RFC 633

IMP/TIP preventive maintenance schedule

📅 published March 1974, from ietf

RFC 633: IMP/TIP Preventive Maintenance Schedule 🎀

okay bestie, so this is RFC 633 💖 written by A. McKenzie from BBN-NET (NIC 30240), dated March 18, 1974. The header doesn't list a category, and it doesn't say this one obsoletes or updates anything 🧚

The whole point is the monthly Preventive Maintenance (PM) schedule for the IMP/TIP machines ✨ PM happens once a month, and each machine usually gets the same slot every month. They try to line it up with the PM time for the Host(s) at that site, which is so thoughtful 🫶

Rescheduling 🗓️

Sometimes PMs have to move, because of network connectivity or other reasons 🙈 When that happens, they follow the usual process for scheduling downtime with the site's "primary contact" 💅 Permanent schedule changes get announced through the RFC mechanism, so you'll see them here 📜

Downtime Expectations 🌸

PMs usually don't take the IMP/TIP down 🎉 BUT machines do have to go down in some cases, so nobody should count on the machine being up the whole PM window 😭 plan accordingly, bestie 💜

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

The Schedule 🍓

Everything below is in Eastern Time ⭐ Each block is a day slot, with the sites listed and their time windows in brackets.

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]

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]

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]

Fourth Wednesday

    LINCOLN  [0830-1130]

    RUTGERS  [1000-1400]

Fourth Thursday

    GWC  [0930-1230]

    ISI  [1300-1600]

    ABERDEEN  [0830-1130]

Fourth Friday

    LLL  [1330-1730]

Archive Note 📚

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. 🦋

[ 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 ]

that's the whole schedule, bestie 🌈👑

📦 where this page comes from