Network Working Group                                        A. McKenzie
Request for Comments: 633                                        BBN-NET
NIC: 30240                                                March 18, 1974


                 IMP/TIP Preventive Maintenance Schedule

  This note presents the current IMP/TIP Preventive Maintenance
  schedule.  Preventive Maintenance is scheduled on a monthly basis and
  a given machine is normally scheduled at the same time each month;
  wherever possible the time is chosen to coincide with the PM time for
  the Host(s) at the site.

  It is sometimes necessary to reschedule PM's because of network
  connectivity considerations or for other reasons.  Whenever this is
  necessary we will follow the usual procedure for scheduling down time
  with our "primary contact" at the site.  Permanent changes to the
  schedule will he announced via the RFC mechanism.

  PM's normally do not require the IMP/TIP to be taken down.  However,
  machines must be taken down in some cases, so no one should rely on
  the machine remaining available through the PM period.

  PLEASE REMEMBER THAT TUESDAY MORNINGS FROM 7am TO 9am ARE RESERVED
  FOR NETWORK SOFTWARE MAINTENANCE.


  All times shown below are Eastern Time.

   First Monday (of each month)

       BBN IMP  [0830-1130]

       NCC TIP  [1130-1430]

       WRIGHT-PATTERSON  [1300-1700]

   First Tuesday

       BBN TIP  [0830-1130]

       UCSB  [1130-1430]









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RFC 633         IMP/TIP Preventive Maintenance Schedule       March 1974


   First Wednesday

       CARNEGIE  [0830-1130]

       SRI [1130-1430]

   First Thursday

       SDAC  [0830-1130]

       UTAH  [1030-1330]

       NORSAR  [0830-1130]

       LONDON  [0830-1130]

   Second Monday

       MIT-MAC  [0830-1130]

       MIT-IPC  [1200-1500]

       DOCB  [1030-1330]

   Second Tuesday

       MITRE  [0830-1130]

       USC [1130-1430]

   Second Wednesday

       CCA  [0830-1130]

       STANFORD  [1130-1430]

       XEROX  [1500-1800]

       RADC [1430-1730]

   Second Thursday

       BELVOIR  [0830-1130]

       UCSD  [1130-1430]

       RML  [0930-1230]




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RFC 633         IMP/TIP Preventive Maintenance Schedule       March 1974


   Second Friday

       TYMSHARE  [1300-1600]

   Third Monday

       HARVARD  [0830-1130]

       UCLA  [1000-1300]

       KIRTLAND  [1600-1900]

   Third Tuesday

       RAND  [1130-1430]

       SDC  [1530-1830]

   Third Wednesday

       ILLINOIS [0930-1230]

       ARPA  [1800-2100]

       AMES IMP  [1130-1430]

       AMES TIP  [0800-1130]

       HAWAII  [1130-1430]

       MOFFETT  [1500-1600]

   Third Thursday

       ETAC  [0830-1130]

       FNWC  [1130-1430]

   Fourth Monday

       CASE  [0830-1130]

   Fourth Tuesday

       NBS  [0830-1130]

       LBL  [1130-1430]




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RFC 633         IMP/TIP Preventive Maintenance Schedule       March 1974


   Fourth Wednesday

       LINCOLN  [0830-1130]

       RUTGERS  [1000-1400]

   Fourth Thursday

       GWC  [0930-1230]

       ISI  [1300-1600]

       ABERDEEN  [0830-1130]

   Fourth Friday

       LLL  [1330-1730]











      [ This RFC was put into machine readable form for entry ]
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