Virtual Private Wire Service Support in Ethernet VPN
RFC 8214
Internet Engineering Task Force (IETF) S. Boutros
Request for Comments: 8214 VMware
Category: Standards Track A. Sajassi
ISSN: 2070-1721 S. Salam
Cisco
J. Drake
Juniper Networks
J. Rabadan
Nokia
August 2017
Virtual Private Wire Service Support in Ethernet VPN
Abstract
This document describes how Ethernet VPN (EVPN) can be used to
support the Virtual Private Wire Service (VPWS) in MPLS/IP networks.
EVPN accomplishes the following for VPWS: provides Single-Active as
well as All-Active multihoming with flow-based load-balancing,
eliminates the need for Pseudowire (PW) signaling, and provides fast
protection convergence upon node or link failure.
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/rfc8214.
Boutros, et al. Standards Track [Page 1]
RFC 8214 VPWS Support in EVPN August 2017
Copyright Notice
Copyright (c) 2017 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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
1.1. Terminology ................................................5
2. Service Interface ...............................................6
2.1. VLAN-Based Service Interface ...............................6
2.2. VLAN Bundle Service Interface ..............................7
2.2.1. Port-Based Service Interface ........................7
2.3. VLAN-Aware Bundle Service Interface ........................7
3. BGP Extensions ..................................................7
3.1. EVPN Layer 2 Attributes Extended Community .................8
4. Operation ......................................................10
5. EVPN Comparison to PW Signaling ................................11
6. Failure Scenarios ..............................................12
6.1. Single-Homed CEs ..........................................12
6.2. Multihomed CEs ............................................12
7. Security Considerations ........................................13
8. IANA Considerations ............................................13
9. References .....................................................13
9.1. Normative References ......................................13
9.2. Informative References ....................................14
Acknowledgements ..................................................16
Contributors ......................................................16
Authors' Addresses ................................................17
Boutros, et al. Standards Track [Page 2]
RFC 8214 VPWS Support in EVPN August 2017
1. Introduction
This document describes how EVPN can be used to support VPWS in
MPLS/IP networks. The use of EVPN mechanisms for VPWS (EVPN-VPWS)
brings the benefits of EVPN to Point-to-Point (P2P) services. These
benefits include Single-Active redundancy as well as All-Active
redundancy with flow-based load-balancing. Furthermore, the use of
EVPN for VPWS eliminates the need for the traditional way of PW
signaling for P2P Ethernet services, as described in Section 4.
[RFC7432] provides the ability to forward customer traffic to/from a
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