1eafm \u0111\u01b0\u1ee3c c\u00e1ch internet ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 c\u01a1 b\u1ea3n nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd d\u1eabn b\u1ea1n qua m\u1ecdi \u0111i\u1ec1u b\u1ea1n c\u1ea7n bi\u1ebft, t\u1eeb \u0111\u1ecbnh d\u1ea1ng c\u01a1 b\u1ea3n \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng lai hi\u1ec7n nay.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 T\u00f3m t\u1eaft tr\u1ecdng t\u00e2m<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t <strong>IPv4<\/strong> <strong>IPv4<\/strong> l\u00e0 m\u1ed9t con s\u1ed1 \u0111\u1eb7c bi\u1ec7t d\u00e0nh cho thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n. N\u00f3 gi\u00fap thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn.<\/p><\/li><li><p>\u0110\u1ecba ch\u1ec9 IPv4 s\u1eed d\u1ee5ng b\u1ed1n con s\u1ed1, ph\u00e2n c\u00e1ch nhau b\u1eb1ng d\u1ea5u ch\u1ea5m. \u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang d\u1ec5 \u0111\u1ecdc v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng.<\/p><\/li><li><p>C\u00f3 nhi\u1ec1u lo\u1ea1i \u0111\u1ecba ch\u1ec9 IPv4 kh\u00e1c nhau. M\u1ed9t s\u1ed1 l\u00e0 \u0111\u1ecba ch\u1ec9 c\u00f4ng khai, m\u1ed9t s\u1ed1 l\u00e0 \u0111\u1ecba ch\u1ec9 ri\u00eang t\u01b0. M\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u00f3 vai tr\u00f2 ri\u00eang trong m\u1ea1ng.<\/p><\/li><li><p>IPv4 g\u1eb7p m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea1n ki\u1ec7t \u0111\u1ecba ch\u1ec9. Kh\u00f4ng c\u00f2n \u0111\u1ee7 \u0111\u1ecba ch\u1ec9 duy nh\u1ea5t cho m\u1ecdi thi\u1ebft b\u1ecb.<\/p><\/li><li><p>Hi\u1ec3u r\u00f5 v\u1ec1 IPv4 gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee7a m\u00ecnh hi\u1ec7u qu\u1ea3 h\u01a1n. N\u00f3 c\u0169ng gi\u00fap b\u1ea1n b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 tr\u1ef1c tuy\u1ebfn.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 <strong>\u0110\u1ecba ch\u1ec9 IPv4 ch\u00ednh x\u00e1c l\u00e0 g\u00ec?<\/strong><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>IPv4<\/strong> <strong>IPv4<\/strong> l\u00e0 m\u1ed9t nh\u00e3n s\u1ed1 32 bit \u0111\u01b0\u1ee3c g\u00e1n cho m\u1ed7i thi\u1ebft b\u1ecb tham gia v\u00e0o m\u1ed9t m\u1ea1ng m\u00e1y t\u00ednh s\u1eed d\u1ee5ng Giao th\u1ee9c Internet (Internet Protocol) \u0111\u1ec3 giao ti\u1ebfp. N\u00f3 \u0111\u1ea3m nhi\u1ec7m hai ch\u1ee9c n\u0103ng ch\u00ednh: <strong>nh\u1eadn d\u1ea1ng giao di\u1ec7n m\u1ea1ng<\/strong> and <strong>\u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 v\u1ecb tr\u00ed<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng n\u00f3 nh\u01b0 phi\u00ean b\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a \u0111\u1ecba ch\u1ec9 nh\u00e0 b\u1ea1n. C\u0169ng nh\u01b0 th\u01b0 t\u1eeb c\u1ea7n m\u1ed9t \u0111\u1ecba ch\u1ec9 ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ebfn \u0111\u01b0\u1ee3c b\u1ea1n, c\u00e1c g\u00f3i d\u1eef li\u1ec7u c\u1ea7n m\u1ed9t \u0111\u1ecba ch\u1ec9 \u0111\u00edch <strong>IPv4<\/strong> \u0111\u1ec3 t\u00ecm \u0111\u01b0\u1eddng \u0111\u1ebfn thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u di\u1ec5n ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a m\u1ed9t <strong>IPv4<\/strong> \u0111\u1ecba ch\u1ec9 IPv4 <mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\"> 192.168.1.1 <\/mark>. l\u00e0 k\u00fd hi\u1ec7u th\u1eadp ph\u00e2n c\u00f3 d\u1ea5u ch\u1ea5m (dotted-decimal notation), g\u1ed3m b\u1ed1n octet ph\u00e2n c\u00e1ch nhau b\u1edfi d\u1ea5u ch\u1ea5m. V\u00ed d\u1ee5:.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 <strong>C\u1ea5u tr\u00fac c\u1ee7a \u0111\u1ecba ch\u1ec9 IPv4: C\u00e1c l\u1edbp v\u00e0 ph\u00e2n m\u1ea1ng con (subnetting)<\/strong><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u1ed5 ch\u1ee9c <strong>kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 IPv4<\/strong>, ban \u0111\u1ea7u n\u00f3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c l\u1edbp. Vi\u1ec7c ph\u00e2n lo\u1ea1i n\u00e0y gi\u00fap qu\u1ea3n l\u00fd vi\u1ec7c ph\u00e2n b\u1ed5 <strong>\u0111\u1ecba ch\u1ec9 IP<\/strong> cho c\u00e1c m\u1ea1ng c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y ki\u1ebfn tr\u00fac m\u1ea1ng theo l\u1edbp (classful) ban \u0111\u1ea7u:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>L\u1edbp<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Bit d\u1eabn \u0111\u1ea7u<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi \u0111\u1ecba ch\u1ec9<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u1ee5c \u0111\u00edch<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>L\u1edbp A<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">0<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0 \u0111\u1ebfn 126.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u00e0nh cho c\u00e1c m\u1ea1ng r\u1ea5t l\u1edbn (v\u00ed d\u1ee5: t\u1eadp \u0111o\u00e0n l\u1edbn).<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>L\u1edbp B<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">10<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0 \u0111\u1ebfn 191.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u00e0nh cho c\u00e1c m\u1ea1ng c\u1ee1 trung b\u00ecnh (v\u00ed d\u1ee5: tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc).<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>L\u1edbp C<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">110<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0 \u0111\u1ebfn 223.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u00e0nh cho c\u00e1c m\u1ea1ng nh\u1ecf (v\u00ed d\u1ee5: doanh nghi\u1ec7p nh\u1ecf).<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>L\u1edbp D<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">1110<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0 \u0111\u1ebfn 239.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ef1 tr\u1eef cho c\u00e1c nh\u00f3m multicast.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>L\u1edbp E<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">1111<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0 \u0111\u1ebfn 255.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ef1 tr\u1eef cho m\u1ee5c \u0111\u00edch th\u1eed nghi\u1ec7m.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, m\u00f4 h\u00ecnh m\u1ea1ng theo l\u1edbp (classful networking) k\u00e9m hi\u1ec7u qu\u1ea3 v\u00e0 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng <strong>c\u1ea1n ki\u1ec7t \u0111\u1ecba ch\u1ec9 IPv4<\/strong>. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 ra \u0111\u1eddi c\u1ee7a <strong>\u0110\u1ecbnh tuy\u1ebfn kh\u00f4ng ph\u00e2n l\u1edbp gi\u1eefa c\u00e1c mi\u1ec1n (CIDR)<\/strong>, cho ph\u00e9p ph\u00e2n b\u1ed5 \u0111\u1ecba ch\u1ec9 linh ho\u1ea1t h\u01a1n th\u00f4ng qua <strong>ph\u00e2n m\u1ea1ng con (subnetting)<\/strong>. <strong>Ph\u00e2n m\u1ea1ng con (Subnetting)<\/strong> l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng n\u1ec1n t\u1ea3ng \u0111\u1ed1i v\u1edbi m\u1ecdi qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng nh\u1eb1m <strong>t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t m\u1ea1ng IPv4<\/strong> v\u00e0 qu\u1ea3n l\u00fd vi\u1ec7c ph\u00e2n b\u1ed5 \u0111\u1ecba ch\u1ec9 IP m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"546\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e.webp\" alt=\"IPv4 Address\" class=\"wp-image-4689\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-300x137.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-1024x466.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-768x349.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 So s\u00e1nh IPv4 v\u00e0 IPv6: \u0110\u1ed1i chi\u1ebfu song song<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee7 \u0111\u1ec1 \u0111\u01b0\u1ee3c b\u00e0n lu\u1eadn nhi\u1ec1u nh\u1ea5t trong l\u0129nh v\u1ef1c m\u1ea1ng l\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i t\u1eeb <strong>IPv4 sang IPv6<\/strong>. V\u1eady s\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec? B\u1ea3ng sau \u0111\u00e2y cung c\u1ea5p so s\u00e1nh r\u00f5 r\u00e0ng, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u1ec1 <strong>ph\u1ea7n c\u1ee9ng m\u1ea1ng<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Feature<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>IPv4<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/understanding-ipv6-address-structure-benefits-and-transition\/\"><strong>IPv6<\/strong><\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 d\u00e0i \u0111\u1ecba ch\u1ec9<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>32 bit<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>128 bit<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ea1ng th\u1eadp ph\u00e2n ph\u00e2n t\u00e1ch b\u1eb1ng d\u1ea5u ch\u1ea5m (v\u00ed d\u1ee5: 192.168.1.1)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 th\u1eadp l\u1ee5c ph\u00e2n (v\u00ed d\u1ee5: 2001:0db8:85a3:0000:0000:8a2e:0370:7334)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng 4,3 t\u1ef7<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>G\u1ea7n nh\u01b0 v\u00f4 h\u1ea1n (3,4\u00d710\u00b3\u2078)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u1ea5u h\u00ecnh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ee7 c\u00f4ng ho\u1eb7c DHCP<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ef1 c\u1ea5u h\u00ecnh (kh\u00f4ng tr\u1ea1ng th\u00e1i \u2013 Stateless)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ea3o m\u1eadt<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IPSec t\u00f9y ch\u1ecdn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IPSec t\u00edch h\u1ee3p s\u1eb5n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a ti\u00eau \u0111\u1ec1 (header)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ee9c t\u1ea1p h\u01a1n, \u0111\u1ed9 d\u00e0i thay \u0111\u1ed5i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n gi\u1ea3n h\u01a1n, \u0111\u1ed9 d\u00e0i c\u1ed1 \u0111\u1ecbnh<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 IPv6 cung c\u1ea5p kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 r\u1ed9ng l\u1edbn v\u00e0 c\u00e1c t\u00ednh n\u0103ng hi\u1ec7n \u0111\u1ea1i, qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i to\u00e0n c\u1ea7u v\u1eabn di\u1ec5n ra ch\u1eadm. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 trong t\u01b0\u01a1ng lai g\u1ea7n, h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng s\u1ebd ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng dual-stack, h\u1ed7 tr\u1ee3 c\u1ea3 hai giao th\u1ee9c. Do \u0111\u00f3, vi\u1ec7c n\u1eafm v\u1eefng <strong>c\u00e1ch c\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng IPv4 song song v\u1edbi IPv6<\/strong> l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng then ch\u1ed1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 L\u1edbp v\u1eadt l\u00fd: N\u01a1i IPv4 g\u1eb7p c\u00e1c module quang<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong khi \u0111\u1ecba ch\u1ec9 IP ho\u1ea1t \u0111\u1ed9ng \u1edf <strong>l\u1edbp m\u1ea1ng (L\u1edbp 3)<\/strong> c\u1ee7a m\u00f4 h\u00ecnh OSI, ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 n\u01a1i <strong>module quang<br><\/strong> xu\u1ea5t hi\u1ec7n. M\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>m\u00f4-\u0111un quang<\/strong><\/a>, ho\u1eb7c b\u1ed9 thu ph\u00e1t, l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 th\u1ebb giao di\u1ec7n m\u1ea1ng, c\u00f3 ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh xung \u00e1nh s\u00e1ng, cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\"><strong>fiber optic cables<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eady, \u0111i\u1ec1u n\u00e0y li\u00ean h\u1ec7 nh\u01b0 th\u1ebf n\u00e0o v\u1edbi <strong>IPv4<\/strong>? Khi m\u1ed9t g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ecba ch\u1ec9 IP nh\u01b0 <mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">192.168.1.10<\/mark>, n\u00f3 \u0111i qua m\u1ea1ng c\u1ee5c b\u1ed9 c\u1ee7a b\u1ea1n. N\u1ebfu m\u1ea1ng \u0111\u00f3 tr\u1ea3i r\u1ed9ng tr\u00ean nhi\u1ec1u t\u00f2a nh\u00e0 ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u kh\u00e1c nhau, kh\u1ea3 n\u0103ng cao l\u00e0 n\u00f3 s\u1eed d\u1ee5ng c\u00e1p quang. B\u1ed9 <strong>m\u00f4-\u0111un quang<\/strong> trong b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ea1n ch\u1ecbu tr\u00e1ch nhi\u1ec7m nh\u1eadn g\u00f3i d\u1eef li\u1ec7u\u2014\u0111\u01b0\u1ee3c \u0111\u00f3ng khung v\u1edbi \u0111\u1ecba ch\u1ec9 ngu\u1ed3n v\u00e0 \u0111\u00edch <strong>\u0111\u1ecba ch\u1ec9 IPv4<\/strong>\u2014v\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u00f3 th\u00e0nh m\u1ed9t ch\u00f9m tia s\u00e1ng \u0111\u1ec3 truy\u1ec1n \u0111i qua c\u00e1p quang. Ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a module quang \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 tr\u1ec5 c\u1ee7a c\u00e1c giao ti\u1ebfp d\u1ef1a tr\u00ean IPv4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u su\u1ea5t cao, vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u1ea7n c\u1ee9ng ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. \u0110\u00e2y ch\u00ednh l\u00e0 n\u01a1i m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u chuy\u00ean bi\u1ec7t nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> n\u1ed5i b\u1eadt. C\u00e1c<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>optical transceivers<\/strong><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 hi\u1ec7u qu\u1ea3. M\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh l\u00e0 module <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/buy-ls-mm8510-s3c.htm\"><strong>SFP-10G-SR<br><\/strong><\/a> M\u1eabu c\u1ee5 th\u1ec3 n\u00e0y h\u1ed7 tr\u1ee3 chu\u1ea9n Ethernet 10 Gigabit qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/om1-om2-om3-om4-om5-multimode-fiber-guide\/\"><strong>multimode fiber<\/strong><\/a>, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p l\u00fd t\u01b0\u1edfng \u0111\u1ec3 n\u00e2ng cao kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <strong>c\u00e1c giao th\u1ee9c IPv4<\/strong>. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u00e0nh tr\u00ecnh c\u1ee7a c\u00e1c g\u00f3i tin IPv4 c\u1ee7a b\u1ea1n di\u1ec5n ra nhanh nh\u1ea5t v\u00e0 \u0111\u00e1ng tin c\u1eady nh\u1ea5t c\u00f3 th\u1ec3, t\u1ea1o th\u00e0nh m\u1ed9t c\u1ea7u n\u1ed1i li\u1ec1n m\u1ea1ch gi\u1eefa l\u01b0\u1ee3c \u0111\u1ed3 \u0111\u00e1nh \u0111\u1ecba ch\u1ec9 logic v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng v\u1eadt l\u00fd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 K\u1ebft lu\u1eadn: Di s\u1ea3n l\u00e2u d\u00e0i c\u1ee7a IPv4<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>IPv4<\/strong> c\u00f2n r\u1ea5t xa m\u1edbi l\u1ed7i th\u1eddi. N\u00f3 v\u1eabn l\u00e0 m\u1ed9t tr\u1ee5 c\u1ed9t n\u1ec1n t\u1ea3ng c\u1ee7a internet, v\u00e0 vi\u1ec7c hi\u1ec3u s\u00e2u v\u1ec1 c\u00e1c nguy\u00ean l\u00fd c\u1ee7a n\u00f3 l\u00e0 v\u00f4 c\u00f9ng qu\u00fd gi\u00e1 \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai l\u00e0m vi\u1ec7c trong l\u0129nh v\u1ef1c CNTT ho\u1eb7c m\u1ea1ng m\u00e1y t\u00ednh. T\u1eeb h\u1ec7 th\u1ed1ng l\u1edbp c\u00f3 c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 cho \u0111\u1ebfn s\u1ef1 t\u1ed3n t\u1ea1i song song v\u1edbi IPv6 v\u00e0 s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o ph\u1ea7n c\u1ee9ng hi\u1ec7u n\u0103ng cao nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>c\u00e1c module quang LINK-PP<\/strong><\/a>, IPv4 ti\u1ebfp t\u1ee5c l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 c\u00f2n nguy\u00ean t\u00ednh th\u1eddi s\u1ef1 v\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi b\u1ea1n thi\u1ebft k\u1ebf ho\u1eb7c qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee7a m\u00ecnh, h\u00e3y nh\u1edb r\u1eb1ng m\u1ed9t n\u1ec1n t\u1ea3ng logic v\u1eefng ch\u1eafc (\u0111\u00e1nh \u0111\u1ecba ch\u1ec9 IP) ph\u1ea3i \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u0111\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai v\u00e0 \u0111\u1ecba ch\u1ec9 IPv4 ri\u00eang t\u01b0 l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai cho ph\u00e9p thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n k\u1ebft n\u1ed1i v\u1edbi internet. M\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4 ri\u00eang t\u01b0 ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng b\u00ean trong m\u1ea1ng gia \u0111\u00ecnh ho\u1eb7c v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n. B\u1ea1n s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecba ch\u1ec9 ri\u00eang t\u01b0 cho c\u00e1c thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9 nh\u01b0 m\u00e1y in ho\u1eb7c m\u00e1y t\u00ednh x\u00e1ch tay.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu hai thi\u1ebft b\u1ecb c\u00f3 c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu hai thi\u1ebft b\u1ecb chia s\u1ebb c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4 tr\u00ean m\u1ed9t m\u1ea1ng, b\u1ea1n s\u1ebd g\u1eb7p s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i. D\u1eef li\u1ec7u c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ebfn \u0111\u00fang thi\u1ebft b\u1ecb. B\u1ea1n kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch c\u1ea5p cho m\u1ed7i thi\u1ebft b\u1ecb m\u1ed9t \u0111\u1ecba ch\u1ec9 duy nh\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >NAT l\u00e0 g\u00ec trong m\u1ed1i li\u00ean h\u1ec7 v\u1edbi IPv4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">NAT l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a D\u1ecbch \u0111\u1ecba ch\u1ec9 m\u1ea1ng (Network Address Translation). B\u1ea1n s\u1eed d\u1ee5ng NAT \u0111\u1ec3 cho ph\u00e9p nhi\u1ec1u thi\u1ebft b\u1ecb chia s\u1ebb m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai. NAT gi\u00fap ti\u1ebft ki\u1ec7m \u0111\u1ecba ch\u1ec9 v\u00e0 th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt cho m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u201cC\u1ea1n ki\u1ec7t \u0111\u1ecba ch\u1ec9 IPv4\u201d ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea1n ki\u1ec7t \u0111\u1ecba ch\u1ec9 IPv4 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f2n \u0111\u1ee7 \u0111\u1ecba ch\u1ec9 duy nh\u1ea5t \u0111\u1ec3 c\u1ea5p cho m\u1ecdi thi\u1ebft b\u1ecb. Th\u1ebf gi\u1edbi hi\u1ec7n c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb h\u01a1n s\u1ed1 l\u01b0\u1ee3ng m\u00e0 IPv4 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3. B\u1ea1n nh\u1eadn th\u1ea5y v\u1ea5n \u0111\u1ec1 n\u00e0y khi ng\u00e0y c\u00e0ng nhi\u1ec1u ng\u01b0\u1eddi v\u00e0 thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i internet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0o \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 IPv4 c\u1ee7a m\u00ecnh?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p s\u1eb5n nh\u01b0 Command Prompt tr\u00ean Windows ho\u1eb7c C\u00e0i \u0111\u1eb7t H\u1ec7 th\u1ed1ng tr\u00ean Mac. Nhi\u1ec1u trang web c\u0169ng hi\u1ec3n th\u1ecb \u0111\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai c\u1ee7a b\u1ea1n. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap b\u1ea1n t\u00ecm \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u00ecnh m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ecba ch\u1ec9 IPv4 x\u00e1c \u0111\u1ecbnh duy nh\u1ea5t thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n tr\u00ean m\u1ea1ng, cho ph\u00e9p truy c\u1eadp internet v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>","protected":false},"author":1,"featured_media":4688,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[13,14,18,24,26],"class_list":["post-4690","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-100g-modules","tag-10g-sfp-transceivers","tag-40g-qsfp-transceivers","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/comments?post=4690"}],"version-history":[{"count":5,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4690\/revisions"}],"predecessor-version":[{"id":11008,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4690\/revisions\/11008"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media\/4688"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media?parent=4690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/categories?post=4690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/tags?post=4690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}