Subject: [bess] Protocol Action: 'Optimized Ingress Replication Solution for Ethernet VPN (EVPN)' to Proposed Standard (draft-ietf-bess-evpn-optimized-ir-12.txt)

From: The IESG <[email-masked]>
Date: Tue, 25 Jan 2022 13:37:32 -0800

The IESG has approved the following document:
- 'Optimized Ingress Replication Solution for Ethernet VPN (EVPN)'
  (draft-ietf-bess-evpn-optimized-ir-12.txt) as Proposed Standard

This document is the product of the BGP Enabled ServiceS Working Group.

The IESG contact persons are Alvaro Retana, John Scudder and Martin Vigoureux.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-bess-evpn-optimized-ir/

Technical Summary

   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.

Working Group Summary

   The document was developed to address the desire to provide efficient replication.
   It is important because it avoids the need to deploy PIM in the core of the network 
   only for this application, which is particularly a consideration where EVPN is deployed 
   to implement Network Virtualization Overlays in data centers. It makes use of 
   a new BGP PMSI Tunnel Type to do this.

Document Quality

   The document has been widely reviewed and discussed on the list over a 
   number of years. 
   There are known implementations.

Personnel

   The document shepherd is Matthew Bocci ([email-masked]).
   The responsible Area Director is Martin Vigoureux ([email-masked]).