rfc923.txt

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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]



Assigned Numbers                                                 RFC 923
Ethernet Numbers


                      ETHERNET NUMBERS OF INTEREST

   Many of the networks of all classes are Ethernets (10Mb) or
   Experimental Ethernets (3Mb).  These systems use a message "type"
   field in much the same way the ARPANET uses the "link" field.

   If you need an Ethernet number, contact the XEROX Corporation, Office
   Products Division, Network Systems Administration Office, 333 Coyote
   Hill Road, Palo Alto, California, 94304.

   Assignments:

      Ethernet          Exp. Ethernet    Description          References
      -------------     -------------   -----------           ----------
      decimal  Hex      decimal  octal
         512   0200        512   1000   XEROX PUP                [1,HGM]
        1536   0600       1536   3000   XEROX NS IDP           [109,LLG]
        2048   0800        513   1001   DOD IP               [33,77,JBP]
        2049   0801        -      -     X.75 Internet              [LLG]
        2050   0802        -      -     NBS Internet               [LLG]
        2051   0803        -      -     ECMA Internet              [LLG]
        2052   0804        -      -     Chaosnet                   [LLG]
        2053   0805        -      -     X.25 Level 3               [LLG]
        2054   0806        -      -     ARP                    [61,DCP1]
        2076   081C        -      -     Symbolics Private         [DCP1]
       32771   8003        -      -     Cronus VLN            [100,DT15]
       32772   8004        -      -     Cronus Direct         [100,DT15]
       32774   8006        -      -     Nestar                     [LLG]
       32784   8010        -      -     Excelan                    [---]
       32821   8035        -      -     Reverse ARP             [36,JCM]
       36864   9000        -      -     Loopback                   [LLG]

   The standard for transmission of IP datagrams over Ethernets and
   Experimental Ethernets is specified in RFC 894 [48] and RFC 895 [63]
   respectively.















Reynolds & Postel                                              [Page 21]



Assigned Numbers                                                 RFC 923
Address Resolution Protocol


            ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERS

   The Address Resolution Protocol (ARP) specified in RFC 826 [61] has
   several parameters.  The assigned values for these parameters are
   listed here.

   Assignments:

      Operation Code (op)

         1   REQUEST
         2   REPLY

      Hardware Type (hrd)

         Type   Description                                   References
         ----   -----------                                   ----------
           1    Ethernet (10Mb)                                    [JBP]
           2    Experimental Ethernet (3Mb)                        [JBP]
           3    Amateur Radio AX.25                                [PXK]

      Protocol Type (pro)

         Use the same codes as listed in the section called "Ethernet
         Numbers of Interest".

























Reynolds & Postel                                              [Page 22]



Assigned Numbers                                                 RFC 923
Public Data Network Numbers


                  ASSIGNED PUBLIC DATA NETWORK NUMBERS

   One of the Internet Class A Networks is the international system of
   Public Data Networks.  This section lists the mapping between the
   Internet Addresses and the Public Data Network Addresses (X.121).

   Assignments:

      Internet           Public Data Net    Description       References
      ---------------   -----------------   -----------       ----------
      014.000.000.000                       Reserved               [JBP]
      014.000.000.001   3110-317-00035 00   PURDUE-TN              [CAK]
      014.000.000.002   3110-608-00027 00   UWISC-TN               [CAK]
      014.000.000.003   3110-302-00024 00   UDEL-TN                [CAK]
      014.000.000.004   2342-192-00149 23   UCL-VTEST               [PK]
      014.000.000.005   2342-192-00300 23   UCL-TG                  [PK]
      014.000.000.006   2342-192-00300 25   UK-SATNET               [PK]
      014.000.000.007   3110-608-00024 00   UWISC-IBM             [MHS1]
      014.000.000.008   3110-213-00045 00   RAND-TN                [MO2]
      014.000.000.009   2342-192-00300 23   UCL-CS                  [PK]
      014.000.000.010   3110-617-00025 00   BBN-VAN-GW            [JD21]
      014.000.000.011   2405-015-50300 00   CHALMERS               [UXB]
      014.000.000.012   3110-713-00165 00   RICE                  [PAM6]
      014.000.000.013   3110-415-00261 00   DECWRL                [PAM6]
      014.000.000.014   3110-408-00051 00   IBM-SJ                 [SA1]
      014.000.000.015   2041-117-01000 00   SHAPE                  [PG3]
      014.000.000.016   2628-153-90075 00   DFVLR                 [HDC1]
      014.000.000.017   3110-213-00032 00   ISI-VAN-GW            [JD21]
      014.000.000.018-014.255.255.254       Unassigned             [JBP]
      014.255.255.255                       Reserved               [JBP]

   The standard for transmission of IP datagrams over the Public Data
   Network is specified in RFC 877 [52].

















Reynolds & Postel                                              [Page 23]



Assigned Numbers                                                 RFC 923
Telnet Options


                        ASSIGNED TELNET OPTIONS

   The Telnet Protocol has a number of options that may be negotiated.
   These options are listed here.  "Official ARPA-Internet
   Protocols" [89] provides more detailed information.

   Options  Name                                              References
   -------  -----------------------                           ----------
      0     Binary Transmission                                 [82,JBP]
      1     Echo                                                [83,JBP]
      2     Reconnection                                         [5,JBP]
      3     Suppress Go Ahead                                   [86,JBP]
      4     Approx Message Size Negotiation                     [34,JBP]
      5     Status                                              [85,JBP]
      6     Timing Mark                                         [87,JBP]
      7     Remote Controlled Trans and Echo                    [79,JBP]
      8     Output Line Width                                    [3,JBP]
      9     Output Page Size                                     [4,JBP]
     10     Output Carriage-Return Disposition                  [22,JBP]
     11     Output Horizontal Tab Stops                         [26,JBP]
     12     Output Horizontal Tab Disposition                   [25,JBP]
     13     Output Formfeed Disposition                         [23,JBP]
     14     Output Vertical Tabstops                            [28,JBP]
     15     Output Vertical Tab Disposition                     [27,JBP]
     16     Output Linefeed Disposition                         [24,JBP]
     17     Extended ASCII                                     [105,JBP]
     18     Logout                                              [19,MRC]
     19     Byte Macro                                          [29,JBP]
     20     Data Entry Terminal                                 [31,JBP]
     22     SUPDUP                                           [21,20,MRC]
     22     SUPDUP Output                                       [39,MRC]
     23     Send Location                                      [51,EAK1]
     24     Terminal Type                                      [97,MHS1]
     25     End of Record                                       [75,JBP]
    255     Extended-Options-List                               [81,JBP]















Reynolds & Postel                                              [Page 24]



Assigned Numbers                                                 RFC 923
Machine Names


                         OFFICIAL MACHINE NAMES

   These are the Official Machine Names as they appear in the NIC Host
   Table.  Their use is described in RFC 810 [35].

   ALTO
   AMDAHL-V7
   BURROUGHS-B/29
   C/30
   C/70
   CADLINC
   CADR
   CDC-173
   DEC-10
   DEC-1050
   DEC-1080
   DEC-1090
   DEC-1090B
   DEC-1090T
   DEC-2020T
   DEC-2040
   DEC-2040T
   DEC-2050T
   DEC-2060
   DEC-2060T
   DEC-FALCON
   DPS8/70M
   FOONLY-F2
   FOONLY-F3
   FOONLY-F4
   H-316
   H-60/68
   H-68
   H-68/80
   H-89
   HONEYWELL-DPS-8/70M
   IBM-158
   IBM-360/67
   IBM-370/3033
   IBM-4341
   IBM-PC
   IMSAI
   K102
   LSI-11
   LSI-11/23
   M6800
   MAXC
   MLC