Optimized Ingress Replication solution for EVPN
draft-ietf-bess-evpn-optimized-ir-05

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BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                              S. Sathappan
Intended status: Standards Track                                   Nokia

                                                                  W. Lin
                                                                 Juniper

                                                              M. Katiyar
                                                          Versa Networks

                                                              A. Sajassi
                                                                   Cisco

Expires: April 21, 2019                                 October 18, 2018

            Optimized Ingress Replication solution for EVPN
                  draft-ietf-bess-evpn-optimized-ir-05

Abstract

   Network Virtualization Overlay (NVO) networks using EVPN as control
   plane may use Ingress Replication (IR) or PIM (Protocol Independent
   Multicast) based trees to convey the overlay BUM traffic. PIM
   provides an efficient solution to avoid sending multiple copies of
   the same packet over the same physical link, however it may not
   always be deployed in the NVO core network. IR avoids the dependency
   on PIM in the NVO network core. While IR provides a simple multicast
   transport, some NVO networks with demanding multicast applications
   require a more efficient solution without PIM in the core. This
   document describes a solution to optimize the efficiency of IR in NVO
   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), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
 

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   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."

   The list of current Internet-Drafts can be accessed at
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   The list of Internet-Draft Shadow Directories can be accessed at
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   This Internet-Draft will expire on April 21, 2019.

Copyright Notice

   Copyright (c) 2018 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
   publication of this document. Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document. Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. Terminology and Conventions . . . . . . . . . . . . . . . . . .  4
   3. Solution requirements . . . . . . . . . . . . . . . . . . . . .  5
   4. EVPN BGP Attributes for optimized-IR  . . . . . . . . . . . . .  6
   5. Non-selective Assisted-Replication (AR) Solution Description  .  9
     5.1. Non-selective AR-REPLICATOR procedures  . . . . . . . . . . 10
     5.2. Non-selective AR-LEAF procedures  . . . . . . . . . . . . . 11
     5.3. RNVE procedures . . . . . . . . . . . . . . . . . . . . . . 12
     5.4. Forwarding behavior in non-selective AR EVIs  . . . . . . . 13
       5.4.1. Broadcast and Multicast forwarding behavior . . . . . . 13
         5.4.1.1. Non-selective AR-REPLICATOR BM forwarding . . . . . 13
         5.4.1.2. Non-selective AR-LEAF BM forwarding . . . . . . . . 14
         5.4.1.3. RNVE BM forwarding  . . . . . . . . . . . . . . . . 14
       5.4.2. Unknown unicast forwarding behavior . . . . . . . . . . 14
         5.4.2.1. Non-selective AR-REPLICATOR/LEAF Unknown unicast 
                  forwarding  . . . . . . . . . . . . . . . . . . . . 15
         5.4.2.2. RNVE Unknown unicast forwarding . . . . . . . . . . 15
 

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   6. Selective Assisted-Replication (AR) Solution Description  . . . 15
     6.1. Selective AR-REPLICATOR procedures  . . . . . . . . . . . . 15
     6.2. Selective AR-LEAF procedures  . . . . . . . . . . . . . . . 17