{"id":2722,"date":"2026-03-31T00:00:00","date_gmt":"2026-03-31T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/qsfp-40gbase-lr4-specs-compatibility-guide\/"},"modified":"2026-06-22T03:40:41","modified_gmt":"2026-06-22T03:40:41","slug":"qsfp-40gbase-lr4-specs-compatibility-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/qsfp-40gbase-lr4-specs-compatibility-guide","title":{"rendered":"Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt QSFP+ 40GBASE-LR4, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1ch l\u1ef1a ch\u1ecdn"},"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\/95a3e8a8b77840a8bf7531ac53a5a1ea-1024x536.jpg\" alt=\"QSFP+ 40GBASE-LR4 Specs, Compatibility, and How to Choose\" class=\"wp-image-2712\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/95a3e8a8b77840a8bf7531ac53a5a1ea-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/95a3e8a8b77840a8bf7531ac53a5a1ea-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/95a3e8a8b77840a8bf7531ac53a5a1ea-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/95a3e8a8b77840a8bf7531ac53a5a1ea-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/95a3e8a8b77840a8bf7531ac53a5a1ea.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u01b0u l\u01b0\u1ee3ng trung t\u00e2m d\u1eef li\u1ec7u ti\u1ebfp t\u1ee5c t\u0103ng v\u00e0 m\u1ea1ng doanh nghi\u1ec7p y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao h\u01a1n, th\u00ec <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482487.htm\">B\u1ed9 thu ph\u00e1t QSFP+ 40GBASE-LR4<\/a> v\u1eabn l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i nh\u1eb1m \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady \u1edf t\u1ed1c \u0111\u1ed9 40 Gbps tr\u00ean kho\u1ea3ng c\u00e1ch xa. D\u00f9 b\u1ea1n \u0111ang n\u00e2ng c\u1ea5p \u0111\u01b0\u1eddng truy\u1ec1n l\u00f5i trong khu\u00f4n vi\u00ean, x\u00e2y d\u1ef1ng k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\">DCI<\/a>), hay t\u1ed1i \u01b0u h\u00f3a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang hi\u1ec7n c\u00f3, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482438.htm\">QSFP+ LR4<\/a> \u2014 c\u0169ng nh\u01b0 c\u00e1ch ch\u1ecdn module ph\u00f9 h\u1ee3p \u2014 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng m\u1ea1ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc t\u1ea7m ng\u1eafn, 40GBASE-LR4 s\u1eed d\u1ee5ng gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (WDM) \u0111\u1ec3 truy\u1ec1n b\u1ed1n t\u00edn hi\u1ec7u ri\u00eang bi\u1ec7t, m\u1ed7i t\u00edn hi\u1ec7u 10 Gbps, tr\u00ean m\u1ed9t c\u1eb7p s\u1ee3i quang \u0111\u01a1n mode. Thi\u1ebft k\u1ebf n\u00e0y cho ph\u00e9p truy\u1ec1n d\u1eabn l\u00ean \u0111\u1ebfn 10 km \u0111\u1ed3ng th\u1eddi gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u1ec1 c\u00e1p quang so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p quang h\u1ecdc song song nh\u01b0 SR4. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y c\u0169ng \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c m\u1edbi li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, y\u00eau c\u1ea7u v\u1ec1 c\u00e1p quang v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c khi tri\u1ec3n khai \u2014 nh\u1eefng l\u0129nh v\u1ef1c th\u01b0\u1eddng ph\u00e1t sinh nhi\u1ec1u s\u1ef1 c\u1ed1 trong th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u201cQSFP+ 40GBASE-LR4 l\u00e0 g\u00ec?\u201d c\u00f3 ngh\u0129a l\u00e0<\/em>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module n\u00e0y c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a t\u00f4i kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang hi\u1ec7n c\u00f3 kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u1ea1i sao li\u00ean k\u1ebft LR4 c\u1ee7a t\u00f4i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 mong \u0111\u1ee3i?<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c tri\u1ec3n khai LR4 c\u00f2n \u0111\u00e1ng gi\u00e1 so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p 100G kh\u00f4ng?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c nh\u1eefng c\u00e2u h\u1ecfi tr\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd n\u1eafm \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3u r\u00f5 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a QSFP+ 40GBASE-LR4<\/p><\/li>\n\n\n\n<li><p>Danh s\u00e1ch ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch th\u1ef1c ti\u1ec5n \u0111\u1ec3 tr\u00e1nh nh\u1eefng sai s\u00f3t t\u1ed1n k\u00e9m khi tri\u1ec3n khai<\/p><\/li>\n\n\n\n<li><p>So s\u00e1nh gi\u1eefa <a href=\"https:\/\/www.l-p.com\/products\/482491.htm\" target=\"_self\">LR4<\/a> v\u00e0. <a href=\"https:\/\/www.l-p.com\/products\/482749.htm\" target=\"_self\">SR4<\/a> v\u00e0. <a href=\"https:\/\/www.l-p.com\/products\/472716.htm\" target=\"_self\">ER4<\/a> nh\u1eb1m h\u1ed7 tr\u1ee3 ra quy\u1ebft \u0111\u1ecbnh t\u1ed1t h\u01a1n<\/p><\/li>\n\n\n\n<li><p>C\u00e1c chi\u1ebfn l\u01b0\u1ee3c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 d\u1ef1a tr\u00ean c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf trong m\u1ea1ng<\/p><\/li>\n\n\n\n<li><p>Khung l\u00e0m vi\u1ec7c t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 l\u1ef1a ch\u1ecdn module QSFP+ LR4 \u0111\u00e1ng tin c\u1eady<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n \u0111ang l\u1eadp k\u1ebf ho\u1ea1ch tri\u1ec3n khai m\u1edbi hay kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 tr\u00ean m\u1ed9t li\u00ean k\u1ebft hi\u1ec7n c\u00f3, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t, \u00edt r\u1ee7i ro khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c b\u1ed9 thu ph\u00e1t quang QSFP+ 40GBASE-LR4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc QSFP+ 40GBASE-LR4 l\u00e0 g\u00ec? (T\u1ed5ng quan k\u1ef9 thu\u1eadt)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ 40GBASE-LR4 l\u00e0 ti\u00eau chu\u1ea9n b\u1ed9 thu ph\u00e1t quang 40Gbps do IEEE 802.3ba \u0111\u1ecbnh ngh\u0129a, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch xa tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (l\u00ean \u0111\u1ebfn 10 km). Ti\u00eau chu\u1ea9n n\u00e0y s\u1eed d\u1ee5ng gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (WDM) \u0111\u1ec3 k\u1ebft h\u1ee3p b\u1ed1n t\u00edn hi\u1ec7u 10Gbps th\u00e0nh m\u1ed9t li\u00ean k\u1ebft duy nh\u1ea5t, cho ph\u00e9p k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao ch\u1ec9 v\u1edbi hai s\u1ee3i quang (LC duplex).<\/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\/53e7a1d5f8914c048080e35e8c7b01a9.jpg\" alt=\"What Is QSFP+ 40GBASE-LR4? \" class=\"wp-image-2713\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/53e7a1d5f8914c048080e35e8c7b01a9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/53e7a1d5f8914c048080e35e8c7b01a9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/53e7a1d5f8914c048080e35e8c7b01a9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/53e7a1d5f8914c048080e35e8c7b01a9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/53e7a1d5f8914c048080e35e8c7b01a9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ecbnh ngh\u0129a v\u00e0 ti\u00eau chu\u1ea9n IEEE<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482492.htm\">40GBASE-LR4<\/a> l\u00e0 ti\u00eau chu\u1ea9n b\u1ed9 thu ph\u00e1t quang t\u1ea7m xa \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3ba-standard\/\">IEEE 802.3ba<\/a> \u0111\u1eb7c t\u1ea3 cho Ethernet 40 Gigabit. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao 40Gbps tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF) v\u1edbi kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a l\u00ean \u0111\u1ebfn 10 kil\u00f4m\u00e9t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u1ebfu t\u1ed1 h\u00ecnh d\u1ea1ng \u201cQSFP+\u201d (Quad Small Form-factor Pluggable Plus) cho ph\u00e9p b\u1ed1n \u0111\u01b0\u1eddng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t m\u00f4-\u0111un nh\u1ecf g\u1ecdn, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>```html<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c m\u00f4-\u0111un t\u1ea7m ng\u1eafn, LR4 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c li\u00ean k\u1ebft t\u1ea7m xa, \u0111\u1ed9 tin c\u1eady cao, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1ch LR4 s\u1eed d\u1ee5ng WDM (4\u00d710G b\u01b0\u1edbc s\u00f3ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt quan tr\u1ecdng nh\u1ea5t c\u1ee7a 40GBASE-LR4 l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\">Ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (Wavelength Division Multiplexing)<\/a> (WDM).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec truy\u1ec1n t\u00edn hi\u1ec7u 40Gbps tr\u00ean m\u1ed9t k\u00eanh duy nh\u1ea5t, LR4 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chia t\u00edn hi\u1ec7u th\u00e0nh b\u1ed1n \u0111\u01b0\u1eddng \u0111\u1ed9c l\u1eadp 10Gbps<\/p><\/li>\n\n\n\n<li><p>G\u00e1n cho m\u1ed7i \u0111\u01b0\u1eddng m\u1ed9t b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau (th\u01b0\u1eddng n\u1eb1m trong d\u1ea3i kho\u1ea3ng 1310 nm)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft h\u1ee3p (gh\u00e9p k\u00eanh) ch\u00fang th\u00e0nh m\u1ed9t t\u00edn hi\u1ec7u quang duy nh\u1ea5t \u0111\u1ec3 truy\u1ec1n \u0111i<\/p><\/li>\n\n\n\n<li><p>T\u00e1ch r\u1eddi (t\u00e1ch k\u00eanh) ch\u00fang tr\u1edf l\u1ea1i t\u1ea1i m\u00e1y thu<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ec9 c\u1ea7n 2 s\u1ee3i quang (LC duplex)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u1ea7n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang song song (nh\u01b0 MPO d\u00f9ng trong SR4)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ec sao WDM quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ebfn tr\u00fac d\u1ef1a tr\u00ean WDM n\u00e0y mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf th\u1ef1c ti\u1ec5n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01a1n gi\u1ea3n h\u00f3a h\u1ec7 th\u1ed1ng c\u00e1p (LC so v\u1edbi MPO)<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn d\u00e0i h\u01a1n<\/p><\/li>\n\n\n\n<li><p>C\u1ea3i thi\u1ec7n t\u00ednh linh ho\u1ea1t trong thi\u1ebft k\u1ebf m\u1ea1ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, n\u00f3 c\u0169ng g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed cao h\u01a1n so v\u1edbi SR4<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 nh\u1ea1y cao h\u01a1n \u0111\u1ed1i v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng s\u1ee3i quang v\u00e0 t\u1ed5n hao li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c t\u00ednh n\u0103ng ch\u00ednh v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c t\u00ednh n\u0103ng c\u1ed1t l\u00f5i<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u:<\/strong> 40 Gbps<\/p><\/li>\n\n\n\n<li><p><strong>Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn:<\/strong> \u0110\u1ebfn 10 km<\/p><\/li>\n\n\n\n<li><p><strong>Lo\u1ea1i s\u1ee3i quang:<\/strong> S\u1ee3i quang \u0111\u01a1n mode (ch\u1ec9 SMF)<\/p><\/li>\n\n\n\n<li><p><strong>\u0110\u1ea7u n\u1ed1i:<\/strong> <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\" target=\"_blank\" rel=\"\">\u0110\u1ea7u n\u1ed1i LC hai chi\u1ec1u (Duplex LC)<br><\/a><\/p><\/li>\n\n\n\n<li><p><strong>C\u00f4ng ngh\u1ec7 quang h\u1ecdc:<\/strong> WDM (4\u00d710G \u0111\u01b0\u1eddng)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/strong><br>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c c\u01a1 s\u1edf \u1edf kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a SR4<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng khu\u00f4n vi\u00ean<\/strong><br>K\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch l\u00f5i tr\u00ean c\u00e1c m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p quy m\u00f4 l\u1edbn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng \u0111\u00f4 th\u1ecb<\/strong><br>Cung c\u1ea5p c\u00e1c li\u00ean k\u1ebft t\u1eadp h\u1ee3p \u1ed5n \u0111\u1ecbnh \u1edf kho\u1ea3ng c\u00e1ch xa<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ 40GBASE-LR4 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t \u201cm\u00f4-\u0111un 40G\u201d\u2014\u0111\u00e2y l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p quang h\u1ecdc d\u1ef1a tr\u00ean b\u01b0\u1edbc s\u00f3ng, d\u00e0nh cho kho\u1ea3ng c\u00e1ch xa, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng c\u1ee7a c\u00e1p quang \u0111a mode<\/p><\/li>\n\n\n\n<li><p>Ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e1p s\u1ee3i c\u1ea7n \u0111\u01b0\u1ee3c t\u1ed1i thi\u1ec3u h\u00f3a<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch mang t\u00ednh s\u1ed1ng c\u00f2n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c hi\u1ec3u n\u1ec1n t\u1ea3ng n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu tr\u01b0\u1edbc khi chuy\u1ec3n sang c\u00e1c ph\u1ea7n ti\u1ebfp theo v\u1ec1 \u0111\u1eb7c t\u1ea3 k\u1ef9 thu\u1eadt, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc \u0110\u1eb7c t\u1ea3 k\u1ef9 thu\u1eadt v\u00e0 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch c\u1ee7a QSFP+ 40GBASE-LR4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, k\u1ef9 s\u01b0 ph\u1ea3i hi\u1ec3u r\u00f5 c\u00e1c \u0111\u1eb7c t\u1ea3 k\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i v\u00e0 gi\u1edbi h\u1ea1n v\u1eadt l\u00fd c\u1ee7a QSFP+ 40GBASE-LR4. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y tr\u1ef1c ti\u1ebfp x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u00f4-\u0111un c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng c\u1ee7a b\u1ea1n hay kh\u00f4ng.<\/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\/f6ffc511e8624c858a95da25d2254db6.jpg\" alt=\"QSFP+ 40GBASE-LR4 Specifications and Distance Limits\" class=\"wp-image-2714\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6ffc511e8624c858a95da25d2254db6.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6ffc511e8624c858a95da25d2254db6-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6ffc511e8624c858a95da25d2254db6-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6ffc511e8624c858a95da25d2254db6-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f6ffc511e8624c858a95da25d2254db6-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c \u0111\u1eb7c t\u1ea3 k\u1ef9 thu\u1eadt ch\u00ednh c\u1ee7a QSFP+ 40GBASE-LR4<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 297px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>M\u1ee5c<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>Ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3ba<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>H\u1ec7 s\u1ed1 d\u1ea1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>QSFP+ (B\u1ed9 n\u1ed1i nh\u1ecf d\u1ea1ng b\u1ed1n c\u1ed5ng c\u00f3 th\u1ec3 c\u1eafm th\u00e1o \u0111\u01b0\u1ee3c phi\u00ean b\u1ea3n n\u00e2ng cao)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>25Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40 Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>C\u00f4ng ngh\u1ec7 truy\u1ec1n d\u1eabn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (4 k\u00eanh 10G)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>B\u01b0\u1edbc s\u00f3ng<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~1310 nm (l\u01b0\u1edbi WDM)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF, OS2)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ebfn 10 km<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC Duplex<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>S\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2 (c\u1eb7p ph\u00e1t\/nh\u1eadn)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>D\u1ef1 tr\u1eef c\u00f4ng su\u1ea5t \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~6\u20139 dB<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>D\u1ea3i c\u00f4ng su\u1ea5t ph\u00e1t (TX)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -7 dBm \u0111\u1ebfn +2,3 dBm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>\u0110\u1ed9 nh\u1ea1y nh\u1eadn (RX)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -11,5 dBm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>H\u1ed7 tr\u1ee3 c\u1eafm n\u00f3ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"297\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng khu\u00f4n vi\u00ean, li\u00ean k\u1ebft \u0111\u00f4 th\u1ecb<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn: T\u1ed1i \u0111a 10 km<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Theo ti\u00eau chu\u1ea9n IEEE 802.3ba, QSFP+ 40GBASE-LR4 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea1m vi t\u1ed1i \u0111a: l\u00ean \u0111\u1ebfn 10 kil\u00f4m\u00e9t<\/p><\/li>\n\n\n\n<li><p>Tr\u00ean c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF) trong \u0111i\u1ec1u ki\u1ec7n ti\u00eau chu\u1ea9n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong tri\u1ec3n khai th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea1m vi s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh: 500 m \u2013 10 km<\/p><\/li>\n\n\n\n<li><p>V\u1eabn ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 \u1edf kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn (v\u00ed d\u1ee5: 2\u201310 m), nh\u01b0ng c\u1ea7n c\u00e2n nh\u1eafc v\u1ec1 c\u00f4ng su\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f L\u01b0u \u00fd khi tri\u1ec3n khai \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn (th\u01b0\u1eddng b\u1ecb b\u1ecf qua)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn (v\u00ed d\u1ee5: &lt;10 m):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00edn hi\u1ec7u c\u00f3 th\u1ec3 qu\u00e1 m\u1ea1nh (qu\u00e1 t\u1ea3i \u0111\u1ea7u nh\u1eadn)<\/p><\/li>\n\n\n\n<li><p>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p hi\u1ebfm, c\u00f3 th\u1ec3 c\u1ea7n b\u1ed9 suy hao quang h\u1ecdc<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea7n l\u1edbn m\u00f4-\u0111un LR4 hi\u1ec7n \u0111\u1ea1i x\u1eed l\u00fd an to\u00e0n c\u00e1c li\u00ean k\u1ebft ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Lo\u1ea1i c\u00e1p s\u1ee3i: Ch\u1ec9 d\u00f9ng c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ LR4 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nghi\u00eam ng\u1eb7t cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/single-mode-fiber-os1-vs-os2-comparison-indoor-outdoor-use\/\" target=\"_blank\" rel=\"\">What Does SFP Stand For?<\/a> (Khuy\u1ebfn ngh\u1ecb d\u00f9ng OS2)<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng ho\u1ea1t \u0111\u1ed9ng: kho\u1ea3ng ~1310 nm (c\u00e1c k\u00eanh WDM)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u274c Kh\u00f4ng khuy\u1ebfn ngh\u1ecb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1p s\u1ee3i quang \u0111a mode (OM3 \/ OM4)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd do \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>LR4 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c truy\u1ec1n d\u1eabn ch\u00ednh x\u00e1c theo b\u01b0\u1edbc s\u00f3ng<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a mode g\u00e2y ra s\u1ef1 t\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 \u2192 t\u00edn hi\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Lo\u1ea1i \u0111\u1ea7u n\u1ed1i: LC song c\u00f4ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c m\u00f4-\u0111un SR4 s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/understanding-polarity-in-mtp-mpo-system-for-signal-integrity\/\">\u0110\u1ea7u n\u1ed1i MPO<\/a>, QSFP+ LR4 s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i LC song c\u00f4ng (t\u1ed5ng c\u1ed9ng 2 s\u1ee3i)<\/p>\n<ul class=\"wp-block-list\">\n<li><p>1 s\u1ee3i cho truy\u1ec1n (Tx)<\/p><\/li>\n\n\n\n<li><p>1 s\u1ee3i cho nh\u1eadn (Rx)<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u01afu \u0111i\u1ec3m th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Qu\u1ea3n l\u00fd c\u00e1p d\u1ec5 d\u00e0ng h\u01a1n<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang \u0111\u01a1n mode (SMF) hi\u1ec7n c\u00f3<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p th\u1ea5p h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ed5ng quan v\u1ec1 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t (Y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang h\u1ecdc x\u00e1c \u0111\u1ecbnh m\u1ee9c t\u1ed5n hao t\u00edn hi\u1ec7u m\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh: <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482493.htm\">QSFP+ LR4<\/a> C\u00f4ng su\u1ea5t ph\u00e1t (Tx): kho\u1ea3ng -7 dBm \u0111\u1ebfn +2,3 dBm<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu (Rx): kho\u1ea3ng -11,5 dBm<\/p><\/li>\n\n\n\n<li><p>T\u1ed5ng ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t: kho\u1ea3ng 6\u20139 dB<\/p><\/li>\n\n\n\n<li><p>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Trong tri\u1ec3n khai th\u1ef1c t\u1ebf, t\u1ed5n hao t\u00edn hi\u1ec7u xu\u1ea5t ph\u00e1t t\u1eeb:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(kho\u1ea3ng c\u00e1ch)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/attenuation-in-optical-transceiver-management-and-solutions\/\" target=\"_blank\" rel=\"\">Su\u1ea5t suy hao s\u1ee3i quang<\/a> Giao di\u1ec7n b\u1ea9n ho\u1eb7c b\u1ecb h\u01b0 h\u1ecfng<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao \u0111\u1ea7u n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao h\u00e0n n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111\u01a1n mode 10 km \u2248 t\u1ed5n hao ~3\u20134 dB<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i \/ m\u1ed1i n\u1ed1i \u2248 t\u1ed5n hao ~1\u20132 dB<\/p><\/li>\n\n\n\n<li><p>\u2714 V\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n ch\u1ecbu \u0111\u1ef1ng c\u1ee7a LR4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u274c L\u1eafp \u0111\u1eb7t k\u00e9m c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch \u2192 m\u1ea5t k\u1ebft n\u1ed1i<br>QSFP+ 40GBASE-LR4 mang l\u1ea1i s\u1ef1 k\u1ebft h\u1ee3p c\u00e2n b\u1eb1ng gi\u1eefa kho\u1ea3ng c\u00e1ch, t\u00ednh \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u n\u0103ng, nh\u01b0ng ch\u1ec9 khi:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i s\u1ee3i quang (SMF)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed5n hao \u0111\u01b0\u1eddng truy\u1ec1n n\u1eb1m trong ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp v\u1eadt l\u00fd \u0111\u01b0\u1ee3c duy tr\u00ec<\/p><\/li>\n\n\n\n<li><p>\ud83d\udccc So s\u00e1nh QSFP+ 40GBASE-LR4, SR4 v\u00e0 ER4: Nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa QSFP+ 40GBASE-LR4, SR4 v\u00e0 ER4 l\u00e0 m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng nh\u1ea5t trong thi\u1ebft k\u1ebf m\u1ea1ng 40G. M\u1eb7c d\u00f9 c\u1ea3 ba \u0111\u1ec1u cung c\u1ea5p k\u1ebft n\u1ed1i 40Gbps theo ti\u00eau chu\u1ea9n IEEE 802.3ba, ki\u1ebfn tr\u00fac, y\u00eau c\u1ea7u s\u1ee3i quang v\u00e0 c\u1ea5u tr\u00fac chi ph\u00ed c\u1ee7a ch\u00fang l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">So s\u00e1nh ki\u1ebfn tr\u00fac (C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng).<\/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\/c3e558f569864a72bd0613d679d27026.jpg\" alt=\"QSFP+ 40GBASE-LR4 vs. SR4 vs. ER4: Key Differences\" class=\"wp-image-2715\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c3e558f569864a72bd0613d679d27026.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c3e558f569864a72bd0613d679d27026-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c3e558f569864a72bd0613d679d27026-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c3e558f569864a72bd0613d679d27026-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c3e558f569864a72bd0613d679d27026-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n d\u1eabn<\/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;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Quang h\u1ecdc song song (4 k\u00eanh 10G)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\"><strong>QSFP+ SR4<br><\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n d\u1eabn song song t\u1ea7m ng\u1eafn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang \u0111a mode (MMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng (WDM \u2013 4 b\u01b0\u1edbc s\u00f3ng)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482495.htm\"><strong>QSFP+ LR4<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n d\u1eabn t\u1ea7m xa d\u1ef1a tr\u00ean WDM<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>WDM n\u00e2ng cao (quang h\u1ecdc t\u1ea7m xa h\u01a1n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473105.htm\"><strong>module QSFP+ ER4<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n d\u1eabn t\u1ea7m xa m\u1edf r\u1ed9ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i quang \u0111\u01a1n mode (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SR4 =<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>c\u00e1c k\u00eanh song song <strong>LR4 =<\/strong><\/p><\/li>\n\n\n\n<li><p>ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng <strong>ER4 =<\/strong><\/p><\/li>\n\n\n\n<li><p>WDM t\u1ea7m xa \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i <strong>So s\u00e1nh kho\u1ea3ng c\u00e1ch \u2013 chi ph\u00ed \u2013 c\u00e1p<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Chi ph\u00ed t\u01b0\u01a1ng \u0111\u1ed1i<\/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;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>~100\u2013400 m<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>SR4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50 Th\u1ea5p nh\u1ea5t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao (y\u00eau c\u1ea7u \u0111\u1ea7u n\u1ed1i MPO)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u00ean trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50 Trung b\u00ecnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>LR4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ebfn 10 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p (\u0111\u1ea7u n\u1ed1i LC song c\u00f4ng)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft khu\u00f4n vi\u00ean \/ li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50 Cao nh\u1ea5t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>ER4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 40 km<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ea1ng \u0111\u00f4 th\u1ecb \/ m\u1ea1ng t\u1ea7m xa<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft khu\u00f4n vi\u00ean \/ li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u00e1p (T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 SR4 (Quang h\u1ecdc song song)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i MPO\/MTP<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i MPO\/MTP<\/p><\/li>\n\n\n\n<li><p>Y\u00eau c\u1ea7u 8 ho\u1eb7c 12 s\u1ee3i c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>Qu\u1ea3n l\u00fd c\u00e1p ph\u1ee9c t\u1ea1p h\u01a1n<\/p><\/li>\n\n\n\n<li><p>Ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c gi\u00e1 \u0111\u1ee1 m\u1eadt \u0111\u1ed9 cao trong kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 LR4 (d\u1ef1a tr\u00ean WDM)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i LC duplex<\/p><\/li>\n\n\n\n<li><p>Ch\u1ec9 c\u1ea7n 2 s\u1ee3i c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>L\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng h\u01a1n<\/p><\/li>\n\n\n\n<li><p>L\u00fd t\u01b0\u1edfng khi ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e1p quang b\u1ecb h\u1ea1n ch\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39 ER4 (t\u1ea7m xa m\u1edf r\u1ed9ng)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u0169ng s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i LC duplex<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c t\u00ecnh hu\u1ed1ng khu\u1ebfch \u0111\u1ea1i \u1edf kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o n\u00ean ch\u1ecdn t\u1eebng lo\u1ea1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Ch\u1ecdn SR4 n\u1ebfu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n \u0111ang k\u1ebft n\u1ed1i switch-to-switch b\u00ean trong m\u1ed9t gi\u00e1 \u0111\u1ee1 ho\u1eb7c h\u00e0ng rack<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng c\u00e1ch d\u01b0\u1edbi 100\u2013300 m\u00e9t<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n mu\u1ed1n b\u1ed9 quang h\u1ecdc c\u00f3 chi ph\u00ed th\u1ea5p nh\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Ch\u1ecdn LR4 n\u1ebfu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u1ea7n t\u1ea7m ho\u1ea1t \u0111\u1ed9ng l\u00ean \u0111\u1ebfn 10 km<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n ch\u1ec9 c\u00f3 h\u1ea1 t\u1ea7ng c\u00e1p quang \u0111\u01a1n mode<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n mu\u1ed1n h\u1ec7 th\u1ed1ng c\u00e1p LC \u0111\u01a1n gi\u1ea3n thay v\u00ec MPO<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n \u0111ang x\u00e2y d\u1ef1ng c\u00e1c li\u00ean k\u1ebft khu\u00f4n vi\u00ean ho\u1eb7c DCI<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Ch\u1ecdn ER4 n\u1ebfu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u1ea7n kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 10 km (m\u1ea1ng \u0111\u00f4 th\u1ecb)<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n y\u00eau c\u1ea7u truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i \u0111\u1ed9 tin c\u1eady cao<\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch cho ph\u00e9p s\u1eed d\u1ee5ng b\u1ed9 quang h\u1ecdc chi ph\u00ed cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u00f4ng tin k\u1ef9 thu\u1eadt tr\u1ecdng y\u1ebfu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u1ea3 ba module \u0111\u1ec1u \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 40 Gbps, quy\u1ebft \u0111\u1ecbnh th\u1ef1c s\u1ef1 kh\u00f4ng n\u1eb1m \u1edf t\u1ed1c \u0111\u1ed9 \u2014 m\u00e0 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\">Lo\u1ea1i c\u00e1p quang + kho\u1ea3ng c\u00e1ch + m\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ea1 t\u1ea7ng<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Trong nhi\u1ec1u tri\u1ec3n khai th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SR4 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 t\u1ed1i \u01b0u m\u1eadt \u0111\u1ed9 v\u00e0 chi ph\u00ed<\/p><\/li>\n\n\n\n<li><p>LR4 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n<\/p><\/li>\n\n\n\n<li><p>ER4 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u1ed5n \u0111\u1ecbnh cho \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">QSFP+ 40GBASE-LR4 n\u1eb1m \u1edf \u201c\u0111i\u1ec3m ng\u1ecdt\u201d c\u1ee7a m\u1ea1ng 40G:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ea7m ho\u1ea1t \u0111\u1ed9ng xa h\u01a1n SR4<\/p><\/li>\n\n\n\n<li><p>H\u1ec7 th\u1ed1ng c\u00e1p \u0111\u01a1n gi\u1ea3n h\u01a1n SR4<\/p><\/li>\n\n\n\n<li><p>Chi ph\u00ed th\u1ea5p h\u01a1n ER4<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch m\u1ea1nh m\u1ebd v\u1edbi m\u1ea1ng doanh nghi\u1ec7p v\u00e0 m\u1ea1ng DCI<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc H\u01b0\u1edbng d\u1eabn t\u01b0\u01a1ng th\u00edch QSFP+ 40GBASE-LR4 (Danh s\u00e1ch ki\u1ec3m tra + C\u00e1c tr\u01b0\u1eddng h\u1ee3p l\u1ed7i th\u1ef1c t\u1ebf)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng kh\u00eda c\u1ea1nh quan tr\u1ecdng nh\u1ea5t khi tri\u1ec3n khai QSFP+ 40GBASE-LR4 l\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c switch, transceiver v\u00e0 h\u1ea1 t\u1ea7ng quang h\u1ecdc. Ngay c\u1ea3 khi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt tr\u00f4ng gi\u1ed1ng nhau tr\u00ean gi\u1ea5y, c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u00e1c th\u1ef1c t\u1ebf v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra \u2014 \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn t\u01b0\u01a1ng th\u00edch th\u1ef1c ti\u1ec5n, t\u1eadp trung v\u00e0o k\u1ef9 s\u01b0 nh\u1eb1m gi\u1ea3m r\u1ee7i ro tri\u1ec3n khai v\u00e0 tr\u00e1nh c\u00e1c s\u1ef1 c\u1ed1 m\u1ea1ng t\u1ed1n k\u00e9m.<\/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\/0be93b306b404f448f6b14e853b69ef9.jpg\" alt=\"QSFP+ 40GBASE-LR4 Compatibility Guide (Checklist + Real Failure Cases)\" class=\"wp-image-2716\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0be93b306b404f448f6b14e853b69ef9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0be93b306b404f448f6b14e853b69ef9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0be93b306b404f448f6b14e853b69ef9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0be93b306b404f448f6b14e853b69ef9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0be93b306b404f448f6b14e853b69ef9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng th\u00edch switch &amp; nh\u00e0 cung c\u1ea5p (Cisco, Juniper, v.v.)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module QSFP+ LR4 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i tr\u00ean c\u00e1c nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb m\u1ea1ng l\u1edbn, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482491.htm\" target=\"_self\">Cisco Systems<\/a><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482457.htm\" target=\"_self\">Juniper Networks<\/a><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482456.htm\" target=\"_self\">Arista Networks<\/a><\/p><\/li>\n\n\n\n<li><p>HPE \/ Aruba<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482459.htm\" target=\"_self\">Dell Networking<\/a><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o ba l\u1edbp then ch\u1ed1t:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ed7 tr\u1ee3 ph\u1ea7n c\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng QSFP+ ph\u1ea3i h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 40G<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t s\u1ed1 n\u1ec1n t\u1ea3ng y\u00eau c\u1ea7u c\u1eadp nh\u1eadt firmware<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p (<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-eeprom-powers-sfp-and-qsfp-optical-modules\/\"><strong>B\u1ed9 nh\u1edb EEPROM<\/strong><\/a><strong>)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c (OEM) th\u01b0\u1eddng kh\u00f3a c\u00e1c module quang th\u00f4ng qua m\u00e3 h\u00f3a<\/p><\/li>\n\n\n\n<li><p>\u201cC\u00e1c module LR4 \u201dt\u01b0\u01a1ng th\u00edch chung\u201d c\u00f3 th\u1ec3 b\u1ecb ch\u1eb7n tr\u1eeb khi k\u00edch ho\u1ea1t ch\u1ebf \u0111\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u1ea5u h\u00ecnh giao di\u1ec7n<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft l\u1eadp t\u1ed1c \u0111\u1ed9 ch\u00ednh x\u00e1c (40G)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng b\u1eadt ch\u1ebf \u0111\u1ed9 ph\u00e2n nh\u00e1nh (breakout) b\u1eaft bu\u1ed9c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd: Ngay c\u1ea3 khi module v\u1ec1 m\u1eb7t v\u1eadt l\u00fd t\u01b0\u01a1ng th\u00edch, c\u00e1c h\u1ea1n ch\u1ebf ph\u1ea7n m\u1ec1m v\u1eabn c\u00f3 th\u1ec3 ch\u1eb7n n\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c tu\u00e2n th\u1ee7 MSA<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t y\u1ebfu t\u1ed1 then ch\u1ed1t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch l\u00e0 m\u1ee9c \u0111\u1ed9 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n Th\u1ecfa thu\u1eadn Ngu\u1ed3n \u0110a d\u1ea1ng (Multi-Source Agreement \u2013 MSA).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ec sao MSA l\u1ea1i quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ecbnh ngh\u0129a c\u00e1c \u0111\u1eb7c t\u1ea3 quang h\u1ecdc (c\u00f4ng su\u1ea5t, b\u01b0\u1edbc s\u00f3ng, \u0111i\u1ec1u ch\u1ebf)<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p s\u1eed d\u1ee5ng \u0111a nh\u00e0 cung c\u1ea5p v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Trong th\u1ef1c t\u1ebf:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c module ho\u00e0n to\u00e0n tu\u00e2n th\u1ee7 MSA = t\u1ef7 l\u1ec7 th\u00e0nh c\u00f4ng cao h\u01a1n<\/p><\/li>\n\n\n\n<li><p>C\u00e1c module quang kh\u00f4ng tu\u00e2n th\u1ee7 ho\u1eb7c \u201c\u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ri\u00eang bi\u1ec7t\u201d = r\u1ee7i ro cao h\u01a1n do kh\u00f4ng kh\u1edbp nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh k\u1ef9 thu\u1eadt: Vi\u1ec7c tu\u00e2n th\u1ee7 MSA l\u00e0m gi\u1ea3m \u2014 nh\u01b0ng kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n \u2014 c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u00e1c ph\u1ed5 bi\u1ebfn (v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf trong tri\u1ec3n khai)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ef1a tr\u00ean c\u00e1c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf v\u00e0 b\u00e1o c\u00e1o t\u1eeb hi\u1ec7n tr\u01b0\u1eddng, c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Li\u00ean k\u1ebft b\u1ecb ng\u1eaft sau khi c\u1eafm module<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nguy\u00ean nh\u00e2n: Kh\u00f4ng kh\u1edbp m\u00e3 h\u00f3a gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>Bi\u1ec3u hi\u1ec7n: Module kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Li\u00ean k\u1ebft dao \u0111\u1ed9ng (tr\u1ea1ng th\u00e1i Up\/Down kh\u00f4ng \u1ed5n \u0111\u1ecbnh)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nguy\u00ean nh\u00e2n: C\u00f4ng su\u1ea5t quang \u1edf ng\u01b0\u1ee1ng gi\u1edbi h\u1ea1n ho\u1eb7c \u0111\u1ea7u n\u1ed1i b\u1ecb b\u1ea9n<\/p><\/li>\n\n\n\n<li><p>Bi\u1ec3u hi\u1ec7n: K\u1ebft n\u1ed1i gi\u00e1n \u0111o\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng \/ Kh\u00f4ng ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nguy\u00ean nh\u00e2n: Sai l\u1ec7ch \u0111\u01b0\u1eddng truy\u1ec1n TX\/RX ho\u1eb7c ph\u00e2n c\u1ef1c s\u1ee3i quang b\u1ecb l\u1ed7i<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng g\u1eb7p trong c\u00e1c d\u1ef1 \u00e1n di chuy\u1ec3n sang h\u1ea1 t\u1ea7ng nhi\u1ec1u s\u1ee3i quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ea5t b\u1ea1i trong th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nguy\u00ean nh\u00e2n: C\u1ed5ng ch\u01b0a \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u1edf ch\u1ebf \u0111\u1ed9 40G<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng g\u1eb7p \u1edf c\u00e1c switch th\u1ebf h\u1ec7 h\u1ed7n h\u1ee3p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">R\u1ee7i ro khi tr\u1ed9n c\u00e1c module quang (khu v\u1ef1c r\u1ee7i ro cao)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng r\u1ee7i ro b\u1ecb xem nh\u1eb9 nh\u1ea5t trong tri\u1ec3n khai QSFP+ LR4 l\u00e0 vi\u1ec7c tr\u1ed9n c\u00e1c lo\u1ea1i module quang ho\u1eb7c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c C\u00e1c t\u00ecnh hu\u1ed1ng r\u1ee7i ro:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ed9n OEM + <\/strong><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\"><strong>Thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/strong><\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f3 th\u1ec3 k\u00edch ho\u1ea1t c\u01a1 ch\u1ebf kh\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>C\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ed9n LR4 v\u1edbi c\u00e1c bi\u1ebfn th\u1ec3 LR kh\u00f4ng t\u01b0\u01a1ng th\u00edch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>V\u00ed d\u1ee5: Nh\u1ea7m l\u1eabn gi\u1eefa LR4 v\u00e0 LX4<\/p><\/li>\n\n\n\n<li><p>C\u00f3 th\u1ec3 g\u00e2y ra sai l\u1ec7ch b\u01b0\u1edbc s\u00f3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ed9n h\u1ea1 t\u1ea7ng s\u1ee3i \u0111\u01a1n mode (SMF) v\u00e0 \u0111a mode (MMF)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Suy hao t\u00edn hi\u1ec7u nghi\u00eam tr\u1ecdng<\/p><\/li>\n\n\n\n<li><p>Th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn m\u1ea5t ho\u00e0n to\u00e0n li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f <strong>C\u1ea3nh b\u00e1o k\u1ef9 thu\u1eadt<\/strong>: LR4 c\u00f3 th\u1ec3 tr\u00f4ng \u201ct\u01b0\u01a1ng th\u00edch\u201d, nh\u01b0ng c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00f4ng kh\u1edbp quang h\u1ecdc th\u01b0\u1eddng ch\u1ec9 xu\u1ea5t hi\u1ec7n khi c\u00f3 t\u1ea3i ho\u1eb7c \u1edf kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch QSFP+ LR4 (tr\u01b0\u1edbc khi mua)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi tri\u1ec3n khai QSFP+ 40GBASE-LR4, h\u00e3y x\u00e1c minh c\u00e1c \u0111i\u1ec1u sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Danh s\u00e1ch ki\u1ec3m tra ph\u1ea7n c\u1ee9ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng QSFP+ h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 40G<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111\u01a1n mode (OS2) s\u1eb5n c\u00f3<\/p><\/li>\n\n\n\n<li><p>C\u00e1c d\u00e2y n\u1ed1i LC duplex \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Danh s\u00e1ch ki\u1ec3m tra nh\u00e0 cung c\u1ea5p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un l\u00e0 <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceivers-msa-standards-guide\/\" target=\"_blank\" rel=\"\">MSA<\/a>-ph\u00f9 h\u1ee3p ti\u00eau chu\u1ea9n<\/p><\/li>\n\n\n\n<li><p>M\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ho\u1eb7c \u0111\u00e3 m\u1edf kh\u00f3a<\/p><\/li>\n\n\n\n<li><p>Ph\u1ea7n m\u1ec1m\u56fa\u4ef6 c\u1ee7a switch \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Danh s\u00e1ch ki\u1ec3m tra quang h\u1ecdc<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft n\u1eb1m trong gi\u1edbi h\u1ea1n 10 km<\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t n\u1eb1m trong dung sai (~6\u20139 dB)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u00f3 t\u1ed5n hao qu\u00e1 m\u1ee9c t\u1ea1i c\u00e1c m\u1ed1i n\u1ed1i\/k\u1ebft n\u1ed1i quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Danh s\u00e1ch ki\u1ec3m tra c\u1ea5u h\u00ecnh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng \u0111\u01b0\u1ee3c \u00e9p bu\u1ed9c \u1edf ch\u1ebf \u0111\u1ed9 40G<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng b\u1eadt c\u1ea5u h\u00ecnh chia t\u00e1ch (breakout)<\/p><\/li>\n\n\n\n<li><p>\u0110\u00e3 b\u1eadt ch\u1ea9n \u0111o\u00e1n quang h\u1ecdc (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\" target=\"_blank\" rel=\"\">DOM<\/a>)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a QSFP+ 40GBASE-LR4 kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 ph\u1ea7n c\u1ee9ng\u2014m\u00e0 l\u00e0 m\u1ed9t quy tr\u00ecnh x\u00e1c th\u1ef1c \u0111a l\u1edbp bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 ph\u1ea7n c\u1ee9ng<\/p><\/li>\n\n\n\n<li><p>H\u1ea1n ch\u1ebf ph\u1ea7n m\u1ec1m\u56fa\u4ef6 c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>tu\u00e2n th\u1ee7 MSA<br><\/p><\/li>\n\n\n\n<li><p>Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang h\u1ecdc<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u1ea5u h\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"> Trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf, ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 kh\u00f4ng b\u1eaft ngu\u1ed3n t\u1eeb ch\u00ednh m\u00f4-\u0111un, m\u00e0 do: c\u1ea5u h\u00ecnh sai, h\u1ea1n ch\u1ebf t\u1eeb nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 \u1edf t\u1ea7ng s\u1ee3i quang<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1edd \u0111\u00e2y, khi c\u00e1c r\u1ee7i ro v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111\u00e3 r\u00f5 r\u00e0ng, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 hi\u1ec3u c\u00e1ch ch\u1ecdn m\u1ed9t m\u00f4-\u0111un QSFP+ LR4 \u0111\u00e1ng tin c\u1eady nh\u1eb1m gi\u1ea3m thi\u1ec3u r\u1ee7i ro th\u1ea5t b\u1ea1i khi tri\u1ec3n khai v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc C\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 QSFP+ LR4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 QSFP+ 40GBASE-LR4 l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n quang h\u1ecdc tr\u01b0\u1edfng th\u00e0nh v\u00e0 \u0111\u01b0\u1ee3c tri\u1ec3n khai r\u1ed9ng r\u00e3i, nh\u01b0ng trong th\u1ef1c t\u1ebf, c\u00e1c l\u1eafp \u0111\u1eb7t th\u01b0\u1eddng g\u1eb7p ph\u1ea3i nh\u1eefng v\u1ea5n \u0111\u1ec1 kh\u00f4ng li\u00ean quan \u0111\u1ebfn thi\u1ebft k\u1ebf m\u00f4-\u0111un, m\u00e0 do c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang, c\u1ea5u h\u00ecnh ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng t\u1ea7ng v\u1eadt l\u00fd. Ph\u1ea7n n\u00e0y t\u1eadp trung v\u00e0o c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-troubleshooting-quick-checklist\/\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/a> th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 b\u00e1o c\u00e1o trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/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\/408072ee9f984646a0b617d00d35047f.jpg\" alt=\"Common Problems and Troubleshooting QSFP+ LR4\" class=\"wp-image-2717\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/408072ee9f984646a0b617d00d35047f.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/408072ee9f984646a0b617d00d35047f-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/408072ee9f984646a0b617d00d35047f-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/408072ee9f984646a0b617d00d35047f-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/408072ee9f984646a0b617d00d35047f-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 LR4 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng: C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi li\u00ean k\u1ebft QSFP+ LR4 kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c, s\u1ef1 c\u1ed1 th\u01b0\u1eddng thu\u1ed9c m\u1ed9t trong c\u00e1c danh m\u1ee5c sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>R\u00e0o c\u1ea3n t\u01b0\u01a1ng th\u00edch t\u1eeb nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u1ed5ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Switch kh\u00f4ng nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c quang module c\u1ee7a b\u00ean th\u1ee9 ba<\/p><\/li>\n\n\n\n<li><p>C\u1ed5ng b\u1ecb kh\u00f3a \u0111\u1ec3 ch\u1ec9 ch\u1ea5p nh\u1eadn transceiver c\u00f3 m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t g\u1ed1c (OEM)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng kh\u1edbp ph\u1ea7n m\u1ec1m\u56fa\u4ef6 sau khi n\u00e2ng c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ho\u1eb7c l\u1ed7i \u201ctransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u1ea5u h\u00ecnh c\u1ed5ng kh\u00f4ng \u0111\u00fang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng ch\u01b0a \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u1edf ch\u1ebf \u0111\u1ed9 40G<\/p><\/li>\n\n\n\n<li><p>V\u00f4 t\u00ecnh b\u1eadt ch\u1ebf \u0111\u1ed9 chia t\u00e1ch (breakout) (c\u1ea5u h\u00ecnh chia th\u00e0nh 4\u00d710G)<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00f4ng kh\u1edbp trong th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ef1 \u0111\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft v\u1eabn xu\u1ed1ng m\u1eb7c d\u00f9 \u0111\u00e3 ph\u00e1t hi\u1ec7n quang h\u1ecdc<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea5t c\u00e2n b\u1eb1ng c\u00f4ng su\u1ea5t quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t qu\u00e1 th\u1ea5p ho\u1eb7c qu\u00e1 t\u1ea3i \u1edf \u0111\u1ea7u thu<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 suy hao s\u1ee3i quang v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ec3u hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft nh\u1ea5p nh\u00e1y ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi t\u1ea3i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 Kh\u00f4ng t\u01b0\u01a1ng th\u00edch s\u1ee3i quang (<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> V\u1ea5n \u0111\u1ec1)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng sai l\u1ea7m tri\u1ec3n khai ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng sai lo\u1ea1i s\u1ee3i quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00f4-\u0111un QSFP+ LR4 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>S\u1ee3i quang \u0111\u01a1n mode (SMF \/ OS2)<\/strong> ch\u1ec9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1ch s\u1eed d\u1ee5ng sai:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1p s\u1ee3i quang \u0111a mode (OM3 \/ OM4)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec1u x\u1ea3y ra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Suy hao t\u00edn hi\u1ec7u nghi\u00eam tr\u1ecdng<\/p><\/li>\n\n\n\n<li><p>H\u00e0nh vi li\u00ean k\u1ebft kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n<\/p><\/li>\n\n\n\n<li><p>\u0110\u00f4i khi c\u00f3 k\u1ebft n\u1ed1i m\u1ed9t ph\u1ea7n \u1edf kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh k\u1ef9 thu\u1eadt: Ngay c\u1ea3 khi li\u00ean k\u1ebft d\u01b0\u1eddng nh\u01b0 ho\u1ea1t \u0111\u1ed9ng t\u1ea1m th\u1eddi, n\u00f3 c\u0169ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 Lo ng\u1ea1i v\u1ec1 kho\u1ea3ng c\u00e1ch ng\u1eafn (V\u1ea5n \u0111\u1ec1 b\u1ea5t ng\u1edd nh\u01b0ng c\u00f3 th\u1eadt)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 LR4 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho kho\u1ea3ng c\u00e1ch l\u00ean \u0111\u1ebfn 10 km, nhi\u1ec1u k\u1ef9 s\u01b0 tri\u1ec3n khai n\u00f3 trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c k\u1ec7 trong trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i d\u01b0\u1edbi 10 m\u00e9t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Qu\u00e1 t\u1ea3i quang \u1edf \u0111\u1ea7u thu (t\u00edn hi\u1ec7u qu\u00e1 m\u1ea1nh)<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng \u1ed5n \u0111\u1ecbnh hi\u1ebfm g\u1eb7p \u1edf c\u00e1c li\u00ean k\u1ebft c\u00e2n b\u1eb1ng k\u00e9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra th\u1ef1c t\u1ebf:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ea7u h\u1ebft c\u00e1c <a href=\"https:\/\/www.l-p.com\/products\/482456.htm\" target=\"_self\">M\u00f4-\u0111un QSFP+ LR4<\/a> x\u1eed l\u00fd kho\u1ea3ng c\u00e1ch ng\u1eafn m\u00e0 kh\u00f4ng g\u1eb7p s\u1ef1 c\u1ed1<\/p><\/li>\n\n\n\n<li><p>Nh\u01b0ng c\u00e1c m\u00f4-\u0111un c\u0169 h\u01a1n ho\u1eb7c gi\u00e1 r\u1ebb c\u00f3 th\u1ec3 y\u00eau c\u1ea7u suy hao quang h\u1ecdc<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc chung: N\u1ebfu li\u00ean k\u1ebft c\u1ef1c k\u1ef3 ng\u1eafn (&lt;2\u20135 m), h\u00e3y x\u00e1c minh m\u1ee9c c\u00f4ng su\u1ea5t \u0111\u1ea7u thu b\u1eb1ng ch\u1ea9n \u0111o\u00e1n DOM<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 T\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u &amp; \u0111\u1ea7u n\u1ed1i b\u1ea9n (V\u1ea5n \u0111\u1ec1 b\u1ecb b\u1ecf qua nhi\u1ec1u nh\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong tri\u1ec3n khai th\u1ef1c t\u1ebf, nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y l\u1ed7i LR4 kh\u00f4ng ph\u1ea3i do m\u00f4-\u0111un \u2014 m\u00e0 l\u00e0 do \u0111\u01b0\u1eddng d\u1eabn s\u1ee3i quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 l\u1edbp v\u1eadt l\u00fd ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea7u n\u1ed1i LC b\u1ecb b\u1ea9n<\/p><\/li>\n\n\n\n<li><p>Ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1nh b\u00f3ng k\u00e9m<\/p><\/li>\n\n\n\n<li><p>U\u1ed1n cong vi m\u00f4 tr\u00ean c\u00e1p s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n th\u1ea5t m\u1ed1i n\u1ed1i qu\u00e1 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft kh\u1edfi \u0111\u1ed9ng nh\u01b0ng ng\u1eaft ng\u1eaft qu\u00e3ng<\/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<\/a> (BER)<\/p><\/li>\n\n\n\n<li><p>Nh\u1ea5p nh\u00e1y d\u01b0\u1edbi t\u1ea3i l\u01b0u l\u01b0\u1ee3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch t\u1ea5t c\u1ea3 \u0111\u1ea7u n\u1ed1i LC tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng k\u00ednh soi ki\u1ec3m tra n\u1ebfu c\u00f3 s\u1eb5n<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh u\u1ed1n cong c\u00e1p qu\u00e1 ch\u1eb7t (&lt; b\u00e1n k\u00ednh 30 mm)<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra l\u1ea1i b\u1eb1ng c\u00e1p n\u1ed1i chu\u1ea9n \u0111\u00e3 bi\u1ebft l\u00e0 t\u1ed1t<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 C\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n (G\u1ee1 l\u1ed7i \u1edf c\u1ea5p \u0111\u1ed9 k\u1ef9 s\u01b0)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 g\u1ee1 l\u1ed7i QSFP+ LR4 hi\u1ec7u qu\u1ea3, h\u00e3y s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/p>\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (TX)<\/p><\/li>\n\n\n\n<li><p>C\u00f4ng su\u1ea5t thu (RX)<\/p><\/li>\n\n\n\n<li><p>Nhi\u1ec7t \u0111\u1ed9<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>B\u1ed9 \u0111\u1ebfm l\u1ed7i giao di\u1ec7n<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-time-domain-reflectometer-fiber-fault-detection-guide\/\" target=\"_blank\" rel=\"\">OTDR<\/a> (\u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed s\u1ef1 c\u1ed1 s\u1ee3i quang)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b6 Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t (T\u1eeb c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean c\u00e1c m\u1ea1ng th\u1ef1c t\u1ebf, c\u00e1c s\u1ef1 c\u1ed1 LR4 th\u01b0\u1eddng ph\u00e2n b\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>50\u201360% \u2192 V\u1ea5n \u0111\u1ec1 v\u1ec7 sinh s\u1ee3i quang \/ l\u1edbp v\u1eadt l\u00fd<\/p><\/li>\n\n\n\n<li><p>20\u201330% \u2192 C\u1ea5u h\u00ecnh \/ c\u00e0i \u0111\u1eb7t c\u1ed5ng<\/p><\/li>\n\n\n\n<li><p>10\u201320% \u2192 T\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p \/ v\u1ea5n \u0111\u1ec1 m\u00e3 h\u00f3a<\/p><\/li>\n\n\n\n<li><p>&lt;10% \u2192 S\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf c\u1ee7a b\u1ed9 thu ph\u00e1t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft lu\u1eadn: Ph\u1ea7n l\u1edbn c\u00e1c \u201cs\u1ef1 c\u1ed1\u201d LR4 kh\u00f4ng ph\u1ea3i do v\u1ea5n \u0111\u1ec1 thi\u1ebft k\u1ebf quang h\u1ecdc\u2014m\u00e0 l\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng tri\u1ec3n khai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1edd \u0111\u00e2y, khi c\u00e1c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn v\u00e0 ph\u01b0\u01a1ng ph\u00e1p kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111\u00e3 r\u00f5 r\u00e0ng, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 hi\u1ec3u c\u00e1ch ch\u1ecdn module QSFP+ 40GBASE-LR4 \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 tr\u00e1nh nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y ngay t\u1eeb tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc C\u00e1ch ch\u1ecdn module QSFP+ 40GBASE-LR4 \u0111\u00e1ng tin c\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn \u0111\u00fang module QSFP+ <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482486.htm\">module 40GBASE-LR4<\/a> kh\u00f4ng ch\u1ec9 l\u00e0 quy\u1ebft \u0111\u1ecbnh mua s\u1eafm\u2014m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u1ea1ng, th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n. V\u1edbi nhi\u1ec1u l\u1ef1a ch\u1ecdn t\u1eeb b\u00ean th\u1ee9 ba v\u00e0 OEM tr\u00ean th\u1ecb tr\u01b0\u1eddng, k\u1ef9 s\u01b0 ph\u1ea3i \u0111\u00e1nh gi\u00e1 c\u1ea3 y\u1ebfu t\u1ed1 tu\u00e2n th\u1ee7 k\u1ef9 thu\u1eadt l\u1eabn \u0111\u1ed9 tin c\u1eady trong th\u1ef1c t\u1ebf tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc.jpg\" alt=\"How to Choose a Reliable QSFP+ 40GBASE-LR4 Module\" class=\"wp-image-2718\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cafe44c08b94bbd92ab88f8d79d5ecc-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u00e1nh \u0111\u1ed5i gi\u1eefa hi\u1ec7u n\u0103ng v\u00e0 chi ph\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ch\u1ecdn module QSFP+ LR4, ng\u01b0\u1eddi mua th\u01b0\u1eddng thu\u1ed9c m\u1ed9t trong ba nh\u00f3m sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Linh ki\u1ec7n quang h\u1ecdc b\u00ean th\u1ee9 ba gi\u00e1 th\u1ea5p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u01afu \u0111i\u1ec3m: Chi ph\u00ed h\u1ee3p l\u00fd, s\u1eb5n c\u00f3 r\u1ed9ng r\u00e3i<\/p><\/li>\n\n\n\n<li><p>Nh\u01b0\u1ee3c \u0111i\u1ec3m: R\u1ee7i ro t\u01b0\u01a1ng th\u00edch cao, ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Module nh\u00e3n hi\u1ec7u OEM (nguy\u00ean b\u1ea3n Cisco\/Juniper)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u01afu \u0111i\u1ec3m: T\u01b0\u01a1ng th\u00edch t\u1ed1i \u0111a, h\u1ed7 tr\u1ee3 \u0111\u1ea3m b\u1ea3o<\/p><\/li>\n\n\n\n<li><p>Nh\u01b0\u1ee3c \u0111i\u1ec3m: Chi ph\u00ed cao, ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Linh ki\u1ec7n quang h\u1ecdc t\u01b0\u01a1ng th\u00edch ch\u1ea5t l\u01b0\u1ee3ng cao tu\u00e2n th\u1ee7 MSA (\u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u01afu \u0111i\u1ec3m: C\u00e2n b\u1eb1ng chi ph\u00ed, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c m\u1ea1nh, hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>Nh\u01b0\u1ee3c \u0111i\u1ec3m: Y\u00eau c\u1ea7u l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p c\u1ea9n tr\u1ecdng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Khuy\u1ebfn ngh\u1ecb k\u1ef9 thu\u1eadt: \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u, module LR4 b\u00ean th\u1ee9 ba tu\u00e2n th\u1ee7 MSA mang l\u1ea1i t\u1ef7 l\u1ec7 ho\u00e0n v\u1ed1n \u0111\u1ea7u t\u01b0 (ROI) t\u1ed1t nh\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi\u1ebfn l\u01b0\u1ee3c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p (tr\u00e1nh r\u1ee7i ro s\u1ef1 c\u1ed1)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ch\u1ecdn \u0111\u00fang nh\u00e0 cung c\u1ea5p quan tr\u1ecdng ngang b\u1eb1ng ch\u00ednh module.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u1ea7n l\u01b0u \u00fd nh\u1eefng y\u1ebfu t\u1ed1 sau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed3 s\u01a1 th\u00e0nh t\u00edch \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh trong l\u0129nh v\u1ef1c b\u1ed9 thu ph\u00e1t quang<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra s\u1ea3n xu\u1ea5t nghi\u00eam ng\u1eb7t (ch\u1ea1y th\u1eed, ki\u1ec3m tra ch\u1ecbu t\u1ea3i)<\/p><\/li>\n\n\n\n<li><p>Tu\u00e2n th\u1ee7 r\u00f5 r\u00e0ng v\u1edbi <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ieee-institute-of-electrical-and-electronics-engineers\/\" target=\"_blank\" rel=\"\">Ti\u00eau chu\u1ea9n IEEE<\/a><\/p><\/li>\n\n\n\n<li><p>H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt chuy\u00ean s\u00e2u v\u00e0 ch\u00ednh s\u00e1ch \u0111\u1ed5i tr\u1ea3 (RMA) minh b\u1ea1ch<\/p><\/li>\n\n\n\n<li><p>Danh s\u00e1ch t\u01b0\u01a1ng th\u00edch th\u1ef1c t\u1ebf (kh\u00f4ng ph\u1ea3i c\u00e1c tuy\u00ean b\u1ed1 ti\u1ebfp th\u1ecb chung chung)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o c\u1ea7n tr\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebfu minh b\u1ea1ch v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng h\u1ed7 tr\u1ee3 b\u00e1o c\u00e1o DOM<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebfu ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7<\/p><\/li>\n\n\n\n<li><p>\u201cC\u00e1c tuy\u00ean b\u1ed1 \u201dt\u01b0\u01a1ng th\u00edch to\u00e0n c\u1ea7u\u201d m\u00e0 kh\u00f4ng c\u00f3 b\u1eb1ng ch\u1ee9ng ki\u1ec3m tra<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra tr\u01b0\u1edbc khi tri\u1ec3n khai (b\u01b0\u1edbc then ch\u1ed1t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 c\u00e1c module QSFP+ LR4 ch\u1ea5t l\u01b0\u1ee3ng cao c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy tr\u00ecnh x\u00e1c th\u1ef1c t\u1eebng b\u01b0\u1edbc:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra v\u1eadt l\u00fd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i LC<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u00f3 h\u01b0 h\u1ecfng s\u1ee3i quang ho\u1eb7c b\u1ee5i r\u00f5 r\u00e0ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra ph\u00e1t hi\u1ec7n giao di\u1ec7n<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn m\u00f4-\u0111un \u0111\u01b0\u1ee3c c\u00f4ng t\u1eafc nh\u1eadn di\u1ec7n<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra tr\u1ea1ng th\u00e1i m\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra c\u00f4ng su\u1ea5t quang (DOM)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t TX\/RX n\u1eb1m trong ph\u1ea1m vi d\u1ef1 ki\u1ebfn<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng c\u00f3 t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i ho\u1eb7c thi\u1ebfu c\u00f4ng su\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra ch\u1ecbu t\u1ea3i<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ea1y l\u01b0u l\u01b0\u1ee3ng trong th\u1eddi gian d\u00e0i<\/p><\/li>\n\n\n\n<li><p>Gi\u00e1m s\u00e1t hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y li\u00ean k\u1ebft ho\u1eb7c t\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p (n\u1ebfu \u00e1p d\u1ee5ng)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c trong m\u00f4i tr\u01b0\u1eddng h\u1ed7n h\u1ee3p<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi t\u1ea3i th\u1ef1c t\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">M\u00f4-\u0111un QSFP+ 40GBASE-LR4 \u0111\u00e1ng tin c\u1eady nh\u1ea5t kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 m\u00f4-\u0111un \u0111\u1eaft nh\u1ea5t\u2014m\u00e0 l\u00e0 m\u00f4-\u0111un tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7, \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u00fang c\u00e1ch v\u00e0 ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f4ng t\u1eafc c\u1ee7a b\u1ea1n.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi \u0111\u00e3 l\u1ef1a ch\u1ecdn v\u00e0 x\u00e1c th\u1ef1c xong, b\u01b0\u1edbc cu\u1ed1i c\u00f9ng l\u00e0 hi\u1ec3u c\u00e1ch t\u1ea5t c\u1ea3 c\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 th\u01b0\u01a1ng m\u1ea1i h\u1ed9i t\u1ee5 \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh tri\u1ec3n khai \u0111\u00fang \u0111\u1eafn cho m\u1ea1ng QSFP+ 40GBASE-LR4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc QSFP+ 40GBASE-LR4 v\u1eabn c\u00f2n gi\u00e1 tr\u1ecb hay kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi m\u1ea1ng l\u01b0\u1edbi nhanh ch\u00f3ng ti\u1ebfn h\u00f3a h\u01b0\u1edbng t\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">100G<br><\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26224-200g-qsfp-dd-qsfp56.htm\">200G<\/a>, v\u00e0 th\u1eadm ch\u00ed cao h\u01a1n n\u1eefa, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm\">400G<\/a> c\u00e1c ki\u1ebfn tr\u00fac, nhi\u1ec1u k\u1ef9 s\u01b0 v\u00e0 \u0111\u1ed9i ng\u0169 mua s\u1eafm \u0111\u1eb7t ra m\u1ed9t c\u00e2u h\u1ecfi then ch\u1ed1t: li\u1ec7u QSFP+ 40GBASE-LR4 v\u1eabn c\u00f2n l\u00e0 kho\u1ea3n \u0111\u1ea7u t\u01b0 kh\u1ea3 thi?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u tr\u1ea3 l\u1eddi ph\u1ee5 thu\u1ed9c v\u00e0o quy m\u00f4 tri\u1ec3n khai, chi\u1ebfn l\u01b0\u1ee3c v\u00f2ng \u0111\u1eddi v\u00e0 m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n h\u1eefu. D\u00f9 40G kh\u00f4ng c\u00f2n l\u00e0 ti\u00eau chu\u1ea9n m\u1edbi nh\u1ea5t, LR4 v\u1eabn r\u1ea5t ph\u00f9 h\u1ee3p trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u 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\/9e41060a88e941789c832cdd4f835d9b.jpg\" alt=\"Is QSFP+ 40GBASE-LR4 Still Worth It?\" class=\"wp-image-2719\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e41060a88e941789c832cdd4f835d9b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e41060a88e941789c832cdd4f835d9b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e41060a88e941789c832cdd4f835d9b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e41060a88e941789c832cdd4f835d9b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e41060a88e941789c832cdd4f835d9b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00e2n t\u00edch xu h\u01b0\u1edbng 40G so v\u1edbi 100G<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u00e0nh c\u00f4ng nghi\u1ec7p r\u00f5 r\u00e0ng \u0111ang chuy\u1ec3n d\u1ecbch sang c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc c\u00f3 b\u0103ng th\u00f4ng cao h\u01a1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>100G (<a href=\"https:\/\/www.l-p.com\/products\/488452.htm\" target=\"_self\">QSFP28<br><\/a>) hi\u1ec7n l\u00e0 ti\u00eau chu\u1ea9n ch\u1ee7 \u0111\u1ea1o cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u x\u00e2y m\u1edbi<\/p><\/li>\n\n\n\n<li><p>40G (<a href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\" target=\"_self\">QSFP+<\/a>) ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng c\u0169 v\u00e0 c\u00e1c l\u1edbp t\u1ed5ng h\u1ee3p c\u1ea5p trung<\/p><\/li>\n\n\n\n<li><p>C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 quy m\u00f4 l\u1edbn (hyperscaler) \u0111ang chuy\u1ec3n sang 200G\/400G cho ki\u1ebfn tr\u00fac spine-core<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u. Nhi\u1ec1u m\u1ea1ng v\u1eabn v\u1eadn h\u00e0nh trong m\u00f4i tr\u01b0\u1eddng h\u1ed7n h\u1ee3p t\u1ed1c \u0111\u1ed9 do:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chu k\u1ef3 n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng k\u00e9o d\u00e0i (5\u201310 n\u0103m)<\/p><\/li>\n\n\n\n<li><p>H\u1ea1n ch\u1ebf v\u1ec1 chi ph\u00ed trong l\u0129nh v\u1ef1c CNTT doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>H\u1ea1n ch\u1ebf t\u1eeb c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang hi\u1ec7n h\u1eefu<\/p><\/li>\n\n\n\n<li><p>N\u00e2ng c\u1ea5p x\u01b0\u01a1ng s\u1ed1ng t\u1eebng b\u01b0\u1edbc thay v\u00ec thay th\u1ebf to\u00e0n b\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t: C\u00f4ng ngh\u1ec7 40G kh\u00f4ng bi\u1ebfn m\u1ea5t\u2014m\u00e0 \u0111ang \u1ed5n \u0111\u1ecbnh nh\u01b0 m\u1ed9t l\u1edbp t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c thi\u1ebft y\u1ebfu nh\u01b0ng \u0111\u00e3 tr\u1edf th\u00e0nh chu\u1ea9n c\u0169.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o QSFP+ 40GBASE-LR4 v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 c\u00f3 c\u00e1c chu\u1ea9n m\u1edbi h\u01a1n, LR4 v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn m\u1ea1nh trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea1ng l\u00f5i n\u1ed9i b\u1ed9 doanh nghi\u1ec7p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 trong ph\u1ea1m vi l\u00ean \u0111\u1ebfn 10 km<\/p><\/li>\n\n\n\n<li><p>C\u00e1c li\u00ean k\u1ebft t\u1ed5ng h\u1ee3p \u1ed5n \u0111\u1ecbnh \u1edf kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI \u2013 quy m\u00f4 trung b\u00ecnh)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i gi\u1eefa c\u00e1c khu v\u1ef1c x\u1eed l\u00fd d\u1eef li\u1ec7u ri\u00eang bi\u1ec7t ho\u1eb7c c\u00e1c c\u01a1 s\u1edf g\u1ea7n nhau<\/p><\/li>\n\n\n\n<li><p>Gi\u1ea3i ph\u00e1p thay th\u1ebf ti\u1ebft ki\u1ec7m chi ph\u00ed so v\u1edbi 100G tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>N\u00e2ng c\u1ea5p t\u1ed1i \u01b0u ng\u00e2n s\u00e1ch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00e1i s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng QSFP+ hi\u1ec7n c\u00f3<\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh vi\u1ec7c di chuy\u1ec3n to\u00e0n b\u1ed9 sang QSFP28<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea1ng \u0111a th\u1ebf h\u1ec7<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4i tr\u01b0\u1eddng lai v\u1edbi s\u1ef1 \u0111\u1ed3ng t\u1ed3n t\u1ea1i c\u1ee7a 10G \/ 40G \/ 100G<\/p><\/li>\n\n\n\n<li><p>C\u00e1c chi\u1ebfn l\u01b0\u1ee3c di chuy\u1ec3n t\u1eebng b\u01b0\u1edbc<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khung ra quy\u1ebft \u0111\u1ecbnh n\u00e2ng c\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi ch\u1ecdn LR4, h\u00e3y \u0111\u00e1nh gi\u00e1 m\u1ea1ng c\u1ee7a b\u1ea1n b\u1eb1ng khung th\u1ef1c ti\u1ec5n n\u00e0y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u b\u0103ng th\u00f4ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u1ebfu l\u01b0u l\u01b0\u1ee3ng li\u00ean t\u1ee5c &lt; 30\u201335 Gbps \u2192 <a href=\"https:\/\/www.l-p.com\/products\/482487.htm\" target=\"_self\">40G LR4<\/a> l\u00e0 \u0111\u1ee7<\/p><\/li>\n\n\n\n<li><p>N\u1ebfu d\u1ef1 ki\u1ebfn t\u0103ng tr\u01b0\u1edfng v\u01b0\u1ee3t qu\u00e1 50 Gbps \u2192 c\u00e2n nh\u1eafc 100G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ed5ng QSFP+ hi\u1ec7n c\u00f3 \u2192 LR4 mang t\u00ednh chi ph\u00ed hi\u1ec7u qu\u1ea3<\/p><\/li>\n\n\n\n<li><p>Tri\u1ec3n khai m\u1edbi \u2192 kh\u1ea3 n\u0103ng b\u1ea3o \u0111\u1ea3m t\u01b0\u01a1ng lai c\u1ee7a 100G t\u1ed1t h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00ean \u0111\u1ebfn 10 km c\u00e1p s\u1ee3i quang \u0111\u01a1n mode \u2192 LR4 l\u00fd t\u01b0\u1edfng<\/p><\/li>\n\n\n\n<li><p>Dung l\u01b0\u1ee3ng cao h\u01a1n tr\u00ean c\u00f9ng kho\u1ea3ng c\u00e1ch \u2192 <a href=\"https:\/\/www.l-p.com\/products\/488423.\" target=\"_self\">100G LR4<\/a>c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf \/ER4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ng\u00e2n s\u00e1ch so v\u1edbi chi\u1ebfn l\u01b0\u1ee3c v\u00f2ng \u0111\u1eddi<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed ng\u1eafn h\u1ea1n \u2192 40G chi\u1ebfm \u01b0u th\u1ebf<\/p><\/li>\n\n\n\n<li><p>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u00e0i h\u1ea1n \u2192 100G \u0111\u01b0\u1ee3c \u01b0u ti\u00ean<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ea1ng c\u1ee7a b\u1ea1n v\u1eabn \u0111ang v\u1eadn h\u00e0nh tr\u00ean c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng QSFP+, 40GBASE-LR4 v\u1eabn l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p th\u1ef1c ti\u1ec5n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed cho vi\u1ec7c truy\u1ec1n d\u1eabn quang \u1ed5n \u0111\u1ecbnh \u1edf kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, n\u1ebfu b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch cho m\u1ed9t ki\u1ebfn tr\u00fac m\u1edbi ho\u1eb7c n\u00e2ng c\u1ea5p l\u1edbn, h\u00e3y c\u00e2n nh\u1eafc \u0111\u00e1nh gi\u00e1 vi\u1ec7c di chuy\u1ec3n t\u1eebng b\u01b0\u1edbc sang Ethernet 100G \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi k\u1ef9 s\u01b0 v\u00e0 \u0111\u1ed9i ng\u0169 mua h\u00e0ng \u0111ang t\u00ecm ki\u1ebfm c\u00e1c module QSFP+ LR4 \u0111\u00e1ng tin c\u1eady, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA, v\u1edbi hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1ea1nh m\u1ebd <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/interoperability-in-networking-meaning-standards-connectivity\/\">kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/a>, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady t\u1ea1i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eadn \u0111\u1ecbnh k\u1ef9 thu\u1eadt cu\u1ed1i c\u00f9ng<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">QSFP+ 40GBASE-LR4 kh\u00f4ng c\u00f2n l\u00e0 \u201cti\u00eau chu\u1ea9n t\u01b0\u01a1ng lai\u201d, nh\u01b0ng v\u1eabn l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 c\u1ea7u n\u1ed1i chi\u1ebfn l\u01b0\u1ee3c ti\u1ebfp t\u1ee5c mang l\u1ea1i ROI m\u1ea1nh trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c k\u1ebf th\u1eeba.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ea1n c\u1ea7n c\u00e1c k\u1ebft n\u1ed1i \u1edf kho\u1ea3ng c\u00e1ch xa 10 km<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n mu\u1ed1n m\u1edf r\u1ed9ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng QSFP+ hi\u1ec7n c\u00f3<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n y\u00eau c\u1ea7u k\u1ebft n\u1ed1i n\u1ec1n t\u1ea3ng hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 QSFP+ 40GBASE-LR4<\/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\/db2eb27fb64a451b83684998ab16bdd0.jpg\" alt=\"QSFP+ 40GBASE-LR4 FAQ\" class=\"wp-image-2720\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/db2eb27fb64a451b83684998ab16bdd0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/db2eb27fb64a451b83684998ab16bdd0-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/db2eb27fb64a451b83684998ab16bdd0-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/db2eb27fb64a451b83684998ab16bdd0-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/db2eb27fb64a451b83684998ab16bdd0-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">LR4 c\u00f3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1p s\u1ee3i quang \u0111a mode kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00f4ng. QSFP+ 40GBASE-LR4 ch\u1ec9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho c\u00e1p s\u1ee3i quang \u0111\u01a1n mode (SMF \/ OS2).<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LR4 s\u1eed d\u1ee5ng gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (4 t\u00edn hi\u1ec7u 10G), \u0111\u00f2i h\u1ecfi \u0111\u1eb7c t\u00ednh truy\u1ec1n d\u1eabn t\u1ed5n hao th\u1ea5p m\u00e0 c\u00e1p s\u1ee3i quang \u0111a mode (OM3\/OM4) kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p s\u1ee3i quang \u0111a mode c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u cao<\/p><\/li>\n\n\n\n<li><p>H\u00e0nh vi li\u00ean k\u1ebft kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n\n\n\n<li><p>Th\u1ea5t b\u1ea1i ho\u00e0n to\u00e0n c\u1ee7a li\u00ean k\u1ebft trong c\u00e1c c\u1ea5u h\u00ecnh kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u \u0111\u1ed1i v\u1edbi LR4 l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng c\u00f3 <strong>y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u nghi\u00eam ng\u1eb7t<\/strong> n\u00e0o \u0111\u1ed1i v\u1edbi LR4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, trong tri\u1ec3n khai th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea1m vi thi\u1ebft k\u1ebf \u0111i\u1ec3n h\u00ecnh: <strong>2 m \u0111\u1ebfn 10 km<\/strong><\/p><\/li>\n\n\n\n<li><p>C\u00e1c li\u00ean k\u1ebft r\u1ea5t ng\u1eafn (&lt;2\u20135 m) c\u00f3 th\u1ec3 g\u00e2y ra <strong>m\u1ea5t c\u00e2n b\u1eb1ng c\u00f4ng su\u1ea5t quang<\/strong> trong m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u1ebfu s\u1eed d\u1ee5ng c\u00e1p s\u1ee3i quang r\u1ea5t ng\u1eafn, h\u00e3y ki\u1ec3m tra <strong>DOM (Gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1)<br><\/strong> c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00f4ng su\u1ea5t RX n\u1eb1m trong gi\u1edbi h\u1ea1n an to\u00e0n.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">LR4 c\u00f3 h\u1ed7 tr\u1ee3 chia nh\u00e1nh (breakout) kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00f4ng, QSFP+ 40GBASE-LR4 kh\u00f4ng h\u1ed7 tr\u1ee3 chia nh\u00e1nh th\u00e0nh 4 k\u00eanh 10G m\u1ed9t c\u00e1ch b\u1ea3n \u0111\u1ecba.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 LR4 b\u00ean trong s\u1eed d\u1ee5ng 4 b\u01b0\u1edbc s\u00f3ng 10G, n\u00f3 l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c t\u1eadp h\u1ee3p th\u00e0nh m\u1ed9t li\u00ean k\u1ebft Ethernet 40G duy nh\u1ea5t<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u00e2n nh\u00e1nh ra nhi\u1ec1u c\u1ed5ng 10G<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u1ea7n chia nh\u00e1nh, h\u00e3y s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>QSFP+ SR4 v\u1edbi c\u00e1p chia nh\u00e1nh d\u1ef1a tr\u00ean \u0111\u1ea7u n\u1ed1i MPO<\/p><\/li>\n\n\n\n<li><p>Ho\u1eb7c ki\u1ebfn tr\u00fac SFP+ chuy\u00ean d\u1ee5ng 4\u00d710G<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module LR4 c\u00f3 c\u1ea7n b\u1ed9 suy gi\u1ea3m quang kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng th\u01b0\u1eddng l\u00e0 kh\u00f4ng, LR4 kh\u00f4ng y\u00eau c\u1ea7u b\u1ed9 suy gi\u1ea3m quang trong c\u00e1c tri\u1ec3n khai ti\u00eau chu\u1ea9n.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, b\u1ed9 suy gi\u1ea3m quang c\u00f3 th\u1ec3 c\u1ea7n thi\u1ebft trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p hi\u1ebfm g\u1eb7p khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t TX qu\u00e1 cao \u0111\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>X\u1ea3y ra qu\u00e1 t\u1ea3i RX trong c\u00e1c k\u1ebft n\u1ed1i c\u00e1p ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>C\u00e1c b\u1ed9 thu \u0111\u1ed9 nh\u1ea1y cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc th\u1ef1c ti\u1ec5n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u1ebfu c\u00f4ng su\u1ea5t RX v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u2192 th\u00eam b\u1ed9 suy gi\u1ea3m quang<\/p><\/li>\n\n\n\n<li><p>Ng\u01b0\u1ee3c l\u1ea1i \u2192 kh\u00f4ng c\u1ea7n suy gi\u1ea3m \u0111\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft ti\u00eau chu\u1ea9n 10 km<\/p><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt QSFP+ 40GBASE-LR4, gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch, m\u1eb9o v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 l\u1eddi khuy\u00ean khi mua. Tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 tri\u1ec3n khai ph\u1ed5 bi\u1ebfn v\u1edbi h\u01b0\u1edbng d\u1eabn chuy\u00ean s\u00e2u n\u00e0y.<\/p>","protected":false},"author":1,"featured_media":2721,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[18],"class_list":["post-2722","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-40g-qsfp-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2722","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=2722"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2722\/revisions"}],"predecessor-version":[{"id":10718,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2722\/revisions\/10718"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2721"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}