1 files changed, 115 insertions, 0 deletions
diff --git a/doc/rfc/rfc343.txt b/doc/rfc/rfc343.txt
new file mode 100644
index 0000000..016b0da
--- /dev/null
+++ b/doc/rfc/rfc343.txt
@@ -0,0 +1,115 @@
+
+
+
+
+
+
+Network Working Group                                        A. McKenzie
+Request for Comments: 343                                        BBN-NET
+NIC #10422                                                   19 May 1972
+Category: B.1
+Obsoletes:  RFC #331
+
+
+                     IMP System Change Notification
+
+   As most of you probably know, our attempt to release IMPSYS 2600 on
+   May 15 (as discussed in RFC #331) was unsuccessful.  Briefly, the
+   primary reasons for failure (all operational rather than programming
+   bugs) were:
+
+      1) The network appears to have grown too large for us to
+         successfully coordinate operator intervention at all sites.
+
+      2) An unanticipated aspect of the gradual release of the new
+         system was the "poisoning" of IMP's running the new system by
+         adjacent IMP's running the old system, and vice versa.  Working
+         around this problem made the dissemination of the new system
+         take much longer than anticipated.
+
+   We believe we see solutions to both of these problems and are now
+   ready to schedule the next attempt(s) to release IMPSYS 2600.  We
+   hereby request all sites to cooperate with this effort in the
+   following ways.
+
+I.   All sites with Model 516 IMP's have been contacted by telephone and
+     asked to set the switches on their IMP's as follows:
+
+        HALT INH     - off
+        W.D.T.       - off
+        AUTO RSTRT   - on
+        MEMORY PRTCT - off
+
+        Please be sure that your switches remain set at these positions
+        until further notice.
+
+II.  No site should attempt to use the IMP's "Trace" routine during the
+     day(s) of the attempted system release.
+
+III. Terminal IMP's may be turned off for significant portions of the
+     day(s) of the attempted system release.  Please be patient with any
+     inconvenience which this causes.
+
+
+
+
+
+
+McKenzie                                                        [Page 1]
+
+RFC 343              IMP System Change Notification             May 1972
+
+
+IV.  We hope to accomplish release of IMPSYS 2600 on the next attempt.
+     Nevertheless, we are not omniscient and may again be thwarted by
+     difficulties.  Accordingly, we are scheduling the next attempt for
+     Wednesday, May 31, and subsequently every Tuesday (June 6, 13, 20,
+     ...) until the release is successfully accomplished.  We will
+     arrange the release process so that site operator coverage is not
+     required; nevertheless we hope that the normal site operator
+     coverage is available in case unanticipated problems develop.
+     Release of the new system will begin early in the day
+     (approximately 7 a.m. EDT).  We again suggest that sites do not
+     schedule production work over the network during the release
+     attempt(s).  We will notify each site by phone after the release
+     has been successfully completed.
+
+     Finally, we apologize in advance for any inconvenience caused by
+     the contortions required to release this new system, and thank all
+     of the site operations' staffs who worked with us on May 15 for
+     their cooperation.
+
+     AAM/jm
+
+
+
+
+
+
+
+
+
+
+
+
+          [ This RFC was put into machine readable form for entry ]
+          [ into the online RFC archives by Ronald de Leeuw 1/99  ]
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+McKenzie                                                        [Page 2]
+