Changes between Version 12 and Version 13 of sppReport-1Q09

03/24/09 16:44:08 (14 years ago)
Jon Turner



  • sppReport-1Q09

    v12 v13  
    11= Internet Scale Overlay Hosting Progress Report (1/1/2009-3/31/2009) =
    3 == Project Activities this Quarter ==
     3== 1. Project Activities this Quarter ==
    55=== Upgrading of Software for System Initialization ===
    3939As with any substantial system project, this one has experienced a number of issues as we have gone through the system integration process. Most of these were ultimately traceable back to software bugs that did not become apparent until various system components were put together and exercised in realistic usage scenarios. For example, we have experienced a several issues relating to the Network Address Translation (NAT) module implemented in the Line Card. NAT requires coordinated activities within the Line Card data path, the NAT daemon running on the xScale and the System Resource Manager (SRM), which runs on the CP. This creates opportunities for subtle errors, which only become apparent when the system is being used. We have also experienced issues with the Shelf Manager, which provides low level control of the ATCA chassis that hosts most of the system components (for example, the shelf manager can be used to power-off or reset individual boards). These issues involve conflicting control actions by the Shelf Manager and the board that implements the chassis switch. We have worked with the vendor of the chassis switch (Radisys) to identify the problem and turn-off the software component on the chassis switch that causes the problem, but do not yet have a satisfactory resolution. Issues of this sort consume time and effort, but we are working through them and expect to have most, if not all of them, resolved over the next few months.
    41 == Milestones achieved ==
     41== 2. Milestones achieved ==
    4242None yet.
    44 == Deliverables made ==
     44== 3. Deliverables made ==
    4545None yet.
    47 == Project participants ==
     47== 4. Project participants ==
    4849Jon Turner – PI [[br]]
    4950Patrick Crowley – PI [[br]]
    5657Ritun Patney – graduate student [[br]]
    58 == Publications (individual and organizational) ==
     59== 5. Publications (individual and organizational) ==
    5960None yet.
    61 == Outreach activities ==
     62== 6. Outreach activities ==
    6263None yet.
    64 == Collaborations ==
     65== 7. Collaborations ==
    6566Have begun discussions with OpenFlow group at Stanford on a demonstration of OpenFlow in a slice, enabling wide-area, multi-domain OpenFlow networks.