VPWS support in EVPN
draft-ietf-bess-evpn-vpws-03
INTERNET-DRAFT Sami Boutros
Intended Status: Standard Track VMware
Ali Sajassi
Samer Salam
Cisco Systems
John Drake
Juniper Networks
Jeff Tantsura
Ericsson
Dirk Steinberg
Steinberg Consulting
Thomas Beckhaus
Deutsche Telecom
J. Rabadan
Alcatel-Lucent
Expires: September 17, 2016 March 16, 2016
VPWS support in EVPN
draft-ietf-bess-evpn-vpws-03.txt
Abstract
This document describes how EVPN can be used to support virtual
private wire service (VPWS) in MPLS/IP networks. EVPN enables the
following characteristics for VPWS: single-active as well as all-
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.
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as
Boutros Expires September 17, 2016 [Page 1]
INTERNET DRAFT VPWS support in EVPN March 16, 2016
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Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . 6
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
2.4 Flexible CrossConnect Service . . . . . . . . . . . . . . . 7
3. BGP Extensions . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 EVPN Layer 2 attributes extended community . . . . . . . . . 9
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 EVPN Comparison to PW Signaling . . . . . . . . . . . . . . . . 12
6 ESI Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Failure Scenarios . . . . . . . . . . . . . . . . . . . . . . . 12
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7.1 Single-Homed CEs . . . . . . . . . . . . . . . . . . . . . . 13
7.2 Multi-Homed CEs . . . . . . . . . . . . . . . . . . . . . . 13
8 VPWS with multiple sites . . . . . . . . . . . . . . . . . . . . 13
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