Multicast Control Extensions for the Access Node Control Protocol (ANCP)
RFC 7256

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Internet Engineering Task Force (IETF)                    F. Le Faucheur
Request for Comments: 7256                                   R. Maglione
Updates: 6320                                                      Cisco
Category: Standards Track                                      T. Taylor
ISSN: 2070-1721                                                   Huawei
                                                               July 2014

Multicast Control Extensions for the Access Node Control Protocol (ANCP)

Abstract

   This document specifies the extensions to the Access Node Control
   Protocol (ANCP) (RFC 6320) required for support of the multicast use
   cases defined in the Access Node Control Protocol framework document
   (RFC 5851) and one additional use case described in this document.
   These use cases are organized into the following ANCP capabilities:

   o  multicast replication initiated by the Network Access Server
      (NAS);

   o  conditional access and admission control with white and black
      lists;

   o  conditional access and admission control with grey lists;

   o  bandwidth delegation; and

   o  committed bandwidth reporting.

   These capabilities may be combined according to the rules given in
   this specification.

   This document updates RFC 6320 by assigning capability type 3 to a
   capability specified in this document and by changing the starting
   point for IANA allocation of result codes determined by IETF
   Consensus from 0x100 to 0x64.

Le Faucheur, et al.          Standards Track                    [Page 1]
RFC 7256                ANCP Multicast Extensions              July 2014

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/rfc7256.

Copyright Notice

   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
   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 ....................................................5
      1.1. A Note on Scope ............................................7
   2. Terminology .....................................................7
   3. Multicast Use Cases .............................................7
      3.1. NAS-Initiated Multicast Replication Control Use Case .......8
           3.1.1. Goals ...............................................8
           3.1.2. Message Flow ........................................9
      3.2. Conditional Access and Admission Control Use Case ..........9
           3.2.1. Goals ...............................................9
           3.2.2. Message Flow .......................................10
      3.3. Multicast Flow Reporting Use Case .........................11
           3.3.1. Goals ..............................................11
           3.3.2. Message Flow .......................................11
      3.4. Committed Bandwidth Reporting Use Case ....................11
           3.4.1. Goals ..............................................11
           3.4.2. Message Flow .......................................12
   4. ANCP Messages ..................................................13
      4.1. Provisioning Message ......................................13

Le Faucheur, et al.          Standards Track                    [Page 2]
RFC 7256                ANCP Multicast Extensions              July 2014

           4.1.1. Sender Behavior ....................................14
           4.1.2. Receiver Behavior ..................................14
      4.2. Port Management Message ...................................15
           4.2.1. Sender Behavior ....................................16
           4.2.2. Receiver Behavior ..................................16
      4.3. Multicast Replication Control Message .....................17
           4.3.1. Sender Behavior ....................................21
           4.3.2. Receiver Behavior ..................................21