[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-216884-en":3,"doc-seo-216884-105":30,"detail-sidebar-cat-0-en-105":96},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},216884,137441390410,"Hazel","https://ap-avatar.wpscdn.com/avatar/2000252f4ab5702993?_k=1776741390130283984",8,"Research & Report","High Performance Dark Fiber Infrastructure - SC25 Network Research Exhibition","The University of Sao Paulo (USP) presents a dark fiber infrastructure interconnecting four campuses in São Paulo, enabled by state legislation allowing deployment of ducts and fibers along state highways. The system uses buried fiber-optic routing and supports current 100 Gbps capacity with projections to 600 Gbps by 2025 through scalable use of fiber pairs. USP plans 100–400 Gbps connectivity with Rednesp and integration with advanced services from SENSE, NRP, GP4L, RNP, and AmLight. The initiative expands research, advanced networking experiments, and high-scale data collaboration across Latin America.","SC25 Network Research Exhibition: Demonstration Publishable Abstract  \nUniversity of Sao Paulo (USP) High Performance Dark Fiber  \nInfrastructure  \nCarlos A Ruggiero, Rednesp/USP, [toto@ifsc.usp.br](toto@ifsc.usp.br, Harvey Newman, Caltech/GNA,)[, Harvey Newman, Caltech/GNA,](toto@ifsc.usp.br, Harvey Newman, Caltech/GNA,) [newman@hep.caltech.edu](newman@hep.caltech.edu), Joao Eduardo Ferreira, Rednesp/USP, [jef@ime.usp.br](jef@ime.usp.br), Jorge M Almeida, USP, [jorge@usp.br](jorge@usp.br, Ney Lemke, Rednesp/UNESP,)[, Ney Lemke, Rednesp/UNESP,](jorge@usp.br, Ney Lemke, Rednesp/UNESP,) [ney.lemke@unesp.br](ney.lemke@unesp.br), Sandro Rigo, Rednesp/UNICAMP, [srigo@unicamp.br](srigo@unicamp.br, Daniel M Batista, Rednesp/USP,)[, Daniel M Batista, Rednesp/USP,](srigo@unicamp.br, Daniel M Batista, Rednesp/USP,) [batista@ime.usp.br](batista@ime.usp.br, Ricardo Dahab, Rednesp/UNICAMP,)[, Ricardo Dahab, Rednesp/UNICAMP,](batista@ime.usp.br, Ricardo Dahab, Rednesp/UNICAMP,)[ ](batista@ime.usp.br, Ricardo Dahab, Rednesp/UNICAMP,)[rdahab@unicamp.br](rdahab@unicamp.br), Rogerio Motitsuki, Rednesp, [rogerio@rednesp.br](rogerio@rednesp.br), Bruno Baldim, Rednesp, bruno@rednesp.br , Paulo Simionato,  \nRednesp, [simionato@rednesp.br](simionato@rednesp.br), Geraldo Teodoro, Rednesp, [geraldo@rednesp.br](geraldo@rednesp.br)  \nAbstract  \nThe University of Sao Paulo, in Brazil,  \n([https://www5.usp.br/english/institutional/](https://www5.usp.br/english/institutional/)) is a public university, maintained by the State of Sao Paulo (see figure 1 showing the state of Sao Paulo and main international connections) and affiliated with the State Secretariat of Economic, Scientific and Technological Development. Various world rankings, created to measure the quality of universities according to diverse criteria, particularly those related to scientific productivity, have widely recognized the talent and dedication of USP professors, students and employees. USP has consistently appeared among the 100  \nbest universities in the world and the best in Latin America according to several international ranking organizations.  \nFigure 1: State of Sao Paulo (light green), Brazil, and its international connections  \nUSP has 10 campuses in the state of Sao Paulo. Its main campus is located at the city of Sao Paulo, the state capital. Together with the main campus, three other campuses are responsible for most of the internet traffic: Sao Carlos, Ribeirao Preto and Piracicaba.  \nIn 2016, USP decided to interconnect these 4 campuses via a dark fiber infrastructure. This was made possible by a state law that guarantees autarchies the right to use state  \nhighways for deploying their own ducts and fibers. See figure 2.  \nFigure 2 USP dark fiber backbone  \nAll inter-campus connections are established using fiber optic cables, each containing 36 pairs of fibers, which are routed through ducts buried more than one meter deep in the soil.  \nCurrently, the inter-campus bandwidth is 100 Gbps, with projections to reach 600 Gbps by the end of 2025 utilizing a limited number of fiber pairs. This demonstrates USP's capacity to readily scale this bandwidth to significantly higher values as required. Furthermore, this robust infrastructure facilitates a wide range of experiments in highperformance networking and fiber optic data communication technology.  \nThe primary USP campus located in São Paulo is currently connected to Rednesp at a speed of 100 Gbps, with an anticipated upgrade to 400 Gbps in the near future. Considering Rednesp's existing 800 Gbps connection to the United States, set to expand to 1 Tbps by the end of 2025, USP's campuses are poised for excellent connectivity with worldwide academic networks.  \nUSP intends to deploy of some of the advanced services which are being developed by SENSE, NRP and the GP4L, among other Sao Paulo universities and the Rednesp network including the dark fibers among them and the onward international connections together with RNP and Am","cbCaiqydDEYzFArH","https://ap.wps.com/l/cbCaiqydDEYzFArH","pdf",379932,1,2,"English","en",105,"# Abstract\n## Background: USP connectivity and dark fiber decision\n## Network architecture and capacity projections\n## Connectivity with Rednesp, RNP, and AmLight\n## Goals, impacts, and resources","[{\"question\":\"What enabled USP to deploy the dark fiber backbone between campuses?\",\"answer\":\"USP interconnects four campuses via dark fiber using a state law that guarantees autarchies the right to use state highways for deploying their own ducts and fibers.\"},{\"question\":\"What bandwidth is available now, and what is the projection by 2025?\",\"answer\":\"The inter-campus bandwidth is currently 100 Gbps, with projections to reach 600 Gbps by the end of 2025 using a limited number of fiber pairs.\"},{\"question\":\"How does the infrastructure support research beyond just bandwidth capacity?\",\"answer\":\"USP highlights that the robust dark fiber enables high-performance networking experiments, advanced data transfer methods, and the ability to create separate networks for teaching, administration, and dedicated R\\u0026D collaboration.\"}]","High Performance Dark Fiber Infrastructure - SC25 Network Research Exhibition | PDF",1788828133,5,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":91,"head_meta":93,"extra_data":95,"updated_unix":28},"high-performance-dark-fiber-infrastructure-sc25-network-research-exhibition","",{"@graph":36,"@context":90},[37,53,73],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,47,50],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":21},"https://docshare.wps.com/document/","Document",{"item":48,"name":12,"@type":43,"position":49},"https://docshare.wps.com/document/research-report/",3,{"item":51,"name":13,"@type":43,"position":52},"https://docshare.wps.com/document/high-performance-dark-fiber-infrastructure-sc25-network-research-exhibition/216884/",4,{"url":51,"name":13,"@type":54,"image":55,"author":60,"headline":13,"publisher":62,"fileFormat":65,"inLanguage":23,"description":14,"dateModified":66,"datePublished":67,"encodingFormat":65,"isAccessibleForFree":68,"interactionStatistic":69},"DigitalDocument",{"url":56,"@type":57,"width":58,"height":59},"https://docshare.wps.com/thumbnails/high-performance-dark-fiber-infrastructure-sc25-network-research-exhibition/216884.png","ImageObject",300,407,{"name":9,"@type":61},"Person",{"url":41,"name":63,"@type":64},"DocShare","Organization","application/pdf","2026-09-11","2026-09-08",true,{"@type":70,"interactionType":71,"userInteractionCount":20},"InteractionCounter",{"@type":72},"ViewAction",{"@type":74,"mainEntity":75},"FAQPage",[76,82,86],{"name":77,"@type":78,"acceptedAnswer":79},"What enabled USP to deploy the dark fiber backbone between campuses?","Question",{"text":80,"@type":81},"USP interconnects four campuses via dark fiber using a state law that guarantees autarchies the right to use state highways for deploying their own ducts and fibers.","Answer",{"name":83,"@type":78,"acceptedAnswer":84},"What bandwidth is available now, and what is the projection by 2025?",{"text":85,"@type":81},"The inter-campus bandwidth is currently 100 Gbps, with projections to reach 600 Gbps by the end of 2025 using a limited number of fiber pairs.",{"name":87,"@type":78,"acceptedAnswer":88},"How does the infrastructure support research beyond just bandwidth capacity?",{"text":89,"@type":81},"USP highlights that the robust dark fiber enables high-performance networking experiments, advanced data transfer methods, and the ability to create separate networks for teaching, administration, and dedicated R&D collaboration.","https://schema.org",{"og:url":51,"og:type":92,"og:title":13,"og:site_name":63,"og:description":14},"article",{"robots":94,"canonical":51},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":97},[98,102,106,110,114,119,124,127,132,135,139],{"id":20,"doc_module":4,"doc_module_name":46,"category_name":99,"show_sort_weight":100,"slug":101},"Story & Novel",90,"story-novel",{"id":21,"doc_module":4,"doc_module_name":46,"category_name":103,"show_sort_weight":104,"slug":105},"Literature",80,"literature",{"id":52,"doc_module":4,"doc_module_name":46,"category_name":107,"show_sort_weight":108,"slug":109},"Exam",70,"exam",{"id":29,"doc_module":4,"doc_module_name":46,"category_name":111,"show_sort_weight":112,"slug":113},"Comic",60,"comic",{"id":115,"doc_module":4,"doc_module_name":46,"category_name":116,"show_sort_weight":117,"slug":118},6,"Technology",50,"technology",{"id":120,"doc_module":4,"doc_module_name":46,"category_name":121,"show_sort_weight":122,"slug":123},7,"Healthcare",40,"healthcare",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":125,"slug":126},30,"research-report",{"id":128,"doc_module":4,"doc_module_name":46,"category_name":129,"show_sort_weight":130,"slug":131},9,"Religion & Spirituality",20,"religion-spirituality",{"id":130,"doc_module":4,"doc_module_name":46,"category_name":133,"show_sort_weight":130,"slug":134},"World Cup","world-cup",{"id":136,"doc_module":4,"doc_module_name":46,"category_name":137,"show_sort_weight":136,"slug":138},10,"Lifestyle","lifestyle",{"id":140,"doc_module":4,"doc_module_name":46,"category_name":141,"show_sort_weight":29,"slug":142},19,"General","general"]