{"id":503,"date":"2012-11-17T11:42:40","date_gmt":"2012-11-17T13:42:40","guid":{"rendered":"http:\/\/efagundes.com\/openclass_networking\/?page_id=503"},"modified":"2022-01-16T17:51:15","modified_gmt":"2022-01-16T20:51:15","slug":"sdh-capacidade-de-transporte","status":"publish","type":"page","link":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-capacidade-de-transporte\/","title":{"rendered":"SDH &#8211; Capacidade de transporte"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2498\" data-permalink=\"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-capacidade-de-transporte\/slide12-6\/\" data-orig-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg?fit=960%2C720&amp;ssl=1\" data-orig-size=\"960,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Slide12\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg?fit=960%2C720&amp;ssl=1\" class=\"alignnone size-full wp-image-2498\" src=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg?resize=960%2C720\" alt=\"Slide12\" width=\"960\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg?w=960&amp;ssl=1 960w, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide125.jpg?resize=300%2C225&amp;ssl=1 300w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/p>\n<p>Vantagens e Restri\u00e7\u00f5es<\/p>\n<p>As redes SDH oferecem v\u00e1rios benef\u00edcios, quando comparada com outras tecnologias:<\/p>\n<ul>\n<li>O cabe\u00e7alho complexo existente no frame SDH permite a ger\u00eancia (administra\u00e7\u00e3o, opera\u00e7\u00e3o e manuten\u00e7\u00e3o) centralizada da rede;<\/li>\n<li>A arquitetura de multiplexa\u00e7\u00e3o s\u00edncrona e a padroniza\u00e7\u00e3o tanto em n\u00edvel de equipamentos como de interfaces, permite o crescimento para n\u00edveis mais altos de multiplexa\u00e7\u00e3o e taxas de bits;<\/li>\n<li>A estrutura de multiplexa\u00e7\u00e3o \u00e9 flex\u00edvel, permitindo o transporte de sinais PDH (e at\u00e9 mesmo de c\u00e9lulas ATM) e o acesso aos tribut\u00e1rios de qualquer hierarquia num \u00fanico equipamento;<\/li>\n<li>A forte padroniza\u00e7\u00e3o do SDH permite maior compatibilidade entre equipamentos de fabricantes diferentes, tanto atrav\u00e9s de interfaces el\u00e9tricas como \u00f3pticas;<\/li>\n<li>Os equipamentos possuem mecanismos que permitem implementar procedimentos de prote\u00e7\u00e3o tanto nas interfaces de tribut\u00e1rios como na rede, facilitando a forma\u00e7\u00e3o de redes em anel ou malha.<\/li>\n<\/ul>\n<p>Entretanto, a tecnologia SDH apresenta ainda as seguintes desvantagens:<\/p>\n<ul>\n<li>O\u00a0 projeto, instala\u00e7\u00e3o e opera\u00e7\u00e3o da rede SDH \u00e9 complexo e deve ser feito com um planejamento criterioso e detalhado;<\/li>\n<li>Apesar da forte padroniza\u00e7\u00e3o de equipamentos e da tecnologia SDH, a padroniza\u00e7\u00e3o dos sistemas de ger\u00eancia de rede ainda n\u00e3o \u00e9 um fato, impedindo que equipamentos de fabricantes diferentes possam ser gerenciados por um sistema \u00fanico.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vantagens e Restri\u00e7\u00f5es As redes SDH oferecem v\u00e1rios benef\u00edcios, quando comparada com outras tecnologias: O cabe\u00e7alho complexo existente no frame SDH permite a ger\u00eancia (administra\u00e7\u00e3o, opera\u00e7\u00e3o e manuten\u00e7\u00e3o) centralizada da rede; A arquitetura de multiplexa\u00e7\u00e3o s\u00edncrona e a padroniza\u00e7\u00e3o tanto em n\u00edvel de equipamentos como de interfaces, permite o crescimento para n\u00edveis mais altos de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1333,"menu_order":10,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-503","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P8yKGp-87","jetpack-related-posts":[{"id":501,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-processo-de-multiplexacao\/","url_meta":{"origin":503,"position":0},"title":"SDH &#8211; Processo de multiplexa\u00e7\u00e3o","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"O processo de multiplexa\u00e7\u00e3o dos canais tribut\u00e1rios no frame SDH tem os seguintes passos: Mapeamento, onde os tribut\u00e1rios s\u00e3o sincronizados com o equipamento multiplex (justifica\u00e7\u00e3o de bit), encapsulados e recebem seus ponteiros (POH) para formar os VC's; Alinhamento, onde os VC's recebem novos ponteiros para formarem as unidades TU (Tributary\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide10","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=700%2C400 2x"},"classes":[]},{"id":490,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-sonet\/","url_meta":{"origin":503,"position":1},"title":"SDH-SONET","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"No in\u00edcio da utiliza\u00e7\u00e3o da fibra \u00f3ptica, cada companhia telef\u00f4nica tinha seu pr\u00f3prio padr\u00e3o de multiplexa\u00e7\u00e3o TDM patenteado. Depois que a AT&T foi desmembrada em 1984, as companhias telef\u00f4nicas tiveram que padronizar seus sistemas para permitir a interconex\u00e3o para chamadas de longas dist\u00e2ncias. Em 1985, a Bellcore, a unidade de\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide7","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide75.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide75.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide75.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide75.jpg?resize=700%2C400 2x"},"classes":[]},{"id":300,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/aplicacao-de-fibra-com-dwdm\/","url_meta":{"origin":503,"position":2},"title":"Aplica\u00e7\u00e3o de fibra com DWDM","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"Multiplexa\u00e7\u00e3o por Divis\u00e3o de Onda Densa (DWDM) Os sistemas submarinos atuais t\u00eam capacidade de transmitir v\u00e1rios sinais \u00f3pticos independentes, cada um com um comprimento de onda caracter\u00edstico (lambda). O m\u00e9todo pelo qual v\u00e1rios sinais em diferentes comprimentos de onda s\u00e3o combinados numa \u00fanica fibra \u00e9 conhecido pelo nome de multiplexa\u00e7\u00e3o\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide30","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide301.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide301.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide301.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide301.jpg?resize=700%2C400 2x"},"classes":[]},{"id":498,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-estrutura-do-frame\/","url_meta":{"origin":503,"position":3},"title":"SDH &#8211; Estrutura do frame","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"\u00a0 A hierarquia SDH foi concebida para uma arquitetura de multiplexa\u00e7\u00e3o s\u00edncrona. Cada canal opera com um rel\u00f3gio sincronizado com os rel\u00f3gios dos outros canais, e \u00e9 sincronizado com o equipamento multiplex atrav\u00e9s de um processo de justifica\u00e7\u00e3o de bit e encapsulamento da informa\u00e7\u00e3o (cont\u00eainer). A esse cont\u00eainer \u00e9 adicionado\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide11","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide119.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide119.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide119.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide119.jpg?resize=700%2C400 2x"},"classes":[]},{"id":505,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/evolucao-do-transporte-ip-por-fibra-optica\/","url_meta":{"origin":503,"position":4},"title":"Evolu\u00e7\u00e3o do transporte IP por fibra \u00f3ptica","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"Transporte IP. 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