Home Agent-Assisted Route Optimization between Mobile IPv4 Networks
RFC 6521
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Type |
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RFC - Experimental
(March 2012; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-makela-mip4-nemo-haaro
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IETF
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plain text
pdf
html
bibtex
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WG Document
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Document shepherd |
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No shepherd assigned
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| IESG |
IESG state |
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RFC 6521 (Experimental)
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Consensus Boilerplate |
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Unknown
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Responsible AD |
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Jari Arkko
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IESG note |
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Pete McCann (mccap@petoni.org) is the document shepherd.
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Send notices to |
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(None)
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Internet Engineering Task Force (IETF) A. Makela
Request for Comments: 6521 Aalto University/Comnet
Category: Experimental J. Korhonen
ISSN: 2070-1721 Nokia Siemens Networks
February 2012
Home Agent-Assisted Route Optimization between Mobile IPv4 Networks
Abstract
This document describes a home agent-assisted route optimization
functionality for the IPv4 Network Mobility Protocol. The function
is designed to facilitate optimal routing in cases where all nodes
are connected to a single home agent; thus, the use case is route
optimization within a single organization or similar entity. The
functionality enables the discovery of eligible peer nodes (based on
information received from the home agent) and their network prefixes,
and the establishment of a direct tunnel between such nodes.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. This document is a product of the Internet Engineering
Task Force (IETF). It represents the consensus of the IETF
community. It has received public review and has been approved for
publication by the Internet Engineering Steering Group (IESG). Not
all documents approved by the IESG are a candidate for any level of
Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6521.
Makela & Korhonen Experimental [Page 1]
RFC 6521 HAaRO February 2012
Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction and Motivations ....................................3
2. Terms and Definitions ...........................................6
3. Mobile IPv4 Route Optimization between Mobile Networks ..........8
3.1. Maintaining Route Optimization Information .................9
3.1.1. Advertising Route-Optimizable Prefixes ..............9
3.1.2. Route Optimization Cache ...........................11
3.2. Return Routability Procedure ..............................13
3.2.1. Router Keys ........................................15
3.2.2. Nonces .............................................15
3.2.3. Updating Router Keys and Nonces ....................16
3.3. Mobile-Correspondent Router Operations ....................16
3.3.1. Triggering Route Optimization ......................17
3.3.2. Mobile Router Routing Tables .......................17
3.3.3. Inter-Mobile Router Registration ...................18
3.3.4. Inter-Mobile Router Tunnels ........................20
3.3.5. Constructing Route-Optimized Packets ...............21
3.3.6. Handovers and Mobile Routers Leaving Network .......21
3.4. Convergence and Synchronization Issues ....................22
4. Data Compression Schemes .......................................23
4.1. Prefix Compression ........................................23
4.2. Realm Compression .........................................25
4.2.1. Encoding of Compressed Realms ......................25
4.2.2. Searching Algorithm ................................27
4.2.3. Encoding Example ...................................27
Makela & Korhonen Experimental [Page 2]
RFC 6521 HAaRO February 2012
5. New Mobile IPv4 Messages and Extensions ........................30
5.1. Mobile Router Route Optimization Capability Extension .....30
5.2. Route Optimization Reply ..................................31
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