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NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Network Working Group J. Postel Request for Comments: 739 USC-ISI NIC: 42341 11 November 1977 ASSIGNED NUMBERS 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 Jon Postel. The assignment of numbers is also handled by Jon. If you are developing a protocol or application that will require the use of a link, socket, etc. please contact Jon to receive a number assignment. Jon Postel USC - Information Sciences Institute 4676 Admiralty Way Marina del Rey, California 90291 phone: (213) 822-1511 ARPANET mail: POSTEL@ISIB Most of the protocols mentioned here are documented in the RFC series of notes. The more prominent and more generally used are documented in the Protocol Handbook [1] prepared by the Network Information Center (NIC). In the lists that follow a bracketed number, e.g. [1], off to the right of the page indicates a reference to the protocol assigned that number. [Page 1] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Link Numbers ASSIGNED 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. Some time after the ARPANET Host-to-Host (AHHP) protocol was defined and, by now, some time ago the definition of this field was changed to "Message-ID" and the length to 12 bits. The name link now refers to the high order 8 bits of this 12 bit message-id field. The low order 4 bits of the message-id field are to be zero unless specifically specified otherwise for the particular protocol used on that link. The Host/IMP interface is defined in BBN report 1822 [2]. Link Assignments: Decimal Octal Description References ------- ----- ----------- ---------- 0 0 AHHP Control Messages [1,3] 1 1 Reserved 2-71 2-107 AHHP Regular Messages [1,3] 72-151 110-227 Reserved 152 230 PARC Universal Protocol 153 231 TIP Status Reporting 154 232 TIP Accounting 155-158 233-236 Internet Protocol [35,36] 159-191 237-277 Measurements [28] 192-195 300-303 Message Switching Protocol [4,5] 196-255 304-377 Experimental Protocols [Page 2] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Socket Numbers ASSIGNED SOCKET NUMBERS Sockets are used in the AHHP [1,3] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to all callers an Initial Connection Procedure ICP [1,34] is used between the user process and the server process. This list specifies the socket used by the server process as its contact socket. Socket Assignments: General Assignments: Decimal Octal Description ------- ----- ----------- 0-63 0-77 Network Wide Standard Function 64-127 100-177 Hosts Specific Functions 128-223 200-337 Reserved for Future Use 224-255 340-377 Any Experimental Function [Page 3] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Socket Numbers Specific Assignments: Decimal Octal Description References ------- ----- ----------- ---------- Network Standard Functions 1 1 Old Telnet [6] 3 3 Old File Transfer [7,8,9] 5 5 Remote Job Entry [10] 7 7 Echo [11] 9 11 Discard [12] 11 13 Who is on or SYSTAT 13 15 Date and Time 15 17 Who is up or NETSTAT 17 21 Short Text Message 19 23 Character generator or TTYTST [13] 21 25 New File Transfer [1,14,15] 23 27 New Telnet [1,16,17] 25 31 Distributed Programming System [18,19] 27 33 NSW User System w/COMPASS FE [20] 29 35 MSG-3 ICP [21] 31 37 MSG-3 Authentication [21] 33 41 DPS ICP [18,19] 35 43 IO Station Spooler 37 45 Time Server [22] 39 47 NSW User System w/SRI FE [20] Host Specific Functions 65 101 Speech Data Base at LL-TX-2 [23] 67 103 Datacomputer at CCA [24] 69 105 CPYNET 71 107 NETRJS (EBCDIC) at UCLA-CCN [25] 73 111 NETRJS (ASCII) at UCLA-CCN [25] 75 113 NETRJS (TTY) at UCLA-CCN [25] 77 115 any private RJE server 79 117 Finger 81 121 Network BSYS 95 137 SUPDUP [33] Experimental Functions 229 345 Garlick's Debugger 232-237 350-355 Authorized Mailer at BBN 239 357 Graphics [1,26] 241 361 NCP Measurement [27,28] 243 363 Survey Measurement [28,29,30] 245 365 LINK [31] 247 367 TIPSRV 249-255 371-377 RSEXEC [31,32] [Page 4] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Network Numbers ASSIGNED NETWORK NUMBERS This list of network numbers is used in the internetwork protocols now under development, the field is 8 bits in size. Assigned Network Numbers Decimal Octal Network ------- ----- ------- 0 0 Reserved 1 1 BBN Packet Radio Network 2 2 SF Bay Area Packet Radio Network (1) 3 3 BBN RCC Network 4 4 Atlantic Satellite Network 5 5 Washington D.C. Packet Radio Network 6 6 SF Bay Area Packet Radio Network (2) 7-9 7-11 Not assigned 10 12 ARPANET 11 13 University College London Network 12 14 CYCLADES 13 15 National Physical Laboratory 14 16 TELENET 15 17 British Post Office EPSS 16 20 DATAPAC 17 21 TRANSPAC 18 22 LCS Network 19 23 TYMNET 20-254 24-376 Unassigned 255 377 Reserved [Page 5] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Internet Message Versions ASSIGNED INTERNET MESSAGE VERSIONS In the internetwork protocols there is a field to identify the version of the internetwork general protocol. This field is 4 bits in size. Assigned Internet Message Versions Decimal Octal Version References ------- ----- ------- ---------- 0 0 Old [35] 1 1 Current [36] 2-14 2-16 Unassigned 15 17 Reserved [Page 6] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Internet Message Formats ASSIGNED INTERNET MESSAGE FORMATS In the internetwork protocols there is a field to identify the format of the host level specific protocol. This field is 8 bits in size. Assigned Internet Message Formats Decimal Octal Format References ------- ----- ------ ---------- 0 0 Reserved 1 1 raw internet 2 2 TCP-3 [36] 3 3 DSP [37,38] 2-254 2-376 Unassigned 255 377 Reserved [Page 7] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers Assigned Internet Message Types ASSIGNED INTERNET MESSAGE TYPES In the internetwork old protocol there is a field to identify the type of the message. This field is 4 bits in size. Assigned Internet Message Types Decimal Octal Type ------- ----- ---- 0 0 Escape 1 1 TCP-2 2 2 Secure 3 3 Gateway 4 4 Measurement 5 5 DSP 6 6 UCL 7-12 7-14 Reserved 13 15 Pluribus 14 16 Telenet 15 17 Xnet [Page 8] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers References REFERENCES [1] Feinler, E. "ARPANET Protocol Handbook," NIC 7104, Defense Communications Agency, 1 April 1976. [2] BBN, "Specifications for the Interconnection of a Host and an IMP," Report 1822, Bolt Beranek and Newman, Cambridge, Massachusetts, January 1976. [3] McKenzie,A. "Host/Host Protocol for the ARPA Network," NIC 8246, January 1972. [4] Walden, D. "A System for Interrprocess Communication in a Resource Sharing Computer Network," RFC 62, NIC 4962, 3-Aug-70. Also published in Communications of the ACM volume 15, number 4, April 1972. [5] Bressler, B. "A Proposed Experiment with a Message Switching Protocol," RFC 333, NIC 9926, 15-May-72. [6] Postel, J. "Telnet Protocol," RFC 318, NIC 9348, 3-April-72. [7] McKenzie, A. "File Transfer Protocol," NIC 14333, RFC 454, 16-Feb-73. [8] Clements, R. "FTPSRV -- Extensions for Tenex Paged Files," RFC 683, NIC 32251, 3-April-75. [9] Harvey, B. "One More Try on the FTP," RFC 691, NIC 32700, 6-Jun-75. [10] Bressler, B. "Remote Job Entry Protocol," RFC 407, NIC 12112, 16-Oct-72. [11] Postel, J. "Echo Process," RFC 347, NIC 10426, 30-May-72. [12] Postel, J. "Discard Process," RFC 348, NIC 10427, 30-May-72. [13] Postel, J. "Character Generator Process," RFC 429, NIC 13281, 12-Dec-72. [14] Neigus, N. "File Transfer Protocol," NIC 17759 RFC 542 12-July-73. [15] Postel, J. "Revised FTP Reply Codes," NIC 30843 RFC 640 5-June-74. [Page 9] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers References [16] McKenzie, A. "Telnet Protocol Specifications," NIC 18639, August 1973. [17] McKenzie, A. "Telnet Option Specification," NIC 18640, August 1973. [18] White, J. "A High Level Framework for Network-Based Resource Sharing," RFC 707, NIC 34263, 14 January 1976. Also in NCC Proceedings, AFIPS, June 1976. [19] White, J. "Elements of a Distributed Programming System," RFC 708, NIC 34353, 28 January 1976. [20] 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, 16 August 1976. [21] 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 24 December 1976. [22] Harrenstien, K. "Time Server," RFC 738, NIC 42218, 31-Oct-77. [23] Armenti, A., D. Hall, and A. Stone. "Lincoln Speech Data Facility," SUR Note 37, NIC 10917, 14 July 1972. [24] CCA, "Datacomputer Version 1 User Manual," Computer Corporation of America, August 1975. [25] Braden, R. "Interim NETRJS Specification," RFC 189, NIC 7133, 15-July-71. [26] Sproull, R, and E. Thomas. "A Networks Graphics Protocol," NIC 24308, 16-Aug-74. [27] Cerf, V., "NCP Statistics," RFC 388, NIC 11360, 23 August 1972. [28] Cerf, V., "Formation of a Network Measurement Group (NMG)," RFC 323, NIC 9630, 23 March 1972. [Page 10] NWG/RFC# 739 JBP 11 Nov 77 42341 Assigned Numbers References [29] Bhushan, A., "A Report on the Survey Project," RFC 530, NIC 17375, 22 June 1973. [30] Cantor, D., "Storing Network Survey Data at the Datacomputer," RFC 565, NIC 18777, 28 August 1973. [31] Bressler, R., "Inter-Entity Communication -- An Experiment," RFC 441, NIC 13773, 19 January 1973. [32] Thomas, R. "A Resource Sharing Executive for the ARPANET," AFIPS Conference Proceedings, 42:155-163, NCC, 1973. [33] Crispin, M. "SUPDUP Protocol," RFC 734, NIC 41953, 7 October 1977. [34] Postel, J. "Official Initial Connection Protocol," NIC 7101, 11 June 1971. [35] Cerf, V. "Specification of Internet Transmission Control Program -- TCP (version 2)," March 1977. [36] Cerf, V. and J. Postel, "Specification of Internet Transmission Control Program -- TCP-3," November 1977. [37] Reed, D. "Protocols for the LCS Network," Local Network Note 3, Laboratory for Computer Science, MIT, 29 November 1976. [38] Clark, D. "Revision of DSP Specification," Local Network Note 9, Laboratory for Computer Science, MIT, 17 June 1977. [Page 11]