Apt report on type approval and test of information technology equipment
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- Frame Size (Byte) Burst Size Intended Load (%)
- HOLB Exists BP Exists
- Error Type Test Status Intended Load (%)
- Rx Non Sig Frame Count Oversize Frames Undersize Frames
- Frame Size (Byte) Forward Pressure Intended Load (%)
- Frame Loss (%) Other Frames Flood Count
Figure -Broadcast Frame Latency Summary Results
The objective of this test is to determine how a DUT handles congestion. Does the device implement congestion control and does congestion on one port affect an uncongested port? This procedure determines if “Head of Line Blocking” and/or “Backpressure” are present. Table shows the results of applying the tests on our sample device. The table shows that our sample device does not have “Head of Line Blocking” and does not perform “Backpressure” for congestion control. Table - Congestion Control Test Details
The objective of the faulty frames filtering test is to determine the behavior of the DUT under faulty or abnormal frame conditions. The results of the test indicate if the DUT/SUT filters the errors, or simply propagates the faulty frames along to the destination Table shows the results of applying the test on our sample device. The table shows that none of the faulty frames are sent to the destination and all are dropped. Table - Faulty Frame Filtering Test Results
The Forward Pressure test overloads a DUT/SUT port and measures the output for forward pressure. If the DUT/SUT transmits frames with an inter-frame gap will be less than 96 bits, then forward pressure is detected. Table shows the results of applying the test on our sample device. The results show that even if the inter-frame gap is less than 96 bits frames, the device forwards them in the standard form. Table - Forward Pressure Rate Test Results
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