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FCSS_EFW_AD-7.4 · Question #20

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?

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…

Routing

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

FCSS_EFW_AD-7.4 question #20 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

How the community answered

(27 responses)
  • A
    4% (1)
  • B
    78% (21)
  • C
    7% (2)
  • D
    11% (3)

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.

Topics

#OSPF#hub-and-spoke#point-to-multipoint#neighbor adjacency

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