Registry and Extensions for P-Multicast Service Interface Tunnel Attribute Flags
draft-ietf-bess-pta-flags-01

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Document Type Active Internet-Draft (bess WG)
Last updated 2015-10-14 (latest revision 2015-08-06)
Replaces draft-rosen-bess-pta-flags
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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: February 7, 2016                                 August 6, 2015

                      Registry and Extensions for
          P-Multicast Service Interface Tunnel Attribute Flags
                    draft-ietf-bess-pta-flags-01.txt

Abstract

   RFC6514 defines the "P-Multicast Service Interface Tunnel (PMSI
   Tunnel) attribute".  This attribute contains an octet of "flags".
   Only one flag is defined in that RFC, but there is now a need to
   define additional flags.  Since the RFC did not create a registry for
   the assignment of flag bits, this document updates the RFC by
   creating a registry for that purpose.  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.

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 7, 2016.

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
   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.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  Normative References  . . . . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   [RFC6514] defines the "P-Multicast Service Interface Tunnel (PMSI
   Tunnel) attribute".  This attribute contains an octet of "flags".
   Only one flag is defined in that RFC, but there is now a need to
   define additional flags.  Since the RFC did not create a registry for
   the assignment of flag bits, 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
   allocate 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

   [RFC6514] defines only a single octet in the PMSI Tunnel attribute to
   use for 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.

   The "Additional PMSI Tunnel Attribute Flags" Extended Community MUST
   NOT be added to a BGP UPDATE message unless that message is also
   carrying a PMSI Tunnel attribute.  Further, when an "Additional PMSI

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   Tunnel Attribute Flags" Extended Community is added to a BGP UPDATE
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