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Node processing system

  • US 5,003,533 A
  • Filed: 07/25/1989
  • Issued: 03/26/1991
  • Est. Priority Date: 07/25/1988
  • Status: Expired due to Fees
First Claim
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1. In a ring-type local area network including a plurality of node stations disposed on a ring channel, a method for determining the configuration of said network comprising the steps of producing in a source node, an adjacent station frame capable of being discriminated only by the immediately succeeding station, sending out said adjacent station frame with the source node address and a node count variable set in an information field of said adjacent station frame, detecting and receiving said adjacent station frame in a destination node, producing a different adjacent station frame by additionally setting the destination node address after the source node address in said information field and by modifying the node count variable in said information field of said received adjacent station frame, sending out said different adjacent station frame, and determining an end of sequence by detecting the presence of the source node address as the first node address in the information field of a received adjacent station frame, said method permitting the number, physical addresses and connection sequence of nodes of the entire ring-type local area network to be known from the contents of a received adjacent station frame.

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