Milestone SPP: S3.c Demonstration and outreach at GEC10

Completed 13 years ago (03/17/11 15:41:21)

  • GEC-10 Demonstration. We will demonstrate a new SPP fastpath developed in collaboration with Brighten Godfrey of the University of Illinois. This application involves dynamically re-routing packets around failed links, based on user-specified preferences encoded as a directed acyclic graph in the packet header. Demonstration of UMLPEN capabilities such as NIC based packet filtering and capturing.
  • Flow Statistics Recording for Incident Accountability. We have implemented a flow statistics monitoring mechanism to allow complaints about SPP-generated traffic to be traced back to a specific experiment. This will be integrated and demonstrated on the deployed systems.
  • SPP Tutorial at GEC-10. We will provide a tutorial at GEC-10 for researchers interested in using the SPPs in experimental overlay networks. This will include background material on the system architecture, a detailed description of the user tools available for configuring SPPs, demonstrations of applications using the SPPs and a hands-on session. Tutorial on PEN for GENI experimenters


  • GEC10 demo: We have worked with Brighten Godfrey of the University of Illinois to develop a new NPE fastpath for the SPPs. This implements the Illinois group's Slick Packets protocol, that allows dynamic re-routing around failed links, based on alternate path information encoded in the packet headers. Initial measurements show a substantial improvement over implementations running on a conventional processor, but a detailed performance evaluation is yet to be carried out. The new NPE fastpath was demonstrated at GEC-10. We also carried out a larger scale demonstration of our Forest overlay network. This demonstration used a new end-system emulator that behaves like a simple avatar moving around within a virtual world, while transmitting periodic status updates on region-specific multicast groups. Each emulator dynamically subscribes to multicasts for regions that are visible to it and maintains state for the avatars that are within its visibility range. The demonstration also included a monitor component and a remote graphical display giving a "birds-eye" view of the avatars moving within the virtual world. The demonstration showed 100 avatars distributed among three distinct virtual worlds, each of which used its own comtree. It made use of the full five node SPP testbed and 25 planetlab nodes.
  • Flow monitoring: The flow monitoring system is now complete, but our final testing on the deployed SPPs was interrupted when the Control Processor in the Salt Lake City SPP experienced a hardware failure. We are in the process of having the CP replaced and expect to have the Salt Lake City node back in service before the end of April. At that point, we will complete our testing and deploy the flow monitoring software on the remaining SPP nodes.
  • SPP tutorial: We gave our fourth SPP tutorial at GEC-10. More than 25 people signed up and 18 actually attended. All participants reported having a good experience and almost all of them successfully completed the hands-on exercises.
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