Network Working Group                                        J. Reynolds
Request for Comments:  1010                                    J. Postel
                                                                     ISI
Obsoletes RFCs: 990, 960, 943, 923, 900, 870,                   May 1987
820, 790, 776, 770, 762, 758,
755, 750, 739, 604, 503, 433, 349
Obsoletes IENs: 127, 117, 93
Page 1

ASSIGNED NUMBERS

Status of this Memo

This memo is an official status report on the numbers used in protocols in the Internet community. Distribution of this memo is unlimited.

Introduction

This Network Working Group Request for Comments documents the currently assigned values from several series of numbers used in network protocol implementations. This RFC will be updated periodically, and in any case current information can be obtained from Joyce Reynolds. If you are developing a protocol or application that will require the use of a link, socket, port, protocol, etc., please contact Joyce to receive a number assignment.

Joyce K. Reynolds
USC - Information Sciences Institute
4676 Admiralty Way
Marina del Rey, California 90292-6695

Phone: (213) 822-1511

Electronic mail: JKREYNOLDS@ISI.EDU

Most of the protocols mentioned here are documented in the RFC series of notes. Some of the items listed are undocumented. Further information on protocols can be found in the memo "Official Internet Protocols" [91]. The more prominent and more generally used are documented in the "DDN Protocol Handbook, Volume Two, DARPA Internet Protocols" [36] prepared by the NIC. Other collections of older or obsolete protocols are contained in the "Internet Protocol Transition Workbook" [57], or in the "ARPANET Protocol Transition Handbook" [38]. For further information on ordering the complete 1985 DDN Protocol Handbook, write: SRI International (SRI-NIC), DDN Network Information Center, Room EJ291, 333 Ravenswood Avenue, Meno Park, CA., 94025; or call: 1-800-235-3155.

In the entries below, the name and mailbox of the responsible individual is indicated. The bracketed entry, e.g., [nn,iii], at the


Page 2

right hand margin of the page indicates a reference for the listed protocol, where the number ("nn") cites the document and the letters ("iii") cites the person. Whenever possible, the letters are a NIC Ident as used in the WhoIs (NICNAME) service.

The convention in the documentation of Internet Protocols is to express numbers in decimal and to picture data in "big-endian" order [14]. That is, fields are described left to right, with the most significant octet on the left and the least significant octet on the right.

The order of transmission of the header and data described in this document is resolved to the octet level. Whenever a diagram shows a group of octets, the order of transmission of those octets is the normal order in which they are read in English. For example, in the following diagram the octets are transmitted in the order they are numbered.

    0                   1                   2                   3   
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |       1       |       2       |       3       |       4       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |       5       |       6       |       7       |       8       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |       9       |      10       |      11       |      12       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Transmission Order of Bytes

Whenever an octet represents a numeric quantity the left most bit in the diagram is the high order or most significant bit. That is, the bit labeled 0 is the most significant bit. For example, the following diagram represents the value 170 (decimal).


0 1 2 3 4 5 6 7

                           +-+-+-+-+-+-+-+-+
                           |1 0 1 0 1 0 1 0|
                           +-+-+-+-+-+-+-+-+

Significance of Bits

Similarly, whenever a multi-octet field represents a numeric quantity the left most bit of the whole field is the most significant bit. When a multi-octet quantity is transmitted the most significant octet is transmitted first.


Page 3

Version Numbers

VERSION NUMBERS

In the Internet Protocol (IP) [36,80] there is a field to identify the version of the internetwork general protocol. This field is 4 bits in size.

Assigned Internet Version Numbers

      Decimal   Keyword    Version                            References
      -------   -------    -------                            ----------
          0                Reserved                                [JBP]
        1-3                Unassigned                              [JBP]
          4       IP       Internet Protocol                    [80,JBP]
          5       ST       ST Datagram Mode                     [41,JWF]
       6-14                Unassigned                              [JBP]
         15                Reserved                                [JBP]


Page 4

Protocol Numbers

PROTOCOL NUMBERS

In the Internet Protocol (IP) [36,80] there is a field, called Protocol, to identify the the next level protocol. This is an 8 bit field.

Assigned Internet Protocol Numbers

      Decimal    Keyword     Protocol                         References
      -------    -------     --------                         ----------
           0                 Reserved                              [JBP]
           1     ICMP        Internet Control Message           [72,JBP]
           2     IGMP        Internet Group Management          [34,JBP]
           3     GGP         Gateway-to-Gateway                  [49,MB]
           4                 Unassigned                            [JBP]
           5     ST          Stream                             [41,JWF]
           6     TCP         Transmission Control               [81,JBP]
           7     UCL         UCL                                    [PK]
           8     EGP         Exterior Gateway Protocol         [92,DLM1]
           9     IGP         any private interior gateway          [JBP]
          10     BBN-RCC-MON BBN RCC Monitoring                    [SGC]
          11     NVP-II      Network Voice Protocol             [15,SC3]
          12     PUP         PUP                               [7,XEROX]
          13     ARGUS       ARGUS                                [RWS4]
          14     EMCON       EMCON                                 [BN7]
          15     XNET        Cross Net Debugger                [47,JFH2]
          16     CHAOS       Chaos                                 [NC3]
          17     UDP         User Datagram                      [79,JBP]
          18     MUX         Multiplexing                       [16,JBP]
          19     DCN-MEAS    DCN Measurement Subsystems           [DLM1]
          20     HMP         Host Monitoring                    [48,RH6]
          21     PRM         Packet Radio Measurement              [ZSU]
          22     XNS-IDP     XEROX NS IDP                    [102,XEROX]
          23     TRUNK-1     Trunk-1                               [SA2]
          24     TRUNK-2     Trunk-2                               [SA2]
          25     LEAF-1      Leaf-1                                [SA2]
          26     LEAF-2      Leaf-2                                [SA2]
          27     RDP         Reliable Data Protocol            [106,RH6]
          28     IRTP        Internet Reliable Transaction      [59,TXM]
          29     ISO-TP4     ISO Transport Protocol Class 4    [51,RC77]
          30     NETBLT      Bulk Data Transfer Protocol       [13,DDC1]
          31     MFE-NSP     MFE Network Services Protocol     [93,BCH2]
          32     MERIT-INP   MERIT Internodal Protocol             [HWB]
          33     SEP         Sequential Exchange Protocol        [JC120]
       34-60                 Unassigned                            [JBP]
          61                 any host internal protocol            [JBP]
          62     CFTP        CFTP                              [42,HCF2]
          63                 any local network                     [JBP]


Page 5

Protocol Numbers

          64     SAT-EXPAK   SATNET and Backroom EXPAK             [SHB]
          65     MIT-SUBNET  MIT Subnet Support                    [NC3]
          66     RVD         MIT Remote Virtual Disk Protocol      [MBG]
          67     IPPC        Internet Pluribus Packet Core         [SHB]
          68                 any distributed file system           [JBP]
          69     SAT-MON     SATNET Monitoring                     [SHB]
          70                 Unassigned                            [JBP]
          71     IPCV        Internet Packet Core Utility          [SHB]
       72-75                 Unassigned                            [JBP]
          76     BR-SAT-MON  Backroom SATNET Monitoring            [SHB]
          77                 Unassigned                            [JBP]
          78     WB-MON      WIDEBAND Monitoring                   [SHB]
          79     WB-EXPAK    WIDEBAND EXPAK                        [SHB]
      80-254                 Unassigned                            [JBP]
         255                 Reserved                              [JBP]


Page 6

Port Numbers

PORT NUMBERS

Ports are used in the TCP [36,81] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port".

To the extent possible, these same port assignments are used with the UDP [37,79].

To the extent possible, these same port assignments are used with the ISO-TP4 [52].

The assigned ports use a small portion of the possible port numbers. The assigned ports have all except the low order eight bits cleared 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                       [9,JBP]
      7        ECHO       Echo                                  [70,JBP]
      9        DISCARD    Discard                               [69,JBP]
      11       USERS      Active Users                          [65,JBP]
      13       DAYTIME    Daytime                               [68,JBP]
      15                  Unassigned                               [JBP]
      17       QUOTE      Quote of the Day                      [75,JBP]
      19       CHARGEN    Character Generator                   [67,JBP]
      20       FTP-DATA   File Transfer [Default Data]          [71,JBP]
      21       FTP        File Transfer [Control]               [71,JBP]
      23       TELNET     Telnet                                [87,JBP]
      25       SMTP       Simple Mail Transfer                  [77,JBP]
      27       NSW-FE     NSW User System FE                    [17,RHT]
      29       MSG-ICP    MSG ICP                               [63,RHT]
      31       MSG-AUTH   MSG Authentication                    [63,RHT]
      33       DSP        Display Support Protocol                 [MLC]
      35                  any private printer server               [JBP]
      37       TIME       Time                                  [83,JBP]
      39       RLP        Resource Location Protocol                [MA]
      41       GRAPHICS   Graphics                              [98,JBP]
      42       NAMESERVER Host Name Server                      [74,JBP]
      43       NICNAME    Who Is                               [46,JAKE]
      44       MPM-FLAGS  MPM FLAGS Protocol                       [JBP]


Page 7

Port Numbers

      45       MPM        Message Processing Module [recv]      [73,JBP]
      46       MPM-SND    MPM [default send]                    [73,JBP]
      47       NI-FTP     NI FTP                               [103,SK8]
      49       LOGIN      Login Host Protocol                     [PHD1]
      51       LA-MAINT   IMP Logical Address Maintenance       [58,AGM]
      53       DOMAIN     Domain Name Server                 [61,70,PM1]
      55       ISI-GL     ISI Graphics Language                  [6,RB9]
      57                  any private terminal access              [JBP]
      59                  any private file service                 [JBP]
      61       NI-MAIL    NI MAIL                                [4,SK8]
      63       VIA-FTP    VIA Systems - FTP                        [DXD]
      65       TACACS-DS  TACACS-Database Service                [3,RHT]
      67       BOOTPS     Bootstrap Protocol Server            [29,WJC2]
      68       BOOTPC     Bootstrap Protocol Client            [29,WJC2]
      69       TFTP       Trivial File Transfer                [95,DDC1]
      71       NETRJS-1   Remote Job Service                    [8,RTB3]
      72       NETRJS-2   Remote Job Service                    [8,RTB3]
      73       NETRJS-3   Remote Job Service                    [8,RTB3]
      74       NETRJS-4   Remote Job Service                    [8,RTB3]
      75                  any private dial out service             [JBP]
      77                  any private RJE service                  [JBP]
      79       FINGER     Finger                                [44,KLH]
      81       HOSTS2-NS  HOSTS2 Name Server                      [EAK1]
      83       MIT-ML-DEV MIT ML Device                            [DPR]
      85       MIT-ML-DEV MIT ML Device                            [DPR]
      87                  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                                [20,MRC]
      97       SWIFT-RVF  Swift Remote Vitural File Protocol       [MXR]
      98       TACNEWS    TAC News                                [FRAN]
      99       METAGRAM   Metagram Relay                          [GEOF]
      101      HOSTNAME   NIC Host Name Server                 [45,JAKE]
      102      ISO-TSAP   ISO-TSAP                              [12,MTR]
      103      X400       X400                                    [HCF2]
      104      X400-SND   X400-SND                                [HCF2]
      105      CSNET-NS   Mailbox Name Nameserver              [96,MAS3]
      107      RTELNET    Remote Telnet Service                 [76,JBP]
      109      POP-2      Post Office Protocol - Version 2     [11,JKR1]
      111      SUNRPC     SUN Remote Procedure Call                [DXG]
      113      AUTH       Authentication Service               [99,MCSJ]
      115      SFTP       Simple File Transfer Protocol        [56,MKL1]
      117      UUCP-PATH  UUCP Path Service                     [35,MAE]
      119      NNTP       Network News Transfer Protocol        [53,PL4]
      121      ERPC       HYDRA Expedited Remote Procedure Call[101,JXO]
      123      NTP        Network Time Protocol                [60,DLM1]
      125      LOCUS-MAP  Locus PC-Interface Net Map Server    [105,BXG]


Page 8

Port Numbers

      127      LOCUS-CON  Locus PC-Interface Conn Server       [105,BXG]
      129      PWDGEN     Password Generator Protocol          [107,FJW]
      130      CISCO-FNA  CISCO FNATIVE                            [WXB]
      131      CISCO-TNA  CISCO TNATIVE                            [WXB]
      132      CISCO-SYS  CISCO SYSMAINT                           [WXB]
      133      STATSRV    Statistics Service                      [DLM1]
      134      INGRES-NET INGRES-NET Service                       [MXB]
      135      LOC-SRV    Location Service                         [JXP]
      136      PROFILE    PROFILE Naming System                    [LLP]
      137      NETBIOS-NS NETBIOS Name Service                     [JBP]
      138      NETBIOS-DGM NETBIOS Datagram Service                [JBP]
      139      NETBIOS-SSN NETBIOS Session Service                 [JBP]
      140      EMFIS-DATA EMFIS Data Service                       [GB7]
      141      EMFIS-CNTL EMFIS Control Service                    [GB7]
      142      BL-IDM     Britton-Lee IDM                         [SXS1]
      143-159             Unassigned                               [JBP]
      160-223             Reserved                                 [JBP]
      224-241             Unassigned                               [JBP]
      243      SUR-MEAS   Survey Measurement                      [5,AV]
      245      LINK       LINK                                 [10,RDB2]
      247-255             Unassigned                               [JBP]


Page 9

Domain System Parameters

DOMAIN SYSTEM PARAMETERS

The Internet Domain Naming System (DOMAIN) includes several parameters. These are documented in RFC 883 [61]. The CLASS parameter is listed here. The per CLASS parameters are defined in separate RFCs as indicated.

Domain System Parameters:

      Decimal   Name                                          References
      -------   ----                                          ----------
            0   Reserved                                           [PM1]
            1   Internet                                        [61,PM1]
            2   Unassigned                                         [PM1]
            3   Chaos                                              [PM1]
      4-65534   Unassigned                                         [PM1]
        65535   Reserved                                           [PM1]


Page 10

ARPANET Logical Addresses

ARPANET LOGICAL ADDRESSES

The ARPANET facility for "logical addressing" is described in RFC 878 [57] and RFC 1005 [109]. 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 Core Gateways                              [MB]
      2-254      Unassigned                                        [JBP]
      255        Reserved                                          [JBP]


Page 11

ARPANET Link Numbers

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 [2].

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                                 [102,XEROX]
      151       Unassigned                                         [JBP]
      152       PARC Universal Protocol                        [7,XEROX]
      153       TIP Status Reporting                               [JGH]
      154       TIP Accounting                                     [JGH]
      155       Internet Protocol [regular]                     [80,JBP]
      156-158   Internet Protocol [experimental]                [80,JBP]
      159       Figleaf Link                                      [JBW1]
      160-194   Unassigned                                         [JBP]
      195       ISO-IP                                          [52,RXM]
      196-247   Experimental Protocols                             [JBP]
      248-255   Network Maintenance                                [JGH]


Page 12

IEEE 802 SAP Numbers

IEEE 802 NUMBERS OF INTEREST

Some of the networks of all classes are IEEE 802 Networks. These systems may use a Link Service Access Point (LSAP) field in much the same way the ARPANET uses the "link" field. Further, there is an extension of the LSAP header called the Sub-Network Access Protocol (SNAP).

The IEEE likes to describe numbers in binary in bit transmission order, which is the opposite of the big-endian order used throughout the Internet protocol documentation.

Assignments:

      Link Service Access Point               Description     References
      --------------------------   -----------                ----------
      IEEE     Internet
      binary   binary    decimal
      00000000 00000000        0   Null LSAP                      [IEEE]

      01000000 00000010        2   Indiv LLC Sublayer Mgt         [IEEE]

      11000000 00000011        3   Group LLC Sublayer Mgt         [IEEE]

      00100000 00000100        4   SNA Path Control               [IEEE]

      01100000 00000110        6   DOD IP                       [79,JBP]

      01110000 00001110       14   PROWAY-LAN                     [IEEE]

      01110010 01001110       78   EIA-RS 511                     [IEEE]

      01110001 10001110      142   PROWAY-LAN                     [IEEE]

      01010101 10101010      170   SNAP                           [IEEE]

      01111111 11111110      254   ISO DIS 8473                 [52,JXJ]

      11111111 11111111      255   Global DSAP                    [IEEE]

These numbers (and others) are assigned by the IEEE Standards Office. The address is: IEEE Standards Office, 345 East 47th Street, New York, N.Y. 10017, Attn: Vince Condello. Phone: (212) 705-7092.

At an ad hoc special session on "IEEE 802 Networks and ARP", held during the TCP Vendors Workshop (August 1986), an approach to a consistent way to send DoD-IP datagrams and other IP related protocols on 802 networks was developed.


Page 13

IEEE 802 SAP Numbers

Due to some evolution of the IEEE 802.2 standards and the need to provide for a standard way to do additional DoD-IP related protocols (such as the Address Resolution Protocol (ARP) on IEEE 802 network, the following new policy is established, which will replace the old policy (see RFC 960 and RFC 948 [108]).

The new policy is for the Internet community to use the IEEE 802.2 encapsulation on 802.3, 802.4, and 802.5 networks by using the SNAP with an organization code indicating that the following 16 bits specify the EtherType code (where IP = 2048 (0800 hex), see Ethernet Numbers of Interest).

Header

...--------+--------+--------+

    MAC Header|      Length     |                        802.{3/4/5} MAC
   ...--------+--------+--------+

   +--------+--------+--------+
   | Dsap=K1| Ssap=K1| control|                                802.2 SAP
   +--------+--------+--------+

   +--------+--------+---------+--------+--------+
   |protocol id or org code =K2|    Ether Type   |            802.2 SNAP
   +--------+--------+---------+--------+--------+

The total length of the SAP Header and the SNAP header is 8-octets, making the 802.2 protocol overhead come out on a nice boundary.

K1 is 170. The IEEE likes to talk about things in little-endian bit transmission order and specifies this value as 01010101. In big-endian order, as used in Internet specifications, this becomes 10101010 binary, or AA hex, or 170 decimal.

K2 is 0 (zero).

The use of the IP LSAP (K1 = 6) is to be phased out as quickly as possible.


Page 14

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 type, contact the XEROX Corporation, 2300 Geng Road, Palo Alto, California 94303, ATTN: Ms. Pam Cance.

Assignments:

      Ethernet          Exp. Ethernet    Description          References
      -------------     -------------   -----------           ----------
      decimal  Hex      decimal  octal
         512   0200        512   1000   XEROX PUP              [7,XEROX]
         513   0201        -      -     PUP Addr. Trans.         [XEROX]
        1536   0600       1536   3000   XEROX NS IDP         [102,XEROX]
        2048   0800        513   1001   DOD IP                  [80,JBP]
        2049   0801        -      -     X.75 Internet            [XEROX]
        2050   0802        -      -     NBS Internet             [XEROX]
        2051   0803        -      -     ECMA Internet            [XEROX]
        2052   0804        -      -     Chaosnet                 [XEROX]
        2053   0805        -      -     X.25 Level 3             [XEROX]
        2054   0806        -      -     ARP                     [64,JBP]
        2055   0807        -      -     XNS Compatability        [XEROX]
        2076   081C        -      -     Symbolics Private         [DCP1]
        4096   1000        -      -     Berkeley Trailer         [XEROX]
        5632   1600        -      -     Valid                    [XEROX]
       21000   5208        -      -     BBN Simnet               [XEROX]
       24577   6001        -      -     DEC MOP Dump/Load        [XEROX]
       24578   6002        -      -     DEC MOP Remote Console   [XEROX]
       24579   6003        -      -     DEC DECNET Phase IV      [XEROX]
       24580   6004        -      -     DEC LAT                  [XEROX]
       24581   6005        -      -     DEC                      [XEROX]
       24582   6006        -      -     DEC                      [XEROX]
       32771   8003        -      -     Cronus VLN            [100,DT15]
       32772   8004        -      -     Cronus Direct         [100,DT15]
       32773   8005        -      -     HP Probe                 [XEROX]
       32774   8006        -      -     Nestar                   [XEROX]
       32784   8010        -      -     Excelan                  [XEROX]
       32821   8035        -      -     Reverse ARP             [40,JXM]
       32824   8038        -      -     DEC LANBridge            [XEROX]
       32859   805B        -      -     Stanford V Kernel experimental 
      [XEROX]
       32860   805C        -      -     Stanford V Kernel production 
      [XEROX]
       32892   807C        -      -     Merit Internodal           [HWB]
       32923   809B        -      -     Appletalk                [XEROX]


Page 15

Ethernet Numbers

       36864   9000        -      -     Loopback                 [XEROX]

The standard for transmission of IP datagrams over Ethernets and Experimental Ethernets is specified in RFC 894 [50] and RFC 895 [66] respectively.

NOTE: Ethernet 48-bit address blocks are now assigned by the IEEE.

IEEE Standards Office, 345 East 47th Street, New York, N.Y. 10017, Attn: Vince Condello. Phone: (212) 705-7092.


Page 16

Address Resolution Protocol

ADDRESS RESOLUTION PROTOCOL PARAMETERS

The Address Resolution Protocol (ARP) specified in RFC 826 [64] 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]
           4    Proteon ProNET Token Ring                          [JBP]
           5    Chaos                                              [GXP]
           6    IEEE 802 Networks                                  [JBP]
           7    ARCNET                                             [JBP]

Protocol Type (pro)

Use the same codes as listed in the section called "Ethernet Numbers of Interest" (all hardware types use this code set for the protocol type).


Page 17

Public Data Network Numbers

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).

The numbers below are assigned for networks that are connected to the Internet, and for independent networks. These independent networks are marked with an asterisk preceding the number.

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            [MAS3]
       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                 [JFW]
       014.000.000.016   2628-153-90075 00   DFVLR4-X25            [GB7]
       014.000.000.017   3110-213-00032 00   ISI-VAN-GW           [JD21]
       014.000.000.018   2624-522-80900 52   DFVLR5-X25            [GB7]
       014.000.000.019   2041-170-10000 00   SHAPE-X25             [JFW]
       014.000.000.020   5052-737-20000 50   UQNET                 [AXH]
       014.000.000.021   3020-801-00057 50   DMC-CRC1             [JR17]
       014.000.000.022   2624-522-80902 77   DFVLRVAX-X25          [GB7]
      *014.000.000.023   2624-589-00908 01   ECRC-X25              [PXD]
       014.000.000.024   2342-905-24242 83   UK-MOD-RSRE          [JXE2]
       014.000.000.025   2342-905-24242 82   UK-VAN-RSRE           [AXM]
       014.000.000.026-014.255.255.254       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 [55].


Page 18

Telnet Options

TELNET OPTIONS

The Telnet Protocol has a number of options that may be negotiated. These options are listed here. "Official Internet Protocols" [91] provides more detailed information.

   Options  Name                                              References
   -------  -----------------------                           ----------
      0     Binary Transmission                                 [85,JBP]
      1     Echo                                                [86,JBP]
      2     Reconnection                                        [33,JBP]
      3     Suppress Go Ahead                                   [89,JBP]
      4     Approx Message Size Negotiation                    [102,JBP]
      5     Status                                              [88,JBP]
      6     Timing Mark                                         [90,JBP]
      7     Remote Controlled Trans and Echo                    [82,JBP]
      8     Output Line Width                                   [31,JBP]
      9     Output Page Size                                    [32,JBP]
     10     Output Carriage-Return Disposition                  [21,JBP]
     11     Output Horizontal Tab Stops                         [25,JBP]
     12     Output Horizontal Tab Disposition                   [24,JBP]
     13     Output Formfeed Disposition                         [22,JBP]
     14     Output Vertical Tabstops                            [27,JBP]
     15     Output Vertical Tab Disposition                     [26,JBP]
     16     Output Linefeed Disposition                         [23,JBP]
     17     Extended ASCII                                     [104,JBP]
     18     Logout                                              [18,MRC]
     19     Byte Macro                                          [28,JBP]
     20     Data Entry Terminal                                 [30,JBP]
     22     SUPDUP                                           [19,20,MRC]
     22     SUPDUP Output                                       [43,MRC]
     23     Send Location                                      [54,EAK1]
     24     Terminal Type                                      [97,MAS3]
     25     End of Record                                       [78,JBP]
     26     TACACS User Identification                           [1,BA4]
     27     Output Marking                                      [94,SXS]
     28     Terminal Location Number                            [62,RN6]
    255     Extended-Options-List                               [84,JBP]


Page 19

Machine Names

MACHINE NAMES

These are the Official Machine Names as they appear in the NIC Host Table. Their use is described in RFC 810 [39].

A machine name or CPU type may be up to 40 characters taken from the set of uppercase letters, digits, and the two punctuation characters hyphen and slash. It must start with a letter, and end with a letter or digit.

ALTO
AMDAHL-V7
APOLLO
ATT-3B20
BBN-C/60
BURROUGHS-B/29
BURROUGHS-B/4800
BUTTERFLY
C/30
C/70
CADLINC
CADR
CDC-170
CDC-170/750
CDC-173
CELERITY-1200
COMTEN-3690
CP8040
CRAY-1
CRAY-X/MP
CRAY-2
CTIWS-117
DANDELION
DEC-10
DEC-1050
DEC-1077
DEC-1080
DEC-1090
DEC-1090B
DEC-1090T
DEC-2020T
DEC-2040
DEC-2040T
DEC-2050T
DEC-2060
DEC-2060T
DEC-2065
DEC-FALCON


Page 20

Machine Names

DEC-KS10
DORADO
DPS8/70M
ELXSI-6400
FOONLY-F2
FOONLY-F3
FOONLY-F4
GOULD
GOULD-6050
GOULD-6080
GOULD-9050
GOULD-9080
H-316
H-60/68
H-68
H-68/80
H-89
HONEYWELL-DPS-6
HONEYWELL-DPS-8/70
HP3000
HP3000/64
IBM-158
IBM-360/67
IBM-370/3033
IBM-3081
IBM-3084QX
IBM-3101
IBM-4331
IBM-4341
IBM-4361
IBM-4381
IBM-4956
IBM-PC
IBM-PC/AT
IBM-PC/XT
IBM-SERIES/1
IMAGEN
IMAGEN-8/300
IMSAI
INTEGRATED-SOLUTIONS
INTEGRATED-SOLUTIONS-68K
INTEGRATED-SOLUTIONS-CREATOR
INTEGRATED-SOLUTIONS-CREATOR-8
INTEL-IPSC
IS-1
IS-68010
LMI
LSI-11


Page 21

Machine Names

LSI-11/2
LSI-11/23
LSI-11/73
M68000
MASSCOMP
MC500
MC68000
MICROVAX
MICROVAX-I
MV/8000
NAS3-5
NCR-COMTEN-3690
NOW
ONYX-Z8000
PDP-11
PDP-11/3
PDP-11/23
PDP-11/24
PDP-11/34
PDP-11/40
PDP-11/44
PDP-11/45
PDP-11/50
PDP-11/70
PDP-11/73
PE-7/32
PE-3205
PERQ
PLEXUS-P/60
PLI
PLURIBUS
PRIME-2350
PRIME-2450
PRIME-2755
PRIME-9655
PRIME-9755
PRIME-9955II
PRIME-2250
PRIME-2655
PRIME-9955
PRIME-9950
PRIME-9650
PRIME-9750
PRIME-2250
PRIME-750
PRIME-850
PRIME-550II
PYRAMID-90


Page 22

Machine Names

PYRAMID-90MX
PYRAMID-90X
RIDGE
RIDGE-32
RIDGE-32C
ROLM-1666
S1-MKIIA
SMI
SEQUENT-BALANCE-8000
SIEMENS
SILICON-GRAPHICS
SILICON-GRAPHICS-IRIS
SPERRY-DCP/10
SUN
SUN-2
SUN-2/50
SUN-2/100
SUN-2/120
SUN-2/140
SUN-2/150
SUN-2/160
SUN-2/170
SUN-3/160
SUN-3/50
SUN-3/75
SUN-3/110
SUN-50
SUN-100
SUN-120
SUN-130
SUN-150
SUN-170
SUN-68000
SYMBOLICS-3600
SYMBOLICS-3670
TANDEM-TXP
TEK-6130
TI-EXPLORER
TP-4000
TRS-80
UNIVAC-1100
UNIVAC-1100/60
UNIVAC-1100/62
UNIVAC-1100/63
UNIVAC-1100/64
UNIVAC-1100/70
UNIVAC-1160
VAX-11/725


Page 23

Machine Names

VAX-11/730
VAX-11/750
VAX-11/780
VAX-11/785
VAX-11/790
VAX-11/8600
VAX-8600
WANG-PC002
WANG-VS100
WANG-VS400
XEROX-1108
XEROX-8010


Page 24

System Names

SYSTEM NAMES

These are the Official System Names as they appear in the NIC Host Table. Their use is described in RFC 810 [39].

A system name may be up to 40 characters taken from the set of uppercase letters, digits, and the two punctuation characters hyphen and slash. It must start with a letter, and end with a letter or digit.

AEGIS
APOLLO
BS-2000
CEDAR
CGW
CHRYSALIS
CMOS
CMS
COS
CPIX
CTOS
CTSS
DCN
DDNOS
DOMAIN
EDX
ELF
EMBOS
EMMOS
EPOS
FOONEX
FUZZ
GCOS
GPOS
HDOS
IMAGEN
INTERCOM
IMPRESS
INTERLISP
IOS
ITS
LISP
LISPM
LOCUS
MINOS
MOS
MPE5
MSDOS


Page 25

System Names

MULTICS
MVS
MVS/SP
NEXUS
NMS
NONSTOP
NOS-2
OS/DDP
OS4
OS86
OSX
PCDOS
PERQ/OS
PLI
PSDOS/MIT
PRIMOS
RMX/RDOS
ROS
RSX11M
SATOPS
SCS
SIMP
SWIFT
TAC
TANDEM
TENEX
TOPS10
TOPS20
TP3010
TRSDOS
ULTRIX
UNIX
UT2D
V
VM
VM/370
VM/CMS
VM/SP
VMS
VMS/EUNICE
VRTX
WAITS
WANG
XDE
XENIX


Page 26

Protocol Names

PROTOCOL AND SERVICE NAMES

These are the Official Protocol Names. Their use is described in greater detail in RFC 810 [39].

A protocol or service may be up to 40 characters taken from the set of uppercase letters, digits, and the punctuation character hyphen. It must start with a letter, and end with a letter or digit.

   ARGUS               - ARGUS Protocol
   AUTH                - Authentication Service
   BBN-RCC-MON         - BBN RCC Monitoring
   BL-IDM              - Britton Lee Intelligent Database Machine
   BOOTPC              - Bootstrap Protocol Client
   BOOTPS              - Bootstrap Protocol Server
   BR-SAT-MON          - Backroom SATNET Monitoring
   CFTP                - CFTP
   CHAOS               - CHAOS Protocol
   CHARGEN             - Character Generator Protocol
   CISCO-FNA           - CISCO FNATIVE
   CISCO-TNA           - CISCO TNATIVE
   CISCO-SYS           - CISCO SYSMAINT
   CLOCK               - DCNET Time Server Protocol
   COOKIE-JAR          - Cookie Jar Authentication Procedure
   CSNET-NS            - CSNET Mailbox Nameserver Protocol
   DAYTIME             - Daytime Protocol
   DCN-MEAS            - DCN Measurement Subsystems Protocol
   DCP                 - Device Control Protocol
   DISCARD             - Discard Protocol
   DOMAIN              - Domain Name Server
   ECHO                - Echo Protocol
   EGP                 - Exterior Gateway Protocol
   EMCON               - Emission Control Protocol
   EMFIS-CNTL          - EMFIS Control Service
   EMFIS-DATA          - EMFIS Data Service
   FINGER              - Finger Protocol
   FTP                 - File Transfer Protocol
   FTP-DATA            - File Transfer Protocol Data
   GGP                 - Gateway Gateway Protocol
   GRAPHICS            - Graphics Protocol
   HMP                 - Host Monitoring Protocol
   HOST2-NS            - Host2 Name Server
   HOSTNAME            - Hostname Protocol
   ICMP                - Internet Control Message Protocol
   IGMP                - Internet Group Management Protocol
   IGP                 - Interior Gateway Protocol
   INGRES-NET          - INGRES-NET Service
   IP                  - Internet Protocol


Page 27

Protocol Names

   IPCU                - Internet Packet Core Utility
   IPPC                - Internet Pluribus Packet Core
   IRTP                - Internet Reliable Transaction Protocol
   ISI-GL              - ISI Graphics Language Protocol
   ISO-TP4             - ISO Transport Protocol Class 4
   ISO-TSAP            - ISO TSAP
   LA-MAINT            - IMP Logical Address Maintenance
   LEAF-1              - Leaf-1 Protocol
   LEAF-2              - Leaf-2 Protocol
   LINK                - Link Protocol
   LOC-SRV             - Location Service
   LOGIN               - Login Host Protocol
   MERIT-INP           - MERIT Internodal Protocol
   METAGRAM            - Metagram Relay
   MIT-ML-DEV          - MIT ML Device
   MFE-NSP             - MFE Network Services Protocol
   MIT-SUBNET          - MIT Subnet Support
   MIT-DOV             - MIT Dover Spooler
   MPM                 - Internet Message Protocol (Multimedia Mail)
   MPM-FLAGS           - MPM Flags Protocol
   MPM-SND             - MPM Send Protocol
   MSG-AUTH            - MSG Authentication Protocol
   MSG-ICP             - MSG ICP Protocol
   MUX                 - Multiplexing Protocol
   NAMESERVER          - Host Name Server
   NETBIOS-DGM         - NETBIOS Datagram Service
   NETBIOS-NS          - NETBIOS Name Service
   NETBIOS-SSN         - NETBIOS Session Service
   NETBLT              - Bulk Data Transfer Protocol
   NETED               - Network Standard Text Editor
   NETRJS              - Remote Job Service
   NI-FTP              - NI File Transfer Protocol
   NI-MAIL             - NI Mail Protocol
   NICNAME             - Who Is Protocol
   NSW-FE              - NSW User System Front End
   NTP                 - Network Time Protocol
   NVP-II              - Network Voice Protocol
   POP2                - Post Office Protocol - Version 2
   PRM                 - Packet Radio Measurement
   PUP                 - PUP Protocol
   PWDGEN              - Password Generator Protocol
   QUOTE               - Quote of the Day Protocol
   RDP                 - Reliable Data Protocol
   RJE                 - Remote Job Entry
   RLP                 - Resource Location Protocol
   RTELNET             - Remote Telnet Service
   RVD                 - Remote Virtual Disk Protocol
   SAT-EXPAK           - Satnet and Backroom EXPAK


Page 28

Protocol Names

   SAT-MON             - SATNET Monitoring
   SEP                 - Sequential Exchange Protocol
   SFTP                - Simple File Transfer Protocol
   SMTP                - Simple Mail Transfer Protocol
   ST                  - Stream Protocol
   STATSRV             - Statistics Service
   SU-MIT-TG           - SU/MIT Telnet Gateway Protocol
   SUNRPC              - SUN Remote Procedure Call
   SUPDUP              - SUPDUP Protocol
   SUR-MEAS            - Survey Measurement
   SWIFT-RVF           - Remote Virtual File Protocol
   TACACS-DS           - TACACS-Database Service
   TACNEWS             - TAC News
   TCP                 - Transmission Control Protocol
   TELNET              - Telnet Protocol
   TFTP                - Trivial File Transfer Protocol
   TIME                - Time Server Protocol
   TRUNK-1             - Trunk-1 Protocol
   TRUNK-2             - Trunk-2 Protocol
   UCL                 - University College London Protocol
   UDP                 - User Datagram Protocol
   NNTP                - Network News Transfer Protocol
   USERS               - Active Users Protocol
   UUCP-PATH           - UUCP Path Service
   VIA-FTP             - VIA Systems-File Transfer Protocol
   WB-EXPAK            - Wideband EXPAK
   WB-MON              - Wideband Monitoring
   XNET                - Cross Net Debugger
   XNS-IDP             - Xerox NS IDP


Page 29

Terminal Type Names

TERMINAL TYPE NAMES

These are the Official Terminal Type Names. Their use is described in RFC 930 [97]. The maximum length of a name is 40 characters.

A terminal names may be up to 40 characters taken from the set of uppercase letters, digits, and the two punctuation characters hyphen and slash. It must start with a letter, and end with a letter or digit.

ADDS-CONSUL-980
ADDS-REGENT-100
ADDS-REGENT-20
ADDS-REGENT-200
ADDS-REGENT-25
ADDS-REGENT-40
ADDS-REGENT-60
AMPEX-DIALOGUE-80
ANDERSON-JACOBSON-630
ANDERSON-JACOBSON-832
ANDERSON-JACOBSON-841
ANN-ARBOR-AMBASSADOR
ARDS
BITGRAPH
BUSSIPLEXER
CALCOMP-565
CDC-456
CDI-1030
CDI-1203
CLNZ
COMPUCOLOR-II
CONCEPT-100
CONCEPT-104
CONCEPT-108
DATA-100
DATA-GENERAL-6053
DATAGRAPHIX-132A
DATAMEDIA-1520
DATAMEDIA-1521
DATAMEDIA-2500
DATAMEDIA-3025
DATAMEDIA-3025A
DATAMEDIA-3045
DATAMEDIA-3045A
DATAMEDIA-DT80/1
DATAPOINT-2200
DATAPOINT-3000
DATAPOINT-3300


Page 30

Terminal Type Names

DATAPOINT-3360
DEC-DECWRITER-I
DEC-DECWRITER-II
DEC-GT40
DEC-GT40A
DEC-GT42
DEC-LA120
DEC-LA30
DEC-LA36
DEC-LA38
DEC-VT05
DEC-VT100
DEC-VT132
DEC-VT50
DEC-VT50H
DEC-VT52
DELTA-DATA-5000
DELTA-TELTERM-2
DIABLO-1620
DIABLO-1640
DIGILOG-333
DTC-300S
EDT-1200
EXECUPORT-4000
EXECUPORT-4080
GENERAL-TERMINAL-100A
GSI
HAZELTINE-1500
HAZELTINE-1510
HAZELTINE-1520
HAZELTINE-2000
HP-2621
HP-2621A
HP-2621P
HP-2626
HP-2626A
HP-2626P
HP-2640
HP-2640A
HP-2640B
HP-2645
HP-2645A
HP-2648
HP-2648A
HP-2649
HP-2649A
IBM-3101
IBM-3101-10


Page 31

Terminal Type Names

IBM-3275-2
IBM-3276-2
IBM-3276-3
IBM-3276-4
IBM-3277-2
IBM-3278-2
IBM-3278-3
IBM-3278-4
IBM-3278-5
IBM-3279-2
IBM-3279-3
IMLAC
INFOTON-100
INFOTONKAS
ISC-8001
LSI-ADM-3
LSI-ADM-31
LSI-ADM-3A
LSI-ADM-42
MEMOREX-1240
MICROBEE
MICROTERM-ACT-IV
MICROTERM-ACT-V
MICROTERM-MIME-1
MICROTERM-MIME-2
NETRONICS
NETWORK-VIRTUAL-TERMINAL
OMRON-8025AG
PERKIN-ELMER-1100
PERKIN-ELMER-1200
PERQ
PLASMA-PANEL
QUME-SPRINT-5
SOROC
SOROC-120
SOUTHWEST-TECHNICAL-PRODUCTS-CT82
SUPERBEE
SUPERBEE-III-M
TEC
TEKTRONIX-4010
TEKTRONIX-4012
TEKTRONIX-4013
TEKTRONIX-4014
TEKTRONIX-4023
TEKTRONIX-4024
TEKTRONIX-4025
TEKTRONIX-4027
TELERAY-1061


Page 32

Terminal Type Names

TELERAY-3700
TELERAY-3800
TELETEC-DATASCREEN
TELETERM-1030
TELETYPE-33
TELETYPE-35
TELETYPE-37
TELETYPE-38
TELETYPE-43
TELEVIDEO-912
TELEVIDEO-920
TELEVIDEO-920B
TELEVIDEO-920C
TELEVIDEO-950
TERMINET-1200
TERMINET-300
TI-700
TI-733
TI-735
TI-743
TI-745
TYCOM
UNIVAC-DCT-500
VIDEO-SYSTEMS-1200
VIDEO-SYSTEMS-5000
VISUAL-200
XEROX-1720
ZENITH-H19
ZENTEC-30


Page 33

Documents

DOCUMENTS

   [1]    Anderson, B., "TACACS User Identification Telnet Option",
          RFC 927, BBN, December 1984.

   [2]    BBN, "Specifications for the Interconnection of a Host and an
          IMP", Report 1822, Bolt Beranek and Newman, Cambridge,
          Massachusetts, revised, December 1981.

   [3]    BBN, "User Manual for TAC User Database Tool", Bolt Beranek
          and Newman, September 1984.

   [4]    Bennett, C., "A Simple NIFTP-Based Mail System", IEN 169,
          University College, London, January 1981.

   [5]    Bhushan, A., "A Report on the Survey Project", RFC 530,
          NIC 17375, June 1973.

   [6]    Bisbey, R., D. Hollingworth, and B. Britt, "Graphics Language
          (version 2.1)", ISI/TM-80-18, Information Sciences Institute,
          July 1980.

   [7]    Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An
          Internetwork Architecture", XEROX Palo Alto Research Center,
          CSL-79-10, July 1979; also in IEEE Transactions on
          Communication, Volume COM-28, Number 4, April 1980.

   [8]    Braden, R., "NETRJS Protocol", RFC 740, NIC 42423,
          November 1977.

   [9]    Bressler, B., "Remote Job Entry Protocol",  RFC 407,
          NIC 12112, October 1972.

   [10]   Bressler, R., "Inter-Entity Communication -- An Experiment",
          RFC 441, NIC 13773, January 1973.

   [11]   Butler, M., J. Postel, D. Chase, J. Goldberger, and
          J. K. Reynolds, "Post Office Protocol - Version 2", RFC 937,
          Information Sciences Institute, February 1985.

   [12]   Cass, D. E., and M. T. Rose, "ISO Transport Services on Top of
          the TCP", RFC 983, NTRC, April 1986.

   [13]   Clark, D., M. Lambert, and L. Zhang, "NETBLT: A Bulk Data
          Transfer Protocol", RFC 969, MIT Laboratory for Computer
          Science, December 1985.


Page 34

Documents

   [14]   Cohen, D., "On Holy Wars and a Plea for Peace", IEEE Computer
          Magazine, October 1981.

   [15]   Cohen, D., "Specifications for the Network Voice Protocol",
          RFC 741, ISI/RR 7539, Information Sciences Institute,
          March 1976.

   [16]   Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
          Information Sciences Institute, May 1979.

   [17]   COMPASS, "Semi-Annual Technical Report", CADD-7603-0411,
          Massachusetts Computer Associates, 4 March 1976. Also as,
          "National Software Works, Status Report No. 1,"
          RADC-TR-76-276, Volume 1, September 1976. And COMPASS. "Second
          Semi-Annual Report," CADD-7608-1611, Massachusetts Computer
          Associates, August 1976.

   [18]   Crispin, M., "Telnet Logout Option", Stanford University-AI,
          RFC 727, April 1977.

   [19]   Crispin, M., "Telnet SUPDUP Option", Stanford University-AI,
          RFC 736, October 1977.

   [20]   Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953,
          October 1977.

   [21]   Crocker, D., "Telnet Output Carriage-Return Disposition
          Option", RFC 652, October 1974.

   [22]   Crocker, D., "Telnet Output Formfeed Disposition Option",
          RFC 655, October 1974.

   [23]   Crocker, D., "Telnet Output Linefeed Disposition", RFC 658,
          October 1974.

   [24]   Crocker, D., "Telnet Output Horizontal Tab Disposition
          Option", RFC 654, October 1974.

   [25]   Crocker, D., "Telnet Output Horizontal Tabstops Option",
          RFC 653, October 1974.

   [26]   Crocker, D., "Telnet Output Vertical Tab Disposition Option",
          RFC 657, October 1974.

   [27]   Crocker, D., "Telnet Output Vertical Tabstops Option",
          RFC 656, October 1974.


Page 35

Documents

   [28]   Crocker, D. H. and R. H. Gumpertz, "Revised Telnet Byte Marco
          Option", RFC 735, November 1977.

   [29]   Croft, B., and J. Gilmore, "BOOTSTRAP Protocol (BOOTP)",
          RFC 951, Stanford and SUN Microsytems, September 1985.

   [30]   Day, J., "Telnet Data Entry Terminal Option", RFC 732,
          September 1977.

   [31]   DDN Protocol Handbook, "Telnet Output Line Width Option",
          NIC 50005, December 1985.

   [32]   DDN Protocol Handbook, "Telnet Output Page Size Option",
          NIC 50005, December 1985.

   [33]   DDN Protocol Handbook, "Telnet Reconnection Option",
          NIC 50005, December 1985.

   [34]   Deering, S. E., "Host Extensions for IP Multicasting",
          RFC 988, Stanford University, December 1985.

   [35]   Elvy, M., and R. Nedved, "Network Mail Path Service", RFC 915,
          Harvard and CMU, July 1986.

   [36]   Feinler, E., editor, "DDN Protocol Handbook", Network
          Information Center, SRI International, December 1985.

   [37]   Feinler, E., editor, "Internet Protocol Transition Workbook",
          Network Information Center, SRI International, March 1982.

   [38]   Feinler, E. and J. Postel, eds., "ARPANET Protocol Handbook",
          NIC 7104, for the Defense Communications Agency by SRI
          International, Menlo Park, California, Revised January 1978.

   [39]   Feinler, E., K. Harrenstien, Z. Su, and V. White, "DoD
          Internet Host Table Specification", RFC 810, SRI
          International, March 1982.

   [40]   Finlayson, R., T. Mann, J. Mogul, and M. Theimer, "A Reverse
          Address Resolution Protocol", RFC 903, Stanford University,
          June 1984.

   [41]   Forgie, J., "ST - A Proposed Internet Stream Protocol",
          IEN 119, MIT Lincoln Laboratory, September 1979.

   [42]   Forsdick, H., "CFTP", Network Message, Bolt Beranek and
          Newman, January 1982.


Page 36

Documents

   [43]   Greenberg, B., "Telnet SUPDUP-OUTPUT Option", RFC 749,
          MIT-Multics, September 1978.

   [44]   Harrenstien, K., "Name/Finger", RFC 742, NIC 42758,
          SRI International,  December 1977.

   [45]   Harrenstien, K., V. White, and E. Feinler, "Hostnames Server",
          RFC 811, SRI International, March 1982.

   [46]   Harrenstien, K., and V. White, "Nicname/Whois", RFC 812,
          SRI International, March 1982.

   [47]   Haverty, J., "XNET Formats for Internet Protocol Version 4",
          IEN 158, October 1980.

   [48]   Hinden, R. M., "A Host Monitoring Protocol", RFC 869,
          Bolt Beranek and Newman, December 1983.

   [49]   Hinden, R., and A. Sheltzer, "The DARPA Internet Gateway",
          RFC 823, September 1982.

   [50]   Hornig, C., "A Standard for the Transmission of IP Datagrams
          over Ethernet Networks, RFC 894, Symbolics, April 1984.

   [51]   International Standards Organization, "ISO Transport Protocol
          Specification - ISO DP 8073", RFC 905, April 1984.

   [52]   International Standards Organization, "Protocol for Providing
          the Connectionless-Mode Network Services", RFC 926, ISO,
          December 1984.

   [53]   Kantor, B., and P. Lapsley, "Network News Transfer Protocol",
          RFC 977, UC San Diego & UC Berkeley, February 1986.

   [54]   Killian, E., "Telnet Send-Location Option", RFC 779,
          April 1981.

   [55]   Korb, J. T., "A Standard for the Transmission of IP Datagrams
          Over Public Data Networks", RFC 877, Purdue University,
          September 1983.

   [56]   Lottor, M. K., "Simple File Transfer Protocol", RFC 913, MIT,
          September 1984.

   [57]   Malis, A., "Logical Addressing Implementation Specification",
          BBN Report 5256, pp 31-36, May 1983.


Page 37

Documents

   [58]   Metcalfe, R. M. and D. R. Boggs, "Ethernet: Distributed Packet
          Switching for Local Computer Networks", Communications of the
          ACM, 19 (7), pp 395-402, July 1976.

   [59]   Miller, T., "Internet Reliable Transaction Protocol", RFC 938,
          ACC, February 1985.

   [60]   Mills, D., "Network Time Protocol", RFC 958, M/A-COM Linkabit,
          September 1985.

   [61]   Mockapetris, P., "Domain Names - Implementation and
          Specification", RFC 883, Information Sciences Institute,
          November 1983.

   [62]   Nedved, R., "Telnet Terminal Location Number Option", RFC 946,
          Carnegie-Mellon University, May 1985.

   [63]   NSW Protocol Committee, "MSG: The Interprocess Communication
          Facility for the National Software Works", CADD-7612-2411,
          Massachusetts Computer Associates, BBN 3237, Bolt Beranek and
          Newman, Revised December 1976.

   [64]   Plummer, D., "An Ethernet Address Resolution Protocol or
          Converting Network Protocol Addresses to 48-bit Ethernet
          Addresses for Transmission on Ethernet Hardware", RFC 826,
          MIT-LCS, November 1982.

   [65]   Postel, J., "Active Users", RFC 866, Information
          Sciences Institute, May 1983.

   [66]   Postel, J., "A Standard for the Transmission of IP Datagrams
          over Experimental Ethernet Networks, RFC 895, Information
          Sciences Institute, April 1984.

   [67]   Postel, J., "Character Generator Protocol", RFC 864,
          Information Sciences Institute, May 1983.

   [68]   Postel, J., "Daytime Protocol", RFC 867, Information Sciences
          Institute, May 1983.

   [69]   Postel, J., "Discard Protocol", RFC 863, Information Sciences
          Institute, May 1983.

   [70]   Postel, J., "Echo Protocol", RFC 862, Information Sciences
          Institute, May 1983.

   [71]   Postel, J. and J. Reynolds, "File Transfer Protocol", RFC 959,
          Information Sciences Institute, October 1985.


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Documents

   [72]   Postel, J., "Internet Control Message Protocol - DARPA
          Internet Program Protocol Specification", RFC 792,
          Information Sciences Institute, September 1981.

   [73]   Postel, J., "Internet Message Protocol", RFC 759, IEN 113,
          Information Sciences Institute, August 1980.

   [74]   Postel, J., "Name Server", IEN 116, Information Sciences
          Institute, August 1979.

   [75]   Postel, J., "Quote of the Day Protocol", RFC 865,
          Information Sciences Institute, May 1983.

   [76]   Postel, J., "Remote Telnet Service", RFC 818,
          Information Sciences Institute, November 1982.

   [77]   Postel, J., "Simple Mail Transfer Protocol", RFC 821,
          Information Sciences Institute, August 1982.

   [78]   Postel, J., "Telnet End of Record Option", RFC 885,
          Information Sciences Institute, December 1983.

   [79]   Postel, J., "User Datagram Protocol", RFC 768
          Information Sciences Institute, August 1980.

   [80]   Postel, J., ed., "Internet Protocol - DARPA Internet Program
          Protocol Specification", RFC 791, Information Sciences
          Institute, September 1981.

   [81]   Postel, J., ed., "Transmission Control Protocol - DARPA
          Internet Program Protocol Specification", RFC 793,
          Information Sciences Institute, September 1981.

   [82]   Postel, J. and D. Crocker, "Remote Controlled Transmission and
          Echoing Telnet Option", RFC 726, March 1977.

   [83]   Postel, J., and K. Harrenstien, "Time Protocol", RFC 868,
          Information Sciences Institute, May 1983.

   [84]   Postel, J. and J. Reynolds, "Telnet Extended Options - List
          Option", RFC 861, Information Sciences Institute, May 1983.

   [85]   Postel, J. and J. Reynolds, "Telnet Binary Transmission",
          RFC 856, Information Sciences Institute, May 1983.

   [86]   Postel, J. and J. Reynolds, "Telnet Echo Option", RFC 857,
          Information Sciences Institute, May 1983.


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Documents

   [87]   Postel, J., and J. Reynolds, "Telnet Protocol Specification",
          RFC 854, Information Sciences Institute, May 1983.

   [88]   Postel, J. and J. Reynolds, "Telnet Status Option", RFC 859,
          Information Sciences Institute, May 1983.

   [89]   Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead Option",
          RFC 858, Information Sciences Institute, May 1983.

   [90]   Postel, J. and J. Reynolds, "Telnet Timing Mark Option",
          RFC 860, Information Sciences Institute, May 1983.

   [91]   Reynolds, J. and J. Postel, "Official Internet Protocols",
          RFC 1011, Information Sciences Institute, May 1987.

   [92]   Seamonson, L. J., and E. C. Rosen, "STUB" Exterior Gateway
          Protocol", RFC 888, BBN Communications Corporation,
          January 1984.

   [93]   Shuttleworth, B., "A Documentary of MFENet, a National
          Computer Network", UCRL-52317, Lawrence Livermore Labs,
          Livermore, California, June 1977.

   [94]   Silverman, S., "Output Marking Telnet Option", RFC 933, MITRE,
          January 1985.

   [95]   Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783,
          MIT/LCS, June 1981.

   [96]   Solomon, M., L. Landweber, and D. Neuhengen, "The CSNET Name
          Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.

   [97]   Solomon, M., and E. Wimmers, "Telnet Terminal Type Option",
          RFC 930, Supercedes RFC 884, University of Wisconsin, Madison,
          January 1985.

   [98]   Sproull, R., and E. Thomas, "A Networks Graphics Protocol",
          NIC 24308, August 1974.

   [99]   StJohns, M., "Authentication Service", RFC 931, TPSC,
          January 1985.

[100] Tappan, D. C., "The CRONUS Virtual Local Network", RFC 824, Bolt Beranek and Newman, August 1982.

[101] Taylor, J., "ERPC Functional Specification", Version 1.04, HYDRA Computer Systems, Inc., July 1984.


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Documents

[102] "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, MA. Also as: "The Ethernet - A Local Area Network", Version 1.0, Digital Equipment Corporation, Intel Corporation, Xerox Corporation, September 1980. And: "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specifications", Digital, Intel and Xerox, November 1982. And: XEROX, "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.

[103] The High Level Protocol Group, "A Network Independent File Transfer Protocol", INWG Protocol Note 86, December 1977.

[104] Tovar, "Telnet Extended ASCII Option", RFC 698, Stanford University-AI, July 1975.

[105] Uttal, J, J. Rothschild, and C. Kline, "Transparent Integration of UNIX and MS-DOS", Locus Computing Corporation.

[106] Velten, D., R. Hinden, and J. Sax, "Reliable Data Protocol", RFC 908, BBN Communications Corporation, July 1984.

[107] Wancho, F., "Password Generator Protocol", RFC 972, WSMR, January 1986.

[108] Winston, I., "Two Methods for the Transmission of IP Datagrams Over IEEE 802.3 Networks", RFC 948, University Of
Pennsylvania, June 1985.

[109] Khanna, A., and A. Malis, "The ARPANET AHIP-E Host Access Protocol (Enhanced AHIP)", RFC 1005, BBN Communications Corporation, May 1987.


Page 41

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PEOPLE

   [AGM]     Andy Malis          BBN       Malis@CCS.BBN.COM

   [AV]      Al Vezza            MIT       AV@XX.LCS.MIT.EDU

   [AXH]     Arthur Hartwig      UQNET     ---none---

   [BA4]     Brian Anderson      BBN       baanders@CCQ.BBN.COM

   [BCH2]    Barry Howard        LLL       Howard@LLL-MFE.ARPA

   [BN4]     Bill Nowicki        SUN       Nowicki@SUN.COM

   [CAK]     Chris Kent          PURDUE    CAK@PURDUE.EDU

   [DCP1]    David Plummer       MIT       DCP@SYMBOLICS.ARPA

   [DDC1]    David Clark         MIT       DClark@MIT-MULTICS.ARPA

   [DLM1]    David Mills         LINKABIT  Mills@D.ISI.EDU

   [DPR]     David Reed          MIT-LCS   Reed@MIT-MULTICS.ARPA

   [DT15]    Daniel Tappan       BBN       Tappan@BBN.COM

   [DXD]     Dennis J.W. Dube    VIA SYSTEMS ---none---

   [DXG]     David Goldberg      SMI       sun!dg@UCBARPA.BERKELEY.EDU

   [EAK1]    Earl Killian        LLL       EAK@S1-C.ARPA

   [EBM]     Eliot Moss          MIT       EBM@XX.LCS.MIT.EDU

   [FJW]     Frank J. Wancho     WSMR      WANCHO@SIMTEL20.ARPA

   [FRAN]    Francine Perillo    SRI       Perillo@NIC.SRI.COM

   [GB7]     Gerd Beling         DFVLR     GBELING@ISI.EDU

   [GEOF]    Geoff Goodfellow    SRI       Geoff@SRI-CSL.ARPA

   [GXP]     Gill Pratt          MIT       gill%mit-ccc@MC.LCS.MIT.EDU

   [HCF2]    Harry Forsdick      BBN       Forsdick@A.BBN.COM

   [HWB]     Hans-Werner Braun   MICHIGAN  HWB@MCR.UMICH.EDU


Page 42

People

   [IEEE]    Vince Condello      IEEE      ---none---

   [JAKE]    Jake Feinler        SRI       Feinler@SRI-NIC.ARPA

   [JBP]     Jon Postel          ISI       Postel@ISI.EDU

   [JBW1]    Joseph Walters, Jr. BBN       JWalters@CCX.BBN.COM

   [JD21]    Jonathan Dreyer     BBN       JDreyer@CCV.BBN.COM

   [JFH2]    Jack Haverty        BBN       Haverty@CCV.BBN.COM

   [JFW]     Jon F. Wilkes       STC       Wilkes@STC.ARPA

   [JGH]     Jim Herman          BBN       Herman@CCJ.BBN.COM

   [JR17]    John L. Robinson    CANADA    Robinson@DMC-CRC.ARPA

   [JWF]     Jim Forgie          LL        jwf@LL-EN.ARPA

   [JXE2]    Jeanne Evans        UKMOD     JME%RSRE.MOD.UK@CS.UCL.AC.UK

   [JXM]     Jeff Mogul          Stanford  ---none---

   [JXO]     Jack O'Neil         ENCORE    ---none---

   [JXP]     Joe Pato            Apollo    apollo!pato@EDDIE.MIT.EDU

   [KLH]     Ken Harrenstien     SRI       KLH@NIC.SRI.COM

   [LLP]     Larry Peterson      PURDUE    llp@PURDUE.EDU

   [MA]      Mike Accetta        CMU       MIKE.ACCETTA@CMU-CS-A.EDU

   [MAE]     Marc A. Elvy        HARVARD   elvy@HARVARD.EDU

   [MAS3]    Marc Solomon        MDAC      solomon@OFFICE-1.ARPA

   [MB]      Michael Brescia     BBN       Brescia@CCV.BBN.COM

   [MBG]     Michael Greenwald   MIT-LCS   Greenwald@MIT-MULTICS.ARPA

   [MCSJ]    Mike StJohns        TPSC      StJohns@MIT-MULTICS.ARPA

   [MKL1]    Mark Lottor         MIT       MKL@NIC.SRI.COM

   [MLC]     Mike Corrigan       DDN       Corrigan@DDN1.ARPA


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People

   [MO2]     Michael O'Brien     RAND      OBrien@RAND-UNIX.ARPA

   [MRC]     Mark Crispin        STANFORD
                                         Admin.MRC@SU-SCORE.STANFORD.EDU

   [MTR]     Marshall Rose       NRTC      MRose@NRTC.ARPA

   [MXB]     Mike Berrow         Relational Technology        ---none---

   [MXR]     Mark A. Rosenstein  MIT       mark@BORAX.LCS.MIT.EDU

   [NC3]     J. Noel Chiappa     MIT       JNC@XX.LCS.MIT.EDU

   [PAM6]    Paul McNabb         RICE      pam@PURDUE.EDU

   [PHD1]    Pieter Ditmars      BBN       pditmars@CCX.BBN.COM

   [PK]      Peter Kirstein      UCL       Kirstein@ISI.EDU

   [PL4]     Phil Lapsley        BERKELEY  phil@UCBARPA.BERKELEY.EDU

   [PM1]     Paul Mockapetris    ISI       Mockapetris@ISI.EDU

   [PXD]     Pete Delaney        ECRC      pete%ecrcvax@CSNET-RELAY.ARPA

   [RDB2]    Robert Bressler     BBN       Bressler@CCW.BBN.COM

   [RH6]     Robert Hinden       BBN       Hinden@CCV.BBN.COM

   [RHT]     Robert Thomas       BBN       BThomas@F.BBN.COM

   [RN6]     Rudy Nedved         CMU       Rudy.Nedved@CMU-CS-A.EDU

   [RTB3]    Bob Braden          ISI       Braden@ISI.EDU

   [RWS4]    Robert W. Scheifler ARGUS     RWS@XX.LCS.MIT.EDU

   [RXM]     Robert Myhill       BBN       Myhill@CCS.BBN.COM

   [SA1]     Sten Andler         ARPA      andler.ibm-sj@RAND-RELAY.ARPA

   [SA2]     Saul Amarel         ARPA      Amarel@ISI.EDU

   [SC3]     Steve Casner        ISI       Casner@ISI.EDU

   [SGC]     Steve Chipman       BBN       Chipman@F.BBN.COM

   [SHB]     Steven Blumenthal   BBN       BLUMENTHAL@VAX.BBN.COM


Page 44

People

   [SXS]     Steve Silverman     MITRE     Blankert@MITRE-GATEWAY.ORG

   [SXS1]    Susie Snitzer       Britton-Lee ---none---

   [TXM]     Trudy Miller        ACC       Trudy@ACC.ARPA

   [UXB]     Ulf Bilting         CHALMERS  bilting@PURDUE.EDU

   [WJC2]    Bill Croft          STANFORD  Croft@SUMEX-AIM.ARPA

   [WXB]     William L. Biagi    CISCO     ---none---

   [XEROX]   Pam Cance           XEROX     Cance.OSBUnorth@XEROX.COM

   [ZSU]     Zaw-Sing Su         SRI       ZSu@SRI-TSC.ARPA