BGP EVPN Flood Traffic Optimization

Document Type Expired Internet-Draft (individual)
Last updated 2018-09-06 (latest revision 2018-03-05)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In EVPN, the Broadcast, Unknown Unicast and Multicast (BUM) traffic is sent to all the routers participating in the EVPN instance. In a multi-homing scenario, when more than one PEs share the same Ethernet Segment, i.e. there are more than one PEs in a redundancy group, only the PE that is the Designated-Forwarder (DF) for the ES will forward that packet on the access interface whereas all non-DF PEs will drop the packet. From the perspective of the network, this is quite wasteful. This is especially true if there are significantly more PEs on the Ethernet Segment. This draft explores this problem and provides a solution for the same.

Authors (
Mrinmoy Ghosh (
Sandy Breeze (
Jim Uttaro (

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