TCP window/stream size

Experts,

I am doing some math and I am scratching my head...
IPv4 only provides a 16-bit (unsigned) field for the window, so you can only
increase the window size to 65535 bytes, which allows a maximum of 65535
data bytes to be unacknowledged in transit at any time. With a one-second
round-trip, that's a peak rate of 65 KB/sec, although that is 524,280 bits
per second.
So......
RCV buffer size / RTT = Max TCP throughput
ok, now 64K times 8 bits = 512000
divide that by .04 (latency) and you come up with 12800000 or 12.8Mbs
So by using this logic any one TCP stream can never get over ~13mbs right?

Is my thinking and math correct on this question?
So, is there any way to over come this limitation if the above is correct?

Chris

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Received on Thu Sep 10 2009 - 15:37:54 ART