{"id":4388,"date":"2025-11-10T11:12:00","date_gmt":"2025-11-10T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/point-to-multipoint-p2mp-optical-networks\/"},"modified":"2026-06-22T05:17:20","modified_gmt":"2026-06-22T05:17:20","slug":"point-to-multipoint-p2mp-optical-networks","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/point-to-multipoint-p2mp-optical-networks","title":{"rendered":"Ki\u1ebfn tr\u00fac m\u1ea1ng quang \u0110i\u1ec3m-\u0111\u1ebfn-Nhi\u1ec1u (P2MP)"},"content":{"rendered":"<h2 class=\"wp-block-heading\" >\ud83c\udf10 \u0110\u1ecbnh ngh\u0129a \u0110i\u1ec3m-\u0111\u1ebfn-Nhi\u1ec1u<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5.webp\" alt=\"What is P2MP?\" class=\"wp-image-4385\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ea8a916cea164c39989047c8f8df0be5-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 P2MP l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong vi\u1ec5n th\u00f4ng, thu\u1eadt ng\u1eef <strong>\u0111i\u1ec3m-\u0111\u1ebfn-nhi\u1ec1u (P2MP)<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t c\u1ea5u tr\u00fac k\u1ebft n\u1ed1i m\u1ed9t-chi\u1ec1u-nhi\u1ec1u: m\u1ed9t <strong>tr\u1ea1m g\u1ed1c<\/strong> (ho\u1eb7c n\u00fat trung t\u00e2m) giao ti\u1ebfp v\u1edbi nhi\u1ec1u <strong>tr\u1ea1m l\u00e1<\/strong>. <br\/>Trong m\u00f4 h\u00ecnh P2MP, tr\u1ea1m g\u1ed1c truy\u1ec1n d\u1eef li\u1ec7u xu\u1ed1ng (downstream) t\u1edbi nhi\u1ec1u tr\u1ea1m l\u00e1 th\u00f4ng qua ph\u01b0\u01a1ng ti\u1ec7n chia s\u1ebb (v\u00ed d\u1ee5: \u0111\u01b0\u1eddng c\u00e1p ch\u00ednh c\u00f3 c\u00e1c nh\u00e1nh), v\u00e0 c\u00e1c tr\u1ea1m l\u00e1 c\u00f3 th\u1ec3 g\u1eedi d\u1eef li\u1ec7u l\u00ean (upstream) t\u1edbi tr\u1ea1m g\u1ed1c, nh\u01b0ng th\u01b0\u1eddng kh\u00f4ng g\u1eedi d\u1eef li\u1ec7u cho nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 So s\u00e1nh P2MP v\u00e0 P2P: S\u1ef1 kh\u00e1c bi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1ee3c l\u1ea1i, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/point-to-point-network-architecture-guide\/\"><strong>\u0111i\u1ec3m-\u0111\u1ebfn-\u0111i\u1ec3m (P2P)<\/strong><\/a> l\u00e0 li\u00ean k\u1ebft m\u1ed9t-chi\u1ec1u-m\u1ed9t gi\u1eefa c\u00e1c \u0111\u1ea7u cu\u1ed1i. <br\/><strong>P2MP<\/strong> H\u1ed7 tr\u1ee3 footprint hi\u1ec7u qu\u1ea3 khi m\u1ed9t ngu\u1ed3n duy nh\u1ea5t c\u1ea7n ph\u1ee5c v\u1ee5 nhi\u1ec1u \u0111\u00edch \u2014 \u0111\u1eb7c bi\u1ec7t trong c\u00e1c b\u1ed1i c\u1ea3nh truy nh\u1eadp, \u0111\u00f4 th\u1ecb ho\u1eb7c ph\u00e1t s\u00f3ng \u2014 trong khi P2P cung c\u1ea5p hi\u1ec7u n\u0103ng li\u00ean k\u1ebft chuy\u00ean d\u1ee5ng v\u00e0 s\u1ef1 c\u00f4 l\u1eadp.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25b7 Thu\u1eadt ng\u1eef v\u00e0 t\u00e0i li\u1ec7u ti\u00eau chu\u1ea9n tham kh\u1ea3o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u2011 N\u00fat g\u1ed1c \u0111\u00f4i khi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>c\u1ed5ng v\u00e0o<\/strong> ho\u1eb7c trung t\u00e2m (hub), c\u00f2n c\u00e1c n\u00fat l\u00e1 ho\u1eb7c <strong>c\u1ed5ng ra<\/strong> \u2011 Trong b\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt l\u01b0u l\u01b0\u1ee3ng (traffic engineering), m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn chuy\u1ec3n m\u1ea1ch nh\u00e3n (LSP) P2MP. <br\/>\u2011 Trong t\u00e0i li\u1ec7u v\u1ec1 m\u1ea1ng quang, P2MP c\u00f3 th\u1ec3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-mpls-multiprotocol-label-switching\/\">MPLS<\/a> ki\u1ebfn tr\u00fac ph\u00e2n nh\u00e1nh th\u1ee5 \u0111\u1ed9ng <strong>(label-switched path)<\/strong> ph\u1ea3i h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng ph\u00e2n nh\u00e1nh, gh\u00e9p n\u1ed1i v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c n\u00fat l\u00e1 m\u1ed9t c\u00e1ch quy m\u00f4. <br\/>ho\u1eb7c ki\u1ebfn tr\u00fac ph\u00e2n nh\u00e1nh ch\u1ee7 \u0111\u1ed9ng, n\u01a1i m\u1ed9t \u0111\u01b0\u1eddng c\u00e1p quang \u0111\u01a1n \u0111\u01b0\u1ee3c ph\u00e2n nh\u00e1nh t\u1edbi nhi\u1ec1u \u0111i\u1ec3m cu\u1ed1i. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/passive-optical-networks-what-they-are-and-how-they-work\/\">(PONs)<\/a> \ud83c\udf10 Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a P2MP trong m\u1ea1ng quang. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Ki\u1ebfn tr\u00fac c\u01a1 b\u1ea3n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >Trong m\u1ed9t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">m\u1ea1ng P2MP d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 quang <strong>, m\u1ed9t b\u1ed9 ph\u00e1t trung t\u00e2m (v\u00ed d\u1ee5: t\u1ea1i Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1eddng d\u00e2y quang \u2013 OLT) g\u1eedi t\u00edn hi\u1ec7u quang qua s\u1ee3i c\u00e1p ch\u00ednh, sau \u0111\u00f3 qua b\u1ed9 chia th\u1ee5 \u0111\u1ed9ng ho\u1eb7c b\u1ed9 ph\u00e2n nh\u00e1nh ch\u1ee7 \u0111\u1ed9ng t\u1edbi nhi\u1ec1u<\/strong>, n\u00fat xa (Remote Nodes). \u0110\u01b0\u1eddng truy\u1ec1n xu\u1ed1ng (downstream) \u0111\u01b0\u1ee3c chia s\u1ebb; l\u01b0u l\u01b0\u1ee3ng truy\u1ec1n l\u00ean (upstream) \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd nh\u1eb1m tr\u00e1nh va ch\u1ea1m (th\u00f4ng qua gh\u00e9p k\u00eanh ph\u00e2n chia theo th\u1eddi gian, chia s\u1ebb b\u01b0\u1edbc s\u00f3ng, v.v.). <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-onu-and-why-it-matters-for-your-internet-connection\/\">\u0110\u01a1n v\u1ecb m\u1ea1ng quang (ONU)<\/a> Ph\u01b0\u01a1ng ti\u1ec7n chia s\u1ebb v\u00e0 ph\u00e2n nh\u00e1nh. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m then ch\u1ed1t c\u1ee7a P2MP l\u00e0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ph\u01b0\u01a1ng ti\u1ec7n chia s\u1ebb <strong>: \u0111\u01b0\u1eddng truy\u1ec1n xu\u1ed1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t b\u01b0\u1edbc s\u00f3ng ho\u1eb7c t\u1ea7n s\u1ed1 duy nh\u1ea5t \u0111\u01b0\u1ee3c ph\u00e1t r\u1ed9ng r\u00e3i (broadcast) t\u1edbi t\u1ea5t c\u1ea3 c\u00e1c tr\u1ea1m l\u00e1; l\u01b0u l\u01b0\u1ee3ng truy\u1ec1n l\u00ean th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00f9ng k\u00eanh ho\u1eb7c k\u00eanh chung nh\u01b0ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd th\u00f4ng qua l\u1eadp l\u1ecbch.<\/strong>Trong m\u1ea1ng quang P2MP, m\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng (PON) l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh: m\u1ed9t s\u1ee3i c\u00e1p t\u1eeb. <br\/>thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1eddng d\u00e2y quang (OLT) <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-olt-and-its-importance-in-fiber-optic-networks\/\">OLT<\/a> \u0111\u01b0\u1ee3c chia th\u1ee5 \u0111\u1ed9ng (t\u1ef7 l\u1ec7 1:N) t\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i quang (ONU) t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Th\u1ef1c hi\u1ec7n quang h\u1ecdc \u2013 P2MP \u0111\u1ed3ng pha, m\u1ea1ng PON, th\u1ebf h\u1ec7 ti\u1ebfp theo<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y l\u00e0m n\u1ed5i b\u1eadt r\u1eb1ng <strong>quang h\u1ecdc k\u1ebft h\u1ee3p<br><\/strong> \u0111ang \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho ki\u1ebfn tr\u00fac P2MP\u2014t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed, s\u1eed d\u1ee5ng ph\u1ed5 v\u00e0 \u0111\u1ed9 tr\u1ec5. <br\/>V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u cho th\u1ea5y quang h\u1ecdc P2MP c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed b\u1ed9 thu ph\u00e1t, m\u1ee9c ti\u00eau th\u1ee5 ph\u1ed5 v\u00e0 s\u1ed1 l\u01b0\u1ee3ng b\u01b0\u1edbc nh\u1ea3y IP so v\u1edbi P2P trong c\u00e1c m\u1ea1ng v\u00f2ng \u0111\u00f4 th\u1ecb. <br\/>M\u1ed9t nghi\u00ean c\u1ee9u kh\u00e1c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c b\u1ed9 thu ph\u00e1t quang linh ho\u1ea1t cho PON P2MP h\u01b0\u1edbng l\u00ean, gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c nh\u01b0 t\u1ef7 l\u1ec7 c\u00f4ng su\u1ea5t \u0111\u1ec9nh tr\u00ean trung b\u00ecnh cao. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh v\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng<\/strong> \u0111\u1ed1i v\u1edbi m\u1ea1ng quang P2MP bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ef7 l\u1ec7 chia (v\u00ed d\u1ee5: 1:32, 1:64) trong c\u00e1c b\u1ed9 chia th\u1ee5 \u0111\u1ed9ng<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n (c\u00f4ng su\u1ea5t quang, t\u1ed5n hao t\u1eeb b\u1ed9 chia, suy hao s\u1ee3i quang)<\/p><\/li><li><p>K\u1ebf ho\u1ea1ch b\u01b0\u1edbc s\u00f3ng (b\u01b0\u1edbc s\u00f3ng chung h\u01b0\u1edbng xu\u1ed1ng, k\u00eanh(s) h\u01b0\u1edbng l\u00ean)<\/p><\/li><li><p>Ki\u1ebfn tr\u00fac ph\u00e2n nh\u00e1nh v\u00e0 ph\u1ea1m vi kho\u1ea3ng c\u00e1ch<\/p><\/li><li><p>\u0110i\u1ec1u khi\u1ec3n truy c\u1eadp h\u01b0\u1edbng l\u00ean (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/time-division-multiple-access-in-wireless-communication-explained\/\">TDMA<\/a>, WDM, v.v.)<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">B\u1ed9 thu ph\u00e1t quang<\/a> t\u01b0\u01a1ng th\u00edch (b\u01b0\u1edbc s\u00f3ng, ph\u1ea1m vi, d\u1ea1ng d\u00e1ng)<br\/>V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 PON IMDD h\u01b0\u1edbng l\u00ean 20 km cho th\u1ea5y c\u00e1ch c\u00e1c b\u1ed9 thu ph\u00e1t P2MP linh ho\u1ea1t ti\u00ean ti\u1ebfn ho\u1ea1t \u0111\u1ed9ng tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF). <\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 \u1ee8ng d\u1ee5ng c\u1ee7a m\u1ea1ng P2MP<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >Truy c\u1eadp vi\u1ec5n th\u00f4ng \/ FTTx<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-ftth-fiber-to-the-home\/\">Tri\u1ec3n khai Fibre\u2011to\u2011the\u2011Home (FTTH)<\/a> , m\u1ed9t OLT g\u1eedi t\u00edn hi\u1ec7u t\u1edbi nhi\u1ec1u ONU c\u1ee7a thu\u00ea bao trong c\u1ea5u tr\u00fac c\u00e2y: \u0111\u00e2y l\u00e0 P2MP c\u1ed5 \u0111i\u1ec3n. Hi\u1ec7u qu\u1ea3 chi ph\u00ed khi m\u1ed9t s\u1ee3i quang ph\u1ee5c v\u1ee5 nhi\u1ec1u \u0111i\u1ec3m cu\u1ed1i l\u00e0 y\u1ebfu t\u1ed1 th\u00fac \u0111\u1ea9y ch\u00ednh. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ea1ng \u0111\u00f4 th\u1ecb v\u00e0 m\u1ea1ng v\u00f2ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ea1ng quang \u0111\u00f4 th\u1ecb d\u1ea1ng v\u00f2ng ho\u1eb7c d\u1ea1ng trung t\u00e2m\u2013nh\u00e1nh, P2MP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u1ee5c v\u1ee5 nhi\u1ec1u n\u00fat \u0111\u00f4 th\u1ecb t\u1eeb m\u1ed9t trung t\u00e2m b\u1eb1ng c\u00e1c \u201cc\u00e2y \u00e1nh s\u00e1ng\u201d ph\u00e2n nh\u00e1nh, gi\u00fap gi\u1ea3m chi ph\u00ed so v\u1edbi vi\u1ec7c tri\u1ec3n khai nhi\u1ec1u li\u00ean k\u1ebft P2P ri\u00eang l\u1ebb. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ea1ng kh\u00f4ng d\u00e2y v\u00e0 truy c\u1eadp kh\u00f4ng d\u00e2y c\u1ed1 \u0111\u1ecbnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 trong m\u1ea1ng kh\u00f4ng d\u00e2y, t\u00f4p\u00f4 P2MP v\u1eabn xu\u1ea5t hi\u1ec7n: m\u1ed9t tr\u1ea1m g\u1ed1c ph\u1ee5c v\u1ee5 nhi\u1ec1u \u0111\u01a1n v\u1ecb thu\u00ea bao, thay v\u00ec thi\u1ebft l\u1eadp c\u00e1c li\u00ean k\u1ebft chuy\u00ean d\u1ee5ng cho t\u1eebng \u0111\u01a1n v\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1eadp trung d\u1eef li\u1ec7u trung t\u00e2m \/ doanh nghi\u1ec7p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a> ho\u1eb7c m\u1ea1ng khu\u00f4n vi\u00ean, P2MP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng khi m\u1ed9t b\u1ed9 chuy\u1ec3n m\u1ea1ch trung t\u00e2m ho\u1eb7c n\u00fat ph\u00e2n ph\u1ed1i k\u1ebft n\u1ed1i v\u1edbi nhi\u1ec1u n\u00fat bi\u00ean, \u0111\u1eb7c bi\u1ec7t khi k\u1ebft h\u1ee3p v\u1edbi b\u1ed9 chia quang ho\u1eb7c b\u1ed9 gh\u00e9p k\u00eanh nh\u1eb1m ti\u1ebft ki\u1ec7m chi ph\u00ed s\u1ee3i quang ho\u1eb7c thi\u1ebft b\u1ecb quang.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 \u01afu \u0111i\u1ec3m v\u00e0 th\u00e1ch th\u1ee9c c\u1ee7a P2MP<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u01afu \u0111i\u1ec3m<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/strong>: Ph\u1ee5c v\u1ee5 nhi\u1ec1u \u0111i\u1ec3m cu\u1ed1i t\u1eeb m\u1ed9t n\u00fat trung t\u00e2m duy nh\u1ea5t th\u00f4ng qua \u0111\u01b0\u1eddng trunk chung v\u00e0 ph\u00e2n nh\u00e1nh l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang v\u00e0 b\u1ed9 thu ph\u00e1t so v\u1edbi nhi\u1ec1u k\u1ebft n\u1ed1i r\u1eddi r\u1ea1c <span style=\"color: rgb(191, 61, 55);\">C\u00e1c li\u00ean k\u1ebft P2P<\/span>. V\u00ed d\u1ee5, c\u00e1c nghi\u00ean c\u1ee9u cho th\u1ea5y ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ed9 thu ph\u00e1t v\u00e0 ph\u1ed5 t\u1ea7n trong c\u00e1c gi\u1ea3i ph\u00e1p quang P2MP. <\/p><\/li><li><p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong>: N\u00fat g\u1ed1c c\u00f3 th\u1ec3 ph\u00e2n nh\u00e1nh th\u00e0nh nhi\u1ec1u n\u00fat l\u00e1; vi\u1ec7c th\u00eam n\u00fat l\u00e1 th\u01b0\u1eddng ch\u1ec9 y\u00eau c\u1ea7u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng b\u1ed5 sung t\u1ed1i thi\u1ec3u.<\/p><\/li><li><p><strong>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u01a1n gi\u1ea3n h\u00f3a<\/strong>: Ki\u1ebfn tr\u00fac th\u1ed1ng nh\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m di\u1ec7n t\u00edch thi\u1ebft b\u1ecb chi\u1ebfm d\u1ee5ng, \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec.<\/p><\/li><li><p><strong>T\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng<\/strong>: C\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n xu\u1ed1ng chung c\u00f3 th\u1ec3 gi\u1ea3m dung l\u01b0\u1ee3ng kh\u00f4ng s\u1eed d\u1ee5ng so v\u1edbi c\u00e1c li\u00ean k\u1ebft P2P chuy\u00ean d\u1ee5ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Th\u00e1ch th\u1ee9c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u1ea1n ch\u1ebf c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n chia s\u1ebb<\/strong>: V\u00ec \u0111\u01b0\u1eddng truy\u1ec1n xu\u1ed1ng l\u00e0 chung cho nhi\u1ec1u n\u00fat l\u00e1, hi\u1ec7u n\u0103ng li\u00ean k\u1ebft ri\u00eang l\u1ebb c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi t\u1ed5n hao ph\u00e2n nh\u00e1nh ho\u1eb7c xung \u0111\u1ed9t n\u1ebfu \u0111\u01b0\u1eddng truy\u1ec1n l\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd t\u1ed1t.<\/p><\/li><li><p><strong>L\u1eadp l\u1ecbch truy\u1ec1n l\u00ean \/ \u0111i\u1ec1u khi\u1ec3n ph\u00e2n nh\u00e1nh<\/strong>: C\u00e1c n\u00fat l\u00e1 th\u01b0\u1eddng kh\u00f4ng th\u1ec3 giao ti\u1ebfp tr\u1ef1c ti\u1ebfp v\u1edbi nhau; l\u01b0u l\u01b0\u1ee3ng truy\u1ec1n l\u00ean ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t (v\u00ed d\u1ee5: TDMA, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\">WDM<\/a>) \u0111\u1ec3 tr\u00e1nh va ch\u1ea1m. <\/p><\/li><li><p><strong>\u0110\u00e1nh \u0111\u1ed5i gi\u1eefa t\u1ed5n hao ph\u00e2n nh\u00e1nh v\u00e0 ph\u1ea1m vi ph\u1ee7 s\u00f3ng<\/strong>: Ph\u1ea1m vi ph\u1ee7 s\u00f3ng d\u00e0i h\u01a1n v\u00e0 s\u1ed1 l\u01b0\u1ee3ng ph\u00e2n nh\u00e1nh cao h\u01a1n l\u00e0m gi\u1ea3m bi\u00ean d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t quang; suy hao s\u1ee3i quang, t\u1ed5n hao b\u1ed9 chia v\u00e0 thi\u1ebft k\u1ebf ph\u00e2n nh\u00e1nh c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n k\u1ef9 l\u01b0\u1ee1ng.<\/p><\/li><li><p><strong>T\u00ednh linh ho\u1ea1t v\u00e0 n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai<\/strong>: M\u1ed9t s\u1ed1 ki\u1ebfn tr\u00fac P2MP l\u1ed7i th\u1eddi c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n h\u01a1n khi n\u00e2ng c\u1ea5p (l\u00ean t\u1ed1c \u0111\u1ed9 cao h\u01a1n ho\u1eb7c quang h\u1ecdc \u0111\u1ed3ng pha) so v\u1edbi c\u00e1c li\u00ean k\u1ebft P2P \u0111\u01a1n gi\u1ea3n. Tuy nhi\u00ean, c\u00e1c nghi\u00ean c\u1ee9u m\u1edbi v\u1ec1 quang h\u1ecdc \u0111\u1ed3ng pha P2MP \u0111ang gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y. <\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 Vai tr\u00f2 c\u1ee7a c\u00e1c module quang trong tri\u1ec3n khai P2MP<\/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\/12faf3c3e0cf424e8d3b25324f980ee7.webp\" alt=\"Optical Modules in P2MP Deployments\" class=\"wp-image-4386\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/12faf3c3e0cf424e8d3b25324f980ee7.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/12faf3c3e0cf424e8d3b25324f980ee7-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/12faf3c3e0cf424e8d3b25324f980ee7-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/12faf3c3e0cf424e8d3b25324f980ee7-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/12faf3c3e0cf424e8d3b25324f980ee7-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25cf V\u00ec sao b\u1ed9 thu ph\u00e1t quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ecdi m\u1ea1ng quang, b\u1ed9 thu ph\u00e1t l\u00e0 c\u1ea7u n\u1ed1i gi\u1eefa t\u00edn hi\u1ec7u \u0111i\u1ec7n trong thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 t\u00edn hi\u1ec7u quang tr\u00ean s\u1ee3i quang. \u0110\u1ed1i v\u1edbi m\u1ea1ng P2MP, vi\u1ec7c l\u1ef1a ch\u1ecdn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang ph\u00f9 h\u1ee3p<\/strong><\/a> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t nh\u1eb1m \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ph\u1ea1m vi ph\u1ee7 s\u00f3ng, b\u01b0\u1edbc s\u00f3ng, b\u0103ng th\u00f4ng, gh\u00e9p k\u00eanh v\u00e0 ph\u00e2n nh\u00e1nh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25cf C\u00e1c module quang c\u1ee7a LINK\u2011PP d\u00e0nh cho m\u1ea1ng th\u00e2n thi\u1ec7n v\u1edbi P2MP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">LINK\u2011PP<\/a> cung c\u1ea5p danh m\u1ee5c r\u1ed9ng l\u1edbn c\u00e1c b\u1ed9 thu ph\u00e1t quang v\u00e0 module SFP h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1eeb 1G \u0111\u1ebfn 400G (v\u00e0 cao h\u01a1n n\u1eefa) cho c\u1ea3 m\u00f4i tr\u01b0\u1eddng s\u1ee3i \u0111\u01a1n mode v\u00e0 \u0111a mode. <br\/>M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee5 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\"><strong>Module SFP 1\u202fG<\/strong><\/a>: ph\u1ea1m vi ph\u1ee7 s\u00f3ng l\u00ean \u0111\u1ebfn 120\u202fkm tr\u00ean s\u1ee3i \u0111\u01a1n mode (SMF), t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u n\u1ec1n t\u1ea3ng c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p. <\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26152-10-25-40g-100g-transceiver-modules.htm\"><strong>Module 10\/25\/40\/100\u202fG<\/strong><\/a>: v\u00ed d\u1ee5: h\u1ed7 tr\u1ee3 c\u00e1c bi\u1ebfn th\u1ec3 LR, SR, CWDM\/DWDM \u2013 bao ph\u1ee7 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng truy c\u1eadp, t\u1ed5ng h\u1ee3p v\u00e0 x\u01b0\u01a1ng s\u1ed1ng. <\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>M\u00f4-\u0111un 100\u202fG QSFP28 v\u00e0 SFP\u2011DD<\/strong><\/a> \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho m\u1eadt \u0111\u1ed9, chi ph\u00ed v\u00e0 tri\u1ec3n khai hi\u1ec7u su\u1ea5t cao. <br\/>\u0110\u1ed1i v\u1edbi tri\u1ec3n khai P2MP, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn m\u00f4-\u0111un SFP\/SFP+ \u0111\u01a1n ch\u1ebf \u0111\u1ed9 t\u1ea7m xa t\u1eeb OLT \u0111\u1ebfn b\u1ed9 chia (splitter), sau \u0111\u00f3 ch\u1ecdn c\u00e1c m\u00f4-\u0111un ph\u00f9 h\u1ee3p t\u1ea1i ONUs\/nh\u00e1nh (leaves) cho kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n. C\u00e1c m\u00f4-\u0111un LINK\u2011PP h\u1ed7 tr\u1ee3 DOM (gi\u00e1m s\u00e1t quang k\u1ef9 thu\u1eadt s\u1ed1), c\u1eafm n\u00f3ng (hot\u2011plug) v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p. <\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u25cf C\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u00f4-\u0111un quang trong P2MP<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00f9 h\u1ee3p t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u (v\u00ed d\u1ee5: 10G, 25G) y\u00eau c\u1ea7u b\u1edfi n\u00fat g\u1ed1c (root) v\u00e0 c\u00e1c nh\u00e1nh (leaves).<\/p><\/li><li><p>Ch\u1ecdn kho\u1ea3ng c\u00e1ch ph\u00f9 h\u1ee3p: v\u00ed d\u1ee5, n\u1ebfu t\u1ed5ng kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng trunk c\u1ed9ng v\u1edbi nh\u00e1nh l\u00e0 20\u2009km, h\u00e3y s\u1eed d\u1ee5ng m\u00f4-\u0111un \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng cho kho\u1ea3ng c\u00e1ch \u0111\u00f3 k\u00e8m d\u1ef1 ph\u00f2ng.<\/p><\/li><li><p>C\u00e2n nh\u1eafc k\u1ebf ho\u1ea1ch b\u01b0\u1edbc s\u00f3ng: \u0111\u01b0\u1eddng xu\u1ed1ng (downstream) c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t b\u01b0\u1edbc s\u00f3ng duy nh\u1ea5t, trong khi c\u00e1c nh\u00e1nh (leaves) c\u00f3 th\u1ec3 chia s\u1ebb k\u00eanh l\u00ean (upstream) ho\u1eb7c c\u00f3 c\u00e1c k\u00eanh ri\u00eang bi\u1ec7t; \u0111\u1ea3m b\u1ea3o b\u1ed9 thu ph\u00e1t (transceiver) h\u1ed7 tr\u1ee3 c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u1ea7n thi\u1ebft.<\/p><\/li><li><p>T\u00ednh \u0111\u1ebfn t\u1ed5n hao do b\u1ed9 chia (splitter) v\u00e0 ng\u00e2n s\u00e1ch quang h\u1ecdc: \u0111\u1ed1i v\u1edbi t\u1ef7 l\u1ec7 chia th\u1ee5 \u0111\u1ed9ng 1:32 ho\u1eb7c 1:64, h\u00e3y t\u00ednh th\u00eam t\u1ed5n hao chia kho\u1ea3ng ~13\u201118\u2009dB c\u1ed9ng v\u1edbi suy hao s\u1ee3i quang.<\/p><\/li><li><p>\u01afu ti\u00ean c\u00e1c m\u00f4-\u0111un h\u1ed7 tr\u1ee3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">ch\u1ea9n \u0111o\u00e1n (DOM)<\/a> \u0111\u1ec3 gi\u00e1m s\u00e1t ch\u1ee7 \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady m\u1ea1ng.<\/p><\/li><li><p>H\u01b0\u1edbng t\u1edbi t\u01b0\u01a1ng lai: Ch\u1ecdn c\u00e1c m\u00f4-\u0111un v\u00e0 d\u1ea1ng th\u00e2n (form\u2011factors)<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">SFP28<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\">QSFP28<br><\/a>cho ph\u00e9p n\u00e2ng c\u1ea5p l\u00ean t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n ho\u1eb7c ki\u1ebfn tr\u00fac n\u00e2ng cao (v\u00ed d\u1ee5: P2MP \u0111\u1ed3ng pha \u2013 coherent P2MP).<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 C\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf &amp; h\u01b0\u1edbng d\u1eabn tri\u1ec3n khai<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f4-p\u00f4: C\u00e2y (Tree) so v\u1edbi V\u00f2ng (Ring) so v\u1edbi Trung t\u00e2m\u2013Nh\u00e1nh (Hub\u2011Spoke)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1eadp k\u1ebf ho\u1ea1ch P2MP, vi\u1ec7c ph\u00e2n nh\u00e1nh v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00e0 logic r\u1ea5t quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi m\u1ea1ng truy c\u1eadp, t\u00f4-p\u00f4 c\u00e2y v\u1edbi s\u1ee3i trunk t\u1eeb n\u00fat trung t\u00e2m v\u00e0 c\u00e1c b\u1ed9 chia th\u1ee5 \u0111\u1ed9ng l\u00e0 ph\u1ed5 bi\u1ebfn. Trong m\u1ea1ng \u0111\u00f4 th\u1ecb (metro), c\u00e1c \u201cc\u00e2y quang\u201d (light\u2011trees) c\u00f3 th\u1ec3 ph\u00e2n nh\u00e1nh t\u1edbi c\u00e1c n\u00fat v\u00f2ng ho\u1eb7c n\u00fat trung t\u00e2m. Nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng c\u00e1c m\u1ea1ng ph\u00e2n nh\u00e1nh d\u1ea1ng c\u00e2y\/\u00e1nh nh\u00e1nh s\u1eed d\u1ee5ng <strong>quang h\u1ecdc P2MP<\/strong> mang l\u1ea1i ti\u1ebft ki\u1ec7m chi ph\u00ed. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ef7 l\u1ec7 chia, ng\u00e2n s\u00e1ch quang h\u1ecdc &amp; kho\u1ea3ng c\u00e1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh to\u00e1n ng\u00e2n s\u00e1ch quang h\u1ecdc: c\u00f4ng su\u1ea5t b\u1ed9 ph\u00e1t tr\u1eeb \u0111i t\u1ed5n hao do b\u1ed9 chia v\u00e0 s\u1ee3i quang ph\u1ea3i l\u1edbn h\u01a1n \u0111\u1ed9 nh\u1ea1y b\u1ed9 thu v\u1edbi m\u1ed9t m\u1ee9c d\u1ef1 ph\u00f2ng. V\u00ed d\u1ee5, t\u1ef7 l\u1ec7 chia 1:32 c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n hao kho\u1ea3ng ~15\u202fdB do b\u1ed9 chia, c\u1ed9ng v\u1edbi suy hao s\u1ee3i quang \u0111i\u1ec3n h\u00ecnh l\u00e0 0.35\u202fdB\/km (s\u1ee3i \u0111\u01a1n mode \u2013 SMF) v\u00e0 t\u1ed5n hao do \u0111\u1ea7u n\u1ed1i\/b\u1eaft n\u1ed1i.<br\/>\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un LINK\u2011PP \u0111\u01b0\u1ee3c ch\u1ecdn \u1edf n\u00fat g\u1ed1c h\u1ed7 tr\u1ee3 c\u00f4ng su\u1ea5t quang y\u00eau c\u1ea7u v\u00e0 v\u1eabn duy tr\u00ec \u0111\u1ed9 nh\u1ea1y h\u1ed7 tr\u1ee3 c\u0169ng nh\u01b0 ch\u1ea9n \u0111o\u00e1n DOM.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u01a1 ch\u1ebf truy c\u1eadp h\u01b0\u1edbng l\u00ean<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ki\u1ebfn tr\u00fac P2MP, l\u01b0u l\u01b0\u1ee3ng h\u01b0\u1edbng l\u00ean t\u1eeb nhi\u1ec1u n\u00fat l\u00e1 ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd. C\u00e1c c\u01a1 ch\u1ebf ph\u1ed5 bi\u1ebfn g\u1ed3m: TDMA, WDM ho\u1eb7c c\u00e1c ch\u00f9m xung h\u01b0\u1edbng l\u00ean ph\u00e2n chia theo th\u1eddi gian (trong c\u00e1c m\u1ea1ng PON). Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00f4-\u0111un quang v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-olt-and-its-importance-in-fiber-optic-networks\/\">OLT<\/a>thi\u1ebft k\u1ebf \/ONU ph\u1ea3i h\u1ed7 tr\u1ee3 \u0111i\u1ec1u n\u00e0y. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u01b0\u01a1ng quan gi\u1eefa truy\u1ec1n d\u1eabn \u0111\u1ed3ng pha (coherent) v\u00e0 truy\u1ec1n d\u1eabn tr\u1ef1c ti\u1ebfp (IMDD), t\u00ednh s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ki\u1ebfn tr\u00fac P2MP m\u1edbi n\u1ed5i s\u1eed d\u1ee5ng <strong>quang h\u1ecdc k\u1ebft h\u1ee3p<br><\/strong> \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 cao h\u01a1n v\u00e0 ph\u1ea1m vi xa h\u01a1n v\u1edbi kh\u1ea3 n\u0103ng ph\u00e2n nh\u00e1nh. V\u00ed d\u1ee5, P2MP \u0111\u1ed3ng pha gi\u00fap gi\u1ea3m chi ph\u00ed b\u1ed9 thu ph\u00e1t v\u00e0 ph\u1ed5 t\u1ea7n so v\u1edbi c\u1ea5u h\u00ecnh P2P t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. <br\/>C\u00e1c nh\u00e0 khai th\u00e1c v\u00e0 k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf m\u1ea1ng c\u1ea7n \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 s\u1eb5n s\u00e0ng c\u1ee7a m\u00f4-\u0111un quang: d\u1ea1ng h\u00ecnh (form\u2011factor), \u0111\u1ecbnh d\u1ea1ng \u0111i\u1ec1u ch\u1ebf, h\u1ed7 tr\u1ee3 gi\u00e1m s\u00e1t v\u00e0 l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ed9 tin c\u1eady, gi\u00e1m s\u00e1t &amp; b\u1ea3o tr\u00ec<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec m\u1ed9t n\u00fat g\u1ed1c c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 nhi\u1ec1u n\u00fat l\u00e1, n\u00ean s\u1ef1 c\u1ed1 ho\u1eb7c hi\u1ec7u n\u0103ng k\u00e9m c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec1u \u0111i\u1ec3m cu\u1ed1i. C\u00e1c t\u00ednh n\u0103ng nh\u01b0 <strong>DOM, kh\u1ea3 n\u0103ng thay th\u1ebf n\u00f3ng (hot\u2011plug), kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng b\u1ec1n v\u1eefng (bao g\u1ed3m d\u1ef1 ph\u00f2ng) <\/strong>l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>c\u00e1c m\u00f4-\u0111un LINK\u2011PP<\/strong><\/a> c\u00f3 DDM\/DOM v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng gi\u00fap \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau n\u00e0y. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 T\u00f3m t\u1eaft &amp; K\u1ebft lu\u1eadn ch\u00ednh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00f3m l\u1ea1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>P2MP l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac m\u1ea1ng m\u1ea1nh m\u1ebd h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i m\u1ed9t\u2013\u0111\u1ebfn\u2013nhi\u1ec1u, r\u1ea5t ph\u00f9 h\u1ee3p cho m\u1ea1ng truy nh\u1eadp, m\u1ea1ng \u0111\u00f4 th\u1ecb (metro) v\u00e0 m\u1ea1ng t\u1eadp h\u1ee3p (aggregation).<\/p><\/li><li><p><strong>C\u00e1c m\u1ea1ng P2MP quang<\/strong> mang l\u1ea1i l\u1ee3i \u00edch v\u1ec1 chi ph\u00ed, s\u1eed d\u1ee5ng c\u00e1p s\u1ee3i quang v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng khi \u0111\u01b0\u1ee3c ki\u1ebfn tr\u00fac \u0111\u00fang c\u00e1ch.<\/p><\/li><li><p><strong>C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc ch\u00ednh<\/strong> bao g\u1ed3m ng\u00e2n s\u00e1ch quang, thi\u1ebft k\u1ebf ph\u00e2n nh\u00e1nh\/t\u00e1ch nh\u00e1nh, ki\u1ec3m so\u00e1t truy c\u1eadp h\u01b0\u1edbng l\u00ean, ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch b\u1ed9 thu ph\u00e1t v\u00e0 l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai (v\u00ed d\u1ee5: quang h\u1ecdc \u0111\u1ed3ng pha).<\/p><\/li><li><p><strong>M\u00f4-\u0111un quang<\/strong> l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u n\u00e0y; vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c m\u00f4-\u0111un tu\u00e2n th\u1ee7 chu\u1ea9n, kh\u00f4ng ph\u1ee5 thu\u1ed9c nh\u00e0 cung c\u1ea5p v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu.<\/p><\/li><li><p>LINK\u2011PP cung c\u1ea5p to\u00e0n b\u1ed9 d\u1ea3i ph\u1ed5 c\u00e1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/optical transceiver modules\">b\u1ed9 thu ph\u00e1t quang t\u1ed1c \u0111\u1ed9 cao<\/a> m\u00f4-\u0111un d\u1ea1ng SFP\/ QSFP \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho m\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i, vi\u1ec5n th\u00f4ng v\u00e0 truy nh\u1eadp quang \u2014 khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn m\u1ea1nh m\u1ebd cho tri\u1ec3n khai m\u1ea1ng P2MP.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 m\u1ea1ng, nh\u00e0 t\u00edch h\u1ee3p v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf trung t\u00e2m d\u1eef li\u1ec7u \u0111ang xem x\u00e9t ki\u1ebfn tr\u00fac P2MP, vi\u1ec7c \u0111\u1ed3ng b\u1ed9 h\u00f3a thi\u1ebft k\u1ebf b\u1ed1 tr\u00ed m\u1ea1ng c\u1ee7a b\u1ea1n v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00f4-\u0111un quang ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c m\u00f4-\u0111un h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch truy\u1ec1n, t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u v\u00e0 y\u00eau c\u1ea7u ph\u00e2n nh\u00e1nh c\u1ee7a b\u1ea1n, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 gi\u00e1m s\u00e1t, s\u1ebd mang l\u1ea1i th\u00e0nh c\u00f4ng l\u00e2u d\u00e0i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u1edbi thi\u1ec7u v\u1ec1 LINK\u2011PP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LINK\u2011PP l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 t\u1eeb t\u00ednh, v\u00e0 trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y \u0111\u00e3 m\u1edf r\u1ed9ng m\u1ea1nh m\u1ebd v\u00e0o <strong>c\u00e1c m\u00f4-\u0111un b\u1ed9 thu ph\u00e1t quang v\u00e0 gi\u1ea3i ph\u00e1p SFP<\/strong>. Danh m\u1ee5c m\u00f4-\u0111un quang c\u1ee7a h\u1ecd bao ph\u1ee7 d\u1ea3i t\u1ed1c \u0111\u1ed9 t\u1eeb 1G \u0111\u1ebfn 400G (v\u00e0 cao h\u01a1n n\u1eefa), h\u1ed7 tr\u1ee3 c\u1ea3 s\u1ee3i quang \u0111\u01a1n mode v\u00e0 \u0111a mode, v\u1edbi c\u00e1c d\u1ea1ng h\u00ecnh th\u1ee9c t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u nh\u00e0 cung c\u1ea5p v\u00e0 t\u00ednh n\u0103ng gi\u00e1m s\u00e1t\u2014t\u1eeb \u0111\u00f3 tr\u1edf th\u00e0nh <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\"><strong>LINK\u2011PP<\/strong><\/a> \u0111\u1ed1i t\u00e1c l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng d\u1ef1a tr\u00ean P2MP.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 ki\u1ebfn tr\u00fac m\u1ea1ng \u0111i\u1ec3m\u2013\u0111a \u0111i\u1ec3m (point-to-multipoint \u2013 P2MP), nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, \u01b0u \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng. T\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c b\u1ed9 thu ph\u00e1t quang LINK-PP h\u1ed7 tr\u1ee3 tri\u1ec3n khai P2MP.<\/p>","protected":false},"author":1,"featured_media":4387,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[13,14,16,17,18,26],"class_list":["post-4388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-100g-modules","tag-10g-sfp-transceivers","tag-link-pp-25g-sfp28-optical-modules","tag-400g-optical-modules","tag-40g-qsfp-transceivers","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4388","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=4388"}],"version-history":[{"count":6,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4388\/revisions"}],"predecessor-version":[{"id":10904,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4388\/revisions\/10904"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4387"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}