datatracker.ietf.org
Sign in
Version 5.3.0, 2014-04-12
Report a bug

Experimental Message, Extensions, and Error Codes for Mobile IPv4
RFC 4064

Network Working Group                                         A. Patel
Request for Comments: 4064                                    K. Leung
Category: Standards Track                                Cisco Systems
                                                              May 2005

   Experimental Message, Extensions, and Error Codes for Mobile IPv4

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   Mobile IPv4 message types range from 0 to 255.  This document
   reserves a message type for use by an individual, company, or
   organization for experimental purposes, to evaluate enhancements to
   Mobile IPv4 messages before a formal standards proposal is issued.

Patel & Leung               Standards Track                     [Page 1]
RFC 4064   Experimental Message, Extensions, and Error Codes    May 2005

Table of Contents

   1.  Introduction .................................................  2
   2.  Terminology ..................................................  3
   3.  Experimental Message .........................................  3
   4.  Experimental Extensions ......................................  4
       4.1.  Non-skippable Mobile IPv4 Experimental Extension .......  5
       4.2.  Non-skippable ICMP Router Discovery Exp. Extension .....  5
       4.3.  Skippable Mobile IPv4 Experimental Extension ...........  6
       4.4.  Skippable ICMP Router Discovery Experimental Extension .  6
   5.  Experimental Error Codes .....................................  7
   6.  Mobility Entity Considerations ...............................  7
   7.  IANA Considerations ..........................................  7
       7.1.  New Message Type .......................................  8
       7.2.  New Extension Values ...................................  8
       7.3.  New Error Codes ........................................  8
   8.  Security Considerations ......................................  8
   9.  Backward Compatibility Considerations ........................  9
   10. Acknowledgements..............................................  9
   11. References ...................................................  9
       11.1. Normative References ...................................  9
       11.2. Informative References .................................  9

1.  Introduction

   Mobile IPv4 message types range from 0 to 255.  This document
   reserves a message type for experimental purposes, to evaluate
   enhancements to Mobile IPv4 messages before a formal standards
   proposal is issued.

   Without experimental message capability, one would have to select a
   type value from the range defined for IANA assignment, which may
   result in collisions.

   Within a message, Mobile IP defines a general extension mechanism
   allowing optional information to be carried by Mobile IP control
   messages.  Extensions are not skippable if defined in the range [0-
   127] and are skippable if defined in the range [128-255].  This
   document reserves extension types in both the skippable and non-
   skippable ranges for experimental use.

   Mobile IPv4 defines error codes for use by the FA [64-127] and HA
   [128-192].  This document reserves an error code in both of these
   ranges for experimental use.

   The definition of experimental numbers in this document is made
   according to the recommendation of Section 2.2 of BCP 82, RFC 3692.

Patel & Leung               Standards Track                     [Page 2]
RFC 4064   Experimental Message, Extensions, and Error Codes    May 2005

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [1].

   In addition, this document frequently uses the following terms:

   EXP-MSG-TYPE: A Mobile-IPv4 message number assigned for experimental
   use.  IANA has assigned message number 255 for this.

   EXP-SKIP-EXT-TYPE: A Mobile-IPv4 and ICMP router discovery Agent
   Advertisement extension number assigned for experimental use.  IANA
   has assigned extension number 255 for this.

   EXP-NONSKIP-EXT-TYPE: A Mobile-IPv4 and ICMP router discovery Agent
   Advertisement extension number for experimental use.  IANA has

[include full document text]