Resource Optimization in Hybrid Core Networks with 100G Links

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This project is funded:

  • DOE Office of Science Advanced Scientific Computing Research (ASCR) Progam Office.

  • Program Manager: Dr. Thomas Ndousse

  • DOE award number: DE-SC0002350


      As link rates increase to 100Gbps, and correspondingly switching capacities increase to tens of Tb/s, the question is whether a new architecture is required for ESnet? The current ESnet4 architecture consists of two separate networks: (i) an IP-routed network, and (ii) a dynamic circuit network called Science Data Network (SDN). Since circuit costs account for more than 50% of the ESnet budget, any solutions that can reduce the amount of bandwidth required will be useful to DOE. Therefore, the goal of this project is to design a new hybrid architecture that can share bandwidth resources more effectively while supporting both IP-routed and dynamic-circuit services. The use of techniques such as traffic engineering, which determines optimal routes to balance loads across all links of the network, and network engineering, a form of dynamic network planning, will be studied. As a starting point, traffic traces from passive measurements such as SNMP link data and Netflow data, as well as active measurements such as OWAMP, pinger, NDT, and BWCTL data, will be obtained from the current ESnet4, and analyzed. Simulations will be run toward designing the new hybrid architecture using ESnet4 data-validated input traffic models. The DOE ANI 100G/s testbed will be used to test software modules implemented to support the hybrid network architecture.


    Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the DOE.