Which statement about the OSPF Loop-Free Alternate feature is true?
A.
It is supported on routers that are configured with virtual links.
B.
It is supported in VRF OSPF instances.
C.
It is supported when a traffic engineering tunnel interface is protected.
D.
It is supported when traffic can be redirected to a primary neighbor.
D is the correct answer as per “OSPFv2 Loop-Free Alternate Fast Reroute feature is supported only in global VPN routing and forwarding (VRF) OSPF instances”
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B is correct, it reroute traffic when primary neighbor is down. This feature is supported in global and VRF.
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