Which statement regarding the OSPF protocol is FALSE?

The statement that an ABR (Area Border Router) maintains the same Link State Database (LSDB) for all areas is incorrect. An ABR is responsible for connecting multiple OSPF areas and plays a crucial role in redistributing routing information between them. It maintains a separate LSDB for each area it connects. The LSDB for each area is reflective of the topology specific to that area and does not share the same information universally. This separation allows OSPF to scale effectively and reduces the amount of routing information that needs to be propagated through the entire OSPF domain.

The other statements pertaining to the OSPF protocol are accurate. The metric of an AS-external-LSA (Autonomous System External Link State Advertisement) can indeed be specified during the import of external routes, allowing for control over the routing decisions based on the external sources. Additionally, external routing information can carry a tag, used for various purposes, including route filtering and policy routing. Lastly, in an ASBR-Summary-LSA (Autonomous System Boundary Router Summary Link State Advertisement), the Link State ID corresponds to the router ID of the ASBR, serving to identify the source of the summary route within the OSPF network. These points elucidate the