{"id":2823,"date":"2026-03-27T00:00:00","date_gmt":"2026-03-27T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/glc-sx-mmd-1000base-sx-sfp-transceiver-module-guide\/"},"modified":"2026-06-22T03:44:45","modified_gmt":"2026-06-22T03:44:45","slug":"glc-sx-mmd-1000base-sx-sfp-transceiver-module-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/glc-sx-mmd-1000base-sx-sfp-transceiver-module-guide","title":{"rendered":"M\u00f4-\u0111un chuy\u1ec3n \u0111\u1ed5i SFP GLC-SX-MMD 1000BASE-SX MMF 850nm DOM"},"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\/c0b75371f9174ff28ccec5a2c0913865-1024x536.jpg\" alt=\"GLC-SX-MMD 1000BASE-SX SFP Transceiver Module MMF 850nm DOM\" class=\"wp-image-2810\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b75371f9174ff28ccec5a2c0913865-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b75371f9174ff28ccec5a2c0913865-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b75371f9174ff28ccec5a2c0913865-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b75371f9174ff28ccec5a2c0913865-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c0b75371f9174ff28ccec5a2c0913865.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng Ethernet Gigabit hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t quang ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 hi\u1ec7u su\u1ea5t cao. <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477562.htm\">GLC-SX-MMD<\/a> M\u00f4-\u0111un thu ph\u00e1t quang SFP 1000BASE-SX l\u00e0 m\u1ed9t trong nh\u1eefng gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i nh\u1ea5t cho truy\u1ec1n th\u00f4ng s\u1ee3i quang kho\u1ea3ng c\u00e1ch ng\u1eafn, \u0111\u1eb7c bi\u1ec7t trong LAN doanh nghi\u1ec7p, m\u1ea1ng khu\u00f4n vi\u00ean v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, GLC-SX-MMD l\u00e0 m\u00f4-\u0111un t\u1ed1c \u0111\u1ed9 1 Gbps (kh\u00f4ng ph\u1ea3i 10 Gbps) <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) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean s\u1ee3i quang \u0111a mode (MMF) v\u1edbi b\u01b0\u1edbc s\u00f3ng 850 nm, h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn t\u1ed1i \u0111a l\u00ean \u0111\u1ebfn 550 m\u00e9t t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i s\u1ee3i (OM2\/OM3\/OM4). M\u00f4-\u0111un n\u00e0y c\u00f3 giao di\u1ec7n LC k\u00e9p, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p v\u00e0\u2014quan tr\u1ecdng nh\u1ea5t\u2014kh\u1ea3 n\u0103ng DOM (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1<\/a>), cho ph\u00e9p gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c hi\u1ec7u su\u1ea5t quang h\u1ecdc nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t ph\u00e1t\/nh\u1eadn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ec sao m\u00f4-\u0111un SFP 1000BASE-SX GLC-SX-MMD l\u1ea1i quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 c\u00e1c c\u00f4ng ngh\u1ec7 t\u1ed1c \u0111\u1ed9 10 Gbps tr\u1edf l\u00ean \u0111ang ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">Tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, c\u00e1c c\u1ed5ng SFP+ h\u1ed7 tr\u1ee3 t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi<\/a> nh\u01b0 GLC-SX-MMD v\u1eabn gi\u1eef vai tr\u00f2 thi\u1ebft y\u1ebfu nh\u1edd c\u00e1c \u01b0u \u0111i\u1ec3m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i<\/strong> t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb m\u1ea1ng c\u0169 v\u00e0 m\u1edbi<\/p><\/li>\n\n\n\n<li><p><strong>Chi ph\u00ed tri\u1ec3n khai th\u1ea5p h\u01a1n<\/strong> chi ph\u00ed th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c b\u1ed9 thu ph\u00e1t t\u1ed1c \u0111\u1ed9 cao h\u01a1n<\/p><\/li>\n\n\n\n<li><p><strong>B\u0103ng th\u00f4ng \u0111\u1ee7 d\u00f9ng<\/strong> cho nhi\u1ec1u \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p><strong>Hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn<\/strong> trong c\u00f9ng t\u1ee7 rack v\u00e0 t\u00f2a nh\u00e0<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia CNTT, m\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c l\u1edbn nh\u1ea5t l\u00e0 tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u1ed1n k\u00e9m\u2014v\u00ed d\u1ee5 nh\u01b0 nh\u1ea7m l\u1eabn gi\u1eefa SFP (1 Gbps) v\u00e0 SFP+ (10 Gbps), ho\u1eb7c ch\u1ecdn sai lo\u1ea1i s\u1ee3i quang (\u0111a mode so v\u1edbi \u0111\u01a1n mode). Ch\u00ednh t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, vi\u1ec7c hi\u1ec3u r\u00f5 GLC-SX-MMD tr\u1edf n\u00ean v\u00f4 c\u00f9ng quan tr\u1ecdng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u00e1p \u1ee9ng \u0111\u00fang nhu c\u1ea7u t\u00ecm ki\u1ebfm th\u1ef1c t\u1ebf c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi k\u1ef9 thu\u1eadt c\u0169ng nh\u01b0 mua s\u1eafm ph\u1ed5 bi\u1ebfn nh\u1ea5t, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>GLC-SX-MMD ch\u00ednh x\u00e1c l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng ra sao?<\/p><\/li>\n\n\n\n<li><p>N\u00f3 l\u00e0 1 Gbps hay 10 Gbps, v\u00e0 \u0111i\u1ec1u \u0111\u00f3 c\u00f3 \u00fd ngh\u0129a g\u00ec?<\/p><\/li>\n\n\n\n<li><p>N\u00f3 d\u00f9ng s\u1ee3i quang \u0111a mode hay \u0111\u01a1n mode, v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang?<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa GLC-SX-MMD v\u00e0 GLC-SX-MM l\u00e0 g\u00ec?<\/p><\/li>\n\n\n\n<li><p>So s\u00e1nh v\u1edbi <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-1g-sx-vs-sfp-1g-lx-multimode-vs-single-mode-network\/\" target=\"_blank\" rel=\"\">1000BASE-SX v\u00e0 1000BASE-LX<\/a> m\u00f4-\u0111un?<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n n\u00ean mua s\u1ea3n ph\u1ea9m g\u1ed1c Cisco hay c\u00e1c l\u1ef1a ch\u1ecdn t\u01b0\u01a1ng th\u00edch?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ebfn cu\u1ed1i b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 m\u1ed9t khung ra quy\u1ebft \u0111\u1ecbnh r\u00f5 r\u00e0ng \u0111\u1ec3 t\u1ef1 tin l\u1ef1a ch\u1ecdn m\u00f4-\u0111un SFP ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a m\u00ecnh\u2014\u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin nhanh: <\/strong>N\u1ebfu m\u1ea1ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u k\u1ebft n\u1ed1i s\u1ee3i quang 1G ng\u1eafn (\u2264550 m), hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed v\u00e0 t\u01b0\u01a1ng th\u00edch cao, GLC-SX-MMD th\u01b0\u1eddng l\u00e0 gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 GLC-SX-MMD l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD l\u00e0 m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478230.htm\">b\u1ed9 thu ph\u00e1t SFP 1000BASE-SX<\/a> m\u00f4-\u0111un \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho k\u1ebft n\u1ed1i Ethernet Gigabit (1 Gbps) tr\u00ean c\u00e1p s\u1ee3i quang \u0111a mode (MMF) s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 850 nm, v\u1edbi kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn t\u1ed1i \u0111a l\u00ean \u0111\u1ebfn 550 m\u00e9t. M\u00f4-\u0111un n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c switch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-nic-network-interface-card\/\">card giao di\u1ec7n m\u1ea1ng<\/a> cho truy\u1ec1n th\u00f4ng quang ng\u1eafn.<\/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\/f6c95607e82d40a7916afb76a42b184f.jpg\" alt=\" What Is GLC-SX-MMD?\" class=\"wp-image-2813\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6c95607e82d40a7916afb76a42b184f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6c95607e82d40a7916afb76a42b184f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6c95607e82d40a7916afb76a42b184f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6c95607e82d40a7916afb76a42b184f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6c95607e82d40a7916afb76a42b184f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f3m t\u1eaft k\u1ef9 thu\u1eadt nhanh<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Chu\u1ea9n:<\/strong> C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li>\n\n\n\n<li><p><strong>H\u00ecnh d\u1ea1ng (Form Factor):<br><\/strong> SFP (Small Form-Factor Pluggable)<\/p><\/li>\n\n\n\n<li><p><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u:<\/strong> 1 Gbps (Ethernet Gigabit)<\/p><\/li>\n\n\n\n<li><p><strong>Lo\u1ea1i c\u00e1p quang:<\/strong> C\u00e1p quang \u0111a mode (MMF)<\/p><\/li>\n\n\n\n<li><p><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> 850nm<\/p><\/li>\n\n\n\n<li><p><strong>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a:<\/strong> L\u00ean \u0111\u1ebfn 550 m (OM2\/OM3\/OM4)<\/p><\/li>\n\n\n\n<li><p><strong>\u0110\u1ea7u n\u1ed1i:<\/strong> \u0110\u1ea7u n\u1ed1i LC hai chi\u1ec1u (Duplex LC)<br><\/p><\/li>\n\n\n\n<li><p><strong>\u0110\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt:<br><\/strong> DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1)<br><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/are-sfp-modules-hot-swappable-safe-sfp-hot-swap-guide\/\" target=\"_blank\" rel=\"\"><strong>Ph\u1ea7n C\u1ee9ng C\u00f3 Th\u1ec3 Thay Th\u1ebf Khi \u0110ang Ho\u1ea1t \u0110\u1ed9ng (Hot-Swappable)<\/strong><\/a><strong>:<\/strong> C\u00f3<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u201cMMD\u201d ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1eef \u201cMMD\u201d trong GLC-SX-MMD \u0111\u1ea1i di\u1ec7n cho Gi\u00e1m s\u00e1t Quang K\u1ef9 thu\u1eadt s\u1ed1 (DOM), m\u1ed9t t\u00ednh n\u0103ng n\u00e2ng cao cung c\u1ea5p kh\u1ea3 n\u0103ng quan s\u00e1t th\u1eddi gian th\u1ef1c v\u1ec1 \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00f4-\u0111un.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi DOM, k\u1ef9 s\u01b0 m\u1ea1ng c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t quang ph\u00e1t<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t quang nh\u1eadn<\/p><\/li>\n\n\n\n<li><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/li>\n\n\n\n<li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>D\u00f2ng ph\u00e2n c\u1ef1c laser<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng n\u00e0y c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tin c\u1eady m\u1ea1ng, hi\u1ec7u qu\u1ea3 x\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u00e0 b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n, khi\u1ebfn GLC-SX-MMD tr\u1edf th\u00e0nh phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p c\u1ee7a c\u00e1c m\u00f4-\u0111un kh\u00f4ng h\u1ed7 tr\u1ee3 DOM tr\u01b0\u1edbc \u0111\u00e2y nh\u01b0 GLC-SX-MM.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1eb7c bi\u1ec7t cho c\u00e1c k\u1ebft n\u1ed1i s\u1ee3i quang ng\u1eafn v\u00e0 hi\u1ec7u qu\u1ea3 cao trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Trung t\u00e2m d\u1eef li\u1ec7u<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i t\u1eeb m\u00e1y ch\u1ee7 \u0111\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-tor-top-of-rack-switch\/\" target=\"_blank\" rel=\"\">Tr\u00ean c\u00f9ng m\u1ed9t rack<\/a> tri\u1ec3n khai (ToR)<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>M\u1ea1ng LAN doanh nghi\u1ec7p<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p>li\u00ean k\u1ebft s\u1ee3i quang gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 (kho\u1ea3ng c\u00e1ch ng\u1eafn)<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>M\u1ea1ng khu\u00f4n vi\u00ean<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>k\u1ebft n\u1ed1i l\u1edbp ph\u00e2n ph\u1ed1i<\/p><\/li>\n\n\n\n<li><p>switch t\u1ed5ng h\u1ee3p<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao GLC-SX-MMD 1000BASE-SX SFP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a GLC-SX-MMD b\u1eaft ngu\u1ed3n t\u1eeb s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 <strong>Hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/strong> (th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c b\u1ed9 quang t\u1ea7m xa)<\/p><\/li>\n\n\n\n<li><p>\u2705 <strong>T\u00ednh t\u01b0\u01a1ng th\u00edch cao<\/strong> (\u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i b\u1edfi c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng)<\/p><\/li>\n\n\n\n<li><p>\u2705 <strong>Hi\u1ec7u n\u0103ng \u0111\u1ea7y \u0111\u1ee7<\/strong> cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng 1G<\/p><\/li>\n\n\n\n<li><p>\u2705 <strong>Gi\u00e1m s\u00e1t n\u00e2ng cao (DOM)<\/strong> \u0111\u1ec3 ki\u1ec3m so\u00e1t m\u1ea1ng t\u1ed1t h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD l\u00e0 m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482144.htm\">M\u00f4-\u0111un SFP \u0111a mode 1G<\/a> (850 nm, l\u00ean \u0111\u1ebfn 550 m) c\u00f3 t\u00edch h\u1ee3p ch\u1ea9n \u0111o\u00e1n DOM, l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho m\u1ea1ng s\u1ee3i quang ng\u1eafn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a GLC-SX-MMD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 thu ph\u00e1t GLC-SX-MMD l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch, hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady m\u1ea1ng d\u00e0i h\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch r\u00f5 r\u00e0ng, th\u00e2n thi\u1ec7n v\u1edbi k\u1ef9 s\u01b0 v\u1ec1 c\u00e1c th\u00f4ng s\u1ed1 c\u1ed1t l\u00f5i c\u1ee7a n\u00f3.<\/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\/571b448cbd584e0eb964fb8523906013.jpg\" alt=\"GLC-SX-MMD Specifications and Key Features\" class=\"wp-image-2814\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/571b448cbd584e0eb964fb8523906013.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/571b448cbd584e0eb964fb8523906013-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/571b448cbd584e0eb964fb8523906013-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/571b448cbd584e0eb964fb8523906013-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/571b448cbd584e0eb964fb8523906013-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcca B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ea7y \u0111\u1ee7<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 282px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>H\u1ec7 s\u1ed1 d\u1ea1ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP (Small Form-Factor Pluggable)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>25Gbps<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1 Gbps (Ethernet Gigabit)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Ti\u00eau chu\u1ea9n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p quang \u0111a mode (MMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 550 m\u00e9t (OM2\/OM3\/OM4)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>\u0110\u1ea7u n\u1ed1i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea7u n\u1ed1i LC hai chi\u1ec1u (Duplex LC)<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Gi\u00e1m s\u00e1t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1)<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"282\"><p><strong>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Thi\u1ebft k\u1ebf ti\u1ebft ki\u1ec7m \u0111i\u1ec7n (th\u01b0\u1eddng &lt;1W)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udce1 DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1) \u2014 V\u00ec sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a GLC-SX-MMD l\u00e0 Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1 (DOM), cung c\u1ea5p ch\u1ea9n \u0111o\u00e1n th\u1eddi gian th\u1ef1c v\u1ec1 tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 thu ph\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1edbi DOM, b\u1ea1n c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t quang ph\u00e1t (Tx)<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t quang nh\u1eadn (Rx)<\/p><\/li>\n\n\n\n<li><p>Nhi\u1ec7t \u0111\u1ed9 module<\/p><\/li>\n\n\n\n<li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>D\u00f2ng ph\u00e2n c\u1ef1c laser<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u00e1 tr\u1ecb th\u1ef1c ti\u1ec5n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00e1t hi\u1ec7n suy gi\u1ea3m s\u1ee3i quang tr\u01b0\u1edbc khi x\u1ea3y ra s\u1ef1 c\u1ed1<\/p><\/li>\n\n\n\n<li><p>X\u1eed l\u00fd s\u1ef1 c\u1ed1 li\u00ean k\u1ebft nhanh h\u01a1n<\/p><\/li>\n\n\n\n<li><p>C\u1ea3i thi\u1ec7n th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c m\u1ea1ng y\u00eau c\u1ea7u \u0111\u1ed9 s\u1eb5n s\u00e0ng cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So v\u1edbi c\u00e1c module kh\u00f4ng h\u1ed7 tr\u1ee3 DOM, t\u00ednh n\u0103ng n\u00e0y mang l\u1ea1i m\u1ed9t l\u1edbp tr\u00ed tu\u1ec7 v\u00e0 kh\u1ea3 n\u0103ng d\u1ef1 b\u00e1o cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd0c Thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng (b\u1ea3o tr\u00ec kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD h\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng, ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 c\u1eafm ho\u1eb7c th\u00e1o module m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u1ee3i \u00edch:<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n m\u1ea1ng trong qu\u00e1 tr\u00ecnh thay th\u1ebf<\/p><\/li>\n\n\n\n<li><p>B\u1ea3o tr\u00ec v\u00e0 n\u00e2ng c\u1ea5p nhanh h\u01a1n<\/p><\/li>\n\n\n\n<li><p>L\u00fd t\u01b0\u1edfng cho trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh n\u0103ng n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c m\u1ea1ng y\u00eau c\u1ea7u \u0111\u1ed9 s\u1eb5n s\u00e0ng cao, n\u01a1i th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng l\u00e0 b\u1eaft bu\u1ed9c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u26a1 Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u n\u0103ng nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Module \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho <strong>m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n th\u1ea5p (th\u01b0\u1eddng d\u01b0\u1edbi 1 watt)<\/strong>, gi\u00fap v\u1eadn h\u00e0nh hi\u1ec7u qu\u1ea3 trong c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00fd do \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng t\u1ed5ng th\u1ec3<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3m thi\u1ec3u sinh nhi\u1ec7t b\u00ean trong switch<\/p><\/li>\n\n\n\n<li><p>K\u00e9o d\u00e0i tu\u1ed5i th\u1ecd ph\u1ea7n c\u1ee9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1eadt \u0111\u1ed9 cao nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<br><\/a>, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c module ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> nh\u01b0 GLC-SX-MMD gi\u00fap duy tr\u00ec \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u1ed5n \u0111\u1ecbnh v\u00e0 gi\u1ea3m nhu c\u1ea7u l\u00e0m m\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD k\u1ebft h\u1ee3p hi\u1ec7u n\u0103ng chu\u1ea9n 1G (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482145.htm\">C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/a>) c\u00f9ng c\u00e1c l\u1ee3i th\u1ebf v\u1eadn h\u00e0nh hi\u1ec7n \u0111\u1ea1i nh\u01b0 ch\u1ea9n \u0111o\u00e1n DOM, kh\u1ea3 n\u0103ng thay th\u1ebf n\u00f3ng v\u00e0 ti\u00eau th\u1ee5 \u0111i\u1ec7n th\u1ea5p\u2014t\u1eeb \u0111\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady v\u00e0 d\u1ec5 m\u1edf r\u1ed9ng cho c\u00e1c m\u1ea1ng s\u1ee3i quang kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 GLC-SX-MMD so v\u1edbi GLC-SX-MM \u2014 S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u1ea3 GLC-SX-MMD v\u00e0 GLC-SX-MM \u0111\u1ec1u l\u00e0 c\u00e1c m\u00f4-\u0111un SFP 1000BASE-SX \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n th\u00f4ng s\u1ee3i quang \u0111a mode (MMF) 1Gbps \u1edf b\u01b0\u1edbc s\u00f3ng 850nm, nh\u01b0ng c\u00f3 m\u1ed9t kh\u00e1c bi\u1ec7t quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t v\u00e0 b\u1ea3o tr\u00ec m\u1ea1ng:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">GLC-SX-MMD h\u1ed7 tr\u1ee3 DOM (Gi\u00e1m s\u00e1t Quang K\u1ef9 thu\u1eadt s\u1ed1), trong khi GLC-SX-MM th\u00ec kh\u00f4ng.<\/p>\n<\/blockquote>\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\/48ba56d138c6439e982f4906a9d2ee8c.jpg\" alt=\"GLC-SX-MMD vs. GLC-SX-MM \u2014 What\u2019s the Difference?\" class=\"wp-image-2815\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48ba56d138c6439e982f4906a9d2ee8c.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48ba56d138c6439e982f4906a9d2ee8c-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48ba56d138c6439e982f4906a9d2ee8c-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48ba56d138c6439e982f4906a9d2ee8c-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48ba56d138c6439e982f4906a9d2ee8c-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i \u2013 Nh\u00ecn t\u1ed5ng quan<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 225px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>GLC-SX-MM (Th\u1ebf h\u1ec7 c\u0169)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>GLC-SX-MMD (Th\u1ebf h\u1ec7 n\u00e2ng cao)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>Ti\u00eau chu\u1ea9n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>25Gbps<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MMF<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\"><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 550 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 550 m<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>H\u1ed7 tr\u1ee3 DOM<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c Kh\u00f4ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 C\u00f3<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>Kh\u1ea3 n\u0103ng ch\u1ea9n \u0111o\u00e1n v\u00e0 gi\u00e1m s\u00e1t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Basic<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>N\u00e2ng cao (c\u00e1c ch\u1ec9 s\u1ed1 th\u1eddi gian th\u1ef1c)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p><strong>Th\u1eddi k\u1ef3 tri\u1ec3n khai<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ebf h\u1ec7 c\u0169<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00f4-\u0111un c\u00f3 ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t so v\u1edbi m\u00f4-\u0111un kh\u00f4ng c\u00f3 ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea1n ch\u1ebf l\u1edbn nh\u1ea5t c\u1ee7a GLC-SX-MM l\u00e0 thi\u1ebfu kh\u1ea3 n\u0103ng quan s\u00e1t hi\u1ec7u su\u1ea5t quang h\u1ecdc th\u1eddi gian th\u1ef1c.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>GLC-SX-MM (kh\u00f4ng h\u1ed7 tr\u1ee3 DOM)<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng cung c\u1ea5p th\u00f4ng tin v\u1ec1 m\u1ee9c t\u00edn hi\u1ec7u quang<\/p><\/li>\n\n\n\n<li><p>Kh\u00f3 h\u01a1n trong vi\u1ec7c ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1 tr\u00ean c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>Ch\u1ec9 h\u1ed7 tr\u1ee3 b\u1ea3o tr\u00ec ph\u1ea3n \u1ee9ng (reactive maintenance)<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>GLC-SX-MMD (c\u00f3 h\u1ed7 tr\u1ee3 DOM)<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c c\u00f4ng su\u1ea5t ph\u00e1t (Tx) v\u00e0 thu (Rx)<\/p><\/li>\n\n\n\n<li><p>Ph\u00e1t hi\u1ec7n s\u1edbm suy gi\u1ea3m t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p b\u1ea3o tr\u00ec ch\u1ee7 \u0111\u1ed9ng (proactive maintenance)<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, thi\u1ebfu ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t = r\u1ee7i ro cao h\u01a1n v\u1ec1 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng b\u1ea5t ng\u1edd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao GLC-SX-MMD l\u00e0 phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1eef \u201cD\u201d<strong> <\/strong>trong GLC-SX-MMD vi\u1ebft t\u1eaft cho Digital Optical Monitoring, bi\u1ebfn n\u00f3 th\u00e0nh phi\u00ean b\u1ea3n th\u1ebf h\u1ec7 ti\u1ebfp theo thay th\u1ebf cho GLC-SX-MM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a MMD:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Minh b\u1ea1ch trong v\u1eadn h\u00e0nh (d\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t th\u1eddi gian th\u1ef1c)<\/p><\/li>\n\n\n\n<li><p>C\u00e1ch ly s\u1ef1 c\u1ed1 nhanh h\u01a1n<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3m th\u1eddi gian ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3m chi ph\u00ed b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd nh\u1eefng l\u1ee3i \u00edch n\u00e0y, ph\u1ea7n l\u1edbn nh\u00e0 cung c\u1ea5p v\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng hi\u1ec7n nay coi GLC-SX-MMD l\u00e0 ti\u00eau chu\u1ea9n m\u1eb7c \u0111\u1ecbnh cho c\u00e1c tri\u1ec3n khai SFP \u0111a mode 1G.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 GLC-SX-MMD l\u00e0 lo\u1ea1i \u0111\u01a1n mode hay \u0111a mode?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/1g-multimode-sfp-short-range-sx-fiber-guide\/\">c\u00e1p quang \u0111a mode<\/a> (MMF)\u2014kh\u00f4ng ph\u1ea3i s\u1ee3i quang \u0111\u01a1n mode (SMF). N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 850nm, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u \u0111\u1eb7c bi\u1ec7t cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch ng\u1eafn tr\u00ean c\u00e1p \u0111a mode.<\/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\/d56ce8e0d50a493493ce73337ca44b35.jpg\" alt=\"Is GLC-SX-MMD Single Mode or Multimode?\" class=\"wp-image-2816\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d56ce8e0d50a493493ce73337ca44b35.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d56ce8e0d50a493493ce73337ca44b35-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d56ce8e0d50a493493ce73337ca44b35-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d56ce8e0d50a493493ce73337ca44b35-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d56ce8e0d50a493493ce73337ca44b35-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i s\u1ee3i quang \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (OM2 \/ OM3 \/ OM4)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c c\u1ea5p \u0111\u1ed9 s\u1ee3i quang \u0111a mode ti\u00eau chu\u1ea9n th\u01b0\u1eddng d\u00f9ng trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>OM2 (m\u00e0u cam)<\/strong> \u2013 s\u1ee3i quang \u0111a mode th\u1ebf h\u1ec7 c\u0169<\/p><\/li>\n\n\n\n<li><p><strong>OM3 (m\u00e0u xanh n\u01b0\u1edbc bi\u1ec3n)<\/strong> \u2013 s\u1ee3i quang \u0111a mode t\u1ed1i \u01b0u cho laser (ph\u1ed5 bi\u1ebfn nh\u1ea5t)<\/p><\/li>\n\n\n\n<li><p><strong>OM4 (m\u00e0u xanh n\u01b0\u1edbc bi\u1ec3n\/t\u00edm)<\/strong> \u2013 s\u1ee3i quang \u0111a mode b\u0103ng th\u00f4ng cao h\u01a1n nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c lo\u1ea1i s\u1ee3i quang n\u00e0y kh\u00e1c nhau ch\u1ee7 y\u1ebfu v\u1ec1 dung l\u01b0\u1ee3ng b\u0103ng th\u00f4ng v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn t\u1ed1i \u0111a, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn thi\u1ebft k\u1ebf m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 kho\u1ea3ng c\u00e1ch theo c\u1ea5p \u0111\u1ed9 s\u1ee3i quang<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 138px;\"\/><col style=\"width: 157px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"138\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p><p>Supported Fiber Types and Maximum Distances<\/p><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a (GLC-SX-MMD)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"138\"><p><strong><p>Up to 275 m (900 ft)<\/p><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>50\/125 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn ~275 m\u00e9t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 th\u1ed1ng c\u0169<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"138\"><p><strong><p>Up to 550 m (1,800 ft)<\/p><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>50\/125 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn ~300\u2013550 m\u00e9t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng LAN<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"138\"><p><strong>OM4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"157\"><p>50\/125 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn ~400\u2013550+ m\u00e9t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c m\u1ea1ng hi\u1ec7u n\u0103ng cao<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng trong c\u00e1c m\u1ea1ng th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ch\u1ecdn sai lo\u1ea1i s\u1ee3i quang l\u00e0 m\u1ed9t trong nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t (v\u00e0 t\u1ed1n k\u00e9m nh\u1ea5t)<strong>s<\/strong> trong tri\u1ec3n khai s\u1ee3i quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c r\u1ee7i ro ch\u00ednh n\u1ebfu c\u1ea5u h\u00ecnh sai:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c S\u1eed d\u1ee5ng s\u1ee3i \u0111\u01a1n mode v\u1edbi <a href=\"https:\/\/www.l-p.com\/products\/482292.htm\" target=\"_self\">SX 850 nm<\/a> \u2192 li\u00ean k\u1ebft s\u1ebd th\u1ea5t b\u1ea1i<\/p><\/li>\n\n\n\n<li><p>\u274c V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch c\u1ee7a s\u1ee3i \u0111a mode \u2192 suy gi\u1ea3m t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>\u274c Tr\u1ed9n l\u1eabn c\u00e1c c\u1ea5p \u0111\u1ed9 s\u1ee3i quang \u2192 hi\u1ec7u su\u1ea5t kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u00f4ng tin th\u1ef1c ti\u1ec5n khi tri\u1ec3n khai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea1m vi ng\u1eafn (trong c\u00f9ng t\u1ee7 \/ ph\u00f2ng): <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-om3-vs-om4\/\" target=\"_blank\" rel=\"\">OM3 ho\u1eb7c OM4<\/a> + GLC-SX-MMD l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng<\/p><\/li>\n\n\n\n<li><p>T\u1eeb t\u00f2a nh\u00e0 n\u00e0y sang t\u00f2a nh\u00e0 kh\u00e1c (li\u00ean k\u1ebft khu\u00f4n vi\u00ean ng\u1eafn): OM3\/OM4 v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong ph\u1ea1m vi 550 m<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch d\u00e0i (&gt;550 m): B\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i chuy\u1ec3n sang 1000BASE-LX (s\u1ee3i \u0111\u01a1n mode)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udca1 M\u1eb9o chuy\u00ean gia<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ea1ng c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng c\u00e1p s\u1ee3i quang m\u00e0u xanh lam ng\u1ecdc (aqua), b\u1ea1n g\u1ea7n nh\u01b0 ch\u1eafc ch\u1eafn \u0111ang l\u00e0m vi\u1ec7c v\u1edbi s\u1ee3i \u0111a mode (OM3\/OM4)\u2014\u0111\u00e2y ch\u00ednh x\u00e1c l\u00e0 lo\u1ea1i s\u1ee3i m\u00e0 GLC-SX-MMD \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD l\u00e0 module SFP d\u00e0nh ri\u00eang cho s\u1ee3i \u0111a mode (MMF), h\u1ed7 tr\u1ee3 c\u00e1c lo\u1ea1i s\u1ee3i OM2, OM3 v\u00e0 OM4, v\u1edbi kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn 550 m\u00e9t. Vi\u1ec7c \u0111\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i s\u1ee3i quang l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u n\u0103ng cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 1000BASE-SX so v\u1edbi 1000BASE-LX \u2014 B\u1ea1n n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476091.htm\">C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/a> and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\">1000BASE-LX<\/a> l\u00e0 m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng nh\u1ea5t khi tri\u1ec3n khai m\u1ea1ng s\u1ee3i quang. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 Ethernet 1 Gbps, ch\u00fang kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 lo\u1ea1i s\u1ee3i quang, kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 chi ph\u00ed t\u1ed5ng th\u1ec3.<\/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\/710c5eda32574a6c9ed913e91b96bbf1.jpg\" alt=\"1000BASE-SX vs. 1000BASE-LX \u2014 Which One Should You Choose?\" class=\"wp-image-2817\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/710c5eda32574a6c9ed913e91b96bbf1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/710c5eda32574a6c9ed913e91b96bbf1-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/710c5eda32574a6c9ed913e91b96bbf1-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/710c5eda32574a6c9ed913e91b96bbf1-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/710c5eda32574a6c9ed913e91b96bbf1-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110a mode so v\u1edbi \u0111\u01a1n mode \u2014 Nh\u1eefng kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 198px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>1000BASE-SX (GLC-SX-MMD)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>1000BASE-LX<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110a mode (MMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n mode (SMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 550 m\u00e9t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ebfn 10 km<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>Chi ph\u00ed c\u00e1p<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>Chi ph\u00ed module<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"198\"><p><strong>K\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi ng\u1eafn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi xa<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch: 550 m so v\u1edbi 10 km<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>1000BASE-SX:<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1i \u01b0u h\u00f3a cho kho\u1ea3ng c\u00e1ch ng\u1eafn l\u00ean \u0111\u1ebfn 550 m<\/p><\/li>\n\n\n\n<li><p>L\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng trong t\u00f2a nh\u00e0 ho\u1eb7c khu\u00f4n vi\u00ean<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>1000BASE-LX:<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa l\u00ean \u0111\u1ebfn 10 km<\/p><\/li>\n\n\n\n<li><p>Ph\u00f9 h\u1ee3p cho m\u1ea1ng li\u00ean t\u00f2a nh\u00e0 ho\u1eb7c m\u1ea1ng \u0111\u00f4 th\u1ecb<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t: Kho\u1ea3ng c\u00e1ch l\u00e0 y\u1ebfu t\u1ed1 <em>quy\u1ebft \u0111\u1ecbnh ch\u00ednh<\/em>. N\u1ebfu li\u00ean k\u1ebft c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 550 m\u00e9t, SX s\u1ebd kh\u00f4ng c\u00f2n kh\u1ea3 thi.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 chi ph\u00ed (y\u1ebfu t\u1ed1 mua s\u1eafm then ch\u1ed1t)<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 215px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Y\u1ebfu t\u1ed1 chi ph\u00ed<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SX (MMF)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>LX (SMF)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>C\u00e1p s\u1ee3i quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed th\u1ea5p h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>B\u1ed9 thu ph\u00e1t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>R\u1ebb h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eaft h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>C\u00e0i \u0111\u1eb7t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ee9c t\u1ea1p h\u01a1n<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft ng\u01b0\u1eddi d\u00f9ng doanh nghi\u1ec7p, c\u00e1c gi\u1ea3i ph\u00e1p SX c\u00f3 th\u1ec3 gi\u1ea3m t\u1ed5ng chi ph\u00ed tri\u1ec3n khai t\u1eeb 30\u201370% so v\u1edbi LX.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><p>Deployment Scenarios<\/p><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Ch\u1ecdn 1000BASE-SX (GLC-SX-MMD) n\u1ebfu b\u1ea1n c\u1ea7n:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u (t\u1eeb k\u1ec7 n\u00e0y sang k\u1ec7 kh\u00e1c)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c switch trong c\u00f9ng m\u1ed9t t\u00f2a nh\u00e0<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft LAN khu\u00f4n vi\u00ean d\u01b0\u1edbi 550 m<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tri\u1ec3n khai nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Ch\u1ecdn 1000BASE-LX n\u1ebfu b\u1ea1n c\u1ea7n:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 \u1edf kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft s\u1ee3i quang \u0111\u00f4 th\u1ecb ho\u1eb7c WAN<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng t\u1ea7m xa chu\u1ea9n b\u1ecb cho t\u01b0\u01a1ng lai<\/p><\/li>\n\n\n\n<li><p>M\u00f4i tr\u01b0\u1eddng s\u1ee3i quang \u0111\u01a1n mode<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khung ra quy\u1ebft \u0111\u1ecbnh th\u1ef1c ti\u1ec5n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u1ef1 h\u1ecfi ba c\u00e2u h\u1ecfi sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p><strong>Kho\u1ea3ng c\u00e1ch l\u00e0 bao nhi\u00eau?<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>\u2264 550 m \u2192 SX<\/p><\/li>\n\n\n\n<li><p>Tr\u00ean 550 m \u2192 LX<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>B\u1ea1n \u0111\u00e3 c\u00f3 lo\u1ea1i s\u1ee3i quang n\u00e0o?<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i \u0111a mode (MMF) \u2192 SX<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i \u0111\u01a1n mode (SMF) \u2192 LX<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>Ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>H\u1ea1n ch\u1ebf \u2192 SX<\/p><\/li>\n\n\n\n<li><p>Linh ho\u1ea1t \u2192 LX<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khuy\u1ebfn ngh\u1ecb t\u1eeb chuy\u00ean gia<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">1000BASE-SX (GLC-SX-MMD) l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean nh\u1edd chi ph\u00ed th\u1ea5p h\u01a1n, ph\u1ea1m vi \u0111\u1ee7 d\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 s\u1eed d\u1ee5ng 1000BASE-LX khi y\u00eau c\u1ea7u v\u1ec1 kho\u1ea3ng c\u00e1ch b\u1eaft bu\u1ed9c ph\u1ea3i nh\u01b0 v\u1eady.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SX = Kho\u1ea3ng c\u00e1ch ng\u1eafn, chi ph\u00ed th\u1ea5p, \u0111a mode<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>LX = Kho\u1ea3ng c\u00e1ch d\u00e0i, chi ph\u00ed cao h\u01a1n, \u0111\u01a1n mode<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u, hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 T\u01b0\u01a1ng th\u00edch \u2014 GLC-SX-MMD c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c v\u1edbi thi\u1ebft b\u1ecb Cisco c\u1ee7a b\u1ea1n kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi quan tr\u1ecdng nh\u1ea5t tr\u01b0\u1edbc khi mua b\u1ea5t k\u1ef3 m\u00f4-\u0111un SFP n\u00e0o l\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch. GLC-SX-MMD ban \u0111\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho c\u00e1c switch v\u00e0 router Cisco, nh\u01b0ng trong tri\u1ec3n khai th\u1ef1c t\u1ebf, t\u00ednh t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 c\u1ee7a thi\u1ebft b\u1ecb, ch\u00ednh s\u00e1ch firmware v\u00e0 m\u00e3 h\u00f3a m\u00f4-\u0111un.<\/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\/6685f56c3e9844fc8d2d45c258ca1c8b.jpg\" alt=\"Compatibility \u2014 Will GLC-SX-MMD Work with Your Cisco Device?\" class=\"wp-image-2818\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6685f56c3e9844fc8d2d45c258ca1c8b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6685f56c3e9844fc8d2d45c258ca1c8b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6685f56c3e9844fc8d2d45c258ca1c8b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6685f56c3e9844fc8d2d45c258ca1c8b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6685f56c3e9844fc8d2d45c258ca1c8b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng th\u00edch v\u1edbi switch &amp; router Cisco<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GLC-SX-MMD \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng Cisco, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c switch d\u00f2ng Catalyst (v\u00ed d\u1ee5: l\u1edbp truy c\u1eadp v\u00e0 ph\u00e2n ph\u1ed1i)<\/p><\/li>\n\n\n\n<li><p>C\u00e1c switch d\u00f2ng Nexus (m\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u)<\/p><\/li>\n\n\n\n<li><p>C\u00e1c router Cisco c\u00f3 c\u1ed5ng SFP<\/p><\/li>\n\n\n\n<li><p>C\u00e1c th\u1ebb giao di\u1ec7n m\u1ea1ng (NIC) h\u1ed7 tr\u1ee3 SFP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, n\u1ebfu thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478232.htm\">SFP 1G<\/a> (1000BASE-SX), th\u00ec n\u00f3 s\u1ebd h\u1ed7 tr\u1ee3 GLC-SX-MMD.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 m\u00e3 h\u00f3a &amp; firmware<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb Cisco th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u00e3 h\u00f3a \u0111\u1eb7c th\u00f9 theo nh\u00e0 s\u1ea3n xu\u1ea5t (l\u1eadp tr\u00ecnh EEPROM) \u0111\u1ec3 nh\u1eadn d\u1ea1ng v\u00e0 x\u00e1c th\u1ef1c b\u1ed9 thu ph\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n hi\u1ec3u r\u00f5:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un Cisco OEM \u2192 Lu\u00f4n \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n v\u00e0 h\u1ed7 tr\u1ee3<\/p><\/li>\n\n\n\n<li><p>C\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch (b\u00ean th\u1ee9 ba) \u2192 Ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u00fang c\u00e1ch cho Cisco<\/p><\/li>\n\n\n\n<li><p>H\u1ea1n ch\u1ebf\u56fa\u4ef6 \u2192 M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ch\u1eb7n c\u00e1c m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ea5n \u0111\u1ec1 v\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cL\u1ed7i \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>C\u1ed5ng b\u1ecb t\u1eaft ho\u1eb7c ch\u1ee9c n\u0103ng b\u1ecb gi\u1edbi h\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">R\u1ee7i ro v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch b\u00ean th\u1ee9 ba<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng m\u00f4-\u0111un b\u00ean th\u1ee9 ba ho\u1eb7c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482147.htm\">t\u01b0\u01a1ng th\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a theo nh\u00e0 cung c\u1ea5p<\/a> c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed \u0111\u00e1ng k\u1ec3\u2014nh\u01b0ng \u0111i k\u00e8m r\u1ee7i ro ti\u1ec1m \u1ea9n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c cung c\u1ea5p \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c r\u1ee7i ro ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><span>\u274c Kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c m\u1eabu switch c\u1ee5 th\u1ec3<\/span><\/p><\/li>\n\n\n\n<li><p><span>\u274c Firmware ch\u1eb7n sau khi c\u1eadp nh\u1eadt<\/span><\/p><\/li>\n\n\n\n<li><p><span>\u274c \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a DOM kh\u00f4ng \u0111\u1ea3m b\u1ea3o<\/span><\/p><\/li>\n\n\n\n<li><p><span>\u274c Hi\u1ec7u su\u1ea5t li\u00ean k\u1ebft kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/span><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tuy nhi\u00ean, c\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 Ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch v\u1edbi thi\u1ebft b\u1ecb Cisco<\/p><\/li>\n\n\n\n<li><p>\u2705 \u0110\u1ea1t hi\u1ec7u su\u1ea5t gi\u1ed1ng h\u1ec7t nhau<\/p><\/li>\n\n\n\n<li><p>\u2705 Gi\u1ea3m chi ph\u00ed l\u00ean \u0111\u1ebfn 80\u201390%<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Ch\u00eca kh\u00f3a l\u00e0 ch\u1ecdn nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady c\u00f3 quy tr\u00ecnh ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch nghi\u00eam ng\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1ch x\u00e1c minh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch (t\u1eebng b\u01b0\u1edbc)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u1ed1n k\u00e9m, h\u00e3y l\u00e0m theo quy tr\u00ecnh x\u00e1c th\u1ef1c \u0111\u01a1n gi\u1ea3n sau:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Ki\u1ec3m tra th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn switch\/router c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>SFP (1G), KH\u00d4NG ph\u1ea3i ch\u1ec9 SFP+ (10G)<\/p><\/li>\n\n\n\n<li><p>Chu\u1ea9n 1000BASE-SX<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Xem l\u1ea1i danh s\u00e1ch t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Datasheet ch\u00ednh th\u1ee9c c\u1ee7a Cisco<\/p><\/li>\n\n\n\n<li><p>Ma tr\u1eadn t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p b\u00ean th\u1ee9 ba<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">X\u00e1c nh\u1eadn m\u00e3 h\u00f3a m\u00f4-\u0111un<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>\u201cT\u01b0\u01a1ng th\u00edch Cisco\u201d ho\u1eb7c \u201c\u0111\u01b0\u1ee3c m\u00e3 h\u00f3a cho Cisco\u201d<\/p><\/li>\n\n\n\n<li><p>\u0110\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u1edbi ch\u00ednh x\u00e1c m\u1eabu thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">X\u00e1c minh h\u00e0nh vi firmware<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb Cisco y\u00eau c\u1ea7u:<\/p>\n<ul class=\"wp-block-list\">\n<li><p><code>service unsupported-transceiver<\/code> (trong m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng nh\u1ea5t \u0111\u1ecbnh)<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>Lu\u00f4n x\u00e1c minh ch\u00ednh s\u00e1ch firmware tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u01b0\u1edbc khi tri\u1ec3n khai<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1eafm m\u00f4-\u0111un v\u00e0o m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi t\u1ea3i<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udca1 Nh\u1eadn x\u00e9t chuy\u00ean gia <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u201cho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c\u201d \u2014 m\u00e0 c\u00f2n l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh d\u00e0i h\u1ea1n<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea9n \u0111o\u00e1n ch\u00ednh x\u00e1c (DOM)<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ee7a firmware<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00f4-\u0111un gi\u00e1 th\u1ea5p nh\u01b0ng g\u1eb7p s\u1ef1 c\u1ed1 sau khi c\u1eadp nh\u1eadt firmware c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n th\u1ea5t l\u1edbn h\u01a1n nhi\u1ec1u do th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng so v\u1edbi kho\u1ea3n ti\u1ebft ki\u1ec7m ban \u0111\u1ea7u.<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>GLC-SX-MMD t\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i v\u1edbi thi\u1ebft b\u1ecb Cisco, nh\u01b0ng th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c m\u00e3 h\u00f3a \u0111\u00fang v\u00e0 \u0111\u1ed3ng b\u1ed9 firmware<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un OEM \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, trong khi m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch ch\u1ea5t l\u01b0\u1ee3ng cao mang l\u1ea1i ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u00e1ng k\u1ec3 n\u1ebfu \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c \u0111\u00fang c\u00e1ch<\/p><\/li>\n\n\n\n<li><p>Lu\u00f4n x\u00e1c minh tr\u01b0\u1edbc khi tri\u1ec3n khai \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00f4ng c\u00f3 r\u1ee7i ro<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 So s\u00e1nh m\u00f4-\u0111un GLC-SX-MMD OEM v\u00e0 m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ch\u1ecdn m\u00f4-\u0111un b\u1ed9 thu ph\u00e1t GLC-SX-MMD 1000BASE-SX SFP, m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh mua s\u1eafm quan tr\u1ecdng nh\u1ea5t l\u00e0 l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c m\u00f4-\u0111un OEM (c\u1ee7a Cisco g\u1ed1c) v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn t\u01b0\u01a1ng th\u00edch (b\u00ean th\u1ee9 ba). M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u c\u00f3 th\u1ec3 cung c\u1ea5p hi\u1ec7u su\u1ea5t quang h\u1ecdc 1 Gbps nh\u01b0 nhau, ch\u00fang kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 gi\u00e1 c\u1ea3, th\u01b0\u01a1ng hi\u1ec7u, m\u00e3 h\u00f3a ph\u1ea7n m\u1ec1m\u56fa\u4ef6 v\u00e0 t\u00ednh linh ho\u1ea1t d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/oem-sfp-modules-guide-compatibility\/\" target=\"_blank\" rel=\"\">OEM<\/a> (Nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c):<br>M\u00f4-\u0111un GLC-SX-MMD mang nh\u00e3n hi\u1ec7u Cisco g\u1ed1c, do Cisco s\u1ea3n xu\u1ea5t ho\u1eb7c ch\u1ee9ng nh\u1eadn.<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch:<br>A <a href=\"https:\/\/www.l-p.com\/products\/482247.htm\" target=\"_self\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a> M\u00f4-\u0111un \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a Cisco, th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gi\u1ed1ng Cisco nh\u1eb1m \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb nh\u1eadn di\u1ec7n v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7.<\/p><\/li>\n<\/ul>\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\/148c94a43a764e779e7abd460c32030b.jpg\" alt=\"OEM vs. Compatible GLC-SX-MMD Modules Comparison\" class=\"wp-image-2819\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/148c94a43a764e779e7abd460c32030b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/148c94a43a764e779e7abd460c32030b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/148c94a43a764e779e7abd460c32030b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/148c94a43a764e779e7abd460c32030b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/148c94a43a764e779e7abd460c32030b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">So s\u00e1nh song song<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 210px;\"\/><col style=\"width: 246px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>M\u00f4-\u0111un GLC-SX-MMD OEM Cisco<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4-\u0111un GLC-SX-MMD t\u01b0\u01a1ng th\u00edch<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>Th\u01b0\u01a1ng hi\u1ec7u<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>Cisco<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u00ean th\u1ee9 ba (v\u00ed d\u1ee5: LINK-PP, FS, v.v.)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>Hi\u1ec7u su\u1ea5t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>Gi\u1ed1ng h\u1ec7t nhau (1 Gbps, 850 nm, MMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1ed1ng h\u1ec7t nhau (n\u1ebfu ch\u1ea5t l\u01b0\u1ee3ng cao)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>H\u1ed7 tr\u1ee3 DOM<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 (n\u1ebfu \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>Device Recognition<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>M\u00e3 g\u1ed1c 100%<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 y\u00eau c\u1ea7u m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>Gi\u00e1 c\u1ea3<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>Cao (ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh t\u1eeb $100 \u0111\u1ebfn h\u01a1n $300)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p (ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh t\u1eeb $6 \u0111\u1ebfn $40)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>R\u1ee7i ro ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>Kh\u00f4ng c\u00f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 x\u1ea3y ra tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng Cisco h\u1ea1n ch\u1ebf<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>H\u1ed7 tr\u1ee3 b\u1ea3o h\u00e0nh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>B\u1ea3o h\u00e0nh ch\u00ednh th\u1ee9c c\u1ee7a Cisco<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ea3o h\u00e0nh ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"210\"><p><strong>Kh\u1ea3 n\u0103ng cung \u1ee9ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"246\"><p>Chu\u1ed7i cung \u1ee9ng h\u1ea1n ch\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u00eanh l\u1ec7ch chi ph\u00ed (y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh ch\u00ednh)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng l\u00fd do l\u1edbn nh\u1ea5t khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch l\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un GLC-SX-MMD OEM Cisco<strong>:<\/strong> Gi\u00e1 cao v\u01b0\u1ee3t tr\u1ed9i<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch: Gi\u1ea3m chi ph\u00ed l\u00ean \u0111\u1ebfn 70\u201390%<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Trong c\u00e1c tri\u1ec3n khai quy m\u00f4 l\u1edbn (trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c m\u1ea1ng doanh nghi\u1ec7p), ch\u00eanh l\u1ec7ch chi ph\u00ed n\u00e0y c\u00f3 th\u1ec3 chuy\u1ec3n th\u00e0nh h\u00e0ng ngh\u00ecn \u0111\u00f4 la ti\u1ebft ki\u1ec7m cho m\u1ed7i d\u1ef1 \u00e1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch ho\u1ea1t \u0111\u1ed9ng k\u00e9m h\u01a1n\u2014nh\u01b0ng \u0111i\u1ec1u n\u00e0y kh\u00f4ng nh\u1ea5t thi\u1ebft \u0111\u00fang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khi ch\u1ea5t l\u01b0\u1ee3ng cao:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f9ng th\u00e0nh ph\u1ea7n quang h\u1ecdc<\/p><\/li>\n\n\n\n<li><p>C\u00f9ng th\u00f4ng s\u1ed1 laser 850 nm<\/p><\/li>\n\n\n\n<li><p>C\u00f9ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u 1 Gbps<\/p><\/li>\n\n\n\n<li><p>C\u00f9ng kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t DOM<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1ef1 kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1 n\u1eb1m \u1edf:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u01b0\u01a1ng hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>M\u00e3 h\u00f3a ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/p><\/li>\n\n\n\n<li><p>T\u00ednh nh\u1ea5t qu\u00e1n trong ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (thay \u0111\u1ed5i theo nh\u00e0 cung c\u1ea5p)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u26a0\ufe0f R\u1ee7i ro c\u1ee7a m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 ti\u1ebft ki\u1ec7m chi ph\u00ed, m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 g\u00e2y r\u1ee7i ro n\u1ebfu s\u1ea3n xu\u1ea5t k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft b\u1ecb Cisco t\u1eeb ch\u1ed1i (\u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d)<\/p><\/li>\n\n\n\n<li><p>Ch\u1ec9 s\u1ed1 DOM kh\u00f4ng ch\u00ednh x\u00e1c<\/p><\/li>\n\n\n\n<li><p>Ch\u1eb7n c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m\u56fa\u4ef6<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng r\u1ee7i ro n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u1eb7c t\u00ednh v\u1ed1n c\u00f3 c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o b\u1ea1n n\u00ean ch\u1ecdn t\u1eebng lo\u1ea1i?<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Ch\u1ecdn m\u00f4-\u0111un SFP OEM Cisco GLC-SX-MMD n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 t\u1eeb Cisco \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o 100% (100%)<\/p><\/li>\n\n\n\n<li><p>M\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n mang t\u00ednh s\u1ed1ng c\u00f2n (t\u00e0i ch\u00ednh, vi\u1ec5n th\u00f4ng, ch\u00ednh ph\u1ee7)<\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Ch\u1ecdn m\u00f4-\u0111un SFP t\u01b0\u01a1ng th\u00edch GLC-SX-MMD n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n mu\u1ed1n t\u1ed1i \u01b0u chi ph\u00ed \u1edf quy m\u00f4 l\u1edbn<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n \u0111ang tri\u1ec3n khai m\u1ea1ng quy m\u00f4 l\u1edbn (trung t\u00e2m d\u1eef li\u1ec7u, khu\u00f4n vi\u00ean tr\u01b0\u1eddng\/campus)<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng v\u00e0 c\u00f3 m\u00e3 h\u00f3a t\u01b0\u01a1ng th\u00edch v\u1edbi Cisco<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udca1 Nh\u1eadn x\u00e9t chuy\u00ean gia <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c tri\u1ec3n khai doanh nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, xu h\u01b0\u1edbng \u0111ang chuy\u1ec3n d\u1ea7n sang:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh + ki\u1ec3m tra nghi\u00eam ng\u1eb7t = hi\u1ec7u n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Mi\u1ec5n l\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh, nhi\u1ec1u t\u1ed5 ch\u1ee9c hi\u1ec7n nay \u00e1p d\u1ee5ng m\u00f4-\u0111un GLC-SX-MMD t\u01b0\u01a1ng th\u00edch nh\u01b0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c mua s\u1eafm ti\u00eau chu\u1ea9n, \u0111\u1eb7c bi\u1ec7t cho c\u00e1c l\u1edbp h\u1ea1 t\u1ea7ng kh\u00f4ng mang t\u00ednh s\u1ed1ng c\u00f2n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>OEM = \u0111\u1ea3m b\u1ea3o t\u1ed1i \u0111a, chi ph\u00ed cao nh\u1ea5t<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch = ti\u1ec1m n\u0103ng hi\u1ec7u n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, chi ph\u00ed th\u1ea5p h\u01a1n nhi\u1ec1u<\/p><\/li>\n\n\n\n<li><p>Y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ec7u n\u0103ng \u2014 m\u00e0 l\u00e0 m\u1ee9c \u0111\u1ed9 tin t\u01b0\u1edfng v\u00e0o nh\u00e0 cung c\u1ea5p v\u00e0 quy tr\u00ecnh x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p \u2014 M\u00f4-\u0111un b\u1ed9 thu ph\u00e1t SFP GLC-SX-MMD 1000BASE-SX<\/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\/2eb6c7909cc04e85bc8cad0f67d08e60.jpg\" alt=\"GLC-SX-MMD 1000BASE-SX SFP Transceiver Module FAQ \" class=\"wp-image-2820\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2eb6c7909cc04e85bc8cad0f67d08e60.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2eb6c7909cc04e85bc8cad0f67d08e60-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2eb6c7909cc04e85bc8cad0f67d08e60-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2eb6c7909cc04e85bc8cad0f67d08e60-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2eb6c7909cc04e85bc8cad0f67d08e60-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 M\u00f4-\u0111un GLC-SX-MMD c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng chung v\u1edbi c\u00e1c m\u00f4-\u0111un SFP kh\u00f4ng h\u1ed7 tr\u1ee3 DOM trong c\u00f9ng m\u1ed9t m\u1ea1ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. M\u00f4-\u0111un GLC-SX-MMD c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong c\u00f9ng m\u1ed9t m\u1ea1ng v\u1edbi c\u00e1c m\u00f4-\u0111un kh\u00f4ng h\u1ed7 tr\u1ee3 DOM, mi\u1ec5n l\u00e0 c\u1ea3 hai \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u1ec1u h\u1ed7 tr\u1ee3 chu\u1ea9n 1000BASE-SX tr\u00ean c\u00e1p quang \u0111a mode (MMF). Tuy nhi\u00ean, ch\u1ec9 ph\u00eda MMD m\u1edbi cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t kh\u00f4ng \u0111\u1ed1i x\u1ee9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 M\u00f4-\u0111un GLC-SX-MMD c\u00f3 y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh \u0111\u1eb7c bi\u1ec7t sau khi l\u1eafp \u0111\u1eb7t kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng. M\u00f4-\u0111un \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng \u201cc\u1eafm l\u00e0 ch\u1ea1y\u201d (hot-swappable). Ngay sau khi g\u1eafn v\u00e0o c\u1ed5ng t\u01b0\u01a1ng th\u00edch, thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 \u0111\u1ed9ng nh\u1eadn di\u1ec7n v\u00e0 k\u00edch ho\u1ea1t k\u1ebft n\u1ed1i \u2014 mi\u1ec5n l\u00e0 lo\u1ea1i c\u00e1p quang v\u00e0 thi\u1ebft l\u1eadp t\u1ed1c \u0111\u1ed9 l\u00e0 \u0111\u00fang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu t\u00f4i s\u1eed d\u1ee5ng sai c\u00e1p n\u1ed1i quang v\u1edbi m\u00f4-\u0111un GLC-SX-MMD?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu v\u00f4 t\u00ecnh s\u1eed d\u1ee5ng c\u00e1p quang \u0111\u01a1n mode (SMF) thay v\u00ec c\u00e1p quang \u0111a mode (MMF):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i c\u00f3 th\u1ec3 kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao t\u00edn hi\u1ec7u s\u1ebd x\u1ea3y ra ngay l\u1eadp t\u1ee9c ho\u1eb7c ng\u1eaft qu\u00e3ng<\/p><\/li>\n\n\n\n<li><p>M\u1ee9c c\u00f4ng su\u1ea5t quang s\u1ebd kh\u00f4ng ch\u00ednh x\u00e1c (c\u1ea3nh b\u00e1o DOM n\u1ebfu \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch \u1edf t\u1ea7ng v\u1eadt l\u00fd v\u00e0 kh\u00f4ng th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng ph\u1ea7n m\u1ec1m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 GLC-SX-MMD c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c tr\u00ean c\u00e1c switch kh\u00f4ng ph\u1ea3i c\u1ee7a Cisco kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, n\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng ph\u1ea3i Cisco nh\u01b0ng h\u1ed7 tr\u1ee3 ti\u00eau chu\u1ea9n <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478233.htm\">m\u00f4-\u0111un SFP 1000BASE-SX<\/a>, tuy nhi\u00ean th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c nh\u00e0 s\u1ea3n xu\u1ea5t ch\u1ea5p nh\u1eadn m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-eeprom-powers-sfp-and-qsfp-optical-modules\/\" target=\"_blank\" rel=\"\">B\u1ed9 nh\u1edb EEPROM<\/a> t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c switch c\u00f3 \u00e1p d\u1ee5ng ch\u00ednh s\u00e1ch kh\u00f3a nh\u00e0 cung c\u1ea5p hay kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 n\u1ec1n t\u1ea3ng c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i m\u00f4-\u0111un ngay c\u1ea3 khi th\u00f4ng s\u1ed1 quang h\u1ecdc ho\u00e0n to\u00e0n gi\u1ed1ng nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 DOM c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng m\u1ea1ng ho\u1eb7c g\u00e2y \u0111\u1ed9 tr\u1ec5 kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1) l\u00e0 m\u1ed9t t\u00ednh n\u0103ng ch\u1ea9n \u0111o\u00e1n th\u1ee5 \u0111\u1ed9ng v\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 Tr\u1ec5<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t g\u00f3i tin<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec7u n\u0103ng b\u0103ng th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3 ch\u1ec9 cung c\u1ea5p d\u1eef li\u1ec7u gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c t\u1eeb b\u1ed9 thu ph\u00e1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 GLC-SX-MMD c\u00f3 ph\u00f9 h\u1ee3p cho m\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 cao kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u1edbp truy c\u1eadp 1G m\u1eadt \u0111\u1ed9 cao, \u0111\u1eb7c bi\u1ec7t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chuy\u1ec3n m\u1ea1ch \u0111\u1ea7u t\u1ee7 (ToR)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i m\u00e1y ch\u1ee7\u2013switch<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft t\u1ea7ng t\u1ed5ng h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nhu c\u1ea7u b\u0103ng th\u00f4ng cao h\u01a1n, c\u00e1c t\u1ed5 ch\u1ee9c th\u01b0\u1eddng n\u00e2ng c\u1ea5p l\u00ean 10G ho\u1eb7c 25G <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">SFP+<\/a> \/ <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28<\/a> hay \u0111\u01a1n mode (SMF).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 GLC-SX-MMD c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng sau khi ng\u1eebng ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. M\u00f4-\u0111un h\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng v\u00e0 c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng, mi\u1ec5n l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i v\u1ec1 m\u1eb7t v\u1eadt l\u00fd<\/p><\/li>\n\n\n\n<li><p>V\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n th\u00f4ng s\u1ed1 c\u00f4ng su\u1ea5t quang<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb \u0111\u00edch m\u1edbi<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u1eed l\u00fd \u0111\u00fang c\u00e1ch \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng tri\u1ec3n khai nhi\u1ec1u l\u1ea7n qua c\u00e1c \u0111\u1ee3t n\u00e2ng c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 Nguy\u00ean nh\u00e2n h\u1ecfng h\u00f3c \u0111i\u1ec3n h\u00ecnh c\u1ee7a m\u00f4-\u0111un GLC-SX-MMD trong th\u1ef1c t\u1ebf l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 trong th\u1ef1c t\u1ebf kh\u00f4ng do l\u1ed7i \u0111i\u1ec7n t\u1eed m\u00e0 do y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng ho\u1eb7c l\u1eafp \u0111\u1eb7t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i s\u1ee3i quang b\u1ecb b\u1ea9n ho\u1eb7c nhi\u1ec5m b\u1ea9n<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i s\u1ee3i quang kh\u00f4ng \u0111\u00fang (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\" target=\"_blank\" rel=\"\">SMF so v\u1edbi MMF<\/a>)<\/p><\/li>\n\n\n\n<li><p>B\u00e1n k\u00ednh u\u1ed1n c\u00e1p qu\u00e1 nh\u1ecf<\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch quang kh\u00f4ng ph\u00f9 h\u1ee3p trong c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c v\u1ec7 sinh s\u1ee3i quang \u0111\u00fang c\u00e1ch v\u00e0 ki\u1ec3m tra thi\u1ebft k\u1ebf k\u1ef9 l\u01b0\u1ee1ng gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 h\u1ecfng h\u00f3c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 K\u1ebft lu\u1eadn \u2014 C\u00e1ch ch\u1ecdn m\u00f4-\u0111un SFP 1000BASE-SX ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00f4-\u0111un SFP 1000BASE-SX ph\u00f9 h\u1ee3p (v\u00ed d\u1ee5 nh\u01b0 GLC-SX-MMD ho\u1eb7c c\u00e1c l\u1ef1a ch\u1ecdn t\u01b0\u01a1ng th\u00edch kh\u00e1c) kh\u00f4ng ch\u1ec9 nh\u1eb1m \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u01a1 b\u1ea3n v\u1ec1 k\u1ebft n\u1ed1i\u2014m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng, chi ph\u00ed b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng khi tri\u1ec3n khai. M\u1ed9t quy tr\u00ecnh l\u1ef1a ch\u1ecdn c\u00f3 c\u1ea5u tr\u00fac s\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00e1c m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u00f4-\u0111un GLC-SX-MMD \u0111\u00e1ng tin c\u1eady<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t c\u1ed1t l\u00f5i sau:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi mua, h\u00e3y x\u00e1c minh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi nh\u00e0 cung c\u1ea5p switch (Cisco, m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p, v.v.)<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 chu\u1ea9n 1000BASE-SX<\/p><\/li>\n\n\n\n<li><p>Y\u00eau c\u1ea7u v\u1ec1 DOM \/ kh\u00f4ng DOM<\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ed5ng ho\u1eb7c ch\u00ednh s\u00e1ch kh\u00f3a firmware<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Ki\u1ec3m tra hi\u1ec7u n\u0103ng<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t quang n\u1eb1m trong gi\u1edbi h\u1ea1n ng\u00e2n s\u00e1ch cho ph\u00e9p<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh tr\u00ean kho\u1ea3ng c\u00e1ch s\u1ee3i quang d\u1ef1 ki\u1ebfn (MMF OM2\/OM3\/OM4)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng m\u1ea5t g\u00f3i d\u01b0\u1edbi t\u1ea3i l\u01b0u l\u01b0\u1ee3ng li\u00ean t\u1ee5c<\/p><\/li>\n\n\n\n<li><p>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 khi s\u1eed d\u1ee5ng to\u00e0n b\u1ed9 c\u00f4ng su\u1ea5t c\u1ed5ng<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Chi\u1ebfn l\u01b0\u1ee3c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ef1a tr\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea5t l\u01b0\u1ee3ng m\u00e3 h\u00f3a EEPROM nh\u1ea5t qu\u00e1n<\/p><\/li>\n\n\n\n<li><p>B\u1ea3o h\u00e0nh v\u00e0 h\u1ed7 tr\u1ee3 thay th\u1ebf<\/p><\/li>\n\n\n\n<li><p>Tu\u00e2n th\u1ee7 \u0111\u1eb7c t\u1ea3 minh b\u1ea1ch (ti\u00eau chu\u1ea9n MSA)<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t \/ h\u1ecfng h\u00f3c<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c module SX 1G sinh nhi\u1ec7t th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c thi\u1ebft b\u1ecb quang t\u1ed1c \u0111\u1ed9 cao, r\u1ee7i ro h\u1ecfng h\u00f3c v\u1eabn t\u1ed3n t\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o lu\u1ed3ng kh\u00f4ng kh\u00ed th\u00edch h\u1ee3p trong c\u00e1c switch m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh s\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c module b\u00ean th\u1ee9 ba ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m trong c\u00f9ng m\u1ed9t khung m\u00e1y<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o c\u00e1c giao di\u1ec7n quang s\u1ea1ch \u0111\u1ec3 gi\u1ea3m suy hao t\u00edn hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Ki\u1ec3m tra tr\u01b0\u1edbc khi tri\u1ec3n khai<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Lu\u00f4n x\u00e1c th\u1ef1c c\u00e1c module trong m\u00f4i tr\u01b0\u1eddng ki\u1ec3m so\u00e1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra v\u00f2ng l\u1eb7p ho\u1eb7c s\u1ee3i quang kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea9n \u0111o\u00e1n giao di\u1ec7n ph\u00eda switch (\u0111\u1ecdc d\u1eef li\u1ec7u DOM n\u1ebfu c\u00f3 s\u1eb5n)<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra c\u0103ng th\u1eb3ng d\u01b0\u1edbi t\u1ea3i l\u01b0u l\u01b0\u1ee3ng \u0111\u1ec9nh<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau (n\u1ebfu \u00e1p d\u1ee5ng)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khung ra quy\u1ebft \u0111\u1ecbnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng khung th\u1ef1c ti\u1ec5n n\u00e0y khi l\u1ef1a ch\u1ecdn module c\u1ee7a b\u1ea1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Kho\u1ea3ng c\u00e1ch<\/strong> \u2192 Ph\u00f9 h\u1ee3p v\u1edbi gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch SR (th\u01b0\u1eddng l\u00ean t\u1edbi 550 m tr\u00ean OM4)<\/p><\/li>\n\n\n\n<li><p><strong><p>Switch model support list<\/p><\/strong> \u2192 \u0110\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a mode (OM2\/OM3\/OM4), tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u00f9ng s\u1ee3i \u0111\u01a1n mode (SMF)<\/p><\/li>\n\n\n\n<li><p><strong>Ng\u00e2n s\u00e1ch<\/strong> \u2192 C\u00e2n b\u1eb1ng t\u1ef7 l\u1ec7 chi ph\u00ed\u2013hi\u1ec7u n\u0103ng gi\u1eefa module ch\u00ednh h\u00e3ng v\u00e0 module t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\" target=\"_blank\" rel=\"\"><strong>T\u01b0\u01a1ng th\u00edch<\/strong><\/a> \u2192 X\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng ch\u1ea5p nh\u1eadn c\u1ee7a switch v\u00e0 h\u00e0nh vi m\u00e3 h\u00f3a EEPROM<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra gi\u1ea3m thi\u1ec3u r\u1ee7i ro<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 X\u00e1c nh\u1eadn lo\u1ea1i c\u00e1p MMF tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t<\/p><\/li>\n\n\n\n<li><p>\u2714 Tr\u00e1nh tr\u1ed9n l\u1eabn c\u00e1c nh\u00e0 cung c\u1ea5p ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m tra trong c\u00e1c li\u00ean k\u1ebft quan tr\u1ecdng<\/p><\/li>\n\n\n\n<li><p>\u2714 X\u00e1c th\u1ef1c d\u1eef li\u1ec7u DOM sau khi l\u1eafp \u0111\u1eb7t<\/p><\/li>\n\n\n\n<li><p>\u2714 Gi\u1eef \u0111\u1ea7u n\u1ed1i s\u1ee3i quang s\u1ea1ch v\u00e0 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7<\/p><\/li>\n\n\n\n<li><p>\u2714 Ghi ch\u00e9p v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t module \u0111\u1ec3 thu\u1eadn ti\u1ec7n cho vi\u1ec7c x\u1eed l\u00fd s\u1ef1 c\u1ed1<\/p><\/li>\n\n\n\n<li><p>\u2714 Th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u01b0\u1edbc tri\u1ec3n khai trong m\u00f4i tr\u01b0\u1eddng m\u00f4 ph\u1ecfng<\/p><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f-1024x576.jpg\" alt=\"Risk reduction checklist\" class=\"wp-image-2821\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f-18x10.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7230b654080c4a76be2cbea01538679f.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p SFP 1000BASE-SX \u1ed5n \u0111\u1ecbnh, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7, vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t nh\u1eb1m gi\u1ea3m thi\u1ec3u r\u1ee7i ro m\u1ea1ng d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1m ph\u00e1 c\u00e1c l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u1eeb <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>, n\u01a1i c\u00e1c module \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u01b0\u01a1ng t\u00e1c \u0111a nh\u00e0 cung c\u1ea5p, ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady khi tri\u1ec3n khai quy m\u00f4 l\u1edbn.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn ho\u00e0n ch\u1ec9nh v\u1ec1 module GLC-SX-MMD 1000BASE-SX SFP: th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, MMF so v\u1edbi SMF, t\u00ednh n\u0103ng DOM, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf t\u1ed1t nh\u1ea5t cho tri\u1ec3n khai ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>","protected":false},"author":1,"featured_media":2822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[15],"class_list":["post-2823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-link-pp-1g-sfp-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2823","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=2823"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2823\/revisions"}],"predecessor-version":[{"id":10725,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2823\/revisions\/10725"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2822"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}