Method and apparatus for controlling data flow within a switching device

  • US 5,732,080 A
  • Filed: 07/12/1995
  • Issued: 03/24/1998
  • Est. Priority Date: 07/12/1995
  • Status: Expired due to Term
First Claim
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1. A method for forwarding data between ports on a plurality of network interfaces located in a switching device, the method comprising the steps of:

  • receiving data at a first port on a first network interface in said switching device;

    determining a destination tag for said data based on destination information contained with said data;

    using said destination tag as an index to a first table to determine whether any ports on said first network interface other than said first port are associated with said destination tag;

    if one or more ports on said first network interface other than said first port are associated with said destination tag, then forwarding said data to said one or more ports;

    using said destination tag as an index to a second table to determine whether any of said plurality of network interfaces other than said first network interface include ports that are associated with said destination tag;

    if one or more network interfaces other than said first network interface include ports that are associated with said destination tag, then forwarding said data to said one or more network interfaces over a common backplane.

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