Which OSPF router type is responsible for generating link-state advertisements for the entire area?

The designated router (DR) plays a crucial role in OSPF (Open Shortest Path First) networks, particularly within broadcast and non-broadcast multiple access (NBMA) network types. The primary function of the designated router is to minimize the amount of link-state information that needs to be exchanged between routers on a multi-access network. Instead of each router sending its own link-state advertisements (LSAs), the designated router aggregates these LSAs and disseminates them to all other routers in the area. This reduces unnecessary traffic and ensures efficient OSPF operation.

The designated router generates and sends out the LSAs that describe the state of the links within its respective area. By doing this, it ensures that every OSPF router within that area has a consistent view of the network topology. This role is particularly significant in multicast environments, where numerous routers are interconnected, as it simplifies the process of updating routing information.

Internal routers are typically OSPF routers that have all their interfaces within the same area and do not generate LSAs for the entire area. Border routers connect different OSPF areas but do not directly produce LSAs for the entire area like a designated router does. Backbone routers are responsible for functions that involve routing between different areas but