{"id":745,"date":"2018-07-11T22:55:37","date_gmt":"2018-07-11T15:55:37","guid":{"rendered":"https:\/\/lagonet.vn\/?p=745"},"modified":"2018-07-11T22:55:37","modified_gmt":"2018-07-11T15:55:37","slug":"su-khac-nhau-giua-switching-capacity-va-forwarding-rate","status":"publish","type":"post","link":"https:\/\/kb.lagonet.vn\/?p=745","title":{"rendered":"S\u1ef0 KH\u00c1C NHAU GI\u1eeeA SWITCHING CAPACITY V\u00c0 FORWARDING RATE"},"content":{"rendered":"

Ch\u00e0o c\u00e1c b\u1ea1n, ch\u1eafc h\u1eb3n ai \u0111i mua switch c\u0169ng \u0111\u1ec1u quan t\u00e2m \u0111\u1ebfn th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ee7a ch\u00fang. \u0110\u00f3 ch\u00ednh l\u00e0\u00a0SWITCHING CAPACITY V\u00c0 FORWARDING RATE.<\/p>\n

V\u1eady ch\u00fang l\u00e0 g\u00ec v\u00e0 l\u00e0m sao ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c ch\u00fang.<\/p>\n

T\u00f4i c\u00f3 h\u00ecnh minh h\u1ecda sau \u0111\u1ec3 so s\u00e1nh c\u00e1c switch:<\/p>\n

\"switching-capacity-vs-forwarding-rate\"
Ph\u00e2n bi\u1ec7t switching capacity v\u00e0 forwarding rate<\/figcaption><\/figure>\n

Nh\u00ecn v\u00e0o h\u00ecnh, v\u1eady s\u1ef1 kh\u00e1c nhau \u1edf \u0111\u00e2y l\u00e0 g\u00ec?<\/p>\n

Switch Fabric Capacity<\/strong>: N\u00f3 th\u01b0\u1eddng c\u00f3 \u00fd l\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 ph\u1ea7n c\u1ee9ng c\u00f3 th\u1ec3 chuy\u1ec3n th\u00f4ng tin gi\u1eefa cards\/ports. Tuy nhi\u00ean n\u00f3 kh\u00f4ng t\u00ednh to\u00e1n th\u1eddi gian d\u00e0nh ra \u0111\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c c\u1ed5ng ourput cho frames ho\u1eb7c packets. N\u00f3 th\u01b0\u1eddng vi\u1ebft ra v\u1edbi \u0111\u01a1n v\u1ecb bit per second (bps) v\u00e0 lu\u00f4n lu\u00f4n g\u1ea5p 2 l\u1ea7n c\u00e1i m\u00e0 th\u1ef1c s\u1ef1 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t t\u00ednh tr\u00ean ch\u1ebf \u0111\u1ed9 full duplex c\u1ee7a c\u1ed5ng.<\/p>\n

Forwarding Rate<\/strong>: N\u00f3 th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 s\u1eed l\u00fd th\u1ef1c s\u1ef1 s\u1eed d\u1ee5ng to\u00e0n b\u1ed9 c\u00f4ng su\u1ea5t v\u00e0 n\u0103ng l\u1ef1c c\u1ee7a m\u00ecnh \u0111\u1ec3 forward frames v\u00e0 packets, bao g\u1ed3m delays c\u00f9ng v\u1edbi l\u01b0u v\u00e0 forward, MAC\/ tra b\u1ea3ng \u0111\u1ecbnh tuy\u1ebfn v\u00e0 t\u01b0\u01a1ng t\u1ef1. N\u00f3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng packets per second (pps) v\u00e0 tr\u00ean c\u01a1 s\u1edf v\u1edbi packet size t\u00f9y \u00fd, c\u00e1i m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ea5y t\u1ed1t. Ch\u00fang ta c\u1ea7n \u0111\u00e0o s\u00e2u v\u00e0o m\u1ed7i lo\u1ea1i switch \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf ch\u00fang. V\u00ed d\u1ee5, t\u00f4i bi\u1ebft m\u1ed9t lao\u1ecb switch c\u00f3 mainboard (hay l\u00e0 backplane) kh\u1ee7ng, nh\u01b0ng khi b\u1ea1n nh\u00ecn v\u00e0o 10 Gbps line cards, m\u1ed7i 3 c\u1ed5ng s\u1eed d\u1ee5ng 1 ASIC c\u00e1i m\u00e0 c\u00f3 th\u1ec3 s\u1eed l\u00fd 12Gbps. Ch\u00fang ta c\u1ea7n s\u1eed d\u1ee5ng 10G SFP+ v\u00e0 2 SFPs 1G tr\u00ean 1 ASIC \u0111\u1ec3 m\u00e0 kh\u00f4ng sinh ra m\u1ea5t frame? C\u00e2u h\u1ecfi n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng c\u00e1ch s\u1ea3n xu\u1ea5t ra v\u00e0 model c\u1ee7a switch.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ch\u00e0o c\u00e1c b\u1ea1n, ch\u1eafc h\u1eb3n ai \u0111i mua switch c\u0169ng \u0111\u1ec1u quan t\u00e2m \u0111\u1ebfn th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ee7a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[29,25,16,19,6],"tags":[],"class_list":["post-745","post","type-post","status-publish","format-standard","hentry","category-ccie-rs","category-cisco","category-courses","category-issues","category-networking"],"_links":{"self":[{"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=\/wp\/v2\/posts\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=745"}],"version-history":[{"count":0,"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=\/wp\/v2\/posts\/745\/revisions"}],"wp:attachment":[{"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kb.lagonet.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}