SR Replication Segment for Multi-point Service Delivery
draft-voyer-spring-sr-replication-segment-01
Network Working Group D. Voyer, Ed.
Internet-Draft Bell Canada
Intended status: Standards Track C. Filsfils
Expires: May 22, 2020 R. Parekh
Cisco Systems, Inc.
H. Bidgoli
Nokia
Z. Zhang
Juniper Networks
November 19, 2019
SR Replication Segment for Multi-point Service Delivery
draft-voyer-spring-sr-replication-segment-01
Abstract
This document describes the SR Replication segment for Multi-point
service delivery. A SR Replication segment allows a packet to be
replicated from a Replication node to downstream nodes.
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 May 22, 2020.
Voyer, Ed., et al. Expires May 22, 2020 [Page 1]
Internet-Draft SR Replication Segment November 2019
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
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. Replication segment . . . . . . . . . . . . . . . . . . . . . 2
3. Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
5. Security Considerations . . . . . . . . . . . . . . . . . . . 4
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 5
7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 5
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1. Normative References . . . . . . . . . . . . . . . . . . 6
8.2. Informative References . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
We define a new type of segment for Segment Routing [RFC8402], called
Replication segment, which allows a node (henceforth called as
Replication node) to replicate packets to a set of other nodes
(called Downstream nodes) in a Segment Routing Domain. Replication
segments provide building blocks for Point-to-Multi-point Service
delivery. A Replication segment at ingress node of Multi-point
service could replicates packets directly to each egress node of the
service (without need for any state on the internal routers), or it
could be stitched to other Replication segments to build a tree in SR
domain for Multi-point service. The latter is outside the scope of
this document but specified in [I-D.voyer-pim-sr-p2mp-policy].
2. Replication segment
In a Segment Routing Domain, a Replication segment is a logical
segment which connects a Replication node to a set of Downstream
nodes. A Replication segment can be either provisioned locally on a
Voyer, Ed., et al. Expires May 22, 2020 [Page 2]
Internet-Draft SR Replication Segment November 2019
node or programmed by a PCE. Replication segments apply equally to
Show full document text