The parameters for Gigabit Ethernet are a bit different from 10 Mbps and 100 Mbps Ethernet, especially with regard to minimum frame size. The minimum frame size for Gigabit Ethernet is 520 bytes, versus the 72-byte minimum of 10 Mbps and 100 Mbps (Fast) Ethernet. The dead time interval between frames for Gigabit Ethernet is also different from that of 10 Mbps and 100 Mbps (Fast) Ethernet. Gigabit Ethernet uses a dead time interval of 0.096 microseconds and a bit duration of 1 ns:
0.096 microseconds + ((520 bytes X (8 bits/1 byte)} x I ns/bit) = 4.160 mitrtiseainds
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