Stitching LSP Association
draft-hu-pce-stitching-lsp-association-00

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PCE workgroup                                                 Fangwei Hu
Internet-Draft                                                Quan Xiong
Intended status: Standards Track                             Greg Mirsky
Expires: June 13, 2019                                   ZTE Corporation
                                                          Weiqiang Cheng
                                                            China Mobile
                                                            Dec 10, 2018

                       Stitching LSP Association
             draft-hu-pce-stitching-lsp-association-00.txt

Abstract

   This document defines the stitching LSP association type and
   stitching LSP association TLV for the inter-domain Segment Routing
   MPLS-TP network.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on June 13, 2019.

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   Copyright (c) 2018 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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   2
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
     2.2.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   3.  Operation Overview  . . . . . . . . . . . . . . . . . . . . .   3
   4.  Stitching LSP Association Group . . . . . . . . . . . . . . .   3
     4.1.  Stitching LSP Association Object  . . . . . . . . . . . .   3
     4.2.  Stitching TLV format  . . . . . . . . . . . . . . . . . .   3
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
     7.1.  Association Types . . . . . . . . . . . . . . . . . . . .   4
     7.2.  Stitching Association TLV . . . . . . . . . . . . . . . .   4
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   [I-D.hu-mpls-sr-inter-domain-use-cases] provides stitching path label
   to indicate the the packet from the border nodes to forward to
   another AS domain.  The border nodes should install the following
   MPLS data entries:

     incomging label: Stiching Path Label
        outgoing label: the SID list of the next AS domain + next Stitching Path label

   [I-D.xiong-pce-stateful-pce-sr-inter-domain] introduces the procedure
   and the PCEP extension to form the inter-domain MPLS-TP MPLS data
   entries.  This document proposes the related LSP association group
   extension.

2.  Conventions used in this document

2.1.  Terminology

2.2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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3.  Operation Overview

   [I-D.ietf-pce-association-group] introduces a generic mechanism to
   create a grouping of LSPs.  This grouping can then be used to define
   associations between sets of LSPs or between a set of LSPs and a set
   of attributes.  This document proposes a new optional association
   object type called "stitching Association LSP type" and the related
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