1. Experimenter Feedback Ezra Kissel GEC12 – Kansas City, MO Nov 4 th 2011

2. Experiment Improving WAN performance with the eXtensible Session Protocol (XSP) General interface for network path signaling – OpenFlow, ION, Linux Net, NDDI, etc. Performance-enhancing services “inlay” – Phoebus –SLaBS – Optimize use of dynamic, dedicated resources Sockets-like API for applications (libxsp) – Transparent wrapper library – Standard interfaces at the edge, innovation in the core 211/04/2011GENI Engineering Conference 12

3. XSP and Phoebus Architecture w/ Monitoring System XIO-XSP GridFTP System XIO-XSP GridFTP PG XSPd IDC netPath OPENFLOW OSCARS Network Monitoring / GENI I&M 3

4. Existing 1G Phoebus nodes on Internet2 backbone ProtoGENI backbone node running Phoebus-SLaBS ION circuit pg SALT KANS WASH GridFTP @Utah Emulab PlanetLab- South hosts (if needed) OF @ BBN 1G protogeni tunnel GridFTP @BBN GridFTP @PlanetLab West GridFTP @ PlanetLab- East hosts ION PATH SETUP OF /ION SETUP GEC12 Demo Resources

5. What has worked well ProtoGENI and GCF lists are helpful, as always – Quick response! Tool and resource support is constantly improving (FLACK, Omni) – Using FLACK to drag-and-drop, generate RSpecs – Make changes, create sliver with OMNI Omni makes working with different aggregates/CFs easy – Documentation and on-line examples have improved a lot ION circuits with some external support – Manually adding reservations, VLAN interfaces on WAPG nodes – Will investigate ION AM via Omni examples Experimenters can be driving force behind new features – Ask and you will most likely receive 511/04/2011GENI Engineering Conference 12

6. A few thoughts… Understanding experiment setup over time, trusting results – Need to know state of the substrate, physical changes – Monitoring, notifications of outages, failures, etc. – Knowledge of underlying topology, shared resources Advertisement of substrate connectivity – Beyond nodes – Layer 1, layer 2 connections within each aggregate, backbone OpenFlow Experiments – Easier to specify flowspace with RSpec v3, FOAM – New FOAM opt-in proposal (0.6) sounds promising 611/04/2011GENI Engineering Conference 12

7. Suggestions GENI experimenter issue page/wiki – Bulletin board with aggregate-specific forums? – Search for similar issues, resolution – Companion to the experimenter lists It would be nice to know if a resource is held and OK or just stuck and in a bad state – Can this distinction be made? – Perhaps an optional contact information field accessible via API/tools Continued support for command line tools – Including documentation, current RSpecs examples 711/04/2011GENI Engineering Conference 12