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Multicast Source Redundancy in EVPN Networks

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Expired & archived
Authors Jorge Rabadan , Jayant Kotalwar , Senthil Sathappan , Eric C. Rosen , Zhaohui (Jeffrey) Zhang , Wen Lin
Last updated 2019-04-25 (Latest revision 2018-10-22)
Replaced by draft-ietf-bess-evpn-redundant-mcast-source
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


EVPN supports intra and inter-subnet IP multicast forwarding. However, EVPN (or conventional IP multicast techniques for that matter) do not have a solution for the case where a given multicast group carries more than one flow (i.e., more than one source), but where it is desired that each receiver gets only one of the several flows. Existing multicast techniques assume there are no redundant sources sending the same flows to the same IP multicast group, and, in case there were redundant sources, the receiver's application would deal with the received duplicated packets. This document extends the existing EVPN specifications and assumes that IP Multicast source redundancy may exist. It also assumes that, in case two or more sources send the same IP Multicast flows into the tenant domain, the EVPN PEs need to avoid that the receivers get packet duplication by following the described procedures.


Jorge Rabadan
Jayant Kotalwar
Senthil Sathappan
Eric C. Rosen
Zhaohui (Jeffrey) Zhang
Wen Lin

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)