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PACKET FORWARDING DEVICE AND FORWARDING METHOD

  • US 20090185561A1
  • Filed: 01/15/2009
  • Published: 07/23/2009
  • Est. Priority Date: 01/17/2008
  • Status: Abandoned Application
First Claim
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1. A packet forwarding device, comprising:

  • a cache, a forwarding unit, and a control unit, whereinsaid cache is configured to store forwarding information;

    said forwarding unit is configured to refer to said forwarding information, to attempt to determine a forwarding destination of a received packet, to send said packet to said control unit regardless of whether or not the forwarding destination of said packet could be determined, and in cases in which the forwarding destination of said packet could not be determined, to request said control unit to determine the forwarding destination of said packet; and

    said control unit is configured to receive said packet from said forwarding unit, and in cases in which said forwarding unit has requested determination of the forwarding destination of said packet, to determine the forwarding destination of said packet, to send said packet to said forwarding destination and store said forwarding destination as forwarding information in said cache, and in other cases, to send said packet to the forwarding destination determined by said forwarding unit.

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