From 4bfd864f10b68b71482b35c818559068ef8d5797 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Wed, 27 Nov 2024 20:54:24 +0100 Subject: doc: Add RFC documents --- doc/rfc/rfc440.txt | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 doc/rfc/rfc440.txt (limited to 'doc/rfc/rfc440.txt') diff --git a/doc/rfc/rfc440.txt b/doc/rfc/rfc440.txt new file mode 100644 index 0000000..5d11dce --- /dev/null +++ b/doc/rfc/rfc440.txt @@ -0,0 +1,59 @@ + + + + + + +Network Working Group David C. Walden +RFC #440 BBN-NET +NIC #13772 January 1973 +Updates: 381,406 + + + Scheduled Network Software Maintenance + -------------------------------------- + + As explained in RFC 381, we believe that we can minimize +the disruption caused by the release of new IMP software systems by +doing them on a regularly scheduled basis. In the past we have +reserved the one hour period from 7am until 8am every Tuesday morning +for our IMP system scheduled software maintenance period. As the size +of the network has grown to about forty IMPs, we find we can no longer +complete a system release to all IMPs in the one hour scheduled. +Therefore, we are extending our scheduled software maintenance period +to two hours from 7am until 9am eastern time every Tuesday +morning. The extended period will take effect as of the first Tuesday +in February. As we said in RFC 381, we will not always use the +Tuesday morning period, but we always reserve it. On Tuesday mornings +when we _do_ use the scheduled software maintenance period, a type 2 IMP +to Host message* will be sent to all Hosts about an hour in advance of +the period. + + We understand that the software maintenance period cannot +continue to grow linearly with the number of IMPs, and we will find a +way around this problem before software releases start taking 168 +hours a week. + + + +*An IMP-GOING-DOWN-FOR-SCHEDULED-SOFTWARE-MAINTENANCE message. + + + + + + + + [ 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. 9/99 ] + + + + + + + + +Walden [Page 1] + -- cgit v1.2.3