Designated Forwarder (DF)

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Designated Forwarder (DF) – In an EVPN multihomed topology, the device responsible for forwarding broadcast, unknown-unicast, and multicast (BUM) traffic to and from a multihomed host; a backup, non-designated forwarder takes over if it fails. See: Configure EVPN Multihoming for Hosts Using ZT-LAN, Configure EVPN VXLAN for ZT-LAN