Loop Protection in EVPN networks
draft-snr-bess-evpn-loop-protect-00

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Last updated 2017-07-03
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BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                              S. Sathappan
Intended status: Informational                                K. Nagaraj
                                                                   Nokia

                                                                J. Bueno
                                                               J. Crespo
                                                              Telefonica

Expires: January 4, 2018                                    July 3, 2017

                    Loop Protection in EVPN networks
                  draft-snr-bess-evpn-loop-protect-00

Abstract

   Ethernet Virtual Private Networks (EVPN) is becoming the de-facto
   standard-based control plane solution for Data Center and layer-2
   Service Provider applications. The risk of loops caused by backdoor
   paths accidentally created within the same broadcast domain, is a
   general common concern, especially among Service Providers in large
   Layer-2 networks. While other layer-2 Ethernet technologies use
   Spanning Tree based Protocols (xSTP) to provide a network-wide loop
   protection, EVPN has the right tools to detect and protect the
   network against loops in an efficient and effective way. This
   document describes a mechanism to provide global loop protection in
   EVPN networks.    

Status of this Memo

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Internet-Draft            EVPN Loop Protection              July 3, 2017

   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
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   This Internet-Draft will expire on January 4, 2018.

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
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. Loop Protection Requirements in EVPN networks . . . . . . . . .  5
   3. Loop Protection Solution for EVPN networks  . . . . . . . . . .  6
     3.1 The RFC7432 EVPN MAC Duplication Mechanism and Loop 
         Protection . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.2 Loop Protection Solution . . . . . . . . . . . . . . . . . .  7
     3.3 The Black-Hole MAC concept for Loop Protection . . . . . . . 10
   4. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . 11
   6. Conventions used in this document . . . . . . . . . . . . . . . 11
   7. Security Considerations . . . . . . . . . . . . . . . . . . . . 11
   8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 12
   9. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 12
   9. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     9.1 Normative References . . . . . . . . . . . . . . . . . . . . 12
     9.2 Informative References . . . . . . . . . . . . . . . . . . . 12
   10. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 12
   11. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 12
   17. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 12

 

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1. Introduction

   Ethernet Virtual Private Networks (EVPN) is becoming the de-facto
   standard-based control plane solution for Data Center and layer-2
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