Split-Horizon Filtering

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Split-Horizon Filtering – An EVPN loop-prevention mechanism in which a non-designated-forwarder device tags forwarded BUM packets with a split-horizon label so the designated forwarder for the Ethernet segment drops them instead of relaying them back to the originating host. See: Configure EVPN Multihoming for Hosts Using ZT-LAN, Configure EVPN Multihoming for SD-WAN