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Doh! Not MTU. Window size was max 3K and I could never figure out why. Both
ends would advertise 16K or 32K but it stuck there at 3K ? I beter know that
MTU on ethernet is 1500 or I'm in trouble. Just mis-spoke.
Can someone explain to me why the hell my old DSL line from MU had an
MTU of no larger than 3K ?
>The DSL goes into the frame switch downtown. Frames are only limited
>by the MTU. If the MTU is too large, you get really big frames. Imagine
>running a train switching yard. If all your trains had a large number
>of cars, you have to wait till they all go on the track before you
could
>switch in the next train. There is also no reason to have frames larger
>than 1500. Ethernet's MTU is defined as 1500. If you have packets
larger
>than that, they will have to be fragmented when they get to the
ehternet.
>And nothing will stuff packets together to try and fit the MTU. It's
one
>packet at a time, unless it has to be broken.
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