Apparatus for and method of measuring communication performance
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United States of America Patent
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Jun 29, 2004
Grant Date -
N/A
app pub date -
Jul 27, 1999
filing date -
Jul 28, 1998
priority date (Note) -
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Abstract
A TCP communications performance measuring device 2 obtains an effective bandwidth (a transfer speed) representing performance in TCP communications, wherein performance indexes or both of a round trip time and a maximum segment size which are obtained based on TCP communications variable-length packets transmitted and received pursuant to a TCP (Transmission Control Protocol) defined as protocol of a transport layer of the OSI Reference model, and any one of an average congestion window size, a packet discard rate and a packet discard event rate. The measuring device 2 therefore includes a packet monitoring unit, a performance index detecting unit 22, a session management unit 23, a session management table 24 and a performance calculating unit 25. The measuring device 2 is capable of measuring the performance in the TCP communications on a communications route of a network without specially transmitting the multiplicity of measurement-oriented packets to the network.
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