Question: We know that the Ethernet frames must have a 8byte preamble, a 12byte inter-frame gap, and a minimum length of 64 bytes which includes Destination
We know that the Ethernet frames must have a 8byte preamble, a 12byte inter-frame gap, and a minimum length of 64 bytes which includes Destination MAC (6 Bytes), Source MAC (6 Bytes), Protocol Type (2Bytes), Payload (46 Bytes) and CRC (4 Bytes). Given all of the above, a gigabit Ethernet switch claims to have wire-speed (e.g, 1Gbps)) throughput. If you run a performance experiment on this switch considering the total overhead would include not only as you calculated in the previous problem 8byte preamble, a 12byte inter-frame, but also would include as well the Destination MAC (6 Bytes), Source MAC (6 Bytes), Protocol Type (2Bytes), and CRC (4 Bytes), what is the expected real throughput would be for the following frame sizes? 2. Note: The number of frames per second can be calculated as: Rate/ Frame size frames per second The maximum theoretical throughput = frames per second x frame size The real theoretical throughput The maximum theoretical throughput f-total overhead in Mbps Frame Size Real expected (bytes) Throughput (Mb 64 128 256 512 1024
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