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Network Working Group Internet Activities Board Request for Comments: 1200 J. Postel, Editor Obsoletes: RFCs 1140, April 1991 1100, 1083, 1130 IAB OFFICIAL PROTOCOL STANDARDS Status of this Memo This memo describes the state of standardization of protocols used in the Internet as determined by the Internet Activities Board (IAB). Distribution of this memo is unlimited. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. The Standardization Process . . . . . . . . . . . . . . . . 2 2. The Request for Comments Documents . . . . . . . . . . . . . 5 3. Other Reference Documents . . . . . . . . . . . . . . . . . 6 3.1. Assigned Numbers . . . . . . . . . . . . . . . . . . . . . 6 3.2. Annotated Internet Protocols . . . . . . . . . . . . . . . 6 3.3. Gateway Requirements . . . . . . . . . . . . . . . . . . . 6 3.4. Host Requirements . . . . . . . . . . . . . . . . . . . . 6 3.5. The MIL-STD Documents . . . . . . . . . . . . . . . . . . 7 4. Explanation of Terms . . . . . . . . . . . . . . . . . . . . 7 4.1. Definitions of Protocol State . . . . . . . . . . . . . . 8 4.1.1. Standard Protocol . . . . . . . . . . . . . . . . . . . 8 4.1.2. Draft Standard Protocol . . . . . . . . . . . . . . . . 9 4.1.3. Proposed Standard Protocol . . . . . . . . . . . . . . . 9 4.1.4. Experimental Protocol . . . . . . . . . . . . . . . . . 9 4.1.5. Informational Protocol . . . . . . . . . . . . . . . . . 9 4.1.6. Historic Protocol . . . . . . . . . . . . . . . . . . . 9 4.2. Definitions of Protocol Status . . . . . . . . . . . . . .10 4.2.1. Required Protocol . . . . . . . . . . . . . . . . . . .10 4.2.2. Recommended Protocol . . . . . . . . . . . . . . . . . 10 4.2.3. Elective Protocol . . . . . . . . . . . . . . . . . . 10 4.2.4. Limited Use Protocol . . . . . . . . . . . . . . . . . 10 4.2.5. Not Recommended Protocol . . . . . . . . . . . . . . . 10 5. The Standards Track . . . . . . . . . . . . . . . . . . . 10 5.1. The RFC Processing Decision Table . . . . . . . . . . . 10 5.2. The Standards Track Diagram . . . . . . . . . . . . . . 12 6. The Protocols . . . . . . . . . . . . . . . . . . . . . . 14 6.1. Recent Changes . . . . . . . . . . . . . . . . . . . . . 14 6.1.1. New RFCs . . . . . . . . . . . . . . . . . . . . . . . 14 6.1.2. Other Changes . . . . . . . . . . . . . . . . . . . . 20 Internet Activities Board [Page 1] RFC 1200 IAB Standards April 1991 6.2. Standard Protocols . . . . . . . . . . . . . . . . . . . 22 6.3. Network-Specific Standard Protocols . . . . . . . . . . 23 6.4. Draft Standard Protocol . . . . . . . . . . . . . . . . 24 6.5. Proposed Standard Protocol . . . . . . . . . . . . . . . 25 6.6. Experimental Protocol . . . . . . . . . . . . . . . . . 26 6.7. Informational Protocol . . . . . . . . . . . . . . . . . 26 6.8. Historic Protocol . . . . . . . . . . . . . . . . . . . 27 7. Contacts . . . . . . . . . . . . . . . . . . . . . . . . . 27 7.1. IAB, IETF, and IRTF Contacts . . . . . . . . . . . . . . 27 7.1.1. Internet Activities Board (IAB) Contact . . . . . . . 27 7.1.2. Internet Engineering Task Force (IETF) Contact . . . . 28 7.1.3. Internet Research Task Force (IETF) Contact . . . . . 28 7.2. Internet Assigned Numbers Authority (IANA) Contact . . . 28 7.3. Request for Comments Editor Contact . . . . . . . . . . 29 7.4. Network Information Center Contact . . . . . . . . . . . 29 7.5. Other Sources for Requests for Comments . . . . . . . . 30 7.5.1. NSF Network Service Center (NNSC) . . . . . . . . . . 30 7.5.2. NSF Network Information Service (NIS) . . . . . . . . 30 7.5.3. CSNET Coordination and Information Center (CIC) . . . 31 8. Security Considerations . . . . . . . . . . . . . . . . . 31 9. Author's Address . . . . . . . . . . . . . . . . . . . . . 31 Introduction Discussion of the standardization process and the RFC document series is presented first, followed by an explanation of the terms. Sections 6.2 - 6.8 contain the lists of protocols in each stage of standardization. Finally come pointers to references and contacts for further information. This memo is intended to be issued quarterly; please be sure the copy you are reading is current. Current copies may be obtained from the Network Information Center or from the Internet Assigned Numbers Authority (see the contact information at the end of this memo). Do not use this edition after 30-Jun-91. See Section 6.1 for a description of recent changes. In the official lists in sections 6.2 - 6.8, an asterisk (*) next to a protocol denotes that it is new to this document or has been moved from one protocol level to another. 1. The Standardization Process The Internet Activities Board maintains this list of documents that define standards for the Internet protocol suite (see RFC-1160 for an explanation of the role and organization of the IAB and its subsidiary groups, the Internet Engineering Task Force (IETF) and the Internet Research Task Force (IRTF)). The IAB provides these Internet Activities Board [Page 2] RFC 1200 IAB Standards April 1991 standards with the goal of co-ordinating the evolution of the Internet protocols; this co-ordination has become quite important as the Internet protocols are increasingly in general commercial use. The majority of Internet protocol development and standardization activity takes place in the working groups of the Internet Engineering Task Force. Protocols which are to become standards in the Internet go through a series of states (proposed standard, draft standard, and standard) involving increasing amounts of scrutiny and experimental testing. At each step, the Internet Engineering Steering Group (IESG) of the IETF must make a recommendation for advancement of the protocol and the IAB must ratify it. If a recommendation is not ratified, the protocol is remanded to the IETF for further work. To allow time for the Internet community to consider and react to standardization proposals, the IAB imposes a minimum delay of 4 months before a proposed standard can be advanced to a draft standard and 6 months before a draft standard can be promoted to standard. It is general IAB practice that no proposed standard can be promoted to draft standard without at least two independent implementations (and the recommendation of the IESG). Promotion from draft standard to standard generally requires operational experience and demonstrated interoperability of two or more implementations (and the recommendation of the IESG). In cases where there is uncertainty as to the proper decision concerning a protocol the IAB may convene a special review committee consisting of experts from the IETF, IRTF and the IAB with the purpose of recommending an explicit action to the IAB. Advancement of a protocol to proposed standard is an important step since it marks a protocol as a candidate for eventual standardization (it puts the protocol "on the standards track"). Advancement to draft standard is a major step which warns the community that, unless major objections are raised or flaws are discovered, the protocol is likely to be advanced to standard in six months. Some protocols have been superseded by better ones or are otherwise unused. Such protocols are still documented in this memorandum with the designation "historic". Because the IAB believes it is useful to document the results of early protocol research and development work, some of the RFCs document protocols which are still in an experimental condition. The protocols are designated "experimental" in this memorandum. They Internet Activities Board [Page 3] RFC 1200 IAB Standards April 1991 appear in this report as a convenience to the community and not as evidence of their standardization. Other protocols, such as those developed by other standards organizations, or by particular vendors, may be of interest or may be recommended for use in the Internet. The specifications of such protocols may be published as RFCs for the convenience of the Internet community. These protocols are labeled "informational" in this memorandum. In addition to the working groups of the IETF, protocol development and experimentation may take place as a result of the work of the research groups of the Internet Research Task Force, or the work of other individuals interested in Internet protocol development. The IAB encourages the documentation of such experimental work in the RFC series, but none of this work is considered to be on the track for standardization until the IESG has made a recommendation to advance the protocol to the proposed standard state, and the IAB has approved this step. A few protocols have achieved widespread implementation without the approval of the IESG and the IAB. For example, some vendor protocols have become very important to the Internet community even though they have not been recommended by the IESG or ratified by the IAB. However, the IAB strongly recommends that the IAB standards process be used in the evolution of the protocol suite to maximize interoperability (and to prevent incompatible protocol requirements from arising). The IAB reserves the use of the terms "standard", "draft standard", and "proposed standard" in any RFC or other publication of Internet protocols to only those protocols which the IAB has approved. In addition to a state (like "Proposed Standard"), a protocol is also assigned a status, or requirement level, in this document. The possible requirement levels ("Required", "Recommended", "Elective", "Limited Use", and "Not Recommended") are defined in Section 4.2. When a protocol is on the standards track, that is in the proposed standard, draft standard, or standard state (see Section 5), the status shown in Section 6 is the current status. For a proposed or draft standard, however, the IAB will also endeavor to indicate the eventual status this protocol will have after adoption as a standard. Few protocols are required to be implemented in all systems; this is because there is such a variety of possible systems, for example, gateways, terminal servers, workstations, and multi-user hosts. The requirement level shown in this document is only a one word label, which may not be sufficient to characterize the implementation requirements for a protocol in all situations. For some protocols, Internet Activities Board [Page 4] RFC 1200 IAB Standards April 1991 this document contains an additional status paragraph. In addition, more detailed status information is contained in separate requirements documents (see Section 3). 2. The Request for Comments Documents The documents called Request for Comments (or RFCs) are the working notes of the "Network Working Group", that is the Internet research and development community. A document in this series may be on essentially any topic related to computer communication, and may be anything from a meeting report to the specification of a standard. Notice: All standards are published as RFCs, but not all RFCs specify standards. Anyone can submit a document for publication as an RFC. Submissions must be made via electronic mail to the RFC Editor (see the contact information at the end of this memo). While RFCs are not refereed publications, they do receive technical review from the task forces, individual technical experts, or the RFC Editor, as appropriate. The RFC series comprises a wide range of documents, ranging from informational documents of general interests to specifications of standard Internet protocols. In cases where submission is intended to document a proposed standard, draft standard, or standard protocol, the RFC Editor will publish the document only with the approval of both the IESG and the IAB. For documents describing experimental work, the RFC Editor will notify the IESG before publication, allowing for the possibility of review by the relevant IETF working group or IRTF research group and provide those comments to the author. See Section 5.1 for more detail. Once a document is assigned an RFC number and published, that RFC is never revised or re-issued with the same number. There is never a question of having the most recent version of a particular RFC. However, a protocol (such as File Transfer Protocol (FTP)) may be improved and re-documented many times in several different RFCs. It is important to verify that you have the most recent RFC on a particular protocol. This "IAB Official Protocol Standards" memo is the reference for determining the correct RFC for the current specification of each protocol. The RFCs are available from the Network Information Center at SRI International, and a number of other sites. For more information Internet Activities Board [Page 5] RFC 1200 IAB Standards April 1991 about obtaining RFCs, see Sections 7.4 and 7.5. 3. Other Reference Documents There are four other reference documents of interest in checking the current status of protocol specifications and standardization. These are the Assigned Numbers, the Annotated Internet Protocols, the Gateway Requirements, and the Host Requirements. Note that these documents are revised and updated at different times; in case of differences between these documents, the most recent must prevail. Also, one should be aware of the MIL-STD publications on IP, TCP, Telnet, FTP, and SMTP. These are described in Section 3.5. 3.1. Assigned Numbers This document lists the assigned values of the parameters used in the various protocols. For example, IP protocol codes, TCP port numbers, Telnet Option Codes, ARP hardware types, and Terminal Type names. Assigned Numbers was most recently issued as RFC-1060. Another document, Internet Numbers, lists the assigned IP network numbers, and the autonomous system numbers. Internet Numbers was most recently issued as RFC-1166. 3.2. Annotated Internet Protocols This document lists the protocols and describes any known problems and ongoing experiments. This document was most recently issued as RFC-1011. 3.3. Gateway Requirements This document reviews the specifications that apply to gateways and supplies guidance and clarification for any ambiguities. Gateway Requirements is RFC-1009. A working group of the IETF is actively preparing a revision. 3.4. Host Requirements This pair of documents reviews and updates the specifications that apply to hosts, and it supplies guidance and clarification for any ambiguities. Host Requirements was issued as RFC-1122 and RFC-1123. Internet Activities Board [Page 6] RFC 1200 IAB Standards April 1991 3.5. The MIL-STD Documents The Internet community specifications for IP (RFC-791) and TCP (RFC- 793) and the DoD MIL-STD specifications are intended to describe exactly the same protocols. Any difference in the protocols specified by these sets of documents should be reported to DCA and to the IAB. The RFCs and the MIL-STDs for IP and TCP differ in style and level of detail. It is strongly advised that the two sets of documents be used together, along with RFC-1122. The IAB and the DoD MIL-STD specifications for the FTP, SMTP, and Telnet protocols are essentially the same documents (RFCs 765, 821, 854). The MIL-STD versions have been edited slightly. Note that the current Internet specification for FTP is RFC-959 (as modified by RFC-1123). Internet Protocol (IP) MIL-STD-1777 Transmission Control Protocol (TCP) MIL-STD-1778 File Transfer Protocol (FTP) MIL-STD-1780 Simple Mail Transfer Protocol (SMTP) MIL-STD-1781 Telnet Protocol and Options (TELNET) MIL-STD-1782 These documents are available from the Naval Publications and Forms Center. Requests can be initiated by telephone, telegraph, or mail; however, it is preferred that private industry use form DD1425, if possible. These five documents are included in the 1985 DDN Protocol Handbook (available from the Network Information Center, see Section 7.4). Naval Publications and Forms Center, Code 3015 5801 Tabor Ave Philadelphia, PA 19120 Phone: 1-215-697-3321 (order tape) 1-215-697-4834 (conversation) 4. Explanation of Terms There are two independent categorization of protocols. The first is the STATE of standardization, one of "standard", "draft standard", "proposed standard", "experimental", "informational" or "historic". The second is the STATUS of this protocol, one of "required", "recommended", "elective", "limited use", or "not recommended". The status or requirement level is difficult to portray in a one word label. These status labels should be considered only as an indication, and a further description, or applicability statement, should be consulted. Internet Activities Board [Page 7] RFC 1200 IAB Standards April 1991 When a protocol is advanced to proposed standard or draft standard, it is labeled with a current status and when possible, the IAB also notes the status that the protocol is expected to have when it reaches the standard state. At any given time a protocol occupies a cell of the following matrix. Protocols are likely to be in cells in about the following proportions (indicated by the relative number of Xs). A new protocol is most likely to start in the (proposed standard, elective) cell, or the (experimental, not recommended) cell. S T A T U S Req Rec Ele Lim Not +-----+-----+-----+-----+-----+ Std | X | XXX | XXX | | | S +-----+-----+-----+-----+-----+ Draft | X | X | XXX | | | T +-----+-----+-----+-----+-----+ Prop | | X | XXX | X | | A +-----+-----+-----+-----+-----+ Info | | X | XXX | X | X | T +-----+-----+-----+-----+-----+ Expr | | | X | XXX | X | E +-----+-----+-----+-----+-----+ Hist | | | | X | XXX | +-----+-----+-----+-----+-----+ What is a "system"? Some protocols are particular to hosts and some to gateways; a few protocols are used in both. The definitions of the terms below will refer to a "system" which is either a host or a gateway (or both). It should be clear from the context of the particular protocol which types of systems are intended. 4.1. Definitions of Protocol State Every protocol listed in this document is assigned to a STATE of standardization: "standard", "draft standard", "proposed standard", "experimental", or "historic". 4.1.1. Standard Protocol The IAB has established this as an official standard protocol for the Internet. These are separated into two groups: (1) IP protocol and above, protocols that apply to the whole Internet; and (2) network-specific protocols, generally specifications of how to do IP on particular types of networks. Internet Activities Board [Page 8] RFC 1200 IAB Standards April 1991 4.1.2. Draft Standard Protocol The IAB is actively considering this protocol as a possible Standard Protocol. Substantial and widespread testing and comment are desired. Comments and test results should be submitted to the IAB. There is a possibility that changes will be made in a Draft Standard Protocol before it becomes a Standard Protocol. 4.1.3. Proposed Standard Protocol These are protocol proposals that may be considered by the IAB for standardization in the future. Implementation and testing by several groups is desirable. Revision of the protocol specification is likely. 4.1.4. Experimental Protocol A system should not implement an experimental protocol unless it is participating in the experiment and has coordinated its use of the protocol with the developer of the protocol. Typically, experimental protocols are those that are developed as part of an ongoing research project not related to an operational service offering. While they may be proposed as a service protocol at a later stage, and thus become proposed standard, draft standard, and then standard protocols, the designation of a protocol as experimental may sometimes be meant to suggest that the protocol, although perhaps mature, is not intended for operational use. 4.1.5. Informational Protocol Protocols developed by other standard organizations, or vendors, or that are for other reasons outside the purview of the IAB, may be published as RFCs for the convenience of the Internet community as informational protocols. Such protocols may in some cases also be recommended for use in the Internet by the IAB. 4.1.6. Historic Protocol These are protocols that are unlikely to ever become standards in the Internet either because they have been superseded by later developments or due to lack of interest. Internet Activities Board [Page 9] RFC 1200 IAB Standards April 1991 4.2. Definitions of Protocol Status This document lists a STATUS for each protocol. The status is one of "required", "recommended", "elective", "limited use", or "not recommended". 4.2.1. Required Protocol A system must implement the required protocols. 4.2.2. Recommended Protocol A system should implement the recommended protocols. 4.2.3. Elective Protocol A system may or may not implement an elective protocol. The general notion is that if you are going to do something like this, you must do exactly this. There may be several elective protocols in a general area, for example, there are several electronic mail protocols, and several routing protocols. 4.2.4. Limited Use Protocol These protocols are for use in limited circumstances. This may be because of their experimental state, specialized nature, limited functionality, or historic state. 4.2.5. Not Recommended Protocol These protocols are not recommended for general use. This may be because of their limited functionality, specialized nature, or experimental or historic state. 5. The Standards Track This section discusses in more detail the procedures used by the RFC Editor and the IAB in making decisions about the labeling and publishing of protocols as standards. 5.1. The RFC Processing Decision Table Here is the current decision table for processing submissions by the RFC Editor. The processing depends on who submitted it, and the status they want it to have. Internet Activities Board [Page 10] RFC 1200 IAB Standards April 1991 +==========================================================+ |**************| S O U R C E | +==========================================================+ | Desired | IAB | IESG | IRSG | Other | | Status | | | or RG | | +==========================================================+ | | | | | | | Full or | Publish | Vote | Bogus | Bogus | | Draft | (1) | (3) | (2) | (2) | | Standard | | | | | | | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | | Publish | Vote | Refer | Refer | | Proposed | (1) | (3) | (4) | (4) | | Standard | | | | | | | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | | Publish | Notify | Notify | Notify | | Experimental | (1) | (5) | (5) | (5) | | Protocol | | | | | | | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | Information | Publish |Discretion|Discretion|Discretion| | or Opinion | (1) | (6) | (6) | (6) | | Paper | | | | | | | | | | | +==========================================================+ (1) Publish. (2) Bogus. Inform the source of the rules. RFCs specifying Standard, or Draft Standard must come from the IAB, only. (3) Vote by the IAB. If approved then do Publish (1), else do Refer (4). (4) Refer to an Area Director for review by a WG. Expect to see the document again only after approval by the IESG and the IAB. (5) Notify both the IESG and IRSG. If no protest in 1 week then do Discretion (6), else do Refer (4). (6) RFC Editor's discretion. The RFC Editor decides if a review is needed and if so by whom. RFC Editor decides to publish or Internet Activities Board [Page 11] RFC 1200 IAB Standards April 1991 not. Of course, in all cases the RFC Editor can request or make minor changes for style, format, and presentation purposes. The IESG has designated the IESG Secretary as its agent for forwarding documents with IESG approval and for registering protest in response to notifications (5) to the RFC Editor. Documents from Area Directors or Working Group Chairs may be considered in the same way as documents from "other". 5.2. The Standards Track Diagram There is a part of the STATUS and STATE categorization that is called the standards track. Actually, only the changes of state are significant to the progression along the standards track, though the status assignments may be changed as well. The states illustrated by single line boxes are temporary states, those illustrated by double line boxes are long term states. A protocol will normally be expected to remain in a temporary state for several months (minimum four months for proposed standard, minimum six months for draft standard). A protocol may be in a long term state for many years. A protocol may enter the standards track only on the recommendation of the IESG and by action of the IAB; and may move from one state to another along the track only on the recommendation of the IESG and by action of the IAB. That is, it takes both the IESG and the IAB to either start a protocol on the track or to move it along. Generally, as the protocol enters the standards track a decision is made as to the eventual STATUS (elective, recommended, or required) the protocol will have, although a somewhat less stringent current status may be assigned, and it then is placed in the the proposed standard STATE with that status. So the initial placement of a protocol is into state 1. At any time the STATUS decision may be revisited. Internet Activities Board [Page 12] RFC 1200 IAB Standards April 1991 | +<----------------------------------------------+ | ^ V 0 | 4 +-----------+ +===========+ | enter |-->----------------+-------------->|experiment | +-----------+ | +=====+=====+ | | V 1 | +-----------+ V | proposed |-------------->+ +--->+-----+-----+ | | | | | V 2 | +<---+-----+-----+ V | draft std |-------------->+ +--->+-----+-----+ | | | | | V 3 | +<---+=====+=====+ V | standard |-------------->+ +=====+=====+ | | V 5 +=====+=====+ | historic | +===========+ The transition from proposed standard (1) to draft standard (2) can only be by action of the IAB on the recommendation of the IESG and only after the protocol has been proposed standard (1) for at least four months. The transition from draft standard (2) to standard (3) can only be by action of the IAB on the recommendation of the IESG and only after the protocol has been draft standard (2) for at least six months. Occasionally, the decision may be that the protocol is not ready for standardization and will be assigned to the experimental state (4). This is off the standards track, and the protocol may be resubmitted to enter the standards track after further work. There are other paths into the experimental and historic states that do not involve IAB action. Sometimes one protocol is replaced by another and thus becomes historic, it may happen that a protocol on the standards track is in a sense overtaken by another protocol (or other events) and becomes historic (state 5). Internet Activities Board [Page 13] RFC 1200 IAB Standards April 1991 6. The Protocols Subsection 6.1 lists recent RFCs and other changes. Subsections 6.2 - 6.8 list the standards in groups by protocol state. 6.1. Recent Changes 6.1.1. New RFCs: 1218 - Naming Scheme for c=US This is an information document and does not specify any level of standard. 1217 - Memo from the Consortium for Slow Commotion Research (CSCR) This is an information document and does not specify any level of standard. 1216 - Gigabit Network Economics and Paradigm Shifts This is an information document and does not specify any level of standard. 1215 - A Convention for Defining Traps for use with the SNMP This is an information document and does not specify any level of standard. 1214 - OSI Internet Management: Management Information Base A Proposed Standard protocol. 1213 - Management Information Base for Network Management of TCP/IP-based internets: MIB-II Advanced to Draft Standard protocol. 1212 - Concise MIB Definitions This is a new Proposed Standard protocol. 1211 - Problems with the Maintenance of Large Mailing Lists This is an information document and does not specify any level of standard. Internet Activities Board [Page 14] RFC 1200 IAB Standards April 1991 1210 - Network and Infrastructure User Requirements for Transatlantic Research Collaboration - Brussels, July 16-18, and Washington July 24-25, 1990 This is an information document and does not specify any level of standard. 1209 - The Transmission of IP Datagrams over the SMDS Service This is a new Proposed Standard protocol. 1208 - A Glossary of Networking Terms This is an information document and does not specify any level of standard. 1207 - FYI on Questions and Answers - Answers to Commonly asked "Experienced Internet User" Questions This is an information document and does not specify any level of standard. 1206 - FYI on Questions and Answers - Answers to Commonly asked "New Internet User" Questions This is an information document and does not specify any level of standard. 1205 - 5250 Telnet Interface This is an information document and does not specify any level of standard. 1204 - Message Posting Protocol (MPP) This is a new Experimental protocol. 1203 - Interactive Mail Access Protocol - Version 3 (IMAP3) This is a new Experimental protocol. 1202 - Directory Assistance Service This is an information document and does not specify any level of standard. Internet Activities Board [Page 15] RFC 1200 IAB Standards April 1991 1201 - Transmitting IP Traffic over ARCNET Networks A Proposed Standard protocol. 1200 - IAB Official Protocol Standards This memo. 1199 - <not issued yet> 1198 - FYI on the X Window System This is an information document and does not specify any level of standard. 1197 - Using ODA for Translating Multimedia Information This is an information document and does not specify any level of standard. 1196 - The Finger User Information Protocol A Draft Standard protocol. This edition corrects and clarifies in a minor way, RFC 1194. 1195 - Use of OSI IS-IS for Routing in TCP/IP and Dual Environments A Proposed Standard protocol. 1194 - The Finger User Information Protocol A Draft Standard protocol. 1193 - Client Requirements for Real-Time Communication Services This is an information document and does not specify any level of standard. 1192 - Commercialization of the Internet Summary Report This is an information document and does not specify any level of standard. 1191 - Path MTU Discovery (MTU) A Proposed Standard protocol. Internet Activities Board [Page 16] RFC 1200 IAB Standards April 1991 1190 - Experimental Internet Stream Protocol, Version 2 (ST-II) A Limited-Use Experimental protocol. 1189 - The Common Management Information Services and Protocols for the Internet A Proposed Standard protocol. 1188 - A Proposed Standard for the Transmission of IP Datagrams over FDDI Networks A Draft Standard protocol. 1187 - Bulk Table Retrieval with the SNMP A new Experimental protocol. 1186 - The MD4 Message Digest Algorithm A specification of the MD4 Digest Algorithm. This is an information document and does not specify any level of standard. 1185 - TCP Extension for High-Speed Paths An Experimental protocol extension to TCP. 1184 - Telnet Linemode Option A Draft Standard protocol. 1183 - New DNS RR Definitions A new Experimental protocol. 1182 - <not issued yet> 1181 - RIPE Terms of Reference This is an information document and does not specify any level of standard. 1180 - A TCP/IP Tutorial This is an information document and does not specify any level of standard. Internet Activities Board [Page 17] RFC 1200 IAB Standards April 1991 1179 - Line Printer Daemon Protocol This is an information document and does not specify any level of standard. 1178 - Choosing a Name for Your Computer This is an information document and does not specify any level of standard. 1177 - FYI on Questions and Answers - Answers to Commonly asked "New Internet User" Questions This is an information document and does not specify any level of standard. 1176 - Interactive Mail Access Protocol - Version 2 (IMAP2) This is a new Experimental protocol. 1175 - FYI on Where to Start - A Bibliography of Internetworking Information This is an information document and does not specify any level of standard. 1174 - IAB Recommended Policy on Distributing Internet Identifier Assignment and IAB Recommended Policy Change to Internet "Connected" Status This is an information document and does not specify any level of standard. 1173 - Responsibilities of Host and Network Managers: A Summary of the "Oral Tradition" of the Internet This is an information document and does not specify any level of standard. 1172 - The Point-to-Point Protocol (PPP) Initial Configuration Options A Proposed Standard protocol. Internet Activities Board [Page 18] RFC 1200 IAB Standards April 1991 1171 - The Point-to-Point Protocol (PPP) for the Transmission of Multi-Protocol Datagrams Over Point-to-Point Links A Draft Standard protocol. 1170 - Public Key Standards and Licenses This is an information document and does not specify any level of standard. 1169 - Explaining the Role of GOSIP This is an information document and does not specify any level of standard. 1168 - Intermail and Commercial Mail Relay Services This is an information document and does not specify any level of standard. 1167 - Thoughts on the National Research and Education Network This is an information document and does not specify any level of standard. 1166 - Internet Numbers This is an information document and does not specify any level of standard. 1165 - Network Time Protocol (NTP) over the OSI Remote Operations Service An Experimental protocol. 1164 - Application of the Border Gateway Protocol in the Internet A Proposed Standard protocol. 1163 - A Border Gateway Protocol (BGP) A Proposed Standard protocol. Internet Activities Board [Page 19] RFC 1200 IAB Standards April 1991 1162 - Connectionless Network Protocol (ISO 8473) and End System to Intermediate System (ISO 9542) Management Information Base This memo does not specify a standard for the Internet community. However, after experimentation, if sufficient consensus is reached in the Internet community, then a subsequent revision of this document... 1161 - SNMP over OSI An experimental means for running the Simple Network Management Protocol (SNMP) over OSI transports. 1160 - The Internet Activities Board This is an information document and does not specify any level of standard. 1159 - Message Send Protocol An Experimental protocol. 6.1.2. Other Changes: The following are changes to protocols listed in the previous edition. 1213 - Management Information Base for Network Management of TCP/IP-based internets: MIB-II Advanced to Draft Standard protocol. 1196 - The Finger User Information Protocol Advanced to Draft Standard protocol. 1191 - Path MTU Discovery Advanced to Proposed Standard protocol. 1189 - The Common Management Information Services and Protocols for the Internet Moved to Proposed Standard protocol. Internet Activities Board [Page 20] RFC 1200 IAB Standards April 1991 1188 - A Proposed Standard for the Transmission of IP Datagrams over FDDI Networks Advanced to Draft Standard protocol. 1184 - Telnet Linemode Option Advanced to Draft Standard protocol. 1171 - The Point-to-Point Protocol for the Transmission of Multi-Protocol Datagrams Over Point-to-Point Links Advanced to Draft Standard protocol. 1163 - A Border Gateway Protocol (BGP) Advanced to Proposed Standard protocol. Internet Activities Board [Page 21] RFC 1200 IAB Standards April 1991 6.2. Standard Protocols Protocol Name Status RFC ======== ===================================== ============== ==== -------- Assigned Numbers Required 1060 -------- Gateway Requirements Required 1009 -------- Host Requirements - Communications Required 1122 -------- Host Requirements - Applications Required 1123 IP Internet Protocol Required 791 as amended by: -------- IP Subnet Extension Required 950 -------- IP Broadcast Datagrams Required 919 -------- IP Broadcast Datagrams with Subnets Required 922 ICMP Internet Control Message Protocol Required 792 IGMP Internet Group Multicast Protocol Recommended 1112 UDP User Datagram Protocol Recommended 768 TCP Transmission Control Protocol Recommended 793 SMI Structure of Management Information Recommended 1155 MIB Management Information Base Recommended 1156 SNMP Simple Network Management Protocol Recommended 1157 DOMAIN Domain Name System Recommended 1034,1035 TELNET Telnet Protocol Recommended 854 FTP File Transfer Protocol Recommended 959 SMTP Simple Mail Transfer Protocol Recommended 821 MAIL Format of Electronic Mail Messages Recommended 822 CONTENT Content Type Header Field Recommended 1049 EGP Exterior Gateway Protocol Recommended 904 ECHO Echo Protocol Recommended 862 NTP Network Time Protocol Recommended 1119 NETBIOS NetBIOS Service Protocols Elective 1001,1002 DISCARD Discard Protocol Elective 863 CHARGEN Character Generator Protocol Elective 864 QUOTE Quote of the Day Protocol Elective 865 USERS Active Users Protocol Elective 866 DAYTIME Daytime Protocol Elective 867 TIME Time Server Protocol Elective 868 Notes: IGMP -- The Internet Activities Board intends to move towards general adoption of IP multicasting, as a more efficient solution than broadcasting for many applications. The host interface has been standardized in RFC-1112; however, multicast-routing gateways are in the experimental stage and are not widely available. An Internet host should support all of RFC-1112, except for the IGMP protocol itself which is optional; see RFC-1122 for more details. Even without IGMP, implementation of RFC-1112 will provide an important advance: IP-layer access to local network multicast addressing. It Internet Activities Board [Page 22] RFC 1200 IAB Standards April 1991 is expected that IGMP will become recommended for all hosts and gateways at some future date. SMI, MIB, SNMP -- The Internet Activities Board recommends that all IP and TCP implementations be network manageable. At the current time, this implies implementation of the Internet MIB (RFC-1156), the MIB extension MIB-II (RFC-1158, a Draft Standard), and at least the recommended management protocol SNMP (RFC-1157). 6.3. Network-Specific Standard Protocols Protocol Name Status RFC ======== ===================================== =============== ==== ARP Address Resolution Protocol Elective 826 RARP A Reverse Address Resolution Protocol Elective 903 IP-ARPA Internet Protocol on ARPANET Elective BBN 1822 IP-WB Internet Protocol on Wideband Network Elective 907 IP-X25 Internet Protocol on X.25 Networks Elective 877 IP-E Internet Protocol on Ethernet Networks Elective 894 IP-EE Internet Protocol on Exp. Ethernet Nets Elective 895 IP-IEEE Internet Protocol on IEEE 802 Elective 1042 IP-DC Internet Protocol on DC Networks Elective 891 IP-HC Internet Protocol on Hyperchannel Elective 1044 IP-ARC Internet Protocol on ARCNET Elective 1051 IP-SLIP Transmission of IP over Serial Lines Elective 1055 IP-NETBIOS Transmission of IP over NETBIOS Elective 1088 IP-FDDI Transmission of IP over FDDI Elective 1103 IP-IPX Transmission of 802.2 over IPX Networks Elective 1132 Notes: It is expected that a system will support one or more physical networks and for each physical network supported the appropriate protocols from the above list must be supported. That is, it is elective to support any particular type of physical network, and for the physical networks actually supported it is required that they be supported exactly according to the protocols in the above list. See also the Host and Gateway Requirements RFCs for more specific information on network-specific ("link layer") protocols. Internet Activities Board [Page 23] RFC 1200 IAB Standards April 1991 6.4. Draft Standard Protocols Protocol Name Status RFC ======== ===================================== =============== ==== FINGER Finger Protocol Elective 1196* IP-FDDI Internet Protocol on FDDI Networks Elective 1188* TOPT-LINE Telnet Linemode Option Elective 1184* MIB-II MIB-II Elective 1213* PPP Point to Point Protocol Elective 1171* -------- Mail Privacy: Procedures Elective 1113 -------- Mail Privacy: Key Management Elective 1114 -------- Mail Privacy: Algorithms Elective 1115 BOOTP Bootstrap Protocol Recommended 951,1048,1084 RIP Routing Information Protocol Elective 1058 TP-TCP ISO Transport Service on top of the TCP Elective 1006 NICNAME WhoIs Protocol Elective 954 TFTP Trivial File Transfer Protocol Elective 783 Notes: RIP -- The Routing Information Protocol (RIP) is widely implemented and used in the Internet. However, both implementors and users should be aware that RIP has some serious technical limitations as a routing protocol. The IETF is currently developing several candidates for a new standard "open" routing protocol with better properties than RIP. The IAB urges the Internet community to track these developments, and to implement the new protocol when it is standardized; improved Internet service will result for many users. TP-TCP -- As OSI protocols become more widely implemented and used, there will be an increasing need to support interoperation with the TCP/IP protocols. The Internet Engineering Task Force is formulating strategies for interoperation. RFC-1006 provides one interoperation mode, in which TCP/IP is used to emulate TP0 in order to support OSI applications. Hosts that wish to run OSI connection-oriented applications in this mode should use the procedure described in RFC- 1006. In the future, the IAB expects that a major portion of the Internet will support both TCP/IP and OSI (inter-)network protocols in parallel, and it will then be possible to run OSI applications across the Internet using full OSI protocol "stacks". MIB-II -- This memo defines a mandatory extension to the base MIB (RFC-1156) and is a Draft Standard for the Internet community. The extensions described here are currently Elective, but when they become a standard, they will have the same status as RFC-1156, that is, Recommended. See also the note on SMI, MIB and SNMP under Standards. Internet Activities Board [Page 24] RFC 1200 IAB Standards April 1991 PPP -- Point to Point Protocol is a method of sending IP over serial lines, which are a type of physical network. It is anticipated that PPP will be advanced to the network-specific standard protocol state in the future. 6.5. Proposed Standard Protocols Protocol Name Status RFC ======== ===================================== =============== ==== OIM-MIB-II OSI Internet Management: MIB-II Elective 1214* Concise-MIB Concise MIB Definitions Elective 1212* IP-SMDS IP Datagrams over the SMDS Service Elective 1209* IP-ARCNET Transmitting IP Traffic over ARCNET Networks Elective 1201* IS-IS Use of OSI IS-IS for Routing in TCP/IP Elective 1195* and Dual Environments IP-MTU Path MTU Discovery Elective 1191* CMOT Common Management Information Services Elective 1189* and Protocol over TCP/IP PPP-INIT PPP Initial Configuration Options Elective 1172* BGP Border Gateway Protocol Elective 1163,1164* IP-CMPRS Compressing TCP/IP Headers Elective 1144 -------- Echo for ISO-8473 Elective 1139 OSPF Open Shortest Path First Routing Elective 1131 TOPT-ENV Telnet Environment Option Elective 1116* SUN-NFS Network File System Protocol Elective 1094 POP3 Post Office Protocol, Version 3 Elective 1081,1082 SUN-RPC Remote Procedure Call Protocol Elective 1057 PCMAIL Pcmail Transport Protocol Elective 1056 NFILE A File Access Protocol Elective 1037 -------- Mapping between X.400(84) and RFC-822 Elective 987,1026 NNTP Network News Transfer Protocol Elective 977 HOSTNAME HOSTNAME Protocol Elective 953 SFTP Simple File Transfer Protocol Elective 913 RLP Resource Location Protocol Elective 887 SUPDUP SUPDUP Protocol Elective 734 Notes: IP-SMDS and IP-ARCNET -- These define methods of sending IP over particular network types. It is anticipated that these will be advanced to the network specific standard protocol state in the future. Internet Activities Board [Page 25] RFC 1200 IAB Standards April 1991 6.6. Experimental Protocols Protocol Name Status RFC ======== ===================================== =============== ==== MPP Message Posting Protocol Limited Use 1204* ST-II Stream Protocol Limited Use 1190* SNMP-BULK Bulk Table Retrieval with the SNMP Limited Use 1187* DNS-RR New DNS RR Definitions Limited Use 1183* NTP-OSI NTP over OSI Remote Operations Limited Use 1165* MSP Message Send Protocol Limited Use 1159* EHF-MAIL Encoding Header Field for Mail Elective 1154 DMF-MAIL Digest Message Format for Mail Elective 1153 RDP Reliable Data Protocol Limited Use 908,1151 -------- Mapping between X.400(88) and RFC-822 Elective 1148 TCP-ACO TCP Alternate Checksum Option Not Recommended 1146 -------- Mapping full 822 to Restricted 822 Elective 1137 IP-DVMRP IP Distance Vector Multicast Routing Not Recommended 1075 TCP-LDP TCP Extensions for Long Delay Paths Limited Use 1072 IMAP2 Interactive Mail Access Protocol Limited Use 1176,1064 IMAP3 Interactive Mail Access Protocol Limited Use 1203* VMTP Versatile Message Transaction Protocol Elective 1045 COOKIE-JAR Authentication Scheme Not Recommended 1004 NETBLT Bulk Data Transfer Protocol Not Recommended 998 IRTP Internet Reliable Transaction Protocol Not Recommended 938 AUTH Authentication Service Not Recommended 931 LDP Loader Debugger Protocol Not Recommended 909 NVP-II Network Voice Protocol Limited Use ISI-memo PVP Packet Video Protocol Limited Use ISI-memo 6.7. Informational Protocols Protocol Name RFC ======= ===================================== ==== SNMP-TRAPS A Convention for Defining Traps for use with SNMP 1215* DAS Directory Assistance Service 1202* ------- FYI on the X Window System 1198* ODA Office Document Architecture 1197* MD4 MD4 Message Digest Algorithm 1186* LPDP Line Printer Daemon Protocol 1179* Internet Activities Board [Page 26] RFC 1200 IAB Standards April 1991 6.8. Historic Protocols Protocol Name Status RFC ======= ===================================== =============== ==== SGMP Simple Gateway Monitoring Protocol Not Recommended 1028 HEMS High Level Entity Management Protocol Not Recommended 1021 STATSRV Statistics Server Not Recommended 996 POP2 Post Office Protocol, Version 2 Not Recommended 937 RATP Reliable Asynchronous Transfer Protocol Not Recommended 916 THINWIRE Thinwire Protocol Not Recommended 914 HMP Host Monitoring Protocol Not Recommended 869 GGP Gateway Gateway Protocol Not Recommended 823 RTELNET Remote Telnet Service Not Recommended 818 CLOCK DCNET Time Server Protocol Not Recommended 778 MPM Internet Message Protocol Not Recommended 759 NETRJS Remote Job Service Not Recommended 740 NETED Network Standard Text Editor Not Recommended 569 RJE Remote Job Entry Not Recommended 407 XNET Cross Net Debugger Not Recommended IEN-158 NAMESERVER Host Name Server Protocol Not Recommended IEN-116 MUX Multiplexing Protocol Not Recommended IEN-90 GRAPHICS Graphics Protocol Not Recommended NIC-24308 7. Contacts 7.1. IAB, IETF, and IRTF Contacts 7.1.1. Internet Activities Board (IAB) Contact Contact: Bob Braden Executive Director of the IAB USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292-6695 1-213-822-1511 Braden@ISI.EDU Please send your comments about this list of protocols and especially about the Draft Standard Protocols to the Internet Activities Board care of Bob Braden, IAB Executive Director. Internet Activities Board [Page 27] RFC 1200 IAB Standards April 1991 7.1.2. Internet Engineering Task Force (IETF) Contact Contact: Phill Gross Chair of the IETF Corporation for National Research Initiatives (NRI) 1895 Preston White Drive, Suite 100 Reston, VA 22091 1-703-620-8990 PGross@NRI.RESTON.VA.US 7.1.3. Internet Research Task Force (IRTF) Contact Contact: David D. Clark Chair of the IRTF Massachusetts Institute of Technology Laboratory for Computer Science 545 Main Street Cambridge, MA 02139 1-617-253-6003 ddc@LCS.MIT.EDU 7.2. Internet Assigned Numbers Authority Contact Contact: Joyce K. Reynolds Internet Assigned Numbers Authority USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292-6695 1-213-822-1511 IANA@ISI.EDU The protocol standards are managed for the IAB by the Internet Assigned Numbers Authority. Please refer to the documents "Assigned Numbers" (RFC-1060) and "Official Internet Protocols" (RFC-1011) for further information Internet Activities Board [Page 28] RFC 1200 IAB Standards April 1991 about the status of protocol documents. There are two documents that summarize the requirements for host and gateways in the Internet, "Host Requirements" (RFC-1122 and RFC-1123) and "Gateway Requirements" (RFC-1009). How to obtain the most recent edition of this "IAB Official Protocol Standards" memo: The file "in-notes/iab-standards.txt" may be copied via FTP from the VENERA.ISI.EDU computer using the FTP username "anonymous" and FTP password "guest". 7.3. Request for Comments Editor Contact Contact: Jon Postel RFC Editor USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292-6695 1-213-822-1511 Postel@ISI.EDU Documents may be submitted via electronic mail to the RFC Editor for consideration for publication as RFC. If you are not familiar with the format or style requirements please request the "Instructions for RFC Authors". In general, the style of any recent RFC may be used as a guide. 7.4. The Network Information Center and Requests for Comments Distribution Contact Contact: DDN Network Information Center SRI International Room EJ291 333 Ravenswood Avenue Menlo Park, CA 94025 1-800-235-3155 1-415-859-3695 NIC@NIC.DDN.MIL Internet Activities Board [Page 29] RFC 1200 IAB Standards April 1991 The Network Information Center (NIC) provides many information services for the Internet community. Among them is maintaining the Requests for Comments (RFC) library. RFCs can be obtained via FTP from NIC.DDN.MIL, with the pathname RFC:RFCnnnn.TXT where "nnnn" refers to the number of the RFC. A list of all RFCs may be obtained by copying the file RFC:RFC-INDEX.TXT. Log in with FTP username ANONYMOUS and password GUEST. The NIC also provides an automatic mail service for those sites which cannot use FTP. Address the request to SERVICE@NIC.DDN.MIL and in the subject field of the message indicate the file name, as in "Subject: SEND RFC:RFCnnnn.TXT". Some RFCs are now available in PostScript, these may be obtained from the NIC in a similar fashion by substituting ".PS" for ".TXT". How to obtain the most recent edition of this "IAB Official Protocol Standards" memo: The file RFC:IAB-STANDARDS.TXT may be copied via FTP from the NIC.DDN.MIL computer following the same procedures used to obtain RFCs. 7.5. Other Sources for Requests for Comments 7.5.1. NSF Network Service Center (NNSC) NSF Network Service Center (NNSC) BBN Laboratories, Inc. 10 Moulton St. Cambridge, MA 02238 617-873-3400 NNSC@NNSC.NSF.NET 7.5.2. NSF Network Information Service (NIS) NSF Network Information Service Merit Computer Network University of Michigan 1075 Beal Avenue Ann Arbor, MI 48109 313-763-4897 INFO@NIS.NSF.NET Internet Activities Board [Page 30] RFC 1200 IAB Standards April 1991 7.5.3. CSNET Coordination and Information Center (CIC) CSNET Coordination and Information Center BBN Systems and Technologies Corporation 10 Moulton Street Cambridge, MA 02238 617-873-2777 INFO@SH.CS.NET 8. Security Considerations Security issues are not addressed in this memo. 9. Author's Address Jon Postel USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292 Phone: 213-822-1511 Fax: 213-823-6714 Email: Postel@ISI.EDU Internet Activities Board [Page 31]