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Environment/Versions How is inter-arrival time measured? Answer Interarrival time is the receive time of consecutively received packets. It is affected by frame length and load. (Frame length + minimum IFG + preamble ) * 8 (to convert to bits) / load rate = Inter-arrival time. ((Frame length + 12 + 8 ) * 8 ) / load rate = Inter-arrival time. Example: for 128 byte frames at 100G rate. (128 + 12 + 8 ) * 8 / 100G = 11.84 ns (148*8) / 100g = 11.84ns 1,184 / 100,000,000,000 = 0.00000001184 = 11.84ns