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+Network Working Group                                            V. Cerf
+Request for Comments: 968                                            MCI
+                                                           December 1985
+
+                    'Twas the Night Before Start-up'
+
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+STATUS OF THIS MEMO
+
+   This memo discusses problems that arise and debugging techniques used
+   in bringing a new network into operation.  Distribution of this memo
+   is unlimited.
+
+DISCUSSION
+
+   Twas the night before start-up and all through the net,
+     not a packet was moving; no bit nor octet.
+   The engineers rattled their cards in despair,
+     hoping a bad chip would blow with a flare.
+   The salesmen were nestled all snug in their beds,
+     while visions of data nets danced in their heads.
+   And I with my datascope tracings and dumps
+     prepared for some pretty bad bruises and lumps.
+   When out in the hall there arose such a clatter,
+     I sprang from my desk to see what was the matter.
+
+   There stood at the threshold with PC in tow,
+     An ARPANET hacker, all ready to go.
+   I could see from the creases that covered his brow,
+     he'd conquer the crisis confronting him now.
+   More rapid than eagles, he checked each alarm
+     and scrutinized each for its potential harm.
+
+   On LAPB, on OSI, X.25!
+     TCP, SNA, V.35!
+
+   His eyes were afire with the strength of his gaze;
+     no bug could hide long; not for hours or days.
+   A wink of his eye and a twitch of his head,
+     soon gave me to know I had little to dread.
+   He spoke not a word, but went straight to his work,
+     fixing a net that had gone plumb berserk;
+   And laying a finger on one suspect line,
+     he entered a patch and the net came up fine!
+
+   The packets flowed neatly and protocols matched;
+     the hosts interfaced and shift-registers latched.
+   He tested the system from Gateway to PAD;
+     not one bit was dropped; no checksum was bad.
+   At last he was finished and wearily sighed
+
+
+
+Cerf                                                            [Page 1]
+
+
+
+RFC 968                                                    December 1985
+Twas the Night Before Start-up
+
+
+     and turned to explain why the system had died.
+   I twisted my fingers and counted to ten;
+     an off-by-one index had done it again...
+
+   Vint Cerf
+   December 1985
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+Cerf                                                            [Page 2]
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