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On Spirent TestCenter (STC) Why the RX frame count is larger than the TX on port counter and Stream result is equal.


If you find out tht the RX frame is more than TX frame on port counters, in most situation this is normal.

Because port counter will record all frames that received including the frames from STC and DUT, which means some protocol packets will be counted as well. On the other hand, our detailed stream result count the frames with Spirent signiture field only, so all framse from other device are not calculated.

As a result you may find Port counters different with Stream counters.

Product : Spirent TestCenter,Spirent TestCenter