Internet Engineering Task Force (IETF) R. Key, Ed.
Request for Comments: 7152 S. Delord
Category: Informational Telstra
ISSN: 2070-1721 F. Jounay
Orange CH
L. Huang
China Mobile
Z. Liu
China Telecom
M. Paul
Deutsche Telekom
March 2014
Requirements for Metro Ethernet Forum (MEF) Ethernet-Tree (E-Tree)
Support in Layer 2 Virtual Private Network (L2VPN)
Abstract
This document provides functional requirements for the support of
Metro Ethernet Forum (MEF) Ethernet Tree (E-Tree) in multipoint Layer
2 Virtual Private Network solutions (referred to as simply "L2VPN").
It is intended that potential solutions will use these requirements
as guidelines.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7152.
Key, et al. Informational [Page 1]RFC 7152 Requirement E-Tree in L2VPN March 2014Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
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Table of Contents
1. Introduction ....................................................3
1.1. Conventions Used in This Document ..........................3
2. IETF Multipoint Ethernet L2VPN Services .........................3
2.1. VPLS .......................................................3
2.2. Ethernet Virtual Private Network (E-VPN) ...................3
3. MEF Multipoint Ethernet Services ................................4
3.1. Similarities between E-LAN and E-Tree ......................4
3.2. Differences between E-LAN and E-Tree .......................4
3.3. E-Tree Use Cases ...........................................5
3.4. Generic E-Tree Service .....................................6
4. Problem Statement ...............................................6
4.1. Motivation .................................................6
4.2. Leaf-to-Leaf Communication Restriction .....................6
5. Requirements ....................................................7
5.1. Functional Requirements ....................................7
5.2. Applicability ..............................................8
5.3. Backward Compatibility .....................................8
5.4. External Network Network Interface (ENNI) ..................8
6. Security Considerations .........................................8
7. Contributors ....................................................8
8. Acknowledgements ................................................9
9. References ......................................................9
9.1. Normative References .......................................9
9.2. Informative References ....................................10
Appendix A. Frequently Asked Question .............................11
A.1. Are E-Tree Requirements Addressed in the Virtual
Private Multicast Service (VPMS) Requirements? ...............11
Key, et al. Informational [Page 2]
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