EVPN VPWS Flexible Cross-Connect Service
draft-ietf-bess-evpn-vpws-fxc-02
BESS Working Group A. Sajassi, Ed.
Internet-Draft P. Brissette
Intended status: Standards Track Cisco Systems
Expires: March 12, 2021 J. Uttaro
AT&T
J. Drake
Juniper Networks
S. Boutros
Ciena
J. Rabadan
Nokia
September 8, 2020
EVPN VPWS Flexible Cross-Connect Service
draft-ietf-bess-evpn-vpws-fxc-02
Abstract
This document describes a new EVPN VPWS service type specifically for
multiplexing multiple attachment circuits across different Ethernet
Segments and physical interfaces into a single EVPN VPWS service
tunnel and still providing Single-Active and All-Active multi-homing.
This new service is referred to as flexible cross-connect service.
After a description of the rationale for this new service type, the
solution to deliver such service is detailed.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 12, 2021.
Sajassi, et al. Expires March 12, 2021 [Page 1]
Internet-Draft EVPN VPWS Flexible Cross-Connect September 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Solution . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. VPWS Service Identifiers . . . . . . . . . . . . . . . . 7
3.2. Flexible Xconnect . . . . . . . . . . . . . . . . . . . . 7
3.2.1. Default mode FXC with Multi-homing . . . . . . . . . 8
3.3. VLAN-Signaled Flexible Xconnect . . . . . . . . . . . . . 8
3.3.1. Local Switching . . . . . . . . . . . . . . . . . . . 9
3.4. Service Instantiation . . . . . . . . . . . . . . . . . . 10
4. BGP Extensions . . . . . . . . . . . . . . . . . . . . . . . 10
5. Failure Scenarios . . . . . . . . . . . . . . . . . . . . . . 11
5.1. EVPN VPWS Service Failure . . . . . . . . . . . . . . . . 13
5.2. Attachment Circuit Failure . . . . . . . . . . . . . . . 13
5.3. PE Port Failure . . . . . . . . . . . . . . . . . . . . . 14
5.4. PE Node Failure . . . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1. Normative References . . . . . . . . . . . . . . . . . . 15
8.2. Informative References . . . . . . . . . . . . . . . . . 15
Appendix A. Contributors . . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction
[RFC8214] describes a solution to deliver P2P services using BGP
constructs defined in [RFC7432]. It delivers this P2P service
between a pair of Attachment Circuits (ACs), where an AC can
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