OTV is a MAC-in-IP method that extends Layer 2 connectivity across a transport network
infrastructure. Which three options are high-availability features? (Choose three.)

A.
OTV fast convergence

B.
fast failure detection

C.
added the track-adjacency-nexthop command to enable overlay route tracking

D.
added support for unicast cores using an adjacency server

E.
added support for IPv6 unicast forwarding and multicast flooding across the OTV overlay