RFC 2400: Internet Official Protocol Standards

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Reynolds"/> <meta name="citation_publication_date" content="September, 1998"/> <meta name="citation_title" content=" Internet Official Protocol Standards "/> <meta name="citation_doi" content="10.17487/RFC2400"/> <meta name="citation_issn" content="2070-1721"/> <meta name="citation_technical_report_number" content="rfc2400"/> <meta name="citation_pdf_url" content="https://www.rfc-editor.org/rfc/pdfrfc/rfc2400.txt.pdf"/> <title>RFC 2400: Internet Official Protocol Standards </title> <style type="text/css"> @media only screen and (min-width: 992px) and (max-width: 1199px) { body { font-size: 14pt; } div.content { width: 96ex; margin: 0 auto; } } @media only screen and (min-width: 768px) and (max-width: 991px) { body { font-size: 14pt; } div.content { width: 96ex; margin: 0 auto; } } @media only screen and (min-width: 480px) and (max-width: 767px) { body { font-size: 11pt; } div.content { width: 96ex; margin: 0 auto; } } @media only screen and (max-width: 479px) { body { font-size: 8pt; } div.content { width: 96ex; margin: 0 auto; } } @media only screen and (min-device-width : 375px) and (max-device-width : 667px) { body { font-size: 9.5pt; } div.content { width: 96ex; margin: 0; } } @media only screen and (min-device-width: 1200px) { body { font-size: 10pt; margin: 0 4em; } div.content { width: 96ex; margin: 0; } } h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 { font-weight: bold; /* line-height: 0pt; */ display: inline; white-space: pre; font-family: monospace; font-size: 1em; font-weight: bold; } pre { font-size: 1em; margin-top: 0px; margin-bottom: 0px; } .pre { white-space: pre; font-family: monospace; } .header{ font-weight: bold; } .newpage { page-break-before: always; } .invisible { text-decoration: none; color: white; } a.selflink { color: black; text-decoration: none; } @media print { body { font-family: monospace; font-size: 10.5pt; } h1, h2, h3, h4, h5, h6 { font-size: 1em; } a:link, a:visited { color: inherit; text-decoration: none; } .noprint { display: none; } } @media screen { .grey, .grey a:link, .grey a:visited { color: #777; } .docinfo { background-color: #EEE; } .top { border-top: 7px solid #EEE; } .bgwhite { background-color: white; } .bgred { background-color: #F44; } .bggrey { background-color: #666; } .bgbrown { background-color: #840; } .bgorange { background-color: #FA0; } .bgyellow { background-color: #EE0; } .bgmagenta{ background-color: #F4F; } .bgblue { background-color: #66F; } .bgcyan { background-color: #4DD; } .bggreen { background-color: #4F4; } .legend { font-size: 90%; } .cplate { font-size: 70%; border: solid grey 1px; } } </style>  <script type="text/javascript"> </script></head> <body> [<a href="https://www.rfc-editor.org" title="RFC Editor">RFC Home</a>] [<a href="/rfc/rfc2400.txt">TEXT</a>|<a href="/rfc/pdfrfc/rfc2400.txt.pdf">PDF</a>|<a href="/rfc/rfc2400.html">HTML</a>] [<a href='https://datatracker.ietf.org/doc/rfc2400' title='IETF Datatracker information for this document'>Tracker</a>] [<a href="https://datatracker.ietf.org/ipr/search/?rfc=2400&submit=rfc" title="IPR disclosures related to this document">IPR</a>] [<a href='https://www.rfc-editor.org/info/rfc2400' title='Info page'>Info page</a>] Obsoleted by: <a href="/rfc/rfc2500" target="_blank">2500</a> HISTORIC <pre>Network Working Group Internet Architecture Board Request for Comments: 2400 J. Postel Obsoletes: <a href="./rfc2300">2300</a>, <a href="./rfc2200">2200</a>, <a href="./rfc2000">2000</a>, <a href="./rfc1920">1920</a>, <a href="./rfc1880">1880</a>, J. Reynolds <a href="./rfc1800">1800</a>, <a href="./rfc1780">1780</a>, <a href="./rfc1720">1720</a>, <a href="./rfc1610">1610</a>, <a href="./rfc1600">1600</a>, <a href="./rfc1540">1540</a>, <a href="./rfc1500">1500</a>, <a href="./rfc1410">1410</a>, Editors 1360, 1280, 1250, 1200, 1140, 1130, 1100, 1083 September 1998 STD: 1 Category: Standards Track INTERNET 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 Architecture Board (IAB). This memo is an Internet Standard. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (1998). All Rights Reserved. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-2">2</a> <a href="#section-1">1</a>. The Standardization Process . . . . . . . . . . . . . . . <a href="#page-3">3</a> <a href="#section-2">2</a>. The Request for Comments Documents . . . . . . . . . . . . <a href="#page-5">5</a> <a href="#section-3">3</a>. Other Reference Documents . . . . . . . . . . . . . . . . <a href="#page-6">6</a> <a href="#section-3.1">3.1</a>. Assigned Numbers . . . . . . . . . . . . . . . . . . . . <a href="#page-6">6</a> <a href="#section-3.2">3.2</a>. Gateway Requirements . . . . . . . . . . . . . . . . . . <a href="#page-6">6</a> <a href="#section-3.3">3.3</a>. Host Requirements . . . . . . . . . . . . . . . . . . . <a href="#page-6">6</a> <a href="#section-3.4">3.4</a>. The MIL-STD Documents . . . . . . . . . . . . . . . . . <a href="#page-6">6</a> <a href="#section-4">4</a>. Explanation of Terms . . . . . . . . . . . . . . . . . . . <a href="#page-7">7</a> <a href="#section-4.1">4.1</a>. Definitions of Protocol State (Maturity Level) . . . . . <a href="#page-8">8</a> <a href="#section-4.1.1">4.1.1</a>. Standard Protocol . . . . . . . . . . . . . . . . . . <a href="#page-8">8</a> <a href="#section-4.1.2">4.1.2</a>. Draft Standard Protocol . . . . . . . . . . . . . . . <a href="#page-8">8</a> <a href="#section-4.1.3">4.1.3</a>. Proposed Standard Protocol . . . . . . . . . . . . . . <a href="#page-8">8</a> <a href="#section-4.1.4">4.1.4</a>. Experimental Protocol . . . . . . . . . . . . . . . . <a href="#page-8">8</a> <a href="#section-4.1.5">4.1.5</a>. Informational Protocol . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.1.6">4.1.6</a>. Historic Protocol . . . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.2">4.2</a>. Definitions of Protocol Status (Requirement Level) . . . <a href="#page-9">9</a> <a href="#section-4.2.1">4.2.1</a>. Required Protocol . . . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.2.2">4.2.2</a>. Recommended Protocol . . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.2.3">4.2.3</a>. Elective Protocol . . . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.2.4">4.2.4</a>. Limited Use Protocol . . . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-4.2.5">4.2.5</a>. Not Recommended Protocol . . . . . . . . . . . . . . . <a href="#page-9">9</a> <a href="#section-5">5</a>. The Standards Track . . . . . . . . . . . . . . . . . . . <a href="#page-10">10</a> Internet Architecture Board Standards Track [Page 1]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a href="#section-5.1">5.1</a>. The RFC Processing Decision Table . . . . . . . . . . . <a href="#page-10">10</a> <a href="#section-5.2">5.2</a>. The Standards Track Diagram . . . . . . . . . . . . . . <a href="#page-11">11</a> <a href="#section-6">6</a>. The Protocols . . . . . . . . . . . . . . . . . . . . . . <a href="#page-13">13</a> <a href="#section-6.1">6.1</a>. Recent Changes . . . . . . . . . . . . . . . . . . . . . <a href="#page-13">13</a> <a href="#section-6.1.1">6.1.1</a>. New RFCs . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-13">13</a> <a href="#section-6.1.2">6.1.2</a>. Other Changes . . . . . . . . . . . . . . . . . . . . <a href="#page-20">20</a> <a href="#section-6.2">6.2</a>. Standard Protocols . . . . . . . . . . . . . . . . . . . <a href="#page-21">21</a> <a href="#section-6.3">6.3</a>. Network-Specific Standard Protocols . . . . . . . . . . <a href="#page-23">23</a> <a href="#section-6.4">6.4</a>. Draft Standard Protocols . . . . . . . . . . . . . . . . <a href="#page-24">24</a> <a href="#section-6.5">6.5</a>. Proposed Standard Protocols . . . . . . . . . . . . . . <a href="#page-26">26</a> <a href="#section-6.6">6.6</a>. Telnet Options . . . . . . . . . . . . . . . . . . . . . <a href="#page-33">33</a> <a href="#section-6.7">6.7</a>. Experimental Protocols . . . . . . . . . . . . . . . . . <a href="#page-35">35</a> <a href="#section-6.8">6.8</a>. Informational Protocols . . . . . . . . . . . . . . . . <a href="#page-38">38</a> <a href="#section-6.9">6.9</a>. Historic Protocols . . . . . . . . . . . . . . . . . . . <a href="#page-40">40</a> <a href="#section-6.10">6.10</a> Obsolete Protocols . . . . . . . . . . . . . . . . . . . <a href="#page-41">41</a> <a href="#section-7">7</a>. Contacts . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-42">42</a> <a href="#section-7.1">7.1</a>. IAB, IETF, and IRTF Contacts . . . . . . . . . . . . . . <a href="#page-42">42</a> <a href="#section-7.1.1">7.1.1</a>. Internet Architecture Board (IAB) Contact . . . . . . <a href="#page-42">42</a> <a href="#section-7.1.2">7.1.2</a>. Internet Engineering Task Force (IETF) Contact . . . . <a href="#page-42">42</a> <a href="#section-7.1.3">7.1.3</a>. Internet Research Task Force (IRTF) Contact . . . . . <a href="#page-43">43</a> <a href="#section-7.2">7.2</a>. Internet Assigned Numbers Authority (IANA) Contact . . . <a href="#page-44">44</a> <a href="#section-7.3">7.3</a>. Request for Comments Editor Contact . . . . . . . . . . <a href="#page-45">45</a> <a href="#section-7.4">7.4</a>. Network Information Center Contact . . . . . . . . . . . <a href="#page-45">45</a> <a href="#section-7.5">7.5</a>. Sources for Requests for Comments . . . . . . . . . . . <a href="#page-46">46</a> <a href="#section-8">8</a>. Security Considerations . . . . . . . . . . . . . . . . . <a href="#page-46">46</a> <a href="#section-9">9</a>. Author's Address . . . . . . . . . . . . . . . . . . . . . <a href="#page-46">46</a> <a href="#section-10">10</a>. Full Copyright Statement . . . . . . . . . . . . . . . . . <a href="#page-47">47</a> Introduction A discussion of the standardization process and the RFC document series is presented first, followed by an explanation of the terms. Sections <a href="#section-6.2">6.2</a> - <a href="#section-6.10">6.10</a> contain the lists of protocols in each stage of standardization. Finally, there are pointers to references and contacts for further information. This memo is intended to be issued every one hundred RFCs; please be sure the copy you are reading is current. Current copies may be obtained from the Requests for Comments Editor (RFC-EDITOR) or from the Internet Assigned Numbers Authority (IANA) (see the contact information at the end of this memo). See <a href="#section-6.1">Section 6.1</a> for a description of recent changes. In the official lists in sections <a href="#section-6.2">6.2</a> - <a href="#section-6.10">6.10</a>, an asterisk (*) next to a protocol denotes that it is new to this document or has been moved from one protocol level to another, or differs from the previous edition of this document. Internet Architecture Board Standards Track [Page 2]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-1" href="#section-1">1</a>. The Standardization Process The Internet Architecture Board maintains this list of documents that define standards for the Internet protocol suite. See <a href="./rfc1601">RFC-1601</a> for the charter of the IAB and <a href="./rfc1160">RFC-1160</a> 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). Each of these groups has a steering group called the IESG and IRSG, respectively. The IETF develops these 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 definitive description of the Internet standards process is found in <a href="./rfc2026">RFC-2026</a>. The majority of Internet protocol development and standardization activity takes place in the working groups of the IETF. Protocols which are to become standards in the Internet go through a series of states or maturity levels (proposed standard, draft standard, and standard) involving increasing amounts of scrutiny and testing. When a protocol completes this process it is assigned a STD number (see <a href="./rfc1311">RFC-1311</a>). At each step, the Internet Engineering Steering Group (IESG) of the IETF must make a recommendation for advancement of the protocol. To allow time for the Internet community to consider and react to standardization proposals, a minimum delay of 6 months before a proposed standard can be advanced to a draft standard and 4 months before a draft standard can be promoted to standard. It is general 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 a special review committee may be appointed consisting of experts from the IETF, IRTF and the IAB with the purpose of recommending an explicit action. 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. Internet Architecture Board Standards Track [Page 3]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 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 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 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 the documentation of such experimental work in the RFC series is encouraged, 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. A few protocols have achieved widespread implementation without the approval of the IESG. For example, some vendor protocols have become very important to the Internet community even though they have not been recommended by the IESG. However, the IAB strongly recommends that the standards process be used in the evolution of the protocol suite to maximize interoperability (and to prevent incompatible protocol requirements from arising). The use of the terms "standard", "draft standard", and "proposed standard" are reserved in any RFC or other publication of Internet protocols to only those protocols which the IESG 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 <a href="#section-4.2">Section 4.2</a>. When a protocol is on the standards track, that is in the proposed standard, draft standard, or standard state (see <a href="#section-5">Section 5</a>), the status shown in <a href="#section-6">Section 6</a> is the current status. Internet Architecture Board Standards Track [Page 4]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 Few protocols are required to be implemented in all systems; this is because there is such a variety of possible systems, for example, gateways, routers, 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, this document contains an additional status paragraph (an applicability statement). In addition, more detailed status information may be contained in separate requirements documents (see <a href="#section-3">Section 3</a>). <a class="selflink" id="section-2" href="#section-2">2</a>. 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, and see <a href="./rfc2223">RFC 2223</a>). 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 the IESG. 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 <a href="#section-5.1">Section</a> <a href="#section-5.1">5.1</a> 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 Internet Architecture Board Standards Track [Page 5]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 is important to verify that you have the most recent RFC on a particular protocol. This "Internet 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 RFC-EDITOR, and a number of other sites. For more information about obtaining RFCs, see Sections <a href="#section-7.4">7.4</a> and 7.5. <a class="selflink" id="section-3" href="#section-3">3</a>. Other Reference Documents There are three other reference documents of interest in checking the current status of protocol specifications and standardization. These are the Assigned Numbers, 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 <a href="#section-3.4">Section 3.4</a>. <a class="selflink" id="section-3.1" href="#section-3.1">3.1</a>. Assigned Numbers The "Assigned Numbers" 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 <a href="./rfc1700">RFC-1700</a>. <a class="selflink" id="section-3.2" href="#section-3.2">3.2</a>. Requirements for IP Version 4 Routers This document reviews the specifications that apply to gateways and supplies guidance and clarification for any ambiguities. Requirements for IP Version 4 Routers is <a href="./rfc1812">RFC-1812</a>. <a class="selflink" id="section-3.3" href="#section-3.3">3.3</a>. 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 <a href="./rfc1122">RFC-1122</a> and <a href="./rfc1123">RFC-1123</a>. <a class="selflink" id="section-3.4" href="#section-3.4">3.4</a>. The MIL-STD Documents The DoD MIL-STD Internet specifications are out of date and have been discontinued. The DoD's Joint Technical Architecture (JTA) lists the current set of IETF STDs and RFCs that the DoD intends to use in all new and upgraded Command, Control, Communications, Computers, and Intelligence (C4I) acquisitions. A copy of the JTA can be obtained Internet Architecture Board Standards Track [Page 6]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 from <a href="http://www-jta.itsi.disa.mil">http://www-jta.itsi.disa.mil</a>. <a class="selflink" id="section-4" href="#section-4">4</a>. Explanation of Terms There are two independent categorization of protocols. The first is the "maturity level" or STATE of standardization, one of "standard", "draft standard", "proposed standard", "experimental", "informational" or "historic". The second is the "requirement level" or 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. When a protocol is advanced to proposed standard or draft standard, it is labeled with a current status. 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, limited use) 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 | | | A +-----+-----+-----+-----+-----+ Info | | | | | | T +-----+-----+-----+-----+-----+ Expr | | | | XXX | | E +-----+-----+-----+-----+-----+ Hist | | | | | 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. Internet Architecture Board Standards Track [Page 7]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-4.1" href="#section-4.1">4.1</a>. Definitions of Protocol State Every protocol listed in this document is assigned to a "maturity level" or STATE of standardization: "standard", "draft standard", "proposed standard", "experimental", or "historic". 4.1.1. Standard Protocol The IESG has established this as an official standard protocol for the Internet. These protocols are assigned STD numbers (see <a href="./rfc1311">RFC-</a> <a href="./rfc1311">1311</a>). 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. 4.1.2. Draft Standard Protocol The IESG 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 IESG. 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 IESG 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. Internet Architecture Board Standards Track [Page 8]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 4.1.5. Informational Protocol Protocols developed by other standard organizations, or vendors, or that are for other reasons outside the purview of the IESG, may be published as RFCs for the convenience of the Internet community as informational protocols. 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. <a class="selflink" id="section-4.2" href="#section-4.2">4.2</a>. Definitions of Protocol Status This document lists a "requirement level" or 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. Internet Architecture Board Standards Track [Page 9]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-5" href="#section-5">5</a>. The Standards Track This section discusses in more detail the procedures used by the RFC Editor and the IESG in making decisions about the labeling and publishing of protocols as standards. <a class="selflink" id="section-5.1" href="#section-5.1">5.1</a>. 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. +==========================================================+ |**************| S O U R C E | +==========================================================+ | Desired | IAB | IESG | IRSG | Other | | Status | | | | | +==========================================================+ | | | | | | | Standard | Bogus | Publish | Bogus | Bogus | | or | (2) | (1) | (2) | (2) | | Draft | | | | | | Standard | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | | Refer | Publish | Refer | Refer | | Proposed | (3) | (1) | (3) | (3) | | Standard | | | | | | | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | | Notify | Publish | Notify | Notify | | Experimental | (4) | (1) | (4) | (4) | | Protocol | | | | | | | | | | | +--------------+----------+----------+----------+----------+ | | | | | | | Information | Publish | Publish |Discretion|Discretion| | or Opinion | (1) | (1) | (5) | (5) | | Paper | | | | | | | | | | | +==========================================================+ (1) Publish. (2) Bogus. Inform the source of the rules. RFCs specifying Standard, or Draft Standard must come from the IESG, only. Internet Architecture Board Standards Track [Page 10]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 (3) Refer to an Area Director for review by a WG. Expect to see the document again only after approval by the IESG. (4) Notify both the IESG and IRSG. If no concerns are raised in two weeks then do Discretion (5), else RFC Editor to resolve the concerns or do Refer (3). (5) RFC Editor's discretion. The RFC Editor decides if a review is needed and if so by whom. RFC Editor decides to publish or 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 concerns in response to notifications (4) to the RFC Editor. Documents from Area Directors or Working Group Chairs may be considered in the same way as documents from "other". <a class="selflink" id="section-5.2" href="#section-5.2">5.2</a>. 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 change 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 six months for proposed standard, minimum four 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 may move from one state to another along the track only on the recommendation of the IESG. That is, it takes action by the IESG 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, requirement level or applicability (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 Architecture Board Standards Track [Page 11]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 | +<----------------------------------------------+ | ^ 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 IESG and only after the protocol has been proposed standard (1) for at least six months. The transition from draft standard (2) to standard (3) can only be by action of the IESG and only after the protocol has been draft standard (2) for at least four 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 IESG action. Sometimes one protocol is replaced by another and thus becomes historic, or 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 Architecture Board Standards Track [Page 12]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6" href="#section-6">6</a>. The Protocols Sub<a href="#section-6.1">section 6.1</a> lists recent RFCs and other changes. Subsections <a href="#section-6.2">6.2</a> - 6.10 list the standards in groups by protocol state. <a class="selflink" id="section-6.1" href="#section-6.1">6.1</a>. Recent Changes <a class="selflink" id="section-6.1.1" href="#section-6.1.1">6.1.1</a>. New RFCs: 2428 - FTP Extensions for IPv6 and NATs A Proposed Standard protocol. 2427 - Multiprotocol Interconnect over Frame Relay A Standard protocol. 2426 - vCard MIME Directory Profile A Proposed Standard protocol. 2425 - A MIME Content-Type for Directory Information A Proposed Standard protocol. 2424 - Content Duration MIME Header Definition A Proposed Standard protocol. 2423 - VPIM Voice Message MIME Sub-type Registration A Proposed Standard protocol. 2422 - Toll Quality Voice - 32 kbit/s ADPCM MIME Sub-type Registration A Proposed Standard protocol. 2421 - Voice Profile for Internet Mail - version 2 A Proposed Standard protocol. 2420 - The PPP Triple-DES Encryption Protocol (3DESE) A Proposed Standard protocol. Internet Architecture Board Standards Track [Page 13]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2419 - The PPP DES Encryption Protocol, Version 2 (DESE-bis) A Proposed Standard protocol. 2418 - IETF Working Group Guidelines and Procedures This is a Best Current Practices document and does not specify any level of standard. 2417 - Definitions of Managed Objects for Multicast over UNI 3.0/3.1 based ATM Network A Proposed Standard protocol. 2416 - When TCP Starts Up With Four Packets Into Only Three Buffers This is an information document and does not specify any level of standard. 2415 - Simulation Studies of Increased Initial TCP Window Size This is an information document and does not specify any level of standard. 2414 - Increasing TCP's Initial Window An Experimental protocol. 2413 - Dublin Core Metadata for Resource Discovery This is an information document and does not specify any level of standard. 2412 - Not yet issued. 2411 - Not yet issued. 2410 - Not yet issued. 2409 - Not yet issued. 2408 - Not yet issued. 2407 - Not yet issued. Internet Architecture Board Standards Track [Page 14]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2406 - Not yet issued. 2405 - Not yet issued. 2404 - Not yet issued. 2403 - Not yet issued. 2402 - Not yet issued. 2401 - Not yet issued. 2400 - This memo. 2399 - Not yet issued. 2398 - Some Testing Tools for TCP Implementors This is an information document and does not specify any level of standard. 2397 - The "data" URL scheme A Proposed Standard protocol. 2396 - Uniform Resource Identifiers (URI): Generic Syntax A Draft Standard protocol. 2395 - Not yet issued. 2394 - Not yet issued. 2393 - Not yet issued. 2392 - Content-ID and Message-ID Uniform Resource Locators A Proposed Standard protocol. 2391 - Load Sharing using IP Network Address Translation (LSNAT) This is an information document and does not specify any level of standard. 2390 - Inverse Address Resolution Protocol A Draft Standard protocol. Internet Architecture Board Standards Track [Page 15]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2389 - Feature negotiation mechanism for the File Transfer Protocol A Proposed Standard protocol. 2388 - Returning Values from Forms: multipart/form-data A Proposed Standard protocol. 2387 - The MIME Multipart/Related Content-type A Proposed Standard protocol. 2386 - A Framework for QoS-based Routing in the Internet This is an information document and does not specify any level of standard. 2385 - Protection of BGP Sessions via the TCP MD5 Signature Option A Proposed Standard protocol. 2384 - POP URL Scheme A Proposed Standard protocol. 2383 - ST2+ over ATM Protocol Specification - UNI 3.1 Version This is an information document and does not specify any level of standard. 2382 - A Framework for Integrated Services and RSVP over ATM This is an information document and does not specify any level of standard. 2381 - Interoperation of Controlled-Load Service and Guaranteed Service with ATM A Proposed Standard protocol. 2380 - RSVP over ATM Implementation Requirements A Proposed Standard protocol. Internet Architecture Board Standards Track [Page 16]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2379 - RSVP over ATM Implementation Guidelines This is a Best Current Practices document and does not specify any level of standard. 2378 - Not yet issued. 2377 - Not yet issued. 2376 - XML Media Types This is an information document and does not specify any level of standard. 2375 - IPv6 Multicast Address Assignments This is an information document and does not specify any level of standard. 2374 - An IPv6 Aggregatable Global Unicast Address Format A Proposed Standard protocol. 2373 - IP Version 6 Addressing Architecture A Proposed Standard protocol. 2372 - Transaction Internet Protocol - Requirements and Supplemental Information This is an information document and does not specify any level of standard. 2371 - Transaction Internet Protocol Version 3.0 A Proposed Standard protocol. 2370 - The OSPF Opaque LSA Option A Proposed Standard protocol. 2369 - The Use of URLs as Meta-Syntax for Core Mail List Commands and their Transport through Message Header Field A Proposed Standard protocol. Internet Architecture Board Standards Track [Page 17]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2368 - The mailto URL scheme A Proposed Standard protocol. 2367 - PF_KEY Key Management API, Version 2 This is an information document and does not specify any level of standard. 2366 - Definitions of Managed Objects for Multicast over UNI 3.0/3.1 based ATM Networks A Proposed Standard protocol. 2365 - Administratively Scoped IP Multicast This is a Best Current Practices document and does not specify any level of standard. 2364 - PPP Over AAL A Proposed Standard protocol. 2363 - PPP Over FUNI A Proposed Standard protocol. 2362 - Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification An Experimental protocol. 2361 - WAVE and AVI Codec Registries This is an information document and does not specify any level of standard. 2360 - Guide for Internet Standards Writers This is a Best Current Practices document and does not specify any level of standard. 2359 - IMAP4 UIDPLUS extension A Proposed Standard protocol. Internet Architecture Board Standards Track [Page 18]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 2358 - Definitions of Managed Objects for the Ethernet-like Interface Types A Proposed Standard protocol. 2357 - IETF Criteria for Evaluating Reliable Multicast Transport and Application Protocols This is an information document and does not specify any level of standard. 2356 - Sun's SKIP Firewall Traversal for Mobile IP This is an information document and does not specify any level of standard. 2355 - TN3270 Enhancements A Draft Standard protocol. 2354 - Options for Repair of Streaming Media This is an information document and does not specify any level of standard. 2353 - APPN/HPR in IP Networks APPN Implementers' Workshop Closed Pages Document This is an information document and does not specify any level of standard. 2350 - Expectations for Computer Security Incident Response This is a Best Current Practices document and does not specify any level of standard. 2340 - Nortel's Virtual Network Switching (VNS) Overview This is an information document and does not specify any level of standard. 2336 - Classical IP and ARP over ATM to NHRP Transition This is an information document and does not specify any level of standard. Internet Architecture Board Standards Track [Page 19]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.1.2" href="#section-6.1.2">6.1.2</a>. Other Changes: The following are changes to protocols listed in the previous edition. 2073 - An IPv6 Provider-Based Unicast Address Format Moved to Historic. 1884 - IP Version 6 Addressing Architecture Moved to Historic. 0658 - Telnet Output Linefeed Disposition Moved to Historic. 0657 - Telnet Output Vertical Tab Disposition Option Moved to Historic. 0656 - Telnet Output Vertical Tabstops Option Moved to Historic. 0655 - Telnet Output Formfeed Disposition Option Moved to Historic. 0654 - Telnet Output Horizontal Tab Disposition Option Moved to Historic. 0653 - Telnet Output Horizontal Tabstops Option Moved to Historic. 0652 - Telnet Output Carriage-Return Disposition Option Moved to Historic. Internet Architecture Board Standards Track [Page 20]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.2" href="#section-6.2">6.2</a>. Standard Protocols Protocol Name Status RFC STD * ======== ===================================== ======== ==== === = -------- Internet Official Protocol Standards Req 2400 1 -------- Assigned Numbers Req 1700 2 -------- Host Requirements - Communications Req 1122 3 -------- Host Requirements - Applications Req 1123 3 IP Internet Protocol Req 791 5 as amended by:-------- -------- IP Subnet Extension Req 950 5 -------- IP Broadcast Datagrams Req 919 5 -------- IP Broadcast Datagrams with Subnets Req 922 5 ICMP Internet Control Message Protocol Req 792 5 IGMP Internet Group Multicast Protocol Rec 1112 5 UDP User Datagram Protocol Rec 768 6 TCP Transmission Control Protocol Rec 793 7 TELNET Telnet Protocol Rec 854,855 8 FTP File Transfer Protocol Rec 959 9 SMTP Simple Mail Transfer Protocol Rec 821 10 SMTP-SIZE SMTP Service Ext for Message Size Rec 1870 10 SMTP-EXT SMTP Service Extensions Rec 1869 10 MAIL Format of Electronic Mail Messages Rec 822 11 CONTENT Content Type Header Field Rec 1049 11 NTPV2 Network Time Protocol (Version 2) Rec 1119 12 DOMAIN Domain Name System Rec 1034,1035 13 DNS-MX Mail Routing and the Domain System Rec 974 14 SNMP Simple Network Management Protocol Rec 1157 15 SMI Structure of Management Information Rec 1155 16 Concise-MIB Concise MIB Definitions Rec 1212 16 MIB-II Management Information Base-II Rec 1213 17 NETBIOS NetBIOS Service Protocols Ele 1001,1002 19 ECHO Echo Protocol Rec 862 20 DISCARD Discard Protocol Ele 863 21 CHARGEN Character Generator Protocol Ele 864 22 QUOTE Quote of the Day Protocol Ele 865 23 USERS Active Users Protocol Ele 866 24 DAYTIME Daytime Protocol Ele 867 25 TIME Time Server Protocol Ele 868 26 TFTP Trivial File Transfer Protocol Ele 1350 33 TP-TCP ISO Transport Service on top of the TCP Ele 1006 35 ETHER-MIB Ethernet MIB Ele 1643 50 PPP Point-to-Point Protocol (PPP) Ele 1661 51 PPP-HDLC PPP in HDLC Framing Ele 1662 51 IP-SMDS IP Datagrams over the SMDS Service Ele 1209 52 POP3 Post Office Protocol, Version 3 Ele 1939 53 OSPF2 Open Shortest Path First Routing V2 Ele 2328 54 IP-FR Multiprotocol over Frame Relay Ele 2427 55* Internet Architecture Board Standards Track [Page 21]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Applicability Statements: IGMP -- The Internet Architecture 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 <a href="./rfc1112">RFC-1112</a>; however, multicast-routing gateways are in the experimental stage and are not widely available. An Internet host should support all of <a href="./rfc1112">RFC-1112</a>, except for the IGMP protocol itself which is optional; see <a href="./rfc1122">RFC-1122</a> for more details. Even without IGMP, implementation of <a href="./rfc1112">RFC-1112</a> will provide an important advance: IP-layer access to local network multicast addressing. It is expected that IGMP will become recommended for all hosts and gateways at some future date. SMI, MIB-II SNMP -- The Internet Architecture Board recommends that all IP and TCP implementations be network manageable. At the current time, this implies implementation of the Internet MIB-II (<a href="./rfc1213">RFC-1213</a>), and at least the recommended management protocol SNMP (<a href="./rfc1157">RFC-1157</a>). 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 devpeloping 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. <a href="./rfc1006">RFC-1006</a> 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 <a href="./rfc1006">RFC-</a> <a href="./rfc1006">1006</a>. 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". OSPF -- <a href="./rfc1370">RFC 1370</a> is an applicability statement for OSPF. Internet Architecture Board Standards Track [Page 22]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.3" href="#section-6.3">6.3</a>. Network-Specific Standard Protocols All Network-Specific Standards have Elective status. Protocol Name State RFC STD * ======== ===================================== ===== ===== === = IP-ATM Classical IP and ARP over ATM Prop 2225 ATM-ENCAP Multiprotocol Encapsulation over ATM Prop 1483 IP-TR-MC IP Multicast over Token-Ring LANs Prop 1469 IP-FDDI Transmission of IP and ARP over FDDI Net Std 1390 36 IP-X.25 X.25 and ISDN in the Packet Mode Draft 1356 ARP Address Resolution Protocol Std 826 37 RARP A Reverse Address Resolution Protocol Std 903 38 IP-ARPA Internet Protocol on ARPANET Std BBN1822 39 IP-WB Internet Protocol on Wideband Network Std 907 40 IP-E Internet Protocol on Ethernet Networks Std 894 41 IP-EE Internet Protocol on Exp. Ethernet Nets Std 895 42 IP-IEEE Internet Protocol on IEEE 802 Std 1042 43 IP-DC Internet Protocol on DC Networks Std 891 44 IP-HC Internet Protocol on Hyperchannel Std 1044 45 IP-ARC Transmitting IP Traffic over ARCNET Nets Std 1201 46 IP-SLIP Transmission of IP over Serial Lines Std 1055 47 IP-NETBIOS Transmission of IP over NETBIOS Std 1088 48 IP-IPX Transmission of 802.2 over IPX Networks Std 1132 49 IP-HIPPI IP over HIPPI Draft 2067 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Applicability Statements: 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 Architecture Board Standards Track [Page 23]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.4" href="#section-6.4">6.4</a>. Draft Standard Protocols Protocol Name Status RFC ======== ===================================== ============== ===== URI-GEN URI: Generic Syntax Elective 2396* IARP Inverse Address Resolution Protocol Elective 2390* TFTP-Opt TFTP Options Elective 2349 TFTP-Blk TFTP Blocksize Option Elective 2348 TFTP-Ext TFTP Option Extension Elective 2347 ONE-PASS One-Time Password System Elective 2289 SMTP-Pipe SMTP Serv. Ext. for Command Pipelining Elective 2197 DHCP-BOOTP DHCP Options and BOOTP Extensions Recommended 2132 DHCP Dynamic Host Configuration Protocol Elective 2131 FRAME-MIB Management Information Base for Frame Elective 2115 ------- Clarifications and Extensions BOOTP Elective 1542 DHCP-BOOTP Interoperation Between DHCP and BOOTP Elective 1534 BOOTP Bootstrap Protocol Recommended 951,2132 MIME-CONF MIME Conformance Criteria Elective 2049 MIME-MSG MIME Msg Header Ext for Non-ASCII Elective 2047 MIME-MEDIA MIME Media Types Elective 2046 MIME Multipurpose Internet Mail Extensions Elective 2045 PPP-CHAP PPP Challenge Handshake Authentication Elective 1994 PPP-MP PPP Multilink Protocol Elective 1990 PPP-LINK PPP Link Quality Monitoring Elective 1989 COEX-MIB Coexistence between SNMPV1 & SNMPV2 Elective 1908 SNMPv2-MIB MIB for SNMPv2 Elective 1907 TRANS-MIB Transport Mappings for SNMPv2 Elective 1906 OPS-MIB Protocol Operations for SNMPv2 Elective 1905 CONF-MIB Conformance Statements for SNMPv2 Elective 1904 CONV-MIB Textual Conventions for SNMPv2 Elective 1903 SMIV2 SMI for SNMPv2 Elective 1902 CON-MD5 Content-MD5 Header Field Elective 1864 OSPF-MIB OSPF Version 2 MIB Elective 1850 STR-REP String Representation ... Elective 1779 X.500syn X.500 String Representation ... Elective 1778 X.500lite X.500 Lightweight ... Elective 1777 BGP-4-APP Application of BGP-4 Elective 1772 BGP-4 Border Gateway Protocol 4 Elective 1771 PPP-DNCP PPP DECnet Phase IV Control Protocol Elective 1762 RMON-MIB Remote Network Monitoring MIB Elective 1757 802.5-MIB IEEE 802.5 Token Ring MIB Elective 1748 RIP2-MIB RIP Version 2 MIB Extension Elective 1724 RIP2 RIP Version 2-Carrying Additional Info. Elective 1723 RIP2-APP RIP Version 2 Protocol App. Statement Elective 1722 SIP-MIB SIP Interface Type MIB Elective 1694 ------- Def Man Objs Parallel-printer-like Elective 1660 ------- Def Man Objs RS-232-like Elective 1659 ------- Def Man Objs Character Stream Elective 1658 Internet Architecture Board Standards Track [Page 24]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 BGP-4-MIB BGP-4 MIB Elective 1657 SMTP-8BIT SMTP Service Ext or 8bit-MIMEtransport Elective 1652 OSI-NSAP Guidelines for OSI NSAP Allocation Elective 1629 ISO-TS-ECHO Echo for ISO-8473 Elective 1575 DECNET-MIB DECNET MIB Elective 1559 BRIDGE-MIB BRIDGE-MIB Elective 1493 NTPV3 Network Time Protocol (Version 3) Elective 1305 IP-MTU Path MTU Discovery Elective 1191 FINGER Finger Protocol Elective 1288 NICNAME WhoIs Protocol Elective 954 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Applicability Statements: 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-specifics standard protocol state in the future. Internet Architecture Board Standards Track [Page 25]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.5" href="#section-6.5">6.5</a>. Proposed Standard Protocols Protocol Name Status RFC ======== ===================================== ============== ===== -------- FTP Extensions for IPv6 and NATs Elective 2428* MIME-VCARD vCard MIME Directory Profile Elective 2426* TXT-DIR MIME Content-Type for Directory Info Elective 2425* CONT-DUR Content-Duration MIME Header Elective 2424* MIME-VPIM VPIM Voice Message Elective 2423* MIME-ADPCM Toll Quality Voice - 32 kbit/s ADPC Elective 2422* MIME-VP2 Voice Profile for Internet Mail V2 Elective 2421* -------- Multicast/UNI 3.0/3.1 based ATM MIB Elective 2417* DATA-URL "data" URL scheme Elective 2397* CIDMID-URL Content-ID and Message-ID URLs Elective 2392* FTP-FNEGO Feature negotiation mechanism for FTP Elective 2389* -------- MIME Multipart/form-data Elective 2388* MIME-RELAT MIME Multipart/Related Content-type Elective 2387* -------- Protection of BGP Sessions via TCP MD5 Elective 2385* POP-URL POP URL Scheme Elective 2384* -------- Interoperation of CLS and GS with ATM Elective 2381* -------- RSVP over ATM Imple. Requirements Elective 2380* -------- IPv6 Aggreg. Global Unicast Addr. Format Elective 2374* -------- IPv6 Addressing Architecture Elective 2373* TIPV3 Transaction Internet Protocol V3 Elective 2371* OSPF-LSA OSPF Opaque LSA Option Elective 2370* -------- Use of URLs as Meta-Syntax... Elective 2369* URLMAILTO mailto URL scheme Elective 2368* PPP-AAL PPP Over AAL Elective 2364* PPP-FUNI PPP Over FUNI Elective 2363* IMAP4UIDPL IMAP4 UIDPLUS Extension Elective 2359* -------- Ethernet-like Interface Types MIB Elective 2358* MOBILIPREV Reverse Tunneling for Mobile IP Elective 2344 IMAP4NAME IMAP4 Namespace Elective 2342 VRRP Virtual Router Redundancy Protocol Elective 2338 NHRP-SCSP Distributed NHRP Service Using SCSP Elective 2335 SCSP Server Cache Synchronization Protocol Elective 2334 NHRP-APP NHRP Protocol Applicability Statement Elective 2333 NHRP NBMA Next Hop Resolution Protocol Elective 2332 UNI-SIG ATM Sig Support (IPOA) UNI Signalling Elective 2331 SDP Session Description Protocol Elective 2327 RTSP Real Time Streaming Protocol Elective 2326 IPOA-MIB Classical IP and ARP Over ATM MIB Elective 2320 DNS-NCACHE Negative Caching of DNS Queries Elective 2308 SMFAX-IM Simple Mode of FAX Using Internet Mail Elective 2305 MINFAX-IM Minimal FAX addr format in Internet Mail Elective 2304 MIN-PSTN Min. PSTN addr format in Internet Mail Elective 2303 TIFF Tag Image File Format Elective 2302 FFIF File Format for Internet Fax Elective 2301 Internet Architecture Board Standards Track [Page 26]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 EMF-MDN Extensible Message Format for MDN Elective 2298 OR-ADD O/R Address hierarchy in X.500 Elective 2294 SUBTABLE Tables and Subtrees in X.500 Elective 2293 -------- Mobile-IPv4 Config Opt for PPP IPCP Elective 2290 SLM-APP System-Level Managed Objects for Apps Elective 2287 PPP-EAP PPP Extensible Authentication Protocol Elective 2284 MEXT-BGP4 Multiprotocol Extensions for BGP-4 Elective 2283 RPSL Routing Policy Specification Language Elective 2280 UTF-8 UTF-8 transformation format of ISO 10646 Elective 2279 VACM-SNMP View-based Access Control Model for SMMP Elective 2275 USM-SNMPV3 User-based Security Model for SNMPv3 Elective 2274 SNMPV3-APP SNMPv3 Applications Elective 2273 MPD-SNMP Message Processing & Dispatching SNMP Elective 2272 ARCH-SNMP Architecture Describing SNMP Frameworks Elective 2271 -------- IEEE 802.12 Repeater MIB Elective 2266 AGENTX Agent Extensibility Protocol Elective 2257 -------- Summary of the X.500(96) with LDAPv3 Elective 2256 LDAP-URL LDAP URL Format Elective 2255 STR-LDAP String Rep of LDAP Search Filters Elective 2254 LDAP3-UTF8 LDAPv3: UTF-8 String Rep Elective 2253 LDAP3-ATD LDAP3-: Attribute Syntax Definitions Elective 2252 LDAPV3 Lightweight Directory Access Protocol Elective 2251 RTP-MPEG RTP Payload Format for MPEG1/MPEG2 Elective 2250 MAIL-MIB Mail Monitoring MIB Elective 2249 NSM-MIB Network Services Monitoring MIB Elective 2248 -------- Using Domains LDAP/X.500 Dist. Names Elective 2247 SASL-ANON Anonymous SASL Mechanism Elective 2245 ACAP Application Configuration Access Elective 2244 OTP-ER OTP Extended Responses Elective 2243 NETWAREIP NetWare/IP Domain Name and Information Elective 2242 DHCP-NDS DHCP Options for Novell Directory Serv. Elective 2241 MAUS-MIB IEEE 802.3 Medium Attachment Units MIB Elective 2239 HPR-MIB Definitions of Managed Objects for HPR Elective 2238 IGMP Internet Group Management Protocol V2 Elective 2236 ABNF Augmented BNF for Syntax Specifications Elective 2234 INTERGRMIB Interfaces Group MIB Elective 2233 DLUR-MIB Definitions of Managed Objects for DLUR Elective 2232 MIME-EXT MIME Parameter Value & Encoded Word Ext Elective 2231 FTPSECEXT FTP Security Extensions Elective 2228 --------- Simple Hit-Metering, Usage-Limiting HTTP Elective 2227 --------- IP Broadcast over ATM Networks Elective 2226 SASL Simple Authentication and Security Layer Elective 2222 IMAP4LOGIN IMAP4 Login Referrals Elective 2221 --------- Schema for Internet White Pages Service Elective 2218 --------- Characterization Parameters for ISNE Elective 2215 --------- Integrated Services MIB Guar Serv Ext Elective 2214 --------- Integrated Services MIB using SMIv2 Elective 2213 GQOS Spec. of Guaranteed Quality of Service Elective 2212 Internet Architecture Board Standards Track [Page 27]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 --------- Spec. of Controlled-Load Net Ele Serv Elective 2211 RSVP-IS Use of RSVP with IETF Integrated Serv Elective 2210 RSVP-MPR RSVP Messaging Processing Rules Elective 2209 RSVP-APP RSVP Applicability Statement Elective 2208 RSVP-IPSEC RSVP Extensions for IPSEC Data Flows Elective 2207 RSVP-MIB RSVP Management Information Base Elective 2206 RSVP Resource ReSerVation Protocol V1 Elective 2205 RPCSEC-GSS RPCSEC_GSS Protocol Specification Elective 2203 RTP-RAD RTP Payload for Redundant Audio Data Elective 2198 IMAPPOPAU IMAP/POP AUTHorize Extension Elective 2195 IMAP4MAIL IMAP4 Mailbox Referrals Elective 2193 IMAP-URL IMAP URL Scheme Elective 2192 --------- RTP Payload Format for H.263 Video ST Elective 2190 --------- The Content-Disposition Header Field Elective 2183 DNS-CLAR Clarifications to the DNS Specification Elective 2181 IMAP4-IDLE IMAP4 IDLE command Elective 2177 SLP Service Location Protocol Elective 2165 --------- X.500/LDAP Directory/MIXER Address Map. Elective 2164 DNS-MCGAM Using DNS to Distribute MCGAM Elective 2163 --------- Carrying PostScript in X.400 and MIME Elective 2160 --------- A MIME Body Part for FAX Elective 2159 --------- X.400 Image Body Parts Elective 2158 --------- Mapping between X.400 and <a href="./rfc822">RFC-822</a>/MIME Elective 2157 MIXER Mime Internet X.400 Enhanced Relay Elective 2156 APPN-MIB Definitions of Managed Objects for APPN Elective 2155 IPv6-Jumbo TCP and UDP over IPv6 Jumbograms Elective 2147 MAIL-SERV Mailbox Names for Common Services Elective 2142 URN-SYNTAX URN Syntax Elective 2141 RADIUS Remote Authentication Dial In Service Elective 2138 SDNSDU Secure Domain Name System Dynamic Update Elective 2137 DNS-UPDATE Dynamic Updates in the DNS Elective 2136 DC-MIB Dial Control MIB using SMIv2 Elective 2128 ISDN-MIB ISDN MIB using SMIv2 Elective 2127 ITOT ISO Transport Service on top of TCP Elective 2126 BAP-BACP PPP-BAP, PPP-BACP Elective 2125 VEMMI-URL VEMMI URL Specification Elective 2122 ROUT-ALERT IP Router Alert Option Elective 2113 MHTML MIME E-mail Encapsulation Elective 2110 HTTP-STATE HTTP State Management Mechanism Elective 2109 802.3-MIB 802.3 Repeater MIB using SMIv2 Elective 2108 PPP-NBFCP PPP NetBIOS Frames Control Protocol Elective 2097 TABLE-MIB IP Forwarding Table MIB Elective 2096 RIP-TRIG Trigger RIP Elective 2091 IMAP4-LIT IMAP4 non-synchronizing literals Elective 2088 IMAP4-QUO IMAP4 QUOTA extension Elective 2087 IMAP4-ACL IMAP4 ACL Extension Elective 2086 HMAC-MD5 HMAC-MD5 IP Auth. with Replay Prevention Elective 2085 RIP2-MD5 RIP-2 MD5 Authentication Elective 2082 Internet Architecture Board Standards Track [Page 28]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 RIPNG-IPV6 RIPng for IPv6 Elective 2080 URI-ATT URI Attribute Type and Object Class Elective 2079 GSSAP Generic Security Service Application Elective 2078 MIME-MODEL Model Primary MIME Types Elective 2077 RMON-MIB Remote Network Monitoring MIB Elective 2074 HTML-INT HTML Internationalization Elective 2070 DAA Digest Access Authentication Elective 2069 HTTP-1.1 Hypertext Transfer Protocol -- HTTP/1.1 Elective 2068 DNS-SEC Domain Name System Security Extensions Elective 2065 IMAPV4 Internet Message Access Protocol v4rev1 Elective 2060 URLZ39.50 Uniform Resource Locators for Z39.50 Elective 2056 SNANAU-APP SNANAU APPC MIB using SMIv2 Elective 2051 PPP-SNACP PPP SNA Control Protocol Elective 2043 ENTITY-MIB Entity MIB using SMIv2 Elective 2037 RTP-JPEG RTP Payload Format for JPEG-compressed Elective 2035 SMTP-ENH SMTP Enhanced Error Codes Elective 2034 RTP-H.261 RTP Payload Format for H.261 Elective 2032 RTP-CELLB RTP Payload Format of Sun's CellB Elective 2029 SPKM Simple Public-Key GSS-API Mechanism Elective 2025 DLSW-MIB DLSw MIB using SMIv2 Elective 2024 IPV6-PPP IP Version 6 over PPP Elective 2023 MULTI-UNI Multicast over UNI 3.0/3.1 based ATM Elective 2022 RMON-MIB RMON MIB using SMIv2 Elective 2021 802.12-MIB IEEE 802.12 Interface MIB Elective 2020 IPV6-FDDI Transmission of IPv6 Packets Over FDDI Elective 2019 TCP-ACK TCP Selective Acknowledgement Options Elective 2018 URL-ACC URL Access-Type Elective 2017 MIME-PGP MIME Security with PGP Elective 2015 MIB-UDP SNMPv2 MIB for UDP Elective 2013 MIB-TCP SNMPv2 MIB for TCP Elective 2012 MIB-IP SNMPv2 MIB for IP Elective 2011 MOBILEIPMIBMobile IP MIB Definition using SMIv2 Elective 2006 MOBILEIPAPPApplicability Statement for IP Mobility Elective 2005 MINI-IP Minimal Encapsulation within IP Elective 2004 IPENCAPIP IP Encapsulation within IP Elective 2003 MOBILEIPSUPIP Mobility Support Elective 2002 TCPSLOWSRT TCP Slow Start, Congestion Avoidance... Elective 2001 BGP-COMM BGP Communities Attribute Elective 1997 DNS-NOTIFY Mech. for Notification of Zone Changes Elective 1996 DNS-IZT Incremental Zone Transfer in DNS Elective 1995 SMTP-ETRN SMTP Service Extension ETRN Elective 1985 SNA Serial Number Arithmetic Elective 1982 MTU-IPV6 Path MTU Discovery for IP version 6 Elective 1981 PPP-FRAME PPP in Frame Relay Elective 1973 IPV6-ETHER Transmission IPv6 Packets Over Ethernet Elective 1972 IPV6-AUTO IPv6 Stateless Address Autoconfiguation Elective 1971 IPV6-ND Neighbor Discovery for IP Version 6 Elective 1970 PPP-ECP PPP Encryption Control Protocol Elective 1968 Internet Architecture Board Standards Track [Page 29]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 GSSAPI-KER Kerberos Version 5 GSS-API Mechanism Elective 1964 PPP-CCP PPP Compression Control Protocol Elective 1962 GSSAPI-SOC GSS-API Auth for SOCKS Version 5 Elective 1961 LDAP-STR String Rep. of LDAP Search Filters Elective 1960 LDAP-URL LDAP URL Format Elective 1959 TRANS-IPV6 Transition Mechanisms IPv6 Hosts/Routers Elective 1933 AUTH-SOCKS Username Authentication for SOCKS V5 Elective 1929 SOCKSV5 SOCKS Protocol Version 5 Elective 1928 WHOIS++M How to Interact with a Whois++ Mesh Elective 1914 WHOIS++A Architecture of Whois++ Index Service Elective 1913 DSN Delivery Status Notifications Elective 1894 EMS-CODE Enhanced Mail System Status Codes Elective 1893 MIME-RPT Multipart/Report Elective 1892 SMTP-DSN SMTP Delivery Status Notifications Elective 1891 RTP-AV RTP Audio/Video Profile Elective 1890 RTP Transport Protocol for Real-Time Apps Elective 1889 DNS-IPV6 DNS Extensions to support IPv6 Elective 1886 ICMPv6 ICMPv6 for IPv6 Elective 1885 IPV6 IPv6 Specification Elective 1883 HTML Hypertext Markup Language - 2.0 Elective 1866 MIME-Sec MIME Object Security Services Elective 1848 MIME-Encyp MIME: Signed and Encrypted Elective 1847 WHOIS++ Architecture of the WHOIS++ service Elective 1835 -------- Binding Protocols for ONC RPC Version 2 Elective 1833 XDR External Data Representation Standard Elective 1832 RPC Remote Procedure Call Protocol V. 2 Elective 1831 -------- ESP DES-CBC Transform Ele/Req 1829 -------- IP Authentication using Keyed MD5 Ele/Req 1828 ESP IP Encapsulating Security Payload Ele/Req 1827 IPV6-AH IP Authentication Header Ele/Req 1826 -------- Security Architecture for IP Ele/Req 1825 RREQ Requirements for IP Version 4 Routers Elective 1812 URL Relative Uniform Resource Locators Elective 1808 CLDAP Connection-less LDAP Elective 1798 OSPF-DC Ext. OSPF to Support Demand Circuits Elective 1793 OSI-Dir OSI User Friendly Naming ... Elective 1781 MIME-EDI MIME Encapsulation of EDI Objects Elective 1767 Lang-Tag Tags for Identification of Languages Elective 1766 XNSCP PPP XNS IDP Control Protocol Elective 1764 BVCP PPP Banyan Vines Control Protocol Elective 1763 Print-MIB Printer MIB Elective 1759 ATM-SIG ATM Signaling Support for IP over ATM Elective 1755 IPNG Recommendation for IP Next Generation Elective 1752 802.5-SSR 802.5 SSR MIB using SMIv2 Elective 1749 SDLCSMIv2 SNADLC SDLC MIB using SMIv2 Elective 1747 BGP4/IDRP BGP4/IDRP for IP/OSPF Interaction Elective 1745 AT-MIB Appletalk MIB Elective 1742 MacMIME MIME Encapsulation of Macintosh files Elective 1740 Internet Architecture Board Standards Track [Page 30]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 URL Uniform Resource Locators Elective 1738 POP3-AUTH POP3 AUTHentication command Elective 1734 IMAP4-AUTH IMAP4 Authentication Mechanisms Elective 1731 RDBMS-MIB RDMS MIB - using SMIv2 Elective 1697 MODEM-MIB Modem MIB - using SMIv2 Elective 1696 ATM-MIB ATM Management Version 8.0 using SMIv2 Elective 1695 TMUX Transport Multiplexing Protocol Elective 1692 SNANAU-MIB SNA NAUs MIB using SMIv2 Elective 1666 PPP-TRANS PPP Reliable Transmission Elective 1663 -------- Postmaster Convention X.400 Operations Elective 1648 PPP-BCP PPP Bridging Control Protocol Elective 1638 UPS-MIB UPS Management Information Base Elective 1628 PPP-SONET PPP over SONET/SDH Elective 1619 PPP-ISDN PPP over ISDN Elective 1618 DNS-R-MIB DNS Resolver MIB Extensions Elective 1612 DNS-S-MIB DNS Server MIB Extensions Elective 1611 FR-MIB Frame Relay Service MIB Elective 1604 PPP-X25 PPP in X.25 Elective 1598 OSPF-NSSA The OSPF NSSA Option Elective 1587 OSPF-Multi Multicast Extensions to OSPF Elective 1584 SONET-MIB MIB SONET/SDH Interface Type Elective 1595 RIP-DC Extensions to RIP to Support Demand Cir. Elective 1582 -------- Evolution of the Interfaces Group of MIB-II Elective 1573 PPP-LCP PPP LCP Extensions Elective 1570 X500-MIB X.500 Directory Monitoring MIB Elective 1567 CIPX Compressing IPX Headers Over WAM Media Elective 1553 IPXCP PPP Internetworking Packet Exchange Control Elective 1552 SRB-MIB Source Routing Bridge MIB Elective 1525 CIDR-STRA CIDR Address Assignment... Elective 1519 CIDR-ARCH CIDR Architecture... Elective 1518 CIDR-APP CIDR Applicability Statement Elective 1517 -------- 802.3 MAU MIB Elective 1515 HOST-MIB Host Resources MIB Elective 1514 -------- Token Ring Extensions to RMON MIB Elective 1513 FDDI-MIB FDDI Management Information Base Elective 1512 KERBEROS Kerberos Network Authentication Ser (V5) Elective 1510 GSSAPI Generic Security Service API: C-bindings Elective 1509 DASS Distributed Authentication Security... Elective 1507 -------- X.400 Use of Extended Character Sets Elective 1502 HARPOON Rules for Downgrading Messages... Elective 1496 Equiv X.400/MIME Body Equivalences Elective 1494 IDPR Inter-Domain Policy Routing Protocol Elective 1479 IDPR-ARCH Architecture for IDPR Elective 1478 PPP/Bridge MIB Bridge PPP MIB Elective 1474 PPP/IP MIB IP Network Control Protocol of PPP MIB Elective 1473 PPP/SEC MIB Security Protocols of PPP MIB Elective 1472 PPP/LCP MIB Link Control Protocol of PPP MIB Elective 1471 X25-MIB Multiprotocol Interconnect on X.25 MIB Elective 1461 Internet Architecture Board Standards Track [Page 31]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 SNMPv2 Introduction to SNMPv2 Elective 1441 PEM-KEY PEM - Key Certification Elective 1424 PEM-ALG PEM - Algorithms, Modes, and Identifiers Elective 1423 PEM-CKM PEM - Certificate-Based Key Management Elective 1422 PEM-ENC PEM - Message Encryption and Auth Elective 1421 SNMP-IPX SNMP over IPX Elective 1420 SNMP-AT SNMP over AppleTalk Elective 1419 SNMP-OSI SNMP over OSI Elective 1418 FTP-FTAM FTP-FTAM Gateway Specification Elective 1415 IDENT-MIB Identification MIB Elective 1414 IDENT Identification Protocol Elective 1413 DS3/E3-MIB DS3/E3 Interface Type Elective 1407 DS1/E1-MIB DS1/E1 Interface Type Elective 1406 BGP-OSPF BGP OSPF Interaction Elective 1403 -------- Route Advertisement In BGP2 And BGP3 Elective 1397 SNMP-X.25 SNMP MIB Extension for X.25 Packet Layer Elective 1382 SNMP-LAPB SNMP MIB Extension for X.25 LAPB Elective 1381 PPP-ATCP PPP AppleTalk Control Protocol Elective 1378 PPP-OSINLCP PPP OSI Network Layer Control Protocol Elective 1377 SNMP-PARTY-MIB Administration of SNMP Elective 1353 SNMP-SEC SNMP Security Protocols Elective 1352 SNMP-ADMIN SNMP Administrative Model Elective 1351 TOS Type of Service in the Internet Elective 1349 PPP-IPCP PPP Control Protocol Elective 1332 ------- X.400 1988 to 1984 downgrading Elective 1328 TCP-EXT TCP Extensions for High Performance Elective 1323 NETFAX File Format for the Exchange of Images Elective 1314 FDDI-MIB FDDI-MIB Elective 1285 ------- Encoding Network Addresses Elective 1277 ------- Replication and Distributed Operations Elective 1276 ------- COSINE and Internet X.500 Schema Elective 1274 BGP-MIB Border Gateway Protocol MIB (Version 3) Elective 1269 ICMP-ROUT ICMP Router Discovery Messages Elective 1256 OSI-UDP OSI TS on UDP Elective 1240 STD-MIBs Reassignment of Exp MIBs to Std MIBs Elective 1239 IPX-IP Tunneling IPX Traffic through IP Nets Elective 1234 IS-IS OSI IS-IS for TCP/IP Dual Environments Elective 1195 IP-CMPRS Compressing TCP/IP Headers Elective 1144 NNTP Network News Transfer Protocol Elective 977 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] [Note: Ele/Req indicates elective for use with IPv4 and required for use with IPv6.] Applicability Statements: Internet Architecture Board Standards Track [Page 32]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.6" href="#section-6.6">6.6</a>. Telnet Options For convenience, all the Telnet Options are collected here with both their state and status. Protocol Name Number State Status RFC STD ======== ===================================== ===== ====== ==== === TOPT-BIN Binary Transmission 0 Std Rec 856 27 TOPT-ECHO Echo 1 Std Rec 857 28 TOPT-RECN Reconnection 2 Prop Ele ... TOPT-SUPP Suppress Go Ahead 3 Std Rec 858 29 TOPT-APRX Approx Message Size Negotiation 4 Prop Ele ... TOPT-STAT Status 5 Std Rec 859 30 TOPT-TIM Timing Mark 6 Std Rec 860 31 TOPT-REM Remote Controlled Trans and Echo 7 Prop Ele 726 TOPT-OLW Output Line Width 8 Prop Ele ... TOPT-OPS Output Page Size 9 Prop Ele ... TOPT-OCRD Output Carriage-Return Disposition 10 Hist Ele 652 * TOPT-OHT Output Horizontal Tabstops 11 Hist Ele 653 * TOPT-OHTD Output Horizontal Tab Disposition 12 Hist Ele 654 * TOPT-OFD Output Formfeed Disposition 13 Hist Ele 655 * TOPT-OVT Output Vertical Tabstops 14 Hist Ele 656 * TOPT-OVTD Output Vertical Tab Disposition 15 Hist Ele 657 * TOPT-OLD Output Linefeed Disposition 16 Hist Ele 658 * TOPT-EXT Extended ASCII 17 Prop Ele 698 TOPT-LOGO Logout 18 Prop Ele 727 TOPT-BYTE Byte Macro 19 Prop Ele 735 TOPT-DATA Data Entry Terminal 20 Prop Ele 1043 TOPT-SUP SUPDUP 21 Prop Ele 736 TOPT-SUPO SUPDUP Output 22 Prop Ele 749 TOPT-SNDL Send Location 23 Prop Ele 779 TOPT-TERM Terminal Type 24 Prop Ele 1091 TOPT-EOR End of Record 25 Prop Ele 885 TOPT-TACACS TACACS User Identification 26 Prop Ele 927 TOPT-OM Output Marking 27 Prop Ele 933 TOPT-TLN Terminal Location Number 28 Prop Ele 946 TOPT-3270 Telnet 3270 Regime 29 Prop Ele 1041 TOPT-X.3 X.3 PAD 30 Prop Ele 1053 TOPT-NAWS Negotiate About Window Size 31 Prop Ele 1073 TOPT-TS Terminal Speed 32 Prop Ele 1079 TOPT-RFC Remote Flow Control 33 Prop Ele 1372 TOPT-LINE Linemode 34 Draft Ele 1184 TOPT-XDL X Display Location 35 Prop Ele 1096 TOPT-ENVIR Telnet Environment Option 36 Hist Not 1408 TOPT-AUTH Telnet Authentication Option 37 Exp Ele 1416 TOPT-ENVIR Telnet Environment Option 39 Prop Ele 1572 TOPT-TN3270E TN3270 Enhancements 40 Draft Ele 2355 * TOPT-AUTH Telnet XAUTH 41 Exp Internet Architecture Board Standards Track [Page 33]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 TOPT-CHARSET Telnet CHARSET 42 Exp 2066 TOPR-RSP Telnet Remote Serial Port 43 Exp TOPT-COMPORT Telnet Com Port Control 44 Exp 2217 TOPT-SLE Telnet Suppress Local Echo 45 Exp * TOPT-STARTTLS Telnet Start TLS 46 Exp * TOPT-KERMIT Telnet KERMIT 47 Exp * TOPT-SEND-URL Send-URL 48 Exp * TOPT-EXTOP Extended-Options-List 255 Std Rec 861 32 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Internet Architecture Board Standards Track [Page 34]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.7" href="#section-6.7">6.7</a>. Experimental Protocols All Experimental protocols have the Limited Use status. Protocol Name RFC ======== ===================================== ===== TCP-WIN Increasing TCP's Initial Window 2414* PIM-SM Protocol Independent Multicast-Sparse Mode 2362* ------- Domain Names and Company Name Retrieva 2345 RTP-MPEG RTP Payload Format for Bundled MPEG 2343 ------- Intra-LIS IP Multicast/Routers over ATM using PIM 2337 ------- Safe Response Header Field 2310 LDAP-NIS Approach Using LDAP as a Network Information Service 2307 HTTP-RVSA HTTP Remote Variant Selection Algorithm 2296 TCN-HTTP Transparent Content Negotiation in HTTP 2295 ------- Core Based Trees (CBT) Multicast Routing Architecture 2201 ------- Core Based Trees (CBT version 2) Multicast Routing 2189 ------- Trivial Convention using HTTP in URN Resolution 2169 ------- Resolution of URIs using DNS 2168 MAP-MAIL X.400 Mapping and Mail-11 2162 MIME-ODA A MIME Body Part for ODA 2161 OSPF-DIG OSPF with Digital Signature 2154 GKMP-ARCH Group Key Management Protocol (GKMP) Architecture 2094 GKMP-SPEC Group Key Management Protocol (GKMP) Specification 2093 IP-SCSI Encapsulating IP with the SCSI 2143 X.500-NAME Managing the X.500 Root Naming Context 2120 TFTP-MULTI TFTP Multicast Option 2090 IP-Echo IP Echo Host Service 2075 METER-MIB Traffic Flow Measurement Meter MIB 2064 TFM-ARCH Traffic Flow Measurement Architecture 2063 DNS-SRV Location of Services in the DNS 2052 URAS Uniform Resource Agents 2016 GPS-AR GPS-Based Addressing and Routing 2009 ETFTP Enhanced Trivial File Transfer Protocol 1986 BGP-RR BGP Route Reflection 1966 BGP-ASC Autonomous System Confederations for BGP 1965 SMKD Scalable Multicast Key Distribution 1949 HTML-TBL HTML Tables 1942 SNMPV2SM User-based Security Model for SNMPv2 1910 SNMPV2AI SNMPv2 Administrative Infrastructure 1909 SNMPV2CB Introduction to Community-based SNMPv2 1901 ------- IPv6 Testing Address Allocation 1897 DNS-LOC Location Information in the DNS 1876 SGML-MT SGML Media Types 1874 CONT-MT Access Type Content-ID 1873 UNARP ARP Extension - UNARP 1868 ------- Form-based File Upload in HTML 1867 ------- BGP/IDRP Route Server Alternative 1863 Internet Architecture Board Standards Track [Page 35]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 ------- IP Authentication using Keyed SHA 1852 ESP3DES ESP Triple DES Transform 1851 ------- SMTP 521 Reply Code 1846 ------- SMTP Serv. Ext. for Checkpoint/Restart 1845 ------- SMTP Serv. Ext. Large and Binary MIME Msgs. 1830 ST2 Stream Protocol Version 2 1819 ------- Content-Disposition Header 1806 ------- Schema Publishing in X.500 Directory 1804 ------- X.400-MHS use X.500 to support X.400-MHS Routing 1801 ------- Class A Subnet Experiment 1797 TCP/IPXMIB TCP/IPX Connection Mib Specification 1792 ------- TCP And UDP Over IPX Networks With Fixed Path MTU 1791 ICMP-DM ICMP Domain Name Messages 1788 CLNP-MULT Host Group Extensions for CLNP Multicasting 1768 OSPF-OVFL OSPF Database Overflow 1765 RWP Remote Write ProtocolL - Version 1.0 1756 NARP NBMA Address Resolution Protocol 1735 DNS-ENCODE DNS Encoding of Geographical Location 1712 TCP-POS An Extension to TCP: Partial Order Service 1693 T/TCP TCP Extensions for Transactions 1644 MIME-UNI Using Unicode with MIME 1641 FOOBAR FTP Operation Over Big Address Records 1639 X500-CHART Charting Networks in the X.500 Directory 1609 X500-DIR Representing IP Information in the X.500 Directory 1608 SNMP-DPI SNMP Distributed Protocol Interface 1592 CLNP-TUBA Use of ISO CLNP in TUBA Environments 1561 REM-PRINT TPC.INT Subdomain Remote Printing - Technical 1528 EHF-MAIL Encoding Header Field for Internet Messages 1505 RAP Internet Route Access Protocol 1476 TP/IX TP/IX: The Next Internet 1475 X400 Routing Coordination for X.400 Services 1465 DNS Storing Arbitrary Attributes in DNS 1464 IRCP Internet Relay Chat Protocol 1459 TOS-LS Link Security TOS 1455 SIFT/UFT Sender-Initiated/Unsolicited File Transfer 1440 DIR-ARP Directed ARP 1433 TEL-SPX Telnet Authentication: SPX 1412 TEL-KER Telnet Authentication: Kerberos V4 1411 TRACE-IP Traceroute Using an IP Option 1393 DNS-IP Experiment in DNS Based IP Routing 1383 RMCP Remote Mail Checking Protocol 1339 TCP-HIPER TCP Extensions for High Performance 1323 MSP2 Message Send Protocol 2 1312 DSLCP Dynamically Switched Link Control 1307 -------- X.500 and Domains 1279 IN-ENCAP Internet Encapsulation Protocol 1241 CLNS-MIB CLNS-MIB 1238 CFDP Coherent File Distribution Protocol 1235 Internet Architecture Board Standards Track [Page 36]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 IP-AX.25 IP Encapsulation of AX.25 Frames 1226 ALERTS Managing Asynchronously Generated Alerts 1224 MPP Message Posting Protocol 1204 SNMP-BULK Bulk Table Retrieval with the SNMP 1187 DNS-RR New DNS RR Definitions 1183 IMAP2 Interactive Mail Access Protocol 1176 NTP-OSI NTP over OSI Remote Operations 1165 DMF-MAIL Digest Message Format for Mail 1153 RDP Reliable Data Protocol 908,1151 TCP-ACO TCP Alternate Checksum Option 1146 IP-DVMRP IP Distance Vector Multicast Routing 1075 VMTP Versatile Message Transaction Protocol 1045 COOKIE-JAR Authentication Scheme 1004 NETBLT Bulk Data Transfer Protocol 998 IRTP Internet Reliable Transaction Protocol 938 LDP Loader Debugger Protocol 909 RLP Resource Location Protocol 887 NVP-II Network Voice Protocol ISI-memo PVP Packet Video Protocol ISI-memo [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Internet Architecture Board Standards Track [Page 37]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.8" href="#section-6.8">6.8</a>. Informational Protocols Information protocols have no status. Protocol Name RFC ======= ==================================== ===== -------- ST2+ over ATM Protocol Spec - UNI 3.1 Version 2383* -------- Mapping Airline Reservation, Ticketing, Messaging 2351 KOI8-U Ukrainian Character Set KOI8-U 2319 TEXT-CSS The text/css Media Type 2318 PKCS-7 PKCS #7: Cryptographic Message Syntax Version 1.5 2315 PKCS-10 PKCS #10: Certification Request Syntax Version 1.5 2314 PKCS-1 PKCS #1: RSA Encryption Version 1.5 2313 SMIME-CERT S/MIME Version 2 Certificate Handling 2312 SMIME-MSG S/MIME Version 2 Message Specification 2311 TIFF Tag Image File Format F Profile for Facsimile 2302 GSMP Ipsilon's General Switch Management Protocol 2297 HSRP Cisco Hot Standby Router Protocol (HSRP) 2281 RC2-ENCRP A Description of the RC2(r) Encryption Algorithm 2268 SNQP Simple Nomenclator Query Protocol 2259 -------- Japanese Character Encoding for Internet Messages 2237 KEYX-DNS Key Exchange Delegation Record for the DNS 2230 DSP A Dictionary Server Protocol 2229 NFS-URL NFS URL Scheme 2224 APP-MARC The Application/MARC Content-type 2220 ODETTE-FTP ODETTE File Transfer Protocol 2204 ESRO AT&T/Neda's Efficient Short Remote Operations Protocol 2188 ICP Internet Cache Protocol Version 2 2186 IPV4-MAPOS IPv4 over MAPOS Version 1 2176 MAPOS-SONET Multiple Access Protocol over SONET/SDH Version 1 2171 RWHOIS Referral Whois Protocol 2167 PPP-EXT PPP Vendor Extensions 2153 UTF-7 UTF-7 2152 CAST-128 CAST-128 Encryption Algorithm 2144 RADIUS-ACC RADIUS Accounting 2139 DLSCAP Data Link Switching Client Access Protocol 2114 PNG Portable Network Graphics Version 1.0 2083 RC5 RC5, RC5-CBC, RC5-CBC-Pad, and RC5-CTS Algorithms 2040 SNTP Simple Network Time Protocol v4 for IPv4, IPv6 and OSI 2030 PGP-MEF PGP Message Exchange Formats 1991 PPP-DEFL PPP Deflate Protocol 1979 PPP-PRED PPP Predictor Compression Protocol 1978 PPP-BSD PPP BSD Compression Protocol 1977 PPP-DCE PPP for Data Compression in DCE 1976 PPP-MAG PPP Magnalink Variable Resource Compression 1975 PPP-STAC PPP Stac LZS Compression Protocol 1974 GZIP GZIP File Format Specification Version 4.3 1952 DEFLATE DEFLATE Compressed Data Format Specification V. 1.3 1951 Internet Architecture Board Standards Track [Page 38]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 ZLIB ZLIB Compressed Data Format Specification V. 3.3 1950 HTTP-1.0 Hypertext Transfer Protocol -- HTTP/1.0 1945 -------- text/enriched MIME Content-type 1896 -------- Application/CALS-1840 Content-type 1895 -------- PPP IPCP Extensions for Name Server Addresses 1877 SNPP Simple Network Paging Protocol - Version 2 1861 -------- ISO Transport Class 2 Non-use Explicit Flow Control 1859 over TCP <a href="./rfc1006">RFC1006</a> extension -------- IP in IP Tunneling 1853 -------- PPP Network Control Protocol for LAN Extension 1841 TESS The Exponential Security System 1824 NFSV3 NFS Version 3 Protocol Specification 1813 -------- A Format for Bibliographic Records 1807 ------- Data Link Switching: Switch-to-Switch Protocol 1795 BGP-4 Experience with the BGP-4 Protocol 1773 SDMD IPv4 Option for Sender Directed MD Delivery 1770 SNOOP Snoop Version 2 Packet Capture File Format 1761 BINHEX MIME Content Type for BinHex Encoded Files 1741 DNS-NSAP DNS NSAP Resource Records 1706 RADIO-PAGE TPC.INT Subdomain: Radio Paging -- Technical Procedures 1703 GRE-IPv4 Generic Routing Encapsulation over IPv4 1702 GRE Generic Routing Encapsulatio 1701 ADSNA-IP Advanced SNA/IP: A Simple SNA Transport Protocol 1538 TACACS Terminal Access Control Protocol 1492 MD4 MD4 Message Digest Algorithm 1320 SUN-NFS Network File System Protocol 1094 SUN-RPC Remote Procedure Call Protocol Version 2 1057 GOPHER The Internet Gopher Protocol 1436 LISTSERV Listserv Distribute Protocol 1429 ------- Replication Requirements 1275 PCMAIL Pcmail Transport Protocol 1056 MTP Multicast Transport Protocol 1301 BSD Login BSD Login 1282 DIXIE DIXIE Protocol Specification 1249 IP-X.121 IP to X.121 Address Mapping for DDN 1236 OSI-HYPER OSI and LLC1 on HYPERchannel 1223 HAP2 Host Access Protocol 1221 SUBNETASGN On the Assignment of Subnet Numbers 1219 SNMP-TRAPS Defining Traps for use with SNMP 1215 DAS Directory Assistance Service 1202 LPDP Line Printer Daemon Protocol 1179 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Internet Architecture Board Standards Track [Page 39]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-6.9" href="#section-6.9">6.9</a>. Historic Protocols All Historic protocols have Not Recommended status. Protocol Name RFC STD ======== ===================================== ===== === IPV6-UNI IPv6 Provider-Based Unicast Address Elective 2073 * IPV6-Addr IPv6 Addressing Architecture Elective 1884 * L2F Cisco Layer Two Forwarding Protocol 2341 IPSO DoD Security Options for IP Elective 1108 SNMPv2 Manager-to-Manager MIB Elective 1451 SNMPv2 Party MIB for SNMPv2 Elective 1447 SNMPv2 Security Protocols for SNMPv2 Elective 1446 SNMPv2 Administrative Model for SNMPv2 Elective 1445 RIP Routing Information Protocol Ele 1058 34 -------- Mapping full 822 to Restricted 822 1137 BGP3 Border Gateway Protocol 3 (BGP-3) 1267,1268 -------- Gateway Requirements Req 1009 4 EGP Exterior Gateway Protocol Rec 904 18 SNMP-MUX SNMP MUX Protocol and MIB 1227 OIM-MIB-II OSI Internet Management: MIB-II 1214 IMAP3 Interactive Mail Access Protocol Version 3 1203 SUN-RPC Remote Procedure Call Protocol Version 1 1050 802.4-MIP IEEE 802.4 Token Bus MIB 1230 CMOT Common Management Information Services 1189 -------- Mail Privacy: Procedures 1113 -------- Mail Privacy: Key Management 1114 -------- Mail Privacy: Algorithms 1115 NFILE A File Access Protocol 1037 HOSTNAME HOSTNAME Protocol 953 SFTP Simple File Transfer Protocol 913 SUPDUP SUPDUP Protocol 734 BGP Border Gateway Protocol 1163,1164 MIB-I MIB-I 1156 SGMP Simple Gateway Monitoring Protocol 1028 HEMS High Level Entity Management Protocol 1021 STATSRV Statistics Server 996 POP2 Post Office Protocol, Version 2 937 RATP Reliable Asynchronous Transfer Protocol 916 HFEP Host - Front End Protocol 929 THINWIRE Thinwire Protocol 914 HMP Host Monitoring Protocol 869 GGP Gateway Gateway Protocol 823 RTELNET Remote Telnet Service 818 CLOCK DCNET Time Server Protocol 778 MPM Internet Message Protocol 759 NETRJS Remote Job Service 740 NETED Network Standard Text Editor 569 Internet Architecture Board Standards Track [Page 40]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 RJE Remote Job Entry 407 XNET Cross Net Debugger IEN-158 NAMESERVER Host Name Server Protocol IEN-116 MUX Multiplexing Protocol IEN-90 GRAPHICS Graphics Protocol NIC-24308 [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] <a class="selflink" id="section-6.10" href="#section-6.10">6.10</a>. Obsolete Protocols Some of the protocols listed in this memo are described in RFCs that are obsoleted by newer RFCs. "Obsolete" or "obsoleted" is not an official state or status of protocols. This subsection is for information only. While it may seem to be obviously wrong to have an obsoleted RFC in the list of standards, there may be cases when an older standard is in the process of being replaced. This process may take a year or two. Many obsoleted protocols are of little interest and are dropped from this memo altogether. Some obsoleted protocols have received enough recognition that it seems appropriate to list them under their current status and with the following reference to their current replacement. RFC RFC Status Title * ==== ==== ========= =================================== = 1305 obsoletes 1119 Stan/Rec Network Time Protocol version 2 Thanks to Lynn Wheeler for compiling the information in this subsection. [Note: an asterisk at the end of a line indicates a change from the previous edition of this document.] Internet Architecture Board Standards Track [Page 41]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-7" href="#section-7">7</a>. Contacts <a class="selflink" id="section-7.1" href="#section-7.1">7.1</a>. IAB, IETF, and IRTF Contacts 7.1.1. Internet Architecture Board (IAB) Contact Please send your comments about this list of protocols and especially about the Draft Standard Protocols to the Internet Architecture Board care of Abel Winerib, IAB Executive Director. Contacts: Abel Winerib Executive Director of the IAB Intel, JF2-64 2111 NE 25th Avenue Hillsboro, OR 97124 1-503-696-8972 AWinerib@ibeam.jf.intel.com Brian E. Carpenter Chair of the IAB IBM United Kingdon Laboratories Hursley Park Winchester Hampshire SO21 2JN +44 1962 816833 brian@hursley.ibm.com 7.1.2. Internet Engineering Task Force (IETF) Contact Contacts: Fred Baker Chair of the IETF cisco Systems, Inc. 519 Lado Drive Santa Barbara, CA 93111 1-805-681-0115 fred@cisco.com Internet Architecture Board Standards Track [Page 42]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 Steve Coya IESG Secretary Corporation for National Research Initiatives 1895 Preston White Drive, Suite 100 Reston, VA 22091 1-703-620-8990 scoya@IETF.ORG Steve Coya Executive Director of the IETF Corporation for National Research Initiatives 1895 Preston White Drive, Suite 100 Reston, VA 22091 1-703-620-8990 scoya@IETF.ORG 7.1.3. Internet Research Task Force (IRTF) Contact Contact: Abel Winerib Chair of the IRTF Intel, JF2-64 2111 NE 25th Avenue Hillsboro, OR 97124 1-503-696-8972 AWinerib@ibeam.jf.intel.com Internet Architecture Board Standards Track [Page 43]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-7.2" href="#section-7.2">7.2</a>. 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 1-310-822-1511 IANA@IANA.ORG The protocol standards are managed by the Internet Assigned Numbers Authority. Please refer to the document "Assigned Numbers" (<a href="./rfc1700">RFC-1700</a>) for further information about the status of protocol documents. There are two documents that summarize the requirements for host and gateways in the Internet, "Host Requirements" (<a href="./rfc1122">RFC-1122</a> and <a href="./rfc1123">RFC-1123</a>) and "Requirements for IP Version 4 Routers" (<a href="./rfc1812">RFC-1812</a>). How to obtain the most recent edition of this "Internet Official Protocol Standards" memo: The file "in-notes/std/std1.txt" may be copied via FTP from the FTP.ISI.EDU computer using the FTP username "anonymous" and FTP password "guest". Internet Architecture Board Standards Track [Page 44]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-7.3" href="#section-7.3">7.3</a>. Request for Comments Editor Contact Contact: Jon Postel RFC Editor USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292-6695 1-310-822-1511 RFC-Editor@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. <a class="selflink" id="section-7.4" href="#section-7.4">7.4</a>. The Network Information Center and Requests for Comments Distribution Contact RFCs can be obtained via FTP from FTP.ISI.EDU, with the pathname in- notes/rfcnnnn.txt (where "nnnn" refers to the number of the RFC). Login with FTP username "anonymous" and password "name@host.domain". RFCs can also be obtained via electronic mail from ISI.EDU by using the RFC-INFO service. Address the request to "rfc-info@isi.edu" with a message body of: Retrieve: RFC Doc-ID: RFCnnnn (Where "nnnn" refers to the number of the RFC (always use 4 digits - the DOC-ID of <a href="./rfc822">RFC 822</a> is "<a href="./rfc0822">RFC0822</a>")). The RFC-INFO@ISI.EDU server provides other ways of selecting RFCs based on keywords and such; for more information send a message to "rfc-info@isi.edu" with the message body "help: help". contact: RFC-Manager@ISI.EDU Internet Architecture Board Standards Track [Page 45]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 <a class="selflink" id="section-7.5" href="#section-7.5">7.5</a>. Sources for Requests for Comments Details on many sources of RFCs via FTP or EMAIL may be obtained by sending an EMAIL message to "rfc-info@ISI.EDU" with the message body "help: ways_to_get_rfcs". For example: To: rfc-info@ISI.EDU Subject: getting rfcs help: ways_to_get_rfcs <a class="selflink" id="section-8" href="#section-8">8</a>. Security Considerations Security issues are not addressed in this memo. <a class="selflink" id="section-9" href="#section-9">9</a>. Authors' Addresses Jon Postel USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292 Phone: 310-822-1511 Fax: 310-823-6714 EMail: Postel@ISI.EDU Joyce K. Reynolds USC/Information Sciences Institute 4676 Admiralty Way Marina del Rey, CA 90292 Phone: 310-822-1511 Fax: 310-823-6714 EMail: JKRey@ISI.EDU Internet Architecture Board Standards Track [Page 46]</pre> <hr class='noprint'/><pre class='newpage'> <a href="./rfc2400">RFC 2400</a> Internet Standards September 1998 Full Copyright Statement Copyright (C) The Internet Society (1998). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Internet Architecture Board Standards Track [Page 47] </pre> </body> </html>

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RFC 2400: Internet Official Protocol Standards