CRON: Cyber-infrastructure for Reconfigurable Optical Networks PI: Seung-Jong Park, co-PI: Rajgopal Kannan GRA: Cheng Cui, Lin Xue, Mohammed Azad, P. Kondicoppa, and Chase Pierson Computer Science and Center for Computation & Technology What is CRON? Experimental Networking Testbed for 10Gbps High Speed Networks Motivation of CRON Challenges of experimentation over 10Gpbs production networks Scarce and expensive resources Limited access for network researchers Interference to other production level traffic uncontrollable networking environments CRON Infrastructure Goal : Bridging the gap between physical Networks and large scale scientific research Objectives : (1) Developing virtually shared 10Gbps networking and high-end computing resources and (2) Enabling large scale scientific experiments to share CRON without mutual interference Introduction of CRON Research Impact of CRON Next generation networking and computing research Distributed computing for large scale computational sciences(Physics, fluid dynamics, bioinformatics, etc.), Remote visualization Vertical Federation CRON with OnTimeMeasure@OSU Integrating the OnTimeMeasure sliver on CRON experiment slice Real time data diagnosis from CRON experiment slice Experimental Results(Y-shape topology) Aggregated throughput between flows reaching 9Gbps Federation of CRON with GENI Horizontal Federation CRON with ProtoGENI@BBN Emulab-based Component Manager & Slice Authority Receiving user credentials Register a slice at the Clearinghouse@Utah Resource reservation between component managers Creating slivers Exchanging RSpec Internet2 connection between CRON and ProtoGENI@BBN Creating a vlan with ION service of Internet2 (LONI : www.loni.bato.dcn.internet2.edu) Components Hardwares Cisco N5000 switch with 48 X 10Gbps ports High-end servers with 10GE NICs 10Gbps hardware emulators Softwares Emulab-based interface & controller 10Gbps software emulators (optimized Dummynet & Netem) Example Scenario Y-shape Topology 1 virtual router (3X10Gbps NICs) 3 X 10Gbps virtual links (30ms delay) 2 competing flows Softwares OS: Ubunto 64bit & FreeBSD 64bit Measurement S/W : Nuttcp & iPerf TCP variants: TCP Reno,