Packet format in hub for packet data communications system

  • US 5,390,173 A
  • Filed: 10/22/1992
  • Issued: 02/14/1995
  • Est. Priority Date: 10/22/1992
  • Status: Expired due to Term
First Claim
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1. A packet data communications network comprising:

  • a first network segment having a plurality of stations, one of said stations sending a message packet onto said first network segment of a first format;

    said first format including a first header and a data field with network destination address in said communications network;

    a first network transfer device having an input connected to said first network segment to receive said message packet and having an output;

    the first network transfer device applying a second header to said message packet, said second header including a switching address translated from said destination address, said second header further including local status information and a plurality of status fields to indicate a message packet servicing;

    a switching device having a plurality of ports, a first of said ports being connected to said output of said first network transfer device;

    the switching device receiving said message packet with said second header and sending said message packet with said second header to a second port as selected by said switching address, and in response to said local status information and the plurality of status fields;

    a second network transfer device having an input connected to said second of said ports of said switching device and having an output connected to a second network segment, the second network transfer device receiving said message packet via said switching device to forward to said second network segment;

    the second network transfer device removing said second header from said message packet.

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