Internet Engineering Task Force (IETF) LM. Contreras
Request for Comments: 7161 Telefonica I+D
Category: Experimental CJ. Bernardos
ISSN: 2070-1721 I. Soto
UC3M
March 2014
Proxy Mobile IPv6 (PMIPv6) Multicast Handover Optimization
by the Subscription Information Acquisition through the LMA (SIAL)
Abstract
This document specifies an experimental multicast handover
optimization mechanism for Proxy Mobile IPv6 (PMIPv6) to accelerate
the delivery of multicast traffic to mobile nodes after handovers.
The mechanism, called Subscription Information Acquisition through
the LMA (SIAL), is based on speeding up the acquisition of mobile
nodes' multicast context by the mobile access gateways. To do that,
extensions to the current PMIPv6 protocol are proposed. These
extensions are not only applicable to the base solution for multicast
support in Proxy Mobile IPv6, but they can also be applied to other
solutions developed to avoid the tunnel convergence problem.
Furthermore, these extensions are also independent of the role played
by the mobile access gateway within the multicast network (acting as
either multicast listener discovery proxy or multicast router).
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/rfc7161.
Contreras, et al. Experimental [Page 1]RFC 7161 PMIPv6 Multicast Handover Optimization March 2014Copyright Notice
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Handover Optimization
Requirements . . . . . . . . . . . . . . . . . . . . . . 5
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Proxy Mobile IPv6 Extensions . . . . . . . . . . . . . . . . 8
4.1. Active Multicast Subscription Mobility Option . . . . . . 8
4.1.1. Option Application Rules . . . . . . . . . . . . . . 8
4.1.2. Option Format . . . . . . . . . . . . . . . . . . . . 9
4.1.3. Backward Compatibility with MLDv1 . . . . . . . . . . 9
4.2. Multicast Signaling Flag on PBU/PBA Message Headers . . . 10
4.2.1. Flag Application Rules . . . . . . . . . . . . . . . 10
4.2.1.1. Registration Process . . . . . . . . . . . . . . 11
4.2.1.2. De-registration Process . . . . . . . . . . . . . 12
4.2.2. New Format of Conventional PBU/PBA Messages . . . . . 12
4.2.2.1. Proxy Binding Update Message . . . . . . . . . . 12
4.2.2.2. Proxy Binding Acknowledgement Message . . . . . . 13
4.3. Messages for Active Multicast Subscription Query . . . . 13
4.3.1. Subscription Query Message . . . . . . . . . . . . . 13
4.3.1.1. Message Application Rules . . . . . . . . . . . . 13
4.3.1.2. Message Format . . . . . . . . . . . . . . . . . 14
4.3.2. Subscription Response Message . . . . . . . . . . . . 15
4.3.2.1. Message Application Rules . . . . . . . . . . . . 15
4.3.2.2. Message Format . . . . . . . . . . . . . . . . . 15
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