Which statement about ASBR-Summary-LSA is false?

The correct choice states that the Advertising Router fields in ASBR-Summary-LSAs of all areas are the same. This statement is false because ASBR-Summary-LSAs are unique to the specific area where they are generated, and their Advertising Router field reflects the router ID of the ABR that is advertising the summary route. Since each area may have different ABRs or different summary routes, the Advertising Router field can vary between areas, making it incorrect to claim that it remains consistent across all areas.

Understanding how ASBR-Summary-LSAs function in the OSPF (Open Shortest Path First) routing protocol is key here. ASBR-Summary-LSAs are used to summarize routes from external Autonomous Systems into an OSPF area. Each ABR generates ASBR-Summary-LSAs, and the information they carry can differ based on the area they are associated with.

In contrast, Link State ID is specific to each ASBR and does indicate the router ID of that ASBR, while the metric indeed reflects the cost of routes that are calculated from an ABR to an ASBR. These components accurately represent their functionalities within the OSPF framework, thus reinforcing why the selected option regarding the uniformity of