RFC638

Network Working Group Alex A. McKenzie Request for Comments: 638 BBN-NET NIC: 30538 April 25, 1974

            IMP/TIP Preventive Maintenance Schedule

  This RFC corrects numerous inaccuracies in RFC #633.  Rather than
  trying to list all the changes, I urge all Liaisons and other
  interested parties to look carefully at the times now listed for
  the sites they are interested in.

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)

     5 BBN IMP  [0830-1130]

    40 NCC TIP  [1130-1430]

    47 WRIGHT-PATTERSON  [1300-1700]

First Tuesday

    30 BBN TIP  [0830-1130]

     3 UCSB  [1130-1430]

First Wednesday

    14 CARNEGIE  [0830-1130]

     2 SRI [1200-1500]

First Thursday

    26 SDAC  [0830-1130]

     4 UTAH  [1030-1330]

    41 NORSAR  [0830-1130]

    42 LONDON  [0830-1130]

Second Monday

     6 MIT-MAC  [0830-1130]

    44 MIT-IPC  [1200-1500]

    25 DOCB  [1030-1330]

Second Tuesday

    17 MITRE  [0830-1130]

    23 USC [1130-1430]

Second Wednesday

    31 CCA  [0830-1130]

    11 STANFORD  [1200-1500]

    32 XEROX  [1400-1700]

    18 RADC [0900-1200]

Second Thursday

    27 BELVOIR  [0830-1130]

    35 UCSD  [1130-1430]

    37 RML  [0930-1230]

Second Friday

    43 TYMSHARE  [1200-1500]

Third Monday

     9 HARVARD  [0830-1130]

     1 UCLA  [1000-1300]

    48 KIRTLAND  [1600-1900]

Third Tuesday

     7 RAND  [1130-1430]

     8 SDC  [1530-1830]

Third Wednesday

    12 ILLINOIS [0930-1230]

    28 ARPA  [1700-2000]

    15 AMES IMP  [1200-1500]

    16 AMES TIP  [1300-1600]

    36 HAWAII  [1430-1730]

    45 MOFFETT  [1400-1700]

Third Thursday

    20 ETAC  [0830-1130]

    33 FNWC  [1300-1600]

Third Friday

    21 LLL  [1230-1530]

Fourth Monday

    13 CASE  [0830-1130]

Fourth Tuesday

    19 NBS  [0830-1130]

Fourth Wednesday

    10 LINCOLN  [0830-1130]

    46 RUTGERS  [1000-1400]

Fourth Thursday

    24 GWC  [1500-1800]

    22 ISI  [1300-1600]

    29 ABERDEEN  [1300-1600]

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