SR Replication Policy for P2MP Service Delivery
draft-voyer-spring-sr-p2mp-policy-01

Document Type Active Internet-Draft (individual)
Last updated 2018-10-22
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                      D. Voyer, Ed.
Internet-Draft                                                 C. Hassen
Intended status: Standards Track                               K. Gillis
Expires: April 25, 2019                                      Bell Canada
                                                             C. Filsfils
                                                               R. Parekh
                                                     Cisco Systems, Inc.
                                                              H. Bidgoli
                                                                   Nokia
                                                        October 22, 2018

            SR Replication Policy for P2MP Service Delivery
                  draft-voyer-spring-sr-p2mp-policy-01

Abstract

   This document describes the SR policy architecture for P2MP service
   delivery.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 25, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Voyer, Ed., et al.       Expires April 25, 2019                 [Page 1]
Internet-Draft         P2MP SR Replication Policy           October 2018

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  SR Replication Policy . . . . . . . . . . . . . . . . . . . .   3
   3.  Steering  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Spray P2MP segment  . . . . . . . . . . . . . . . . . . . . .   4
   5.  TreeSID P2MP segment  . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Using Controller to build a P2MP Segment  . . . . . . . .   4
       5.1.1.  SR Replication Policy Creation  . . . . . . . . . . .   5
       5.1.2.  TreeSID P2MP Segment Computation  . . . . . . . . . .   6
       5.1.3.  Instantiating TreeSID P2MP segment nodes  . . . . . .   7
       5.1.4.  Protection  . . . . . . . . . . . . . . . . . . . . .   7
   6.  Illustration  . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   8
   11. Normative References  . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   This document defines a variant of the SR Policy [I-D.  ietf-spring-
   segment-routing-policy] for constructing a P2MP segment to support
   Point-to-Multipoint service delivery.  We call it an SR Replication
   Policy.

   A Point-to-Multipoint (P2MP) segment connects a Root node to a set of
   Leaf nodes in a Segment Routing Domain.  We define two types of a
   P2MP segment: Spray and TreeSID.

   Spray P2MP segment enables a Root node to directly replicate a packet
   using a SR path to each Leaf node.

   For a TreeSID P2MP segment, a controller computes a tree from a Root
   node to a set of Leaf nodes via a set of Replication nodes.  A packet
   is replicated at the Root node and on Replication nodes towards each
   Leaf node.

Voyer, Ed., et al.       Expires April 25, 2019                 [Page 2]
Internet-Draft         P2MP SR Replication Policy           October 2018

2.  SR Replication Policy

   The SR Replication policy is a variant of an SR policy
Show full document text