Which task must the engineer perform as part of the deployment?

After a series of unexpected device failures on the network. a Cisco engineer is deploying NSF on the network devices so that packets continue to be forwarded during switchovers. The network devices reside in the same holding, but they are physically separated into two different data centers.

Which task must the engineer perform as part of the deployment?
A . implement OSPF to maintain the link-state database during failover.
B . implement VRFs ana specify the forwarding instances that must remain active during failover.
C . implement an L2VPN with the failover peer to share state Information between the active and standby devices.
D . implement Cisco Express Forwarding to provide forwarding during failover

Answer: C