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Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service (VPLS) (RFC7796) Disclosure Number: IPCOM000245564D
Original Publication Date: 2016-Mar-01
Included in the Prior Art Database: 2016-Mar-17
Document File: 52 page(s) / 53K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Jiang: AUTHOR [+3]


The Ethernet-Tree (E-Tree) service is defined in the Metro Ethernet Forum (MEF) Technical Specification MEF 6.2 [MEF6.2] as a Rooted- Multipoint Ethernet Virtual Connection (EVC) service. An MEF 6.2 E-Tree solution must meet the following design requirements: the Ethernet frames from a root may be received by any other root or leaf, and the frames from a leaf may be received by any root, but must not be received by a leaf. Further, an E-Tree service may include multiple roots and multiple leaves. Although Virtual Private Multicast Service (VPMS) [VPMS] and Point-to-Multipoint (P2MP) multicast are somewhat simplified versions of this service, in fact, they are both multicast services and are different from an E-Tree service that may include both unicast and multicast traffic.

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1;2c. Internet Engineering Task Force (IETF)                     Y. Jiang, Ed. Request for Comments: 7796                                       L. Yong Category: Standards Track                                         Huawei ISSN: 2070-1721                                                  M. Paul                                                         Deutsche Telekom                                                               March 2016

   Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)


   This document specifies a generic Virtual Private LAN Service (VPLS)    solution, which uses VLANs to indicate root or leaf traffic to    support Ethernet-Tree (E-Tree) services.  A VPLS Provider Edge (PE)    model is illustrated as an example for the solution.  In the    solution, E-Tree VPLS PEs are interconnected by Pseudowires (PWs),    which carry the VLAN indicating the E-Tree attribute.  The MAC    address-based Ethernet forwarding engine and the PW work in the same    way as specified in RFC 4762 and RFC 4448, respectively.  A signaling    mechanism is described to support E-Tree capability and VLAN mapping    negotiation.

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 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Jiang, et al.                Standards Track                    [Page 1]
 RFC 7796                 E-Tree Support in VPLS               March 2016

 Copyright Notice

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