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Star Topology
  • A communication network topology in which peripheral nodes are connected to a central node, which rebroadcasts all transmissions, received from any peripheral node, to all peripheral nodes on the network, including the originating node.
  • Note 1: All peripheral nodes may thus communicate with all others by transmitting to, and receiving from, the central node only.
  • Note 2: The failure of a transmission line (channel) linking any peripheral node to the central node will result in the isolation of that peripheral node from all others.
  • Note 3: If the star's central node is passive, the originating node must be able to tolerate the reception of an echo of its own transmission, delayed by the two-way transmission time (i. e. , to and from the central node, plus any delay generated in the central node). An active star (star network having an active central node) may have means to prevent echo-related problems. See also bus topology, local area network, node (def. #1), ring network, star network, tree topology.