{"id":5829,"date":"2018-05-16T08:44:03","date_gmt":"2018-05-16T08:44:03","guid":{"rendered":"https:\/\/vinacap.vn\/?post_type=tin-tuc&p=5829"},"modified":"2023-06-13T08:33:34","modified_gmt":"2023-06-13T08:33:34","slug":"phan-biet-va-chon-dung-loai-cap-mang-lan","status":"publish","type":"tin-tuc","link":"https:\/\/vinacap.vn\/zh\/archives\/tin-tuc\/phan-biet-va-chon-dung-loai-cap-mang-lan","title":{"rendered":"PH\u00c2N BI\u1ec6T V\u00c0 CH\u1eccN \u0110\u00daNG LO\u1ea0I C\u00c1P M\u1ea0NG LAN"},"content":{"rendered":"

Hi\u1ec7n nay, khi c\u00f3 nhu c\u1ea7u k\u1ebft n\u1ed1i m\u1ea1ng Internet cho m\u00e1y t\u00ednh ho\u1eb7c t\u1ea1o m\u1ea1ng n\u1ed9i b\u1ed9 LAN, ph\u1ea7n l\u1edbn ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u1eeda h\u00e0ng b\u00e1n linh ki\u1ec7n m\u00e1y t\u00ednh mua c\u00e1p m\u1ea1ng LAN m\u00e0 kh\u00f4ng quan t\u00e2m \u0111\u1ebfn t\u00ednh n\u0103ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1p. Tr\u00ean th\u1ef1c t\u1ebf, m\u1ed7i lo\u1ea1i c\u00e1p LAN d\u00f9ng cho nh\u1eefng nhu c\u1ea7u hay v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t kh\u00e1c nhau, v\u00e0 n\u1ebfu c\u00e1p kh\u00f4ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng th\u00ec t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u qua c\u00e1p n\u00e0y s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n

V\u1ec1 m\u1eb7t c\u1ea5u t\u1ea1o th\u00ec c\u00f3 2 lo\u1ea1i c\u00e1p: c\u00e1p \u0111\u1ed3ng tr\u1ee5c (c\u1ee9ng, lo\u1ea1i c\u00e1p d\u00f9ng trong truy\u1ec1n h\u00ecnh c\u00e1p), c\u00e1p xo\u1eafn \u0111\u00f4i (m\u1ec1m v\u00e0 r\u1ebb, d\u00f9ng h\u1ea7u h\u1ebft trong c\u00e1c m\u1ea1ng LAN hi\u1ec7n nay). C\u0103n c\u1ee9 v\u00e0o c\u00e1c th\u00f4ng s\u1ed1 ghi tr\u00ean v\u1ecf c\u00e1p, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng v\u00e0 t\u00ednh n\u0103ng c\u1ee7a c\u00e1p LAN. Ngo\u00e0i ra, vi\u1ec7c quan s\u00e1t v\u1ecf c\u00e1p c\u0169ng ph\u1ea7n n\u00e0o x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eabn c\u1ee7a c\u00e1p.<\/p>\n

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1. T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn c\u1ee7a c\u00e1p LAN:<\/strong><\/p>\n

\u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh c\u1ee7a c\u00e1p LAN trong vi\u1ec7c ph\u00e2n chia lo\u1ea1i c\u00e1p. Theo l\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u00e1p LAN, lo\u1ea1i c\u00e1p LAN c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn cao nh\u1ea5t l\u00e0 Cat7a h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn \u0111\u1ebfn 1000 Mbps (t\u1ee9c l\u00e0 1000 mega-bit m\u1ed7i gi\u00e2y, hay 125 mega-byte m\u1ed7i gi\u00e2y), hay c\u00f2n g\u1ecdi l\u00e0 lo\u1ea1i c\u00e1p h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 giga-bit (Gbps) d\u00f9ng cho c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng \u0111\u1eddi m\u1edbi v\u1ed1n d\u0129 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 Gbps. C\u00e1ch vi\u1ebft 1000 Mbps hay 1000 Mb\/s l\u00e0 nh\u01b0 nhau.<\/p>\n

Tr\u01b0\u1edbc lo\u1ea1i c\u00e1p Cat7a l\u00e0 c\u00e1c lo\u1ea1i c\u00e1p c\u00f3 t\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n. \u0110\u00f3 l\u00e0, Cat3 (16 Mbps), Cat4 (20 Mbps), Cat5 (100 Mbps), Cat5e (100 Mbps), Cat6 (250 Mbps), Cat6a (250 Mbps), Cat7 (600 Mbps). Trong \u0111\u00f3, c\u00e1p Cat5 c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i 100 Mbps l\u00e0 lo\u1ea1i c\u00e1p m\u00e0 ch\u00fang ta th\u01b0\u1eddng d\u00f9ng trong m\u1ea1ng LAN hay k\u1ebft n\u1ed1i gi\u1eefa modem ADSL v\u1edbi m\u00e1y t\u00ednh qua c\u1ed5ng RJ-45. M\u1eb7c d\u00f9 c\u00f9ng t\u1ed1c \u0111\u1ed9 100 Mbps nh\u01b0ng lo\u1ea1i Cat5e h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 song c\u00f4ng n\u00ean \u0111\u01b0\u1ee3c xem l\u00e0 lo\u1ea1i c\u00e1p cao c\u1ea5p h\u01a1n Cat5 v\u00e0 gi\u00e1 c\u1ee7a n\u00f3 v\u00ec th\u1ebf m\u00e0 c\u0169ng kh\u00e1 cao, \u00edt \u0111\u01b0\u1ee3c d\u00f9ng. Tuy nhi\u00ean d\u00f9 l\u00e0 lo\u1ea1i c\u00e1p n\u00e0o \u0111i ch\u0103ng n\u1eefa th\u00ec \u0111\u1ed9 d\u00e0i t\u1ed1i \u0111a c\u1ee7a c\u00e1p LAN xo\u1eafn \u0111\u00f4i l\u00e0 100 m.\\<\/p>\n

\"\"<\/p>\n

2.C\u00e1c th\u00f4ng s\u1ed1 ghi tr\u00ean v\u1ecf c\u00e1p:<\/strong><\/p>\n

Khi nh\u00ecn k\u1ef9 s\u1ee3i c\u00e1p LAN, b\u1ea1n s\u1ebd th\u1ea5y kh\u00e1 nhi\u1ec1u nh\u00f3m k\u00fd t\u1ef1, m\u1ed7i nh\u00f3m k\u00fd t\u1ef1 th\u01b0\u1eddng \u0111\u1eb7c tr\u01b0ng cho m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1p.<\/p>\n

UTP l\u00e0 lo\u1ea1i c\u00e1p kh\u00f4ng c\u00f3 l\u1edbp ch\u1ed1ng nhi\u1ec5u cho t\u00edn hi\u1ec7u truy\u1ec1n d\u1eabn, STP th\u00ec c\u00f3 l\u1edbp ch\u1ed1ng nhi\u1ec5u.<\/p>\n

MPP hay CMP (c\u00f3 th\u1ec3 ghi k\u00e8m theo ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m UL910 hay CSA FT16) l\u00e0 lo\u1ea1i c\u00e1p d\u00f9ng \u0111\u1ec3 \u0111i tr\u00ean tr\u1ea7n nh\u00e0.<\/p>\n

MPR ho\u1eb7c CMR (v\u00e0 c\u0169ng c\u00f3 th\u1ec3 ghi k\u00e8m UL1666 nh\u1eb1m th\u1ec3 hi\u1ec7n ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m) c\u00f3 tr\u00ean v\u1ecf c\u00e1c lo\u1ea1i c\u00e1p \u0111i gi\u1eefa c\u00e1c t\u1ea7ng.<\/p>\n

N\u1ebfu kh\u00f4ng ph\u1ea3i l\u00e0 lo\u1ea1i c\u00e1p \u0111\u1eb7c ch\u1ee7ng th\u00ec tr\u00ean v\u1ecf c\u00e1p th\u01b0\u1eddng c\u00f3 m\u1ed9t trong s\u1ed1 c\u00e1c nh\u00f3m k\u00fd t\u1ef1 MPG, CMG, MP, CM, cho bi\u1ebft \u0111\u00e2y l\u00e0 lo\u1ea1i c\u00e1p b\u00ecnh th\u01b0\u1eddng.<\/p>\n

Ngo\u00e0i ra, m\u1ed9t s\u1ed1 \u00edt lo\u1ea1i c\u00e1p c\u00f3 ghi nh\u00f3m k\u00fd t\u1ef1 CMUC \u0111\u1ec3 ch\u1ec9 r\u00f5 \u0111\u00e2y l\u00e0 lo\u1ea1i c\u00e1p d\u00f9ng \u0111\u1ec3 \u0111i d\u01b0\u1edbi th\u1ea3m tr\u1ea3i s\u00e0n.<\/p>\n

\u0110\u1ed1i v\u1edbi vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u00e1y t\u00ednh trong m\u1ea1ng LAN v\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng truy\u1ec1n t\u1ea3i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, hay kh\u00f4ng \u0111o t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u, c\u00e1c nh\u00f3m k\u00fd t\u1ef1 ghi tr\u00ean v\u1ecf c\u00e1p kh\u00f4ng c\u00f3 nhi\u1ec1u gi\u00e1 tr\u1ecb. Nh\u01b0ng n\u1ebfu d\u00f9ng \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u h\u00ecnh \u1ea3nh l\u1ea5y t\u1eeb camera (webcam) \u0111\u1eb7t \u1edf xa v\u1ec1 m\u00e1y t\u00ednh \u0111i\u1ec1u khi\u1ec3n hay m\u00e0n chi\u1ebfu th\u00ec vi\u1ec7c xem k\u1ef9 c\u00e1c nh\u00f3m k\u00fd t\u1ef1 tr\u00ean v\u1ecf c\u00e1p v\u00e0 ch\u1ecdn \u0111\u00fang lo\u1ea1i c\u00e1p s\u1ebd cho h\u00ecnh \u1ea3nh r\u00f5 v\u00e0 \u00edt b\u1ecb nhi\u1ec5u t\u00edn hi\u1ec7u.<\/p>\n

\"\"<\/p>\n

3. M\u1ed9t s\u1ed1 c\u00e1ch nh\u1eadn bi\u1ebft c\u00e1p LAN \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng:<\/strong><\/p>\n

Theo \u00f4ng V\u0169 Minh L\u00e2m – Gi\u00e1m \u0111\u1ed1c nh\u00e0 M\u00e1y VINACAP, Tr\u01b0\u1edfng\u00a0nh\u00f3m nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m m\u1edbi c\u1ee7a C\u00f4ng ty VINACAP,\u00a0c\u00e1p LAN \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eabn th\u01b0\u1eddng c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m: \u201cV\u1ecf ngo\u00e0i l\u00e1ng m\u1ecbn, tr\u00f2n \u0111\u1ec1u, m\u00e0u s\u1eafc kh\u00f4ng b\u1ecb pha tr\u1ed9n. L\u1edbp nh\u1ef1a c\u00e1ch \u0111i\u1ec7n c\u1ee7a m\u1ed7i s\u1ee3i d\u00e2y d\u1eabn nh\u1ecf b\u00ean trong s\u1ee3i c\u00e1p c\u0169ng ph\u1ea3i l\u00e1ng m\u1ecbn, kh\u00f4ng b\u1ecb pha m\u00e0u v\u00e0 kh\u00f4ng l\u1ec7ch t\u00e2m. Th\u00e2n c\u00e1p c\u00f3 in k\u00fd hi\u1ec7u v\u1ec1 \u0111\u1ed9 d\u00e0i d\u00e2y c\u00e1p v\u00e0 sai s\u1ed1 nh\u1ecf h\u01a1n 0,3%. Khi b\u00f3c c\u00e1c s\u1ee3i d\u00e2y truy\u1ec1n d\u1eabn b\u00ean trong d\u00e2y c\u00e1p, b\u1ea1n s\u1ebd th\u1ea5y ch\u00fang c\u00f3 \u0111\u1ed9 s\u00e1ng b\u00f3ng v\u00e0 tr\u00f2n \u0111\u1ec1u…\u201d.<\/p>\n

Ngo\u00e0i vi\u1ec7c ch\u1ecdn lo\u1ea1i c\u00e1p \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn t\u1ed1i \u0111a, b\u1ea1n c\u0169ng c\u1ea7n ch\u1ecdn lo\u1ea1i c\u00e1p c\u00f3 v\u1ecf ngo\u00e0i l\u00e0 nh\u1ef1a PE, \u0111\u01b0\u1ee3c b\u01a1m d\u1ea7u b\u00ean trong ho\u1eb7c c\u00f3 b\u0103ng ch\u1ed1ng th\u1ea5m \u0111\u1ec3 \u0111i ngo\u00e0i tr\u1eddi, thay v\u00ec ch\u1ecdn lo\u1ea1i r\u1ebb ti\u1ec1n c\u00f3 v\u1ecf ngo\u00e0i t\u1ea1o t\u1eeb nh\u1ef1a PVC d\u00f9ng \u0111\u1ec3 l\u1eafp trong nh\u00e0. V\u00e0 m\u1ed9t \u0111i\u1ec1u \u0111\u01a1n gi\u1ea3n, mu\u1ed1n m\u1ea1ng LAN \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 Gbps, b\u1ea1n ph\u1ea3i s\u1eafm t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng li\u00ean quan ch\u1ee9 vi\u1ec7c \u0111\u1ed5i t\u1eeb c\u00e1p 100 Mbps l\u00ean 1000 MBps th\u00f4i l\u00e0 ch\u01b0a \u0111\u1ee7.<\/p>","protected":false},"featured_media":5823,"parent":0,"menu_order":0,"template":"","tags":[],"category-news":[102,103],"class_list":["post-5829","tin-tuc","type-tin-tuc","status-publish","has-post-thumbnail","hentry","category-news-tin-cong-nghe","category-news-tin-cong-ty"],"acf":[],"_links":{"self":[{"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/tin-tuc\/5829","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/tin-tuc"}],"about":[{"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/types\/tin-tuc"}],"version-history":[{"count":1,"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/tin-tuc\/5829\/revisions"}],"predecessor-version":[{"id":7556,"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/tin-tuc\/5829\/revisions\/7556"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/media\/5823"}],"wp:attachment":[{"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/media?parent=5829"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/tags?post=5829"},{"taxonomy":"category-news","embeddable":true,"href":"https:\/\/vinacap.vn\/zh\/wp-json\/wp\/v2\/category-news?post=5829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}