Mobile-IPv4 Configuration Option for PPP IPCP
RFC 2290
Document | Type |
RFC - Proposed Standard
(February 1998; No errata)
Updated by RFC 2794
Updates RFC 2002
|
|
---|---|---|---|
Authors | Steven Glass , Jim Solomon | ||
Last updated | 2013-03-02 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 2290 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group J. Solomon Request for Comments: 2290 Motorola Updates: 2002 S. Glass Category: Standards Track FTP Software February 1998 Mobile-IPv4 Configuration Option for PPP IPCP 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 (1998). All Rights Reserved. Abstract Mobile IP [RFC 2002] defines media-independent procedures by which a Mobile Node can maintain existing transport and application-layer connections despite changing its point-of-attachment to the Internet and without changing its IP address. PPP [RFC 1661] provides a standard method for transporting multi-protocol packets over point- to-point links. As currently specified, Mobile IP Foreign Agents which support Mobile Node connections via PPP can do so only by first assigning unique addresses to those Mobile Nodes, defeating one of the primary advantages of Foreign Agents. This documents corrects this problem by defining the Mobile-IPv4 Configuration Option to the Internet Protocol Control Protocol (IPCP) [RFC 1332]. Using this option, two peers can communicate their support for Mobile IP during the IPCP phase of PPP. Familiarity with Mobile IP [RFC 2002], IPCP [RFC 1332], and PPP [RFC 1661] is assumed. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Specification Language . . . . . . . . . . . . . . . . . 2 1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . 2 1.3. Problem Statement . . . . . . . . . . . . . . . . . . . 3 1.4. Requirements . . . . . . . . . . . . . . . . . . . . . . 5 2. Mobile-IPv4 Configuration Option . . . . . . . . . . . . . . . 6 2.1. Option Format . . . . . . . . . . . . . . . . . . . . . 6 2.2. Overview . . . . . . . . . . . . . . . . . . . . . . . . 7 Solomon & Glass Standards Track [Page 1] RFC 2290 Mobile-IPv4 Option for PPP IPCP February 1998 2.3. High-Level Requirements for Non-Mobile-Nodes . . . . . . 7 2.4. High-Level Requirements for Mobile Nodes . . . . . . . . 8 2.5. Detailed Description . . . . . . . . . . . . . . . . . . 8 2.6. Example Scenarios . . . . . . . . . . . . . . . . . . . 12 3. Additional Requirements . . . . . . . . . . . . . . . . . . . 14 3.1. Other IPCP Options . . . . . . . . . . . . . . . . . . . 14 3.2. Move Detection . . . . . . . . . . . . . . . . . . . . . 14 4. Security Considerations . . . . . . . . . . . . . . . . . . . 15 5. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 16 7. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 16 8. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 17 1. Introduction Mobile IP [RFC 2002] defines protocols and procedures by which packets can be routed to a mobile node, regardless of its current point-of-attachment to the Internet, and without changing its IP address. Mobile IP is designed to run over any type of media and any type of data link-layer. However, the interaction between Mobile IP and PPP is currently underspecified and generally results in an inappropriate application of Mobile IP when mobile nodes connect to the Internet via PPP. This document defines proper interaction between a mobile node [RFC 2002] and a peer through which the mobile node connects to the Internet using PPP. This requires the definition of a new option for IPCP [RFC 1332], named the "Mobile-IPv4" Configuration Option, which is defined in this document. The mobile node and the peer use this option to negotiate the appropriate use of Mobile IP over the PPP link. The Mobile-IPv4 option defined in this document is intended to work in conjunction with the existing IP-Address option [RFC 1332]. 1.1. Specification Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119. 1.2. Terminology This document uses the following terms as defined in [RFC 2002]: Solomon & Glass Standards Track [Page 2]Show full document text