Optimized Ingress Replication solution for EVPN
draft-ietf-bess-evpn-optimized-ir-02
BESS Workgroup J. Rabadan, Ed.
Internet Draft S. Sathappan
Intended status: Standards Track W. Henderickx
Nokia
R. Shekhar
N. Sheth A. Sajassi
W. Lin Cisco
M. Katiyar
Juniper A. Isaac
Juniper
M. Tufail
Citibank
Expires: February 17, 2018 August 16, 2017
Optimized Ingress Replication solution for EVPN
draft-ietf-bess-evpn-optimized-ir-02
Abstract
Network Virtualization Overlay (NVO) networks using EVPN as control
plane may use ingress replication (IR) or PIM-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
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Rabadan et al. Expires February 17, 2018 [Page 1]
Internet-Draft EVPN Optimized IR August 16, 2017
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Table of Contents
1. Problem Statement . . . . . . . . . . . . . . . . . . . . . . . 3
2. Solution requirements . . . . . . . . . . . . . . . . . . . . . 4
3. EVPN BGP Attributes for optimized-IR . . . . . . . . . . . . . 5
4. Non-selective Assisted-Replication (AR) Solution Description . 7
4.1. Non-selective AR-REPLICATOR procedures . . . . . . . . . . 8
4.2. Non-selective AR-LEAF procedures . . . . . . . . . . . . . 9
4.3. RNVE procedures . . . . . . . . . . . . . . . . . . . . . . 11
4.4. Forwarding behavior in non-selective AR EVIs . . . . . . . 11
4.4.1. Broadcast and Multicast forwarding behavior . . . . . . 11
4.4.1.1. Non-selective AR-REPLICATOR BM forwarding . . . . . 11
4.4.1.2. Non-selective AR-LEAF BM forwarding . . . . . . . . 12
4.4.1.3. RNVE BM forwarding . . . . . . . . . . . . . . . . 12
4.4.2. Unknown unicast forwarding behavior . . . . . . . . . . 13
4.4.2.1. Non-selective AR-REPLICATOR/LEAF Unknown unicast
forwarding . . . . . . . . . . . . . . . . . . . . 13
4.4.2.2. RNVE Unknown unicast forwarding . . . . . . . . . . 13
5. Selective Assisted-Replication (AR) Solution Description . . . 13
5.1. Selective AR-REPLICATOR procedures . . . . . . . . . . . . 14
5.2. Selective AR-LEAF procedures . . . . . . . . . . . . . . . 15
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