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Apparatus for quality of service evaluation and traffic measurement

  • US 6,563,796 B1
  • Filed: 03/15/1999
  • Issued: 05/13/2003
  • Est. Priority Date: 03/18/1998
  • Status: Expired due to Fees
First Claim
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1. A quality of service evaluation apparatus comprising:

  • an arrival detection section for accepting a packet duplicated and branched from packets passing through an attention point in a switching system, and assigning a timestamp of arrival time to a specific processing unit included in said packet;

    an estimating section for estimating arrival times of said processing units included in said packet at said attention point on a basis of said timestamp for said specific processing unit given by said arrival detection section; and

    a simulation section for simulating arrival time of said packet at said attention point actions of said attention point according to a simulation logic in which arrival time to correspond to said estimated arrival time at said attention point obtained by said estimating section was pre-set.

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