Designated router is responsible for distributing the updated information

OSPF differentiates between different types of routers such as the designated router, the area border router (ABR), or the autonomous system boundary router (ASBR). They each have specific tasks. For example, the designated router is responsible for distributing the updated information within a certain network area (cabling jobs). This allows the amount of link state advertisements to be transmitted to be reduced. In addition to the DR, a backup designated router (BDR) is also chosen. Area border routers take on routing interface functions between a certain area and the backbone area, the autonomous system boundary router (ASBR) between autonomous systems (AS).

OSPF routers are generally assigned to certain areas. A hierarchy can be mapped using the area concept. The routing traffic is reduced by the area concept since the inner topology of an area remains hidden from the other areas. The backbone area connects the individual areas with one another. In addition, there are other special area types such as Stub Areas, Transit Areas, Totally Stubby Areas, Not So Stubby Areas, or Totally Not So Stubby Areas.

In contrast to OSPF, RIP is a distance-vector protocol. It is a very simple routing protocol that is used in smaller networks. RIP saves the destination address, the associated outgoing router interface, and the number of hops to the destination in its routing table.

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eleenaben Joined: February 15th, 2021