Cisco Systems Cisco Systems Cisco Systems ZTE Futurewei Technologies This document specifies proactive, in-band network OAM mechanisms to detect loss of continuity and miss-connection faults that affect unicast and multi-destination paths (used by Broadcast, Unknown Unicast and Multicast traffic) in an Ethernet VPN (EVPN) network. The mechanisms specified in the draft are based on the widely adopted Bidirectional Forwarding Detection (BFD) protocol.