Network Working Group                        Internet Architecture Board
Request for Comments: 2200                             J. Postel, Editor


                  INTERNET OFFICIAL PROTOCOL STANDARDS(‘±‚«)


3.  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 Section 3.4.

3.1.  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
   RFC-1700.

3.2.  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 RFC-1812.

3.3.  Host Requirements

   This pair of documents reviews and updates the specifications that
   apply to hosts, and it supplies guidance and clarification for any
   ambiguities.  Host Requirements was issued as RFC-1122 and RFC-1123.

3.4.  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   The DoD MIL-STD Internet specifications are out of date and have been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
   from http://www-jta.itsi.disa.mil.