Mobility Support for Nimrod : Challenges and Solution Approaches (RFC2103)

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Ramanathan: AUTHOR

Abstract

We discuss the issue of mobility in Nimrod. While a mobility solution is not part of the Nimrod architecture, Nimrod does require that the solution have certain characteristics. We identify the requirements that Nimrod has of any solution for mobility support. We also classify and compare existing approaches for supporting mobility within an internetwork and discuss their advantages and disadvantages. Finally, as an example, we outline the mechanisms to support mobility in Nimrod using the scheme currently being developed within the IETF - namely, the Mobile-IP protocol.

Network Working Group R. Ramanathan

Request for Comments: 2103 BBN Systems and Technologies

Category: Informational February 1997

Mobility Support for Nimrod : Challenges and Solution Approaches

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Abstract

We discuss the issue of mobility in Nimrod. While a mobility

solution is not part of the Nimrod architecture, Nimrod does require

that the solution have certain characteristics. We identify the

requirements that Nimrod has of any solution for mobility support.

We also classify and compare existing approaches for supporting

mobility within an internetwork and discuss their advantages and

disadvantages. Finally, as an example, we outline the mechanisms to

support mobility in Nimrod using the scheme currently being developed

within the IETF - namely, the Mobile-IP protocol.

Table of Contents

1 Introduction................................................... 1

2 Mobility : A Modular Perspective.............................. 2

3 Effects of Mobility............................................ 4

4 Approaches..................................................... 6

5 Solution using IETF Mobile-IP.................................. 10

5.1 Overview .................................................. 10

5.2 Protocol Details........................................... 11

6 Security Considerations........................................ 15

7 Summary........................................................ 16

8 Acknowledgements............................................... 16

9 Author's Address............................................... 17

1 Introduction

The nature of emerging applications makes the support for mobility

essential for any future routing architecture. It is the intent of

Nimrod to allow physical devices as well as networks to be mobile.

Nimrod, as a routing and addressing architecture, does not directly

concern itself with mobility. That is, Nimrod does not propose a

solution for the mobility problem. There are two chief reasons for

this. First, mobility is a non-trivial problem whose implications

and requirements are still not well understood and will perhaps be

understood only when a mobile internetwork is deployed on a large

scale. Second, a number of groups (for instance the Mobile-IP

working group of the IETF) are studying the problem by itself and it

is ...