rfc923.txt

RFC 相关的技术文档

   to zero.  The low order eight bits are specified here.

   Port Assignments:

      Decimal   Keyword   Description                         References
      -------   -------   -----------                         ----------
      0                   Reserved                                 [JBP]
      1-4                 Unassigned                               [JBP]
      5        RJE        Remote Job Entry                   [13,34,JBP]
      7        ECHO       Echo                                  [67,JBP]
      9        DISCARD    Discard                               [66,JBP]
      11       USERS      Active Users                          [62,JBP]
      13       DAYTIME    Daytime                               [65,JBP]
      15       NETSTAT    Who is up or NETSTAT                     [JBP]
      17       QUOTE      Quote of the Day                      [72,JBP]
      19       CHARGEN    Character Generator                   [64,JBP]
      20       FTP        File Transfer [Default Data]       [33,68,JBP]
      21       FTP        File Transfer [Control]            [33,68,JBP]
      23       TELNET     Telnet                                [84,JBP]
      25       SMTP       Simple Mail Transfer               [33,74,JBP]
      27       NSW-FE     NSW User System FE                    [18,RHT]
      29       MSG-ICP    MSG ICP                               [60,RHT]
      31       MSG-AUTH   MSG Authentication                    [60,RHT]
      33                  Unassigned                               [JBP]
      35                  any printer server                       [JBP]
      37       TIME       Time                                  [80,JBP]
      39       RLP        Resource Location Protocol              [1,MA]
      41       GRAPHICS   Graphics                           [34,98,JBP]
      42       NAMESERVER Host Name Server                   [33,71,JBP]
      43       NICNAME    Who Is                            [33,42,JAKE]
      44       MPM-FLAGS  MPM FLAGS Protocol                       [JBP]
      45       MPM        Message Processing Module [recv]      [70,JBP]
      46       MPM        MPM [default send]                    [76,JBP]
      47       NI-FTP     NI FTP                                [104,SK]


Reynolds & Postel                                              [Page 14]



Assigned Numbers                                                 RFC 923
Port Numbers


      49       LOGIN      Login Host Protocol                     [PHD1]
      51       LA-MAINT   IMP Logical Address Maintenance       [57,AGM]
      53       DOMAIN     Domain Name Server                       [PM1]
      55       ISI-GL     ISI Graphics Language                 [10,RB6]
      57                  any private terminal access              [JBP]
      59                  any private file service                 [JBP]
      61       NI-MAIL    NI MAIL                                 [8,SK]
      63       VIA-FTP    VIA Systems - FTP                        [DXD]
      65                  Unassigned                               [JBP]
      67                  Unassigned                               [JBP]
      69       TFTP       Trivial File Transfer              [33,87,KRS]
      71       NETRJS     Remote Job Service                 [12,34,RTB]
      72       NETRJS     Remote Job Service                 [12,34,RTB]
      73       NETRJS     Remote Job Service                 [12,34,RTB]
      74       NETRJS     Remote Job Service                 [12,34,RTB]
      75                  any private dial out service             [JBP]
      77                  any private RJE service                  [JBP]
      79       FINGER     Finger                             [34,40,KLH]
      81                  HOSTS2 Name Server                      [EAK1]
      83       HOSTS2-NS  MIT ML Device                            [DPR]
      85       MIT-ML-DEV MIT ML Device                            [DPR]
      87       MIT-ML-DEV Any Private Terminal Link                [JBP]
      89       SU-MIT-TG  SU/MIT Telnet Gateway                    [MRC]
      91       MIT-DOV    MIT Dover Spooler                        [EBM]
      93       DCP        Device Control Protocol                 [DT15]
      95       SUPDUP     SUPDUP                                [21,MRC]
      97       SWIFT-RVF  Swift Remote Vitural File Protocol       [MXR]
      99       METAGRAM   Metagram Relay                          [GEOF]
      101      HOSTNAME   NIC Host Name Server              [33,41,JAKE]
      103                 Unassigned                               [JBP]
      105      CSNET-NS   Mailbox Name Nameserver              [96,MHS1]
      107      RTELNET    Remote Telnet Service                 [73,JBP]
      109      POP        Post Office Protocol                [110,JKR1]
      111      SUNRPC     SUN Remote Procedure Call                [DXG]
      113      AUTH       Authentication Service               [99,MCSJ]
      115      SFTP       Simple File Transfer Protocol         [54,MXL]
      116                 Unassigned                               [JBP]
      117      UUCP-PATH  UUCP Path Service                     [32,MAE]
      118-129             Unassigned                               [JBP]
      131                 Unassigned                               [JBP]
      132-223             Reserved                                 [JBP]
      224-241             Unassigned                               [JBP]
      243      SUR-MEAS   Survey Measurement                      [9,AV]
      245      LINK       LINK                                 [14,RDB2]
      247-255             Unassigned                               [JBP]





Reynolds & Postel                                              [Page 15]



Assigned Numbers                                                 RFC 923
Autonomous System Numbers


                   ASSIGNED AUTONOMOUS SYSTEM NUMBERS

   The Exterior Gateway Protocol (EGP) [93,90] specifies that groups of
   gateways may form autonomous systems.  The EGP provides a 16-bit
   field for identifying such systems.  The values of this field are
   registered here.

   Autonomous System Numbers:

      Decimal   Name                                          References
      -------   ----                                          ----------
            0   Reserved                                           [JBP]
            1   The BBN Gateways                                    [MB]
            2   DCN-AS                                            [DLM1]
            3   The MIT Gateways                                   [LM8]
            4   ISI-AS                                            [JKR1]
            5   Symbolics                                          [CH2]
            6   HIS-Multics                                    [BIM,RK1]
            7   UK-MOD                                            [RNM1]
            8   RICE-AS                                            [PGM]
            9   CMU-ROUTER                                          [MA]
            10  CSNET-PDN-AS                                      [RDR4]
            11  HARVARD                                           [SXB1]
            12  NYU-DOMAIN                                         [EF5]
            13  BRL-AS                                            [RBN1]
            14  COLUMBIA-GW                                       [BC14]
            15  NET DYNAMICS EXP                                   [ZSU]
            16  LBL                                                 [WG]
            17  PURDUE-CS                                         [KCS1]
            18  UTEXAS                                            [JSQ1]
            19  CSS-DOMAIN                                         [RR2]
            20  UR                                                [LB16]
            21  RAND                                               [JDG]
            22  NOSC                                              [RLB3]
            23  RIACS-AS                                          [DG28]
            24  AMES-NAS-GW                                       [MF31]
            25  UCB                                               [MK17]
            26  CORNELL                                            [BN9]
            27  UMDNET                                            [JWO1]
            28  DFVLR-SYS                                         [HDC1]
            29  YALE-AS                                           [JG46]
            30  SRI-AICnet                                         [PM4]
            31  CIT-CS                                            [AD22]
            32  STANFORD                                           [PA5]
            33  DEC-WRL-AS                                        [RKJ2]
            34  UDEL-EECIS                                         [NMM]
            35  MICATON                                            [JN2]
      36-65534  Unassigned                                         [JBP]


Reynolds & Postel                                              [Page 16]



Assigned Numbers                                                 RFC 923
Autonomous System Numbers


        65535   Reserved                                           [JBP]

















































Reynolds & Postel                                              [Page 17]



Assigned Numbers                                                 RFC 923
ARPANET Logical Addresses


                   ASSIGNED ARPANET LOGICAL ADDRESSES

   The ARPANET facility for "logical addressing" is described in
   RFC 878 [56].  A portion of the possible logical addresses are
   reserved for standard uses.

   There are 49,152 possible logical host addresses.  Of these, 256 are
   reserved for assignment to well-known functions.  Assignments for
   well-known functions are made by Joyce Reynolds.  Assignments for
   other logical host addresses are made by the NIC.

   Logical Address Assignments:

      Decimal    Description                                  References
      -------    -----------                                  ----------
      0          Reserved                                          [JBP]
      1          The BBN Gateways                                   [MB]
      2-255      Unassigned                                        [JBP]
      256        Reserved                                          [JBP]































Reynolds & Postel                                              [Page 18]



Assigned Numbers                                                 RFC 923
ARPANET Link Numbers


                     ASSIGNED ARPANET LINK NUMBERS

   The word "link" here refers to a field in the original ARPANET
   Host/IMP interface leader.  The link was originally defined as an
   8-bit field.  Later specifications defined this field as the
   "message-id" with a length of 12 bits.  The name link now refers to
   the high order 8 bits of this 12-bit message-id field.  The Host/IMP
   interface is defined in BBN Report 1822 [7].

   The low-order 4 bits of the message-id field are called the sub-link.
   Unless explicitly specified otherwise for a particular protocol,
   there is no sender to receiver significance to the sub-link.  The
   sender may use the sub-link in any way he chooses (it is returned in
   the RFNM by the destination IMP), the receiver should ignore the
   sub-link.

   Link Assignments:

      Decimal   Description                                   References
      -------   -----------                                   ----------
      0         Reserved                                           [JBP]
      1-149     Unassigned                                         [JBP]
      150       Xerox NS IDP                                   [109,LLG]
      151       Unassigned                                         [JBP]
      152       PARC Universal Protocol                         [11,HGM]
      153       TIP Status Reporting                               [JGH]
      154       TIP Accounting                                     [JGH]
      155       Internet Protocol [regular]                  [33,77,JBP]
      156-158   Internet Protocol [experimental]             [33,77,JBP]
      159       Figleaf Link                                      [JBW1]
      160-195   Unassigned                                         [JBP]
      196-247   Experimental Protocols                             [JBP]
      248-255   Network Maintenance                                [JGH]

















Reynolds & Postel                                              [Page 19]



Assigned Numbers                                                 RFC 923
IEEE 802 SAP Numbers


                    IEEE 802 SAP NUMBERS OF INTEREST

   Many of the networks of all classes are IEEE 802 Networks.  These
   systems use a Service Access Point field in much the same way the
   ARPANET uses the "link" field.  For further information and SAP
   number assignments, please contact: Mr. Maris Graube, Chairman, IEEE
   802, c/o Tektronix, P.O. Box 500, D/S 50-473, Beaverton,
   Oregon, 97077.

   Assignments:

      Service Access Point               Description          References
      --------------------               -----------          ----------
      decimal  binary
         96   01100000                   DOD IP              [33,76,JBP]



































Reynolds & Postel                                              [Page 20]