rfc3543.Registration Revocation in Mobile IPv4.pdfVIP

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.