Applicability of EVPN to NVO3 Networks
draft-ietf-nvo3-evpn-applicability-03

Document Type Active Internet-Draft (nvo3 WG)
Authors Jorge Rabadan  , Matthew Bocci  , Sami Boutros  , Ali Sajassi 
Last updated 2021-03-08 (latest revision 2020-11-02)
Replaces draft-rabadan-nvo3-evpn-applicability
Stream Internet Engineering Task Force (IETF)
Intended RFC status Informational
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Stream WG state Submitted to IESG for Publication
Document shepherd Sam Aldrin
Shepherd write-up Show (last changed 2019-10-07)
IESG IESG state Publication Requested
Action Holders
Martin Vigoureux  for 37 days
Consensus Boilerplate Unknown
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Send notices to Sam Aldrin <aldrin.ietf@gmail.com>
NVO3 Workgroup                                           J. Rabadan, Ed.
Internet-Draft                                                  M. Bocci
Intended status: Informational                                     Nokia
Expires: May 6, 2021                                          S. Boutros
                                                                   Ciena
                                                              A. Sajassi
                                                                   Cisco
                                                        November 2, 2020

                 Applicability of EVPN to NVO3 Networks
                 draft-ietf-nvo3-evpn-applicability-03

Abstract

   In NVO3 networks, Network Virtualization Edge (NVE) devices sit at
   the edge of the underlay network and provide Layer-2 and Layer-3
   connectivity among Tenant Systems (TSes) of the same tenant.  The
   NVEs need to build and maintain mapping tables so that they can
   deliver encapsulated packets to their intended destination NVE(s).
   While there are different options to create and disseminate the
   mapping table entries, NVEs may exchange that information directly
   among themselves via a control-plane protocol, such as EVPN.  EVPN
   provides an efficient, flexible and unified control-plane option that
   can be used for Layer-2 and Layer-3 Virtual Network (VN) service
   connectivity.  This document describes the applicability of EVPN to
   NVO3 networks and how EVPN solves the challenges in those networks.

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 May 6, 2021.

Rabadan, et al.            Expires May 6, 2021                  [Page 1]
Internet-Draft         EVPN Applicability for NVO3         November 2020

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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  EVPN and NVO3 Terminology . . . . . . . . . . . . . . . . . .   3
   3.  Why Is EVPN Needed In NVO3 Networks?  . . . . . . . . . . . .   6
   4.  Applicability of EVPN to NVO3 Networks  . . . . . . . . . . .   8
     4.1.  EVPN Route Types used in NVO3 Networks  . . . . . . . . .   8
     4.2.  EVPN Basic Applicability For Layer-2 Services . . . . . .   9
       4.2.1.  Auto-Discovery and Auto-Provisioning  . . . . . . . .  10
       4.2.2.  Remote NVE Auto-Discovery . . . . . . . . . . . . . .  12
       4.2.3.  Distribution Of Tenant MAC and IP Information . . . .  12
     4.3.  EVPN Basic Applicability for Layer-3 Services . . . . . .  13
     4.4.  EVPN as a Control Plane for NVO3 Encapsulations and
           GENEVE  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     4.5.  EVPN OAM and application to NVO3  . . . . . . . . . . . .  16
     4.6.  EVPN as the control plane for NVO3 security . . . . . . .  16
     4.7.  Advanced EVPN Features For NVO3 Networks  . . . . . . . .  16
       4.7.1.  Virtual Machine (VM) Mobility . . . . . . . . . . . .  16
       4.7.2.  MAC Protection, Duplication Detection and Loop
               Protection  . . . . . . . . . . . . . . . . . . . . .  17
       4.7.3.  Reduction/Optimization of BUM Traffic In Layer-2
               Services  . . . . . . . . . . . . . . . . . . . . . .  17
       4.7.4.  Ingress Replication (IR) Optimization For BUM Traffic  18
       4.7.5.  EVPN Multi-homing . . . . . . . . . . . . . . . . . .  19
       4.7.6.  EVPN Recursive Resolution for Inter-Subnet Unicast
               Forwarding  . . . . . . . . . . . . . . . . . . . . .  20
       4.7.7.  EVPN Optimized Inter-Subnet Multicast Forwarding  . .  21
       4.7.8.  Data Center Interconnect (DCI)  . . . . . . . . . . .  21
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .  22
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