{"id":4409,"date":"2025-11-10T11:12:00","date_gmt":"2025-11-10T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/simple-network-management-protocol-snmp-network-monitoring\/"},"modified":"2026-06-22T05:18:25","modified_gmt":"2026-06-22T05:18:25","slug":"simple-network-management-protocol-snmp-network-monitoring","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/simple-network-management-protocol-snmp-network-monitoring","title":{"rendered":"L\u00e0m r\u00f5 Giao th\u1ee9c Qu\u1ea3n l\u00fd M\u1ea1ng \u0110\u01a1n gi\u1ea3n (SNMP)"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"813\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f.webp\" alt=\"Simple Network Management Protocol (SNMP)\" class=\"wp-image-4407\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f-300x203.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f-1024x694.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f-768x520.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3b6f447f62d74a518c1929707cf87a2f-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi CNTT r\u1ed9ng l\u1edbn v\u00e0 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd, kh\u1ea3 n\u0103ng quan s\u00e1t m\u1ea1ng ch\u00ednh l\u00e0 quy\u1ec1n l\u1ef1c. L\u00e0m th\u1ebf n\u00e0o b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c m\u1ed9t m\u00e1y ch\u1ee7 quan tr\u1ecdng s\u1eafp g\u1eb7p s\u1ef1 c\u1ed1, m\u1ed9t li\u00ean k\u1ebft m\u1ea1ng \u0111ang b\u1ecb t\u1eafc ngh\u1ebdn hay m\u1ed9t cu\u1ed9c x\u00e2m nh\u1eadp b\u1ea3o m\u1eadt \u0111ang di\u1ec5n ra? C\u00e2u tr\u1ea3 l\u1eddi th\u01b0\u1eddng n\u1eb1m \u1edf m\u1ed9t giao th\u1ee9c \u0111\u00e3 l\u00e0m n\u1ec1n t\u1ea3ng cho qu\u1ea3n l\u00fd m\u1ea1ng trong h\u00e0ng th\u1eadp k\u1ef7: <span class=\"highlight\">SNMP<\/span>. <strong>Simple Network Management Protocol (SNMP)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 t\u1eeb \u201c\u0111\u01a1n gi\u1ea3n\u201d c\u00f3 m\u1eb7t trong t\u00ean g\u1ecdi c\u1ee7a n\u00f3, vai tr\u00f2 c\u1ee7a giao th\u1ee9c n\u00e0y l\u1ea1i c\u1ef1c k\u1ef3 quan tr\u1ecdng. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u1ea3i th\u00edch r\u00f5 SNMP l\u00e0 g\u00ec, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 v\u00e0 l\u00fd do v\u00ec sao n\u00f3 v\u1eabn l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. Ch\u00fang ta c\u0169ng s\u1ebd kh\u00e1m ph\u00e1 m\u1ed9t \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n: gi\u00e1m s\u00e1t ph\u1ea7n c\u1ee9ng then ch\u1ed1t nh\u01b0 <span class=\"highlight\">m\u00e1y ch\u1ee7, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch<\/span>. <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>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>SNMP<\/strong> <span class=\"highlight\">SNMP<\/span> gi\u00fap vi\u1ec7c qu\u1ea3n l\u00fd m\u1ea1ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. N\u00f3 h\u1ed7 tr\u1ee3 b\u1ea1n theo d\u00f5i v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p><\/li>\n\n\n\n<li><p>Phi\u00ean b\u1ea3n SNMP 3 cung c\u1ea5p b\u1ea3o m\u1eadt t\u1ed1t h\u01a1n. N\u00f3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a th\u00f4ng tin.<\/p><\/li>\n\n\n\n<li><p>H\u1ec7 th\u1ed1ng SNMP bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n <span class=\"highlight\">agent<\/span> v\u00e0 <span class=\"highlight\">manager<\/span>. Ch\u00fang ph\u1ed1i h\u1ee3p nh\u01b0 m\u1ed9t \u0111\u1ed9i ng\u0169 \u0111\u1ec3 thu th\u1eadp v\u00e0 chia s\u1ebb th\u00f4ng tin chi ti\u1ebft v\u1ec1 thi\u1ebft b\u1ecb.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 SNMP l\u00e0 g\u00ec? T\u1ed5ng quan \u1edf m\u1ee9c cao<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, <strong>SNMP<\/strong> <span class=\"highlight\">SNMP<\/span> l\u00e0 m\u1ed9t giao th\u1ee9c l\u1edbp \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m qu\u1ea3n l\u00fd v\u00e0 gi\u00e1m s\u00e1t c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i m\u1ea1ng. N\u00f3 cho ph\u00e9p c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng thu th\u1eadp th\u00f4ng tin, \u0111i\u1ec1u ch\u1ec9nh h\u00e0nh vi thi\u1ebft b\u1ecb v\u00e0 nh\u1eadn c\u1ea3nh b\u00e1o th\u1eddi gian th\u1ef1c \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u t\u1eeb m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u1eadp trung.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y h\u00ecnh dung n\u00f3 nh\u01b0 m\u1ed9t ng\u00f4n ng\u1eef ph\u1ed5 qu\u00e1t m\u00e0 ph\u1ea7n m\u1ec1m qu\u1ea3n l\u00fd m\u1ea1ng c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng \u0111\u1ec3 \u201cgiao ti\u1ebfp\u201d v\u1edbi c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, b\u1ed9 chuy\u1ec3n m\u1ea1ch, m\u00e1y ch\u1ee7 v\u00e0 t\u01b0\u1eddng l\u1eeda \u2014 b\u1ea5t k\u1ec3 nh\u00e0 s\u1ea3n xu\u1ea5t n\u00e0o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i trong h\u1ec7 sinh th\u00e1i SNMP<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u1ea1ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi SNMP bao g\u1ed3m ba y\u1ebfu t\u1ed1 ch\u00ednh:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong><span class=\"highlight\">SNMP Manager<\/span>:<\/strong> \u201cNg\u01b0\u1eddi \u0111\u1ee9ng \u0111\u1ea7u\u201d c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u00e2y l\u00e0 ph\u1ea7n m\u1ec1m trung t\u00e2m (v\u00ed d\u1ee5: SolarWinds, PRTG, LibreNMS) ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7, c\u00f3 nhi\u1ec7m v\u1ee5 truy v\u1ea5n c\u00e1c agent v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong><span class=\"highlight\">SNMP Agent<\/span>:<\/strong> M\u1ed9t m\u00f4-\u0111un ph\u1ea7n m\u1ec1m n\u1eb1m tr\u00ean thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd (b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, b\u1ed9 chuy\u1ec3n m\u1ea1ch, v.v.). N\u00f3 ch\u1ecbu tr\u00e1ch nhi\u1ec7m l\u01b0u tr\u1eef th\u00f4ng tin qu\u1ea3n l\u00fd c\u1ee5c b\u1ed9 v\u00e0 g\u1eedi th\u00f4ng tin \u0111\u00f3 t\u1edbi manager khi \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd &amp; MIB:<\/strong> C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng t\u1ef1 th\u00e2n ch\u1ee9a <span class=\"highlight\">agent<\/span> v\u00e0 <span class=\"highlight\">Management Information Base (MIB)<\/span>. <strong><span class=\"highlight\">Agent<\/span><\/strong>. The <strong><span class=\"highlight\">Management Information Base (MIB)<\/span><\/strong> l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u \u1ea3o \u0111\u1ecbnh ngh\u0129a th\u00f4ng tin m\u00e0 Agent c\u00f3 th\u1ec3 cung c\u1ea5p. \u0110\u00e2y l\u00e0 b\u1ea3n \u0111\u1ed3 ph\u00e2n c\u1ea5p c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u c\u00f3 s\u1eb5n \u0111\u1ec3 truy v\u1ea5n.<\/p><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"664\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce.webp\" alt=\"Simple Network Management Protocol\" class=\"wp-image-4408\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce-300x166.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce-1024x567.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce-768x425.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f9db20de391d4454bd085899a684b3ce-18x10.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 C\u00e1c phi\u00ean b\u1ea3n SNMP: T\u00ecm hi\u1ec3u v\u1ec1 B\u1ea3o m\u1eadt &amp; T\u00ednh n\u0103ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c phi\u00ean b\u1ea3n SNMP \u0111\u1ec1u nh\u01b0 nhau. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c phi\u00ean b\u1ea3n l\u00e0 r\u1ea5t quan tr\u1ecdng c\u1ea3 v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng l\u1eabn b\u1ea3o m\u1eadt. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh nhanh:<\/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;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Phi\u00ean b\u1ea3n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u00e1ch s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>SNMPv1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Phi\u00ean b\u1ea3n g\u1ed1c; \u0111\u01a1n gi\u1ea3n nh\u01b0ng c\u01a1 b\u1ea3n.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>R\u1ea5t th\u1ea5p (S\u1eed d\u1ee5ng chu\u1ed7i \u201ccommunity\u201d d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ec9 d\u00e0nh cho c\u00e1c h\u1ec7 th\u1ed1ng c\u0169; tr\u00e1nh s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>SNMPv2c<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng v\u1edbi c\u00e1c thao t\u00e1c giao th\u1ee9c m\u1edbi.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p (V\u1eabn s\u1eed d\u1ee5ng chu\u1ed7i \u201ccommunity\u201d d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng n\u1ed9i b\u1ed9 \u0111\u00e1ng tin c\u1eady.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>SNMPv3<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u00eam x\u00e1c th\u1ef1c m\u1ea1nh, m\u00e3 h\u00f3a v\u00e0 b\u1ea3o m\u1eadt ri\u00eang t\u01b0.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao (M\u00f4 h\u00ecnh b\u1ea3o m\u1eadt d\u1ef1a tr\u00ean ng\u01b0\u1eddi d\u00f9ng).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Essential<\/strong> cho b\u1ea5t k\u1ef3 m\u1ea1ng n\u00e0o \u0111i qua c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n kh\u00f4ng \u0111\u00e1ng tin c\u1eady ho\u1eb7c y\u00eau c\u1ea7u m\u1ee9c b\u1ea3o m\u1eadt cao.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t: \u0110\u1ed1i v\u1edbi vi\u1ec7c gi\u00e1m s\u00e1t hi\u1ec7u n\u0103ng m\u1ea1ng nghi\u00eam t\u00fac, \u0111\u1eb7c bi\u1ec7t khi qu\u1ea3n l\u00fd c\u00e1c thi\u1ebft b\u1ecb c\u00f3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> th\u00e0nh ph\u1ea7n, lu\u00f4n c\u1ed1 g\u1eafng tri\u1ec3n khai SNMPv3 \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u h\u1ea1 t\u1ea7ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 SNMP ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: \u0110i\u1ec7u nh\u1ea3y \u201cGet\u201d v\u00e0 \u201cTrap\u201d<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Giao th\u1ee9c ho\u1ea1t \u0111\u1ed9ng th\u00f4ng qua m\u00f4 h\u00ecnh y\u00eau c\u1ea7u\u2013ph\u1ea3n h\u1ed3i \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 v\u00e0 c\u01a1 ch\u1ebf c\u1ea3nh b\u00e1o:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Vi\u1ec7c th\u0103m d\u00f2 (Polling):<\/strong> The <strong>SNMP<\/strong> Manager \u0111\u1ecbnh k\u1ef3 \u201cth\u0103m d\u00f2\u201d ho\u1eb7c truy v\u1ea5n c\u00e1c Agent b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">GET<\/mark> \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u (v\u00ed d\u1ee5: t\u1ea3i CPU, tr\u1ea1ng th\u00e1i giao di\u1ec7n, nhi\u1ec7t \u0111\u1ed9).<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>C\u00e1c g\u00f3i tin c\u1ea3nh b\u00e1o (Traps):<\/strong> \u0110\u00e2y l\u00e0 ph\u1ea7n ch\u1ee7 \u0111\u1ed9ng. Agent c\u00f3 th\u1ec3 g\u1eedi m\u1ed9t th\u00f4ng \u0111i\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u01b0\u1edbc g\u1ecdi l\u00e0 <mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">TRAP<\/mark> or <mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">INFORM<\/mark> \u0111\u1ebfn Manager khi x\u1ea3y ra s\u1ef1 ki\u1ec7n quan tr\u1ecdng (v\u00ed d\u1ee5: li\u00ean k\u1ebft b\u1ecb ng\u1eaft, nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t ng\u01b0\u1ee1ng). \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c c\u1ea3nh b\u00e1o th\u1eddi gian th\u1ef1c.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 M\u1ed9t v\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf: Gi\u00e1m s\u00e1t b\u1ed9 thu ph\u00e1t quang b\u1eb1ng SNMP<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 n\u01a1i l\u00fd thuy\u1ebft g\u1eb7p th\u1ef1c ti\u1ec5n. <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>, nh\u01b0 <strong>c\u00e1c module SFP, SFP+ v\u00e0 QSFP28<\/strong> , l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n ch\u1ee7 l\u1ef1c c\u1ee7a c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i. Ch\u00fang chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n sang \u00e1nh s\u00e1ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, v\u00e0 t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe c\u1ee7a ch\u00fang r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a li\u00ean k\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng <strong>SNMP<\/strong>, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee7 \u0111\u1ed9ng gi\u00e1m s\u00e1t c\u00e1c b\u1ed9 thu ph\u00e1t n\u00e0y \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 m\u1ea1ng. M\u1ed9t gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t m\u1ea1ng m\u1ea1nh m\u1ebd c\u00f3 th\u1ec3 truy v\u1ea5n c\u00e1c b\u1ed9 thu ph\u00e1t \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n th\u1eddi gian th\u1ef1c, cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft m\u00e0 m\u1eaft th\u01b0\u1eddng kh\u00f4ng th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c ch\u1ec9 s\u1ed1 ch\u00ednh c\u1ee7a b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 truy c\u1eadp qua SNMP:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Nhi\u1ec7t \u0111\u1ed9:<\/strong> Li\u1ec7u m\u00f4-\u0111un c\u00f3 \u0111ang qu\u00e1 n\u00f3ng?<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>\u0110i\u1ec7n \u00e1p ngu\u1ed3n:<\/strong> Li\u1ec7u n\u00f3 c\u00f3 \u0111ang nh\u1eadn ngu\u1ed3n \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh?<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>D\u00f2ng \u0111i\u1ec7n thi\u00ean \u00e1p TX:<\/strong> D\u00f2ng \u0111i\u1ec1u khi\u1ec3n laser; c\u00e1c gi\u00e1 tr\u1ecb b\u1ea5t th\u01b0\u1eddng cho th\u1ea5y s\u1ef1 c\u1ed1 s\u1eafp x\u1ea3y ra.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>C\u00f4ng su\u1ea5t TX &amp; c\u00f4ng su\u1ea5t RX:<\/strong> \u0110\u1ed9 m\u1ea1nh c\u1ee7a t\u00edn hi\u1ec7u quang \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i v\u00e0 nh\u1eadn v\u00e0o.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch theo d\u00f5i nh\u1eefng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM)<\/strong><\/a> or <strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/strong> th\u00f4ng s\u1ed1 n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00e0nh ph\u1ea7n \u0111ang suy gi\u1ea3m <em>tr\u01b0\u1edbc khi<\/em> tr\u01b0\u1edbc khi ch\u00fang g\u00e2y ra s\u1ef1 c\u1ed1 to\u00e0n b\u1ed9 li\u00ean k\u1ebft.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u0110\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 thu ph\u00e1t LINK-PP<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Khi tri\u1ec3n khai c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 <strong>transceiver quang h\u1ecdc LINK-PP<\/strong>, b\u1ea1n c\u1ea7n m\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t c\u00f3 th\u1ec3 khai th\u00e1c \u0111\u1ea7y \u0111\u1ee7 kh\u1ea3 n\u0103ng c\u1ee7a ch\u00fang. V\u00ed d\u1ee5, c\u00e1c m\u00f4-\u0111un <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\"><strong>SFP-10G-SR<br><\/strong><\/a> ho\u1eb7c m\u00f4-\u0111un m\u1eadt \u0111\u1ed9 cao <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473115.htm\"><strong>QSFP28-100G-SR4<br><\/strong><\/a> cung c\u1ea5p d\u1eef li\u1ec7u DDM to\u00e0n di\u1ec7n, c\u00f3 th\u1ec3 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0o n\u1ec1n t\u1ea3ng qu\u1ea3n l\u00fd SNMP c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y cho ph\u00e9p b\u1ea1n t\u1ea1o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n t\u00f9y ch\u1ec9nh v\u00e0 c\u1ea3nh b\u00e1o. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp ng\u01b0\u1ee1ng \u0111\u1ec3 nh\u1eadn c\u1ea3nh b\u00e1o SNMP n\u1ebfu <strong>C\u00f4ng su\u1ea5t thu (RX)<\/strong> tr\u00ean m\u1ed9t li\u00ean k\u1ebft quan tr\u1ecdng s\u1eed d\u1ee5ng b\u1ed9 thu ph\u00e1t <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi m\u1ee9c dBm nh\u1ea5t \u0111\u1ecbnh, gi\u00fap b\u1ea1n ch\u1ea9n \u0111o\u00e1n s\u1edbm s\u1ee3i quang b\u1ea9n ho\u1eb7c m\u00f4-\u0111un h\u1ecfng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 V\u00ec sao b\u1ea1n v\u1eabn c\u1ea7n SNMP ng\u00e0y nay<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong k\u1ef7 nguy\u00ean qu\u1ea3n l\u00fd d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y v\u00e0 API, <strong>SNMP<\/strong> SNMP v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>T\u00ednh ph\u1ed5 bi\u1ebfn:<\/strong> N\u00f3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi g\u1ea7n nh\u01b0 m\u1ecdi thi\u1ebft b\u1ecb m\u1ea1ng.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Nh\u1eb9:<\/strong> N\u00f3 c\u00f3 m\u1ee9c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 thi\u1ebft b\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Chu\u1ea9n h\u00f3a:<\/strong> N\u00f3 cung c\u1ea5p m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Gi\u00e1m s\u00e1t ch\u1ee7 \u0111\u1ed9ng:<\/strong> C\u01a1 ch\u1ebf trap cho ph\u00e9p c\u1ea3nh b\u00e1o th\u1eddi gian th\u1ef1c, d\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c giao th\u1ee9c m\u1edbi h\u01a1n nh\u01b0 RESTCONF v\u00e0 NETCONF \u0111ang ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn trong vi\u1ec7c c\u1ea5u h\u00ecnh, th\u00ec v\u1ecb th\u1ebf th\u1ed1ng tr\u1ecb c\u1ee7a SNMP trong thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb xa (telemetry) v\u00e0 gi\u00e1m s\u00e1t s\u1ef1 c\u1ed1 v\u1eabn kh\u00f4ng th\u1ec3 thay th\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2705 B\u1eaft \u0111\u1ea7u v\u1edbi gi\u00e1m s\u00e1t SNMP<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eb5n s\u00e0ng khai th\u00e1c s\u1ee9c m\u1ea1nh c\u1ee7a SNMP? D\u01b0\u1edbi \u0111\u00e2y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c thi\u1ebft b\u1ecb tr\u1ecdng y\u1ebfu:<\/strong> B\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c switch l\u00f5i, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 t\u01b0\u1eddng l\u1eeda c\u1ee7a b\u1ea1n.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Ch\u1ecdn tr\u00ecnh qu\u1ea3n l\u00fd SNMP:<\/strong> Kh\u00e1m ph\u00e1 c\u00e1c l\u1ef1a ch\u1ecdn t\u1eeb c\u00e1c c\u00f4ng c\u1ee5 m\u00e3 ngu\u1ed3n m\u1edf mi\u1ec5n ph\u00ed \u0111\u1ebfn c\u00e1c n\u1ec1n t\u1ea3ng c\u1ea5p doanh nghi\u1ec7p.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>C\u1ea5u h\u00ecnh SNMPv3:<\/strong> K\u00edch ho\u1ea1t SNMPv3 tr\u00ean c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee7a b\u1ea1n v\u1edbi t\u00ean ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1eadt kh\u1ea9u ri\u00eang bi\u1ec7t.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Kh\u00e1m ph\u00e1 c\u00e1c MIB c\u1ee7a b\u1ea1n:<\/strong> Nh\u1eadp c\u00e1c t\u1ec7p MIB d\u00e0nh ri\u00eang cho ph\u1ea7n c\u1ee9ng c\u1ee7a b\u1ea1n (bao g\u1ed3m c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb c\u00f3 <a href=\"https:\/\/www.link-pp.com\/\" target=\"_blank\" rel=\"\"><strong>LINK-PP<\/strong><\/a> th\u00e0nh ph\u1ea7n) v\u00e0o tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u1ec3 m\u1edf kh\u00f3a to\u00e0n b\u1ed9 c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u kh\u1ea3 d\u1ee5ng.<\/p><\/li>\n\n\n\n<li><p style=\"margin: 0px;\"><strong>Thi\u1ebft l\u1eadp c\u1ea3nh b\u00e1o quan tr\u1ecdng:<\/strong> B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c trap cho c\u00e1c s\u1ef1 ki\u1ec7n then ch\u1ed1t nh\u01b0 l\u1ed7i k\u1ebft n\u1ed1i, m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng cao <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-cpu-central-processing-unit\/\" target=\"_blank\" rel=\"\"><strong>CPU<\/strong><\/a>, v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb c\u1ea3m bi\u1ebfn quang b\u1ea5t th\u01b0\u1eddng.<\/p><\/li>\n<\/ol>\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\">B\u1ea1n c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o b\u1eb1ng SNMP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SNMP cho ph\u00e9p b\u1ea1n ki\u1ec3m so\u00e1t nhi\u1ec1u thi\u1ebft b\u1ecb m\u1ea1ng. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 v\u1edbi b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, switch, m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y in. N\u00f3 c\u0169ng ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c h\u1ed7 tr\u1ee3 SNMP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u01a1 s\u1edf Th\u00f4ng tin Qu\u1ea3n l\u00fd (MIB) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01a1 s\u1edf Th\u00f4ng tin Qu\u1ea3n l\u00fd gi\u1ed1ng nh\u01b0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1eb7c bi\u1ec7t. N\u00f3 l\u01b0u tr\u1eef chi ti\u1ebft v\u1ec1 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee7a b\u1ea1n. SNMP s\u1eed d\u1ee5ng C\u01a1 s\u1edf Th\u00f4ng tin Qu\u1ea3n l\u00fd \u0111\u1ec3 s\u1eafp x\u1ebfp v\u00e0 t\u00ecm ki\u1ebfm d\u1eef li\u1ec7u thi\u1ebft b\u1ecb.<\/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\">M\u1eb9o: C\u00e1c MIB gi\u00fap b\u1ea1n \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n SNMP c\u0169 h\u01a1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c phi\u00ean b\u1ea3n SNMP c\u0169 h\u01a1n kh\u00f4ng b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. M\u1ed9t ng\u01b0\u1eddi n\u00e0o \u0111\u00f3 c\u00f3 th\u1ec3 xem ho\u1eb7c thay \u0111\u1ed5i th\u00f4ng tin m\u1ea1ng c\u1ee7a b\u1ea1n. H\u00e3y s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Giao th\u1ee9c Qu\u1ea3n l\u00fd M\u1ea1ng \u0110\u01a1n gi\u1ea3n (SNMP) cho ph\u00e9p gi\u00e1m s\u00e1t v\u00e0 qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng quan s\u00e1t, ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o m\u1eadt.<\/p>","protected":false},"author":1,"featured_media":4407,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[24,26],"class_list":["post-4409","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4409","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=4409"}],"version-history":[{"count":7,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4409\/revisions"}],"predecessor-version":[{"id":10906,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4409\/revisions\/10906"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4407"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}