Network Mobility Support Goals and Requirements
RFC 4886
Document | Type | RFC - Informational (July 2007; Errata) | |
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Author | Thierry Ernst | ||
Last updated | 2020-01-21 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4886 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jari Arkko | ||
Send notices to | (None) |
Network Working Group T. Ernst Request for Comments: 4886 INRIA Category: Informational July 2007 Network Mobility Support Goals and Requirements Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The IETF Trust (2007). Abstract Network mobility arises when a router connecting a network to the Internet dynamically changes its point of attachment to the Internet thereby causing the reachability of the said network to be changed in relation to the fixed Internet topology. Such a type of network is referred to as a mobile network. With appropriate mechanisms, sessions established between nodes in the mobile network and the global Internet can be maintained after the mobile router changes its point of attachment. This document outlines the goals expected from network mobility support and defines the requirements that must be met by the NEMO Basic Support solution. Ernst Informational [Page 1] RFC 4886 NEMO Goals July 2007 Table of Contents 1. Introduction ....................................................2 2. NEMO Working Group Objectives and Methodology ...................3 3. NEMO Support Design Goals .......................................5 3.1. Migration Transparency .....................................5 3.2. Performance Transparency and Seamless Mobility .............5 3.3. Network Mobility Support Transparency ......................5 3.4. Operational Transparency ...................................5 3.5. Arbitrary Configurations ...................................5 3.6. Local Mobility and Global Mobility .........................6 3.7. Scalability ................................................7 3.8. Backward Compatibility .....................................7 3.9. Secure Signaling ...........................................7 3.10. Location Privacy ..........................................8 3.11. IPv4 and NAT Traversal ....................................8 3.12. Minimal Impact on Internet Routing ........................8 4. NEMO Basic Support One-Liner Requirements .......................8 5. Security Considerations ........................................10 6. Acknowledgments ................................................11 7. References .....................................................11 7.1. Normative References ......................................11 7.2. Informative References ....................................11 1. Introduction Network mobility support (see [1] for the related terminology) is concerned with managing the mobility of an entire network, viewed as a single unit that changes its point of attachment to the Internet and thus its reachability in the Internet topology. Such a network is referred to as a mobile network and includes one or more mobile routers (MRs), which connect it to the global Internet. Nodes behind the MR(s) (MNNs) are both fixed (LFNs) and mobile (VMNs or LMNs). In most cases, the internal structure of the mobile network will be relatively stable (no dynamic change of the topology), but this is not always true. Cases of mobile networks include, for instance: o Networks attached to people (Personal Area Networks or PANs): a cell phone with one cellular interface and one Bluetooth interface together with a Bluetooth-enabled PDA constitute a very simple instance of a mobile network. The cell phone is the mobile router while the PDA is used for web browsing or runs a personal web server. Ernst Informational [Page 2] RFC 4886 NEMO Goals July 2007 o Networks of sensors and computers deployed in vehicles: vehicles are increasingly equipped with a number of processing units for safety and ease of driving reasons, as advocated by ITS (Intelligent Transportation Systems) applications ([4]). o Access networks deployed in public transportation (buses, trains, taxis, aircrafts): they provide Internet access to IP devices carried by passengers (laptop, camera, mobile phone); host mobility within network mobility or PANs; network mobility within network mobility, i.e., nested mobility (see [1] for the definition of nested mobility). o Ad-hoc networks connected to the Internet via an MR: for instance, students in a train who need to both set up an ad-hoc network among themselves and get Internet connectivity through the MRShow full document text