Multicast Protocol for Low-Power and Lossy Networks (MPL) Parameter Configuration Option for DHCPv6
RFC 7774

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Internet Engineering Task Force (IETF)                            Y. Doi
Request for Comments: 7774                           Toshiba Corporation
Category: Standards Track                                    M. Gillmore
ISSN: 2070-1721                                              Itron, Inc.
                                                              March 2016

       Multicast Protocol for Low-Power and Lossy Networks (MPL)
               Parameter Configuration Option for DHCPv6

Abstract

   This document defines a way to configure a parameter set for MPL
   (Multicast Protocol for Low-Power and Lossy Networks) via a DHCPv6
   option.  MPL has a set of parameters to control its behavior, and the
   parameter set is often configured as a network-wide parameter because
   the parameter set should be identical for each MPL Forwarder in an
   MPL Domain.  Using the MPL Parameter Configuration Option defined in
   this document, a network can easily be configured with a single set
   of MPL parameters.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc7774.

Doi & Gillmore               Standards Track                    [Page 1]
RFC 7774              MPL Configuration for DHCPv6            March 2016

Copyright Notice

   Copyright (c) 2016 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 ....................................................2
   2. MPL Parameter Configuration Option ..............................3
      2.1. MPL Parameter Configuration Option Format ..................4
      2.2. DHCPv6 Client Behavior .....................................6
      2.3. MPL Forwarder Behavior .....................................6
      2.4. DHCPv6 Server Behavior .....................................7
      2.5. DHCPv6 Relay Behavior ......................................8
      2.6. Operational Considerations .................................8
   3. IANA Considerations .............................................8
   4. Security Considerations .........................................8
   5. References ......................................................9
      5.1. Normative References .......................................9
      5.2. Informative References ....................................10
   Authors' Addresses ................................................10

1.  Introduction

   The Multicast Protocol for Low-Power and Lossy Networks (MPL)
   [RFC7731] defines a protocol to make a multicast network among
   low-power and lossy networks, e.g., wireless mesh networks.  MPL has
   a set of parameters to control an MPL Domain.  The parameters control
   the trade-off between end-to-end delay and network utilization.  In
   most environments, the default parameters are acceptable.  However,
   in some environments, the parameter set must be configured carefully
   in order to meet the requirements of each environment.  According to
   Section 5.4 of [RFC7731], each parameter in the set should be the
   same for all nodes within an MPL Domain, but [RFC7731] does not
   define a method to configure the MPL parameter set.

Doi & Gillmore               Standards Track                    [Page 2]
RFC 7774              MPL Configuration for DHCPv6            March 2016

   Some managed wireless mesh networks may have a DHCP server to
   configure network parameters.  MPL parameter sets shall be considered
   as a part of network parameters (nodes in an MPL Domain should use an
   identical parameter set).  A parameter set is required to configure
   an MPL Domain.

   This document defines a way to distribute parameter sets for MPL
   Forwarders via a new DHCPv6 [RFC3315] option.  This document is
   intended to follow the guidelines provided in [RFC7227].

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",