{"id":4708,"date":"2025-10-15T11:12:00","date_gmt":"2025-10-15T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/rdma-over-converged-ethernet-fast-low-latency-data-transfer\/"},"modified":"2026-06-22T06:19:58","modified_gmt":"2026-06-22T06:19:58","slug":"rdma-over-converged-ethernet-fast-low-latency-data-transfer","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/rdma-over-converged-ethernet-fast-low-latency-data-transfer","title":{"rendered":"Khai ph\u00f3ng ti\u1ec1m n\u0103ng m\u1ea1ng c\u1ee7a b\u1ea1n: Ph\u00e2n t\u00edch chuy\u00ean s\u00e2u v\u1ec1 RoCE (RDMA tr\u00ean Ethernet h\u1ed9i t\u1ee5)"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1408\" height=\"768\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f.jpg\" alt=\"What is RDMA over Converged Ethernet\" class=\"wp-image-4706\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f.jpg 1408w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f-300x164.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f-1024x559.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f-768x419.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/df1f7807f7af4013a163b0d1cbcc4e1f-18x10.jpg 18w\" sizes=\"(max-width: 1408px) 100vw, 1408px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi l\u1ea5y d\u1eef li\u1ec7u l\u00e0m trung t\u00e2m ng\u00e0y nay, n\u01a1i t\u1eebng microgi\u00e2y \u0111\u1ec1u quan tr\u1ecdng v\u00e0 hi\u1ec7u n\u0103ng \u1ee9ng d\u1ee5ng l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh, c\u00e1c giao th\u1ee9c m\u1ea1ng truy\u1ec1n th\u1ed1ng \u0111ang ch\u1ea1m \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee7a ch\u00fang. H\u00e3y ch\u00e0o \u0111\u00f3n <strong>RoCE (RDMA tr\u00ean Ethernet h\u1ed9i t\u1ee5)<br><\/strong>, m\u1ed9t c\u00f4ng ngh\u1ec7 mang t\u00ednh \u0111\u1ed9t ph\u00e1, mang l\u1ea1i t\u1ed1c \u0111\u1ed9 c\u1ef1c cao v\u00e0 \u0111\u1ed9 tr\u1ec5 c\u1ef1c th\u1ea5p cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch r\u00f5 v\u1ec1 RoCE, kh\u00e1m ph\u00e1 hai phi\u00ean b\u1ea3n c\u1ee7a n\u00f3 v\u00e0 cho b\u1ea1n th\u1ea5y c\u00e1ch c\u00f4ng ngh\u1ec7 n\u00e0y \u0111ang c\u00e1ch m\u1ea1ng h\u00f3a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-hpc-high-performance-computing\/\"><strong>t\u00ednh to\u00e1n hi\u1ec7u su\u1ea5t cao (HPC)<\/strong><\/a>, <strong>C\u00f4ng vi\u1ec7c t\u1ea3i AI\/ML<\/strong>, <strong>v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/strong>. Ch\u00fang ta c\u0169ng s\u1ebd \u0111i s\u00e2u v\u00e0o m\u1ed9t th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng then ch\u1ed1t: b\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang h\u1ecdc (optical transceiver), \u0111\u1ed3ng th\u1eddi nh\u1ea5n m\u1ea1nh c\u00e1ch m\u1ed9t gi\u1ea3i ph\u00e1p nh\u01b0 <strong>LINK-PP 800G QSFP-DD SR8<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nh\u1eefng y\u00eau c\u1ea7u kh\u1eaft khe nh\u1ea5t n\u00e0y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 RoCE l\u00e0 g\u00ec? Lo\u1ea1i b\u1ecf chi ph\u00ed x\u1eed l\u00fd m\u1ea1ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, RoCE l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>RDMA qua Ethernet h\u1ed9i t\u1ee5<\/strong>. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n, tr\u01b0\u1edbc ti\u00ean ta c\u1ea7n ph\u00e2n t\u00edch RDMA.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/remote-direct-memory-access-rdma-data-transfer-speed-latency\/\"><strong>RDMA (Truy c\u1eadp b\u1ed9 nh\u1edb tr\u1ef1c ti\u1ebfp t\u1eeb xa)<\/strong><\/a><strong>:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 cho ph\u00e9p m\u1ed9t m\u00e1y t\u00ednh truy c\u1eadp b\u1ed9 nh\u1edb tr\u00ean m\u1ed9t m\u00e1y t\u00ednh t\u1eeb xa <strong>m\u00e0 kh\u00f4ng c\u1ea7n tham gia c\u1ee7a CPU ho\u1eb7c h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/strong>. Vi\u1ec7c \u201cb\u1ecf qua nh\u00e2n h\u1ec7 \u0111i\u1ec1u h\u00e0nh\u201d (kernel bypass) n\u00e0y ch\u00ednh l\u00e0 \u201cb\u00ed quy\u1ebft\u201d gi\u00fap lo\u1ea1i b\u1ecf \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 v\u00e0 chi ph\u00ed x\u1eed l\u00fd CPU.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Tr\u00ean n\u1ec1n t\u1ea3ng Ethernet h\u1ed9i t\u1ee5:<\/strong> RoCE \u0111\u01b0a kh\u1ea3 n\u0103ng RDMA m\u1ea1nh m\u1ebd n\u00e0y l\u00ean ch\u1ea1y tr\u00ean c\u00e1c m\u1ea1ng Ethernet ti\u00eau chu\u1ea9n. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf l\u1edbn, v\u00ec n\u00f3 cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Ethernet hi\u1ec7n c\u00f3 thay v\u00ec ph\u1ea3i \u0111\u1ea7u t\u01b0 v\u00e0o c\u00e1c m\u1ea1ng chuy\u00ean bi\u1ec7t \u0111\u1eaft \u0111\u1ecf nh\u01b0 InfiniBand.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ee3i \u00edch ch\u00ednh l\u00e0 g\u00ec? <strong>\u0110\u1ed9 tr\u1ec5 c\u1ef1c th\u1ea5p v\u00e0 th\u00f4ng l\u01b0\u1ee3ng c\u1ef1c cao.<\/strong> B\u1eb1ng c\u00e1ch b\u1ecf qua ng\u0103n x\u1ebfp TCP\/IP v\u00e0 CPU t\u1eeb xa, vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u tr\u1edf th\u00e0nh thao t\u00e1c tr\u1ef1c ti\u1ebfp gi\u1eefa b\u1ed9 nh\u1edb v\u1edbi b\u1ed9 nh\u1edb, gi\u1ea3i ph\u00f3ng c\u00e1c chu k\u1ef3 CPU qu\u00fd b\u00e1u cho \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 RoCE v1 so v\u1edbi RoCE v2: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 <strong>RoCE<\/strong> kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 \u0111\u1ec1u nh\u01b0 nhau. C\u00f3 hai phi\u00ean b\u1ea3n ch\u00ednh, v\u00e0 vi\u1ec7c hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi thi\u1ebft k\u1ebf m\u1ea1ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>RoCE v1 (RoCE)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>RoCE v2 (RoCE c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh tuy\u1ebfn)<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i Ethernet<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ec9 \u1edf l\u1edbp 2 Ethernet<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ef1a tr\u00ean IP (UDP), l\u1edbp 3<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u1ea1m vi m\u1ea1ng<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1edbi h\u1ea1n trong m\u1ed9t mi\u1ec1n ph\u00e1t s\u00f3ng l\u1edbp 2 duy nh\u1ea5t (v\u00ed d\u1ee5: m\u1ed9t t\u1ee7 rack trung t\u00e2m d\u1eef li\u1ec7u).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 \u0111\u1ecbnh tuy\u1ebfn qua c\u00e1c m\u1ea1ng IP l\u1edbp 3 (to\u00e0n b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u).<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Linh ho\u1ea1t<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c c\u1ee5m hi\u1ec7u n\u0103ng cao kh\u00e9p k\u00edn.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y quy m\u00f4 l\u1edbn v\u00e0 linh ho\u1ea1t.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\"><strong>V\u00ec sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng?<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\"> \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai hi\u1ec7n \u0111\u1ea1i, quy m\u00f4 l\u1edbn, <\/span><span class=\"qc-p1-tag\"><strong>RoCE v2 l\u00e0 l\u1ef1a ch\u1ecdn r\u00f5 r\u00e0ng<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\">. T\u00ednh kh\u1ea3 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a n\u00f3 khi\u1ebfn RoCE v2 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y \u0111\u1ed9ng v\u00e0 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t th\u00fac \u0111\u1ea9y <\/span><span class=\"qc-p1-tag\"><strong>l\u01b0u tr\u1eef t\u00e1ch r\u1eddi v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng si\u00eau h\u1ed9i t\u1ee5<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\">.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 Ba tr\u1ee5 c\u1ed9t cho tri\u1ec3n khai RoCE th\u00e0nh c\u00f4ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tri\u1ec3n khai RoCE kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 c\u1eafm c\u00e1c card giao di\u1ec7n m\u1ea1ng (NIC) m\u1edbi v\u00e0o. N\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh c\u1ea9n th\u1eadn \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u n\u0103ng h\u1ee9a h\u1eb9n <strong>m\u1ea1ng \u0111\u1ed9 tr\u1ec5 th\u1ea5p<\/strong>. Ba tr\u1ee5 c\u1ed9t then ch\u1ed1t g\u1ed3m:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Ethernet kh\u00f4ng m\u1ea5t g\u00f3i:<\/strong> RoCE r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi vi\u1ec7c m\u1ea5t g\u00f3i. M\u1ed9t g\u00f3i duy nh\u1ea5t b\u1ecb m\u1ea5t c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c \u0111\u1ec9nh \u0111\u1ed9 tr\u1ec5 kh\u1ed5ng l\u1ed3 do giao th\u1ee9c ph\u1ea3i ch\u1edd t\u00e1i truy\u1ec1n. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t <strong>ki\u1ebfn tr\u00fac m\u1ea1ng kh\u00f4ng m\u1ea5t g\u00f3i<\/strong>, th\u01b0\u1eddng \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua <strong>Trung t\u00e2m d\u1eef li\u1ec7u n\u1ed1i c\u1ea7u (DCB)<\/strong> c\u00e1c c\u00f4ng ngh\u1ec7, \u0111\u1eb7c bi\u1ec7t l\u00e0 <strong>\u0110i\u1ec1u khi\u1ec3n lu\u1ed3ng \u01b0u ti\u00ean (PFC)<\/strong>. PFC t\u1ea1o ra m\u1ed9t \u201ck\u00eanh \u1ea3o kh\u00f4ng m\u1ea5t g\u00f3i\u201d d\u00e0nh ri\u00eang cho l\u01b0u l\u01b0\u1ee3ng RoCE, t\u1ea1m d\u1eebng c\u00e1c lo\u1ea1i l\u01b0u l\u01b0\u1ee3ng kh\u00e1c n\u1ebfu ph\u00e1t hi\u1ec7n t\u1eafc ngh\u1ebdn.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ph\u1ea7n c\u1ee9ng ph\u00f9 h\u1ee3p:<\/strong> B\u1ea1n c\u1ea7n c\u00e1c card giao di\u1ec7n m\u1ea1ng (NIC) h\u1ed7 tr\u1ee3 RoCE v\u00e0 c\u00e1c switch h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng DCB. Ch\u1ea5t l\u01b0\u1ee3ng ph\u1ea7n c\u1ee9ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh hi\u1ec7u n\u0103ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c:<\/strong> Vi\u1ec7c tri\u1ec3n khai <strong>Th\u00f4ng b\u00e1o t\u1eafc ngh\u1ebdn r\u00f5 r\u00e0ng (ECN)<\/strong> v\u00e0 c\u00e1c ch\u00ednh s\u00e1ch Qu\u1ea3n l\u00fd Ch\u1ea5t l\u01b0\u1ee3ng D\u1ecbch v\u1ee5 (QoS) ph\u00f9 h\u1ee3p l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ec3 duy tr\u00ec lu\u1ed3ng d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh trong m\u1ed9t <strong>c\u1ee5m t\u00ednh to\u00e1n hi\u1ec7u n\u0103ng cao<\/strong> .<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 Nh\u00e2n t\u1ed1 \u201cv\u00f4 danh\u201d: B\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang h\u1ecdc trong m\u1ea1ng RoCE<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff.webp\" alt=\"800G Optical Transceiver\" class=\"wp-image-4707\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/56259c7d67d14f839d95c4409b9280ff-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u1ea9y m\u1ea1ng l\u00ean gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i v\u1edbi <strong>RoCE<\/strong>, m\u1ecdi th\u00e0nh ph\u1ea7n \u0111\u1ec1u ph\u1ea3i t\u1ed1i \u01b0u. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang v\u1edbi <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a>\u2014c\u00e1c th\u00e0nh ph\u1ea7n chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. M\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u, nhi\u1ec5u (jitter) v\u00e0 l\u1ed7i, l\u00e0m suy gi\u1ea3m tr\u1ef1c ti\u1ebfp m\u1ee5c ti\u00eau \u0111\u1ed9 tr\u1ec5 th\u1ea5p c\u1ee7a RoCE.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u1ea1ng RoCE y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao nh\u1ea5t, b\u1ea1n c\u1ea7n c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u n\u0103ng. \u0110\u00e2y l\u00e0 l\u00fac vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p uy t\u00edn tr\u1edf n\u00ean quan tr\u1ecdng. V\u00ed d\u1ee5, <strong>LINK-PP 800G QSFP-DD SR8<\/strong> m\u00f4-\u0111un quang h\u1ecdc n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u01b0 v\u1eady. N\u00f3 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u 800 Gbps tr\u00ean c\u00e1p quang \u0111a mode, cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn s\u1ea1ch v\u00e0 r\u1ed9ng l\u1edbn c\u1ea7n thi\u1ebft cho <strong>kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c AI v\u00e0 h\u1ecdc m\u00e1y<\/strong> v\u1ed1n ph\u1ee5 thu\u1ed9c v\u00e0o RoCE \u0111\u1ec3 nh\u1eadp d\u1eef li\u1ec7u nhanh v\u00e0 hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1nh gi\u00e1 <strong>b\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang n\u00e0o t\u1ed1t nh\u1ea5t cho trung t\u00e2m d\u1eef li\u1ec7u giao d\u1ecbch t\u1ea7n s\u1ed1 cao ho\u1eb7c AI<\/strong>, c\u00e1c y\u1ebfu t\u1ed1 then ch\u1ed1t nh\u01b0 ti\u00eau th\u1ee5 \u0111i\u1ec7n th\u1ea5p, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao v\u00e0 tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. D\u00f2ng s\u1ea3n ph\u1ea9m <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a><strong> 800G<\/strong> \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t n\u00e0y, \u0111\u1ea3m b\u1ea3o r\u1eb1ng l\u1edbp v\u1eadt l\u00fd c\u1ee7a m\u1ea1ng b\u1ea1n s\u1ebd kh\u00f4ng tr\u1edf th\u00e0nh \u0111i\u1ec3m ngh\u1ebdn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 RoCE trong th\u1ef1c t\u1ebf: C\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng ngh\u1ec7 n\u00e0y \u0111ang t\u1ea1o ra t\u00e1c \u0111\u1ed9ng l\u1edbn nh\u1ea5t \u1edf \u0111\u00e2u?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng si\u00eau h\u1ed9i t\u1ee5 (HCI):<\/strong> C\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 VMware vSAN s\u1eed d\u1ee5ng RoCE \u0111\u1ec3 t\u0103ng t\u1ed1c l\u01b0u l\u01b0\u1ee3ng l\u01b0u tr\u1eef gi\u1eefa c\u00e1c n\u00fat, gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 I\/O.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>AI v\u00e0 H\u1ecdc m\u00e1y:<\/strong> Vi\u1ec7c hu\u1ea5n luy\u1ec7n c\u00e1c m\u00f4 h\u00ecnh ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi di chuy\u1ec3n c\u00e1c t\u1eadp d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 gi\u1eefa b\u1ed9 l\u01b0u tr\u1eef v\u00e0 c\u00e1c m\u00e1y ch\u1ee7 GPU. RoCE gi\u00fap gi\u1ea3m thi\u1ec3u th\u1eddi gian truy\u1ec1n d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 \u0111\u1ea9y nhanh to\u00e0n b\u1ed9 chu k\u1ef3 hu\u1ea5n luy\u1ec7n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>L\u01b0u tr\u1eef t\u00e1ch r\u1eddi:<\/strong> C\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 NVMe-of (NVMe qua m\u1ea1ng) th\u01b0\u1eddng s\u1eed d\u1ee5ng RoCE l\u00e0m l\u1edbp v\u1eadn chuy\u1ec3n, cung c\u1ea5p hi\u1ec7u n\u0103ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u01b0u tr\u1eef c\u1ee5c b\u1ed9 t\u1eeb c\u00e1c m\u1ea3ng l\u01b0u tr\u1eef t\u1eeb xa.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Giao d\u1ecbch t\u1ea7n s\u1ed1 cao (HFT):<\/strong> Trong l\u0129nh v\u1ef1c giao d\u1ecbch, t\u1eebng microgi\u00e2y \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb. RoCE cung c\u1ea5p \u0111\u1ed9 tr\u1ec5 c\u1ef1c th\u1ea5p v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ea1nh tranh.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 RoCE c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\"><strong>RoCE<\/strong> l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd, nh\u01b0ng \u0111\u00f2i h\u1ecfi chuy\u00ean m\u00f4n \u0111\u1ec3 tri\u1ec3n khai \u0111\u00fang c\u00e1ch. N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 tr\u1ec5 v\u00e0 b\u1ea1n \u0111ang g\u1eb7p ph\u1ea3i c\u00e1c \u0111i\u1ec3m ngh\u1ebdn CPU do x\u1eed l\u00fd m\u1ea1ng, RoCE ch\u1eafc ch\u1eafn x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 nghi\u00eam t\u00fac. Nh\u1eefng c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng cho c\u00e1c kh\u1ed1i c\u00f4ng vi\u1ec7c ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 mang t\u00ednh \u0111\u1ed9t ph\u00e1.<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>S\u1eb5n s\u00e0ng tr\u1ea3i nghi\u1ec7m s\u1ee9c m\u1ea1nh c\u1ee7a m\u1ed9t m\u1ea1ng th\u1ebf h\u1ec7 m\u1edbi?<\/strong> Vi\u1ec7c t\u1eadn d\u1ee5ng c\u00f4ng ngh\u1ec7 RoCE l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 x\u00e2y d\u1ef1ng trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, hi\u1ec7u n\u0103ng cao.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ea1ng Ethernet kh\u00f4ng m\u1ea5t g\u00f3i l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ea1ng Ethernet kh\u00f4ng m\u1ea5t g\u00f3i kh\u00f4ng l\u00e0m m\u1ea5t c\u00e1c g\u00f3i d\u1eef li\u1ec7u. B\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady. RoCE ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t tr\u00ean lo\u1ea1i m\u1ea1ng n\u00e0y. D\u1eef li\u1ec7u c\u1ee7a b\u1ea1n di chuy\u1ec3n tr\u01a1n tru v\u00e0 nhanh ch\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u1ea7n ph\u1ea7n c\u1ee9ng n\u00e0o \u0111\u1ec3 tri\u1ec3n khai RoCE?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n c\u00e1c card m\u1ea1ng h\u1ed7 tr\u1ee3 <strong>RDMA<\/strong>. C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ea1n n\u00ean h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng Ethernet kh\u00f4ng m\u1ea5t g\u00f3i nh\u01b0 \u0110i\u1ec1u khi\u1ec3n lu\u1ed3ng \u01b0u ti\u00ean (PFC). H\u1ea7u h\u1ebft thi\u1ebft b\u1ecb trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 RoCE.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec l\u00e0m cho RoCE kh\u00e1c bi\u1ec7t so v\u1edbi Ethernet th\u00f4ng th\u01b0\u1eddng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">RoCE cho ph\u00e9p b\u1ea1n di chuy\u1ec3n d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp gi\u1eefa b\u1ed9 nh\u1edb c\u1ee7a c\u00e1c m\u00e1y t\u00ednh. B\u1ea1n b\u1ecf qua CPU v\u00e0 c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd b\u1ed5 sung. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n so v\u1edbi Ethernet th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0o c\u00f3 th\u1ec3 x\u1ea3y ra v\u1edbi RoCE?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p s\u1ef1 c\u1ed1 n\u1ebfu m\u1ea1ng c\u1ee7a b\u1ea1n l\u00e0m m\u1ea5t g\u00f3i d\u1eef li\u1ec7u. Hi\u1ec7u n\u0103ng c\u00f3 th\u1ec3 suy gi\u1ea3m n\u1ebfu b\u1ea1n kh\u00f4ng c\u1ea5u h\u00ecnh \u0111\u00fang m\u1ea1ng Ethernet kh\u00f4ng m\u1ea5t g\u00f3i. B\u1ea1n n\u00ean ki\u1ec3m tra ph\u1ea7n c\u1ee9ng v\u00e0 c\u00e0i \u0111\u1eb7t c\u1ee7a m\u00ecnh \u0111\u1ec3 \u0111\u1ea1t k\u1ebft qu\u1ea3 t\u1ed1i \u01b0u.<\/p>","protected":false},"excerpt":{"rendered":"<p>RDMA tr\u00ean Ethernet h\u1ed9i t\u1ee5 (RDMA over Converged Ethernet) cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u nhanh v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p b\u1eb1ng ph\u1ea7n c\u1ee9ng Ethernet ti\u00eau chu\u1ea9n, gi\u1ea3m m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t m\u1ea1ng.<\/p>","protected":false},"author":1,"featured_media":4706,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[17,24,26],"class_list":["post-4708","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-400g-optical-modules","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4708","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=4708"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4708\/revisions"}],"predecessor-version":[{"id":11013,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4708\/revisions\/11013"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4706"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}