PCEP extensions for p2mp sr policy
draft-hsd-pce-sr-p2mp-policy-00
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2019-07-08
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pce at IETF-105
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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.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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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.
Copyright Notice
Copyright (c) 2019 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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(http://trustee.ietf.org/license-info) in effect on the date of
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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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