PIM Proxy in EVPN Networks
draft-skr-bess-evpn-pim-proxy-00

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Last updated 2017-07-03
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BESS Workgroup                                           J. Rabadan, Ed.
Internet Draft                                               J. Kotalwar
Intended status: Standards Track                            S. Sathappan
                                                                   Nokia
                                                                Z. Zhang
                                                                 Juniper
                                                              A. Sajassi
                                                                   Cisco

Expires: January 4, 2018                                    July 3, 2017

                       PIM Proxy in EVPN Networks
                    draft-skr-bess-evpn-pim-proxy-00

Abstract

   Ethernet Virtual Private Networks [RFC7432] are becoming prevalent in
   Data Centers, Data Center Interconnect (DCI) and Service Provider VPN
   applications. One of the goals that EVPN pursues is the reduction of
   flooding and the efficiency of CE-based control plane procedures in
   Broadcast Domains. Examples of this are [EVPN-PROXY-ARP-ND] for
   improving the efficiency of CE's ARP/ND protocols, and [EVPN-IGMP-
   MLD-PROXY] for IGMP/MLD protocols. This document complements the
   latter, describing the procedures required to minimize the flooding
   of PIM messages in EVPN Broadcast Domains, and optimize the IP
   Multicast delivery between PIM routers. 

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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Kotalwar,Sathappan,Rabadan et al.Expires January 4, 2018        [Page 1]
Internet-Draft               EVPN PIM Proxy                 July 3, 2017

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on January 4, 2018.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2. PIM Proxy Operation in EVPN Broadcast Domains . . . . . . . . .  4
     2.1. Multicast Router Discovery Procedures in EVPN . . . . . . .  5
       2.1.1. Discovering PIM Routers . . . . . . . . . . . . . . . .  5
       2.1.2. Discovering IGMP Queriers . . . . . . . . . . . . . . .  7
     2.2. PIM Join/Prune Proxy Procedures . . . . . . . . . . . . . .  7
     2.3. PIM Assert Optimization . . . . . . . . . . . . . . . . . . 10
       2.3.1 Assert Optimization Procedures in Downstream PEs . . . . 11
       2.3.2 Assert Optimization Procedures in Upstream PEs . . . . . 12
     2.4. EVPN Multi-Homing and State Synchronization . . . . . . . . 12
     2.5. PIM Bootstrap and RP Discovery  . . . . . . . . . . . . . . 13
     2.6. PIM-DM (Dense Mode) Proxy Procedures  . . . . . . . . . . . 13
   3. Interaction with IGMP-snooping and Sources  . . . . . . . . . . 13
   4. BGP Information Model . . . . . . . . . . . . . . . . . . . . . 14
     4.1 Multicast Router Discovery (MRD) Route . . . . . . . . . . . 15
     4.2 Selective Multicast Ethernet Tag Route for PIM Proxy . . . . 16
     4.3 PIM RPT-Prune Route  . . . . . . . . . . . . . . . . . . . . 18
     4.4 IGMP/PIM Join Synch Route for PIM Proxy  . . . . . . . . . . 19
     4.5 IGMP/PIM RPT-Prune Synch Route for PIM Proxy . . . . . . . . 20
   5. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . 21
   6. Conventions used in this document . . . . . . . . . . . . . . . 21
   7. Security Considerations . . . . . . . . . . . . . . . . . . . . 21
   8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 21
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