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Method and apparatus for coordinating access to an output of a routing device in a packet switching network

  • US 5,892,766 A
  • Filed: 02/22/1996
  • Issued: 04/06/1999
  • Est. Priority Date: 02/22/1996
  • Status: Expired due to Term
First Claim
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1. A method for coordinating access to an output of a first routing device in a packet switching network, wherein a data packet granted access to the output is transmitted to a receiving input buffer of a second routing device, the method comprising the steps of:

  • receiving at least one request from a data packet to access the output;

    selecting a request, the request having a priority level;

    receiving an indication of the capacity of the receiving input buffer;

    determining from the capacity of the receiving input buffer a minimum priority level the selected request must have to be granted;

    determining whether the priority level of the selected request is at least as high as the minimum priority level;

    in response to determining that the priority level of the selected request is at least as high as the minimum priority level, granting the selected request; and

    in response to determining that the priority level of the selected request is not as high as the minimum priority level, not granting the selected request.

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