{"id":2434,"date":"2026-04-14T00:00:00","date_gmt":"2026-04-14T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/1000base-lh-vs-1000base-lx-key-differences\/"},"modified":"2026-06-22T03:33:19","modified_gmt":"2026-06-22T03:33:19","slug":"1000base-lh-vs-1000base-lx-key-differences","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/1000base-lh-vs-1000base-lx-key-differences","title":{"rendered":"1000BASE-LH so v\u1edbi 1000BASE-LX: S\u1ef1 kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1 l\u00e0 g\u00ec?"},"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\/b5b392b42b36439cbb58cbc2cb8b94b8-1024x536.jpg\" alt=\"M\u00f4-\u0111un SFP 1000BASE-LX v\u00e0 1000BASE-LH\" class=\"wp-image-2420\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b5b392b42b36439cbb58cbc2cb8b94b8-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b5b392b42b36439cbb58cbc2cb8b94b8-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b5b392b42b36439cbb58cbc2cb8b94b8-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b5b392b42b36439cbb58cbc2cb8b94b8-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b5b392b42b36439cbb58cbc2cb8b94b8.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng c\u00e1p quang Gigabit Ethernet hi\u1ec7n \u0111\u1ea1i, m\u1ed9t trong nh\u1eefng \u0111i\u1ec3m th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn nh\u1ea5t l\u00e0 vi\u1ec7c so s\u00e1nh gi\u1eefa <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478919.htm\">1000BASE-LX<\/a> and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\">1000BASE-LH<\/a> M\u00f4-\u0111un SFP. Tho\u1ea1t nh\u00ecn, hai thu\u1eadt ng\u1eef n\u00e0y d\u01b0\u1eddng nh\u01b0 m\u00f4 t\u1ea3 hai c\u00f4ng ngh\u1ec7 kh\u00e1c nhau \u2014 nh\u01b0ng trong th\u1ef1c t\u1ebf tri\u1ec3n khai, c\u00e1c k\u1ef9 s\u01b0, ng\u01b0\u1eddi mua thi\u1ebft b\u1ecb CNTT v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf m\u1ea1ng th\u01b0\u1eddng nh\u1eadn ra r\u1eb1ng s\u1ef1 kh\u00e1c bi\u1ec7t ch\u1ee7 y\u1ebfu kh\u00f4ng n\u1eb1m \u1edf hi\u1ec7u su\u1ea5t quang h\u1ecdc, m\u00e0 ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean v\u00e0 thu\u1eadt ng\u1eef c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 1000BASE-LX v\u00e0 1000BASE-LH \u0111\u1ec1u c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi ti\u00eau chu\u1ea9n Gigabit Ethernet \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong IEEE 802.3z, ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh vi\u1ec7c truy\u1ec1n d\u1eabn Gigabit qua s\u1ee3i quang b\u1eb1ng b\u01b0\u1edbc s\u00f3ng 1310 nm. Trong h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng, c\u00e1c m\u00f4-\u0111un n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a>, h\u1ed7 tr\u1ee3 c\u1ea3 s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u00e0, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, s\u1ee3i quang \u0111a mode (MMF) th\u1ebf h\u1ec7 c\u0169 v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n tri\u1ec3n khai c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 nh\u1ea7m l\u1eabn n\u00e0y ch\u1ee7 y\u1ebfu xu\u1ea5t ph\u00e1t t\u1eeb vi\u1ec7c \u201cLX\u201d l\u00e0 thu\u1eadt ng\u1eef theo ti\u00eau chu\u1ea9n IEEE (Long Wavelength \u2013 B\u01b0\u1edbc s\u00f3ng d\u00e0i), trong khi \u201cLH\u201d l\u00e0 quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean ri\u00eang c\u1ee7a nh\u00e0 cung c\u1ea5p, th\u01b0\u1eddng \u0111\u01b0\u1ee3c Cisco s\u1eed d\u1ee5ng nh\u1ea5t \u0111\u1ec3 m\u00f4 t\u1ea3 \u201c<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/long-distance-transceiver-types-reach-selection-guide\/\">Chuy\u1ebfn bay \u0111\u01b0\u1eddng d\u00e0i<\/a>\u201d quang h\u1ecdc. M\u1eb7c d\u00f9 c\u00f3 c\u00e1ch \u0111\u1eb7t t\u00ean kh\u00e1c nhau, c\u1ea3 hai thu\u1eadt ng\u1eef n\u00e0y th\u01b0\u1eddng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc t\u01b0\u01a1ng t\u1ef1, bao g\u1ed3m c\u00f9ng d\u1ea3i b\u01b0\u1edbc s\u00f3ng v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn tr\u00f9ng l\u1eb7p trong c\u00e1c m\u00f4i tr\u01b0\u1eddng Gigabit Ethernet ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do s\u1ef1 tr\u00f9ng l\u1eb7p n\u00e0y, \u00fd \u0111\u1ecbnh t\u00ecm ki\u1ebfm xoay quanh ch\u1ee7 \u0111\u1ec1 \u201c1000BASE-LX so v\u1edbi 1000BASE-LH\u201d hi\u1ebfm khi li\u00ean quan \u0111\u1ebfn nh\u1eefng kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n v\u1ec1 c\u00f4ng ngh\u1ec7. Thay v\u00e0o \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng \u0111ang c\u1ed1 g\u1eafng t\u00ecm c\u00e2u tr\u1ea3 l\u1eddi cho nh\u1eefng c\u00e2u h\u1ecfi th\u1ef1c ti\u1ec5n nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un SFP LX v\u00e0 LH c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u1ea1i sao Cisco d\u00e1n nh\u00e3n m\u1ed9t s\u1ed1 b\u1ed9 quang l\u00e0 LX\/LH?<\/p><\/li>\n\n\n\n<li><p>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng LX\/LH tr\u00ean c\u1ea3 s\u1ee3i quang \u0111\u01a1n mode v\u00e0 \u0111a mode kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u00f4i c\u00f3 c\u1ea7n d\u00f9ng c\u00e1p n\u1ed1i \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch kh\u00f4ng?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft n\u00e0y s\u1ebd ph\u00e2n t\u00edch c\u00e1c c\u00e2u h\u1ecfi n\u00e0y m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng, t\u1eadp trung v\u00e0o kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt, gi\u00fap b\u1ea1n nhanh ch\u00f3ng n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t trong th\u1ef1c t\u1ebf, tr\u00e1nh nh\u1eefng sai l\u1ea7m v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477879.htm\">m\u00f4-\u0111un SFP<\/a> cho vi\u1ec7c tri\u1ec3n khai m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 1000BASE-LX v\u00e0 1000BASE-LH l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 hi\u1ec3u r\u00f5 s\u1ef1 so s\u00e1nh gi\u1eefa 1000BASE-LX v\u00e0 1000BASE-LH, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 tr\u01b0\u1edbc ti\u00ean ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 m\u1ed7i thu\u1eadt ng\u1eef n\u00e0y th\u1ef1c s\u1ef1 \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec1u g\u00ec trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng th\u1ef1c t\u1ebf. M\u1eb7c d\u00f9 ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 ri\u00eang bi\u1ec7t trong c\u00e1c truy v\u1ea5n t\u00ecm ki\u1ebfm, nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n quang h\u1ecdc kh\u00e1c bi\u1ec7t v\u1ec1 b\u1ea3n ch\u1ea5t trong h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/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\/38e1f9d89cde41828e8da7ae245a9965.jpg\" alt=\"1000BASE-LX v\u00e0 1000BASE-LH l\u00e0 g\u00ec?\" class=\"wp-image-2421\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38e1f9d89cde41828e8da7ae245a9965.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38e1f9d89cde41828e8da7ae245a9965-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38e1f9d89cde41828e8da7ae245a9965-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38e1f9d89cde41828e8da7ae245a9965-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38e1f9d89cde41828e8da7ae245a9965-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">1000BASE-LX l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1000BASE-LX l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n ch\u00ednh th\u1ee9c v\u1ec1 m\u1ea1ng Gigabit Ethernet qua c\u00e1p quang do IEEE quy \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n IEEE 802.3z. Ch\u1eef \u201cLX\u201d l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <em>B\u01b0\u1edbc s\u00f3ng d\u00e0i<\/em>, v\u00e0 ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh vi\u1ec7c s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng laser 1310 nm \u0111\u1ec3 truy\u1ec1n d\u1eabn Gigabit Ethernet qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\">h\u1ec7 th\u1ed1ng c\u00e1p quang<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong m\u1ea1ng, 1000BASE-LX \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c li\u00ean k\u1ebft s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF) c\u00f3 \u0111\u1ed9 d\u00e0i l\u00ean \u0111\u1ebfn kho\u1ea3ng 10 km<\/p><\/li>\n\n\n\n<li><p>C\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u1edf kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn kho\u1ea3ng 550 m trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 (th\u01b0\u1eddng y\u00eau c\u1ea7u \u0111i\u1ec1u ki\u1ec7n ph\u00e1t s\u00f3ng ph\u00f9 h\u1ee3p ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 trong c\u00e1c h\u1ec7 th\u1ed1ng c\u0169)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec \u0111\u00e2y l\u00e0 ti\u00eau chu\u1ea9n do IEEE quy \u0111\u1ecbnh, 1000BASE-LX \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i b\u1edfi c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau v\u00e0 \u0111\u01b0\u1ee3c coi l\u00e0 ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n cho k\u1ebft n\u1ed1i s\u1ee3i quang Gigabit trong c\u00e1c m\u1ea1ng doanh nghi\u1ec7p v\u00e0 m\u1ea1ng khu\u00f4n vi\u00ean.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1000BASE-LH l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1000BASE-LH<\/strong> kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n ch\u00ednh th\u1ee9c c\u1ee7a IEEE. Thay v\u00e0o \u0111\u00f3, \u0111\u00e2y l\u00e0 m\u1ed9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean do nh\u00e0 cung c\u1ea5p quy \u0111\u1ecbnh, th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 Cisco Systems s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thu\u1eadt ng\u1eef \u201cLH\u201d l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <em>Chuy\u1ebfn bay \u0111\u01b0\u1eddng d\u00e0i<\/em>, v\u00e0 thu\u1eadt ng\u1eef n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ec9 c\u00e1c b\u1ed9 thu ph\u00e1t SFP ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc t\u01b0\u01a1ng t\u1ef1 nh\u01b0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477867.htm\">M\u00f4-\u0111un 1000BASE-LX<\/a>, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u01b0\u1edbc s\u00f3ng kho\u1ea3ng 1310 nm<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 c\u00e1c li\u00ean k\u1ebft c\u00e1p quang \u0111\u01a1n mode (SMF) v\u1edbi kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn kho\u1ea3ng 10 km<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) trong c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng c\u0169<\/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 tri\u1ec3n khai th\u1ef1c t\u1ebf, 1000BASE-LH v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 1000BASE-LX, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng Cisco, n\u01a1i vi\u1ec7c g\u1eafn nh\u00e3n k\u1ebft h\u1ee3p <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\">1000BASE-LX\/LH<\/a> l\u00e0 \u0111i\u1ec1u ph\u1ed5 bi\u1ebfn. C\u00e1ch \u0111\u1eb7t t\u00ean k\u00e9p n\u00e0y ch\u1ec9 \u0111\u01a1n thu\u1ea7n ph\u1ea3n \u00e1nh vi\u1ec7c tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE (LX) k\u1ebft h\u1ee3p v\u1edbi thu\u1eadt ng\u1eef ti\u1ebfp th\u1ecb c\u1ee7a nh\u00e0 cung c\u1ea5p (LH), ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 h\u00e0nh vi truy\u1ec1n d\u1eabn v\u1eadt l\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n ghi nh\u1edb ch\u00ednh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai kh\u00e1i ni\u1ec7m n\u00e0y kh\u00f4ng n\u1eb1m \u1edf hi\u1ec7u su\u1ea5t k\u1ef9 thu\u1eadt m\u00e0 l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 x\u00e2y d\u1ef1ng th\u01b0\u01a1ng hi\u1ec7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1000BASE-LX = \u0110\u1ecbnh ngh\u0129a theo ti\u00eau chu\u1ea9n IEEE<\/p><\/li>\n\n\n\n<li><p>1000BASE-LH = t\u00ean g\u1ecdi do nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1eb7t (th\u01b0\u1eddng \u0111\u01b0\u1ee3c Cisco g\u1ecdi l\u00e0 \u201cLong Haul\u201d)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap x\u00f3a b\u1ecf m\u1ed9t trong nh\u1eefng quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t trong m\u1ea1ng c\u00e1p quang: \u0111\u00f3 l\u00e0 LX v\u00e0 LH \u0111\u1ea1i di\u1ec7n cho c\u00e1c kh\u1ea3 n\u0103ng quang h\u1ecdc kh\u00e1c nhau. Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang ch\u1ee7 y\u1ebfu d\u00f9ng \u0111\u1ec3 ch\u1ec9 c\u00f9ng m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t SFP Gigabit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 1000BASE-LX so v\u1edbi 1000BASE-LH: Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi so s\u00e1nh 1000BASE-LX v\u00e0 1000BASE-LH, k\u1ebft lu\u1eadn quan tr\u1ecdng nh\u1ea5t l\u00e0 ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 hai c\u00f4ng ngh\u1ec7 quang h\u1ecdc c\u1ea1nh tranh nhau. Thay v\u00e0o \u0111\u00f3, ch\u00fang m\u00f4 t\u1ea3 c\u00e1c b\u1ed9 thu ph\u00e1t s\u1ee3i quang Gigabit Ethernet g\u1ea7n nh\u01b0 gi\u1ed1ng h\u1ec7t nhau, v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t ch\u1ee7 y\u1ebfu n\u1eb1m \u1edf ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 c\u00e1ch \u0111\u1eb7t t\u00ean c\u1ee7a nh\u00e0 cung c\u1ea5p ch\u1ee9 kh\u00f4ng ph\u1ea3i \u1edf h\u00e0nh vi truy\u1ec1n d\u1eabn v\u1eadt l\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn c\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng v\u00e0 ng\u01b0\u1eddi mua, c\u00e1c y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 \u201cLX hay LH\u201d, m\u00e0 l\u00e0 lo\u1ea1i s\u1ee3i quang, kho\u1ea3ng c\u00e1ch k\u1ebft n\u1ed1i v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea1 t\u1ea7ng hi\u1ec7n c\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\/443cb3a60ab7407eacd294fc450219c6.jpg\" alt=\"1000BASE-LX so v\u1edbi 1000BASE-LH: Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1\" class=\"wp-image-2422\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/443cb3a60ab7407eacd294fc450219c6.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/443cb3a60ab7407eacd294fc450219c6-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/443cb3a60ab7407eacd294fc450219c6-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/443cb3a60ab7407eacd294fc450219c6-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/443cb3a60ab7407eacd294fc450219c6-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ea3ng so s\u00e1nh 1000BASE-LX v\u00e0 1000BASE-LH<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>1000BASE-LX<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>1000BASE-LH<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3z<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u00e0nh ri\u00eang cho nh\u00e0 cung c\u1ea5p (th\u01b0\u1eddng l\u00e0 Cisco)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc s\u00f3ng<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310 nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>H\u00e0nh vi quang h\u1ecdc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gigabit Ethernet ti\u00eau chu\u1ea9n qua c\u00e1p quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1ed1ng nh\u01b0 LX (kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t v\u1eadt l\u00fd)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a kho\u1ea3ng 10 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a kho\u1ea3ng 10 km<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p quang \u0111a mode (MMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a kho\u1ea3ng 550 m (t\u00f9y \u0111i\u1ec1u ki\u1ec7n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a kho\u1ea3ng 550 m (t\u00f9y \u0111i\u1ec1u ki\u1ec7n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi MMF th\u1ebf h\u1ec7 c\u0169 (OM1\/OM2)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u t\u01b0\u01a1ng t\u1ef1<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i t\u00ean<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n ng\u00e0nh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u1ebfp th\u1ecb \/ \u0110\u1eb7t t\u00ean nh\u00e0 cung c\u1ea5p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1ch s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Thi\u1ebft b\u1ecb quang c\u00f3 nh\u00e3n hi\u1ec7u Cisco\/doanh nghi\u1ec7p<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">B\u01b0\u1edbc s\u00f3ng: V\u1ec1 c\u01a1 b\u1ea3n gi\u1ed1ng h\u1ec7t nhau (1310 nm)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai m\u00f4-\u0111un quang 1000BASE-LX v\u00e0 1000BASE-LH \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/1310nm-optical-module-applications-performance-comparison\/\">B\u01b0\u1edbc s\u00f3ng 1310 nm<\/a> d\u1ea3i t\u1ea7n s\u1ed1, v\u1ed1n l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u1eeda s\u1ed5 quang th\u1ee9 hai ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ng Gigabit Ethernet qua c\u00e1p quang.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1000BASE-LX \u2192 Ti\u00eau chu\u1ea9n quang h\u1ecdc do IEEE quy \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>1000BASE-LH \u2192 C\u00e1ch \u0111\u1eb7t t\u00ean c\u1ee7a nh\u00e0 cung c\u1ea5p cho c\u00f9ng m\u1ed9t l\u1edbp quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft lu\u1eadn th\u1ef1c ti\u1ec5n: Trong c\u00e1c tri\u1ec3n khai ti\u00eau chu\u1ea9n, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 b\u01b0\u1edbc s\u00f3ng gi\u1eefa c\u00e1c m\u00f4-\u0111un LX v\u00e0 LH. Ch\u00fang s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t d\u1ea3i quang h\u1ecdc v\u00e0 do \u0111\u00f3 ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nhau \u1edf l\u1edbp v\u1eadt l\u00fd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u00edn hi\u1ec7u: C\u00f9ng h\u1ea1ng v\u1ec1 ph\u1ea1m vi ph\u1ee7 s\u00f3ng trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p tri\u1ec3n khai th\u1ef1c t\u1ebf, c\u1ea3 m\u00f4-\u0111un LX v\u00e0 LH \u0111\u1ec1u h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u00edn hi\u1ec7u \u1edf kho\u1ea3ng c\u00e1ch t\u01b0\u01a1ng t\u1ef1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF): t\u1ed1i \u0111a kho\u1ea3ng 10 km<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a mode (MMF)<strong>:<\/strong> l\u00ean \u0111\u1ebfn kho\u1ea3ng 550 m (t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i s\u1ee3i quang v\u00e0 \u0111i\u1ec1u ki\u1ec7n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao nhi\u1ec1u nh\u00e0 cung c\u1ea5p k\u1ebft h\u1ee3p c\u00e1c k\u00fd hi\u1ec7u 1000BASE-LX\/LH, nh\u1eb1m ch\u1ec9 ra m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t thay v\u00ec hai c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i h\u1ecdc th\u1ef1c ti\u1ec5n: Trong ti\u00eau chu\u1ea9n, \u201cLH\u201d kh\u00f4ng t\u1ef1 \u0111\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n so v\u1edbi \u201cLX\u201d <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477868.htm\">SFP Gigabit<\/a> c\u00e1ch s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c lo\u1ea1i s\u1ee3i quang: SMF so v\u1edbi MMF th\u1ebf h\u1ec7 c\u0169<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai m\u00f4-\u0111un LX v\u00e0 LH \u0111\u1ec1u c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n mode (SMF) \u2192 tr\u01b0\u1eddng h\u1ee3p \u1ee9ng d\u1ee5ng ch\u00ednh v\u00e0 \u0111\u00e1ng tin c\u1eady nh\u1ea5t<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) \u2192 ch\u1ec9 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, khi s\u1eed d\u1ee5ng c\u00e1c phi\u00ean b\u1ea3n c\u0169 h\u01a1n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/om1-om2-om3-om4-om5-multimode-fiber-guide\/\">c\u00e1p quang \u0111a mode<\/a> \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i c\u00e1p (ch\u1eb3ng h\u1ea1n nh\u01b0 OM1 ho\u1eb7c OM2), c\u00f3 th\u1ec3 c\u1ea7n s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh t\u00edn hi\u1ec7u v\u00e0 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 ph\u00e2n t\u00e1n ch\u1ebf \u0111\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i h\u1ecdc th\u1ef1c ti\u1ec5n: Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c nhi\u1ec1u h\u01a1n v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1 t\u1ea7ng c\u00e1p quang h\u01a1n l\u00e0 vi\u1ec7c m\u00f4-\u0111un \u0111\u00f3 \u0111\u01b0\u1ee3c d\u00e1n nh\u00e3n LX hay LH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean: Ti\u00eau chu\u1ea9n IEEE so v\u1edbi chi\u1ebfn l\u01b0\u1ee3c ti\u1ebfp th\u1ecb c\u1ee7a nh\u00e0 cung c\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i d\u1eabn \u0111\u1ebfn ph\u1ea7n l\u1edbn s\u1ef1 nh\u1ea7m l\u1eabn trong vi\u1ec7c t\u00ecm ki\u1ebfm:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>1000BASE-LX<\/strong> \u2192 Thu\u1eadt ng\u1eef \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a b\u1edfi IEEE theo ti\u00eau chu\u1ea9n IEEE 802.3z<\/p><\/li>\n\n\n\n<li><p><strong>1000BASE-LH<\/strong> \u2192 C\u00e1ch \u0111\u1eb7t t\u00ean ri\u00eang c\u1ee7a nh\u00e0 cung c\u1ea5p, \u0111\u01b0\u1ee3c Cisco Systems s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a Cisco \u0111\u01b0\u1ee3c ghi nh\u00e3n l\u00e0 1000BASE-LX\/LH, \u0111i\u1ec1u n\u00e0y th\u1ec3 hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LX = Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE<\/p><\/li>\n\n\n\n<li><p>LH = Thu\u1eadt ng\u1eef ti\u1ebfp th\u1ecb c\u1ee7a Cisco (\u201cLong Haul\u201d)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd: LH kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n quang h\u1ecdc ri\u00eang bi\u1ec7t \u2014 n\u00f3 l\u00e0 m\u1ed9t l\u1edbp \u0111\u1eb7t t\u00ean \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean LX.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00f3m t\u1eaft: S\u1ef1 kh\u00e1c bi\u1ec7t trong th\u1ef1c t\u1ebf l\u00e0 r\u1ea5t nh\u1ecf<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb g\u00f3c \u0111\u1ed9 tri\u1ec3n khai, nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\" target=\"_blank\" rel=\"\">b\u01b0\u1edbc s\u00f3ng<\/a> ho\u1eb7c t\u00ednh ch\u1ea5t quang h\u1ecdc<\/p><\/li>\n\n\n\n<li><p>C\u00f9ng l\u1edbp kho\u1ea3ng c\u00e1ch v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u1ee7 y\u1ebfu n\u1eb1m \u1edf vi\u1ec7c ti\u00eau chu\u1ea9n h\u00f3a (LX) so v\u1edbi x\u00e2y d\u1ef1ng th\u01b0\u01a1ng hi\u1ec7u (LH)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c m\u00f4-\u0111un LX v\u00e0 LH ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nhau trong h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ng Gigabit Ethernet.<br>\u2714 Tr\u1ecdng t\u00e2m th\u1ef1c s\u1ef1 c\u1ee7a k\u1ef9 thu\u1eadt n\u00ean l\u00e0 lo\u1ea1i s\u1ee3i quang, ng\u00e2n s\u00e1ch kho\u1ea3ng c\u00e1ch v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u00ednh nh\u00e3n hi\u1ec7u \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 1000BASE-LX\/LH c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang \u0111\u01a1n mode v\u00e0 \u0111a mode kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi quan tr\u1ecdng nh\u1ea5t m\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng \u0111\u1eb7t ra khi so s\u00e1nh <strong>1<\/strong>000BASE-LX so v\u1edbi 1000BASE-LH, b\u1edfi v\u00ec \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn th\u00e0nh c\u00f4ng c\u1ee7a vi\u1ec7c tri\u1ec3n khai trong th\u1ef1c t\u1ebf, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a k\u1ebft n\u1ed1i v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh mua s\u1eafm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn l\u00e0: <strong>c\u00f3 <\/strong>\u2014 1000BASE-LX\/LH \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u1ea3 s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u00e0 s\u1ee3i quang \u0111a mode (MMF), nh\u01b0ng v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 gi\u1edbi h\u1ea1n kh\u00e1c nhau.<\/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\/37ad2e363f244d79ba819254fa2ab455.jpg\" alt=\"1000BASE-LX\/LH c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang \u0111\u01a1n mode v\u00e0 \u0111a mode kh\u00f4ng?\" class=\"wp-image-2423\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37ad2e363f244d79ba819254fa2ab455.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37ad2e363f244d79ba819254fa2ab455-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37ad2e363f244d79ba819254fa2ab455-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37ad2e363f244d79ba819254fa2ab455-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37ad2e363f244d79ba819254fa2ab455-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF) \u2014 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ti\u00eau chu\u1ea9n<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i s\u1ee3i quang: S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch th\u00f4ng th\u01b0\u1eddng: t\u1ed1i \u0111a kho\u1ea3ng 10 km<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng: 1310 nm<\/p><\/li>\n\n\n\n<li><p>\u1ee8ng d\u1ee5ng: m\u1ea1ng tr\u1ee5c ch\u00ednh, m\u1ea1ng khu\u00f4n vi\u00ean, k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng m\u1eb7c \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady nh\u1ea5t d\u00e0nh cho c\u00e1c h\u1ec7 th\u1ed1ng quang h\u1ecdc LX\/LH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) \u2014 S\u1eed d\u1ee5ng th\u1ee9 c\u1ea5p \/ S\u1eed d\u1ee5ng truy\u1ec1n th\u1ed1ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i s\u1ee3i quang: S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch th\u00f4ng th\u01b0\u1eddng: l\u00ean \u0111\u1ebfn kho\u1ea3ng 550 m\u00e9t<\/p><\/li>\n\n\n\n<li><p>Ho\u1ea1t \u0111\u1ed9ng ch\u1ee7 y\u1ebfu tr\u00ean c\u00e1p s\u1ee3i \u0111a mode (MMF) ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n (OM2\/OM3)<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang th\u1ebf h\u1ec7 c\u0169 (OM1) c\u00f3 th\u1ec3 c\u1ea7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7c bi\u1ec7t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00eau c\u1ea7u quan tr\u1ecdng: Trong nhi\u1ec1u h\u1ec7 th\u1ed1ng MMF c\u0169, m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/mode-conditioning-patch-cables-how-they-work-in-networks\/\">C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9<\/a> (MCP) l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 kho\u1ea3ng c\u00e1ch v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t trong th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb kho\u1ea3ng c\u00e1ch danh \u0111\u1ecbnh, nh\u01b0ng hi\u1ec7u su\u1ea5t truy\u1ec1n d\u1eabn th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 v\u1eadt l\u00fd, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i v\u00e0 c\u1ea5p \u0111\u1ed9 s\u1ee3i quang (OM1, OM2, OM3 ho\u1eb7c SMF)<\/p><\/li>\n\n\n\n<li><p>S\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m n\u1ed1i v\u00e0 b\u1ea3ng ph\u00e2n ph\u1ed1i trong \u0111\u01b0\u1eddng truy\u1ec1n<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 s\u1ea1ch c\u1ee7a \u0111\u1ea7u n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang c\u1ee7a b\u1ed9 thu ph\u00e1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c gi\u00e1 tr\u1ecb h\u01b0\u1edbng d\u1eabn \u0111i\u1ec3n h\u00ecnh l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF): t\u1ed1i \u0111a kho\u1ea3ng 10 km<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF): t\u1ed1i \u0111a kho\u1ea3ng 550 m trong \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng<\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng MMF th\u1ebf h\u1ec7 c\u0169<strong>:<\/strong> c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng MCP v\u00e0 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n \u0111\u00e1ng k\u1ec3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd: C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang c\u00f3 t\u00e1c \u0111\u1ed9ng l\u1edbn h\u01a1n \u0111\u1ebfn hi\u1ec7u su\u1ea5t so v\u1edbi ch\u00ednh vi\u1ec7c g\u1eafn nh\u00e3n LX hay LH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5 v\u1ec1 tri\u1ec3n khai c\u1ee7a nh\u00e0 cung c\u1ea5p (Cisco Systems)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong t\u00e0i li\u1ec7u c\u1ee7a Cisco Systems, m\u00f4-\u0111un SFP 1000BASE-LX\/LH th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n mode c\u00f3 chi\u1ec1u d\u00e0i l\u00ean \u0111\u1ebfn 10 km<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 d\u00e0i t\u1ed1i \u0111a 550 m<\/p><\/li>\n\n\n\n<li><p>C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 d\u00e0nh cho c\u00e1c m\u00f4i tr\u01b0\u1eddng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 th\u1ebf h\u1ec7 c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng k\u00fd hi\u1ec7u LX\/LH \u0111\u1ea1i di\u1ec7n cho m\u1ed9t lo\u1ea1i quang h\u1ecdc duy nh\u1ea5t h\u1ed7 tr\u1ee3 hai s\u1ee3i quang, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 hai ti\u00eau chu\u1ea9n v\u1eadt l\u00fd ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00f3m t\u1eaft tri\u1ec3n khai th\u1ef1c t\u1ebf<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c quy\u1ebft \u0111\u1ecbnh v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 mua s\u1eafm, c\u00e1c h\u01b0\u1edbng d\u1eabn sau \u0111\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF): \u0110\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb v\u00e0 h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 cho c\u00e1c li\u00ean k\u1ebft \u0111\u01b0\u1eddng d\u00e0i<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF): \u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 nh\u01b0ng ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i s\u1ee3i quang v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1eafp \u0111\u1eb7t<\/p><\/li>\n\n\n\n<li><p>C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9: B\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 trong m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng tri\u1ec3n khai s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) th\u1ebf h\u1ec7 c\u0169<\/p><\/li>\n\n\n\n<li><p>Ghi nh\u00e3n LX so v\u1edbi LH: Kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch quang h\u1ecdc hay hi\u1ec7u su\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 1000BASE-LX c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi 1000BASE-LH kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi tr\u1ef1c ti\u1ebfp: <strong>C\u00f3, Ch\u00fang Ho\u00e0n To\u00e0n T\u01b0\u01a1ng Th\u00edch<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. 1000BASE-LX v\u00e0 1000BASE-LH t\u01b0\u01a1ng th\u00edch v\u1edbi nhau v\u00e0 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng chung trong c\u00e1c m\u00f4i tr\u01b0\u1eddng Gigabit Ethernet ti\u00eau chu\u1ea9n.<br>Trong c\u00e1c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ch\u1ee9c n\u0103ng n\u00e0o ng\u0103n c\u1ea3n m\u00f4-\u0111un LX k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t <a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/www.cisco.com\/site\/us\/en\/products\/networking\/interfaces-modules\/1000base-lx-lh-sfp\/index.html\">M\u00f4-\u0111un LH<\/a>, mi\u1ec5n l\u00e0 c\u1ea3 hai thi\u1ebft b\u1ecb \u0111\u1ec1u h\u1ed7 tr\u1ee3 c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc gi\u1ed1ng nhau (b\u01b0\u1edbc s\u00f3ng, lo\u1ea1i s\u1ee3i quang v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-link-budget-calculation-formula-example\/\">ng\u00e2n s\u00e1ch li\u00ean k\u1ebft<\/a>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, <strong>ch\u00fang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 thu\u1ed9c c\u00f9ng m\u1ed9t l\u1edbp quang h\u1ecdc v\u1edbi b\u1ed9 thu ph\u00e1t SFP<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2.jpg\" alt=\"1000BASE-LX c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi 1000BASE-LH kh\u00f4ng?\" class=\"wp-image-2424\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/466aeba5a815406d9bbc00a7cb18a9d2-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i Sao LX V\u00e0 LH C\u00f3 Th\u1ec3 Ho\u00e1n \u0110\u1ed5i Cho Nhau Trong Th\u1ef1c T\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd do t\u1ea1i sao 1000BASE-LX v\u00e0 1000BASE-LH c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ea3 hai th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm<\/p><\/li>\n\n\n\n<li><p>C\u1ea3 hai \u0111\u1ec1u tu\u00e2n theo c\u00f9ng m\u1ed9t c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng Gigabit Ethernet quang \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong ti\u00eau chu\u1ea9n IEEE 802.3z<\/p><\/li>\n\n\n\n<li><p>C\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 c\u00e1c d\u1ea3i t\u1ea7n s\u1ed1 t\u01b0\u01a1ng t\u1ef1 cho s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u00e0 s\u1ee3i quang \u0111a mode (MMF)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do c\u00e1c \u0111\u1eb7c t\u00ednh truy\u1ec1n d\u1eabn quang h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a, n\u00ean kh\u00f4ng c\u00f3 s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch \u1edf c\u1ea5p \u0111\u1ed9 giao th\u1ee9c hay l\u1edbp v\u1eadt l\u00fd gi\u1eefa c\u00e1c m\u00f4-\u0111un LX v\u00e0 LH.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng \u0111i\u1ec7p ch\u00ednh:<\/strong> Trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf, LX v\u00e0 LH kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n c\u1ea1nh tranh v\u1edbi nhau \u2014 ch\u00fang l\u00e0 c\u00e1c bi\u1ebfn th\u1ec3 c\u1ee7a c\u00f9ng m\u1ed9t l\u1edbp quang h\u1ecdc.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i Sao Cisco S\u1eed D\u1ee5ng C\u1ea3 Hai Nh\u00e3n \u201cLX\u201d V\u00e0 \u201cLH\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ghi nh\u00e3n k\u00e9p nh\u01b0 1000BASE-LX\/LH th\u01b0\u1eddng th\u1ea5y tr\u00ean c\u00e1c m\u00f4-\u0111un c\u1ee7a Cisco Systems v\u00e0 c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y x\u1ea3y ra v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cLX\u201d l\u00e0 k\u00fd hi\u1ec7u theo ti\u00eau chu\u1ea9n IEEE (<em>B\u01b0\u1edbc s\u00f3ng d\u00e0i<\/em>)<\/p><\/li>\n\n\n\n<li><p>\u201cLH\u201d l\u00e0 c\u00e1ch \u0111\u1eb7t t\u00ean theo quy \u01b0\u1edbc c\u1ee7a nh\u00e0 cung c\u1ea5p Cisco (<em>Chuy\u1ebfn bay \u0111\u01b0\u1eddng d\u00e0i<\/em>)<\/p><\/li>\n\n\n\n<li><p>Cisco k\u1ebft h\u1ee3p c\u1ea3 hai y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch ch\u00e9o v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh v\u00e0 c\u00e1ch \u0111\u1eb7t t\u00ean s\u1ea3n ph\u1ea9m tr\u01b0\u1edbc \u0111\u00e2y<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, m\u1ed9t m\u00f4-\u0111un SFP c\u1ee7a Cisco c\u00f3 nh\u00e3n 1000BASE-LX\/LH c\u00f3 ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quang h\u1ecdc LX tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE<\/p><\/li>\n\n\n\n<li><p>Ch\u1ec9 \u0111\u1ecbnh ti\u1ebfp th\u1ecb c\u1ee7a Cisco d\u00e0nh cho c\u00f9ng m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u00ednh ch\u1ea5t quang h\u1ecdc hay kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f3m t\u1eaft v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 C\u00e1c m\u00f4-\u0111un LX v\u00e0 LH c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau<\/p><\/li>\n\n\n\n<li><p>\u2714 Ch\u00fang c\u00f3 c\u00f9ng c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc (b\u01b0\u1edbc s\u00f3ng v\u00e0 ph\u1ea1m vi ph\u1ee7 s\u00f3ng)<\/p><\/li>\n\n\n\n<li><p>\u2714 Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay th\u1ebf cho nhau trong c\u00e1c m\u1ea1ng doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>\u26a0 Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c nhi\u1ec1u h\u01a1n v\u00e0o lo\u1ea1i s\u1ee3i quang v\u00e0 ng\u00e2n s\u00e1ch li\u00ean k\u1ebft h\u01a1n l\u00e0 v\u00e0o nh\u00e3n hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">1000BASE-LX v\u00e0 1000BASE-LH c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y ch\u1ee7 y\u1ebfu xu\u1ea5t ph\u00e1t t\u1eeb nh\u1eefng l\u00fd do sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LX = C\u00e1ch \u0111\u1eb7t t\u00ean theo ti\u00eau chu\u1ea9n IEEE<\/p><\/li>\n\n\n\n<li><p>LH = c\u00e1ch ghi nh\u00e3n ri\u00eang c\u1ee7a nh\u00e0 cung c\u1ea5p (th\u01b0\u1eddng l\u00e0 Cisco)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, khi b\u1ea1n th\u1ea5y k\u00fd hi\u1ec7u 1000BASE-LX\/LH, \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 hai c\u00f4ng ngh\u1ec7 kh\u00e1c nhau \u2014 m\u00e0 ch\u1ec9 ra m\u1ed9t l\u1edbp c\u00f4ng ngh\u1ec7 quang Gigabit duy nh\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c, v\u1edbi hai c\u00e1ch \u0111\u1eb7t t\u00ean kh\u00e1c nhau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 \u201cCisco 1000BASE-LX\/LH SFP\u201d c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi tr\u1ef1c ti\u1ebfp: <strong>\u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i SFP duy nh\u1ea5t c\u00f3 hai t\u00ean g\u1ecdi<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e3n \u201c<a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/www.cisco.com\/site\/us\/en\/products\/networking\/interfaces-modules\/1000base-lx-lh-sfp\/index.html\">Cisco 1000BASE-LX\/LH SFP<\/a>\u201d \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t quang, ch\u1ee9 kh\u00f4ng ph\u1ea3i hai s\u1ea3n ph\u1ea9m kh\u00e1c nhau. \u0110\u00f3 l\u00e0 m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477877.htm\">M\u00f4-\u0111un SFP Gigabit Ethernet<\/a> tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n quang 1000BASE-LX, \u0111\u1ed3ng th\u1eddi s\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean n\u1ed9i b\u1ed9 c\u1ee7a Cisco l\u00e0 \u201cLH\u201d (Long Haul).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 S\u1ea3n ph\u1ea9m n\u00e0y ho\u00e0n to\u00e0n tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE 1000BASE-LX<\/p><\/li>\n\n\n\n<li><p>\u2714 S\u1ea3n ph\u1ea9m n\u00e0y \u0111\u01b0\u1ee3c Cisco ti\u1ebfp th\u1ecb v\u1edbi \u0111\u1ecbnh d\u1ea1ng t\u00ean k\u1ebft h\u1ee3p LX\/LH<\/p><\/li>\n\n\n\n<li><p>\u2714 \u0110i\u1ec1u n\u00e0y th\u1ec3 hi\u1ec7n m\u1ed9t h\u00e0nh vi quang h\u1ecdc th\u1ed1ng nh\u1ea5t, ch\u1ee9 kh\u00f4ng ph\u1ea3i hai ti\u00eau chu\u1ea9n ri\u00eang bi\u1ec7t<\/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\/1e47c276c85a4ca391fa2a9c7cb1eb4b.jpg\" alt=\"\u201cCisco 1000BASE-LX\/LH SFP\u201d c\u00f3 ngh\u0129a l\u00e0 g\u00ec?\" class=\"wp-image-2425\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e47c276c85a4ca391fa2a9c7cb1eb4b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e47c276c85a4ca391fa2a9c7cb1eb4b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e47c276c85a4ca391fa2a9c7cb1eb4b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e47c276c85a4ca391fa2a9c7cb1eb4b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1e47c276c85a4ca391fa2a9c7cb1eb4b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i Sao Cisco S\u1eed D\u1ee5ng \u0110\u1ed3ng Th\u1eddi C\u1ea3 Nh\u00e3n \u201cLX\/LH\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e3n k\u1ebft h\u1ee3p t\u1ed3n t\u1ea1i do c\u00f3 hai h\u1ec7 th\u1ed1ng \u0111\u1eb7t t\u00ean ch\u1ed3ng ch\u00e9o nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/477885.htm\" target=\"_self\">LX<\/a> (B\u01b0\u1edbc s\u00f3ng d\u00e0i) \u2192 \u0110\u01b0\u1ee3c IEEE quy \u0111\u1ecbnh trong ti\u00eau chu\u1ea9n IEEE 802.3z<\/p><\/li>\n\n\n\n<li><p>LH (Long Haul) \u2192 Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean s\u1ea3n ph\u1ea9m ri\u00eang c\u1ee7a Cisco \u0111\u01b0\u1ee3c Cisco Systems s\u1eed d\u1ee5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn trong c\u00e1c m\u00f4i tr\u01b0\u1eddng h\u1ed7n h\u1ee3p, Cisco s\u1eed d\u1ee5ng k\u00fd hi\u1ec7u \u201c1000BASE-LX\/LH\u201d \u0111\u1ec3 ch\u1ec9 r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, m\u00f4-\u0111un n\u00e0y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb quang h\u1ecdc tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n LX<\/p><\/li>\n\n\n\n<li><p>\u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n trong h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i d\u00f2ng s\u1ea3n ph\u1ea9m LH c\u1ee7a Cisco<\/p><\/li>\n\n\n\n<li><p>C\u1ea3 hai thu\u1eadt ng\u1eef n\u00e0y \u0111\u1ec1u m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 thu ph\u00e1t v\u1eadt l\u00fd<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u00dd ngh\u0129a c\u1ee7a \u0111i\u1ec1u n\u00e0y trong vi\u1ec7c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ef1c t\u1ebf, m\u1ed9t m\u00f4-\u0111un SFP Cisco 1000BASE-LX\/LH th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u1edbi kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn ~10 km<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) v\u1edbi kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn ~550 m (t\u00f9y \u0111i\u1ec1u ki\u1ec7n)<\/p><\/li>\n\n\n\n<li><p>C\u00f3 th\u1ec3 c\u1ea7n s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng MMF th\u1ebf h\u1ec7 c\u0169<\/p><\/li>\n\n\n\n<li><p>C\u00f3 th\u1ec3 t\u01b0\u01a1ng th\u00edch v\u1edbi ti\u00eau chu\u1ea9n <a href=\"https:\/\/www.l-p.com\/products\/476765.htm\" target=\"\" rel=\"\">M\u00f4-\u0111un quang 1000BASE-LX<\/a> t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd: Nh\u00e3n \u201cLX\/LH\u201d kh\u00f4ng cho th\u1ea5y hi\u1ec7u su\u1ea5t \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n hay thu\u1ed9c m\u1ed9t ph\u00e2n lo\u1ea1i kho\u1ea3ng c\u00e1ch kh\u00e1c \u2014 m\u00e0 ch\u1ec9 th\u1ec3 hi\u1ec7n s\u1ef1 t\u01b0\u01a1ng th\u00edch v\u1ec1 ti\u00eau chu\u1ea9n c\u0169ng nh\u01b0 s\u1ef1 th\u1ed1ng nh\u1ea5t trong c\u00e1ch \u0111\u1eb7t t\u00ean c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i Sao Nh\u00e3n N\u00e0y G\u00e2y Nh\u1ea7m L\u1eabn Cho Ng\u01b0\u1eddi D\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi \u0111\u01b0\u1ee3c t\u00ecm ki\u1ebfm nhi\u1ec1u nh\u1ea5t v\u00ec ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng cho r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cLX\u201d = m\u1ed9t lo\u1ea1i \u1ed1ng k\u00ednh<\/p><\/li>\n\n\n\n<li><p>\u201cLH\u201d = m\u1ed9t lo\u1ea1i \u1ed1ng k\u00ednh kh\u00e1c, c\u00f3 ti\u00eau c\u1ef1 d\u00e0i h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, th\u00f4ng tin ghi tr\u00ean nh\u00e3n c\u1ee7a Cisco cho th\u1ea5y r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n quang h\u1ecdc LH ri\u00eang bi\u1ec7t<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u1edf kh\u1ea3 n\u0103ng ph\u1ea7n c\u1ee9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft lu\u1eadn cu\u1ed1i c\u00f9ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cisco 1000BASE-LX\/LH SFP l\u00e0 m\u1ed9t b\u1ed9 thu ph\u00e1t LX \u0111\u01a1n l\u1ebb tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE, \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo h\u1ec7 th\u1ed1ng \u0111\u1eb7t t\u00ean LH (Long Haul) c\u1ee7a Cisco.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 hi\u1ec7u su\u1ea5t gi\u1eefa LX v\u00e0 LH<\/p><\/li>\n\n\n\n<li><p>M\u00f4-\u0111un n\u00e0y l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p quang Gigabit Ethernet t\u00edch h\u1ee3p<\/p><\/li>\n\n\n\n<li><p>Nh\u00e3n n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh r\u00f5 r\u00e0ng trong t\u00e0i li\u1ec7u v\u00e0 s\u1ef1 th\u1ed1ng nh\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 B\u1ea1n c\u00f3 c\u1ea7n c\u00e1p n\u1ed1i c\u00f3 ch\u1ee9c n\u0103ng \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 cho 1000BASE-LX\/LH kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai v\u00ec nhi\u1ec1u s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i gi\u1eefa 1000BASE-LX v\u00e0 1000BASE-LH trong c\u00e1c m\u1ea1ng th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i do ch\u00ednh m\u00f4-\u0111un SFP g\u00e2y ra, m\u00e0 l\u00e0 do vi\u1ec7c s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 kh\u00f4ng \u0111\u00fang c\u00e1ch m\u00e0 kh\u00f4ng c\u00f3 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u ch\u1ec9nh th\u00edch h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi tr\u1ef1c ti\u1ebfp:<strong> Ch\u1ec9 b\u1eaft bu\u1ed9c trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u1ee5 th\u1ec3 li\u00ean quan \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111a ch\u1ebf \u0111\u1ed9 c\u0169<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 (MCP) cho 1000BASE-LX\/LH.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00eau c\u1ea7u n\u00e0y ch\u1ec9 \u00e1p d\u1ee5ng khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang LX\/LH tr\u00ean s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) th\u1ebf h\u1ec7 c\u0169, \u0111\u1eb7c bi\u1ec7t l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t OM1 (s\u1ee3i quang 62,5 \u00b5m)<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang OM2 trong c\u00e1c tuy\u1ebfn truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng c\u00e1p c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m<\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng c\u00e1p m\u1ea1ng c\u1ed1t l\u00f5i c\u1ee7a c\u00e1c t\u00f2a nh\u00e0 c\u0169 c\u00f3 b\u1ea3ng n\u1ed1i ho\u1eb7c b\u1ea3ng ph\u00e2n ph\u1ed1i h\u1ed7n h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF), th\u00ec ho\u00e0n to\u00e0n kh\u00f4ng c\u1ea7n d\u00f9ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9.<\/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\/4de1eee039bb4f3981831f95f17a99b7.jpg\" alt=\"B\u1ea1n c\u00f3 c\u1ea7n c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 cho 1000BASE-LX\/LH kh\u00f4ng?\" class=\"wp-image-2426\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4de1eee039bb4f3981831f95f17a99b7.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4de1eee039bb4f3981831f95f17a99b7-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4de1eee039bb4f3981831f95f17a99b7-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4de1eee039bb4f3981831f95f17a99b7-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4de1eee039bb4f3981831f95f17a99b7-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i Sao C\u1ea7n D\u00e2y Nh\u1ea3y \u0110i\u1ec1u Ki\u1ec7n Ch\u1ebf \u0110\u1ed9 (Mode-Conditioning Patch Cable)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un quang 1000BASE-LX\/LH \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho truy\u1ec1n d\u1eabn ch\u1ebf \u0111\u1ed9 \u0111\u01a1n \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm.<br>Khi t\u00edn hi\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a tr\u1ef1c ti\u1ebfp v\u00e0o s\u1ee3i quang \u0111a mode, n\u00f3 c\u00f3 th\u1ec3 t\u1ea1o ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ef1 ph\u00e2n b\u1ed1 \u00e1nh s\u00e1ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean c\u00e1c ch\u1ebf \u0111\u1ed9 s\u00f3ng c\u1ee7a s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/differential-mode-delay-impact-on-fiber-speed-and-quality\/\" target=\"_blank\" rel=\"\">\u0110\u1ed9 Tr\u1ec5 Ch\u00eanh L\u1ec7ch Gi\u1eefa C\u00e1c Mode<\/a> (DMD)<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 bi\u1ebfn d\u1ea1ng t\u00edn hi\u1ec7u theo kho\u1ea3ng c\u00e1ch<\/p><\/li>\n\n\n\n<li><p>T\u00ecnh tr\u1ea1ng m\u1ea5t \u1ed5n \u0111\u1ecbnh ho\u1eb7c s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i kh\u00f4ng li\u00ean t\u1ee5c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ee3i c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 s\u1ebd gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Di chuy\u1ec3n \u0111i\u1ec3m ph\u00f3ng tia laser sang m\u1ed9t v\u1ecb tr\u00ed l\u1ec7ch c\u00f3 ki\u1ec3m so\u00e1t<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3m \u0111\u1ed9 ph\u00e2n t\u00e1n ch\u1ebf \u0111\u1ed9 trong s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>\u1ed4n \u0111\u1ecbnh s\u1ef1 truy\u1ec1n t\u00edn hi\u1ec7u trong c\u00e1c m\u00f4i tr\u01b0\u1eddng MMF truy\u1ec1n th\u1ed1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd: MCP kh\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch t\u0103ng c\u01b0\u1eddng c\u00f4ng su\u1ea5t \u2014 m\u00e0 l\u00e0 \u0111\u1ec3 ki\u1ec3m so\u00e1t c\u00e1ch \u00e1nh s\u00e1ng \u0111i v\u00e0o s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra tri\u1ec3n khai t\u1eebng b\u01b0\u1edbc (H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh xem b\u1ea1n c\u00f3 c\u1ea7n c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 hay kh\u00f4ng, h\u00e3y tham kh\u1ea3o danh s\u00e1ch ki\u1ec3m tra sau \u0111\u00e2y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh lo\u1ea1i s\u1ee3i<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 S\u1ee3i quang \u0111\u01a1n mode (th\u01b0\u1eddng c\u00f3 v\u1ecf b\u1ecdc m\u00e0u v\u00e0ng) \u2192 Kh\u00f4ng c\u1ea7n MCP<\/p><\/li>\n\n\n\n<li><p>\u26a0 S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (th\u01b0\u1eddng c\u00f3 l\u1edbp v\u1ecf m\u00e0u cam\/xanh ng\u1ecdc) \u2192 Ti\u1ebfp t\u1ee5c sang B\u01b0\u1edbc 2<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng s\u1ee3i \u0111\u01b0\u1ee3c t\u1ea1o ra<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>OM3 \/ OM4 \u2192 th\u01b0\u1eddng kh\u00f4ng c\u1ea7n MCP<\/p><\/li>\n\n\n\n<li><p>OM1 \/ OM2 \u2192 C\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng MCP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3: Ki\u1ec3m tra kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eeda ch\u1eefa \u0111o\u1ea1n ng\u1eafn (&lt;100 m) \u2192 th\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n MCP<\/p><\/li>\n\n\n\n<li><p>C\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng d\u00e0i h\u01a1n (h\u00e0ng tr\u0103m m\u00e9t) \u2192 MCP \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb m\u1ea1nh m\u1ebd cho MMF th\u1ebf h\u1ec7 c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 4: Ki\u1ec3m tra t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a li\u00ean k\u1ebft<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111\u1ec3 \u00fd th\u1ea5y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i cao (l\u1ed7i CRC)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i t\u00e1i c\u1ea5u tr\u00fac MCP ho\u1eb7c h\u1ec7 th\u1ed1ng c\u00e1p quang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi N\u00e0o B\u1ea1n KH\u00d4NG C\u1ea7n D\u00e2y Nh\u1ea3y \u0110i\u1ec1u Ki\u1ec7n Ch\u1ebf \u0110\u1ed9 (MCP)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 y\u00ean t\u00e2m kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 hi\u1ec7n \u0111\u1ea1i (OM3\/OM4) v\u1edbi c\u00e1c \u0111o\u1ea1n c\u00e1p ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean bi\u1ec7t cho ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u0111a ch\u1ebf \u0111\u1ed9 thu\u1ea7n t\u00fay (kh\u00f4ng thu\u1ed9c lo\u1ea1i LX\/LH)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft lu\u1eadn cu\u1ed1i c\u00f9ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 kh\u00f4ng ph\u1ea3i l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi 1000BASE-LX\/LH.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 SMF = kh\u00f4ng c\u1ea7n MCP<\/p><\/li>\n\n\n\n<li><p>\u26a0 MMF th\u1ebf h\u1ec7 c\u0169 (OM1\/OM2) = Th\u01b0\u1eddng y\u00eau c\u1ea7u MCP<\/p><\/li>\n\n\n\n<li><p>\u2714 MMF hi\u1ec7n \u0111\u1ea1i (OM3\/OM4) = th\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n MCP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ef1c t\u1ebf kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1, h\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 \u201cLX\/LH kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1p quang\u201d \u0111\u1ec1u do vi\u1ec7c tri\u1ec3n khai c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 kh\u00f4ng \u0111\u00fang c\u00e1ch g\u00e2y ra, ch\u1ee9 kh\u00f4ng ph\u1ea3i do s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u1ee7a m\u00f4-\u0111un SFP.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi l\u1ef1a ch\u1ecdn gi\u1eefa m\u00f4-\u0111un SFP LX v\u00e0 LH<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 vi\u1ec7c so s\u00e1nh gi\u1eefa 1000BASE-LX v\u00e0 1000BASE-LH c\u00f3 v\u1ebb l\u00e0 m\u1ed9t so s\u00e1nh v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, nh\u01b0ng h\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 trong th\u1ef1c t\u1ebf kh\u00f4ng xu\u1ea5t ph\u00e1t t\u1eeb s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t quang h\u1ecdc. Thay v\u00e0o \u0111\u00f3, ch\u00fang xu\u1ea5t ph\u00e1t t\u1eeb vi\u1ec7c hi\u1ec3u nh\u1ea7m c\u00e1c nh\u00e3n hi\u1ec7u, s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch c\u1ee7a h\u1ea1 t\u1ea7ng c\u00e1p quang v\u00e0 c\u00e1c gi\u1ea3 \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai. Ph\u1ea7n n\u00e0y t\u00f3m t\u1eaft nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t th\u01b0\u1eddng g\u1eb7p trong c\u00e1c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf.<\/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\/078e1438770a4096b017ece1ab72b66a.jpg\" alt=\"Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi l\u1ef1a ch\u1ecdn gi\u1eefa m\u00f4-\u0111un SFP LX v\u00e0 LH\" class=\"wp-image-2427\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/078e1438770a4096b017ece1ab72b66a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/078e1438770a4096b017ece1ab72b66a-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/078e1438770a4096b017ece1ab72b66a-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/078e1438770a4096b017ece1ab72b66a-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/078e1438770a4096b017ece1ab72b66a-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 1: Cho r\u1eb1ng LX v\u00e0 LH l\u00e0 hai ti\u00eau chu\u1ea9n hi\u1ec7u su\u1ea5t kh\u00e1c nhau<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p nh\u1ea5t l\u00e0 cho r\u1eb1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LX = m\u1ed9t m\u1ee9c hi\u1ec7u su\u1ea5t<\/p><\/li>\n\n\n\n<li><p>LH = phi\u00ean b\u1ea3n c\u00f3 t\u1ea7m ho\u1ea1t \u0111\u1ed9ng xa h\u01a1n ho\u1eb7c hi\u1ec7u su\u1ea5t cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, c\u1ea3 hai thu\u1eadt ng\u1eef n\u00e0y n\u00f3i chung \u0111\u1ec1u d\u00f9ng \u0111\u1ec3 ch\u1ec9 c\u00f9ng m\u1ed9t l\u1edbp quang h\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a theo ti\u00eau chu\u1ea9n IEEE 802.3z v\u00e0 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Cisco Systems tri\u1ec3n khai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf:<\/strong> C\u00e1c m\u00f4-\u0111un LX v\u00e0 LH th\u01b0\u1eddng c\u00f3 c\u00f9ng b\u01b0\u1edbc s\u00f3ng (1310 nm), ph\u1ea1m vi kho\u1ea3ng c\u00e1ch v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m th\u1ee9 2: B\u1ecf qua lo\u1ea1i s\u1ee3i (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">SMF so v\u1edbi MMF<\/a>)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p tri\u1ec3n khai kh\u00f4ng th\u00e0nh c\u00f4ng x\u1ea3y ra do ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477882.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> m\u00e0 kh\u00f4ng x\u00e1c minh c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p s\u1ee3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng MMF khi c\u1ea7n SMF cho c\u00e1c li\u00ean k\u1ebft \u0111\u01b0\u1eddng d\u00e0i<\/p><\/li>\n\n\n\n<li><p>K\u1ef3 v\u1ecdng MMF s\u1ebd ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 s\u1ee3i quang \u0111\u01a1n mode<\/p><\/li>\n\n\n\n<li><p>K\u1ebft h\u1ee3p c\u00e1c lo\u1ea1i s\u1ee3i quang tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf:<\/strong> Lo\u1ea1i s\u1ee3i quang c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn h\u01a1n nhi\u1ec1u \u0111\u1ebfn hi\u1ec7u su\u1ea5t so v\u1edbi vi\u1ec7c m\u00f4-\u0111un \u0111\u00f3 \u0111\u01b0\u1ee3c d\u00e1n nh\u00e3n LX hay LH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m th\u1ee9 3: Qu\u00ean s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 (MCP) tr\u00ean h\u1ec7 th\u1ed1ng MMF th\u1ebf h\u1ec7 c\u0169<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn kh\u00e1c l\u00e0 vi\u1ec7c tri\u1ec3n khai c\u00e1c thi\u1ebft b\u1ecb quang LX\/LH tr\u00ean s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 c\u0169 m\u00e0 kh\u00f4ng c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p x\u1eed l\u00fd th\u00edch h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i cao (l\u1ed7i CRC)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i b\u1ecb gi\u00e1n \u0111o\u1ea1n ho\u1eb7c kh\u00f4ng th\u00e0nh c\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 (MCP) th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4i tr\u01b0\u1eddng s\u1ee3i quang OM1 v\u00e0 OM2<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tuy\u1ebfn c\u00e1p \u0111a ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1eddng d\u00e0i<\/p><\/li>\n\n\n\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng c\u1ed1t l\u00f5i c\u1ee7a c\u00e1c t\u00f2a nh\u00e0 c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf:<\/strong> Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p MMF th\u1ebf h\u1ec7 c\u0169, MCP kh\u00f4ng ph\u1ea3i l\u00e0 t\u00f9y ch\u1ecdn \u2014 n\u00f3 l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m th\u1ee9 4: Nh\u1ea7m l\u1eabn gi\u1eefa c\u00e1ch \u0111\u1eb7t t\u00ean c\u1ee7a nh\u00e0 cung c\u1ea5p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n IEEE<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng hi\u1ec3u nh\u1ea7m r\u1eb1ng LX v\u00e0 LH l\u00e0 hai ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt ri\u00eang bi\u1ec7t, trong khi th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1000BASE-LX l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n do IEEE quy \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>1000BASE-LH l\u00e0 m\u1ed9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng th\u1ea5y \u1edf c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 nh\u00e3n 1000BASE-LX\/LH, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u1ee7a Cisco Systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf:<\/strong> LX v\u00e0 LH m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng quang h\u1ecdc, nh\u01b0ng xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1eb7t t\u00ean kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m th\u1ee9 5: Qu\u00e1 ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e3n SFP thay v\u00ec l\u1eadp k\u1ebf ho\u1ea1ch ng\u00e2n s\u00e1ch li\u00ean k\u1ebft<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 l\u1ea7n tri\u1ec3n khai th\u1ea5t b\u1ea1i v\u00ec c\u00e1c quy\u1ebft \u0111\u1ecbnh ch\u1ec9 d\u1ef1a tr\u00ean nh\u00e3n m\u00f4-\u0111un thay v\u00ec c\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang h\u1ecdc<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n th\u1ea5t t\u1ea1i \u0111\u1ea7u n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 suy hao s\u1ee3i quang tr\u00ean m\u1ed7i kil\u00f4m\u00e9t<\/p><\/li>\n\n\n\n<li><p>S\u1ed1 l\u01b0\u1ee3ng b\u1ea3ng ph\u00e2n ph\u1ed1i c\u00e1p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf:<\/strong> M\u1ed9t k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed5ng c\u00f4ng su\u1ea5t quang, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o t\u00ean m\u1eabu SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c cho l\u00e0 do \u201cs\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch gi\u1eefa LX v\u00e0 LH\u201d th\u1ef1c ch\u1ea5t l\u1ea1i xu\u1ea5t ph\u00e1t t\u1eeb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1ef1a ch\u1ecdn s\u1ee3i kh\u00f4ng \u0111\u00fang<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebfu MCP trong c\u00e1c m\u00f4i tr\u01b0\u1eddng MMF c\u0169<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 hi\u1ec3u l\u1ea7m v\u1ec1 c\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c thi\u1ebfu k\u1ebf ho\u1ea1ch ng\u00e2n s\u00e1ch quang h\u1ecdc ph\u00f9 h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean th\u1ef1c t\u1ebf, LX v\u00e0 LH kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ea5n \u0111\u1ec1 \u2014 v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n tri\u1ec3n khai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe0 B\u1ea1n n\u00ean ch\u1ecdn m\u00f4-\u0111un n\u00e0o cho m\u1ea1ng c\u1ee7a m\u00ecnh?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c m\u00f4-\u0111un SFP 1000BASE-LX v\u00e0 1000BASE-LH kh\u00f4ng n\u00ean d\u1ef1a tr\u00ean ch\u00ednh nh\u00e3n hi\u1ec7u c\u1ee7a ch\u00fang. Nh\u01b0 \u0111\u00e3 gi\u1ea3i th\u00edch trong b\u00e0i vi\u1ebft n\u00e0y, c\u1ea3 hai thu\u1eadt ng\u1eef n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n \u0111\u1ec1u m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t \u0111\u1eb7c t\u00ednh quang h\u1ecdc. L\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang, kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p, ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u1ef1a tr\u00ean quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong thi\u1ebft k\u1ebf m\u1ea1ng th\u1ef1c t\u1ebf, quy\u1ebft \u0111\u1ecbnh lu\u00f4n ph\u1ea3i d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p quang c\u1ee7a b\u1ea1n, ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u1ef1a v\u00e0o vi\u1ec7c m\u00f4-\u0111un \u0111\u00f3 \u0111\u01b0\u1ee3c ghi l\u00e0 LX hay LH.<\/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\/24313a439f3e445e8addb3e75ffbaab6.jpg\" alt=\"B\u1ea1n n\u00ean ch\u1ecdn m\u00f4-\u0111un n\u00e0o cho m\u1ea1ng c\u1ee7a m\u00ecnh?\" class=\"wp-image-2428\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/24313a439f3e445e8addb3e75ffbaab6.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/24313a439f3e445e8addb3e75ffbaab6-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/24313a439f3e445e8addb3e75ffbaab6-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/24313a439f3e445e8addb3e75ffbaab6-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/24313a439f3e445e8addb3e75ffbaab6-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">H\u01b0\u1edbng d\u1eabn ra quy\u1ebft \u0111\u1ecbnh t\u1eebng b\u01b0\u1edbc<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh lo\u1ea1i s\u1ee3i c\u1ee7a b\u1ea1n<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (SMF):<br>\u2714 L\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t cho 1000BASE-LX\/LH<br>\u2714 H\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e0i (l\u00ean \u0111\u1ebfn kho\u1ea3ng 10 km)<br>\u2714 Truy\u1ec1n d\u1eabn \u1ed5n \u0111\u1ecbnh v\u00e0 t\u1ed5n hao th\u1ea5p<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF):<br>\u2714 \u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 trong h\u1ec7 quang h\u1ecdc LX\/LH trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n<br>\u26a0 C\u1ea7n ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng lo\u1ea1i s\u1ee3i quang (OM1\/OM2\/OM3\/OM4)<br>\u26a0 C\u00f3 th\u1ec3 c\u1ea7n s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 trong c\u00e1c h\u1ec7 th\u1ed1ng c\u0169<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 2: \u0110\u00e1nh gi\u00e1 kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i c\u1ef1 ly ng\u1eafn \u2192 MMF c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee7<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng trong khu\u00f4n vi\u00ean tr\u01b0\u1eddng ho\u1eb7c c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 \u2192 SMF khuy\u1ebfn ngh\u1ecb m\u1ea1nh m\u1ebd<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng d\u00e0i d\u00e0nh cho doanh nghi\u1ec7p ho\u1eb7c c\u00e1c tuy\u1ebfn n\u1ed9i \u0111\u00f4 \u2192 Y\u00eau c\u1ea7u s\u1eed d\u1ee5ng SMF<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 3: Ki\u1ec3m tra m\u00e3 t\u01b0\u01a1ng th\u00edch c\u1ee7a nh\u00e0 cung c\u1ea5p<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 LX v\u00e0 LH c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1 nhau, nh\u01b0ng h\u00e3y lu\u00f4n ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea3ng t\u01b0\u01a1ng th\u00edch gi\u1eefa b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 thu ph\u00e1t<\/p><\/li>\n\n\n\n<li><p>C\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p (\u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng Cisco nh\u01b0 Cisco Systems)<\/p><\/li>\n\n\n\n<li><p>Li\u1ec7u module c\u00f3 \u0111\u01b0\u1ee3c d\u00e1n nh\u00e3n l\u00e0 1000BASE-LX\/LH, cho th\u1ea5y kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch k\u00e9p hay kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f3m t\u1eaft c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c l\u1ef1a ch\u1ecdn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1c ph\u01b0\u01a1ng \u00e1n tri\u1ec3n khai SMF (\u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb):<\/strong><br>\u2714 Ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi 1000BASE-LX\/LH<br>\u2714 C\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng tr\u1ee5c ch\u00ednh \u0111\u01b0\u1eddng d\u00e0i \u1ed5n \u0111\u1ecbnh<br>\u2714 R\u1ee7i ro tri\u1ec3n khai \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u<\/p><\/li>\n\n\n\n<li><p><strong>C\u00e1c h\u1ec7 th\u1ed1ng tri\u1ec3n khai MMF (th\u1ebf h\u1ec7 c\u0169 ho\u1eb7c t\u1ea7m ng\u1eafn):<\/strong><br>\u2714 Ho\u1ea1t \u0111\u1ed9ng v\u1edbi LX\/LH trong \u0111i\u1ec1u ki\u1ec7n th\u00edch h\u1ee3p<br>\u26a0 C\u00f3 th\u1ec3 c\u1ea7n s\u1eed d\u1ee5ng c\u00e1p n\u1ed1i \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9<br>\u26a0 Hi\u1ec7u su\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i s\u1ee3i<\/p><\/li>\n\n\n\n<li><p><strong>M\u1ea1ng n\u1ed9i b\u1ed9 tr\u01b0\u1eddng:<\/strong><br>\u2714 Th\u00f4ng th\u01b0\u1eddng d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 SMF v\u00e0 s\u1eed d\u1ee5ng h\u1ec7 quang h\u1ecdc LX\/LH<br>\u2714 S\u1ef1 c\u00e2n b\u1eb1ng l\u00fd t\u01b0\u1edfng gi\u1eefa chi ph\u00ed, kho\u1ea3ng c\u00e1ch v\u00e0 \u0111\u1ed9 tin c\u1eady<\/p><\/li>\n\n\n\n<li><p><strong>M\u00f4i tr\u01b0\u1eddng c\u00e1p quang truy\u1ec1n th\u1ed1ng:<\/strong><br>\u26a0 C\u1ea7n ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng OM1\/OM2<br>\u26a0 C\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng MCP \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean l\u00fd k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m quan tr\u1ecdng nh\u1ea5t c\u1ea7n ghi nh\u1edb l\u00e0:<\/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\">Hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t li\u00ean k\u1ebft 1000BASE-LX\/LH ph\u1ee5 thu\u1ed9c v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang, ch\u1ee9 kh\u00f4ng ph\u1ea3i nh\u00e3n ghi tr\u00ean m\u00f4-\u0111un SFP.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">LX v\u00e0 LH kh\u00f4ng ph\u1ea3i l\u00e0 hai c\u00f4ng ngh\u1ec7 c\u1ea1nh tranh v\u1edbi nhau \u2014 ch\u00fang l\u00e0 hai quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean cho c\u00f9ng m\u1ed9t lo\u1ea1i c\u00e1p quang Gigabit Ethernet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft lu\u1eadn cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c module 1000BASE-LX v\u00e0 1000BASE-LH:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1eebng coi ch\u00fang l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n quang h\u1ecdc kh\u00e1c nhau<\/p><\/li>\n\n\n\n<li><p>T\u1eadp trung v\u00e0o lo\u1ea1i s\u1ee3i quang, kho\u1ea3ng c\u00e1ch v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi n\u1ec1n t\u1ea3ng chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ea1n v\u00e0 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 Trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i, c\u1ea3 hai ph\u01b0\u01a1ng \u00e1n \u0111\u1ec1u s\u1ebd mang l\u1ea1i hi\u1ec7u su\u1ea5t nh\u01b0 nhau n\u1ebfu \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p ph\u00f9 h\u1ee3p v\u1edbi h\u1ea1 t\u1ea7ng c\u00e1p quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm c\u00e1c m\u00f4-\u0111un SFP 1000BASE-LX\/LH \u0111\u00e1ng tin c\u1eady v\u00e0 ho\u00e0n to\u00e0n t\u01b0\u01a1ng th\u00edch, h\u00e3y kh\u00e1m ph\u00e1 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> d\u00e0nh cho c\u00e1c b\u1ed9 thu ph\u00e1t quang \u0111\u00e3 qua ki\u1ec3m \u0111\u1ecbnh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t Gigabit Ethernet \u1ed5n \u0111\u1ecbnh trong c\u1ea3 m\u00f4i tr\u01b0\u1eddng c\u00e1p quang \u0111\u01a1n mode v\u00e0 \u0111a mode.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p SFP ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n v\u00e0 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh, hi\u1ec7u su\u1ea5t cao t\u1eeb bi\u00ean \u0111\u1ebfn l\u00f5i.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t th\u1ef1c s\u1ef1 gi\u1eefa 1000BASE-LH v\u00e0 1000BASE-LX, bao g\u1ed3m b\u01b0\u1edbc s\u00f3ng, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1p quang, c\u00e1ch \u0111\u1eb7t t\u00ean c\u1ee7a Cisco v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i.<\/p>","protected":false},"author":1,"featured_media":2429,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[15],"class_list":["post-2434","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\/2434","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=2434"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2434\/revisions"}],"predecessor-version":[{"id":10701,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2434\/revisions\/10701"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2429"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}