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Network device location using multicast

  • US 5,282,270 A
  • Filed: 06/06/1990
  • Issued: 01/25/1994
  • Est. Priority Date: 06/06/1990
  • Status: Expired due to Term
First Claim
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1. In a communication system for transferring data between a plurality of devices, a method for determining the location of a first entity on the communication system, comprising the steps of:

  • a. a second entity transmitting a first signal to a first routing means connected to a first local network of the communication system, wherein the first signal includes an alias, wherein the alias includes a zone name, and the first local network includes the second entity;

    b. the first routing means translating the first signal into a second signal which includes the alias, and transmitting the second signal to at least one second routing means, each at least one second routing means coupled to at least one second local network of the communication system;

    c. each at least one second routing means computing a second zone multicast address from said zone name, translating the second signal into a third signal which includes the alias, and the second zone multicast address, and transmitting the third signal to a first set of nodes, the first set of nodes comprising at least one first node, each node of the first set of nodes having a first zone multicast address, wherein the first zone multicast address is equivalent to the second zone multicast address;

    d. each node of the first set of nodes determining whether the zone name contained within the alias is equal to a zone identifier contained in each node of the first set of nodes, the first set of nodes comprising a second set of nodes, each node of the second set of nodes having the zone identifier equal to the zone name contained within the aliase. each node of the second set of nodes determining whether the alias contained within the third signal is equal to alias information contained within each node of the second set of nodes, the second set of nodes comprising the first entity, the first entity having an alias equal to the alias contained within the third signal; and

    f. the first entity transmitting a fourth signal to the second entity, the fourth signal including the address of the first entity.

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