<pre>Network Working Group                          Internet Activities Board
Request for Comments: 1280                             J. Postel, Editor
Obsoletes: RFCs <a href="./rfc1250">1250</a>,                                         March 1992
<a href="./rfc1100">1100</a>, <a href="./rfc1083">1083</a>, <a href="./rfc1130">1130</a>, <a href="./rfc1140">1140</a>, <a href="./rfc1200">1200</a>
STD: 1



                    IAB OFFICIAL PROTOCOL STANDARDS


Status of this Memo

   This memo describes the state of standardization of protocols used in
   the Internet as determined by the Internet Activities Board (IAB).
   Distribution of this memo is unlimited.

Table of Contents

   Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-2">2</a>
   <a href="#section-1">1</a>.  The Standardization Process  . . . . . . . . . . . . . . . . <a href="#page-2">2</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-9">9</a>
   <a href="#section-4.1.3">4.1.3</a>.  Proposed Standard Protocol . . . . . . . . . . . . . . . <a href="#page-9">9</a>
   <a href="#section-4.1.4">4.1.4</a>.  Experimental Protocol  . . . . . . . . . . . . . . . . . <a href="#page-9">9</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-10">10</a>
   <a href="#section-4.2.1">4.2.1</a>.  Required Protocol  . . . . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <a href="#section-4.2.2">4.2.2</a>.  Recommended Protocol . . . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <a href="#section-4.2.3">4.2.3</a>.  Elective Protocol  . . . . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <a href="#section-4.2.4">4.2.4</a>.  Limited Use Protocol . . . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <a href="#section-4.2.5">4.2.5</a>.  Not Recommended Protocol . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <a href="#section-5">5</a>.  The Standards Track  . . . . . . . . . . . . . . . . . . .  <a href="#page-10">10</a>
   <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-12">12</a>
   <a href="#section-6">6</a>.  The Protocols  . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-14">14</a>
   <a href="#section-6.1">6.1</a>.  Recent Changes . . . . . . . . . . . . . . . . . . . . .  <a href="#page-14">14</a>
   <a href="#section-6.1.1">6.1.1</a>.  New RFCs . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-14">14</a>
   <a href="#section-6.1.2">6.1.2</a>.  Other Changes  . . . . . . . . . . . . . . . . . . . .  <a href="#page-20">20</a>



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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   <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-22">22</a>
   <a href="#section-6.4">6.4</a>.  Draft Standard Protocols . . . . . . . . . . . . . . . .  <a href="#page-23">23</a>
   <a href="#section-6.5">6.5</a>.  Proposed Standard Protocols  . . . . . . . . . . . . . .  <a href="#page-24">24</a>
   <a href="#section-6.6">6.6</a>.  Telnet Options . . . . . . . . . . . . . . . . . . . . .  <a href="#page-25">25</a>
   <a href="#section-6.7">6.7</a>.  Experimental Protocols . . . . . . . . . . . . . . . . .  <a href="#page-26">26</a>
   <a href="#section-6.8">6.8</a>.  Informational Protocols  . . . . . . . . . . . . . . . .  <a href="#page-27">27</a>
   <a href="#section-6.9">6.9</a>.  Historic Protocols . . . . . . . . . . . . . . . . . . .  <a href="#page-28">28</a>
   <a href="#section-7">7</a>.  Contacts . . . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-28">28</a>
   <a href="#section-7.1">7.1</a>.  IAB, IETF, and IRTF Contacts . . . . . . . . . . . . . .  <a href="#page-28">28</a>
   <a href="#section-7.1.1">7.1.1</a>.  Internet Activities Board (IAB) Contact  . . . . . . .  <a href="#page-28">28</a>
   <a href="#section-7.1.2">7.1.2</a>.  Internet Engineering Task Force (IETF) Contact . . . .  <a href="#page-29">29</a>
   <a href="#section-7.1.3">7.1.3</a>.  Internet Research Task Force (IRTF) Contact  . . . . .  <a href="#page-30">30</a>
   <a href="#section-7.2">7.2</a>.  Internet Assigned Numbers Authority (IANA) Contact . . .  <a href="#page-30">30</a>
   <a href="#section-7.3">7.3</a>.  Request for Comments Editor Contact  . . . . . . . . . .  <a href="#page-31">31</a>
   <a href="#section-7.4">7.4</a>.  Network Information Center Contact . . . . . . . . . . .  <a href="#page-31">31</a>
   <a href="#section-7.5">7.5</a>.  Sources for Requests for Comments  . . . . . . . . . . .  <a href="#page-32">32</a>
   <a href="#section-7.6">7.6</a>.  SRI Network Information Systems Center . . . . . . . . .  <a href="#page-32">32</a>
   <a href="#section-8">8</a>.  Security Considerations  . . . . . . . . . . . . . . . . .  <a href="#page-32">32</a>
   <a href="#section-9">9</a>.  Author's Address . . . . . . . . . . . . . . . . . . . . .  <a href="#page-32">32</a>

Introduction

   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-6.9">6.9</a> contain the lists of protocols in each stage of
   standardization.  Finally come pointers to references and contacts
   for further information.

   This memo is intended to be issued quarterly; please be sure the copy
   you are reading is current.  Current copies may be obtained from the
   Network Information Center or from the Internet Assigned Numbers
   Authority (see the contact information at the end of this memo).  Do
   not use this edition after 31-July-92.

   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-6.9">6.9</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.

<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>.  The Standardization Process</span>

   The Internet Activities Board maintains this list of documents that
   define standards for the Internet protocol suite (see <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)).  The IAB provides these



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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   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="./rfc1310">RFC-1310</a>.

   The majority of Internet protocol development and standardization
   activity takes place in the working groups of the Internet
   Engineering Task Force.

   Protocols which are to become standards in the Internet go through a
   series of states 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 and the IAB must ratify it.  If a
   recommendation is not ratified, the protocol is remanded to the IETF
   for further work.

   To allow time for the Internet community to consider and react to
   standardization proposals, the IAB imposes a minimum delay of 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 IAB practice that no proposed standard can be promoted
   to draft standard without at least two independent implementations
   (and the recommendation of the IESG).  Promotion from draft standard
   to standard generally requires operational experience and
   demonstrated interoperability of two or more implementations (and the
   recommendation of the IESG).

   In cases where there is uncertainty as to the proper decision
   concerning a protocol the IAB may convene a special review committee
   consisting of experts from the IETF, IRTF and the IAB with the
   purpose of recommending an explicit action to the IAB.

   Advancement of a protocol to proposed standard is an important step
   since it marks a protocol as a candidate for eventual standardization
   (it puts the protocol "on the standards track").  Advancement to
   draft standard is a major step which warns the community that, unless
   major objections are raised or flaws are discovered, the protocol is
   likely to be advanced to standard in six months.

   Some protocols have been superseded by better ones or are otherwise
   unused.  Such protocols are still documented in this memorandum with
   the designation "historic".




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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   Because the IAB believes it is useful to document the results of
   early protocol research and development work, some of the RFCs
   document protocols which are still in an experimental condition.  The
   protocols are designated "experimental" in this memorandum.  They
   appear in this report as a convenience to the community and not as
   evidence of their standardization.

   Other protocols, such as those developed by other standards
   organizations, or by particular vendors, may be of interest or may be
   recommended for use in the Internet.  The specifications of such
   protocols may be published as RFCs for the convenience of the
   Internet community.  These protocols are labeled "informational" in
   this memorandum.

   In addition to the working groups of the IETF, protocol development
   and experimentation may take place as a result of the work of the
   research groups of the Internet Research Task Force, or the work of
   other individuals interested in Internet protocol development.  The
   IAB encourages the documentation of such experimental work in the RFC
   series, but none of this work is considered to be on the track for
   standardization until the IESG has made a recommendation to advance
   the protocol to the proposed standard state, and the IAB has approved
   this step.

   A few protocols have achieved widespread implementation without the
   approval of the IESG and the IAB.  For example, some vendor protocols
   have become very important to the Internet community even though they
   have not been recommended by the IESG or ratified by the IAB.
   However, the IAB strongly recommends that the IAB standards process
   be used in the evolution of the protocol suite to maximize
   interoperability (and to prevent incompatible protocol requirements
   from arising).  The IAB reserves the use of the terms "standard",
   "draft standard", and "proposed standard" in any RFC or other
   publication of Internet protocols to only those protocols which the
   IAB has approved.

   In addition to a state (like "Proposed Standard"), a protocol is also
   assigned a status, or requirement level, in this document.  The
   possible requirement levels ("Required", "Recommended", "Elective",
   "Limited Use", and "Not Recommended") are defined in <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.  For a proposed or
   draft standard, however, the IAB will also endeavor to indicate the
   eventual status this protocol will have after adoption as a standard.

   Few protocols are required to be implemented in all systems; this is
   because there is such a variety of possible systems, for example,



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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   gateways, terminal servers, workstations, and multi-user hosts.  The
   requirement level shown in this document is only a one word label,
   which may not be sufficient to characterize the implementation
   requirements for a protocol in all situations.  For some protocols,
   this document contains an additional status paragraph (an
   applicability statement).  In addition, more detailed status
   information is contained in separate requirements documents (see
   <a href="#section-3">Section 3</a>).

<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>.  The Request for Comments Documents</span>

   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="./rfc1111">RFC 1111</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 both the IESG and the IAB.  For documents describing
   experimental work, the RFC Editor will notify the IESG before
   publication, allowing for the possibility of review by the relevant
   IETF working group or IRTF research group and provide those comments
   to the author.  See <a href="#section-5.1">Section 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
   is important to verify that you have the most recent RFC on a
   particular protocol.  This "IAB Official Protocol Standards" memo is



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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   the reference for determining the correct RFC for the current
   specification of each protocol.

   The RFCs are available from the Network Information Center at SRI
   International, and a number of other sites.  For more information
   about obtaining RFCs, see Sections <a href="#section-7.4">7.4</a> and <a href="#section-7.5">7.5</a>.

<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>.  Other Reference Documents</span>

   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>.

<span class="h3"><a class="selflink" id="section-3.1" href="#section-3.1">3.1</a>.  Assigned Numbers</span>

   This document lists the assigned values of the parameters used in the
   various protocols.  For example, IP protocol codes, TCP port numbers,
   Telnet Option Codes, ARP hardware types, and Terminal Type names.
   Assigned Numbers was most recently issued as <a href="./rfc1060">RFC-1060</a>.

   Another document, Internet Numbers, lists the assigned IP network
   numbers, and the autonomous system numbers.  Internet Numbers was
   most recently issued as <a href="./rfc1166">RFC-1166</a>.

<span class="h3"><a class="selflink" id="section-3.2" href="#section-3.2">3.2</a>.  Gateway Requirements</span>

   This document reviews the specifications that apply to gateways and
   supplies guidance and clarification for any ambiguities.  Gateway
   Requirements is <a href="./rfc1009">RFC-1009</a>.  A working group of the IETF is actively
   preparing a revision.

<span class="h3"><a class="selflink" id="section-3.3" href="#section-3.3">3.3</a>.  Host Requirements</span>

   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>.

<span class="h3"><a class="selflink" id="section-3.4" href="#section-3.4">3.4</a>.  The MIL-STD Documents</span>

   The Internet community specifications for IP (<a href="./rfc791">RFC-791</a>) and TCP (<a href="./rfc793">RFC-</a>
   <a href="./rfc793">793</a>) and the DoD MIL-STD specifications are intended to describe
   exactly the same protocols.  Any difference in the protocols



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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   specified by these sets of documents should be reported to DCA and to
   the IAB.  The RFCs and the MIL-STDs for IP and TCP differ in style
   and level of detail.  It is strongly advised that the two sets of
   documents be used together, along with <a href="./rfc1122">RFC-1122</a> and <a href="./rfc1123">RFC-1123</a>.

   The IAB and the DoD MIL-STD specifications for the FTP, SMTP, and
   Telnet protocols are essentially the same documents (RFCs 765, 821,
   854).  The MIL-STD versions have been edited slightly.  Note that the
   current Internet specification for FTP is <a href="./rfc959">RFC-959</a> (as modified by
   <a href="./rfc1123">RFC-1123</a>).

   Note that these MIL-STD are now somewhat out of date.  The Gateway
   Requirements (<a href="./rfc1009">RFC-1009</a>) and Host Requirements (<a href="./rfc1122">RFC-1122</a>, <a href="./rfc1123">RFC-1123</a>)
   take precedence over both earlier RFCs and the MIL-STDs.

          Internet Protocol (IP)                      MIL-STD-1777
          Transmission Control Protocol (TCP)         MIL-STD-1778
          File Transfer Protocol (FTP)                MIL-STD-1780
          Simple Mail Transfer Protocol (SMTP)        MIL-STD-1781
          Telnet Protocol and Options (TELNET)        MIL-STD-1782

   These documents are available from the Naval Publications and Forms
   Center.  Requests can be initiated by telephone, telegraph, or mail;
   however, it is preferred that private industry use form DD1425, if
   possible.  These five documents are included in the 1985 DDN Protocol
   Handbook (available from the SRI Network Information Systems Center,
   see <a href="#section-7.6">Section 7.6</a>).

          Naval Publications and Forms Center, Code 3015
          5801 Tabor Ave
          Philadelphia, PA 19120
          Phone: 1-215-697-3321 (order tape)
                 1-215-697-4834 (conversation)

<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>.  Explanation of Terms</span>

   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.




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<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   When a protocol is advanced to proposed standard or draft standard,
   it is labeled with a current status and when possible, the IAB also
   notes the status that the protocol is expected to have when it
   reaches the standard state.

   At any given time a protocol occupies a cell of the following matrix.
   Protocols are likely to be in cells in about the following
   proportions (indicated by the relative number of Xs).  A new protocol
   is most likely to start in the (proposed standard, elective) cell, or
   the (experimental, not recommended) cell.

                             S T A T U S
                     Req   Rec   Ele   Lim   Not
                   +-----+-----+-----+-----+-----+
           Std     |  X  | XXX | XXX |     |     |
       S           +-----+-----+-----+-----+-----+
           Draft   |  X  |  X  | XXX |     |     |
       T           +-----+-----+-----+-----+-----+
           Prop    |     |  X  | XXX |     |     |
       A           +-----+-----+-----+-----+-----+
           Info    |     |  X  | XXX |  XX |  X  |
       T           +-----+-----+-----+-----+-----+
           Expr    |     |     |  X  | XXX |  XX |
       E           +-----+-----+-----+-----+-----+
           Hist    |     |     |     |  X  | XXX |
                   +-----+-----+-----+-----+-----+

   What is a "system"?

      Some protocols are particular to hosts and some to gateways; a few
      protocols are used in both.  The definitions of the terms below
      will refer to a "system" which is either a host or a gateway (or
      both).  It should be clear from the context of the particular
      protocol which types of systems are intended.

<span class="h3"><a class="selflink" id="section-4.1" href="#section-4.1">4.1</a>.  Definitions of Protocol State</span>

   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 IAB 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



<span class="grey">Internet Activities Board                                       [Page 8]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-9" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      IP on particular types of networks.

   4.1.2.  Draft Standard Protocol

      The IAB is actively considering this protocol as a possible
      Standard Protocol.  Substantial and widespread testing and comment
      are desired.  Comments and test results should be submitted to the
      IAB.  There is a possibility that changes will be made in a Draft
      Standard Protocol before it becomes a Standard Protocol.

   4.1.3.  Proposed Standard Protocol

      These are protocol proposals that may be considered by the IAB for
      standardization in the future.  Implementation and testing by
      several groups is desirable.  Revision of the protocol
      specification is likely.

   4.1.4.  Experimental Protocol

      A system should not implement an experimental protocol unless it
      is participating in the experiment and has coordinated its use of
      the protocol with the developer of the protocol.

      Typically, experimental protocols are those that are developed as
      part of an ongoing research project not related to an operational
      service offering.  While they may be proposed as a service
      protocol at a later stage, and thus become proposed standard,
      draft standard, and then standard protocols, the designation of a
      protocol as experimental may sometimes be meant to suggest that
      the protocol, although perhaps mature, is not intended for
      operational use.

   4.1.5.  Informational Protocol

      Protocols developed by other standard organizations, or vendors,
      or that are for other reasons outside the purview of the IAB, may
      be published as RFCs for the convenience of the Internet community
      as informational protocols.  Such protocols may in some cases also
      be recommended for use in the Internet by the IAB.

   4.1.6.  Historic Protocol

      These are protocols that are unlikely to ever become standards in
      the Internet either because they have been superseded by later
      developments or due to lack of interest.






<span class="grey">Internet Activities Board                                       [Page 9]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-10" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-4.2" href="#section-4.2">4.2</a>.  Definitions of Protocol Status</span>

      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.

<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>.  The Standards Track</span>

   This section discusses in more detail the procedures used by the RFC
   Editor and the IAB in making decisions about the labeling and
   publishing of protocols as standards.

<span class="h3"><a class="selflink" id="section-5.1" href="#section-5.1">5.1</a>.  The RFC Processing Decision Table</span>

   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.






<span class="grey">Internet Activities Board                                      [Page 10]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-11" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      +==========================================================+
      |**************|               S O U R C E                 |
      +==========================================================+
      | Desired      |    IAB   |   IESG   |   IRSG   |  Other   |
      | Status       |          |          |  or RG   |          |
      +==========================================================+
      |              |          |          |          |          |
      | Standard     |  Publish |  Vote    |  Bogus   |  Bogus   |
      | or           |   (1)    |   (3)    |   (2)    |   (2)    |
      | Draft        |          |          |          |          |
      | Standard     |          |          |          |          |
      +--------------+----------+----------+----------+----------+
      |              |          |          |          |          |
      |              |  Publish |  Vote    |  Refer   |  Refer   |
      | Proposed     |   (1)    |   (3)    |   (4)    |   (4)    |
      | Standard     |          |          |          |          |
      |              |          |          |          |          |
      +--------------+----------+----------+----------+----------+
      |              |          |          |          |          |
      |              |  Publish |  Notify  |  Notify  |  Notify  |
      | Experimental |   (1)    |   (5)    |   (5)    |   (5)    |
      | Protocol     |          |          |          |          |
      |              |          |          |          |          |
      +--------------+----------+----------+----------+----------+
      |              |          |          |          |          |
      | Information  |  Publish |Discretion|Discretion|Discretion|
      | or Opinion   |   (1)    |   (6)    |   (6)    |   (6)    |
      | Paper        |          |          |          |          |
      |              |          |          |          |          |
      +==========================================================+

      (1) Publish.

      (2) Bogus.  Inform the source of the rules.  RFCs specifying
          Standard, or Draft Standard must come from the IAB, only.

      (3) Vote by the IAB.  If approved then do Publish (1), else do
          Refer (4).

      (4) Refer to an Area Director for review by a WG.  Expect to see
          the document again only after approval by the IESG and the
          IAB.

      (5) Notify both the IESG and IRSG.  If no concerns are raised in
          two weeks then do Discretion (6), else RFC Editor to resolve
          the concerns or do Refer (4).

      (6) RFC Editor's discretion.  The RFC Editor decides if a review



<span class="grey">Internet Activities Board                                      [Page 11]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-12" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


          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 (5) to the RFC Editor.  Documents from
   Area Directors or Working Group Chairs may be considered in the same
   way as documents from "other".

<span class="h3"><a class="selflink" id="section-5.2" href="#section-5.2">5.2</a>.  The Standards Track Diagram</span>

   There is a part of the STATUS and STATE categorization that is called
   the standards track.  Actually, only the changes of state are
   significant to the progression along the standards track, though the
   status assignments may be changed as well.

   The states illustrated by single line boxes are temporary states,
   those illustrated by double line boxes are long term states.  A
   protocol will normally be expected to remain in a temporary state for
   several months (minimum 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 by action of the IAB; and may move from one state to
   another along the track only on the recommendation of the IESG and by
   action of the IAB.  That is, it takes both the IESG and the IAB to
   either start a protocol on the track or to move it along.

   Generally, as the protocol enters the standards track a decision is
   made as to the eventual STATUS, 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.












<span class="grey">Internet Activities Board                                      [Page 12]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-13" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


         |
         +&lt;----------------------------------------------+
         |                                               ^
         V    0                                          |    4
   +-----------+                                   +===========+
   |   enter   |--&gt;----------------+--------------&gt;|experiment |
   +-----------+                   |               +=====+=====+
                                   |                     |
                                   V    1                |
                             +-----------+               V
                             | proposed  |--------------&gt;+
                        +---&gt;+-----+-----+               |
                        |          |                     |
                        |          V    2                |
                        +&lt;---+-----+-----+               V
                             | draft std |--------------&gt;+
                        +---&gt;+-----+-----+               |
                        |          |                     |
                        |          V    3                |
                        +&lt;---+=====+=====+               V
                             | standard  |--------------&gt;+
                             +=====+=====+               |
                                                         |
                                                         V    5
                                                   +=====+=====+
                                                   | historic  |
                                                   +===========+

   The transition from proposed standard (1) to draft standard (2) can
   only be by action of the IAB on the recommendation of the IESG and
   only after the protocol has been proposed standard (1) for at least
   six months.

   The transition from draft standard (2) to standard (3) can only be by
   action of the IAB on the recommendation of the IESG and only after
   the protocol has been draft standard (2) for at least 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
   IAB 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).



<span class="grey">Internet Activities Board                                      [Page 13]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-14" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>.  The Protocols</span>

   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>
   - 6.9 list the standards in groups by protocol state.

<span class="h3"><a class="selflink" id="section-6.1" href="#section-6.1">6.1</a>.  Recent Changes</span>

<span class="h4"><a class="selflink" id="section-6.1.1" href="#section-6.1.1">6.1.1</a>.  New RFCs:</span>

      1311 - Introduction to the STD Notes

             This is an information document and does not specify any
             level of standard.

      1310 - The Internet Standards Process

             This is an information document and does not specify any
             level of standard.

      1309 - Technical Overview of Directory Services
             Using the X.500 Protocol

             This is an information document and does not specify any
             level of standard.

      1308 - Executive Introduction to Directory Services
             Using the X.500 Protocol

             This is an information document and does not specify any
             level of standard.

      1307 - Dynamically Switched Link Control Protocol

             An Experimental Protocol.

      1306 - Experiences Supporting By-Request Circuit-Switched T3
             Networks

             This is an information document and does not specify any
             level of standard.

      1304 - Definitions of Managed Objects for the SIP Interface Type

             A Proposed Standard protocol.

      1303 - A Convention for Describing SNMP-based Agents

             This is an information document and does not specify any



<span class="grey">Internet Activities Board                                      [Page 14]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-15" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


             level of standard.

      1302 - Building a Network Information Services Infrastructure

             This is an information document and does not specify any
             level of standard.

      1301 - Multicast Transport Protocol

             This is an information document and does not specify any
             level of standard.

      1300 - Remembrances of Things Past

             This is an information document and does not specify any
             level of standard.

      1298 - SNMP over IPX

             This is an information document and does not specify any
             level of standard.

      1297 - NOC Internal Integrated Trouble Ticket System Functional
             Specification Wishlist ("NOC TT REQUIREMENTS")

             This is an information document and does not specify any
             level of standard.

      1296 - Internet Growth (1981-1991)

             This is an information document and does not specify any
             level of standard.

      1295 - User Bill of Rights for entries
             and listings in the Public Directory

             This is an information document and does not specify any
             level of standard.

      1294 - Multiprotocol Interconnect over Frame Relay

             A Proposed Standard protocol.

      1293 - Inverse Address Resolution Protocol

             A Proposed Standard protocol.





<span class="grey">Internet Activities Board                                      [Page 15]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-16" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      1292 - A Catalog of Available X.500 Implementations

             This is an information document and does not specify any
             level of standard.

      1291 - Mid-Level Networks - Potential Technical Services

             This is an information document and does not specify any
             level of standard.

      1290 - There's Gold in them thar Networks!  or
             Searching for Treasure in all the Wrong Places

             This is an information document and does not specify any
             level of standard.

      1289 - DECnet Phase IV MIB Extensions

             A Proposed Standard protocol.

      1288 - The Finger User Information Protocol

             A Draft Standard protocol.

      1287 - Towards the Future Internet Architecture

             This is an information document and does not specify any
             level of standard.

      1286 - Definitions of Managed Objects for Bridges

             A Proposed Standard protocol.

      1285 - FDDI Management Information Base

             A Proposed Standard protocol.

      1284 - Definitions of Managed Objects for the Ethernet-like
             Interface Types

             A Proposed Standard protocol.

      1283 - SNMP over OSI

             An Experimental protocol.






<span class="grey">Internet Activities Board                                      [Page 16]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-17" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      1282 - BSD Rlogin

             This is an information document and does not specify any
             level of standard.

      1281 - Guidelines for the Secure Operation of the Internet

             This is an information document and does not specify any
             level of standard.

      1280 - This memo.

      1279 - X.500 and Domains

             An Experimental protocol.

      1278 - A string encoding of Presentation Address

             This is an information document and does not specify any
             level of standard.

      1277 - Encoding Network Addresses to support operation over non-
             OSI lower layers

             A Proposed Standard protocol.

      1276 - Replication and Distributed Operations extensions to
             provide an Internet Directory using X.500

             A Proposed Standard protocol.

      1275 - Replication Requirements to provide an Internet Directory
             using X.500

             This is an information document and does not specify any
             level of standard.

      1274 - The COSINE and Internet X.500 Schema

             A Proposed Standard protocol.

      1273 - A Measurement Study of Changes in Service-Level
             Reachability  in the Global TCP/IP Internet: Goals,
             Experimental Design, Implementation, and Policy
             Considerations

             This is an information document and does not specify any
             level of standard.



<span class="grey">Internet Activities Board                                      [Page 17]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-18" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      1272 - Internet Accounting: Background

             This is an information document and does not specify any
             level of standard.

      1271 - Remote Network Monitoring Management Information Base

             A Proposed Standard protocol.

      1270 - SNMP Communications Services

             This is an information document and does not specify any
             level of standard.

      1269 - Definitions of Managed Objects for the Border Gateway
             Protocol (Version 3)

             A Proposed Standard protocol.

      1268 - Application of the Border Gateway Protocol in the Internet

             A Draft Standard protocol.

      1267 - A Border Gateway Protocol 3 (BGP-3)

             A Draft Standard protocol.

      1266 - Experience with the BGP Protocol

             This is an information document and does not specify any
             level of standard.

      1265 - BGP Protocol Analysis

             This is an information document and does not specify any
             level of standard.

      1264 - Internet Engineering Task Force - Internet Routing Protocol
             Standardization Criteria

             This is an information document and does not specify any
             level of standard.

      1263 - TCP Extensions Considered Harmful

             This is an information document and does not specify any
             level of standard.




<span class="grey">Internet Activities Board                                      [Page 18]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-19" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      1262 - Guidelines for Internet Measurement Activities

             This is an information document and does not specify any
             level of standard.

      1261 - Transition of NIC Services

             This is an information document and does not specify any
             level of standard.

      1260 - Not yet issued.

      1259 - Building The Open Road: The NREN As Test-Bed For
             The National Public Network

             This is an information document and does not specify any
             level of standard.

      1258 - BSD Rlogin

             This is an information document and does not specify any
             level of standard.  Obsoleted by <a href="./rfc1282">RFC 1282</a>.

      1257 - Isochronous Applications Do Not Require Jitter-Controlled
             Networks

             This is an information document and does not specify any
             level of standard.

      1256 - ICMP Router Discovery Messages

             A Proposed Standard protocol.

      1255 - A Naming Scheme for c=US

             This is an information document and does not specify any
             level of standard.

      1254 - Gateway Congestion Control Survey

             This is an information document and does not specify any
             level of standard.

      1253 - OSPF Version 2 Management Information Base

             A Proposed Standard protocol.





<span class="grey">Internet Activities Board                                      [Page 19]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-20" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      1108 - U.S. Department of Defense Security Options for the
             Internet Protocol

             A Proposed Standard protocol.

      1099 - Request for Comments Summary RFC Numbers 1000-1099

             This is an information document and does not specify any
             level of standard.

<span class="h4"><a class="selflink" id="section-6.1.2" href="#section-6.1.2">6.1.2</a>.  Other Changes:</span>

   <a href="./rfc1156">RFC 1156</a>, MIB-I is no longer referenced since it is completely
   replaced by <a href="./rfc1213">RFC 1213</a>, MIB-II.





































<span class="grey">Internet Activities Board                                      [Page 20]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-21" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-6.2" href="#section-6.2">6.2</a>.  Standard Protocols</span>

Protocol   Name                                      Status    RFC STD *
========   =====================================     ======== ==== === =
--------   IAB Official Protocol Standards           Req      1280   1 *
--------   Assigned Numbers                          Req      1060   2 *
--------   Host Requirements - Communications        Req      1122   3 *
--------   Host Requirements - Applications          Req      1123   3 *
--------   Gateway Requirements                      Req      1009   4 *
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 *
MAIL       Format of Electronic Mail Messages        Rec       822  11 *
CONTENT    Content Type Header Field                 Rec      1049  11 *
NTP        Network Time Protocol                     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 *
MIB-II     Management Information Base-II            Rec      1213  17 *
EGP        Exterior Gateway Protocol                 Rec       904  18 *
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 *

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

Applicability Statements:

   IGMP -- The Internet Activities Board intends to move towards general
   adoption of IP multicasting, as a more efficient solution than
   broadcasting for many applications.  The host interface has been
   standardized in <a href="./rfc1112">RFC-1112</a>; however, multicast-routing gateways are in



<span class="grey">Internet Activities Board                                      [Page 21]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-22" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   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 Activities 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>).

<span class="h3"><a class="selflink" id="section-6.3" href="#section-6.3">6.3</a>.  Network-Specific Standard Protocols</span>

Protocol   Name                                     State   Status  RFC
========   =====================================    ======= ====== =====
IP-FR      Multiprotocol over Frame Relay           Prop    Ele    1294*
IP-SMDS    Transmission of IP Datagrams over SMDS   Prop    Ele    1209*
ARP        Address Resolution Protocol              Std     Ele     826*
RARP       A Reverse Address Resolution Protocol    Std     Ele     903*
IP-ARPA    Internet Protocol on ARPANET             Std     Ele BBN1822*
IP-WB      Internet Protocol on Wideband Network    Std     Ele     907*
IP-X25     Internet Protocol on X.25 Networks       Std     Ele     877*
IP-E       Internet Protocol on Ethernet Networks   Std     Ele     894*
IP-EE      Internet Protocol on Exp. Ethernet Nets  Std     Ele     895*
IP-IEEE    Internet Protocol on IEEE 802            Std     Ele    1042*
IP-DC      Internet Protocol on DC Networks         Std     Ele     891*
IP-HC      Internet Protocol on Hyperchannel        Std     Ele    1044*
IP-ARC     Internet Protocol on ARCNET              Std     Ele    1051*
IP-SLIP    Transmission of IP over Serial Lines     Std     Ele    1055*
IP-NETBIOS Transmission of IP over NETBIOS          Std     Ele    1088*
IP-IPX     Transmission of 802.2 over IPX Networks  Std     Ele    1132*
IP-FDDI    Transmission of IP over FDDI             Draft   Ele    1188*

[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.



<span class="grey">Internet Activities Board                                      [Page 22]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-23" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-6.4" href="#section-6.4">6.4</a>.  Draft Standard Protocols</span>

Protocol   Name                                     Status          RFC
========   =====================================    ============== =====
FINGER     Finger Protocol                          Elective       1288*
BGP-APP    Application of BGP                       Elective       1268*
BGP3       Border Gateway Protocol 3 (BGP-3)        Elective       1267*
OSPF2      Open Shortest Path First Routing V2      Elective       1247
POP3       Post Office Protocol, Version 3          Elective       1225
Concise-MIB Concise MIB Definitions                 Elective       1212
IP-FDDI    Internet Protocol on FDDI Networks       Elective       1188
TOPT-LINE  Telnet Linemode Option                   Elective       1184
PPP        Point to Point Protocol                  Elective       1171
--------   Mail Privacy: Procedures                 Elective       1113
--------   Mail Privacy: Key Management             Elective       1114
--------   Mail Privacy: Algorithms                 Elective       1115
BOOTP      Bootstrap Protocol                      Recommended 951,1084
RIP        Routing Information Protocol             Elective       1058
TP-TCP     ISO Transport Service on top of the TCP  Elective       1006
NICNAME    WhoIs Protocol                           Elective        954
TFTP       Trivial File Transfer Protocol           Elective        783

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

Applicability Statements:

   RIP -- The Routing Information Protocol (RIP) is widely implemented
   and used in the Internet.  However, both implementors and users
   should be aware that RIP has some serious technical limitations as a
   routing protocol.  The IETF is currently developing several
   candidates for a new standard "open" routing protocol with better
   properties than RIP.  The IAB urges the Internet community to track
   these developments, and to implement the new protocol when it is
   standardized; improved Internet service will result for many users.

   TP-TCP -- As OSI protocols become more widely implemented and used,
   there will be an increasing need to support interoperation with the
   TCP/IP protocols.  The Internet Engineering Task Force is formulating
   strategies for interoperation.  <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".




<span class="grey">Internet Activities Board                                      [Page 23]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-24" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   PPP -- Point to Point Protocol is a method of sending IP over serial
   lines, which are a type of physical network.  It is anticipated that
   PPP will be advanced to the network-specific standard protocol state
   in the future.

<span class="h3"><a class="selflink" id="section-6.5" href="#section-6.5">6.5</a>.  Proposed Standard Protocols</span>

Protocol   Name                                     Status          RFC
========   =====================================    ============== =====
SIP-MIB    SIP Interface Type MIB                   Elective       1304*
IARP       Inverse Address Resolution Protocol      Elective       1293*
DECNET-MIB DECNET MIB                               Elective       1289*
BRIDGE-MIB BRIDGE-MIB                               Elective       1286*
FDDI-MIB   FDDI-MIB                                 Elective       1285*
ETHER-MIB  Ethernet MIB                             Elective       1284*
-------    Encoding Network Addresses...            Elective       1277*
-------    Replication and Distributed Operations.. Elective       1276*
-------    Replication Requirements...              Elective       1275*
-------    COSINE and Internet X.500 Schema...      Elective       1274*
RMON-MIB   Remote Network Monitoring MIB            Elective       1271*
BGP-MIB    Border Gateway Protocol MIB (Version 3)  Elective       1269*
ICMP-ROUT  ICMP Router Discovery Messages           Elective       1256*
OSPF-MIB   OSPF Version 2 MIB                       Elective       1253*
IPSO       DoD Security Options for IP              Elective       1108*
AT-MIB     Appletalk MIB                            Elective       1243
OSI-UDP    OSI TS on UDP                            Elective       1240
STD-MIBs   Reassignment of Exp MIBs to Std MIBs     Elective       1239
OSI-NSAP   Guidelines for OSI NSAP Allocation       Elective       1237
IPX-IP     Tunneling IPX Traffic through IP Nets    Elective       1234
DS3-MIB    DS3 Interface Objects                    Elective       1233
DS1-MIB    DS1 Interface Objects                    Elective       1232
802.5-MIB  IEEE 802.5 Token Ring MIB                Elective       1231
802.4-MIP  IEEE 802.4 Token Bus MIB                 Elective       1230
GINT-MIB   Extensions to the Generic-Interface MIB  Elective       1229
PPP-EXT    PPP Extensions for Bridging              Elective       1220
OIM-MIB-II OSI Internet Management: MIB-II          Elective       1214
IP-SMDS    IP Datagrams over the SMDS Service       Elective       1209
IP-ARCNET  Transmitting IP Traffic over ARCNET Nets Elective       1201
IS-IS      OSI IS-IS for TCP/IP Dual Environments   Elective       1195
IP-MTU     Path MTU Discovery                       Elective       1191
CMOT       Common Management Information Services.. Elective       1189
PPP-INIT   PPP Initial Configuration Options        Elective       1172
IP-CMPRS   Compressing TCP/IP Headers               Elective       1144
ISO-TS-ECHO Echo for ISO-8473                       Elective       1139
SUN-NFS    Network File System Protocol             Elective       1094
SUN-RPC    Remote Procedure Call Protocol           Elective       1057
PCMAIL     Pcmail Transport Protocol                Elective       1056
NFILE      A File Access Protocol                   Elective       1037



<span class="grey">Internet Activities Board                                      [Page 24]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-25" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


-------    Mapping between X.400(84) and <a href="./rfc822">RFC-822</a>    Elective   987,1026
NNTP       Network News Transfer Protocol           Elective        977
HOSTNAME   HOSTNAME Protocol                        Elective        953
SFTP       Simple File Transfer Protocol            Elective        913
RLP        Resource Location Protocol               Elective        887
SUPDUP     SUPDUP Protocol                          Elective        734

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

Applicability Statements:

   IP-SMDS and IP-ARCNET -- These define methods of sending IP over
   particular network types.  It is anticipated that these will be
   advanced to the network specific standard protocol state in the
   future.

<span class="h3"><a class="selflink" id="section-6.6" href="#section-6.6">6.6</a>.  Telnet Options</span>

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  Prop  Ele     652
TOPT-OHT   Output Horizontal Tabstops         11  Prop  Ele     653
TOPT-OHTD  Output Horizontal Tab Disposition  12  Prop  Ele     654
TOPT-OFD   Output Formfeed Disposition        13  Prop  Ele     655
TOPT-OVT   Output Vertical Tabstops           14  Prop  Ele     656
TOPT-OVTD  Output Vertical Tab Disposition    15  Prop  Ele     657
TOPT-OLD   Output Linefeed Disposition        16  Prop  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     734
TOPT-SUPO  SUPDUP Output                      22  Prop  Ele     749
TOPT-SNDL  Send Location                      23  Prop  Ele     779



<span class="grey">Internet Activities Board                                      [Page 25]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-26" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


TOPT-TERM  Terminal Type                      24  Prop  Ele     930
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    1080
TOPT-LINE  Linemode                           34  Draft Ele    1184
TOPT-XDL   X Display Location                 35  Prop  Ele    1096
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.]

<span class="h3"><a class="selflink" id="section-6.7" href="#section-6.7">6.7</a>.  Experimental Protocols</span>

Protocol   Name                                     Status          RFC
========   =====================================    ============== =====
DSLCP      Dynamically Switched Link Control        Elective       1307*
--------   X.500 and Domains                        Elective       1279*
SNMP-OSI   SNMP over OSI                            Elective       1283*
IN-ENCAP   Internet Encapsulation Protocol          Limited Use    1241
CLNS-MIB   CLNS-MIB                                 Limited Use    1238
CFDP       Coherent File Distribution Protocol      Limited Use    1235
SNMP-DPI   SNMP Distributed Program Interface       Limited Use    1228
SNMP-MUX   SNMP MUX Protocol and MIB                Limited Use    1227
IP-AX25    IP Encapsulation of AX.25 Frames         Limited Use    1226
ALERTS     Managing Asynchronously Generated Alerts Limited Use    1224
MPP        Message Posting Protocol                 Limited Use    1204
ST-II      Stream Protocol                          Limited Use    1190
SNMP-BULK  Bulk Table Retrieval with the SNMP       Limited Use    1187
DNS-RR     New DNS RR Definitions                   Limited Use    1183
NTP-OSI    NTP over OSI Remote Operations           Limited Use    1165
MSP        Message Send Protocol                    Limited Use    1159
EHF-MAIL   Encoding Header Field for Mail           Elective       1154
DMF-MAIL   Digest Message Format for Mail           Elective       1153
RDP        Reliable Data Protocol                  Limited Use 908,1151
--------   Mapping between X.400(88) and <a href="./rfc822">RFC-822</a>    Elective       1148
TCP-ACO    TCP Alternate Checksum Option           Not Recommended 1146
--------   Mapping full 822 to Restricted 822       Elective       1137
IP-DVMRP   IP Distance Vector Multicast Routing    Not Recommended 1075
TCP-LDP    TCP Extensions for Long Delay Paths      Limited Use    1072
IMAP2      Interactive Mail Access Protocol       Limited Use 1176,1064
IMAP3      Interactive Mail Access Protocol         Limited Use    1203
VMTP       Versatile Message Transaction Protocol   Elective       1045



<span class="grey">Internet Activities Board                                      [Page 26]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-27" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


COOKIE-JAR Authentication Scheme                   Not Recommended 1004
NETBLT     Bulk Data Transfer Protocol              Not Recommended 998
IRTP       Internet Reliable Transaction Protocol   Not Recommended 938
AUTH       Authentication Service                   Not Recommended 931
LDP        Loader Debugger Protocol                 Not Recommended 909
NVP-II     Network Voice Protocol                  Limited Use ISI-memo
PVP        Packet Video Protocol                   Limited Use ISI-memo

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

<span class="h3"><a class="selflink" id="section-6.8" href="#section-6.8">6.8</a>.  Informational Protocols</span>

Protocol   Name                                    Status           RFC
=======    ====================================    =============== =====
MTP        Multicast Transport Protocol            Elective        1301*
SNMP-IPX   SNMP over IPX                           Elective        1298*
BSD Login  BSD Login                               Elective        1282*
DIXIE      DIXIE Protocol Specification            Limited Use     1249
IP-X.121   IP to X.121 Address Mapping for DDN     Limited Use     1236
OSI-HYPER  OSI and LLC1 on HYPERchannel            Limited Use     1223
HAP2       Host Access Protocol                    Limited Use     1221
SUBNETASGN On the Assignment of Subnet Numbers     Limited Use     1219
SNMP-TRAPS Defining Traps for use with SNMP        Limited Use     1215
DAS        Directory Assistance Service            Limited Use     1202
MD4        MD4 Message Digest Algorithm            Limited Use     1186
LPDP       Line Printer Daemon Protocol            Limited Use     1179

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]





















<span class="grey">Internet Activities Board                                      [Page 27]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-28" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-6.9" href="#section-6.9">6.9</a>.  Historic Protocols</span>

Protocol   Name                                     Status          RFC
=======    =====================================    ============== =====
BGP        Border Gateway Protocol                  Elective  1163,1164*
MIB-I      MIB-I                                   Not Recommended 1156*
SGMP       Simple Gateway Monitoring Protocol      Not Recommended 1028
HEMS       High Level Entity Management Protocol   Not Recommended 1021
STATSRV    Statistics Server                        Not Recommended 996
POP2       Post Office Protocol, Version 2          Not Recommended 937
RATP       Reliable Asynchronous Transfer Protocol  Not Recommended 916
HFEP       Host - Front End Protocol                Not Recommended 929
THINWIRE   Thinwire Protocol                        Not Recommended 914
HMP        Host Monitoring Protocol                 Not Recommended 869
GGP        Gateway Gateway Protocol                 Not Recommended 823
RTELNET    Remote Telnet Service                    Not Recommended 818
CLOCK      DCNET Time Server Protocol               Not Recommended 778
MPM        Internet Message Protocol                Not Recommended 759
NETRJS     Remote Job Service                       Not Recommended 740
NETED      Network Standard Text Editor             Not Recommended 569
RJE        Remote Job Entry                         Not Recommended 407
XNET       Cross Net Debugger                   Not Recommended IEN-158
NAMESERVER Host Name Server Protocol            Not Recommended IEN-116
MUX        Multiplexing Protocol                 Not Recommended IEN-90
GRAPHICS   Graphics Protocol                  Not Recommended NIC-24308

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>.  Contacts</span>

<span class="h3"><a class="selflink" id="section-7.1" href="#section-7.1">7.1</a>.  IAB, IETF, and IRTF Contacts</span>

   7.1.1.  Internet Activities Board (IAB) Contact

   Please send your comments about this list of protocols and especially
   about the Draft Standard Protocols to the Internet Activities Board
   care of Bob Braden, IAB Executive Director.













<span class="grey">Internet Activities Board                                      [Page 28]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-29" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


      Contacts:

         Bob Braden
         Executive Director of the IAB
         USC/Information Sciences Institute
         4676 Admiralty Way
         Marina del Rey, CA  90292-6695

         1-310-822-1511

         Braden@ISI.EDU

         A. Lyman Chapin
         Chair of the IAB
         Bolt, Beranek &amp; Newman
         Mail Stop 20/5b
         150 Cambridge Park Drive
         Cambridge, MA 02140

         1-617-873-3133

         Lyman@BBN.COM

   7.1.2.  Internet Engineering Task Force (IETF) Contact

      Contacts:

         Phill Gross
         Chair of the IETF
         Advanced Network and Services
         100 Clearbrook Road
         Elmsford, NY  10523

         1-914-789-5300

         PGross@NRI.RESTON.VA.US

         Greg Vaudreuil
         IESG Secretary
         Corporation for National Research Initiatives
         1895 Preston White Drive, Suite 100
         Reston, VA 22091

         1-703-620-8990

         gvaudre@NRI.RESTON.VA.US





<span class="grey">Internet Activities Board                                      [Page 29]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-30" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


   7.1.3.  Internet Research Task Force (IRTF) Contact

      Contact:

         Jon Postel
         Chair of the IRTF
         USC/Information Sciences Institute
         4676 Admiralty Way
         Marina del Rey, CA  90292-6695

         1-310-822-1511

         Postel@ISI.EDU


<span class="h3"><a class="selflink" id="section-7.2" href="#section-7.2">7.2</a>.  Internet Assigned Numbers Authority Contact</span>

      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@ISI.EDU

   The protocol standards are managed for the IAB by the Internet
   Assigned Numbers Authority.

   Please refer to the document "Assigned Numbers" (<a href="./rfc1060">RFC-1060</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 "Gateway Requirements" (<a href="./rfc1009">RFC-1009</a>).

      How to obtain the most recent edition of this "IAB Official
      Protocol Standards" memo:

         The file "in-notes/iab-standards.txt" may be copied via FTP
         from the VENERA.ISI.EDU computer using the FTP username
         "anonymous" and FTP password "guest".







<span class="grey">Internet Activities Board                                      [Page 30]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-31" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-7.3" href="#section-7.3">7.3</a>.  Request for Comments Editor Contact</span>

      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.

<span class="h3"><a class="selflink" id="section-7.4" href="#section-7.4">7.4</a>.  The Network Information Center and</span>
<span class="h3">      Requests for Comments Distribution Contact</span>

      Contact:

         Government Systems, Inc.
         Attn: Network Information Center
         14200 Park Meadow Drive
         Suite 200
         Chantilly, VA  22021

         Help Desk Hours of Operation: 7:00 am to 7:00 pm Eastern Time

         1-800-365-3642 (1-800-365-DNIC)
         1-703-802-4535
         Fax Number: 1-703-802-8376

         NIC@NIC.DDN.MIL

   The Network Information Center (NIC) provides many information
   services for the Internet community.  Among them is maintaining the
   Requests for Comments (RFC) library.









<span class="grey">Internet Activities Board                                      [Page 31]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-32" ></span>
<span class="grey"><a href="./rfc1280">RFC 1280</a>                     IAB Standards                    March 1992</span>


<span class="h3"><a class="selflink" id="section-7.5" href="#section-7.5">7.5</a>.  Sources for Requests for Comments</span>

   Details on obtaining 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

<span class="h3"><a class="selflink" id="section-7.6" href="#section-7.6">7.6</a> SRI Network Information Systems Center</span>

   To obtain documentation from the SRI Network Information Systems
   Center (NISC):

   EMail: nisc@nisc.sri.com
   Phone: (415) 859-6387, (415) 859-3695
   Fax: (415) 859-6028

<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>.  Security Considerations</span>

   Security issues are not addressed in this memo.

<span class="h2"><a class="selflink" id="section-9" href="#section-9">9</a>.  Author's Address</span>

   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
















Internet Activities Board                                      [Page 32]
</pre>