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Distributed protocol for improving the survivability of telecommunications trunk networks

  • US 5,093,824 A
  • Filed: 03/27/1990
  • Issued: 03/03/1992
  • Est. Priority Date: 03/27/1990
  • Status: Expired due to Term
First Claim
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1. A method for reconfiguring a telecommunications network comprising a plurality of reconfigurable cross-connect nodes interconnected by links when a failure event occurs, said method comprising the steps ofstoring at each node a precomputed configuration table corresponding to each of a plurality of possible network topologies which result from a plurality of possible failure events,after a specific failure event occurs, flooding the network with messages by sending from node to node messages of the specific failure event generated by the node detecting the specific failure event so that each of the nodes is informed as to the specific existing topology of the network which results from the specific failure event and such that the network nodes converge to a consistent and correct picture of the existing network topology, andreconfiguring the nodes in accordance with the specific precomputed configuration tables which correspond to the specific existing network topology, wherein reconfiguration of the telecommunication network is accomplished without the use of a separate central network controller.

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