Separation of Control and User Plane for Proxy Mobile IPv6
draft-ietf-netext-pmip-cp-up-separation-06

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Document Type Active Internet-Draft (netext WG)
Last updated 2014-08-12
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NETEXT WG                                                    R. Wakikawa
Internet-Draft                                           Softbank Mobile
Intended status: Standards Track                           R. Pazhyannur
Expires: February 13, 2015                                 S. Gundavelli
                                                                   Cisco
                                                              C. Perkins
                                                          Futurewei Inc.
                                                         August 12, 2014

       Separation of Control and User Plane for Proxy Mobile IPv6
             draft-ietf-netext-pmip-cp-up-separation-06.txt

Abstract

   This document specifies a method to split the Control Plane (CP) and
   User Plane (UP) for a Proxy Mobile IPv6 based network infrastructure.
   Existing specifications allow a mobile access gateway (MAG) to
   separate its control and user plane using the Alternate Care of
   address mobility option for IPv6, or Alternate IPv4 Care of Address
   option for IPv4.  However, the current specification does not provide
   any mechanism allowing the local mobility anchor (LMA) to perform an
   analogous functional split.  To remedy that shortcoming, this
   document specifies a mobility option enabling a LMA to provide an
   alternate LMA address to be used for the bi-directional user plane
   traffic between the MAG and LMA.  With this new option, a LMA will be
   able to use an IP address for its user plane which is different than
   the IP address used for the control plane.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on February 13, 2015.

Copyright Notice

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   Copyright (c) 2014 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
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   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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions and Terminology  . . . . . . . . . . . . . . . . .  5
     2.1.  Conventions  . . . . . . . . . . . . . . . . . . . . . . .  5
     2.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Additional Fields in Conceptual Data Structures  . . . . . . .  6
   4.  LMA User Plane Address Mobility Option . . . . . . . . . . . .  6
   5.  Protocol Configuration Variable  . . . . . . . . . . . . . . .  7
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  8
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  9
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     9.1.  Normative References . . . . . . . . . . . . . . . . . . .  9
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10

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1.  Introduction

   A PMIPv6 infrastructure comprises two primary entities: LMA (local
   mobility anchor) and MAG (mobile access gateway).  The interface
   between MAG and LMA consists of the control plane and user plane.
   The control plane is responsible for signaling messages between MAG
   and LMA such as the Proxy Binding Update (PBU) and Proxy Binding
   Acknowledgement (PBA) messages to establish a mobility binding.  In
   addition, the control plane components in the MAG and LMA are also
   responsible for setting up and tearing down a bi-directional tunnel
   between the MAG and LMA.  The user plane is used for carrying the
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