Browse Prior Art Database

IP Mobility Support for IPv4 (RFC3344)

IP.com Disclosure Number: IPCOM000009298D
Original Publication Date: 2002-Aug-01
Included in the Prior Art Database: 2002-Aug-15

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Perkins: AUTHOR [+2]

Abstract

This document specifies protocol enhancements that allow transparent routing of IP datagrams to mobile nodes in the Internet. Each mobile node is always identified by its home address, regardless of its current point of attachment to the Internet. While situated away from its home, a mobile node is also associated with a care-of address, which provides information about its current point of attachment to the Internet. The protocol provides for registering the care-of address with a home agent. The home agent sends datagrams destined for the mobile node through a tunnel to the care- of address. After arriving at the end of the tunnel, each datagram is then delivered to the mobile node.

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Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � C. Perkins, Ed.

Request for Comments: 3344� � � � � � � � � � � � � � � � � � � � � � � � Nokia Research Center

Obsoletes: 3220� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � August 2002

Category: Standards Track

� � � � � � � � � � � � � � � � � � � � � IP Mobility Support for 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 (2002). � All Rights Reserved.

Abstract

� � This document specifies protocol enhancements that allow transparent

� � routing of IP datagrams to mobile nodes in the Internet.� Each mobile

� � node is always identified by its home address, regardless of its

� � current point of attachment to the Internet.� While situated away

� � from its home, a mobile node is also associated with a care-of

� � address, which provides information about its current point of

� � attachment to the Internet.� The protocol provides for registering

� � the care-of address with a home agent.� The home agent sends

� � datagrams destined for the mobile node through a tunnel to the care-

� � of address.� After arriving at the end of the tunnel, each datagram

� � is then delivered to the mobile node.

Contents

� � 1. Introduction� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

� � � � � � 1.1. Protocol Requirements . . . . . . . . . . . . . . . . .� � � 4

� � � � � � 1.2. Goals . . . . . . . . . . . . . . . . . . . . . . . . .� � � 4

� � � � � � 1.3. Assumptions . . . . . . . . . . . . . . . . . . . . . .� � � 5

� � � � � � 1.4. Applicability . . . . . . . . . . . . . . . . . . . . .� � � 5

� � � � � � 1.5. New Architectural Entities� . . . . . . . . . . . . . .� � � 5

� � � � � � 1.6. Terminology . . . . . . . . . . . . . . . . . . . . . .� � � 6

� � � � � � 1.7. Protocol Overview . . . . . . . . . . . . . . . . . . .� � � 9

� � � � � � 1.8. Message Format and Protocol Extensibility . . . . . . .� � 13

� � � � � � 1.9. Type-Length-Value Extension Format for Mobile IP

� � � � � � � � � � � � � � Extensions . . . . . . . . . . . . . . . . . . . . .� � 15

� � � � � 1.10. Long Extension Format . . . . . . . . . . . . . . . . .� � 16

Perkins� � � � � � � � � � � � � � � � � � � � Standards Track� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3344� � � � � � � � � � � � � IP Mobility Support for IPv4� � � � � � � � � � August 2002

� � � � � 1.11. Short Extension Format� . . . . . . . . . . . . . . . .� � 16

� � 2. Agent Discovery� � � � � � � � � � � � � � � � � � � � � � � � � � �...