PCE for BIER-TE Path
draft-chen-pce-bier-te-path-00

Document Type Active Internet-Draft (individual)
Authors Huaimo Chen  , Mike McBride  , Aijun Wang  , Gyan Mishra  , Yisong Liu  , Yanhe Fan  , Lei Liu  , Xufeng Liu 
Last updated 2021-02-21
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Network Working Group                                            H. Chen
Internet-Draft                                                M. McBride
Intended status: Standards Track                               Futurewei
Expires: August 25, 2021                                         A. Wang
                                                           China Telecom
                                                               G. Mishra
                                                            Verizon Inc.
                                                                  Y. Liu
                                                            China Mobile
                                                                  Y. Fan
                                                            Casa Systems
                                                                  L. Liu
                                                                 Fujitsu
                                                                  X. Liu
                                                          Volta Networks
                                                       February 21, 2021

                          PCE for BIER-TE Path
                     draft-chen-pce-bier-te-path-00

Abstract

   This document describes extensions to Path Computation Element (PCE)
   communication Protocol (PCEP) for supporting Bit Index Explicit
   Replication (BIER) Traffic Engineering (TE) paths.

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 RFC 2119 [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
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   material or to cite them other than as "work in progress."

Chen, et al.             Expires August 25, 2021                [Page 1]
Internet-Draft            PCE for BIER-TE Path             February 2021

   This Internet-Draft will expire on August 25, 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminologies . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Overview of PCE for BIER-TE . . . . . . . . . . . . . . . . .   5
     2.1.  Example BIER-TE Topology with PCE . . . . . . . . . . . .   5
     2.2.  A Brief Flow of PCEP Messages for a BIER-TE Path  . . . .   6
     2.3.  Procedures on Ingress . . . . . . . . . . . . . . . . . .   8
   3.  Extensions to PCEP  . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  BIER-TE Path Capability . . . . . . . . . . . . . . . . .   9
     3.2.  Extensions to SRP . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  SRP Object Flag Field . . . . . . . . . . . . . . . .  10
       3.2.2.  Multicast Traffic TLV . . . . . . . . . . . . . . . .  11
     3.3.  Ingress Node Object . . . . . . . . . . . . . . . . . . .  14
     3.4.  Objective Functions . . . . . . . . . . . . . . . . . . .  16
     3.5.  BIER-TE Path Subobject  . . . . . . . . . . . . . . . . .  17
     3.6.  BIER-TE Path Subobject in ERO . . . . . . . . . . . . . .  18
     3.7.  BIER-TE Path Subobject in RRO . . . . . . . . . . . . . .  18
   4.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     4.1.  BIER-TE Path Creation . . . . . . . . . . . . . . . . . .  19
     4.2.  BIER-TE Path Update . . . . . . . . . . . . . . . . . . .  20
     4.3.  BIER-TE Path Deletion . . . . . . . . . . . . . . . . . .  20
   5.  The PCEP Messages . . . . . . . . . . . . . . . . . . . . . .  20
     5.1.  The PCRpt Message . . . . . . . . . . . . . . . . . . . .  20
     5.2.  The PCUpd Message . . . . . . . . . . . . . . . . . . . .  21
     5.3.  The PCInitiate Message  . . . . . . . . . . . . . . . . .  21
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