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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]

McKenzie [Page 1]  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]

McKenzie [Page 2]  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]

McKenzie [Page 3]  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 ]
     [ into the online RFC archives by Alex McKenzie with    ]
     [ support from GTE, formerly BBN Corp.           2/2000 ]

McKenzie [Page 4]