PCEP extensions for p2mp sr policy
draft-hsd-pce-sr-p2mp-policy-02

Document Type Active Internet-Draft (individual)
Authors Hooman Bidgoli  , Daniel Voyer  , Saranya Rajarathinam  , Ehsan Hemmati  , Tarek Saad  , Siva Sivabalan 
Last updated 2020-10-30
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Network Working Group                                    H. Bidgoli, Ed.
Internet-Draft                                                     Nokia
Intended status: Standards Track                                V. Voyer
Expires: May 3, 2021                                         Bell Canada
                                                         S. Rajarathinam
                                                                   Nokia
                                                              E. Hemmati
                                                            Cisco System
                                                                 T. Saad
                                                        Juniper Networks
                                                            S. Sivabalan
                                                                   Ciena
                                                        October 30, 2020

                   PCEP extensions for p2mp sr policy
                    draft-hsd-pce-sr-p2mp-policy-02

Abstract

   SR P2MP policies are set of policies that enable architecture for
   P2MP service delivery.  This document specifies extensions to the
   Path Computation Element Communication Protocol (PCEP) that allow a
   stateful PCE to compute and initiate P2MP paths from a Root to a set
   of Leaves.

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   This Internet-Draft will expire on May 3, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bidgoli, et al.            Expires May 3, 2021                  [Page 1]
Internet-Draft             PCEP p2mp sr policy              October 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions used in this document . . . . . . . . . . . . . .   4
   3.  Overview of PCEP Opration in SR P2MP Network  . . . . . . . .   4
     3.1.  High level view of P2MP Policy Objects  . . . . . . . . .   5
       3.1.1.  Shared Tree vs Non-Shared Replication Segment . . . .   6
     3.2.  existing drafts used for defining a P2MP Policy . . . . .   7
       3.2.1.  Existing drafts/rfcs used by this draft . . . . . . .   7
       3.2.2.  P2MP Policy Identification  . . . . . . . . . . . . .   8
       3.2.3.  Replication Segment Identificaton . . . . . . . . . .   9
     3.3.  High Level Procedures for P2MP SR LSP Instantiation . . .   9
       3.3.1.  PCE-Init Procedure  . . . . . . . . . . . . . . . . .   9
       3.3.2.  PCC-Init Procedure  . . . . . . . . . . . . . . . . .  10
       3.3.3.  Comon Procedure . . . . . . . . . . . . . . . . . . .  10
       3.3.4.  Global Optimiation of the Candidate Path  . . . . . .  12
       3.3.5.  Fast Reroute  . . . . . . . . . . . . . . . . . . . .  12
       3.3.6.  Connecting Replication Segment via Segment List . . .  13
     3.4.  SR P2MP Policy and Replication Segment TLVs and Objects .  14
       3.4.1.  SR P2MP Policy Objects  . . . . . . . . . . . . . . .  14
       3.4.2.  Replication Segment Objects . . . . . . . . . . . . .  14
       3.4.3.  P2MP Policy vs Replication Segment  . . . . . . . . .  15
       3.4.4.  P2MP Policy and Replication Segment general
               considerations  . . . . . . . . . . . . . . . . . . .  15
   4.  Object Format . . . . . . . . . . . . . . . . . . . . . . . .  15
     4.1.  Open Message and Capablity Exchange . . . . . . . . . . .  16
     4.2.  Symbolic Name in PCInit Message from PCC  . . . . . . . .  17
     4.3.  P2MP Policy Specific Objects and TLVs . . . . . . . . . .  17
       4.3.1.  P2MP Policy Association Group for P2MP Policy . . . .  17
         4.3.1.1.  P2MP SR Policy Association Group Policy
                   Identifiers TLV . . . . . . . . . . . . . . . . .  17
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