RFC 3543 (rfc3543) - Page 1 of 33


Registration Revocation in Mobile IPv4



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Network Working Group                                           S. Glass
Request for Comments: 3543                              Sun Microsystems
Category: Standards Track                                     M. Chandra
                                                           Cisco Systems
                                                             August 2003


                 Registration Revocation in 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 (2003).  All Rights Reserved.

Abstract

   This document defines a Mobile IPv4 Registration Revocation mechanism
   whereby a mobility agent involved in providing Mobile IP services to
   a mobile node can notify the other mobility agent providing Mobile IP
   services to the same mobile node of the termination of this
   registration.  The mechanism is also usable by a home agent to notify
   a co-located mobile node of the termination of its binding as well.
   Moreover, the mechanism provides for this notification to be
   acknowledged.  A signaling mechanism already defined by the Mobile
   IPv4 protocol is leveraged as a way to inform a mobile node of the
   revocation of its binding.

Table of Contents

   1.  Introduction and Applicability . . . . . . . . . . . . . . . .  2
   2.  Terminology. . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Registration Revocation Extensions and Messages. . . . . . . .  4
       3.1.  Advertising Registration Revocation Support. . . . . . .  5
       3.2.  Revocation Support Extension . . . . . . . . . . . . . .  6
       3.3.  Registration Revocation Message. . . . . . . . . . . . .  8
       3.4.  Registration Revocation Acknowledgment Message . . . . . 11
       3.5.  Replay Protection. . . . . . . . . . . . . . . . . . . . 14
   4.  Registration Revocation Overview . . . . . . . . . . . . . . . 15
       4.1.  Mobile Node Notification . . . . . . . . . . . . . . . . 15
       4.2.  Registration Revocation Mechanism - Agent Notification . 17
             4.2.1.  Negotiating Revocation Support . . . . . . . . . 17



Glass & Chandra             Standards Track


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