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System for inference of presence of network infrastructure devices

  • US 7,307,962 B2
  • Filed: 03/02/2001
  • Issued: 12/11/2007
  • Est. Priority Date: 03/02/2001
  • Status: Expired due to Term
First Claim
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1. A method for determining a topology of a network comprising:

  • querying a plurality of known remote devices in the network for layer-2 address information, said layer-2 address information comprising layer-2 addresses detected at each port of said plurality of known remote devices;

    querying at least a first of said plurality of known remote devices for a type of connection for at least a first port of the first known remote device;

    inferring an unmapped remote device is physically connected to the first port of the first known remote device based on an identification that the first port has a point to point connection type and that the first port has detected a plurality of layer-2 addresses; and

    inferring a direct connection between a second and a third remote device of said plurality of known remote devices in response to an identification of a single detected layer-2 address of said third known remote device for one port of said second known remote device.

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