Can you detect asymmetric latency?

skew = 400 latency = 100

100 600 1000 700

600 = 100 + skew + latency

skew + latency = 500

700 = 1000 + latency - skew latency - skew = -300

latency + skew = 500 latency - skew = -300 2*latency = 200 latency = 100 skew = 400

assumption: symmetry

skew = 400 latAB = 100 latBA = 50

100 600 1000 650

solve assuming symmetry: lat + skew = 500 lat - skew = -350 2lat = 150 lat = 75 skew = 425

skew = -25

100 175 1000 1075

solve: lat + skew = 75 lat - skew = 75 2lat = 150 lat = 75

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