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Dynamic discovery of ISO layer-2 topology

  • US 7,548,540 B2
  • Filed: 07/17/2006
  • Issued: 06/16/2009
  • Est. Priority Date: 10/31/2005
  • Status: Expired due to Fees
First Claim
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1. A method of determining a layer-2 topology of an IT infrastructure comprising layer-2 interconnect devices having ports, the method comprising:

  • obtaining a list of layer-2 interconnect devices and end devices available in the IT infrastructure,determining uplink and non-uplink ports of the layer-2 interconnect devices, wherein the uplink and non-uplink ports are determined by information stored in forward tables of the layer-2 interconnect devices, wherein the uplink ports of the layer-2 interconnect devices are the ports via which a root device is reachable and the non-uplink ports are all other ports,assigning all the, or a subset of the, layer-2 interconnect devices to one initial group, anditeratively refining the initial group by selecting a layer-2 interconnect device of the initial group and assigning all layer-2 interconnect devices reachable via its non-uplink ports to new subgroups.

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