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Unix System Administration Handbook 1997 October
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rfc
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1300s
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rfc1305.tar
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ntpv3c.ps
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1992-04-07
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OCR:
RFC-130 soNetworkmimerProtocolrfVersionr8 Marchr992 A. T 0 i t rm - 0 Thedformatoof theNTP<Messagealatacarea, whichommediatelyoollowschedDP header,discshown indFigureol Followingoscamdescription@fat fields. Leapondicator (LI):o hisosadwo-bitcodeovarningof anompendingdeapo econddoceonser ed/de letedondhedas minute@fah¤talay.cwithit@candbitd , respectively,codedcsdoll ws T 00 - Inowwarning O O 01 lastoninutecas@6 1 o econds 10 lastminutechas(59o econds) 11 alarmæconditionoclockmoto ynchronized) VersionNumberd(VN):o hisdiscohree-bitinteger indicatingtheNTPoversiononumber, curren ly threed3). reserved symmetriccactive symmetricmassive 0 client server broadcast reserveddfor privateaise 16 24 31 LI VN Mode Stratum Poll Precision t RootdDelay(32) Root(Dispersiond32) Referenceddentifier(32) Referencedl'imes amp(64) m Originateól'imestamp(64) ReceivedTimestamp(64) F Trans itorimes amp(64) Authenticatordoptional)(96) igurecl.«NTP MessageHeader Mills Pager50