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DDN MGT Bulletin : 9301          DISA DDN Defense Communications System   
27 Oct 1993                      Published by: DDN Network Info Center
                                      (NIC@NIC.DDN.MIL)  (800) 365-3642


                        DEFENSE  DATA  NETWORK
                         MANAGEMENT  BULLETIN

  The DDN MANAGEMENT BULLETIN is distributed online by the DDN Network
  Information Center under DISA contract as a means of communicating
  official policy, procedures and other information of concern to
  management personnel at DDN facilities.  Back issues may be read
  through the TACNEWS server ("@n" command at the TAC) or may be
  obtained by FTP (or Kermit) from the NIC.DDN.MIL host [192.112.36.5]
  using login="anonymous" and password="guest".  The pathname
  for bulletins is ddn-news/ddn-mgt-bulletin-nn.txt (where "nn" is the
  bulletin number).
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                    DDN Scheduled Service Interruptions

    This bulletin supersedes DDN Management Bulletin 117, dated 10 February
    1993, subject 'MILNET PSN Scheduled Service Interruptions.'

    This DDN Management Bulletin provides information regarding scheduled
    service interruption procedures, effective upon receipt. This DDN
    Management Bulletin also provides guidance on how to submit requests
    for DDN MILNET PSN Scheduled Service Interruption requests for
    approval.

    Recently, DISA/UTDS recieved numerous requests for scheduled downtime
    at DDN MILNET PSN facilities without proper coordination and no end
    user validation. Further, DISA/UTDS recieved many of these requests
    from the Node Site Coordinators through the CONUS Monitoring Center
    (CMMC). The CMMC is not authorized to approve Scheduled Service
    Interruption requests without prior approval from UTDC/UNOC. Requests
    should not be submitted to the CMMC -- except as INFORMATION ONLY.

    Procedures and guidelines for DDN Scheduled Service Interruptions are
    provided in DISA Circular 310-70-1, DCS Systems Control, Operational
    Procedures TCF/PTF/MTC's, August 1992, Chapter 7. This DISA Circular
    applies to military departments (MilDeps) and other DOD or governmental
    agencies/activities responsible for the operation, maintenance and
    management of the DCS (Defense Communications System), which includes
    DDN MILNET PSN equipment and Interswitch Trunks (ISTs).

    All future requests for DDN Backbone Scheduled Service Interruptions
    should be submitted as directed by the DISA circular referenced above.
    As a minimum, Node Site Coordinators must submit the following
    information by message:

            A. PSN Node and Location

            B. Duration of Scheduled Outage

               1. Date(s)
               2. Time period

            C. Statement certifying that users directly connected to
               to the PSN are NOTIFIED and CONCUR with the scheduled
               service interruption.

    If your DDN MILNET PSN site does not have a copy of this DISA circular,
    please check with your local Technical Control Facility (TCF), Patch
    and Test Facility (PTF) or Nodal and Access Switch Monitoring and Test
    Centers (MTCs). They are required to maintain copies of this
    publication, that you may use for guidance on submitting requests for
    scheduled service interruption. You can also order the DISA circular
    through your local Publication Distribution Office (PDO) or Base
    Administration Office. This document can be obtained by submitting DISA
    Form 117, Publication or Blank Form Request to:

            Defense Information Systems Agency
            ATTN: BIAR
            701 S. Courthouse Rd
            Arlington, VA 22204-2199
            Telephone: (703) 692-6972 or DSN 222-6972

    All Node Site Coordinators should either have this DISA circular on
    hand or ensure that it is available from their local Technical Control
    Facility.

    If your organization is unable to comply with DISA Circular 310-70-1,
    Chapter 7, due to EMERGENCY notification of a scheduled service
    interruption, please contact DISA/UTDS immediately for verbal approval
    of the scheduled service interruption at DSN 222-2757 or COMM (703)
    692-2757.  NOTE: The Node Site Coordinator MUST obtain user concurrence
    before submitting an emergency request.

    Please remember emergency requests are permitted on a case-by-case
    basis. This procedure IS NOT to be used for ROUTINE scheduled
    service interruptions.

    FOR CONUS: EMERGENCY scheduled service interruptions can be submitted
    via E-Mail to the following addresses:

    Action: milnetmgr@ddn-conus.ddn.mil
            aopsmgr@ddn-conus.ddn.mil

    Information: dca-mmc@cmsc.ddn.mil

    FOR EUROPE AND PACIFIC: European and Pacific sites should forward
    requests for scheduled service interruptions to the appropriate DOCC
    area element.

    POC is Capt John Lent, DISA/UTDS, DSN 222-2757/COMM (703) 692-2757,
    E-mail address lentj@cc.ims.disa.mil.