Ethernet-Tree (E-Tree) Support in Virtual Private LAN Service (VPLS)
RFC 7796
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RFC - Proposed Standard
(March 2016; No errata)
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Last updated |
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2016-03-16
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Replaces |
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draft-jiang-l2vpn-vpls-pe-etree
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Stream |
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Stewart Bryant
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Shepherd write-up |
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Show
(last changed 2015-11-13)
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| IESG |
IESG state |
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RFC 7796 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Deborah Brungard
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Send notices to |
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"Dr. Nabil N. Bitar" <nabil.n.bitar@verizon.com>, draft-ietf-l2vpn-vpls-pe-etree.all@ietf.org
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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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)
Abstract
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
http://www.rfc-editor.org/info/rfc7796.
Jiang, et al. Standards Track [Page 1]
RFC 7796 E-Tree Support in VPLS March 2016
Copyright Notice
Copyright (c) 2016 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
(http://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 . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 4
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. PE Model with E-Tree Support . . . . . . . . . . . . . . . . 5
4.1. Existing PE Models . . . . . . . . . . . . . . . . . . . 5
4.2. A New PE Model with E-Tree Support . . . . . . . . . . . 8
5. PW for E-Tree Support . . . . . . . . . . . . . . . . . . . . 9
5.1. PW Encapsulation . . . . . . . . . . . . . . . . . . . . 9
5.2. VLAN Mapping . . . . . . . . . . . . . . . . . . . . . . 10
5.3. PW Processing . . . . . . . . . . . . . . . . . . . . . . 11
5.3.1. PW Processing in the VLAN Mapping Mode . . . . . . . 11
5.3.2. PW Processing in the Compatible Mode . . . . . . . . 12
5.3.3. PW Processing in the Optimized Mode . . . . . . . . . 13
6. Signaling for E-Tree Support . . . . . . . . . . . . . . . . 14
6.1. LDP Extensions for E-Tree Support . . . . . . . . . . . . 14
6.2. BGP Extensions for E-Tree Support . . . . . . . . . . . . 17
7. OAM Considerations . . . . . . . . . . . . . . . . . . . . . 19
8. Applicability . . . . . . . . . . . . . . . . . . . . . . . . 19
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
10. Security Considerations . . . . . . . . . . . . . . . . . . . 20
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.1. Normative References . . . . . . . . . . . . . . . . . . 20
11.2. Informative References . . . . . . . . . . . . . . . . . 21
Appendix A. Other PE Models for E-Tree . . . . . . . . . . . . . 23
A.1. A PE Model with a VSI and No Bridge . . . . . . . . . . . 23
A.2. A PE Model with External E-Tree Interface . . . . . . . . 24
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 25
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 26
Jiang, et al. Standards Track [Page 2]
RFC 7796 E-Tree Support in VPLS March 2016
1. Introduction
The Ethernet-Tree (E-Tree) service is defined in the Metro Ethernet
Forum (MEF) Technical Specification MEF 6.2 [MEF6.2] as a Rooted-
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