rfc1165.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.


RFC 1165                      NTP over OSI                     June 1990


       Protocol (NTP)", RFC 1129, UDEL, October 1989.

   7.  Mills, D., "Measured Performance of the Network Time Protocol in
       the Internet System", RFC 1128, October 1989.

   8.  Rose M., et al, "The ISO Development Environment: User's Manual".

10.  Acknowledgements

       The Authors would like to thank Dave Mills for his valuable
       comments on an earlier version of this document.

Appendix A.  ROS "Header" Format

       -- NTP definitions for ROS specification
       --
       -- Julian Onions, Nottingham University, UK.
       --
       -- Mon Jun  5 10:07:07 1989
       --

       NTP DEFINITIONS ::=

       BEGIN

       update OPERATION
        ARGUMENT Packet
        ::= 0

       query OPERATION
        ARGUMENT NULL
        RESULT ClockInfoList
        ::= 1

       -- Data Structures

       BindArgument ::=
        fullbind SEQUENCE {
                psap[0] IA5String OPTIONAL,
                version[1] BITSTRING {
                        version-0(0),
                        version-1(1),
                        version-2(2)
                } DEFAULT version-2,
                authentication[2] Authentication OPTIONAL,
                mode[3] BindMode
        }




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       Authentication ::= ANY

       BindMode ::= ENUMERATED {
                normal(0),      -- standard NTP
                query(1)        -- queries only
        }

       BindResult ::=
        SEQUENCE {
                version[1] INTEGER DEFAULT 2,
                authentication[2] Authentication OPTIONAL,
                mode[3] BindMode
        }

       BindError ::=
        SEQUENCE {
                reason[0] INTEGER {
                        refused(0),
                        validation(1),
                        version(2),     -- version not supported
                        badarg(3),      -- bad bind argument
                        congested(4)    -- catch all!
                },
                supplementary[1] IA5String OPTIONAL
        }


                                        -- basic exchange packet

       Packet ::= SEQUENCE {
        leap                    Leap,
        mode                    Mode,
        stratum[1]              INTEGER,
        pollInterval[2]         INTEGER,
        precision[3]            INTEGER,
        synchDistance           SmallFixed,
        synchDispersion         SmallFixed,
        referenceClockIdentifier ClockIdentifier,
        referenceTimestamp      TimeStamp,
        originateTimestamp      TimeStamp,
        receiveTimestamp        TimeStamp,
        transmitTimestamp       TimeStamp
       }

       ClockInfoList ::= SET OF ClockInfo

       ClockInfo ::= SEQUENCE {
        remoteAddress           Address,



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        localAddress            Address,
        flags[0]                BIT STRING {
                        configured(0),
                        authentable(1),
                        sane(2),
                        candidate(3),
                        sync(4),
                        broadcast(5),
                        referenceClock(6),
                        selected(7),
                        inactive(8)
        },
        packetsSent[1]          INTEGER,
        packetsReceived[2]      INTEGER,
        packetsDropped[3]       INTEGER,
        timer[4]                INTEGER,
        leap                    Leap,
        stratum[5]              INTEGER,
        ppoll[6]                INTEGER,
        hpoll[7]                INTEGER,
        precision[8]            INTEGER,
        reachability[9]         INTEGER,
        estdisp[10]             INTEGER,
        estdelay[11]            INTEGER,
        estoffset[12]           INTEGER,
        reference[13]           ClockIdentifier OPTIONAL,
        reftime                 TimeStamp,
        filters                 SEQUENCE OF Filter
       }

       Leap ::= [APPLICATION 0] ENUMERATED {
                nowarning(0),
                plussecond(1),
                minussecond(2),
                alarm(3)
        }

       SmallFixed ::= [APPLICATION 1] IMPLICIT SEQUENCE {
                integer INTEGER,
                fraction INTEGER
        }

       ClockIdentifier ::= CHOICE {
                        referenceClock[0] PrintableString,
                        inetaddr[1] OCTET STRING,
                        psapaddr[2] OCTET STRING
        }




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RFC 1165                      NTP over OSI                     June 1990


       TimeStamp ::= [APPLICATION 2] IMPLICIT SEQUENCE {
                integer INTEGER,
                fraction INTEGER
        }

       KeyId ::= [APPLICATION 4] INTEGER

       Mode ::= [APPLICATION 4] ENUMERATED {
                unspecified (0),
                symmetricActive (1),
                symmetricPassive (2),
                client (3),
                server (4),
                broadcast (5),
                reservered (6),
                private (7)
        }

       Filter ::= SEQUENCE {
                offset INTEGER,
                delay INTEGER
        }

       Address ::= OCTET STRING -- for now
       END

11. Security Considerations

   Security issues are not discussed in this memo.

12. Authors' Addresses

   Jon Crowcroft
   Computer Science Department
   University College London
   Gower Street
   London WC1E 6BT UK

   EMail:  [e-mail]


   Julian P. Onions
   Computer Science Department
   Nottingham University
   University Park
   Nottingham, NG7 2RD UK

   EMail:  [e-mail]



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