Ethernet network field test unit now supports ITU-T Y.1564

An upgrade to Yokogawa’s AQ1300 series 1G/10G Ethernet multi-field tester is claimed to provide comprehensive test functionality in the smallest and lightest format of any 10GbE test device on the market. The addition of ITU-T Y.1564 functionality compliments the existing RFC2544-compatible network performance tests.

ITU-T Y.1564 mandates that standard tests, like throughput, frame loss, latency and packet jitter, are executed simultaneously, with multiple services running at the same time. This allows the measurement of the influence between services, which can affect the network’s ability to maintain service level agreement (SLA) conformance, as well as reducing the time taken to test an Ethernet service.

There are two kinds of test available to the AQ1300 series testers with ITU-T Y.1564 functionality. One is a configuration test mode for examining the speed and burst size per contracted service, and performance test mode for measuring guaranteed bandwidth of multiple services.   

In configuration test mode the AQ1300 performs either a ramp test, where the device outputs a gradually increasing volume of signals and measures the guaranteed rate and the securing rate. Alternatively, it can perform a burst size test in which the device outputs burst of frame signals at regular intervals and measure the burst bandwidth guaranteed size and the burst bandwidth securing size.

Pass/fail is according to specified thresholds of the information rate (IR), frame loss (FL), frame transfer delay (FTD) and frame delay variation (FDV).

In performance test mode, frames are sent within the committed information rate (CIR) of selected services at the same time to confirm whether all traffic is sent without being discarded. The test can evaluate the traffic quality for the same period for up to eight services.


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