{"id":2700,"date":"2026-03-31T00:00:00","date_gmt":"2026-03-31T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/sfp-40km-10gbase-er-extended-reach-optical-module\/"},"modified":"2026-06-22T03:40:00","modified_gmt":"2026-06-22T03:40:00","slug":"sfp-40km-10gbase-er-extended-reach-optical-module","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/sfp-40km-10gbase-er-extended-reach-optical-module","title":{"rendered":"SFP+ 40 km (10GBASE-ER): H\u01b0\u1edbng d\u1eabn v\u1ec1 module quang t\u1ea7m xa m\u1edf r\u1ed9ng"},"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\/3273b49de0574662a3db0bad99120cd3-1024x536.jpg\" alt=\"SFP+ 40km (10GBASE-ER): Extended-Reach Optical Module Guide\" class=\"wp-image-2690\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3273b49de0574662a3db0bad99120cd3-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3273b49de0574662a3db0bad99120cd3-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3273b49de0574662a3db0bad99120cd3-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3273b49de0574662a3db0bad99120cd3-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3273b49de0574662a3db0bad99120cd3.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475581.htm\">SFP+ 40 km<\/a> (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476054.htm\">10GBASE-ER<\/a>) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn b\u1ed9 thu ph\u00e1t quang 10 Gigabit \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa l\u00ean \u0111\u1ebfn 40 kil\u00f4m\u00e9t tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF). C\u00e1c m\u00f4-\u0111un n\u00e0y th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 1550 nm, s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\">\u0111\u1ea7u n\u1ed1i LC duplex<\/a>, v\u00e0 h\u1ed7 tr\u1ee3 Gi\u00e1m s\u00e1t Quang K\u1ef9 thu\u1eadt s\u1ed1 (DOM\/DDM) \u0111\u1ec3 hi\u1ec3n th\u1ecb hi\u1ec7u su\u1ea5t theo th\u1eddi gian th\u1ef1c. Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, c\u00e1c b\u1ed9 quang SFP+ 40km \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i trong x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p, m\u1ea1ng \u0111\u00f4 th\u1ecb, li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng khu v\u1ef1c l\u01b0u tr\u1eef, n\u01a1i kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh \u1edf kho\u1ea3ng c\u00e1ch xa l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u SFP+ 40km th\u1ef1c s\u1ef1 c\u00f3 ngh\u0129a l\u00e0 g\u00ec, c\u00e1ch 10GBASE-ER so s\u00e1nh v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/477270.htm\">BX40<\/a>, v\u00e0 c\u00e1ch ch\u1ecdn m\u00f4-\u0111un ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch, t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 m\u00f4i tr\u01b0\u1eddng tri\u1ec3n khai\u2014gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt s\u00e1ng su\u1ed1t, \u1edf c\u1ea5p \u0111\u1ed9 k\u1ef9 s\u01b0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>SFP+ 40km L\u00e0 G\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SFP+ 40km l\u00e0 m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t quang 10 Gigabit \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch xa l\u00ean \u0111\u1ebfn 40 kil\u00f4m\u00e9t tr\u00ean <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/single-mode-fiber-os1-vs-os2-comparison-indoor-outdoor-use\/\">s\u1ee3i quang \u0111\u01a1n mode<\/a> (SMF). Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, thu\u1eadt ng\u1eef n\u00e0y \u0111\u1eb7c bi\u1ec7t \u00e1m ch\u1ec9 ti\u00eau chu\u1ea9n 10GBASE-ER (Extended-Reach) do IEEE x\u00e1c \u0111\u1ecbnh cho m\u1ea1ng Ethernet 10G.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, m\u1ed9t m\u00f4-\u0111un SFP+ 40km ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch truy\u1ec1n t\u00edn hi\u1ec7u quang \u1edf b\u01b0\u1edbc s\u00f3ng 1550 nm qua s\u1ee3i quang \u0111\u01a1n mode t\u1ed5n hao th\u1ea5p (th\u01b0\u1eddng l\u00e0 OS2). N\u00f3 s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i LC duplex, ngh\u0129a l\u00e0 m\u1ed9t s\u1ee3i d\u00f9ng \u0111\u1ec3 truy\u1ec1n (TX) v\u00e0 m\u1ed9t s\u1ee3i kh\u00e1c d\u00f9ng \u0111\u1ec3 nh\u1eadn (RX). V\u1edbi ng\u00e2n s\u00e1ch li\u00ean k\u1ebft quang \u0111i\u1ec3n h\u00ecnh kho\u1ea3ng 15 dB, n\u00f3 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 \u0111\u00e1ng tin c\u1eady c\u00e1c k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e0i gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">servers<\/a>, v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef.<\/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\">SFP+ 40km = m\u1ed9t m\u00f4-\u0111un quang 10GBASE-ER \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eabn 10 Gbps tr\u00ean t\u1ed1i \u0111a 40 km s\u1ee3i quang \u0111\u01a1n mode.<\/p>\n<\/blockquote>\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\/a69b844ca02a4a60a07e55e3a8361fa5.jpg\" alt=\" What Is SFP+ 40km?\" class=\"wp-image-2691\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a69b844ca02a4a60a07e55e3a8361fa5.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a69b844ca02a4a60a07e55e3a8361fa5-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a69b844ca02a4a60a07e55e3a8361fa5-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a69b844ca02a4a60a07e55e3a8361fa5-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a69b844ca02a4a60a07e55e3a8361fa5-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ed1i Li\u00ean H\u1ec7 Gi\u1eefa SFP+ 40km V\u00e0 10GBASE-ER<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>10GBASE-ER l\u00e0 ti\u00eau chu\u1ea9n Ethernet ch\u00ednh th\u1ee9c<\/p><\/li>\n\n\n\n<li><p>SFP+ 40km l\u00e0 t\u00ean th\u1ecb tr\u01b0\u1eddng ph\u1ed5 bi\u1ebfn do nh\u00e0 cung c\u1ea5p v\u00e0 k\u1ef9 s\u01b0 s\u1eed d\u1ee5ng<\/p><\/li>\n\n\n\n<li><p>Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang thu\u1ed9c c\u00f9ng m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng K\u1ebft N\u1ed1i 10G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP+ 40 km ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n m\u1edf r\u1ed9ng k\u1ebft n\u1ed1i 10G v\u01b0\u1ee3t xa kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u (10 km ho\u1eb7c \u00edt h\u01a1n). C\u00e1c t\u00ecnh hu\u1ed1ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c khu\u00f4n vi\u00ean<br><\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Li\u00ean k\u1ebft m\u1ea1ng \u0111\u00f4 th\u1ecb v\u00e0 vi\u1ec5n th\u00f4ng<br><\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Li\u00ean k\u1ebft t\u1eeb trung t\u00e2m d\u1eef li\u1ec7u \u0111\u1ebfn \u0111i\u1ec3m bi\u00ean ho\u1eb7c c\u00e1c \u0111\u1ecba \u0111i\u1ec3m ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda<br><\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p \u1edf kho\u1ea3ng c\u00e1ch xa<br><\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So v\u1edbi c\u00e1c m\u00f4-\u0111un t\u1ea7m ng\u1eafn nh\u01b0 LR (10 km), SFP+ 40 km cung c\u1ea5p gi\u1ea3i ph\u00e1p truy\u1ec1n d\u1eabn xa hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed m\u00e0 kh\u00f4ng c\u1ea7n quang h\u1ecdc \u0111\u1ed3ng pha ph\u1ee9c t\u1ea1p h\u01a1n ho\u1eb7c n\u1ec1n t\u1ea3ng t\u1ed1c \u0111\u1ed9 cao h\u01a1n.<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh c\u1ee7a SFP+ 40 km<br><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i c\u1ee7a m\u00f4-\u0111un SFP+ 40 km (10GBASE-ER) l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai \u0111\u00fang, t\u01b0\u01a1ng th\u00edch v\u00e0 \u1ed5n \u0111\u1ecbnh m\u1ea1ng d\u00e0i h\u1ea1n. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1ch b\u1ed9 thu ph\u00e1t ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf \u1edf kho\u1ea3ng c\u00e1ch xa nh\u01b0 m\u1ea1ng \u0111\u00f4 th\u1ecb v\u00e0 x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p.<br>.<\/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\/e9978f55a148478fa95fc2b7a0819142.jpg\" alt=\"SFP+ 40km Key Specifications\" class=\"wp-image-2692\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9978f55a148478fa95fc2b7a0819142.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9978f55a148478fa95fc2b7a0819142-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9978f55a148478fa95fc2b7a0819142-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9978f55a148478fa95fc2b7a0819142-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9978f55a148478fa95fc2b7a0819142-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ed5ng quan k\u1ef9 thu\u1eadt SFP+ 40 km<br><\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 214px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Gi\u1ea3i th\u00edch<br><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>25Gbps<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10 Gbps (th\u01b0\u1eddng l\u00e0 9,95\u201311,32 Gbps)<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ed7 tr\u1ee3 chu\u1ea9n Ethernet 10G v\u00e0 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng \u0111a t\u1ed1c \u0111\u1ed9<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>T\u1ea7m xa t\u1ed1i \u0111a<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 40 km<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa tr\u00ean c\u00e1p quang s\u1ee3i \u0111\u01a1n (SMF)<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p quang s\u1ee3i \u0111\u01a1n (SMF, th\u01b0\u1eddng l\u00e0 OS2)<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u \u0111\u1ec3 gi\u1ea3m suy hao th\u1ea5p tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1550 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u01b0u h\u00f3a nh\u1eb1m gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u trong truy\u1ec1n d\u1eabn xa<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>Lo\u1ea1i \u0111\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><td colspan=\"1\" rowspan=\"1\"><p>S\u1eed d\u1ee5ng hai s\u1ee3i c\u00e1p: m\u1ed9t cho truy\u1ec1n (TX), m\u1ed9t cho nh\u1eadn (RX)<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>Ng\u00e2n s\u00e1ch li\u00ean k\u1ebft quang (Optical Link Budget)<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng 14\u201315 dB<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c \u0111\u1ecbnh t\u1ed5ng m\u1ee9c suy hao cho ph\u00e9p tr\u00ean to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u01b0\u1edbi 1,5 W (th\u00f4ng th\u01b0\u1eddng)<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>H\u1ed7 tr\u1ee3 gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 (DOM\/DDM)<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cho ph\u00e9p gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c \u0111i\u1ec7n \u00e1p, nhi\u1ec7t \u0111\u1ed9, c\u00f4ng su\u1ea5t TX\/RX<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p><strong>D\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0\u00b0C \u0111\u1ebfn 70\u00b0C (<br><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476852.htm\">Th\u01b0\u01a1ng m\u1ea1i<br><\/a>) \/ -40\u00b0C \u0111\u1ebfn 85\u00b0C (<br><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476854.htm\">C\u00f4ng nghi\u1ec7p<\/a>)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c phi\u00ean b\u1ea3n c\u00f4ng nghi\u1ec7p (ER-I) h\u1ed7 tr\u1ee3 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<br><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd quan tr\u1ecdng khi tri\u1ec3n khai 10GBASE-ER<br><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-1550nm-optical-transceiver\/\" target=\"_blank\" rel=\"\"><strong>B\u01b0\u1edbc s\u00f3ng 1550 nm<br><\/strong><\/a><strong> + SMF (OS2)<br><\/strong> l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c truy\u1ec1n d\u1eabn \u1ed5n \u0111\u1ecbnh \u1edf kho\u1ea3ng c\u00e1ch 40 km. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p quang \u0111a mode (OM3\/OM4) s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u1edf kho\u1ea3ng c\u00e1ch n\u00e0y.<br>.<\/p><\/li>\n\n\n\n<li><p>The <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/power-budget-importance-calculation-management-for-devices\/\" target=\"_blank\" rel=\"\"><strong>Ng\u00e2n s\u00e1ch quang (optical budget)<br><\/strong><\/a><strong> (kho\u1ea3ng 15 dB)<br><\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u2014 c\u00e1c \u0111\u1ea7u n\u1ed1i, m\u1ed1i n\u1ed1i v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e1p quang \u0111\u1ec1u ph\u1ea3i n\u1eb1m trong gi\u1edbi h\u1ea1n suy hao n\u00e0y.<br>.<\/p><\/li>\n\n\n\n<li><p><strong>H\u1ed7 tr\u1ee3 DOM\/DDM<\/strong> r\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb cao trong c\u00e1c m\u1ea1ng s\u1ea3n xu\u1ea5t, cho ph\u00e9p k\u1ef9 s\u01b0 gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng li\u00ean k\u1ebft v\u00e0 d\u1ef1 \u0111o\u00e1n s\u1ef1 c\u1ed1.<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed1i v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng ngo\u00e0i tr\u1eddi ho\u1eb7c c\u00f4ng nghi\u1ec7p, vi\u1ec7c ch\u1ecdn module nhi\u1ec7t \u0111\u1ed9 m\u1edf r\u1ed9ng (ER-I) \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9<\/strong>SFP+ 40 km so v\u1edbi 10GBASE-ER so v\u1edbi BX40<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u00ecm ki\u1ebfm SFP+ 40 km, ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng so s\u00e1nh 10GBASE-ER (s\u1ee3i quang duplex) v\u1edbi BX40 (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477205.htm\">\u0111\u01a1n s\u1ee3i hai chi\u1ec1u<\/a>). M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eabn l\u00ean \u0111\u1ebfn 40 km tr\u00ean s\u1ee3i quang ch\u1ebf \u0111\u1ed9 \u0111\u01a1n, ch\u00fang kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 c\u00e1ch s\u1eed d\u1ee5ng s\u1ee3i quang, t\u00ednh linh ho\u1ea1t tri\u1ec3n khai v\u00e0 c\u1ea5u tr\u00fac chi ph\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 l\u1ef1a ch\u1ecdn module ph\u00f9 h\u1ee3p v\u1edbi ki\u1ebfn tr\u00fac m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7.jpg\" alt=\"SFP+ 40km vs. 10GBASE-ER vs. BX40\" class=\"wp-image-2693\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a142fbc33a8e4112bcef5c2baedd45b7-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">So s\u00e1nh nhanh: ER so v\u1edbi BX40<\/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><strong>SFP+ 40 km (10GBASE-ER)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477270.htm\"><strong>SFP+ BX40<\/strong><\/a><strong> (BiDi)<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i truy\u1ec1n d\u1eabn<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hai s\u1ee3i (duplex)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ed9t s\u1ee3i (hai chi\u1ec1u)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Y\u00eau c\u1ea7u s\u1ee3i quang<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2 s\u1ee3i (TX + RX)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1 s\u1ee3i (chung TX\/RX)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1550 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc s\u00f3ng gh\u00e9p \u0111\u00f4i (v\u00ed d\u1ee5: 1270 nm \/ 1330 nm)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC Duplex<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC \u0111\u01a1n h\u01b0\u1edbng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ea7m xa t\u1ed1i \u0111a<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 40 km<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 40 km<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p tri\u1ec3n khai<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n gi\u1ea3n, c\u1eafm v\u00e0o l\u00e0 ch\u1ea1y<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u c\u1eb7p module t\u01b0\u01a1ng th\u00edch (module A\/B)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u1ea5u tr\u00fac chi ph\u00ed<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed module th\u1ea5p h\u01a1n, nh\u01b0ng ti\u00eau t\u1ed1n nhi\u1ec1u s\u1ee3i quang h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed module cao h\u01a1n, nh\u01b0ng ti\u1ebft ki\u1ec7m h\u1ea1 t\u1ea7ng s\u1ee3i quang<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch xa ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00f4i tr\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n v\u1ec1 s\u1ee3i quang<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">10GBASE-ER l\u00e0 g\u00ec trong so s\u00e1nh n\u00e0y?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>10GBASE-ER l\u00e0 ti\u00eau chu\u1ea9n ch\u00ednh th\u1ee9c c\u1ee7a IEEE<\/p><\/li>\n\n\n\n<li><p>SFP+ 40 km l\u00e0 t\u00ean th\u1ecb tr\u01b0\u1eddng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/p><\/li>\n\n\n\n<li><p>Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, ch\u00fang \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00f9ng m\u1ed9t gi\u1ea3i ph\u00e1p duplex b\u01b0\u1edbc s\u00f3ng 1550 nm<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i c\u00e1ch kh\u00e1c: N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng hai s\u1ee3i quang v\u00e0 b\u1ed9 quang h\u1ecdc b\u01b0\u1edbc s\u00f3ng 1550 nm, th\u00ec b\u1ea1n \u0111ang s\u1eed d\u1ee5ng 10GBASE-ER (SFP+ 40 km).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o n\u00ean ch\u1ecdn SFP+ 40 km (10GBASE-ER)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y ch\u1ecdn module ER n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n \u0111\u00e3 c\u00f3 h\u1ea1 t\u1ea7ng s\u1ee3i quang ch\u1ebf \u0111\u1ed9 \u0111\u01a1n (SMF) duplex<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n mu\u1ed1n tri\u1ec3n khai v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1 \u0111\u01a1n gi\u1ea3n h\u01a1n<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n \u01b0u ti\u00ean chi ph\u00ed module th\u1ea5p h\u01a1n<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng c\u1ee7a b\u1ea1n \u01b0u ti\u00ean t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 chu\u1ea9n h\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1ea5t cho doanh nghi\u1ec7p v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\">k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o n\u00ean ch\u1ecdn BX40 (BiDi)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y ch\u1ecdn BX40 n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ngu\u1ed3n l\u1ef1c s\u1ee3i quang b\u1ecb h\u1ea1n ch\u1ebf ho\u1eb7c \u0111\u1eaft \u0111\u1ecf<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n c\u1ea7n t\u0103ng g\u1ea5p \u0111\u00f4i dung l\u01b0\u1ee3ng tr\u00ean s\u1ee3i quang hi\u1ec7n c\u00f3<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd c\u00e1c b\u1ed9 quang h\u1ecdc gh\u00e9p \u0111\u00f4i (ph\u00f9 h\u1ee3p b\u01b0\u1edbc s\u00f3ng TX\/RX)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">BX40 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng truy nh\u1eadp \u0111\u00f4 th\u1ecb (metro access), n\u01a1i kh\u1ea3 n\u0103ng cung c\u1ea5p s\u1ee3i quang b\u1ecb gi\u1edbi h\u1ea1n.<\/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\">S\u1eed d\u1ee5ng 10GBASE-ER (SFP+ 40 km) \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a v\u00e0 tri\u1ec3n khai theo ti\u00eau chu\u1ea9n.<br>S\u1eed d\u1ee5ng BX40 <a href=\"https:\/\/www.l-p.com\/products\/476215.htm\" target=\"_self\">SFP+ BiDi<\/a> khi s\u1ee3i quang b\u1ecb h\u1ea1n ch\u1ebf v\u00e0 b\u1ea1n c\u1ea7n hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng s\u1ee3i \u0111\u01a1n.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng SFP+ 40 km<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP+ 40 km (10GBASE-ER) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c t\u00ecnh hu\u1ed1ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i 10G \u0111\u00e1ng tin c\u1eady \u1edf kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t xa kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh trong trung t\u00e2m d\u1eef li\u1ec7u. Kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eabn l\u00ean \u0111\u1ebfn 40 km tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF) khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh th\u00e0nh ph\u1ea7n then ch\u1ed1t trong c\u1ea3 m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 vi\u1ec5n th\u00f4ng.<\/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\/13326f8b53444a8d98acbf3b33fffaea.jpg\" alt=\"Where SFP+ 40km Is Used\" class=\"wp-image-2694\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/13326f8b53444a8d98acbf3b33fffaea.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/13326f8b53444a8d98acbf3b33fffaea-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/13326f8b53444a8d98acbf3b33fffaea-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/13326f8b53444a8d98acbf3b33fffaea-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/13326f8b53444a8d98acbf3b33fffaea-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng tri\u1ec3n khai th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft n\u1ed1i n\u1ed9i b\u1ed9 doanh nghi\u1ec7p (m\u1ea1ng khu\u00f4n vi\u00ean &amp; \u0111a \u0111\u1ecba \u0111i\u1ec3m)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c doanh nghi\u1ec7p l\u1edbn th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng tr\u00ean nhi\u1ec1u t\u00f2a nh\u00e0 ho\u1eb7c nhi\u1ec1u khu\u00f4n vi\u00ean. C\u00e1c module SFP+ 40 km cho ph\u00e9p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i n\u1ec1n t\u1ea3ng t\u1ed1c \u0111\u1ed9 cao 10G gi\u1eefa c\u00e1c \u0111\u1ecba \u0111i\u1ec3m<\/p><\/li>\n\n\n\n<li><p>Duy tr\u00ec li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh xuy\u00ean su\u1ed1t c\u00e1c khu c\u00f4ng nghi\u1ec7p ho\u1eb7c khu\u00f4n vi\u00ean doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>Truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u an to\u00e0n m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u01b0\u1eddng thu\u00ea ri\u00eang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd t\u01b0\u1edfng cho c\u00e1c t\u1ed5 ch\u1ee9c c\u1ea7n k\u1ebft n\u1ed1i ri\u00eang t\u01b0, b\u0103ng th\u00f4ng cao tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea1ng \u0111\u00f4 th\u1ecb (MAN \/ c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-metropolitan-area-network\/\">\u2462 ZX SFP<\/a> (MAN), SFP+ 40 km \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i c\u00e1c switch t\u1eadp h\u1ee3p v\u00e0 c\u00e1c n\u00fat truy c\u1eadp<\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 \u0111\u01b0\u1eddng truy\u1ec1n ng\u01b0\u1ee3c (backhaul) vi\u1ec5n th\u00f4ng v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p truy\u1ec1n d\u1eabn Ethernet t\u1ea7m xa m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ed5 bi\u1ebfn trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-an-isp-internet-service-provider\/\">However, many beginners are confused by common questions such as:<\/a> m\u1ea1ng, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-5g-backhaul\/\">\u0111\u01b0\u1eddng truy\u1ec1n ng\u01b0\u1ee3c 5G<\/a>, v\u00e0 c\u00e1c tri\u1ec3n khai c\u00e1p quang tr\u00ean to\u00e0n th\u00e0nh ph\u1ed1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea1ng di\u1ec7n t\u00edch l\u01b0u tr\u1eef (SAN)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p x\u1eed l\u00fd kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, SFP+ 40 km \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c trang tr\u1ea1i ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda (DR) \u0111\u1eb7t c\u00e1ch xa h\u00e0ng ch\u1ee5c kil\u00f4m\u00e9t<\/p><\/li>\n\n\n\n<li><p>Sao ch\u00e9p d\u1eef li\u1ec7u gi\u1eefa h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef ch\u00ednh v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef d\u1ef1 ph\u00f2ng<\/p><\/li>\n\n\n\n<li><p>M\u1edf r\u1ed9ng Fibre Channel qua Ethernet (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fibre-channel-over-ethernet-fcoe-modern-data-centers\/\" target=\"_blank\" rel=\"\">FCoE<\/a>) ho\u1eb7c c\u00e1c li\u00ean k\u1ebft l\u01b0u tr\u1eef IP<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o <strong>t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 t\u00ednh li\u00ean t\u1ee5c kinh doanh<\/strong> tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Li\u00ean k\u1ebft switch\u2013switch t\u1ea7m xa<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP+ 40 km th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c switch l\u00f5i\u2013l\u00f5i ho\u1eb7c l\u00f5i\u2013ph\u00e2n ph\u1ed1i<\/p><\/li>\n\n\n\n<li><p>M\u1edf r\u1ed9ng ph\u1ea1m vi m\u1ea1ng v\u01b0\u1ee3t qu\u00e1 10 km (gi\u1edbi h\u1ea1n c\u1ee7a module LR)<\/p><\/li>\n\n\n\n<li><p>X\u00e2y d\u1ef1ng c\u00e1c li\u00ean k\u1ebft n\u1ec1n t\u1ea3ng c\u00f3 dung l\u01b0\u1ee3ng cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0 l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p tr\u1ef1c ti\u1ebfp khi <strong>c\u00e1c module LR kh\u00f4ng c\u00f2n \u0111\u1ee7 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) &amp; k\u1ebft n\u1ed1i bi\u00ean<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trung t\u00e2m d\u1eef li\u1ec7u ch\u00ednh \u0111\u1ebfn c\u00e1c c\u01a1 s\u1edf bi\u00ean ho\u1eb7c khu v\u1ef1c<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u00e1m m\u00e2y \u0111\u1ebfn c\u00e1c \u0111\u1ecba \u0111i\u1ec3m doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>C\u00e1c c\u01a1 s\u1edf \u0111\u1eb7t chung (colocation) tr\u00ean kh\u1eafp c\u00e1c th\u00e0nh ph\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SFP+ 40 km cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf ti\u1ebft ki\u1ec7m chi ph\u00ed cho c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc \u0111\u01b0\u1eddng d\u00e0i ph\u1ee9c t\u1ea1p h\u01a1n khi kho\u1ea3ng c\u00e1ch n\u1eb1m trong ph\u1ea1m vi 40 km.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y lai, \u0111i\u1ec7n to\u00e1n bi\u00ean v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u ph\u00e2n t\u00e1n<\/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\">SFP+ 40 km l\u00e0 gi\u1ea3i ph\u00e1p \u01b0u ti\u00ean \u0111\u1ec3 m\u1edf r\u1ed9ng m\u1ea1ng 10G tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch quy m\u00f4 th\u00e0nh ph\u1ed1, l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc ng\u1eafn h\u1ea1n trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>C\u00e1ch ch\u1ecdn module SFP+ 40 km ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn module SFP+ 40 km (10GBASE-ER) ph\u00f9 h\u1ee3p kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 kh\u1edbp v\u1edbi kho\u1ea3ng c\u00e1ch \u2014 m\u00e0 c\u00f2n \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\">t\u01b0\u01a1ng th\u00edch<\/a>, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang v\u00e0 \u0111i\u1ec1u ki\u1ec7n tri\u1ec3n khai th\u1ef1c t\u1ebf. M\u1ed9t l\u1ef1a ch\u1ecdn sai c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i li\u00ean k\u1ebft, hi\u1ec7u n\u0103ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c chi ph\u00ed kh\u00f4ng c\u1ea7n thi\u1ebft.<\/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\/b7e34d99062f40ab97ec7121e7912f44.jpg\" alt=\"How to Choose the Right SFP+ 40km Module\" class=\"wp-image-2695\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7e34d99062f40ab97ec7121e7912f44.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7e34d99062f40ab97ec7121e7912f44-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7e34d99062f40ab97ec7121e7912f44-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7e34d99062f40ab97ec7121e7912f44-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b7e34d99062f40ab97ec7121e7912f44-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch ki\u1ec3m tra th\u1ef1c ti\u1ec5n, t\u1eadp trung v\u00e0o k\u1ef9 s\u01b0, nh\u1eb1m gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra khi mua SFP+ 40 km<\/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>Y\u1ebfu t\u1ed1<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u1ea7n ki\u1ec3m tra nh\u1eefng g\u00ec<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>V\u00ec sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong><p>MEDIUM-HIGH<\/p><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c minh h\u1ed7 tr\u1ee3 t\u1eeb nh\u00e0 cung c\u1ea5p (Cisco, Juniper, HPE, v.v.) v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ng\u0103n ch\u1eb7n vi\u1ec7c module b\u1ecb t\u1eeb ch\u1ed1i ho\u1eb7c c\u1ed5ng b\u1ecb t\u1eaft<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o <strong>s\u1ee3i quang \u0111\u01a1n mode (OS2)<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 truy\u1ec1n d\u1eabn \u1edf kho\u1ea3ng c\u00e1ch 40 km; s\u1ee3i \u0111a mode (MMF) s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kho\u1ea3ng c\u00e1ch tri\u1ec3n khai<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c nh\u1eadn chi\u1ec1u d\u00e0i li\u00ean k\u1ebft th\u1ef1c t\u1ebf (v\u00ed d\u1ee5: 10 km, 25 km, 40 km)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tr\u00e1nh c\u00e1c module c\u00f3 th\u00f4ng s\u1ed1 v\u01b0\u1ee3t m\u1ee9c ho\u1eb7c hi\u1ec7u n\u0103ng k\u00e9m h\u01a1n y\u00eau c\u1ea7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ng\u00e2n s\u00e1ch li\u00ean k\u1ebft quang (Optical Link Budget)<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m tra t\u1ed5ng t\u1ed5n hao (suy hao s\u1ee3i quang + \u0111\u1ea7u n\u1ed1i + m\u1ed1i n\u1ed1i \u2264 ~15 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1edbp <strong>LC hai chi\u1ec1u<\/strong> c\u1ed5ng \u1edf c\u1ea3 hai \u0111\u1ea7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ng\u0103n ng\u1eeba s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t v\u1eadt l\u00fd<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ecdn c\u00e1c module \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a \u0111\u00fang c\u00e1ch ho\u1eb7c t\u01b0\u01a1ng th\u00edch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng \u201cc\u1eafm v\u00e0o l\u00e0 d\u00f9ng \u0111\u01b0\u1ee3c\u201d v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ea1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u01a1ng m\u1ea1i (0\u201370\u00b0C) ho\u1eb7c C\u00f4ng nghi\u1ec7p (-40\u201385\u00b0C)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi ho\u1eb7c kh\u1eafc nghi\u1ec7t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>DOM\/DDM<\/strong><\/a><strong> H\u1ed7 tr\u1ee3<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>X\u00e1c nh\u1eadn c\u00e1c t\u00ednh n\u0103ng gi\u00e1m s\u00e1t \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n v\u00e0 b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t \/ Ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u1eddng &lt;1,5 W; ki\u1ec3m tra gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t c\u1ee7a c\u1ed5ng b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai m\u1eadt \u0111\u1ed9 cao<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Logic l\u1ef1a ch\u1ecdn t\u1eebng b\u01b0\u1edbc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1eaft \u0111\u1ea7u v\u1edbi kho\u1ea3ng c\u00e1ch v\u00e0 ki\u1ebfn tr\u00fac m\u1ea1ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u226410 km \u2192 c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng module LR thay th\u1ebf<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ebfn 40 km \u2192 SFP+ 40 km (10GBASE-ER) l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang h\u1ea1n ch\u1ebf \u2192 c\u00e2n nh\u1eafc l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p BX40 (s\u1ee3i \u0111\u01a1n) thay th\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>X\u00e1c minh c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea3i l\u00e0 s\u1ee3i quang \u0111\u01a1n mode OS2<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra m\u1ee9c suy hao hi\u1ec7n c\u00f3 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i n\u1ed1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>X\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi switch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra xem switch c\u1ee7a b\u1ea1n c\u00f3 y\u00eau c\u1ea7u module \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1edfi nh\u00e0 cung c\u1ea5p hay kh\u00f4ng<\/p><\/li>\n\n\n\n<li><p>T\u00ecm c\u00e1c t\u00f9y ch\u1ecdn tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA ho\u1eb7c <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/third-party-sfp-cost-compatibility-guide\/\" target=\"_blank\" rel=\"\">b\u00ean th\u1ee9 ba<\/a> t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trung t\u00e2m d\u1eef li\u1ec7u trong nh\u00e0 \u2192 nhi\u1ec7t \u0111\u1ed9 th\u01b0\u01a1ng m\u1ea1i l\u00e0 ph\u00f9 h\u1ee3p<\/p><\/li>\n\n\n\n<li><p>Ngo\u00e0i tr\u1eddi \/ c\u00f4ng nghi\u1ec7p \u2192 ch\u1ecdn lo\u1ea1i ER-I (c\u1ea5p c\u00f4ng nghi\u1ec7p)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>X\u00e1c th\u1ef1c ng\u00e2n s\u00e1ch quang h\u1ecdc<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o t\u1ed5ng t\u1ed5n hao \u0111\u01b0\u1eddng truy\u1ec1n n\u1eb1m trong kho\u1ea3ng ~14\u201315 dB<\/p><\/li>\n\n\n\n<li><p>Bao g\u1ed3m \u0111\u1ea7u n\u1ed1i, b\u1ea3ng \u0111\u1ea5u n\u1ed1i v\u00e0 d\u1ef1 ph\u00f2ng cho suy hao do l\u00e3o h\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi l\u1ef1a ch\u1ecdn c\u1ea7n tr\u00e1nh<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u274c S\u1eed d\u1ee5ng s\u1ee3i \u0111a mode (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-om3-vs-om4\/\" target=\"_blank\" rel=\"\">OM3\/OM4<\/a>) \u2192 s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u1edf kho\u1ea3ng c\u00e1ch 40 km<\/p><\/li>\n\n\n\n<li><p>\u274c B\u1ecf qua c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi switch<\/p><\/li>\n\n\n\n<li><p>\u274c Kh\u00f4ng ch\u00fa \u00fd \u0111\u1ebfn t\u1ed5n hao \u0111\u01b0\u1eddng truy\u1ec1n (\u0111\u1eb7c bi\u1ec7t tr\u00ean s\u1ee3i quang c\u0169)<\/p><\/li>\n\n\n\n<li><p>\u274c L\u1ef1a ch\u1ecdn <a href=\"https:\/\/www.l-p.com\/products\/477946.htm\" target=\"_self\">ER<\/a> trong khi BX40 c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m t\u00e0i nguy\u00ean s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>\u274c B\u1ecf qua ch\u1ee9c n\u0103ng DOM\/DDM, khi\u1ebfn vi\u1ec7c g\u1ee1 l\u1ed7i tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n v\u1ec1 sau<\/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\">Ch\u1ecdn module SFP+ 40 km (10GBASE-ER) khi b\u1ea1n c\u1ea7n truy\u1ec1n d\u1eabn 10G \u1ed5n \u0111\u1ecbnh, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n tr\u00ean kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a 40 km b\u1eb1ng s\u1ee3i \u0111\u01a1n mode duplex \u2014 v\u00e0 lu\u00f4n x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch c\u0169ng nh\u01b0 ng\u00e2n s\u00e1ch quang h\u1ecdc tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c module SFP+ 40 km (10GBASE-ER) tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh, nh\u01b0ng trong tri\u1ec3n khai th\u1ef1c t\u1ebf th\u01b0\u1eddng g\u1eb7p c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c hi\u1ec7u su\u1ea5t kh\u00f4ng \u1ed5n \u0111\u1ecbnh. Ph\u1ea7n l\u1edbn c\u00e1c s\u1ef1 c\u1ed1 n\u00e0y kh\u00f4ng xu\u1ea5t ph\u00e1t t\u1eeb ch\u00ednh module m\u00e0 do c\u1ea5u h\u00ecnh kh\u00f4ng kh\u1edbp, gi\u1edbi h\u1ea1n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng ho\u1eb7c h\u1ea1n ch\u1ebf t\u1eeb nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb.<\/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\/37a707d76fc84c19852366b1474dc081.jpg\" alt=\"Common Compatibility Problems and How to Avoid Them\" class=\"wp-image-2696\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37a707d76fc84c19852366b1474dc081.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37a707d76fc84c19852366b1474dc081-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37a707d76fc84c19852366b1474dc081-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37a707d76fc84c19852366b1474dc081-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/37a707d76fc84c19852366b1474dc081-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t \u2014 v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u00f3a nh\u00e0 cung c\u1ea5p switch (module kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1eb7c b\u1ecb t\u1eeb ch\u1ed1i)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb m\u1ea1ng (v\u00ed d\u1ee5: Cisco, HPE, Juniper) \u00e1p d\u1ee5ng ki\u1ec3m tra m\u00e3 h\u00f3a theo nh\u00e0 cung c\u1ea5p, c\u00f3 th\u1ec3 t\u1eeb ch\u1ed1i module c\u1ee7a b\u00ean th\u1ee9 ba ho\u1eb7c kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477954.htm\">m\u00f4-\u0111un SFP+<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \u201ctransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c<\/p><\/li>\n\n\n\n<li><p>C\u1ea3nh b\u00e1o trong CLI ho\u1eb7c nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng module <a href=\"https:\/\/www.l-p.com\/products\/477947.htm\" target=\"_self\">t\u01b0\u01a1ng th\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a theo nh\u00e0 cung c\u1ea5p<\/a><\/p><\/li>\n\n\n\n<li><p>Ch\u1ecdn nh\u00e0 cung c\u1ea5p tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA v\u1edbi h\u1ed3 s\u01a1 t\u01b0\u01a1ng th\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh danh s\u00e1ch h\u1ed7 tr\u1ee3 tr\u01b0\u1edbc khi mua<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y th\u1ea5t b\u1ea1i khi tri\u1ec3n khai<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B\u01b0\u1edbc s\u00f3ng kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1eb7c kh\u00f4ng kh\u1edbp<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>C\u00e1c m\u00f4-\u0111un SFP+ 40 km th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 1550 nm, trong khi c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf nh\u01b0 BX40 s\u1eed d\u1ee5ng c\u1eb7p b\u01b0\u1edbc s\u00f3ng (1270\/1330 nm). Vi\u1ec7c k\u1ebft h\u1ee3p sai s\u1ebd l\u00e0m h\u1ecfng li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t RX hi\u1ec3n th\u1ecb b\u1eb1ng kh\u00f4ng ho\u1eb7c r\u1ea5t th\u1ea5p<\/p><\/li>\n\n\n\n<li><p>C\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n l\u1eabn nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t chu\u1ea9n (ER \u2194 ER)<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed1i v\u1edbi BX40, lu\u00f4n s\u1eed d\u1ee5ng c\u1eb7p A\/B t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra k\u1ef9 th\u00f4ng s\u1ed1 b\u01b0\u1edbc s\u00f3ng tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Lo\u1ea1i c\u00e1p quang sai (SMF so v\u1edbi MMF)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>SFP+ 40 km y\u00eau c\u1ea7u c\u00e1p quang \u0111\u01a1n mode (OS2). Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p quang \u0111a mode (OM3\/OM4) s\u1ebd g\u00e2y suy hao t\u00edn hi\u1ec7u v\u00e0 l\u00e0m h\u1ecfng li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 li\u00ean k\u1ebft ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>R\u1ea5t cao <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/attenuation-in-optical-transceiver-management-and-solutions\/\" target=\"_blank\" rel=\"\">suy hao<\/a><\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft ng\u1eaft khi ch\u1ecbu t\u1ea3i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lu\u00f4n x\u00e1c nh\u1eadn \u0111\u00e3 tri\u1ec3n khai c\u00e1p quang \u0111\u01a1n mode (OS2)<\/p><\/li>\n\n\n\n<li><p>G\u1eafn nh\u00e3n r\u00f5 r\u00e0ng lo\u1ea1i c\u00e1p quang trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh tr\u1ed9n d\u00e2y n\u1ed1i (MMF so v\u1edbi SMF)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">D\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t quang h\u1ecdc kh\u00f4ng \u0111\u1ee7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>Ngay c\u1ea3 khi kho\u1ea3ng c\u00e1ch n\u1eb1m trong ph\u1ea1m vi 40 km, suy hao qu\u00e1 m\u1ee9c do \u0111\u1ea7u n\u1ed1i, m\u1ed1i n\u1ed1i ho\u1eb7c c\u00e1p quang ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m v\u1eabn c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t (~14\u201315 dB) c\u1ee7a m\u00f4-\u0111un.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft ng\u1eaft ng\u1eaft qu\u00e3ng<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t quang RX th\u1ea5p<\/p><\/li>\n\n\n\n<li><p>Cao<br> <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\" target=\"_blank\" rel=\"\">t\u1ef7 l\u1ec7 l\u1ed7i bit<br><\/a> ho\u1eb7c m\u1ea5t g\u00f3i tin<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh to\u00e1n t\u1ed5ng suy hao li\u00ean k\u1ebft tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3m thi\u1ec3u s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u n\u1ed1i v\u00e0 m\u1ed1i n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng c\u00e1p quang ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 <a href=\"https:\/\/www.l-p.com\/blog\/knowledge-center\/how-to-clean-fiber-optic-connectors.htm\" target=\"_blank\" rel=\"\">l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i<\/a><\/p><\/li>\n\n\n\n<li><p>D\u1ef1 tr\u1eef dung sai cho y\u1ebfu t\u1ed1 l\u00e3o h\u00f3a v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">H\u1ea1n ch\u1ebf ho\u1eb7c hi\u1ec3u sai v\u1ec1 DOM\/DDM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>M\u1eb7c d\u00f9 h\u1ea7u h\u1ebft m\u00f4-\u0111un SFP+ 40 km h\u1ed7 tr\u1ee3 Gi\u00e1m s\u00e1t Quang h\u1ecdc K\u1ef9 thu\u1eadt s\u1ed1 (DOM\/DDM), kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c switch \u0111\u1ec1u hi\u1ec3n th\u1ecb ho\u1eb7c di\u1ec5n gi\u1ea3i d\u1eef li\u1ec7u n\u00e0y m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00e1 tr\u1ecb TX\/RX thi\u1ebfu ho\u1eb7c kh\u00f4ng ch\u00ednh x\u00e1c<\/p><\/li>\n\n\n\n<li><p>D\u1eef li\u1ec7u gi\u00e1m s\u00e1t kh\u00f4ng nh\u1ea5t qu\u00e1n<\/p><\/li>\n\n\n\n<li><p>Kh\u00f3 ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn h\u1ed7 tr\u1ee3 DOM\/DDM tr\u00ean c\u1ea3 m\u00f4-\u0111un v\u00e0 switch<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng phi\u00ean b\u1ea3n firmware\/ph\u1ea7n m\u1ec1m t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec3u r\u00f5 d\u1ea3i c\u00f4ng su\u1ea5t quang h\u1ecdc cho ph\u00e9p<\/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\">Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 SFP+ 40 km c\u00f3 th\u1ec3 ph\u00f2ng tr\u00e1nh \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch, lo\u1ea1i c\u00e1p quang, b\u01b0\u1edbc s\u00f3ng v\u00e0 d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t quang h\u1ecdc tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra 10GBASE-ER<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra \u0111\u00fang c\u00e1ch l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o li\u00ean k\u1ebft SFP+ 40 km (10GBASE-ER) ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i. Ngay c\u1ea3 c\u00e1c m\u00f4-\u0111un ch\u1ea5t l\u01b0\u1ee3ng cao c\u0169ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i n\u1ebfu quy tr\u00ecnh l\u1eafp \u0111\u1eb7t k\u00e9m ho\u1eb7c b\u1ecf qua c\u00e1c b\u01b0\u1edbc x\u00e1c th\u1ef1c.<\/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\/e2a6061917b749a69413cb48b3655d53.jpg\" alt=\"Best Practices for 10GBASE-ER Installation and Testing\" class=\"wp-image-2697\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e2a6061917b749a69413cb48b3655d53.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e2a6061917b749a69413cb48b3655d53-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e2a6061917b749a69413cb48b3655d53-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e2a6061917b749a69413cb48b3655d53-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e2a6061917b749a69413cb48b3655d53-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh, do k\u1ef9 s\u01b0 m\u1ea1ng \u00e1p d\u1ee5ng trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 Ch\u00e8n v\u00e0 x\u1eed l\u00fd m\u00f4-\u0111un m\u1ed9t c\u00e1ch an to\u00e0n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea9y nh\u1eb9 m\u00f4-\u0111un SFP+ v\u00e0o c\u1ed5ng switch cho \u0111\u1ebfn khi nghe ti\u1ebfng \u201cc\u1ea1ch\u201d<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o \u0111\u1ea7u n\u1ed1i LC kh\u1edbp \u0111\u00fang chi\u1ec1u TX \u2194 RX<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh c\u1eafm\/nh\u62d4 n\u00f3ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i v\u00ec c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ed5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>Vi\u1ec7c ch\u00e8n kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng c\u1ed5ng ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh, \u0111\u1eb7c bi\u1ec7t tr\u00ean c\u00e1c switch m\u1eadt \u0111\u1ed9 cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 Lu\u00f4n l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 l\u00e0m s\u1ea1ch s\u1ee3i quang (kh\u0103n lau kh\u00f4ng x\u01a1, b\u00fat l\u00e0m s\u1ea1ch) tr\u01b0\u1edbc khi c\u1eafm<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i b\u1eb1ng k\u00ednh hi\u1ec3n vi s\u1ee3i quang n\u1ebfu c\u00f3 s\u1eb5n<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng bao gi\u1edd ch\u1ea1m tr\u1ef1c ti\u1ebfp v\u00e0o m\u1eb7t cu\u1ed1i s\u1ee3i quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>B\u1ee5i ho\u1eb7c nhi\u1ec5m b\u1ea9n l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y suy hao t\u00edn hi\u1ec7u quang, \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa \u1edf b\u01b0\u1edbc s\u00f3ng 1550 nm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 X\u00e1c minh vi\u1ec7c c\u0103n ch\u1ec9nh s\u1ee3i quang TX\/RX<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o TX (ph\u00e1t) \u1edf \u0111\u1ea7u n\u00e0y n\u1ed1i v\u1edbi RX (thu) \u1edf \u0111\u1ea7u kia<\/p><\/li>\n\n\n\n<li><p>N\u1ebfu kh\u00f4ng ph\u00e1t hi\u1ec7n th\u1ea5y li\u00ean k\u1ebft, h\u00e3y th\u1eed ho\u00e1n \u0111\u1ed5i hai s\u1ee3i quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>Sai c\u1ef1c t\u00ednh l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u01a1n gi\u1ea3n nh\u01b0ng ph\u1ed5 bi\u1ebfn, d\u1eabn \u0111\u1ebfn vi\u1ec7c kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c li\u00ean k\u1ebft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 Th\u1ef1c hi\u1ec7n x\u00e1c th\u1ef1c li\u00ean k\u1ebft sau khi l\u1eafp \u0111\u1eb7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra \u0111\u00e8n tr\u1ea1ng th\u00e1i li\u00ean k\u1ebft (LED) tr\u00ean c\u1ea3 hai thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng l\u1ec7nh CLI (v\u00ed d\u1ee5:, <code>show interface transceiver<\/code>) \u0111\u1ec3 x\u00e1c minh vi\u1ec7c ph\u00e1t hi\u1ec7n m\u00f4-\u0111un<\/p><\/li>\n\n\n\n<li><p>X\u00e1c nh\u1eadn t\u1ed1c \u0111\u1ed9 = 10G v\u00e0 li\u00ean k\u1ebft = up<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>Vi\u1ec7c x\u00e1c th\u1ef1c ngay l\u1eadp t\u1ee9c \u0111\u1ea3m b\u1ea3o r\u1eb1ng <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477945.htm\">m\u00f4-\u0111un 10G-ER<\/a> \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 Gi\u00e1m s\u00e1t c\u00f4ng su\u1ea5t quang b\u1eb1ng DOM\/DDM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t (TX), c\u00f4ng su\u1ea5t thu (RX), <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceivers-operating-temperature-range\/\" target=\"_blank\" rel=\"\">nhi\u1ec7t \u0111\u1ed9<br><\/a>, v\u00e0 \u0111i\u1ec7n \u00e1p<\/p><\/li>\n\n\n\n<li><p>So s\u00e1nh c\u00e1c gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c v\u1edbi d\u1ea3i gi\u00e1 tr\u1ecb do nh\u00e0 cung c\u1ea5p quy \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>Ghi l\u1ea1i c\u00e1c gi\u00e1 tr\u1ecb c\u01a1 s\u1edf \u0111\u1ec3 ph\u1ee5c v\u1ee5 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>DOM\/DDM cung c\u1ea5p kh\u1ea3 n\u0103ng quan s\u00e1t th\u1eddi gian th\u1ef1c v\u1ec1 t\u00ecnh tr\u1ea1ng li\u00ean k\u1ebft v\u00e0 gi\u00fap ph\u00e1t hi\u1ec7n s\u1edbm hi\u1ec7n t\u01b0\u1ee3ng suy gi\u1ea3m.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 X\u00e1c th\u1ef1c Ng\u00e2n s\u00e1ch Quang h\u1ecdc v\u00e0 Ch\u1ea5t l\u01b0\u1ee3ng T\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u00f4ng su\u1ea5t thu (RX) n\u1eb1m trong d\u1ea3i ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c (kh\u00f4ng qu\u00e1 th\u1ea5p c\u0169ng kh\u00f4ng qu\u00e1 cao)<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang ho\u1eb7c <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-time-domain-reflectometer-fiber-fault-detection-guide\/\" target=\"_blank\" rel=\"\">OTDR<\/a> n\u1ebfu c\u1ea7n thi\u1ebft<\/p><\/li>\n\n\n\n<li><p>X\u00e1c nh\u1eadn t\u1ed5ng t\u1ed5n hao n\u1eb1m trong ng\u00e2n s\u00e1ch kho\u1ea3ng 14\u201315 dB<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><br>Ngay c\u1ea3 khi li\u00ean k\u1ebft v\u1eabn ho\u1ea1t \u0111\u1ed9ng, ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u k\u00e9m c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i ng\u1eaft qu\u00e3ng v\u00e0 m\u1ea5t g\u00f3i d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b2 Danh s\u00e1ch ki\u1ec3m tra kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u01a1 b\u1ea3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu li\u00ean k\u1ebft kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, h\u00e3y th\u1ef1c hi\u1ec7n quy tr\u00ecnh nhanh sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 Ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a module v\u1edbi switch<\/p><\/li>\n\n\n\n<li><p>\u2705 X\u00e1c nh\u1eadn s\u1eed d\u1ee5ng c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (OS2), kh\u00f4ng ph\u1ea3i c\u00e1p \u0111a mode (MMF)<\/p><\/li>\n\n\n\n<li><p>\u2705 Ki\u1ec3m tra \u0111\u1ed9 kh\u1edbp b\u01b0\u1edbc s\u00f3ng (ER \u2194 ER)<\/p><\/li>\n\n\n\n<li><p>\u2705 Ho\u00e1n \u0111\u1ed5i c\u00e1p ph\u00e1t (TX) v\u00e0 c\u00e1p thu (RX)<\/p><\/li>\n\n\n\n<li><p>\u2705 L\u00e0m s\u1ea1ch l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>\u2705 Ki\u1ec3m tra gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb DOM (\u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00f4ng su\u1ea5t thu \u2013 RX power)<\/p><\/li>\n\n\n\n<li><p>\u2705 Th\u1eed nghi\u1ec7m b\u1eb1ng module ho\u1eb7c c\u1ed5ng \u0111\u00e3 bi\u1ebft l\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/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\">Vi\u1ec7c tri\u1ec3n khai th\u00e0nh c\u00f4ng 10GBASE-ER ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-install-optical-modules-safely-guide\/\" target=\"_blank\" rel=\"\">quy tr\u00ecnh l\u1eafp \u0111\u1eb7t<\/a> k\u1ef7 lu\u1eadt nh\u01b0 ch\u00ednh module \u2014 s\u1ee3i quang s\u1ea1ch, ph\u00e2n c\u1ef1c \u0111\u00fang v\u00e0 x\u00e1c th\u1ef1c \u0111\u1ea7y \u0111\u1ee7 l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 SFP+ 40 km<\/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\/5cc76921a2dd4867969251281d0bd23f.jpg\" alt=\"FAQ About SFP+ 40km\" class=\"wp-image-2698\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc76921a2dd4867969251281d0bd23f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc76921a2dd4867969251281d0bd23f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc76921a2dd4867969251281d0bd23f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc76921a2dd4867969251281d0bd23f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc76921a2dd4867969251281d0bd23f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Module SFP+ 40 km c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n 10G kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 module SFP+ 40 km h\u1ed7 tr\u1ee3 <strong>d\u1ea3i t\u1ed1c \u0111\u1ed9 \u0111a m\u1ee9c (v\u00ed d\u1ee5: 1,25G\u201311,32G)<\/strong>, nh\u01b0ng \u0111i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf module v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi switch. Lu\u00f4n x\u00e1c minh xem thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n c\u00f3 h\u1ed7 tr\u1ee3 th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 xu\u1ed1ng hay kh\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 10GBASE-ER v\u00e0 10GBASE-EW l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai \u0111\u1ec1u h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch 40 km tr\u00ean c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF), nh\u01b0ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>10GBASE-ER \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a cho m\u00f4i tr\u01b0\u1eddng Ethernet<\/p><\/li>\n\n\n\n<li><p>10GBASE-EW \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sonet-sdh-in-optical-transport-networks\/\" target=\"_blank\" rel=\"\">SONET\/SDH<\/a> <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/lan-phy-vs-wan-phy-key-differences-in-10gbe-explained\/\" target=\"_blank\" rel=\"\">WAN PHY<\/a> \u1ee9ng d\u1ee5ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang t\u01b0\u01a1ng t\u1ef1 nhau v\u1ec1 ph\u1ea7n c\u1ee9ng nh\u01b0ng kh\u00e1c nhau \u1edf <strong>c\u00e1ch s\u1eed d\u1ee5ng giao th\u1ee9c m\u1ea1ng<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00f4i c\u00f3 c\u1ea7n b\u00f9 t\u00e1n s\u1eafc cho li\u00ean k\u1ebft 40 km kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai ti\u00eau chu\u1ea9n 40 km, vi\u1ec7c b\u00f9 t\u00e1n s\u1eafc l\u00e0 kh\u00f4ng b\u1eaft bu\u1ed9c. C\u00e1c module 10GBASE-ER hi\u1ec7n \u0111\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd t\u00e1n s\u1eafc s\u1eafc m\u00e0u trong ph\u1ea1m vi n\u00e0y d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00f4ng su\u1ea5t ph\u00e1t quang \u0111i\u1ec3n h\u00ecnh c\u1ee7a module SFP+ 40 km l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u1ea5t ph\u00e1t quang (TX) th\u01b0\u1eddng dao \u0111\u1ed9ng kho\u1ea3ng t\u1eeb 0 dBm \u0111\u1ebfn +4 dBm, t\u00f9y theo nh\u00e0 s\u1ea3n xu\u1ea5t. M\u1ee9c c\u00f4ng su\u1ea5t cao h\u01a1n n\u00e0y cho ph\u00e9p truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa tr\u00ean c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Module SFP+ 40 km c\u00f3 th\u1ec3 d\u00f9ng cho k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. SFP+ 40 km th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) khi kho\u1ea3ng c\u00e1ch n\u1eb1m trong ph\u1ea1m vi 40 km, mang l\u1ea1i gi\u1ea3i ph\u00e1p chi ph\u00ed hi\u1ec7u qu\u1ea3 thay th\u1ebf c\u00e1c gi\u1ea3i ph\u00e1p truy\u1ec1n d\u1eabn xa ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ed9t li\u00ean k\u1ebft 40 km c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng bao nhi\u00eau \u0111\u1ea7u n\u1ed1i?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n c\u1ed1 \u0111\u1ecbnh, nh\u01b0ng m\u1ed7i \u0111\u1ea7u n\u1ed1i g\u00e2y ra <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-insertion-loss-definition-impact\/\">t\u1ed5n hao ch\u00e8n<\/a> (~0,2\u20130,5 dB). T\u1ed5ng s\u1ed1 \u0111\u1ea7u n\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n sao cho t\u1ed5n hao li\u00ean k\u1ebft t\u1ed5ng th\u1ec3 n\u1eb1m trong ng\u00e2n s\u00e1ch quang h\u1ecdc (~15 dB).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Module SFP+ 40 km c\u00f3 h\u1ed7 tr\u1ee3 thay th\u1ebf n\u00f3ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3. Gi\u1ed1ng nh\u01b0 h\u1ea7u h\u1ebft c\u00e1c module SFP+, SFP+ 40 km h\u1ed7 tr\u1ee3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/are-sfp-modules-hot-swappable-safe-sfp-hot-swap-guide\/\">Cat5e\/Cat6 Ethernet<\/a> ho\u1ea1t \u0111\u1ed9ng thay th\u1ebf n\u00f3ng, cho ph\u00e9p c\u1eafm v\u00e0 r\u00fat module m\u00e0 kh\u00f4ng c\u1ea7n t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu c\u00f4ng su\u1ea5t thu qu\u00e1 cao?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00f4ng su\u1ea5t thu (RX) qu\u00e1 cao (v\u00ed d\u1ee5: trong c\u00e1c li\u00ean k\u1ebft ng\u1eafn), b\u1ed9 thu c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i, g\u00e2y ra l\u1ed7i. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, c\u1ea7n s\u1eed d\u1ee5ng b\u1ed9 suy hao quang \u0111\u1ec3 gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83d\udea9 <\/strong>K\u1ebft lu\u1eadn: Li\u1ec7u SFP+ 40 km c\u00f3 ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn module quang ph\u00f9 h\u1ee3p cu\u1ed1i c\u00f9ng ph\u1ee5 thu\u1ed9c v\u00e0o <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-distance-real-world-range-optics-explained\/\">kho\u1ea3ng c\u00e1ch<br><\/a>, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang, t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng. SFP+ 40 km (10GBASE-ER) l\u00e0 gi\u1ea3i ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng nh\u1eb1m cung c\u1ea5p k\u1ebft n\u1ed1i 10G \u1ed5n \u0111\u1ecbnh tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i, \u0111\u1eb7c bi\u1ec7t khi m\u1ea1ng c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a c\u00e1c module quang ti\u00eau chu\u1ea9n 10 km.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong><br>N\u1ebfu y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft c\u1ee7a b\u1ea1n n\u1eb1m trong kho\u1ea3ng t\u1eeb 10 km \u0111\u1ebfn 40 km, SFP+ 40 km l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng. \u0110\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft ng\u1eafn h\u01a1n, module LR c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n.<\/p><\/li>\n\n\n\n<li><p><strong>Lo\u1ea1i c\u00e1p quang:<\/strong><br>SFP+ 40 km y\u00eau c\u1ea7u c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (OS2). N\u1ebfu c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng c\u00e1p \u0111a mode, module n\u00e0y s\u1ebd kh\u00f4ng t\u01b0\u01a1ng th\u00edch.<\/p><\/li>\n\n\n\n<li><p><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch:<\/strong><br>Lu\u00f4n x\u00e1c minh t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi switch\/nh\u00e0 cung c\u1ea5p v\u00e0 \u0111\u1ea3m b\u1ea3o m\u00e3 h\u00f3a \u0111\u00fang ho\u1eb7c <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceivers-msa-standards-guide\/\" target=\"_blank\" rel=\"\">tu\u00e2n th\u1ee7 MSA<br><\/a> \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 tri\u1ec3n khai.<\/p><\/li>\n\n\n\n<li><p><strong>T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng:<\/strong><br>Ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c k\u1ebft n\u1ed1i n\u1ed9i b\u1ed9 doanh nghi\u1ec7p, m\u1ea1ng \u0111\u00f4 th\u1ecb (metro), k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) v\u00e0 c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng (backbone) kho\u1ea3ng c\u00e1ch xa, n\u01a1i \u0111\u1ed9 tin c\u1eady v\u00e0 t\u1ea7m ph\u1ee7 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/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\">SFP+ 40 km (10GBASE-ER) l\u00e0 gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u cho vi\u1ec7c truy\u1ec1n d\u1eabn 10G kho\u1ea3ng c\u00e1ch xa v\u1edbi chi ph\u00ed hi\u1ec7u qu\u1ea3 \u2014 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u n\u0103ng, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n khi tri\u1ec3n khai.<\/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\/3e3938d69ec74403a43a7af2b7d96abd.jpg\" alt=\"Is SFP+ 40km the Right Choice?\" class=\"wp-image-2699\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3e3938d69ec74403a43a7af2b7d96abd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3e3938d69ec74403a43a7af2b7d96abd-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3e3938d69ec74403a43a7af2b7d96abd-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3e3938d69ec74403a43a7af2b7d96abd-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3e3938d69ec74403a43a7af2b7d96abd-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng tri\u1ec3n khai li\u00ean k\u1ebft quang 40 km ch\u01b0a?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p m\u1ea1ng 10G kho\u1ea3ng c\u00e1ch xa, vi\u1ec7c l\u1ef1a ch\u1ecdn module SFP+ 40 km \u0111\u00e1ng tin c\u1eady v\u00e0 t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7 l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng l\u00e2u d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Kh\u00e1m ph\u00e1 c\u00e1c b\u1ed9 thu ph\u00e1t quang ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch t\u1ea1i <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>, n\u01a1i b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 vi\u1ec5n th\u00f4ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u r\u00f5 c\u00e1c module SFP+ 40 km (10GBASE-ER), bao g\u1ed3m th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u00e0 c\u00e1ch ch\u1ecdn b\u1ed9 thu ph\u00e1t quang t\u1ea7m xa m\u1edf r\u1ed9ng ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>","protected":false},"author":1,"featured_media":2690,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[14],"class_list":["post-2700","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-10g-sfp-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2700","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=2700"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2700\/revisions"}],"predecessor-version":[{"id":10717,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2700\/revisions\/10717"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2690"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}