Path Computation Element Protocol(PCEP) Extension for RSVP Color
draft-rajagopalan-pcep-rsvp-color-00

Document Type Active Internet-Draft (individual)
Authors Balaji Rajagopalan  , Vishnu Beeram  , Gyan Mishra 
Last updated 2021-01-15
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
PCE Working Group                                         B. Rajagopalan
Internet-Draft                                                 V. Beeram
Intended status: Standards Track                        Juniper Networks
Expires: July 19, 2021                                         G. Mishra
                                             Verizon Communications Inc.
                                                        January 15, 2021

    Path Computation Element Protocol(PCEP) Extension for RSVP Color
                  draft-rajagopalan-pcep-rsvp-color-00

Abstract

   This document specifies extensions to Path Computation Element
   Protocol (PCEP) to carry a newly defined attribute of RSVP LSP called
   'color' that can be used as a guiding criterion for selecting the LSP
   as a next hop for a service route.

Requirements Language

   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].

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 19, 2021.

Copyright Notice

   Copyright (c) 2021 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

Rajagopalan, et al.       Expires July 19, 2021                 [Page 1]
Internet-Draft               PCEP RSVP Color                January 2021

   (https://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.  Protocol Operation  . . . . . . . . . . . . . . . . . . . . .   3
   3.  TLV Format  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Usage with BGP-CT . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   5
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   This document defines a new RSVP LSP property, called "color", that
   can be exchanged over PCEP.  The 'color' field can be used as one of
   the guiding criteria in selecting the LSP as a next hop for service
   prefixes.

   While the specific details of how the service prefixes are associated
   with the appropriate RSVP LSP's are outside the scope of this
   specification, the envisioned high level usage of the 'color' field
   is as follows.

   The service prefixes are marked with some indication of the type of
   underlay they need.  The underlay LSP's carry corresponding markings,
   which we refer to as "color" in this specification, enabling an
   ingress node to associate the service prefixes with the appropriate
   underlay LSP's.

   As an example, for a BGP-based service, the originating PE could
   attach some community, e.g. the Extended Color Community [RFC5512]
   with the service route.  A receiving PE could use locally configured
   policies to associate service routes carrying Extended Color
   Community 'X' with underlay RSVP LSP's of color 'Y'.

   While the Extended Color Community provides a convenient method to
   perform the mapping, the policy on the ingress node is free to

Rajagopalan, et al.       Expires July 19, 2021                 [Page 2]
Internet-Draft               PCEP RSVP Color                January 2021

   classify on any property of the route to select underlay RSVP LSP's
   of a certain color.

2.  Protocol Operation

   The STATEFUL-PCE-CAPABILITY negotiation message is enhanced to carry
Show full document text