Minutes of Working Group Meeting

JAC Facility, Hilo

June 21, 2007




  1. Current Network Status
  2. Pui Hin had no network issues to report.

    Mac Cooper got back to us on the intermittent connection problems between SMA and Cambridge. Mac and his colleagues at SMA have determined that the problems have to do with TCP tuning -- or the lack of it -- rather than the physical network. He pointed the group to several articles that describe the issues and remedies for such problems. The URLs are:

    http://lists.samba.org/archive/rsync/2006-August/016076.html http://www.psc.edu/networking/projects/tcptune/ http://e2epi.internet2.edu/ndt/download.html

  3. FY 07/08 budget
  4. Pui Hin presented the proposed FY2007/08 budget with the following comments:

    The increase in the salary portion is due to the Union negotiated pay raises.

    Maintenance has gone down due to the exclusion of ATM switches and routers. The actual maintenance cost will likely be much lower than budgeted.

    The cost of electricity has gone up.

    The budget total for this year is slightly higher than last year but with the fund balance from last year, the per share amount charged to the observatories will be lower than last year.

  5. 10 Gb extension to MK - integration schedule
  6. UH-ITS has installed Cisco switches at CFHT and Hilo on June 5th and June 13th respectively and test traffic is flowing from Mauna Lani to CFHT and on to IfA Hilo. However, TW will be doing maintenance work in the next two weeks and Pui Hin was asked to hold off patching in CFHT until the maintenance work is completed.

    Regarding the upgrade of the observatories' 100Mbps to 1Gbps Ethernet Private Line, UH-ITS is closing in on their negotiations with Hawaiian Telcom. Gemini, JAC, and Keck have already heard from Hawaiian Telcom regarding the establishment of new contracts.

    For the 1Gbps Ethernet Private line, Hawaiian Telcom will provide Singlemode, SC interfaces. For the Cisco 3750 switches, the part number and description of the interface are:

    GLC-LH-SM 1000BASE-LX/LH SPF transceiver module for SMF, 1300-nm wavelength

  7. Gigabit switched network for the MK Summit -- testing and integration schedule
  8. Cisco 3750 switches for the Summit and HP have been installed on April 26th.

    Two timeslots (for 15 minutes and 30 minutes) are needed for the integration of hardware and software -- which includes connecting the new switches to the ATM routers and enabling OSPF routing. Everyone present agreed on June 28th at 10:15am and 2:00pm.

    Apart from having to buy fiber jumpers for the connections in Hilo, both the GE network in Hilo and the network on the Summit are ready for connection from the observatories at gigabit bandwidth. However Pui Hin will be on vacation from July 16th to July 27th, so the earliest the connections will be made will likely be in late July or early August.

  9. Rewiring for the Hilo LAN
  10. Pui Hin is still waiting to hear from Subaru and Gemini on the number of fibers they want to have pulled into their facilities.

  11. Next meeting
  12. Thursday, September 13th, 10:00am, at Joint Astronomy Center, Hilo

    Note: this meeting has been rescheduled for 10:30am.

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Last updated September 12, 2007 by Miranda Hawarden-Ogata