Distributed Mobility Anchoring
draft-chan-dmm-distributed-mobility-anchoring-01

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DMM                                                              H. Chan
Internet-Draft                                       Huawei Technologies
Intended status: Informational                                    J. Lee
Expires: September 24, 2015                         Sangmyung University
                                                                 S. Jeon
                                           Instituto de Telecomunicacoes
                                                          March 23, 2015

                     Distributed Mobility Anchoring
            draft-chan-dmm-distributed-mobility-anchoring-01

Abstract

   This document defines the mobility management protocol solutions in
   the context of a distributed mobility management deployment.  Such
   solutions consider the problem of assigning a mobility anchor and a
   gateway at the initiation of a session.  In addition, the mid-session
   switching of the mobility anchor in a distributed mobility management
   environment is considered.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on September 24, 2015.

Copyright Notice

   Copyright (c) 2015 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
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   (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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   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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions and Terminology  . . . . . . . . . . . . . . . . .  3
   3.  Anchor Initiation and Switching  . . . . . . . . . . . . . . .  5
     3.1.  IP anchoring in network of attachment  . . . . . . . . . .  5
     3.2.  IP anchoring not in network of attachment  . . . . . . . .  6
     3.3.  Keeping IP anchoring in mid-session  . . . . . . . . . . .  7
     3.4.  Changing IP anchoring (with IP address change) in
           mid-session  . . . . . . . . . . . . . . . . . . . . . . .  7
     3.5.  Moving IP anchoring (without IP address change in
           mid-session  . . . . . . . . . . . . . . . . . . . . . . .  8
     3.6.  Anchoring a session  . . . . . . . . . . . . . . . . . . .  9
     3.7.  Changing session anchoring in mid-session  . . . . . . . . 10
   4.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     6.1.  Normative References . . . . . . . . . . . . . . . . . . . 12
     6.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 13

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1.  Introduction

   A key requirement in distributed mobility management [RFC7333] is to
   enable traffic to avoid traversing single mobility anchor far from
   the optimal route.  Recent developments in research and
   standardization with respect to future deployment models call for far
   more flexibility in network function operation and management.  For
   example, the work on service function chaining at the IETF (SFC WG)
   has already identified a number of use cases for data centers.
   Although the work in SFC is not primarily concerned with mobile
   networks, the impact on IP-based mobile networks is not hard to see
   as by now most hosts connected to the Internet do so over a wireless
   medium.  For instance, as a result of a dynamic re-organization of
   service chain a non-optimal route between mobile nodes may arise if
   one relies solely on centralized mobility management.  This may also
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