Network Performance Testing: Measuring Quality of Service

In this video, Tony Fortunato tests a router for SLA conformance using OptiView XG.

Tony Fortunato

July 18, 2017

1 Min Read
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In my previous video, I showed you how I used the Netscout OptiView XG’s throughput test to determine if the Ubiquiti Router X would meet my client’s needs.

In this video, I use another option within the OptiView XG that performs quality testing. This can test whether network performance conforms with your carrier's service-level agreement. It can analyze bandwidth, packet loss or jitter of your carrier's link.

For example, testing might show that you have 5% packet loss or 3 milliseconds of jitter, but does that mean it would have a noticeable impact on your network performance and fall short of the SLA? Whatever tool you use should have a configurable screen that reports a pass or fail.

In this test, I want to see how well the router will perform when I specify a 150 Mb circuit and other specific loss and jitter parameters. The OptiView XG has many more criteria that you can set, but I chose to leave those alone for these tests.

A feature I like in OptiView XG tests the configuration before it runs a full-blown test. This is extremely helpful because the XG reports why it failed, so you can adjust your test parameters and know if they're valid before running extended tests.

About the Author(s)

Tony Fortunato

Sr Network Performance Specialist

Tony Fortunato is a network performance expert who has been designing, implementing and troubleshooting networks since 1989. His company, The Technology Firm, provides clients of all sizes with services ranging from project management, network design, consulting, troubleshooting, designing custom-designed training courses, and assisting with equipment installation. Tony's experience in networking started with financial trading floor networks and ISPs, where he learned to integrate and support equipment from various vendors. Tony has taught and presented at numerous colleges and universities, public forums and private classes. He blogs frequently at NetworkDataPediaand has a popular YouTube channel.

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