{"id":3088,"date":"2026-03-11T00:00:00","date_gmt":"2026-03-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/1000base-t-copper-sfp-explained\/"},"modified":"2026-06-22T04:01:49","modified_gmt":"2026-06-22T04:01:49","slug":"1000base-t-copper-sfp-explained","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/1000base-t-copper-sfp-explained","title":{"rendered":"SFP \u0111\u1ed3ng 1000BASE-T: Gi\u1ea3i th\u00edch v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a module SFP RJ45"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0.jpg\" alt=\"1000BASE-T Copper SFP\" class=\"wp-image-3077\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/267b76756ad94814aeb04f30a3ffa2d0-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476812.htm\"><strong>SFP \u0111\u1ed3ng 1000BASE-T<\/strong><\/a> l\u00e0 b\u1ed9 thu ph\u00e1t Ethernet Gigabit cho ph\u00e9p c\u1ed5ng SFP k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i ti\u00eau chu\u1ea9n th\u00f4ng qua giao di\u1ec7n RJ45. Thay v\u00ec s\u1eed d\u1ee5ng c\u00e1p quang, m\u00f4-\u0111un n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng nh\u01b0 switch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 t\u01b0\u1eddng l\u1eeda truy\u1ec1n d\u1eef li\u1ec7u <strong>Ethernet 1 Gbps tr\u00ean c\u00e1p \u0111\u1ed3ng Cat5e ho\u1eb7c Cat6 l\u00ean \u0111\u1ebfn 100 m\u00e9t<\/strong>, tu\u00e2n theo ti\u00eau chu\u1ea9n IEEE 802.3ab c\u1ee7a Vi\u1ec7n K\u1ef9 s\u01b0 \u0110i\u1ec7n v\u00e0 \u0110i\u1ec7n t\u1eed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c m\u00f4-\u0111un <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">SFP quang t\u01b0\u01a1ng th\u00edch<\/a>, m\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng ch\u1ee9a PHY Ethernet t\u00edch h\u1ee3p chuy\u1ec3n \u0111\u1ed5i giao di\u1ec7n n\u1ed1i ti\u1ebfp <strong>1000BASE-X c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 th\u00e0nh t\u00edn hi\u1ec7u Ethernet \u0111\u1ed3ng 1000BASE-T<\/strong>. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 n\u00e0y cho ph\u00e9p k\u1ef9 s\u01b0 t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p c\u1ea5u tr\u00fac hi\u1ec7n c\u00f3 trong khi v\u1eabn duy tr\u00ec t\u00ednh linh ho\u1ea1t c\u1ee7a c\u00e1c c\u1ed5ng SFP m\u00f4-\u0111un.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd thi\u1ebft k\u1ebf n\u00e0y, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476812.htm\">SFP RJ45<\/a> c\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i khi c\u00e1p quang kh\u00f4ng c\u1ea7n thi\u1ebft ho\u1eb7c kh\u00f4ng kh\u1ea3 d\u1ee5ng, v\u00ed d\u1ee5 nh\u01b0 k\u1ebft n\u1ed1i switch truy c\u1eadp, m\u1edf r\u1ed9ng c\u1ed5ng Ethernet ho\u1eb7c t\u00edch h\u1ee3p m\u1ea1ng \u0111\u1ed3ng k\u1ebf th\u1eeba v\u1edbi thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 c\u00e1p quang. Tuy nhi\u00ean, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476770.htm\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng<\/a> c\u00e1c m\u00f4-\u0111un n\u00e0y c\u0169ng c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang bi\u1ec7t\u2014bao g\u1ed3m m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n cao h\u01a1n, sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n v\u00e0 c\u00e1c c\u00e2n nh\u1eafc c\u1ee5 th\u1ec3 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch\u2014m\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng c\u1ea7n hi\u1ec3u r\u00f5 tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i th\u00edch c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng 1000BASE-T, th\u1eddi \u0111i\u1ec3m n\u00ean s\u1eed d\u1ee5ng ch\u00fang thay v\u00ec c\u00e1p quang v\u00e0 c\u00e1ch l\u1ef1a ch\u1ecdn c\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch cho m\u1ea1ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u. B\u1ea1n c\u0169ng s\u1ebd h\u1ecdc c\u00e1c t\u00ecnh hu\u1ed1ng kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u0169ng nh\u01b0 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t \u0111\u1ec3 tri\u1ec3n khai SFP RJ45 m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 SFP \u0111\u1ed3ng 1000BASE-T l\u00e0 g\u00ec? \u0110\u1ecbnh ngh\u0129a v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>SFP \u0111\u1ed3ng 1000BASE-T<\/strong> l\u00e0 b\u1ed9 thu ph\u00e1t Ethernet Gigabit cho ph\u00e9p c\u1ed5ng SFP k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi <strong>c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i th\u00f4ng qua giao di\u1ec7n RJ45<\/strong>. Kh\u00e1c v\u1edbi c\u00e1c m\u00f4-\u0111un SFP quang truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean c\u00e1p quang, m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476801.htm\">SFP \u0111\u1ed3ng<\/a> m\u00f4-\u0111un SFP \u0111\u1ed3ng cho ph\u00e9p thi\u1ebft b\u1ecb m\u1ea1ng\u2014nh\u01b0 switch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 t\u01b0\u1eddng l\u1eeda\u2014giao ti\u1ebfp tr\u00ean c\u00e1p \u0111\u1ed3ng Cat5e ho\u1eb7c Cat6 ti\u00eau chu\u1ea9n trong khi v\u1eabn duy tr\u00ec t\u00ednh linh ho\u1ea1t m\u00f4-\u0111un c\u1ee7a d\u1ea1ng h\u00ecnh SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00f4-\u0111un ho\u1ea1t \u0111\u1ed9ng theo ti\u00eau chu\u1ea9n <strong>IEEE 802.3ab<\/strong> 1000BASE-T Ethernet Gigabit, h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eef li\u1ec7u 1 Gbps tr\u00ean c\u00e1p \u0111\u1ed3ng l\u00ean \u0111\u1ebfn 100 m\u00e9t. D\u1ea1ng h\u00ecnh v\u1eadt l\u00fd v\u00e0 giao di\u1ec7n \u0111i\u1ec7n c\u1ee7a m\u00f4-\u0111un tu\u00e2n theo c\u00e1c th\u00f4ng s\u1ed1 do \u1ee6y ban D\u1ea1ng h\u00ecnh Nh\u00e2n t\u1ed1 Nh\u1ecf (Small Form Factor Committee) quy \u0111\u1ecbnh, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c c\u1ed5ng SFP ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb m\u1ea1ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c.jpg\" alt=\"What Is a 1000BASE-T Copper SFP\" class=\"wp-image-3078\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0aa644fdbf6b435dae8d3820aea0b49c-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Giao di\u1ec7n RJ45 v\u00e0 c\u00e1p Ethernet<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c \u0111i\u1ec3m d\u1ec5 nh\u1eadn th\u1ea5y nh\u1ea5t c\u1ee7a m\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng l\u00e0 c\u1ed5ng Ethernet RJ45, cho ph\u00e9p c\u1eafm c\u00e1c c\u00e1p m\u1ea1ng xo\u1eafn \u0111\u00f4i ti\u00eau chu\u1ea9n. Thi\u1ebft k\u1ebf n\u00e0y cho ph\u00e9p k\u1ef9 s\u01b0 t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet \u0111\u00e3 \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Cat5e<\/strong><\/p><\/li><li><p><strong>Cat6<\/strong><\/p><\/li><li><p><strong>Cat6a<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec l\u1eafp \u0111\u1eb7t c\u00e1c \u0111\u01b0\u1eddng c\u00e1p quang m\u1edbi, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 t\u00edch h\u1ee3p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p \u0111\u1ed3ng hi\u1ec7n c\u00f3 v\u00e0o c\u00e1c switch ch\u1ee7 y\u1ebfu trang b\u1ecb c\u1ed5ng uplink SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >PHY n\u1ed9i b\u1ed9 v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean trong m\u00f4-\u0111un l\u00e0 m\u1ed9t <strong>PHY Ethernet Gigabit (b\u1ed9 thu ph\u00e1t l\u1edbp v\u1eadt l\u00fd)<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 x\u1eed l\u00fd t\u00edn hi\u1ec7u ph\u1ee9c t\u1ea1p c\u1ea7n thi\u1ebft cho giao ti\u1ebfp Ethernet tr\u00ean c\u00e1p \u0111\u1ed3ng. PHY t\u00edch h\u1ee3p n\u00e0y <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-are-ethernet-mac-and-phy\/\">PHY<\/a> th\u1ef1c hi\u1ec7n nhi\u1ec1u ch\u1ee9c n\u0103ng quan tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ef1 \u0111\u1ed9ng<\/strong> t\u1ef1 \u0111\u1ed9ng b\u1eaft t\u1ed1c \u0111\u1ed9 v\u00e0 ch\u1ebf \u0111\u1ed9 duplex<\/p><\/li><li><p><strong>m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u<\/strong><\/p><\/li><li><p><strong>lo\u1ea1i b\u1ecf ti\u1ebfng v\u1ecdng (echo cancellation) v\u00e0 b\u00f9 nhi\u1ec5u xuy\u00ean k\u00eanh (crosstalk compensation)<\/strong><\/p><\/li><li><p><strong>ph\u00e1t hi\u1ec7n l\u1ed7i v\u00e0 qu\u1ea3n l\u00fd li\u00ean k\u1ebft<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do ph\u1ea7n c\u1ee9ng x\u1eed l\u00fd t\u00edch h\u1ee3p n\u00e0y, c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng th\u01b0\u1eddng ti\u00eau th\u1ee5 nhi\u1ec1u \u0111i\u1ec7n n\u0103ng h\u01a1n v\u00e0 sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n so v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">c\u00e1c module SFP quang<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n: t\u1eeb 1000BASE-X sang 1000BASE-T<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t ch\u1ee9c n\u0103ng then ch\u1ed1t c\u1ee7a m\u00f4-\u0111un l\u00e0 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n gi\u1eefa hai giao di\u1ec7n Ethernet kh\u00e1c nhau.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Khe c\u1eafm SFP c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7 giao ti\u1ebfp b\u1eb1ng giao di\u1ec7n n\u1ed1i ti\u1ebfp 1000BASE-X.<\/p><\/li><li><p>C\u00e1p \u0111\u1ed3ng y\u00eau c\u1ea7u giao di\u1ec7n Ethernet \u0111i\u1ec7n 1000BASE-T.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, m\u00f4-\u0111un SFP \u0111\u1ed3ng \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n thu nh\u1ecf, th\u1ef1c hi\u1ec7n vi\u1ec7c d\u1ecbch t\u00edn hi\u1ec7u gi\u1eefa hai chu\u1ea9n n\u00e0y \u1edf c\u1ea5p \u0111\u1ed9 n\u1ed9i b\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t \u0111\u01a1n gi\u1ea3n, lu\u1ed3ng t\u00edn hi\u1ec7u ho\u1ea1t \u0111\u1ed9ng nh\u01b0 sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Switch g\u1eedi lu\u1ed3ng d\u1eef li\u1ec7u n\u1ed1i ti\u1ebfp 1000BASE-X t\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-21645-sfp-cages-connectors.htm\">ng\u0103n ch\u1ee9a SFP<\/a>.<\/p><\/li><li><p>PHY n\u1ed9i b\u1ed9 c\u1ee7a m\u00f4-\u0111un SFP \u0111\u1ed3ng chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u n\u00e0y th\u00e0nh <strong>t\u00edn hi\u1ec7u Ethernet \u0111i\u1ec7n 1000BASE-T<\/strong>.<\/p><\/li><li><p>T\u00edn hi\u1ec7u \u0111\u00e3 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c truy\u1ec1n qua <strong>c\u1ed5ng RJ45 t\u1edbi c\u00e1p Ethernet \u0111\u1ed3ng<\/strong>.<\/p><\/li><li><p>C\u00e1c t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb c\u00e1p \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i ng\u01b0\u1ee3c l\u1ea1i th\u00e0nh 1000BASE-X \u0111\u1ec3 g\u1eedi t\u1edbi switch.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00ednh qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 n\u00e0y khi\u1ebfn nhi\u1ec1u k\u1ef9 s\u01b0 m\u1ea1ng m\u00f4 t\u1ea3 c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng l\u00e0 <strong>\u201c<\/strong>m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n b\u00ean trong d\u1ea1ng h\u00ecnh SFP.<strong>\u201d<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00fd do t\u1ed3n t\u1ea1i c\u1ee7a c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m cung c\u1ea5p t\u00ednh linh ho\u1ea1t tri\u1ec3n khai trong c\u00e1c m\u1ea1ng m\u00e0 k\u1ebft n\u1ed1i c\u00e1p quang kh\u00f4ng c\u1ea7n thi\u1ebft ho\u1eb7c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p \u0111\u1ed3ng hi\u1ec7n c\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng. Thay v\u00ec thay th\u1ebf switch ho\u1eb7c th\u00eam b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n b\u00ean ngo\u00e0i, qu\u1ea3n tr\u1ecb vi\u00ean ch\u1ec9 c\u1ea7n c\u1eafm m\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng v\u00e0o khe SFP c\u00f2n tr\u1ed1ng \u0111\u1ec3 k\u00edch ho\u1ea1t kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i Ethernet Gigabit tr\u00ean c\u00e1p RJ45 ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c m\u00f4-\u0111un SFP RJ45 ho\u1ea1t \u0111\u1ed9ng b\u00ean trong c\u1ed5ng SFP v\u00e0 l\u00fd do ki\u1ebfn tr\u00fac n\u1ed9i b\u1ed9 c\u1ee7a ch\u00fang kh\u00e1c bi\u1ec7t so v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">b\u1ed9 thu ph\u00e1t quang<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00f4-\u0111un SFP RJ45 b\u00ean trong c\u1ed5ng SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476800.htm\"><strong>1000BASE-T<\/strong><\/a><strong> SFP \u0111\u1ed3ng<\/strong> tr\u00f4ng b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u1ef1 b\u1ed9 thu ph\u00e1t quang, ki\u1ebfn tr\u00fac n\u1ed9i b\u1ed9 c\u1ee7a n\u00f3 l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3. Thay v\u00ec s\u1eed d\u1ee5ng laser v\u00e0 \u0111i-\u1ed1t quang \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u quang, m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476800.htm\">M\u00f4-\u0111un SFP RJ45<\/a> ch\u1ee9a m\u1ed9t b\u1ed9 vi m\u1ea1ch PHY Ethernet t\u00edch h\u1ee3p v\u00e0 logic x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 cho ph\u00e9p c\u1ed5ng SFP giao ti\u1ebfp v\u1edbi c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i xem x\u00e9t s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ba th\u00e0nh ph\u1ea7n ch\u00ednh: <strong>Giao di\u1ec7n ch\u1ee7 SFP (<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/serdes-interfaces-high-speed-data-transfer-and-signal-integrity\/\"><strong>SERDES<br><\/strong><\/a><strong>)<\/strong>, LINK-PP LPJ4014CNL Industrial RJ45 Magjack <strong>vi m\u1ea1ch PHY n\u1ed9i b\u1ed9<\/strong>, v\u00e0 <strong>h\u1ec7 th\u1ed1ng t\u00edn hi\u1ec7u Ethernet \u0111\u1ed3ng tr\u1ee5c<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4.jpg\" alt=\"How RJ45 SFP Modules Work Inside an SFP Port\" class=\"wp-image-3079\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/15ed92a6385248a9b92bb77aac44fdb4-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Giao di\u1ec7n ch\u1ee7 SFP v\u00e0 giao ti\u1ebfp SERDES<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean trong m\u1ed9t thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, ng\u0103n c\u1eafm SFP giao ti\u1ebfp v\u1edbi thi\u1ebft b\u1ecb ch\u1ee7 th\u00f4ng qua m\u1ed9t giao di\u1ec7n n\u1ed1i ti\u1ebfp t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 SERDES (B\u1ed9 n\u1ed1i ti\u1ebfp\/B\u1ed9 gi\u1ea3i n\u1ed1i ti\u1ebfp). Giao di\u1ec7n n\u00e0y th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng giao th\u1ee9c <strong>1000BASE-X<\/strong>, truy\u1ec1n d\u1eef li\u1ec7u Ethernet t\u1ed1c \u0111\u1ed9 Gigabit d\u01b0\u1edbi d\u1ea1ng lu\u1ed3ng bit n\u1ed1i ti\u1ebfp.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t m\u00f4-\u0111un quang h\u1ecdc, d\u1eef li\u1ec7u n\u1ed1i ti\u1ebfp n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp th\u00e0nh t\u00edn hi\u1ec7u quang. Tuy nhi\u00ean, trong m\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c, t\u00edn hi\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i tr\u01b0\u1edbc ti\u00ean sang \u0111\u1ecbnh d\u1ea1ng \u0111i\u1ec7n d\u00f9ng cho Ethernet tr\u00ean c\u00e1p xo\u1eafn \u0111\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, giao di\u1ec7n SERDES cung c\u1ea5p lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra gi\u1eefa ASIC chuy\u1ec3n m\u1ea1ch v\u00e0 m\u00f4-\u0111un SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Vi m\u1ea1ch PHY n\u1ed9i b\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00f5i c\u1ee7a m\u1ed9t m\u00f4-\u0111un SFP RJ45 l\u00e0 m\u1ed9t vi m\u1ea1ch PHY Ethernet t\u1ed1c \u0111\u1ed9 Gigabit. Vi m\u1ea1ch n\u00e0y th\u1ef1c hi\u1ec7n c\u00e1c x\u1eed l\u00fd t\u00edn hi\u1ec7u ph\u1ee9c t\u1ea1p c\u1ea7n thi\u1ebft cho giao ti\u1ebfp Ethernet \u0111\u1ed3ng tr\u1ee5c, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 khung Ethernet<\/strong><\/p><\/li><li><p><strong>Kh\u00f4i ph\u1ee5c \u0111\u1ed3ng h\u1ed3 v\u00e0 c\u00e2n b\u1eb1ng t\u00edn hi\u1ec7u<\/strong><\/p><\/li><li><p><strong>H\u1ee7y ti\u1ebfng v\u1ecdng v\u00e0 gi\u1ea3m nhi\u1ec5u xuy\u00ean \u00e2m<\/strong><\/p><\/li><li><p><strong>Ph\u00e1t hi\u1ec7n li\u00ean k\u1ebft v\u00e0 s\u1eeda l\u1ed7i<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec t\u00edn hi\u1ec7u Ethernet \u0111\u1ed3ng tr\u1ee5c ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi t\u00edn hi\u1ec7u quang h\u1ecdc, n\u00ean vi m\u1ea1ch PHY y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u00e1ng k\u1ec3. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do khi\u1ebfn c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c th\u01b0\u1eddng ti\u00eau th\u1ee5 nhi\u1ec1u \u0111i\u1ec7n n\u0103ng h\u01a1n v\u00e0 sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n so v\u1edbi c\u00e1c m\u00f4-\u0111un SFP quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng v\u00e0 c\u1ea5u h\u00ecnh li\u00ean k\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu kh\u00e1c do vi m\u1ea1ch PHY th\u1ef1c hi\u1ec7n l\u00e0 <strong>t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/strong>, cho ph\u00e9p m\u00f4-\u0111un x\u00e1c \u0111\u1ecbnh c\u1ea5u h\u00ecnh li\u00ean k\u1ebft t\u1ed1i \u01b0u v\u1edbi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh kh\u1edfi t\u1ea1o li\u00ean k\u1ebft, vi m\u1ea1ch PHY trao \u0111\u1ed5i th\u00f4ng tin v\u1ec1 kh\u1ea3 n\u0103ng v\u1edbi thi\u1ebft b\u1ecb Ethernet \u1edf xa \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c t\u1ed1c \u0111\u1ed9 h\u1ed7 tr\u1ee3 (10 \/ 100 \/ 1000 Mbps t\u00f9y theo thi\u1ebft k\u1ebf m\u00f4-\u0111un)<\/p><\/li><li><p>Ch\u1ebf \u0111\u1ed9 duplex<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi qu\u00e1 tr\u00ecnh th\u01b0\u01a1ng l\u01b0\u1ee3ng ho\u00e0n t\u1ea5t, vi m\u1ea1ch PHY c\u1ea5u h\u00ecnh c\u00e1c tham s\u1ed1 t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t li\u00ean k\u1ebft Ethernet t\u1ed1c \u0111\u1ed9 Gigabit \u1ed5n \u0111\u1ecbnh tr\u00ean <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-twisted-pair-copper-cable-and-how-does-it-work\/\">c\u00e1p \u0111\u1ed3ng tr\u1ee5c<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u: T\u1eeb 1000BASE-X sang 1000BASE-T<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9c n\u0103ng k\u1ef9 thu\u1eadt quan tr\u1ecdng nh\u1ea5t c\u1ee7a m\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c l\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u gi\u1eefa hai chu\u1ea9n Ethernet kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean trong m\u00f4-\u0111un, vi m\u1ea1ch PHY d\u1ecbch chuy\u1ec3n t\u00edn hi\u1ec7u gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>1000BASE-X<br><\/strong> (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u00ean trong giao di\u1ec7n ch\u1ee7 SFP)<\/p><\/li><li><p><strong>1000BASE-T<\/strong> (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-application-specific-integrated-circuit-asic\/\">ASIC<\/a> g\u1eedi lu\u1ed3ng d\u1eef li\u1ec7u n\u1ed1i ti\u1ebfp 1000BASE-X qua giao di\u1ec7n SFP.<\/p><\/li><li><p>Vi m\u1ea1ch PHY n\u1ed9i b\u1ed9 c\u1ee7a m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u n\u1ed1i ti\u1ebfp th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n 1000BASE-T.<\/p><\/li><li><p>T\u00edn hi\u1ec7u \u0111\u00e3 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c truy\u1ec1n qua \u0111\u1ea7u n\u1ed1i RJ45 t\u1edbi c\u00e1p Ethernet.<\/p><\/li><li><p>C\u00e1c t\u00edn hi\u1ec7u \u0111\u1ebfn t\u1eeb c\u00e1p \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i ng\u01b0\u1ee3c l\u1ea1i th\u00e0nh 1000BASE-X tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c g\u1eedi t\u1edbi thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y cho ph\u00e9p m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho c\u00e1c m\u00f4-\u0111un SFP s\u1ee3i quang giao ti\u1ebfp li\u1ec1n m\u1ea1ch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet \u0111\u1ed3ng tr\u1ee5c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ea1i sao k\u1ef9 s\u01b0 m\u1ea1ng g\u1ecdi m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c l\u00e0 \u201cb\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n thu nh\u1ecf\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec m\u00f4-\u0111un th\u1ef1c hi\u1ec7n c\u1ea3 vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i giao th\u1ee9c l\u1eabn chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n v\u1eadt l\u00fd, nhi\u1ec1u k\u1ef9 s\u01b0 m\u1ea1ng m\u00f4 t\u1ea3 m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c nh\u01b0 m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n thu nh\u1ecf \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p b\u00ean trong d\u1ea1ng h\u00ecnh SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng s\u1ee3i quang \u2192 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n b\u00ean ngo\u00e0i \u2192 Ethernet RJ45<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c th\u1ef1c hi\u1ec7n c\u00f9ng qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i b\u00ean trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng SFP \u2192 chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 b\u1edfi vi m\u1ea1ch PHY \u2192 Ethernet RJ45<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf n\u00e0y cung c\u1ea5p m\u1ed9t c\u00e1ch t\u00edch h\u1ee3p g\u1ecdn nh\u1eb9 v\u00e0 linh ho\u1ea1t \u0111\u1ec3 k\u1ebft n\u1ed1i c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet \u0111\u1ed3ng tr\u1ee5c hi\u1ec7n c\u00f3 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">v\u1edbi c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng c\u1ed5ng uplink SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd so s\u00e1nh c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c v\u00e0 SFP s\u1ee3i quang v\u1ec1 hi\u1ec7u n\u0103ng, m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n tri\u1ec3n khai \u0111i\u1ec3n h\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 So s\u00e1nh SFP \u0111\u1ed3ng tr\u1ee5c v\u00e0 SFP s\u1ee3i quang: Hi\u1ec7u n\u0103ng, \u0111i\u1ec7n n\u0103ng v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both <strong>M\u00f4-\u0111un SFP \u0111\u1ed3ng<\/strong> and <strong>c\u00e1c module SFP quang<\/strong> cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i Ethernet t\u1ed1c \u0111\u1ed9 Gigabit th\u00f4ng qua c\u00f9ng d\u1ea1ng h\u00ecnh SFP, nh\u01b0ng ch\u00fang d\u1ef1a tr\u00ean c\u00e1c c\u00f4ng ngh\u1ec7 truy\u1ec1n d\u1eabn r\u1ea5t kh\u00e1c nhau. C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng tr\u1ee5c s\u1eed d\u1ee5ng c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i Cat5e\/Cat6 v\u1edbi \u0111\u1ea7u n\u1ed1i RJ45, trong khi c\u00e1c m\u00f4-\u0111un SFP s\u1ee3i quang truy\u1ec1n d\u1eef li\u1ec7u qua s\u1ee3i quang b\u1eb1ng t\u00edn hi\u1ec7u quang h\u1ecdc d\u1ef1a tr\u00ean laser.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i b\u1ed9 thu ph\u00e1t n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng khi thi\u1ebft k\u1ebf ho\u1eb7c n\u00e2ng c\u1ea5p m\u1ea1ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf.jpg\" alt=\"Copper SFP vs. Fiber SFP Performance, Power, and Use Cases\" class=\"wp-image-3080\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/996483516986464ea0b1b67b30f41ddf-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt ch\u00ednh<\/h3>\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>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476778.htm\">SFP \u0111\u1ed3ng<\/a><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476862.htm\">Module SFP quang<\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>M\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p \u0111\u1ed3ng tr\u1ee5c Cat5e \/ Cat6<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang \u0111a mode (MMF) ho\u1eb7c s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 100 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 80 km t\u00f9y thu\u1ed9c v\u00e0o m\u00f4-\u0111un quang h\u1ecdc<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (do t\u00edch h\u1ee3p vi m\u1ea1ch PHY)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 Tr\u1ec5<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u01a1i cao h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1ch th\u1ee9c truy\u1ec1n t\u00edn hi\u1ec7u Ethernet. Ethernet \u0111\u1ed3ng tr\u1ee5c y\u00eau c\u1ea7u x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 ph\u1ee9c t\u1ea1p nh\u1eb1m b\u00f9 tr\u1eeb nhi\u1ec5u, nhi\u1ec5u xuy\u00ean \u00e2m v\u00e0 suy hao t\u00edn hi\u1ec7u tr\u00ean c\u00e1p xo\u1eafn \u0111\u00f4i. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c b\u1ed9 thu ph\u00e1t quang chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng v\u00e0 truy\u1ec1n ch\u00fang qua s\u1ee3i quang v\u1edbi m\u1ee9c can nhi\u1ec5u th\u1ea5p h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 c\u00e2n nh\u1eafc v\u1ec1 hi\u1ec7u n\u0103ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t hi\u1ec7u n\u0103ng thu\u1ea7n t\u00fay, <strong>c\u00e1c m\u00f4-\u0111un SFP s\u1ee3i quang th\u01b0\u1eddng mang l\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t h\u01a1n<\/strong>. Truy\u1ec1n d\u1eabn quang h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch xa h\u01a1n nhi\u1ec1u v\u00e0 th\u01b0\u1eddng g\u00e2y ra \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n v\u00ec y\u00eau c\u1ea7u \u00edt b\u01b0\u1edbc x\u1eed l\u00fd t\u00edn hi\u1ec7u h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng ti\u00eau th\u1ee5 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n v\u00ec ch\u00fang ch\u1ee9a PHY Ethernet t\u00edch h\u1ee3p ch\u1ecbu tr\u00e1ch nhi\u1ec7m m\u00e3 h\u00f3a t\u00edn hi\u1ec7u, s\u1eeda l\u1ed7i v\u00e0 lo\u1ea1i b\u1ecf ti\u1ebfng vang. Do \u0111\u00f3, c\u00e1c m\u00f4-\u0111un n\u00e0y th\u01b0\u1eddng sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n so v\u1edbi c\u00e1c m\u00f4-\u0111un SFP quang ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c k\u1ecbch b\u1ea3n tri\u1ec3n khai \u0111i\u1ec3n h\u00ecnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 c\u00f3 nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476802.htm\">B\u1ed9 thu ph\u00e1t SFP \u0111\u1ed3ng<\/a> v\u1eabn h\u1eefu \u00edch trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng m\u1ea1ng:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SFP \u0111\u1ed3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u00e3 l\u1eafp \u0111\u1eb7t s\u1eb5n <strong>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet \u0111\u1ed3ng<\/strong> ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng<\/p><\/li><li><p>Ch\u1ec9 <strong>c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn (\u2264100 m)<\/strong> l\u00e0 y\u00eau c\u1ea7u<\/p><\/li><li><p>M\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch cung c\u1ea5p <strong>c\u1ed5ng SFP nh\u01b0ng kh\u00f4ng c\u00f3 c\u1ed5ng RJ45 n\u00e0o kh\u1ea3 d\u1ee5ng<\/strong><\/p><\/li><li><p>C\u1ea7n thi\u1ebft l\u1eadp m\u1ea1ng t\u1ea1m th\u1eddi ho\u1eb7c trong ph\u00f2ng th\u00ed nghi\u1ec7m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SFP quang \u0111\u01b0\u1ee3c \u01b0u ti\u00ean khi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c li\u00ean k\u1ebft m\u1ea1ng ph\u1ea3i bao ph\u1ee7 kho\u1ea3ng c\u00e1ch d\u00e0i<\/p><\/li><li><p><strong>M\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n<\/strong> l\u00e0 y\u00eau c\u1ea7u<\/p><\/li><li><p>M\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u <strong>kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb<\/strong><\/p><\/li><li><p>Li\u00ean quan \u0111\u1ebfn k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c m\u1ea1ng l\u00f5i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eadn \u0111\u1ecbnh t\u1eeb c\u1ed9ng \u0111\u1ed3ng k\u1ef9 s\u01b0 m\u1ea1ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn gi\u1eefa c\u00e1c k\u1ef9 s\u01b0 trong c\u00e1c c\u1ed9ng \u0111\u1ed3ng m\u1ea1ng, c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 l\u00e0 c\u00f4ng c\u1ee5 ti\u1ec7n l\u1ee3i nh\u01b0ng ch\u1ec9 ph\u00f9 h\u1ee3p trong t\u1eebng t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u1ef1a ch\u1ecdn ch\u00ednh cho c\u00e1c m\u1ea1ng hi\u1ec7u n\u0103ng cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u k\u1ef9 s\u01b0 l\u01b0u \u00fd r\u1eb1ng c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 khe c\u1eafm SFP ch\u01b0a s\u1eed d\u1ee5ng nh\u01b0ng kh\u00f4ng c\u00f2n c\u1ed5ng RJ45 n\u00e0o kh\u1ea3 d\u1ee5ng. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, vi\u1ec7c l\u1eafp \u0111\u1eb7t m\u00f4-\u0111un SFP \u0111\u1ed3ng hi\u1ec7u qu\u1ea3 m\u1edf r\u1ed9ng th\u00eam m\u1ed9t c\u1ed5ng Ethernet m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n c\u1ee9ng b\u1ed5 sung.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, c\u00e1c k\u1ef9 s\u01b0 c\u0169ng ch\u1ec9 ra m\u1ed9t s\u1ed1 \u0111i\u1ec3m \u0111\u00e1nh \u0111\u1ed5i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng cao h\u01a1n so v\u1edbi c\u00e1c m\u00f4-\u0111un SFP quang<\/p><\/li><li><p>Sinh nhi\u1ec7t th\u00eam trong m\u00f4i tr\u01b0\u1eddng b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao<\/p><\/li><li><p>\u0110\u1ed9 tr\u1ec5 h\u01a1i cao h\u01a1n do qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u n\u1ed9i b\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec nh\u1eefng l\u00fd do n\u00e0y, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476862.htm\">m\u00f4-\u0111un SFP quang<\/a> n\u00f3i chung \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho m\u1ea1ng l\u00f5i v\u00e0 chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao, trong khi c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho k\u1ebft n\u1ed1i \u1edf l\u1edbp truy c\u1eadp ho\u1eb7c t\u00edch h\u1ee3p kho\u1ea3ng c\u00e1ch ng\u1eafn v\u1edbi h\u1ec7 th\u1ed1ng c\u00e1p Ethernet hi\u1ec7n c\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng 1000BASE-T v\u00e0 th\u1eddi \u0111i\u1ec3m ch\u00fang mang l\u1ea1i l\u1ee3i th\u1ebf th\u1ef1c ti\u1ec5n l\u1edbn nh\u1ea5t trong c\u00e1c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn cho m\u00f4-\u0111un SFP \u0111\u1ed3ng 1000BASE-T<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c m\u00f4-\u0111un SFP quang chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c m\u1ea1ng kho\u1ea3ng c\u00e1ch xa v\u00e0 hi\u1ec7u n\u0103ng cao, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476801.htm\"><strong>m\u00f4-\u0111un SFP \u0111\u1ed3ng 1G<\/strong><\/a><strong> v\u1eabn c\u1ef1c k\u1ef3 h\u1eefu \u00edch trong v\u1eadn h\u00e0nh m\u1ea1ng th\u1ef1c t\u1ebf,<\/strong>, \u0111\u1eb7c bi\u1ec7t khi t\u00edch h\u1ee3p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet hi\u1ec7n c\u00f3 v\u1edbi c\u00e1c thi\u1ebft b\u1ecb d\u1ef1a tr\u00ean SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec c\u00e1c m\u00f4-\u0111un n\u00e0y cung c\u1ea5p giao di\u1ec7n RJ45 b\u00ean trong d\u1ea1ng h\u1ec7 s\u1ed1 SFP, ch\u00fang cho ph\u00e9p k\u1ef9 s\u01b0 m\u1edf r\u1ed9ng kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i ph\u1ea7n c\u1ee9ng b\u1ed9 chuy\u1ec3n m\u1ea1ch n\u1ec1n t\u1ea3ng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd.jpg\" alt=\"Common Use Cases for 1000BASE-T Copper SFP Modules\" class=\"wp-image-3081\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b8cf3c4c8e34ae1b6d0403153b7b1fd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 k\u1ecbch b\u1ea3n tri\u1ec3n khai th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Chuy\u1ec3n \u0111\u1ed5i c\u1ed5ng SFP th\u00e0nh c\u1ed5ng l\u00ean RJ45<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p v\u00e0 khu\u00f4n vi\u00ean c\u00f3 c\u1ed5ng l\u00ean SFP \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u1ee7 y\u1ebfu cho k\u1ebft n\u1ed1i quang. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u1eabn ph\u1ee5 thu\u1ed9c n\u1eb7ng v\u00e0o c\u00e1p Ethernet \u0111\u1ed3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476793.htm\">M\u00f4-\u0111un SFP 1000BASE-T<\/a> m\u00f4-\u0111un cho ph\u00e9p c\u1ed5ng SFP ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ed5ng Ethernet RJ45 ti\u00eau chu\u1ea9n, cho ph\u00e9p k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ed3ng nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 chuy\u1ec3n m\u1ea1ch truy c\u1eadp<\/p><\/li><li><p>Thi\u1ebft b\u1ecb t\u01b0\u1eddng l\u1eeda<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/a><\/p><\/li><li><p>H\u1ec7 th\u1ed1ng c\u00e1p t\u00f2a nh\u00e0 c\u00f3 c\u1ea5u tr\u00fac<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c m\u1ea1ng doanh nghi\u1ec7p \u0111ang d\u1ea7n chuy\u1ec3n \u0111\u1ed5i t\u1eeb \u0111\u1ed3ng sang quang, n\u01a1i c\u1ea3 hai lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n ph\u1ea3i c\u00f9ng t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Th\u00eam c\u1ed5ng RJ45 b\u1ed5 sung v\u00e0o b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 m\u1edf r\u1ed9ng s\u1ed1 l\u01b0\u1ee3ng c\u1ed5ng Ethernet \u0111\u1ed3ng kh\u1ea3 d\u1ee5ng tr\u00ean b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>24 ho\u1eb7c 48 c\u1ed5ng RJ45<\/p><\/li><li><p>C\u1ed9ng th\u00eam <strong>2\u20134 khe c\u1eafm c\u1ed5ng l\u00ean SFP<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu t\u1ea5t c\u1ea3 c\u1ed5ng RJ45 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, vi\u1ec7c l\u1eafp \u0111\u1eb7t m\u00f4-\u0111un SFP \u0111\u1ed3ng s\u1ebd ngay l\u1eadp t\u1ee9c chuy\u1ec3n \u0111\u1ed5i khe c\u1eafm SFP th\u00e0nh m\u1ed9t giao di\u1ec7n RJ45 Gigabit b\u1ed5 sung.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y th\u01b0\u1eddng l\u00e0 c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u1ec3 th\u00eam m\u1ed9t ho\u1eb7c hai c\u1ed5ng Ethernet b\u1ed5 sung m\u00e0 kh\u00f4ng c\u1ea7n l\u1eafp \u0111\u1eb7t b\u1ed9 chuy\u1ec3n m\u1ea1ch kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 M\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m m\u1ea1ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m th\u1eed m\u1ea1ng v\u00e0 m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c t\u00ecnh hu\u1ed1ng ph\u00f2ng th\u00ed nghi\u1ec7m, k\u1ef9 s\u01b0 th\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i <strong>b\u1ed9 chuy\u1ec3n m\u1ea1ch, m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m th\u1eed<\/strong> b\u1eb1ng c\u00e1c giao di\u1ec7n h\u1ed7n h\u1ee3p<\/p><\/li><li><p>C\u1ea5u h\u00ecnh l\u1ea1i k\u1ebft n\u1ed1i nhanh ch\u00f3ng trong qu\u00e1 tr\u00ecnh kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/p><\/li><li><p>L\u00e0m vi\u1ec7c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 SFP nh\u01b0ng kh\u00f4ng c\u00f3 c\u1ed5ng RJ45 chuy\u00ean d\u1ee5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng SFP \u0111\u1ed3ng gi\u00fap tr\u00e1nh nhu c\u1ea7u v\u1ec1 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u01b0\u01a1ng ti\u1ec7n b\u1ed5 sung v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a b\u1ed1 tr\u00ed ki\u1ec3m th\u1eed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 N\u00e2ng c\u1ea5p m\u1ea1ng doanh nghi\u1ec7p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh n\u00e2ng c\u1ea5p m\u1ea1ng doanh nghi\u1ec7p, nhi\u1ec1u t\u1ed5 ch\u1ee9c d\u1ea7n chuy\u1ec3n \u0111\u1ed5i t\u1eeb \u0111\u1ed3ng sang quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, thi\u1ebft b\u1ecb c\u0169 c\u00f3 th\u1ec3 v\u1eabn y\u00eau c\u1ea7u k\u1ebft n\u1ed1i RJ45. C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng l\u00e0m cho \u0111i\u1ec1u n\u00e0y kh\u1ea3 thi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i <strong>k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb Ethernet c\u0169 v\u1edbi c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch hi\u1ec7n \u0111\u1ea1i d\u1ef1a tr\u00ean SFP<\/strong><\/p><\/li><li><p>K\u00e9o d\u00e0i v\u00f2ng \u0111\u1eddi m\u1ea1ng trong c\u00e1c giai \u0111o\u1ea1n di chuy\u1ec3n<\/p><\/li><li><p>Duy tr\u00ec t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi <strong>c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Cat5e\/Cat6 hi\u1ec7n c\u00f3<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u00fap c\u00e1c t\u1ed5 ch\u1ee9c tr\u00e1nh ph\u1ea3i thay th\u1ebf l\u01b0\u1ee3ng l\u1edbn c\u00e1p trong c\u00e1c d\u1ef1 \u00e1n hi\u1ec7n \u0111\u1ea1i h\u00f3a m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf t\u1eeb k\u1ef9 s\u01b0 m\u1ea1ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c c\u1ed9ng \u0111\u1ed3ng m\u1ea1ng v\u00e0 cu\u1ed9c th\u1ea3o lu\u1eadn k\u1ef9 s\u01b0, m\u1ed9t t\u00ecnh hu\u1ed1ng th\u1ef1c ti\u1ec5n r\u1ea5t ph\u1ed5 bi\u1ebfn xu\u1ea5t hi\u1ec7n l\u1eb7p \u0111i l\u1eb7p l\u1ea1i:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201cT\u00f4i c\u00f3 m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u1edbi t\u1ea5t c\u1ea3 c\u1ed5ng RJ45 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, nh\u01b0ng c\u00f2n m\u1ed9t khe c\u1eafm SFP tr\u1ed1ng. M\u1ed9t m\u00f4-\u0111un SFP \u0111\u1ed3ng \u0111\u00e3 cung c\u1ea5p cho t\u00f4i c\u1ed5ng Ethernet b\u1ed5 sung m\u00e0 t\u00f4i c\u1ea7n.\u201d<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ecnh hu\u1ed1ng n\u00e0y l\u00e0m n\u1ed5i b\u1eadt l\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476776.htm\">m\u00f4-\u0111un SFP RJ45 1G<\/a> : t\u00ednh linh ho\u1ea1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec mua th\u00eam ph\u1ea7n c\u1ee9ng chuy\u1ec3n m\u1ea1ch, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng khe SFP hi\u1ec7n c\u00f3 \u0111\u1ec3 nhanh ch\u00f3ng b\u1ed5 sung k\u1ebft n\u1ed1i \u0111\u1ed3ng, t\u1eeb \u0111\u00f3 ti\u1ebft ki\u1ec7m c\u1ea3 chi ph\u00ed l\u1eabn th\u1eddi gian tri\u1ec3n khai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 C\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn v\u1edbi module SFP \u0111\u1ed3ng (v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 <strong>Module SFP \u0111\u1ed3ng 1000BASE-T<\/strong> r\u1ea5t ti\u1ec7n l\u1ee3i khi c\u1ea7n b\u1ed5 sung kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i RJ45 v\u00e0o c\u1ed5ng SFP, nh\u01b0ng ch\u00fang ho\u1ea1t \u0111\u1ed9ng kh\u00e1c bi\u1ec7t so v\u1edbi b\u1ed9 thu ph\u00e1t quang. V\u00ec ch\u1ee9a PHY Ethernet t\u00edch h\u1ee3p v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1, ch\u00fang \u0111\u00f4i khi g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn <strong>c\u00f4ng su\u1ea5t, t\u01b0\u01a1ng th\u00edch ho\u1eb7c th\u01b0\u01a1ng l\u01b0\u1ee3ng li\u00ean k\u1ebft<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d.jpg\" alt=\"Common Problems With Copper SFP Modules (And How to Fix Them)\" class=\"wp-image-3082\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd773802aefe4f0091ebb0ef9b95333d-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng g\u1eb7p ph\u1ea3i\u2014c\u00f9ng c\u00e1ch kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Module b\u1ecb qu\u00e1 nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tri\u1ec7u ch\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module SFP \u0111\u1ed3ng tr\u1edf n\u00ean n\u00f3ng r\u00f5 r\u1ec7t<\/p><\/li><li><p>Nh\u1eadt k\u00fd switch hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o nhi\u1ec7t \u0111\u1ed9<\/p><\/li><li><p>Li\u00ean k\u1ebft m\u1ea5t \u1ed5n \u0111\u1ecbnh sau th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng k\u00e9o d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n x\u1ea3y ra<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Module SFP \u0111\u1ed3ng bao g\u1ed3m PHY Ethernet t\u00edch h\u1ee3p v\u00e0 m\u1ea1ch x\u1eed l\u00fd t\u00edn hi\u1ec7u. \u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang ti\u00eau th\u1ee5 nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n module SFP s\u1ee3i quang, th\u01b0\u1eddng kho\u1ea3ng <strong>1\u20132,5 W<\/strong>, c\u00f3 th\u1ec3 t\u1ea1o th\u00eam nhi\u1ec7t b\u00ean trong c\u00e1c switch m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch kh\u1eafc ph\u1ee5c<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 t\u1eebng b\u01b0\u1edbc:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c minh switch h\u1ed7 tr\u1ee3 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476775.htm\"><strong>M\u00f4-\u0111un SFP 1000BASE-T<\/strong><\/a>.<\/p><\/li><li><p>Ki\u1ec3m tra lu\u1ed3ng kh\u00ed v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t c\u1ee7a switch.<\/p><\/li><li><p>Tr\u00e1nh l\u1eafp \u0111\u1eb7t module SFP \u0111\u1ed3ng \u1edf c\u00e1c khe SFP ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao li\u1ec1n k\u1ec1 n\u1ebfu c\u00f3 th\u1ec3.<\/p><\/li><li><p>S\u1eed d\u1ee5ng <strong>c\u00e1p \u0111\u1ed3ng ng\u1eafn h\u01a1n<\/strong> khi c\u00f3 th\u1ec3.<\/p><\/li><li><p>C\u00e2n nh\u1eafc chuy\u1ec3n sang d\u00f9ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\"><strong>module quang s\u1ee3i<\/strong><\/a> cho c\u00e1c li\u00ean k\u1ebft c\u1ed1 \u0111\u1ecbnh.<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >Li\u00ean k\u1ebft l\u00ean nh\u01b0ng kh\u00f4ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tri\u1ec7u ch\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u00e8n LED c\u1ed5ng hi\u1ec3n th\u1ecb <strong>li\u00ean k\u1ebft \u0111\u00e3 l\u00ean<\/strong><\/p><\/li><li><p>Tuy nhi\u00ean, <strong>kh\u00f4ng c\u00f3 g\u00f3i tin n\u00e0o \u0111\u01b0\u1ee3c truy\u1ec1n ho\u1eb7c nh\u1eadn<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ea5u h\u00ecnh VLAN sai<\/p><\/li><li><p>Kh\u00f4ng kh\u1edbp ch\u1ebf \u0111\u1ed9 duplex<\/p><\/li><li><p>Thi\u1ebft l\u1eadp b\u1ea3o m\u1eadt c\u1ed5ng switch<\/p><\/li><li><p>C\u00e1p Ethernet l\u1ed7i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch kh\u1eafc ph\u1ee5c<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 t\u1eebng b\u01b0\u1edbc:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c minh c\u1ea5u h\u00ecnh VLAN tr\u00ean c\u1ea3 hai thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i.<\/p><\/li><li><p>Ki\u1ec3m tra th\u1ed1ng k\u00ea c\u1ed5ng b\u1eb1ng l\u1ec7nh switch (v\u00ed d\u1ee5):<\/p><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\">\n<code>show interface status<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\" >\n<li><p>X\u00e1c nh\u1eadn c\u1ea3 hai thi\u1ebft b\u1ecb \u0111\u1ec1u h\u1ed7 tr\u1ee3 <strong>Ethernet Gigabit<\/strong>.<\/p><\/li><li><p>Thay c\u00e1p Ethernet b\u1eb1ng c\u00e1p Cat5e ho\u1eb7c Cat6 \u0111\u00e3 ki\u1ec3m tra.<\/p><\/li><li><p>V\u00f4 hi\u1ec7u h\u00f3a r\u1ed3i k\u00edch ho\u1ea1t l\u1ea1i c\u1ed5ng \u0111\u1ec3 \u0111\u1eb7t l\u1ea1i qu\u00e1 tr\u00ecnh th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 cung c\u1ea5p switch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tri\u1ec7u ch\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Switch b\u00e1o l\u1ed7i <strong>\u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<br>\u201d<\/strong><\/p><\/li><li><p>Module SFP \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n nh\u01b0ng <strong>li\u00ean k\u1ebft kh\u00f4ng k\u00edch ho\u1ea1t<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n x\u1ea3y ra<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p switch tri\u1ec3n khai <strong>ki\u1ec3m tra ID nh\u00e0 s\u1ea3n xu\u1ea5t trong b\u1ed9 nh\u1edb EEPROM c\u1ee7a SFP<\/strong>. N\u1ebfu module kh\u00f4ng n\u1eb1m trong danh s\u00e1ch nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t, switch c\u00f3 th\u1ec3 ch\u1eb7n giao di\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch kh\u1eafc ph\u1ee5c<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c minh module h\u1ed7 tr\u1ee3 m\u00f4 h\u00ecnh switch \u0111\u00edch.<\/p><\/li><li><p>Ki\u1ec3m tra xem switch c\u00f3 cho ph\u00e9p <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>Thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/strong><\/a>.<\/p><\/li><li><p>C\u1eadp nh\u1eadt firmware switch n\u1ebfu xu\u1ea5t hi\u1ec7n v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch.<\/p><\/li><li><p>S\u1eed d\u1ee5ng <strong>module SFP m\u00e3 h\u00f3a theo nh\u00e0 s\u1ea3n xu\u1ea5t ho\u1eb7c l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c<\/strong>.<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u1ea5n \u0111\u1ec1 th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tri\u1ec7u ch\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li><li><p>Li\u00ean k\u1ebft b\u1ecb ng\u1eaft l\u1eb7p \u0111i l\u1eb7p l\u1ea1i<\/p><\/li><li><p>Thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u1edf t\u1ed1c \u0111\u1ed9 100 Mbps thay v\u00ec 1 Gbps<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n x\u1ea3y ra<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ethernet \u0111\u1ed3ng d\u1ef1a v\u00e0o <strong>t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e0i \u0111\u1eb7t t\u1ed1c \u0111\u1ed9 v\u00e0 duplex. Vi\u1ec7c c\u00e1p k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c c\u1ea5u h\u00ecnh c\u1ed5ng kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 ng\u0103n c\u1ea3n vi\u1ec7c th\u01b0\u01a1ng l\u01b0\u1ee3ng th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch kh\u1eafc ph\u1ee5c<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 t\u1eebng b\u01b0\u1edbc:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c minh c\u1ea3 hai c\u1ed5ng \u0111\u1ec1u h\u1ed7 tr\u1ee3 <strong>t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/strong>.<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o c\u00e1p Ethernet l\u00e0 <strong>c\u00e1p Ethernet Cat5e ho\u1eb7c cao h\u01a1n<\/strong>.<\/p><\/li><li><p>Ki\u1ec3m tra chi\u1ec1u d\u00e0i c\u00e1p (kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 100 m\u00e9t).<\/p><\/li><li><p>Thi\u1ebft l\u1eadp th\u1ee7 c\u00f4ng t\u1ed1c \u0111\u1ed9 n\u1ebfu c\u1ea7n:<\/p><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\">\n<code>interface gi1\/0\/1<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\" >\n<li><p>Ki\u1ec3m tra v\u1edbi m\u1ed9t c\u1ed5ng switch kh\u00e1c.<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >Danh s\u00e1ch ki\u1ec3m tra nhanh \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP \u0111\u1ed3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ch\u1ea9n \u0111o\u00e1n nhanh, k\u1ef9 s\u01b0 m\u1ea1ng th\u01b0\u1eddng tu\u00e2n theo danh s\u00e1ch ki\u1ec3m tra n\u00e0y:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>X\u00e1c nh\u1eadn <strong>t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a switch v\u1edbi module SFP \u0111\u1ed3ng<\/strong><\/p><\/li><li><p>S\u1eed d\u1ee5ng <strong>c\u00e1p Cat5e\/Cat6 d\u01b0\u1edbi 100 m<\/strong><\/p><\/li><li><p>Ki\u1ec3m tra <strong>c\u00e0i \u0111\u1eb7t t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/strong><\/p><\/li><li><p>Gi\u00e1m s\u00e1t <strong>nhi\u1ec7t \u0111\u1ed9 v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t<\/strong><\/p><\/li><li><p>X\u00e1c minh <strong>c\u1ea5u h\u00ecnh VLAN v\u00e0 c\u1ed5ng<\/strong><\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Tu\u00e2n theo c\u00e1c b\u01b0\u1edbc n\u00e0y s\u1ebd gi\u1ea3i quy\u1ebft h\u1ea7u h\u1ebft s\u1ef1 c\u1ed1 SFP \u0111\u1ed3ng trong v\u00e0i ph\u00fat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua v\u1ec1 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476775.htm\">M\u00f4-\u0111un SFP 1000BASE-T<\/a> module, bao g\u1ed3m t\u00ednh t\u01b0\u01a1ng th\u00edch, m\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00ean (ho\u1eb7c kh\u00f4ng n\u00ean) s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 C\u00e1ch ch\u1ecdn module SFP \u0111\u1ed3ng 1000BASE-T ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u01b0u ti\u00ean s\u1ef1 m\u1ea1nh m\u1ebd, qu\u1ea3n l\u00fd v\u00e0 \u0111\u1ed9 trong su\u1ed1t. <strong>Module SFP \u0111\u1ed3ng 1000BASE-T<\/strong> \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n vi\u1ec7c ch\u1ec9 gh\u00e9p n\u1ed1i \u0111\u1ea7u n\u1ed1i RJ45. V\u00ec module SFP \u0111\u1ed3ng ch\u1ee9a PHY Ethernet t\u00edch h\u1ee3p v\u00e0 ti\u00eau th\u1ee5 nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n module quang, k\u1ef9 s\u01b0 ph\u1ea3i x\u00e1c minh <strong>c\u00e1p, t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi switch v\u00e0 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/strong> tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc.jpg\" alt=\"How to Choose the Right 1000BASE-T Copper SFP Module\" class=\"wp-image-3083\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c4f47f750087488593ed10d49c5bc7cc-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u1ebfu t\u1ed1 sau gi\u00fap \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong m\u1ea1ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn ch\u00ednh<\/h3>\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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Y\u1ebfu t\u1ed1<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u00ea duy\u1ec7t<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i c\u00e1p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1eed d\u1ee5ng c\u00e1p Ethernet Cat5e ho\u1eb7c Cat6 \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 Gigabit \u1ed5n \u0111\u1ecbnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a \u2264100 m\u00e9t theo ti\u00eau chu\u1ea9n Ethernet<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><p>MEDIUM-HIGH<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch EEPROM c\u1ee7a module v\u1edbi switch \u0111\u00edch<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o c\u1ed5ng SFP h\u1ed7 tr\u1ee3 m\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao h\u01a1n c\u1ee7a module \u0111\u1ed3ng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 lo\u1ea1i c\u00e1p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476781.htm\">Fiber optic links are better for long-distance or EMI-sensitive environments<\/a> module d\u1ef1a v\u00e0o c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i ti\u00eau chu\u1ea9n. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u n\u0103ng <strong>Gigabit Ethernet \u1ed5n \u0111\u1ecbnh<\/strong>, c\u00e1p ph\u1ea3i \u0111\u00e1p \u1ee9ng \u00edt nh\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Cat5e<\/strong> (y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u cho Ethernet 1G)<\/p><\/li><li><p><strong>Cat6<\/strong> (khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p c\u1ea5p th\u1ea5p h\u01a1n ho\u1eb7c \u0111\u1ea7u n\u1ed1i b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i trong th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 ho\u1eb7c m\u1ea5t g\u00f3i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 Ki\u1ec3m tra kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft t\u1ed1i \u0111a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Theo \u0111\u1eb7c t\u1ea3 Ethernet 1000BASE-T do Vi\u1ec7n K\u1ef9 s\u01b0 \u0110i\u1ec7n v\u00e0 \u0110i\u1ec7n t\u1eed (IEEE) quy \u0111\u1ecbnh, li\u00ean k\u1ebft Ethernet \u0111\u1ed3ng h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u1ed1i \u0111a 100 m\u00e9t tr\u00ean c\u00e1p xo\u1eafn \u0111\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi li\u00ean k\u1ebft v\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng c\u00e1ch n\u00e0y, suy hao t\u00edn hi\u1ec7u v\u00e0 nhi\u1ec5u c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/li><li><p>Th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 gi\u1ea3m<\/p><\/li><li><p>M\u1ea5t g\u00f3i d\u1eef li\u1ec7u ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kho\u1ea3ng c\u00e1ch y\u00eau c\u1ea7u l\u1edbn h\u01a1n 100 m, module SFP s\u1ee3i quang th\u01b0\u1eddng l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 X\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi switch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 switch \u00e1p d\u1ee5ng ki\u1ec3m tra nghi\u00eam ng\u1eb7t <strong>t\u00ednh t\u01b0\u01a1ng th\u00edch nh\u00e0 s\u1ea3n xu\u1ea5t SFP<\/strong> th\u00f4ng qua d\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng EEPROM c\u1ee7a module.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi mua module SFP \u0111\u1ed3ng, h\u00e3y x\u00e1c minh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4 h\u00ecnh switch h\u1ed7 tr\u1ee3 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476784.htm\"><strong>b\u1ed9 thu ph\u00e1t 1000BASE-T<\/strong><\/a><\/p><\/li><li><p>Firmware module \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a d\u00e0nh ri\u00eang cho nh\u00e0 s\u1ea3n xu\u1ea5t switch \u0111\u00edch<\/p><\/li><li><p>H\u1ec7 \u0111i\u1ec1u h\u00e0nh m\u1ea1ng cho ph\u00e9p s\u1eed d\u1ee5ng c\u00e1c module quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7i nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cTransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>C\u1ed5ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li><li><p>Li\u00ean k\u1ebft kh\u00f4ng kh\u1edfi t\u1ea1o \u0111\u01b0\u1ee3c<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b6 \u0110\u00e1nh gi\u00e1 Ng\u00e2n s\u00e1ch C\u00f4ng su\u1ea5t C\u1ed5ng SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP \u0111\u1ed3ng y\u00eau c\u1ea7u <strong>nhi\u1ec1u c\u00f4ng su\u1ea5t \u0111i\u1ec7n h\u01a1n<\/strong> so v\u1edbi c\u00e1c module SFP quang do c\u00f3 chip PHY t\u00edch h\u1ee3p v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n x\u1eed l\u00fd t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec3n h\u00ecnh n\u1eb1m trong kho\u1ea3ng <strong>1 W \u0111\u1ebfn 2,5 W<\/strong>, cao \u0111\u00e1ng k\u1ec3 so v\u1edbi nhi\u1ec1u module SFP s\u1ee3i quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, k\u1ef9 s\u01b0 c\u1ea7n x\u00e1c minh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Khe c\u1eafm SFP tr\u00ean switch h\u1ed7 tr\u1ee3 <strong>c\u00e1c module c\u00f3 c\u00f4ng su\u1ea5t cao h\u01a1n<\/strong><\/p><\/li><li><p>L\u00e0m m\u00e1t v\u00e0 lu\u1ed3ng kh\u00ed <strong>\u0111\u1ea7y \u0111\u1ee7<\/strong> c\u00f3 s\u1eb5n<\/p><\/li><li><p>Vi\u1ec7c tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t c\u1ee7a switch<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Danh s\u00e1ch Ki\u1ec3m tra Tri\u1ec3n khai Nhanh Module SFP \u0110\u1ed3ng 1000BASE-T<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi tri\u1ec3n khai module SFP \u0111\u1ed3ng 1000BASE-T, h\u00e3y x\u00e1c nh\u1eadn c\u00e1c \u0111i\u1ec1u sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1p l\u00e0 <strong>Cat5e ho\u1eb7c Cat6<\/strong><\/p><\/li><li><p>Chi\u1ec1u d\u00e0i c\u00e1p l\u00e0 <strong>\u2264100 m<\/strong><\/p><\/li><li><p>M\u00f4-\u0111un l\u00e0 <strong>t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t switch<\/strong><\/p><\/li><li><p>Khe c\u1eafm SFP h\u1ed7 tr\u1ee3 <strong>m\u1ee9c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t cao h\u01a1n<\/strong><\/p><\/li><li><p>C\u1ea5u h\u00ecnh c\u1ed5ng m\u1ea1ng cho ph\u00e9p <strong>t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng th\u00f4ng qua giao di\u1ec7n SFP, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u1ea1ng truy c\u1eadp doanh nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng lai gi\u1eefa s\u1ee3i quang v\u00e0 \u0111\u1ed3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd xem x\u00e9t m\u1ed9t ch\u1ee7 \u0111\u1ec1 th\u1ef1c ti\u1ec5n quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng: kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c module SFP \u0111\u1ed3ng c\u1ee7a b\u00ean th\u1ee9 ba v\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t switch l\u1edbn, bao g\u1ed3m c\u1ea3 v\u1ea5n \u0111\u1ec1 kh\u00f3a nh\u00e0 cung c\u1ea5p (vendor lock-in) v\u00e0 c\u00e1ch x\u00e1c minh s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a module tr\u01b0\u1edbc khi tri\u1ec3n khai<strong>.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 Kh\u1ea3 n\u0103ng T\u01b0\u01a1ng th\u00edch Module SFP \u0110\u1ed3ng c\u1ee7a B\u00ean Th\u1ee9 Ba v\u00e0 Hi\u1ec7n t\u01b0\u1ee3ng Kh\u00f3a Nh\u00e0 Cung C\u1ea5p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi tri\u1ec3n khai c\u00e1c module SFP \u0111\u1ed3ng 1000BASE-T, k\u1ef9 s\u01b0 th\u01b0\u1eddng g\u1eb7p c\u00e1c c\u00e2u h\u1ecfi v\u1ec1 <strong>kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t switch kh\u00e1c nhau<\/strong> v\u00e0 nh\u1eefng h\u1ec7 l\u1ee5y ti\u1ec1m \u1ea9n \u0111\u1ed1i v\u1edbi ch\u1ebf \u0111\u1ed9 b\u1ea3o h\u00e0nh ho\u1eb7c h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7.jpg\" alt=\"Third-Party Copper SFP Compatibility and Vendor Lock-In\" class=\"wp-image-3084\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5384a040a449412580bd0ac2cb2840b7-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c Module SFP \u0110\u1ed3ng T\u01b0\u01a1ng th\u00edch Cisco<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u chuy\u00ean gia m\u1ea1ng d\u1ef1a v\u00e0o <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476813.htm\"><strong>c\u00e1c module SFP t\u01b0\u01a1ng th\u00edch Cisco<\/strong><\/a> cho c\u00e1c tri\u1ec3n khai doanh nghi\u1ec7p. C\u00e1c module n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi switch Cisco m\u00e0 kh\u00f4ng k\u00edch ho\u1ea1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cC\u1ea3nh b\u00e1o \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>L\u1ed7i th\u01b0\u01a1ng l\u01b0\u1ee3ng li\u00ean k\u1ebft<\/p><\/li><li><p>Firmware restrictions<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng module t\u01b0\u01a1ng th\u00edch Cisco \u0111\u1ea3m b\u1ea3o r\u1eb1ng <a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/eeprom-electrically-erasable-programmable-read-only-memory\/\">B\u1ed9 nh\u1edb EEPROM<\/a> th\u00f4ng tin nh\u1eadn d\u1ea1ng v\u00e0 m\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p kh\u1edbp v\u1edbi h\u1ed3 s\u01a1 k\u1ef3 v\u1ecdng c\u1ee7a switch, cho ph\u00e9p thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7 1 Gbps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Module Quang h\u1ecdc OEM so v\u1edbi Module T\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP \u0111\u1ed3ng thu\u1ed9c hai lo\u1ea1i:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Module OEM (Nh\u00e0 s\u1ea3n xu\u1ea5t Thi\u1ebft b\u1ecb G\u1ed1c)<\/strong><\/p><ul><li><p>Do nh\u00e0 s\u1ea3n xu\u1ea5t switch s\u1ea3n xu\u1ea5t<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 h\u1ed7 tr\u1ee3 b\u1ea3o h\u00e0nh<\/p><\/li><li><p>Gi\u00e1 cao h\u01a1n<\/p><\/li><\/ul><\/li><li><p><strong>Module T\u01b0\u01a1ng th\u00edch c\u1ee7a B\u00ean Th\u1ee9 Ba<\/strong><\/p><ul><li><p>Do c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ed9c l\u1eadp s\u1ea3n xu\u1ea5t<\/p><\/li><li><p>Th\u01b0\u1eddng r\u1ebb h\u01a1n \u0111\u00e1ng k\u1ec3<\/p><\/li><li><p>C\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7 n\u1ebfu m\u00e3 h\u00f3a EEPROM v\u00e0 firmware \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t switch<\/p><\/li><\/ul><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khuy\u1ebfn ngh\u1ecb:<br><\/strong> H\u00e3y x\u00e1c minh r\u1eb1ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476770.htm\">b\u00ean th\u1ee9 ba<\/a> nh\u00e0 s\u1ea3n xu\u1ea5t module n\u00eau r\u00f5 r\u00e0ng kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi model switch c\u1ee7a b\u1ea1n \u0111\u1ec3 tr\u00e1nh c\u00e1c s\u1ef1 c\u1ed1 li\u00ean k\u1ebft b\u1ea5t ng\u1edd ho\u1eb7c xung \u0111\u1ed9t b\u1ea3o h\u00e0nh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >EEPROM Coding<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i module SFP \u0111\u1ec1u ch\u1ee9a b\u1ed9 nh\u1edb EEPROM (B\u1ed9 nh\u1edb ch\u1ec9 \u0111\u1ecdc c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh v\u00e0 x\u00f3a \u0111i\u1ec7n) l\u01b0u tr\u1eef th\u00f4ng tin quan tr\u1ecdng, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ean v\u00e0 ID nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>T\u1ed1c \u0111\u1ed9 v\u00e0 ch\u1ebf \u0111\u1ed9 duplex \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>Lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn (\u0111\u1ed3ng\/s\u1ee3i quang)<\/p><\/li><li><p>M\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Switch \u0111\u1ecdc d\u1eef li\u1ec7u n\u00e0y khi module \u0111\u01b0\u1ee3c c\u1eafm v\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem module c\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p k\u00edch ho\u1ea1t hay kh\u00f4ng. N\u1ebfu d\u1eef li\u1ec7u EEPROM kh\u00f4ng kh\u1edbp v\u1edbi h\u1ed3 s\u01a1 nh\u00e0 cung c\u1ea5p k\u1ef3 v\u1ecdng, module c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c li\u00ean k\u1ebft<\/p><\/li><li><p>B\u1ecb switch ch\u1eb7n<\/p><\/li><li><p>G\u00e2y ra c\u1ea3nh b\u00e1o h\u1ec7 th\u1ed1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t SFP b\u00ean th\u1ee9 ba cung c\u1ea5p EEPROM \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a theo nh\u00e0 cung c\u1ea5p nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch li\u1ec1n m\u1ea1ch v\u1edbi Cisco, Juniper, MikroTik ho\u1eb7c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u1ea1n ch\u1ebf Firmware v\u00e0 Th\u1ef1c h\u00e0nh T\u1ed1t Nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 switch \u00e1p d\u1ee5ng c\u00e1c ki\u1ec3m tra \u1edf c\u1ea5p firmware nh\u1eb1m h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng module SFP kh\u00f4ng ph\u1ea3i OEM. \u0110\u1ec3 tr\u00e1nh s\u1ef1 c\u1ed1 v\u1eadn h\u00e0nh:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Ki\u1ec3m tra t\u00e0i li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/strong> v\u1ec1 c\u00e1c b\u1ed9 thu ph\u00e1t \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/p><\/li><li><p><strong>C\u1eadp nh\u1eadt firmware b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/strong> c\u1eadp nh\u1eadt l\u00ean phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t, v\u00ec m\u1ed9t s\u1ed1 b\u1ea3n ph\u00e1t h\u00e0nh firmware c\u1ea3i thi\u1ec7n h\u1ed7 tr\u1ee3 cho module quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba.<\/p><\/li><li><p><strong>Th\u1eed nghi\u1ec7m module trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m<\/strong> tr\u01b0\u1edbc khi tri\u1ec3n khai trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/p><\/li><li><p><strong>Duy tr\u00ec ma tr\u1eadn t\u01b0\u01a1ng th\u00edch<\/strong> cho t\u1ea5t c\u1ea3 switch v\u00e0 module SFP trong m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t n\u00e0y, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476812.htm\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a> module chi ph\u00ed hi\u1ec7u qu\u1ea3 trong khi v\u1eabn duy tr\u00ec \u0111\u1ed9 tin c\u1eady m\u1ea1ng v\u00e0 tu\u00e2n th\u1ee7 khuy\u1ebfn ngh\u1ecb c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ) ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u1ec1 module SFP \u0111\u1ed3ng 1000BASE-T, bao g\u1ed3m kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, gi\u1edbi h\u1ea1n hi\u1ec7u n\u0103ng v\u00e0 th\u1eddi \u0111i\u1ec3m k\u1ef9 s\u01b0 n\u00ean ch\u1ecdn SFP \u0111\u1ed3ng thay v\u00ec quang h\u1ecdc s\u1ee3i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 C\u00e1c C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p V\u1ec1 Module SFP \u0110\u1ed3ng 1000BASE-T<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443.jpg\" alt=\"FAQs About 1000BASE-T Copper SFP Modules\" class=\"wp-image-3085\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9e0bbfb2cef4196b1b05cd6d2411443-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C1: Module SFP \u0111\u1ed3ng l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u01101: Module SFP \u0111\u1ed3ng l\u00e0 m\u1ed9t <strong>module b\u1ed9 thu ph\u00e1t 1000BASE-T<\/strong> cho ph\u00e9p c\u1ed5ng SFP k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi <strong>c\u00e1p Ethernet xo\u1eafn \u0111\u00f4i<\/strong> th\u00f4ng qua \u0111\u1ea7u n\u1ed1i RJ45, cho ph\u00e9p Gigabit Ethernet tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u1ed3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C2: C\u1ed5ng SFP c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i RJ45 kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u01102: C\u00f3. <strong>C\u00e1c module SFP \u0111\u1ed3ng cung c\u1ea5p giao di\u1ec7n RJ45<\/strong>, chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u tu\u1ea7n t\u1ef1 1000BASE-X c\u1ee7a SFP sang 1000BASE-T \u0111\u1ec3 k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C3: V\u00ec sao c\u00e1c module SFP \u0111\u1ed3ng l\u1ea1i n\u00f3ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u01103: C\u00e1c module SFP \u0111\u1ed3ng bao g\u1ed3m m\u1ed9t <strong>chip PHY Ethernet t\u00edch h\u1ee3p<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m m\u00e3 h\u00f3a t\u00edn hi\u1ec7u, th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ef1 \u0111\u1ed9ng v\u00e0 s\u1eeda l\u1ed7i. Vi\u1ec7c x\u1eed l\u00fd b\u1ed5 sung n\u00e0y <strong>ti\u00eau th\u1ee5 nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n v\u00e0 sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n<\/strong> so v\u1edbi c\u00e1c module SFP quang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C4: C\u00e1c module SFP \u0111\u1ed3ng c\u00f3 \u0111\u1ed9 tin c\u1eady kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u01104: Khi s\u1eed d\u1ee5ng v\u1edbi <strong>c\u00e1c switch t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1p \u0111\u00fang ti\u00eau chu\u1ea9n<\/strong>, c\u00e1c module SFP \u0111\u1ed3ng r\u1ea5t \u0111\u00e1ng tin c\u1eady trong ph\u1ea1m vi kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a <strong>100 m\u00e9t<\/strong>. C\u00e1c s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 ph\u00e1t sinh t\u1eeb <strong>switch kh\u00f4ng t\u01b0\u01a1ng th\u00edch, c\u00e1p k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C5: C\u00f3 th\u1ec3 d\u00f9ng c\u00e1p Cat6 v\u1edbi SFP kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u01102: C\u00f3. <strong>C\u00e1p Cat6 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong> cho c\u00e1c k\u1ebft n\u1ed1i SFP \u0111\u1ed3ng nh\u1eb1m \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng Gigabit \u1ed5n \u0111\u1ecbnh. C\u00e1p Cat5e c\u0169ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 K\u1ebft lu\u1eadn: Khi n\u00e0o N\u00ean S\u1eed D\u1ee5ng Module SFP \u0110\u1ed3ng 1000BASE-T Trong C\u00e1c M\u1ea1ng Hi\u1ec7n \u0110\u1ea1i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Module SFP \u0111\u1ed3ng 1000BASE-T<\/strong> cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p linh ho\u1ea1t v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u1ec3 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng c\u00e1p Ethernet hi\u1ec7n c\u00f3 v\u00e0o c\u00e1c switch hi\u1ec7n \u0111\u1ea1i d\u1ef1a tr\u00ean c\u1ed5ng SFP. Ch\u00fang r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn 100 m\u00e9t, v\u00ed d\u1ee5 nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u00eam m\u1ed9t c\u1ed5ng RJ45 b\u1ed5 sung v\u00e0o switch<\/p><\/li><li><p>Chuy\u1ec3n \u0111\u1ed5i c\u1ed5ng uplink SFP sang k\u1ebft n\u1ed1i \u0111\u1ed3ng (copper) \u0111\u1ec3 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u0169<\/p><\/li><li><p>M\u1ea1ng ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 tri\u1ec3n khai t\u1ea1m th\u1eddi<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, c\u00e1c module SFP \u0111\u1ed3ng kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng l\u00f5i c\u00f3 m\u1eadt \u0111\u1ed9 cao ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao, n\u01a1i c\u00e1c module SFP quang h\u1ecdc mang l\u1ea1i <strong>\u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n v\u00e0 t\u1ea7m xa truy\u1ec1n d\u1eabn l\u1edbn h\u01a1n<\/strong>. Vi\u1ec7c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng cao h\u01a1n v\u00e0 sinh nhi\u1ec7t nhi\u1ec1u h\u01a1n khi\u1ebfn ch\u00fang \u00edt ph\u00f9 h\u1ee3p h\u01a1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng switch c\u00f3 m\u1eadt \u0111\u1ed9 l\u1eafp \u0111\u1eb7t d\u00e0y \u0111\u1eb7c.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567.jpg\" alt=\"When to Use 1000BASE-T Copper SFP in Modern Networks\" class=\"wp-image-3086\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9009278e13dc412c97d0540d5707f567-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tri\u1ec3n khai \u0111\u00e1ng tin c\u1eady, lu\u00f4n lu\u00f4n <strong>x\u00e1c minh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a switch v\u00e0 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t <\/strong>tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t. K\u1ef9 s\u01b0 v\u00e0 chuy\u00ean gia quy ho\u1ea1ch m\u1ea1ng c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> H\u1ed7 tr\u1ee3 1000BASE-DWDM v\u00e0 10GBASE-DWDM<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1c module SFP \u0111\u1ed3ng 1000BASE-T t\u01b0\u01a1ng th\u00edch<\/strong><\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/lp-sfp-msri.pdf\"><strong>B\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt (Datasheet)<\/strong><\/a><strong> t\u1ea3i xu\u1ed1ng<\/strong> \u0111\u1ec3 bi\u1ebft th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft<\/p><\/li><li><p><strong>H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<\/strong> \u0111\u1ec3 c\u1ea5u h\u00ecnh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch c\u00e1c module SFP \u0111\u1ed3ng \u0111\u1ea3m b\u1ea3o t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n c\u00f3 \u0111\u1ed3ng th\u1eddi duy tr\u00ec \u0111\u1ed9 tin c\u1eady v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a m\u1ea1ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u SFP \u0111\u1ed3ng 1000BASE-T l\u00e0 g\u00ec, c\u00e1ch module SFP RJ45 ho\u1ea1t \u0111\u1ed9ng, khi n\u00e0o n\u00ean d\u00f9ng SFP \u0111\u1ed3ng thay v\u00ec SFP s\u1ee3i quang, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c m\u1eb9o kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn.<\/p>","protected":false},"author":1,"featured_media":3087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[20],"class_list":["post-3088","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-rj45-copper-sfp"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=3088"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3088\/revisions"}],"predecessor-version":[{"id":10755,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3088\/revisions\/10755"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3087"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}