INTERNET-DRAFT Sami Boutros
Intended Status: Standard Track Ali Sajassi
Samer Salam
Cisco Systems
John Drake
Juniper Networks
Jeff Tantsura
Ericsson
Expires: August 28, 2013 February 24, 2013
VPWS support in E-VPN
draft-boutros-l2vpn-evpn-vpws-01.txt
Abstract
This document describes how E-VPN can be used to support virtual
private wire service (VPWS) in MPLS/IP networks. E-VPN enables the
following characteristics for VPWS: active/standby as well as
active/active multi-homing with flow-based load-balancing, eliminates
the need for single-segment and multi-segment PW signaling, and
provides fast protection using data-plane prefix independent
convergence upon node or link failure.
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Copyright and License Notice
Copyright (c) 2013 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
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Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . 3
2. BGP Extensions . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 E-VPN Comparison to PW Signaling . . . . . . . . . . . . . . . . 5
5 ESI Bandwidth Attribute . . . . . . . . . . . . . . . . . . . . 5
6 VPWS with multiple sites . . . . . . . . . . . . . . . . . . . . 6
7 Security Considerations . . . . . . . . . . . . . . . . . . . . 6
8 IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
9 References . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.1 Normative References . . . . . . . . . . . . . . . . . . . 6
9.2 Informative References . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 7
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1 Introduction
This document describes how E-VPN can be used to support virtual
private wire service (VPWS) in MPLS/IP networks. The use of E-VPN
mechanisms for VPWS applies the benefits of E-VPN to p2p services.
These benefits include active/standby AC redundancy as well as
active/active multi-homing with flow-based load-balancing.
Furthermore, the use of E-VPN for VPWS eliminates the need for
signaling single-segment and multi-segment PWs for p2p Ethernet
services.
[E-VPN] has the ability to forward customer traffic to/from a given
customer Attachment Circuit (AC), aka Ethernet Segment in E-VPN
terminology, without any MAC lookup. This capability is ideal in
providing p2p services (aka VPWS services). [MEF] defines EVPL
datatracker.ietf.org