PCEP extensions for p2mp sr policy
draft-hsd-pce-sr-p2mp-policy-01

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Last updated 2019-11-04
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Network Working group                                    H. Bidgoli, Ed.
Internet Draft                                                     Nokia
Intended status: Standard Track                            D. Voyer, Ed.
                                                             Bell Canada
                                                         S. Rajarathinam
                                                             J. Kotalwar
                                                                   Nokia
                                                            S. Sivabalan
                                                      Cisco System, Inc.
                                                                 T. Saad
                                                                 Juniper

Expires: May 5, 2020                                    November 2, 2019

                   PCEP extensions for p2mp sr policy
                    draft-hsd-pce-sr-p2mp-policy-01

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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Bidgoli, et al.           Expires May 5, 2020                   [Page 1]
Internet-Draft      PCEP extensions for p2mp policy     November 2, 2019

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   This Internet-Draft will expire on October 8, 2017.

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Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. Conventions used in this document . . . . . . . . . . . . . . .  4
   3. Overview of PCEP Operation in SR P2MP Network . . . . . . . . .  4
     3.1. High level view of a P2MP Policy Objects  . . . . . . . . .  5
       3.1.1. shared tree vs non-shared tree  . . . . . . . . . . . .  6
       3.1.1. Existing drafts used in defining the P2MP Policy  . . .  6
       3.1.2. P2MP Policy Identification  . . . . . . . . . . . . . .  8
       3.1.3. Replication Segment Identification  . . . . . . . . . .  8
     3.2 High-Level Procedures for P2MP SR LSP Instantiation  . . . .  8
       3.2.1 MVPN procedures  . . . . . . . . . . . . . . . . . . . .  9
       3.2.2. Global Optimization for P2MP LSPs . . . . . . . . . . . 11
       3.2.3. Fast Reroute  . . . . . . . . . . . . . . . . . . . . . 11
       3.2.3. Connecting Replication Segment via Segment List . . . . 12
     3.3. SR P2MP Policy and Replication Segment TLVs and Objects . . 12
       3.3.1. SR P2MP Policy Objects  . . . . . . . . . . . . . . . . 13
       3.3.2. Replication Segment Objects . . . . . . . . . . . . . . 13
       3.3.3. P2MP Policy vs Replication Segment  . . . . . . . . . . 13
       3.3.4. P2MP Policy and Replication Segment general
              considerations  . . . . . . . . . . . . . . . . . . . . 13
   4. Object Format . . . . . . . . . . . . . . . . . . . . . . . . . 14
     4.1. Open Message and Capability Exchange  . . . . . . . . . . . 14
     4.2. Symbolic Name in PCInitiate message from PCC  . . . . . . . 15
     4.3. P2MP Policy Specific Objects and TLVs . . . . . . . . . . . 15
       4.3.1. P2MP Policy Association Group for P2MP Policy . . . . . 15
         4.3.1.2. P2MP SR Policy Association Group Policy
                  Identifiers TLV . . . . . . . . . . . . . . . . . . 15
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