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As the packet goes, the latency from A to R2 is mainly affected by the queing delay of R1. Hence we need to subtract the queing delay at R1 from the difference of maxRTT2 and minRTT2.
Queing Delay at R2 (Qd2) = maxRTT2 - minRTT2 - Qd1
Hence, Queing Delay of nth hop router (Rn) is given below:
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Qdn = maxRTTn - minRTT2 - ? i=1 to n-1(Qdi) |