Extended star

It extends a physical star topology by one or more repeaters between the central node and the peripheral (or spoke) nodes. These repeaters are used to extend the maximum transmission distance of the physical layer, the point-to-point distance between the central node and the peripheral nodes.

A physical extended star topology in which repeaters are replaced with hubs or switches is a type of hybrid network topology and is referred to as a physical hierarchical star topology or tier-star topology.