RFC 3171 (rfc3171) - Page 1 of 8


IANA Guidelines for IPv4 Multicast Address Assignments



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Network Working Group                                         Z. Albanna
Request for Comments: 3171                              Juniper Networks
BCP: 51                                                      K. Almeroth
Category: Best Current Practice                                     UCSB
                                                                D. Meyer
                                                                  Sprint
                                                             M. Schipper
                                                                    IANA
                                                             August 2001


         IANA Guidelines for IPv4 Multicast Address Assignments

Status of this Memo

   This document specifies an Internet Best Current Practices for the
   Internet Community, and requests discussion and suggestions for
   improvements.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2001).  All Rights Reserved.

Abstract

   This memo provides guidance for the Internet Assigned Numbers
   Authority (IANA) in assigning IPv4 multicast addresses.

1. Introduction

   The Internet Assigned Numbers Authority (IANA) (www.iana.org) is
   charged with allocating parameter values for fields in protocols
   which have been designed, created or are maintained by the Internet
   Engineering Task Force (IETF).  RFC 2780 [RFC 2780] provides the IANA
   guidance in the assignment of parameters for fields in newly
   developed protocols.  This memo expands on section 4.4.2 of RFC 2780
   and attempts to codify existing IANA practice used in the assignment
   IPv4 multicast addresses.

   The terms "Specification Required", "Expert Review", "IESG Approval",
   "IETF Consensus", and "Standards Action", are used in this memo to
   refer to the processes described in [RFC 2434].  The keywords MUST,
   MUST NOT, MAY, OPTIONAL, REQUIRED, RECOMMENDED, SHALL, SHALL NOT,
   SHOULD, SHOULD NOT are to be interpreted as defined in RFC 2119
   [RFC 2119].






Albanna, et al.          Best Current Practice


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