{"id":3043,"date":"2026-03-16T00:00:00","date_gmt":"2026-03-16T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/what-is-an-sfp-interface\/"},"modified":"2026-06-22T03:56:46","modified_gmt":"2026-06-22T03:56:46","slug":"what-is-an-sfp-interface","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-an-sfp-interface","title":{"rendered":"Giao di\u1ec7n SFP: \u0110\u1ecbnh ngh\u0129a, SFP vs. RJ45, C\u00f4ng d\u1ee5ng v\u00e0 \u1ee8ng d\u1ee5ng"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b-1024x536.jpg\" alt=\"SFP Interface: Definition, SFP vs. RJ45, Uses and Applications\" class=\"wp-image-3034\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2955de2118a14599803fba626a2adf8b.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, <strong>Giao di\u1ec7n SFP<\/strong> \u0111\u00e3 tr\u1edf th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 m\u00e1y ch\u1ee7 v\u1edbi c\u00e1c li\u00ean k\u1ebft m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao. Thay v\u00ec ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i c\u1ed5ng c\u1ed1 \u0111\u1ecbnh, giao di\u1ec7n SFP cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un thay th\u1ebf \u0111\u01b0\u1ee3c, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">m\u00f4-\u0111un b\u1ed9 thu ph\u00e1t<\/a>, gi\u00fap h\u1ed7 tr\u1ee3 c\u1ea3 k\u1ebft n\u1ed1i quang s\u1ee3i v\u00e0 \u0111\u1ed3ng tr\u00ean c\u00f9ng m\u1ed9t khe c\u1eafm v\u1eadt l\u00fd. Thi\u1ebft k\u1ebf m\u00f4-\u0111un n\u00e0y mang l\u1ea1i cho k\u1ef9 s\u01b0 m\u1ea1ng s\u1ef1 linh ho\u1ea1t v\u01b0\u1ee3t tr\u1ed9i khi x\u00e2y d\u1ef1ng c\u00e1c m\u1ea1ng doanh nghi\u1ec7p m\u1edf r\u1ed9ng, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng bao g\u1ed3m c\u00e1c c\u1ed5ng chuy\u00ean d\u1ee5ng <strong>C\u1ed5ng SFP<\/strong> b\u00ean c\u1ea1nh c\u00e1c c\u1ed5ng Ethernet truy\u1ec1n th\u1ed1ng. C\u00e1c c\u1ed5ng n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho k\u1ebft n\u1ed1i l\u00ean (uplink) gi\u1eefa c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, k\u1ebft n\u1ed1i s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa v\u00e0 t\u1ed5ng h\u1ee3p m\u1ea1ng b\u0103ng th\u00f4ng cao, n\u01a1i \u0111\u1ed9 tin c\u1eady v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Ch\u1ec9 b\u1eb1ng c\u00e1ch ch\u00e8n c\u00e1c lo\u1ea1i m\u00f4-\u0111un SFP kh\u00e1c nhau, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft b\u1ecb \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn, t\u1ed1c \u0111\u1ed9 v\u00e0 tri\u1ec3n khai kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, nh\u1eefng ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u t\u00ecm hi\u1ec3u v\u1ec1 m\u1ea1ng th\u01b0\u1eddng \u0111\u1eb7t ra nhi\u1ec1u c\u00e2u h\u1ecfi v\u1ec1 c\u00f4ng ngh\u1ec7 n\u00e0y. V\u00ed d\u1ee5, nhi\u1ec1u ng\u01b0\u1eddi th\u1eafc m\u1eafc li\u1ec7u c\u1ed5ng SFP c\u00f3 gi\u1ed1ng c\u1ed5ng Ethernet hay kh\u00f4ng, t\u1ea1i sao m\u1ed9t s\u1ed1 m\u1ea1ng l\u1ea1i \u01b0a chu\u1ed9ng SFP h\u01a1n RJ45, ho\u1eb7c nh\u1eefng l\u1ee3i th\u1ebf th\u1ef1c ti\u1ec5n m\u00e0 giao di\u1ec7n SFP mang l\u1ea1i trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 l\u1ef1a ch\u1ecdn ki\u1ebfn tr\u00fac m\u1ea1ng ph\u00f9 h\u1ee3p v\u00e0 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch ho\u1eb7c hi\u1ec7u n\u0103ng ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta s\u1ebd gi\u1ea3i th\u00edch r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao di\u1ec7n SFP c\u0169ng nh\u01b0 so s\u00e1nh ch\u00fang v\u1edbi m\u1ea1ng \u0111\u1ed3ng truy\u1ec1n th\u1ed1ng. Sau khi \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd hi\u1ec3u \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>giao di\u1ec7n SFP l\u00e0 g\u00ec v\u00e0 c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng<\/p><\/li>\n\n\n\n<li><p>m\u1ee5c \u0111\u00edch c\u1ee7a c\u00e1c c\u1ed5ng SFP tr\u00ean c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i<\/p><\/li>\n\n\n\n<li><p>s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa giao di\u1ec7n SFP v\u00e0 RJ45<\/p><\/li>\n\n\n\n<li><p>c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a giao di\u1ec7n SFP trong m\u1ea1ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>c\u00e1c m\u1eb9o x\u1eed l\u00fd s\u1ef1 c\u1ed1 th\u1ef1c ti\u1ec5n \u0111\u1ed1i v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 k\u1ebft n\u1ed1i SFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n l\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng, qu\u1ea3n tr\u1ecb vi\u00ean CNTT hay ng\u01b0\u1eddi mua thi\u1ebft b\u1ecb m\u1ea1ng \u0111ang \u0111\u00e1nh gi\u00e1 ph\u1ea7n c\u1ee9ng, b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n vai tr\u00f2 c\u1ee7a giao di\u1ec7n SFP v\u00e0 c\u00e1ch l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f Giao di\u1ec7n SFP l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Giao di\u1ec7n Small Form-Factor Pluggable (SFP)<\/strong> l\u00e0 m\u1ed9t giao di\u1ec7n m\u1ea1ng m\u00f4-\u0111un \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng kh\u00e1c nh\u1eb1m h\u1ed7 tr\u1ee3 c\u00e1c m\u00f4-\u0111un thu ph\u00e1t thay th\u1ebf \u0111\u01b0\u1ee3c. Thay v\u00ec t\u00edch h\u1ee3p tr\u1ef1c ti\u1ebfp m\u1ed9t c\u1ed5ng m\u1ea1ng c\u1ed1 \u0111\u1ecbnh nh\u01b0 RJ45 l\u00ean thi\u1ebft b\u1ecb, giao di\u1ec7n SFP cung c\u1ea5p m\u1ed9t khe c\u1eafm \u0111\u1ec3 ch\u1ea5p nh\u1eadn c\u00e1c m\u00f4-\u0111un c\u00f3 th\u1ec3 th\u00e1o r\u1eddi, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a>, cho ph\u00e9p c\u00f9ng m\u1ed9t ph\u1ea7n c\u1ee9ng h\u1ed7 tr\u1ee3 c\u00e1c m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn v\u00e0 t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng th\u1ef1c t\u1ebf, giao di\u1ec7n SFP cho ph\u00e9p thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i b\u1eb1ng c\u00e1p quang s\u1ee3i ho\u1eb7c c\u00e1p Ethernet \u0111\u1ed3ng, t\u00f9y thu\u1ed9c v\u00e0o m\u00f4-\u0111un \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o. Ki\u1ebfn tr\u00fac m\u00f4-\u0111un n\u00e0y l\u00e0 m\u1ed9t trong nh\u1eefng l\u00fd do khi\u1ebfn c\u00f4ng ngh\u1ec7 SFP \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ea1ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, giao di\u1ec7n SFP l\u00e0 khe c\u1eafm, c\u00f2n m\u00f4-\u0111un SFP l\u00e0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/492442.htm\">b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi<\/a> \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o khe c\u1eafm \u0111\u00f3 \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i m\u1ea1ng v\u1eadt l\u00fd.<\/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\/5c8b3935ab2547aeb98582df0cf0da6c.jpg\" alt=\"What Is an SFP Interface?\" class=\"wp-image-3035\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c8b3935ab2547aeb98582df0cf0da6c.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c8b3935ab2547aeb98582df0cf0da6c-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c8b3935ab2547aeb98582df0cf0da6c-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c8b3935ab2547aeb98582df0cf0da6c-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5c8b3935ab2547aeb98582df0cf0da6c-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ecbnh ngh\u0129a v\u1ec1 Small Form-Factor Pluggable (SFP)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-small-form-factor-pluggable-transceiver-guide\/\">B\u1ed9 thu ph\u00e1t nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm r\u1eddi<\/a> (SFP) l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n b\u1ed9 thu ph\u00e1t nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng, d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb m\u1ea1ng v\u1edbi c\u00e1p quang s\u1ee3i ho\u1eb7c c\u00e1p m\u1ea1ng \u0111\u1ed3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u00eau chu\u1ea9n SFP \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n nh\u1eb1m thay th\u1ebf c\u00e1c \u0111\u1ecbnh d\u1ea1ng b\u1ed9 thu ph\u00e1t l\u1edbn h\u01a1n nh\u01b0 Gigabit Interface Converter, mang l\u1ea1i k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n \u0111\u00e1ng k\u1ec3 nh\u01b0ng v\u1eabn duy tr\u00ec ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1. Nh\u1edd thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb m\u1ea1ng c\u00f3 th\u1ec3 t\u00edch h\u1ee3p nhi\u1ec1u giao di\u1ec7n t\u1ed1c \u0111\u1ed9 cao h\u01a1n tr\u00ean c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a c\u00f4ng ngh\u1ec7 SFP bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 thay n\u00f3ng<\/strong> \u2013 m\u00f4-\u0111un c\u00f3 th\u1ec3 ch\u00e8n ho\u1eb7c th\u00e1o ra m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p><strong>Kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u00f4-\u0111un<\/strong> \u2013 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i truy\u1ec1n d\u1eabn tr\u00ean c\u00f9ng m\u1ed9t giao di\u1ec7n<\/p><\/li>\n\n\n\n<li><p><strong>K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn<\/strong> \u2013 cho ph\u00e9p m\u1eadt \u0111\u1ed9 c\u1ed5ng cao h\u01a1n tr\u00ean ph\u1ea7n c\u1ee9ng m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p><strong>T\u1ed1c \u0111\u1ed9 linh ho\u1ea1t<\/strong> \u2013 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho Ethernet 1G v\u00e0 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng sang c\u00e1c bi\u1ebfn th\u1ec3 t\u1ed1c \u0111\u1ed9 cao h\u01a1n nh\u01b0 <a href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\" target=\"_self\">SFP+<\/a><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd nh\u1eefng \u01b0u \u0111i\u1ec3m n\u00e0y, SFP \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng \u0111\u1ecbnh d\u1ea1ng giao di\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao di\u1ec7n SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Giao di\u1ec7n SFP ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t khe c\u1eafm v\u1eadt l\u00fd tr\u00ean thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u1ec3 ch\u1ea5p nh\u1eadn m\u1ed9t m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488474.htm\">Single-mode fiber<\/a>. Khi \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o, m\u00f4-\u0111un n\u00e0y chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eeb thi\u1ebft b\u1ecb sang m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eabn ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng di\u1ec5n ra nh\u01b0 sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p>Thi\u1ebft b\u1ecb m\u1ea1ng g\u1eedi t\u00edn hi\u1ec7u d\u1eef li\u1ec7u \u0111i\u1ec7n t\u1edbi khe c\u1eafm SFP.<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un SFP \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o s\u1ebd chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u th\u00e0nh t\u00edn hi\u1ec7u quang cho truy\u1ec1n d\u1eabn qua s\u1ee3i quang ho\u1eb7c t\u00edn hi\u1ec7u \u0111i\u1ec7n cho k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng.<\/p><\/li>\n\n\n\n<li><p>T\u00edn hi\u1ec7u truy\u1ec1n \u0111i qua c\u00e1p m\u1ea1ng \u0111\u1ebfn thi\u1ebft b\u1ecb nh\u1eadn.<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un SFP \u1edf \u0111\u1ea7u nh\u1eadn s\u1ebd chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u tr\u1edf l\u1ea1i th\u00e0nh d\u1eef li\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 x\u1eed l\u00fd.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec m\u00f4-\u0111un \u0111\u1ea3m nhi\u1ec7m vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u, n\u00ean c\u00f9ng m\u1ed9t giao di\u1ec7n SFP c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i k\u1ebft n\u1ed1i, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>c\u00e1c li\u00ean k\u1ebft s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>c\u00e1c k\u1ebft n\u1ed1i s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>c\u00e1c k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng RJ45<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 linh ho\u1ea1t n\u00e0y cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng d\u1ec5 d\u00e0ng \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft b\u1ecb cho c\u00e1c ki\u1ebfn tr\u00fac m\u1ea1ng kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Giao di\u1ec7n SFP so v\u1edbi c\u00e1c giao di\u1ec7n m\u1ea1ng truy\u1ec1n th\u1ed1ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c giao di\u1ec7n m\u1ea1ng truy\u1ec1n th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c c\u1ed5ng Ethernet RJ45 c\u1ed1 \u0111\u1ecbnh, \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u0129nh vi\u1ec5n v\u00e0o thi\u1ebft b\u1ecb v\u00e0 ch\u1ec9 h\u1ed7 tr\u1ee3 m\u1ed9t lo\u1ea1i k\u1ebft n\u1ed1i v\u1eadt l\u00fd duy nh\u1ea5t. M\u1eb7c d\u00f9 nh\u1eefng c\u1ed5ng n\u00e0y \u0111\u01a1n gi\u1ea3n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed, ch\u00fang l\u1ea1i thi\u1ebfu t\u00ednh linh ho\u1ea1t c\u1ee7a c\u00e1c giao di\u1ec7n m\u00f4-\u0111un.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Giao di\u1ec7n SFP mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m h\u01a1n so v\u1edbi c\u00e1c c\u1ed5ng m\u1ea1ng c\u1ed1 \u0111\u1ecbnh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u00f4-\u0111un<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP kh\u00e1c nhau c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c nhau, bao g\u1ed3m c\u00e1p quang v\u00e0 c\u00e1p \u0111\u1ed3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn xa h\u01a1n<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP d\u1ef1a tr\u00ean c\u00e1p quang c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch t\u1eeb h\u00e0ng tr\u0103m m\u00e9t \u0111\u1ebfn h\u00e0ng ch\u1ee5c kil\u00f4m\u00e9t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao h\u01a1n<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0 m\u1ea1ng c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p k\u1ebft n\u1ed1i ch\u1ec9 b\u1eb1ng c\u00e1ch thay th\u1ebf m\u00f4-\u0111un thay v\u00ec thay to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00ednh linh ho\u1ea1t tri\u1ec3n khai cao h\u01a1n<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng m\u1ed9t m\u1eabu c\u00f4ng t\u1eafc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau b\u1eb1ng c\u00e1ch ch\u1ecdn m\u00f4-\u0111un SFP ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec nh\u1eefng l\u00fd do n\u00e0y, c\u00e1c giao di\u1ec7n SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft n\u1ed1i uplink gi\u1eefa c\u00e1c c\u00f4ng t\u1eafc, c\u00e1c k\u1ebft n\u1ed1i x\u01b0\u01a1ng s\u1ed1ng (backbone) v\u00e0 c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng kho\u1ea3ng c\u00e1ch xa, trong khi c\u00e1c c\u1ed5ng Ethernet truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f C\u1ed5ng SFP tr\u00ean thi\u1ebft b\u1ecb m\u1ea1ng c\u00f3 m\u1ee5c \u0111\u00edch g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a c\u1ed5ng SFP l\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao v\u00e0 linh ho\u1ea1t th\u00f4ng qua c\u00e1c m\u00f4-\u0111un thu ph\u00e1t c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau. Thay v\u00ec gi\u1edbi h\u1ea1n thi\u1ebft b\u1ecb m\u1ea1ng \u1edf m\u1ed9t lo\u1ea1i k\u1ebft n\u1ed1i duy nh\u1ea5t, c\u1ed5ng SFP cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean l\u1ef1a ch\u1ecdn m\u00f4-\u0111un ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean y\u00eau c\u1ea7u v\u1ec1 kho\u1ea3ng c\u00e1ch m\u1ea1ng, lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n v\u00e0 b\u0103ng th\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, c\u1ed5ng SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho <strong>s<\/strong>c\u00e1c k\u1ebft n\u1ed1i uplink gi\u1eefa c\u00e1c c\u00f4ng t\u1eafc, c\u00e1c k\u1ebft n\u1ed1i x\u01b0\u01a1ng s\u1ed1ng (backbone) v\u00e0 c\u00e1c k\u1ebft n\u1ed1i c\u00e1p quang kho\u1ea3ng c\u00e1ch xa. V\u00ec b\u1ea3n th\u00e2n c\u1ed5ng n\u00e0y c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn nhi\u1ec1u m\u00f4-\u0111un kh\u00e1c nhau, c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u1ea3 k\u1ebft n\u1ed1i Ethernet c\u00e1p quang v\u00e0 c\u00e1p \u0111\u1ed3ng m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf m\u00f4-\u0111un n\u00e0y khi\u1ebfn c\u1ed5ng SFP \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb trong c\u00e1c m\u1ea1ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng, n\u01a1i kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 th\u00edch \u1ee9ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/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\/60c781363e06496698aa4fed6cf1b06a.jpg\" alt=\"What Is the Purpose of SFP Ports in Network Devices?\" class=\"wp-image-3036\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/60c781363e06496698aa4fed6cf1b06a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/60c781363e06496698aa4fed6cf1b06a-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/60c781363e06496698aa4fed6cf1b06a-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/60c781363e06496698aa4fed6cf1b06a-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/60c781363e06496698aa4fed6cf1b06a-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u1ea1ng m\u00f4-\u0111un<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng m\u1ee5c \u0111\u00edch quan tr\u1ecdng nh\u1ea5t c\u1ee7a c\u1ed5ng SFP l\u00e0 cho ph\u00e9p k\u1ebft n\u1ed1i m\u1ea1ng theo m\u00f4-\u0111un. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c giao di\u1ec7n c\u1ed1 \u0111\u1ecbnh nh\u01b0 c\u1ed5ng Ethernet RJ45, c\u1ed5ng SFP cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng ch\u00e8n c\u00e1c m\u00f4-\u0111un thu ph\u00e1t kh\u00e1c nhau t\u00f9y theo thi\u1ebft k\u1ebf m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, c\u00f9ng m\u1ed9t c\u00f4ng t\u1eafc c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i m\u00f4-\u0111un c\u00e1p quang, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>(SX) module designed for distances up to ~550 meters. <a href=\"https:\/\/www.l-p.com\/products\/476091.htm\" target=\"_self\">c\u00e1c m\u00f4-\u0111un SFP \u0111a mode<\/a><\/p><\/li>\n\n\n\n<li><p>kho\u1ea3ng c\u00e1ch xa <a href=\"https:\/\/www.l-p.com\/products\/476763.htm\" target=\"_self\">c\u00e1c b\u1ed9 thu ph\u00e1t \u0111\u01a1n mode<\/a><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476813.htm\" target=\"_self\">C\u00e1c m\u00f4-\u0111un SFP \u0111\u1ed3ng<\/a><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn m\u00f4-\u0111un n\u00e0y mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf v\u1eadn h\u00e0nh \u0111\u00e1ng k\u1ec3. N\u1ebfu y\u00eau c\u1ea7u m\u1ea1ng thay \u0111\u1ed5i\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 n\u00e2ng c\u1ea5p m\u1ed9t k\u1ebft n\u1ed1i t\u1eeb c\u00e1p \u0111\u1ed3ng l\u00ean c\u00e1p quang\u2014qu\u1ea3n tr\u1ecb vi\u00ean ch\u1ec9 c\u1ea7n thay th\u1ebf m\u00f4-\u0111un SFP thay v\u00ec thay to\u00e0n b\u1ed9 c\u00f4ng t\u1eafc ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, c\u1ed5ng SFP gi\u00fap ph\u1ea7n c\u1ee9ng m\u1ea1ng tr\u1edf n\u00ean linh ho\u1ea1t v\u00e0 b\u1ec1n v\u1eefng h\u01a1n tr\u01b0\u1edbc c\u00e1c thay \u0111\u1ed5i trong t\u01b0\u01a1ng lai, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng CNTT \u0111ang ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u1ed7 tr\u1ee3 ph\u01b0\u01a1ng ti\u1ec7n linh ho\u1ea1t (c\u00e1p quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u1ee5c \u0111\u00edch quan tr\u1ecdng kh\u00e1c c\u1ee7a c\u1ed5ng SFP l\u00e0 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn. V\u1edbi m\u00f4-\u0111un ph\u00f9 h\u1ee3p \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t, c\u1ed5ng SFP c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1p quang ho\u1eb7c c\u00e1p Ethernet \u0111\u1ed3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP d\u1ef1a tr\u00ean c\u00e1p quang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p>k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>c\u00e1c k\u1ebft n\u1ed1i x\u01b0\u01a1ng s\u1ed1ng (backbone) t\u1ed1c \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un d\u1ef1a tr\u00ean c\u00e1p \u0111\u1ed3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>t\u00edch h\u1ee3p c\u00e1c thi\u1ebft b\u1ecb Ethernet c\u0169<\/p><\/li>\n\n\n\n<li><p>k\u1ebft n\u1ed1i c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p Cat5e ho\u1eb7c Cat6 ti\u00eau chu\u1ea9n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 linh ho\u1ea1t n\u00e0y cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c thi\u1ebft k\u1ebf m\u1ea1ng c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u n\u0103ng, chi ph\u00ed v\u00e0 y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch, trong khi v\u1eabn s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t giao di\u1ec7n v\u1eadt l\u00fd tr\u00ean thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1edf r\u1ed9ng m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ed5ng SFP c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c m\u1edf r\u1ed9ng m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao. Nhi\u1ec1u c\u00f4ng t\u1eafc bao g\u1ed3m c\u00e1c c\u1ed5ng SFP chuy\u00ean d\u1ee5ng ho\u1eb7c c\u00e1c phi\u00ean b\u1ea3n n\u00e2ng cao nh\u01b0 c\u1ed5ng SFP+ nh\u1eb1m ph\u1ee5c v\u1ee5 cho k\u1ebft n\u1ed1i uplink v\u00e0 backbone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So v\u1edbi c\u00e1c c\u1ed5ng Ethernet ti\u00eau chu\u1ea9n, c\u00e1c k\u1ebft n\u1ed1i d\u1ef1a tr\u00ean SFP th\u01b0\u1eddng cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>b\u0103ng th\u00f4ng cao h\u01a1n cho c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c c\u00f4ng t\u1eafc<\/p><\/li>\n\n\n\n<li><p>kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn xa h\u01a1n khi s\u1eed d\u1ee5ng c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>gi\u1ea3m t\u1eafc ngh\u1ebdn m\u1ea1ng \u1edf c\u00e1c l\u1edbp t\u1ed5ng h\u1ee3p (aggregation layers)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd nh\u1eefng \u01b0u \u0111i\u1ec3m n\u00e0y, c\u1ed5ng SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c c\u00f4ng t\u1eafc truy c\u1eadp (access switches) v\u1edbi c\u00e1c c\u00f4ng t\u1eafc ph\u00e2n ph\u1ed1i (distribution switches)<\/p><\/li>\n\n\n\n<li><p>c\u00e1c m\u00e1y ch\u1ee7 v\u1edbi c\u00e1c c\u1ea5u tr\u00fac m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao<\/p><\/li>\n\n\n\n<li><p>c\u00e1c t\u1ee7 rack trung t\u00e2m d\u1eef li\u1ec7u v\u1edbi c\u00e1c l\u1edbp t\u1ed5ng h\u1ee3p (aggregation layers)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch cho ph\u00e9p l\u1ef1a ch\u1ecdn m\u00f4-\u0111un linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i hi\u1ec7u n\u0103ng cao, c\u1ed5ng SFP \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c ki\u1ebfn tr\u00fac m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f C\u1ed5ng SFP c\u00f3 gi\u1ed1ng c\u1ed5ng Ethernet kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn trong l\u0129nh v\u1ef1c m\u1ea1ng l\u00e0 cho r\u1eb1ng c\u1ed5ng SFP gi\u1ed1ng nh\u01b0 c\u1ed5ng Ethernet. Th\u1ef1c t\u1ebf, hai lo\u1ea1i c\u1ed5ng n\u00e0y kh\u00f4ng gi\u1ed1ng nhau. Ethernet l\u00e0 m\u1ed9t giao th\u1ee9c truy\u1ec1n th\u00f4ng m\u1ea1ng, trong khi c\u1ed5ng SFP l\u00e0 m\u1ed9t giao di\u1ec7n ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c m\u00f4-\u0111un thu ph\u00e1t c\u00f3 th\u1ec3 th\u00e1o l\u1eafp.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i c\u00e1ch kh\u00e1c, Ethernet x\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u1ea1ng, c\u00f2n c\u1ed5ng SFP x\u00e1c \u0111\u1ecbnh c\u00e1ch thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1eadt l\u00fd v\u1edbi ph\u01b0\u01a1ng ti\u1ec7n m\u1ea1ng. Do s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y, c\u00e1c giao di\u1ec7n SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c m\u1ea1ng Ethernet\u2014nh\u01b0ng b\u1ea3n th\u00e2n ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 Ethernet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng khi l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb m\u1ea1ng, c\u1ea5u h\u00ecnh c\u00f4ng t\u1eafc ho\u1eb7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i.<\/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\/38a6839d77224140b3c25fb3e588fbab.jpg\" alt=\"Is an SFP Port the Same as Ethernet Port?\" class=\"wp-image-3037\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38a6839d77224140b3c25fb3e588fbab.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38a6839d77224140b3c25fb3e588fbab-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38a6839d77224140b3c25fb3e588fbab-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38a6839d77224140b3c25fb3e588fbab-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38a6839d77224140b3c25fb3e588fbab-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Ethernet v\u00e0 SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ethernet l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 m\u1ea1ng \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a b\u1edfi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3-ethernet-standard-explained\/\">IEEE 802.3<\/a>, quy \u0111\u1ecbnh c\u00e1ch c\u00e1c thi\u1ebft b\u1ecb giao ti\u1ebfp qua m\u1ea1ng c\u1ee5c b\u1ed9 (LAN). Ti\u00eau chu\u1ea9n Ethernet x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ecbnh d\u1ea1ng khung, t\u1ed1c \u0111\u1ed9 truy\u1ec1n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t c\u1ed5ng SFP, m\u1eb7t kh\u00e1c, l\u00e0 m\u1ed9t khe c\u1eafm giao di\u1ec7n ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea5p nh\u1eadn c\u00e1c m\u00f4-\u0111un thu ph\u00e1t c\u00f3 th\u1ec3 c\u1eafm r\u1eddi. C\u00e1c m\u00f4-\u0111un n\u00e0y cho ph\u00e9p thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n m\u1ea1ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1p quang s\u1ee3i ho\u1eb7c c\u00e1p \u0111\u1ed3ng Ethernet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh c\u00f3 th\u1ec3 t\u00f3m t\u1eaft nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ethernet<\/strong> \u2192 M\u1ed9t giao th\u1ee9c m\u1ea1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u qua c\u00e1c m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p><strong>SFP<\/strong> \u2192 M\u1ed9t giao di\u1ec7n v\u1eadt l\u00fd m\u00f4-\u0111un \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i ph\u1ea7n c\u1ee9ng m\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec c\u00e1c m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 t\u00edn hi\u1ec7u Ethernet, n\u00ean nhi\u1ec1u m\u1ea1ng Ethernet s\u1eed d\u1ee5ng c\u00e1c giao di\u1ec7n SFP cho c\u00e1c k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i sao Nhi\u1ec1u B\u1ed9 Chuy\u1ec3n M\u1ea1ch C\u00f3 C\u1ea3 Hai Lo\u1ea1i C\u1ed5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn doanh nghi\u1ec7p bao g\u1ed3m c\u1ea3 c\u1ed5ng Ethernet RJ45 v\u00e0 c\u1ed5ng SFP v\u00ec ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch m\u1ea1ng kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ed5ng Ethernet RJ45 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>k\u1ebft n\u1ed1i m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i<\/p><\/li>\n\n\n\n<li><p>c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng kho\u1ea3ng c\u00e1ch ng\u1eafn trong v\u0103n ph\u00f2ng<\/p><\/li>\n\n\n\n<li><p>ti\u00eau chu\u1ea9n <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-twisted-pair-copper-cable-and-how-does-it-work\/\" target=\"_blank\" rel=\"\">c\u00e1p \u0111\u1ed3ng<\/a> nh\u01b0 Cat5e ho\u1eb7c Cat6<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ed5ng SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>li\u00ean k\u1ebft n\u00e2ng c\u1ea5p gi\u1eefa c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n\n\n\n<li><p>c\u00e1c k\u1ebft n\u1ed1i s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p>t\u1ed5ng h\u1ee3p m\u1ea1ng b\u0103ng th\u00f4ng cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p c\u1ea3 hai lo\u1ea1i c\u1ed5ng, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac m\u1ea1ng linh ho\u1ea1t h\u01a1n. C\u00e1c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 b\u1eb1ng c\u00e1c c\u1ed5ng Ethernet \u0111\u1ed3ng trong khi s\u1eed d\u1ee5ng c\u1ed5ng SFP cho c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c li\u00ean k\u1ebft gi\u1eefa c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi N\u00ean S\u1eed D\u1ee5ng Ethernet Hay SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa c\u1ed5ng Ethernet RJ45 v\u00e0 giao di\u1ec7n SFP ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf m\u1ea1ng, kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 y\u00eau c\u1ea7u hi\u1ec7u n\u0103ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ebft n\u1ed1i Ethernet RJ45 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i<\/p><\/li>\n\n\n\n<li><p>kho\u1ea3ng c\u00e1ch m\u1ea1ng ng\u1eafn (th\u01b0\u1eddng d\u01b0\u1edbi 100 m\u00e9t)<\/p><\/li>\n\n\n\n<li><p>c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ed3ng hi\u1ec7n c\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ebft n\u1ed1i SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>y\u00eau c\u1ea7u truy\u1ec1n d\u1eabn quang s\u1ee3i<\/p><\/li>\n\n\n\n<li><p>c\u00e1c li\u00ean k\u1ebft m\u1ea1ng ph\u1ea3i bao ph\u1ee7 kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n<\/p><\/li>\n\n\n\n<li><p>c\u1ea7n b\u0103ng th\u00f4ng cao h\u01a1n ho\u1eb7c \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n cho c\u00e1c li\u00ean k\u1ebft n\u00e2ng c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng doanh nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, c\u1ea3 hai c\u00f4ng ngh\u1ec7 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng song song. C\u00e1c c\u1ed5ng Ethernet cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i c\u1ee5c b\u1ed9 thu\u1eadn ti\u1ec7n, trong khi c\u00e1c c\u1ed5ng SFP h\u1ed7 tr\u1ee3 c\u00e1c li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao k\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, m\u00e1y ch\u1ee7 v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f SFP so v\u1edbi RJ45: B\u1ea1n N\u00ean S\u1eed D\u1ee5ng Giao Di\u1ec7n N\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi thi\u1ebft k\u1ebf c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng, m\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 n\u00ean s\u1eed d\u1ee5ng <strong>giao di\u1ec7n SFP<\/strong> hay c\u00e1c <strong>c\u1ed5ng Ethernet RJ45 truy\u1ec1n th\u1ed1ng<\/strong>. C\u1ea3 hai c\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ea1ng doanh nghi\u1ec7p, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o ki\u1ebfn tr\u00fac m\u1ea1ng, kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 y\u00eau c\u1ea7u m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ed5ng RJ45 th\u01b0\u1eddng g\u1eafn li\u1ec1n v\u1edbi c\u00e1c k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i nh\u01b0 m\u00e1y t\u00ednh, m\u00e1y in v\u00e0 \u0111i\u1ec3m truy c\u1eadp. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c giao di\u1ec7n SFP l\u00e0 c\u00e1c c\u1ed5ng m\u00f4-\u0111un \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c m\u00f4-\u0111un thu ph\u00e1t c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i quang s\u1ee3i v\u00e0 c\u00e1c li\u00ean k\u1ebft n\u00e2ng c\u1ea5p t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa SFP v\u00e0 RJ45 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 v\u1eadn h\u00e0nh, bao g\u1ed3m kho\u1ea3ng c\u00e1ch truy\u1ec1n, m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 chi ph\u00ed 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\/45544ba5bf1940c7bdf7fe2e1a369d49.jpg\" alt=\"SFP vs. RJ45: Which Interface Should You Use?\" class=\"wp-image-3038\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/45544ba5bf1940c7bdf7fe2e1a369d49.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/45544ba5bf1940c7bdf7fe2e1a369d49-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/45544ba5bf1940c7bdf7fe2e1a369d49-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/45544ba5bf1940c7bdf7fe2e1a369d49-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/45544ba5bf1940c7bdf7fe2e1a369d49-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">So S\u00e1nh Kho\u1ea3ng C\u00e1ch Truy\u1ec1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 nh\u1ea5t gi\u1eefa k\u1ebft n\u1ed1i SFP v\u00e0 RJ45 l\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u1ed1i \u0111a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ed5ng Ethernet RJ45 th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1p \u0111\u1ed3ng nh\u01b0 Cat5e ho\u1eb7c Cat6. Theo ti\u00eau chu\u1ea9n IEEE 802.3, c\u00e1c li\u00ean k\u1ebft Ethernet \u0111\u1ed3ng ti\u00eau chu\u1ea9n h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn 100 m\u00e9t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, c\u00e1c giao di\u1ec7n SFP c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n nhi\u1ec1u t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i m\u00f4-\u0111un \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/478230.htm\" target=\"_self\"><strong>SFP s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/strong><\/a><strong> m\u00f4-\u0111un<\/strong>: th\u01b0\u1eddng h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch t\u1eeb 300\u2013550 m\u00e9t<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476092.htm\" target=\"_self\"><strong>SFP s\u1ee3i quang \u0111\u01a1n mode<\/strong><\/a><strong> m\u00f4-\u0111un<\/strong>: c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch t\u1eeb v\u00e0i kil\u00f4m\u00e9t \u0111\u1ebfn h\u01a1n 40 km<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd kh\u1ea3 n\u0103ng n\u00e0y, c\u00e1c giao di\u1ec7n SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0, m\u1ea1ng khu\u00f4n vi\u00ean v\u00e0 c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng v\u00e0 nhi\u1ec7t l\u01b0\u1ee3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u0169ng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c khi so s\u00e1nh c\u00e1c giao di\u1ec7n SFP v\u00e0 RJ45.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ebft n\u1ed1i Ethernet \u0111\u1ed3ng th\u01b0\u1eddng ti\u00eau th\u1ee5 nhi\u1ec1u \u0111i\u1ec7n n\u0103ng h\u01a1n v\u00ec t\u00edn hi\u1ec7u \u0111i\u1ec7n ph\u1ea3i truy\u1ec1n qua c\u00e1p \u0111\u1ed3ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra th\u00eam nhi\u1ec7t trong c\u00e1c tri\u1ec3n khai b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP d\u1ef1a tr\u00ean s\u1ee3i quang n\u00f3i chung ti\u00eau th\u1ee5 \u00edt \u0111i\u1ec7n n\u0103ng h\u01a1n v\u00e0 sinh nhi\u1ec7t \u00edt h\u01a1n, \u0111\u1eb7c bi\u1ec7t khi d\u00f9ng cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa. Trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u l\u1edbn n\u01a1i h\u00e0ng tr\u0103m c\u1ed5ng t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c tri\u1ec3n khai, s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec l\u00fd do n\u00e0y, nhi\u1ec1u m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i \u01b0a chu\u1ed9ng c\u00e1c giao di\u1ec7n SFP ho\u1eb7c c\u00e1c phi\u00ean b\u1ea3n n\u00e2ng cao nh\u01b0 SFP+ d\u1ef1a tr\u00ean s\u1ee3i quang cho c\u00e1c k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 N\u0103ng M\u1edf R\u1ed9ng M\u1ea1ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t l\u1ee3i th\u1ebf kh\u00e1c c\u1ee7a c\u00e1c giao di\u1ec7n SFP l\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng m\u00f4-\u0111un. V\u00ec c\u00e1c c\u1ed5ng SFP ch\u1ea5p nh\u1eadn c\u00e1c m\u00f4-\u0111un thu ph\u00e1t c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh k\u1ebft n\u1ed1i m\u1ea1ng m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf to\u00e0n b\u1ed9 b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng c\u00f3 c\u1ed5ng SFP c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c m\u00f4-\u0111un s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 t\u1ea7m ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>c\u00e1c m\u00f4-\u0111un s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 t\u1ea7m xa<\/p><\/li>\n\n\n\n<li><p>\u0111\u1ed3ng <a href=\"https:\/\/www.l-p.com\/products\/476770.htm\" target=\"_self\">SFP RJ45<\/a> m\u00f4-\u0111un<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 linh ho\u1ea1t n\u00e0y cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c th\u00edch \u1ee9ng v\u1edbi nh\u1eefng y\u00eau c\u1ea7u m\u1ea1ng thay \u0111\u1ed5i, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u0103ng b\u0103ng th\u00f4ng ho\u1eb7c m\u1edf r\u1ed9ng kho\u1ea3ng c\u00e1ch m\u1ea1ng. Ch\u1ec9 c\u1ea7n thay th\u1ebf module, ph\u1ea7n c\u1ee9ng hi\u1ec7n c\u00f3 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c t\u00f9y ch\u1ecdn k\u1ebft n\u1ed1i m\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1ee3c l\u1ea1i, c\u1ed5ng RJ45 l\u00e0 c\u00e1c giao di\u1ec7n c\u1ed1 \u0111\u1ecbnh v\u00e0 kh\u00f4ng d\u1ec5 d\u00e0ng th\u00edch \u1ee9ng v\u1edbi c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn kh\u00e1c nhau ho\u1eb7c c\u00e1c y\u00eau c\u1ea7u v\u1ec1 kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi Ph\u00ed Tri\u1ec3n Khai<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Chi ph\u00ed th\u01b0\u1eddng l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t khi l\u1ef1a ch\u1ecdn gi\u1eefa k\u1ebft n\u1ed1i SFP v\u00e0 RJ45.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet RJ45 th\u01b0\u1eddng ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn, \u0111\u1eb7c bi\u1ec7t khi c\u00e1p \u0111\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t s\u1eb5n. C\u00e1p Ethernet \u0111\u1ed3ng v\u00e0 c\u1ed5ng RJ45 r\u1ea5t ph\u1ed5 bi\u1ebfn v\u00e0 kh\u00f4ng y\u00eau c\u1ea7u thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ebft n\u1ed1i d\u1ef1a tr\u00ean SFP c\u00f3 th\u1ec3 ph\u00e1t sinh chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n do c\u1ea7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>Module b\u1ed9 thu ph\u00e1t SFP<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebft b\u1ecb m\u1ea1ng t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, giao di\u1ec7n SFP c\u00f3 th\u1ec3 mang l\u1ea1i l\u1ee3i th\u1ebf chi ph\u00ed d\u00e0i h\u1ea1n trong c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn v\u00ec ch\u00fang h\u1ed7 tr\u1ee3 b\u0103ng th\u00f4ng cao h\u01a1n, kho\u1ea3ng c\u00e1ch xa h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u1ec5 d\u00e0ng h\u01a1n. \u0110\u1ed1i v\u1edbi m\u1ea1ng doanh nghi\u1ec7p, m\u00f4i tr\u01b0\u1eddng khu\u00f4n vi\u00ean v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u, nh\u1eefng l\u1ee3i \u00edch n\u00e0y th\u01b0\u1eddng v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi kho\u1ea3n \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Giao di\u1ec7n SFP so v\u1edbi giao di\u1ec7n RJ45<\/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>Giao di\u1ec7n SFP<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Giao di\u1ec7n RJ45<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i giao di\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Khe c\u1eafm b\u1ed9 thu ph\u00e1t m\u00f4-\u0111un<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ed5ng Ethernet c\u1ed1 \u0111\u1ecbnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ph\u01b0\u01a1ng ti\u1ec7n k\u1ebft n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang ho\u1eb7c \u0111\u1ed3ng (th\u00f4ng qua module SFP)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p Ethernet \u0111\u1ed3ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i c\u00e1p \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n mode, s\u1ee3i \u0111a mode ho\u1eb7c module SFP RJ45<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p Ethernet Cat5e, Cat6, Cat6a<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn h\u00e0ng ch\u1ee5c kil\u00f4m\u00e9t t\u00f9y thu\u1ed9c v\u00e0o module<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 100 m\u00e9t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>T\u00ednh linh ho\u1ea1t c\u1ee7a m\u1ea1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao \u2013 c\u00e1c module c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i h\u1ed7 tr\u1ee3 c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n v\u00e0 kho\u1ea3ng c\u00e1ch kh\u00e1c nhau<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ea1n ch\u1ebf \u2013 giao di\u1ec7n \u0111\u1ed3ng c\u1ed1 \u0111\u1ecbnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 n\u00e2ng c\u1ea5p b\u1eb1ng c\u00e1ch thay th\u1ebf c\u00e1c module SFP<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i uplink c\u1ee7a switch, li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u, k\u1ebft n\u1ed1i backbone<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i, m\u1ea1ng v\u0103n ph\u00f2ng<\/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>Th\u01b0\u1eddng th\u1ea5p h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c module s\u1ee3i quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n \u1edf c\u00e1c c\u1ed5ng \u0111\u1ed3ng t\u1ed1c \u0111\u1ed9 cao<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Chi Ph\u00ed Tri\u1ec3n Khai<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n (module v\u00e0 c\u00e1p s\u1ee3i quang)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed th\u1ea5p h\u01a1n cho tri\u1ec3n khai kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n ghi nh\u1edb ch\u00ednh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Giao di\u1ec7n RJ45<\/strong> r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn v\u00e0 c\u00e1c thi\u1ebft b\u1ecb Ethernet ti\u00eau chu\u1ea9n.<\/p><\/li>\n\n\n\n<li><p><strong>giao di\u1ec7n SFP<\/strong> th\u00edch h\u1ee3p h\u01a1n cho c\u00e1c uplink t\u1ed1c \u0111\u1ed9 cao, li\u00ean k\u1ebft s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng doanh nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, c\u1ea3 hai giao di\u1ec7n \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng song song: c\u00e1c c\u1ed5ng RJ45 x\u1eed l\u00fd k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9, trong khi c\u00e1c giao di\u1ec7n SFP cung c\u1ea5p c\u00e1c li\u00ean k\u1ebft backbone hi\u1ec7u su\u1ea5t cao gi\u1eefa c\u00e1c switch v\u00e0 c\u00e1c l\u1edbp m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa SFP v\u00e0 RJ45 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u m\u1ea1ng c\u1ee5 th\u1ec3. Nhi\u1ec1u thi\u1ebft k\u1ebf m\u1ea1ng hi\u1ec7n \u0111\u1ea1i k\u1ebft h\u1ee3p c\u1ea3 hai c\u00f4ng ngh\u1ec7 \u2014 s\u1eed d\u1ee5ng c\u1ed5ng RJ45 cho k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9 v\u00e0 giao di\u1ec7n SFP cho c\u00e1c uplink t\u1ed1c \u0111\u1ed9 cao v\u00e0 k\u1ebft n\u1ed1i backbone.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a giao di\u1ec7n SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Giao di\u1ec7n SFP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i nh\u1edd thi\u1ebft k\u1ebf m\u00f4-\u0111un, kh\u1ea3 n\u0103ng t\u1ed1c \u0111\u1ed9 cao v\u00e0 h\u1ed7 tr\u1ee3 linh ho\u1ea1t c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn. T\u00ednh \u0111a d\u1ee5ng c\u1ee7a ch\u00fang khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p cho m\u1ea1ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng, gi\u00fap c\u00e1c t\u1ed5 ch\u1ee9c x\u00e2y d\u1ef1ng c\u00e1c m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch c\u1eafm c\u00e1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/blog\/types-of-sfp-modules-1g-10g-and-25g-network-guide.htm\">lo\u1ea1i module SFP kh\u00e1c nhau<\/a>, k\u1ef9 s\u01b0 m\u1ea1ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft b\u1ecb cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng.<\/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\/6d0335ea303a474b9988a4f96b0b05a4.jpg\" alt=\"Common Applications of SFP Interfaces\" class=\"wp-image-3039\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d0335ea303a474b9988a4f96b0b05a4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d0335ea303a474b9988a4f96b0b05a4-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d0335ea303a474b9988a4f96b0b05a4-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d0335ea303a474b9988a4f96b0b05a4-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6d0335ea303a474b9988a4f96b0b05a4-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft n\u1ed1i uplink c\u1ee7a switch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a giao di\u1ec7n SFP l\u00e0 k\u1ebft n\u1ed1i uplink c\u1ee7a switch. Trong m\u1ea1ng doanh nghi\u1ec7p, c\u1ed5ng SFP th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c switch truy c\u1eadp v\u1edbi switch ph\u00e2n ph\u1ed1i ho\u1eb7c switch l\u00f5i, t\u1ea1o th\u00e0nh li\u00ean k\u1ebft backbone t\u1ed1c \u0111\u1ed9 cao. Nh\u1edd s\u1eed d\u1ee5ng c\u00e1c module SFP, c\u00e1c uplink n\u00e0y c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i s\u1ee3i quang ho\u1eb7c \u0111\u1ed3ng, gi\u00fap qu\u1ea3n tr\u1ecb vi\u00ean linh ho\u1ea1t l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ti\u1ec7n t\u1ed1i \u01b0u v\u1ec1 b\u0103ng th\u00f4ng, kho\u1ea3ng c\u00e1ch v\u00e0 b\u1ed1 tr\u00ed m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea1ng s\u1ee3i quang trung t\u00e2m d\u1eef li\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a> m\u00f4i tr\u01b0\u1eddng, giao di\u1ec7n SFP \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef v\u00e0 switch m\u1ea1ng. C\u00e1c module SFP d\u1ef1a tr\u00ean s\u1ee3i quang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u1eb1m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u0103ng b\u0103ng th\u00f4ng, h\u1ed7 tr\u1ee3 c\u00e1c k\u1ebft n\u1ed1i 1G, 10G v\u00e0 th\u1eadm ch\u00ed t\u1ed1c \u0111\u1ed9 cao h\u01a1n. Nh\u1edd t\u1eadn d\u1ee5ng c\u00e1c c\u1ed5ng SFP, m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 th\u1ec3 duy tr\u00ec t\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u1ea3n l\u00fd c\u00e1p th\u00f4ng qua c\u00e1c b\u1ed9 thu ph\u00e1t m\u00f4-\u0111un, chu\u1ea9n h\u00f3a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Li\u00ean k\u1ebft s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 khu\u00f4n vi\u00ean, giao di\u1ec7n SFP cho ph\u00e9p k\u1ebft n\u1ed1i s\u1ee3i quang kho\u1ea3ng c\u00e1ch xa. C\u00e1c module SFP s\u1ee3i \u0111\u01a1n mode c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean v\u00e0i kil\u00f4m\u00e9t, r\u1ea5t l\u00fd t\u01b0\u1edfng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c t\u00f2a nh\u00e0, v\u0103n ph\u00f2ng t\u1eeb xa ho\u1eb7c trung t\u00e2m vi\u1ec5n th\u00f4ng. Kh\u1ea3 n\u0103ng n\u00e0y cho ph\u00e9p c\u00e1c nh\u00e0 khai th\u00e1c m\u1ea1ng duy tr\u00ec hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh tr\u00ean c\u00e1c khu v\u1ef1c \u0111\u1ecba l\u00fd r\u1ed9ng l\u1edbn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Giao di\u1ec7n SFP c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao, v\u00ed d\u1ee5 nh\u01b0 c\u00e1c l\u1edbp t\u1eadp h\u1ee3p v\u00e0 backbone. C\u00e1c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475817.htm\">m\u00f4-\u0111un SFP+ <\/a>h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i 10G, 25G ho\u1eb7c th\u1eadm ch\u00ed 40G, cung c\u1ea5p t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi b\u0103ng th\u00f4ng cao nh\u01b0 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, \u1ea3o h\u00f3a v\u00e0 chuy\u1ec3n d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p nhi\u1ec1u c\u1ed5ng SFP, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c c\u1ea5u tr\u00fac m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai, th\u00edch \u1ee9ng v\u1edbi nhu c\u1ea7u l\u01b0u l\u01b0\u1ee3ng ng\u00e0y c\u00e0ng thay \u0111\u1ed5i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 <strong>T\u00f3m T\u1eaft<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh m\u00f4-\u0111un, kh\u1ea3 n\u0103ng linh ho\u1ea1t v\u1ec1 ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n d\u1eabn v\u00e0 kh\u1ea3 n\u0103ng t\u1ed1c \u0111\u1ed9 cao c\u1ee7a c\u00e1c giao di\u1ec7n SFP khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong m\u1ea1ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng. Ch\u00fang cho ph\u00e9p c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf m\u1ea1ng x\u00e2y d\u1ef1ng c\u00e1c m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao m\u00e0 kh\u00f4ng c\u1ea7n thay th\u1ebf ph\u1ea7n c\u1ee9ng li\u00ean t\u1ee5c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f C\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn giao di\u1ec7n SFP v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c giao di\u1ec7n SFP mang l\u1ea1i t\u00ednh linh ho\u1ea1t v\u00e0 hi\u1ec7u su\u1ea5t cao, c\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng th\u01b0\u1eddng g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn <strong>t\u01b0\u01a1ng th\u00edch module, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u1ebft n\u1ed1i v\u00e0 sai l\u1ec7ch lo\u1ea1i c\u00e1p quang<\/strong>. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng s\u1ef1 c\u1ed1 n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 duy tr\u00ec k\u1ebft n\u1ed1i m\u1ea1ng \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u.<\/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\/8598d8286374466087da7a44667dfb3a.jpg\" alt=\"Common SFP Interface Issues and Troubleshooting\" class=\"wp-image-3040\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8598d8286374466087da7a44667dfb3a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8598d8286374466087da7a44667dfb3a-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8598d8286374466087da7a44667dfb3a-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8598d8286374466087da7a44667dfb3a-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8598d8286374466087da7a44667dfb3a-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">V\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p nh\u1ea5t \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o tr\u00ean c\u00e1c di\u1ec5n \u0111\u00e0n v\u00e0 trong th\u1ef1c t\u1ebf m\u1ea1ng l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\">s\u1ef1 t\u01b0\u01a1ng th\u00edch c\u1ee7a module SFP<\/a>. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c module SFP \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng v\u1edbi m\u1ecdi switch ho\u1eb7c router do h\u1ea1n ch\u1ebf t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t ho\u1eb7c gi\u1edbi h\u1ea1n ph\u1ea7n m\u1ec1m firmware. M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb \u00e1p d\u1ee5ng c\u01a1 ch\u1ebf kh\u00f3a nh\u00e0 s\u1ea3n xu\u1ea5t (vendor lock), ch\u1ec9 ch\u1ea5p nh\u1eadn c\u00e1c module \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb9o \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra \u0111\u1eb7c t\u1ea3 thi\u1ebft b\u1ecb \u0111\u1ec3 bi\u1ebft c\u00e1c model module SFP \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh t\u1ed1c \u0111\u1ed9 module (1G, 10G ho\u1eb7c SFP+) kh\u1edbp v\u1edbi lo\u1ea1i c\u1ed5ng.<\/p><\/li>\n\n\n\n<li><p>C\u00e2n nh\u1eafc s\u1eed d\u1ee5ng <a href=\"https:\/\/www.l-p.com\/products\/491454.htm\" target=\"_self\">c\u00e1c m\u00f4-\u0111un b\u00ean th\u1ee9 ba<br><\/a> \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn d\u00e0nh ri\u00eang cho ph\u1ea7n c\u1ee9ng c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch th\u01b0\u1eddng bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng m\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c module kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n, ngay c\u1ea3 khi k\u1ebft n\u1ed1i v\u1eadt l\u00fd tr\u00f4ng \u0111\u00fang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ec7ch t\u1ed1c \u0111\u1ed9 (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/difference-between-sfp-and-sfp-plus-transceivers\/\">SFP so v\u1edbi SFP+<\/a>)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn kh\u00e1c x\u1ea3y ra khi c\u00e0i \u0111\u1eb7t t\u1ed1c \u0111\u1ed9 gi\u1eefa c\u00e1c c\u1ed5ng SFP v\u00e0 module kh\u00f4ng kh\u1edbp. V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u00e8n m\u1ed9t <a href=\"https:\/\/www.l-p.com\/products\/477525.htm\" target=\"_self\">module SFP+ 10G<\/a> v\u00e0o c\u1ed5ng SFP 1G<\/p><\/li>\n\n\n\n<li><p>Tr\u1ed9n l\u1eabn <a href=\"https:\/\/www.l-p.com\/products\/478227.htm\" target=\"_self\">SFP 1G<\/a> v\u00e0 c\u00e1c c\u1ed5ng SFP+ 10G trong c\u00f9ng m\u1ed9t k\u1ebft n\u1ed1i m\u00e0 kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf th\u01b0\u01a1ng l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng sai l\u1ec7ch n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c k\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn<\/p><\/li>\n\n\n\n<li><p>L\u1ed7i m\u1ea1ng ho\u1eb7c hi\u1ec7u su\u1ea5t ch\u1eadm<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn s\u1ef1 t\u01b0\u01a1ng th\u00edch t\u1ed1c \u0111\u1ed9 gi\u1eefa c\u1ed5ng v\u00e0 module tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o c\u00e1c c\u00e0i \u0111\u1eb7t t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng (auto-negotiation) \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t m\u1ea1ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c sai l\u1ec7ch t\u1ed1c \u0111\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ec7ch lo\u1ea1i c\u00e1p quang (<a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/single-mode-vs-multimode-optical-modules\/\">SMF so v\u1edbi MMF<\/a>)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP d\u00f9ng c\u00e1p quang ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i c\u00e1p quang \u0111ang s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/strong> c\u00e1c module n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p><strong>S\u1ee3i quang \u0111a mode (MMF)<\/strong> c\u00e1c module n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho kho\u1ea3ng c\u00e1ch ng\u1eafn \u0111\u1ebfn trung b\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng sai lo\u1ea1i c\u00e1p quang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u k\u00e9m. C\u00e1c tri\u1ec7u ch\u1ee9ng bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i cao<\/p><\/li>\n\n\n\n<li><p>Suy gi\u1ea3m hi\u1ec7u su\u1ea5t m\u1ea1ng b\u1ea5t ng\u1edd<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u00e1p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh \u0111\u1eb7c t\u1ea3 module v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang hi\u1ec7n c\u00f3<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh tr\u1ed9n l\u1eabn c\u00e1p quang \u0111\u01a1n mode (SMF) v\u00e0 \u0111a mode (MMF) trong c\u00f9ng m\u1ed9t k\u1ebft n\u1ed1i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ea9n \u0111o\u00e1n l\u1ed7i c\u1ed5ng SFP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 giao di\u1ec7n SFP m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, c\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng n\u00ean:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m tra tr\u1ea1ng th\u00e1i module v\u00e0 c\u1ed5ng<\/strong> b\u1eb1ng c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n tr\u00ean switch<\/p><\/li>\n\n\n\n<li><p><strong>X\u00e1c minh lo\u1ea1i c\u00e1p v\u00e0 chi\u1ec1u d\u00e0i c\u00e1p<\/strong> so v\u1edbi \u0111\u1eb7c t\u1ea3 module<\/p><\/li>\n\n\n\n<li><p><strong>Ki\u1ec3m tra h\u01b0 h\u1ecfng v\u1eadt l\u00fd<\/strong> tr\u00ean module SFP ho\u1eb7c c\u1ed5ng<\/p><\/li>\n\n\n\n<li><p><strong>Th\u1eed nghi\u1ec7m v\u1edbi m\u1ed9t module \u0111\u00e3 bi\u1ebft l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 c\u1ed1 ph\u1ea7n c\u1ee9ng<\/p><\/li>\n\n\n\n<li><p><strong>Gi\u00e1m s\u00e1t nh\u1eadt k\u00fd m\u1ea1ng<\/strong> nh\u1eb1m ph\u00e1t hi\u1ec7n c\u00e1c l\u1ea7n m\u1ea5t k\u1ebft n\u1ed1i l\u1eb7p \u0111i l\u1eb7p l\u1ea1i ho\u1eb7c l\u1ed7i<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c b\u01b0\u1edbc n\u00e0y, h\u1ea7u h\u1ebft c\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn giao di\u1ec7n SFP\u2014nh\u01b0 v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch, sai l\u1ec7ch t\u1ed1c \u0111\u1ed9 ho\u1eb7c sai l\u1ec7ch lo\u1ea1i c\u00e1p quang\u2014c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u1ea1ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2600\ufe0f K\u1ebft lu\u1eadn: C\u00e1ch ch\u1ecdn module giao di\u1ec7n SFP ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Selecting the right <strong>Module giao di\u1ec7n SFP<\/strong> l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i m\u1ea1ng \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao. Khi mua module SFP, qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng v\u00e0 ng\u01b0\u1eddi mua IT ph\u1ea3i c\u00e2n nh\u1eafc c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 lo\u1ea1i truy\u1ec1n d\u1eabn, y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t. Ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t gi\u00fap ng\u0103n ng\u1eeba gi\u00e1n \u0111o\u1ea1n m\u1ea1ng, gi\u1ea3m thi\u1ec3u vi\u1ec7c x\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng l\u00e2u d\u00e0i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/copper-sfp-vs-fiber-sfp\/\">SFP quang h\u1ecdc so v\u1edbi SFP \u0111\u1ed3ng<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c module SFP quang h\u1ecdc (s\u1ee3i quang) v\u00e0 module SFP \u0111\u1ed3ng (RJ45), h\u00e3y c\u00e2n nh\u1eafc c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/488475.htm\" target=\"_self\"><strong>Module SFP quang h\u1ecdc<\/strong><\/a>: L\u00fd t\u01b0\u1edfng cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa, k\u1ebft n\u1ed1i uplink t\u1ed1c \u0111\u1ed9 cao v\u00e0 k\u1ebft n\u1ed1i backbone s\u1ee3i quang. Ch\u00fang h\u1ed7 tr\u1ee3 c\u1ea3 c\u00e1p quang \u0111\u01a1n mode v\u00e0 \u0111a mode, cho ph\u00e9p truy\u1ec1n d\u1eabn t\u1eeb h\u00e0ng tr\u0103m m\u00e9t \u0111\u1ebfn h\u00e0ng ch\u1ee5c kil\u00f4m\u00e9t.<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476812.htm\" target=\"_self\"><strong>M\u00f4-\u0111un SFP \u0111\u1ed3ng<\/strong><\/a>: Ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn (th\u01b0\u1eddng d\u01b0\u1edbi 100 m\u00e9t) s\u1eed d\u1ee5ng c\u00e1p \u0111\u1ed3ng Cat5e\/Cat6 hi\u1ec7n c\u00f3. Ch\u00fang mang l\u1ea1i kh\u1ea3 n\u0103ng tri\u1ec3n khai d\u1ec5 d\u00e0ng h\u01a1n v\u00e0 chi ph\u00ed th\u1ea5p h\u01a1n cho c\u00e1c k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch, t\u1ed1c \u0111\u1ed9 v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2n nh\u1eafc kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP kh\u00e1c nhau \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c kho\u1ea3ng c\u00e1ch kh\u00e1c nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Module c\u00e1p quang \u0111a mode (MMF)<\/strong>: 300\u2013550 m\u00e9t, d\u00f9ng cho c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn \u0111\u1ebfn trung b\u00ecnh trong t\u00f2a nh\u00e0 ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u.<\/p><\/li>\n\n\n\n<li><p><strong>Module c\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong>: v\u00e0i kil\u00f4m\u00e9t \u0111\u1ebfn h\u01a1n 40 km, d\u00f9ng cho c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c to\u00e0n khu\u00f4n vi\u00ean.<\/p><\/li>\n\n\n\n<li><p><strong>M\u00f4-\u0111un SFP \u0111\u1ed3ng<\/strong>: l\u00ean \u0111\u1ebfn 100 m\u00e9t, ph\u00f9 h\u1ee3p cho k\u1ebft n\u1ed1i trong v\u0103n ph\u00f2ng ho\u1eb7c \u1edf m\u1ee9c t\u1ee7 rack.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n lu\u00f4n ch\u1ecdn lo\u1ea1i module ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch k\u1ebft n\u1ed1i y\u00eau c\u1ea7u \u0111\u1ec3 tr\u00e1nh suy hao t\u00edn hi\u1ec7u ho\u1eb7c m\u1ea5t k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng th\u00edch nh\u00e0 s\u1ea3n xu\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c. M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb m\u1ea1ng ch\u1ec9 h\u1ed7 tr\u1ee3 module SFP \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi nh\u00e0 s\u1ea3n xu\u1ea5t g\u1ed1c (OEM), v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng module kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb nh\u1eadn di\u1ec7n<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c k\u1ebft n\u1ed1i ch\u1eadp ch\u1eddn<\/p><\/li>\n\n\n\n<li><p>Tr\u01b0\u1eddng h\u1ee3p m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb, b\u1ea3o h\u00e0nh ph\u1ea7n c\u1ee9ng c\u00f3 th\u1ec3 b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra b\u1ea3ng d\u1eef li\u1ec7u thi\u1ebft b\u1ecb \u0111\u1ec3 bi\u1ebft danh s\u00e1ch module SFP \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n\n\n\n<li><p>\u01afu ti\u00ean s\u1eed d\u1ee5ng c\u00e1c module \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/li>\n\n\n\n<li><p>C\u00e2n nh\u1eafc c\u00e1c module b\u00ean th\u1ee9 ba uy t\u00edn c\u00f3 li\u1ec7t k\u00ea r\u00f5 r\u00e0ng t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch c\u00e2n nh\u1eafc c\u1ea9n th\u1eadn lo\u1ea1i m\u00f4-\u0111un, kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 cung c\u1ea5p, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn m\u00f4-\u0111un giao di\u1ec7n SFP ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi y\u00eau c\u1ea7u m\u1ea1ng c\u1ee7a m\u00ecnh, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong d\u00e0i h\u1ea1n.<\/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\/c1269d0cd29a4df195c8d1340b378d74.jpg\" alt=\"How to Choose the Right SFP Interface Module\" class=\"wp-image-3041\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1269d0cd29a4df195c8d1340b378d74.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1269d0cd29a4df195c8d1340b378d74-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1269d0cd29a4df195c8d1340b378d74-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1269d0cd29a4df195c8d1340b378d74-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c1269d0cd29a4df195c8d1340b378d74-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 c\u00e1c m\u00f4-\u0111un SFP ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e1ng tin c\u1eady v\u00e0 <strong>t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 cung c\u1ea5p<\/strong>, h\u00e3y truy c\u1eadp trang <a target=\"\" rel=\"\" href=\"https:\/\/www.l-p.com\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>. T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3 duy\u1ec7t qua m\u1ed9t lo\u1ea1t gi\u1ea3i ph\u00e1p SFP quang h\u1ecdc v\u00e0 \u0111\u1ed3ng d\u00e2y \u0111\u1ed3ng phong ph\u00fa, ho\u00e0n to\u00e0n t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng vi\u1ec5n th\u00f4ng, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<div class=\"alignnone qc-cover-wrapper has-custom-content-position is-position-center\" elementtype=\"div\" useimagebackground=\"false\" imgbg=\"\" imgbgpositionleft=\"50\" imgbgpositiontop=\"50\" overlay=\"#165DFF\" overlayopacity=\"0.8\" contentposition=\"center\" alt=\"\" parallax=\"false\" style=\"border-radius: 12px; padding-left: var(--qc-preset--spacing--60); padding-right: var(--qc-preset--spacing--60); padding-top: var(--qc-preset--spacing--60); padding-bottom: var(--qc-preset--spacing--60); background-color: rgb(22, 93, 255); height: auto;\"><div class=\"qc-cover-wrapper__inner-container\"><div style=\"flex-wrap: wrap; justify-content: center; display: flex;\"><div colmd=\"10\" class=\"col col-md-10\"><p style=\"text-align: center;\"><span class=\"qc-h1-tag\" style=\"color: var(--qc-color1);\">t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 cung c\u1ea5p<\/span><\/p><p style=\"text-align: center;\"><span class=\"qc-p1-tag\" style=\"color: rgb(255, 255, 255);\">Ch\u1ecdn m\u00f4-\u0111un giao di\u1ec7n SFP ph\u00f9 h\u1ee3p<\/span><\/p><div class=\"qc-buttons-wrapper\"><div justification=\"center\" class=\"qc-buttons-container is-horizontal is-content-justification-center\" style=\"margin-top: var(--qc-preset--spacing--0); margin-bottom: var(--qc-preset--spacing--0); gap: var(--qc-preset--spacing--40);\"><div link=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\" opennewtab=\"false\" width=\"\" outline=\"false\" class=\"qc-button-wrapper\" style=\"background-color: rgb(248, 249, 250);\"><a class=\"qc-button-container\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\" target=\"_self\"><span style=\"color: rgb(3, 3, 3);\"><strong>M\u00f4-\u0111un SFP <\/strong><\/span><span style=\"color: rgb(3, 3, 3);\"><strong>B\u1ed9 s\u01b0u t\u1eadp<\/strong><\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<script>const link1 = document.createElement('link');link1.rel = 'stylesheet';link1.type = 'text\/css';link1.href = 'https:\/\/statics.quickcreator.io\/static\/theme\/css\/qcb-theme-additional.css';const link2 = document.createElement('link');link2.rel = 'stylesheet';link2.type = 'text\/css';link2.href = 'https:\/\/statics.quickcreator.io\/static\/aaapycm22qmuab44\/theme\/css\/qcb-main-theme.css';document.head.appendChild(link1);document.head.appendChild(link2);<\/script>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u giao di\u1ec7n SFP l\u00e0 g\u00ec, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed5ng SFP v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa SFP v\u00e0 RJ45. H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 \u1ee9ng d\u1ee5ng, t\u01b0\u01a1ng th\u00edch v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 SFP.<\/p>","protected":false},"author":1,"featured_media":3042,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-3043","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3043","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=3043"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3043\/revisions"}],"predecessor-version":[{"id":10746,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3043\/revisions\/10746"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3042"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}