Path Computation Element communication Protocol extension for signaling LSP diversity constraint
draft-litkowski-pce-association-diversity-01

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PCE Working Group                                           S. Litkowski
Internet-Draft                                                    Orange
Intended status: Standards Track                            S. Sivabalan
Expires: May 27, 2017                                Cisco Systems, Inc.
                                                                C. Barth
                                                        Juniper Networks
                                                       November 23, 2016

Path Computation Element communication Protocol extension for signaling
                        LSP diversity constraint
              draft-litkowski-pce-association-diversity-01

Abstract

   This document introduces a simple mechanism to signal path diversity
   for a group of Label Switched Paths (LSPs) via an extension to the
   Path Computation Element Communication Protocol (PCEP).

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Litkowski, et al.         Expires May 27, 2017                  [Page 1]
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Protocol extension  . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Association group . . . . . . . . . . . . . . . . . . . .   6
     4.2.  Optional TLVs . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  Association object Type Indicators  . . . . . . . . . . .   8
   7.  Manageability Considerations  . . . . . . . . . . . . . . . .   9
     7.1.  Control of Function and Policy  . . . . . . . . . . . . .   9
     7.2.  Information and Data Models . . . . . . . . . . . . . . .   9
     7.3.  Liveness Detection and Monitoring . . . . . . . . . . . .   9
     7.4.  Verify Correct Operations . . . . . . . . . . . . . . . .   9
     7.5.  Requirements On Other Protocols . . . . . . . . . . . . .   9
     7.6.  Impact On Network Operations  . . . . . . . . . . . . . .   9
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   [I-D.ietf-pce-association-group] introduces a generic mechanism to
   create a grouping of LSPs which can then be used to define
   associations between a set of LSPs and a set of attributes (such as
   configuration parameters or behaviours) and is equally applicable to
   the active and passive modes of a stateful PCE
   [I-D.ietf-pce-stateful-pce] or a stateless PCE [RFC5440].

   This document specifies a PCEP extension to signal that a particular
   group of LSPs should use diverse paths including the requested type
   of diversity.

1.1.  Requirements Language

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