Ethernet-Tree (E-Tree) Support in Ethernet VPN (EVPN) and Provider Backbone Bridging EVPN (PBB-EVPN)
RFC 8317
| Document | Type |
RFC - Proposed Standard
(January 2018; No errata)
Updates RFC 7385
|
|
|---|---|---|---|
| Last updated | 2018-01-31 | ||
| Replaces | draft-sajassi-bess-evpn-etree | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Thomas Morin | ||
| Shepherd write-up | Show (last changed 2017-01-17) | ||
| IESG | IESG state | RFC 8317 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alvaro Retana | ||
| Send notices to | "Thomas Morin" <thomas.morin@orange.com>, aretana.ietf@gmail.com | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) A. Sajassi, Ed.
Request for Comments: 8317 S. Salam
Updates: 7385 Cisco
Category: Standards Track J. Drake
ISSN: 2070-1721 Juniper
J. Uttaro
ATT
S. Boutros
VMware
J. Rabadan
Nokia
January 2018
Ethernet-Tree (E-Tree) Support in Ethernet VPN (EVPN) and
Provider Backbone Bridging EVPN (PBB-EVPN)
Abstract
The MEF Forum (MEF) has defined a rooted-multipoint Ethernet service
known as Ethernet-Tree (E-Tree). A solution framework for supporting
this service in MPLS networks is described in RFC 7387, "A Framework
for Ethernet-Tree (E-Tree) Service over a Multiprotocol Label
Switching (MPLS) Network". This document discusses how those
functional requirements can be met with a solution based on RFC 7432,
"BGP MPLS Based Ethernet VPN (EVPN)", with some extensions and a
description of how such a solution can offer a more efficient
implementation of these functions than that of RFC 7796,
"Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service
(VPLS)". This document makes use of the most significant bit of the
Tunnel Type field (in the P-Multicast Service Interface (PMSI) Tunnel
attribute) governed by the IANA registry created by RFC 7385; hence,
it updates RFC 7385 accordingly.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8317.
Sajassi, et al. Standards Track [Page 1]
RFC 8317 E-Tree Support in EVPN and PBB-EVPN January 2018
Copyright Notice
Copyright (c) 2018 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.
Sajassi, et al. Standards Track [Page 2]
RFC 8317 E-Tree Support in EVPN and PBB-EVPN January 2018
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Specification of Requirements . . . . . . . . . . . . . . 5
2.2. Terms and Abbreviations . . . . . . . . . . . . . . . . . 5
3. E-Tree Scenarios . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Scenario 1: Leaf or Root Site(s) per PE . . . . . . . . . 6
3.2. Scenario 2: Leaf or Root Site(s) per AC . . . . . . . . . 7
3.3. Scenario 3: Leaf or Root Site(s) per MAC Address . . . . 8
4. Operation for EVPN . . . . . . . . . . . . . . . . . . . . . 9
4.1. Known Unicast Traffic . . . . . . . . . . . . . . . . . . 9
4.2. BUM Traffic . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1. BUM Traffic Originated from a Single-Homed Site on a
Leaf AC . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.2. BUM Traffic Originated from a Single-Homed Site on a
Root AC . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.3. BUM Traffic Originated from a Multihomed Site on a
Leaf AC . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.4. BUM Traffic Originated from a Multihomed Site on a
Root AC . . . . . . . . . . . . . . . . . . . . . . . 12
4.3. E-Tree Traffic Flows for EVPN . . . . . . . . . . . . . . 12
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