Multicast in L3VPNs Signaled by EVPN SAFI
draft-zzhang-bess-mcast-in-evpn-signaled-l3vpn-01
BESS Z. Zhang
Internet-Draft W. Lin
Intended status: Standards Track Juniper Networks
Expires: April 16, 2021 J. Rabadan
Nokia
October 13, 2020
Multicast in L3VPNs Signaled by EVPN SAFI
draft-zzhang-bess-mcast-in-evpn-signaled-l3vpn-01
Abstract
[ietf-bess-evpn-prefix-advertisement] specifies an EVPN SAFI Type-5
route that can be used to signal L3VPNs. This document specifies
procedures for multicast in such an L3VPN.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
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
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 16, 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
Zhang, et al. Expires April 16, 2021 [Page 1]
Internet-Draft mvpn-with-evpn-safi October 2020
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Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Optimized Inter-Subnet Multicast for EVPN . . . . . . . . 3
2.2. Using [RFC6514] Procedures . . . . . . . . . . . . . . . 4
2.3. Using [RFC6037] Procedures . . . . . . . . . . . . . . . 4
2.4. Adapted [RFC6514] Procedures . . . . . . . . . . . . . . 5
3. Specifications . . . . . . . . . . . . . . . . . . . . . . . 5
4. Security Considerations . . . . . . . . . . . . . . . . . . . 6
5. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1. Normative References . . . . . . . . . . . . . . . . . . 6
5.2. Informative References . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Terminology
It is expected that audience is familiar with EVPN and MVPN concepts
and terminologies. For convenience, the following terms are briefly
explained.
o PMSI: P-Multicast Service Interface - a conceptual interface for a
PE to send customer multicast traffic to all or some PEs in the
same VPN.
o I-PMSI: Inclusive PMSI - to all PEs in the same VPN.
o S-PMSI: Selective PMSI - to some of the PEs in the same VPN.
o Leaf A-D routes: For explicit leaf tracking purpose. Triggered by
S-PMSI A-D routes and targeted at triggering route's originator.
o IMET A-D route: Inclusive Multicast Ethernet Tag A-D route. The
EVPN equivalent of MVPN Intra-AS I-PMSI A-D route.
o SMET A-D route: Selective Multicast Ethernet Tag A-D route. The
EVPN equivalent of MVPN Leaf A-D route but unsolicited and
untargeted.
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2. Introduction
Traditionally, an L3VPN is signaled with BGP "MPLS-labeled VPN
address" SAFI and uses MPLS as provider tunnel as specified in
[RFC4364>]. Multicast support in such an L3VPN is specified in
[RFC6513] and [RFC6514].
[ietf-bess-evpn-prefix-advertisement] specifies another way of
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