Stitching LSP Association
draft-hu-pce-stitching-lsp-association-02

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PCE                                                           Quan Xiong
Internet-Draft                                               Greg Mirsky
Intended status: Standards Track                         ZTE Corporation
Expires: April 24, 2020                                       Fangwei Hu
                                                              Individual
                                                          Weiqiang Cheng
                                                            China Mobile
                                                        October 22, 2019

                       Stitching LSP Association
               draft-hu-pce-stitching-lsp-association-02

Abstract

   The Path Computation Element Communication Protocol (PCEP) provides
   mechanisms for Path Computation Elements (PCEs) to perform path
   computations in response to Path Computation Clients (PCCs) requests.
   [I-D.ietf-pce-association-group] proposed an association mechanism
   for a set of LSPs.

   This document defines the stitching LSP association type and
   stitching LSP association TLV for the inter-domain scenairo.

Status of This Memo

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   This Internet-Draft will expire on April 24, 2020.

Copyright Notice

   Copyright (c) 2019 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

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   3.  Stitching LSPs in SR-MPLS Inter-domain Scenario . . . . . . .   3
   4.  PCEP Extension for Stitching LSP  . . . . . . . . . . . . . .   3
     4.1.  I-flag in LSP Object  . . . . . . . . . . . . . . . . . .   3
     4.2.  Stitching LSP Association Type and Group  . . . . . . . .   4
     4.3.  Stitching LSP Association TLV . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  New LSP Flag Registry . . . . . . . . . . . . . . . . . .   5
     7.2.  Association Object Type . . . . . . . . . . . . . . . . .   6
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   [RFC5440] describes the Path Computation Element Protocol (PCEP)
   which is used between a Path Computation Element (PCE) and a Path
   Computation Client (PCC) (or other PCE) to enable computation of
   Multi-protocol Label Switching (MPLS) for Traffic Engineering Label
   Switched Path (TE LSP).  [I-D.ietf-pce-association-group] proposed an
   association mechanism to create a grouping of LSPs in the context of
   a PCE.

   [I-D.xiong-pce-stateful-pce-sr-inter-domain] introduces the procedure
   and the PCEP extension to form the inter-domain MPLS data entries and
   the multiple LSPs from multiple contiguous domains need to be
   stitched to an end-to-end LSP in SR inter-domain scenario.

   This document proposes a new association object type called
   "stitching Association LSP type" and TLV called "Stitching LSP
   Association TLV" to associate a grouping of LSPs from multiple
   domains for inter-domain scenario.

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