Optimized Ingress Replication solution for EVPN
draft-ietf-bess-evpn-optimized-ir-05
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
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Rabadan et al. Expires April 21, 2019 [Page 1]
Internet-Draft EVPN Optimized IR October 18, 2018
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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
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