Main Page | See live article | Alphabetical index A computer network with a star network topology, in its simplest form, consists of one central, or hub computer which acts as a router to transmit messages between connected computers by a store-and-forward or switching system. A hierarchical extension of the star topology allows each node connected by a hub to in turn play the role of a hub for a disjoint set of leaf nodes. In this case multiple routes may exist between any two given nodes of the network. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.