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Network Working Group                                        A. McKenzieRequest for Comments: 633                                        BBN-NETNIC: 30240                                                March 18, 1974IMP/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]