Optimized Ingress Replication solution for EVPN
draft-ietf-bess-evpn-optimized-ir-07

Document Type Active Internet-Draft (bess WG)
Authors Jorge Rabadan  , Senthil Sathappan  , Wen Lin  , Mukul Katiyar  , Ali Sajassi 
Last updated 2020-07-13
Replaces draft-rabadan-bess-evpn-optimized-ir
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Matthew Bocci
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Send notices to Matthew Bocci <matthew.bocci@nokia.com>
BESS Workgroup                                           J. Rabadan, Ed.
Internet-Draft                                              S. Sathappan
Intended status: Standards Track                                   Nokia
Expires: January 14, 2021                                         W. Lin
                                                        Juniper Networks
                                                              M. Katiyar
                                                          Versa Networks
                                                              A. Sajassi
                                                           Cisco Systems
                                                           July 13, 2020

            Optimized Ingress Replication solution for EVPN
                  draft-ietf-bess-evpn-optimized-ir-07

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).  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 January 14, 2021.

Rabadan, et al.         Expires January 14, 2021                [Page 1]
Internet-Draft              EVPN Optimized IR                  July 2020

Copyright Notice

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   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Conventions . . . . . . . . . . . . . . . . .   4
   3.  Solution requirements . . . . . . . . . . . . . . . . . . . .   6
   4.  EVPN BGP Attributes for optimized-IR  . . . . . . . . . . . .   6
   5.  Non-selective Assisted-Replication (AR) Solution Description   10
     5.1.  Non-selective AR-REPLICATOR procedures  . . . . . . . . .  11
     5.2.  Non-selective AR-LEAF procedures  . . . . . . . . . . . .  12
     5.3.  RNVE procedures . . . . . . . . . . . . . . . . . . . . .  15
   6.  Selective Assisted-Replication (AR) Solution Description  . .  15
     6.1.  Selective AR-REPLICATOR procedures  . . . . . . . . . . .  15
     6.2.  Selective AR-LEAF procedures  . . . . . . . . . . . . . .  18
   7.  Pruned-Flood-Lists (PFL)  . . . . . . . . . . . . . . . . . .  19
     7.1.  A PFL example . . . . . . . . . . . . . . . . . . . . . .  20
   8.  AR Procedures for single-IP AR-REPLICATORS  . . . . . . . . .  21
   9.  AR Procedures and EVPN All-Active Multi-homing Split-Horizon   21
     9.1.  Ethernet Segments on AR-LEAF nodes  . . . . . . . . . . .  22
     9.2.  Ethernet Segments on AR-REPLICATOR nodes  . . . . . . . .  22
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  23
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  23
   12. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  24
   13. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  24
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  24
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  24
     14.2.  Informative References . . . . . . . . . . . . . . . . .  25
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  25

1.  Introduction
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