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 (matthew.bocci@nokia.com).
The responsible Area Director is Martin Vigoureux (martin.vigoureux@nokia.com).