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IP Mobility Support (RFC2002)

IP.com Disclosure Number: IPCOM000002556D
Original Publication Date: 1996-Oct-01
Included in the Prior Art Database: 2000-Sep-13

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Perkins: AUTHOR

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.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group C. Perkins, Editor

Request for Comments: 2002 IBM

Category: Standards Track October 1996

IP Mobility Support

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.

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.

Table of Contents

1. Introduction 3

1.1. Protocol Requirements . . . . . . . . . . . . . . . . . . 3

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

1.3. Assumptions . . . . . . . . . . . . . . . . . . . . . . . 4

1.4. Applicability . . . . . . . . . . . . . . . . . . . . . . 4

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

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

1.7. Protocol Overview . . . . . . . . . . . . . . . . . . . . 8

1.8. Specification Language . . . . . . . . . . . . . . . . . 11

1.9. Message Format and Protocol Extensibility . . . . . . . . 12

2. Agent Discovery 14

2.1. Agent Advertisement . . . . . . . . . . . . . . . . . . . 14

2.1.1. Mobility Agent Advertisement Extension . . . . . 16

2.1.2. Prefix-Lengths Extension . . . . . . . . . . . . 18

2.1.3. One-byte Padding Extension . . . . . . . . . . . 19

2.2. Agent Solicitation . . . . . . . . . . . . . . . . . . . 19

2.3. Foreign Agent and Home Agent Considerations . . . . . . . 19

2.3.1. Advertised Router Addresses . . . . . . . . . . . 20

...