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A common source of customer complaints come from file transfer speeds not matching the throughput rates
guaranteed in the SLA. While many factors affect TCP applications performance, including customer's oper-
ating system hardware performance and settings (TCP window size), carriers need to prove SLA with a test
tool that can show TCP performance independent of Operating System or Server limitations and present
repeatable reliable results. The test set V-PERF feature uses RFC6349 test methodology and metrics for qual-
ifying network TCP or UDP performance. It offers a full line rate stateful TCP test with configurable window
sizes, client and server modes as well as compatibility with iPerf servers.
The V-Perf test suite consists of the full TCP Throughput test Compliant with RFC6349 (Test Set to Test Set
only) and also the original stateful TCP testing to iPerf/iPerf3 server or to our V-Probe.
Stateful TCP Test up to 10GE line rate
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TCP Client/Server and Bi-Directional modes
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Compatible with iPerf Client/Server
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MTU search per RFC4821
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Round Trip Time Measurement
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Configurable TCP Window
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Multi-Window size tests
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Measurements: TCP Throughput rate (min, max, average), Transfer file size and duration, Transfer
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time ratio, TCP Efficiency %, Buffer Delay %
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TCP Throughput Test Diagram
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Ethernet
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