PCEP extensions for p2mp sr policy
draft-hsd-pce-sr-p2mp-policy-00

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Last updated 2019-07-08
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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.

Expires: January 7, 2020                                    July 6, 2019

                   PCEP extensions for p2mp sr policy
                    draft-hsd-pce-sr-p2mp-policy-00

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 January 7, 2020                 [Page 1]
Internet-Draft      PCEP extensions for p2mp policy         July 6, 2019

   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. Existing drafts used in defining the P2MP Policy  . . .  6
       3.1.2. P2MP Identification . . . . . . . . . . . . . . . . . .  7
     3.2 High-Level Procedures for P2MP SR LSP Instantiation  . . . .  7
       3.2.1 MVPN procedures  . . . . . . . . . . . . . . . . . . . .  8
       3.2.2. Global Optimization for P2MP LSPs . . . . . . . . . . . 10
       3.2.3. Fast Reroute  . . . . . . . . . . . . . . . . . . . . . 10
       3.2.3. Connecting Replication Policy via Segment List  . . . . 11
     3.3. SR P2MP New TLVs and Objects  . . . . . . . . . . . . . . . 12
   4. Object Format . . . . . . . . . . . . . . . . . . . . . . . . . 12
     4.1. Open Message and Capability Exchange  . . . . . . . . . . . 12
     4.2. Symbolic Name in PCInitiate message from PCC  . . . . . . . 13
     4.3. Replication policy  . . . . . . . . . . . . . . . . . . . . 14
       4.3.1 P2MP Policy Association Group  . . . . . . . . . . . . . 14
         4.3.1.1 P2MP SR Policy Association Group Policy 
                 Identifiers TLV  . . . . . . . . . . . . . . . . . . 14
         4.3.1.2 P2MP SR Policy Association Group Candidate Path 
                 Identifiers TLV  . . . . . . . . . . . . . . . . . . 15
         4.3.1.3 P2MP SR Policy Association Group Candidate Path 
                 Attributes TLV . . . . . . . . . . . . . . . . . . . 16
     4.4. PCEP Message Exchanges  . . . . . . . . . . . . . . . . . . 17
       4.4.1 Extension of the LSP Object, SR-P2MP-LSPID-TLV . . . . . 17
     4.5. SR-P2MP-CCI Object  . . . . . . . . . . . . . . . . . . . . 18
       4.5.1 Optional IP-Address TLVs . . . . . . . . . . . . . . . . 19
     4.6. Root PCE Report message . . . . . . . . . . . . . . . . . . 21
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