Registry and Extensions for P-Multicast Service Interface Tunnel Attribute Flags
draft-ietf-bess-pta-flags-02

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Document Type Active Internet-Draft (bess WG)
Last updated 2016-04-18 (latest revision 2016-02-02)
Replaces draft-rosen-bess-pta-flags
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Responsible AD Alvaro Retana
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BESS Working Group                                              E. Rosen
Internet-Draft                                    Juniper Networks, Inc.
Updates: 6514 (if approved)                                     T. Morin
Intended status: Standards Track                                  Orange
Expires: August 5, 2016                                 February 2, 2016

                      Registry and Extensions for
          P-Multicast Service Interface Tunnel Attribute Flags
                    draft-ietf-bess-pta-flags-02.txt

Abstract

   The BGP-based control procedures for Multicast Virtual Private
   Networks make use of a BGP attribute known as the "P-Multicast
   Service Interface (PMSI) Tunnel" attribute.  The attribute contains a
   one-octet "Flags" field.  The purpose of this document is to
   establish an IANA registry for the assignment of the bits in this
   field.  Since the Flags field contains only eight bits, this document
   also defines a new BGP Extended Community, "Additional PMSI Tunnel
   Attribute Flags", that can be used to carry additional flags for the
   PMSI Tunnel attribute.  This document updates RFC 6514.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on August 5, 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

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   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Extending the PMSI Tunnel Attribute Flags Field . . . . . . .   2
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   4.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  Normative References  . . . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   A BGP attribute known as the "P-Multicast Service Interface (PMSI)
   Tunnel" attribute is defined in [RFC6514].  This attribute contains a
   one-octet of "Flags" field.  Only one flag is defined in that RFC,
   but there is now a need to define additional flags.  However, that
   RFC did not create an IANA registry for the assignment of bits in the
   Flags field.  This document creates a registry for that purpose.  In
   addition, there may be a need to define more than eight flags.
   Therefore this document defines a new BGP Extended Community,
   "Additional PMSI Tunnel Attribute Flags", that can be used to carry
   additional flags for the PMSI Tunnel attribute.  A registry is also
   created for this Extended Community, allowing IANA to assign bits
   from the Extended Community's six-octet value field.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.  Extending the PMSI Tunnel Attribute Flags Field

   In [RFC6514], only a single octet in the PMSI Tunnel attribute is
   defined to carry bit flags.  This allows eight flags, which is
   unlikely to be sufficient for all future applications.

   This document defines a new Transitive Opaque Extended Community,
   "Additional PMSI Tunnel Attribute Flags".  It also defines a new bit
   flag in the PMSI Tunnel Attribute flags field, called the "Extension"
   flag.

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   The Additional PMSI Tunnel Attribute Flags Extended Community MUST
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