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SECURE DHCP PROCESSING FOR LAYER TWO ACCESS NETWORKS

  • US 20110029645A1
  • Filed: 07/30/2009
  • Published: 02/03/2011
  • Est. Priority Date: 07/30/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a layer two domain identifier of a layer two domain in which a first subscriber device resides;

    storing an association between the layer two domain identifier of the first subscriber device and a layer two address of the first subscriber device;

    comparing a layer two domain identifier and a layer two address of a second subscriber device attempting to acquire a layer three address with the layer two domain identifier and the layer two address of the first subscriber device;

    if the first subscriber device and the second subscriber device share the same layer two address and share the same layer two domain identifier, then denying a layer three address to the second subscriber device based on the comparison; and

    if the first subscriber device and the second subscriber device share the same layer two address but have different layer two domain identifiers, then offering the second subscriber device a layer three address based on the comparison.

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