What are the functions of OSPF virtual links

From the perspective of a protocol, the functions of OSPF virtual links are as follows:

Areas not physically connected to the backbone area can be connected to the backbone area through virtual links so that these areas route traffic normally. This function is mainly used to merge networks.
Virtual links improve network reliability by allowing for normal routing after the physical connection to the backbone area is down.
On actual networks, virtual links are seldom used. Generally, networks are planned properly and backbone areas are seldom physically disconnected from the backbone areas. It is rare that networks are merged without network re-planning. In addition, on actual networks, virtual links are seldom used to enhance the robustness of backbone areas.

Scroll to top