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The very high-speed Backbone Network Service (vBNS) came on line in April 1995 as part of a National Science Foundation (NSF) sponsored project to provide high-speed interconnection between NSF-sponsored supercomputing centers and select access points in the United States.〔(NSF Solicitation 93-52 ) - Network Access Point Manager, Routing Arbiter, Regional Network Providers, and Very High Speed Backbone Network Services Provider for NSFNET and the NREN(SM) Program, May 6, 1993〕 The network was engineered and operated by MCI Telecommunications under a cooperative agreement with the NSF. NSF support〔(''NSF Program Solicitation 01-73: High Performance Network Connections for Science and Engineering Research (HPNC)'' ), Advanced Networking Infrastructure and Research Program, Directorate for Computer and Information Science and Engineering, National Science Foundation, February 16, 2001, 16 pp.〕 was available to organizations that could demonstrate a need for very high speed networking capabilities and wished to connect to the vBNS or later to the Abilene Network, the high speed network operated by the University Corporation for Advanced Internet Development (UCAID, which operates Internet2).〔(E-mail regarding the launch of Internet2's Abillene network ), Merit Joint Technical Staff, 25 February 1999〕 By 1998, the vBNS had grown to connect more than 100 universities and research and engineering institutions via 12 national points of presence with DS-3 (45 Mbit/s), OC-3c (155 Mbit/s), and OC-12c (622 Mbit/s) links on an all OC-12c, a substantial engineering feat for that time. The vBNS installed one of the first ever production OC-48c (2.5 Gbit/s) IP links in February 1999 and went on to upgrade the entire backbone to OC-48c.〔("vBNS: not your father's Internet" ), John Jamison, Randy Nicklas, Greg Miller, Kevin Thompson, Rick Wilder, Laura Cunningham and Chuck Song, ''IEEE Spectrun'', Volume 35 Issue 7 (July 1998), pp. 38-46.〕 In June 1999 MCI WorldCom introduced vBNS+ which allowed attachments to the vBNS network by organizations that were not approved by or receiving support from NSF.〔("MCI WorldCom Introduces Next Generation vBNS+ For All Higher Education And Research Organizations" ), ''Verizon Business News'', June 23, 1999〕 The vBNS pioneered the production deployment of many novel network technologies including Asynchronous Transfer Mode (ATM), IP multicasting, quality of service, and IPv6. After the expiration of the NSF agreement, the vBNS largely transitioned to providing service to the government. Most universities and research centers migrated to the Internet2 educational backbone. In January 2006 MCI and Verizon merged.〔("Verizon and MCI Close Merger, Creating a Stronger Competitor for Advanced Communications Services" ), ''Verizon Business News'', January 6, 2006〕 The vBNS+ is now a service of Verizon Business.〔(vBNS+ ), at www.verizonbusiness.com Home > Solutions > Government > Federal Government > Contract Vehicles > FTS2001 Bridge > Products〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Very high-speed Backbone Network Service」の詳細全文を読む スポンサード リンク
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