FCSS_EFW_AD-7.6 Question #20: Real Exam Question with Answer & Explanation

The correct answer is B. Set network-type point-to-multipoint in the hub interface. In a hub-and-spoke topology using OSPF over IPsec VPNs, the point-to-multipoint network type is necessary to establish neighbor adjacencies between the hub and spokes. This network type ensures that OSPF operates correctly without requiring a designated router (DR) and allows dyn

Question

Refer to the exhibit. An administrator is deploying a hub and spokes network and using OSPF as dynamic protocol. Which configuration is mandatory for neighbor adjacency?

Exhibit

Options

ASet bfd enable in the router configuration
BSet network-type point-to-multipoint in the hub interface
CSet rfc1583-compatible enable in the router configuration
DSet virtual-link enable in the hub interface

Explanation

In a hub-and-spoke topology using OSPF over IPsec VPNs, the point-to-multipoint network type is necessary to establish neighbor adjacencies between the hub and spokes. This network type ensures that OSPF operates correctly without requiring a designated router (DR) and allows dynamic routing updates across the IPsec tunnels.

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