 A DYNES instrument must provide two basic capabilities at the Tier 2S, Tier3s and regional networks: 1.

 Major examples are Internet2’s Dynamic Circuit Network (its “ION Service”) and ESnet’s Science Data Network (SDN), each of which provides:  Increased effective bandwidth capacity, and reliability of network access, by mutually isolating the large long-lasting flows (on ION and/or the ESnet SDN) and the traditional IP mix of many small flows  Guaranteed bandwidth as a service by building a system to automatically schedule and implement virtual circuits traversing the network backbone, and  Improved ability of scientists to access network measurement data for all the network segments end-to-end through the perfSONAR monitoring infrastructure.ĭYNES System Description AIM: extend hybrid & dynamic capabilities to campus & regional networks.  ESnet, US LHCNet, NSF/IRNC, other major networks in US & Europe  Network resource allocation and data operations need to be consistent  DYNES will help provide standard services and low cost equipment to help meet the needsĭYNES: Why Dynamic Circuits ?  To meet the requirements, Internet2 and ESnet, along with several US regional networks, US LHCNet, and NRENs and in GEANT in Europe, have developed a strategy (since with a meeting at CERN, March 2004)  Based on a ‘hybrid’ network architecture  Where the traditional IP network backbone is paralleled by a circuit-oriented core network reserved for large-scale science traffic.

 Network usage on this scale can only be accommodated with planning, n appropriate architecture, and national and international community involvement by  The LHC groups at universities and labs  Campuses, regional and state networks connecting to Internet2  LHC data volumes and transfer rates are expected to expand by an order of magnitude over the next several years  As higher capacity storage and regional, national and transoceanic 40G and 100 Gbps network links become available and affordable. > Moore’s Law  Proliferation of 10G links across the Atlantic & Pacific since 2005 Installed Bandwidth for LHC well above 200 Gbps in aggregate  Rapid Spread of “Dark Fiber” and DWDM: Emergence of Continental, Nat’l, State & Metro N X 10G “Hybrid” Networks in Many Nations  Point-to-point “Light-paths” for HEP and “Data Intensive Science” Now Dynamic Circuits Managed Bandwidth Channels  Technology continues to drive Performance Higher, Costs Lower  Commoditization of GE now 10 GE ports on servers 40 GE starting  Cheaper and faster storage ( 10 Gbps) are in production use today by some Tier2s as well as Tier1s ICFA Report 2010 - Main Trends Accelerate: Dark Fiber Nets, Dynamic Circuits, 40-100G  Current generation of 10 Gbps network backbones and major Int’l links arrived in 2002-8 in US, Europe, Japan, Korea Now China, Brazil  Bandwidth Growth: from 16 to >10,000X in 7 Yrs. OUTLINE Global View of Networks from ICFA SCIC Perspective Continental and Transoceanic Network Infrastructures Rise of Dark Fiber Networks DYNES: Dynamic Network SystemĬHEP 2001, Beijing Harvey B Newman California Institute of Technology September 6, 2001 Wide Area Networks for HEP in the LHC Era Harvey B Newman California Institute of Technology CHEP 2010 conference Taipei, October 19th, 2010

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