HomeDocsIETF standardsRFCRFC 0600 — 0699
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Network Working Group
Request for Comments: 638
NIC: 30538
Alex A. McKenzie
BBN-NET
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]
  1. 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]
  1. USC [1130-1430]
    Second Wednesday
    
        31 CCA  [0830-1130]
    
        11 STANFORD  [1200-1500]
    
        32 XEROX  [1400-1700]
  1. 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
  1. 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]
    
       [ This RFC was put into machine readable form for entry ]
       [ into the online RFC archives by Alex McKenzie with    ]
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