Static PCEP Link State
draft-chen-pce-pcc-ted-05

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PCE Working Group                                                H. Chen
Internet-Draft                                                 Futurewei
Intended status: Standards Track                                  M. Toy
Expires: January 8, 2020                                         Verizon
                                                                  X. Liu
                                                          Volta Networks
                                                                  L. Liu
                                                                 Fujitsu
                                                                   Z. Li
                                                            China Mobile
                                                            July 7, 2019

                         Static PCEP Link State
                       draft-chen-pce-pcc-ted-05

Abstract

   This document presents extensions to the Path Computation Element
   Communication Protocol (PCEP) for a PCC to advertise the information
   about the links without running IGP and for a PCE to build a TED
   based on the information received.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on January 8, 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
   (https://trustee.ietf.org/license-info) in effect on the date of

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   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Conventions Used in This Document . . . . . . . . . . . . . .   3
   4.  Link Information  . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Extensions to PCEP  . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Extension to Existing Message . . . . . . . . . . . . . .   4
       5.1.1.  TLVs  . . . . . . . . . . . . . . . . . . . . . . . .   4
       5.1.2.  Sub-TLVs  . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  Procedures  . . . . . . . . . . . . . . . . . . . . . . .   6
       5.2.1.  PCC Procedures  . . . . . . . . . . . . . . . . . . .   6
       5.2.2.  PCE Procedures  . . . . . . . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   8.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Appendix A.  New Message  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   A PCE architecture is described in RFC 4655, in which a Traffic
   Engineering Database (TED) for a PCE is constructed based on the link
   information from IGP (OSPF or IS-IS) running in the domain for which
   the PCE is responsible.

   For a domain without running IGP, the PCE responsible for the domain
   may obtain the link information from a PCC running on each node in
   the domain.

   This document presents extensions to the Path Computation Element
   Communication Protocol (PCEP) for a PCC to advertise the information
   about the links attached to the node running the PCC and for a PCE to
   build the TED based on the information received from the PCC.

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2.  Terminology