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Mobile IP Network Access Identifier Extension for IPv4 (RFC2794)

IP.com Disclosure Number: IPCOM000003393D
Original Publication Date: 2000-Mar-01
Included in the Prior Art Database: 2019-Feb-10
Document File: 9 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Calhoun: AUTHOR [+1]

Related Documents

10.17487/RFC2794: DOI

Abstract

Our proposal defines a way for the mobile node to identify itself, by including the NAI along with the Mobile IP Registration Request. This memo also updates RFC 2290 which specifies the Mobile-IPv4 Configuration option for IPCP, by allowing the Mobile Node's Home Address field of this option to be zero. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 20% of the total text.

Network Working Group P. Calhoun Request for Comments: 2794 Sun Microsystems Laboratories Updates: 2290 C. Perkins Category: Standards Track Nokia Research Center March 2000

Mobile IP Network Access Identifier Extension 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 (2000). All Rights Reserved.

Abstract

AAA servers are in use within the Internet today to provide authentication and authorization services for dial-up computers. Such services are likely to be equally valuable for mobile nodes using Mobile IP when the nodes are attempting to connect to foreign domains with AAA servers. AAA servers today identify clients by using the Network Access Identifier (NAI). Our proposal defines a way for the mobile node to identify itself, by including the NAI along with the Mobile IP Registration Request. This memo also updates RFC 2290 which specifies the Mobile-IPv4 Configuration option for IPCP, by allowing the Mobile Node’s Home Address field of this option to be zero.

Calhoun & Perkins Standards Track [Page 1]

RFC 2794 Mobile Node NAI March 2000

1. Introduction

AAA servers are in use within the Internet today to provide authentication and authorization services for dial-up computers. Such services are likely to be equally valuable for mobile nodes using Mobile IP when the nodes are attempting to connect to foreign domains with AAA servers. AAA servers today identify clients by using the Network Access Identifier (NAI) [1]. This document specifies the Mobile Node NAI extension to the Mobile IP Registration Request [7] message from the mobile node.

Since the NAI is typically used to uniquely identify the mobile node, the mobile node’s home address is not always necessary to provide that function. Thus, it is possible for a mobile node to authenticate itself, and be authorized for connection to the foreign domain, without even having a home address. A message containing the Mobile Node NAI extension MAY set the Home Address field to zero (0) in the Registration Request, to request that a home address be assigned.

The "Mobile-IPv4 Configuration" option to IPCP has been specified in RFC 2290 [8] for proper interaction between a mobile node and a peer, through which the mobile node connects to the network using PPP. According to that specification the Mobile Node’s Home Address field of the option MUST not be zero. However, in the context of this memo which allows a mobile node to be identified by its NAI and to obtain an address after the PPP phase of connection establishment, the Home Address field is allowed to be zero while maintaining all other aspects of RFC 2290. Interpretation of vari...

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