PCEP extensions for p2mp sr policy
draft-dhs-spring-pce-sr-p2mp-policy-00

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Last updated 2019-03-11
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Network Working group                                    H. Bidgoli, Ed.
Internet Draft                                                     Nokia
Intended status: Standard Track                            D. Yoyer, Ed.
                                                             Bell Canada
                                                         S. Rajarathinam
                                                             J. Kotalwar
                                                                   Nokia
                                                            S. Sivabalan
                                                      Cisco System, Inc.

Expires: September 12, 2019                               March 11, 2019

                   PCEP extensions for p2mp sr policy
                 draft-dhs-spring-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 September 12, 2019               [Page 1]
Internet-Draft      MLDP Stitching Through BIER Core      March 11, 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 . . . . . . . . . . . . . . .  3
   3. Overview of PCEP Operation in SR P2MP Network . . . . . . . . .  3
     3.1. P2MP Identification . . . . . . . . . . . . . . . . . . . .  4
     3.2 High-Level Procedures for P2MP SR LSP Instantiation  . . . .  4
       3.2.1. New Objects for SR P2MP LSP instantiation . . . . . . .  5
     3.3. High-Level Procedures for P2MP Global Optimization  . . . .  5
     3.4. High-Level Procedures for Fast Reroute  . . . . . . . . . .  6
   4. Object Format . . . . . . . . . . . . . . . . . . . . . . . . .  7
     4.1. Open Message and Capability Exchange  . . . . . . . . . . .  7
     4.2. Symbolic Name in PCInitiate message from PCC  . . . . . . .  7
     4.3. PCE Update, Root Report message . . . . . . . . . . . . . .  8
       4.3.1 Extension of the LSP Object, SR-P2MP-LSPID-TLV . . . . .  8
       4.3.2 END-POINTS Objects . . . . . . . . . . . . . . . . . . .  9
     4.4. PCInitiate Message and P2MP Tree Instantiation  . . . . . . 12
       4.4.1. New SR-P2MP-CCI Object  . . . . . . . . . . . . . . . . 13
       4.4.2. New Optional IPv4-ADDRESS TLV . . . . . . . . . . . . . 13
       4.4.3. UNNUMBERED IPV4-ID-ADDRESS TLV: . . . . . . . . . . . . 15
       4.4.4. New Optional IPv6-ADDRESS TLV . . . . . . . . . . . . . 15
     4.5. Global Optimization and Make Before Break . . . . . . . . . 15
     4.7. Fragmentation . . . . . . . . . . . . . . . . . . . . . . . 16
   5. Example workflow  . . . . . . . . . . . . . . . . . . . . . . . 16
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 18
   7. Security Considerations . . . . . . . . . . . . . . . . . . . . 18
   8. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 19
     8.1. Normative References  . . . . . . . . . . . . . . . . . . . 19
     8.2. Informative References  . . . . . . . . . . . . . . . . . . 19
   7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 19
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